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Negative Total Float to Improve a Multi-Objective Integer Non-Linear Programming for Project Scheduling Compression Fachrurrazi Fachrurrazi; Abdullah Abdullah; Yuwaldi Away; Teuku Budi Aulia
International Journal of Electrical and Computer Engineering (IJECE) Vol 8, No 6: December 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (856.525 KB) | DOI: 10.11591/ijece.v8i6.pp5292-5302

Abstract

This paper presents Multi-Objective Integer Non-Linear Programming (MOINLP) involving Negative Total Float (NTF) for improving the basic model of Multi-Objective Programming (MOP) in case the optimization of the additional cost for Project Scheduling Compression (PSC). Using the basic MOP to solve the more complex problems is a challenging task. We suspect that Negative Total Float (NTF) having an indication to make the basic MOP to solve the more general case, both simple and complex of PSC. The purpose of this research is identifying the conflicting objectives in PSC problem using NTF and improving MOINLP by involving the NTF parameter to solve the PSC problem. The Solver Application, which is an add-in of MS Excel, is used to perform optimization process to the model developed. The results show that NTF has an important role to identify the conflicting objectives in PSC. We define NTF is an automatic maximum value of the activity duration reduction to achieve due date of PSC. Furthermore, the use of NTF as a constraint in MOINLP can solve the more general case for both simple and complex PSC problem. Base on the condition, we state that the basic MOP is still significant to solve the PSC complex problems using MOINLP as a sophisticated MOP technique.
Jenis-jenis Ikan Hasil Tangkapan Nelayan yang Didaratkan di Tempat Pelelangan Ikan (TPI) Kuala Tuha Kecamatan Kuala Pesisir Kabupaten Nagan Raya Abdullah Abdullah
Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 2, No 1 (2010): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi
Publisher : Universitas Syiah Kuala

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Abstract

Penelitian jenis-jenis ikan hasil tangkapan nelayan yang didaratkan di TPI (Tempat Pelelangan Ikan) Kuala Tuha Kecamatan Kuala Pesisir Kabupaten Nagan Raya dilaksanakan pada tanggal 29 s.d 31 Mei dan 27 s.d 30 Juni 2009 (bulan gelap). Penelitian ini  bertujuan menginventarisasi jenis-jenis ikan hasil tangkapan nelayan yang didaratkan di TPI Kuala Tuha Kecamatan Kuala Pesisir Kabupaten Nagan Raya. Penelitian dilakukan dengan menggunakan metode survey langsung dengan teknik sensus jenis (spesies) ikan yang didaratkan di TPI, data dianalisis menggunakan analisis deskriptif. Hasil penelitian ditemukan 2 kelas ikan yang terdiri dari 76 Spesies (43 famili 14 ordo). Jenis ikan yang paling banyak didaratkan adalah dari kelas Osteichthyes (ikan bertulang keras) yaitu Ordo Perciformes yang mencapai lebih dari 50% (Scombridae, Stromateidae, Sciaenidae,  Teraponidae, Serranidae, Mullidae, Kyphosidae, Acanthuridae, Lobotidae, Scatophagidae, Lutjanidae, Lethrinidae, Priacanthidae, Sphyraenidae, Haemulidae, Nemipteridae, Trichiuridae, Ephippidae, Mungilidae, Chandidae, Cichilidae). Dalam penelitian ini terdapat satu jenis ikan yang terancam punah/langka yaitu ikan bukum (Arothon immaculatus) dari Famili Tetraodontidae. Dalam  penelitian ini tidak semua jenis ikan dapat didaratkan di TPI Kuala Tuha hal ini disebabkan oleh beberapa faktor diantaranya faktor cuaca yang tidak mendukung sehingga banyak nelayan yang tidak pergi ke laut. Musim tangkapan sangat mempengaruhi hasil tangkapan ikan dengan demikian sangat dimungkinkan masih banyak jenis-jenis ikan yang belum diinventarisasi. 
The Relationship between the Insight Levels of Sustainable Development to the Attitude of Environmental Concern in FKIP Unsyiah Abdullah Abdullah; Djufri Djufri; Irma Kharisma
Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 11, No 2 (2019): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (193.711 KB) | DOI: 10.24815/jbe.v11i2.17172

