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Erlangga Erlangga
JurusanTeknik Kimia PSD III Fakultas Teknik Universitas Diponegoro Semarang Jl. Prof Sudarto SH, Pedalangan Tembalang, Semarang 50239
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Characteristics Nesting Ground of Turtle (Lepidochelys olivaceae) in Gampong Gelumpang Sulu Timur Dewantara Sub-district, North Aceh Regency Muliani, Muliani; Erlangga, Erlangga; Mutia, Mutia; Ayuzar, Eva; Mahdaliana, Mahdaliana
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 8, No 2: Jurnal Pembelajaran Dan Biologi Nukleus Juli 2022
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v8i2.2547

Abstract

One of the reptiles whose natural habitat is in the sea and has the ability to migrate very far is the turtle. Threats that endanger the turtle population, both directly and indirectly, come from natural sources and from human activities. The factors that influence turtle nesting ground were predators, sand grain size, substrate humidity, substrate temperature, beach width, coastal vegetation and beach slope. Humans as one of the predators of the availability of turtles in nature by taking turtle eggs. The aim of the study was to determine the nesting habitat characteristics of the Lekang turtle (Lepidochelys Olivaceae) in the coastal area of Gampong Geulumpang, East Sulu, Dewantara District, North Aceh Regency. This research was carried out in November 2021, which took place on the coast of the village of Gelumpang, East Sulu, Dewantara District, North Aceh Regency. In this study, observational data collection and biophysical measurements were set at 3 stations. Station 1 (Dusun Cot U Sibak), station 2 (Dusun Pasie Kuala), and station 3 (Dusun Teupin). The distance between stations in this study was ± 2 km. Data analysis was carried out by weight body and scoring methods. Based on the results of data analysis from three observation stations at turtle nesting locations from several parameters such as beach slope is 4.5-9.3%, beach width is 10.20 -22 meters, the sand temperature is 29-32 0C, humidity is 21-28%, the size of the sand grains is 0.15322-0.31601 mm, while the coastal vegetation is 16.7-49.4%, it is concluded that the three observation stations are in the very suitable category for turtle nesting locations
PENDAMPINGAN PEMANFAATAN TERAK ATAU LIMBAH PENGECORAN TANUR KUPOLA DI KECAMATAN CEPER KLATEN JAWA TENGAH SEBAGAI AGREGAT KASAR PADA PEMBUATAN BATAKO Hariningsih, Hariningsih; Pengestu, Adam Yoga; Erlangga, Erlangga
Abdi Teknoyasa Volume 5, No. 2, Desember 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/abditeknoyasa.v5i2.1911

Abstract

Sekitar 30 industri pengecoran logam di daerah Kecamatan Ceper  Klaten masih menggunakan tanur kupola untuk melebur besi cor. Selain besi cair, peleburan besi cor dengan tanur kupola menghasilkan limbah padat yang disebut terak. Limbah terak berbentuk seperti batu namun tajam seperti pecahan kaca dan dapat menyebabkan pencemaran tanah yang mengakibatkan tanah menjadi tidak subur. Sejauh ini terak tersebut hanya digunakan untuk bahan timbunan pada sawah atau kebun, dan terkadang digunakan untuk menimbun jalan. Masalah pembuangan limbah terak ini menjadi masalah tersendiri bagi industri dan masyarakat sekitar. Oleh karena itu masyarakat dan industri perlu dilibatkan dalam penanganan limbah tersebut. Limbah terak dapat dimanfaatkan sebagai agregat kasar pada pembuatan batako. Hasil pengabdian masyarakat berupa produk batako berbahan tambah limbah terak. Selain itu penggunaan limbah terak sebagai agregat kasar pembuatan batako dapat mengurangi jumlah limbah terak di industri, mengurangi polusi tanah, menaikan nilai ekonomis limbah terak, dan dapat menurunkan biaya produksi batako. Capaian peningkatan keterampilan peserta dalam memahami materi pelatihan diukur dengan jenis pendekatan kualitatif cara wawancara. Hasil wawancara menunjukkan tingkat kepuasan yang tinggi dari peserta pelatihan. Peserta sudah memahami dan dapat membuat batako dengan bahan tambah limbah terak secara mandiri.
Klasifikasi Penyakit Daun Tanaman Tomat Menggunakan EfficientFormer Wihardi, Yaya; Erlangga, Erlangga; Himmah, Amirah Dzatul; Siregar, Herbert
Jurnal Aplikasi dan Teori Ilmu Komputer Vol 7, No 2 (2024): September 2024, Jurnal Aplikasi dan Teori Ilmu Komputer (Jatikom)
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/jatikom.v7i2.80339

