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International Journal of Global Operations Research
Published by Indonesian Operations Research Association
ISSN : 27231747     EISSN : 27221016     DOI : https://doi.org/10.47194/ijgor
Core Subject : Economy, Science, Education, Engineering,
Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Mathematics
International Journal of Global Operations Research (IJGOR) is published 4 times a year and is the flagship journal of the Indonesian Operational Research Association (IORA). It is the aim of IJGOR to present papers which cover the theory, practice, history or methodology of OR. However, since OR is primarily an applied science, it is a major objective of the journal to attract and publish accounts of good, practical case studies. Consequently, papers illustrating applications of OR to real problems are especially welcome. In real applications of OR: forecasting, inventory, investment, location, logistics, maintenance, marketing, packing, purchasing, production, project management, reliability and scheduling. In a wide variety of environments: community OR, education, energy, finance, government, health services, manufacturing industries, mining, sports, and transportation. In technical approaches: decision support systems, expert systems, heuristics, networks, mathematical programming, multicriteria decision methods, problems structuring methods, queues, and simulation. Topics Covered: Computational Intelligence Computing and Information Technologies Continuous and Discrete Optimization Decision Analysis and Decision Support System Applied Operations Research in Education Engineering Management Environment, Energy and Natural Resources Financial Engineering Applied Operations Research inGovernment Heuristics Industrial Engineering Information Management Information Technology Inventory Management Knowledge Management Logistics and Supply Chain Management Maintenance Manufacturing Industries Applied Operations Research in Marketing Engineering Markov Chains Mathematics Actuarial Sciences Military and Homeland Security Networks Operations Management Organizational Behavior Planning and Scheduling Policy Modeling and Public Sector Applied Operations Research inPolitical Science Production Management Applied Operations Research inPsychology Queuing Theory Revenue & Risk Management Services management Simulation Applied Operations Research inSociology Applied Operations Research inSports Statistics Stochastic Models Strategic Management Systems Engineering Telecommunications Transportation And so on
Arjuna Subject : Umum - Umum
Articles 164 Documents
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The Influence of Capital Adequacy Ratio, Loan to Deposit Ratio, and Net Interest Margin on Return on Asset at Bank Jabar Banten Sari, Widya; Putri, Nur Azizah Hasna; Apriani, Dina
International Journal of Global Operations Research Vol. 4 No. 2 (2023): International Journal of Global Operations Research (IJGOR), May 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i2.220

Abstract

Based on the results of observations, this research is motivated by the fluctuating phenomenon in these ratios and the discrepancy with the theory put forward by experts. This study aims to find out how the effect of CAR on ROA at Bank BJB, find out how the influence of LDR on ROA at Bank BJB, find out how the influence of NIM on ROA at Bank BJB, and find out how the influence of CAR, LDR, and NIM simultaneously on ROA at Bank BJB. The object of research in this thesis is the ratio of CAR, LDR, and NIM to ROA. The type of research is quantitative with an associative approach with secondary data types and uses data collection techniques in the form of documentation and literature study. While taking the sample using purposive sampling technique. The population is Bank BJB quarterly financial report data for the 2017-2021 period. The results of the study show that there is no significant and negative effect between CAR on ROA at Bank BJB, there is no significant effect between LDR on ROA at Bank BJB and in a negative direction, but there is a significant effect between NIM on ROA at Bank BJB.  Simultaneously there is no effect between CAR, LDR, and NIM on ROA at Bank BJB.
The influence of Total Quality Management and Reward on Employee Performance at Bank BJB Sumedang Branch Office Nasution, Ade Iskandar; Dewi, Pebrianti Kamisha; Puspitasari, Melina Dwi
International Journal of Global Operations Research Vol. 4 No. 2 (2023): International Journal of Global Operations Research (IJGOR), May 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i2.221

