bluuebunny/crossref_metadata_2025 huggingface dataset:
Tactile materials as correlates of performance in mathematics among learners who are blind: The case of Thika high school for the blind, Kiambu County, Kenya
Authors: Loise Mumbua Musango  , Margaret Wangui Murugami  , Joel Chomba Wamunyi
Published: May 2024

The purpose of the study was to assess the use of tactile materials as correlates of performance in Mathematics among learners in Thika High School for the Blind. The objectives were to: identify the tactile Mathematics materials used by teachers while teaching learners who are blind, explore the adequacy of the tactile teaching and learning materials, and identify the challenges that teachers face in adapting Mathematic tactile teaching materials. This study adopted social constructivism theory and used a case study research design. Target population was 85 respondents comprising 5 Mathematics teachers and 80 learners who are blind in the school. Purposive sampling technique was used to select Mathematics teachers while stratified random sampling was used to select the learners who are blind according to class and gender. Thereafter, simple random sampling was used to select 24 learners. Questionnaires were used to collect data. Quantitative data was collected, coded and organized. Data analysis was through descriptive summaries and correlational analyses. From the findings, most essential tactile materials for teaching Mathematics were not available in the school. Some teachers were not proficient in Braille Mathematics, thus a major hindrance for them to teach effectively. Many respondents recommended that the government should set aside more funds for Mathematic teaching and learning resources since their use in teaching was of uttermost importance. Therefore, this study recommends a need for the Ministry of Education to introduce AT courses in teacher training colleges. In addition, more time should be allocated in the school timetable for effective use of materials in teaching Mathematics to learners with visual impairment. Also, there is need for proper planning; preparation, presentation, appropriate application and essential follow up make the use tactile Mathematics materials ineffective by the teachers.
Mother's intention to provide balanced nutritious food to children 6-24 months
Authors: Emirta Dwi Arisandi  , Sri Widati
Published: May 2024

Context: The nutritional problem in Indonesia based on SSGI in 2021 is 24.4%, while underweight is 17% and wasted is 7.1% [1]. When compared to the WHO standard regarding the amount of stunting prevalence that is not a problem, which is 20%, the prevalence rate is still considered high and efforts are needed to reduce the prevalence. In Surabaya City, it is known that there are underweight toddlers (BB/U) as much as 7.5%, short toddlers (TB/U) as much as 4.8%, wasting toddlers (BB/TB) as much as 6.1%, and overweight toddlers (BB/TB) as much as 3.4% [2]. Methodology: This research is a cross-sectional descriptive study. The sample size in this study used a saturated sample or the entire population was used as a sample, namely 61 people. Data analysis used in this study is using the chi-square test. Results: Statistical test results of knowledge with intention showed a ρ-value (0.349) > 0.05 which means that there is no relationship. Data analysis regarding the relationship between respondents' attitudes and intentions shows a ρ-value (<0.001) <0.05, which means that there is a relationship. Data analysis regarding the relationship between respondents' subjective norms and intentions shows a ρ-value (0.008) < 0.05, which means that there is a relationship. Data analysis regarding the relationship between respondents' perceived behavioral control and intention shows a ρ-value (0.004) <0.05, which means that there is a relationship. Conclusion: From the results of the study it can be concluded that there is a relationship between attitude, subjective norms, perceived behavioral control with maternal intention. Conversely, the results showed no relationship between knowledge and mothers' intention in providing balanced nutritious food to children.
A ministry to at-risk homeless street youths in the central region of Lusaka, Zambia
Authors: Highten Hamweene
Published: May 2024

The study examined the plight of homeless at-risk street youth who patronize the Lusaka Central Business District. Through observation and interaction, it was revealed that the Seventh-day Adventist Church is not providing an adequate and holistic ministry to the street youth people group. The purpose of this study was to develop, implement, and evaluate a viable intervention and ministry model that seeks to account for both the physical and spiritual needs of street youth. This model is here dubbed the PSR2D model consisting of meeting physical needs, equipping with skills, reform and rehabilitation, and most importantly, discipleship as a way of reaching the street youth. To adequately and meaningfully minister to at-risk street youths, the researcher used the qualitative method to approach the research process. After examining the problem through data derived from focus groups and observations, the researcher designed and implemented a multi-faceted ministry to reach at-risk street youth and thereby create an entering wedge for discipleship. The program started in December 2023 and was completed in March 2024.
Promoting high health, safety, and environmental standards during subsea operations
Authors: Oludayo Olatoye Sofoluwe  , Obinna Joshua Ochulor  , Ayemere Ukato  , Dazok Donald Jambol
Published: May 2024

