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INDONESIA
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 396 Documents
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PEMBUATAN CRACKERS DENGAN PENAMBAHAN TEPUNG IKAN LEMURU (SARDINELLA LONGICEPS) Artama, Trimurti
Jurnal Matematika Sains dan Teknologi Vol 4 No 1 (2003)
Publisher : LPPM Universitas Terbuka

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Abstract

This research was done in order to diversify and to increase nutrition value of food product especially to enrich nutrition of fisheries product. Fish flour was made from Sardinella longiceps and wheat flour was used as materials to make crackers. The fish and wheat flour in the ratio of (0:100; 10:90; 20:80 and 30:70) were tested to get the best quality of crackers. Sensory quality, proximate analysis and texture test were applied in all products. The protein quality (chemical score) and calcium contents of the best crackers were 89.60 (limited amino acid : methionine) and 550 mg/100 g, respectively.The result of this research showed that the 20% fish flour-added crackers product had the highest rate of sensory quality (color, taste, smell, performance, and texture). It was accepted well by the panelists, and it also increased the protein quality and the calsium content.
IDENTIFIKASI GEN ENTEROTOKSIN DAN EXFOLIATIF ISOLAT Staphylococcus aureus ASAL SUSU SAPI PERAH DAN SUSU KAMBING DARI BOGOR Prasetyo, Budi
Jurnal Matematika Sains dan Teknologi Vol 16 No 2 (2015)
Publisher : LPPM Universitas Terbuka

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Abstract

In humans, Staphylococcus aureus is an important pathogen as the cause of many cases of diseases such as food poisoning, skin infections, endocarditis, pneumonia, osteomyelitis, septic arthritis, and enshefalitis. The experiment was conducted at  the Laboratory Biotrop SEAMEO, Bogor aims to detect enterotoxin and exfoliative genes from Staphylococcus aureus isolates origin dairy cow milk and goat milk from the village of Cijeruk, Bogor. Research methods include preparation of DNA, 23S rRNA gene amplification, enterotoxin gene amplification and exfoliative gene amplification. Results of enterotoxin gene amplification (sea, seb) and exfoliative gene amplification (eta) against 2 isolates of S. aureus showed positive results, but negative for the exfoliative gene (etb). A positive result was indicated by the appearance of DNA fragments that have a specific length (121 bp sea, seb 477 bp, and 119 bp eta) according to the PCR products of reference and GeneBank database. It is concluded that the gene has been detected enterotoxin (sea, seb) and exfoliative (eta) on isolates of S. aureus origin dairy cow milk and goat milk from the village of Cijeruk, Bogor. Pada manusia, Staphylococcus aureus merupakan patogen penting sebagai penyebab timbulnya berbagai kasus penyakit seperti keracunan makanan, infeksi kulit, endokarditis, pneumonia, osteomielitis, sepsis artritis, dan enshefalitis. Penelitian dilaksanakan di Laboratorium Seameo Biotrop, Bogor bertujuan mendeteksi gen enterotoksin dan exfoliatif isolat Staphylococcus aureus asal susu sapi perah dan susu kambing dari Desa Cijeruk, Bogor. Metode penelitian meliputi preparasi DNA, amplifikasi gen 23S rRNA, amplifikasi gen enterotoksin dan exfoliatif. Hasil amplifikasi gen enterotoksin (sea, seb) dan exfoliatif (eta) terhadap 2 isolat S. aureus menunjukkan hasil positif, tetapi negatif terhadap gen exfoliatif (etb). Hasil positif tersebut ditandai dengan munculnya fragmen DNA yang memiliki panjang spesifik (sea 121 bp, seb 477 bp, dan eta 119 bp) sesuai dengan produk PCR dari referensi dan database GeneBank.  Disimpulkan bahwa telah dideteksi  gen enterotoksin (sea, seb) dan exfoliatif (eta) pada isolat S. aureus asal susu sapi perah dan susu kambing dari Desa Cijeruk, Bogor.
Peranan Auksin dalam Usaha Menekan Kelayuan Buah Muda Kakao (Theobroma Kakao L.) Pangaribuan, Nurmala
Jurnal Matematika Sains dan Teknologi Vol 5 No 1 (2004)
Publisher : LPPM Universitas Terbuka

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Abstract

In the cocoa tree, the genes for producing an abscission zone are in pedicles. The process is hormonally driven by ethylene whilst auxins apparently decrease the sensitivity to ethylene. When the level of auxin declones, a special layer of cells (the abscission layer) is formed at the base of petiole or fruit stalk. Ethylene stimulates the production of enzimes that degrade the middle lamella beetween cells in the abscission zone. The concept development so far is correct that should be possible to delay abscission by aplication of sinthetic auxins. Aplication of compound enhance levels of auxins or decrease absicic acid and /or ethylene. Such conditions may inhibit young fruit abscission and promote fruit development.
PERAN SERTA MASYARAKAT PEMANFAAT PESISIR DALAM PENGELOLAAN WILAYAH PESISIR TELUK AMBON DALAM Hiariey, Lilian Sarah; Romeon, Nesti Rostini
Jurnal Matematika Sains dan Teknologi Vol 14 No 1 (2013)
Publisher : LPPM Universitas Terbuka

