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I.N.P Soetedjo, P. De Rozari, Novida Leo
Published: 6 October 2021
Jurnal Ilmu Lingkungan, Volume 19, pp 630-637; https://doi.org/10.14710/jil.19.3.630-637

Abstract:
Daerah Aliran Sungai (DAS) Liliba secara adminitrasi terletak di 2 (dua) daerah adminitrasi yaitu Kota Kupang dan Kabupaten Kupang dengan luas 4.534 ha, panjang sungai utama 20.176,22 m. Daya dukung DAS Liliba sebagai sumberdaya alam (tanah, air, dan vegetasi) sangat dipengaruhi kondisi penutupan lahan. Penurunan kuantitas ditandai dengan semakin berkurangnya debit air pada musim kemarau,. Studi dilakukan selama bulan 3 bulan dari bulan September sampai November 2019. Perubahan penutupan lahan dianalisa berdasarkan klasifikasi penggunaan lahan di DAS Liliba tahun 2008-2018. Kuantitas air dianalisa dengan menggunakan metode Mock pada 4 titik pengamatan. Hasil studi menunjukkan penutupan lahan tipe pemukiman meningkat dari 20.39% pada tahun 2008 menjadi 48.47% pada tahun 2018. Penurunan semak belukar sebesar 19.73% pada tahun 2008 menjadi 0% pada tahun 2018. Penurunan kawasan hutan sekunder dari 15.45% pada tahun 2008 menjadi 10.14 % pada tahun 2018. Kondisi mengakibatkan berkurangnya kuantitas air Debit maksimum terjadi pada bulan Januari, yaitu 1.36 m³/dt, sedangkan debit minimum terjadi pada bulan Oktober, yaitu 0.34 m³/dt. ABSTRACTLiliba water shed locate administratively at Kupang city and district of Kupang with about 4,534 ha of wide and about 20,176.22 m of main river length. Carrying capacity of Liliba watershed as natural resources (soil, water, and vegetation) is affected strongly by land cover conditions. Decreasing in water quantity is indicated by decrease in water discharge during dry season. Study had been conducted at Liliba Water Shed during September to November 2019. Change of land cover was analyzed based on classification land use at Liliba Water Shed during 2008-2018 Water quantity was observed by Mock method at 4 locations. Result of the study showed that land cover of settlement type increased from 20.39% in 2008 to 48.47 % in 2018. Shrubs type decreased from 19.73% in 2008 to 0% in 2018. Moreover, secondary forest areas decreased from 15.45% in 2008 to 10.14% in 2018. These conditions resulted in decreasing of water quantity. Maximum water discharge was 1.36 m3/second occurred in January and minimum water discharge occurred in October was 0.34 m3/second. Meanwhile, analyzed water quality indicated a light level of pollution in all parameters measurements.
Editor Editor
Jurnal Kesehatan Lingkungan Indonesia, Volume 20; https://doi.org/10.14710/jkli.20.2.v-vi

Abstract:
Pedoman Penulisan, Cover Belakang
Editor Editor
Jurnal Kesehatan Lingkungan Indonesia, Volume 20; https://doi.org/10.14710/jkli.20.2.i-iv

Abstract:
Cover, Dewan Redaksi, Daftar Isi
Zahid Ullah, Nayyar Hussain Mirjat, Muhammad Baseer
International Journal of Renewable Energy Development, Volume 11, pp 83-94; https://doi.org/10.14710/ijred.2022.39295

Abstract:
. In this study, a robust optimisation method (ROM) is proposed with aim to achieve optimal scheduling of virtual power plants (VPPs) in the day-ahead electricity markets where electricity prices are highly uncertain. Our VPP is a collection of various distributed energy resources (DERs), flexible loads, and energy storage systems that are coordinated and operated as a single entity. In this study, an offer and bid-based energy trading mechanism is proposed where participating members in the VPP setting can sell or buy to/from the day-ahead electricity market to maximise social welfare (SW). SW is defined as the maximisation of end-users benefits and minimisation of energy costs. The optimisation problem is solved as a mixed-integer linear programming model taking the informed decisions at various levels of uncertainty of the market prices. The benefits of the proposed approach are consistency in solution accuracy and traceability due to less computational burden and this would be beneficial for the VPP operators. The robustness of the proposed mathematical model and method is confirmed in a case study approach using a distribution system with 18-buses. Simulation results illustrate that in the highest robustness scenario, profit is reduced marginally, however, the VPP showed robustness towards the day-ahead market (DAM) price uncertainty
Vica Gitya Haryanti, Nany Yuliastuti
Jurnal Pembangunan Wilayah dan Kota, Volume 17, pp 287-294; https://doi.org/10.14710/pwk.v17i3.37022

Abstract:
Coastal innudation which is still happening today in the coastal area of Semarang City has caused the affected area to become socially vulnerable. This study aims to identify the effect of coastal innudation on conditions of social vulnerability in North Semarang District, Semarang City. The method used in this study is a quantitative method using quantitative descriptive analysis techniques and scoring analysis. The analysis was carried out using descriptive analysis of the condition of coastal innudation which caused social vulnerability and scoring analysis which resulted in the level of social vulnerability in the District of North Semarang. The result of this research is that the coastal innudation in North Semarang District affects social vulnerability which is classified into 3 categories, namely high, medium and low social vulnerability. High social vulnerability dominates the social vulnerability value in North Semarang Sub-District because 4 out of 9 urban villages in North Semarang Sub-District have a high vulnerability value due to coastal innudation.
Apriatni Endang Prihatini, Dinalestari Purbawati
Published: 22 September 2021
Jurnal Administrasi Bisnis, Volume 10, pp 155-164; https://doi.org/10.14710/jab.v10i2.36791

Abstract:
Annual report information is needed for investors to determine the rate of return on paid up capital to the company and to predict the level of risk. Based on the consolidated annual report, PT Tiga Pilar Sejahtera Food Tbk (TPSF) did not show good financial performance, so it was unable to pay dividends. This study is descriptive, which is to find out the financial health of TPSF for the period of 2016 to 2019. The method of analysis used the Altman Z-Score which was equipped with a profitability ratio. The data used was secondary data obtained from official company sources, specifically the 2016 to 2019 annual report data. The results show that the company's financial condition from 2016 to 2019 was in the bankruptcy category. This condition is also strengthened by a comparative analysis of profitability ratios that shows its inability to make a profit. The increasing of company’s ability to earn profits began to occur in 2019, however the financial condition was still in the bankruptcy category. It is recommended that companies prioritize strategies that can increase profits from the main businessInformasi laporan tahunan diperlukan bagi para investor, untuk mengetahui tingkat pengembalian dana yang disetorkan kepada perusahaan, serta memprediksi tingkat risiko. Berdasarkan laporan tahun konsolidasi, kondisi keuangan PT Tiga Pilar Sejahtera Food Tbk (TPSF), tidak menunjukan kinerja yang baik, sehingga tidak mampu membayar dividen. Penelitian ini bersifat diskriptif, yaitu dimaksudkan untuk mengetahui kondisi kesehatan TPSF untuk periode tahun 2016 hingga 2019. Metode analisis menggunakan Altman Z-Score dilengkapi dengan rasio profitabilitas. Penelitian ini menggunakan data sekunder yang diperoleh dari data resmi perusahaan, yaitu data laporan tahunan 2016 hingga tahun 2019. Hasil penelitian menunjukan bahwa kondisi keuangan perusahaan periode tahun 2016 sampai dengan 2019 berada pada kategori kebangkrutan. Diperkuat dengan analisis perbandingan rasio profitabilitas, menunjukkan ketidakmampuan memperoleh keuntungan. Peningkatan kemampuan memperoleh keuntungan, mulai terjadi di tahun 2019, walau demikian, kondisi keuangan, masih dalam kategori kebangkrutan Disarankan perusahaan lebih mengutamakan strategi-strategi yang dapat meningkatkan keuntungan yang berasal dari usaha pokok.
, Armandha Redo Pratama, Zuzzy Anna
Published: 21 September 2021
Jurnal Ilmu Lingkungan, Volume 19, pp 620-629; https://doi.org/10.14710/jil.19.3.620-629

Abstract:
Pengembangan ekowisata waduk Cirata memiliki potensi besar dalam penggerak perekomian dan membangun kesejahteraan masyarakat tanpa harus mengorbankan sumber daya alam dan merusak lingkungan bahkan berkelanjutan.Pada studi ini, ini bertujuan untuk menentukan variabel-variabel yang mempengaruhi pengembangan ekowisata di waduk Cirata serta mengetahui hubungan interdepensi antara variabel-variabel sehingga dapat dijadikan penentuan kebijakan dalam pengembangan ekowisata di waduk Cirata yang berkelanjutan. Metode yang digunakan adalah analisis struktural Matrix of Cross Impact Multiplication Applied to a Classification (MICMAC). Hasil penelitian menunjukan bahwa satu variabel penggerak yaitu konflik pemanfaatan waduk sedangkan variabel kunci terdapat 21 variabel dari 5 dimensi pembangunan keberlanjutan. Urutan prioritas variabel kunci pada dimensi lingkungan yaitu kualitas perairan; dimensi ekonomi terdapat tiga variabel yaitu peluang industri wisata, pengembangan ekonomi warga lokal (UMKM) dan alokasi pendanaan pariwisata; dimensi sosial terdapat dua variabel yaitu keterlibatan masyarakat lokal, peluang lapangan kerja bidang pariwisata; dimensi kelembangaan terdapat kesiapan regulasi dalam pengembangan ekowisata, dukungan pemerintah lokal, kesepakatan komunitas dan aturan lokal, koordinasi dan kolaborasi antar lembaga, dan dukungan pemerintah pusat; dimensi kepariwisataan tersapat 10 variabel yaitu aktivitas wisata, tata kelola dan manajemen pengelolaan wisata, keunikan dan keindahan di tempat wisata, sarana dan prasarana pariwisata, daya tarik wisata budaya dan alam, strategi promosi dan pemasaran, akomodasi wisata, aksebilitas wisata, potensi wisatawan lokal, dan potensi wisatawan asing. variabel-variabel tersebut menjadi pondasi awal dalam menentukan kebijakan oleh para pemangku kewenangan dalam pengelolaan ekowisata yang berkelanjutan di waduk cirata. AbstractThe development ecotourism of Cirata reservoir has great potential in driving the economy building community welfare without having to sacrifice natural resources and damage the environment and even be sustainable. This study aims to determine the variables that influence the development of Cirata ecotourism and to determine the interdependence relationship between the variables so that it can be used as a policy for the sustainable development of Cirata ecotourism. The method used was Matrix Cross Impact Multiplication Applied to a Classification (MICMAC) structure analysis. The results showed that one driving variable is the conflict over the use of reservoirs, while the key variables are 21 of the 5 dimensions of sustainable development. A key variable in the environmental dimension, namely water quality; three key variables in the the economic dimension, namely tourism industry opportunities, economic development of local communities (MSMEs) and tourism funding allocations; two variables in the social dimension, namely the involvement of local communities, job opportunities in the tourism sector; the institutional dimension includes regulatory readiness in ecotourism development, local government support, community agreements and local rules, coordination and collaboration between institutions, and central government support; The dimensions of tourism included 10 variables, namely tourism activities, tourism management, uniqueness and beauty in tourist attractions, tourism facilities and infrastructure, cultural and natural tourist attractions, promotion and marketing strategies, tourism accommodation, tourism accessibility, potential local tourists, and potential foreign tourists. These variables become the initial foundation in determining policies and decisions by authorities in sustainable ecotourism management in the Cirata Reservoir
, Ambariyanto Ambariyanto, Munasik Munasik, Denny Nugroho Sugianto, Raden Ario, Ibnu Pratikto, Nur Taufiq-Spj, Syahrial Varrel Canavaro, Tiara Anggita
Published: 11 September 2021
Buletin Oseanografi Marina, Volume 10, pp 307-318; https://doi.org/10.14710/buloma.v10i3.36368