Abstract

Tomatoes are crucial crops for Indonesian farmers, but they often suffer from diseases caused by fungi, bacteria, and viruses, leading to potential 40% yield loss. Current methods of spotting these diseases by eye result in costly and ineffective use of pesticides. This study focuses on a new way to classify tomato plant diseases using EfficientFormer. This method aims for high accuracy and fast inference time. The model reached an impressive 92% accuracy and takes just 0.4 seconds to identify diseases. This new approach could help farmers spot tomato plant diseases more accurately and quickly, potentially reducing economic losses and excessive pesticide use in Indonesia.
Analisis Kekuatan AC-WC Bahan Fly Ash Batu Bara sebagai Pengganti Abu Batu dengan Metode Marshall Nurdin, Ade; Erlangga, Erlangga; Nuklirullah, M.
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.9190

Abstract

Abstract: The layers contained in flexible pavement, one of which is the Asphalt Concrete-Wearing Course (AC-WC) layer, is a layer that is quickly damaged compared to other layers, because this layer is located at the top and is directly related to environmental conditions and vehicle wheel loads. One of the efforts that can be made to increase the strength of the road pavement structure in the AC-WC layer is by utilizing waste material from burning coal as a substitute for stone ash. The material used is fly ash mixed with successive levels namely (0: 100), (25:75), (50:50), (75:25) and (100:0). The optimum asphalt content (OAC) used was 5.78%. Based on the results of the physical characteristic test using the Marshall test, the fly ash material to be used meets the required specifications. As it is affected by aggregate gradation, bitumen content and compaction process, the flow rate increases simultaneously. The stability value obtained from the asphalt content of 5.781% (10%) variant is 1097.0 kg, higher than the other variants. Only 2 sample variants meet VIM specifications. Obtained optimum asphalt value of 5.75% which is close to the initial optimal asphalt estimated. Key words: Coal Fly ash, Marshall Test, AC-WC, Optimum Asphalt Content, MQ-optimum
ANALISIS PENYELENGGARAAN PROGRAM PELATIHAN TATA BOGA UNTUK MENINGKATKAN MINAT KEWIRAUSAHAAN PEREMPUAN DI PKBM KEDONDONG SAMARINDA Erlangga, Erlangga; Dwiyono, Yudo; Lukman, A. Ismail
Learning Society: Jurnal CSR, Pendidikan dan Pemberdayaan Masyarakat Vol. 5 No. 2 (2024): Desember
Publisher : Program Studi Pendidikan Masyarakat, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ls.v5i2.4842

Abstract

Penelitian ini bertujuan untuk mengungkap penyelenggaraan program pelatihan tata boga yang dilaksanakan oleh PKBM Kedondong di Kota Samarinda. Pendekatan kualitatif dengan jenis penelitian deskriptif digunakan untuk menggambarkan secara mendalam proses pelaksanaan program pelatihan tersebut. Data dikumpulkan melalui wawancara, observasi, dan studi dokumen, dengan narasumber utama Kepala PKBM Kedondong serta pelaksana pelatihan, instruktur, dan peserta. Analisis data dilakukan melalui tahapan reduksi data, penyajian data, dan penarikan kesimpulan, dengan triangulasi sumber dan teknik sebagai uji keabsahan data. Hasil penelitian menunjukkan bahwa penyelenggaraan pelatihan dilakukan melalui tiga tahapan utama yaitu sosialisasi, pelaksanaan, dan pemantauan program. Sosialisasi dilakukan untuk mengenalkan program dan menjaring peserta. Pelaksanaan program mencakup persiapan pembelajaran, penyusunan modul dan materi, penerapan prinsip pembelajaran partisipatif, serta keterlibatan instruktur yang profesional. Pemantauan dilakukan untuk memastikan peningkatan keterampilan peserta dan efektivitas program secara menyeluruh. Program ini terbukti efektif dalam meningkatkan keterampilan boga peserta, khususnya perempuan terdampak pandemi, serta mendorong terbentuknya komunitas mikro ekonomi berbasis wirausaha.
STRATEGIES TO STRENGTHEN FOOD SECURITY AMID THE COVID-19 PANDEMIC THROUGH TRAINING BUDIKDAMBER AND AQUAPONICS IN KEDUNG SOKA VILLAGE, PULO AMPEL SUBDISTRICT, SERANG REGENCY Erlangga, Erlangga; Yudistira, Andrian; Maulana, Asroful; Maulida, Aulia; Sabrawijaya, Sabrawijaya
Ekalaya: Jurnal Pengabdian Kepada Masyarakat Indonesia Vol. 3 No. 2 (2024): Ekalaya Journal
Publisher : Nindikayla Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57254/eka.v3i2.122

