Udayana University Research Articles

Design of Digital Lux Meter Based on Arduino Using EL7900 Photodiode Sensor

Aims: To design and manufacture a digital lux meter to the illumination intensity (E) detection tool that is more efficient, relatively cheaper, and can be carried because it has a smaller shape and size compared to tools on the market. Study Design: Design of lux meter digital based on Arduino uno using an EL 7900 sensor. Place and Duration of Study: Physics Study Program, Faculty of Mathematics and Natural Sciences, Udayana University, from June 2024 to September 2024. Methodology: The method used is to design electronic components so that it can become a digital lux meter. The main processor uses Arduino. The microcontroller functions as a data processor which is the output of the EL 7900 sensor. The HC-SR04 sensor is a distance sensor whose function is to measure the distance measured on the design tool. The detection results from the sensor are then processed in the microcontroller and displayed on the OLED. Results: Lux meter digital based on Arduino uno using EL 7900 sensors has been produced. The results of the research show that the further the measurement distance from the light source, the illumination intensity (E) decreases. This research also finds that the illumination intensity will increase if the source power is increased. Based on calibration testing between the design tool and the reference tool, it shows very good results with an error rate of 0.06%. Field test results showed that the level of accuracy of the illumination intensity between the design tool and the reference tool at a distance of 150 cm from the light source with different light source power reached 99.48%. Conclusion: In this research, digital lux meter to the illumination intensity (E) detection tool, relatively cheaper and can be carried because it has a smaller shape and size compared to tools on the market. Based on calibration testing, it shows very good results with an error rate of 0.06%.

FINANCIAL LITERACY, RISK TOLERANCE, RETURN, AND INTEREST IN STUDENT INVESTMENT DECISIONS

Investing in the capital market is growing rapidly in Indonesia, as evidenced by the increasing number of investors registered at PT Kustodian Sentral Efek Indonesia and most of them are young investors under 30 years old. The objective of this research is to examine how financial literacy, risk tolerance, return, and interest affect decision-making when it comes to investments. The participants involved in this study are students enrolled in the Bachelor of Accounting program at Udayana University's Faculty of Economics and Business from the graduating classes of 2020 and 2021. The sample was determined using the purposive sampling technique, a sample of 242 respondents was obtained. The data analysis technique uses multiple linear regression analysis. The results of the analysis prove that financial literacy, risk tolerance, return, and interest have a positive effect on students' decision to invest. The results of this study can provide empirical support in behavioral finance theory and theory of planned behavior which explain behaviors related to students' decisions to invest.

Sebaceous Adenoma in a Geriatric Poodle Dog: A Case Report

A 14-year-old black male Poodle was brought to the Animal Teaching Hospital, Udayana University by its owner with clinical signs of frequent licking of its left front paw. Upon examination, red bumps were observed on the left front leg, accompanied by small, round black spots scattered on the dorsal side of the body. Additionally, black nodules were present on the lower eyelids and hind limbs. Surgical intervention was undertaken to excise the tumor mass, with the animal under anesthesia induced by ketamine at 5 mg/kg BW intravenously. The reddish nodule was excised by performing an elliptical incision at the base of tumor. Postoperatively, the animal received an antibacterial injection comprising ceftriaxone and tazobactam at 25 mg/kg BW intramuscularly and antiseptic wound dressing for supportive care. Microscopic examination revealed neoplastic cells arranged into lobules of varying sizes and shapes within the tumor mass. These lobules consisted of differentiated sebocytes and basaloid cells. At the periphery of the neoplastic lobules, the basaloid cells displayed several layers and exhibited invasion with moderate anisocytosis. The mitotic index was no more than ten cells in one field of view. Based on these histopathological features, the tumor was confirmed to be a sebaceous adenoma. After a 10-month follow-up period, there were no signs of tumor recurrence observed.