Abstract:
Posisi Pulau Panjang berada di sisi barat garis pantai pesisir kota Jepara, menjadikannya sebagai penghalang (barrier) terhadap gelombang yang akan menghantam pesisir Jepara. Pulau Panjang dikelilingi oleh gugusan terumbu karang. Keterpaparan (exposure) terumbu karang oleh hidrodinamika gelombang yang melewatinya perlu dikaji. Oleh sebab itu, dibutuhkan penelitian mengenai hidrodinamika gelombang pada terumbu karang di perairan Pulau Panjang. Hasil penelitian didapatkan bahwa nilai gelombang yaitu gelombang signifikan (Hs), periode gelombang signifikan (Ts) adalah bervariasi. Nilai gelombang (Hs dan Hs) tinggi, akan mengakibatkan terumbu karang pada sisi barat, timur laut dan tenggara Pulau Panjang lebih menerima keterpaparan (ekposure) oleh hidrodinamika gelombang yang melewatinya. Pada hidrodinamika gelombang lebih rendah, maka terumbu karang yang terlindung dari keterpaparan (ekposure) gelombang adalah yang berada pada sisi timur, barat daya, dan barat laut. Hasil interpolasi (Krigging) didapatkan hasil nilai Hs tertinggi berkisar antara 0,503-1,00. Arah datang gelombang dominan dari timur pulau Panjang, kemudian setelah melewati terumbu karang ada di sisi timur ,timur laut, dan utara Pulau Panjang maka energinya menjadi berkurang, sehingga terumbu karang yang ada di sisi barat, barat daya, dan selatan dari Pulau Panjang posisinya lebih aman dari keterpaparan (ekposure) oleh hidrodinamika gelombang yang melewatinya. Gelombang yang datang akan mengalami perubahan karakteristik (panjang, periode, tinggi gelombang) setelah melewati terumbu karang, sehingga gelombang yang menuju pantai akan semakin berkurang seiring dengan perubahan kedalaman. Tingkat keterpaparan (ekposure) terumbu karang yang ada pada sisi timur,timur laut dan utara di Pulau Panjang oleh gelombang cukup tinggi, hal ini diduga yang menjadi salah satu faktor penyebab kerusakan terumbu karang yang ada diperairan Pulau Panjang. The position of Pulau Panjang is on the west side of the coastal coastline of the city of Jepara, making it a barrier against waves that will hit the coast of Jepara. Panjang Island is surrounded by clusters of coral reefs. The exposure (exposure) of coral reefs by the hydrodynamics of the waves that pass through them needs to be studied. The modeling results are then generated into a shapefile map to be overlaid with a shapefile map of changes in coral reefs by interpolation method with Kriging block. The results showed that the wave value, namely the significant wave (Hs), the period of the significant wave (Ts) varied. High wave values (Hs and Hs) will result in coral reefs on the west, northeast, and southeast sides of Panjang Island receiving more exposure (exposure) by the hydrodynamics of the waves that pass through them. At lower wave hydrodynamics, the coral reefs that are protected from wave exposure are those on the east, southwest, and northwest sides. The results of interpolation (Kriging) obtained the highest Hs values ranging from 0.503 to 1.00. The direction of the dominant wave coming from the east of Panjang Island, then after passing through the coral reefs is on the east, northeast, and north of Panjang Island, the energy is reduced, so that the coral reefs on the west, southwest, and south sides of Panjang Island are safer from exposure (exposure) by the hydrodynamics of waves that pass through it. The incoming waves will experience changes in characteristics (length, period, wave height) after passing through the coral reef so that the waves towards the coast will decrease along with changes in depth. The level of exposure to coral reefs on the east, northeast, and north sides of Panjang Island by waves is quite high, this is thought to be one of the factors causing damage to coral reefs in the waters of Panjang Island.
Saffanah Gumilangsari, , Prayatni Soewondo
Published: 6 September 2021
Jurnal Ilmu Lingkungan, Volume 19, pp 599-611; https://doi.org/10.14710/jil.19.3.599-611

Abstract:
Pengelolaan lumpur tinja masih menjadi tantangan yang besar bagi kota-kota di Indonesia. Untuk mendukung optimasi pengelolaan lumpur tinja, Pemerintah Indonesia bekerjasama dengan lembaga nasional maupun internasional telah mengimplementasikan metode Layanan Lumpur Tinja Terjadwal (LLTT) untuk memastikan tercapainya target sanitasi aman. LLTT merupakan bagian dari Sistem Pengelolaan Air Limbah Domestik (SPALD) yang telah diterapkan di beberapa kota di Indonesia dengan perbagai bentuk model bisnis. Penelitian ini bertujuan untuk mengetahui dan mengevaluasi model bisnis yang mengimplementasikan metode LLTT di bawah operator satuan kerja atau UPTD (Unit Pelaksana Teknis Daerah) dan di bawah operator BUMD (Badan Usaha Milik Daerah) dengan metode observasi, studi literatur, serta wawancara. Untuk bentuk UPTD, penelitian dilakukan di Kota Bekasi dan Makassar sedangkan BUMD dilakukan di Kota Medan dan Surakarta. Hasilnya terdapat perbedaan dalam aspek teknis maupun tata kelola dalam implentasi layanan secara terjadwal. Pelaksanaan LLTT di bawah BUMD air minum memiliki pola penentuan zona layan berdasarkan meter air dan radius pelayanan IPLT untuk aspek teknis sedangkan perbedaan dalam hal tata kelola yaitu BUMD memiliki keunggulan atas tarif yang terintegrasi dengan rekening air minum dan memiliki otoritas lebih dalam alokasi pendapatan yang diperoleh atas tarif tersebut. Operator UPTD menentukan zona layanan berdasarkan batas administrasi kota, selain itu untuk aspek tata kelola UPTD memiliki keterbatasan dalam pengelolaan keuangan karena operasionalnya yang dianggarkan satu tahun sekali dalam APBD dan keterbatasan dalam memperoleh pendapatan lain diluar retribusi yang telah ditetapkan dalam peraturan daerah. ABSTRACTFaecal sludge management (FSM) is still a big challenge for cities in Indonesia. The Government of Indonesia in collaboration with national and international institutions has implemented the scheduled desludging service, in Indonesia we called it Layanan Lumpur Tinja Terjadwal (LLTT), to support the optimization of sludge management due in ensuring the achievement of safely managed sanitation targets. LLTT is part of the domestic wastewater management system which has been implemented in several cities in Indonesia with various forms of business models. This study aims to identify and evaluate the business model that implements the LLTT method that operate under Local’s Work Units (UPTD) and under Regional/Locals’s Owned Enterprises (BUMD) with the method of observation, literature study, and interviews. The research was conducted in the cities of Bekasi and Makassar for UPTD, while the BUMD was conducted in the cities of Medan and Surakarta. The result shows the differences in technical and governance aspects in the implementation of scheduled services. The implementation of LLTT under drinking water BUMD determine the service zone based on water meters and fecal sludge treatment plant’s service radius for technical aspects, while the difference in governance aspect is that BUMD has advantages over tariffs that are integrated with drinking water bills and has more authority in the allocation of income earned on those revenue. UPTD operators determine service zones based on city administrative boundaries, in addition to aspects of governance, UPTD has limitations in financial management due to their operation expenditure which are budgeted once a year in the local revenue budget and limitations in obtaining other income outside the retribution that has been legalized in city/district regulations.
, Fatya Amalia, Widi Senalasari, Vanessa Gaffar
Published: 3 September 2021
Jurnal Administrasi Bisnis, Volume 10, pp 133-142; https://doi.org/10.14710/jab.v10i2.35768

