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Jurnal Matematika Sains dan Teknologi
Published by Universitas Terbuka
ISSN : 14111942     EISSN : 24433586     DOI : -
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 280 Documents
PENGGUNAAN METODE ARIMA DALAM MERAMAL PERGERAKAN INFLASI Hartati, Hartati
Jurnal Matematika Sains dan Teknologi Vol 18 No 1 (2017)
Publisher : LPPM Universitas Terbuka

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Inflation is a problem which haunts the economy of each country. Its development is which continually increasing make a drag on economic growth to a better direction. Inflation tends to occur in developing countries like Indonesia which is an agricultural country. To overcome the instability of inflation, one way to do is to predict the time series data. Methods Autoregressive Integrated Moving Average (ARIMA) has the ability to capture the necessary information about the wood as well as able to cope with the instability of inflation of inflation. This is because ARIMA is a method of forecasting time series are suited to predict the number of variables in a fast, simple, inexpensive, accurate, and only requires the data variables to be predicted. Inflasi merupakan suatu masalah yang menghantui perekonomian setiap negara. Perkembangannya yang terus-menerus mengalami peningkatan menjadi hambatan pada pertumbuhan ekonomi ke arah yang lebih baik. Perubahan laju inflasi cenderung terjadi pada negara-negara berkembang seperti halnya Indonesia yang merupakan negara agraris. Untuk menanggulangi terjadinya ketidakstabilan laju inflasi, salah satu cara yang dapat dilakukan adalah dengan meramalkan data time series. Metode Autoregressive Integrated Moving Average (ARIMA) memiliki kemampuan untuk menangkap informasi-informasi yang diperlukan mengenai laju inflasi serta mampu menanggulangi ketidakstabilan dari laju inflasi. Hal ini dikarenakan ARIMA merupakan suatu metode peramalan time series yang cocok digunakan untuk meramal sejumlah variabel secara cepat, sederhana, murah, dan akurat serta hanya membutuhkan data variabel yang akan diramal.
KERAGAAN KUALITATIF KLON KENTANG (G0) DARI STEK MINI DALAM RUMAH KETAT SERANGGA Gunarto, Anton
Jurnal Matematika Sains dan Teknologi Vol 9 No 2 (2008)
Publisher : LPPM Universitas Terbuka

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The purpose of the research is to investigate the phenotypic performances as qualitative assessment characters of three potato clones resulted from protoplasm fusion (A5) and two clones from botany seeds (PAS3063 and PAS3064) which had been identified to be resistant from bacterial wilt disease (Ralstonia solanacearum). The commercial potato varieties (Granola and Atlantic) were used as a comparison varieties. All five varieties were produced from mini graft. The result of qualitative performance that more prominent were on A5 clone with the characters that the branch was red, tuber skin was purple/violet and its ability produce flowers. Meanwhile, the branch of another clone was green, tuber skin was yellow/brown, and it does not produce much flowers. The color of tuber flesh were white except on Granola which was yellow. The result of cluster analysis that based on the morphologic character from each plant showed that PAS3063 was closed to Atlantic variety characteristic, PAS3064 was closed to Granola variety, and A5 different from both commercial varieties.There fore, it is proposed that PAS3063 and PAS3064 can be used as substitutes for commercial cultivars, while further consideration should be made for A5 since it is signifoutly different with the familiar cultivars.
NUTRISI DAN BEBERAPA KRITERIA HALAL KERUPUK KULIT JANGEK Nadia, Lula
Jurnal Matematika Sains dan Teknologi Vol 6 No 2 (2005)
Publisher : LPPM Universitas Terbuka

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The research goal was to find the nutrition content of the skin crackers ‘Kerupuk Jangek’. Several steps were used to determine the traditional production process, the nutrition content, hedonic value, and halal criteria. The research employed survey and laboratory works. Survey was conducted in Jangek area, West Sumatera to gain information on the skin cracker production process and its type industry. Laboratory works were done in IPB for organoleptic testing. Based on the BPOM guidance, the Kerupuk Jangek production process has followed the halal requirement. The beef skin cracker was more crunchy and tasty than the buffalo skin cracker. The crackers contained high level of protein which can not be digested and absorbed by human body. The crackers contained higher level of lipid than the raw. The beef skin crackers contained less mineral and water than the buffalo skin crackers.  
EFEKTIFITAS KONSENTRASI PACLOBUTRAZOL PADA PISANG CV. AMPYANG SECARA IN VITRO Susilawati, Susilawati; Sulistiana, Susi
Jurnal Matematika Sains dan Teknologi Vol 19 No 1 (2018)
Publisher : LPPM Universitas Terbuka