Abstract

Environmental problems are complex problems that must be addressed immediately, and humans are the only educated agents who can save the environment so that environmental benefits can be felt sustainably. This study aims to determine the relationship between the level of insight into sustainable development (sustainable development) to the attitude of environmental care FKIP academic community Unsyiah. This research uses a descriptive correlational approach. Data collection techniques using questionnaires, blind observation, interviews, and documentation. Data analysis using Spearman correlation with a confidence level of 95% and processed using the SPSS 18.0 application. The results of the analysis show a correlation coefficient of 0.345 which means there is a sufficient correlation between the level of insight into sustainable development with an attitude of environmental awareness. The significance value obtained from the Spearman correlation test is 0.345 ( 0.05), meaning that there is a significant relationship between the level of insight into sustainable development with an attitude of environmental awareness. The correlation coefficient has a positive value of 0.345, so insights are positively and significantly related to caring attitudes. The results of this study indicate that the level of insight into sustainable development is positively related to the attitude of environmental awareness in the FKIPUnsyiah academic community.
Perception of local community in surrounding of human-elephant conflict area to elephant conservation and their habitat in sub-district of Lembah Seulawah, Aceh Besar Abdullah Abdullah; M. Ali Sarong; Putri Hilmayanti
Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 9, No 1 (2017): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi
Publisher : Universitas Syiah Kuala

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Abstract

Sumatran Elephant (Elephas maximus sumatranus) is one of Indonesia's biodiversity. This animal classified in endangered species. Habitat loss, degradation, habitat fragmentation and exploitation of resources due to human activities lead to the unavailability of habitat for wildlife. Fragmentation of wildlife habitat frequently cause loss of natural habitat. The purpose of this research are (1) to describe the Sumatran Elephant habitat disturbance, (2) to determine the extent of damage caused by the Sumatran Elephant and (3) to determine the local community perception sorrounding of human-elephant conflict area on the conservation of elephants and their habitats in Lembah Seulawah, Aceh Besar. Collecting data used descriptive research with quantitative approach and proportional sampling tehnique. The study was conducted in Lembah Seulawah, Aceh Besar in May 2016. The data collected using field survey, questionnaire and deep interview. Research data showed in descriptive and percentage. Analysis of the level of damage to the quality scale, and analysis of local community of perceptions using chi-square. The results of the study are (1) Disturbance plantation community in Lembah Seulawah between 0.5% - 2%, (2) Damage to habitat in Gampong Panca and Gampong Teuladan medium category, while Gampong Lamkubu is in lightweight category and (3) the public perception was good (X2count X2table, 35.54 16.9) and support to cponserve of sumatran elephant and their habitat.
Penggunaan Sistem Informasi Geografis (SIG) dalam Mengestimasi Daya Dukung Habitat Gajah Sumatera (Elephas maximus sumatranus Temminck) Sebagai Salah Satu Alternatif Solusi Konflik dengan Lahan Pertanian Abdullah Abdullah; Joko T. Iskandar; Devi N. Choesin; A. Sjarmidi
Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 1, No 1 (2009): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi
Publisher : Universitas Syiah Kuala

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Abstract

Human elephant conflict surrounding agriculture and forest became higher a long year. The fenomena cannot be solved until now. We proposed new technigue, Geographic Information System (GIS)  for solving the problem mainly in agriculture area. The aim of this research for estimating habitat carrying capacity of Sumatran elephant habitat (Elephas maximus sumatranus Temminck) using Geographic Information System. Habitat and animal parameter estimated consist of biotic and abiotic factors. The factors analized suitability analysis using software Autocad Map 2000 and Arcview 3.1. this research result showed habitat carrying capacity in secondary forest (wet season :0,89±0,11 s.d 0,96±0,12 elephant/km²; dry:0,55±0,07 s.d 0,59 ± 0,08 elephant/km²) higher than primary forest (wet season: 0,20±0,02 to 0,26±0,05 elephant/km²  dry: 0,09±0,01 s.d 0,11±0,02 ind/km²). Based on suitability analysis estimated elephant carrying capacity in Tessonilo Forest in wet season (689,45±51,67 to 750,05± 109,14 elephants) higher than dry season (397,85 ±48,45 to 434,88±61,51 elephants). Elephant numbers fluctuated seasonally can be used for planting time strategy in agrculture system. The estimation of habitat carrying capacity did not consider habitat use seasonally.
Inventarisasi Burung di Pulau Tuangku, Kecamatan Pulau Banyak Barat, Kabupaten Aceh Singkil Devi Syafrianti; Abdullah Abdullah; Yaumil Istiqlal M. Nur; Sarvina Sulastri
Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 13, No 1 (2021): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jbe.v13i1.17756