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Abstract

Inner Ambon Bay (TAD) is a coastal region where there are a variety of beneficiary activities such as fisheries, industry, ports, and market. Complexity of activities are forcing the degradation and pollution of coastal. The study was conducted to analyze the level of public participation interest towards the utilization of coastal activities and the factors that differentiate the level of community participation so that the concept of utilizing coastal community participation model in coastal area management is known. These conditions encourage the need for community participation in coastal area management. The population is the people who live in the areas that utilize coastal TAD regularly for any activity or business. The samples are individuals who become actors, involved, contribute directly to the activities in coastal areas TAD. The sampling method is proportional. Analysis conducted in this study is the analysis of the respondents to determine the level of public participation interest towards the utilization of coastal activities by using descriptive analysis, analysis of the factors that differentiate the level of community participation by using discriminant analysis, and analysis of coastal area management strategies by identifying the factors of strengths, weaknesses, opportunities and threats (SWOT) in the coastal area of TAD. The results showed that the utilization in the coastal of TAD having a high level of interest shown by the level of the effect of utilization of the economic activities of society, but the impact on coastal resources due to unsustainable use activities that pose a serious. The level of participation of beneficiary communities in the coastal area management is low that can be indicated by the involvement of community in the implementation and monitoring phase. The factors that differentiate the level of participation of coastal communities are the beneficiaries of education, perception, and revenues received, while the age factor does not play a significant role in distinguishing the level of public participation. Strategy is obtained by using the concept of co-management in which the public has sufficient authority in the management and accomandabed of the interests of the community in the management process. Wilayah Teluk Ambon Dalam (TAD) merupakan wilayah pesisir dengan berbagai kegiatan seperti perikanan, industri, pelabuhan, dan ekonomi (pasar). Kompleksitas kegiatan pemanfaatan pesisir mendorong terjadinya degradasi kerusakan dan pencemaran pesisir. Kondisi ini mendorong perlunya peran serta masyarakat dalam pengelolaan wilayah pesisir. Penelitian dilakukan untuk menganalisa tingkat kepentingan masyarakat terhadap kegiatan pemanfaatan pesisir dan faktor-faktor yang membedakan tingkat peran serta masyarakat sehingga diketahui konsep model peran serta masyarakat pemanfaat pesisir dalam pengelolaan wilayah pesisir. Populasi penelitian adalah masyarakat yang tinggal di kawasan TAD yang memanfaatkan lahan pesisir secara teratur untuk kegiatan atau usahanya. Sampel yaitu individu yang menjadi pelaku, terlibat dan berperan secara langsung dalam kegiatan pemanfaatan di wilayah pesisir TAD. Penentuan sampel dengan cara proporsional. Analisis yang dilakukan dalam penelitian adalah analisis responden, untuk mengetahui tingkat kepentingan masyarakat terhadap kegiatan pemanfaatan pesisir dengan menggunakan analisis deskriptif, analisis faktor-faktor yang membedakan tingkat peran serta masyarakat dengan menggunakan analisis diskriminan, dan analisis strategi pengelolaan wilayah pesisir dengan mengidentifikasi faktor-faktor kekuatan, kelemahan, peluang, dan ancaman (SWOT) pada wilayah pesisir TAD. Hasil penelitian menunjukkan bahwa kegiatan pemanfaatan di pesisir TAD memiliki tingkat kepentingan yang tinggi yang ditunjukkan dengan besarnya pengaruh kegiatan pemanfaatan terhadap aktivitas ekonomi masyarakat. Dampak terhadap sumber daya pesisir akibat kegiatan pemanfaatan yang tidak berkelanjutan menjadi ancaman yang serius, sedangkan tingkat peran serta masyarakat pemanfaat pesisir dalam pengelolaan wilayah pesisir rendah, yang ditunjukkan dengan keterlibatan masyarakat pada tahap implementasi dan pemantauan. Faktor-faktor yang membedakan kelompok tingkat peran serta masyarakat pemanfaat pesisir adalah pendidikan, persepsi, dan pendapatan, sedangkan faktor umur tidak berperan signifikan dalam membedakan kelompok tingkat peran serta masyarakat. Strategi yang diperoleh yaitu menggunakan konsep pengelolaan wilayah pesisir berbasis masyarakat (co-management) dimana masyarakat memiliki kewenangan cukup dalam pengelolaan dan terakomodasinya kepentingan masyarakat dalam proses pengelolaan.  
PENDUGAAN UMUR SIMPAN MI KERING DARI TEPUNG KOMPOSIT TERIGU, KELADI, DAN UBI JALAR Elisabeth, Dian Adi Anggraeni; Setijorini, Ludivica Endang
Jurnal Matematika Sains dan Teknologi Vol 17 No 1 (2016)
Publisher : LPPM Universitas Terbuka

