Muhammadiyah University of Yogyakarta

This study investigated the mechanical and physical properties of hybrid composites made with nylon fiber mesh (N), woven glass fiber (G), and unsaturated polyester (UPE) resin filled with different oxide ceramic particles (CPs) (ZnO, Al2O3, ZrO2, and TiO2). The influence of the stacking order of N and G (GGNNGG, GNGGNG, NGGGGN, and NNGGGG) on the mechanical properties of the composites was also studied. The goals of this study are to determine the best CP and stacking sequence for enhancing composite properties (flexural and impact properties) and reducing water absorption. The composites were manufactured in two steps using hand lay-up and press molding techniques. The first step involved fabricating N/G/UPE-2%CPs composites with a ratio of 8:14:78 (vol%) and a GNGGNG stacking sequence, referred to as type 1. In the second step, a composite with optimum properties obtained from type 1 was used as a reference and compared to composites with three different stacking sequences of GGNNGG, NGGGGN, and NNGGGG, known as type 2. The three-point bending, Charpy impact, and water absorption tests were conducted. The results revealed that the mechanical properties of N/G/UPE-2Al2O3 and N/G/UPE-2ZnO composites are nearly identical and higher than the others. However, N/G/UPE-2Al2O3′s water absorption is lower than that of N/G/UPE-2ZnO. These results suggest that the N/G/UPE-2Al2O3 composite, with a GGNNGG stacking pattern and a flexural strength of 125.12 MPa, an impact strength of 84.2 kJ m⁻², and a low water absorption of 0.56%, could potentially serve as biomaterials.

El Niño-Southern Oscillation (ENSO) affects climate patterns, leading to increased temperatures, high evaporation rates, and reduced precipitation in affected regions. This affects the amount of surface flow that keeps many rivers from moving until they dry up. This is also happened in Winongo, Code and Gajahwong rivers located in Yogyakarta Province. Stagnant water can affect water quality due to immobile water pollution. This study monitors river water quality by assessing Dissolved Oxygen (DO), Potential Hydrogen (pH), and Ferrum (Fe) levels. Water samples were collected from the upstream, midstream, and downstream sections of the Winongo, Code, and Gajahwong rivers to assess water quality. This approach helps identify pollution sources, understand spatial variability, and develop effective water management strategies.. Results indicate that the Winongo River had the highest Dissolved Oxygen (DO) level of 2.4 mg/L in the downstream section. The Code River had the highest pH of 8.1 in the upstream area, while the Gajahwong River showed a stable Iron (Fe) concentration of 2.5 mg/L. According to government regulations, the water quality in all three rivers is suitable only for irrigation purposes.

Today’s mass media are entering the age of technology. Mass media generally has a structure that governs policy and social construction. Online mass media news can potentially to establish a significant framework that shapes public opinion. The U20 World Cup cancellation has emerged as a significant political topic. His study aims to analyze how Kompas.com and Beritasatu.com communicated the impact of the 2023 U20 World Cup cancellation in Indonesia. Ganjar Pranowo, a political figure, has emerged as the primary focus due to his anticipated participation in the 2024 elections. The qualitative research method employs the Zhongdang Pan and Gerald Kosicki models and Shoemaker and Reese’s hierarchical theory of media influence. Based on the framing analysis, the researchers discovered that Kompas.com and Beritasatu.com operate within distinct communication frameworks. Kompas.com reported on the consequences of the U20 World Cup’s cancellation, presenting both positive and bad aspects of the news. While Beritasatu.com emphasizes the government’s disappointment, the two media have different perspectives on the same news. On Beritasatu.com, rhetoric in the form of phrases is easy to find. The influence of media hierarchy extends to both media and its opposites. The five levels of hierarchy identify the role of Kompas.com’s gatekeeper in selecting outstanding words to attract attention while Beritasatu.com uses euphemism.

In the current digital era, media has become the primary platform where various types of content are presented and consumed by users from diverse backgrounds, including children. A prominent phenomenon is the emergence of kidfluencers on social media, particularly TikTok. These are children who wield significant influence over the consumption preferences and behaviors of their followers on social media. This research aims to explore the commercialization of child identity through the lens of kidfluencers, focusing on the sociocultural dynamics that shape this phenomenon. Using a qualitative approach, data was collected through in-depth interviews with influencers, parents of kidfluencers, and social media specialists. The results reveal that sociocultural aspects, including language and communication styles, identity, social structure, culture, and values, play a crucial role in the commercialization process. The study highlights how kidfluencers and their parents navigate the market’s demands while maintaining their cultural and social values. The commercialization stage often involves creating genuine content, reflecting the kidfluencers preferences and aligning with brand demands. The findings provide a nuanced understanding of the interplay between sociocultural factors and the commercial activities of kidfluencers on TikTok

