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INDONESIA
Jurnal Scientia
Published by SEAN INSTITUTE
ISSN : 23020059     EISSN : 27237486     DOI : -
Core Subject : Education,
Education Mathematics
Scientific Journal is a publication by Sean Institute, which is devoted to the field of education with the topic of Learning Effectiveness studies, Analysis of Learning Influences, Application of Learning Models and the development of instructional media; we also invite the teachers, researchers, and students to send the writings. issued two within one year, namely until February and August.
Arjuna Subject : Umum - Umum
Articles 1,534 Documents
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An Analysed Design Of Charger Automatic Battery Based On Thyristor Hafiz Al Hakim Nasution; Zulkarnain Lubis; Beni Satria
Jurnal Scientia Vol. 13 No. 03 (2024): Education and Sosial science, June - August 2024
Publisher : Sean Institute

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Abstract

Lead-acid batteries (batteries) are one of the most widely used resource components. Starting from small capacity for motorbikes, uninterruptible power supplies (UPS), up to hundreds of amperes for industrial use. When used, this battery needs to be recharged after use to obtain a stable voltage and current. In the charging process there are many ways that can be done, from rectifiers without filters, using filters to automatic ones (can detect the battery voltage level and turn itself off if the battery is fully charged). Automatic Battery Charger (ABC) is an electronic device designed to charge batteries automatically with high efficiency. One of the key components in ABC is the thyristor, a power control semiconductor that allows fast and safe battery charging. This research aims to design and implement ABC using a thyristor as a switch to control battery charging current. The methods used in this research include analyzing system requirements, designing electronic circuit schemes, selecting appropriate components, making and testing prototypes, and evaluating system performance. The designed ABC has features such as battery voltage detection to stop charging when the battery reaches full level, protection against overcurrent, and an LED indicator to display charging status. Test results show that ABC with thyristors can charge batteries with high efficiency and safely. The system is able to charge the battery quickly without producing excess heat which can damage the battery. In addition, this ABC is also equipped with security features that ensure safe and reliable operation. This research contributes to the development of more efficient and environmentally friendly battery charging technology. Implementing ABC with a thyristor as a battery charging current control switch can be an effective and energy-saving solution for automatic battery charging.
The Influence Of Leadership Style And Work Motivation On Employee Performance In The Banten Regional Office Of The Ministry Of Law And Human Rights Amarulla, Emiel
Jurnal Scientia Vol. 13 No. 03 (2024): Education and Sosial science, June - August 2024
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/scientia.v13i03.2550

Abstract

This research aims to find out 1) To determine the magnitude of the influence of leadership style on employee performance at the Banten Regional Office of the Ministry of Law and Human Rights. 2) To determine the magnitude of the influence of work motivation on employee performance at the Banten Regional Office of the Ministry of Law and Human Rights. 3) To determine the magnitude of the influence of leadership style and work motivation together on employee performance at the Banten Regional Office of the Ministry of Law and Human Rights. The research method used is a quantitative method. The population in this study were employees of the Banten Regional Office of the Ministry of Law and Human Rights. The technique used was total sampling, the population was 97 people, and the sample size was 133 people. Testing in this research uses SPSS. The research results show that 1) there is a significant influence between Leadership Style on Employee Performance in the Banten Regional Office of the Ministry of Law and Human Rights, with a determination of 16.1%. 2) There is no significant influence between Work Motivation on Employee Performance in the Banten Regional Office of the Ministry of Law and Human Rights with a determination of 9.4%. 3) There is an influence of Leadership Style and Work Motivation on Employee Performance in the Banten Regional Office of the Ministry of Law and Human Rights with a determination of 18.3%.
Analysis Of Wireless Energy Transfer Systems By Methods Inductive Resonance Siti Suriyatni; Beni Satria; Amani Darma Tarigan
Jurnal Scientia Vol. 13 No. 03 (2024): Education and Sosial science, June - August 2024
Publisher : Sean Institute

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Abstract

This research investigates wireless energy transfer techniques using the inductive resonance method. This method utilizes resonance between the sending and receiving coils to increase energy transfer efficiency. The main focus is the analysis of resonance characteristics that affect energy transfer efficiency, such as resonance frequency, coil quality, and distance between transmitter and receiver. This research uses an analytical approach to measure key parameters such as voltage and current on both sides of the transfer. The collected data is analyzed to understand the relationship between resonance parameters and overall system efficiency. The analysis results will be used to validate the mathematical model developed to optimize the system design. This research is expected to provide valuable insights to increase efficiency and transfer distance in the application of inductive resonance-based wireless energy transfer technology.
An Analysis Of Power Transformer Performance Reliability On The Effect Transient Recovery Voltage Arnanda Putra; Solly Aryza; Zuraidah Tharo
Jurnal Scientia Vol. 13 No. 03 (2024): Education and Sosial science, June - August 2024
Publisher : Sean Institute