Subsea operations play a vital role in various industries, including oil and gas, renewable energy, and telecommunications. However, these operations come with inherent risks to human lives, the environment, and operational integrity. This abstract presents a comprehensive approach to promoting high health, safety, and environmental (HSE) standards during subsea operations. The importance of adhering to HSE standards cannot be overstated, as they serve as a safeguard against potential accidents, environmental damage, and reputational harm. This paper outlines the regulatory framework and industry standards governing subsea operations, emphasizing the necessity of compliance and the consequences of non-compliance. Risk assessment and management are essential components of ensuring safety in subsea operations. Strategies for identifying, assessing, and mitigating risks are discussed, alongside the importance of continuous improvement through training and competency development. Furthermore, technology and innovation play a crucial role in enhancing safety and efficiency in subsea operations. From remote monitoring systems to autonomous vehicles, advancements in technology offer new opportunities to minimize risks and improve operational performance. Collaboration among stakeholders, including industry players, government agencies, and research institutions, is essential for driving progress in HSE standards. Effective communication and information sharing facilitate the exchange of best practices and lessons learned, fostering a culture of continuous improvement. In conclusion, prioritizing high HSE standards in subsea operations is paramount for sustainable and responsible development. By embracing collaboration, innovation, and continuous improvement, stakeholders can collectively ensure the safety of personnel, protect the environment, and uphold operational integrity in subsea operations.
Polyphenol content, antioxidant and anti-inflammatory activities of Georgian wine and green Tea
Authors: Levan Gulua  , Nikoloz Shakulashvili  , Ana Tskokilauri  , Taia Kotorashvili  , Narges Pazouki  , Karen Rodrigues  , Mohammadreza Aslani  , Maryam Ghorbani  , Nnaemeka emmannuel Mgbedo  , Saba Rayyani
Published: May 2024

This comprehensive study explores the health-promoting properties of Georgian green tea and red wine, focusing on their antioxidant and anti-inflammatory activities, as well as polyphenol content. Utilizing the DPPH and FRAP methods, we observed impressive results, with green tea showcasing a remarkable FRAP activity of 61.2 % of ascorbic acid activity set as 100 %, surpassing red wine at 18.2 %. Comparative assessments against ascorbic acid for antioxidant activity and Sodium diclofenac for anti-inflammatory effects further underscored green tea's prowess. Intriguingly, green tea exhibited a substantial anti-inflammatory activity of 20 % of Sodium diclofenac also set as 100 %, outshining red wine at 3.7 %. Polyphenol content, a key contributor to health benefits, revealed green tea's concentration at 7.5 % (w/w), red wine's - 4.4 % g/l. These findings highlight the potential of green tea and red wine as a potent source of bioactive compounds with implications for cellular health, inflammation mitigation, and chronic disease prevention. The results prompt a closer look at dietary choices, advocating for the incorporation of green tea to harness its multifaceted health benefits. As we delve into the molecular richness of these beverages, our findings provide valuable insights into the potential therapeutic avenues offered by these popular and culturally significant drinks.
A Proposal of a Method to Promote Creativity Based on Computational Thinking Using Modified Problem-posing
Authors: Fukui Masanori
Published: May 2024

The development of creativity and computational thinking (CT) has been emphasized in education through various studies and research. In activities such as problem-based learning (PBL), students are required to set and solve problems independently. However, it is often difficult for them to discover problems independently, and for teachers to evaluate them appropriately. This study focused on activities where students created problems, that is, problem-posing and examined methods for demonstrating creativity based on CT. Using this method, students were asked to modify and improve the original problem based on CT. The advantages of this method are that it encourages students to understand the structure of the problem, allows them to create entirely new problems, and helps teachers evaluate their work properly.
IMPLEMENTASI WEB SCRAPING UNTUK ULASAN PADA TWITTER MENGGUNAKAN ASOSIASI TEKS (STUDI KASUS: FILM KKN DI DESA PENARI)
Authors: Antoni Frans Xavier Natalius , Satyahadewi Neva , Perdana Hendra
Published: May 2024

Pengguna twitter biasanya memberikan komentar yang berisi mengenai ulasan suatu film yang sedang tayang. Teknik yang dapat digunakan untuk mengambil komentar pada twitter yaitu Web Scraping. Penelitian ini bertujuan untuk mengimplementasikan Web Scraping dalam mengumpulkan data pada twitter dan mengimplementasikan Asosiasi Teks untuk mendapatkan informasi antar kata yang terbentuk. Penelitian ini menggunakan komentar yang berisi mengenai ulasan Film KKN di Desa Penari pada tanggal 30 April 2022. Komentar yang diperoleh tidak semua berisi ulasan, sehingga perlu dilakukan seleksi terhadap komentar tersebut. Hasil seleksi dari 866 komentar diperoleh sebanyak 116 ulasan positif dan 83 ulasan negatif. Data yang diperoleh dari komentar tidak bisa langsung dianalisis, sehingga perlu melalui tahap text preprocessing. Adapun tahap text preprocessing yaitu cleansing data, case folding, spelling normalization, filtering, dan tokenizing. Setelah melalui tahap text preprocessing, ulasan tersebut kemudian dianalisis untuk mendapatkan informasi yang penting dengan menggunakan Asosiasi Teks. Hasil Asosiasi Teks untuk ulasan positif diperoleh informasi bahwa penonton memberikan penilaian terhadap tokoh, akting dan sinematografi yang bagus, kemudian film yang ditayangkan juga sesuai dengan cerita thread pada twitter, dan sinematografi juga keren. Sedangkan untuk ulasan negatif penonton memberikan penilaian bahwa Film KKN di Desa Penari, film yang biasa dan hantu yang ditayangkan juga kurang seram.
PREDIKSI RESIKO GEMPA MENGGUNAKAN MODEL SPATIAL POINT PROCESS
Authors: Rahman Budiono , Utami Tiani Wahyu , Fauzi Fatkhurokhman
Published: May 2024