Abstract

This study aims to determine how the effect of Total Quality Management and Reward on employee performance at Bank BJB Sumedang Branch Office either partially or simultaneously.The object of research on employee performance reports at Bank BJB Sumedang Branch Office.  The type of research is quantitative associative with primary data type and uses data collection techniques in the form of observation, interviews, questionnaires, and literature study.  While the sampling technique is Non Probability Sampling with purposive sampling.  The population is all employees at Bank BJB Sumedang Branch Office, totaling 110 people with a sample of 86 people.The results showed that there was a significant effect on the Total Quality Management variable on Employee Performance of 57.5% at Bank BJB Sumedang Branch Office, this can be seen from tcount of 2,290 > 1,989 with a significant value of 0.025 < 0.05.  There is a significant effect on the Reward variable on Employee Performance of 23.7% at Bank BJB Sumedang Branch Office, this can be seen from tcount of 2,076 > 1,989 with a significant value of 0.041 < 0.05.  There is a simultaneous effect on the Total Quality Management and Reward variables on Employee Performance of 58.1% at Bank BJB Sumedang Branch Office, this can be seen from the Fcount of 7.214 > 2.71 and a significant value of 0.002 < 0.05, this indicates that  independent variables jointly affect the dependent variable.
Analysis Of The Influence Of Delivery Service Quality On Customer Satisfaction JNE Trucking Sub Agent Klaten Ekowati, Maria Atik Sunarti; Rumekso, Ayub Widhi
International Journal of Global Operations Research Vol. 4 No. 2 (2023): International Journal of Global Operations Research (IJGOR), May 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i2.194

Abstract

The purpose of this study is to analyze the effect of the quality of freight forwarding services on customer satisfaction by using five variables, namely Tangible, Reliability, Responsiveness, Assurance, Empathy, and the variable customer satisfaction as a dependent variable. The population is all JNE customers, sampling on 30 respondents, using non-probability sampling technique and accidental sampling approach, anyone who is met can sample. The method used is descriptive statistics, multiple linear regression, validity and reliability test, T test, F test and the determinant coefficient (R2). The results of the analysis, research indicators are valid and reliable, does not happen heteroscedasticity seta normally distributed.
Effectiveness of Nebulization Therapy with Chest Physiotherapy After Nebulization on Airway Clearance in Children with Bronchopneumonia M, Denni Fransiska Helena; Nurhayati, Siti; Khotimah, Nur Intan Hayati Husnul
International Journal of Global Operations Research Vol. 4 No. 2 (2023): International Journal of Global Operations Research (IJGOR), May 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i2.215

Abstract

Bronchopneumonia accounts for 15% of all deaths of children under five. The primary nursing problem of bronchopneumonia patients is ineffective airway clearance which can lead to more severe problems such as shortness of breath and even death. Management of airway ineffectiveness can be done by nebulization and corticosteroids, chest physiotherapy, suctioning and effective coughing. Nebulization accompanied by chest physiotherapy can remove secretions or phlegm effectively. This study aims to analyze the differences in airway clearance before and after nebulization and chest physiotherapy in the control and intervention groups in bronchopneumonia children. The research design used is Quasi-Experimental. A sample of 36 respondents with bronchopneumonia children was divided into two groups, namely control and intervention groups, which were obtained by consecutive sampling. Data collection techniques used observation sheets. The data analysis used in this study is the Mann-Whitney Test. The results showed that before chest physiotherapy after nebulization, all respondents had ineffective airway clearance (100%) in both the intervention and control groups. After chest physiotherapy after nebulization, almost half of the respondents in the intervention group had adequate airway clearance (44.4%). In contrast, in the control group, a small proportion of respondents had adequate airway clearance (16.7%). The analysis showed a p-value of 0.001, meaning there is a significant difference in airway clearance after being given nebulization and chest physiotherapy interventions in the intervention and control groups. Researchers hope that in future studies, airway clearance levels can be included. Thus, chest physiotherapy is effectively used for airway clearance in children after nebulization.
Health secrets hidden in guava leaves: Guava tea, a delicious and natural solution to treat diarrhea in children! Vaidyanatahan, Sundarapandian; Sidiq, Fahmi; Halim, Nurfadhlina Abdul
International Journal of Global Operations Research Vol. 4 No. 3 (2023): International Journal of Global Operations Research (IJGOR), August 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i3.243

