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Journal of Multidisciplinary Academic
Published by Kemala Indonesia
ISSN : 25410369     EISSN : 2613988X     DOI : https://doi.org/10.51971
Core Subject : Education, Social, Engineering,
Education Engineering Social Sciences
Journal of Multidisciplinary Academic is published bimonthly by the Kemala Publisher, Indonesia. Journal of Multidisciplinary Academic publishes original work of importance in any field which will interest readers from more than one discipline. Authors are requested to write their papers and reports in a manner and style that is intelligible to specialists and non-specialists alike. Research contributions, which are peer reviewed, are of three kinds: Review Articles, Research Articles and Research Letters. Our second important function is to serve as a forum for debate about recent developments in research and in higher education. (The last category comprises articles which opine on important recent developments either in the published literature or at conferences.) These contributions are not peer reviewed, and potential authors are encouraged to liaise with the Editor-in-Chief before submitting work of this nature to the Journal
Arjuna Subject : Umum - Umum
Articles 5 Documents
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Search results for , issue "Vol 1, No 1 (2017): Science, Engineering and Social Science Series" : 5 Documents clear
The Level Global Competitiveness and Personal Level Development of Aceh Handicraft Entrepreneurs Afri Yordan; Ahmad Saleh Nasution; Nor Aishah Buang
Journal of Multidisciplinary Academic Vol 1, No 1 (2017): Science, Engineering and Social Science Series
Publisher : Penerbit Kemala Indonesia

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Abstract

The aim of this study was to examine the level of global competitiveness and personal development of handicraft entrepreneurs. Differences between the level of competitiveness and educational background, level of labour skills, type of product, market area and sale methods. The total of 155 participants handicraft have business minimum of three years. The data were collected by distributing a questioner which is divided into six part, entrepreneur profiles, business profiles, business support, business market, used of technology, innovation of product and personal entrepreneur development. Questionnaires and instrument was adapted from Nor Aishah (2009) will use to research. Six person already selected were interviewed to further explicate and support the phenomenon this research. This study also determines whether the level competitiveness and personal development have a positive relationship with entrepreneurs. Result of descriptive analysis found that the mean level of the handicrafts entrepreneur competitiveness at a moderately high (min 3.46). Pearson correlation analysis showed a positive correlation but moderate strong between the level of competitiveness and the level of personal development entrepreneurs handicraft with value (r=0.443). One-way ANOVA test results shown there are two significant difference between the level competitiveness with industry type [F (2,152) = 0.042, p
Design of SCADA Wireless System Protocol-Based AX.25 for Monitoring Micro hydro Power Plants Salahuddin Salahuddin; Yusman Yusman; Bakhtiar Bakhtiar; Fadhli Fadhli
Journal of Multidisciplinary Academic Vol 1, No 1 (2017): Science, Engineering and Social Science Series
Publisher : Penerbit Kemala Indonesia

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Abstract

With a range of long distances or depths and areas beyond the reach of the internet it is necessary to design a wireless SCADA system based on the AX.25 protocol for the purpose of monitoring Micro hydro power generation and forming a prototype in a model of a micro hydro power plants (Micro hydro power plant) wirelessly monitoring system. The method used in this research is quantitative method, by designing a system to monitor Micro hydro power plant wirelessly by utilizing AX.25 protocol. This system can monitor several Micro hydro power plant parameters such as voltage, current and frequency and turbine rotation so that it can be accessed directly at one central location. Data transmitted by Remote Terminal Units (RTUs) may serve as a reference for operators to decide on further steps if any monitored Micro hydro power plant parameters change from a predetermined standard. This prototype has been simulated using the Proteus 8.6 and LabView 2012 software. Data from the sensors transmitted over radio frequency using KYL 1020 from each RTU to MTU and connected to the computer using LabView software and displayed on the computer with taking into account the operating parameters, characteristics and workings of the AX protocol. The RTU system has been successfully simulated using 2 ACS712 current sensors, voltage sensor, zero crossing point, frequency sensor and rotation sensor functional for monitoring Micro hydro power plant parameters. The AX.25 protocol has been applicable in the wireless SCADA network for monitoring the performance of the Micro hydro power plant by embedding in a KYL-1020UA transceiver radio using the 433 MHz frequency and the AFSK modulation system. Radio transmitter KYL-1020UA has been successfully simulated to send data from sensors to display on the computer through SCADA built applications. The data changes in the RTU section can be displayed properly on the GUI in accordance with the existing display at the Micro hydro power plant location.
Direct-DC Power System Generation Based on Single-Phase Rooftop Photovoltaic in Residential Low Voltage Feeder Siti Amra; Nelly Safitri; Akhyar Akhyar; Usmardi Usmardi
Journal of Multidisciplinary Academic Vol 1, No 1 (2017): Science, Engineering and Social Science Series
Publisher : Penerbit Kemala Indonesia

