bluuebunny/crossref_metadata_2025 huggingface dataset:
RİSK EĞİLİM ENDEKSİ İLE RİSK GÖSTERGELERİ ARASINDAKİ İLİŞKİLERİN BELİRLENMESİ
Authors: Kamışlı Serap
Published: October 2024

Yatırımcıların risk eğilimleri, yatırım kararlarında rol oynayan en önemli faktörlerden biridir. Yatırım ufku, yatırım yapılacak piyasanın seçimi, portföy yönetim stratejisinin belirlenmesi ve menkul kıymet tercihi gibi yatırım bileşenleri yatırımcının riske karşı tutumuna bağlı olarak şekillenmektedir. Özellikle son yıllarda, yatırımcı davranışlarını, yatırım kararlarını etkileyen psikolojik faktörleri ve yatırımcıların risk eğilimlerini inceleyen pek çok çalışma finans literatüründe yerini almıştır. Davranışsal finans alanında yapılan bu çalışmalar piyasa hareketlerinin tahmin edilmesi amacıyla hem yatırımcılar hem de politika yapıcılar tarafından kullanılabilmektedir. Bu nedenle gerek global gerekse ulusal ölçekte birçok endeks geliştirilmektedir ve geliştirilen bu endekslerden biri de Risk Eğilim Endeksi’dir. Öte yandan, geliştirilen endeksler üzerinde etkili olan faktörlerin tespiti de endeksin gelecekteki yönü konusunda tahmin yapılabilmesine olanak sağlamaktadır. Bu bağlamda, çalışmada, farklı risk göstergeleri ile Türkiye finansal piyasalarında yatırım yapan yatırımcıların risk eğilimleri arasındaki ilişkinin zaman boyutunda belirlenmesi amaçlanmıştır. Bu amaç doğrultusunda söz konusu değişkenler arasındaki ilişkiler, Breitung ve Candelon (2006) tarafından geliştirilen frekansta nedensellik testi ile analiz edilmiş ve ilişkilerin zamana bağlı olarak değişim gösterdiği tespit edilmiştir.
MEDIATING AND MODERATING VARIABLE EFFECT OF FINANCIAL KNOWLEDGE ON THE RELATIONSHIP BETWEEN FINANCIAL ATTITUDE AND FINANCIAL BEHAVIOR
Authors: Mutlu Ümmühan , Çevik Filiz , Çelebi Boz Füsun
Published: October 2024

Today's economic conditions, developments in information and communication technologies and the impact of digitalization have obliged individuals to exhibit more responsible financial behavior. In this context, the role of financial information is very important in helping individuals make correct financial decisions and engage in responsible financial behavior. Although there are many studies in the literature on financial knowledge, attitudes and behavior, there are few studies examining the moderating and mediating effects. In this study, first of all, the relationship between individuals' financial attitudes and financial behaviors was determined. Then, it was investigated whether financial information has a moderating and mediating effect on this relationship. The data of the research was obtained through the survey method from 402 university students studying in different departments and with various demographic characteristics. Correlation analysis and regression analysis were conducted on the data collected from the sample through questionnaires utilizing SPSS 21.0 software. Analyzes regarding the mediation and moderation effects were carried out using the SPSS Process plug-in. The first finding of the research is the existence of the effect of financial knowledge as a mediating variable on the relationship between participants'. Another result of the research is that financial knowledge has a partial moderating effect on the relationship between participants' financial attitudes and financial behaviors.
Türkiye Elektrik-Elektronik Sektörünün Rekabetçiliği ve Ürün Haritalaması Yöntemiyle Analizi
Authors: Çeştepe Hamza , Şıklı Sezin
Published: October 2024

