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Widyariset

widyariset
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Published by Lembaga Ilmu Pengetahuan Indonesia

ISSN : 14117932 EISSN : 24610976 DOI : -

Core Subject : Engineering,

Engineering

Widyariset is a scientific journal which publishes the results of research and development, assessment and systematic thinking about science and technology. The writers of the scientific papers in this journal come from researchers/researcher candidates from various institutions' research and development (R&D), and universities. Widyariset is published regularly three times a year: in April for the issue of Social Sciences and Humanities (IPSK), in August for the issue of Natural Sciences (IPA) and in December for the issue of Engineering Sciences (IPT).

Arjuna Subject : -

Articles 485 Documents

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COMMUNITY STRUCTURE OF MACROZOOBENTHOS IN SOUTH BIAK WATERS, BIAK, PAPUA Andriani Widyastuti
Widyariset Vol 16, No 2 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

The existence of macrozoobenthos in an coastal waters, can be used as indicators the physical quality of water. The aim of this study is to analyze the diversity and community structure of macrozoobenthos in coastal waters of South Biak waters. Research was conducted in Maret-Nopember 2011, in the coastal waters of South Biak. Sampling using a transect quadrant. Macrozoobenthos samples was preserve in formalin solution 10% and was identified in the laboratory. The value of diversity, similarity and dominance will be calculated from the data, and its relationship with environmental factors. The results was found 101 species by 3572 the number of individuals who are scattered in four stations (Paray, Ambroben, Yenures, and Sorido stations). Makrozoobenthos types were found consisting of four phyla (Annelida, Arthropoda, Echinodermata and Mollusca) derived from 8 classes of Polichaeta, crustaceans, Ophiuroidea, Echinodermata, Holothuroidea, Amphineura, Gastropoda and Bivalves. Value index of diversity (H ‘) ranged between 1, 1354 to 2.8011, Paray and Sorido waters are not polluted waters, and waters Ambroben and Yenures is being polluted waters. Uniformity value (E) ranged from 0.3407 to 0.7666, indicating the existence of species that dominate (approaching 0) and shows the uniformity of all types in the population (approaching 1).

PENGGUNAAN ARBITRAGE PRICING THEORY DALAM MENGUKUR RETURN KELOMPOK SAHAM SEKTORAL I Gede Widya Anantayoga; Noer Azam Achsani; Tubagus Nur Ahmad Maulana
Widyariset Vol 17, No 1 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

There are some approaches that can be done to quantify the risk for investors in order to produce maximum yields and one of the models used is the Arbitrage Pricing Theory (APT). APT is considered more flexible than the Capital Asset Pricing Model (CAPM) because the model can use a variety of various macroeconomic factors in calculating the risk premium of an asset or to establish a model of asset valuation. Macroeconomic factors of an established model can change over time so does the risk premium contained. The purpose of this study is to do analysis using APT whether macroeconomic variables (oil prices, the exchange rate of IDR against the USD, and the rate of inflation) are factors that affected stock returns in sectoral index in Indonesia. This study uses the time span from January 2007 to December 2012 with the object of study is 9 different sectors in sectoral stocks indice, whereas the method used is multiple linear regression. This study concludes that among the three macroeconomic factor that are used as research material (crude oil prices, the exchange rate of the rupiah against the U.S. dollar, and inflation), the dollar exchange rate is the most significant factors in measuring the sensitivity of return of sectoral stocks indice.

KEMAJUAN GENETIK SAPI LOKAL BERDASARKAN SELEKSI DAN PERKAWINAN TERPILIH Lusty Istiqomah
Widyariset Vol 13, No 2 (2010): Widyariset
Publisher : Pusbindiklat - LIPI

The objectives of this research were (1) to estimate the breeding value in order to study the genetic progress of local beef cattle, and (2) to study the effectiveness of breeding method through selection program and assortative mating. The research was conducted at Genetic and Animal Breeding Laboratory, Animal Husbandry Faculty of Bogor Agricultural University from January to March 2006. Data of birth weight from assortative mating between 5 sires and 50 dams have been collected during 2000 to 2005. The data were analyzed using B-Gen program. Selection method that was practiced in this population showed in line with selection method using breeding value criteria. An assessment of genetic progress indicated positive both in annual mean direct genetic trends and annual maternaltrends for average birth weight. The average of inbreeding value from five generation was low (0.01%). It was concluded that genetic improvement through selection of growth traits and positive assortative mating was possible.