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Abstract

The trend of converting direct current (DC) system into alternating current (AC) using inverter becomes common since the system efficiency appropriately improves. Additionally, the mitigation on direct-DC power system requires transformer and inverters inside the appliances due to lower and convert the 230VAC into useable DC voltage. This paper proposes the direct-DC power system generation based on single-phase rooftop photovoltaic (PV) in the residential low voltage (LV) feeder. The proposed simulation designates the power system components included in the modeling of the AC and direct-DC houses, which the included power system components downstream of the PV array. The efficiency of direct-DC power supply, grid interactive inverter and charge controller are simulated. The results show that the peak curve efficiency of direct-DC power supply has DC power input narrow to 400VDC. It is then become 2% higher than 220VAC power input. While the inverter with multiple MPPT efficiency curve has the peak of 96-97% after 30% loads, while when it is partly loads, with the power capacity below 1000W, has peak at range of 86-95%. Then the efficiency curve of charge controller with MPPT for partly load scheme below 30W output power the peak is about 90-94%.
Evaluation of hospital’s obedience in medical solid waste management Yuni Lisafitri; Merza Rahmawati; Rizka Firdausi Pertiwi; Bambang Prasetio
Journal of Multidisciplinary Academic Vol 1, No 1 (2017): Science, Engineering and Social Science Series
Publisher : Penerbit Kemala Indonesia

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Abstract

Waste is an environmental issue that quite unsettling right now. Hospitals are health facilities for community but also become one of waste contributor. Waste from hospital activities was called medical waste. Medical waste can be a source of disease for humans and other living organism and can disrupt environmental stability if not managed properly. The management of medical waste must be appropriate with regulations, but there are still many health facilities that have not managed according to the regulations. This study was conducted to evaluate of medical waste management in hospital to government regulation No. 101/2014 and Regulation of environment and forestry minister No. 56/2015. The research was conducted through several step from literature study to direct survey in the field through interviews and observations of the medical waste management. That information is evaluated in accordance with the waste management that has been regulated in government regulation No. 101/2014 and regulation of environment and forestry minister No. 56/2015. There are seven activities in the management of hazardous and toxic waste but this hospital only carry out two steps, such as collection and storage activities. Some of their doing in collection and storage activities was still not accordance with the regulations.
Comparison Analysis of Portfolio Using Markowitz Model and Single Index Model: Case in Jakarta Islamic Index Tri Yuwono; Dadan Ramdhani
Journal of Multidisciplinary Academic Vol 1, No 1 (2017): Science, Engineering and Social Science Series
Publisher : Penerbit Kemala Indonesia

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Abstract

The aim of this research are to establish the optimal portfolio of stocks listed on the Jakarta Islamic Index in Indonesia Stock Exchange in order to observe and measure their performance potential as a financial investment instrument for the people to invest in the capital market in Indonesia. Furthermore, this study offers a better choice in the decision making process in selecting the optimal portfolio of stocks listed on the Jakarta Islamic Index in Indonesia Stock Exchange using the modern theory of portfolio formation markowitz model and single index model. The sample used in this study is a company that always appear in the announcement of changes to the composition of stocks in the Jakarta Islamic Index in Indonesia Stock Exchange during the period 2010-2016. The sampling method used in this research using purposive sampling method. The analysis method used in this study using wilcoxon test with statistical software. The results showed that there was no significant difference between the level of return earned by using markowitz model and single index model, and the level of return earned by using markowitz model and single index model is not higher than the risk-free asset return.

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