1,504 research outputs found

    Model Evapotranspirasi Pada Vegetasi Dengan Ketebalankanopi Yang Bervariasi

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    Evapotranspiration plays important key role on hydrological cycle and water balance in water catchment.PenmannMonteithformula expresses evapotranspiration rate which is governed by available solar radiation, characteristics of vegetation represented by aerodynamic resistance and stomata resistance.Canopy layer density isa characteristic of vegetation that influence the amount of solar radiation transferred and received by layers withinand underneath canopy. This article will describe model of evapotranspiration using Penman-Monteith formula on vegetation with different canopy layer assuming the Leaf Area Index (LAI) is constant.The model is applied onthe vegetation with canopy layer (N) is 3 and 10. The result shows that evapotranspiration model using Penman-Monteith formula is able to estimate evapotranspiration rate with margin error less than 1%. Assuming LAI is constant, the differenceof canopy layer numberproduces insignificant effect to evapotranspiration rate. Testing the model using N=3 and N=10 results margin error less than 1% aswell

    Survei Penggunaan Uji Statistik dalam Penelitian Tugas Akhir Mahasiswa dengan Topik Ergonomi di Prodi Teknik Industri Unika Atma Jaya Jakarta

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    This study presented a survey results of the statistical tools used by undergraduate university students in Department of Industrial Engineering, Faculty of Engineering, Atma Jaya Catholic University of Indonesia. A number of 26 reports of students’ final project from 2018-2020 was identified and studied. A checksheet form was developed to record the 14 statistical tools used by students consists of descriptive statistics (2 items), inference statistics (10 items), multivariate (1 item) and statistical package used (1 item). The data were analyzed for its frequency and percentage. Results showed that all reports used descriptive statistics to present participant’s demography of their research, as well as the summary of statistics. For inference statistics, the students used a variety of normality test, 2 t-test, anova, equal variance, proportion test, a few nonparametric tests, regression and correlation and multivariate statistics. For statistical package, most students used Minitab (46,2%), followed by SPSS (34,4%) and other such as AMOS, Listrel, PLS(15.4%). Among them, 11.5% used more than one software. In addition, the results of this study could be used to evaluate the contents of the relevant course.This study presented a survey results of the statistical tools used by undergraduate university students in Department of Industrial Engineering, Faculty of Engineering, Atma Jaya Catholic University of Indonesia. A number of 26 reports of students’ final project from 2018-2020 was identified and studied. A checksheet form was developed to record the 14 statistical tools used by students consists of descriptive statistics (2 items), inference statistics (10 items), multivariate (1 item) and statistical package used (1 item). The data were analyzed for its frequency and percentage. Results showed that all reports used descriptive statistics to present participant’s demography of their research, as well as the summary of statistics. For inference statistics, the students used a variety of normality test, 2 t-test, anova, equal variance, proportion test, a few nonparametric tests, regression and correlation and multivariate statistics. For statistical package, most students used Minitab (46,2%), followed by SPSS (34,4%) and other such as AMOS, Listrel, PLS(15.4%). Among them, 11.5% used more than one software. In addition, the results of this study could be used to evaluate the contents of the relevant course

    Studi Pengaruh Empat Faktor Tipografi terhadap Waktu Pencarian Kata pada Layar Komputer

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    This study aims to investigate the effect of font type, font size, line spacing and text background colour on visual search of “a predetermined word”. The study used a multifactorial experiment with four factors and 48 combinations. A number of 20 female undergraduate students participated in this study and their response time for each treatment combination was recorded. Anova test results showed that there were significant effect of font type (F=2.72, p=0.042) and font size (F=8.14, p=0.004) to the response time of subject. Further analysis using ANOM chart showed that verdana for font type and 12 pt for font size provide the fastest response time. Results of this study could be used by web designers for the production of web pages so that it will optimize interaction with the users

    ANALISIS PERBEDAAN KEBIJAKAN PENDANAAN DAN DIVIDEN ANTARA PERUSAHAAN TUMBUH DAN TIDAK TUMBUH PADA BURSA EFEK INDONESIA DENGAN PENDEKATAN ASOSIASI PROKSI INVESTMENT OPPORTUNITY SET (Studi pada Perusahaan Manufaktur yang Terdaftar Di Bursa Efek Indonesia Periode 2006-2009)

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    This study aims to examine the differenciation of financing policy and dividend policy between growth firms and ungrowth firms in Indonesian Stock Exchange that classified by the investment opportunity set value. Studies for manufacturing companies as listed in the Indonesian Stock Exchange for the period of 2006-2009. There are six proxy, used as firm growth indicators, such as : ratio book value of groups property, plant, and equipment to the book value of the assets (PPE/BVA), ratio price to earning (PER), ratio market to book value of equity (MKTBKEQ), ratio market to book value of asset (MKTBKASS), capital expenditures to market value of asset (CAPMVA), and capital expenditures to book value of asset (CAPBVA). These proxies are analized by common factor analysis. Forty percent of the highest in the category growth IOS, forty percent with the lowest category is not growing, and twenty percent by the middle IOS eliminated. The data in this study was collected from Indonesian Capital Market Directory (ICMD). Sampling technique using purposive sampling. The collected sample was 39 firms. The data is analyzed by using factor analysis method, test for normality, and different test. The results showed that the financing policy has a significant difference in the company to growth and ungrowth where the Debt to Equity Ratio (DER) firms growth larger, while Debt to Market Equity (MDE) is growing smaller companies. In terms of dividend policy has a significant difference in the company to growth and ungrowth where the Dividend Payout Ratio (DPR) is not different but Dividend Yields (DY) smaller firms growth more than the company does ungrowth
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