Publication Search

This study presents a Systematic Literature Review (SLR) focusing on the application of the Branch and Bound (B&B) method in production optimization. In modern industry, achieving operational efficiency and profitability is essential, yet optimization often yields fractional solutions that are unrealistic for indivisible entities. The Branch and Bound method, as part of Integer Programming, has proven effective in addressing these constraints by converting fractional solutions into optimal integer values. This SLR analyzed 12 scientific articles published between 2016 and 2024, sourced from databases such as Google Scholar, Scopus, and SINTA. The analysis reveals that B&B is widely utilized to maximize production profit across various sectors, including spring beds, woven fabrics, bread, and furniture, often formulated as Integer Linear Programming (ILP) problems. Furthermore, this method is also applied to minimize production time and determine the shortest routes. Overall, B&B is a flexible and efficient tool that assists companies in managing resources and achieving maximum profit with realistic integer solutions.

The Qur’an contains a wealth of information and regulations regarding the Essence and purpose of the creation of the universe, including the process of human Creation. It describes several stages of human development starting from the prenatal Phase, namely the nutfah (sperm drop), alaqah (a clinging clot), mudghah (a chewed-like Lump of flesh), izam (formation of bones), and khalqan akhar (the formation of a complete Human being). In interpreting these stages, Ar-Razi applies a philosophical approach, while Hamka employs a scientific approach in their interpretations of Surah al-Mu’minun verses 12-14. The main issue explored in this study is how the two exegetes interpret Qur’an Surah al-Mu’minun verses 12-14 concerning the process of human creation. This research Is qualitative, employing a library research approach and a comparative method between Mafatih al-Ghayb and Tafsir al-Azhar. Data collection is conducted through Documentation techniques, which involve gathering relevant written or recorded Documents. The findings conclude that although both scholars present similar theories, They adopt different approaches. Ar-Razi interprets these verses as referring to the creation Of Prophet Adam and his descendants, whereas Hamka interprets them as describing the general process of human creation (the offspring of Adam).

The purpose of this study is to determine the trends and developments in corporate tax avoidance studies using a mixed method approach. This method includes a quantitative approach in bibliographic analysis and literature review. Data were collected through searching national and international journals indexed in Emerald, Springer, and Scopus by referring to relevant publications. Data analysis includes: (1) mapping trends and developments in corporate tax avoidance research with Vosviewer software based on bibliographic studies; and (2) identifying trends and issues in corporate tax avoidance through literature review. The results of the Vosviewer analysis found five large groups with 40 main topics after selection. All topics are explained comprehensively through a literature review. This study provides a comprehensive picture of themes that are often studied in previous literature, thus becoming a reference for further research.

This study aims to analyze the effect of variations in CVT spring constants (4.94 N/mm, 6.09 N/mm, and 7.38 N/mm) and roller masses (10 g, 13 g, and 15 g) on torque, power, and specific fuel consumption (SFC) of a 110 cc matic motorcycle. Testing was conducted using a dynotest to measure torque and power, and a measuring glass for fuel consumption at engine speeds of 5000–9000 RPM. Results showed a maximum power of 7.93 HP at 7000 RPM with a 10 g roller and 4.94 N/mm spring, the highest torque of 8.56 Nm at 6000 RPM with a 13 g roller and 4.94 N/mm spring, and the lowest SFC of 0.0689 kg/kWh at 9000 RPM with a 10 g roller and 6.09 N/mm spring. Two-Way ANOVA analysis indicated that all factors and their interactions significantly influenced engine performance (p-value < 0.05), with the statistical model showing an R-squared above 97%. The combination of a light roller and medium spring provided the best fuel efficiency, while heavier rollers were more optimal for torque at mid-range RPMs.

This research examines the matrilineal inheritance system in Minangkabau society through the perspective of maqasid al-sharia and the principles of Adat Basandi Syarak, Syarak Basandi Kitabullah (ABS-SBK). The matrilineal inheritance system which transmits inheritance through the mother's lineage is considered controversial in relation to Islamic law which is based on faraid. Through a qualitative approach using literature study and interview methods, this research analyzes the fatwas of Minangkabau female clerics which emphasize that the customary system can be in harmony with the main objectives of Islamic law, such as the protection of life, offspring, property and religion. The results show that female ulama see this system as a form of contextual ijtihad that considers justice and social benefit. The distinction between high inheritance (custom) and search property (divided according to Islamic law) reflects the flexibility in combining adat and sharia. Therefore, the Minangkabau matrilineal inheritance system is not only considered valid according to custom, but is also relevant to maqasid al-sharia.