Water quality in water supply systems is an important issue that needs to be evaluated to ensure health for human consumption. This research aims to assess the water quality in the water supply system in Jambon Village, Kulon Progo City, Indonesia. In this research, samples from several places were taken and tested in laboratory. The water quality test includes Fe (iron), CaCO3 (total hardness), and KMnO4 (calcium permanganate). The research results show that the Fe value at all sampling points were in accordance SNI (National Standard) for raw water quality, while CaCO3 levels were in the range of 113,26 and 126,53 mg/l. It is below the maximum standard of raw water, but higher than that of drinking water. KMnO4 test results were above the allowable value. KMnO4 value were between 31,5 and 38,5 mg/l which indicates the presence of contamination with a high organic substance content. Some efforts are needed to improve water quality, such as more adequate water treatment and educating the public about the importance of maintaining water quality.

Through the G20 forum, Indonesia raised the issue of digital transformation and collaborated with four ASEAN countries. Indonesia is also taking advantage of ASEAN Digital Economy Framework Agreement (DEFA) formation by advocating the interoperability of digital payment systems in ASEAN. This research aims to find out what efforts Indonesia has undertaken to support the realization of ASEAN’s digital economy, focusing from the initial approval of the Local Currency Settlement (LCS) which was approved by Indonesia, Malaysia, Thailand, and Philippines in 2016 until Singapore’s joining the Local Currency Transaction (LTC) framework in 2022. The study used a qualitative research method. The data used is secondary data originating from journals, documents, books, and official websites that are able to support research. The findings reveal that Indonesia’s efforts in supporting ASEAN’s digital economy are carried out by advocating the realization of interoperability in the payment system conducted by Indonesia through cooperation in using QRIS digital payments through the Local Currency Transaction (LCT) framework.

Islamic peer-to-peer lending is a Sharia compliance platform that connects lenders with borrowers. This research aims to find out the effect of Promotion, Return Expectations, and Risk Perceptions on the Investment intention of Islamic peer-to-peer lending investors. This quantitative research used a questionnaire distribution method. The sample in this research was 100 respondents, and data processing used a Partial Least Square (PLS) computer system. The data analysis technique in the research used two techniques, namely the measurement model test (outer model) and the structural model test (inner model). The results of this research show that the Promotion and Risk Perception variables have a significant effect on Investment Intention, while the Return Expectation variable has no effect on Investment Intention. P2P lending fintech companies are expected to continue to increase promotions, minimize risks, and improve the company’s image so that investors feel safe and are interested in investing in Sharia peer-to-peer lending companies.

The study analyzed 58 articles from leading international journals from 2015 to 2024. The research found significant trends, such as more publications appearing in 2023, indicating a growing interest in sustainable economic practices. The research exhibited that the United States led the way in contributions, followed by China, the UK, Spain, and Australia, each of which demonstrated an essential role in the advancement of blue technologies. Key research areas include “Blue Economy,” “Innovation,” “Sustainable Development,” “Environmental Economics,” “Climate Change,” and “Sustainability.” All these fields display a strong desire to combine economic activity with consideration of environmental aspects. Notably, much of the research was conducted by smaller institutions, which emphasizes extensive field cooperation. New themes, such as “Blue Taxation,” “Blue Digital Value Co-Creation,” and “Blue Digital Finance,” are attracting increasing attention, showing creative ways and technological advances to support sustainability. This study suggests conducting research involving multiple disciplines, studying creative financing methods, maintaining policy stability, addressing socio- economic disparities, utilizing technology and innovation, and cooperating with people around the world. The purpose of these insights is to aid future research and practice, foster advances in technology and innovation in the Blue Economy, and ensure economic growth in harmony with environmental sustainability.

According to statistical data from the Indonesian Directorate General of Agriculture, Lampung Province is able to produce approximately 110,000 tons of coffee per year. This shows that the existence and existence of coffee farmers in Lampung Province are very good and productive in producing coffee. The type of research conducted is quantitative descriptive. Quantitative descriptive is a type of research used to analyze data by describing or describing the data that has been collected as it is. Descriptive quantitative research uses a correlational approach. The income obtained by each farmer is different because it is influenced by several factors, such as the area of treatment land in the treatment consisting of fertilizing, cleaning weeds and pruning farmers' welfare can be selected from the value of the classification level of each indicator. The average income at IDR. 22,327,380.00 for each land area of 20,285.71m². with the lowest farmer income of IDR.7,538,095.00. The welfare level of the 42 samples of farmers who are included in the prosperous group is twenty-three samples with a percentage of (55%) and the sample that is included in the not prosperous group is nineteen samples with a percentage of (45%).

