Publication Search

This research uses a quantitative approach with the help of Python to solve infimum and supremum problems involving measurements, calculations and data analysis to draw conclusions. This research process consists of several stages: problem identification, modeling a set of numbers or functions, and implementing algorithms in Python to calculate the infimum and supremum. The calculation results are compared with manual analytical solutions to ensure accuracy and efficient use of Python. Sets as a basic concept in programming allow organizing data and logical operations more efficiently. These findings show that Python is not only effective in calculating supremum and infimum, but also speeds up the solution process compared to manual methods. The results of the program execution show that the analyzed set has an infimum fan supremum which is in accordance with the theory, where set 1 has an infimum of 2, set 2 has a supremum of 5, and set 3 has an infimum of 1 and a supremum of 4.

Distance learning has become a supporting tool in education in the digital era. Improving the quality of education requires changing new, more efficient learning methods by designing E-Learning applications for learning media. The Manado State Christian Institute already has an Information System platform which aims to facilitate student registration and administration. To improve the quality of education, an E-Learning application is needed. The aim of this research is to design an E-Learning application as a distance learning platform that facilitates communication between students and lecturers in accessing material, assignments, challenges and exams. System design is carried out using Unified Modeling Language (UML) based modeling. Based on the results of usability testing, a score of 95.2% was obtained, which means that the E-Learning application is very good to use based on the experience of 5 respondents representing the Manado State Christian Institute.

This research aims to test the effect brand image, advertising and product quality on customer loyalty with brand community as an intervening variable. The study was conducted on AREI members outdoor community in East Priangan. Sampling is carried out using techniques propotioned stratified random sampling, with a sample size of 250, spread across store Tasikmalaya and Garut. The research instrument used was a questionnaire with a Likert scale. The analysis technique used is structural equation modeling with the smartPLS application. The results of this research show that 1) Brand image, advertising, products, brand community and customer loyalty, in excellent condition; 2) Brand image, advertising and product quality have a positive and significant effect on brand community; 3) Brand image, advertising and product quality have a positive and significant effect on customer loyalty; 4) Brand community positive and significant effect on customer loyalty; 5) Brand image, advertising and product quality influence customer loyalty through the brand community.  

This study aims to examine the effect of leadership style, compensation and work environment on performance with motivation as an intervening variable. The study was conducted on employees at the Branch Collection Unit & Recovery Asset Sales of PT Bank Tabungan Negara, West Java Regional Office. Sampling was carried out using saturated sampling technique, with a total sample size of 123 samples, which were spread across 10 offices of PT. Bank Tabungan Negara, West Java Regional Office. The research instrument used was a questionnaire with a Likert scale. The analysis technique used structural equation modeling with the smartPLS application. The results of this study indicate that, leadership style, compensation, work environment, motivation and performance, in very good condition. Leadership style, compensation and work environment have a positive and significant effect on motivation. Leadership style, compensation and work environment have a positive and significant effect on performance. Motivation has a positive and significant effect on performance. Leadership style, compensation and work environment affect performance with motivation as an intervening variable.  

PT XYZ, which aims to optimize the production process of Airbus A350 aircraft wing components. The background of this research focuses on the importance of efficiency and effectiveness in the aviation industry, where each component must be produced to high standards to ensure aircraft safety and performance. In order to achieve this goal, the author applies several methods for completing the task, including system modeling and Interpretive Structural Modeling (ISM). This method allows for in-depth analysis of the structure and relationships between elements in the production system. Data processing is carried out through four main stages: model concept design, data collection, analysis, and evaluation. The raw data used includes the company layout and wing component production flow. The results of this data processing provide significant insights into potential improvements in the existing production system, as well as recommendations for improving operational efficiency. Thus, this report not only contributes to the development of knowledge in the field of systems engineering, but also provides practical advice for PT XYZ to improve their production performance.

