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Jurnal Matematika Sains dan Teknologi
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.
Arjuna Subject : -
Articles 403 Documents
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HAMBATAN KOMUNIKASI YANG DIRASAKAN PETANI SELAMA PEMBINAAN PETANI PADI (ORIZA SATIVA) DI DESA OESAO KABUPATEN KUPANG Bulkis, Bulkis
Jurnal Matematika Sains dan Teknologi Vol 19 No 1 (2018)
Publisher : LPPM Universitas Terbuka

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Abstract

The objective of the research was to describe the factor of individual characteristic and communication activity, the communication barriers of rice farmers the analysing the relation between the factor of farmers individual characteristic and the communication barriers that felt by rice farmer in theOesao villageKupang district. Quantitative approach was chosen by the researcher because of the descriptions the explained the relation among variables in depth by the unit of analysis was rice farmer so that it can be show the clear relation between variables. There were two variables of research that observed, they were characteristic of farmer (X1), farmer communication activity (X2), communication barrier between agricultural extension and farmer (Y). The result of the research showed that 1) communication barriers most felt by the farmers were caringand solidarityfactor, then prejudice factor, difference of expectation and difference of needs.2) the experience of farmer was very significantly related with prejudice factor barrier, cared, solidarity then has significantly related with communication barrier of difference of needs. 3) Characteristic of farmer cosmopolite has significantly related negative with barriers factor of communication at prejudice, difference of needs, cared, and solidarity. Characteristic of the extent of farmer knowledge has significantly related negative with all of barriers factor of communication that felt by the rice farmer at Oesao villageKupang district. Communication activity was generally significant and very real with barriers of communication that felt by rice farmer at Oesao Kab. Kupang. Penelitian ini bertujuan untuk mendeskripsikan faktor karakteristik individu dan aktivitas komunikasi, hambatan-hambatan komunikasi yang ada pada petani padiserta menganalisis hubungan antara faktor karakteristik individu petani dan aktivitas komunikasi dengan hambatan komunikasi yang dirasakan petani padi di Desa Oesao Kab. Kupang. Pendekatan kuantitatif dipilih oleh peneliti karena melihat deskripsi serta menjelaskan hubungan antar variabel secara mendalam, dengan unit analisis adalah petani tanaman padi sehingga dapat memperlihatkan hubungan yang jelas antar variabel. Terdapat dua variabel penelitian yang diamati yaitu karakteristik petani (X1), aktivitas komunikasi petani(X2), hambatan komunikasi antara penyuluh dan petani(Y). Hasil penelitian yang diperoleh bahwa:1) Hambatan komunikasi yang paling dirasakan petani adalah pada faktor perhatian dan keakraban, disusul dengan faktor prasangka, perbedaan harapan dan perbedaan kebutuhan. 2) Pengalaman petani berhubungan sangat nyata pada faktor hambatan prasangka, perhatian dan keakraban serta berhubungan nyata dengan hambatan komunikasi faktor perbedaan kebutuhan. 3) Karakteristik kekosmopolitan petani berhubungan sangat nyata negatif dengan faktor hambatan‐hambatan komunikasi pada prasangka, perbedaan kebutuhan, perhatian dan keakraban. Karakteristik tingkat pengetahuan petani berhubungan sangat nyata negatif dengan seluruh faktor hambatan‐hambatan komunikasi yang dirasakan petani padi di Desa Oesao Kab. Kupang. Aktivitas komunikasi secara umum berhubungan nyata dan sangat nyata dengan hambatan‐hambatan komunikasi yang dirasakan petani padi di Desa Oesao Kab. Kupang.
POLA PENGAMBILAN KEPUTUSAN WANITA TANI PADA USAHATANI SAYURAN SENTRA SAYURAN DATARAN TINGGI Yani, Diarsi Eka; Pertiwi, Pepi Rospina
Jurnal Matematika Sains dan Teknologi Vol 13 No 2 (2012)
Publisher : LPPM Universitas Terbuka