Abstract:
This study aims to measure and validate the variable constructs of marketing activity in Instagram social media. The results of this study will be very meaningful for the study and implementation of measurement of marketing activity in Instagram social media because currently Instagram is a social media that has a large customer base and has activity business therein. This study uses a questionnaire as a means of collecting data that is sent online. The population in this study were social media users who had done online transactions on Instagram social media as many as 352 respondents’ data were collected which were then performed statistical calculations. Confirmatory Factor analysis (CFA) and Exploratory Factor Analysis (EFA) were conducted to measure marketing activities on Instagram social media. The results recommend that the variable marketing activity on Instagram social media can be measured through 6 dimensions consisting of 20 indicator items. These dimensions are visual communication, relationship interaction, delivery of information, recommendations, personalization, and modern elements. All these dimensions and indicators are in construct and consistency declared valid for measuring Instagram social media marketing activities.Penelitian ini bertujuan untuk mengukur dan memvalidasi konstruk variabel aktivitas pemasaran dalam media sosial instagram. Hasil penelitian ini akan sangat berarti untuk kajian dan implementasi pengukuran aktivitas pemasaran dalam media sosial instagram karena saat ini instagram merupakan media sosial yang memiliki basis pelanggan yang banyak dan terdapat aktivitas bisnis di dalamnya. Penelitian ini menggunakan kuesioner sebagai alat pengumpul data yang dikirimkan secara online. Populasi pada penelitian ini adalah pengguna media sosial yang pernah melakukan transaksi online di media sosial Instagram sebanyak 352 data responden berhasil terkumpul yang kemudian dilakukan penghitungan statistik. Confirmatory Factor Analysis (CFA) dan Exploratory Factor Analysis (EFA) dilakukan untuk mengukur aktivitas pemasaran dalam media sosial instagram. Hasil penelitian merekomendasikan bahwa variable aktivitas pemasaran pada media sosial instagram dapat diukur melalui 6 dimensi yang terdiri dari 20 item indikator. Dimensi tersebut adalah komunikasi visual, interaksi relasi, penyampaian informasi, rekomendasi, personalisasi, dan unsur modern. Kesemua dimensi dan indikator tersebut secara konstruk dan konsistensi dinyatakan valid untuk mengukur aktivitas pemasaran media sosial instagram.
Debi Sumarlin, Evi Gusmayanti, Gusti Zakaria Anshari
Published: 3 September 2021
Jurnal Ilmu Lingkungan, Volume 19, pp 576-581; https://doi.org/10.14710/jil.19.3.576-581

Abstract:
Sumberdaya hutan dan lahan merupakan sumberdaya yang menjadi andalan dalam aktivitas sosial ekonomi masyarakat terutama di negara berkembang. Sumber daya hutan dan lahan memiliki permasalahan seperti kegiatan konversi area hutan ke penggunaan lahan non hutan. Tujuan penelitian ini untuk mengidentifikasi perubahan penggunaan lahan di Kecamatan Sandai pada periode 2000 sampai 2019. Selanjutnya hasil analisis digunakan untuk mengestimasi cadangan karbon. Data perubahan penggunaan lahan diperoleh dari analisis visual citra landsat, sedangkan cadangan karbon dihitung berdasarkan total luas penggunaaan lahan dengan standar cadangan karbon di setiap penggunaan lahan. Hasil analisis citra pada tahun 2019 dicocokkan dengan kondisi di lapangan. Hasil pengecekan pada 30 titik dengan kondisi terakhir penggunaan lahan tahun 2019 diperoleh kecocokan sebanyak 26 titik (87%), Ketidakcocokan terjadi karena perubahan penggunan lahan hutan sekunder menjadi kebun (1 titik), semak belukar menjadi tambang (1 titik), pertanian lahan kering menjadi lahan terbuka (1 titik) dan penggunaan lahan transmigrasi berubah menjadi semak belukar (1 titik). Penggunaan lahan yang paling dominan mengalami perubahan adalah hutan lahan kering sekunder dan perkebunan. Hutan lahan kering sekunder tahun 2000 yaitu seluas 39.931,11 ha, pada tahun 2011 menjadi 32.833,22 ha dan tahun 2019 menjadi 17.180,02 ha. Hutan lahan kering sekunder mengalami penurunan luas 22.751,09 ha dari luas 39.931,11 ha pada tahun 2000. Penggunaan lahan perkebunan tahun 2000 adalah 2.303,01 ha, mengalami penambahan luas tahun 2011 menjadi 3.996,79 dan tahun 2019 menjadi 13.937,42 ha. Penggunaan lahan perkebunan mengalami penambahan luas sebesar 13.937,42 ha dari luas 2.003,01 ha pada tahun 2000. Cadangan karbon tahun 2000 adalah 5.873,585 ton/ha, tahun 2011 menjadi 5.391,709 ton/ha dan tahun 2019 4.605,672 ton/ha. Cadangan karbon mengalami penurunan dari tahun 2000 sampai 2019 sebesar 1.267,91 ton/ha. AbstractForest and land resources are the leading sector in the socio-economic activities of the community, especially in developing countries. Forest and land resources have problems such as the conversion of forest areas to non-forest land uses. The purpose of this study is to identify land use changes in Sandai District in the period 2000 to 2019. An analysis for above ground carbon stock also carried out in this study. Land use change data was obtained from visual analysis of Landsat imagery, while carbon stock was calculated based on the total land use area with carbon stock standards in each land use. Ground checking was carried out to validate the image in 2019 with field conditions. The results of ground checking at 30 points with the latest conditions of land use in 2019 obtained 26 points (87%), mismatches occurred due to changes in secondary forest land use to plantations (1 point), shrubs to mining (1 point), dryland agriculture to bareland (1 point) and transmigration changed to shrubs (1 point). The most dominant land use changes are secondary dryland forest and plantations. The secondary dryland forest in 2000 was 39.931,11 ha, it became 32,833.22 ha in 2011, and 17.180,02 ha in 2019. Secondary dryland forest decreased by 22.751,09 ha in 2019 from 39.931,11 ha in 2000. Plantations in 2000 was 2.303,01 ha increase to 3.996,79 in 2011 and 13,937.42 ha in 2019. Plantations increased by 13.937,42 ha in 2019 from 2.003,01 ha in 2000. Carbon stocks in 2000 were 5.873.585 tons/ha, it became 5,391,709 tons/ha in 2011 and 4,605.672 tons/ha in 2019. Carbon stocks decreased from 2000 to 2019 by 1.267,91 tons/ha.
Rakian Adib Sufi, Lieli Suharti
Published: 1 September 2021
Jurnal Administrasi Bisnis, Volume 10, pp 107-120; https://doi.org/10.14710/jab.v10i2.39311

Abstract:
Digitalization brings many benefits to businesses including culinary SMEs. The benefits include ease of reaching customers digitally, cost efficiency, and being able to expand marketing networks to other regions and even countries. Despite the advantages of digitalization, the majority of MSMEs in Indonesia still have a low level of digitalization readiness. Therefore, this study aims to examine several factors that may affect digitalization readiness, namely intrinsic motivation (X1) and ICT knowledge (X2) as well as demographic moderating (Z) on the digitalization readiness of SMEs. This research is a quantitative research with the number of respondents as many as 90 MSME owners who are determined using accidental sampling technique. The data analysis technique of this research uses Partial Least Square (PLS) with SmartPLS 3.0 software. The results showed that intrinsic motivation and ICT knowledge had a significant positive effect on the digitalization readiness of culinary SMEs in Salatiga City. However, the role of age, education level and gender has not been proven as a moderator of the influence of intrinsic motivation, ICT knowledge of MSME owners on MSME digitalization readiness.Digitalisasi membawa banyak manfaat untuk bisnis termasuk UMKM kuliner. Manfaat tersebut antara lain kemudahan menjangkau pelanggan secara digital, efisiensi biaya, dan dapat memperluas jaringan marketing ke daerah bahkan negara lain. Terlepas dari kelebihan digitalisasi, mayoritas UMKM di Indonesia masih memiliki tingkat kesiapan digitalisasi yang rendah. Maka dari itu, penelitian ini bertujuan untuk meneliti pengaruh faktor motivasi intrinsik (X1) dan pengetahuan TIK (X2) terhadap kesiapan digitalisasi UMKM. Persoalan penelitian lain yang juga diteliti adalah peran variabel demografi yang mencakup usia, tingkat pendidikan, dan gender sebagai pemoderasi dalam penelitian ini. Penelitian ini merupakan penelitian kuantitatif dengan jumlah responden sebanyak 90 orang pemilik UMKM yang ditentukan menggunakan teknik accidental sampling. Teknik analisis data penelitian ini menggunakan Partial Least Square (PLS) dengan software SmartPLS 3.0. Hasil penelitian menunjukkan bahwa motivasi intrinsik dan pengetahuan TIK berpengaruh positif secara signifikan terhadap kesiapan digitalisasi UMKM kuliner di Kota Salatiga. Namun, dugaan adanya peran faktor usia, tingkat pendidikan, dan gender tidak terbukti sebagai pemoderasi terhadap pengaruh motivasi intrinsik, pengetahuan TIK pemilik UMKM terhadap kesiapan digitalisasi UMKM.
Moafaq K.S. Al-Ghezi, Bashar K. Mahmoud, Tamadher M.A Alnasser, Miqdam Tariq Chaichan
International Journal of Renewable Energy Development, Volume 11, pp 71-81; https://doi.org/10.14710/ijred.2022.38493

Abstract:
. In this study, data of the monthly average of daily global solar radiation falling on a horizontal surface, relative humidity, maximum temperature, and duration of sunshine for the city of Baghdad were collected through two sources. First, from the Iraqi Meteorological Authority (IMA) for a period extending from 1961 to 2016. The second is from NASA, for the period from 1984 to 2004. Then, four linear regression models, two single and two polynomials were formulated to calculate the values of the monthly average of daily global horizontal solar radiation (GHSR) incidents. The models calculated the monthly average of daily extraterrestrial radiation and day length, using some data provided by NASA and the IMA. To ensure the validity of the used models, a statistical test was performed for the performance of the proposed models, using the indicators mean bias Error (MBE), root mean square error (RMSE) as well as mean percentage error (MPE). The validation shows the relationship between the measured and computed values (through the analysis of the results), where a great convergence was found between the measured and calculated values. This means that the proposed models can be adapted to predict global solar radiation. The highest values of measured solar radiation were during the month of June, which were 28.555 and 27.280 MJ/m2/day from the IMA and NASA, respectively. The same applies to the radiation calculated using the four empirical models. The month of June was the highest in terms of solar radiation values. The radiation values were 28.947, 26.315, 29.699, and 26.716 MJ/m2/day for the first, second, third, and fourth models, respectively. The lowest values of measured and calculated radiation were during the month of December. Always, radiation measured by the IMA was greater than those of NASA, as well as the values of radiation calculated in the two IMA-based models were greater than the other two NSA-based models. In the absence of a method for measuring the diffuse and direct (beam) solar radiations, as well as the lack of such values by meteorological authorities, and its paramount importance, they were reported to mathematically calculate them in this study. The values of statistical indicators RMSE; MJ/m2/day, MBE; MJ/m2/day and MPE% were (0.4769, 0.0164, 0.2207), (0.8641, 0.1773, -0.9680), (0.6420, 0.3996, -1.1487), (0.9604, 0.218, -1.0225) for the first, second, third and fourth models, respectively. According to the results of the statistical test, it can be indicated that the single linear regression model, based on the IMA’s data (model No.1), is the most accurate to calculate global solar radiation for Baghdad City.
Dwi Sutiningsih, Inova Inova, Mateus Sakundarno Adi
Jurnal Epidemiologi Kesehatan Komunitas, Volume 6, pp 317-322; https://doi.org/10.14710/jekk.v6i2.12040

