bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessing Voltage and Frequency Instability in Renah Kemumu's Micro Hydro Power Plant
Authors: Tessal Dasrinal , Candra Joko , Manab Abdul , Corio Dean
Published: June 2024

The increasing demand for energy and the need for environmental sustainability have led to the adoption of renewable energy sources, such as micro-hydropower plants (PLTMH), in isolated communities in Indonesia. However, voltage and frequency instability issues are commonly encountered in PLTMH systems, which undermine their performance. In 2009, a micro-hydropower plant with a capacity of 30 KW was built in Renah Kemumu village.  Ranah Kemumu village is located in Jangkat sub-district, Merangin district, Jambi province. In this study, the voltage and frequency instability of PLTMH in Renah Kemumu Village were investigated. The methodology employed in this study was observational. The voltage and frequency data were measured and recorded during peak load hours from 18.00 to 21.00 over one month. The percentage increase relative to the standard voltage and frequency was calculated. Boxplots were generated to visualize the distributions. The voltage measurements showed maximum and minimum values of 270 V and 264 V, representing increases of 22.72 % and 20.45% from the 220 V (standard set by the power utility (PLN)). The frequency ranged from 66.32 Hz to 57.46 Hz, corresponding to 30.92% and 14.92% deviations from the 50 Hz (standard set by the power utility (PLN)).  These values exceeded the tolerance limits of the State Electricity Company of Indonesia. The analysis indicates that the voltage and frequency levels at the PLTMH in Renah Kemumu Village are unstable during peak loads, with fluctuations stemming from changing water flows, load currents, and weather conditions
Analisis Hasil Studi Kasus Kalibrasi Pressure Transmitter dengan Metode Zero Calibration
Authors: Fatimah Laila Aida , Hidayat Rahmat
Published: June 2024

Dewasa ini, dunia industri terus berkembang secara pesat, dan peran instrumentasi menjadi sangat krusial dalam menjaga efisiensi dan juga kendali operasi. Teknologi instrumentasi industri, seperti pressure transmitter, menjadi penting digunakan di berbagai sektor industri untuk mengukur tekanan liquid atau fluida. Namun, alat ukur memerlukan  upaya kalibrasi secara berkala sebagai bentuk pemeliharaan ataupun saat instrumentasi tersebut tidak mampu membaca secara akurat pada kondisi tertentu. Ketidakakuratan pembacaan menyebabkan dampak yang signifikan pada suatu proses. Sebagai upaya bentuk perbaikan. Metode zero calibration menjadi salah satu teknik penting dalam memastikan alat dapat membaca nilai nol yang tepat saat tidak adanya input atau masukan. Sehingga mampu meningkatkan akurasi pengukuran secara keseluruhan Studi kasus ini dilakukan di salah satu industri, industri  ini menggunakan pressure transmitter untuk mengukur tekanan buburan kertas sebesar maksimal 6 bar pada proses sebelum dan setelah refining. Refining adalah sebuah proses mekanis yang melibatkan penggunaan mesin refiner untuk menggiling bubur serat atau pulp guna menghasilkan serat yang lebih halus dan optimal dalam pembuatan kertas. Sehingga, penting menjaga hasil pengukuran pressure transmitter tetap akurat dengan kalibrasi sehingga tidak mengganggu berjalannya proses dan menghasilkan efisiensi operasional untuk menjaga kualitas produk. Sebelum dilakukan kalibrasi menggunakan metode zero calibration, pressure transmitter menunjukkan kesalahan rata-rata 2,702%, setelah melakukan kalibrasi dengan metode zero calibration, nilai rata-rata error turun mencapai 0,148%. Hal ini menunjukkan peningkatan yang signifikan dalam akurasi pengukuran. Sehingga disimpulkan bahwa pressure transmitter tersebut masih layak digunakan pada proses refining di Industri tersebut.
Sistem HIPOI 1.0: Hidroponik Indoor Berbasis Internet of Things untuk Tanaman Selada dengan Teknik NFT
Authors: Musayyanah  , Harianto  , Adrianto Yosef Richo , Budiardjo Hardman
Published: June 2024

IoT merupakan salah satu istilah teknologi yang telah diterapkan di berbagai macam sektor, salah satunya adalah sektor pertanian. Hidroponik merupakan pertanian modern yang berfokus pada pertumbuhan tanaman tanpa menggunakan media tanah, yang sangat cocok diterapkan di lingkungan perkotaan. Penerapan IoT pada hidroponik dilakukan dengan sistem pemantauan dan kendali yang dapat membantu kinerja para petani hidroponik. Penelitian ini menggunakan mikrokontroler ESP 32, sensor nutrisi, sensor suhu, RTC dan platform aplikasi IoT Panel MQTT. Sistem IoT bekerja dengan dua mode yakni mode otomatis dan mode manual. Hasil penelitian menunjukkan bahwa sensor TDS bekerja secara stabil pada rentang nilai 900 ppm, rerata presentasi error dari sensor suhu sebesar 0,84%, Lampu growlight dan pompa sirkulasi bekerja sesuai dengan penjadwalan dan transmisi data ke broker dari MQTT berhasil 100%. Pengujian keseluruhan sistem berhasil 100 % ditandai dengan peningkatan pertumbuhan selada yang significant.
IoT-Based Vaname Shrimp Pond Water Quality Monitoring Using the Quamonitor Tool
Authors: Syafirah Marwana , Eso Rosliana , Husein
Published: June 2024

