bluuebunny/crossref_metadata_2025 huggingface dataset:
Production of food phosphates: selective crystallization of sodium and potassium salts from solutions of refined ammonium orthophosphate
Authors:   Ukrainian State University of Science and Technologies, Nikolenko M.V. , Vasylenko K.V. , Vashkevych O.Yu. , Ryshchenko I.M.
Published: September 2024

The work is devoted to the determination of technologically appropriate conditions for preparation of chemically pure salts of sodium and potassium orthophosphates based on solutions formed after the purification of orthophosphate acid from impurities of toxic elements by the method of complete ammonization with parallel co-precipitation with dicalcium phosphate. Based on the calculated solubility polytherms of mixtures of orthophosphates and chlorides of sodium, potassium, and ammonium at temperatures of 0–1000С, the conditions of their selective crystallization were determined. The results of calculations are compared with experimental data on crystallization of salts under laboratory conditions. The phase compositions of the sediments were confirmed by the XRD method. It was shown that the following chemically pure salts can be prepared from solutions of mixtures of orthophosphates and ammonium chlorides using the methods of isothermal-isohydric crystallization and conversion: Na2HPO4 (with a yield of up to 96%), NaH2PO4 (with a yield of up to 34%) and KH2PO4 (with a yield of up to 41%). The yield of crystalline KH2PO4 can be increased to 64% by converting NaH2PO4 with KCl. Measurements of the content of toxic compounds Cd(II), As(III), Cu(II), Pb(II) and fluorine in the synthesized salts showed that they were at levels lower than the current requirements for maximum permissible concentrations, therefore the synthesized salts can be used as food additives.
Development of rare earth metal-modified heat-resistant coatings for gas turbine blades
Authors:   Ukrainian State University of Science and Technologies, Yefanov V.S. , Gnatenko M.O. , Laptieva H.M. , Basov Y.F. , Sukhyy K.M. , Kovalyov S.V. , Popov S.M.
Published: September 2024

This paper presents an investigation into the influence of Y-La and Y-Hf-La modifiers on the structure and properties of Ni-Cr-Al consumable cathodes used for heat-resistant coatings on turbine blades via the arc-ion plating method. The study shows that the introduction of these modifiers positively affects the structure formation process of the consumable cathodes. The modifiers contribute to a higher degree of microstructural homogeneity in the cathodes, achieved through the formation of nanosized stabilizing phases between the alloying elements and the rare earth metal groups. This study experimentally confirms that Ni-Cr-Al coatings produced with the Y-La and Y-Hf-La modified cathodes outperform traditional Y-only modified coatings in oxidation tests. Structural analysis of the coatings reveals that samples with Y-Hf-La exhibit greater homogeneity and fewer defects, which is particularly important when depositing coatings with large thicknesses (over 40 m). It was found that the introduction of the Y-Hf-La complex enables the application of coatings up to 90 m thick by forming a less defective structure. Additionally, it has been established that Y-Hf-La modification enhances the adhesion of the coating to the substrate and allows for maximum uniformity in the distribution of alloying elements throughout the entire thickness of the applied coating.
Evaluation and Ranking of Energy Alternatives for Implementation in Different Geographic Scenarios using Decision Methods: Case Study of Colombia
Authors: Rocha Christian Manuel Moreno , Buelvas Daina Arenas , Escorcia Sandra De la Hoz
Published: September 2024

In this research, several crucial aspects have been explored in the evaluation and ranking of energy alternatives in Colombia using advanced decision methods such as TOPSIS and Diffuse TOPSIS. The study analyzed how these techniques allow to effectively compare different renewable energy sources in various regions of the country, highlighting the importance of considering multiple approaches due to the unique geographical and energy characteristics of each region. Specifically, five regions were evaluated: Caribbean 1 and 2, Pacific 1 and 2, Andean, Amazonian and Orinoquia, observing significant differences in the evaluation of technologies between the models. In the evaluation of energy sources for each region, the potential of photovoltaic solar energy in the Caribbean and Orinoquia regions was emphasized due to the high solar radiation, wind energy in the Caribbean and Pacific regions due to its strong winds, and biomass in the Amazon and Andean regions thanks to the abundance of organic resources. These technologies not only contribute to the reduction of carbon emissions and the diversification of the energy matrix, but also promote a just energy transition by generating employment and improving the quality of life in local communities. The TOPSIS method and its diffuse variant make it possible to weigh criteria with different degrees of importance and manage uncertainty in decision-making, resulting in more precise evaluations adapted to specific contexts. This type of research is vital for decision-making in the Colombian electricity sector, as it provides a solid and replicable methodology for evaluating energy alternatives in an integral way. The results not only contribute to environmental sustainability, but also boost the socio-economic development of the regions, fostering an equitable and fair energy transition.
Trading Momentum in the U.S. Crude Oil Futures Market
Authors: Gurrib Ikhlaas , Starkova Olga , Hamdan Dalia
Published: September 2024

This paper investigates if the Rate of Change (ROC), as a popular measure of momentum, can serve as a reliable technical analysis indicator to improve stock price prediction for U.S. West Texas Intermediate (WTI) crude oil futures market.  The methodology centers on the application of the ROC and/or Moving Average (MA) price crossover/cross under strategies as a trading system.  End of month futures prices of West Texas Intermediate (WTI) crude oil prices are collected for the period 28th May 2004 – 30th April 2024.  The performance of the trading system is measured using both the Sharpe and Sortino ratios, thereby adjusting for total and downside risks.  The model is also benchmarked against the naïve buy-and-hold strategy.  Overall findings suggest a ROC based on 14-month periods outperform other momentum-based indicators, including when combined with price-crossover moving average strategies, and the naïve buy-and-hold strategy.  After adjusting for the negative returns, the downside risk or semi-deviation amounted to 8.5%, and a Sortino value of 4.58.  The Sortino value is however biased due to the 295% return witnessed in 2009.  Findings have some vital policy implications for regulatory bodies and traders in the WTI crude oil energy futures market.
Optimizing Price Markup: The Impact of Power Purchase Agreements and Energy Production Uncertainty on the Economic Performance of Onshore and Offshore Wind Farms
Authors: Perrelli Antonio C. C. , Sodré Eduardo A. , Silva André V. R. N. , Studzinski Caarem D. S. , Silva Vinícius F. , Filho Dalton F. G. , Neto Armando T. , Santos Alex A. B.
Published: September 2024