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Banana is a tropical Indonesian fruit that its cultivation is supported by the Government of Indonesia. Ampyang banana is one of popular and widely consumed banana. Availability of quality seedling is a challenge for Ampyang banana farmer. In vitro multiplication of Ampyang banana is a promising alternative method of breeding. However, fast growth of Ampyang banana in in vitro culture is an obstacle in subculture periode. Paclobutrazol is a compound that can impede giberellin synthesis and reduce vegetative growth in plants. The aim of the study is investigate different paclobutrazol concentration (2.5; 5; 7.5 ppm) to in vitro culture of  Ampyang banana during plantlet phase to reduce growth of the plantlet. Observation was conducted during 2-10 weeks after planting. The result showed that there was no signifincant difference of leaf number among various concentration of placobutrazol which was given during 10 weeksafter planting. Meanwhile, the lowest number of new roots was found in the 2.5 ppm paclobutrazol concentration during 4 to 10 weeks after planting. The shortest root was found in the 7.5 ppm paclobutrazol concentration from 4  to 8 after planting. The lowest plant height was in the group of 5 ppm of placobutrazol concentration. Pisang merupakan komoditas buah tropika unggulan Indonesia yang pengembangannya didukung oleh pemerintah Indonesia. Pisang Ampyang merupakan salah satu pisang yang banyak digemari dan dikonsumsi. Ketersediaan bibit berkualitas merupakan salah satu tantangan bagi petani pisang Ampyang dalam pemenuhan permintaan pasar. Perbanyakan pisang Ampyang secara in vitro menjadikan salah satu alternatif menjanjikan untuk ketersediaan bibit dipasaran. Namun pertumbuhan pisang Ampyang yang relatif cepat menjadi kendala di dalam kultur in vitro yang berdampak pada seringnya periode subkultur. Paclobutrazol adalah salah satu senyawa yang memiliki aktifitas dapat menghambat sintesis giberelin pada tanaman dan mampu mengurangi pertumbuhan vegetatif pada tanaman. Tujuan dari penelitian ini adalah pemberian berbagai konsentrasi paclobutrazol (2,5 ppm; 5 ppm; 7,5 ppm) terhadap kultur in vitro pisang Ampyang pada fase planlet untuk menekan pertumbuhan planlet pisang Ampyang. Pengamatan dilakukan mulai 2-10 minggu setelah tanam (MST). Hasil penelitian menunjukkan bahwa pada jumlah daun tidak terdapat perbedaan yang nyata antar konsentrasi peclobutrazol yang diberikan selama 10 MST. Pada peubah pengamatan jumlah akar baru terendah terdapat pada konsentrasi 2,5 ppm pada 4 MST hingga 8 MST. Panjang akar menunjukkan akar terpendek terdapat pada 7,5 ppm dari 4 MST hingga 8 MST. Tinggi tanaman terendah terdapat pada pemberian paclobutrazol pada konsentrasi 5 ppm.
PENGGUNAAN BUTIL HIDROKSI TOLUEN UNTUK MENGHAMBAT KETENGIKAN MINYAK KELAPA HASIL OLAHAN PETANI Rahmatiyah, Rahmatiyah
Jurnal Matematika Sains dan Teknologi Vol 13 No 2 (2012)
Publisher : LPPM Universitas Terbuka