Elektrik-elektronik sektörü; günümüzde Ar-Ge faaliyetlerine dayalı teknolojik gelişmelerin yoğun olarak yaşandığı, yüksek katma değer yaratan, üretim ve istihdama önemli katkı sağlayan sektörlerden biridir. Bu sektör, teknolojik birikimleri ortaya çıkararak yeni ürünleri ülke ekonomisine kazandırmakta, dolayısıyla ülkelerin dış ticaret yapısını da etkilemektedir. Elektronik-elektronik sektörü cari dengenin sağlanmasında yüksek teknolojili ürün ihracatına ağırlık vermesi gereken Türkiye için de önemli bir sektördür. Son dönemlerde Türkiye’nin ihracatında ilk beş sektör içerisinde sürekli olarak yer almasına rağmen, Türkiye elektrik-elektronik sektörüyle ilgili literatürdeki çalışmaların sayısı oldukça azdır. Literatürde, sektörün rekabetçiliğini ürün haritalaması yöntemiyle ortaya koyan bir çalışma da bulunmamaktadır. Bu çalışmada, Türkiye elektrik-elektronik sektörünün rekabetçiliği, Balassa ve Vollrath tarafından geliştirilen endeksler kullanılarak 46 alt sektör itibariyle ortaya konulmuştur. Bunun yanında, Açıklanmış Simetrik Karşılaştırmalı Üstünlükler ve Ticaret Dengesi Endeksi değerleri hesaplanarak sektörün ürün haritalaması yapılmıştır. Endekslerin hesaplanmasında WITS (World Integrated Trade Solution) veri tabanından elde edilen 2012-2023 dönemi HS ürün sınıflandırmasına dayalı dış ticaret verileri kullanılmıştır. Yapılan hesaplamalar sonucunda, Türkiye’nin beş alt sektörde karşılaştırmalı üstünlüğe sahip net ihracatçı ve üç alt sektörde karşılaştırmalı üstünlüğe sahip net ithalatçı olduğu sonucuna ulaşılmıştır. Geriye kalan 38 alt sektörde ise Türkiye, karşılaştırmalı üstünlüğe sahip olmayan net ithalatçı konumundadır.
LOJİSTİK FİRMALARININ FİNANSAL PERFORMANSININ ELECTRE YÖNTEMİ İLE ANALİZİ
Authors: Aksu Cansu , Bayramoğlu Mehmet Fatih
Published: October 2024

Bu çalışma, Borsa İstanbul'da işlem gören lojistik firmalarının finansal performansını çok kriterli karar verme tekniklerinden biri olan ELECTRE III yöntemini kullanarak değerlendirmektedir. Çalışmanın temel amacı, lojistik sektöründe faaliyet gösteren firmaların çeşitli finansal göstergelerini ELECTRE III metodolojisi çerçevesinde analiz etmek ve bu firmalar arasında bir performans sıralaması yapmaktır. Literatür araştırmasına göre belirlenen sekiz orandan oluşan veri seti 2018-2020 yıllarına ait mali oranları içermektedir. Çalışmada kullanılan kriterler CRITIC metoduyla ağırlıklandırılmıştır. Çalışmada, XULAS endeksinde yer alan yedi lojistik firmasının performans sıralaması, firmaların 2021 ve 2022 yıllarındaki ROA, ROIC, ROCE ve FD/NS göstergeleriyle karşılaştırılmıştır. Bulgular, XULAS endeksindeki firmaların finansal performansını ortaya koyarak, bu firmaların değişen piyasa koşullarına nasıl tepki verdiklerini yansıtmaktadır. Çalışma sonucunda elde edilen sıralama, belirlenen test göstergeleri ile karşılaştırıldığında genel olarak uyumlu çıktığı görülmüştür. Ortaya çıkan farklılıklar, firmaların hizmet verdikleri alt sektörlerin ve pandemi döneminin firmaların performansları üzerinde etkisi olduğunu göstermektedir. Sonuç olarak; bu çalışma, lojistik sektöründeki finansal performans değerlendirme yöntemlerine metodolojik bir katkı sağlamakta ve sektördeki firmaların sürdürülebilir büyüme stratejilerini destekleme potansiyelini artırmaktadır.
Religious Unification, Regional Divergence: Exploring Multifaceted Linguistic Practices and Identities among the Israeli Druze and the Druze Community in the Golan Heights
Authors: Kheir Eve Afifa
Published: October 2024