INVENTARISASI ANGGREK EPIFIT DI KEBUN RAYA EKA KARYA BALI IG. Tirta; Sutomo Sutomo
Widyariset Vol 17, No 2 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Inventory of epiphyte orchid species was conducted at Eka Karya Bali Botanic Garden on 26 September to17 October, 2009. The host trees were selected randomly (purposive randomized sampling), especially selected host trees for epiphyte orchid. The results showed that there were 34 known species of orchids belonging to 14 genera. Bulbophyllum was the highest number of species (seven species). Generally, epiphytic orchids grew on thin substrate with light intensity and mostly on zone IV. There were 162 species as host trees, which were dominated by Prunus puddum Roxb. ex Wall., Araucaria bidwillii Hook., Toona sureni (Blume) Merr., Syzygium racemosum (Blume) DC., and Syzygium zollingerianum (Miq.) Amsh.

COMMUNITY STRUCTURE OF MAKROZOOBENTHOS IN ESTUARY OF BANYUASIN RIVER OF SOUTH SUMATRA Ni Komang Suryati; Eko Prianto
Widyariset Vol 15, No 2 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Community structure of macrozoobentos in estuary of Banyuasin important as based of knowledge about bioindicator environtment. The aim of this research was to examine the community structure of macrozoobenthos in estuaries Banyuasin river of South Sumatra. This research conducted by field survey method. Field sampling was selected by purposive random sampling. Macrozoobenthos samples were taken using ekman grab. Further silt that is picked up from the tool was filtered using a filter to separate from the mud. Samples was inserted into the bottle sampel and then identifyed in the laboratory. Results showed that the highest density of macrozoobenthos occured in Oktober and the lowest in April. Diversity of macrozoobenthos based on index Shannon-Wiener average of all station showed a value of 1< H’ < 3. There were significant differences (P<0,05) at each sampling month and the highest value found in June amounting to 1,82. The value of uniformity during the research as seen from the difference in observation time was low. For environtmental quality criteria based on the diversity index Shannon-Wiener showed that the value of IML is 1,62 which means that in the area in the station that is contaminated with medium level.

A CORRELATION STUDY BETWEEN STUDENTS' FIRST IMPRESSION TOWARD ENGLISH LESSON AND THEIR ACHIVEMENTS AT SEMARANG MERCHANT MARINE POLITECHNIC Vega F. Andromeda
Widyariset Vol 12, No 3 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

Kesan pertama pada umumnya akan memengaruhi hasrat dan minat seseorang tentang suatu hal. Kesan pertama seseorang pada sesuatu tersebut juga akan sulit untuk dilupakan. Pemahaman tersebut menjadi hal yang umum yang akan penulis teliti, terutama dalam pengajaran bahasa Inggris di dunia pendidikan, khususnya di Politeknik Ihnu Pelayaran Semarang. Tujuan dari karya tulis ilmiah ini adalah untuk mengetahui adakah hubungan yang signifikan antara kesan pertama siswa terhadap bahasa Inggris yang turnbuh dari guru mereka dengan prestasi pelajaran bahasa Inggris mereka. Metode pengumpulan data yang digunakan adalah dengan menggunakan angket dan dokumen. Setelah menganalisis kedua instrurnen tersebut, penulis menemukan data rata-rata nilai angket adalah 68.85 dan rata-rata nilai prestasi siswa sama dengan 65.42. Kemudian penulis memasukkan data tersebut pada product mement formula dengan hasil 0.192 di bawah nilai tabel r 0.297 dan 0.384 yang berarti bahwa hipotesis nol (Ho) diterima, sedangkan alternatif hipotesis ditolak. Dengan kata lain, "Tidak ada hubungan yang signifikan antara kesan pertama siswa terhadap bahasa Inggris yang tumbuh dari guru dengan prestasi mereka.