Abstract

Burung merupakan satwa liar yang memiliki kemampuan hidup hampir semua tipe habitat, dan mempunyai mobilitas yang tinggi dengan kemampuan adaptasi terhadap berbagai tipe habitat yang luas. Penelitian ini bertujuan untuk menginventarisasi jenis burung yang terdapat di Pulau Tuangku Kecamatan Pulau Banyak Barat Kabupaten Aceh Singkil. Pengumpulan data dilakukan dengan metode observasi lapangan (field method) menggunakan teknik Line Transect. Lokasi penelitian terbagi menjadi tiga stasiun. Stasiun I (kawasan pemukiman), Stasiun II (kawasan pantai) dan Stasiun III (kawasan hutan) dengan masing-masing stasiun terdapat 5 garis transek. Data dianalisis secara deskriptif yang meliputi deskripsi burung, gambar dan hierarki taksonomi. Pengumpulan data lapangan dilakukan pada tanggal 11 sampai dengan 16 Oktober 2019. Berdasarkan hasil penelitian yang telah dilakukan, ditemukan sebanyak 24 jenis burung yang diklasifikasikan ke dalam 7 ordo dan 18 familia. Jumlah spesies burung yang diamati pada stasiun I (pemukiman) ditemukan 13 jenis burung dengan jumlah total 394 individu, pada stasiun II (pantai) ditemukan 14 jenis burung dengan jumlah total 1170 individu, dan stasiun III (hutan) ditemukan 17 jenis burung dengan jumlah total 432 individu. Jadi, jumlah burung secara keseluruhan yang ditemukan di Pulau Tuangku Kecamatan Pulau Banyak Barat Kabupaten Aceh Singkil adalah 1996
Preferensi Makan Gajah Sumatera (Elephas maximus sumatranus) di Kawasan Hutan Cagar Alam Jantho Abdullah Abdullah; Dahlian Dahlian; Mukhlisin Mukhlisin
Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 1, No 1 (2009): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (103.718 KB)

Abstract

The research about food preference of Sumatran elephant have conducted in Jantho Natural Reserve Aceh Besar District inAcehProvincein April to June 2006. The aim of this research was to identified elephant food species vegetation in elephant habitat. This research used direct observation method in 20 transect. We found 22 species eaten Sumatran elephant in Jantho Natural Reserve Aceh Besar District. The food preference consist of Moraceae, 11 species (18,74%), Poaceae, 15 species (15,64%), Arecaceae, 9 species (14,52%), Euphorbiaceae, 6 spesies (9,95%), Mimosaceae, 5 spesies (6,25%), Caesalpiniaceae, 2 spesies (3,30%), Cyperaceae,4 spesies, (3,27%), Bombacaceae, 2 species (3.23 %), Gleicheniaceae, 4 species (3.22%), Zingiberaceae 4 species (2.77%),Fabaceae, 2 species (2.58%), Musaceae, 1 species (2,10%), Apocynaceae, 2 species (1.94 %), Ebonaceae, 1 species (1,70%), Sapindaceae, 1 species (1.41%).
The preliminary study on feeding behavior of male and female little egret (Egretta garzetta) in mangrove and rice field habitats based on peck frequency Abdullah Abdullah; Intan Zahara; Gaius Wilson
Aceh Journal of Animal Science Vol 1, No 1: July 2016
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (531.024 KB) | DOI: 10.13170/ajas.1.1.4143

Abstract

The objective of  the present study was to study the differences in feeding behavior from peck frequency and type of diets, between male and female little egret (Egretta garzetta) in two different habitats, mangrove and rice fields of Banda Aceh, Sumatra, Indonesia. Focal animal sampling was used to study the feeding behavior of randomly selected birds from 07.00 AM to 06.00 PM in July 2015. Statistical analysis was conducted using t-test to test for differences between male and female peck frequency and habitats. For the combined data of both males and females, the average peck frequency of little egret (E. garzetta) observed in the mangrove and rice fields was 238.8 and 226.2 respectively. Male E. garzetta peck frequency observed was 240 pecks in mangrove habitat while female peck frequency was 225 pecks in rice field habitat. The results of our study showed that there is a significant difference in the peck frequency of little egrets observed in the two habitats (mangrove and rice fields) and between male and female E. garzetta. 
Frequency of Daily Behavior of Indian Blue Peak Bird (Pavo cristatus) in Gurun Putih Lestari Safari Park, Jantho City, Aceh Besar District Dian Monika; Abdullah Abdullah; Samingan Samingan; Safrida Safrida; Devi Syafrianti
Jurnal Ilmiah Mahasiswa Pendidikan Biologi Vol 5, No 4 (2020): NOVEMBER 2020
Publisher : Jurnal Ilmiah Mahasiswa Pendidikan Biologi