This study delves into a comparative analysis of language and identity within two distinct Druze communities: those residing in the Golan Heights, who transitioned from Syrian to Israeli governance post the 1967 War, and their counterparts within Israel proper. Both communities find themselves situated as 'sandwiched' communities, with the Golan Druze caught between Israeli and Syrian nationalisms and the Israeli Druze positioned amid the dynamics of Israel and the Arabs. Given the fluid nature of collective identities, which are subject to continuous shaping by sociopolitical influences within and beyond state boundaries, this study focuses on two pivotal political debates in each community during the fieldwork period. The Israeli Druze community is primarily concerned with the Israeli-Nation State law controversy. Meanwhile, the Golan Heights Druze community is grappling with the intensifying and widely publicized speculation regarding secret negotiations between Assad's regime and Israel, which suggests that the Golan was sold to Israel rather than being a result of a 'lost war.' This study explores how these debates gradually shape the collective identities of the respective communities. The research illuminates how navigating between opposing forces leads to the emergence of novel national identities and linguistic variations within these 'sandwiched' contexts.
Prison inspectors of Western Siberia and organization of penitentiary department in the end of XIX – beginning of the XX century
Authors:   University of Tyumen, Andriyanova Dina V. , Pyrkh Viktoriya O. ,   University of Tyumen; Tyumen State Medical University
Published: October 2024

The purpose of the article consists in studying of a position of provincial prison inspector in the regional administrative apparatus and in researching of local prison inspection’s activity. Using microhistorical approach, structural-functional method and methods of retrospective and discourse analysis, the authors made an attempt to analyze the stages of the creation of the prison institution in Western Siberia and the scenarios of its transformation. The historical sources involved in the research including periodicals, sources of personal origin, documents of governmental agencies, archive materials and works of historians and publicists allow us to provide an overall pattern of provincial prison inspections’ functioning. A logical consequence of the creation of a central prison institute was the gradual formation of provincial prison departments. Due to a number of favorable factors, the prison inspection bodies (as part of the provincial governments) were formed in 1892 in the Tomsk Governorate. In other regions of Siberia, including the Tobolsk Governorate, these regulations became effective only in 1895. The prison departments were headed by provincial prison inspectors, who held a much higher position than another heads of departments. In this regard, they were almost on the same level as the vice-governor. The authors conclude that the inspection of prisons was sufficiently extensive, ranging from inspection of penitentiaries, detention houses and transit points, control of their sanitary conditions and technical equipment, to the staffing of prison schools, churches and libraries. The West Siberian prison inspections played an important role in the production and organization of convict labor, which served as an integral part of the penitentiary process of criminal forces. The philanthropic feelings were also not alien to prison officials – a lot of work was invested by the inspectors in the development of trusteeship and charitable institutions, maintaining corporate identity within the prison department, expanding official relations at the all-Russian and international level. These prison officers played a significant role in the systematization of penitentiary regulations. Despite the fact that the thesis of the need for the existence of the prison inspections was questioned in official circles, it still survived the onslaught of criticism, proving the expediency and effectiveness of its activities, developed its own scenarios for functioning during the period of revolutionary unrest and social transformations.
Review: Zuelow E. G. E. A History of modern tourism. United Kingdom: Macmillan Education UK, 2015. XII + 290 р.
Authors:   University of Tyumen, Nechiporuk Dmitry M. , Gorelko Anastasia V. ,   University of Tyumen
Published: October 2024

The historiography of modern tourism by the mid-2010s could not boast of the availability of fundamental comprehensive work, which had explored thoroughly this phenomenon on international scale. «A History of Modern Tourism» which was written by Eric Zuleow, an American professor of European and World History at the University of New England (Maine), is an ambitious attempt to examine the evolution of the formation of contemporary tourism formats over several centuries. Nevertheless, the idea to show a rise of global tourism is only partially implemented on the pages of the book. The reader, for the most part, deals with a Eurocentric view of the history of tourism. Some of the chapters, in particular focusing on the history of the 19th century, have an even narrower perspective. The author, first of all, focuses on the emergence of mass and popular tourism in Great Britain and the USA. The experience of Germany, Austria and Italy and other countries in that field has remained on the sidelines of the author's view. Meanwhile, a history of tourism in Russia has paid considerable attention in comparison with other European countries. Well aware of the limitations of his approach, Zuelow occasionally illustrates the history of the expansion of modern tourism with examples from a wide variety of countries, including non-European ones. Zuelow's main focus is on technological innovations and new business approaches that finally led to the creation of the mass tourism market. According to the author, a whole set of factors was important for the promotion of mass tourism: a new attitude to nature, the distribution of guide books among travelers, the improvement of trains and steamships in the second half of the XIX century. In the XX century, despite the global standards brought by the United States, tourism in many countries had its own specific. It depended, among others, on the type of political regime and cultural features of the country. In the second half of the 20th century, Western Europe managed to attract the attention of tourists from all over the world to its unique sights, while the USA turned into the main innovator of making the up-to-date leisure formats. The author managed to write a brief history of modern tourism, choosing the British Empire as a starting point. However, the vastness of the topic and the need to explore a variety of aspects of the history of modern tourism has resulted in uneven coverage of subject in some chapters as well as quite superficial study of mass tourism trends at the global level.
Comprehensive malnutritional index for predicting clinical outcomes in locally advanced rectal cancer receiving neoadjuvant chemoradiotherapy
Authors: Xu Yu , Shen Peipei , Zhu Jiahao , Qian Danqi , Gu Ke , Mao Yong , Ji Shengjun , Yang Bo , Zhao Yutian
Published: October 2024