Pond water pollution is the main problem in vannamei shrimp cultivation, so to overcome this problem, The decline in water quality is caused by a decline in the quality of pH, salinity and temperature in pond water. Researchers created the Quamonitor tool to monitor IoT-based vaname shrimp pond water. The research was conducted using the Research and Development (R&D) method with the Analyze, Design, Develop, Implement and Evaluate (ADDIE) model, assisted by WiFi, MQTT and Node Red networks to monitor water in order to display monitoring results on Android. This study aims to monitor the condition of vaname shrimp pond water quality in the form of pH, temperature, and salinity parameters using pH E-4052C sensor, DS18B20 temperature sensor, TDS/Conductivity DFRobot V1.0 sensor and NodeMCU ESP32 as a data manager and system controller that runs in real time. The test results of PH sensors, temperature sensors and TDS/conductivity sensors obtained a sensor error percentage of 0.29% for pH parameters, 1.7% for temperature parameters and 0.41% for salinity parameters. Based on the sensor error value, Thingspeak graph display, real time monitor display on Android, it can be said that the manufacture of the Quamonitor tool for IoT-based vaname shrimp pond water quality monitoring is successful and can function well
Desain dan Analisis Pencahayaan Gedung Bengkel Universitas Negeri Manado
Authors: Mamahit Calvin , Pangestu Prayogi
Published: June 2024

Tujuan dari penelitian ini adalah untuk mendesain dan menganalisis pencahayaan Gedung Bengkel Universitas Negeri Manado. Penerangan alami dan buatan diperlukan untuk aktivitas manusia sehari-hari di luar dan di dalam bangunan. Penerangan harus memenuhi standar yang dituangkan dalam SNI dan Peraturan Menteri Kesehatan No. 70 Tahun 2016 tentang Standar Intensitas Cahaya. Salah satu tujuan penerangan gedung adalah untuk memberikan penerangan yang cukup sekaligus mengurangi bahaya kecelakaan. Berdasarkan uraian tersebut, penulis tertarik untuk mempelajari lebih lanjut dan menyelidiki standar pencahayaan yang ada pada fasilitas bengkel UNIMA saat ini. Penulis menggunakan survei dan analisis kebutuhan, kemudian melakukan pengembangan dengan merancang kebutuhan penerangan. Hasil perancangan tersebut langsung diimplementasikan pada proyek instalasi penerangan, lalu kembali dianalisis keefektifan dan efisiensi penerangan itu. Penulis memperoleh data penelitian untuk evaluasi dengan melakukan studi kasus dimana data dikumpulkan, diolah, dibandingkan, dan dievaluasi. Penulis menggunakan teori dasar dimana intensitas cahaya berbanding lurus dengan fluks cahaya, jumlah titik pasang, dan rugi-rugi cahaya, serta berbanding terbalik dengan luas ruangannya. Ada tujuh ruangan yang dianalis, yaitu lima ruang pendukung, satu ruang kerja utama, dan ruang toilet. Hasil penelitian menunjukkan intensitas cahaya pada ruang bengkel UNIMA rata-rata 144,2 lux dan area kerja 191,06 lux. Perhitungan serta analisis banyaknya lampu yang dipakai supaya terpenuhi kriteria SNI, adalah 54 LED bervariasi daya 10, 22, 20, dan 40 watt
Perhitungan Volume Stockpile dan Pengoptimalan Waktu Pengolahan Stockpile 3, 5 dan 6 Terhadap Produksi Alat Gali muat dan Alat Angkut pada TB Primer Batubesi PT Timah Tbk
Authors: Sherina Neni , Franto Franto , Mardiah Mardiah
Published: June 2024

PT Timah Tbk's Batubesi Primary Large Mine has experienced a significant decline in production in recent years, causing a change in the mining process to stockpile management that is still economical with a grade of 0.2%. This study aims to determine the volume and production of stockpiles 3, 5 and 6, the type of sediment and Sn content of stockpile material and the time required to spend stockpile material 3, 5 and 6 in order to get the optimal time. The method used is a quantitative method by taking cycle time data as much as 30 data and analyzing sample levels using XRF on each stockpile. The results of this study obtained the volume of stockpile 3 material is 132,648.42 m3,, stockpile 5 is 162,570.25 m3, and stockpile 6 is 33,090.19 m3. The calculated machine productivity at stockpile 3 is 42.17 tons/hour, stockpile 5 is 48.11 tons/hour and stockpile 6 is 39.53 tons/hour. The highest Sn content is found in stockpile 6 which is 0.33% with the type of skarn sediment. While the lowest Sn content is found in stockpile 3 which is 0.2% with oxide clay sediment type. In stockpile 5, the Sn content is 0.31% with the type of oxide clay sediment. The remaining volume of stockpile material in stockpiles 3, 5 and 6 can be spent with a time of 2.78 years using 1 unit of excavation equipment and 1 unit of transportation equipment. Optimization is carried out so that the remaining stockpile reserves can be spent within 1.74 years using 1 unit of excavation equipment and 2 units of transport equipment.
ANALISIS LAPORAN KEUANGAN UNTUK MENGUKUR KINERJA KEUANGAN PT BANK RAKYAT INDONESIA (PERSERO) TBK
Authors: Ayunisa Wisheila Inzaghia , Imron Muhammad , Susanto Andik
Published: June 2024

