bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparison of Dimensionality Reduction Techniques to Improve Performance and Efficiency of Logistic Regression in Network Anomaly Detection
Authors: Ahfa Mokhamad Isna Marzuki , Hakim Lukman , Rosadi Muhammad Imron
Published: January 2025

Network anomaly detection is a crucial process to identify abnormal network traffic, which may pose a security threat. This research aims to improve the performance and efficiency of Logistic Regression (LR) in network anomaly detection by applying dimension reduction techniques, such as Principal Component Analysis (PCA), Truncated Singular Value Decomposition (TSVD), t-Distributed Stochastic Neighbor Embedding (t-SNE), and Independent Component Analysis (ICA). The performance of each dimension reduction method is evaluated based on accuracy, precision, recall, F1-score, and computation time. The results show that TSVD provides the best performance with 95.86% accuracy, 0.96 precision, 0.96 recall, 0.95 F1-score, and 13.83 seconds computation time. In contrast, ICA showed the worst performance, especially in precision, recall, and F1-score, with values of 0.73, 0.83, and 0.78, respectively. Meanwhile, although t-SNE produces competitive accuracy, it has a high computational cost with an execution time of 1698.54 seconds. These findings show that choosing the right dimension reduction algorithm not only improves detection performance but also supports data processing efficiency, making it highly relevant for large-scale network security scenarios. Keywords: dimensionality reduction, Logistic Regression, network anamoly detection, performance evaluation, Truncated Singular Value Decomposition.
Frequency Effects in Human Category Learning
Authors: Yang Dong-Yu , Worthy Darrell A.
Published: January 2025

This study investigated the assumptions of prototype and exemplar models of human category-learning, with a particular focus on the impact of category frequency. We used baseline and recency-weighted variants of prototype and exemplar models to examine the computational mechanisms underlying categorization decisions when one category was presented more frequently than the other. We employed extensive sets of stimuli derived from bivariate normal distributions and manipulated category frequency during training across four experiments using different category structures. In the transfer phases, participants classified novel stimuli. Across all studies, the results revealed a significant frequency effect, with participants showing a preference for categorizing novel items as members of the more frequently encountered category. This preference extended to transfer stimuli outside the trained region of the stimulus space. Model-based analyses indicated that the recency-weighted exemplar model (RW-GCM), which computes summed similarity via a Decay reinforcement learning rule, consistently outperformed other models in fitting the data and accurately reproducing the observed classification patterns across all experiments. Both prototype models failed to account for the observed frequency effects. While the baseline GCM was able to account for frequency effects, it did not capture recency effects. These findings suggest that relative category frequency influences human behavior when categorizing novel items. The computational modeling results revealed that evidence for categorization decisions is recency-weighted and accumulative rather than averaged.
How interoception and the insula shape mental imagery and aphantasia
Authors: Silvanto Juha , Nagai Yoko
Published: January 2025

A major question in cognitive neuroscience is understanding the neural basis of mental imagery, particularly in cases of its absence, known as aphantasia. While research in this field has focused on the role of sensory domains, we propose that the key to understanding imagery lies in the intertwining of sensory processing and autonomic responses. Interoception plays a crucial role in mental imagery by anchoring experiences in first-person physiological signals, providing a self-referential perspective, and grounding the imagery in the body while also enabling its emotional aspects. Moreover, interoception contributes to the sense of agency and volitional control, as well as body schema—key hallmarks of voluntary mental imagery. Therefore, imagery should be approached as an integrated phenomenon that combines sensory-specific information with interoceptive signals. At the neural level, this process engages the insula and anterior cingulate cortex (ACC), regions vital for synthesizing information across cognitive, emotional, and physical domains, as well as for supporting self-awareness. From this perspective, aphantasia may reflect a suboptimal functioning of the insula/ACC, which can account for its associations with deficits in autobiographical memory, emotion perception, and conditions such as autism and dyspraxia.
Small shelly fossils from the Kharayutekh Formation of the Upper Vendian period in the lower reaches of the Lena River in Eastern Siberia
Authors: Novozhilova N. V.
Published: January 2025

The study of problematic skeletal remains from the Kharayutekh Formation of the Upper Vendian period, uncovered along the right bank of the Lena River at the mouth of the Ulakhan-Ald’yarkhay Brook, revealed two distinct levels characterized by finds of small shelly fossils embedded in dark gray limestones. The first assemblage includes problematic skeletal remains with indeterminate systematic affinities, as well as two morphological types of fossil specimens attributed to the genus Tianzhushania. These specimens represent different stages in the embryonic development of this taxonomic group. In addition to Tianzhushania, the second, younger level also contains chancellorids (Chancelloria sp.) and hyoliths (Paragloborilus subglobosus). The material for this study consisted of a collection of several dozen fossilized specimens, obtained through the standard process of chemical preparation, which involved dissolving limestone in a weak acetic acid solution (3–5 %). Based on the findings, it can be inferred that the Tuorasis Basin of the passive continental margin of Siberia during the Late Vendian period provided favorable conditions for the survival and evolution of the microflora discussed in this paper. These discoveries are of significant interest from both paleobiological and stratigraphical perspectives. In the future, it will be crucial to conduct more in-depth research on the morphological features and internal structures of the embryonic fossils found in the Kharayutekh Formation of the Ulakhan-Ald’yarkhay section, employing a microtomographic approach to validate their embryonic nature. Additionally, further sampling of small shelly fossils from the Kharayutekh Formation is essential to enhance the faunal attributes and strengthen the biostratigraphical foundation.
Fatty acid composition of phospholipids in silver birch buds in the winter-spring period in Karelia and Yakutia
Authors: Vetchinnikova L. V. , Titov A. F. , Tatarinova T. D. , Ponomarev A. G. , Vasilyeva I. V.
Published: January 2025