Degenerative diseases such as cancer have a significant impact on overall health and are a leading cause of death worldwide. Identifying phytochemicals with potential preventive and therapeutic properties is crucial in combating these diseases. Apigenin, a flavonoid phytochemical, has garnered attention due to its potential role in cancer prevention and treatment. Therefore, the aim of this research is to prioritize an approach to cancer treatment based on more effective and fewer side effects. Apigenin, a plant-derived flavonoid, has received significant scientific consideration for its potential health-enhancing effects through modulation of inflammation, oxidative stress, and various other biological activities. This review utilizes online scientific articles from reputable platforms such as PubMed, Google Scholar, and Springer Link. The objective of this research is to explore the potential role of apigenin as a promising phytochemical in cancer prevention and treatment, elucidating its therapeutic mechanisms and future research directions.

The prevalence of cardiovascular disease has continued to increase over the years, leading the World Health Organization (WHO) to designate it as a global health threat. Pycnogenol, a proprietary name for proanthocyanidins—a specific class of bioflavonoids—is known for its potent antioxidant properties. It neutralizes unstable oxygen molecules, or free radicals, that damage body cells. One of the notable benefits of Pycnogenol is its positive effect on cardiovascular health. This study aims to evaluate the effects and potential benefits of Pycnogenol consumption in relation to cardiovascular disease. This article uses a literature review method by collecting scientific articles published within the last ten years (2014–2024) from reputable online sources such as PubMed, ScienceDirect, and SpringerLink. The results of the study show that Pycnogenol, as a phytochemical compound, plays a beneficial role in maintaining cardiovascular function and preventing heart disease, atherosclerosis, and other cardiovascular conditions. All reviewed articles consistently describe the connection between Pycnogenol intake and the prevention of cardiovascular diseases. In conclusion, Pycnogenol demonstrates strong antioxidant activity that may contribute significantly to the prevention and management of cardiovascular diseases.  

Emotion regulation is an important skill that every learner must have. The inability to manage good emotions will potentially interfere with the learning process and learners' well-being. The purpose of this literature review is to identify the effectiveness of Rational Emotive Behavior Therapy (REBT) in improving learners' emotion regulation. The method used in this research is literature review with research data sourced from Google Scholar and Springer publication databases. The results of the review show that REBT therapy can significantly improve learners' ability to manage their emotions. This research confirms that REBT can be an effective therapy in helping learners cope with negative emotions in an educational context.

Spring steel is one type of material that is widely used in various engineering applications, such as vehicle suspension systems and equipment that require resistance to dynamic loads. Spring steel possesses various mechanical characteristics that are strongly influenced by the microstructure of the material. These characteristics remain consistently affected throughout the entire material. Heating that occurs due to exposure to flame can alter certain microstructural properties of spring steel and affect its performance. In this study, an analysis was carried out on all changes in the microstructure of spring steel caused by flame heating, as well as its effect on the hardness of the material. The results of the study showed that heating can indeed cause changes in the microstructural phase and a decrease in fatigue resistance of the spring steel.

This study systematically analyses the predictive ability financial ratios have in relation to the emergence of financial distress among non-cyclical companies on the Indonesia Stock Exchange during the period 2020-2023. Secondary data was collected from a sample of 151 secondary data companies listed on the Indonesia Stock Exchange, spanning the years from 2020 to 2023. In order to ascertain the relationship between the independent variables (X1, X2, X3) and the dependent variable, Multiple Linear Regression models are utilised by employing the Eviews calculation application. As a model, the Springate model is employed, which is used to measure financial distress. The financial ratios selected for analysis encompass the liquidity ratio, the leverage ratio, and the profitability ratio. The findings of this study suggest that the profitability ratio exerts a substantial positive effect, or a moderate effect, on the phenomenon of financial distress. In contrast, the liquidity ratio and leverage ratio demonstrate an absence of statistically significant influence on the phenomenon of financial distress. Extensive analysis of the results indicates that financial distress, as measured by Springate, does not exert a substantial influence on the findings obtained from this study. The incorporation of diverse samples and models in subsequent studies is likely to introduce variations into the research outcomes.

This article discusses the opinions of Madurese Ulama' regarding Childfree through Family Planning (KB), and its relevance to Women's reproductive rights in Islamic Law adapted to the conditions of society in the modern era. Therefore, this research uses a qualitative method which is studied empirically and theoretically so that it is presented in a descriptive form that is in accordance with contemporary jurisprudence. Meanwhile, the purpose of this research is to find out the opinion of Madurese ulama regarding Childfree through Family Planning, considering that one of the purposes of marriage is to have offspring, several ulama of the Syafi'ie school of thought allow 'azl and express that 'azl is an act that abandons virtue. in carrying out sexual relations, therefore, in implementing Childfree there are several reasons that are permitted and several reasons that are prohibited. However, most Madurese ulama' prohibit Childfree if they decide, not just limit or withhold having children. This research also carried out interview techniques with 10 sources, resulting in different opinions. So in this research conclusions can be drawn about the relevance of the Family Planning Program in Childfree according to the opinion of Madurese Ulama', namely by limiting children.