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This article aims to determine (1) internal and external characteristics associated with decision-making patterns of women farmers in vegetable farming, (2) decision-making patterns of women farmers in vegetable farming, and (3) the relationship between internal and external characteristics of women farmers in decision-making patterns. Data collected by survey methods. Respondents were all members of the group of women vegetables farmers in the village of Mekarbakti, Pangalengan District, Bandung Regency. Data analysis was performed by using descriptive and inferential Spearman Rank correlation test at 5% level of confidence. The results showed that internal characteristics associated with decision-making patterns of women farmers are age, while the external characteristics associated with decision making patterns of women farmers are farming infrastructure. Decision-making in the activities of tillage, fertilizing, pest and disease control, and marketing, were fully performed by the husband. While determining of businesses activities and purchases of farm fascilities were a joint decision between husband and wife, although the husband was more dominant. Activities in seed selecting, planting, replanting, and harvest timing, decision making were done equally between husband and wife. Artikel ini bertujuan untuk menentukan (1) karakteristik internal dan eksternal yang berhubungan dengan pola pengambilan keputusan wanita tani pada usahatani sayuran, (2) pola pengambilan keputusan wanita tani dalam usahatani sayuran, dan (3) hubungan antara karakteristik internal dan eksternal wanita tani dengan pola pengambilan keputusannya. Data dikumpulkan dengan metode survei. Responden adalah seluruh anggota kelompok wanita tani sayuran di Desa Mekarbakti, Kecamatan Pangalengan, Kabupaten Bandung. Analisis data dilakukan secara deskriptif dan inferensial menggunakan uji korelasi Rank Spearman pada taraf kepercayaan 5%. Hasil penelitian menunjukkan bahwa karakteristik internal yang berhubungan dengan pola pengambilan keputusan wanita tani adalah umur, sedangkan karakteristik eksternal yang berhubungan dengan pola pengambilan keputusan wanita tani adalah prasarana usahatani. Pengambilan keputusan untuk kegiatan pengolahan tanah, pemupukan, pengendalian hama penyakit, dan pemasaran, sepenuhnya dilakukan oleh suami. Sedangkan kegiatan penentuan bisnis usahatani dan pembelian saprodi, merupakan keputusan bersama antara suami dan istri, tetapi suami lebih dominan. Adapun kegiatan pemilihan benih, penanaman, penyulaman, dan penetapan waktu panen, pengambilan keputusan dilakukan setara antara suami dan istri.
PENGARUH LAJU PENUMPUKAN DAN KELEMBABAN FESES BURUNG WALET (Aerodramus Fuciphagus) PADA PERUBAHAN WARNA SARANG WALET Dwi Iriyani; Sunu Kuntjoro
Jurnal Matematika Sains dan Teknologi Vol. 13 No. 1 (2012)
Publisher : LPPM Universitas Terbuka

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Abstract

Saat ini belum banyak diketahui faktor penyebab pembentukan warna merah pada sarang burung walet, dan bagaimana teknik pembentukan warna merah pada sarang burung walet tersebut. Diduga penumpukan feses mempengaruhi perubahan warna pada sarang. Penelitian ini bertujuan mengukur banyaknya feses yang dihasilkan burung walet dalam satu periode pembentukan sarang, mengobservasi pengaruh jumlah dan kelembaban feses terhadap pembentukan warna merah pada sarang. Penelitian eksploratif ini dilaksanakan di Laboratorium Penelitian dan Laboratorium Instrumen Jurusan Kimia FMIPA UNESA dan di rumah burung walet Sidayu Gresik selama 18 minggu (Nopember 2009-Maret 2010). Hasil penelitian menunjukkan feses burung walet pada awal pembentukan sarang menunjukkan jumlah yang sangat sedikit 2,16±0,90 g/minggu (minggu ke-4) dan sarang walet masih menunjukkan warna putih. Sedangkan warna merah terbentuk pada pada minggu ke-14 dengan jumlah feses walet 41,85±4,48 g/minggu. Hasil uji laboratorium menunjukkan bahwa dengan feses walet 250 gr dan kelembaban 80% terjadi perubahan warna sarang merah pada hari ke-11. Pembentukan warna merah sarang burung walet terjadi secara bertahap dengan peningkatan jumlah feses. Kesimpulan penelitian ini adalah keberadaan feses dan kelembaban feses walet menjadi faktor penentu dalam pembentukan warna merah pada sarang burung walet. Edible swallow’s nests with red color are rare and preferred by its consumers. Besides factors affecting the coloration of the birds’ nests are not well-known. It issuspected that the amount of bird’s fecal influence the nest color. Therefore, the aim of this research are to prove that swallow’s fecal can influence the establishment of red color in swallow’s nest; to measure the amount of fecal matter produced in a single swallow bird nest formation period; and to observe the effect of the amount of feces and humidity on the formation of red color of the nest. Explorative research was done at the Instrument Laboratory of Chemistry Department in FMIPA UNESA and Gresik Sidayu swiftlet house for 18 weeks (November 2010 to March 2011). The results showed that fecal in the early formation was light (2.16 ± 0.90 g / week at 4th week) and swallow’s nest color was white. The red color was formed on the 14th week with larger amount of fecal (41.85 ± 4.48 g / week). Laboratory test results showed that the 250 gr swallow fecal at 80% humidity has changed the nest color to be red on the 11th day. It can be concluded that the formation of the red color of the bird's nest happens gradually in line with increasing number of bird’s fecal. Meanwhile, humidity of fecal was also influenced the coloration process.
PENGARUH PERUBAHAN IKLIM TERHADAP PERILAKU PETANI TEMBAKAU DI KABUPATEN JEMBER Herminingsih, Hesti; Rokhani, Rokhani
Jurnal Matematika Sains dan Teknologi Vol 15 No 1 (2014)
Publisher : LPPM Universitas Terbuka