Pertemuan lempeng Eurasia, lempeng Indo-Australia, dan lempeng Pasifik terjadi di sekitar Pulau Sulawesi dan Maluku. Pertemuan ketiga lempeng ini menyebabkan sering terjadi gempa bumi. Faktor-faktor yang mempengaruhi gempa bumi secara geologis adalah jarak terhadap zona subduksi, gunung berapi, dan sesar aktif. Untuk keperluan mitigasi risiko bencana gempa bumi, perlu dilakukan prediksi risiko terjadinya gempa bumi. Pada penelitian ini menggunakan model inhomogeneous thomas cluster process yang digunakan untuk memprediksi risiko kejadian gempa bumi. Variabel yang digunakan dalam penelitian ini adalah koordinat zona subduksi, sesar aktif, dan gunung api di pulau Sulawesi dan Maluku. Hasil yang diperoleh berdasarkan fungsi K gempa bumi di pulau Sulawesi dan Maluku membentuk cluster. Uji chi-square menyimpulkan kejadian gempa bumi di Pulau Sulawesi dan Maluku bersifat inhomogen (tidak homogen). Berdasarkan model estimasi inhomogeneous thomas cluster process, variabel zona subduksi, sesar aktif, dan gunung berapi mempunyai pengaruh yang signifikan terhadap terjadinya gempa bumi. Dari ketiga variabel yang mempengaruhi terjadinya gempa terbesar (1,8 kali) adalah variabel letak gunung api. Berdasarkan hasil prediksi, Provinsi Gorontalo, Sulawesi Utara, Sulawesi Tengah, Maluku, dan Maluku Utara memiliki risiko gempa bumi yang tinggi.
ANALISIS RISIKO KEBANGKRUTAN PERUSAHAAN ASURANSI JIWA INDONESIA MENGGUNAKAN METODE ALTMAN SPRINGATE, GROVER, DAN ZMIJEWSKI
Authors: Chandra Laura Stephanie , Kusumaningrum Dian , Hidayat Agus Sofian Eka
Published: May 2024

Penelitian ini bertujuan untuk menganalisis risiko kebangkrutan pada perusahaan asuransi jiwa di Indonesia yang terdaftar di Otoritas Jasa Keuangan (OJK). Pada peneltian ini digunakan 4 metode perhitungan risiko yang antara lain adalah Altman Z – score, Springate S – score, Zmijewski X – score, dan Grover G – score. Data yang akan digunakan sebagai objek observasi pada penelitian ini merupakan perusahaan asuransi yang sudah memiliki kepercayaan dan terdaftar di OJK, serta perusahaan asuransi yang mengalami kebangkrutan. Hasil analisis menggunakan metode perhitungan risiko akan dibandingkan dengan kondisi nyata perusahaan. Perbedaan karakteristik metode yang digunakan akan dijadikan rekomendasi terkait dasar evaluasi bagi perusahaan yang memiliki potensi mengalami kebangkrutan. Hasil analisis masing masing metode akan menghasilkan suatu interpretasi yang akan dihimpun untuk dijadikan penentu kinerja perusahaan. Berdasarkan hasil tersebut, penelitian ini bertujuan untuk membantu meningkatkan kesadaran perusahaan asuransi dan pemerintah terhadap risiko kebangkrutan yang ada dalam pengambilan keputusan yang tidak baik terkait kebijakan keuangan dalam perusahaan asuransi.
Implementasi Algoritma Floyd Warshall pada Pencarian Lokasi Puskesmas di Kabupaten Karanganyar
Authors: Tristanto Bayu , Hasbi Muhammad , Vulandari Retno Tri , Widada Bebas , Kusumaningrum Andriani
Published: May 2024

One of the key public health service facilities is Public Health Center (Puskesmas). For new residents, it is very important to have information about the location of the puskesmas or hospital as well as information about the shortest path to the puskesmas or hospital. The size of the region and the volume of traffic present a challenge for people who are unfamiliar with the Karanganyar Regency's routes. The aim of this research is to enable the community to easily locate the health center and to provide access for numerous individuals who require assistance in locating the health center in Karanganyar Regency. Floyd-Warshall research methodology was used in this study to create this system while data collection from Karanganyar District Health Office is then required in this study. The results of this study are in the form of the closest route that is connected to Google Maps, which is information about the location of the health center in Karanganyar Regency which is beneficial for people outside Karanganyar Regency. This study's test findings, which used Floyd Warshall's results approach, further ensure its success in identifying the closest path. The test scenario and the available observations matched 91.6% of the 12 test components, according to the system functionality test. Based on the validity test, it has an average error in predicting the distance from the starting point to the search location of 98%.
Peran AI Chatbots dalam Layanan Mahasiswa Ilmu Komunikasi Menggunakan Metode Natural Languange Processing (NLP) di Universitas Muhammadiyah Karanganyar
Authors: Apriliyanto Erwin , Putra Romi Iriandi , Rahayu Yayu Sri
Published: May 2024