Changes in the fatty acid composition of phospholipids in buds during the winter-spring period (January–May) were studied in silver birch (Betula pendula Roth) growing in Karelia and Yakutia. Phospholipids were isolated from total lipids using column chromatography, while fatty acids were separated through gas chromatography. The metrics for acyl-lipid desaturase activity were represented by the ratios of stearoyl- (SDR), oleoyl- (ODR), and linoleoyl- (LDR) desaturases. Our findings demonstrate that, regardless of geographical location, the predominant phospholipid fraction during the development of primordia within the bud consists of unsaturated fatty acids. During the period of exogenous bud dormancy, dienoic acids were the most prevalent; however, their share declined by the onset of the growing season, while the proportion of trienoic acids increased. These changes were accompanied by a slight rise in the double bond index. Conversely, the unsaturation index nearly doubled by March, with this change being particularly pronounced in Yakutia. Simultaneously, the SDR and ODR values were high, indirectly indicating the active involvement of ω9 and ω6 desaturases in maintaining the liquid-crystalline state of phospholipids. The LDR value in phospholipids was the lowest, yet it nearly tripled by the onset of the growing season in both Karelia and Yakutia. We hypothesize that the liquid state of phospholipids in the cell membranes of meristematic tissue in the buds of silver birch growing in Karelia and Yakutia during the winter-spring period is sustained by high desaturase activity, with the most significant response to temperature changes observed in acyl-lipid ω3 desaturase. Furthermore, through the course of evolution, silver birch in Yakutia has developed an additional mechanism that involves a pronounced reduction in cell and tissue water content, which also contributes to maintaining an ordered state of phospholipids and their functions, particularly when exposed to extremely low air temperatures and permafrost.
Production of graphene-containing carbon powders via fast Joule heating for fiberglass modification
Authors: Prokopev A. R. , Vasilieva E. D. , Loskin N. N. , Popov D. N.
Published: January 2025

The present study outlines the synthesis of carbon that include graphene flakes. The production process employed rapid Joule heating of a mixture consisting of finely dispersed polypropylene powder and carbon black in a 1:1 ratio. An experimental model of the installation was developed and constructed, based on a capacitor bank with a total capacitance of 32 mF and an inductor with a nominal value of 24 mH for production purposes. A solution was prepared that included a colloidal dispersion of epoxy resins, an amine hardener in a mixture of deionized water and ethyl alcohol in a ratio of 4:0.6:10, along with 1 wt. % of the resulting carbon powder and carbon black, to be used as an impregnating compound for glass fibers. The estimated synthesis temperature reached up to 2200 °C, with a duration of approximately 32 ms. Studies of Raman spectra and optical density in the UV range indicate that the synthesized carbon powders contain graphene flakes with lateral dimensions of up to 13 nm. The results of elemental analysis reveal a significant increase in the carbon atom content in the impregnated fiber compared to the original glass fiber. Electrical measurements of the temperature dependence of the current-voltage (C-V) characteristics demonstrated the presence of electrical conductivity at low temperatures, corresponding to a resistance of up to 8 MΩ/sq. In the future, electrical conductivity may be enhanced by increasing the discharge power. The developed configuration for fast Joule heating has the potential to be integrated into the field of efficient recycling of plastic waste. The resulting carbon powders can serve as modifying additives for glass fiber used in the production of fiberglass concretes.
Sistem Informasi Database Petani berbasis QR Code Guna Membantu ICS dalam Proses tracing Bahan Baku dari Petani Gula Semut
Authors: Rifai Zanuar , Wijaya Anugerah Bagus , Oktaviana Luzi
Published: January 2025

Secara umum permasalahan utama yang menjadi penghambat exspor gula semut adalah kualitas gula semut dan bahan baku yang tercemar seperti cemaran fisik, biologis, dan kimia. Hal tersebut tentunya dapat dicapai dengan mengaplikasikan pendekatan system traceability sebagai salah satu bidang keilmuan dalam sistem rantai pasok pangan melalui instrumen digital. Fokus para pelaku usaha gula semut adalah menjaga kualitas bahan baku dari penderes tetap organic dan terjaga dengan baik, Karena kualitas produk sangat bergantung pada bahan baku, kualitas bahan baku terus menerus menjadi perhatian utama salah satu cara agar bahan baku dapat dipastikan kualitasnya adalah dengan membentuk tim ICS (Internal Control System) yang bertugas memastikan penderes yang terdaftar sebagai mitra saja yang dapat mensuplai bahan baku. Urgensi penelitian ini terletak pada permasalahan pelaksanaan ICS (Internal Control System) yaitu adalah data penderes dan pemasok bahan baku gula semut masih belum terdata dengan baik, fungsi ICS (internal Kontrol Sistem) masih belum dimaksimalkan karena keterbatasan system perekaman data penderes, belum adanya system untuk perekaman data penderes dan selama ini hanya mengandalkan excel untuk proses perekaman. Tujuan penelitian ini adalah membuat Sistem Informasi Database Petani berbasis QR Code Guna Membantu ICS dalam Proses tracing Bahan Baku dari Petani Gula Semut. Metode pengembangan system yang dilakukan pada penelitian ini menggunakan metode prototype. Hasil penelitian ini berupa aplikasi database petani yang akan digunakan oleh ICS (Internal Control System) untuk menelususri asal-usul bahan baku gula semut,level tkt aplikasi ini pada level 3 dan luaran penelitian ini akan diterbitkan pada jurnal IJSE pada sinta 4 dan hasil penelitian dosen berupa produk yang dimanfaatkan oleh masyarakat sebagai salah satu indikator IKU Perguruan Tinggi.
ANALISA KEPUASAN PENGGUNA TERHADAP KUALITAS WEBSITE SD XAVERIUS C AMBON DENGAN MENGGUNAKAN METODE WEBQUAL 4.0
Authors: Sari Retno , Pohwain Berkhat Agung
Published: January 2025