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Abstract

Technologies a power transformer is a crucial component in an electric power system that functions to change electric voltage from one level to another. Reliable transformer performance is essential to ensure the continuity of electricity supply and prevent significant losses. One phenomenon that can affect transformer reliability is Transient Recovery Voltage (TRV). This paper described the reliability of power transformer performance against the influence of TRV through simulations and experimental measurements. The research methodology includes literature review, mathematical modeling, simulation using electric power system analysis software, and laboratory testing. The research results show that TRV has a significant influence on transformer reliability, especially under conditions of major disturbances. Recommendations for mitigating the impact of TRV include the use of additional protective devices such as surge arresters and improving the quality of transformer insulation. By understanding the influence of TRV on transformer performance, it is expected to increase the reliability and operational lifespan of power transformers, as well as reduce the risk of economic losses due to transformer damage. This research makes an important contribution to the development of protection and maintenance techniques for power transformers in modern electric power systems.
The Influence Of Spirit, Leadership Style, And Ethic On Performance Employees Bank BRI Medan Fitra Arlina Nasution
Jurnal Scientia Vol. 13 No. 03 (2024): Education and Sosial science, June - August 2024
Publisher : Sean Institute

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Abstract

The impact of work enthusiasm, leadership style, and work ethic on the performance of employees at PT Bank Rakyat Indonesia, Medan Branch. This research aims to determine and analyze the influence of work enthusiasm, leadership style, and work ethic on em-ployee performance. The research uses a quantitative approach and is classified as ex-planatory research. The study was conducted at the PT Bank Rakyat Indonesia Medan Branch office. The population includes all permanent employees at this branch, totaling 64 employees. To ensure a representative sample, the research included the entire popu-lation, resulting in 64 respondents. Data analysis was performed using Descriptive Anal-ysis and Regression Analysis. The results indicate that work enthusiasm, on its own, does not significantly affect employee performance. However, both leadership style and work ethic significantly impact employee performance. Collectively, work enthusiasm, leadership style, and work ethic have a significant effect on employee performance.
Analysis Of The Implementation Of Health Center Independence (Case Study On Health Center Bangkonol Koroncong District Pandeglang Regency) Hermawan, Yudi; Agus Lukman Hakim
Jurnal Scientia Vol. 13 No. 03 (2024): Education and Sosial science, June - August 2024
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/scientia.v13i03.2554

Abstract

The existence of the BLUD policy has brought major changes to all UPT Health Center in the Pandeglang Regency area, including UPT BLUD Health Center Bangkonol. However, in its implementation, the Bangkonol Community Health Center, after being declared a BLUD, experienced difficulties in implementing the BLUD policy, including experiencing difficulties in the independence of the Community Health Center, especially in financial management. The BLUD at the Bangkonol Community Health Center can be said to be not optimal, there are many obstacles experienced, including human resources which are still lacking in quality and quantity. Departing from this, the researcher studied using descriptive qualitative research methods with case studies. The results of this research are discussed using the theory from Mahmudi and Masnah that to find out the implementation of the independence of BLUD Community Health Centers can be done through financial independence patterns including instructive patterns, consultative patterns, participatory patterns and delegative patterns, Community Health Center Services and Human Resource Performance. The research results show that from several indicators it was found that the UPT BLUD of the Bangkonol Community Health Center could not be said to have complete independence, seen from the first indicator that the Bangkonol Community Health Center was independent in managing its finances but was found not to be confident in managing and making e-BLUD-based financial reporting. So it was found that there was still interference from the government in financial reporting using the eBLUD application. Furthermore, in the service indicators there are several patient complaints that the service is less than optimal and slow. The next indicator regarding human resources is that there are many weaknesses in the quality and quantity of human resources which cause the implementation of the independence of the Bangkonol Health Center after becoming a BLUD to be not optimal.
An Increasing Growth Of Oil Palm Plants Based A Mixture Nitrogen And Potassium Chemicals Asmara Sari Nasution; Efi Said Ali
Jurnal Scientia Vol. 13 No. 03 (2024): Education and Sosial science, June - August 2024
Publisher : Sean Institute

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Abstract

This research aims to test the concentration of POC Nitrogen and POC Potassium on the growth of oil palm plant seeds (Elaeis guineensis Jacq). The method used in this research was a Randomized Group Design (RAK) which consisted of 2 treatment factors. The first treatment is the POC Nitrogen Concentration Test which consists of N0=Control, N1= 1%, N2= 2%, N3= 3%. The second treatment is the POC Potassium Concentration Test K0=Control, K1=1%, K2=2% and K3=3%. The parameters observed were plant height (cm), number of leaves (strands), leaf width (cm) and stem diameter (cm). The research results showed that the POC Nitrogen Concentration Test had a significant effect on the parameters of plant height (cm), number of leaves (cm) and leaf width (cm) but had no significant effect on the stem diameter parameter (cm). In the POC Potassium Concentration Test, it showed a real influence on the stem diameter parameter (cm) but an insignificant effect on the parameters of plant height (cm), number of leaves (strands) and leaf area (cm). The interaction between the POC Nitrogen and POC Potassium Concentration Tests showed unreal results for each observation parameter.
An Increasing Sweet Corn Production With Hybrid Compost Iwan Hasrizart
Jurnal Scientia Vol. 13 No. 03 (2024): Education and Sosial science, June - August 2024
Publisher : Sean Institute