The increasing number of businesses using e-commerce in Bali, the use of e-wallets like OVO is expected to integrate technology into daily life and drive the growth of the digital economy in the region. Factors indicated to influence the intention to reuse include satisfaction, perceived usefulness, and perceived ease of use. This study employs an associative research design with causal relationships and was conducted in Badung Regency. The sample size consisted of 105 respondents. Data was collected through questionnaires and then analyzed using descriptive analysis and structural equation modeling (SEM) based on PLS. The results showed that perceived usefulness has a positive and significant influence on the intention to reuse. Perceived ease of use also has a positive and significant impact on the intention to reuse. Perceived usefulness has a positive and significant effect on satisfaction. Perceived ease of use has a positive and significant effect on satisfaction. Satisfaction has a positive and significant influence on the intention to reuse. Satisfaction significantly mediates the indirect effect of perceived ease of use on the intention to reuse. It also significantly mediates the relationship between perceived usefulness and the intention to reuse. These findings underscore the importance of usefulness, ease of use, and satisfaction in increasing users' intention to continue using the technology. OVO e-wallet managers should focus on enhancing the benefits, ease of use, and user experience to improve user retention and loyalty.    

For a company to achieve its goals, the human resource aspect must be competitive. Human resource performance is the spearhead of this achievement. Therefore, the company must provide work comfort to employees so that their performance is optimal and maximum. The purpose of this study aims to analyse the extent of the effects of job increments and remuneration on job performance through job comfort. The effect of job increments and remuneration on job comfort directly or indirectly through moderating variables. The population in this study totalled 136 people. With 120 respondents taking the sempel. The sampling technique uses proportional random sampling method. The data analysis method uses Structural Equation Modeling (SEM). The results of the study are job increments affect job comfort, remuneration affects job comfort, job increments affect job performance, remuneration affects job performance, job comfort affects job performance, job increments have no effect on job performance through job comfort, remuneration affects job performance through job comfort.

This research aims to examine the influence of service quality, Atmosphere Store, bundling product and point of purchase to Impulsive buying through Corporate image as an intervening variable. The study was conducted on Alfamart Members in the North Ciamis Region. Sampling is carried out using techniques propotioned stratified random sampling, with a total sample size of 210 samples, spread across 16 Alfamart stores in the North Ciamis Region. The research instrument used was a questionnaire with a Likert scale. The analysis technique used is structural equation modeling with the smartPLS application. The results of this research show that, 1) Service quality is in good condition, whereas Atmosphere Store, Bundling product, Point of purchase, Corporate image and Impulsive buying in very good condition; 2) Quality of service, Atmosphere Store, Bundling product and Point of purchase positive and significant effect on Corporate image; 3) Quality of service, Atmosphere Store, Bundling product and Point of purchase positive and significant effect on Impulsive buying; 4) Corporate image positive and significant effect on Impulsive buying; 5) Quality of service, Atmosphere Store, Bundling product and Point of purchase influence on Impulsive buying through Corporate image as an intervening variable.  

Telkomsel Orbit is a product that provides an internet network that can be used anytime and anywhere, thereby attracting consumer interest. The company continues to market and develop this product so that it can continue to compete with other similar products, including by implementing several marketing methods which will be studied in this research. This study seeks to examine the impact of the independent variables, namely (X1) Personal Selling, (X2) Social Media Marketing and (X3) Sales Promotion on the dependent variable (Y1) Purchasing Decisions. This study uses quantitative data collected based on filling out questionnaires carried out by 330 respondents who are users of Telkomsel Orbit products in the Central Sumatra Region. Sampling was carried out by purposive sampling. Data analysis was conducted using Structural Equation Modeling (SEM) techniques via the SmartPLS application. Statistical results show that the independent variables, such specifically as (X1) Personal Selling, (X2) Social Media Marketing and (X3) Sales Promotion have a positive and substantial effect on the dependent variable (Y1) Purchase Decision resulting in an R-Square featuring the value of 0.267 or 26.7%. The Telkomsel Orbit marketing team is expected to continue to improve and evaluate the application of personal selling, social media marketing and sales promotions to influence consumer decisions in choosing Telkomsel Orbit products. The application of personal selling is considered the most effective in this research, so it is hoped that optimization of human resources and abilities in forming relationships with consumers will continue to be carried out. Likewise, sales promotions must be carried out more massively to be able to continue to compete with other competitors, because the best and most attractive price offers or sales promotion methods will be superior in influencing purchasing decisions. Meanwhile, social media marketing continues to be optimized, especially facing the digital world, where information is disseminated via the internet or social media, so content is needed with information content that can attract consumer interest in products.