COVID-19 is caused by the SARS-CoV-2 virus which infects the respiratory system and transmitted by droplets. This study aims to see the effect of administering Nigella sativa which has an immunomodulatory effect in reducing the clinical manifestations of COVID-19 disease by increasing the immune system. The method used is a literature review of five selected journals through a prism diagram flow from the PubMed, SpringerLink, and ScienceDirect electronic databases. Clinical manifestations of COVID-19 in patients decreased the length of patients’ hospital stay which become shorter in the intervention group compared to the control group. Nigella sativa has a positive response to increasing immunity. The immunomodulatory effect of NS is proven in increasing macrophage phagocytosis, immunoglobulin titer, lymphocyte ratio, and preventing T cell depletion and encouraging specific T cell proliferation.

Manufacturing companies in the textile and garment sector play an important role in the national economy, contributing to global development every year, creating jobs and encouraging domestic and foreign investment. However, the influence of globalization triggered by the influence of internal and external parties can cause many companies to experience financial difficulties. So researchers are interested in conducting research using secondary data in the form of annual financial reports. This study aims to evaluate financial ratios related to the company's financial distress conditions and identify factors causing financial difficulties in companies in the textile and garment sector listed on the Indonesia Stock Exchange in 2022-2023. This study uses the Springate (S-Score) method and logistic regression analysis with the results of the analysis showing that liquidity has a significant negative effect on financial distress, leverage has a positive insignificant effect on financial distress, and profitability has a significant negative effect on financial distress, and activity has a positive insignificant effect on financial distress.

COVID-19 is a viral respiratory disease that has caused a global health emergency and was declared a pandemic by the World Health Organization. The lack of certain drug molecules or treatment strategies for this disease is making it worse. Therefore, effective drug molecules are urgently needed to fight COVID-19. Specific therapies for the SARS-COV2 virus are still being developed in several countries around the world. One of the molecular targets that is thought to be specific to SARS-COV 2 is 3CLpro or the main protease of the COVID-19 virus which is an important enzyme to be able to replicate related viruses. The purpose of this study is to explore the role of medicinal chemistry in the development of anti-sars-cov 2 drugs through the exploration of bioactive compounds from natural sources, namely green tea. Green tea (Camellia sinensis) also contains eight native monomeric catechins or polyphenolic compounds. The method used was literature review with analysis of 3 selected articles from international databases such as PubMed, ScienceDirect, and Springer, as well as SINTA accredited national journals. The results showed that all test compounds except caffein had stronger binding energy than lopinavir. Epicatecin and catechin have the same binding energy value as lopinavir, which is -7.1 kcal/mol. Catechin gallate and epicatechin gallate have the strongest bond among all test compounds because they have the most negative AG, namely -9.0 and 8.2 kcal/mol.    

This research aims to develop interactive learning media based on android with iSpring Suite 9 which is feasible and effective in the learning process of Chassis Maintenance and Power Transfer. The type of research used is development research (Research & Development) using the ADDIE development model which has 5 stages namely Analysis, Design, Development, Implementation and Evaluation. The results of the research in the feasibility test of interactive learning media based on media validation by media experts obtained a score of 3.70 in the ‘very feasible’ category, learning design experts obtained a score of 3.71 in the ‘very feasible’ category, and material experts obtained a score of 3.96 in the ‘very feasible’ category. The results of the one to one trial of students obtained a score of 3.50 with the category ‘very feasible’, the small-scale trial of students obtained a score of 3.65 with the category ‘very feasible’, and the large-scale trial of students obtained a score of 3.71 with the category ‘very feasible’. The results of the research in the effectiveness test of interactive learning media are known based on the results of the pre-test and post-test there was an increase in value of 41.29, as well as the average N-Gain value of 0.77 in the high category with a percentage of 76.56% in the effective category. So it can be concluded that android-based interactive learning media using Ispring Suite 9 is very feasible to use as a learning media and effective to use because it can improve student learning outcomes in Chassis Maintenance and Power Transfer subjects in class XI TKR SMK Negeri 1 Percut Sei Tuan.

