Data Reduction Research Articles

Improving the Local Economy Through Diversifying the Use of Mangrove Forests as Marine Resources

Purpose: This research aims to 1) Analysis of the economic infrastructure around the mangrove forest on the local economy; 2) Identify potential and opportunities for diversification of mangrove forest use; 3) Development of optimal action plans including production, marketing, and sustainability strategy planning. The research was conducted in East Pentadu and West Pentadu Villages, Boalemo Regency, which is one of the mangrove forest locations in Boalemo Regency, Gorontalo Province.Design/Methodology/Approach: The research uses qualitative methods to analyze economic improvement through diversification of mangrove forest use. Data collection and data analysis techniques are carried out through observation and documentation with stages of data reduction, data presentation, and conclusion.Findings: The research results showed that the development of tourist attractions in East Pentadu Village by utilizing the mangrove forest area began in 2017 and West Pentadu in 2022 offers great potential for local economic development. With the background of the beach location in East Pentadu Village which used to be a place for mooring fishing boats and the beach in West Pentadu Village which was not used, these two locations have been transformed into attractive destinations for visitors, both from inside and outside Boalemo Regency. Regarding the use of mangroves in overcoming the problem of managing tourist attractions, several steps need to be taken by the village government and community including forming working groups and dialogue between elements of society.

Steam Condensation Scaled Experiment in the Presence of Non-Condensable Gases for Small Modular Reactor Containment Passive Safety

This study presents scaled experiments using steam condensation with non-condensable gas (NCG)—helium (He), simulating hydrogen, and nitrogen (N2)—as these experiments are pivotal for water-cooled reactor passive containment cooling system (PCCS) design and analysis. Research into PCCSs for small modular reactors (SMRs) is especially important in light of SMR system design; however, studies in the literature reflect limitations due to test geometry and operational condition variations, without considering SMR prototypic design. To address these challenges, a scaled test facility was developed to accurately replicate SMR PCCSs. This facility includes vertical down-flow condensing test sections with 1-, 2-, and 4-in.-diameter condensing tubes, accompanied by annular water cooling. Experiments were conducted using both superheated and saturated steam, with steam mass flow rates in the presence of NCG varying from: (a) 55 to 66 kg/hr. of steam, and 1.8 to 22 kg/hr. of He (as the NCG); (b) 58 to 63 kg/hr. of steam, and 4.4 to 13.3 kg/hr. of N2 (as the NCG). Test data were collected on (a) the axial temperatures of the annular cooling water; (b) the outer wall temperature of the condensers; and (c) the mass flow rate, temperature, and pressure at the test section inlets and outlets. These primary test data were used in conjunction with a standard data reduction methodology to estimate essential thermal parameters such as heat fluxes, heat transfer coefficients, and condensation rates. The effects of NCGs on steam condensation within the geometry of the scaled test sections were then presented in regard to various testing conditions.

Identification of Scientific Knowledge of the Patehan Tradition of Yogyakarta Palace as a Source of Natural Science Learning

The integration of local wisdom into science learning faces challenges due to the focus on theoretical understanding rather than real-world applications. Teachers often overlook the potential of local wisdom in science education, and the process of incorporating cultural phenomena as scientific learning topics is perceived as complex. This study aims to identify the scientific knowledge embedded in the "Patehan" tradition of the Yogyakarta Palace. The research follows a qualitative ethnographic approach with a sample of five respondents selected via purposive sampling from the Patehan servants. Data collection involved interviews, observations, and documentation, with internal validation for data accuracy. Data analysis was carried out interactively through three stages: data reduction, data presentation, and conclusion drawing. The results indicate that the "Patehan" tradition contains scientific knowledge across four main aspects: biology, physics, chemistry, and earth and space sciences. These findings highlight the potential of local wisdom, such as the "Patehan" tradition, to enhance students' understanding of science concepts