Abstract:
Background: Tempoyak is a traditional food of Dayak tribe that is processed from durian fruit meat. Some studies show that at a certain amount of tempoyak consumption can increase blood pressure. Nutritional content in durian fruit that can affect blood pressure, namely, potassium, calcium, sodium, and alcohol. The purpose of this study is to prove that consuming tempoyak is a risk factor for hypertension.Methods: This research is an observational research with cross sectional design that is done in Dayak tribal communities in the area of Tumbang Samba health center. The study population in this study is the population in the area of Puskesmas Tumbang Samba Katingan Regency. The sample number was 180 respondents who met the inclusion and exclusion criteria.Result: The results showed that the proven factors for the incidence of hypertension are coffee consumption (PR=5,280; p-value=0.022), tempoyak consumption frequency (PR=3,935; p=value=0.047).Conclusion : Tempoyak consumption is proven to be a risk factor for the incidence of hypertension.
Agung Wiwiek Indrayani, I Gusti Ayu Sitti Sadvika, I Gede Wikania Wira Wiguna, Ni Putu Sri Indrani Remitha, I Gede Krisna Arim Sadeva, Anak Agung Bagus Putra Indrakusuma, Putri Ayu Wulandari, Ni Wayan Sucindra Dewi
Jurnal Epidemiologi Kesehatan Komunitas, Volume 6, pp 237-246; https://doi.org/10.14710/jekk.v6i2.9140

Abstract:
Background: Lung cancer is one of the non-communicable diseases that have an increasing number of events that each year with a mortality rate of 18.4% and an incidence of 11.6%, occupies the top position based on GLOBOCAN data in 2018. One of management in the NSCLC is currently in the form of surgery and adjuvant therapy such as chemotherapy, radiotherapy and target therapy. However, there were weaknesses and limitations in care for its patients therefore development of curative therapy for NSCLC’s patients were needed. The aim of this review is to learn and investigate about the potential of siRNA that is transfected into McD and folate receptors alpha-conjugated gold nanoparticle encapsulation as a therapeutic opportunity that could be developed as a treatment in management of NSCLC.Method: The writing method used in this review article was the study method of literature. The used data comes from 45 of relevant literature sources and was arranged systematically in accordance with the topic of the problem discussed, along with the inclusion and exclusion criteria.Result: This treatment could increase gene transfection, siRNA biodistribution in organs, reduced KRAS, Bcl-2, and VEGF expression. Moreover, siRNA had entered phase III clinical trials and FOLR1 antibodies were in phase II of clinical trials.Conclusion: Utilization of siRNA specifically was designed for three genes such for KRAS, VEGF and Bcl-2 which were three genes that played a role in the pathogenesis of NSCLC, could be the right modality choice for treatment of NSCLC.
I Nengah Raka Swastika, Ni Ketut Ristiani, Adrian Wiryanata Gorintha, Agung Wiwiek Indrayani
Jurnal Epidemiologi Kesehatan Komunitas, Volume 6, pp 247-253; https://doi.org/10.14710/jekk.v6i2.12190

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Background: Coronary heart diseases (CHD) is a disorder that caused by blockage of coronary arteries due to the process of atherosclerosis which disrupts the blood supply to the heart muscle. According to Sample Registration System (SRS) Indonesia in 2014, CHD is a second highest cause of death after stroke that is 12,9% of all cause of death in Indonesia. Therefore, this study aims to examining the effect of soybean extract encapsulated with Self Microemulsifying Drug Delivery System (SMEDDS) on LDL levels in coronary heart model rats. Based on various study, isoflavone aglycone genistein is the main flavonoid in soybean seed that has potential as an antioxidant. To increase bioavailability of aglycone isoflavones, a SMEDDS is needed. In this regard, the purpose of this reseach is to examine the potential of soybean seed (Glycine soja) extract to reduced cholesterol in CHD.Methods: The method used is a literature review with literature sources in the form of relevant articles from the search engines, namely Google Scholar, Pubmed, ScienceDirect, and Research Gate. Inclusion criteria included journals containing the keywords “soybean (Glycine soja)”, “Coronary Heart Disease”, “SMEDDS”, and “genistein isoflavone aglycone”.Result: Isoflavone aglycone as an potential antioxidant that is able to bind free radicals and and also lowering LDL, Triglycerides, and glucose levels in hyperglycemic states and increasing HDL.Conclusion : Soybean seed extract with SMEDDS encapsulation have a potential to decrease LDL level in coronary heart disease.
Dinda Sinta Rahayu, Ari Udiyono, Lintang Dian Saraswati
Jurnal Epidemiologi Kesehatan Komunitas, Volume 6, pp 261-268; https://doi.org/10.14710/jekk.v6i2.9930

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Background: Systemic Lupus Erythematosus (SLE) is an autoimmune disease with varied manifestations and characterized by recurring flares. Lack of disease knowledge and non-compliance with drug therapy are an important cause of not achieving treatment targets and worsening lupus symptoms.Methods: This research is a descriptive study with a cross-sectional approach. The research method is quantitative. The sample in this study were 136 patients who came to examine themselves at Central-General Hospital in Semarang City. The sampling technique used in this study was total sampling. This study used a questionnaire to determine the variables studied.Result: The results of this study indicate a significant correlation between the level of knowledge (r=-0,332; p < 0,05) and level of drug adherence (r=-0,644; p < 0,05) to the level of systemic lupus erythematosus flaresConclusion : Based on the results, there is a correlation between knowledge and drug adherence to the level of systemic lupus erythematosus flares. The recommendation given is an integrated approach between patients and health care providers to improve patients understanding of systemic lupus erythematosus flares. Beside of that, specific attention should be paid to integrate the service provision system into the collaborative approach of the patients and his/her family in order to promote the level of drug adherence.
Jurnal Epidemiologi Kesehatan Komunitas, Volume 6, pp 286-292; https://doi.org/10.14710/jekk.v6i2.10871

Abstract:
Background: As a developing country, Indonesia maintains a low level of welfare for hygiene, as exemplified by Indonesia’s poor access facilities to clean water and lack of proper sanitation for households. Meanwhile, a proper supply of water and sanitation will help in reducing morbidity and mortality rates of diarrhea in children. Other risk factors such as socio-economic and socio-demographic conditions, helps improving the quality of life of households, thus lowering the risk of various diseases, including diarrhea.Methods: This study uses a Logistic Regression Analysis (Logit) model with Cross-sectional design using data collected from the 5th wave of the Indonesian Family Life Survey (IFLS-5) in 2014. The study population was children aged 2-10 years with a total of 2446 observations.Result: The result shows that there was a relationship between father's education in elementary school level (p=0.013), father's education in junior high school level (p=0.015), father's education in high school level (p=0.001), father's education at the university level (p=0.012), income (p=0.051), children’s age (p=0.000), and children’s gender (p=0.033) with the rate of diarrhea in children.Conclusion: This research concludes that water consumption factors (sources of drinking water, drinking water boiling process before consumption) and sanitation facilities factors (household toilet types) have insignificant results on the diarrhea rate of children in urban areas of Indonesia. However, socio-economic factors (fathers' education and household income) and socio-demographic factors (children’s gender and children’s age) have a significant effect on the diarrhea rates of children in urban areas of Indonesia.
Dwi Sutiningsih
Jurnal Epidemiologi Kesehatan Komunitas, Volume 6, pp 300-306; https://doi.org/10.14710/jekk.v6i2.11886

Abstract:
Background: The city of Semarang was ranked first in the highest confirmed case of COVID-19 in Central Java. Various control efforts have been made to stop the spread of this disease through government regulations and behavioral interventions in the community that depend on the compliance of the community itself. This study aims to analyze the level of health literacy, level of knowledge, attitudes and prevention practices related to COVID-19 in the general public of Semarang City.Methods: This study uses an observational analytic method with a cross-sectional approach which is carried out on the people of Semarang City. Data was collected through a google form questionnaire which was distributed online through social media from October 12 to November 9, 2020 and managed to collect 407 respondents from 16 sub-districts in Semarang City. The questionnaire consists of 42 questions covering the level of knowledge, attitudes and practices of prevention against COVID-19. Data were analyzed by univariate and bivariate with Chi-square statistical analysis.Result: The knowledge of internet users in Semarang City regarding COVID-19 was mostly good (50.1%), the attitudes and practices of preventing COVID-19 were also mostly good (56.5% and 50.6%). There was a significant relationship between the level of knowledge about COVID-19 and COVID-19 prevention practices (p-value=0,001). There was a relationship between attitudes related to COVID-19 and COVID-19 prevention practices (p-value=0.001).Conclusion : There is a relationship between the level of knowledge and attitudes towards COVID-19 prevention practices in the internet user community in Semarang City. Improved health education is needed to improve literacy and prevention practices for COVID-19.
Anriani Puspita Karunia Ning Widhi, Imam Nafi Yana Saputra
Jurnal Kesehatan Lingkungan Indonesia, Volume 20, pp 137-142; https://doi.org/10.14710/jkli.20.2.137-142