Kepuasan pengguna website merupakan hal penting untuk menjadi tolak ukur bagi lembaga pendidikan. SD Xaverius C Ambon ingin meningkatkan kualitas website yang ada sehingga pengguna semakin puas dan banyak melakukan pencarian informasi, interaksi, fitur-fitur mudah dipahami dan koneksi stabil melalui website resmi sekolahdasarxaveriuscambon.sch.id, namun sampai saat ini SD Xaverius C Ambon belum mengetahui kekurangan dari website SD Xaverius C Ambon sehingga membutuhkan evaluasi untuk mengetahui kualitas website dan tingkat kepuasan pengguna. Penelitian ini digunakan untuk mengevaluasi hubungan kepuasan pengguna dengan menggunaan metode webqual 4.0. Populasi dan sampel penelitian diambil dari siswa, guru, dan orang tua di SD Xaverius C Ambon yang menggunakan website. Perhitungan dalam penelitian ini menggunakan SPSS. Berdasarkan tabel uji t, kualitas kegunaan dan kualitas informasi memberikan pengaruh yang tidak signifikan terhadap kepuasan pengguna sebesar -0.870, -0.852 dan kualitas interaksi layanan memberikan pengaruh yang signifikan terhadap kepuasan pengguna sebesar 34,151. Hal ini membuktikan bahwa website SD Xaverius C Ambon berpengaruh terhadap kepuasan pengguna dari segi kualitas kegunaan, kualitas informasi, dan kualitas interaksi layanan
DESIGN OF MANGOSTEEN HARVESTER TO IMPROVE HARVESTING EFFICIENCY
Authors:   Politeknik Pembangunan Pertanian, Bogor, Andaffa Siti Nazwa Nurul
Published: January 2025

Most mangosteen farmers carry out the harvesting process manually by picking the fruit with hands or using a simple mangosteen harvester. As a commodity whose demand continues to increase, improvements in mangosteen harvesting methods are needed to increase the production and quality of agricultural products. The purpose of this study was to identify the components of the mangosteen harvester, to design how the tool works, to describe the harvesting process with the designed tool, and to produce technical drawings of the design. The study uses a quantitative descriptive approach including the physical characteristics of mangosteen fruit, collection of farmer anthropometric data, analysis of workload handling, engineering analysis, and design of tool components. The results of the study on the design of the mangosteen harvester consist of fruit basket components, telescopic poles with a maximum length of 4 meters, a trap net, locking clamps, and fruit protective foam. The tool works with the pulling force from the operator. This tool is designed using AISI 316 stainless steel. Load analysis was carried out using mangosteen release force data with various raya types, which is 1 N. The components of the mangosteen harvester tool were analyzed using the FEA feature with von mises stress, displacement, and factor of safety analysis so that the components are guaranteed to be safe. The design results can later be used to design tools to increase theoretical harvesting capacity, reduce fruit damage during the harvesting process, and increase harvesting time.
CHANGES IN THE PROPERTIES OF MARE'S MILK WITH MODIFICATION OF HORSE FEEDING RATION
Authors:   Bashkir State Agrarian University, A. A. Slinkin , S. G. Kanareikina ,   Bashkir State Agrarian University, V.I. Kanareikin ,   Ufa branch of the Financial University under the Government of the Russian Federation
Published: January 2025

The article presents research data on improving the composition of mare's milk as
an environmentally friendly promising raw material for the production of food products
for various population groups, including athletes.
Food is a source of nutrients necessary for the body, and the value of its
components (biological value of proteins and biological efficiency of fats) is one of the
main requirements for products for the nutrition of special population groups, whose
nutrition should be different depending on age and health status. People engaged in
sports can be singled out as a separate group: they need to strengthen the proteincarbohydrate component of the diet. Such strengthening is possible due to certain types
of raw materials for specialized nutrition [9]. The problem of production of specialized
products is very acute and requires a solution.
In most countries of the world, the horse is studied as a sport animal and only in
some regions of Russia – as a productive animal. Mare milk, a traditional dairy raw
material for the Republic of Bashkortostan, is promising in the context of the abovementioned problem.
New dairy-based food products from local raw materials are relevant within the
import substitution strategy. However, the composition of this raw material can be
modified by introducing a number of additives into the diet of mares, for example, SelPlex additive containing selenium in organic form. Raw materials were analyzed for a
number of parameters: selenium content in mare's milk, physical and chemical
composition of milk, vitamin composition of milk, as well as the content of heavy
metals. From this raw material was produced koumiss. The conclusions indicate the
modification of the quality composition of mare's milk and the possibility of creating
on its basis new types of specialized products, including for the nutrition of athletes.
INFLUENCE OF CALCULATED DOSES OF APPLICATION OF MINERAL FERTILIZERS ON POTATO YIELD
Authors:   Bashkir State Agrarian University, F.F. Avsakhov , N.G. Kurmasheva ,   Bashkir State Agrarian University
Published: January 2025