Strategi Komunikasi Pengurus Pesantren Dalam Meningkatkan Motivasi Belajar Santri Darussalam Blokagung 2 Desa Setail Kecamatan Genteng Kabupaten Banyuwangi

Communication in education is a very important element and has a very large role. Effective communication in education is very necessary, communication can be considered effective and conducive when the communicant can receive and understand the contents of the message conveyed by the communicator. Communication strategies are very important to learn for Islamic boarding school administrators in order to achieve messages or learning motivation effectively. However, not all Islamic boarding school administrators can create good communication strategies, sometimes administrators even ignore the communication aspect where Islamic boarding school administrators only convey messages without thinking about how the message can be received well by students. The purpose of this study was to determine the communication strategies used by Islamic boarding school administrators to motivate students to learn Darussalam Blokagung 2 Setail Village, Genteng District, Banyuwangi Regency. And to determine the supporting and inhibiting factors of the communication strategy of Islamic boarding school administrators. The type of research used by the researcher is qualitative research. This research is classified into the type of field research. The approach that the researcher will use is a descriptive approach. To test the validity of the data, the researcher uses extended observation, increases persistence, and triangulation. All data that has been collected is analyzed using data collection analysis, data reduction, data display, and drawing conclusions. The results of the study show that effective communication strategies and providing positive feedback are the main keys to increasing students' learning motivation at the Darussalam Blokagung 2 Islamic Boarding School, Setail Village, Genteng District. These supporting factors create a positive learning environment, support the development of students, and motivate them to achieve higher achievements.

Analisis Pemanfaatan E-Arsip pada Bagian Administrasi Kementerian – Kementerian Keuangan

This research employs a qualitative method with a case study approach. Data analysis was conducted through stages of data collection, reduction, presentation, and verification. The unit of analysis in this study is the utilization of e-archive systems in the administrative department of the Ministry of Finance. The results show that the implementation of e-archive systems, such as NADINE and the archiving module in the Satu Kemenkeu super app, has improved the efficiency and effectiveness of document management. The system simplifies filing, retrieval, and document distribution processes while supporting paper usage reduction. However, challenges remain, including limited technological infrastructure, lack of technical competence among human resources (HR), and data security risks. To address these issues, it is necessary to develop HR skills through training and technical guidance, improve technological infrastructure, and maintain systems regularly. Data protection efforts have also been implemented through the use of authenticators, identity verification, antivirus software, and firewalls managed by Pusintek. Recommendations include developing a more user-friendly system and conducting further studies with a quantitative approach in different locations to enrich findings. These optimization strategies are expected to ensure the security, confidentiality, and effectiveness of electronic archive management comprehensively.

Large-Scale Multiple Testing of Composite Null Hypotheses Under Heteroskedasticity

Abstract Heteroskedasticity poses several methodological challenges in designing valid and powerful procedures for simultaneous testing of composite null hypotheses. In particular, the conventional practice of standardizing or re-scaling heteroskedastic test statistics in this setting may severely affect the power of the underlying multiple testing procedure. Additionally, when the inferential parameter of interest is correlated with the variance of the test statistic, methods that ignore this dependence may fail to control the Type I error at the desired level. We propose a new heteroskedasticity adjusted multiple testing procedure that avoids data reduction by standardization, and directly incorporates the side information from the variances into the testing procedure. Our approach relies on an improved nonparametric empirical Bayes deconvolution estimator that offers a practical strategy for capturing the dependence between the inferential parameter of interest and the variance of the test statistic. We develop theory to show that the proposed procedure is asymptotically valid and optimal for FDR control. Simulation results demonstrate that our method outperforms existing procedures with substantial power gain across many settings at the same FDR level. The method is illustrated on an application involving the detection of engaged users on a mobile game app.