Low Serum Vitamin E Levels Positively Correlate with the Severity of Acne Vulgaris

ABSTRACT Acne vulgaris (AV) is a common disorder of the pilosebaceous, especially prevalent in adolescents. Acne vulgaris ranks among the top ten most prevalent diseases globally. Although AV may resolve spontaneously, sequelae such as scar formation can persist, causing aesthetic and psychological disturbances. There is an antioxidant to counteract acne-causing oxidative stress, vitamin E, which is an important antioxidant in the human body. Therefore, vitamin E in the skin can reduce the formation of squalene peroxide and prevent the occurrence of AV. This is an analytical observational study using a cross-sectional design. The investigation was conducted at the Dermatology and Venereology Clinic of Prof. Dr. I.G.N.G. Ngoerah Denpasar Hospital and the laboratory of the Faculty of Medicine, Udayana University, from February 2024 until the sample size was fulfilled. The sample consisted of patients aged 12-45 years with acne vulgaris who visited the clinic and were then selected through consecutive sampling according to the inclusion and exclusion criteria. In the non-AV group, the mean serum vitamin E level was 19.3 ± 0.99 µg/ml, whereas in the AV group, it was 4.49 ± 19.1 µg/ml, indicating a significant variance. There was a positive correlation between low vitamin E levels and the severity of AV. The linearity graph shows the direction of the relationship between serum vitamin E levels and the severity of AV, which leads to the lower right, indicating that the higher the severity of AV, the lower the serum vitamin E levels. The mean levels differed significantly between the non-AV and AV groups. A favorable association was found between low vitamin E levels and the severity of AV. Keywords: Acne Vulgaris, Severity, Serum Vitamin E, Reactive Oxygen Species (ROS)

REKAYASA SISTEM INFORMASI FASILITAS PARKIR BERLANGGANAN DI KAMPUS SUDIRMAN UNIVERSITAS UDAYANA BERBASIS ANDROID

Parking facilities have become a crucial component in this era of mobility. The increasing number of vehicles each year has led to a growing demand for parking spaces. Parking facilities must meet several criteria, such as guaranteed security, adequate land, and good management to ensure drivers feel comfortable leaving their vehicles. The Sudirman Campus of Udayana University has adequate parking space at various corners of the campus for both two-wheeled and four-wheeled vehicles. However, the availability of adequate parking facilities is not proportional to good management and security supervision. This often leads to various problems, ranging from overload to security issues. Therefore, an integrated parking management system is needed to ensure that the use of parking spaces at the Sudirman Campus is more orderly, targeted, and secure. In this study, the author designs an integrated parking management system for the Sudirman Campus that utilizes technology. This system has two main components: an Android-based parking facility information system and a prototype automatic gate. The Android application is built using the Flutter framework and utilizes QR Code technology, which is a development of Barcode. Meanwhile, the automatic gate prototype is built based on the Internet of Things and serves as a trial before the actual design of the automatic gate.

The relationship between Neutrophil to Lymphocyte Ratio (NLR), Platelet to Lymphocyte Ratio (PLR), and Monocyte to Lymphocyte Ratio (MLR) with the clinical severity level of COVID-19 patients at Udayana University Hospital

Background: COVID-19 is an pandemic with a high transmission rate. Due to its widespread availability, complete blood count has the potential to be used as an initial screening for clinical severity. Objective: This study aims to determine the relationship between NLR, PLR, and MLR with the clinical severity level of patients with COVID-19. Method: A cross-sectional study was conducted at Udayana University Hospital on COVID-19 patients hospitalized from March 2020 to March 2021. Subjects were divided into critical and non-critical groups and analyzed for their relationship with the components of the complete blood count on the first day of hospitalization. Result: The analysis found that the study subjects had a mean (± standard deviation) age of 54.20 (± 15.57) years. The mean (± SD) hemoglobin level was found to be 13.44 (± 4.05) g/dL, and the platelet count was 245.75 (± 107.36) x 103/μL. The median (interquartile range) leukocyte count was found to be 7.78 (4.91) x 103/μL, neutrophils 5.72 (4.91) x 103/μL, basophils 0.01 (0.01) x 103/μL, eosinophils 0.01 (0.01) x 103/μL, monocytes 0.53 (0.41) x 103/μL, lymphocytes 1.10 (0.89) x 103/μL, NLR 5.21 (7.77), PLR 193.34 (153.54), and MLR 0.51 (0.42). Conclusion: NLR, PLR, and MLR are significantly associated with the clinical severity level in COVID-19 patients at Udayana University Hospital. These findings can assist clinicians in assessing the potential for worsening clinical severity from mild to severe or critical levels in COVID-19 patients.