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Penelitian ini dilatabelakangi oleh fakta bahwa perubahan iklim yang melanda Indonesia akhir-akhir ini banyak memberikan pengaruh kepada usahatani. Kabupaten Jember yang merupakan sentra tanaman tembakau juga merasakan dampak dari perubahan iklim. Penelitian ini bertujuan untuk mengkaji faktor-faktor yang mempengaruhi perilaku petani terhadap risiko perubahan iklim dalam pengembangan usahatani tembakau di Kabupaten Jember. Metode penelitian yang digunakan adalah metode deskriptif dan analisis regresi linear berganda. Lokasi penelitian di Kecamatan Pakusari dan Kecamatan Ambulu. Metode pengambilan sampel menggunakan simple random sampling sejumlah 40 orang responden. Faktor-faktor yang diduga berpengaruh terhadap perilaku petani adalah umur, pendidikan formal, pendidikan nonformal, pengalaman, jumlah anggota keluarga, luas lahan, rasio harga, frekuensi kegagalan panen, dan jenis lahan. Hasil penelitian menunjukkan bahwa faktor-faktor yang berpengaruh nyata terhadap perilaku petani adalah umur, pendidikan formal dan pengalaman dengan signifikansi berturut-berturut 0,048; 0,015 dan 0,011. Faktor pendidikan nonformal, jumlah anggota keluarga, luas lahan, rasio harga, frekuensi kegagalan panen, dan jenis lahan tidak berpengaruh signifikan.
PENGARUH PENAMBAHAN EFFECTIVE MICROORGANISM-4 (EM-4) PADA PENGOMPOSAN TERHADAP PRODUKSI JAMUR MERANG Yuliastrin, Adisti
Jurnal Matematika Sains dan Teknologi Vol 8 No 2 (2007)
Publisher : LPPM Universitas Terbuka

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This research was aimed for knowing the influence of  EM-4 (effective microorganism-4) addition and the most effective concentration of EM-4 in compost media for straw mushroom (Volvariella volvacea (Bull. ex Fr.) Sing) production. The treatment examined the use of EM-4 solution divided into six treatments and four repetitions. EM-4 concentration from 0 ml/l – 12,5 ml/l with an interval increasing of 2,5 ml/l. The addition of 7,5 ml/l – 12,5 ml/l concentration of EM-4 did not give so different result with the control media. Composting with addition of 5 ml/l EM-4 gave the highest straw mushroom production (2272,25 g). Statistically the result showed that the concentrations of EM-4 had no significant effect on the mushroom production.
Solusi Persamaan Schrödinger Osilator Harmonik dalam Ruang Momentum Pandiangan, Paken
Jurnal Matematika Sains dan Teknologi Vol 6 No 1 (2005)
Publisher : LPPM Universitas Terbuka

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The solution of Schrödinger equation for the simple harmonic oscillator has been investigated and explored. The solutions are coordinate representation or momentum representation. The eigen energy is .  The expectation value is  respectively. Both Method will produce similar result.
PENDUGAAN POTENSI SUMBERDAYA PERIKANAN LAUT DAN TINGKAT KERAGAAN EKONOMI PENANGKAPAN IKAN (KASUS DI TPI SENDANG BIRU KABUPATEN MALANG) Hulaifi Hulaifi
Jurnal Matematika Sains dan Teknologi Vol. 12 No. 2 (2011)
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33830/jmst.v12i2.554.2011