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Traditionally refined coconut oil processed by farmers is less durable than the factory processed. Addition of Butyl Hydroxy Toluene (BHT) in the coconut oil was known to decrease its rancidity due to prolong storage and to increase its durability. With a variety of treatments it was expected that coconut oil processed by farmers can be stored up to 3 months. The purpose of this study is to recommend the use of BHT in precise concentration by farmers to inhibit rancidity of the refined coconut oil. The study was consisted of three treatments, namely control, addition of BHT 0.01%, and 0.02%. Analysis of the three treatments showed significant difference in the degree of rancidity for the addition of 0.01% and 0.02% BHT compared to the control. Therefore, addition of 0.01% BHT treatment can be recommended to farmers to extend the storage life of the refined coconut oil. Minyak kelapa olahan petani lebih pendek masa simpannya dibandingkan minyak hasil olahan pabrik. Penambahan Butil Hidroksi Toluen (BHT) pada minyak kelapa diketahui dapat mengurangi ketengikan dan memperpanjang masa simpan minyak. Dengan berbagai perlakuan diharapkan minyak kelapa hasil olahan petani dapat disimpan hingga 3 bulan. Tujuan dari penelitian ini adalah untuk merekomendasikan penggunaan BHT dengan konsentrasi yang tepat bagi para petani untuk menghambat ketengikan minyak kelapa. Penelitian ini terdiri dari tiga perlakuan yaitu kontrol, penambahan BHT 0,01%, dan 0,02%. Hasil analisis ketiga perlakuan menunjukkan beda nyata pada derajat ketengikan untuk penambahan BHT 0,01% dan 0,02% dibandingkan dengan kontrol. Dengan demikian, perlakuan penambahan BHT 0,01% dapat direkomendasikan kepada petani untuk memperpanjang masa simpan minyak.
POLA PEMANFAATAN SUMBER DAYA, SUBSISTENSI DAN POLA HUBUNGAN PATRON-KLIEN MASYARAKAT NELAYAN DANAU TEMPE, SULAWESI SELATAN Priyatna, Fatriyandi Nur; Sumartono, Sumartono
Jurnal Matematika Sains dan Teknologi Vol 12 No 1 (2011)
Publisher : LPPM Universitas Terbuka

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The objective of this article is to study the relation among resource utilization pattern, subsistence and patron client relationship in Danau Tempes fisheries community, South Sulawesi, using a qualitative research method. Data were collected purposive for both small scale and relatively big scale fisheries by means of indepth interview and observation. Scotts moral economy framework was used to analyze the nature of social phenomena. The results show that fisheries resource scarcity due to intensive fishing activities were the reason behind fisheries communitys strategy to handle the subsistence crisis. Patron-client relation was used by fisheries community which hold trust and kinship in regard. The relation was also based on mutual solution in terms of social reciprocity. Clients tend to maintain their relation to patrons due to safety and security reasons from their subsistence crisis, eventhough they have smaller economic profit from that relation. While patrons help clients based on social obligation to help others.
IDENTIFIKASI Anisakis sp. PADA BEBERAPA IKAN LAUT DI BEBERAPA TEMPAT PELELANGAN IKAN (TPI) CILACAP Utami, Prasetyarti
Jurnal Matematika Sains dan Teknologi Vol 15 No 1 (2014)
Publisher : LPPM Universitas Terbuka

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Konsumsi ikan laut makin meningkat di masyarakat, tetapi beberapa jenis penyakit zoonosis yang berasal dari ikan laut telah ditemukan, salah satunya anisakiasis. Anisakiasis adalah salah satu penyakit yang disebabkan oleh infeksi larva stadium III cacing nematode anisakis, dan dapat menginfeksi manusia (zoonosis). Transmisi larva stadium III Anisakis sp. ke manusia terjadi ketika manusia mengkonsumsi ikan laut mentah. Anisakis sp. menyebabkan penyakit granuloma eosinofilik dalam usus manusia. Penemuan larva Anisakis sp. dalam beberapa ikan laut dapat digunakan sebagai indikator kualitas daging ikan berdasarkan nilai intensitas parasit. Artikel ini bertujuan untuk mengidentifikasi Anisakis sp.pada beberapa ikan laut di 3 tempat pelelangan ikan (TPI) Cilacap. Metode penelitian adalah survei dengan teknik pengambilan sampel secara purposive sampling. Area sampling di 3 TPI yaitu: Pelabuhan Samudra, Teluk Penyu, dan Lengkong. Ikan sampel berupa kembung, selar, dan ikan tengiri swanggi. Pemeriksaan dilakukan di Laboratorium Parasitologi dan Entomologi, Fakultas Biologi Unsoed, yang meneliti organ internal, tubuh, dan daging ikan. Identifikasi Anisakis sp. dilakukan berdasarkan Moller dan Anders, 1986. Larva Anisakis sp. ditemukan dan diidentifikasi adalah larva stadium III Anisakis sp. Jumlah Anisakis sp. tertinggi ditemukan pada ikan selar. Nilai Prevalensi larva Anisakis sp. yang ditemukan di selar, kembung, dan ikan tengiri swanggi dapat menunjukkan bahwa ikan-ikan tersebut memiliki kualitas daging yang relatif buruk.
ESTIMASI NILAI PENURUNAN KESEHATAN AKIBAT POLUSI GAS NOX DI UDARA DKI JAKARTA Listyarini, Sri; Tarumingkeng, Rudy C; Fauzi, Akhmad; Hutagaol, Parulian
Jurnal Matematika Sains dan Teknologi Vol 8 No 2 (2007)
Publisher : LPPM Universitas Terbuka