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Latar belakang: Pemenuhan kebutuhan pangan asal ternak yang berasal dari unggas memiliki angka konsumsi yang cukup tinggi salah satunya yaitu ayam broiler. Untuk memenuhi tingginya permintaan terhadap ayam broiler pada pakandiberifeed additiveserta antibiotic growth promotor (AGP) dalam bentuk antibiotik untuk mempercepat pertumbuhan dan daya tahan tubuh. Pemanfaatan antibiotik yang tidak bijak akan menimbulkan residu antibiotik serta resistensi Escherichia coli penghasil Extended Spectrum β-lactamase (ESBL).Metode: Penelitian ini termasuk penelitian deskriptif. Data primer diperoleh dari hasil screeningtest. Data ditunjukkan dalam tabel dangambar yang dibahas secara deskriptif. Variabel yang diamati residu antibiotik tetrasiklin serta E. coli penghasil ESBL pada daging ayam broiler.Hasil: Temuan terhadap residu antibiotik tetrasiklin pada daging ayam broiler yaitu sebesar 7,14% dengan rerata zona hambat 12,13 mm, sedangkan hasil identifikasi E. coli penghasil ESBL pada daging ayam broiler diperoleh hasil sebesar 71,4%.Simpulan:Residu antibiotik tetrasiklin dalam daging ayam broiler masih tergolong aman dapat dikonsumsi namun, temuanE. coli penghasil ESBL pada daging ayam broiler menimbulkan masalah kesehatan, baik bagi kesehatan hewan maupun manusia, serta dapat menimbulkan resistensi terhadap antibiotik. ABSTRACT Title: Broiler Chicken Meat Sold at Purwokerto's Market Has Antibiotic Residues and Escherichia Coli That Produces EsblBackground: Poultry, of which broiler chickens are one example, is a food source with a relatively high consumption rate.Feed additives and antibiotic growth promoters (AGP) in the form of antibiotics in the ration are given to increase broilers’ growth and endurance to meet the high demand for them. It is important to note that unwise antibiotic use results in the buildup of antibiotic residues and resistance to the Extended Spectrum Beta-lactamase(ESBL)produced by Escherichia coli bacterium.Method: To collect primary data for this descriptive study, the screening test results were employed as a starting point. Next, the information was presented in the form of tables and figures.Result: According to this study, broiler chickens had a tetracycline residue of 7.14 percent, with an inhibitory zone mean of 12.13 mm, and 71.4 percent of ESBL-producing E. coli.Conclusion:According to the study, broiler chicken meat with tetracycline residue is still safe to consume. E. coli, which is known to develop an antibiotic-resistant strain of E. coli ESBL) can cause serious health problems in both humans and animals.
Mirza Permana, Santun Risma Pandopatan Sitorus, Darmawan Darmawan
Published: 31 August 2021
TATALOKA, Volume 23, pp 307-319; https://doi.org/10.14710/tataloka.23.3.307-319

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Peri Urban Area is a unique region with spatial dynamics that continues to experience changes that have an important role to play in the urban life in the future. There are 8 sub-districts in Malang Regency which are directly adjacent to Malang City and have a significant influence on the development of the city. Objectives of this research are to determine the dynamics of land use change from 2008 - 2018 and to predict land use in 2030. The method used is the analysis of land use changes from landsat TM 8 images in 2008 and 2013 to predict land use in 2018 which then tested the validity to get a level of accuracy. The results showed the development of built-up area has increased by 12% while agricultural land has experienced a declining trend. Significant changes occurred in Singosari, Pakisaji and Karangploso sub-district. Validation of land use between the predictions of 2018 and actual land use in 2018 showed that the value of kappa was quite high, at 87%. The trend of land use in peri-urban areas until the year 2030 is predicted to have built up area of 26,456 ha, which means an increase 17,686 ha (33.6%) from the existing year 2018. The potential incompatibility of the RTRW with the predicted land use in 2030 is 11,950 ha or 22.7%.
Fikriya Rusyda, Sudarto Ronoatmodjo
Jurnal Epidemiologi Kesehatan Komunitas, Volume 6, pp 333-340; https://doi.org/10.14710/jekk.v6i2.11815

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Background: Diarrhea is the main cause of malnutrition in underfive children. One of the efforts to prevent diarrhea in infants is exclusive breastfeeding. Exclusive breastfeeding is infant that receives only breast milk without any additional consumption from 0 to 6 months. Under six months infant who are not exclusively breastfed have a higher risk of developing diarrhea than those who are exclusively breastfed.Methods: This study aims to determine the relationship between exclusive breastfeeding and the incidence of diarrhea in under six months infants in Indonesia. This study analyze secondary data from the 2017 Indonesian Demographic and Health Survey. The sample in this study consist of all live infants aged 0-6 months born to women aged 15-49 years in Indonesia who were successfully interviewed and had a complete answer (no answer missing). After weighting, 1898 samples were obtained.Result: The result found that the proportion of diarrhea incidence in Indonesia is 9.1%. Meanwhile of all infants, 36% were not exclusively breastfed. The results showed that there was a significant relationship between infants who were not exclusively breastfed and diarrhea incidence in Indonesia after adjusted by mother's education level, maternal employment status, mother’s economic level, area of residence, and latrine ownership (PR = 2.12, 95% CI = 1.46-3.07).Conclusion : Infants who were not exclusively breastfed increase the risk for diarrhea. Therefore it is necessary to have a program to increase the coverage of exclusive breastfeeding. The program can take the form of counseling by health workers in health services.
Maryanto Maryanto, Mangapul Parlindungan Tambunan, Isranto Handoyo Putra
Jurnal Epidemiologi Kesehatan Komunitas, Volume 6, pp 269-279; https://doi.org/10.14710/jekk.v6i2.10891

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Background: First case in Indonesia was reported in March 2, 2020 and until November, it has infected more than 400.000 people, with more than 300.000 recovered and 15.000 deaths in total. Especially in Cangkringan District and surrounding area, the latest natural disaster is happening in the midst of a COVID-19 pandemic that is eruption of Mount Merapi which encourage local government and outposts to prepare camps for people nearby who suffered from Mount Merapi eruption. Meanwhile, in evacuation camp, the chance of infected by COVID-19 is high and it is a main problem and a purpose of this research.Methods: Methods that is conducted in this research by obtaining vulnerability level data against the outbreak and making a probability map of virus transmission mainly in the eruption red zone.Result: The outcome of this research is COVID-19 mitigation map within eruption red zone of this regency and recommendations about how to control the outbreak among refugees.Conclusion: Therefore, evacuation can be conducted in the midst of pandemic situation because the transmission case is low.
Juwita Lesly Senduk, Jusup Suprijanto, Ali Ridlo
Buletin Oseanografi Marina, Volume 10, pp 251-258; https://doi.org/10.14710/buloma.v10i3.37930

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Mikroplastik merupakan partikel plastik yang berukuran ≤5 mm. Ukurannya yang kecil menyebabkannya dapat tertransportasikan ke seluruh tempat dan biota termasuk ikan. Ikan pelagis jenis ikan kembung dan ikan selar merupakan salah satu biota laut bernilai ekonomis tinggi dan banyak dikonsumsi masyarakat. Penelitian ini bertujuan untuk mengetahui kandungan mikroplastik pada ikan kembung dan ikan selar. Metode penelitian yang digunakan adalah deskriptif kualitatif. Sampel ikan kembung diambil di TPI Tambak Lorok Semarang, sedangkan ikan selar diambil dari TPI Tawang Rowosari Kendal. Penelitian ini dilakukan pada bulan Juni–Desember 2020. Tahapan penelitian yang dilakukan yaitu dimulai dengan pengambilan sampel, pengukuran sampel, pembedahan sampel, pelarutan sampel, pemisahan partikel mikroplastik, penyaringan partikel, dan identifikasi langsung secara visual menggunakan mikroskop. Hasil penelitian menunjukkan bahwa terdapat mikroplastik pada ikan selar dan kembung di TPI Semarang dan Kendal. Mikroplastik paling banyak dengan rerata 25,2 partikel pada insang dan 19,1 partikel pada pencernaan ditemukan pada ikan kembung di TPI Tambak Lorok, pada ikan selar (Selaroides leptolepis) ditemukan rerata 10,1 partikel pada insang dan 8,4 partikel pada pencernaan. Hasil yang didapatkan ditemukan bentuk fiber, fragmen, pelet, dan film, dengan warna yang beragam yaitu hitam, coklat, biru, putih, merah, transparan, dan kuning. Microplastics are plastic particles with a size of 5 mm. Its small size causes it easy to be transported to all places, including fish. Pelagic fish species of mackerel and selar fish are one of the marine biota that are economically feasible and widely consumed by the public. This study aims to determine the content of microplastics in mackerel and selar fish. The research method used is descriptive qualitative. Mackerel fish samples were taken at TPI Tambak Lorok Semarang, while selar fish were taken from TPI Tawang Rowosari Kendal. This research was conducted in June – December 2020. The stages of the research carried out were starting with sampling, measuring samples, separating samples, separating microplastic particles, evaluating particles, and directly using a microscope. The results showed that there were microplastics in selar and mackerel in TPI Semarang and Kendal. The most microplastics with an average of 25.2 particles in the gills and 19.1 particles in the digestion were found in mackerel at TPI Tambak Lorok, in selar fish (Selaroides leptolepis) an average of 10.1 particles were found in the gills and 8.4 particles in digestion. The results obtained were found in the form of fibers, fragments, pellets, and films, with various colors, namely black, brown, blue, white, red, transparent, and yellow.
Muhammad Mikail Athif Zhafir Asyura, Ilma Ranjani Wijaya, Theetouch Toshukowong, Rui Sheng Wang
Journal of Public Health for Tropical and Coastal Region, Volume 4, pp 35-43; https://doi.org/10.14710/jphtcr.v4i2.10794

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Introduction: Leprosy is a skin disease that reaches 200,000 cases annually. Considered a neglected tropical disease, 80% of annual leprosy remained in countries such as Brazil, India, and Indonesia. Multi-drug treatment is effective in curing leprosy but ineffective in preventing further transmission. The implementation of large-scale single dose rifampicin-post exposure prophylaxis suggests the inhibition of leprosy transmission and thus needs validation.Methods: This systematic review was carried out based on the PRISMA statement from multiple databases using set keywords. A total of 646 studies were identified, followed by 4 randomized controlled trials included after screening.Results: 86,502 subjects were divided into control and interventional groups and were to be followed up in 2-6 years. Most studies showed a significant decrease of leprosy cases by 50-60%. Furthermore, a complementary effect between single-dose rifampicin-post exposure prophylaxis and Bacillus Calmette–Guérin vaccine was identified. Moreover, the cost-effectiveness of the intervention was analyzed which resulted in IDR 80,414,775 being averted in its 25th year of implementationConclusion: The review established promising results of implementing single dose rifampicin-post exposure prophylaxis to prevent leprosy transmission. Further national scale intervention with a multi-layered approach is suggested to ensure full support and continuity of the large-scale intervention
Sarinah Basri K, Basri K, Eko Maulana Syaputra, Sri Handayani
Journal of Public Health for Tropical and Coastal Region, Volume 4, pp 63-77; https://doi.org/10.14710/jphtcr.v4i2.10809