The Role of Organizational Commitment in Mediating the Effect of Work-Family Conflict and Work Stress on Employee Performance (Study at the Faculty of Cultural Sciences, Udayana University)

Goal setting theory explains that a person's behavior is determined by values and goals. Goals set influence actual behavior, which is governed by ideas and intentions, thereby influencing actions and performance. Effective control of work-family conflict and work stress improves performance. Human Resource Management involves planning, organizing, implementing, and controlling human resources to achieve organizational goals efficiently. Work-family conflicts, such as heavy workloads and family responsibilities, and work stress reduce motivation and performance. Organizational commitment, including loyalty and work motivation, helps employees overcome conflict and stress and maintain good performance. The respondents in this research were employees at the Faculty of Cultural Sciences, Udayana University . The number of respondents in this study was 52 respondents using nonprobability techniques , namely saturated samples or often called total sampling. This research uses Structural Equation Modeling (SEM) analysis from the Smart Pls program. The results of this study indicate that work-family conflict and work stress have a negative and significant effect on organizational commitment. Work-family conflict and work stress have a negative and significant effect on employee performance. Organizational commitment has a positive and significant effect on employee performance. Organizational commitment is not proven to play a mediating role in the indirect effect of work-family conflict on employee performance. The effect of the mediating role of organizational commitment on the indirect influence of work-family conflict on employee performance has a direct effect without going through the mediating role of organizational commitment. Organizational commitment has been proven to play a mediating role in the influence of work stress on employee performance. The effect of the mediating role of organizational commitment on the indirect influence of work stress on employee performance is partial complementary mediation.

A Case Report: Treatment of Anaplasmosis and Ectoparasitic Infestation in Mixed-Breed Golden Retriever Dog

Anaplasmosis is a disease in dogs caused by intracellular gram-negative bacteria belonging to the Anaplasmataceae family. A 6-month-old mixed-breed golden retriever was examined at the Laboratory of Veterinary Internal Medicine, Faculty of Veterinary Medicine, Udayana University, with complaints of itching, tick infestation, weakness, and decreased appetite. The clinical examination revealed pale mucous membranes in the mouth and eye conjunctiva, as well as an infestation of Rhipicephalus ticks on the skin. Routine hematological examination indicated the presence of anemia and thrombocytopenia. Blood smear examination confirmed the presence of Anaplasma sp. Treatment was provided in a causative and supportive manner. Causative therapy involved the administration of doxycycline at a dose of 10 mg/kg body weight orally for twenty-eight days, ivermectin at a dose of 0.2 mg/kg body weight injected subcutaneously every two weeks for four weeks. Supportive therapy included the daily administration of Fufang E'jiao Jiang ®(Dong E Ejiao Co, Ltd., Shandong, China) at 2 ml/day and Sangobion® (PT. Merck Tbk, Jakarta, Indonesia) at one tablet per day for fourteen days. Treatment with doxycycline, ivermectin, Fufang E'jiao Jiang® (Dong E Ejiao Co, Ltd., Shandong, China), and Sangobion® (PT. Merck Tbk, Jakarta, Indonesia) resulted in a positive outcome for the dog, with improved activity, hair growth, good appetite, and the absence of ticks.