Three technical steps of data collection were used in testing that involved over 100 students: observations, questionnaires, and interviews. After processing, all of the data is collected into a dataset that is kept in the chatbot application database. Obtaining up-to-date information about class schedules, communication science resources, and other academic matters is crucial for students. Therefore, this project intends to provide an accurate and up-to-date source of information by using AI chatbots with the NLP approach, making it easier for students to acquire the material they need. In the exam scenario, each student is required to respond to a minimum of five questions that follow the topics covered in Communication Science curriculum. These questions are processed using the application provided to produce predictions of possible relevant answers. The results of the answers from the chatbot are used to create a comparison matrix between the percentage of chatbot usage and the verification team. The verification team approves all output from the chatbot. Based on the comparison, it can be inferred that the verification team's output percentage was 100%, but the chatbot's production percentage was 95%.
Penentu Industri Kecil Unggulan Dikabupaten Muaro Jambi Menggunakan Metode Simple Additive Weghting (SAW)
Authors: Kurniawansyah Kevin , Marthiawati Noneng , Yuvanda Sesraria
Published: May 2024

Small and Medium Industries (IKM) have an important role in economic development. Muaro Jambi Regency is one of the districts in Jambi Province whose people are engaged in small and medium industrial businesses (IKM). This is inseparable from the important role of the Muaro Jambi Regency Government in supporting the development of small and medium industries (IKM). SMEs in Muaro Jambi Regency are grouped into 5 groups, namely craft SMEs, chemical and building materials SMEs, metal and electronics SMEs, food SMEs, and clothing SMEs. Of these 5 groups, it is necessary to know which group of IKM is growing widely both in terms of the number of IKM, number of workers, investment value and production value. The aim of this research is to find out and analyze which small and medium industrial groups (IKM) are superior in Muaro Jambi district and help simplify the process of selecting superior SMEs in Muaro Jambi district. The analytical model used to determine priorities for leading small and medium industries in Muaro Jambi district is the SAW (Simple Additive Weighting) model. The SAW model is used to formulate a weighted sum of priorities for the performance ranking of each alternative on all attributes, while the system design method uses the System Prototyping method. The result of this research is the SPK system with the SAW model which shows that the leading small and medium industries in Muaro Jambi district selected based on predetermined criteria are the Chemical and Building Materials industry with a total of 0.813
PENERAPAPAN METODE K-MEANS CLUSTERING DALAM PENGELOLAAN KESEJAHTERAAN SOSIAL DI DESA PENTUR
Authors: Hakim Rifaldi Ali , Harjanto Sri , Wibowo Ari
Published: May 2024

Managing aid to improve social welfare in the Pentur village environment is carried out conventionally and requires special attention so that it is not misdirected. Community welfare can be seen from several aspects, namely sufficient income, adequate education and health. The application of the k-means clustering method in managing social welfare in Pentur village will facilitate the performance of the village government in improving the social welfare of its citizens. The clustering process, with the calculations used are variables based on family dependents, monthly income of the head of the family and property ownership. K-Means clustering is a method that divides data into groups that have objects with the same characteristics. The results of applying k-means clustering for the Social Welfare cluster are divided into 3 parts, namely cluster 1 or low gets a result of 11, cluster 2 or medium gets a result of 11, and cluster 3 or high gets a result of 3. The results of the validity test are carried out using calculations silhouette coefficient and produces a global s(i) value of 0.360222796 and can be said to be good because there are no numbers that show < 0 or no over lapping occurs so it can be said that the data that has been processed has good quality.
Self-ignition of dust and gas-air mixtures in the atmosphere of mine workings
Authors: Cherdantsev S.V. , Shlapakov P.A. , Lebedev K.S. , Erastov A.Yu. , Khaymin S.A.
Published: May 2024

The underground mining of coal deposits is usually accompanied by manifestation of a number of negative factors, one of which is the presence of dust and gas-air mixtures consisting of fine coal dust, methane released from the broken coal and the air of the mine atmosphere. Despite modern methods and means of dust suppression and dust collection, it has not yet been possible to achieve complete neutralization of dust and gas-air mixtures in the atmosphere of mine workings. The negative effects of dust and gas-air mixtures can manifest themselves in different ways. On the one hand, deposits of coal dust in the worked-out spaces, under certain conditions, form foci of spontaneous combustion, which are the causes of endogenous fires. On the other hand, dust and gas-air mixtures are predisposed to ignition from external sources or to spontaneous ignition followed by combustion in the form of deflagration, which, under certain conditions, turns into detonation, spreading in the atmosphere of mine workings at supersonic speed. This article considers a nonstationary one-dimensional problem of selfignition of dust and gas-air mixtures in the air flows of mine workings. The temperature and the period of spontaneous ignition of dust-gas-air mixtures are found based on the solution of this problem, expressed numerically using the Geer method. An analysis of the mixture self-ignition process is performed and some patterns of the influence of the parameters of mixtures on the period of their self-ignition are revealed.
Investigation of physical and mechanical properties of ijolite-urtite under uniaxial and triaxial compression
Authors: Kuznetcov N.N. , Pak A.K.
Published: May 2024