Wind energy is rapidly expanding its capacity as part of the global energy transition. To ensure economic viability, wind energy projects increasingly rely on risk mitigation strategies. While Power Purchase Agreements (PPAs) manage spot market price variability, wind farms still face energy production uncertainty, directly impacting the quantity of energy generated. This study presents a comprehensive analysis of the price markup for onshore and offshore wind farms, considering energy production uncertainty under PPA and non-PPA scenarios. The study examines key metrics such as equilibrium prices, price markups, Internal Rate of Return (IRR), Net Present Value (NPV), and their correlation to energy production risk. Results demonstrate that PPAs significantly alter the relationship between price markup and variability. Offshore wind farms can potentially benefit more from PPAs compared to onshore, especially at lower levels of wind energy variability. However, as variability increases, the risk mitigation provided by PPAs diminishes, and both onshore and offshore wind farms may require higher price markups for financial viability. These findings highlight the necessity of carefully designed PPA structures and pricing strategies to ensure long-term competitiveness and sustainability of wind energy projects.
Identification of Factors Affecting Net Zero Emission Level in Indonesia
Authors: Nugraha Adhitya , Siregar Hermanto , Fahmi Idqan , Asikin Zenal , Indrawan Dikky , Harianto Harianto , Aprilian Salis
Published: September 2024

Amid the rising risks of fossil fuel prices and uncertainties about the global energy supply, countries worldwide have the opportunity to strengthen the development of clean energy investments. This study analyzes the impact of economic growth and other variables, such as fossil fuel consumption, renewable electricity generation, and low-carbon energy use, on carbon dioxide emissions in Indonesia over the past 58 years, from 1965 to 2022. The analysis compares the findings with the Environmental Kuznets Curve (EKC) hypothesis using quadratic equations and cubic equations through the stepwise application of ordinary least square (OLS) methods. Projections suggest that this relationship could follow the Environmental Kuznets Curve (EKC) hypothesis with an inverted U-shape as GDP per capita increases, CO2 emissions per capita rise until reaching a turning point at $12,440 GDP per capita, after which CO2 emissions per capita potentially decrease with further GDP growth. The EKC is a theoretical framework that suggests that environmental degradation initially increases with economic growth, but it starts to decrease beyond a certain point. The analysis also shows that projections could follow an N-curve when variables such as fossil fuel consumption and low-carbon energy influence the NZE level. This indicates that Indonesia still needs to consider energy security in the short and medium term while advancing sustainable energy initiatives. There is also a need for support in research and development of environmentally friendly technologies to reduce emissions alongside national economic growth.
Strategic Management of Clean Energy Investments: Financial Performance Insights by Using BWM-based VIKOR and TOPSIS Methods
Authors: Dayi Faruk , Cilesiz Ali , Yucel Mustafa
Published: September 2024

Market share of renewable energy companies increases with the increase in green-energy production. Companies increase their investments depending on the increase in energy production and can provide capital by offering the company to the public. Companies are traded in the exchange market in order to fund their increasing investments and access a large investor base. The increase in the market values of clean energy companies in recent years draws attention of investors. The study aims to identify key financial indicators that influence company growth and investment value by analyzing companies listed in the S&P North America and Europe Clean Energy Index. Therefore, the study evaluates the financial performance of clean energy companies using Best-Worst Method (BWM)-based VIKOR and TOPSIS methods to provide investors with a comprehensive assessment of investment opportunities in the clean energy sector. Also, the comparison of the two methods will contribute to the literature. The sample of this study consists of 10 big companies in S&P North America and Europe Clean Energy Index. Financial tables and exchange market data of the companies for the years 2019, 2020, and 2021 were used in this study. Remarkably, the analysis findings of the two methods differ from each other. The findings reveal significant insights into the financial health and growth potential of clean energy companies, offering valuable guidance for future.
Pioneering Sustainability: The Development and Policy Framework of Ammonia Fuel Technology in China
Authors: Xia Tian , Ma Zhihao , Li Miao
Published: September 2024

This article investigates the complex dynamics of ammonia as an alternative fuel within the ambit of China's strategic initiatives aimed at attaining carbon neutrality. Given ammonia's distinctive characteristics as a fuel, this analysis delves into the nascent development status and the multifaceted challenges confronting this sector within China. Through a comprehensive examination of the plethora of new energy policies promulgated by the Chinese government, this article underscores the initial phase of accelerated growth in the ammonia fuel domain. The imposition of carbon emission restrictions, coupled with the momentum generated by technological innovations, positions green ammonia as an efficacious solution for hydrogen storage and utilization, thereby fostering a symbiotic relationship with the hydrogen energy industry chain. The proactive policy framework adopted by China significantly enhances the pivotal role of ammonia fuel technology, making it one of the principal technological pathways for China to realize its carbon neutrality ambitions in the future.
The Impact of R&D Expenditures on Regional Energy Intensity in Turkey
Authors: Algül Yahya , Erenel Deniz
Published: September 2024