THE RELATIONSHIP BETWEEN SIMPLE SUGAR INTAKE AND THE ABDOMINAL CIRCUMFERENCE OF PSSK STUDENTS

The abdominal circumference is dependent upon various factors, one of it is the simple sugar intake. Hence, research has been conducted in order to determine the effects of simple sugar intake on the abdominal circumference because there is an increase in people who have a large abdominal circumference in the past years, mainly due to increase in simple sugar intake. The research was conducted using a descriptive design with a cross-sectional analytical research method amongst the Medical Students of Udayana University by providing questionnaires. For the majority of the students, the simple sugar intake appears to be in the mid-range. There are 15 students, whose intake is more than the mid-range and 14 student whose intake below the mid-range. For majority of students, the abdominal circumference appears to be around the mid-range, 65.8cm to 92.8cm. There are 8 students whose abdominal circumference is more than the mid-range and another 8 students whose abdominal circumference is below the mid-range. The Pearson chi-square test value is 25.772 with an asymptotic significance 2 tailed (often referred to as “p”, short for probability) value of 0.018. Since this p-value is below 0.05, it means there is a significant or valid relationship between the two variables as expected.In conclusion, there is a significant relationship and moderate correlation between the intake of simple sugars and abdominal circumference amongst the PSSK UNUD students

CORRELATION BETWEEN PEDIATRIC SYMPTOM CHECKLIST-17 (PSC-17) AND PEDIATRIC QUALITY OF LIFE INVENTORY (PedsQL) IN ELEMENTARY SCHOOL CHILDREN

Background : Identification of psychosocial problems and quality of life of school-aged children should be routinely applied in child developmental health-related practices. The main concerns in measuring the quality of life of children with psychosocial disorders are mainly related to language development, cognitive development and the type of disorder. This has led to the identification of developmental disorders in school-aged children requiring specific tools (PSC-17 score and PedsQL score) designed for pediatric patients. The similarities or differences obtained based on these measurement tools will depend on the precise formulation of the questions as well as the assessment of the situation of the individual being evaluated. Methods : An analytic observational study using a cross-sectional design involve three elementary schools in the Jimbaran area, Badung, Bali. The study was conducted at Udayana University Hospital in July 2022. The scores used in this study were self-reported PedsQL scores and PSC-17 scores obtained based on interviews with children. The correlation between the evaluation results using the PSC-17 and PedsQL questionnaires was evaluated using the Spearman correlation test. Results : Amongst 189 children, median age was 11 years (range 11–13 years). There was a significant correlation between PSC-17 scores and PedsQL scores (r= -0.59; p<0.001). Subgroup analysis on PSC-17 aspect subscales and PedsQL dimensions found significantly varying negative correlations. Conclusion : This study found a moderate negative correlation between PSC-17 scores and PedsQL scores, varying correlations strength between each aspect/dimension of each score. Keywords: children, quality of life, PedsQL, psychosocial, PSC-17.

ANALISIS KEPUASAN MAHASISWA UNIVERSITAS UDAYANA TERHADAP SISTEM LAYANAN INFORMASI IMISSU

Information is a valuable asset in digital era. Government , educational institutions, and public service organizations face increasing expectations to manage information properly and efficiently. This problem can be solve by information system service. The success of an information service system can be measured by user satisfaction. Udayana University has several information service systems. One of the information service systems owned by Udayana University is IMISSU (Integrated Management Information System the Strategic of Udayana). Our research aims to study the analysis student satisfaction at Udayana University. We used partial least square modeling with five construct namely quality of information, quality of system, quality of service, perceived usefulness, and student satisfaction. The results of this research are all construct of this model has significant influence on student satisfaction quality of system has significant influence on student satisfaction with mediation of perceived usefulness and quality of system is the most variable influence on college student satisfaction

Epidemiological, Clinical, And Occupational Characteristics of Migrant Workers Confirmed with COVID-19 At Udayana University Hospital