The objective of this investigation was to assess the prognostic significance of the comprehensive malnutritional index (CNI) in patients with locally advanced rectal cancer (LARC) who underwent neoadjuvant chemoradiotherapy (nCRT) followed by surgery. A total of 240 LARC patients were recruited. The CNI was calculated using principal components analysis based on hemoglobin (Hb), total lymphocyte count (TLC), albumin (ALB), body mass index (BMI), and usual body weight percentage (UBW%). The patients were then categorized into two groups based on the median CNI value. Cox regression and survival analyses were performed. The CNI-low (120 cases) and CNI-high (120 cases) groups were classified based on the median CNI value. The results indicated that the CNI demonstrated superior predictive ability for disease-free survival (DFS) and overall survival (OS) compared to other malnutritional indexes. LARC patients in the CNI-high group had significantly longer DFS and OS compared to those in the CNI-low group. Multivariate analysis revealed that the CNI was an independent prognostic factor for DFS (hazard ratio [HR] = 0.49; 95% confidence interval [CI], 0.29–0.83; P = 0.008) and OS (HR = 0.30; 95% CI, 0.16–0.58; P < 0.001). Additionally, the CNI-high group benefited from postoperative chemotherapy (DFS: P = 0.029, OS: P = 0.024), while the CNI-low group did not show such benefits (DFS: P = 0.448, OS: P = 0.468). These findings suggest that the CNI could serve as a valuable prognostic indicator for LARC patients who undergo nCRT followed by surgery. Preoperative nutrition optimization is important for LARC patients.
Pembinaan dan Validasi Soal Selidik Faktor Sosiobudaya berkaitan COVID-19 dalam kalangan Orang Asli di Malaysia
Authors:   Department of Public Health Medicine, Faculty of Medicine, National University of Malaysia, Abu Bakar Siti Fairuz , Md Isa Zaleha ,   Department of Public Health Medicine, Faculty of Medicine, National University of Malaysia, Ibrahim Rozita ,   Pusat Pengajian Citra Universiti (School of Liberal Studies), National University of Malaysia, Ismail Aniza ,   Department of Public Health Medicine, Faculty of Medicine, National University of Malaysia, Daud Faiz ,   Department of Public Health Medicine, Faculty of Medicine, National University of Malaysia, Ibrahim Roszita ,   Department of Public Health Medicine, Faculty of Medicine, National University of Malaysia, Baharudin Ummi Mirza ,   Department of Public Health Medicine, Faculty of Medicine, National University of Malaysia
Published: October 2024