Energy efficiency measures are effective solutions for addressing environmental and economic issues, including global warming, energy supply security, and trade deficits from imported energy sources. Turkey through an ambitious policy scheme in the last decades, have reduced energy intensity level significantly, though, still higher than developed countries. In this regard, this study investigates the relationship between R&D expenditures and energy intensity in Turkey through NUTS-I regional data ranging from 2010 to 2021. According to both FMOLS and DOLS technique findings increasing R&D expenditures may significantly decreases energy intensity. Furthermore, economic growth appears to correlate with reduced energy intensity. Additionally, FMOLS findings suggest that industrialization may increases energy intensity, while DOLS results indicate that population growth can also significantly increase energy intensity. Therefore, a customized research and development (R&D) incentivization support system could offer various benefits to Turkey and other developing nations facing similar challenges.
Akad Jual Beli Transaksi Online Pada Aplikasi Shopee Food Dalam Perspektif Fikih Muamalah
Authors: Ulfa Maria
Published: September 2024

At present we have entered the 4.0 era or what is often referred to as the digital era, where every effort is made to switch to digitization with the aim of facilitating transactions, one of the paths to digitization is the buying and selling process (muamalah field). This is a challenge for Muslims to research all kinds of transactions that are currently developing, one of which is the Shopee Food service available on the Shopee application. There is a need for legal action to examine whether the transaction is in accordance with muamalah law. The method used in this research is legal research with qualitative analysis, with an approach using normative data. There are three types of contracts that occur in Shopee Food services in the Shopee application, namely leasing contracts, buying and selling contracts, and wakalah contracts. In general, transactions in the Shopee Food service in the Shopee application have so far been in accordance with what is stipulated in the Shari'a.
Tinjauan Hukum Penerapan Tanda Tangan Digital dalam Transaksi Bisnis
Authors: Fandi Arwan Muhammad Eka , Tjempaka Tjempaka
Published: September 2024

Dalam penelitian ini dibahas bagaimana penandatanganan kontrak secara elektronik semakin populer di era digital saat ini. Legalitas dan keberlakuan perjanjian yang ditandatangani secara online masih diperdebatkan. untuk menyelidiki apakah (1) Kitab Undang-Undang Hukum Perdata (KUHPerdata) dan UU ITE (Undang-Undang Informasi dan Transaksi Elektronik) dapat digunakan untuk mendukung pelaksanaan penandatanganan perjanjian digital, (2) bagaimana konsumen memandang perlindungan dan kepastian hukum dalam perjanjian elektronik, (3) dan apakah notaris dapat memasukkan tanda tangan digital ke dalam akta autentik. Dalam studi masalah semacam ini, metode yuridis normatif digunakan untuk menganalisis data sekunder seperti undang-undang, peraturan, dan dokumen hukum lainnya serta temuan penelitian, kajian, dan referensi lain yang relevan dengan masalah. Tanda tangan digital perjanjian diizinkan oleh kedua undang-undang. UU ITE mengatur tanda tangan elektronik yang sama-sama dapat dipercaya seperti tanda tangan konvensional. KUH Perdata juga memungkinkan para pihak untuk memilih struktur perjanjian, termasuk yang elektronik. menunjukkan upaya sungguh-sungguh pemerintah untuk melindungi konsumen dalam transaksi elektronik, selain fakta bahwa tanda tangan digital memberikan kekuatan hukum untuk kontrak elektronik. Hal ini mengindikasikan upaya tulus pemerintah untuk melindungi konsumen dalam transaksi elektronik.
Menelaah Persoalan Independensi Penegak Hukum terhadap Budaya Hukum
Authors: Firdaus Suyadi Dede , Suyadi Asip
Published: September 2024

Independensi Penegak Hukum Sebuah Harapan Besar Bagi Masyarakat. Berdasarkan persyaratan suatu negara menurut Prof. Jimly Ashiddiqie bahwa dalam suatu negara hukum salah satunya bercirikan peradilan yang bebas dan tidak memihak. Yang berarti dalam hal ini aparat penegak hukum sebagai komponen dari sistem peradilan harus independen, bebas pengaruh dari pihak manapun, dan adil yang berarti tidak ada nya sistem â€œTajam kebawah, tumpul keatasâ€. Penegakan hukum yang hanya bertitik tolak dari substansi norma hukum formil yang ada dalam undang-undang, hanya akan cenderung mencederai rasa keadilan masyarakat. sebaiknya, penegakan juga harus bertitik tolak pada hukum yang hidup. Para penegak hukum harus memperhatikan budaya hukum (legal culture) untuk memahami sikap, kepercayaan, nilai, dan harapan serta pemikiran masyarakat terhadap hukum dalam sistem hukum yang berlaku.
Peran Notaris terhadap Putusan Perdamaian Perkara Penundaan Kewajiban Pembayaran Utang yang Melibatkan Kreditor Terdaftar
Authors: Dharma Mohamad Eka , Bakry Mohammad Ryan , Muda Iskandar
Published: September 2024

