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Jurnal Matematika Sains dan Teknologi

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Published by Universitas Terbuka

ISSN : 14111934 EISSN : 24429147 DOI : -

Core Subject : Education, Agriculture,

Agriculture, Biological Sciences & Forestry Mathematics Other

Merupakan media informasi dan komunikasi para praktisi, peneliti, dan akademisi yang berkecimpung dan menaruh minat serta perhatian pada pengembangan Matematika, ilmu pengetahuan dan teknologi. Diterbitkan oleh Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Terbuka.

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Articles 403 Documents

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PERHITUNGAN TAMPANG LINTANG DIFERENSIAL HAMBURAN ELASTIK ELEKTRON-ARGON PADA 10,4 EV DENGAN ANALISIS GELOMBANG PARSIAL Settings Paken Pandiangan; Suhartono
Jurnal Matematika Sains dan Teknologi Vol. 5 No. 2 (2004)
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (575.796 KB)

It has been calculated theoretically using the partial wave methods for the elastic scattering differential cross-section of electron-argon at 10.4 eV. The wave function from Schrodinger equation was computed by the Numerov integration methods. For simplicity of scattering system , the Gaussian potential form has been employed. For comparison between theoretical and experimental approach then we used the test. The for this research is 2.386 that shows this calculation is good.

PENGARUH KADMIUM TERHADAP GANGGUAN PATOLOGIK PADA HATI TIKUS PERCOBAAN Anna Ratnaningsih
Jurnal Matematika Sains dan Teknologi Vol. 4 No. 1 (2003)
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (365.44 KB)

Cadmium is a toxic heavy metal which causes of environmental pollution and toxic effect to the human and animal life. The specific objectives of the research were 1) to analyze cadmium content of rice and 2) to identify the effect of cadmium on liver function. The failure of liver’s function is indicated by accumulation of cadmium on liver, SGOT value and SGPT value in the serum of Wistar rats. Cadmium was administered by adding it in drinking water. The levels were composed based on highest level of cadmium found in rice. This study was performed by using four cadmium’s concentrations on drinking water which are 0 mg/L (control); 0,06 mg/L; 6,6 mg/L and 66 mg/L. Observation was conducted during 0 week; 2 weeks; 4 weeks; 6 weeks and 8 weeks. The result showed that the exposure of cadmium through drinking water caused pathophysiology effect in rats such as increasing of enzymes SGPT & SGOT and accumulation of cadmium in liver. Pathological effects such as cell degeneration of liver were also observed.

STUDI KANDUNGAN NUTRISI LIMBAH MEDIA TANAMJAMUR TIRAM PUTIH (PLEUROTUS OSTREATUS) UNTUK PAKAN TERNAK RUMINANSIA Eko Yuliastuti ES; Adhi Susilo
Jurnal Matematika Sains dan Teknologi Vol. 4 No. 1 (2003)
Publisher : LPPM Universitas Terbuka

Growth media waste of white oyster mushroom cultivation can be used as ruminant feed. We observed the nutrient content of the growth media waste. The focus is on the protein, carbohydrate, mineral and crude fiber. The protein, calcium and phosphor content of white oyster mushroom growth media waste is higher than the protein content in the media before it was used for mushroom cultivation. However, the fat content is lower after the media was used than control (the media before it was used). The difference is caused by microorganism degradation. The growth media waste can be used as ruminant feed up to 75 % of total forage dry matter without any negative effect.

SUATU STUDI TENTANG UJI HIDUP DIPERCEPAT TEGANGANBERTINGKAT: PERKEMBANGAN MUTAKHIR Zanzawi Soejoeti
Jurnal Matematika Sains dan Teknologi Vol. 4 No. 1 (2003)
Publisher : LPPM Universitas Terbuka

This paper is reviewing the development of life testing data analysis of lie testing conducted in normal stress condition; stronger than normal stress (or constant stress accelerated life testing); and step stress accelerated life testing. It used exponential life test distribution model, log-normal accelerated model and tempered failure rate step stress model. It is completed by describing several problem for the future research.