Pengenalan Soal selidik sebagai alat untuk mengukur faktor sosiobudaya berkaitan COVID-19 masih belum digunakan secara meluas oleh kebanyakan penyelidik. Di Malaysia, tiada soal selidik yang dibina dan disahkan untuk tujuan tersebut. Oleh itu, tujuan kajian ini adalah untuk membina dan mengesahkan soal selidik sebagai alat ujian yang baru bagi mengukur faktor sosiobudaya berkaitan COVID-19 dalam kalangan Orang Asli di Malaysia. Metodologi Kajian rintis ini melibatkan 30 orang penduduk Orang Asli di Pos Lenjang, Kuala Lipis, Pahang. Indeks Kesahan Kandungan (CVI) digunakan untuk menguji kesahan kandungan soal selidik, manakala kesahan konstruk dan kebolehpercayaan konsistensi dalaman soal selidik ditentukan menggunakan Exploratory factor analysis (EFA) dan Cronbach’s Alpha. Hasil Kajian Satu set soal selidik terdiri daripada empat konstruk telah dibina iaitu kepercayaan, amalan perubatan tradisional, adat dan budaya tradisional, dan sokongan sosial. Sebanyak 16 item telah dikekalkan di dalam EFA dengan nilai Cronbach’s Alpha setiap konstruk adalah 0.617, 0.778, 0.773 dan 0.779. Rumusan Soal selidik yang telah dibina ini berjaya divalidasi dan boleh digunakan untuk mengukur faktor sosiobudaya berkaitan COVID-19 dalam kalangan Orang Asli. Walau bagaimanapun, penambahbaikan masih perlu dilakukan dari masa ke semasa untuk memastikan soal selidik ini relevan terutamanya jika ia digunakan ke atas populasi atau dari negara yang berbeza dari Malaysia, dengan mengambil kira juga penyakit yang berbeza. Kata Kunci Sosiobudaya - COVID-19 - Orang Asli - kepercayaan - perubatan tradisional – adat budaya tradisional – sokongan sosial.
The Image of the German Soldier and the Image of the Enemy in Graphic Works of Arthur Kampf (1914–1917)
Authors:   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Kizyma Yuliia
Published: October 2024

The important role which visual media play in modern armed conflicts calls for studying the subject in its historical context. This article examines the construction of the image of the German soldier and that of the enemy during WWI through the example of graphic works by Arthur Kampf – one of the most prominent academic artists of the Wilhelmine period and an «official war artist». Contemporaneous printmaking techniques allowed for the creation and dissemination of a large number of artworks which represented various aspects of wartime experience, as well as reflecting changes in official propaganda and public sentiment. For that reason graphic works from WWI merit special attention on the part of scholars. The source materials include separate prints, reproductions of the artist’s other graphic works in the press, and his illustrations to the collection of sermons «Ein feste Burg» («A Strong Fortress»). The study draws on the concepts used in different fields of contemporary humanities (representation, substitution, image of the enemy) and methods of art history proposed by Erwin Panofsky. The author demonstrates that the subject works reflect the moral ideal of the German soldier rather than the actual experience of the participants in WWI. In Kampf’s pieces from 1914 German soldiers appear as physically and mentally strong superheroes. During and after his trip to the frontline in the winter and spring of 1915, the artist focused on creating individualised portraits of combatants, along with depicting the hardships of their daily life and the pain of being separated from their families. Although the pieces from this period are arguably more realistic, the artist overlooked the immediate experience of industrialised warfare or its traumatic impact on soldiers’ physical and mental health. Kampf represented the enemy as a complete opposite of the German soldier, an embodiment of unrestrained aggression and unprovoked violence. Due to their allegorical nature and references to established iconographic traditions the works depicting the enemy transcend the historical situation in which they were created. Kampf’s pieces reflect the major trends in the representation of WWI in German visual culture over the course of the conflict. Constantly appearing in visual media, such images – emotionally-charged and often devoid of internal contradictions – possessed an ability to shape the recipients’ perception of the nature and objectives of the war, which was portrayed as a clash of cultures. To some extent they were able to replace the first-hand traumatic experience of the combatants and their relatives.
Creative Path of the Ukrainian Historian: to the Anniversary of Professor Volodymyr Kucher
Authors:   Institute of the History of Agrarian Science, Education and Techniques of NSAL of NAAS, Shchebetiuk Nataliia
Published: October 2024

The article highlights the life path of Volodymyr Ivanovych Kucher, doctor of historical sciences, professor, chief researcher of the science sector of the Institute of History of Agrarian Science, Education and Technology of the National Scientific Agricultural Library of the National Academy of Sciences of the National Academy of Sciences in connection with the celebration of his 85th anniversary. The directions of the scientist’s research searches at various stages of scientific growth are revealed, among which the problems of the Second World War and Ukraine’s participation in it stand out, as such, which remains a through-and-through topic of fundamental research throughout his life. Interest in the new paradigm of ethno-national development, modeling of the optimal options for the ethno-politics of our state became no less productive; the question of the unity of Ukrainian lands, national liberation struggles. The significant contribution of the scientist to the creation of a source-based database for the study of the history of the development of agricultural research in Ukraine was noted.
Historical Excursions of Male Gymnasium Students in Kyiv in the Modern Era
Authors:   PHEI «Kyiv Medical University», Kalinin Igor
Published: October 2024

