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All Journal JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Pembangunan Nagari Jurnal Rekayasa elektrika
Melinda .
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Public Health

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Penguatan Daya Saing Sektor Pertanian Barbasis Usaha Tani Skala Kecil; Review Literature Silfia .; Helmi .; Melinda .; Henmaidi .
Jurnal Pembangunan Nagari Vol 3 No 1 (2018)
Publisher : Badan Penelitian and Pengembangan (Balitbang), Padang, West Sumatra, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (321.043 KB) | DOI: 10.30559/jpn.v3i1.77

Abstract

Agricultural competitiveness is a prerequisite to benefit from free trade. Increasing the competitiveness of agriculture can not be separated by the existence of small-scale farming because Indonesia's agricultural sector is dominated by cultivation activities conducted in small-scale units, inefficient, low productivity, low value added and low trading performance strategy is needed in improving the competitiveness of small scale farm-based. This review is a qualitative description presenting a review literature on the concept of competitiveness and the dynamics of agriculture based on small-scale farming and how to build competitivenessof small-scale farmer
IDENTIFIKASI MOLEKULER BEAN COMMON MOSAIC VIRUS YANG BERASOSIASI DENGAN PENYAKIT MOSAIK KUNING KACANG PANJANG Melinda .; Tri Asmira Damayanti; Sri Hendrastuti Hidayat
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 15 No. 2 (2015): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.316 KB) | DOI: 10.23960/j.hptt.215132-140

Abstract

Molecular identification of bean common mosaic virus associated with yellow mosaic disease on yard long bean. Bean common mosaic virus (BCMV) has been reported as one of the causal agents of yellow mosaic disease on yard long bean in West Java and Central Java. Infected plants showed mosaic, yellowing, and mixture of yellow mosaic. The research was conducted to identify the diversity of BCMV associated with yellow mosaic disease based on coat protein (CP) gene sequences. Symptomatic leaf samples were collected from yard long bean growing areas in several districts in West Java (Bogor, Cirebon, Subang, and Indramayu), and several districts in Central Java (Tegal, Klaten, Solo, Yogjakarta, Sleman, and Magelang). Molecular detection using RT-PCR method was carried out by using specific primer to BCMV which will amplify the CP gene. DNA fragment, + 860 bp in size, was successfully amplified from 8 out of 13 leaf samples, i.e samples from three villages in Bogor District (Cangkurawok, Bubulak, Bojong), and five samples from District of Cirebon, Subang, Solo, Sleman, and Tegal. Sequence analysis of those DNA fragment showed that 4 isolates (Bogor-Cangkurawok, Subang, Solo and Sleman) had the highest homology to BCMV-BlC from Taiwan, whereas 2 isolates (Cirebon and Tegal) had the highest homology to BCMVNL1 from England. Further, phyllogenetic analysis revealed that those of 4 isolates were closely related to BCMV-BlC from Taiwan based on nucleotide as well as amino acid sequences; while those other 2 isolates were closely related to BCMV-NL1 from England based on nucleotide sequences but closely related to BCMV-BlC Y from China based on amino acid sequences. Phyllogenetic analysis showed that those of 6 BCMV isolates separated in two different clusters; 4 isolates (Bogor- Cangkurawok, Subang, Solo, and Sleman) in cluster 1 together with BCMV-BlC from Taiwan, while other 2 isolates (Cirebon and Tegal) in cluster 2 together with BCMV-NL1.
EXIT (EXtrinsic Information Transfer) Chart Analysis for BCH (Bose-Chaudhuri- Hocquenghem) Codes Melinda .
Jurnal Rekayasa Elektrika Vol 9, No 2 (2010)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2050.574 KB) | DOI: 10.17529/jre.v9i2.1056

Abstract

BCH (Bose-Chaudhuri-Hocquenghem) codes are used extensively in numerous applications in order to achieve reliable data transfer. In this paper, the parameters of BCH codes are introduced and used to investigate its applications, characteristics and performance when employed as inner and outer code in decoding method. To evaluate the parameters, three types of BCH codes: (7,4,3), (15,11,3) and (31,26,3); are applied. In addition, the implementation of BCJR (Bahl, Cocke, Jelinek and Raviv) algorithm is discussed by applying APP-SISO (a posteriori probabilities – Soft Input Soft Output) decoding for BCH codes. The proposed cheme employing inner and outer decoding of BCH codes is analyzed and compared by using EXIT characteristic of BCH decoders. The channel capacity measurements for different rates inner BCH codes are described by using BPSK modulation over AWGN channel. Lastly, the BER performances of BCH codes are observed for different types, in order to obtain better performance of BER plot indeed.
Co-Authors Helmi . Henmaidi . Silfia . SRI HENDRASTUTI HIDAYAT TRI ASMIRA DAMAYANTI