Abstract

This study aims to increase public knowledge about the processing of guava leaves as herbal medicine to treat diarrhea. Prior to counseling and training, the results of the pretest showed that most of the participants (70.5%) had known the utilization and processing of guava leaves as herbal medicine. After attending the training, participants were given a post-test questionnaire to measure the increase in their knowledge.The results showed that there was a significant increase in the participants' knowledge after attending the training. The knowledge percentage increased from 70.5% to 89.0%, representing an increase of 18.5%. This training provides information on how to process guava leaves into herbal medicines that are effective in treating diarrhea.Some of the processing methods taught in the training include making guava leaf tea, guava leaf extract, and decoction of guava leaves. Participants were also given knowledge about the active ingredients in guava leaves, such as quercetin, which has an anti-diarrhea effect.This study showed that the counseling and training program was effective in increasing participants' knowledge about processing guava leaves as a herbal medicine to treat diarrhea. With the knowledge gained, it is hoped that the community can properly process guava leaves and use them effectively in maintaining health and treating diarrhea with simple medication. This program also empowers garden plants in the environment around the village as an easily accessible source of herbal medicines.
Performance Analysis of Service System in the Pediatric Clinic Department at Rumah Sakit Umum Daerah (RSUD) Sumedang Annisa, Diana; Supian, Sudradjat; Nahar, Julita
International Journal of Global Operations Research Vol. 4 No. 3 (2023): International Journal of Global Operations Research (IJGOR), August 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i3.233

Abstract

A service is considered good if it can provide fast service so that customers are not left waiting for too long. If a service has a long queue, then causing customers to wait for a long time, their satisfaction and trust levels may decrease. Rumah Sakit Umum Daerah (RSUD) Sumedang offers various outpatient services, including a pediatric clinic. Almost every day, a significant number of patients come to the pediatric clinic, resulting in considerable waiting time for patients. The service discipline used is First Come First Serve, and the service system falls under the multi-phase category, where each patient has to go through several stages to receive optimal service. This research will focus on the service system in the pediatric clinic at each stage, starting from registration, examination by the doctor, to medication collection at the pharmacy. The research findings indicate that the workload at the pharmacy counter is very high, while it is significantly low at the registration counter, resulting in suboptimal performance of the service system at these two stages. The performance of the service system can be improved by reducing service facilities at the registration counter and adding resources at the pharmacy counter. 
Reduction of Organ Absorbed Dose and Cancer Risk through Optimizing the Use of Projection in Diagnostic X-ray Examination Nuramdiani, Dian
International Journal of Global Operations Research Vol. 4 No. 3 (2023): International Journal of Global Operations Research (IJGOR), August 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i3.245

Abstract

This study aimed to calculate and compare the estimated organ absorption dose, risk of cancer due to exposure, and dose received by the gonads for women and men in radio diagnostic examinations with different projections. Radiographic examination of the abdomen (with anterior-posterior (AP) and posterior-anterior (PA) projections) and lumbar vertebrae (with anterior-posterior projection (AP), Right posterior-anterior oblique (RPO), and Left posterior-anterior oblique (LPO)), were performed. Software based on the Monte Carlo program has been used to calculate the estimated absorbed dose of the organ, the risk of cancer due to exposure, and the dose received by the gonads with different projections. The results showed that the PA projection on abdominal examination resulted in lower absorbed doses for the colon wall, liver, pancreas, and small intestine wall compared to the AP projection. The AP projection resulted in a higher absorbed dose than the oblique projection on the lumbar vertebral examination. RPO and LPO projections on lumbar spine examination produce different absorbed doses in organs. The colon wall, kidneys, pancreas, and prostate in men received lower doses using LPO, and the bladder, liver, ovaries (women), small intestine wall, and uterus in women received lower doses using projected RPO. The risk of cancer due to radiation exposure on abdominal examination is 35%-51% reduced using the PA projection, and on examination of the lumbar spine 40%-45% is reduced using the LPO projection. The dose received by the gonads showed that the ovarian dose reduction was 54% using the abdominal PA projection and 11% using the lumbar RPO. The dose reduction in the testicles was shown to be significant with the use of the abdominal PA projection.
Analysis of Transportation Mode Selection at Padjadjaran University Campus Jatinangor Using Fuzzy Analytic Hierarchy Process (FAHP) Method Bhagawanta, Hanif Ibnu; Hertini, Elis; Nahar, Julita
International Journal of Global Operations Research Vol. 4 No. 3 (2023): International Journal of Global Operations Research (IJGOR), August 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i3.239