This research aims to analyze public behavior in environmental health management to uncover behavior patterns, motivation, and barriers faced. The employed research methods involve qualitative descriptive techniques, which entail extracting secondary data from reliable mass media sources via internet news platforms. It encompasses a range of measures and strategies to preserve a high standard of environmental conditions to promote the well-being of humanity. The research delves into the intricate dynamics between persons and their surroundings, examining the various aspects that impact people’s daily behaviors and habits concerning environmental health. The significance of imparting comprehension, consciousness, and expertise to the general population regarding the state of the environment, together with the beneficial influence it can have on human welfare and the long-term viability of ecosystems. The findings indicate a widespread public concern regarding environmental health management, with a focus on producing a pollution-free environment. However, there is still a need to improve public awareness and concern regarding clean water quality.

This study analyzes Anies Baswedan's leadership role in promoting social inclusion through subsidized food programs. This research uses descriptive qualitative methods with data collection techniques through literature studies and secondary data sources from official mass media reports. In line with the vision and objectives to lead and manage Jakarta with constructive transformation, the Provincial Government of DKI Jakarta implemented a subsidized food program to alleviate poverty and meet the population’s nutritional needs, especially the poor. The results showed that Anies Baswedan successfully implemented the subsidized food program with high efficiency and effectiveness, providing maximum benefits for the community. The program ensures that subsidized food remains affordable, thus increasing accessibility and equal opportunity for all citizens to participate and benefit. The impact of this program is not only to ease the burden of living, but also to improve the nutritional status of children and certain groups in Jakarta. Regular evaluations and monitoring are conducted to ensure the quality and safety of the subsidized food, with strict supervision of the distributed foodstuffs.

In urban areas experiencing population growth, the escalating quantity of automobiles presents several issues, including traffic congestion and air pollution. This research purpose to assess effectiveness of public transportation for the public in Jakarta and Bangkok. Furthermore, this research will analyze how these two cities implement the Smart City concept in their public transportation, using three main indicators: ICT integration, Innovation, and public mobility. This research uses a descriptive qualitative research method using secondary data obtained from various publications and news sources related to public transportation in the two cities. NVivo 14 software was used to process the secondary data, which enabled a thorough trend analysis and helped find relevant patterns. The results of this study show that transportation modes in Jakarta are more effective than Bangkok. The data analysis revealed that the mode of transportation significantly influences people’s interest in using public transportation in both Jakarta and Bangkok. Jakarta and Bangkok are actively seeking sustainable solutions to alleviate traffic congestion problems. Both cities are making continuous efforts to improve infrastructure related to public transportation.

Migration has long served as a critical livelihood strategy, enabling people to seek better wages when opportunities in their current location become scarce. Remittances—money sent back home by migrants—significantly boost household income and play a vital role in the economies of their home regions. This research investigates the remittances sent by migrant workers, how they are used within household dynamics, and whether they help elevate families into higher income categories. Data for this study was gathered from August 21 to August 31, 2023, using primary sources. The research employed purposive sampling, resulting in a sample of 168 families. A wealth ranking exercise was used to analyze poverty and understand rural livelihoods in developing countries, classifying households into low, middle, and high-income groups. For middle and high-income families, remittances are the largest source of income, averaging USD 2,790.25 for middle-income and USD 7,994.80 for high-income households. These remittances enable families to meet a broader range of needs, improve their quality of life, ensure future financial stability, and enhance their capabilities and investments, strengthening their potential to improve their socio-economic status.

The COVID-19 pandemic has made major changes to the economy in Indonesia. Various policies are carried out to meet the food needs of the community. The food diversification policy is a solution to fulfill food needs during a pandemic based on local wisdom because many people have not been able to meet their needs. This research aims to identify food commodities, namely Arrowroot tubers as commodities in the Local Wisdom-Based Food Diversification Program in the COVID-19 era. In this research, the method used is a qualitative method.

This study explores early marriage, defined as unions occurring below the legally recognized age of majority, through the lens of Islamic law and positive law. It examines principles from the Qur’an, Hadith, and national legislation, emphasizing the significance of psychological and physical maturity for a harmonious, lasting marriage. While Islamic teachings do not explicitly set a minimum age, they stress the importance of maturity and consent. The study also considers the Indonesian Fatwa Commission’s stance on child marriage, addressing eligibility and maturity requirements. Using a normative qualitative analysis, the research investigates various scholarly interpretations of age limits in marriage. It evaluates the effectiveness of Indonesia’s marriage age restrictions and the persistence of early marriages despite legal frameworks. Findings indicate that laws regulating marriage age are ineffective due to loopholes in marriage dispensation applications, leading to a high prevalence of early marriages. This study aims to provide a comprehensive understanding of the dynamics surrounding marriage age restrictions in Indonesia and suggests measures to mitigate the incidence of early marriages.