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This research aimed to investigate theshelf-life of wheat, taro, and sweet potato composite flours-based dried noodles produced by a women-farming group called“Mekar Sari” in thePelaga village, Badung District, Bali. The research was conducted fromMay until November 2014. The research onthe shelf-life wasbased on the water content changing patternsby usinga completely randomized design with four treatments of thickness of PE plastic, i.e. (a) P1=0,30 mm; (b) P2=0,32 mm; and (c) P3=0,35 mm; and (d) P4=0,40 mm. The identification of shelf-life adoptedthe acceleration method (ASLT = Accelerated Shelf Life Testing)together with the Arrhenius approach. The products were stored in various storage temperatures, i.e.,20oC, 30oC (room temperature) as a control, and40oC. The results showed that PE plastic 0,35 mm was suitable for dried noodle packaging. In room temperature, shelf-life of the dried noodle was about 46 weeks.  Penelitian ini bertujuan untuk mengetahui umur simpan mi kering dari tepung komposit terigu, keladi, dan ubijalar. Produk mi kering dihasilkan oleh kelompok wanita tani (KWT) Mekar Sari di Desa Pelaga, Kabupaten Badung, Bali. Penelitian dilaksanakan pada bulan Mei sampai November 2014. Penentuan umur simpan produk mi kering berdasarkan pola perubahan kadar air menggunakan rancangan acak lengkap dengan 4 (empat) perlakuan ketebalan plastik polietilen (PE), yaitu: (a) P1=0,30 mm; (b) P2=0,32 mm; dan (c) P3=0,35 mm; dan (d) P4=0,40 mm. Penentuan umur simpan menggunakan metode ASLT (Accelerated Shelf Life Testing) dengan pendekatan Arrhenius. Produk mi kering disimpan pada berbagai suhu penyimpanan, yaitu 20oC, 30oC (suhu ruang) sebagai kontrol, dan 40oC. Hasil menunjukkan bahwa pengemasan dalam plastik PE 0,35 mm lebih sesuai untuk penyimpanan mi kering. Pada suhu ruang, umur simpan mi kering dapat mencapai sekitar 46 minggu.  
PROFIL VEGETASI PEKARANGAN DI DESA JABON MEKAR, KECAMATAN PARUNG, BOGOR Prasetyo, Budi
Jurnal Matematika Sains dan Teknologi Vol 8 No 1 (2007)
Publisher : LPPM Universitas Terbuka

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Jabon Mekar village is well-known by people as the central of fruit producing at subdistrict of Parung. However it was estimated as a buffer zone of Jakarta and subject of the urban development. The aim of the research is to study the vegetation profile and the tree of model architecture at home-garden of community in the village of Jabon Mekar. The methods used for vegetation analysis were the quadrate method and the vegetation profile architecture method. The result of the vegetation profile at home-garden research shows that according to their formation of canopy coat, there were five stratums. Based on the vertical and horizontal of profile diagram, the dominant species of plants is Gnetum gnemon, with Fagerlind model of architecture; and the co-dominant species of plants is Musa sp., with Tomlinson model of architecture. The domination of these two trees of architecture models will give a limited chance of having an erotion process at the home-garden society.   
PERBANDINGAN AKURASI ENSEMBLE ARIMA DALAM PERAMALAN CURAH HUJAN DI KOTA BATU, MALANG, JAWA TIMUR Faulina, Ria
Jurnal Matematika Sains dan Teknologi Vol 15 No 2 (2014)
Publisher : LPPM Universitas Terbuka

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Di Indonesia, perubahan pola iklim sangat mempengaruhi produksi pertanian. Salah satu upaya untuk mengatasi dampak perubahan iklim dalam pertanian saat ini adalah melalui pendekatan taktis dengan pengembangan metode dalam pemodelan dan peramalan. Dalam studi ini digunakan metode ARIMA sebagai model individu dan ensemble ARIMA sebagai model kombinasi untuk meramalkan rata-rata curah hujan dasaharian di enam stasiun Kota Batu, Malang, Jawa Timur. Keakuratan model dalam prediksi diukur berdasarkan kriteria RMSE dimana model terbaik yang dipilih adalah model dengan RMSE terkecil. Model ARIMA pada enam stasiun curah hujan menunjukkan akurasi yang lebih baik untuk 54 periode ke depan dibandingkan dengan model Ensemble ARIMA.
PENGARUH PADAT TEBAR TERHADAP KANDUNGAN ZAT GIZI IKAN LELE YANG DIPELIHARA DENGAN TEKNOLOGI BIOFLOK Anang Suhardianto; Ariyanti Hartari
Jurnal Matematika Sains dan Teknologi Vol. 20 No. 2 (2019)
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33830/jmst.v20i2.196.2019