Abstract

The Increased fishing intensity will provide positive and negative impacts. Positive impact is an increase in production that can provide benefits, while the negative impact is eventually decline in production catches. The purpose of this research is potential of Estimating Maximum Sustainable Yield (MSY) in Malang Regency could still be maintained. MSY at the level of Maximum Economic Yield (MEY). Optimization of fishing effort and analysis economic eligibility fishing effort. The method of research using the survey method, Analysis of the data used is static Bio-economic model, and Gorden-Schaefer model. While the research results obtained MEY value of 5,789,952. kg/year and the actual conditions, a production of 5,221,781 kg/year and MSY of 5,829,206 kg/year, the rate of 90% utilization optimization, and optimal fishing levels have exceeded MSY. The advantage of fishermen in biology and economics as much as 5,789,952 kg/year. Conclusion The results showed that the water condition in Malang Regency was not economically efficient, because already there is excess fishing effort. Optimization needs to be done by limiting fishing effort, intensified fishing activities in deeper waters.
KOMPUTASI DISTRIBUSI NEUTRON DALAM STATISTIK MAXWELL BOLTZMANN Purwoningsih, Tuti
Jurnal Matematika Sains dan Teknologi Vol 13 No 1 (2012)
Publisher : LPPM Universitas Terbuka

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The migration of neutron is arranged by some probability distributions such as probability of spread distribution, probability of distance distribution, probability of energy distribution and probability of flux distribution. One application of these pattern distributions is modelling the reaction between neutron and elements which compose the tissue related to the absorption of neutron in brain cancer tissues. This article explores computation analysis of pattern of distribution of neutron flux in a reactor system. Variables were the amount of neutron simulated and the depth of cylindrical reactor system. Simulations showed that 20-120 minutes was needed in executing 100,000 neutrons to build the distribution pattern of neutrons flux. This pattern was also depended on the depth of the system. In all depths, the peak of neutron flux distribution pattern was in the 3rd bin. Comparison between this simulations and experiment results in literatures showed that by analyzing the simulation of the distribution of neutron flux, a Poisson distribution which follows the Maxwell-Boltzmann was resulted. Perpindahan neutron diatur dengan beberapa peluang distribusi, seperti peluang distribusi sudut hamburan, peluang distribusi jarak perpindahan, peluang distribusi energi transfer, serta peluang distribusi fluks neutron. Salah satu aplikasi dari pola distribusi ini adalah pemodelan reaksi antara neutron dengan elemen-elemen penyusun jaringan yang terkait dengan serapan neutron dan dosis yang terserap oleh jaringan tumor otak pada terapi BNCT (Boron Neutron Capture Therapy). Dalam penelitian ini dibahas analisis komputasi tentang pola distribusi fluks neutron dalam suatu sistem reaktor. Variabel dalam penelitian ini adalah banyaknya neutron yang disimulasikan, serta kedalaman sistem reaktor yang dalam penelitian ini menggunakan sistem reaktor berbentuk silinder. Hasil simulasi menunjukkan bahwa dengan neutron sebanyak 100.000 diperlukan waktu eksekusi sekitar 20 120 menit untuk menghasilkan pola distribusi fluks neutron yang bergantung pada kedalaman sistem yang digunakan. Untuk semua kedalaman, puncak pola distribusi fluks neutron berada pada bin ke tiga. Dari perbandingan antara hasil simulasi dengan eksperimen dari literatur, dapat disimpulkan bahwa melalui analisis simulasi untuk distribusi fluks neutron diperoleh suatu distribusi Poisson yang mengikuti statistik Maxwell-Boltzmann.
PENGEMBANGAN SEA FARMING BUDIDAYA KERAMBA JARING APUNG (KJA) KERAPU (EPHINEPHELUS SP.) DI INDONESIA Gunarto, Anton
Jurnal Matematika Sains dan Teknologi Vol 4 No 1 (2003)
Publisher : LPPM Universitas Terbuka