This study aims to determine the financial performance of PT Bank Rakyat Indonesia (Persero) Tbk using the rations of liquidity, profitability, and solvency. This type of research is a type of quantitative descriptive analysis research with data collection techniques used are documentation and literature study. The data analysis techniques used is the analysis of liquidity, solvency, and profitability rations. The sample in this study is the balance sheet and profit/loss statement for the last 4 years published from the official website www.bri.co.id for the period 2019 to 2022. the result showed that the liquidity rations, namely the quick ratio, asset to loan ratio, and loan to deposit ratio (LDR) were in very good condition in accordance with BI standarts. In the profitability ratio, namely net profit margin, return on asset, and return on equity in a very good condition in accordance with BI satndarts. And in the solvency ratio, namely the primary ratio, capital ratio, and capital adequacy ratio (CAR) in very good condition in accordance with BI standarts.
ANALISIS DAMPAK IMPLEMENTASI STRATEGI CROSS SELLING PADA PENAMBAHAN DANA PIHAK KETIGA SERTA PENAMBAHAN JUMLAH NASABAH FUNDING DI PERUMDA BPR BANK DAERAH KOTA MADIUN
Authors: Handaru Agnyana Handaru , Choirum Rindah Istiqaroh  , Novy Rachma Herawati  , Paris Cahyono
Published: June 2024

The main objective of this research is to investigate how the cross-selling strategy is applied and how it affects the collection of third party funds. Second, examine the obstacles to cross selling strategies in raising third party funds. Third, look into how the cross-selling approach is being used and how that is affecting the amount of money raised for third party funds. This study uses a field research methodology and is qualitative-descriptive in nature. Madiun City Regional Bank, People's Credit Bank (BPR), and Regional Public Company (Perumda) served as the research subjects. This study's objective is to develop a cross-selling strategy that will boost third-party funding. Documentation, interviews, and observation are methods used to collect data. The three stages of the data analysis procedure were data reduction, data display, and conclusion drawing. To determine the veracity of the data, take into account using source triangulation. First, the research's findings indicate that the Tabunganku Product becomes the primary account when cross-selling is implemented. Furthermore, you can get other services, namely having more than one savings product account, lower credit interest, receiving deposit interest and disbursing credit through your Tabunganku account. Second, the obstacles are competition with conventional banks, savings cannot be disbursed at any time, and lack of communication with customers. Third, the impact that arises is customer loyalty, increasing income, reducing time and costs, and maintaining public trust in using third party fund products.
ANALISIS PENDAPATAN UNTUK MENINGKATKAN LABA BERSIH PADA KOPERASI PEGAWAI REPUBLIK INDONESIA TUTWURI DIKBUDMORA KOTA MADIUN
Authors: Karyawati Danik , Supriyatun  , Kusumawardhani Eny , Efendi Mohamad Nur
Published: June 2024

This research aims to determine the level of income growth and net profit growth, and whether the increase in income each year is always followed by income growth in the following year. Likewise, whether the increase in net profit each year is followed by growth in net profit in the following year. The research object is KPRI Dikbudmudora which is located in the city of Madiun. Using Income data, Operational data, and Tax data from KPRI Dikbudmudora Madiun city from 2019 to 2021. The data analysis technique uses descriptive analysis techniques. The data collection technique used is documentation. The results of this research show that the income and net profit at KPRI Dikbudmudora, Madiun City in 2019-2020 has increased every year, however, the level of efficiency in the company's operational expenses has decreased, so this is one of the factors causing the growth rate of income and net profit. The company's net income fluctuates every year.
Pentingnya Penerapan Akuntansi Pesantren Study Pada Pondok Pesantren Madrasah Tarbiyah Islamiyah Tanjung Barulak
Authors: Sri Adella Fitri  , Lubis Rumondang , Soltika Citra  , Sri Rahmadani  , Wira Julita  , Yohana Silvin
Published: June 2024

Abstract— Pesantren is a religious institution that needs to have supporting infrastructure within the institution itself in order for pesantren to live a normal life. Precise in meaning is not just common in the field of infrastructure; it also requires consideration of administration and the organization of the kelembangan. The MTI Islamic Boarding School Education Foundation is a non-profit organization for religious education that was founded in the year 1930 and is located beneath the Ministry of Religion. Generally speaking, the NGOs as well as a few students and students as well as government assistance made up the sum of the funding for Islamic boarding schools in question. The purpose of this study is to understand how assurance is carried out regarding the amount of money that is deposited and withdrawn from the MTI pesantren. The study was conducted using a qualitative methodology and involved gathering data over the course of two months, from April to May, and analyzing and analyzing one single study participant, treasurer. From the study's findings, it is possible to infer that
Pengaruh Pengalaman Kerja, Pelatihan Kerja, Dan Persepsi Terhadap Efektivitas Sistem Informasi Keuangan Daerah Pada Badan Keuangan Dan Aset Daerah Kota Madiun
Authors: Afandi Afifu Rohman , Ratnaningtyas Djuwitawati , Wildaniyati Arini
Published: June 2024