TK Negeri Sendangmulyo Semarang is an international level state kindergarten in Semarang locates in Jalan Klipang Raya Sendangmulyo Tembalang, Semarang 50272. Student pick-up system works like student pick-up in general. Parents come to school and directly pick their sons or daughters. But under parents’ circumstance, parents may be able or unable to pick their kids. If parents unable to pick-up their kids, teachers need to know the person actually pick the students whether family member or the parents trustee. For that reason, Identity Recognition System for Kindergarten Student Pick-Up using QR Code is needed. In general, developed system use QR Code. Research method used by researcher among other data collection method such as literature study, field study by observation and interview, also previous research study. While development method in the Identity Recognition System for Kindergarten Student Pick-Up using QR Code use System Development Life Cycle coupled with Unified Modeling Language for modeling. By implementing the system, teachers may control and watch kindergarten student pick-up system. The result is new kindergarten student pick-up system where student may get picked-up if the person brings ID-Card contains QR Code with student data

This study, researcher variables, Job Placement, Work Environment, Competency, Job Satisfaction and Work Effectiveness. Data analysis with parametric and non-parametric statistics using SEM-PLS (Structural Equation Modeling-Partial Least Square) Data analysis with parametric and non-parametric statistics regarding research variables, calibration test / pilot test, validity and reliability, Outer model and inner model analysis , as well as a discussion of the results of hypothesis testing or Path Analysis Path. This study uses path analysis to examine the pattern of relationships that reveal the effect of a variable or set of variables on other variables, both direct and indirect. The calculation of the path coefficient in this study is assisted by SmartPLS Ver 4.0 2022. The results of this study indicate a direct influence that Job Placement, Work Environment and Competence variables have a significant positive influence on Job Satisfaction. Job satisfaction has a positive but insignificant influence. Job Placement and competence have a significant positive influence on Work Effectiveness. Work Environment has a positive but insignificant influence on Work Effectiveness. The results of the study for indirect influence where Job Satisfaction has a positive and insignificant influence in mediating the influence of Job Placement, Work Environment and Competence on Work Effectiveness.  

Nowadays, the utilization of a Web-based Hospital Management Information System has been implemented in Raja Ahmad Tabib Hospital of Pulau Riau Province, which not only has an impact on patient services but can also have an impact on the effectiveness of employee work in serving patients in the hospital, in order of study aims to determine the effectiveness of work through Web-based HMIS (SIMRS) by determining the Quality of Information, Organizational Culture and Digital Competence. This study will conduct data analysis through SEM-PLS (Structural Equation Modeling-Partial Least Square) software, which the test conducted by the researcher uses path analysis to test the pattern of relationships that can reveal the influence of variables or a set of variables on other variables, both direct and indirect influences. Based on the results of the research that has been conducted, the researcher found that there is a positive influence between Organizational Culture both on HMIS and on work effectiveness and organizational culture has a significant determination of work effectiveness through the utilization of Web-based HMIS. On the other hand, the quality of information and digital competence are not significant to Web-Based HMIS, although both are significant to work effectiveness. However, the determination of information quality and digital competence does not have an indirect relationship to work effectiveness through Web-based HMIS.    