The study of deformation and failure processes in rock masses is often carried out in laboratory conditions on samples. Widely used test equipment is used for this purpose, which makes it possible to create loading conditions similar to those inside the rock mass. Basically, the loading mode is implemented when forces are applied only to one side of the sample (along one axis), that is, uniaxial compression or tension. Test equipment that allows creation of loading along three axes, i.e. triaxial compression, is used less frequently. Such equipment is often very expensive, and testing requires a lot of time and resources. Nevertheless, this loading mode is one of the most interesting, since it is close to real conditions in the rock mass. This paper presents the results of experimental studies of ijolite-urtite samples (rocks from the Khibiny massif, the Kola Region) in conditions of uniaxial and triaxial compression. The purpose of the research is to establish how the values of the compressive strength of this rock change, to assess the critical values of the specific strain energy, as well as the tendency to dynamic destruction during the transition from the uniaxial loading mode to the triaxial one. The experimental studies revealed that there exists a sharper increase in the values of compressive strength and the critical values of specific strain energy of the ijolite-urtite samples in conditions of triaxial compression than under uniaxial compression. It has been established that the studied rock is prone to dynamic failure under uniaxial compression and preserve its tendency to this type of failure under triaxial compression.
Verification of the structural and tectonic framework of the Nezhdaninskoye open-pit mine rock massif
Authors: Arno V.V. , Lomakina N.E. , Garifulina I.Yu. , Elnikova E.A. , Elnikova E.A. , Mikkelsen Е.A. , Golubev I.A.
Published: May 2024

The article analyses the studies of factors affecting bench stability in the Nezhdaninskoye open-pit mine. It is determined that the fundamental factors are the vector location and characteristics of faults and cracks in the rock massif. The following three main systems of extended block-forming fractures were defined: (1) subvertical fractures with strike azimuth A = 290°; (2) fractures with strike azimuth A = 50° and dip angle into the massif P = 70°; (3) fractures with strike azimuth A = 50° and dip angle into the pit P = 40°. Basically, the extended surfaces of the rock massif discontinuities lie at an angle of 40-50° towards the mined-out space of the open pit. Individual extended fractures have the angle of 60-65°. The most probable fracture systems involved in bench collapse in case of unfavourable combination of the slope direction and the fracture system's dip are traced in the south-eastern walls of the open pits. There are no unfavourable surfaces in the northern and north-western walls. At the same time, faults running parallel to the benches create potential collapse zones, which requires additional measures to ensure their stability. The structural and tectonic framework of the rock massif has a significant impact on the formation and stability of the open-pit benches. Taking these factors into account when planning and developing open-pit mines will help ensure occupational safety and high efficiency of the mining process.
On sequestration of man-made carbon dioxide by forests and steppe vegetation of the Republic of Tyva
Authors: Kulikova M.P. , Tas-ool L.Kh.
Published: May 2024

INTRODUCTION. Currently, a coal mining territory is being formed in the Republic of Tyva, the volume of coal mining, the “carbon intensity” of production, and СО2 emissions into the atmosphere are increasing. Emissions of the man-made СО2 into the atmosphere caused by combustion of hydrocarbon fuels, wildfires, deforestation and land use development change the natural СО2 balance in the atmosphere, which is manifested in the photosynthesis and respiration processes of plants with the formation of natural carbon sinks. OBJECTIVES. The research aims to correlate the calculated data on the degree of atmospheric pollution by carbon dioxide emissions from stationary and mobile sources with the sequestration potential (with respect to СО2) of the forest and steppe ecosystems of the Republic of Tyva. RESULTS. The sequestration potential of the ecosystems of the Republic of Tyva makes it possible to capture both its own carbon dioxide emissions (fuel combustion) and those introduced from other regions. CONCLUSIONS. The total impact of the man-made СО2 on the atmosphere in the city of Kyzyl relative to other regions is low, amounting to 1,41 million t-eq СО2/year; currently, the territory of the Republic of Tyva is characterized by an excess of the sequestration capacity of man-made СО2 (7,46 million t-eq СО2/year).
Development of a method to reclaim off-grade emulsion semi-finished products of industrial explosives
Authors: Panfilov S.Yu. , Dudnik G.A. , Tikhonov V.A. , Nazarov S.S. , Melnikov N.O. , Akinin N.I.
Published: May 2024

The research is aimed at improving the methods to produce and apply in the mining industry energy-intensive emulsions based on concentrated solutions of inorganic salts (nitrates), which are second-class dispersions of the "Water-inOil" type. Every year when mining useful minerals, surface and underground operations consume about 1.15 million tonnes of industrial emulsion explosives (IEE), the largest share of which are the so-called caseless pouring types. When the emulsion matrix is produced, it is possible that off-grade emulsion, i.e. emulsion that does not meet the requirements of the relevant normative and technical documentation, may also be generated. Tentatively, the volume of such production waste may reach 57.5 thousand tonnes per year. Therefore, the issues of reclaiming the off-grade emulsion semi-finished products of industrial explosives into initial products for their reuse is not only of scientific and technical interest, but also of great economic and ecological importance. The objective of this study, performed by employees of AZOTTECH LLC in cooperation with the D. I. Mendeleev Russian University of Chemical Technology, is the development of a method and industrial technology to recycle emulsion production wastes for re-use of the reclaimed materials in production. A chemical method of controlled emulsion destruction was obtained based on the results of the performed research activities. The most effective demulsifier available in the Russian market was selected, by means of which it was possible to separate the emulsion into immiscible phases containing the initial components. Samples of the stable emulsion matrix that match the requirements of the normative documents in terms of quality, were obtained using the oil phase reclaimed materials and the oxidant solution.
Optimisation of the gas cylinder equipment operation of ALROSA's compressed gas utility vehicles in conditions of Yakutia
Authors: Dubov G.M. , Dvorovenko I.V. , Azikhanov S.S. , Zyryanov I.V. , Logvinov I.A. , Popov D.K.
Published: May 2024