This study aims to examine the effect of work experience, job training, and perceptions on the effectiveness of regional financial information systems. This type of research is quantitative. Data collection techniques in this study used questionnaires directly to respondents. Respondents in this study were employees of Badan Keuangan dan Aset Daerah Madiun City. Data analysis was performed using multiple linear regression analysis with the SPSS (Statistical Product and Service Solution) version 25 for windows program. The results of the research hypothesis show that the independent variable work experience is 0.026, the independent variable job training is 0.000, the perception variable is 0.004, and the simultaneous test shows a significance value of 0.000. The results of this study indicate that work experience has a positive effect on the effectiveness of regional financial information systems, job training has a positive effect on the effectiveness of regional financial information systems, and perceptions have a positive effect on the effectiveness of regional financial information systems, as well as work experience, job training, and perceptions simultaneously have an effect on the effectiveness of regional financial information systems. Based on the results of this study, it is hoped that the Badan Keuangan dan Aset Daerah of Madiun City will continue to improve training programs for employees and instill positive perceptions in order to provide good output in terms of the effectiveness of the regional financial information system.
The Effect of Marketing Mix on Purchase Decisions for PAS Leather Products in Magetan Regency in 2022
Authors: Rizkaputra Fergiawan Alfianto , Pratama Alun , Aribowo Wira Ganet , Agnyana Handaru
Published: June 2024

This study aims to analyze the effect of the Marketing Mix on Purchase Decisions for Pas Leather Products in Magetan Regency. This study uses a quantitative approach. The sample of this research is 100 consumers. The method of collecting data is distributing questionnaires given to respondents online. Data analysis using multiple linear analysis. The results of the study explained that (1) the product variable had a positive and significant effect on purchasing decisions, (2) the distribution channel variable had a positive and significant effect on purchasing decisions, (3) the promotion variable had a positive and significant effect on purchasing decisions, (4) the price variable did not positive and significant effect on purchasing decisions. The results of this study can be used as a reference by SMEs for business development, especially in the leather fashion industry.
Perlindungan Hukum Terhadap Produk Usaha Mikro, Kecil, Menengah Di Kota Madiun Melalui Pendaftaran Hak Merek
Authors: Herlambang Kenes , Maharani Andina Elok Puri
Published: June 2024

Usaha Mikro, Kecil dan Menengah (UMKM) has an important and strategic role in national economic development. The importance of the legality of brand rights as an effort to legally protect UMKM, and the creation of a guide on procedures for processing legality documents for brand rights for UMKM. This activity is important because law is an inseparable part of human existence. This is in line with the adage ubi societas ibi ius which means where there are humans, there is law. Remembering that the legality of trademark rights is a legal umbrella for a business entity. However, there are still quite a lot of UMKM industry players in Madiun City who have not registered their trademarks due to limited capital and lack of understanding of the benefits of trademark registration for the UMKM industry. Thus, UMKM that do not register their trademarks do not receive legal protection, because a trademark will receive legal protection if the trademark has been registered. Thus, a policy is needed that regulates the UMKMindustry in Madiun City to obtain legal protection for its trademarks. So this research will examine the legality of brand rights as an effort to legally protect UMKM in Madiun City and how to create a guide on procedures for processing legality documents for brand rights for UMKM in Madiun City. This research uses normative research methods.
Urgensi Pendidikan Pancasila Dalam Melawan Dampak Negatif Ideologi Transnasional
Authors: Eviningrum Sulistya , Wibisono Salsabila Safirana
Published: June 2024

The Urgence of Pancasila Education in Against The Negative Impact of Transnational Ideology. Pancasila education is the part of National Education shich aims to improve the quality of human resources in Indonesia. The quality in question is a person who is full of responsibility which behaviour that reflects the implementation of Pancasila values in the life of nation and state. In practice, especiallu the next generation, it is increasingly expected and required to be able to anticipate changes related to the dynamics of culture, nation, state in international relations by thinking, acting, and behaving based on Pancasila. Reflecting on the advancement of technology today, the urgency of Pancasila education is increasingly visible with the rapid development of transnational ideology itself is widely discussed as a serious national threat. For this reason, the author conducted a study through a literature study of several references and legislation in order to find out more about the urgency of Pancasila education in countering the negative impacts of transnational ideology. Strengthening the values of Pancasila ideology through Pancasila education is a crucial thing that must be suceeded by all part of society.
Perkembangan Konsep Perjanjian Production Sharing Contract Dalam Mekanisme Pengolahan Minyak dan Gas di Indonesia
Authors: Anam Mohammad Choirul , Kusuma Dewi Retno Catur , Pradhana Angga Pramodya
Published: June 2024

This research aims to determine the development of the concept of agreements in production sharing contracts in the oil and gas processing sector based on legal principles in Indonesia. This research uses normative juridical research which uses statutory regulations as a secondary data source. Apart from that, journals, articles, news portals (websites) were also used as supporting sources in this research. Based on the research results, it was found that the development of the concept of production sharing contracts in the oil and gas processing sector in Indonesia was initially introduced by Ibnu Sutowo. Then as time went by it developed up to 4 (four) changes. Even though in its development there have been changes, the concept used in the agreement remains the same, the only difference is in the type of agreement. The concept of a production sharing agreement can be applied in Indonesia because it is simpler, easier to understand by the public, more cost effective; compared to the “Profit Sharing” mechanism. The amount of "Production Sharing" should be close to the gross figure of the amount of "Production Sharing", so that oil and gas investors are not surprised by the new formulation. Because they are used to these numbers, what they live with now is still mutually beneficial. The possibility of applying taxes in the "Production Sharing" mechanism, can be applied at the beginning of activities (subject to Cost Recovery), or imposed on gross production results that come out of oil and gas wells. The formulation of the amount and type of tax needs to be studied jointly between the Director General of Taxes, SKKMigas, and oil and gas investor representative bodies. This is to continue to attract oil and gas investors to carry out oil and gas exploration and production in Indonesia
Implementasi Peraturan Daerah Kabupaten Madiun Tentang Pengelolaan Sampah
Authors: Purnama Taufiq Yuli , Sarjiyati  , Yuni Purwati  , Yusril Abdul Aziz
Published: June 2024