Efforts of Islamic religious education teachers in improving the reading and writing skills of the Quran among the residents of Banyon village

The ability to read and write the Qur'an is one of the basic competencies that are important for Muslims. However, there are still many people, especially in rural areas such as Kampung Banyon, Sragen, who do not have adequate Qur'an reading and writing skills. This study aims to identify and describe the efforts made by Islamic Religious Education (PAI) teachers in improving the ability to read and write the Qur'an among residents of Kampung Banyon. This study uses a qualitative approach with a descriptive research type. Data collection techniques used are interviews, observations, and documentation. Data analysis is carried out through data reduction, data presentation, and drawing conclusions. The results of the research show that the efforts made by Islamic religious education teachers to improve the ability to read and write the Al-Qur'an in Banyon Village are to create a program of Al-Quran reading and writing activities every Monday and Friday on a regular basis, an inclusive approach to all levels of society, and the formation of Al-Futuh Foundation.

Transformation of Visionary and Collaborative Leadership Styles in Contributing Publication Innovation of Madrasah Aliyah

This research aims to interpret the transformation of visionary and collaborative leadership styles in madrasah publication innovation. The object of this research is educational consumers MAN 2 Banyuwangi, This research design uses a qualitative approach with a case study method, The source of informants in this study consisted of the head of the madrasa, and teachers. MAN 2 Banyuwangi. Data collection in this study was carried out through in-depth interviews, direct observation, and publication documentation, Data analysis in this study uses an interactive analysis model developed by Miles, Huberman, which includes three main steps: data reduction, data presentation, and conclusion drawing. The results of this study indicate that the visionary and collaborative leadership styles at MAN 2 Banyuwangi are successful in contributing the publication innovation. The collaborative leadership strengthens educational community networks, transformation for resource management and innovation, to increasing Madrasah reputation.

Factors Influencing the Decrease in Visitors to Mampie Beach Tourism, Galeso Village, Wonomulyo District, Polewali Mandar Regency Mandar

One of the tourist attractions, especially a very famous beach destination, is Mampie beach which is located in Gleso village, Wonomulyo district, Polewali Mandar district. The Mampie Beach Natural Tourism Area is located in Mampie Hamlet, Galeso Village, Wonomulyo District, Polewali Mandar Regency. This beach, which has a coastline of approximately 3 kilometers, can be reached by two-wheeled or four-wheeled vehicles with a travel time of approximately 30 minutes from Wonomulyo District, which is the trade center of Polewali Mandar Regency. This research was conducted to find out the factors that caused the decline in visitors at the Mampie beach location using qualitative methods by conducting observations, interviews and studying literature and websites on several sites which contain several photos and references from the golden age of this tourist location . The method used in this research is qualitative with observation, interviews and documentation with data analysis techniques: Data Reduction, Data display (Data Presentation) Conclusion Drawing Verification (drawing conclusions). The results of research include several factors that influence the decline in visitors to Mampie beach, namely coastal abrasion and natural disasters, earthquakes. Covid 19, services,Road access to the location, supporting facilities and conflicts of interest between managers and the community.

Super Partition: fast, flexible, and interpretable large-scale data reduction in R.

As data sets increase in size and complexity with advancing technology, flexible and interpretable data reduction methods that quantify information preservation become increasingly important. Super Partition is a large-scale approximation of the original Partition data reduction algorithm that allows the user to flexibly specify the minimum amount of information captured for each input feature. In an initial step, Genie, a fast, hierarchical clustering algorithm, forms a super-partition, thereby increasing the computational tractability by allowing Partition to be applied to the subsets. Applications to high dimensional data sets show scalability to hundreds of thousands of features with reasonable computation times. Super Partition is a new function within the partition R package, available on the CRAN repository (https://cran.r-project.org/web/packages/partition/index.html).