ANALISIS KAUSAL MASA STUDI MAHASISWA PROGRAM STUDI MATEMATIKA UNIVERSITAS ANDALAS DENGAN MENGGUNAKAN METODE CART Izzati Rahmi; Hazmira Yozza
Jurnal Matematika Sains dan Teknologi Vol. 21 No. 1 (2020)
Publisher : LPPM Universitas Terbuka

To provide a quality and sustainable education, each study program needs to evaluate the effectiveness and productivity of education, one of which is using indicator of the length of the study. The length of study is influenced by various factors. In this study observations and evaluations of the factors affecting the study period of students of Study Program of Mathematics at Andalas University were conducted by using CART (Classification and Regression Tree) method. The results showed that the most significant factor influencing the length of the study is the Grade Point Average (GPA). Students with high GPA will have a higher chance of graduating on time. Another factor influencing the length of the study is student achievement during high school. Students who consistently perform well (always get the highest rank) when in high school have a high chance of graduating on time. The analysis also showed that students who joined the organization while in high school had a higher chance of graduating on time than those who did not participate. The interesting thing is the students who choose the Study Program of Mathematics at Andalas University as the third choice had a higher chance of graduating on time than the students who choose it as the first or second choice. Dalam upaya menyelenggarakan pendidikan yang berkualitas dan berkesinambungan, maka setiap program studi perlu melakukan evaluasi terhadap efektifitas dan produktivitas pendidikan, salah satunya dengan menggunakan indikator masa studi. Masa studi mahasiswa dipengaruhi oleh berbagai faktor. Dalam penelitian ini dilakukan analisis terhadap faktor-faktor yang mempengaruhi masa studi mahasiswa Program Studi Matematika Universitas Andalas dengan menggunakan metode CART. Hasil penelitian menunjukkan bahwa faktor yang paling signifikan mempengaruhi masa studi mahasiswa adalah Indeks Prestasi Kumulatif (IPK). Mahasiswa dengan IPK tinggi akan mempunyai peluang lulus tepat waktu lebih tinggi. Faktor lain yang berpengaruh adalah prestasi mahasiswa sewaktu SMA. Mahasiswa yang konsisten berprestasi baik (selalu juara) ketika SMA mempunyai peluang yang tinggi untuk lulus tepat waktu. Hasil analisis juga menunjukkan bahwa mahasiswa yang mengikuti organisasik etika SMA mempunyai peluang lulus tepat lebih tinggi dibandingkan yang tidak ikut organisasi. Suatu hal yang cukup menarik adalah berdasarkan urutan pilihan ketika memasuki perguruan tinngi, kelompok mahasiswa yang memilih Program Studi Matematika Universitas Andalas sebagai pilihan ketiga justru memiliki peluang lulus tepat waktu yang lebih tinggi dibandingkan kelompok mahasiswa yang memilih matematika sebagai pilihan pertama atau kedua.

MULTIPLE CORRESPONDENCE ANALYSIS (MCA) UNTUK MEMETAKAN PROVINSI DI INDONESIA BERDASARKAN DATA POTENSI DESA DALAM UPAYA MITIGASI BENCANA Oki Dwipurwani
Jurnal Matematika Sains dan Teknologi Vol. 21 No. 1 (2020)
Publisher : LPPM Universitas Terbuka

The problem of the disaster becomes an important issue related to the resilience of an area in dealing with it. So it becomes the government's priority to determine excellent and appropriate disaster mitigation policies. Data is essential in supporting the mitigation policy. So the purpose of this study is to map the area in the form of plots of 34 provinces in Indonesia based on data on the number of villages that have disaster mitigation efforts and types of disasters. The data used is sourced from the Central Statistics Agency (CSA). Mapping uses the Multiple Correspondence Analysis (MCA) method. The results showed that the provincial MCA plot with the number of villages in disaster mitigation efforts explained 93.2% of the diversity of the data. The plot shows that some provinces have a high level of Mitigation efforts in their villages. Meanwhile, the Provincial MCA plot, with its type of disaster, explained the diversity of data at 78.6%. The plot shows that several provinces need attention because they have a large number of villages affected by the disaster. Masalah kebencanaan menjadi isu penting yang berhubungan dengan ketahanan suatu daerah dalam menghadapi bencana, sehingga hal tersebut menjadi prioritas pemerintah untuk menentukan kebijakan mitigasi bencana yang baik dan tepat. Oleh karena data merupakan hal penting dalam mendukung kebijakan mitigasi tersebut, sehingga tujuan penelitian ini adalah untuk memetakan daerah berupa plot 34 provinsi di Indonesia berdasarkan jumlah desa yang memiliki upaya mitigasi bencana dan jenis bencananya. Data yang digunakan bersumber dari Badan Pusat Statistik (BPS) dan pemetaan menggunakan metode Multiple Correspondence Analysis (MCA). Hasil penelitian menunjukan bahwa plot MCA provinsi dengan jumlah desa dalam upaya mitigasi bencana mampu menerangkan 93,2% keragaman data. Plot memperlihatkan bahwa beberapa provinsi telah memiliki tingkat upaya mitigasi yang tinggi di desanya. Sementara itu, plot MCA Provinsi dengan jenis bencananya mampu menerangkan keragaman data sebesar 78,6%. Plot tersebut menunjukkan bahwa ada beberapa provinsi yang perlu mendapatkan perhatian karena memiliki jumlah desa yang cukup banyak terdampak bencana.