Abstract

COVID-19, which was declared  a  pandemic globally by WHO, is one    of  the  family of viruses that  attack  humans,  namely  attacking the human respiratory  tract.  In  March,  Indonesia  was  horrified by COVID-19. Therefore,    the  Indonesian  government imposed  rules  for the community to implement  Work  From  Home  (WFH) which  is  part of the Enactment of Restrictions on Community Activities  (PPKM)  to  reduce  the  increasing  growth  rate COVID-19 cases.   The impact   of  this  policy is that  it  can  cause  a  food crisis.  One of    the efforts  that  can be  done  to  prevent  the occurrence of  food  crisis  is    budikdamber  (fishcultivation   in  ember) and  aquaponics  with the discovery  of  agricultural  and  fishery  techniques that are as  healthy as budikdamber  and  aquaponics  are expected to    help  face  the current  problems.  This activity    has  many  benefits,  including the  fulfillment of    household  needs  and improving the  family economy.  People who  succeed  with  bukdidamber  techniques can create  business  opportunities  and  increase the development amid the  COVID-19  pandemic as it is now. After conducting  Budikdamber   (FishCultivation   in  Ember) and  Aquaponics  activities  in  Kedung  Soka Village,  Pulo  Ampel Subdistrict,  Serang  Regency, which  was carried out  by  KKM Bina Bangsa  Group  35  Participants in Kedung  Soka Village,  the  Kedung  Soka  community was very  enthusiastic  to  participate in the training of Making Catfish  Cultivation  in Ember. Through the  training,    the community  got new skills.   related to  overcoming  the  economic   crisis caused  by  the Covid-19 Pandemic
Bioecological characteristics of mangrove snail in Langsa mangrove forest, Aceh, Indonesia: Diversity and community structure Mardiah, Nur Ainun; Erlangga, Erlangga; Syahrial, Syahrial; Hadinata, Fitra Wira; Ezraneti, Riri; Barat, Welmar Olfan Basten; Leni, Yusyam
Journal of Marine Studies Volume 1, Issue 1 (March, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/joms.v1i1.15792

Abstract

The most crucial aspect of managing an ecosystem or habitat is knowledge about accompanying biota, such as snails. The research on mangrove snails in the KPH Region III Aceh City of Langsa area was conducted in November 2021 with the goal of evaluating species diversity, density, ecological index, distribution, and their link to surrounding environmental conditions. Snail data was obtained via quadrat transects, with observation stations established using purposive sampling.The snail diversity was found to be five species from four families, with the highest density found in N. planospira (03.13 ind/m2). The diversity index was low (H' ‰¤ 2.0), dominance was moderate (0.5 < C ‰¤ 0.75), and uniformity tended to be balanced (0.5 < E ‰¤ 0.75). The distribution pattern is clustered (Iδ> 1), with C. cingulata being abundant (83.33%), and C. capucinus being frequently found (50.00%), N. planospiraonly found occasionally (36.11%), and L. scabra and T. telescopium are relatively uncommon (11.11% and 0.56%, respectively), with a link to environmental variables indicating that T. telescopium prefers fine mud substrates. Meanwhile, C. cingulata, C. capucinus, L. scabra, and N. planospiralive in habitats with fine mud substrates that are more solid than T. telescopiums habitats.
Ecological characteristic of hermit crabs in Lhokseumawe mangrove forest, Aceh, Indonesia Fitriani, Fitriani; Erlangga, Erlangga; Syahrial, Syahrial; Ezraneti, Riri
Journal of Marine Studies Volume 1, Issue 1 (March, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/joms.v1i1.15795