EFEKTIVITAS INDUSTRI EMAS UNTUK MENINGKATKAN PENDAPATAN UMKM (STUDI NASABAH UMKM DI PEGADAIAN NGAWI)

This research aims to analyze the impact of gold investment at Pegadaian on the income of Micro, Small and Medium Enterprises (MSMEs) in the Ngawi area, East Java and identify what factors influence MSMEs in utilizing gold investment services at Pegadaian Ngawi, as well as what efforts can be made. carried out to increase the participation of MSMEs in gold investment. Data was collected through interviews, observations, documentation and observation. Data analysis is carried out using data reduction, data presentation, and drawing conclusions or verification. Data validity methods use theoretical triangulation, data source triangulation, method triangulation, time triangulation and inter-researcher triangulation. The research results show that PT. Pegadaian (Persero) in Ngawi Regency, East Java, has had a positive impact on MSMEs through gold pawning services, which facilitate access to capital and support local economic growth. Apart from that, Pegadaian also increases financial literacy through education, helping MSMEs understand gold investment. However, MSME participation is still limited due to low financial awareness and accessibility. To overcome this, it is necessary to carry out intensive education, increase access to technology, and transparency in the investment process. This step is expected to make Pegadaian an agent of change for economic growth and financial independence of MSMEs in Ngawi.

Application of Loose Part Media to Improve Numeracy Development of Children Aged 5-6 Years

The lack of motivation of children to learn numeracy is due to the tools used in delivering material that are not interesting, teachers always use worksheets, the methods used by teachers are less varied, teachers' creativity in utilizing the materials around them is still lacking so that children feel bored and tend to play alone without paying attention to the material presented by the teacher. Therefore, researchers will use loosepart media to improve children's numeracy development. This study uses a qualitative method with a descriptive approach that aims to determine the level of numeracy development through loose part media in children aged 5-6 years in kindergarten. The subjects of this study are teachers and students of class B6 and the informants of this research are principals and teachers. Data collection techniques use observation, interviews, and documentation. The data validity technique uses source triangulation and triangulation techniques. Data analysis techniques use data reduction, data presentation and conclusion drawn. The results of the study show that the application of loose part media to improve the numeracy development of children aged 5-6 years in kindergarten has been carried out through learning activities. Factors that support the application of loosepart media to improve children's numeracy development include natural factors, cognitive development factors, social background factors, learning motivation factors, teacher development factors, facilities and infrastructure factors, while the factors that hinder are environmental factors and teacher development factors.

The Effect of Loose Part-Based Steam Learning on Improving Fine Motor Skills in Children Aged 5-6 Years

In the current era, science and technology (IPTEK) is growing and developing. In facing the 21st century, humans must have 4C skills. Developing the 4C skills can be done through a learning process that contains STEAM based on Loose Parts. However, the reality is that there are still early childhood education institutions that apply classical learning, so they are considered less than optimal in providing stimulation of 4C skills for children from an early age. The purpose of this study is to provide an overview in the form of a description of the implementation of STEAM learning based on the Loose Part. For children aged 5-6 years at Pembina Wotu State Kindergarten. This study uses quantitative research. The data collection technique consists of observation, interviews, and documentation. The data validity technique uses data source triangulation and method triangulation. Data analysis techniques consist of data collection, data reduction, data presentation, and conclusion. The results of this study show that the implementation of Loose Part-based STEAM learning for children aged 5-6 years at Pembina Wotu State Kindergarten is well organized.

Strengthening Tolerance Character as A Form of Civic Disposition Through Community Engagement In Multicultural Societies

The character of tolerance is important to be developed in a multicultural country like Indonesia. Communities in society need to be developed massively to participate in providing understanding related to diversity, tolerance, and peace. This community can play a role in strengthening the character of tolerance as a form of citizenship for Indonesian citizens. This study aims to describe the role of the community in strengthening the character of tolerance based on a multicultural society, and analyze the implications of activities to strengthen the character of tolerance by the community in developing civic character. This research uses a case study method with a qualitative approach and with research techniques in the form of interviews, observations, and documentation. The data analysis in this study uses the Miles, Huberman, and Saldana model, namely data collection, data reduction, data presentation, and conclusion drawn. The results of this study show that 1) the role of the SRILI community in strengthening the character of tolerance based on a multicultural society is by holding activities such as conflict resolution training, interfaith dialogue, and overcoming prejudice. 2) Strengthening the character of tolerance can have implications for civic dispositions such as respect for diversity, being inclusive and open, respecting minority rights, commitment to Pancasila, and training critical and reflective thinking skills.

