Recent Advances in Doped Bi2O3 and its Photocatalytic Activity: A Review

Bismuth Oxide (Bi2O3) has a very promising photocatalytic ability to degrade waste pollutants under visible light irradiation because it has a small energy gap of around 2.85-2.58 eV. Although it has excellent potential as a photocatalyst, Bi2O3 has the disadvantage of a high electron-hole pair recombination rate, which will reduce its photocatalytic activity. To overcome these problems, surface modifications, defect recognition, or doping of Bi2O3 are carried out to obtain a more effective and efficient photocatalyst to degrade waste pollutants under visible light irradiation. Several studies by researchers have been described for the modification of Bi2O3 by doping. Various types of doping are given, such as doping in elements or doping in the form of compounds to form composites. Based on several studies that have been described, appropriate doping has been shown to increase the photocatalytic activity of Bi2O3. Keywords: Bi2O3, Photocatalyst, Doping

tRNAleu A3243G Gene Mutation of Mitochondrial DNA as a Risk Factor for Diabetic Retinopathy in Type 2 Diabetes Mellitus in Bali

Introduction: Diabetic retinopathy is one of the chronic complications in patients with diabetes mellitus caused by progressive microangiopathy. Various types of risk factors can affect the occurrence of diabetic retinopathy, one of which is mitochondrial DNA mutations in the tRNAleu A3243G gene that is common in T2DM. This study was conducted with the aim to identify whether the mutation of the tRNAleu A3243G gene acts as a risk factor for diabetic retinopathy in T2DM patients in Bali. Material and Methods: This study used a case control design with 35 T2DM patients with diabetic retinopathy and 35 T2DM patients without diabetic retinopathy. The techniques used to identify these mutations are PCR and DNA sequencing. Results: Based on the results obtained, no mutations were found in the tRNAleu A3243G gene in the entire sample. Therefore, the relationship analysis of the two variables cannot be identified. Conclusions: Mutations of the tRNAleu A3243G gene that were not successfully identified in this study can be concluded not play a role as a risk factor for diabetic retinopathy. Keywords: Diabetic Retinopathy, Diabetes Mellitus, tRNAleu Gene Mutation, Mitochondrial DNA.

Consumer Legal Protection Reviewed from Consumer Protection Law in Consumer Dispute Settlement through Litigation

There is a law called Law Number 8 of 1999 that deals with consumer protection. It says that disputes between consumers and business people can be settled through both litigation and non-litigation channels and that both types of channels can be used to do this. Using the courts to settle consumer disputes is a way to do this. This type of dispute resolution refers to the rules for general courts. So that consumers need to get help from the law to get their rights as consumers. Consumer protection is becoming more and more important as science and technology move faster and faster. This is because the speed of science and technology is what drives the productivity and efficiency of producers for the goods or services they make in order to reach their business goals. As a result of this, either directly or indirectly, the Consumers are the ones who feel the effects of these two things the most. In this case, the consumer protection law says that businesses must give legal protection to their customers, so this shows that businesses must do this. And legal remedies for resolving disputes between customers and business people in the event of a dispute can be used both in court and out of court. In order for a dispute to be resolved through litigation, one party has filed a lawsuit against the other party. However, non-litigation dispute resolution can be done in a number of ways, such as through negotiation, consolidation, mediation, arbitration, and so on. Keywords: Legal Protection, Consumers, Consumer Disputes, Litigation, Laws.

The Effect of Liquidity, Thin Capitalization, Capital Intensity, and Earnings Management on Tax Avoidance in Manufacturing Companies Listed in Indonesia Stock Exchange (IDX) 2010-2020 Period

This study aims to determine the effect of liquidity, thin capitalization, capital intensity, and earnings management on tax avoidance in manufacturing companies listed on the Indonesia Stock Exchange (IDX) for the 2010-2020 period. The type of research used is descriptive quantitative. The research sample used was 34 companies from 184 companies. The sample return method used is the selection of samples for research from the research population by fulfilling several predetermined criteria (purposive sampling). The data type used is secondary data, and the data analysis technique is a multiple linear regression test using Eviews 9 software. The proxy used for tax avoidance is the book-tax difference (BTD). The results of this study indicate that liquidity and earnings management have a positive and significant effect on tax avoidance. Meanwhile, thin capitalization and capital intensity do not affect tax avoidance. Keywords: Tax Avoidance, Liquidity, Thin Capitalization, Capital Intensity, Earnings Management.

Electronic Development of Student Worksheets Based on Science, Technology, Engineering, Art, and Mathematics to Improve Creative Thinking Ability of Class V Elementary School Students in Science Learning

This study aimed to analyze the validity, effectiveness, and practicality of the E-LKPD (Electronic Student Worksheet) to improve the creative thinking skills of fifth grade students at SDN 1 Kutoharjo and SDN 2 Kutoharjo after participating in STEAM-based learning (Science, Technology, Engineering, Art, and Mathematics). This study used research and development procedures with reference to the 4D model (Define, Design, Develop, and Disseminate) but this research was only up to the develop stage. The research design used was "One Groups Pretest-Posttest Design" with 72 students as research subjects. The research instrument used was observation sheet, interview sheet, expert validation test sheet, written test (pretest and posttest), and questionnaire sheet (questionnaire). The results of the research, it can be analyzed that the validity of the E-LKPD according to the material expert validator is 91.6 in the very valid category, the media expert validator was 75 in the valid category, and the language expert validator was 85 in the very valid category. The effectiveness of E-LKPD according to the results of the N-Gain test calculation of 0.61 was included in the category of quite effective and showed that there was a significant increase in creative thinking skills before and after using STEAM-based E-LKPD with 91% classical completeness results with complete criteria. STEAM-based E-LKPD was declared practical according to the results of teacher and student respondents which showed that teacher respondents scored 83 and 80 in the very attractive category and student respondents produced an average score of 81 in the very attractive category. The conclusion of the research was the development of STEAM-based E-LKPD was suitable for distance learning activities and can improve students' creative thinking skills. Keywords: E-LKPD IPA, STEAM, Creative Thinking.

