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Jurnal Ilmu Dasar
Published by Universitas Jember
ISSN : 24425613     EISSN : -     DOI : https://doi.org/10.19184/jid.v24i2.36657
Core Subject : Education, Engineering,
Control & Systems Engineering Mathematics
Jurnal ILMU DASAR (JID) is a national peer-reviewed and open access journal that publishes research papers encompasses all aspects of natural sciences including Mathematics, Physics, Chemistry and Biology. JID publishes 2 issues in 1 volume per year. First published, volume 1 issue 1, in January 2000 and avalaible in electronically since 2012 with ISSN 1411-5735 (Print) and avalaible in electronically since 2012 with ISSN 2442-5613 (online). Jurnal ILMU DASAR is accredited SINTA 3 by the Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia (Kemendibukristek) No. 152/E/KPT/2023 (September 25, 2023), Ministry of Research, Technology and Higher Education of the Republic of Indonesia (RISTEKDIKTI), No. 200/M/KPT/2020 (December. 23, 2020). All accepted manuscripts will be published worldwide JID has been indexed in DOAJ, Dimension, OCLC WorldCat, PKP Index, Crossref, Google Scholar, Base, Garuda, and OneSearch. JID have been collaborated in KOBI-ID (Konsorsium Biologi Indonesia) and HKI (Himpunan Kimia Indonesia) since 2017.
Arjuna Subject : Matematika - Kontrol dan Optimasi
Articles 16 Documents
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Search results for , issue "Vol 11 No 2 (2010)" : 16 Documents clear
Predicting Interval of Product Reliability With Bootsrap Percentile Method Akhmad Fauzy; Epha Diana Supandi
Jurnal ILMU DASAR Vol 11 No 2 (2010)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (46.702 KB)

Abstract

In this article, two methods are proposed to give the interval estimation for reliability function from a product. Reliability function is a probability of an individual (product) surviving till time t. Some resecearchers usually use traditional method to construct interval estimation. This interval needs an assumption that sample is exponentially distributed. This research applied another method, namely Bootstrap percentile. Bootstrap method is more potential in constructing interval estimation for reliability function from a product.
Composition Of Mangrove Species On Ngurah Rai Mangrove Forest Pemogan Village, Denpasar Selatan District, Denpasar Municipality, Bali Province Anak Agung Ketut Darmadi; I Putu Gde Ardhana
Jurnal ILMU DASAR Vol 11 No 2 (2010)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (48.966 KB)

Abstract

The research on analysis of composition of mangrove forest vegetation is a fundamental that can be used toutilize mangrove forest. The research was carried out at Ngurah Rai Mangrove forest, Pemogan village,Denpasar Selatan district, Denpasar Municipality, Bali province be using systematic plot sampling method. Theresearch result showed that there are seven kinds of mangrove tree found, such as Soneratia alba (L.) Blanco,Rhizophora apiculata BL., Avicennia alba Blume, Bruguiera gymnorrhiza (L.) Lamk., Xylocarpusmoluccensis (Lam.) M. Roem., Aegiceras corniculatum (L.) Blanco, and Ceriops tagal (Perr.) C.B. Robinson.Number of S. alba (L.) Blanco growth increase from sea to land. The highest important value was found in S.alba (L.) Blanco.
CPO Bleaching Optimization Using Activated Charcoal And Bentonite A Abdullah; Yudhistira Abdi Atmanegara; Radna Nurmasari
Jurnal ILMU DASAR Vol 11 No 2 (2010)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

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Abstract

Research of Crude Palm Oil (CPO) bleaching optimization using activated charcoal and bentonite on biodiesel synthesize had been done. The aim of this research is to find optimum condition of bleaching process, by making variation of activated charcoal and bentonite ratio as adsorbent (1:0, 1:10, 1:15, 1:20 and 0:1), temperature (non heated, 40-50oC, 60-70oC, 80-90oC and 100-110oC) and time (1; 1,5; 2; 2,5 and 3 hours). The results of this research will be used as optimal conditions for synthesizing biodiesel. Optimum condition was determined by observing the lowest absorbent which was measured by using spectronic-20 on 445 nm. Results showed that optimum activated charcoal and bentonite adsorbent ratio was 0:1, optimum temperature was 100- 110oC and optimum time was 3 hours.
Optimum Simplex Lattice Designs of Low Order Multiresponse Surface Model by D-Optimum Criterion Ruslan Ruslan; Susanti Linuwih; Purhadi Purhadi; Sony S
Jurnal ILMU DASAR Vol 11 No 2 (2010)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (164.419 KB)

Abstract

Simplex lattice design is a part of mixture designs has patterns simplex {q, m} where q is number of factors andm is degree of polynomial. If entangling a number of the response variables which measured from a number offactors called the multiresponse surface model, hence to obtain get the matrix designs of optimum mixture atmultiresponse surface model will be used by the optimum-D criterion. In this research, we studied abouttheoretical approach to get optimum simplex lattice design of low order multiresponse surface model byoptimum-D criterion. We assumed that design points have similar weighted values.
Pd Seed Under-layer Effect on Coercive Field of Perpendicularly Magnetized Co/Pd Multilayer Films Budi Purnama
Jurnal ILMU DASAR Vol 11 No 2 (2010)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

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Abstract

Coercive field, Hc dependence of Pd seed under layer has been investigated for Co/Pd multilayer with perpendicular anisotropy magnetic. Structured Co/Pd multilayer fabricated by DC sputtering machine on glass substrate. Results indicated that Pd seed under layer of 50Å thicknesses successfully increased Hc from 800Oe to 1600Oe. The results could be related to the Co/Pd multilayered grain to grow separately leading exchange de-coupling effect, beside the increase of surface interaction.
Similarity for Binary Data Based on the Value of Entropy and Structure Patterns Categories Kariyam Kariyam
Jurnal ILMU DASAR Vol 11 No 2 (2010)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.865 KB)

Abstract

Similarity of two objects that have a form of binary data, usually calculated based on the frequencies in thecontingency table that includes all discrete random variables. In this article we will discuss the similaritymeasures for binary data based on entropy values and structural patterns of the two object categories. Measuringsimilarity based on the value of entropy and structural pattern of categories can be used as a validation measureof similarity for binary data.

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