Internalization of Religious Character Values through Discussion Activities Ngopi Bengi at IPNU-IPPNU Tahunan Branch

This study aims to analyze the process of internalizing religious character values through ngopi bengi discussion activities at IPNU-IPPNU Ranting Tahunan. This research is the result of field research at IPNU-IPPNU Ranting Tahunan. This research was conducted using a qualitative approach and a qualitative descriptive method. The data collection techniques were carried out by observation of Ngopi Bengi Discussion activities, interviews with the chairman and members of IPNU IPPNU, and documentation. The data analysis techniques used were data reduction, data presentation, and conclusion drawing. The results showed that the process of internalizing religious character values through Ngopi Bengi discussion activities in IPNU-IPPNU Ranting Tahunan could be one of the means of a religious organization to improve character values, responsibility, patience, discipline, caring, tolerance, and spirituality. Ngopi Bengi discussion activities are not only a means to deepen religious knowledge by discussing with the cleric, but also to shape participants' religious character values for the better through application in everyday life. With an approach based on spiritual, social, and competition education, this activity proves the relevance of religious character internalization methods in facing modern social challenges. Keywords: Character Value, Religious, religious discussion

Access and Utilization of Agricultural Information by Horticultural Farmers in Raoda Village, North Kolaka Regency

The success of farming can be influenced by access to agricultural information. However, not all farmers can access and utilize information quickly and accurately. This research aims to analyze the level of access and sources of information, as well as the utilization of horticultural agricultural information by farmers in Raoda Village. The study uses a survey method with 35 horticultural farmers as respondents. Additionally, the research is supported by qualitative data. Qualitative data consists of in-depth interviews with relevant stakeholders, including the Village Head, Chair of the Farmers Group (Gapoktan), community leaders, village officials, and female farmers. Qualitative data is analyzed through data reduction, presentation, and verification, while quantitative data is analyzed using cross-tabulation and frequency tables with Microsoft Excel 2010 and SPSS for Windows 20.1. The study’s results indicate a relationship between the level of information access and its utilization. Low access levels lead to low utilization, mainly due to inadequate facilities and infrastructure for farmers to access information, making it challenging for them to utilize it effectively. Keywords: Access to information, horticulture farmers, north Kolaka Regency, Raoda village, utilization of information

A problem-agnostic approach to feature selection and analysis using SHAP

Feature selection is an effective data reduction technique. SHapley Additive exPlanations (SHAP) can be used to provide a feature importance ranking for models built with labeled or unlabeled data. Thus, one may use the SHAP feature importance ranking in a feature selection technique by selecting the k highest ranking features. Furthermore, this SHAP-based feature selection technique is applicable regardless of the availability of labels for data. We use the Kaggle Credit Card Fraud detection dataset to simulate three label availability scenarios. When no labeled data is available, unsupervised learners should be used. We explore feature selection for data reduction with Isolation Forest and SHAP for this case. When data of one class is available, a one-class classifier, such as Gaussian Mixture Model (GMM) can be used in combination with SHAP for determining feature importance, and for feature selection. Finally, if labeled data from both classes is available a binary-class classifier can be used in conjunction with SHAP for data reduction. Our contribution is to provide a comparative analysis of features selected in the three label availability scenarios. Our primary conclusion is that feature sets may be reduced with SHAP without compromising performance. To the best of our knowledge, this is the first study to explore a feature analysis technique, applicable in the three label availability scenarios.