Abstract

The study was conducted between August and September of 2021 in order to determine the density, ecological index, distribution pattern, geographic distribution, environmental factors, and the relationship between hermit crabs and environmental factors. Hermit crabs were gathered using a quadratic transect and sample plots, while environmental variables were measured in situ. PCA and CCA multivariate statistics were used to determine the characteristics and correlation between hermit crabs and environmental factors. Hermit crabs were discovered to be comprised of two species (Clibanariuslongitarsus and C. infraspinatus) and one family (Diogenidae), with the highest density found in the C. longitarsus species (1.22 ± 0.57 - 4.68 3.53 ind/m2), diversity index is categorized as moderate (2.0<H‰¤3.0), the dominance is low (0<C‰¤0.5), the distribution pattern is clustered (Iδ>1), the geographical distribution is abundant (>80%), and environmental factors are categorized as good. In addition, Stations I and II have high DO, TOM, mangrove density, C. longitarsus, and C. infraspinatus parameters, whereas Station III has high salinity, pH, and temperature, with salinity, mangrove density, and TOM being the most influential parameters on hermit crab density.
Spatial distribution and habitat suitability of seaweed on West Simeulue Island, Aceh Province, Indonesia Imamshadiqin, Imamshadiqin; Ritonga, Gara Hasonangan; Erlangga, Erlangga; Erniati, Erniati; Imanullah, Imanullah; Syahrial, Syahrial; Salmarika, Salmarika
Journal of Marine Studies Volume 1, Issue 2 (July, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/joms.v1i2.17479

Abstract

<p>Seaweed is an important biological resource for human life, serving essential ecological functions, including providing shelter and feeding grounds for marine biota. Seaweed can be found in several Indonesian waters, growing naturally or through cultivation, including in the waters around Simeulue Island. This study aimed to assess the distribution of seaweed in relation to land suitability, using oceanographic parameters in Simeulue Island waters. The research was conducted at five stations within the West Teupah District, South Teupah District, and Alafan District. In situ measurements were taken to evaluate land suitability for seaweed growth based on oceanographic parameters such as current speed, depth, substrate type, salinity, temperature, pH, and dissolved oxygen. Results indicated that seaweed in Simeulue Island waters is distributed along the coastline and attached to coral reefs and rocks at depths of 2-5 meters. The total area of seaweed distribution is approximately 351.83 hectares along a coastline of 206.12 km. The measured parameters of seaweed habitats include a pH of 7.7 to 7.9, salinity of 31-35.3 ppt, temperature of 20-30 °C, dissolved oxygen levels of 3-4.8 mg/L, depth of 2-5 meters, current speed of 0.10 to 0.60 m/s, and a sandy coral substrate. Based on these water quality and substrate parameters, the seaweed habitats in Simeulue Island are classified as highly suitable, with suitability values ranging from 64 to 82. The recorded environmental conditions collectively support optimal seaweed growth.</p>
Pengembangan dan Validasi Isi Indikator Kesulitan Belajar Pemrograman Siswa SMP Fathimah, Nusuki Syari'ati; Junaeti, Enjun; Aryanti, Andini Setia; Erlangga, Erlangga
Jurnal Evaluasi Pendidikan Vol. 16 No. 1 (2025): JURNAL EVALUASI PENDIDIKAN
Publisher : PROGRAM STUDI PENELITIAN DAN EVALUASI PENDIDIKAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jep.v16i1.54517