Abstract

This study aims to determine the effect of stocking density on the nutrient content of catfish that is cared with biofloc technology. Nutrients observed: 1) water content, 2) protein, 3) carbohydrates, 4) total fat, 5) saturated fatty acids / SFA, 6) monounsaturated fatty acids/ MUFA, 7) plural unsaturated fatty acids / PUFA , 8) omega-3, 9) omega-6, and 10) omega 9. Statistical tests on the 10 variables showed that stocking density did not have a significant effect on the 10 variables at a 5% confidence interval. Stocking density of treatment is 1000 heads/pond (T1), 2000 heads/pond (T2), 3000 heads/pond (T3), with a pond size of 2.0 m x height 1.0 m. Research results: 1. The average water content is 69.40–71.47% and the highest T3. 2. The protein content is 14.70-15.90%, the highest T2. 3. Carbohydrate content of 5.16-5.50%, the highest T2. 4. The average total fat content of 6.73-7.78%, the highest T1. 5. SFA content is around 43%, PUFA around 23%, and MUFA around 32%. 6. The highest omega-3 content is T3, then T1, and T2. Omega-6 and 9 sequence contents are T1, T2, and T3. It was concluded, the treatment of biofloc catfish stocking densities at a 5% confidence interval did not have a significant effect on the specified nutrient content. Penelitian ini bertujuan untuk menentukan pengaruh padat tebar terhadap kandungan zat gizi ikan lele yang dipelihara dengan teknologi bioflok. Zat gizi yang diamati: 1) kandungan air, 2) protein, 3) karbohidrat, 4) lemak total, 5) asam lemak jenuh/SFA, 6) asam lemak tak jenuh tunggal/MUFA, 7) asam lemak tak jenuh jamak/PUFA, 8) omega-3, 9) omega 6, dan 10) omega 9. Uji statistik terhadap ke-10 variabel menunjukkan padat tebar tidak memberikan pengaruh nyata terhadap ke-10 variabel pada selang kepercayaan 5%. Padat tebar perlakuan adalah 1000 ekor/kolam (T1), 2000 ekor/kolam (T2), 3000 ekor/kolam (T3), dengan ukuran kolam diameter 2,0 m x tinggi 1,0 m. Hasil penelitian: 1. Rata-rata kandungan air 69,40–71,47% dan T3 tertinggi. 2. Kandungan protein 14,70–15,90%, T2 tertinggi. 3. Kandungan karbohidrat 5,16–5,50%, T2 tertinggi. 4. Rata-rata kandungan lemak total 6,73–7,98%, T1 tertinggi. 5. Kandungan SFA sekitar 43%, PUFA sekitar 23%, dan MUFA sekitar 32%. 6. Kandungan omega-3 tertinggi T3, kemudian T1, dan T2. Omega-6 dan 9 urutan kandungannya T1, T2, dan T3. Disimpulkan, perlakuan padat tebar lele bioflok pada selang kepercayaan 5% tidak memberikan pengaruh yang nyata terhadap kandungan zat gizi yang ditentukan.
SISTEM PENENTU GERAKAN MOBILE ROBOT YANG BELAJAR SENDIRI CARA UNTUK BERGERAK MAJU DAN MENGINDARI TRABRAKAN MENGGUNAKAN NEURAL NETWORK (NN) Eru Puspita
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.v12i2.514.2011

Abstract

Commonly used for driving mobile robot is by using certain pre defined algorithm. This research will try to develop driving technique using continuous self learning NN while mobile robot on go. This research only observe about how mobile robot by it self can move forward an how to avoid a collision. Program NN will try to learn how to move forward, backward, turn left, turn right or other possibility depend on or by using collision experience. The test results obtained 82% successful runs forward and approximately 90% managed to avoid a collision.
PENGGUNAAN KRITERIA RcP PADA PEMILIHAN PEUBAH BEBAS TERBAIK JIKA TERDAPAT MULTIKOLINEARITAS Harmi Sugiarti
Jurnal Matematika Sains dan Teknologi Vol. 8 No. 1 (2007)
Publisher : LPPM Universitas Terbuka

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Abstract

Some procedures can be used for selecting independent variables, one of them is the procedure of all possible regression with robust Cp (RCp) criterion. This statistic is not sensitive with multicollinearity in model and outlier residuals. The aim of this article is to investigate the use of RCp criterion in selecting independent variables. The result of the simulation experimental data shows that the RCp criterion fits enough to select independent variables.

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