Water is the main need for every living creature, including humans. However, sometimes the springs are located under residential areas. To lift water to residential areas, large amounts of electrical energy are needed to drive water pumps. Apart from the very large electrical energy sources required, the price of water pumps is very expensive, it is necessary to develop alternative energy sources. An alternative energy source that has enormous potential in Indonesia is solar energy. Every year the sun releases 745 thousand trillion kWh of solar energy reaching the earth. In connection with the above, dedication was carried out regarding the design of the solar water pump. In the design of the solar water pump, a DC water pump is used with a solar power source using 3 solar panel modules. Through the Mitra Village Service SKIM, LPPM UNMUS 2024 Program, this service will examine the performance of the solar water pump, namely the maximum power produced by the solar panels, the water flow that can be lifted by the pump and the duration of operation in a day. The results of service activities in the form of technology that has been installed in partner plantations in Waninggap Nanggo Village, this technology is able to save on plantation operations, especially water pump electricity costs, by using solar power sources. Based on the analysis, electricity costs have been saved by 30%, thereby increasing partner income.

In an era of increasingly advanced technology, seabed mapping is very important in various fields, such as ship navigation, underwater infrastructure development, and marine environmental research. The use of a seabed sounding system at PT PAL has improved the quality of seabed mapping. The purpose of this study is to analyze the seabed at the PT PAL Surabaya pier in order to find out through seabed mapping using a bathymetric survey system and to find out the level of shallowing at each pier and which area is safe for ships to dock. This study uses a quantitative descriptive method. Pier sounding data using an echosounder tool at the PT. PAL Surabaya pier. The sounding data obtained starting from 2023 contains information about the depth of the pier, and will later be used to calculate Tool Correction, Fluctuation Correction, LWS (Low Water Spring) Correction, and Real Depth (actual depth). The results of the study show that based on the results of a bathymetric survey at PT. PAL in September 2023, the depth data at the West Peninsula pier is at a shallowest depth of 4 meters and the deepest is 6 meters. While the shallowest depth at the West Bandar pier is 3 meters and the deepest is 6 meters. At the North Peninsula pier the deepest depth is 8 meters marked with a solid green color. From these results it can be seen what ships can enter each particular pier area, namely ships that have a minimum draft of 2.65 m.

Background: Early detection of cervical cancer includes an IVA examination or Pap smear. This test is used to identify cervical cancer and in Islam it is also recommended to maintain (hifdz an-nafsa), namely maintaining reproductive health related to offspring (hifdz an-nasl). The aim of this research is to determine the effect of sharia-based audiovisual education on knowledge, behavior and attitudes towards preventing cervical cancer. Purpose: to determine the effect of sharia-based audiovisual education on knowledge, behavior and attitudes towards preventing cervical cancer. Method: This type of research uses quantitative with a quasi-experimental research design in the form of one-group without control and this research uses an accidental sampling technique with 41 respondents. Data was taken before and after the intervention was given and then analyzed statistically using the Wilcoxon test. Results: The results of the Wilcoxon test research showed that z knowledge calculation was -5.667, behavior -4.583, and attitude calculation -5.831 with an asym.sig value of 0.000. This shows that the p value <0.05 was a difference after the pre-test and post-test of providing audiovisual education. Conclision : There is an influence of providing audiovisual education on knowledge, behavior, attitudes, prevention of cervical cancer with early detection in the working area of ​​the Tlogosari Kulon Health Center, Semarang.

This research aims to describe government cooperation in handling the clean water crisis. With a qualitative descriptive approach, the research uses data collection techniques through interviews, observation and documentation. The results of the analysis relate to handling the water crisis by the government, NGOs and the community, making infiltration wells and greening the area around the springs. Regarding power and coercion, he emphasized that there has not been good cooperation between institutions, but each institution has its own participation in handling the water crisis, such as carrying out traditional rituals, using village funds to manage the water crisis, but there are problems such as, there is no good collaboration, management is still based on secular ego, participation between government, private sector and society is still limited. The crisis shows that every government and non-government institution, and the community, has a way to be involved in managing the drinking water crisis, such as coordinating with various parties, creating joint discussions involving the entire government and community, managing rivers, and cleaning water sources. The conclusion of the research is that there is good cooperation between government and non-government institutions starting from the community, village government, district sub-district through related agencies.

Revitalization of Sendang spring tourism has an important role in developing local culture-based ecotourism. This community service program aims to implement the Sendang spring tourism revitalization strategy to support the development of local culture-based ecotourism and identify revitalization strategies that are in accordance with ecotourism principles and maintain the cultural values ​​of the surrounding community. This service is carried out through various activities that include environmental conservation, strengthening the local economy, and preserving the culture of the surrounding community. The method used in this program is a participatory approach with community involvement in observation, training, and direct assistance. The results of the activities show that revitalization through a culture-based ecotourism approach can increase public awareness of environmental conservation, strengthen the local economy, and maintain cultural values. The main challenge in this program is building a balance between resource utilization and sustainable conservation efforts. The conclusion of this service confirms that the revitalization of Sendang spring contributes to increasing the attractiveness of ecological and cultural-based tourism, and provides benefits to the community in a sustainable manner.