Significance of Tourism Budget, Inflation, and Interest Rate on Economic Growth in Indonesia for the Year of 2011-2020

This study is aimed to investigate the relationship of tourism budget, inflation, interest rate on economic growth in Indonesia in 2011 – 2020. Data was gathered from Central Bureau of Statistics (Badan Pusat Statistik/BPS) and Ministry of Finance (Kementerian Keuangan/Kemenkeu). The data were analyzed using the multiple regression analysis after fulfilling all of the classical assumption tests. It showed that the inflation and interest rate have significant positive impact while tourism budget has insignificant negative impact on economic growth. In this case, monetary policy tends to be efficiently implemented at the level of promoting growth. However, Indonesia is still early on hoping significant contribution of tourism sector. Keywords: Tourism Budget, Inflation, Interest Rate, Economic Growth, GDP, Multiple Regression Analysis.

Assessment of the Behavioural Effects of Cartoon Viewing among Parents of Under-Five Children

Background of the Study: Cartoons are the most popular entertainment for the Children. Mostly children begin watching cartoons on television at the early age of six months, and by the age of two or three children become enthusiastic viewers. Objectives: The main objective of the study is to assess the behavioral effects of cartoon viewing among the parents of under-five children. Methodology: Descriptive study design was used to conduct the study in selected tertiary care hospital. As per the inclusion criteria 50 samples were selected by using non probability purposive sampling technique. Self structured questionnaire was used to collect data and the behavioral effects of cartoon viewing among the parents of under-five children. Results: The study findings revealed that, among 50 samples 32% of the Children had mild effects on behaviour, 66% had moderate effects on behaviour and 2% of the Children had sever effects on behaviour. The mean and standard deviation score of the study was 54.72+0.8571. There was a significant association between the behavioral effects of cartoon viewing and the age of the Children (χ2 = 7.6364 , P<0.05). Conclusion: The study concluded that, 32% of the children had mild effects on behaviour, 66% had moderate effects on behavior and 2% of the children had sever effects on behaviour. Keywords: Cartoons, behavioral effects, under five children, parents.

Mathematics Communication Skill Analysis in Means-End-Analysis Learning Assisted with Manipulative Property (APM) and Application Based on Self-Efficacy

This research analyzed mathematics communication skills with the Means-End Analysis model assisted with Manipulative Property (APM), MEA with Linear System Pro application, and PBL based on the eighth graders' self-efficacy. This quasi-experimental research used a nonequivalent pretest-posttest control group design. The subjects were eighth-graders of Public JHS 4 Adiwerna. The samples were VIII-C learners as the first experimental group, VIII-G learners as the second experimental group, and VIII-H learners as the control group. The data collecting techniques were mathematics communication skill test and self-efficacy inventory. The results were: (1) MEA with APM (82.75%), MEA with Linear System Pro (78.12%), and PBL (75%) of the learners reached the minimum mastery standard with a proportion percentage, 75%; (2) there were mean differences between MEA assisted by APM, MEA assisted by Linear System Pro, and PBL toward the learners’ mathematics communication skills, (3) there were significant differences of self-efficacy: high, moderate, and low toward the learners’ mathematics communication skills; and (4) there were interactions between learning models with the levels of self-efficacy toward learners’ mathematics communication skills. Keywords: Mathematics Communication Skill, Means-End-Analysis Learning Model (MEA), Manipulative Property (APM), Linear System Pro, Self-efficacy.

The Factors Affecting the Acceptance of Going Concerned Audit Opinion (Empirical Study on Registered Agricultural Sector Companies in Indonesia Stock Exchange 2013-2019)

The study aimed to determine and analyze the effect of financial distress, firm size, profitability, cash flow ratio, leverage, and environmental performance on going concern audit opinion. The research object is the agriculture sector company listed on the Indonesia Stock Exchange (IDX). The population in this study were all companies listed in the agricultural sector on the Indonesia Stock Exchange for the 2013-2019 period. The total population in this study was 21 companies. The method used in determining the sample using the purposive sampling technique. The sample in the study was 17 companies with 119 data analyzed. The study used secondary data and used multivariate analysis. The results of this research state that financial distress, profitability, cash flow ratio, environmental performance do not affect the acceptance of going concern audit opinion. The firm size has a negative effect on the acceptance of going concern audit opinions. In contrast, leverage positively affects the acceptance of going concern audit opinions in the agriculture sector listed on the Indonesia Stock Exchange (IDX) for 2013-2019. Keywords: financial distress, firm size, profitability, flow ratio cash, leverage, going concern audit opinion.

The Impact of Work Stress on Job Satisfaction of Employees at Can Tho Radio and Television Station

The study aims to demonstrate the influence of work stress on job satisfaction of employees at Can Tho Radio and Television (TV) Station. Research data were collected from 140 employees working at the Radio and TV Station of Can Tho City. Applying the structural equation modeling, the research has pointed out factors forming work stress. They include work overload, pressure from the manager, income pressure, workplace relationships, and working conditions. When work stress forms, it negatively impacts the job satisfaction of the staff at Can Tho Radio and TV Station. Keywords: work stress, satisfaction, employee, Can Tho Radio and Television Station.