Penelitian ini bertujuan untuk memperoleh informasi dan menganalisa hukum mengenai Peran Notaris Terhadap Putusan Perdamaian Perkara Penundaan Kewajiban Pembayaran Utang Yang Melibatkan Kreditor Terdaftar. Dengan menggunakan Metode pendekatan dalam penelitian ini adalah pendekatan yuridis normatif. rumusan masalah dalam penelitian ini adalah Bagaimana Perkara Penundaan Kewajiban Pembayaran Utang Yang Melibatkan Notaris di Indonesia? dan Bagaimana Peran Notaris Dalam Putusan Perdamaian Yang Memberikan Kemanfaatan Hukum? Bahwa Penundaan Kewajiban Pembayaran Utang Yang Melibatkan Notaris di Indonesia adalah karena Notaris sebagai pejabat yang berwenang untuk membuat akta otentik mengenai semua perbuatan, perjanjian dan penetapan yang diharuskan oleh peraturan perundang-undangan atau oleh pihak yang berkepentingan untuk dinyatakan di dalam suatu akta otentik. Untuk dapat dilakukannya perjanjian perdamaian tersebut maka perdamaian harus disetujui oleh para kreditor. Peran Notaris Dalam Putusan Perdamaian Yang Membawa Kemanfaatan Hukum Bagi Kreditur Berdasarkan Pasal 69 Ayat 1 Undang-Undang Nomor 37 Tahun 2004 menyebutkan Tugas kurator adalah melakukan pengurusan harta atau pemberesan harta pailit. Pada Ayat 2 menjelaskan bahwa walaupun dalam keadaan diluar kepailitan persetujuan atau persetujuan. Oleh karena itu Notaris atas permasalahan tersebut akan mengarahkan kepada pembuatan suatu perjanjian yang bersifat mengikat.
Penerapan Prinsip Mengenali Pengguna Jasa bagi Notaris dalam Pembuatan Akta dari Transaksi yang Didasarkan Kepada Skema Ponzi
Authors: Wulandari Sari , Yusuf Chandra , Hardian Frengki
Published: September 2024

Penelitian ini bertujuan untuk memperoleh informasi dan menganalisa hukum mengenai Penerapan Prinsip Mengenali Pengguna Jasa Bagi Notaris Dalam Pembuatan Akta Dari Transaksi Yang Didasarkan Kepada Skema Ponzi. Dengan menggunakan Metode pendekatan dalam penelitian ini adalah pendekatan yuridis normatif. rumusan masalah dalam penelitian ini adalah Bagaimana  perusahaan publik dapat merekayasa produknya dengan menggunakan skema Ponzi di pasar modal ? dan Bagaimana Notaris dapat mengenali penerapan prinsip pengguna jasa untuk menghindari pembuatan akta autentik berdasarkan skema Ponzi ? Bahwa Pada saat ini hanya ada beberapa peraturan yang sedikit banyaknya menyinggung pembahasan mengenai ponzi, diantaranya: Undang-Undang No.7 Tahun 2014 tentang Perdagangan, Undang-Undang No.21 Tahun 2008 tentang Perbankan Syariah, Undang-Undang No. 19 Tahun 2016 Jo. UU No. 11 Tahun 2008 Tentang Informasi Dan Transaksi Elektronik Peraturan Pemerintah Nomor 82 Tahun 2012 Tentang Penyelenggaraan Sistem dan Transaksi Elektronik. Ketentuan pidana terhadap kegiatan investasi Berskema ponzi/ bodong diatur dalam Pasal 378 KUHP dan kaitannya sangat erat dengan kejahatan dan ruang lingkup dari pertanggungjawaban pidananya. Notaris sebagai salah satu pihak pelapor sebagaimana dimaksud dalam Peraturan Pemerintah Nomor 43 Tahun 2015 tentang Pihak Pelapor, sebagaimana dimaksud paling sedikit memuat: identifikasi Pengguna Jasa; verifikasi Pengguna Jasa; dan pemantauan Transaksi Pengguna Jasa.Dalam penerapan PMPJ, ketersediaan data nasabah atau Pengguna Jasa, jejak rekam dan berbagai transaksi yang dilakukan, serta administrasi atau penatausahaan dokumen informasi yang baik.
Kepastian Hukum Agunan Tambahan Berupa Buku Pemilik Kendaraan Bermotor atas Penyaluran Kredit Usaha Rakyat Mikro Perseorangan Ditinjau dari Peraturan Menteri Koordinator Bidang Perekonomian Nomor 6 Tahun 2019 dan Undang-Undang Nomor 42 Tahun 1999 Tentang Jaminan Fidusia
Authors: Kartono Kartono , Waruwu Mareti , Oktaviyanti Ary
Published: September 2024

Praktek penyaluran Kredit Usaha Rakyat (KUR) mikro telah menimbulkan penyimpangan yang cukup serius. Penyaluran KUR mikro yang berlandaskan Peraturan Menteri Koordinator Bidang Perekonomian Nomor 6 Tahun 2019 tentang Pedoman Pelaksanaan Kredit Usaha Rakyat berpotensi menabrak ketentuan Undang-Undang Nomor 42 Tahun 1999 tentang Jaminan Fidusia. Agunan tambahan berupa Buku Pemilik Kendaraan Bermotor (BPKB) dalam penyaluran KUR mikro perseorangan telah dimaknai seolah-olah jaminan fidusia. Praktek penarikan BPKB sebagai agunan tambahan dalam penyaluran KUR mikro perseorangan justru merupakan perbuatan melawan hukum karena bertentangan dengan Peraturan Menteri Koordinator Bidang Perekonomian Nomor 6 Tahun 2019 tentang Pedoman Pelaksanaan Kredit Usaha Rakyat. Tidak hanya itu, penyaluran KUR mikro perseorangan juga kontradiktif dengan asas publisitas dan perbuatan melawan hukum sebagaimana dimaksud dalam burgerlijk wetboek maupun Undang-Undang Nomor 42 Tahun 1999 tentang Jaminan Fidusia.
Pendekatan Pembelajaran Kontekstual Pada Kemampuan Berpikir Tingkat Tinggi Siswa Di SMP Adabiyah Palembang
Authors: Karuana Margareta , Arifin Sujinal , Ramury Feli
Published: September 2024