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The aim of this research is to estimate the value of health degradation caused by nitrogen oxide (NOx) gas as one of the air pollutions in Jakarta Province. The economic growth in urban area may affect lifestyle which will increase the energy demand. Fossil fuel as the main energy emitting some gases to the ambient, one of them is NOx gas.  In this research analysis of factors that influenced NOx ambient concentration is based on the socials, economics, and meteorological data from Indonesia Statistics Center (BPS) and Bureau of Meteorology and Geophysics (BMG). The prediction of the cost that has to be paid by the persons who are exposured by NOx gas and will get respiratory symptomps is done by developing the dynamic simulation model. The result of this research is by 2025 the Jakarta residences that will have respiratory symptomps caused by the NOx air pollution should pay about 1 trillion (1012) rupiahs. To reduce this pollutant it is recommended to develop public policies based on the economic and environmental concern.
Kajian Beberapa Uji Kenormalan dan Kaitannya dengan Asumsi Kenormalan pada Beberapa Uji Statistika Santoso, Agus
Jurnal Matematika Sains dan Teknologi Vol 6 No 1 (2005)
Publisher : LPPM Universitas Terbuka

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T-test is proposed as a parametric test to evaluate mean of population(s).  Therefore, it is assumed that the data are normally distributed. Recently simulation based research reveal that t-test are robust against non-normality assumption, as long as the distribution of the data are symmetric. For that reason, it is interesting to evaluate the normality test that commonly used before the t-test is applied, particularly on its power and its suitability on symmetrical assumption of t-test on distribution of the data.  On this research, the evaluation on normality test was focused at several tests, which are Anderson Darling, Kolmogorov-Smirnov, Ryan-Joiner, and normality test based on skewness and kurtosis, wether the t-test was restricted in evaluation of mean of one population. The simulation reveals that, in general, Anderson-Darling has greater power than the other test in evaluating the normality of the distribution of the data, wether the normality test based on skewness and kurtosis have greater suitability on symmetrical assumption of t-test on distribution of the data. Hence, it is recommended that the normality test based on skewness and kurtosis are used to evaluate the symmetrical assumption of t-test on distribution of the data.
ISOLASI DAN IDENTIFIKASI BAKTERI PEREDUKSI SULFAT PADA AREA PERTAMBANGAN BATU BARA MUARA ENIM, SUMATERA SELATAN Yusron, Muchamad; Lay, Bibiana W; Fauzi, Anas M; Santosa, Dwi Andreas
Jurnal Matematika Sains dan Teknologi Vol 10 No 1 (2009)
Publisher : LPPM Universitas Terbuka

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Sulfate reducing bacteria utilize sulfate as their terminal electron acceptor and reduce it to sulphide. Acid mine drainage, by-products of mining activities, is an acidic sulfate-rich wastewater suitable habitat for sulfate reducing bacteria. Isolation and identification of sulfate reducing bacteria collected from Muara Enim coal mining, South Sumatra was carried out at Laboratory of Environmental Biotechnology, Indonesian Center for Biodiversity and Biotechnology (ICBB), Bogor, and Laboratory of Microbiology, Faculty of Veterinary, Bogor Agricultural University. Postgate B liquid media was used for isolation and purification via serial dilution. Physiological and biochemical characterization was done based on Bergeys Manual of Determinative Bacteriology. Fifteen pure isolates have been isolated with diverse characteristics. Eight isolates can sustain at pH 3, while the rest sustain at pH 4 or above. Sulfate reduction efficiency of each isolates were different, but increased as the pH increased. The bacteria are classified as Desulfovibrio sp., which is characterized straight rods, motile, non spore-forming and able to grow in simple organic carbon.

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