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Sungkawa, Iwa
Bina Nusantara University
Computer Science & IT Engineering Mathematics

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Journal : ComTech: Computer, Mathematics and Engineering Applications

 1 
Penerapan Rasio Sampling Dalam Pendugaan Rasio Lahan Kritis di Wilayah Das Jratun Sungkawa, Iwa
ComTech: Computer, Mathematics and Engineering Applications Vol 3, No 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2419

Abstract

This study aims to examine the application of ratio estimators on a sampling method by taking the case of estimating the ratio of critical land of every county around Jratun watershed. Through the estimation, a general description of critical land deployment for each region (county) can be obtained. In addition, the estimator of hose/interval is also determined for the ratio with the real level of 0.05. The simple random sampling method is used in conducting the estimation of ratio of the critical land to the total land area. Theestimation results show that the ratio of the critical land to the total area for 19 districts reaches 23.72%.
Kajian Proporsi Keterlibatan Perempuan (Gender) dalam Usaha Tani Padi di Kabupaten Bandung, Subang, dan Karawang Sungkawa, Iwa
ComTech: Computer, Mathematics and Engineering Applications Vol 5, No 2 (2014): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v5i2.2290

Abstract

This study aimed to evaluate the involvement of women in Rice Farming Enterprise in Regency of Bandung, Subang and Karawang in a government program of gender equality. Through the estimation of proportion and descriptive studies by comparing figures targeted by the government of at least 30%, it can be evaluated that there is variability in all regencies. Further studies are analytical studies to determine the alleged intervals and hypothesis testing for proportions and to conduct studies by comparing observations and determined value by using the standard normal distribution. The results of the study shows that the role of women/gender in Rice Farming Enterprise is very dominant at each stage of planting, weeding and harvesting stages. For other stages such as land cultivation, Countermeasures Integrated Pest, irrigation and distribution, the women's role is less dominant. This information is expected to support the Agricultural Sector policy makersin developing women's empowerment and gender equity.
Uji Homogenitas dengan Sebaran Khi-Kuadrat dalam Evaluasi Suatu Sistem Sungkawa, Iwa
ComTech: Computer, Mathematics and Engineering Applications Vol 2, No 1 (2011): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v2i1.2728

Abstract

This paper discusses the application of khi-square distribution in homogeneity of variance test on the control of a system used in a process considered normally spread with a mean of and a variance (degree of homogeneity) of . It is necessary to test the hypothesis statistically Ho: with the average μo value is unknown, and the statistic used is Khi-square distribution. On this occasion, an evaluation is executed upon a "Matsuyama" stabilizer (standard volt single phase (L)) to be used in Srengseng, Lenteng Agung, South Jakarta. Based on the test results of upon the variance with average standard voltage 220 volt, the electricity consumers in Srengseng are encouraged to use the stabilizer for household appliances that require voltage stability. By examining the voltage fluctuations at the location and stabilizer conditions (input range), the test result carried out through variance similarity test states that “Matsuyama” stabilizer is eligible and applicable in the area. 
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