The use of different doses of mineral fertilizers affected the yield of potato tubers.
The maximum yield was formed in the N130P60K60 variant and amounted to 25.57
t/ha on average over two years. Application of fertilizers at a dose of N60P60K60 also
increased the potato yield and amounted to 21.35 t/ha. A further increase in the
fertilizer dose to N180P60K60 led to a decrease in the yield and amounted to 20.09
t/ha. The minimum yield was in the control variant and amounted to 15.99 t/ha on
average over two years.
The marketability in the control variant in 2022 and 2023 was at the level of 50.3-
79.8%. When using fertilizers, the marketability became higher. The maximum
marketability was formed in the N130P60K60 variant and amounted to 20.2 t/ha on average over two years. A good yield of commercial products was formed in the
N130P60K60 and N60P60K60 variants and amounted to 16.5 and 15.1 t/ha.
Behavioral factors in today’s cryptocurrency markets: A survey among university students
Authors: Saad Raafat Abou , Sági Judit
Published: January 2025

This paper discusses behavioral aspects that drive students to invest in cryptocurrencies. University students represent a growing category of investors within digital finance markets. In today’s society, students invest, for example, in Bitcoin, especially on social networking sites. Using a sample of 104 students from diverse geographic and academic backgrounds, we tested the impact of age and education level on five behavioral factors: the potential for high returns, interest in investment technology and blockchain, recommendations from friends and family, fear of missing out (FOMO), and diversification of investment portfolios. Based on a structured questionnaire, we analyzed the data using cross-tabulations. We also researched specific behaviors using SPSS. Using an analytical framework of decision-making and rational expectations theory, the paper shows that technological sophistication, peer recommendations, and portfolio diversification enhance cryptocurrency investment choices. Seeking high potential returns and FOMO, however, had little impact. The research is helpful for educators, financial advisors, and policymakers This study provides useful information to educators, financial planners, and policymakers who require information on how to implement effective financial competency campaigns for youth to increase positive financial behaviors. These findings provide helpful insights for formulating strategies to improve financial literacy and the application of investment actions among young investors.
Proportional Analytics of Test Samples Reported with Urinary Tract Infection
Authors: R Kushbu
Published: January 2025

Urinary tract infection (UTI) has been reported most often in recent days. In a clinical aspect there are various reasons for this cause. Out of 100 samples tested (Clinical samples from Rashi Diagnostic Center- Bangalore NABL laboratory), under the analytical aspect several comparative analysis was done. Urine was tested within half an hour of the collection. Physical characteristics of Urine sample were studied initially. Laura M is the device used to analyses the Uro-dip. Sugar and the presence of albumin was also found. Sediment of the centrifuged sample was subjected to gram staining and direct microscopic analysis. Pus cells, epithelial cells, yeast cells and rod shaped bacteria. It was found that epithelial cells are visualized in female samples and very less or not visualized in male samples. Bilirubin content, Bile salt content and ketone bodies were analyzed and compared in each of the samples. Sample is then subjected to culturing were the T streak is done on the Mac Conkey agar and Blood agar. This will differentiate between the lactose and Non-Lactose fermenting bacteria. Each of the colony is subjected to Gram staining. Yeast cells are also reported often. Though the yeast cells are the commensals they are considered non- pathogenic. But it was found that the yeast with pseudo-hyphae are pathogenic in nature. Both Lactose and Non-Lactose fermenting bacterial colonies from Blood agar is subjected to various biochemical methods to identify the organism. The most commonly noticed non-lactose fermenting organism was Pseudomonas spp. And Lactose fermenting organisms were Escherichia coli, Enterobacteria spp and Klebsiella spp. Each Colony from the culture plate was picked and streaked on the MHA agar and Kirby Bauer method has been performed (Disc diffusion method) under the McFerland standard. Zone of inhibition of each organism towards the antibiotic in the disc was recorded.
Note on the French Experience for the Choice of the Parameter for the Analytical Survey and Control of Legionella in Water in France from 1999 to 2022
Authors: Philippe Hartemann
Published: January 2025

The first French regulations for the control of Legionellosis were created at the end of the 90s, after two mediatic outbreaks which occurred in Paris. The first outbreak occurred during the summer of 1998, affecting supporters of different teams during the world Football Cup, and the second one followed the opening of the Georges Pompidou Hospital in Paris in 2000. The Ministry of Health, following the ad’hoc working group proposals, took the decision in the early 2000s to base the water regulations within buildings on Legionella pneumophila.
Androgenic Alopecia in a Patient with Systemic Lupus Erythematosus
Authors: María Noemí Da Ponte
Published: January 2025

Hair is not only a matter of personal image, below is a clinical case of a patient with long-standing androgenic alopecia and lupus with suboptimal results after some previous treatments, the management of alopecia is a medical challenge because it is not only an aesthetic condition but also possible risk factors for psychiatric pathologies, timely diagnosis and treatment is important.