This research purposed to determine the effect contextual teaching and learning approach toward the higher order thinking skills of mathematics student at SMP A Palembang. Types of research was quantitative with True Experimental Design categories posttest-only control design. The population was all class VII in School 2019/2020 academic year consists of six classes. The sample in this research taken by using simple random sampling. From six classes of the population of samples that classes are VII5 as an experiment class and classes are VII6 as a control class with 32 stdents by classes. Conduct research each four times meeting, the first, second and third meeting for learning and the fourth meeting for post-test. Research data collected through test higher order thingking skills and observation contextual teaching and learning. The data obtained from the test are used to test the research hypothesis by using Independent Sample t Test SPSS 21. Statstical calculations obtained from the test result generate sig (2-tailed) = 0,000 < ? (0,05) that causes Ho rejected and Ha accepted. Therefore, it could be concluded that there was an effect of contextual teaching and learning approach on higher order thinking skills of mathematics student at Senior High School Palembang.
Hubungan antara Gaya Belajar Siswa dengan Pendekatan Pembelajaran Multiple Intelligences
Authors: Kusumawati Nyimas Inda , Supriadi Agus , Tendri Muslimin
Published: September 2024

Learning style refers to a student's preferences in obtaining and processing information, whether through sight, hearing, or physical movement. Meanwhile, the Multiple Intelligences learning approach is a learning approach that combines various aspects of learning, including combining several learning styles in the learning process. This research aims to determine the relationship between students' learning styles and Multiple Intelligences learning approaches on learning outcomes in mathematics subjects. The learning styles observed in this research are visual learning style, auditory learning style, and kinesthetic learning style. The method used in this research is descriptive analysis, where data is collected through learning style questionnaires filled out by students and the results of the students' Mid-Semester Exams. The collected data was then analyzed to see the relationship between learning styles and students' Multiple Intelligences approach. Based on the results of data analysis in two schools, it was found that students at SMP Negeri 5 Panukal were dominated by a visual learning style while students at SMK Muhammadiyah 1 Palembang were dominated by an auditory learning style. Meanwhile, students' learning outcomes at these schools are not dominated by certain learning styles. In conclusion, student learning styles have an influence on learning outcomes in mathematics subjects. Students with visual, auditory and kinesthetic learning styles have good learning outcomes. However, students' ability to combine their learning styles has a better impact on their learning outcomes. Therefore, educators need to understand the importance of Multiple Intelligence in the learning process and adapt appropriate learning methods to improve their learning outcomes.
Analisis Kemampuan Problem Solving Ditinjau dari Representasi Matematis Pada Materi SPLDV
Authors: Nabila Dyah Seftiah , Syutaridho Syutaridho
Published: September 2024

This research aims to describe the presentation of problem solving ability incidents in terms of mathematical representation in System of Linear Equations in Two Variables (SPLDV). Problem solving is a learning process that uses students' problem solving abilities with certain stages. Representation is a model or alternative form of a problem situation that is used to find a solution. For example, a problem can be represented using objects, images, words, or mathematical symbols. This type of research is a descriptive qualitative type. The subjects in this research are class VIII students at MTs Darul Huda, Air Kumbang District 7 people, with the subject taking technique using purposive sampling technique. The research instrument used was LKPD with a problem solving approach to SPLDV material. Data collection was carried out by means of interviews and student test results , and draw conclusions.. The results of the research show that students who master 3 mathematical representations are able to solve a problem based on the problem solving stages compiled by Polya. Although there are students who have problems solving problems and have problems re-checking the answers they get
The role and decision-making power of working women in families in New Delhi (India) in the 1991-2022 period
Authors:   University of Social Sciences and Humanities, VNU-HCM, Le Hien Thi Sinh
Published: September 2024

Women in India from ancient to modern times, specifically before 1991, suffered from many disadvantages, prejudices, outdated customs and practices, gender inequality, child marriage, and prohibition of widows from remarrying, etc. However, since 1991, the Indian government has liberalized and restructured its economy, contributing to liberating and empowering women through some family policies. The role and status of women in the family and in society has thus been improved significantly. The article would like to analyze the changes in the role and status of working women in the family in New Delhi (India) in the 1991-2022 period through their decision - making participation in family matters. The article is based on the results of the survey conducted from February to June 2023, of 165 official and marginal female workers in public and private sectors in Delhi, India. The survey results show that the roles of women in the family have been confirmed through housework, full-or-part-time labor force participation, and community activity participation. Although working women are still in charge of household chores, there is a share of husbands and housekeepers in tasks, including cooking, cleaning the house, doing laundry, taking care of and educating children, and emotional connection between family members, which previously in patriarchal families, women had to be responsible for. Women are increasingly having a voice in the family and together with their husbands, they make decisions on all large and small tasks, act as the head of the household, have their names on real estate documents, and participate in community activities. Working Women become more independent in finance and participate in financial management in the family. Among the surveyed women, 78.1% are university degree holders. The survey results also show that 9.4% of them are the breadwinners (the main earners), and 12.7% of them have a higher income than their husbands’. The study has shown the changing role and status of women in the patriarchal families in New Delhi recently. The article contributes to identifying changes in the role and decision-making power of working women in the 1991-2022 period, thereby partly finding changes in the Indian family and society in New Delhi in the modern era.
Spain's Silver Route from a Green Tourism Perspective
Authors:   Academic Association of Global Cultural Contents, Lee Eun Jin , Park Tchi-Wan
Published: September 2024

