Design and Modelling and to Improve Battery Charging Efficiency using Photovoltaics

Azriyenni Azhari Zakri, Almasdi Syahza, Dirman Hanafi, Hanggun Syahadad

In order to make the charging process of the battery easier, it needs to possess a design tool with suitable characteristics. One of the main characteristics of the battery is the State of Charge (SoC) or simply the battery capacity, which is calculated with the help of the initial voltage value. In this process, a 100Wp photovoltaic panel with 12V DC voltage is applied. The method used is experimental and simulation/modeling, and its purpose is to optimize the efficiency of the process of battery charging. Furthermore, the Arduino microcontroller, which functions are a detector during battery charging, was used to determine the current and voltage sensor controller circuit. The voltage and SoC on the battery are automatically monitored via the LCD and on the SD card using the data logger shield module. ICM algorithm used for modeling-simulation in this study is one of the MPPT type used by photovoltaic systems that work at optimum conditions, thereby producing maximum power. The results showed that the battery charging simulation increased by 0.05% every 30 minutes. Furthermore, the simulation validation using Matlab/Simulink is carried out with data in accordance with the prototype design, at an efficiency of 88.37%.

Citation: Zakri, A. A., Syahza, A ., Hanafi, D.,  Syahadad, H., (2020). Design and Modelling and to Improve Battery Charging Efficiency using PhotovoltaicsTechnology Reports of Kansai University, Volume 62, Issue 08, Pages 4667- 4677

Innovation for the Development of Environmentally Friendly Oil Palm Plantation in Indonesia

Almasdi Syahza, Robin, Suwondo, Michiko Hosobuchi

Palm oil is a very common commodity in rural communities of Sumatra and Kalimantan, Indonesia, and the farming activities in these areas create a high multiplier effect and increase welfare. However, the expansion of oil palm areas puts pressure on forest and resources. Also, there is frequent deforestation in high-density forest areas in these communities. Therefore, efforts to implement sustainable development in the plantation sector need to be carried out in order to develop palm in the second cycle. One of these efforts is to implement agroforestry through planting of forestry plants between palm trees. Meanwhile, model for the development of copper meranti (Shorea leprosula Miq.) is a monoculture palm plantation that is integrated with meranti. This has ecological, economic, and social benefits, and it is in accordance with the basic concepts of environmental management. Therefore, planting copper meranti between palm trees has multiple benefits for the community, such as wood production.

Citation: Syahza, A., Robin., Suwondo., Hosobuchi, M., (2020). Innovation for the Development of Environmentally Friendly Oil Palm Plantation in Indonesia. International Symposium of Earth, Energy, Environmental Science, and Sustainable Development, The 1st JESSD Symposium, 28-29 September 2020

Video Presentation

Potential Development of Leading Commodities in Coastal Areas Riau, Indonesia

Almasdi Syahza,  Djaimi Bakce, Mitri Irianti,  Brilliant Asmit

Background and Objective: Most of the Riau Province in Indonesia is part of the community lives on peatlands. The development of plantations has caused income inequality between regions and farmers. The research objective was to examine the potential for accelerating rural economic development through the development of leading commodities in coastal areas. Materials and Methods: The study was conducted through a survey with developmental research. For accurate information performed with the Rapid Rural Appraisal (RRA) method. The main commodities are based on land area, production, and the number of farmers involved in agricultural activities. The potential of superior commodities in terms of farm efficiency and opportunities to create added value for farmers. Results: The development of the agricultural sector especially plantation commodities has caused income inequality between regions and farmers, especially with oil palm, rubber, sago, and coconut farmers. The palm oil commodity has guaranteed market potential. Rubber, sago, and coconut farmers face the monopsony market. The results of the study provide information on the acceleration of economic development in coastal areas through the development of plantation commodities. Conclusion: The results of the study can be taken into consideration for policymakers for community development in coastal areas. Suitable commodities developed in coastal areas are sago, coconut, rubber, and palm oil.