PENGARUH REKAYASA PENGAIRAN TERHADAP PRODUKTIVITAS BUDIDAYA PADI (ORYZA SATIVA) SAWAH Raflen Aril Gerungan; Mecky Christofel Telis Pandelaki
Jurnal Matematika Sains dan Teknologi Vol. 21 No. 1 (2020)
Publisher : LPPM Universitas Terbuka

Rice farming always experiences water shortages in dry season which result in low productivity. In order to overcome this problem, efforts are needed in the form of irrigation technology (intermittent and water-saturated condition). The aims of this study is to determine the effect of intermittent irrigation and water-saturated condition irrigation on the production of rice plants. This study used a randomized block design (RCBD) as an environmental design with a split plot design. This study was conducted by making a plot of 4 x 6 meters, totaling to 24 plots. Between every two plots, there is a waterway 50 centimeters wide. Each plot has a waterway for water intake and discharge. Intermittent irrigation treatment was conducted by flooding the plots by water as high as 5 centimeters 3 times at 0–9 HST, 15–29 HST, 35–70 HST, and water drying was also carried out three times at 9–15 HST, 29–35 HST, and 70–80 HST. Water-saturated condition irrigation treatment was conducted by leaving the plots in a state of water saturation without any stagnant water from 0 HST until the production phase. During the treatment of intermittent and water-saturated condition irrigation, fertilizer had been given at a dose of 600 kg/ha, 800 kg/ha, 1.000 kg/ha and 1.200 kg/ha. The parameters observed in this study were the number of active tillers, the number of ears per panicle, the weight of a thousand grains, and the weight of the saplings. The results showed that intermittent and water-saturated condition irrigation did not have a significantly different effect on each parameter of rice production. The highest dry weight production both in intermittent and water-saturated condition irrigation was found in the plot with 1.200 kg/ha fertilizer and the lowest dry weight production was from the plot with 600 kg/ha fertilizer. Kegiatan pertanian padi sawah selalu mengalami kendala kekurangan air di musim kemarau yang berdampak pada produktivitas yang rendah. Guna mengatasi masalah ini maka diperlukan upaya berupa rekayasa pengairan. Tujuan penelitian ini untuk mengetahui pengaruh rekayasa pengairan berselang dan macak-macak terhadap hasil produksi padi sawah. Penelitian ini menggunakan rancangan acak kelompok (RAK) sebagai rancangan lingkungan dengan rancangan perlakuan petak terbagi (split splot). Penelitian dilakukan dengan membuat petakan sebesar 4 x 6 m berjumlah 24 petak. Di antara petakan terdapat saluran air dengan lebar 50 cm. Setiap petak dibuat pintu untuk pemasukan dan pengeluaran air. Perlakuan pengairan berselang dilakukan dengan cara petak digenangi air setinggi 5 cm yang dilakukan sebanyak 3 kali pada 0–9HST, 15–29 HST, 35–70 HST, dan pengeringan air yang juga dilakukan sebanyak tiga kali yaitu pada 9–15 HST, 29–35 HST, dan 70–80 HST. Perlakuan pengairan macak-macak dilakukan dengan membuat petak percobaan selalu dalam keadaan jenuh air tanpa ada air yang tergenang mulai dari 0 HST hingga fase produksi. Pada perlakuan pengairan berselang dan macak-macak, juga diberi pupuk dengan dosis 600 kg/ha, 800 kg/ha, 1.000 kg/ha dan 1.200 kg/ha. Parameter yang diamati pada penelitian ini adalah jumlah anakan aktif, jumlah bulir per malai, berat seribu butir, dan berat ubinan.Hasil penelitian menunjukan rekayasa pengairan berselang dan macak-macak tidak memberikan pengaruh yang berbeda nyata pada setiap parameter produksi padi. Produksi berat kering panen tertinggi baik pada pengairan berselang maupun macak-macak terdapat pada petak yang diberi pupuk 1.200 kg/ha dan produksi berat kering terendah terdapat pada petak yang diberi pupuk 600 kg/ha.