This essay examines Spain's Silver Route, also known as the “Vía de la Plata”, from the standpoint of ecotourism. Originally used as a logistical route for the transfer of minerals, primarily gold, the Silver Route is now well-known as a pilgrimage path and attracts travelers from all over the world. From the standpoint of ecotourism and green tourism in particular, the Silver Route is a remarkable subject of study since it allows visitors to “walk with nature” and enjoy natural heritage. Furthermore, it is a noteworthy example of green tourism due to its affiliation with Caminos Naturales, the premier ecotourism initiative in Spain. The purpose of this study is to highlight how the Silver Route relates to the ideas of sustainable and green tourism. Above all, a group of municipal governments effectively oversees the Silver Route. Additionally, we discovered instances of community renewal and information and communication technology-based “carbon footprint” reduction initiatives. Enhancing sustainability and securing competitiveness as a tourist destination will be achievable by applying the Silver Route's benefits to Korea's travel sector.
Component professional qualifications of physical education teachers in China
Authors:   National University of Physical Education and Sport of Ukraine, Trachuk Sergii , Diedukh Maryna ,   National University of Physical Education and Sport of Ukraine, Brychuk Mariia ,   National University of Physical Education and Sport of Ukraine, Ivanik Oksana ,   National University of Physical Education and Sport of Ukraine, Epfanova Valentina ,   National University of Physical Education and Sport of Ukraine, Wang Enchen ,   National University of Physical Education and Sport of Ukraine
Published: September 2024

The process of forming a specialist of a qualitatively new level is significantly restrained by the existing gap between the achievements of science and education, therefore the coefficient of useful use of scientific discoveries and new technologies is sharply reduced, fundamental knowledge is displaced from the content of educational processes by applied knowledge. An important type of professional activity is pedagogical, the specialty of which is a special psychological and pedagogical influence on students, taking into account their age and individual characteristics, on interests, inclinations, expectations, enthusiasm; the specificity of such activity consists in the pedagogical management of the process of personality formation and development. The purpose of the study is to determine the components of the professional qualification of physical education teachers in China. Research methods: theoretical analysis and generalization of data from literary sources, sociological research methods (school health profiles lead physical education teacher questionnaire), mathematical statistics methods. Results. 50 Chinese physical education teachers (27 women and 23 men) took part in the study. The experiment was conducted at the Beijing School of Foreign Languages on the basis of the University of Foreign Languages (Beijing), Haidian Experimental School (Beijing), Tsinghua University High School (Beijing), Qingdao Yucai High School (Shandong-Qingdao Province). It was established that for professional growth and professional development, 50% of teachers note the need to expand the knowledge base on interventions involving children in activities with moderate and high-intensity organized motor activity; technologies aimed at the development of individual motor activity programs are of interest to 36% of the surveyed teachers; 26% of physical education teachers want to deepen their knowledge with the latest technologies for the formation of applied motor skills and skills in various sports activities. Conclusions. Therefore, the professional competence of the teacher is manifested in the set of professional knowledge, abilities and skills that reflect theoretical, practical and methodical preparation, the ability to their creative implementation in various social situations of practical professional activity in the field of physical education.
Pengaruh Circuit Training Terhadap Daya Tahan Kardiovaskular Atlet Sepak Bola
Authors: Permadi Aprilio Beny , Bayu Wahyu Indra , Yusfi Herri
Published: September 2024

Penelitian ini bertujuan untuk mengetahui apakah latihan dapat mempengaruhi kekuatan daya tahan fisik pada atlet. Latihan yang digunakan untuk menunjang daya tahan kardiovaskular adalah latihan sirkuit. Jenis penelitian ini adalah penelitian kuantitatif yang menggunakan metode  eksperimen dengan desain penelitian One group Pre test dan Post Test Design. Populasi dari penelitian ini adalah pemain sepak bola G sport batumarta kecamatan madang suku III yang berjumlah 24 orang dengan teknik pengambilan sampel adalah total sampling yaitu 24 orang. Dalam program latihan ini peneliti menggunakan instrumen penelitian pacer-20m. Uji validitas dan reabilitas menggunakan teknik pengumpulan data  pre test dan post test, diolah menggunakan aplikasi SPSS Version 26. Dalam hasil penelitian didapatkan bahwa ada pengaruh yang signifikan terhadap latihan yang diberikan selama 12x pertemuan dengan frekuensi latihan 3x seminggu karena t hitung > t tabel (20,567 > 1,714). Implikasi pada penelitian ini yaitu latihan sirkuit adalah suatu bentuk latihan yang dapat meningkatkan daya tahan kardiovaskular pada atlet sepak bola G Sport Batumarta Kecamatan Madang Suku III.
Bir Sovyetleştirme Metodu Olarak “Kızıl Yurtlar”
Authors: Kumru Coşkun
Published: September 2024

Sovyetler Birliği’nin etnik kültürlerinin, Stalin’in Sovyet milliyet politikalarına yönelik sloganında şart koştuğu gibi “içerik olarak sosyalist, biçim olarak ulusal” olması isteniyordu. Bir Sovyet vatandaşını eğitmek, sadece belirli gerçekleri, konuları ve yöntemleri öğretmek değil, aynı zamanda normları ve değerleri, davranış kurallarını ve dünya görüşünü yaymak anlamına geliyordu. Kızıl Yurt örneğinde bu oldukça açık bir amaçtı ve Sovyet devlet inşasının bir ifadesi olarak dikkat çekiyordu. Kızıl Yurt, Sovyet temsilcileri tarafından istihdam edilen bir personel ekibiyle donatılmış, bir veya daha fazla aul (köy) ile birlikte yazlık otlaklara seyahat etmek üzere görevlendirilen mobil bir yurt anlamına geliyordu. Kızıl Yurtlar (Rusça: krasnye yurty; Kazakça: qyzyl otau) 1925’li yıllardan başlayarak faaliyet gösterdi. Diğer bölgelerde benzer işleri yürütmek için kullanılan “kızıl çayevleri” ve “kızıl çadırlar” gibi Kızıl Yurtlar da hizmet ettikleri topluluklar arasında siyasi aydınlanma için kilit bir kurum olarak kabul edildi. Bu oluşum, aydınlanma, okuma-yazma ve birtakım eğitimlere ek olarak, insanları yeni Sovyet dünya görüşüne göre eğitmeyi ve ayrıca Sovyetlerin yerel halkların gelişimi için zararlı olduğunu düşündüğü dini ve diğer yerli gelenekleri ortadan kaldırmayı amaçlıyordu. Faaliyetlerin odak noktası, esas olarak yeni ideoloji ve toplumsal düzen hakkında eğitilmesi en kolay grup olarak görülen kadınlar ve çocuklardı. Makalemizde Sovyet Kızıl Yurtlarının ortaya çıkışı, amaçları ve faaliyetleri ana hatlarıyla değerlendirilecektir.
Yaşam Seyri Perspektifinden Queer Yaşlanma
Authors: Kara Yunus , Yılmaz Rıza
Published: September 2024