Abstract

Tujuan dari penelitian ini adalah untuk mengidentifikasi dan memformulasikan indikator-indikator kesulitan belajar siswa Sekolah Menengah Pertama (SMP) dalam konteks pembelajaran pemrograman. Instrumen yang dikembangkan terdiri dari 23 indikator yang dikelompokkan ke dalam tiga elemen utama: pemahaman konsep dasar algoritma, keterampilan pemrograman, dan berpikir komputasional dalam tahapan problem solving. Validasi isi dilakukan oleh enam ahli yang memiliki latar belakang di bidang pendidikan dan informatika, dengan menggunakan skala penilaian 4 poin. Data dianalisis menggunakan pendekatan Item-Level Content Validity Index (I-CVI) dan koefisien kappa modifikasi () untuk mengontrol kemungkinan kesepakatan yang terjadi secara kebetulan. Hasil menunjukkan bahwa seluruh item memiliki nilai I-CVI ≥ 0,83 dan  berkisar antara 0,82 hingga 1,00. Nilai Average-CVI sebesar 0,91 mengindikasikan bahwa instrumen memiliki validitas isi yang sangat baik. Berdasarkan saran dari para ahli, instrumen direvisi menjadi 43 butir indikator dengan nilai I-CVI dan sebesar 1,00. Instrumen ini dapat dikembangkan lebih lanjut menjadi survei persepsi guru terhadap kesulitan belajar siswa atau menjadi dasar penyusunan tes diagnostik yang ditujukan langsung kepada siswa.
Co-Authors Ade Nurdin Akbar, Syawaluddin Andika, Yudho Anisa Anisa Annisa Wolio, Nurmiyati Anom Maruta Ari Kurniawan Saputra Ariski, Firli Aryanti, Andini Setia Ashira, Nurul Ayu Andira AYU LESTARI Aziza, Widia Sahpa Nur Baehaqi Bahagia Bahagia Bambang Hartono Cut Meurah Nurul ‘Akla Daulay, Anggi Mayulina Deddy Kurniawan Wikanta Dila, Nuriana Dini, Nur Amruna Dwi Yulianti, Annisa Dwiyono, Yudo Eka Fitrajaya Rahman Endra , Robby Yuli Enjun Junaeti Erniati Erniati Erwin Erwin Eva Ayuzar, Eva Fajar, Malik Fathimah, Nusuki Syari'ati Febrina Rolin Febriza, Delia Fenty Ariani Fitri, Zakiatul Fitria, Ade Fitriani Fitriani Gurusinga, Eliana Mahesa GYMNASTIAR, GAZALI Hadinata, Fitra Wira Handayani, Meutia Hariningsih, Hariningsih Harmes, Harmes Hayatun Nufus Haykal Ramadhan, Salman Hermawan Dwi A Hermawan, Nadira Arevia Hermawan, Raihan Cagiva HIKMAH, PADEL Himmah, Amirah Dzatul Husaen, Yusril Hutwan Syarifuddin Iklas Sanubary Imamshadiqin, Imamshadiqin Iman Syahrizal Imanullah, Imanullah Irmayunita, Irmayunita Iskandar Ali Alam Jamin, Jamin Johannes Alexander Putra Judie, Rizky Rachman Julianda Sahputra, Julianda Khaidir Khaidir, Khaidir Khansa Rakha Dimas, Rocky Kurniawan, Ahmad Shaleh Kusnendar, Jajang Leni, Yusyam Likdanawati Lukman, A. Ismail Lukmanul Hakim Lusiana, Andria Mahdaliana, Mahdaliana Mainisa, Mainisa Mardiah, Nur Ainun Mariana Mariana Marzuki, Erliza Mataniari, Azhari Maulana, Asroful Maulida, Aulia Maullana Arifin, Muhammad Misrita, Misrita Mohamad Endy Y Muchammad Fauzi Muhammad Amin Muhammad Ardiansyah Muhammad Robi, Muhammad Muliani Muliani, Muliani Mulyati, Awin Munawar Khalil Munawwar Khalil, Munawwar Mutia Mutia, Mutia Mutmainnah Mutmainnah Muwardi, Haris Ningsih, Irma Fahrizal Butsi Nuklirullah, M. Nurmayanti, Nurmayanti Pamanalu, Analdi Pengestu, Adam Yoga Piantari, Erna Prabawa, Harsa Wara Prama Hartami Prasetya, Yukis Angga Prasetyo, Repki Putri, Adinda Aulia Putro, Budi Laksono Rachmawati Rusydi, Rachmawati Rahman, Erwan Rahmatul Husna, Rahmatul Ramadhan, Azizi Rasim, Rasim Riri Ezraneti Ritonga, Gara Hasonangan Rizky, Lalu Muhamad Faisal Sabrawijaya Sabrawijaya Safiyah, Resalatus Saiful Adhar salamah salamah Salsabilla, Hanum Sam Hermansyah Sariasi, Puspita Setialestari, Renny Sigalingging, Kevin Noven Siregar, Herbert Siti Suharyatun Situmorang, Devi Permata Sari Srinanda Rizki, Srinanda Sundari, Ellys Mei Sutiana Sutiana, Sutiana SYAHRIAL SYAHRIAL Syamsiar, Syamsiar Taqwan Thamrin Tia Tanjung Usman, Umaruddin Ute Chairuz M Nasution Wahyuni, Riri Wawan Gunawan Welmar Olfan Barat, Welmar Olfan Wihardi, Yaya willyansah, willyansah Winda Rahmawati Wiwin Susanty Yudistira, Andrian Zaitun, Urmila Zaki, Muhammad Radin