The paper justifies the relevance of using compressed natural gas as the motor fuel for utility vehicles in conditions of the high north and the Republic of Yakutia. Natural gas as an alternative energy carrier is stated to have a number of advantages over diesel fuel, however, its use in extremely low temperatures, in particular, in Yakutia, is associated with some challenges. A number of technical solutions are proposed to maintain a constant temperature of compressed natural gas contained in the gas cylinders onboard of the utility vehicles. The paper provides a detailed description of the methods to maintain the required temperature of the compressed natural gas in the gas cylinders using heat from the exhaust gases of the combustion engine, as well as by means of flexible electric strip heaters. One of the possible ways to separate heavy hydrocarbons (C5-C7) that negatively affect the performance characteristics of the combustion engines and the operation efficiency of the gas cylinder equipment is described for production of the compressed natural gas for utility vehicles. Technical requirements are determined for rubber products of the gas cylinder equipment that operate at low ambient temperatures. The article suggests the optimal quality characteristics of the frost-resistant rubbers and sealing materials that are most suitable for application in conditions of Yakutia.
What can the 1985 Soviet film The Most Charming and Attractive tell us about attitudes toward the consumer culture of the late Soviet era?
Authors: Smart Freya
Published: May 2024

This essay explores whether the 1985 Soviet film The Most Charming and Attractive, which presents a negative attitude toward late Soviet consumer culture, can tell us anything about real Soviet attitudes toward the consumer culture of the late Soviet era. This essay explores the film’s status as a form of popular entertainment and a propaganda device and argues that this status significantly limits the film’s ability to act as a reliable historical source since ideological and financial pressures would likely have been prioritised over historical accuracy. Ultimately, The Most Charming and Attractive cannot tell us anything useful about real attitudes toward consumer culture in the Soviet Union.
Policy brief: Responding to the influx of Ukrainian refugee students in Lesser Poland Voivodeship’s education system
Authors: Weir Kate
Published: May 2024

This brief explores how Poland’s education system has responded to the influx of Ukrainian refugee students since the start of the Ukraine-Russia War. In Poland, only 40% of Ukrainian refugee students are enrolled in schools, and the content taught in Polish classrooms can lack inclusivity. To combat this, Poland is offering segregated and immersive schooling options. Both approaches strive to enhance student learning and wellbeing. This brief recommends maintaining the option of both schooling approaches and supports Ukrainian refugee teachers being redeployed as multicultural assistants who can help engage parents and students in Polish schools and overcome the language barrier.
The use of the principal component analysis in ranking hemp (Cannabis sativa L.) accessions according to the seed oil fatty acid composition for crop improvement
Authors: Grigoriev S. V. , Illarionova K. V. , Podolnaya L. P. , Shelenga T. V.
Published: May 2024

The use of modern methods for assessing the genotypic diversity of breeding material is effective in crop improvement. Interpretation of the results of a study of the fatty acid biochemical composition in seeds of hemp (Cannabis sativa L.) accessions is one of important stages in breeding oilseed varieties, since hemp possesses a unique fatty acid composition (FAC) among other oilseed crops in Russia. Studies of regularities in formation of seed oil FAC and the principal component analysis (PCA) of fatty acid contents have scientific significance and practical value for ensuring the acceleration of oilseed variety breeding aimed at improving quality and biological activity of oil. The use of PCA can be an effective in achieving this goal. The fatty acid profile of oil has been evaluated at the N.I. Vavilov Institute of Plant Genetic Resources in 25 hemp accessions from the VIR hemp collection. Local and industrial hemp varieties and breeding material of the Middle Russian ecotype were grown in Penza Province with a temperate continental climate on meadow-black soils of the Middle Volga Region of Russia. The seed oil FAC was studied using gas-liquid chromatography with mass spectrometry on an Agilent 6850 chromatograph. The results were processed using the UniChrom and AMDIS software. High content of omega-3 stearidonic fatty acid was found in accessions k-205 from Ukraine (1.23%) and k-168 from Russia (0.87%); that of α-linolenic acid in k-168 from Russia (0.82%) and k-224 from GDR (0.39%); of linoleic acid in k-154 (67.29%), k-360 (66.24%), and k-150 (64.58%) (all three from Russia); of γ-linolenic acid in k-88 from Russia (2.43%) and k-211 from GDR (1.92%). It has been established that the formation of hemp seed oil FAC is a multifactorial process. The main factor determined 27.8% of the variability. The presence of both positive and negative factor loadings was revealed. The highest factor loading for the variance of a complex of characters of the oil FAC is on the main factor, i.e. linoleic acid (+0.73). In relation to this acid, negative loadings were detected for myristic acid (−0.81), lauric acid (−0.78), palmitoleic acid (−0.72), and oleic acid (−0.72). The content of bioactive omega-6 diunsaturated linoleic acid was negatively associated with the content of omega-9 monounsaturated oleic acid, as well as with the content of polyunsaturated omega-6 γ-linolenic, omega-3 stearidonic, and omega-3 α-linoleic acids. The obtained information can be used for identifying accessions with the optimal FAC for their involvement in breeding oilseed hemp varieties.
VIR cotton collection accessions of different origin for breeding in the North Caspian conditions
Authors: Podolnaya L. P. , Grigoriev S. V. , Myagkova E. G.
Published: May 2024