Yaşam seyri perspektifi, bireylerin yaşam deneyimlerinin toplumdaki farklı sistemlerden ve mekanizmalardan etkilendiğini ifade eden bir olgudur. Bu kavram, insanların deneyimlerinin, öykülerinin ve yaşadıkları olayların ve durumların bir sonucunu belirtmek için de kullanılmaktadır. Yaşam seyri perspektifi, gelişimsel ve yaşamsal dönemler, toplumsal roller, kuşaklar arası farklar, fırsatların ve dezavantajların deneyimlenmesine odaklanmaktadır. Yaşam seyri perspektifi, yaşlanma deneyiminin sadece biyolojik ve genetik yapılara indirgenemeyeceğini, bireylerin sosyo-demografik özellikleri ile içinde büyüdüğü ve yaşamını sürdürdüğü sosyal ortamın yaşlanma deneyimini önemli ölçüde belirlediğini savunmaktadır. Bu durum, yaşlılar arasında farklılaşan ve çeşitlenen yaşlanma deneyiminin farkına varılması ve bunların anlaşılabilmesi açısından değerlidir. Toplumda farklı baskı ve ayrımcılık biçimlerinden etkilenen ve çoğunlukla bunlara maruz bırakılan yaşlı LGBTQİA+’ların yaşam seyri perspektifinden ihtiyaçlarının ve sorunlarının belirlenmesi gerekmektedir. LGBTQİA+’ların yaşlanması ile ilgili süreçleri incelerken, toplumumuzda yıllar boyunca baskı gören kişilerin deneyimlerinin ve birçok konuya dair görüşlerinin daha farklı olabileceğini söylemek mümkündür. Yaşlı LGBTQİA+’ların deneyimlerinin yaşlanma sürecinin geçerli bir parçası olduğunu, kendi başlarına duyulmayı hak ettiğini ve yaşlanma süreciyle ilgili olarak insan deneyimi ve davranışına ilişkin önemli ve meşru bir araştırma alanı olarak kabul edilmesi gerektiği önem arz etmektedir. Bu çalışmada, ilk olarak queer yaşlanmaya değinilecek, daha sonrasında yaşam seyri perspektifi açıklanarak, yaşlı LGBTQİA+’ların mikro, mezzo ve makro düzeydeki ihtiyaçlarına ve bu ihtiyaçlar çerçevesinde gerçekleştirilebilecek çözüm önerilerine odaklanılacaktır.
Ethnobotanical survey of medicinal plants in a Caatinga area, in the municipality of Crato (Ceará, Brazil)
Authors: Machado Sara Tavares de Sousa , Batista Paulo Ricardo , Lima Cícera Norma Fernandes , Sousa Jéssica Pereira de , Nascimento Joice Barbosa do , Alencar Cícero Damon Carvalho de , Kerntopf Marta Regina
Published: September 2024

The objective of this study was to carry out an ethnobotanical survey of medicinal species and verify the versatility of these species. The research was carried out in the municipality of Crato, in São Bento neighborhood, from semi-structured interviews seeking information on the use of medicinal plants and their therapeutic indications in the region. Versatility was achieved through relative importance. A total of 21 species were described (most of which are exotic), distributed in 16 families. From the total of species, there were 04 with great versatility regarding the use of Mentha spicata L., Chenopodium ambrosioides L., Ruta graveolens L., Rosmarinus officinalis L. The most representative families were Lamiaceae and Rutaceae. The main parts used of the plants were leaves (42.31%), bark (30.76%), inner bark (7.69%), root, flower, and fruit (3.85% each). The most frequent forms of preparation were infusion (54.55%), lambedor (24.24%), sauce (12.12%), pulp (6.06%) and juice (3.03%). The plants are used for various health problems like flu, fever, headache, and inflammation in general. The data show that local populations hold knowledge that may be useful as a subsidy for ethnopharmacobotanical and phytochemical studies that may lead to the discovery of new herbal medicines.
Craniotomy Tumor Removal for Brain Metastases of Hepatocellular Carcinoma : A Case Report
Authors: Barutu Andri Josua , Hamzah Zainy
Published: September 2024