Abstract

Transportation has become a very attached part of human daily life as a means of mobility in activities. Each transportation user has their own goals in transportation, so the mode of transportation travel takes effect in making it easier for users to reach their goals. At Padjadjaran University, Campus Jatinangor, there are several alternative modes of transportation, namely Odong-Odong, Easy Bike, conventional motorcycle taxis, and online motorcycle taxis. Each alternative mode of transportation has varying characteristics and user needs, so it is necessary to make the right decision. This study uses the Fuzzy Analytic Hierarchy Process (FAHP) method to determine priority criteria and alternative modes of transportation suitable for use on campus. The criteria used in this study include tariff, time, comfort, safety, and environmental responsibility. The results in this study obtained the order of priority criteria, is safety, comfort, time, tariff, and environmental responsibility. Moreover, the alternative priority orders are Odong-Odong, online motorcycle taxis, Easy Bike, and conventional motorcycle taxis. That can be interpreted as the safety criteria are the most considered, and Odong-Odong is the most appropriate alternative to be used at Padjadjaran University, Campus Jatinangor.
Analysis of Gate Machine Facilities and Train Arrival System for Indonesian Commuter Line Users at Bekasi Station Pratiwi, Adisty
International Journal of Global Operations Research Vol. 4 No. 3 (2023): International Journal of Global Operations Research (IJGOR), August 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i3.228

Abstract

The daily activities of communities required the movement of people from one place to another. Communities need a service that can help their movement in their daily activities so the time used becomes more effective and efficient. PT Kereta Commuter Indonesia is one of the subsidiaries of PT Kereta Api Indonesia (Persero) which can be a solution for the community to answer urban transportation problems, especially the Jabodetabek area which is increasingly crowded and complex. However, users of public transportation services, including commuter line users, have to wait to get the service. Based on this background, this study focus is to discuss related to gate machine facility services and train services using concept of queueing theory. This research was conducted at Bekasi Station which has nine gate machines for check in with First Come First Serve service and four train platforms to serve the trains with Priority Service. The service model using Multiple Channel Single Phase service model. The result of this study indicate that the activity level of Indonesia’s Commuter Line service at Bekasi Station in term of check in is quiet high, while the train service has a low level activity so that the service system is not optimal. The level of activity in commuter line service can be more optimal if there is a reduction in facilities for the train service into three platforms that used in 09.00 – 18.00 WIB at Bekasi Station
Comprative Analysis of Profitability Before and During The New Normal During Covid-19 Moisino, Misel Lindi; Parmikanti, Kankan; Riaman, Riaman
International Journal of Global Operations Research Vol. 4 No. 3 (2023): International Journal of Global Operations Research (IJGOR), August 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i3.232

Abstract

The pandemic caused by the corona virus or what is often referred to as Covid-19 has a very big impact on Indonesia and even the whole world. Various aspects were affected including trade. The drastic decline in business profits caused by Covid-19 is not even a few businesses that have gone out of business. One of the affected businesses is PT OSATEX 2. This study aims to determine the difference in profitability in PT OSATEX 2 Company before and during the New Normal during the Covid-19 period. This research uses quantitative and qualitative types of research with the calculation of profitability ratios. The profitability ratios used are Return on Assets (ROA), Return on Equity (ROE), Net Profit Margin (NPM) and Gross Profit Margin (GPM). The data collection technique in this study is directly by analyzing the financial statements of the PT OSATEX 2 company during the period March 2020 – December 2021. The data analysis methods used are the Wilcoxon Non Parametik test and the Paired sample t-test with the help of Microsoft Office Excel 2019 and IBM SPSS. The result of the study was that there were differences in the value of Return on Assets (ROA) before and during the New Normal during the Covid-19 period, although there was no difference in the value of Return on Equity (ROE), Net Profit Margin (NPM) and Gross Profit Margin (GPM) before and during the New Normal during the Covid-19 period. There is a decrease in the ROA and ROE value indicating that the company PT OSATEX 2 has experienced negative developments while for NPM and GPM the company PT OSATEX 2 has increased, indicating that the company is experiencing positive developments with the New Normal situation.

Page 8 of 17 | Total Record : 164

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