Freedom Shield 23 is a bilateral joint military exercise between South Korea and the United States, conducted from March 13 to March 23, 2023. The exercise aims to strengthen the defense system against the increasing nuclear threat from North Korea. This normative legal research adopts an international legal perspective, relying on literature reviews to systematically and logically analyse the data using analytical descriptive methods. South Korea, while seeking to avoid military conflict with North Korea, has responded to ongoing nuclear provocations by engaging in military cooperation with the United States through Freedom Shield 23 as a peaceful deterrence effort. This exercise aligns with the objectives of the United Nations, particularly Article 1, Paragraph 1 of the UN Charter. Freedom Shield 23 is characterized by computer-simulated command post training, incorporating blockchain and AI technology to address the challenges of digitalization. The digital transformation facilitated by this exercise enhances the readiness and synchronization of South Korean and U.S. troops, thereby strengthening defense and supporting the UN’s goals of maintaining regional security and stability on the Korean Peninsula.

Expansive clay is a problematic type of soil because it has large shrinkage properties. One action that can be taken to improve problematic soil is to stabilize it with additives such as lime, cement, RHA, fly ash, and GGBS. The results of stabilization using additives like this can increase the strength value of clay soil. Artificial Neural Networks (ANN) have been introduced in the geotechnical field to predict different soil properties. This research develops an artificial neural networks model to predict the Unconfined Compressive Strength (UCS) value of soil that has been stabilized, this is because the artificial neural networks model can show superior prediction results due to its flexibility and adaptability in generating data. The amount of data in this test was 420 and was divided into 336 training data and 84 testing data. In carrying out the training phase, 13 inputs were used in the form of granulometric test results, and in the testing phase, data from soil-free compression tests in the laboratory were used. The result of this research is that the use of the artificial neural networks model can predict the soil unconfined compressive strength value accurately because it gets a coefficient of determination value of 0.99229 which is almost close to number one.

This study employs the Stuart Hall model to analyse masculinity representations in BTS music videos from 2013 to 2021, examining their impact on the purchasing behaviours of the band’s predominantly female Indonesian fanbase. Through qualitative analysis involving five female fans, the research focuses on their perceptions of BTS’s videos, especially from their debut until the latest release before their conscription. Despite the assumption that female fans significantly drive sales through impulsive purchases in support of their idols, findings reveal that the varied masculinities portrayed do not substantially influence their buying decisions. Instead, these decisions are needs-based, indicating a pragmatic approach to consumerism. This research contributes to discussions on media influence, gender representation, and consumer culture, challenging the prevailing belief that fan purchasing is mainly driven by media portrayals and idol loyalty. It underscores the complex interplay of fan engagement and economic contribution in global pop culture, offering new insights into the dynamics of media consumption and fan behaviour.

The Indonesia-Australia Comprehensive Economic Partnership Agreement (IA-CEPA) is an ongoing inter-regional collaboration that provides a unique opportunity to study the impact of trade agreements on the development of Australian green economic investments in Indonesia. The author employs a descriptive research model to examine the research. As a result, Australian green economy projects in Indonesia have received increased funding and variety. However, conflicts between economic, environmental, and social factors are frequently unavoidable during the development process. As a result, the Indonesian government must immediately align policies by raising Environmental Social Governance (ESG) standards and involving the community in all stages of its development.

This research focuses on efforts to optimize data interoperability towards unified employment data in Indonesia, which consists of planning, manufacturing, integration, and marketing strategies using the Twitter social media account @kemnakerRI, which has the potential to provide valuable guidance for policy development, planning, and implementation of promotional strategies in future. Data analysis using NVivo 12 Plus comes from various media, news, and Twitter data support Revealing activity on social media accounts includes four main aspects. Planning (Planning) provided the most significant contribution, namely 24%, which reflects the awareness and maturity of the Ministry of Manpower’s strategy. Planning includes determining topics, scheduling placements, and using specific techniques to increase engagement. Content Creation accounts for 20%, indicating active efforts in producing informative material through graphics, infographics, videos, or text posts. Integration is 21% complete, meaning efforts to integrate information into broader initiatives and campaigns. Marketing activity (Marketing) of 19% shows that the @kemnaker social media account is an effective channel for marketing and promoting information related to One Employment Data, considering its benefits and success, as well as facing the challenges of differences in data standards, integration, and regulatory differences. The novelty of the research is that it combines social media data analysis to support the optimization of one employment data strategy.