The coronavirus disease 2019 (COVID-19) pandemic has prompted Indonesian expatriates to return home. Travel history, including migrant repatriation, was thought to spread COVID-19. These factors increased COVID-19 transmission. This study examined the epidemiological, clinical, and occupational characteristics of migrant workers with COVID-19 at Udayana University Hospital. This descriptive study utilized a cross-sectional methodology. The research samples consisted of 97 migrant workers diagnosed with COVID-19 who had been treated at Udayana University Hospital between March to August of 2020, using the total sampling technique. The median age (IQR) of migrant workers is 30, and 84.53% are male. Before returning to Indonesia, many worked and visited the US (20.6%). 87.63% of respondents worked in hospitality sector, and mostly worked in 8–12-hour shifts. All respondents have insurance; most employers are provided with PPE and information regarding COVID-19 prevention. At the airport, COVID-19 screening revealed fever (70.6%) and cough (76.3%) as the most common symptoms. A 94.8% of migrant workers had no comorbidities, and 87.6% had normal chest X-rays. From this research, we discovered that amongst migrant workers, positive-COVID-19 results were mostly found in young, mobile men. Most of them worked for 8–12 hours per day, and majority worked in hospitality sector. Almost all of them did not have any comorbidities and the most common symptoms found were fever and cough. The findings suggest that male workers in their productive age with high mobility and working in the hospitality sector are at higher risk of infection.

The Role of Organizational Commitment in the Influence of Competency and Knowledge Sharing on Organizational Citizenship Behavior (Study At Udayana University)

Organizational Citizenship Behavior (OCB) refers to the actions of individuals within an organization who support each other in the work context. As explained in social exchange theory, reciprocal actions that a person performs without expecting anything in return are related to the quality of work life involving voluntary behavior, which is rooted in assumptions of reciprocity and fairness. Employees who have high competence tend to have high organizational commitment and display OCB, because they feel more capable and confident. Knowledge sharing between employees in an organization, also encourages organizational commitment and OCB, because employees who share knowledge feel more capable and confident in carrying out their duties. Organizational commitment makes Employees feel bound by their obligations and responsibilities to contribute to the organization. The respondents in this research were employees at Udayana University. The number of respondents in this study was 1,296 respondents, the sample size was set at 306 Udayana University employees determined using the Slovin formula. Determination of sample size which taken using Proportionate Stratified Random Sampling. This research uses Structural Equation Modeling (SEM) analysis using SmartPLS 3.0 software. The results of this research show that competence and knowledge sharing positive and significant effect on organizational commitment. Competence, knowledge sharing, and organizational commitment positive and significant effect on OCB. Commitment organization capable mediate influence No direct competence and knowledge sharing towards OCB. Effect mediation variable commitment organization on influence not direct competence and knowledge sharing towards OCB in nature partially mediated.

The Influence of Servant Leadership and Organizational Climate on Employee Performance with Job Satisfaction as Intervening Variables (Study at the Faculty of Cultural Sciences, Udayana University)

The Influence of Servant Leadership and Organizational Climate on Employee Performance with Job Satisfaction as Intervening Variables (Study at the Faculty of Cultural Sciences, Udayana University)

ANALYSIS OF FACTORS THAT INFLUENCE CAREER CHOICE AS A PUBLIC ACCOUNTANT WITH MOTIVATION AS A MODERATING VARIABLE

Indonesia faces a critical shortage of public accountants despite a growing demand for their services. While many individuals graduate with accounting degrees, few pursue careers in public accounting. This research aimed to understand the factors influencing this career choice, specifically examining the roles of financial rewards, professional recognition, and work environment, as well as the moderating effect of motivation. Based on expectation and planned behavior theories, the study analyzed data from 74 participants at Udayana University. Results indicate that motivation significantly impacts the relationship between financial rewards and the decision to become a public accountant, but it does not influence the relationships between professional recognition, work environment, and career choice in this field.