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Introduction: Microplastics have become a pollution problem that has received worldwide attention. Microplastics in the water impact the environment and health, especially in Indonesia, which is the second-largest plastic waste contributor in the world. This literature study aims to determine the distribution of microplastics pollution in waters and its impact on health and the environment in Indonesia.Methods: The literature search on papers from 2010-2021 through Google Scholar, Pubmed, ScienceDirect, and ProQuest, with the keywords of ‘Microplastics’, ‘Indonesia’, ‘aquatic’, ‘environment’ found 477 articles. Then, after the exclusion of duplicate articles, and other inclusion criteria, the final review was done on 42 articles. PRISMA guidelines were used for reviewing the procedure.Results: Most microplastic research was conducted in Java Island, which is dominated by rivers and beaches. Based on the source, microplastics came from domestic waste, tourism, and fishing activities. The most common forms found were black and blue fibers from fishing lines, nets, and clothing fibers of various sizes. The type of polymer identified is polyethylene plastic. Microplastics impacted tourist destinations, marine ecosystems through the food chain, and also humans who consume seafood.Conclusion: Microplastics are found in the Indonesian marine environment. Humans can consume seafood contaminated with microplastics, which will have an impact on health. Therefore, a health risk assessment should be done to provide information for taking environmental management efforts.
Shavira Nur Fadhilla, Arum Siwiendrayanti
Journal of Public Health for Tropical and Coastal Region, Volume 4, pp 53-62; https://doi.org/10.14710/jphtcr.v4i2.10791

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Introduction: Ketanggungan District is one of the endemic filariasis areas in Brebes Regency since 2016 with a Microfilaria Rate >1%. Filariasis is an infectious disease that attacks the lymph nodes caused by filarial worms and is transmitted by mosquitoes. Environmental factors can affect the transmission of filariasis, which will provide a resting place and breeding place for mosquitoes. Therefore, this research aimed to describe the existence of filariasis vectors and environmental factors that can be seen spatially.Methods: The research was a descriptive observational/ exploratory study using the Geographical Information System (GIS) approach. Data collection was carried out by entomological surveys, subject points sampling, and research objects using GPS. Data were analyzed spatially by Geographic Information Systems (GIS).Results: Culex quinquefasciatus was the type of mosquito which had the highest distribution in the Karangmalang District. The mosquitos were found at sewers, puddles, shrubs, and cattle pens. The vectors can be found within a distance of 29 m to 2 km from filariasis cases.Conclusion: Culex quinquefasciatus may be the vector of filariasis in the Ketanggungan District, with the most environmental factors found in Dukuhturi Village.
Yuliana
Journal of Public Health for Tropical and Coastal Region, Volume 4, pp 44-52; https://doi.org/10.14710/jphtcr.v4i2.10778

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Introduction: COVID-19 pandemic has negative or positive psychosocial impacts on society. Fear, uncertainty, insomnia, depression, anxiety, and suicide are the negative psychosocial impacts. These psychosocial impacts may cause psychiatric problems. This paper aims to describe the risk of psychiatric problems for people with negative psychosocial impacts in comparison to positive attitudes during the COVID-19 pandemic.Methods: This systematic literature review used these keywords: ‘fear’, ‘uncertainty’, ‘COVID-19’, ‘psychiatric problem’ , and ‘society’. The search engines used were PubMed and Science Direct. There were 302 papers from PubMed and 134 papers from Science Direct at the beginning. To ascertain the quality of the selection, the process was done twice. Narrative reviews were excluded. Finally, 19 manuscripts were selected for review. PRISMA guidelines were used in the reviewing procedures.Results: From 18 cross-sectional studies and one randomized control trial, it was found that females and the elderly are prone to anxiety and depression. Other risk factors are low income, signs of infection, previous contact history with COVID-19 patients, too much information about COVID-19, and pseudoscientific beliefs. Positive protective factors are good self-talk skills, coping strategy mechanisms, compliance with the rules, and a high level of mental resilience.Conclusion: Anxiety and depression prevention related to Covid-19 can be done through strengthening the positive protective factor and minimize the risk factors. COVID-19 pandemic should be seen as an opportunity to strengthen positive mental attitudes.
Siti Farihah Rosanna, Khabib Fadlilatul Ma'Ruf, Yogi Aditya, Globila Nurika, Edza Aria Wikurendra
Journal of Public Health for Tropical and Coastal Region, Volume 4, pp 78-88; https://doi.org/10.14710/jphtcr.v4i2.10617

Abstract:
Introduction: Open Defecation Free (ODF) is a condition in the community that has carried out total sanitation and does no more Open Defecation (OD). Dukuh Village was chosen as the research location because it was a village with the highest OD in Ngadiluwih, Kediri. This high rate of OD is caused by a lack of public awareness about the importance of sanitation. This research was conducted to analyze the village readiness to accelerate ODF status in Dukuh Village.Methods: This study was done in a qualitative method with a single holistic case study design using Stimulus-Organism-Response theory. The key informants of this study were five persons:1) the Head of Dukuh Village, 2) the environmental health officer of Wonorejo Community Health Center, 3) Dukuh Village community leader and 4) the community representatives who still defecated, and 5) no more defecated in an open area after triggering activities. They were selected purposively. Data were collected through in-depth interviews, Focus Group Discussion, and documents review. Data analysis was done through the Spradley model, scoring and categorizing village readiness using the scales of Aydin and Tasci.Results: Five main problems were the lack of funds for the ODF program, poor socialization, low Clean and Healthy Behavior, lack of roles from community leaders, and limited land for latrine construction. Based on the analysis of village readiness in achieving the ODF program using the Aydin & Tasci scale, the obtained score was 2.1. This score indicated that Dukuh Village was not ready yet and a lot of system improvements[h1] were needed.Conclusion: Dukuh Village was not ready yet for the ODF program and need a lot of system improvements. It was recommended to make village policies, create working groups, and maximizing socialization.
Maun Jamaludin
Jurnal Administrasi Bisnis, Volume 10, pp 143-154; https://doi.org/10.14710/jab.v10i2.36302

Abstract:
The objectives of this research are: (1) To simplify business processes so that supply chain management starts from raw materials to finished materials and distributes these products to end consumers effectively and efficiently; (2) Build a web-based supply chain management application system to make it easier for companies in their business processes. This research method uses qualitative methods. The final results of this study: (a) Application of supply chain management information system designed for PT. ABCD can reduce supply chain uncertainty in companies. Because the implementation of the system can help the company in controlling the procurement of raw materials that must always be available in accordance with the company's needs; (b) The supply chain management information system application that is designed can describe the correlation between suppliers and companies, companies and users who can facilitate ordering goods from suppliers to companies and vice versa, so that the delivery of ordered goods is in accordance with the order and arrives at the company on time and in the right amount; (c). Provide opportunities for suppliers to participate in the implementation of the system to provide online price quotes.Tujuan Penelitian ini adalah untuk: (1) Mempermudah dalam proses bisnis sehingga dalam pengelolaan rantai pasok mulai dari bahan mentah sampai bahan jadi dan mendistribusikan produk tersebut kepada konsumen akhir dapat berjalan secara efektif dan efisien; (2) Membangun suatu sistem aplikasi manajemen rantai pasok yang berbasis website sehingga lebih memudahkan perusahaan dalam proses bisnisnya. Metode penelitian ini menggunakan metode kualitatif. Hasil akhir penelitian ini antara lain (a) Penerapan sistem informasi manajemen rantai pasok yang dirancang untuk PT. ABCD bisa mengurangi ketidakpastian rantai pasok pada perusahaan. Sebab, penerapan sistem tersebut bisa membantu perusahaan dalam pengadaan dan mengendalikan bahan baku yang mesti selalu tersedia sesuai dengan keinginan perusahaan; (b) Aplikasi sistem informasi manajemen rantai pasok yang dirancang tersebut dapat menggambarkan korelasi pemasok dengan perusahaan, perusahaan dengan pemakai yang bisa mempermudah pemesanan barang dari pemasok ke perusahaan maupun sebaliknya sehingga pengiriman barang yang dipesan sesuai dengan pesanan dan sampai ke perusahaan tepat waktu dan tepat jumlah; (c) Memberi peluang kepada pemasok agar ikut serta ke dalam penerapan sistem tersebut untuk memberikan penawaran harga secara online
Ahmad Syauqi, Siti Fatimah, Durrotul Choiroh
International Journal of Renewable Energy Development, Volume 11, pp 63-69; https://doi.org/10.14710/ijred.2022.37768

Abstract:
The environments have created an abundance of residual plants from all life sectors, which is not optimal for bioethanol. Therefore, this research developed microbial technology that yielded sugar and fermentation testing. The research aimed to discover the delignification process and compare the consuming sugar by Saccharomyces cerevisiae between the chemical saccharification and accelerated bio-agent of fungal consortium in the engineered media. The innovation of the bioethanol process was conducted using raw materials from biomass. Based on this study, some preliminary hypotheses were made: (i) arranging fungal substrate which consists of residual sugar, molasses, and enriched residual papaya fruits could provide distinguishable growth of cell mass; (ii) the substrate concentration of 2.5% and 7.5% in the growth medium using enriched residual papaya fruits, respectively, as a medium, could be distinguished using delignification. A benchmark was used to compare the chemical and bio-agent saccharification. The consortium that grew and produced cell mass by times factor in molasses has fulfilled the element needed compared to the natural organic substances from the papaya fruit. The higher concentration of delignification material substrate yielded higher growth-saccharification and the average of 10.45 ± 0.21 % Brix was obtained by the fungal consortium in the broth medium, although the acceleration growth is insignificant. Nonetheless, Saccharomyces cerevisiae had successfully fermented saccharification yield sugar from the delignification of plants residual
Sri Wahyuni, Christina Dewi Prasetyowati, Wahyu Nur Pratiwi, Khalid Alfiadi
Nurse Media Journal of Nursing, Volume 11, pp 268-278; https://doi.org/10.14710/nmjn.v11i2.29360