Background. Climate change on the planet requires the creation of cultivars adapted to new conditions, which suggests a constant search for sources of the required traits, and the VIR cotton collection provides unlimited opportunities for breeding. Also, the harsh conditions of the northwestern Astrakhan region make it possible to identify the potential capabilities of the accessions. Materials and methods. 25 accessions of the VIR cotton collection were studied at the Caspian Agrarian Federal Scientific Center of the Russian Academy of Sciences (PAFSC RAS) in 2021 against the backdrop of adverse weather conditions. Comparative assessment of morphological and economically important features was carried out according to the VIR methodology. Factor analysis based on the principal component method has been performed. Excel 2016 and STATISTICA 7.0 were used. Results and discussion. The study resulted in the identification of accessions exceeding the ʻAC 5ʼ standard in terms of the yield. The Chinese accessions had a very good fiber yield and can serve as sources of this trait, although they are not too precocious and are characterized by a medium-size capsule. Unfavorable weather conditions during the period of fiber formation did not facilitate obtaining a very good quality fiber, but some accessions yielded fiber with a length of 32-33 mm. Conclusions. Factor analysis showed that American accessions are the least suitable for the conditions of the northern Astrakhan Region due to their late maturity and tall stature. The search for appropriate sources is promising among accessions originating from other regions.
Vaquillonas de reposición en sistemas de cría: impacto de caracteres morfoestructurales y de desarrollo sobre el desempeño reproductivo
Authors: Romero Monteleone S. I. , Smahlij J. M. , Navarro Krilich L. M. , Yostar E. J. , Capellari A.
Published: May 2024

La recría de vaquillonas de reposición en sistemas de cría es un factor importante que afecta directamente la productividad de las empresas ganaderas. El objetivo de este estudio fue evaluar el desempeño reproductivo de vaquillonas en el primer servicio, considerando variables morfoestructurales y de desarrollo reproductivo. Se utilizaron 142 hembras de 22 a 24 meses de edad cruza cebú, previamente seleccionadas por peso (se consideró un mínimo de 67% del peso estimado para una vaca adulta bajo el sistema). Se utilizó un diseño observacional antes del servicio en el que se dividieron en 3 grupos según, grado de desarrollo reproductivo (GDR 1 a 3), peso vivo (PV), condición corporal (CC 1-9) y mediciones zoométricas. El servicio fue realizado mediante inseminación artificial a tiempo fijo (IATF) y servicio natural. El diagnóstico de gestación se llevó a cabo a los 32 días luego de la IATF y 35 días después de retirados los toros para el servicio natural. Los resultados demostraron diferencias significativas entre las variables de crecimiento y desarrollo, excepto en perímetro de la caña y alzada a la grupa. Para PV las GDR1 fueron 10% más pesadas que las GDR3. La prueba de χ2 encontró asociación entre servicio natural y GDR con 50, 82 y 32%, como así también en la preñez general de 84, 92 y 67% de preñez en GDR 1, 2 y 3, respectivamente. En conclusión, para la selección pre-servicio en vaquillonas de reposición, es importante considerar no solo el peso vivo, sino también el grado de desarrollo reproductivo y las variables zoométricas.
Primer registro del ciervo Axis axis como hospedador para adultos y ninfas de Rhipicephalus (Boophilus) microplus en Argentina
Authors: Pertile C. N. , Nava S. , Fernandez Tovo M. E. , Paz D. S. , Sarmiento N. F.
Published: May 2024

El objetivo de esta publicación es dar a conocer nuevos registros de una asociación parásito- hospedador entre garrapatas (Acari: Ixodidae) y el ciervo Axis axis, en Argentina. Los muestreos fueron realizados en Mercedes, Corrientes, Argentina. Las garrapatas, colectadas sobre dos ejemplares machos de A. axis, fueron determinadas como dos partenoginas, doce metaninfas, una neogina y cuatro machos de Rhipicephalus (Boophilus) microplus. El hallazgo presentado en este trabajo representa el primer registro de adultos y ninfas de R. microplus parasitando A. axis para Argentina.
Inclusión de harina de larvas de Mosca Soldado Negra (Hermetia illucens) en la nutrición de peces y crustáceos
Authors: Puebla Calinski P. B. , Chuquillanqui Huamán D. X. , García Pio M. , Zapata Mandujano R. , Cajusol Bravo O. , Torres Zevallos U.
Published: May 2024