Strategic Management of Madrasas in Improving Accreditation of Guppi Nurul Jadid Mts in Sumber Sari Village, Tungkal Jaya Sub-District, Musi Banyuasin District

This study is based on the accreditation of madrasahs which are still C in the last two accreditation assessments. Strategic management is an approach that can provide an effective framework for achieving educational goals and improving madrasah accreditation. The researcher raised the planning, implementation, evaluation, and strategic management can improve accreditation at MTs Guppi Nurul Jadid. This study uses a descriptive qualitative approach through case studies. Data sources consist of primary and secondary. Data collection techniques with observation, interviews, and documentation. Data analysis techniques used are data reduction, data presentation, and drawing conclusions and data validity. The results of the study indicate that the strategic planning process for improving accreditation at MTs Guppi Nurul Jadid includes developing a vision and mission, identifying external opportunities and threats of an organization, and designing strategies to achieve goals to improve accreditation. The implementation of strategic management in improving the accreditation of MTs Guppi Nurul Jadid includes activities to determine madrasah policies, provide motivation by the head of the madrasah, allocate existing resources, and develop a culture that will support the implementation of the strategy. The strategic management evaluation process in improving accreditation includes monitoring activities for educators, education staff, and students and supervising institutional programs. Strategic management can improve madrasah accreditation at MTs Guppi Nurul Jadid through cooperation with all stakeholders and the community, periodic monitoring and evaluation, and human resource development. Keywords: Management, Strategic, Accreditation Improvement, Madrasah

RACEME: Embedded Intelligence for Correlation-driven Predictive Energy-harvesting Management in LoRa Networks

The prolonged lifetime of energy-harvesting (EH) LoRa networks requires that all EH LoRa sensors utilize available harvested energy in an energy-neutral manner to avoid power failures. This requirement is challenging to fulfill due to the unpredictability of ambient energy sources and the spatio-temporal heterogeneity of sensors’ harvesting abilities. We present RACEME, a novel predictive EH-management framework by exploiting the embedded intelligence capability of energy-harvesting LoRa devices. It empowers energy-neutral operation in EH LoRa networks by leveraging the spatio-temporal correlation between EH LoRa sensors to optimize the harvested energy utilization. RACEME is an integrated system that consists of embedded machine learning (ML) for predictive EH management on the sensors and online cluster-based data reduction and recovery on the server. To maximize the accuracy of EH predictions, RACEME allows each sensor to implement an ML pipeline locally. Coupled with the cluster-based data-reduction feedback from the server, RACEME enables the sensors with higher harvested-energy availability and communication quality to transmit critical data more frequently in a probabilistic manner without sacrificing data quality. Compared with the state of the art, the experimental results reveal that RACEME improves EH prediction accuracy, network lifetime, and transmission overhead by up to 1.7, 2, and 8 times, respectively.

Implementasi Moderasi Beragama pada Budaya Organisasi Madrasah di MAN 3 Aceh Tenggara

The aim of this research is to analyze national commitment, tolerance, non-violence and accommodating local culture in the organizational culture of MAN 3 Aceh Tenggara. This research uses a qualitative approach with a case study approach carried out at MAN 3 Aceh Tenggara. Data collection techniques are through observation, interviews and documentation. Data analysis techniques through triangulation, namely data reduction, data presentation and data verification. The research results show (1) national commitment is implemented through respecting diversity, mutual cooperation, concern for the nation and national pride, (2) tolerance is implemented through respecting differences in religious beliefs and practices, an open attitude towards inter-religious dialogue, avoiding religion-based discrimination, and building solidarity in diversity, (3) non-violence implemented by peaceful conflict resolution, respect for human rights (HAM), controlling emotions and assertive attitudes, and peace education, and (4) accommodating local culture implemented by respecting local traditions and customs , integration of religious and cultural values local, maintenance and preservation of positive traditions, tolerance for cultural diversity, and intercultural and religious dialogue.