Citation: Syahza, A., Bakce, B., Irianti, M., Asmit, B., (2020). Potential Development of Leading Commodities in Coastal Areas Riau, Indonesia. Journal of Applied Sciences. Volume 20, Number 5. Pages 173-181. http://doi.org/10.3923/jas.2020.173.181

Corporate Governance Mechanism And Financial Performance: Role of Earnings Management

Enni Savitri, Andreas, Almasdi Syahza, Tatang Ary Gumanti, Nik Herda Nik Abdullah

The mechanism of good corporate governance is used to prevent the management of the company from engaging in unethical actions, such as earnings management. It can be an effective way to control management. This study aims to analyze corporate governance, consisting of the size of the board of commissioners, the size of the sharia supervisory board, and the audit committee on financial performance, measured as return on assets (ROA), with earnings management as the mediating variable. The sample used for the study consists of nine Indonesian shariah banks and the period of the analysis is 2013-2017. The results of the path analysis show that the size of the board of commissioners has a negative effect on the company’s ROA. The study also finds that the size of the sharia supervisory board, audit committee and earnings management do not have significant effects on financial performance. Earnings management has a positive mediating role on the relationship between the board of commissioners, the audit committee and ROA. This finding indicates that the existence of the board of commissioners is effective in supervising the management. Thus the mechanism corporate governance can limit the managers’ discretionary behavior and prevent earnings management.

Citation: Savitri, E., Andreas, A., Syahza, A., Gumanti, T. A., Abdullah, N. H. N., (2020). Corporate Governance Mechanism And Financial Performance: Role of Earnings ManagementEntrepreneurship and Sustainability Issues. Volume 7, Number 4, Pages 3395-3409. http://doi.org/10.9770/jesi.2020.7.4(54)

Erosion Control in Sustainable Plantation Development Efforts in Siak Watershed Region, Riau Province, Indonesia

Mitri Irianti, Besri Nasrul, Almasdi Syahza

Background and Objective: The rapid development of agriculture and settlements has led to several land conversion, and one of such affected locations is upstream of the Siak watershed in Riau Province, Indonesia. Land degradation occurs due to soil erosion, which may cause flooding and drought. Therefore, this study aims to analyze the factors causing erosion and determine how to control it. Materials and Methods: The survey method of observing and measuring soil samples, vegetation, and soil conservation techniques applied in each land unit was used. Rainfall data, soil characteristics, slopes, crop management, and soil conservation techniques were collected and analyzed using USLE. Results: The results showed that the erosion in the Siak watershed is relatively high (339 tons/ ha/year). Furthermore, the plant management and soil conservation techniques did not follow the required principles, and the erosion control was determined by improving crop management and soil conservation techniques in an integrated manner at each unit of land. This step was expected to reduce erosion in the Siak watershed. Conclusion: The erosion control in open land areas resulting from clearing need to get top priority. Guidance in the form of counseling and specifically regarding the soil conservation method needs to be carried out earlier and in stages to all landowners.

Citation: Irianti, M., B. Nasrul., A. Syahza., (2020). Erosion Control in Sustainable Plantation Development Efforts in Siak Watershed Region, Riau Province, Indonesia. Asian Journal of Scientific Research. Volume 13, No 4. Pages 259-269. http://doi.org/10.3923/ajsr.2020.259.269

How supply chain moderates the relationship of entrepreneurial orientation, adaptability strategy and government interference with performance?

Enni Savitri, Nik Herda Nik Abdullah, Jamaliah Said, Almasdi Syahza, Musfialdy

The small and medium business sector plays an important role in strengthening the structure of the national economy. This sector is essentially related to the economic life of most Indonesian people. Past studies indicate that the quality of small and medium enterprises in Indonesia facing difficulties to extend their businesses due to several internal problems such as lack of human resources entrepreneurial skill, technology, management, and information. As such, based on the Resource-Based View theory, this study aims to analyze the effect of adaptability strategy, entrepreneurial orientation, and the government policy on the performance of selected small and medium enterprises. Information sharing wide supply chain management significantly and positively inserts moderating effect among the relationship between government policy, adaptability strategy, entrepreneurial orientation, and performance. Based on interviews and questionnaires distributed to 49 small and medium enterprises, this study found adaptability strategy, entrepreneurial orientation, and the government policy affects business performance. This study enriches the current literature by providing contributions and insights to understanding how Resource-Based View theory will affect the business performance of small and medium enterprises in Indonesia.

Citation: Savitri, E., Abdullah, N. H. N., Said, J., Syahza, A., Musfialdy., (2020). How supply chain moderates the relationship of entrepreneurial orientation, adaptability strategy and government interference with performance? International Journal of Supply Chain Management, Vol. 9, No. 4, Pages 355 – 362. https://ojs.excelingtech.co.uk/index.php/IJSCM/article/view/5263