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Abstract

 ABSTRACTThe Indian blue peacock (Pavo cristatus) is an introduced bird from India. The presence of this bird provides many economic benefits, one of which is the use of its beautiful feathers. One of the Exsitu conservation areas that conserves Indian blue peacocks is the Jantho City Sustainable White Desert Safari Park, located in Aceh, Indonesia. Considering that not much scientific information has been recorded about this bird, including its daily behavior, it is necessary to do research. Data collection was conducted in August-September 2020. This study aims to determine the daily behavior of male and female Indian blue peafowl (Pavo cristatus) in the Lestari White Desert Safari Park. The approach in this research is a qualitative descriptive approach. The data were obtained from the observation and documentation of the Indian blue peacock. The results showed that daily behaviors were found including self-care 383 times (27.51%), moving 471 times (33.84%), ingestive 357 times (25.65%), making sounds 20 times (1.44%). %), resting 142 times (10.20%) and social as much as 19 times (1.36%). The highest daily behavior frequency in male Indian blue peafowl was self-care behavior as much as 251 times (37.02%) and female Indian blue peacock on mobile behavior as much as 277 times (38.94%). The lowest frequency of daily behavior in male Indian blue peacocks, namely social behavior in fighting activities as much as 6 times (0.26%) and female Indian blue peacocks in vocal behavior, to be precise, emitted a sound when there was a threat, namely 2 times (0.08%) .Keywords: Indian blue peacock, Exsitu conservation, daily behavior.ABSTRAKBurung merak biru India (Pavo cristatus) merupakan burung introduksi dari India. Kehadiran burung ini memberikan banyak manfaat dari segi ekonomi salah satunya pemanfaatan pada bulunya yang indah. Salah satu kawasan konservasi Exsitu yang melestarikan burung merak biru India adalah Taman Safari Gurun Putih Lestari Kota Jantho yang terletak di Aceh, Indonesia. Mengingat belum banyak informasi ilmiah yang didata tentang burung ini termasuk perilaku harian, maka perlu dilakukan penelitian. Pengumpulan data dilakukan pada bulan Agustus-September 2020. Penelitian ini bertujuan untuk mengetahui perilaku harian burung merak biru India jantan dan betina (Pavo cristatus) di Taman Safari Gurun Putih Lestari. Pendekatan dalam penelitian ini adalah pendekatan deskriptif kualitatif. Data diperoleh dari observasi dan dokumentasi burung merak biru India. Hasil penelitian menunjukkan perilaku harian yang ditemukan diantaranya perawatan diri sebanyak 383 kali (27,51%), bergerak sebanyak 471 kali (33,84%), ingestif sebanyak 357 kali (25,65%), bersuara sebanyak 20 kali (1,44%), istirahat sebanyak 142 kali (10,20%) dan sosial sebanyak 19 kali (1,36%). Frekuensi perilaku harian tertinggi pada burung merak biru India jantan yaitu perilaku perawatan diri sebanyak 251 kali (37,02%) dan burung merak biru India betina pada perilaku bergerak sebanyak 277 kali (38,94%). Frekuensi perilaku harian terendah pada burung merak biru India jantan yaitu perilaku sosial dalam aktivitas berkelahi sebanyak 6 kali (0,26%) dan burung merak biru India betina pada perilaku bersuara tepatnya mengeluarkan suara saat adanya ancaman yaitu sebanyak 2 kali (0,08%).Kata Kunci: Burung merak biru India, konservasi Exsitu, perilaku harian.
The effect of leaves extract Sambung Nyawa leaves (G. procumbens L.) against Crop Cabbage Caterpillar mortality (C. binotalis Zell.) Wirda Yuliani; Safrida safrida; Mimie Saputri; Supriatno Supriatno; Abdullah Abdullah
Jurnal Ilmiah Mahasiswa Pendidikan Biologi Vol 5, No 1 (2020): FEBRUARI 2020
Publisher : Jurnal Ilmiah Mahasiswa Pendidikan Biologi