-The Purpose of this study find out the implementation of the Madiun Regency regional regulation on Waste Management, waste management related to the environment is a shared responsibility between the local government and the community, the active role of the community is needed in the implementation of this policy. The method that the author uses in this research is empirical legal research using primary data sources, namely the results of direct interviews with staff of the Madiun Regency Environmental Service and secondary data in this study are laws and regulations. The results of the research and discussion show that the implementation of this regional regulation has been carried out. The Madiun District Environmental Service actively conducts socialisation, training and direction related to waste management, the waste bank program in collaboration with Pegadaian is one of the collaborations that support management and economic improvement. Supporting the implementation of this regional regulation is community participation in assisting the implementation of government policies, especially in the field of waste management, which has an impact on the environment, especially Madiun district.
Peran Dan Hambatan Satuan Polisi Pamong Praja Kota Madiun Dalam Mengendalikan Peredaran Minuman Beralkohol
Authors: Yitawati Krista , Chairani Meirza Aulia , Sukarjono Bambang , Aprillino Abednego
Published: June 2024

This study aims to determine the role, obstacles and efforts of the Madiun City Pamong Praja Police Unit in carrying out the enforcement of local regulations related to the circulation of alcoholic beverages. This research uses the Empirical Legal Research Method, with primary data sources from interviews and observations at the Civil Service Police Unit and one of the cafes that sells alcoholic beverages in Madiun, as well as secondary data sources, namely Regional Regulation No. 8 of 2017 concerning Control of Alcoholic Beverage Distribution and Retribution for Alcoholic Beverage Sales Location Permits. SatpolPP Madiun City plays a role in carrying out the enforcement of local regulations related to the distribution of alcoholic beverages in Madiun City by carrying out routine operations together with the Madiun City Police with the Criminal Investigation Sub-field which is approximately ten to fifteen operations every month based on the budget that has been approved by the DPRD. The obstacles faced are sourced from within the institution's own organisation or Internal and sourced from outside the organisation or External. Satpol PP Madiun City makes several efforts in various ways, including Satpol PP is required to work with what infrastructure has been provided, Satpol PP tries to carry out its work duties according to the applicable SOP, on call when suddenly required to carry out its work duties.
THE EDUCATIONAL VALUES OF MULTICULTURAL ISLAM IN TURATS SIROJUTTHOLIBIN KIAI IHSAN JAMPES KEDIRI
Authors: Al Anshori Thoriq , Budiya Bahroin
Published: June 2024

Multicultural differences are inevitable, especially in the academic life of primary and higher education. To accept this difference, one must be plural or tolerant of diversity. In the context of soul education, the great name Kiai Ihsan Jampes is no stranger to the general public. The purpose of this research is to find the values of multicultural Islamic education in the world's scholars of his origins to the extent to which, along with its analysis, as well as carefully studying the methods, approaches, and dimensions of multiculturalism existing in his turats. Methods used This research belongs to the category of library research and uses a qualitative descriptive approach. The values of multicultural Islamic education reflected by his Turats, at least, are the need to treat others with care, tolerance, and compassion, which is not at all compelling in calling for good. The methods reflected in the above turats are methods of contribution, decision-making, and social action. The approach is aesthetic. The dimensions contained are the dimensions of prejudice reduction. This study contributed to the development of religious moderation and revealed that previous scholars have suggested the importance of a tolerant, moderate attitude in order to form an agamistic and nationalist soul that benefits the long-term revival of human resources.
ANALYSIS OF STUDENT NUMERACY LITERACY IN SOLVING PISA QUESTIONS
Authors: Sopamena Patma , Rahmawati Intan , Lessy Djaffar , Ma'aruf Salmiati
Published: June 2024

This study aims to describe the process of student numeracy literacy in solving PISA questions. This study used a qualitative descriptive approach. The subjects in the study were two people from 34 students of 9th grade B MTs N Ambon as participants, with data acquisition including observations, interviews, and numeracy literacy ability tests from PISA questions. Data analysis techniques use data classification, data reduction, data presentation, data interpretation, and conclusions.   The results of this study show that: 1) both students have the ability of the main competencies in numeracy literacy, namely capable; of communicating problems, making mathematical models, making representations, arguing and giving appropriate reasons in accountability for their work, making good and correct solving strategies, use formal language, symbol language and technical language and use mathematical tools to facilitate their work. 2) There are differences in the solution of the two students, namely in solving problem number one, there are students who make mathematical modeling with the basic formula of comparison and there are students who make mathematical modeling with the opposite of the basic formula of comparison, namely multiplication.
ASSESSING THE POTENTIAL OF OPEN-ENDED PROBLEM TO IMPROVE STUDENTS' CREATIVE THINKING SKILLS IN MATHEMATICS LEARNING
Authors: Prasetyo Agung , Tuanaya Rugaya , Sangkala Nani Sukartini
Published: June 2024