There are numerous treatments for androgenic alopecia from topical treatments, oral route and mesotherapy among others. In this particular case, a satisfactory response is presented after starting oral and topical minoxidil.
Insertion Of the Central Insertion Catheter Guided with Ultrasound, Versus Technique by Anatomical References in Adult Emergency Room Patients
Authors: Natarén Cigarroa Eliazib
Published: January 2025

Aim: To evaluate the complications, number of punctures and time of insertion of the central insertion central catheter (CICC) guided with ultrasound (USG) versus technique by anatomical references (TRA) in patients of the adult emergency area of the Dr. Jesús Gilberto Gómez Hospital. Mace.

Methodology: Descriptive, prospective and cross-sectional study, which included patients over 18 years of age, hospitalized in the emergency area of the “Dr. Jesús Gilberto Gómez Maza”, from Tuxtla Gutiérrez, Chiapas, during the period January 2021 to December 2021.

Results: A total of 636 patients were included, of which 46.4% (n=295) were female and 53.6% (n=341) were male, the average age was 47.6 years ± 18.5 years. Of the total sample, the CICC was inserted with USG in 23% (n=136) and in 77% (n=490) with TRA; complications such as multiple puncture were 3.4% (n=5) with USG vs 4.7% (n=23) TRA, pneumothorax 0.0% (n=0) vs 0.2% (n=1) and arterial puncture 2.1% (n= 3) USG vs 3.3% (n=16) TRA, although it was found that complications such as multipuncture, arterial puncture and pneumothorax They were more frequent with TRA , there were no significant differences because a larger sample was required with USG ( X2 3.3122; p value= 0.7688) . Insertion at the first puncture with USG was 75.3% (n=110) versus 69.6% (n=341) for TRA, at the second puncture 19.2% (n=28) versus 21.6% (n=106), and the third or more punctures 5.5% (n=8) versus 8.8% (n=43) with USG versus TRA respectively, resulting in statistically significant greater success with USG (p value= 0.3057). The average duration was 22.85 ± 10.18 minutes in both techniques ( X2= 8.1759; p=0.1468) .

Conclusions: In this study there was no difference in the number of complications presented in each technique used. The ultrasound-guided technique was associated with a lower number of punctures for the installation of a central catheter; studies with a larger sample are required with the ultrasound-guided technique.
Investigation of the Dark Beetle and Its Effect on The Removal of Fungi
Authors: Rajabian Majid
Published: January 2025

The capacity of a single genotype to exhibit variable phenotypes in response to changing environmental conditions (ie, phenotypic plasticity) is common in insects, see reviews of, for example, body size divergence, mating, and life history strategies, population dynamics, replacement and cessation morphologies are triggered by plastic responses to adverse factors such as low temperature or poor nutrition. Climatic ranges are generally associated with heterogeneous environments including microclimatic gradients. Species distributed over such diverse habitats have certain phenological and phenotypic plasticity to adapt without compromising their fitness or biological success. Ecological and evolutionary responses to abiotic change at environmental and temporal scales require the advancement of information. These will improve our capacity to predict how species will respond to local and global environmental change. Some black cockroaches emit an unpleasant odor through the end glands of the body, which is very effective in driving away predators, and this substance changes the color of their bodies. What does this substance include? It can have in its composition that this species repels predators and changes the color of its body, considering that this animal lives in a humid environment, the possibility of preventing the growth of fungi is reduced. And it stops to some extent.
Gender Parity in Riba Literacy: A Comparative Study Among Residents of Sebukar Village
Authors: Amanda Eza , Fauzi Muhammad , Mursal Mursal
Published: January 2025

This study investigates the comparative levels of Riba literacy among male and female residents of Sebukar Village. Employing a quantitative approach, the research utilizes a questionnaire survey administered to 50 males and 50 females. Data analysis is conducted using the Mann-Whitney test to assess significant differences in Riba literacy between genders. Findings reveal no statistically significant disparity in Riba literacy levels between male and female respondents. This research contributes to the existing literature by demonstrating that gender does not appear to be a determining factor in Riba literacy within the specific context of Sebukar Village.
WEB SERVICE MANAGEMENT SYSTEM FOR PREDICTING REAL ESTATE PRICES USING MACHINE LEARNING TECHNIQUES
Authors: KOBETS Vitaliy , FEDCHENKO Konstantin
Published: January 2025

Today there are many different web services for renting real estate, but none of them provides price forecasting capabilities. There is a need to create a platform that allows users to receive accurate real estate price forecasts with minimal time expenditures. The aim of this paper is to develop the architecture of a web service for real estate price forecasting, considering various apartment characteristics. We have prepared a review and analysis of existing analogues of real estate rental web services, functional and non-functional requirements for a web service for apartment price forecasting. The high-level architecture and technical tasks for the participants of our web service were also developed and described in our research.
The paper proposes the development of a web service that predicts real estate prices based on various property characteristics. The key objectives are: analyze existing real estate rental web services and identify functional gaps, particularly the lack of price prediction capabilities; establish technical requirements for a comprehensive web service that unifies tenants, landlords, and administrators to facilitate informed decision-making; utilize machine learning techniques, such as linear regression, random forest, and decision trees, to develop a price forecasting module within the web service; evaluate the performance of different machine learning models using RMSE metric.
The paper presents the high-level architecture of the web service, including modules for user registration, data validation, apartment search and interaction, and price forecasting. The experimental results demonstrate that the random forest model outperforms linear regression and decision trees in predicting apartment rental prices in Kyiv. Overall, the study highlights the potential of integrating machine learning into real estate web services to enhance transparency and informed decision-making for both tenants and landlords.
MEŞRUİYETİ BESLEYEN KAYNAKLARDAN BİRİ OLARAK YÖNETİŞİM: TÜRKİYE ÖZELİNDE BİR ARAŞTIRMA
Authors: Durgun Sadegül
Published: January 2025