The Influence of Reference Groups, Lifestyle, and Brand Image on Purchasing Decisions for Samsung Brand Smartphones (Study on Undergraduate Students of Management, Faculty of Economic and Business, Udayana University)

The Influence of Reference Groups, Lifestyle, and Brand Image on Purchasing Decisions for Samsung Brand Smartphones (Study on Undergraduate Students of Management, Faculty of Economic and Business, Udayana University)

The Role of Mycorrhizae on the Growth of Banana Planlets of Cultivar Raja (Musa Paradisiaca C.V. Raja) from Bali at Post Acclimatization

The effect of inoculation of a combination of the arbuscular mycorrhizal fungus of Glomus and Acaulospora on micropropagated banana plantlets cultivar Raja from Bali during the acclimatization phase was investigated. The experiment was conducted at the Experimental Station of the Faculty of Agriculture, Udayana University, Denpasar, Bali, Indonesia, over the period of March to June 2022. The objective of this research was to evaluate the impact of various doses of mycorrhizae on the growth of tissue culture banana plantlets that had undergone acclimatization for a period of six weeks. A total of five different doses of mycorrhiza were applied to the acclimatized plantlets, namely M0=without mycorrhiza and M5=5g mycorrhizal. kg1, M10=10 g mycorrhiza.kg-1, M15=15 g mycorrhiza.kg-1, M20=20 g mycorrhizal. kg 1. A significant effect was discovered at M15; however, compared to M20, M20 gave better results for root length and fresh weight of the above-ground part, indicating the best dose was 20 g mycorrhiza kg-1. This study concluded that mycorrhiza has a very significant role in supporting the growth of micro-propagated banana plantlets at post-acclimatization. Variables observed, such as the average number of leaves, stem diameter, above-ground plant fresh and dry weight, and root fresh and dry weight, increased with the application of AMF (Glomus and Acaulospora).

The Influence of Financial Literacy, Perception of Capital Capability, Return Expectation and Family Environment on the Intention to Invest in Shares of Students in the Capital Market

One of the most popular financial products among Indonesians, according to a survey by the Financial Services Authority (OJK), is capital market investment. The number of investors in the capital market has increased year by year, yet the growth rate is lowest in the stock sector. This study aims to examine the influence of financial literacy, perceptions of minimal capital, return expectations, and family environment on students' intention to invest in stocks in the capital market, based on the theory of planned behavior. This research employs a quantitative approach. The study was conducted on undergraduate accounting students at the Faculty of Economics and Business, Udayana University, from the year 2017-2023. Data were collected by distributing a questionnaire via Google Forms to accounting students at FEB UNUD. The population in this study was 1.203 people. The sample was selected using probability sampling with proportionate stratified random sampling, resulting in 300 respondents. Data analysis techniques included descriptive statistical techniques and multiple linear regression analysis using SPSS 25.0. The results of this study indicate that financial literacy, perceptions of minimal capital, return expectations, and family environment have a positive effect on students' intention to invest in stocks.

Relationship between Sleep Quality and Primary Headache in Medical Bachelor’s Program Students at Udayana University

Relationship between Sleep Quality and Primary Headache in Medical Bachelor’s Program Students at Udayana University

RANCANG BANGUN MODUL TRAINER KIT MATA KULIAH SISTEM KENDALI+LAB BERBASIS INTERNET OF THINGS (IoT)

Along with the development of technology, control systems can now control various devices using smartphones connected to the internet remotely (Internet of Things). In order to have a good understanding of this field, universities have a very important role as an education institution. One of them is Udayana University through the Control System + Lab Course in the Independent Campus Learning Curriculum. This study aims to design an IoT-based Lab + Control System Trainer Kit Module using DevKit ESP32. The designed system includes an IoT-based DC motor control system using an L298N motor driver, an IoT-based water cooling control system using a DS18B20 temperature sensor, and an IoT-based water level control system using an HC-SR04 ultrasonic sensor. The system will be controlled through an application that has been created and installed on a smartphone connected to the internet so that it can be tested and analyzed to draw conclusions.