Abstrak Penelitian ini dilakukan untuk mengukur potensi penggunaan masalah terbuka dalam meningkatkan kemampuan berpikir kreatif siswa dalam konteks pembelajaran matematika. Metode penelitian yang digunakan adalah sistematik literature review dengan sumber data dari Google Scholar, Eric, DOAJ, Scopus, dan Science Direct menggunakan kata kunci "open-ended problem" dan "creative thinking". Hasil analisis data menunjukkan bahwa pemberian masalah terbuka berpengaruh positif pada kemampuan berpikir kreatif siswa. Literatur menyatakan hampir semua artikel mengakui bahwa masalah terbuka meningkatkan kemampuan berpikir kreatif siswa dalam pembelajaran matematika, bahkan pembelajaran berbasis masalah terbuka dapat lebih efektif. Kesimpulannya, soal terbuka berpotensi meningkatkan kemampuan berpikir kreatif siswa dalam matematika dan dapat dilatih melalui pembelajaran berbasis masalah (PBL). Penelitian lanjutan dianjurkan untuk mendalami pengaruhnya secara lebih rinci.AbstractThis research aimed to assess the potential use of open-ended problems in enhancing students' creative thinking abilities within the context of mathematics education. The research methodology employed was a systematic literature review, drawing data from sources such as Google Scholar, Eric, DOAJ, Scopus, and Science Direct, using the keywords "open-ended problem" and "creative thinking." The data analysis results revealed that the provision of open-ended problems had a positive impact on students' creative thinking skills. The literature consistently indicated that nearly all articles acknowledged that open-ended problems could enhance students' creative thinking abilities in mathematics learning, with some suggesting that open problem-based learning could be even more effective. In conclusion, open-ended problems have the potential to improve students' creative thinking skills in mathematics and can be cultivated through problem-based learning (PBL). Further research is recommended to delve deeper into their influence.
PROCEDURAL KNOWLEDGE-BASED STRATEGIES IN IMPROVING STUDENT LEARNING OUTCOMES IN ORDINARY DIFFERENTIAL EQUATIONS COURSES
Authors: Lapele Dina Amalya , Jait Adam Bin Haji
Published: June 2024

This research aims to identify the differences in average learning outcomes between students taught using procedural knowledge-based strategies and students who are taught without using procedural knowledge-based strategies. This research is quasi experimental research with a posttest-only design with nonequivalent groups. The population in this study were students from the Mathematics Education Department at IAIN Ambon. The samples used were students of the IAIN Ambon Mathematics Education Department Semester 3 (class A and class B). The number of class A students is 14 people and the number of class B students is also 14 people. The data collection technique in this research was tests. The instrument used is in the form of test questions. The test questions consist of three questions describing various types of ordinary differential equations. The data analysis technique used were the Mann Whitney U Test and descriptive test. The research results showed that there were differences in average learning outcomes between students who were taught using procedural knowledge-based strategies (experimental class) and students who were taught without using procedural knowledge-based strategies (control class). The average learning outcomes of experimental class students is higher than the average learning outcomes of control class students.
DEEP LEARNING FOR AUTOMATIC CLASSIFICATION OF AVOCADO FRUIT MATURITY
Authors: Widiati Wina , Haryanto Toto
Published: June 2024

Avocado (Persea Americana), a fleshy fruit with a single seed, has increased in popularity globally, especially in tropical and Mediterranean climates, thanks to its commercial and nutritional value. Rich in bioactive compounds, avocados contribute to the prevention and treatment of various diseases, including cardiovascular problems and cancer. Avocado production in Indonesia, for example, is showing a significant increase, reflecting the growing demand. Avocado ripeness affects shelf life and quality, making the determination of ripeness level a critical aspect of postharvest management. Skin color and pulp firmness change during storage, affecting quality and nutritional value. Proper classification of ripeness is important to reduce post-harvest losses, improve quality and optimize export costs. Recent research shows the use of technologies such as machine learning and YOLO (You Only Look Once) version 9 in real-time detection of avocado ripeness, offering innovative solutions to reduce post-harvest losses and improve distribution efficiency. This approach not only benefits farmers and consumers but also ensures consumer satisfaction and reduces economic losses. This study highlights the importance of real-time detection in monitoring avocado ripeness, where the training process was conducted for 89,280 iterations resulting in a new model for avocado ripeness detection. The final model has a mean Average Precision (mAP) validation value of 84.3%, mAP 84.3% signifies the optimal level of accuracy in object recognition in avocado fruit maturity images using the YOLO model that has undergone an intensive training process.
Effect of Angle of Incident on Taper Angle in Femtosecond Laser Machining for Fabrication of Cross Section Analysis Specimen
Authors: Kim Jae Gyeong , Kim Chung-Soo , Park Suk-Hee , Ha Jeonghong
Published: June 2024

Focused ion beam (FIB) technology is one of the most widely used methods for fabricating crosssectional analysis specimens because of its high precision and characteristics that minimize the occurrence of defects. Demand for large cross-sectional area analysis is increasing to improve product reliability in various industries, but is limited by the low milling speed of FIB. Other potential techniques such as Ar ion milling and plasma FIB have been adopted, but low milling speed for large areas still remains a problem. A promising solution to this issue involves laser machining prior to FIB milling. In laser machining a laser beam is irradiated to remove materials from the target. This technique can provide several orders of magnitude higher material removal rate than FIB, however, tapering of the machined surface and laser induced damage can occur. Removing these defects leads to increased FIB milling time. In this study, the laser parameters including angle of incident (AOI) were optimized to achieve a vertical like sidewall and minimize laser induced defects. Before applying AOI, laser machining parameters were optimized to reduce the angle of the machined sidewall. The taper angle of 2.5° was fabricated using the optimized parameters and application of AOI. Raman spectroscopy, SEM, and EDS analysis were used to measure not only the geometry of the laser machined sidewalls, but laser induced residual stress and defects. These results were then used to calculate the volume of FIB milling required to remove the laser induced damages and achieve vertical sidewalls. The application of AOI can significantly reduce the processing time in the FIB milling compared to the processing time when AOI is not applied.
Where were the Orcades? Early medieval engagement with the islands at the edge of the Earth in texts and maps
Authors: Plumb Oisín
Published: June 2024