Bu çalışmanın amacı yönetimin meşruiyeti ile yönetişim yaklaşımı arasındaki ilişkiyi ortaya koymaktır. Bu doğrultuda çalışmanın hipotezi yönetişim düzeyi arttıkça yönetimin meşruiyetinin de artacağıdır. Literatüre bakıldığında yönetişim ile meşruiyet arasındaki olumlu ilişki çeşitli çalışmalarda ortaya konulmuştur. Bu çalışmada da Türkiye özelindeki durum araştırılmaktadır. Bu kapsamda Dünya Bankası tarafından yayımlanan yönetişim endeksi ve Barış Fonu (The Fund for Peace-FFP) tarafından yayımlanan Kırılgan Devletler Endekslerinden (Fragile State Index-FSI) faydalanılarak Türkiye’ye ilişkin meşruiyet ve yönetişim verileri elde edilmiştir. Elde edilen verilere SPSS programı ile Pearson ve Spearman korelasyon analizleri yapılmıştır. Yapılan analizler sonucunda yönetişim ve meşruiyet arasında pozitif yönlü bir ilişki olduğu bulgulanmıştır. Yani yönetişim düzeyinin artması yönetimin meşruiyetini de artırmaktadır. Bu doğrultuda ülkede yönetişim düzeyini artırmaya yönelik olarak özellikle bilgi ve iletişim teknolojilerinden daha etkili bir şekilde faydalanılarak katılım, şeffaflık ve hesap verebilirlik gibi ilkelerin güçlendirilmesi, kent konseyleri gibi özellikle yerel düzeyde yönetişimi güçlendiren uygulamaların etkili hale getirilmesi, sıfır bürokrasi planları gibi uygulamaların hayata geçirilmesi ve çoğaltılması önerilmektedir.
İSLAM İŞBİRLİĞİ TEŞKİLATI ÜYELERİ ARASINDAKİ YATIRIM ANLAŞMALARINDA YATIRIM KAVRAMI VE ULUSLARARASI YATIRIM TAHKİMİ KARARLARININ İNCELENMESİ
Authors: Dülger Ahmet
Published: January 2025

Devletler arasında yapılan yatırımların karşılıklı teşviki ve korunması (YKTK) anlaşmalarında yatırım genellikle bir çerçeve çizilmek suretiyle tanımlanmakta, bazı mal varlığı değerleri ile ticari faaliyetler de genel özellikleriyle sayılmaktadır. İslam İşbirliği Teşkilatı (İİT) üyesi devletlerin birbirleriyle yaptıkları iki taraflı YKTK anlaşmalarında da yatırımın tanımına ilişkin düzenlemeler bulunmaktadır. Ayrıca, İİT Çok Taraflı Yatırım Anlaşması’nda yer alan yatırım tanımı da uluslararası yatırım hukuku bakımından önem arz etmektedir. İİT üyesi devletler arasındaki uluslararası yatırım rejiminin ortaya konulmasında hakem heyetlerinin kararları da önem arz etmektedir. Buna karşılık, uluslararası yatırım hukukunun uyuşmazlık çözüm merkezlerinden olan ICSID’in kurucu anlaşmalarında yatırımın tanımına ilişkin düzenleme bulunmamaktadır. Bu uluslararası anlaşmalardaki yatırım tanımına dair düzenlemelerin anlaşılabilmesi için İİT üyesi devletlerden Türkiye, Ürdün, Libya, Türkmenistan ve Özbekistan’ın birbirleri arasında yaptıkları YKTK anlaşmaları, İİT Çok Taraflı Yatırım Anlaşması ve örnek olarak farklı ülkelerin YKTK anlaşmalarında yer alan yatırım kavramları ad hoc ve ICSID tahkimi bünyesinde gerçekleşen uluslararası yatırım tahkimi içtihatları da incelenerek değerlendirilmiştir. Bu sayede uluslararası yatırım tahkimi bakımından hangi mal varlığı değerlerinin yatırım olarak kabul edilebileceği ortaya konmuştur. Tahkime gitme hakkı yatırım olarak kabul edilen değerlerden biridir. Ev sahibi devlette uzun süreli ve tekrar eden alım-satım ve kiralama sözleşmeleri yapmak ile ev sahibi devlete know-how getirilmesi de yatırım olarak kabul edilmiştir.
Politisierung der Ressortforschungseinrichtungen in Deutschland / Politicization of Governmental Research Agencies in Germany
Authors: Veit Sylvia , Ebinger Falk
Published: January 2025