CHILD MORTALITY, NUTRITIONAL STATUS AND HEALTH CARE IN DOMPU DISTRICT, WEST NUSA TENGGARA, 2007–2011 Primasari Primasari
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Child mortality in West Nusa Tenggara province at 103 per 1000 live births, while the infant mortality rate Dompu 82 per 1000 live births. Therefore, it is necessary to study the explanation of the index child mortality in Dompu district, as well as view the status of nutrition and health care. This research is a descriptive study, the secondary data collection of health profiles Dompu DHO has been published within the period of 5 years from 2007 to 2011. Variabel taken are indicators related to child mortality. The results of this study indicate that the number of infant deaths rose sharply in 2009, by 39 per 1000 birth when compared to 2007 (1 per 1.000 births) and in 2008 (3 per 1000 births). In 2010, infant mortality fell to 12 per 1.000 births, but increased again in 2011 to 34 per 1000 births. Based on the findings in this study, it is necessary to improve the coverage of deliveries assisted by health personnel in order to reduce infant mortality. This can be done by exam the cause of child mortality.

THE COMMUNITY OF POLYCHAETA AT THREE SEAGRASS BEDS IN PARI ISLAND OF JAKARTA - Hadiyanto
Widyariset Vol 15, No 2 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

The community of polychaeta at three seagrass beds (Thalassia hemprichii, Thalassia hemprichii-Cymodocea rotundata-Enhalus acoroides, Enhalus acoroides) in Pari Island of Jakarta was studied on June 2010. Three core samples (0.02 m2) were randomly collected from three seagrass beds. A total of 27 species belonging to 14 families was found, and the most of dominant species was Mediomastus californiensis (21–50% of the total individuals). T. hemprichii was the highest of value of H’ and J’ (2.301 and 0.926 respectively), while E. acoroides was the highest of value of D (0.282), so the community of polychaeta at T. hemprichii was more stable than other seagrass beds.

ANALISIS HUBUNGAN ANTARA INDIKATOR PENDIDIKAN DAN KINERJA PEREKONOMIAN DI INDONESIA Chitra Indah Yuliana
Widyariset Vol 12, No 3 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

This research aims to investigate relationship between education indicator represented by literacy rate and Gross Domestic Product (GDP) real per capita as economic performance with annual data during period of 1980 until 2008 in Indonesia. The analysis method used in this research was Vector Auto Regression (VAR) with Granger Causality Test, Impulse Responses, and Variance Decomposition. In addition, Akaike and Schwarz Information Criterion determined optimum lag of 6 that could be estimated. Granger causality test showed literacy rate significantly Granger-caused GDP real per capita, but there was no significant Granger causality from GDP real per capita to literacy rate over research period. One of crucial implications of this research results is that we must and still need to make the highest priority of base education development especiallyliterate promotion so that high level of economic performance could be equally generated in improving the prosperity of Indonesian societies.

COMMUNITY OF INTRODUCED FISH IN LAKE BATUR, BALI Agus Arifin Sentosa; Danu Wijaya
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Lake Batur is the largest lake in Bali Island, however information on introduced fish community is not available yet. The research aimed to identify the community structure and ecological status of the introduced fish in Lake Batur, Bali. The study was carried out on May, July, and October 2011 using survey method. The fishes were obtained using experimental gill nets and by fishermen. Data analysis included index of diversity, dominance, and the abc (abundance-biomass comparison) curve. The results showed the tilapia (Oreochromis niloticus) was the dominant species. The status of introduced fish community suggested to ecological stress, but it was relatively undisturbed.

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Pusbindiklat Peneliti-LIPI (The National Training and Education Center for Researchers Development – Indonesian Institutes of Sciences) Jl. Raya Bogor Km. 46, Cibinong Science Center Cibinong - Bogor 16911

Location
Kota adm. jakarta selatan,

Dki jakarta

INDONESIA