Abstract:
Background: The diabetes mellitus cases have significantly increased in Indonesia over recent years. Health education for patients has often been carried out; however, education using self-instructional methods, which provided self-learning to solve problems by adjusting the patient's ability to improve self-care behaviors, has not been widely used.Purpose: This study aimed to analyze the self-care behaviors of diabetic patients with the application of self-instructional training.Methods: This research was a quasi-experimental study with a non-equivalent pretest-posttest with a control group design. The participants were 73 diabetic patients in the out-patient units selected by a purposive sampling technique, and divided into two groups: the intervention group (n=37) and the control group (n=36). The intervention group received a self-instructional training program which was carried out in two sessions using a booklet; each session lasted for 45 minutes. The Summary of Diabetes Self-Care Activities (SDSCA) questionnaire was used to collect diabetic patients' self-care behavior data. Wilcoxon and Mann-Whitney tests were employed for data analysis.Results: Self-care behaviors of patients with diabetes mellitus increased before and after the training in both groups (p=0.000). However, the increase in the intervention group was higher than that in the control group, from 46.46±5.014 to 58.03±7.320 and from 47.78±4.929 to 51.64±6.406, respectively. There was also a significant difference in the self-care behaviors of diabetic patients between the intervention group and the control group (p=0.000).Conclusion: Self-instructional training significantly improves self-care behaviors of diabetic patients. Therefore, self-instructional training can be considered to apply in the clinical setting for improving self-care behaviors of diabetic patients to prevent complications, and for enhancing nursing care of diabetes mellitus.
Editorial Front Matter
Nurse Media Journal of Nursing, Volume 11; https://doi.org/10.14710/nmjn.v11i2.41316

Editorial Back Matter
Nurse Media Journal of Nursing, Volume 11, pp 1-16; https://doi.org/10.14710/nmjn.v11i2.41317

Jurnal Administrasi Bisnis, Volume 10, pp 121-132; https://doi.org/10.14710/jab.v10i2.29327

Abstract:
The activities of reading news, chatting, viewing YouTube and Facebook or even status updates, Instagram, buying and selling online, to playing online games that are not related to work by using internet facilities are cyberloafing behaviors that are often carried out by employees. The limitations of previous research examining the impact of cyberloafing on work behavior empirically are still very limited. In addition, previous research that explains the occurrence of cyberloafing behavior also shows results that have not been established. Encouraged by these findings, this study aimed to examine the factors that explain cyberloafing behavior and its impact on employees' organizational behavior. To meet these objectives, an empirical model was developed with job characteristics and self-control variables as exogenous variables, job stress and cyberloafing as mediating variables and laziness as endogenous variables. Testing the influence between these variables was carried out with an analytical approach to Structural Equation Modeling (SEM) which used empirical data obtained through questionnaires as an interview guide to employee respondents in various fields of work. The results of data analysis showed that job characteristics, self control, and job stress were statistically proven to have an effect on cyberloafing behavior. Cyberloafing testing on negative organizational behavior, namely laziness also shows a real influence. In addition, the results of this study also show that there are differences in prevalence caused by cyberloafing behavior between male and female employees.
Finnah Fourqoniah, Riyan Danu Setiawan, Muhammad Fikry Aransyah
Jurnal Administrasi Bisnis, Volume 10, pp 99-106; https://doi.org/10.14710/jab.v10i2.36974

Abstract:
In doing business, business actors must understand the importance of a business model in entrepreneurship; a business strategy is needed. There are several business models, but the one most often used by business actors is the Business Model Canvas or what we usually know (BMC). According to several studies, the Business Model Canvas is a business model that can still be developed into a more detailed business model and better mapping. Then from the Business Model Canvas, a new business model was developed, namely the Business Road Map, to win the market competition. Business Road Map is a pattern or Business Mapping Method to build a business model/business plan capable of creating growth over time.
Peter Carey, Christopher Reinhart
Journal of Maritime Studies and National Integration, Volume 5, pp 14-29; https://doi.org/10.14710/jmsni.v5i1.9343

Abstract:
In Indonesian history, Britain has never been considered a prominent player in the politics of the archipelago. From an Indonesian perspective, the British presence only lasted a brief five years (1811–1816) during short-lived interregnum regime led by Thomas Stamford Raffles (1781-1826). This began with the British seizure of Java from the Franco-Dutch administration of Marshal Daendels (1808-11) and his successor, General Janssens (May-September 1811), and ended with the formal return of the colony to the Netherlands on 19 August 1816. However, as this article demonstrates, Britain has had a long-lasting and decisive influence on modern Indonesian history, dating from the time when the archipelago entered the vortex of global conflict between Britain and Republican France in the 1790s. The presence of the British navy in Indonesian waters throughout the century and a half which followed Britain’s involvement in the War of the First Coalition (1792-97) dictated inter alia the foundation of new cities like Bandung which grew up along Daendels’ celebrated postweg (military postroad), the development of modern Javanese cartography, and even the fate of the exiled Java War leader, Prince Diponegoro. in distant Sulawesi (1830-55). This British naval presence had pluses and minuses for the Dutch. On the one hand, it was a guarantor of Dutch security from foreign seaborne invasion. On the other, it opened the possibility for British interference in the domestic politics of Holland’s vast Asian colony. As witnessed in the 20th-century, the existence of the Dutch as colonial masters in the Indonesian Archipelago was critically dependent on the naval defence screen provided by the British. When the British lost their major battleships (Prince of Wales and Repulse) to Japanese attack off the east coast of Malaya on 10 December 1941 and Singapore fell on 15 February 1942, the fate of the Dutch East Indies was sealed. Today, the vital role played by the Royal Navy in guaranteeing the archipelago’s security up to February 1942 has been replaced by that of the Honolulu-based US Seventh Fleet but the paradoxes of such protection have continued.
Achmad Basuki, Ali Awaludin, Bambang Suhendro, Suprapto Siswosukarto
MEDIA KOMUNIKASI TEKNIK SIPIL, Volume 27, pp 9-17; https://doi.org/10.14710/mkts.v27i1.31916

Abstract:
Laminated Veneer Lumber (LVL) Sengon is classified as one of the engineering products having a significant increase of both physical and mechanical properties compared with Sengon solid wood. Considering its short planting years and sustainable production, Sengon wood is very potential to be used as construction materials of low-rise houses to support the housing needs in Indonesia. Creep behaviour of LVL Sengon material is one of the mechanical properties that needs to be considered. This article evaluated value of creep factor of the open web truss joist (OWTJ) LVL Sengon test and compared this experimental creep factor with the numerical results developed by FE model taking into account the viscoelastic parameters of authors' previous study. The viscoelastic parameters were based on a 217-day creep test of compression and tension parallel to the grain of LVL Sengon at 20 % of stress level that were further modeled using Prony series creep model having n equals to 3. The reduction in the modulus of elasticity over time resulted in creep deflection and creep factor values at 217 days of testing results and FE numerical analysis of the OWTJ LVL Sengon ranging from 1.50–1.54; while the predicted creep factor at 25 years of service life is 1.57 or greater than the creep factor value provided in SNI 7973: 2013 of 1.5.
Roni Adi Wijaya, , Septi Wijayanti
MEDIA KOMUNIKASI TEKNIK SIPIL, Volume 27, pp 127-134; https://doi.org/10.14710/mkts.v27i1.31558

Abstract:
A series of tests were carried out to determine the effect of the addition of coal combustion fly ash as an additional mineral (additive) on improving the quality and compressive strength of cement according to the Indonesian National Standard (SNI 15-2049-2004). Research methods include sample preparation, manufacture of cement with 0%, 5%, 8%, 12%, and 15% fly ash variations, chemical and physical properties of cement. The parameters measured were the level of chemical composition (%) using X-Ray Fluorescence Spectroscopy (XRF) ARL 9800 OASIS, free lime content (%) by volumetry, insoluble residue level (%) by gravimetry, compressive strength (kg/cm2), and smoothness cement (cm2/g). The results showed that the addition of fly ash increased the SiO2 content of cement, thereby increasing C3S and C2S compounds which are compressive strength components of a cement. Besides, the addition of fly ash is directly proportional to IR levels, compressive strength, smoothness, and inversely proportional to free lime levels. So the addition of fly ash can improve the quality of cement by increasing chemical components, increasing compressive strength, and reducing cracking or expansion of cement.
Radianta Triatmadja, Warniyati Warniyati
MEDIA KOMUNIKASI TEKNIK SIPIL, Volume 27, pp 29-40; https://doi.org/10.14710/mkts.v27i1.33861

Abstract:
Many coastal structures or structures in coastal areas were destroyed by a tsunami attack. Such destructions were due primarily to the fact that such structures were not designed to withstand a tsunami. Those which were designed to withstand tsunami force may also have been destroyed due to some damaging factors which were not included in the design. The damage of the coastal structures is one of the important factors that have caused casualties. Especially, when the destroyed structures were originally aimed to mitigate the area against tsunami, they may cause higher fatalities. Examples of such structures are sea walls in many parts of Japan which were destroyed by the 2011 tsunami. This paper discusses the important factors relevant to the damage of seawall as tsunami mitigation structure such as impact force due to tsunami front, hydrostatic force, and hydrodynamic force, debris force and scour due tsunami. The study was carried out based on literature about the damages of seawall as tsunami protection structures and laboratory experiment reports. The destructions to the structures were divided into three classifications namely instantaneous direct destruction due to impact and drag forces, slowly direct destruction due to drag force, and slowly indirect destruction due to scour. Finally, important aspects to be considered in the design of seawall as tsunamis protection were proposed.
, I Gede Adi Susila, Ni Wayan Sastraningsih
MEDIA KOMUNIKASI TEKNIK SIPIL, Volume 27, pp 41-50; https://doi.org/10.14710/mkts.v27i1.29390