In Deutschland greifen die Bundesministerien für wichtige Aufgaben in Forschung, Beratung und Vollzug auf ein breites Arsenal an Ressortforschungseinrichtungen zurück. Diese Einrichtungen unterscheiden sich deutlich in Rechtsform, Aufgabenportfolio und öffentlicher Sichtbarkeit. Gemeinsam ist ihnen ihre Zwitterstellung zwischen Wissenschaft und öffentlicher Verwaltung. Sie sind wissenschaftlichen Grundsätzen verpflichtet, unterliegen jedoch auch dem Einfluss „ihrer“ Ministerien, was Fragen nach der Unabhängigkeit ihrer Arbeit aufwirft. Der vorliegende Beitrag charakterisiert diese weithin unbekannten Einrichtungen. Er fragt, wie sich Ressortforschungseinrichtungen heute im wissenschaftlichen Feld verorten, in welchem Ausmaß sie politisch gesteuert werden und wie ausgeprägt die funktionale Politisierung des Leitungspersonals dieser Einrichtungen imVergleich zu Bundesoberbehörden und Bundesministerien ist. Datenbasis ist der PAE-Survey 2021.
Struktureller Zugang als architektonische Mitwirkung: Interessengruppen und Ministerialverwaltung auf Bundesebene / Structural Access as Architectural Collaboration: Interest Groups and Ministerial Bureaucracy in Germany
Authors: Fleischer Julia
Published: January 2025

Vor fast 30 Jahren untersuchte Marian Döhler (1995) „architektonische Aktivitäten“, die die Ministerialverwaltung gegenüber Interessengruppen einsetzt, um deren Einfluss auf Regierungspolitik mitzugestalten. Darauf aufbauend wird in diesem Beitrag untersucht, inwiefern die Verbändelandschaft ebenso „architektonisch“ wirkt, indem sie zur (Um-)Gestaltung der Aufbauorganisation der Ministerialverwaltung und somit zu den Beziehungen zwischen Exekutive und Interessengruppen beiträgt. Der Artikel untersucht diese Zusammenhänge für die Bundesebene von 1980 bis 2021 und nutzt und aktualisiert Daten zu registrierten Interessengruppen (Klüver, 2020) und zu Strukturveränderungen in und zwischen Bundesministerien (Fleischer et al., 2018). Die empirische Überlebensanalyse zeigt den signifikanten Einfluss von Dynamiken in den Interessenpopulationen auf die strukturelle Stabilität der ministeriellen Organisationseinheiten, auch unter Berücksichtigung alternativer Erklärungen mit Bezug zum Parteienwettbewerb. Abschließend werden künftige Forschungsperspektiven skizziert, umder Relevanz struktureller Dynamiken in der Exekutive für die Einflussnahme organisierter Interessen weiter nachzuspüren.
Bürokratieabbau und Policy Forschung – schon mal voneinander gehört? Warum und wie man voneinander lernen sollte / Reduction of bureaucracy and policy research – ever heard of each other? Why and how we should learn from each other
Authors: Jann Werner
Published: January 2025

Bürokratieabbau und Bürokratiekritik sind seit Jahrzehnten ein Lieblingsthema der deutschen innenpolitischen Debatten und werden in letzter Zeit wieder zunehmend intensiver und hektischer diskutiert. Da dabei die immer gleichen Stereotypen bedient und Lösungen vorgeschlagen werden, und unter Bürokratieabbau alle möglichen Konzepte verstandenwerden, stellt sich die Frage, was die Policy Forschung zu dieser Debatte beitragen kann, denn im Kern geht es immer um Formulierung und Implementierung von Policies, und dabei betrifft Bürokratieabbau nicht nur das Innenleben, sondern gerade die Außenwirkung von Politik und Verwaltung. Der Beitrag argumentiert, dass dieses Thema im Mainstream der Policy Forschung weitgehend ignoriert wird, und skizziert, welche Bereiche der Policy Forschung – von Implementation über Regulierung, Design, Tools, Styles, Integration bis Policy Growth – Debatten zu Umfang, Ursachen und Auswirkungen von Bürokratisierung informieren könnten. Bürokratieabbau, zumindest in der derzeit vorherrschenden Perzeption, ist für die Stärkung demokratischer Institutionen und deren Legitimation kaum die richtige Antwort. Policy- und Verwaltungsforschung sind gefordert, sich gemeinsam dieser ewigen und verwirrten Debatte anzunehmen.
Verwaltungsreformen im Bevölkerungsschutz: Eine Bundesoberbehörde im Zustand der stabilen Fragilität / Administrative reforms in civil protection: A federal agency in a state of stable fragility
Authors: Ibrahim Michael
Published: January 2025

Dieser Beitrag beschäftigt sich mit der institutionellen Entwicklung der für Bevölkerungsschutz zuständigen deutschen Bundesoberbehörde im Zeitraum zwischen 1990 und 2007. Im Kern werden dabei drei Faktoren beobachtet, die eine wesentliche Wirkung darauf entfaltet zu haben scheinen, dass diese öffentliche Organisation fortlaufend tiefgreifend reformiert wurde und trotzdem institutionell persistiert: (1) kritische externe Ereignisse, (2) die grundgesetzbedingte Aufgaben- und Interessenverteilung zwischen Bund und Ländern sowie (3) die Aufgaben- und Interessenverteilung innerhalb der Bundesverwaltung. Diese Einflussfaktoren auf die strukturellen Verwaltungsreformen werden mithilfe des historischen Institutionalismus sowie den Konzepten der Politikverflechtung und der Behördenkonkurrenz theoretisch eingeordnet. Geleitet von diesem Theoriegerüst und basierend auf Primärquellen legt der vorliegende Beitrag nahe, dass die drei Einflussfaktoren einen institutionellen Zustand der stabilen Fragilität erzeugen.
Integrasi Nilai-Nilai Moderasi Beragama Dalam Kurikulum Pendidikan Islam di MA Alkhairaat Kota Gorontalo: Kajian Filosofis Dan Pedagogis
Authors: Wahidah Nor Rochmatul , Kasidi
Published: January 2025