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Abstract

Crop Cabbage Caterpillars (Crocidolomia binotalis Zell.) are included in the orderLepidoptera. C. binotalis pest is a pest that attacks mustard plants. Pest controlefforts carried out by farmers in Indonesia still using syntetic insecticides thatcausing negatif effects on the environment, human health and increasing pestpopulations. Therefore, controlling which has been developed is using bioinsecticides namely natural bioactive compounds derived from plants one of which isa plant are plants Sambung Nyawa leaves (Gynura procumbens L.). The purpose ofthis study was to determine the effect of leaves extract Sambung Nyawa leaves (G.procumbens L.) against Crop Cabbage Caterpillar mortality (C. binotalis Zell.) anddetermine the concentration (LC 50) Sambung Nyawa leaves extract (G. procumbensL.) effective on mortality Crop Cabbage Caterpillar (C. binotalis Zell.). The methodused is an experimental method through a quantitative approach with a completelyrandomized design pattern (CRD) consisting of 6 treatments and 4 repetitions.Toxicity tests for Crop Cabbage Caterpillars (C. binotalis Zell.) was carried out on afield scale. Data were analyzed using Variant Analysis (ANAVA) and carried outfurther tests in the form of real difference test (LSD) and probit regression analysis.Research results F arithmetic gt; F table = 537.87 gt; 2.77 using α = 0.05. Theadministration of the Sambung Nyawa leaves (G. procumbens L.) extractsignificantly affected the mortality of Crop Cabbage Caterpillars (C. binotalis Zell.).The best concentration extract which caused 50% (LC 50) death of Crop CabbageCaterpillars (C. binotalis Zell.) is 3,000 ppm. Keywords: Sambung Nyawa leaves, Bioinsecticide, Crop Cabbage Caterpillars. Ulat Crop Kubis (Crocidolomia binotalis Zell.) termasuk dalam ordo Lepidoptera. Hama C. binotalis merupakan hama yang menyerang tanaman sawi. Usaha pengendalian hama yang dilakukan oleh petani di Indonesia masih sering menggunakan insektisida sintetis sehingga menyebabkan efek negatif bagi lingkungan, kesehatan manusia, dan meningkatnya populasi hama. Saat ini pengendalian Ulat Crop Kubis (C. binotalis Zell.) dengan penggunaan Bioinsektisida yaitu senyawa bioaktif alamiah dari tumbuhan, salah satu tumbuhan itu adalah tumbuhan Sambung Nyawa (Gynura procumbens L.). Tujuan dari penelitian ini adalah mengetahui pengaruh ekstrak daun Sambung Nyawa (G. procumbens L.) terhadap mortalitas hama Ulat Crop Kubis (C. binotalis Zell.) serta mengetahui Lethal Consentrastion (LC50) pemberian ekstrak daun Sambung Nyawa (G. procumbens L.) terhadap mortalitas Ulat Crop Kubis (C. binotalis Zell.). Metode yang digunakan  adalah metode Eksperimental melalui pendekatan kuantitatif dengan pola Rancangan Acak Lengkap (RAL) yang terdiri dari 6 perlakuan dan 4 kali pengulangan. Uji toksisitas terhadap Ulat Crop Kubis (C. binotalis Zell.) dilakukan pada skala lapangan. Data akan dianalisis menggunakan Analisis of Varian (ANOVA) kemudian dilakukan uji lanjutan yaitu uji beda nyata terkecil (BNT) dan dilakukan analisis regresi probit. Pemberian ekstrak daun Sambung Nyawa (G. procumbens L.)  berpengaruh nyata terhadap mortalitas ulat Crop Kubis (C. binotalis Zell.) konsentrasi yang paling efektif ialah konsentrasi 5.000 ppm yang menyebabkan kematian hingga 100%. Konsentrasi ekstrak yang menyebabkan 50% (LC50) kematian Ulat Crop Kubis (C. binotalis Zell.) adalah 3.000 ppm. Kata kunci: Daun Sambung Nyawa, Bioinsektisida, Ulat Crop Kubis.