This paper considers the portrayal of the Orcades and the North Atlantic in a range of seventh- to eleventh-century insular sources. It is argued that the content of early medieval insular written sources suggests that Orcades should not necessarily be translated as ‘Orkney’ in every case, and that it is plausible that on many occasions, a territory encompassing a wider range of the island groups of Scotland is intended. Consideration of the depiction of the Orcades on the mappa mundi within British Library Cotton MS Tiberius B.v/1 bolsters this conclusion. New multi-spectral images of the map suggest that, despite apparent adjustments to the extent of the Orcades during the process of the map’s production, a very large archipelago covering an extensive territory off northern Britain was intended from the time of the map’s initial creation.
Note for the Prime Gaps
Authors: Vega Frank
Published: June 2024

A prime gap is the difference between two successive prime numbers. The nth prime gap, denoted $g_{n}$ is the difference between the (n + 1)st and the nth prime numbers, i.e. $g_{n}=p_{n+1}-p_{n}$. There isn't a verified solution to Andrica's conjecture yet. The conjecture itself deals with the difference between the square roots of consecutive prime numbers. While mathematicians have showed it true for a vast number of primes, a general solution remains elusive. We consider the inequality $\frac{\theta(p_{n+1})}{\theta(p_{n})} \geq \sqrt {\frac{p_{n+1}}{p_{n}}}$ for two successive prime numbers $p_{n}$ and $p_{n+1}$, where $\theta(x)$ is the Chebyshev function. In this note, under the assumption that the inequality $\frac{\theta(p_{n+1})}{\theta(p_{n})} \geq \sqrt {\frac{p_{n+1}}{p_{n}}}$ holds for all $n \geq 1.3002 \cdot 10^{16}$, we prove that the Andrica's conjecture is true. Since $\frac{\theta(p_{n+1})}{\theta(p_{n})} \geq \sqrt {\frac{p_{n+1}}{p_{n}}}$ holds indeed for large enough prime number $p_{n}$, then we show that the statement of the Andrica's conjecture can always be true for all primes greater than some threshold.
FAKTOR-FAKTOR YANG MEMPENGARUHI INCOME SMOOTHING
Authors: Efriyenti Dian , Azmiana Risca , L. Tobing Vargo Christian
Published: June 2024

Operating profit margin and financial leverage have increased and fluctuated but income smoothing has not completely increased, and vice versa. The practice of profit equalization phenomenon emerged to reduce fluctuations in reported profits. Another case that occurred at the Kimia Farma company, carried out profit equalization actions, allegedly marking up net profit in the 2019 financial report, in the financial report it was able to obtain a profit of IDR 132 billion. However, the reported profit is different from the actual profit of IDR 132 billion. However, the reported profit was IDR 99 billion. In another case at Indofarma Tbk, goods were found to be of higher value than they should be. As well as having an impact on profits. The aim of this research is to analyze operating profit margin and financial leverage which have an impact on income smoothing. The population in this study is the number of food and beverage companies registered on the IDX. The sampling technique used criteria so that there were 14 samples in this study. Data analysis using regression analysis. The results obtained were up to 8 companies that experienced fluctuating data from operating profit margin and financial leverage as well as income smoothing. The research results state that financial leverage has no significant effect on income smoothing, while operating profit margin has an effect on income smoothing.
Literasi Keuangan, Pembelajaran Manajemen Keuangan di Perguruan Tinggi terhadap Gaya Hidup dan Semangat Berwirausaha
Authors: Edy wibowo Agung , Abnur Asman , Yulianti Merline , Maldin Siska Amelia
Published: June 2024

Penelitian ini mengkaji pentingnya literasi keuangan dan pembelajaran manajemen keuangan di perguruan tinggi serta dampaknya terhadap gaya hidup dan semangat berwirausaha mahasiswa. Literasi keuangan, yang mencakup pemahaman tentang konsep keuangan dasar dan keterampilan pengelolaan uang, merupakan kompetensi penting di era modern. Pembelajaran manajemen keuangan di kampus memainkan peran krusial dalam membekali mahasiswa dengan pengetahuan dan keterampilan yang diperlukan untuk membuat keputusan keuangan yang bijaksana. Melalui pendekatan studi kasus dan survei terhadap mahasiswa yang telah memperoleh materi ajar mata kuliah manajemen keuangan, penelitian ini menemukan bahwa program pendidikan keuangan yang komprehensif dapat meningkatkan kemampuan mahasiswa dalam mengelola keuangan pribadi, menabung, dan berinvestasi. Penelitian dilakukan dengan responden sejumlah 112 mahasiswa di salah satu perguruan tinggi di Kepulauan Riau, menggunakan purposive sampling dan diuji dengan menggunakan alat analisis SMART-PLS. Hasil menunjukkan bahwa literasi keuangan yang baik juga berkorelasi positif dengan meningkatnya minat dan semangat berwirausaha. Mahasiswa yang menguasai manajemen keuangan lebih percaya diri dalam merencanakan dan menjalankan usaha mereka sendiri, yang pada gilirannya dapat mendorong munculnya jiwa wirausaha di kalangan generasi muda. Mahasiswa yang mengikuti mata kuliah manajemen keuangan cenderung memiliki pemahaman yang lebih baik tentang pengelolaan keuangan pribadi dan menunjukkan perilaku keuangan yang lebih bertanggung jawab dalam perilaku dan gaya hidupnya. Selain itu, dalam riset ini didapati simpulan bahwa  literasi keuangan berpengaruh  terhadap  gaya  hidup, pembelajaran manajemen keuangan di perguruan tinggi  berpengaruh terhadap  terhadap  gaya hidup, variabel gaya hidup berpengaruh terhadap terhadap semangat berwirausaha, serta  gaya  hidup memediasi literasi keuangan terhadap semangat berwirausaha, dan gaya hidup memediasi pembelajaran manajemen keuangan di perguruan tinggi  terhadap semangat berwirausaha.
Evaluation of non-penetrative captive bolt stunning as a method of slaughter for white sturgeon (Acipenser transmontanus)
Authors: Gross Jackson A. , Bowman Jennifer R. , Imai Denise M. , Wong Talia S. , Duarte Toni L. , Boles Sara E. , McGorrin Robert J. , Yang Xiang
Published: June 2024