This Article Review for aims to analyze the effectiveness of dynamic programming as a tool to improve robust queue management strategies in service systems. Dynamic programming is an optimization technique used to determine the optimal solution to problems that can be broken down into smaller problems. Explore how dynamic programming can be used to improve queue management strategies, including reducing wait times, improving resource allocation, and increasing system efficiency. The research is based on an analytical model that combines dynamic programming with row theory Immune-waiting, includes mathematical and experimental analysis to evaluate the effectiveness of these strategies in different applied contexts. The research aims to provide practical insights on how dynamic programming can be used to improve the performance of SOA systems and to provide recommendations for improving management strategies.

This study aims to analyze how the influence of transformational leadership, self-efficacy and career development on employee performance with achievement motivation as an intervening variable in female officials in the Riau Islands Provincial Government. The analysis used in this research is parametric and non-parametric statistics using SEM-PLS (Structural Equation Modeling-Partial Least Square). Data analysis with parametric and non-parametric statistics regarding research variables, calibration tests / pilot tests, validity and reliability, Outer model and inner model analysis, as well as discussion of the results of hypothesis testing or Path Analysis. This study uses path analysis to examine relationship patterns that reveal the effect of a variable or set of variables on other variables, both direct and indirect effects. The calculation of the path coefficient in this study was assisted by SmartPLS. The test results in this study found that Transformational Leadership and Career Development had no significant effect on the Performance of Women Officials in the Riau Islands Provincial Government, while Self Efficacy had a significant effect on the Performance of Women Officials in the Riau Islands Provincial Government, Career Development and Transformational Leadership had a significant effect on the Performance of Women Officials in the Riau Islands Provincial Government Transformational Leadership, Self Efficacy and Career Development have a significant effect on Performance with Achievement Motivation as an Intervening Variable on Women Officials in the Riau Islands Provincial Government.  

PT Mass Rapid Transit Jakarta operates a mass transportation system from Lebak Bulus Station to Bundaran HI. One of the traction substations is located in Cipete Raya, with a voltage rating of 20kV/1.2kV. A critical piece of equipment in this substation is the traction transformer, with a capacity of 4850 kVA/2x2500 kVA. The purpose of this study is to predict the service life of the Cipete Raya traction transformer based on temperature and load using the linear regression method. This study employs direct observation, analyzing load data from traction transformers 1 and 2 at Cipete Raya from January 2022 to June 2024, along with transformer temperature measurements. Secondary data include the technical specifications of the Cipete Raya traction transformer. The linear regression analysis for transformer 1 yields the equation y = 687.42 + 11.97x, indicating a 5.75% annual increase over the next 5 years, with a very strong correlation coefficient of R = 0.919. For transformer 2, the equation is y = 815.4543 + 6.488x, showing a 3% annual increase, with a strong correlation coefficient of R = 0.814. Based on the transformer aging calculations for June 2024, Transformer 1 has a per unit aging value (V) of 0.0014 and an estimated service life (n) of 407.689 years, while Transformer 2 has a V of 0.0012 and an estimated service life of 496.77 years. The aging model evaluation using MAPE shows that the prediction accuracy for transformers 1 and 2 is 6% and 3%, respectively, indicating excellent modeling performance.    

The seminar "Educating Children with Exemplary Behavior and Love," held on August 11, 2024, at the Community Center RW 05, Kelurahan Sangiang Jaya, aimed to equip parents with knowledge about the importance of role modeling and affection in child education. The methods used included a presentation by a speaker and a question-and-answer session. The results of the seminar showed that consistent application of role modeling and affection can improve the parent-child relationship and enhance parenting effectiveness. The implications of these results highlight the need for parents to integrate these principles into their daily lives to support optimal child development. Participants explored the importance of being a good example in daily life and how role modeling can shape children’s character and behavior. Additionally, the seminar discussed how to create a loving environment that provides emotional support for children's psychological and social development. The seminar aimed to help parents build healthy and harmonious relationships with their children and prepare them to become empathetic and responsible individuals.