PENGELOLAAN EKOWISATA MANGROVE BERDASARKAN DAYA DUKUNG EKOSISTEM DAN PERSEPSI MASYARAKAT Wiharso; Ernik Yuliana; Eddy Supriono
Jurnal Matematika Sains dan Teknologi Vol. 21 No. 1 (2020)
Publisher : LPPM Universitas Terbuka

Currently, mangrove ecotourism is interesting by the community. Berakit Village, Teluk Sebong Subdistrict, Bintan Regency, Riau Islands Province has a mangrove ecosystem that is used as an ecotourism area and is starting to be visited by many visitors. The aim of the study was to analyze the management of mangrove ecotourism based on the carrying capacity of the ecosystem and community perceptions. Data collection on mangrove potential was carried out through a mangrove inventory on 10 transect lines, perception and socio-economic data collection was carried out through interviews by giving questionnaires to respondents, as many as 60 surrounding communities and 30 visitors, with a simple random sampling technique. Data analysis using the Tourism Conformity Index (IKW), Carrying Capacity Area (DDK) ecotourism for roaming tours of mangrove tracks. The results showed that IKW reached 87.50% (very suitable), and DDK ecotourism mangrove tracks with wooden bridges were 214 people per day, while for mangrove cruising tours boating was 231 people per day. Respondents' perceptions of mangrove ecotourism and their management are good, and have the potential to be developed for ecotourism activities. The ecotourism management strategy that can be chosen is to promote and publicize mangrove tourism in Berakit Village, develop attractive ecotourism packages, provide garbage dumps at the crowds and do beach cleaning which is affected by pollution from oil spills. Ekowisata mangrove saat ini banyak diminati oleh masyarakat. Desa Berakit, Kecamatan Teluk Sebong, Kabupaten Bintan, Provinsi Kepulauan Riau mempunyai ekosistem mangrove yang dijadikan sebagai kawasan ekowisata dan mulai banyak dikunjungi oleh masyarakat. Tujuan penelitian adalah menganalisis pengelolaan ekowisata mangrove berdasarkan daya dukung ekosistem dan persepsi masyarakat. Pengambilan data potensi mangrove dilakukan melalui inventarisasi mangrove pada 10 jalur transek, pengambilan data persepsi dan sosial ekonomi dilakukan melalui wawancara dengan memberi kuesioner kepada 90 responden, 60 masyarakat sekitar dan 30 pengunjung, dengan teknik simple random sampling. Analisis data menggunakan Indeks Kesesuaian Wisata (IKW), Daya Dukung Kawasan (DDK) ekowisata untuk wisata jelajah mangrove track. Hasil penelitian menunjukkan bahwa IKW mencapai 87,50% (sangat sesuai), dan DDK ekowisata mangrove track dengan jembatan kayu adalah 214 orang/hari, sedangkan untuk wisata jelajah mangrove dengan berperahu adalah 231 orang/hari. Persepsi responden tentang ekowisata mangrove dan pengelolaannya adalah baik, serta berpotensi untuk dikembangkan untuk kegiatan ekowisata. Strategi pengelolaan ekowisata yang dapat dipilih adalah melakukan promosi dan publikasi mengenai ekoswisata mangrove di Desa Berakit, mengembangkan paket ekowisata yang menarik, menyediakan tempat pembuangan sampah pada titik keramaian dan melakukan pembersihan pantai yang terdampak pencemaran akibat tumpahan minyak.

STRATEGI PENGELOLAAN HUTAN MANGROVE DI DESA MOJO KECAMATAN ULUJAMI KABUPATEN PEMALANG JAWA TENGAH: Mangrove Forest Management Strategy in Mojo Village, Ulujami District, Pemalang Regency, Central Java Muali Muali
Jurnal Matematika Sains dan Teknologi Vol. 21 No. 1 (2020)
Publisher : LPPM Universitas Terbuka