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Seafarming is an activity of culturing marine organisms, which encompasses broodstock selection, spawning, hatchery, juvenile culture, and mature stages. At the last stage, the fish, once resist to diseases and weather fluctuation, is released to water bodies for restocking purposes. Through restocking, fisherman's cathces are expected to increase in a sustainable manner. One of the technology that can be used for seafarming is grouper cage culture. This technology is quite productive and intensive, with net cages construction are anchored to float at coastal waters. Cage culture of grouper has a good prospective in Indonesia as the fish is highly valued in international market. Furthermore, Indonesia has very high potential coastal waters for grouper cage culture expansion
PEMANFAATAN SEREH (Cymbopogon Cytratus) DALAM MENURUNKAN BAU PADA PUPUK ORGANIK CAIR DAN POTENSINYA DALAM MENINGKATKAN PRODUKSI TANAMAN CABAI (Capsicum Annum) Nurhasanah Nurhasanah
Jurnal Matematika Sains dan Teknologi Vol. 14 No. 1 (2013)
Publisher : LPPM Universitas Terbuka

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Research in the use of lemongrass (Cymbopogon citratus) to reduce odors in liquid organic fertilizer has been conducted in Bogor for 6 months. This study begin with a liquid organic fertilizer produced from 1 kg of shrimp waste, 1 kg of maize, 1 kg of bean sprouts, 10 liters of coconut water, 500 ml of EM4 and 500 g of sugar through fermentation process for 6 weeks. Then the result of liquid organic fertilizer was added by an ingredient lemongrass as deodorizing with doses of 0, 10%, 20% and 30% (w/v). After that it is fermented for 2 weeks. The next stage was the application of liquid organic fertilizer as a foliar fertilizer at chillies (Capsicum annum) planting using a completely randomized design (CRD) 1 factors type of using liquid organic fertilizer (control, liquid organic fertilizer without lemongrass, liquid organic fertilizer + 10% lemongrass, liquid organic fertilizer + 20% lemongrass and liquid organic fertilizer + 30% lemongrass) respectively at doses of 0, 6, 12 and 18 ppm. The parameters measured were odor (NH3 and H2S), levels of macro nutrients (N, P, K, Ca, Mg, and S) and micro nutrients (Cu, Zn, Mn, and Fe) after fermenting process, and the production of crops (fruit number and fruit weight) after planting. Research results show that the higher dose of lemongrass added cause levels of odor (NH3 and H2S) in the liquid organic fertilizer decreased and content of macro nutrients, micro nutrients, and phytohormones increased. The planting results indicate liquid organic fertilizer which added 20% lemongrass in a dose of 12 ppm was the optimal dose in increasing crop production. Penelitian penggunaan sereh (Cymbopogon citratus) dalam menurunkan bau pada pupuk organik cair telah dilakukan di Bogor selama 6 bulan. Penelitian ini diawali dengan membuat pupuk organik cair yang dihasilkan dari 1 kg limbah udang, 1 kg jagung, 1 kg touge, 10 Liter air kelapa, 500 ml EM4 dan 500 g gula pasir melalui proses fermentasi selama 6 minggu. Kemudian pada pupuk organik cair yang dihasilkan ditambahkan sereh sebagai bahan penghilang bau dengan dosis 0, 10%, 20% dan 30% (w/v). Setelah itu didiamkan selama 2 minggu. Tahapan berikutnya merupakan pengaplikasian pupuk organik cair tersebut sebagai pupuk daun pada pertanaman cabai (Capsicum annum) dengan menggunakan Rancangan Acak Lengkap (RAL) 1 faktor jenis pupuk organik cair yang digunakan (kontrol, pupuk organik cair tanpa sereh, pupuk organik cair + 10% sereh, pupuk organik cair + 20% sereh dan pupuk organik cair + 30% sereh) masing-masing pada dosis 0, 6, 12 dan 18 ppm. Parameter yang diukur adalah parameter kebauan (NH3 dan H2S), kadar hara makro (N, P, K, Ca, Mg, dan S) dan kadar hara mikro (Cu, Zn, Mn, dan Fe) setelah proses pemeraman, dan produksi tanaman (jumlah buah dan bobot buah) setelah pertanaman. Hasil penelitian menunjukkan bahwa semakin tinggi dosis sereh yang ditambahkan menyebabkan kadar gas penyebab bau (NH3 dan H2S) pada pupuk organik cair makin berkurang dan kadar hara makro, hara mikro maupun fitohormon makin meningkat. Hasil pertanaman menunjukkan pemberian pupuk organik cair yang ditambahkan 20% sereh pada dosis 12 ppm merupakan dosis paling optimal dalam meningkatkan produksi tanaman.

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