This study aims to determine the effect of perceived organizational support and work-life balance on employee engagement with mediation of job satisfaction at PT Kurnia Ciptamoda Gemilang Kebayoran Lama South Jakarta. The sample in this study were 65 employees support unit of PT Kurnia Ciptamoda Gemilang. Data was collected through a questionnaire using google form. The sampling technique used in this study is the saturated sampling method (total sampling). Data analysis in this study used structural equation modeling (SEM) with SmartPLS version 4.1. Hypothesis testing with the PLS approach, carried out in two stages, namely testing the outer model and inner model. The results of this study indicate that Perceived Organizational Support has a significant effect on Employee Engagement while the Work-Life Balance and Job Satisfaction variables have an insignificant effect on Employee Engagement.

Breastfeeding technique is a factor that affects milk production, wrong breastfeeding technique will cause problems in breastfeeding such as sore nipples, less milk production. This is caused by a lack of knowledge and attitudes of mothers about proper breastfeeding techniques. To increase the knowledge and attitudes of mothers, it is necessary to provide health education about breastfeeding techniques using a modeling approach. The purpose of this study was to analyze the effectiveness of health education with a modeling approach to the knowledge and attitudes of postpartum mothers regarding breastfeeding techniques. The research design is a Quasi-Experimental Pre-Test-Post-Test. The sample in this study were 30 nursing mothers aged 0-6 months using the Total Sampling technique. Data were analyzed using the Wilcoxon test. The results of the study obtained a p value of 0.000 so that the modeling approach was effective in increasing the knowledge and attitudes of postpartum mothers regarding breastfeeding techniques. The conclusion of this study is the effectiveness of health education with a modeling approach to increasing the knowledge and attitudes of postpartum mothers regarding breastfeeding techniques in Panggungjati Village.  

The North Sumatra Aceh National Sports Week (PON) which will be held in September 2024 in Papu, North Sumatra has drawn many pros and cons from the public. This topic allows the public to provide criticism, suggestions and opinions regarding the 2024 North Sumatra Aceh PON. Instagram is a popular social media for conveying public opinion. The sentiment analysis process can find and resolve problems based on public opinion on social media such as Instagram. The classification method used in this research is the Naïve Bayes Classifier. Datasets can be obtained from the data crawling process using the Google Chrome extension: IGCommentExport. The data is labeled positive, neutral, or negative. The results of the labeling process showed 770 negative data, 256 neutral data and 920 positive data. Then pre-processing is carried out on the data that has been previously labeled, and a word weighting process is also carried out using TF-IDF. After that, modeling was carried out using the Naïve Bayes Classifier and the final process was evaluation-testing. The high accuracy results from the fourth experiment which compared 90% of the training data with 10% of the testing data resulted in an accuracy of 75%. Meanwhile, the sentiment test results show that positive sentiment is more numerous than negative sentiment and neutral sentiment.

This research raises the issue of the phenomenon of tax evasion amidst the increase in tax revenue realization in the last three years. This study aims to determine the effect of money ethics and tax morale on student perceptions of tax evasion with hedonism as a moderating variable. The object of this research is the cadre of the Mojokerto National Student Movement (GMNI) organization. This study uses a quantitative approach with primary data sources and uses a survey method through google form with a Likert scale measuring instrument. The population in this study were 115 cadres of the Mojokerto GMNI organization. The sampling technique used purposive sampling to get 65 respondents. The data analysis technique uses descriptive statistical analysis with the Structural Equation Modeling- Partial Least Square (SEM-PLS) method. The test tool used is SmartPLS software version 4.1.0.2 with outer model and inner model. The results showed that money ethics has a positive and significant effect on student perceptions of tax evasion, tax morale has a negative and significant effect on student perceptions of tax evasion, and hedonism is able to moderate the influence of money ethics and tax morale on student perceptions of tax evasion.