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Abstract

This research aims to determine the response of giving vegetable compost and cow urine to the growth and production of sweet corn (Zea mays L). This research was conducted on Jalan Kelambir V, Hamparan Perak District, Deli Serdang Regency. The research method used was a factorial Randomized Group Design (RAK) with 2 treatments. The first treatment is vegetable compost (K) consisting of 4 levels of enrichment, namely K0= 0 kg/ plot, K1= 1 kg/ plot, K2= 2 kg/ plot, K3= 3 kg/ plot. And the second treatment, namely cow urine (U), consists of 4 treatment levels, namely U0= 0 liter/plot, U1= 1 liter/plot, U2= 2 liters/plot, U3 = 3 liters/plot. The parameters observed were stem diameter (mm), leaf area (cm), fruit length per sample (g), production per sample (g), and production per plot (g). The results of the treatment of giving vegetable compost fertilizer had no significant effect on the parameters, namely stem diameter (mm), leaf area (cm), production per sample (g), and production per plot (g), but had a significant effect on fruit length per sample (g). Meanwhile, cow urine had no significant effect on stem (mm), leaf area (cm), fruit length per sample (g), production per sample (g), and production per plot (g). The interaction between the application of vegetable compost fertilizer and cow urine had no significant effect on stem (mm), leaf area (cm), fruit length per sample (g), production per sample (g), and production per plot (g).
The Influence Of External Factors And Internal Factors On Stock Prices In The Property Sector For The 2013-2023 Period On The Indonesian Stock Exchange I Putu Risky Dharma Putra Tenaya; Ign Oka Widana; Gunardi Endro
Jurnal Scientia Vol. 13 No. 03 (2024): Education and Sosial science, June - August 2024
Publisher : Sean Institute

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Abstract

This study analyzes the effect of external factors, such as interest rates, property capitalization value, and house price index, as well as internal factors such as the value of DER (Debt Equity Ratio), ROA (Return on Assets), and NPM (Net Profit Margin), on the price of property stocks on the Indonesia Stock Exchange (IDX) during the period 2013-2023. In this study, the population in this study were property stocks totaling 85 issuers of shares that were sloping on the Indonesia Stock Exchange. And in this study to determine the sample to be used, the researchers used the simple random sampling method. The method in this study uses quantitative methods with simple random sampling techniques. In this case the sample to be used is as many as 20 samples of property stocks listed on the IDX for the period 2013-2023. The data used is secondary data in the form of financial statements. the analysis used is descriptive statistical analysis technique, time series method, multiple linear regression analysis, classical assumption test, Multivariate Test using SPSS. The results showed, ROA, DER, house price index and interest rates had a positive and significant effect on property stock prices for the period 2013-2023 while the capitalization value of the property had no significant effect on stock prices. The negative coefficient direction explains that an increase in market capitalization will result in a decrease in stock prices on the IDX for the 2013-2023 period. The results of this study show an Rsquare value of 0.580 or 58% of the influence of the independent variable (x) on the dependent variable (y) while 42% of the stock price can be explained by other variables. The implication is that investors and market participants can consider information about relevant external and internal factors in the property market. This research provides important contributions and contributions in understanding the dynamics of the property stock market in Indonesia and can be a reference for further researchers in this field.
The Influence Of Brand Equity, Service Quality And Personal Selling On Customer Loyalty Through Customer Satisfaction (Case Study On Customers Of Garda Oto Motor Vehicle Insurance Products) Septiadi Nugroho; Muchsin Saggaff Shihab
Jurnal Scientia Vol. 13 No. 03 (2024): Education and Sosial science, June - August 2024
Publisher : Sean Institute

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Abstract

The era of globalization promises business opportunities and challenges for all companies, the phenomenon of intense competition will increasingly direct the economic system to a market mechanism that positions marketers to always develop and seize market share. Through Garda Oto motor vehicle insurance products, PT Asuransi Astra Buana (Asuransi Astra) has succeeded in becoming one of the market leaders in the general insurance industry in Indonesia. One of the powerful weapons to achieve this success is to maintain customer satisfaction & loyalty, accompanied by brand equity, service quality and marketing strategies such as personal selling owned by the company. This study aims to determine the effect of brand equity, service quality and personal selling on customer loyalty through customer satisfaction on Garda Oto motor vehicle insurance products. This type of research is quantitative research. The data presented in this study were obtained through questionnaires distributed to 142 respondents. Statistical analysis using the SEM PLS method to test the model and hypothesis. The results of this study indicate that brand equity has a positive and significant effect on customer loyalty, brand equity does not have a positive and significant effect on customer satisfaction, service quality has a positive and significant effect on customer loyalty, service quality has a positive and significant effect on customer satisfaction, personal selling has no positive and significant effect on customer loyalty, personal selling has a positive and significant effect on customer satisfaction, customer satisfaction has a positive and significant effect on customer loyalty, brand equity has no positive and significant effect on customer loyalty through customer satisfaction, service quality has a positive and significant effect on customer loyalty through customer satisfaction and personal selling has a positive and significant effect on customer loyalty through customer satisfaction.

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