Introduction: Brain metastases (BM) are the most frequent type of brain tumors in adults and are the leading source of neurological issues related to systemic cancers.
Case Description: Female, 49 years old, presented with decreased consciousness that occurred since 1 month before admission. Weakness of the right limbs is found. CT scan abdomen with contrast show hepatic segment VIII infarction. histopathological examination of hepatic tissue biopsy with the results of hepatocellular carcinoma MRI brain shows multiple lesions suggestive of brain metastasis.
Discussion: Patient was diagnosed with space occupying lesion on the frontotemporal dd brain metastasis dd orbital roof meningioma + multiple space occupying lesion intracranial on the left parietooccipital ec. brain metastasis + hepatocellular segment V, VI, VII, and VIII. Patients underwent craniotomy tumor removal to remove intracranial masses. The patient's postoperative condition showed improvement in the level of consciousness with GCS E4M5V3.
Conclusion. Craniotomy tumor removal provides several advantages for managing patients with brain metastases of hepatocellular carcinoma.
Keyword: Craniotomy, Brain Metastases, Hepatocellular Carcinoma
The Effect of Perceived Ease, Perceived Benefits, and Sales Promotion on Intention to Use with Consumer Behavior as a Moderating Variable in Using Digital Wallets
Authors: Hulu Gracelin Nonifati , Manulang Dea Lonita , Gultom Parapat
Published: September 2024

This study aims to determine the effect of perceived convenience, perceived benefits, and sales promotions on intention to use and consumer behavior in using digital wallets in Medan. Perceived convenience, perceived benefits and sales promotion as independent variables, while intention to use as the dependent variable. This study uses a type of quantitative research, data processing methods using the SmartPLS 4.0 (Partial Least Square) program. The population of this study were all digital wallet users in Medan. The sample was determined by the purpose sampling method, with a sample of 100 respondents. The sample used is Digital Wallet users in Medan. The results of this study indicate that the perceived usefulness variable has no significant effect, while the benefit variable and sales promotion have a significant effect on the intention to use a Digital Wallet.
Pengaruh senam otak terhadap penurunan tingkat Dimensia pada lansia di Panti Sosial Rehabilitasi Sosial Himo-Himo Kota Ternate
Authors: Krisnawati Arini , Almari Fauzi
Published: September 2024

Latar Belakang: Lanjut usia jumlahnya terus meningkat seiring peningkatan kesejahteraan manusiaterutama di negara maju dan berkembang. Karena memnurunnya fungsi tubuh dan pengaruh kognitifakan mengalami dimensia dan dibutuhkan alternatif dalam mendukung upaya dalam membantu lansiadalam mengatasi hal itu. Salah satu intervensi dalam membantu menangani alzmeir adalah melaluicara latihan senam otak Tujuan: Penelitian ini bertujuan untuk mengetahui pengaruh senam otakterhadap penurunan tingkat dimensia pada lansia di panti sosial rehabilitasi sosial himo-himo kotaTernate. Metode: Penelitian kuantitatif one grup Pre-post design dengan pendekatan cross sectional.Populasi pada lansia sebanyak 60 orang pada lansia yang tinggal di panti sosial rehabilitas selamalebih 2 tahun. Pengambilan sampel dengan teknik purposif sampling yang sesuai dengan kriteria.Analisis menggunakan wilcoxon signed ranks test dengan SPSS versi 19.00. Hasil: Mayoritas usiaresponden yang mengalami demensia antara  60-74 tahun,  perempuan lebih dominan (73%), Nilaikognitif sebelum penerapan senam otak lansia sebesar 33% dan setelah perlakuan naik manjadi 53%.Hasil analisis bivariat menunjukan adanya pengaruh pemberian senam otak dengan fungsi kognitiflansia dengan p Value 0,000.Kesimpulan: Terdapat pengaruh pemberian senam otak pada lansiaterhadap penurunan tingkat dimensia. Daharapkan kepada lansia maupun instansi terkait yangmenangani lansia perlu menerapkan metode latihan senam otak sehingga dapat membantu dalammengurangi dimensia.
Literature Review : Perbandingan Hasil Diagnosis Laboratorium pada COVID-19 menggunakan Metode Real Time-Polymerase Chain Reaction (RT-PCR) dan Metode Rapid Test Antigen
Authors: Rahmadhaniati Rahmadhaniati , Rakhmina Dina , Herlina Tini Elyn
Published: September 2024

Latar Belakang: Penyakit Coronavirus 2019 (COVID-19) adalah merupakan krisis kesehatan dunia.Dalam mendiagnosis COVID-19 digunakan beberapa metode, salah satunya adalah RT-PCR danRapis Test Antigen. Tujuan: Membandingkan nilai sensitivitas dan spesifisitas antara metode RTPCR dan metode Rapid Test Antigen. Metode: Tinjauan  literatur ini didapatkan dari tiga database(Pubmed, Science Direct, dan Google Scholar) dan pencarian literatur dilakukan pada bulan oktobertahun 2020. Untuk menguji kelayakan studi digunakan MeSH dan prisma cheklist (judul, abstrak, danteks lengkap). Penyajian dibuat dalam bentuk tabulasi data dan analisis naratif. Dari penelitian inididapatkan dua belas studi yang memenuhi kriteria inklusi. Studi yang ada dibagi menjadi dua bagianberdasarkan tema: sensitivitas spesifisitas dari metode RT-PCR dan sensitivitas spesifisitas darimetode rapid test antigen (n=10) serta sensitivitas spesifisitas dari metode rapid test antigen (n=2).Adapun faktor yang mempengaruhi pemeriksaan metode RT-PCR : gender, gejala, penentuan nilaiCt, nilai sensitivitas, kendala logistik. Sedangkan  faktor yang mempengaruhi dalam pemeriksaanmetode rapid test antigen adalah jenis sampel, petugas pengambil swab, lama pajanan, kandunganvirus, dan faktor pengganggu lainnya. Hasil : nilai sensitivitas RT-PCR, Rapid Test Antigen adalah50,5%-100%,11,7%-93,9%. Spesifisitas RT-PCR, Rapid Test Antigen  adalah 98,4%-100%, 92%100%. Kesimpulan: Metode RT-PCR lebih baik dan lebih tinggi nilai sensitivitas dan spesifisitasnyadari metode Rapid Test Antigen.