Introduction

Percussive stunning is a widely used and ethically supported method of stunning fish per welfare standards as part of a one- or two-step slaughter process. In this study, the use of a non-penetrative captive bolt (NPCB) gun was evaluated as an effective one-step method of improving welfare for juvenile and adult farmed white sturgeon (Acipenser transmontanus) at slaughter.

Methods

A Jarvis HPS-1 NPCB was operated at pressures of 120, 135, and 145 PSI (827.37, 930.79, and 999.74 kPa, respectively) for juvenile sturgeon (n = 3 sturgeon per operating pressure) and 175, 200, and 225 PSI (1206.58, 1378.95, and 1551.32 kPa, respectively) for adult sturgeon (n = 3 sturgeon per operating pressure). Following a single strike, fish were assessed for jaw relaxation and a somatic response before being exsanguinated and transferred to an ice slurry. An hour after slaughter, fish heads were collected, and a section of cartilage containing the brain was removed and fixed in formalin for histological analysis of brain death. To evaluate fish recovery, juveniles (n = 100) and adult female sturgeon (n = 65) were monitored for two hoursafter a single exposure to 145 and 225 PSI, respectively.

Results

Histology results showed there was an effect between operating pressure and intracranial hemorrhage in juvenile sturgeon (p = 0.024). There was a greater meningeal-to-cerebral hemorrhage at 135 PSI compared to the 120 PSI group (p = 0.020) and a trend towards increased tissue damage from 120 PSI to 145 PSI (p = 0.056). Adults showed no significant difference in meningeal hemorrhage at any operating pressure. When investigating recovery rates, NPCB successfully stunned 100% of juvenile sturgeon at 145 PSI, and 225 PSI stunned 90% of adult sturgeon without recovery.

Discussion

These results demonstrate that the use of an NPCB gun is an improvement in animal welfare compared to repeated strikes, but a single application did not produce histological brain death; further research should be conducted to determine optimal pressures that result in immediate brain death.
Exploring the role of brain-derived extracellular vesicles in viral infections: from pathological insights to biomarker potential
Authors: Oberholster Larise , Du Pasquier Renaud , Mathias Amandine
Published: June 2024

Extracellular vesicles (EVs) are membrane-bound vesicles secreted by all cell types that play a central role in cell-to-cell communication. Since these vesicles serve as vehicles of cellular content (nucleic acids, proteins and lipids) with the potential to cross biological barriers, they represent a novel attractive window into an otherwise inaccessible organ, such as the brain. The composition of EVs is cell-type specific and mirrors the physiological condition of the cell-of-origin. Consequently, during viral infection, EVs undergo significant changes in their content and morphology, thereby reflecting alterations in the cellular state. Here, we briefly summarize the potential of brain-derived EVs as a lens into viral infection in the central nervous system, thereby: 1) uncovering underlying pathophysiological processes at play and 2) serving as liquid biopsies of the brain, representing a non-invasive source of biomarkers for monitoring disease activity. Although translating the potential of EVs from research to diagnosis poses complexities, characterizing brain-derived EVs in the context of viral infections holds promise to enhance diagnostic and therapeutic strategies, offering new avenues for managing infectious neurological diseases.
The continuing value of mesalazine as first-line therapy for patients with moderately active ulcerative colitis
Authors: Paridaens Kristine , Freddi Matthew J. , Travis Simon P. L.
Published: June 2024

Mesalazine is an established and recommended first-line treatment for mild-to-moderate ulcerative colitis (UC). For patients with moderately active UC, the choice to use mesalazine or to initiate treatment with an oral corticosteroid or anti-tumor necrosis factor (TNF) agent is not clearly informed from current guidelines. The use of mesalazine is supported by robust clinical evidence supporting its efficacy at inducing remission in patients with moderately active disease. A key advantage of mesalazine is its tolerability profile being similar to that of placebo, which contrasts with that of the corticosteroids and advanced therapies, where there is the potential for significant toxicities. Mesalazine also has cost advantages over anti-TNFs and other advanced therapies. Evidence supports the consideration of all patients with moderately active UC for first-line mesalazine therapy at an optimized dose of ≥4g/d (± 1g/d rectal). Patients responding to treatment within 2 weeks should continue at ≥4g/d for at least 6 months before a dose reduction is considered, since this then alters the pattern of disease.