Islamic education based on religious moderation is one of the important strategies in building the character of the young generation who are tolerant, inclusive, and balanced in carrying out religious teachings. This article aims to analyze the integration of religious moderation values in the Islamic education curriculum under Madrasah Aliyah Alkhairaat Gorontalo City, using qualitative research methods. Philosophical and pedagogical approaches are used to examine the concept of religious moderation (wasathiyah) and its implementation in the learning process. This study collected data through in-depth interviews, document analysis, and literature studies. The results of the study show that the values of religious moderation, such as tolerance, justice, balance, and interfaith dialogue, have been integrated into the Islamic education curriculum through a values-based curriculum approach, inclusive learning methods, and strengthening teacher capacity. This integration has a positive impact on preventing radicalism and strengthening a balanced religious identity. Thus, Islamic education based on religious moderation can be an effective fortress in forming a harmonious society and preventing the emergence of extremism among students.
FORMATION OF VALUE CHAINS FOR GREEN HYDROGEN
Authors:   Alfred Nobel University, Fedulova Svitlana O. , Pivovarov Oleksandr A. ,   Dnipro State Agrarian and Economic University, Kalynovskyi Andrii Ya. ,   National University of Civil Protection of Ukraine
Published: January 2025

The world is entering an unprecedented period when our energy systems will begin to radically
change. The article is devoted to the issue of determining the features of the formation of green hydrogen
value chains. The main idea of the study was to identify and describe the potential opportunities for the
rapid growth of the global hydrogen economy and the features of value creation for green hydrogen
in the specified conditions of the global hydrogen economy. It has been noted that the delay in the
development of a systematic and mature hydrogen economy is mainly due to difficult storage conditions
and the safety aspect of its transportation.
It has been substantiated that the green hydrogen value chain can be divided into the following
elements: upstream (production), intermediate (storage and transportation), and downstream (end
consumption). Each of these components of the hydrogen value chain needs to address its own technical
and socio-economic challenges. The hydrogen production process carries production costs, as it is not
a naturally occurring source, making it three times more expensive than fossil fuels. It should also
be considered that storage and transportation can still significantly increase the cost of hydrogen as a
product.
Thus, the storage and transportation of hydrogen reserves present significant challenges. The
study analytically proves that, even though hydrogen has almost three times the energy content of
transportation fuel, it is still almost three times more expensive to use than other fossil fuels under
today’s conditions and prices. At the same time, the article notes that molecular hydrogen is the most
optimistic solution for achieving a carbon-neutral energy economy, and it requires scientific intervention
for its production, storage, and transportation.
Therefore, the production of green hydrogen from renewable energy sources is considered
a potential solution to achieving the goal of reducing carbon emissions in industry, promoting the
development of renewable energy sources, and ensuring energy security for countries. The study
presents potential features of green hydrogen value creation and describes potential ways of using
green hydrogen in the economy in the near future. In the near future, we can expect the use of green
hydrogen in the form of a patented mixture of hydrogen and natural gas (Nythane); in production as a fuel for industrial processes, helping to reduce dependence on fossil fuels and minimizing carbon
emissions (Nythane and synthetic gas, Power-to-X technologies); in production as a raw material for
the production of ammonia and fertilizers; as hydrogen fuel cells for cars; as well as in the energy
production sector. When renewable energy production is high, excess renewable energy can help
electrolysis create more hydrogen in an environmentally friendly way.
AI-Powered Retail Analytics: Leveraging Spatial Data for Enhanced Store Performance
Authors: Vinodhini Chandrasekaran
Published: January 2025

This comprehensive technical article examines the transformation of retail operations through AI-driven spatial analytics and advanced tracking technologies. It explores the integration of customer behavior data with spatial analytics, providing retailers with unprecedented insights into shopping patterns and customer journeys. The article investigates various aspects of retail analytics implementation, including data collection infrastructure, journey analysis frameworks, and transaction integration systems. It demonstrates how retailers can leverage these technologies to optimize store layouts, enhance marketing strategies, and improve overall operational efficiency. The article also addresses critical technical considerations such as privacy, security, and system scalability, while exploring future developments in retail analytics. Through detailed examination of multiple data sources and advanced analytical techniques, this article provides valuable insights into the practical applications and benefits of AI-powered retail analytics, offering retailers a roadmap for implementing data-driven decision-making processes to enhance customer experience and business performance.
Meta-Analysis of Challenges and Solutions in Early Childhood Education in Indonesia
Authors: Faiza A. Dali  , Anton Kaharu  , Rusmin Husain
Published: January 2025

Early childhood education faces many complex challenges in this digital era. This study conducted a meta-analysis of 20 SINTA-indexed journals to identify the main challenges faced by early childhood education teachers and the latest solutions that can be applied. The results of the analysis show that the biggest challenges include innovative curriculum development (52%), collaboration with parents (14%), adapting to technology and the digital era (10%), improving professionalism (10%), conducive learning environment (10%), and managing technology use (5%). Proposed solutions include intensive training for teachers, integration of STEAM-based curriculum, and development of wise technology use policies. This article provides practical guidelines for improving the quality of early childhood education.