El crecimiento de la industria acuícola ha sido impulsado por la creciente demanda global de alimentos y la preocupación por la sobreexplotación de recursos naturales y el impacto ambiental. Para abordar estos desafíos, la acuicultura ha buscado alternativas sostenibles e innovadoras. En este contexto, la inclusión de insectos, como la Mosca Soldado Negra (Hermetia illucens), en la dieta de peces y crustáceos surge como una solución prometedora debido a su alto contenido de proteínas, lípidos y minerales. Este artículo de revisión analiza el papel de la harina de larvas de Mosca Soldado Negra en la acuicultura. Examina los beneficios económicos, nutricionales y ambientales de la harina en la dieta de los animales acuáticos, así como los resultados de investigaciones recientes sobre dosificación adecuada, calidad de crecimiento, salud intestinal y disponibilidad de nutrientes en diversas especies acuícolas. Se enfatiza que la harina de larvas de la Mosca Soldado Negra ofrece beneficios nutricionales comparables a la harina de pescado, siendo una fuente rica en proteínas y lípidos, y su inclusión en la dieta de especies acuáticas como peces y crustáceos ha demostrado mejoras en el crecimiento, la salud intestinal y la calidad de los productos finales. A pesar de estas ventajas, se señala que la sustitución completa de la harina de pescado por la harina de insectos no es la solución definitiva, ya que pueden surgir desafíos relacionados con la regulación, la crianza masiva de insectos y la composición de nutrientes. Sin embargo, la harina de larvas de Mosca Soldado Negra se destaca como una alternativa valiosa para diversificar y mejorar la sostenibilidad de la alimentación en la industria acuícola, contribuyendo a la seguridad alimentaria y al cuidado del medio ambiente.
Importancia cultural (Volumen II)
Authors: Burgos Solorio Armando , Tello Salgado Isaac
Published: May 2024

Los autores de esta obra han plasmado sus experiencias e interpretaciones de los procesos biológicos e invitan al lector a explorar uno de los principales retos que para la ciencia que deriva del estudio de la biodiversidad de la entidad y del país. El estado de Morelos alberga una importante e interesante riqueza biológica. Las investigaciones previas permiten hacer un balance de lo hasta ahora conocido y desencadenan un análisis detallado contenido en esta obra.
Educación, movilidad, migración y exilio: miradas desde México
Authors: Izquierdo Isabel
Published: May 2024

Los trabajos incluidos en esta obra son el resultado de una invitación a estudiantes de posgrado y profesorado, integrantes de la Red Académica de Migración y Educación (RAME). Todos los autores han participado activamente en el seminario de investigación permanente (presencial y virtual) de la RAME, desde el 2012 y, en esta ocasión, comparten su primera publicación colectiva. La obra se integra de diez capítulos, en cada uno se muestra la riqueza de conocimiento que se está generando desde los espacios de investigación y docencia en las Instituciones de Educación públicas, en México. Se presentan las rutas metodológicas, los acercamientos teóricos y conceptuales, así como los hallazgos y las creativas propuestas de investigación en los estudios sobre migración, movilidad y exilio, desde el campo de la educación, en los diferentes niveles, contextos y procesos.
Zhejiang traditional gardens: history and issues of museumification
Authors: Yu Wang
Published: May 2024

This paper takes the Zhejiang traditional garden museums as research object, elaborates their historical causes, generalizes the garden types and characteristics, analyzes the issues existing in the museumification process, explores the practical significance of development of Zhejiang traditional garden museums, proposes the protection and development strategies, and expects to provide reference and pathway for promoting the Zhejiang traditional garden museumification.
A Cognitive-Motor Framework for Spatial Navigation in Aging and Alzheimer’s Disease
Authors: Hill Paul , Ekstrom Arne
Published: May 2024

Spatial navigation is essential for wellbeing and independence and shows significant declines as part of age-related neurodegenerative disorders, such as Alzheimer’s disease. Navigation is also one of the earliest behaviors impacted by this devastating disease. Neurobiological models of aging and spatial navigation have focused primarily on the cognitive factors that account for impaired navigation abilities in older age and Alzheimer’s disease. The contributions of physical factors that are essential to planning and executing movements during successful navigation, such as gait and dynamic balance, are often overlooked despite also being vulnerable to early stages of neurodegenerative disease. We review emerging evidence that spatial navigation and functional mobility each draw on highly overlapping sensory systems, cognitive processes, and brain structures that are susceptible to healthy and pathological aging processes. Based on this evidence, we provide an alternative to models that have focused primarily on spatial navigation as a higher order cognitive function dependent on brain areas such as the hippocampus and entorhinal cortex. Instead, we argue that spatial navigation may offer an ecologically valid cognitive-motor phenotype of age-related cognitive dysfunction. We propose that dual cognitive-motor deficits in spatial navigation may arise from early changes in neuromodulatory and peripheral sensory systems that precede changes in regions such as the entorhinal cortex.
Evaluation of the false memory literature: The state of affairs on open science practices
Authors: Wiechert Sera , Leistra Phaedra , Ben-Shakhar Gershon , Pertzov Yoni , Verschuere Bruno
Published: May 2024

In response to the replication crisis in psychology, the scientific community has advocated open science practices to promote transparency and reproducibility. Although existing reviews indicate inconsistent and generally low adoption of open science in psychology, a current-day, detailed analysis is lacking. Recognizing the significant impact of false memory research in legal contexts, we conducted a preregistered systematic review to assess the integration of open science practices within this field, analyzing 388 publications from 2015 to 2023 (including 15 replications and 3 meta-analyses). Our findings indicated a significant yet varied adoption of open science practices. Most studies (86.86%) adhered to at least one measure, with publication accessibility being the most consistently adopted practice at 73.97%. While data sharing demonstrated the most substantial growth, reaching about 75% by 2023, preregistration and analysis script sharing lagged, with 20-25% adoption in 2023. This review highlights a promising trend towards enhanced research quality, transparency, and reproducibility in legal false memory research. However, the inconsistent implementation of open science practices may still challenge the verification, replication, and interpretation of research findings. Our study underscores the need for a comprehensive adoption of open science to substantially improve research reliability and validity, fostering trust and credibility in psychology.