The existence of mangrove forests in Indonesia has been decreased both the quality and quantity of its area each year. Appropriate management strategies are needed in order to prevent environmental damage and increase the value of economic benefits to the surrounding community. The purpose of this study is to analyze the broad relationship of mangroves to fishermen's catches, analyze the factors that cause damage to mangrove forests, calculate the value of economic benefits to mangrove forests and develop a mangrove forest management strategy in Mojo Village, Ulujami District, Pemalang Regency. The method used in this study is a descriptive method that provides an overview of the strategy for developing mangrove forest management in Mojo Village. During the last three years of 2015 to 2017 the area of the mangrove forest of Mojo Village has decreased significantly from 2015 covered an area of 13,52 Ha to 11, 37 Ha in 2016 and in 2017 to 8.62 Ha, the decrease in the mangrove forests turns out to affect the catches of fishermen.Regression analysis results obtained every reduction of 1 Ha of extensive mangrove forests decreased 338,732 kg of mullet catches.Factors causing damage to mangrove forests in Mojo Village are human activitiesi.e. felling, utilization of mangrove leaves, disposal of organic and inorganic waste and natural factors are due to abrasion and sedimentation. The total economic benefit value of the Mojo Village mangrove ecosystem is Rp. 29.120.000.795.00 per year with an area of 8.62 Ha of mangrove forest in 2017 and a pond area of 425 Ha. Based on the results of the formulation of the strategy using the SWOT analysis, SO strategies are obtained in theincrease the role of fisheries institutions and human resources, increase stakeholder support,facilitate facilities and infrastructure, group growth, increase tourism visits and increase environmental resources. Keberadaan hutan mangrove di Indonesia mengalami penurunan baik kualitas maupun kuantitas areanyasetiap tahun.Strategi pengelolaan yang tepat sangat diperlukan dalam rangka mencegah kerusakan lingkungan dan meningkatkan nilai manfaat secara ekonomi untuk masyarakat sekitarnya. Tujuan dari penelitian ini adalah untuk menganalisis hubungan luas mangrove terhadap hasil tangkapan nelayan, menganalisis faktor penyebab kerusakan hutan mangrove, menghitung nilai manfaat ekonomi terhadap hutan mangrove dan menyusun strategi pengelolaan hutan mangrove di Desa Mojo, Kecamatan Ulujami, Kabupaten Pemalang. Metode yang digunakan dalam penelitian ini adalah metode deskriptif yang memberi gambaran tentang strategi pengembangan pengelolaan hutan mangrove di Desa Mojo. Selama tiga tahun terakhir tahun 2015 sampai dengan 2017 luasan hutan mangrove Desa Mojo mengalami penurunan cukup signifikan yaitu: Tahun 2015 seluas 13,52 Ha menjadi 11, 37 Ha pada tahun 2016 dan tahun 2017 menjadi 8,62 Ha. Penurunan luasan mangrove ternyata berpengaruh terhadap hasil tangkapan nelayan, hasil analisa regresi didapat setiap berkurangnya 1 Ha luas mangrove mengakibatkan berkurangnya hasil tangkapan ikan belanak sebanyak 338,732 kg. Faktor penyebab kerusakan hutan mangrove di Desa Mojo adalah kegiatan manusia yaitu: penebangan, pemanfaatan daun mangrove, pembuangan sampah organik dan anorganik dan faktor alam adalah karena abrasi dan sedimentasi. Nilai manfaat ekonomi total ekosistem mangrove Desa Mojo diperoleh Rp. 29.120.000.795,00 per tahun dengan luas hutan mangrove tahun 2017 adalah 8,62 Ha dan luas lahan tambak seluas 425 Ha. Berdasarkan hasil perumusan strategi menggunakan analisis SWOT, diperoleh strategi SO berupa meningkatkan peran kelembagaan perikanan dan sumber daya manusia, meningkatkan dukungan stakeholder, fasilitasi sarpras, penumbuhan kelompok, meningkatkan kunjungan wisata, dan meningkatkan sumber daya lingkungan.

INTERPRETASI ANALISIS AMMI DENGAN BIPLOT (Kasus Analisis Interaksi Genotip Tanaman Padi dengan Lingkungan pada Percobaan Lokasi Ganda): Universitas Terbuka Endang Wahyuningrum
Jurnal Matematika Sains dan Teknologi Vol. 4 No. 2 (2003)
Publisher : LPPM Universitas Terbuka

Multilocationtrials play an important role in agronomic research. Theseare often used to analyse the adaptability of genotypes indifferent environments. Multilocation trials also are usedto find out which environment is the best location to adaptfor each genotype that is the highest yielding in the environmentand to determine the pattern of response of genotypes acrossenvironments. ANOVA is used to compute genotype and environmentadditive effects. However, it cannot be used to analyse agenotype-environmental interaction. Principle component analysis(PCA) is only used to analyse non additive interaction effects.The statistical analysis recommended here combines the Anovawith PCA that is Additive Main effects and MultiplicativeInteraction (AMMI) with PCA. It begins with the usual analysisof variance to compute genotype and environment additive effects,and then applies PCA to analyse non additive interaction effects.The results of AMMI analysis is presented graphically in theform of biplots. The use of these procedure is exemplifiedusing secondary data set of the mean yield of padi from TheCenter of Indonesian Padi Research in Sukamandi.

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