The article uses archival and special historical literature to study the development of historical excursions of gymnasium students of Kyiv men’s gymnasiums in the early twentieth century in the context of their everyday life. The study is based on the principles of historicism, scientificity and authorial objectivity, as well as on the use of general scientific (analysis, synthesis, generalisation, comparison) and special historical (historical-typological, historical-systemic) methods. In order to deepen and improve school education, the microhistorical method can also be distinguished. The historical experience of using means in school practice aimed at improving the individual through upbringing and education is gaining relevance in connection with the transformation of the values and ideals of postmodern society. In Ukraine, the modern era was marked by major changes in the socio-economic and cultural spheres. It was at this time that the excursion business received a new impetus for its development. The article highlights the process of formation of state regulation of student tourism in the Russian Empire in the late imperial period. The task is to study the plans, routes, directions, means of organising and implementing historical gymnasium excursions in Kyiv. It has been found that the scientific interest in gymnasium excursion activity aroused among researchers at the beginning of its inception, namely in the late nineteenth and early twentieth centuries, in particular in the works of S. Rusova, N. Akinfeev, I. Arepiev, N. Bazhenov, I. Greaves and V. Bitner. However, their works covered only excursion activities around the empire. In the Soviet period, R. Diakova, Y. Rukhlov, L. Logvinov, V. Sychynavi, H. Dolzhenko, B. Emelianov, and others studied the subject of excursions. But their works were mostly of an all-Union nature. Among the recent research studies, it is worth noting the works of Y. Narovlyansky, H. Usykin, S. Hrybanova, N. Savchuk and V. Verbytsky. The author has found that none of the researchers has specifically studied the excursion activities of male gymnasium students in Kyiv. Kyiv to the historical sites of Kyiv in the modern era. The author focuses on the informative and analytical material of archival data and scientific achievements of researchers of different generations. It is concluded that the scientific heritage of researchers who reveal the general aspects of excursion business is quite extensive. At the same time, today there are still many little-known and under-researched aspects of this multifaceted issue, namely historical excursions in Kyiv, gymnasiums of men’s gymnasiums in Kyiv in the early twentieth century. The author hopes that the published information will contribute to the intensification of the search for new documents that will help shed light on both the little-known pages of the history of education in Kyiv men’s gymnasiums and the modern history of Kyiv and Ukraine.
FLOW PATTERN PREDICTION IN HORIZONTAL AND INCLINED PIPES USING TREE-BASED AUTOMATED MACHINE LEARNING
Authors: Uthayasuriyan Agash , Duru Ugochukwu Ilozurike , Nwachukwu Angela , Shunmugasundaram Thangavelu , Gurusamy Jeyakumar
Published: October 2024

In the oil and gas industry, understanding two-phase (gas-liquid) flow is pivotal, as it directly influences equipment design, quality control, and operational efficiency. Flow pattern determination is thus fundamental to industrial engineering and management. This study utilizes the Tree-based Pipeline Optimization Tool (TPOT), an Automated Machine Learning (AutoML) framework that employs genetic programming, in obtaining the best machine learning model for a provided dataset. This paper presents the design of flow pattern prediction models using the TPOT. The TPOT was applied to predict flow patterns in 2.5 cm and 5.1 cm diameter pipes, using datasets from existing literature. The datasets went through handling of imbalanced data, standardization, and one-hot encoding as data preparation techniques before being fed into TPOT. The models designed for the 2.5 cm and 5.1 cm datasets were named as FPTL_TPOT_2.5 and FPTL_TPOT_5.1, respectively. A comparative analysis of these models alongside other standard supervised machine learning models and similar state-of-the-art similar two-phase flow prediction models was carried out and the insights on the performance of these TPOT designed models were discussed. The results demonstrated that models designed with TPOT achieve remarkable accuracy, scoring 97.66% and 98.09%, for the 2.5 cm and 5.1 cm datasets respectively. Furthermore, the FPTL_TPOT_2.5 and FPTL_TPOT_5.1 models outperformed other counterpart machine learning models in terms of performance, underscoring TPOT’s effectiveness in designing machine learning models for flow pattern prediction. The findings of this research carry significant implications for enhancing efficiency and optimizing industrial processes in the oil and gas sector.
PRESSURE BUILD-UP TEST ANALYSES OF A HYDRAULICALLY FRACTURED WELL WITH REDUCED HALF-LENGTH
Authors: Koščak Kolin Sonja , Valjak Andrea , Brkić Vladislav , Buti Njie Sonja
Published: October 2024