Abstract:
This research evaluated the effect of connection’s rigidity zone factors of RCS frame’s connections on the seismic behavior of regular RCS frames of a five-story office building located at seismic design category (SDC) of D. The variations on rigidity zone factors were 0, 0.25, 0.50, 0.75, and 1.0, respectively for Model MS, MSR025, MSR05 MSR075, and MR with the same elements’ dimension. A 3-D finite element modeling was conducted to do a linear elastic analysis for structural design and nonlinear static pushover analysis for evaluating the structural seismic performance. The results show that all models have met the strength and serviceability design limits. The seismic performances in terms of base shear, elastic stiffness, and ductility of all RCS models increased with an increase in the values of the rigidity zone factor. The structural performance level according to FEMA 440 was life safety (LS) for the Model MSR05, MSR075, and MR, while for the Model MS and MSR025 was collapse prevention (CP). The seismic energy dissipation for all RCS frames was an intermediate category indicated by the numbers of developed plastic hinges less than 20% of the total potential plastic hinges
Hakas Prayuda
MEDIA KOMUNIKASI TEKNIK SIPIL, Volume 27, pp 97-106; https://doi.org/10.14710/mkts.v27i1.26069

Abstract:
Prestressed concrete has been widely used in structural buildings, especially for big span length purposes. The prestressed concrete dimension cross sections normally are fixed, provided by the factory based on their experience for every span length. However, this size aspect can be developed to make better improvement. In this study, I and box girder shapes were modified with the same total cross-sectional area. Three types of modification have been made for each girder shape by giving the space on the middle for I girder and changing form from trapezoidal to rectangular section for box girder. The number of steel tendons for this research was made typically and same so that the stress and displacement can be compared fairly. Manual calculation was performed for all samples and was completed under three circumstances namely initial condition, loading condition, and final condition. Also, the manual calculation is according to Indonesian provisions, which are SNI 2833-2016 for the earthquake load and SNI 1725-2016 for normal loading on bridges. From the result, it is known that one shape for each girder shape has met the criteria for the smallest stress and displacement.
Indri Rahmandhani Fitriana, Djoko Legono, Heriantono Waluyadi
MEDIA KOMUNIKASI TEKNIK SIPIL, Volume 27, pp 80-87; https://doi.org/10.14710/mkts.v27i1.35978

Abstract:
The Kedungombo and the Sermo Reservoirs have problems in fulfilling basic services because of sedimentation. Sedimentation that occurs in each of the reservoirs would form a specific reservoir sedimentation pattern that is supposed to be similar because the hydrology and physiography conditions of the reservoir's catchment area are similar. This study aims to determine the dynamics of sedimentation patterns that occur in the dead storage for reviewing the characteristics/sedimentation regime of the two reservoirs. The analysis was carried out by processing bathymetrical data which were processed into a digital terrain model (DTM) using ArcGIS. Furthermore, the storage volume, sedimentation volume, storage percentage, and specific reservoir sedimentation rate are calculated. The results showed that the two reservoirs showed an increase in sedimentation volume each year so that the reservoir characteristic curve shifted from the plan graph. The dead storage capacity of Kedungombo Reservoir is 100% in 1989 to 43% in 2016 and 100% of Sermo Reservoir in 1997 to 58% in 2011. The specific reservoir sedimentation rate, i.e. 0.0031 and 0.0042 million m3/year/km2 for the Kedungombo Reservoir (between 1989 and 2016) and the Sermo Reservoir (between 1997 and 2011) respectively, indicating that the two reservoirs are in the same regime
Wira Rante Paganggi, Amelia Makmur, Rachmansyah Rachmansyah
MEDIA KOMUNIKASI TEKNIK SIPIL, Volume 27, pp 135-142; https://doi.org/10.14710/mkts.v27i1.31536

Abstract:
The infrastructure growth has an impact on reducing green areas, which will be followed by reduced water catchment areas. Porous concrete is one of the porous materials that can be used on a pedestrian walk, which is able to drain water. The porous concrete has a limitation strength. This research aims to determine the effect of using various content of chemical additive and polypropylene fibers for porous concrete mixtures related to the compressive strength and permeability values. This experimental method referring to ACI 522R-10 Standard. That specimens using chemical additives and variations of polypropylene fibers: 0.05%, 0.1%, 0.15%, 0.2%, and 0.25% by weight of cement. The results showed that the specimen which had the highest compressive strength was 16.9 MPa, which was added 0.25% polypropylene fiber. The addition of polypropylene fibers increases the compressive strength value by 5.6%. Based on the compressive strength and permeability graphs, it can be estimated that the optimal content of polypropylene fiber is 0.17% by weight of cement.
Kukuh Cahya Adi Putra, Yulita Arni Priastiwi, Sukamta Sukamta
MEDIA KOMUNIKASI TEKNIK SIPIL, Volume 27, pp 88-96; https://doi.org/10.14710/mkts.v27i1.30591

Abstract:
SNI 2847-2019 defines a deep beam as a structural component that is loaded on one side and supported on the opposite face, allowing compressive components such as struts to form between the loads and supports. It is also stated that the ratio of the net span of the beam to the height of the beam must match the standards (l/h) 4. The goal of this investigation is to determine the value of the stress’s correlation and the trajectory angle to the ratio of the l/beam h's with a span of 4 meters when subjected to a point load of P = 2,000 kN. In the analysis procedure, SAP v.14 is being used to determine the value of stresses and trajectory angles of variations l/h. The results obtained from this study is ratio of l / h of deep beam affects the magnitude of the stress and the angle of the trajectory. Increasingly the width of the beam has no significant effect on the resulting trajectory angle.
Evelyn Jogiadinata, Paulus Pramono Rahardjo, Aswin Lim
MEDIA KOMUNIKASI TEKNIK SIPIL, Volume 27, pp 107-117; https://doi.org/10.14710/mkts.v27i1.27923

Abstract:
Piled-raft foundation is a combination of pile foundation and raft foundation. Bearing capacity of piled-raft foundation yielded from contribution of both pile capacity and raft capacity. Most of the time, design of pile foundation is assumed that all load is solely carried by pile and the capacity of raft is ignored. In this study, three-dimensional finite element analysis was applied to analyze the load percentage that can be carried by raft. A case study, which is located in Central Jakarta, Indonesia, was modeled to investigate this issue. This project was instrumented with two pressure cells where the data were used to verified the model and the load distribution. The analysis results showed good agreement with the measurement data, where the load carried by the raft is around 33-42%.
MEDIA KOMUNIKASI TEKNIK SIPIL, Volume 27, pp 1-8; https://doi.org/10.14710/mkts.v27i1.29218

Abstract:
This paper presents a ground response analysis to simulate the liquefaction phenomenon during the 2011 Tarlay Earthquake in northern Thailand. The site investigation data and geophysical measurements on 7 sites in northern Thailand were collected. The multi-springs element model was implemented in finite element ground response analysis. Several parameters, such as peak ground acceleration, peak ground velocity, amplification factor, excess pore pressure ratio, were observed. Furthermore, the correlation from the ground motion parameters was generated to estimate liquefaction potential, which was represented by excess pore pressure ratio. The result showed that the excess pore pressure ratio was relatively well correlated with several ground parameters, such as amplification factor, velocity-acceleration ratio, and factor of safety against liquefaction. The results could be also used for the engineering practice in predicting liquefaction potential in Northern Thailand.
, Bambang Trigunarsyah
MEDIA KOMUNIKASI TEKNIK SIPIL, Volume 27, pp 18-28; https://doi.org/10.14710/mkts.v27i1.33764

Abstract:
Sustainable construction is a way for the construction industry to achieve sustainable development by considering social, economic, environmental, and cultural issues. Policies for implementing sustainable construction in infrastructure delivery are still not clearly understood, resulting in challenging implementation by planners and contractors. This research study identifies the barriers to implementing sustainable construction in developing infrastructure projects in Bina Marga, Cipta Karya, Sumber Daya Air, and Perumahan Permukiman sectors in North Sulawesi Province. Data collection using semi-structured interviews involved 23 informants from these four sectors. The results of the study found that the barriers evenly occur throughout the life cycle of an infrastructure project in four sectors, namely: (1) the programming phase related to strategic planning documents and identification of barriers, (2) the technical planning phase related to technical understanding and competence service providers, (3) construction implementation phase related to expert consultants, service provider competence, and green construction technology, (4) utilization phase related to socialization, promotion, and education, (5) demolition phase related to mechanisms and availability of resources. The study results provide academic-based information for the government to minimize barriers to implementing sustainable construction policies throughout Indonesia.
Anisa Nur Azizah, Dian C.R. Novitasari, Putroue Keumala Intan, Fajar Setiawan, Ghaluh Indah Permata Sari
ILMU KELAUTAN: Indonesian Journal of Marine Sciences, Volume 26, pp 207-214; https://doi.org/10.14710/ik.ijms.26.3.207-214

Abstract:
Salinity is the level of salt dissolved in water. The salinity level of seawater can affect the hydrological balance and climate change. The salinity level of seawater in each area varies depending on the influencing factors, that is evaporation and precipitation (rainfall). One way to find out the salinity level is by taking seawater samples, which requires a long time and costs a lot. In this study, the salinity level of seawater can be predicted by utilizing time series data patterns from evaporation and precipitation using artificial neural network learning, namely the backpropagation neural network. The evaporation and precipitation data used were derived from the ECMWF dataset, while the salinity data were derived from NOAA where each data was taken at the coordinate point of 9,625 113,625 in the south of Java island. Seawater salinity, evaporation, and precipitation data were formed into a 7-day time series data. This study conducted several backpropagation architectural experiments, that is the learning rate, hidden layer, and the number of nodes in the hidden layer to obtain the best results. The results of the seawater salinity prediction were obtained at a MAPE value of 2.063% with a model architecture using 14 input layers, 2 hidden layers with 10 nodes and 2 nodes, 1 output layer, and a learning rate of 0.7. Predicted sea water salinity data ranging from 33 to 35 ppt. Therefore, the prediction system for seawater salinity using the backpropagation method can be said to be good in providing information about the salinity level of sea water on the island of Java.
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