When the oil production of the hydraulically fractured well A-1 began to decline, a refracturing of the well was planned, as a reduction in the fracture size was assumed after a long production period. Several possibilities of the pressure build-up test analyses were performed to determine the best evaluation of the reduced fracture half-length. Although the objectives of these tests are to determine the reservoir properties, such as rock permeability and skin factor, as well as fracture conductivity, the Saphir programme is also used to model the fracture half-length. This is the most important parameter required for the design of the new fracturing process and for the creation of a new production model. For this purpose, the methods of the pressure build-up test analysis are first described theoretically. Based on different analyses of the same pressure build-up test, the one that best matches the analytical model of a fractured well with the measured pressure curve and the derivative curve is selected. It is found that the most accurate result for fracture half-length is obtained from the fractured well model with multiphase flow.
SELECTION OF THE OPTIMAL TECHNOLOGY TO PREVENT SAND PRODUCTION, TAKING INTO ACCOUNT ROCK DECONSOLIDATION IN THE BOTTOMHOLE FORMATION ZONE
Authors: Churikova Larisa , Akhmetzhan Samal , Gumarov Gali , Mukambetkaliyeva Ainash , Gubaidullin Kumiskali
Published: October 2024

This article presents studies on the selection of the best sand control option, technologically based on the application of the method of fixing the bottomhole part of the well system with polymerized proppant, which will prevent the destruction of the formation zone of the wells and facilitate the development of the Kumkol field in the future. During the development of the Kumkol field, the main and most complicating factor in the operation of wells is sand production, leading to long downtime and repairs. The aim of the study is to scientifically substantiate and improve the technological methods of fixing the bottomhole zone of the well system to exclude or limit sand production with the well production of the Kumkol field, taking into account the current state of the reservoir rocks. The work applied a set of research methods, including: analysis of the experience of combating sand ingress at the Kumkol field; the use of the theoretical foundations of the relationship between the methods of anti-sand filtration and the properties of reservoir rocks; mathematical experiments on the constructed geological and mathematical model of the current state of the rocks of the decompacted zone. The scientific novelty of the work lies in the establishment of patterns that relate the impact of the destruction of reservoir rocks with a weakly cemented property in a production well on the degree of formation of deconsolidation zones at the bottom of wells that reveal a weakly cemented rock formation.
Novel Piperidone Hydrazine Carbodithioate Derivative: Synthesis, In Silico Drug-Likeness Analysis and Anticancer Properties
Authors: Selvam Dr. Athavan Alias Anand
Published: October 2024

An efficient synthesis of a novel compound of hydrazine carbodithioate derivative of piperidone, (E)-methyl-2-(3-methyl-2,6-diphenylpiperidin-4-ylidene)hydrazinecarbodithioate (1), was performed using methyl dithiocarbazinate and 3-methyl-2,6-diphenylpiperidin-4-one as the starting materials. The reaction was carried out in an acidic medium using methanol as a solvent. The novel compound was characterized by FTIR, Mass, and NMR spectral techniques. The hydrazine carbodithioate derivative (1) was then tested for its anticancer activity against the liver cancer cell line, Hep G2, using the MTT assay. The IC50 values of the newly synthesized compound were found to be 34.33 ± 0.79 µM (24 hours) and 27.64 ± 1.42 µM (48 hours). The in vitro antitumor studies demonstrated that the novel compound (1) exhibited good inhibitory activity against the Hep G2 cancer cells. Furthermore, in silico properties such as lipophilicity, water solubility, pharmacokinetic properties, drug likeness, and medicinal chemistry were analyzed using the SwissADME tool.
A case report of a mild neurologic deficit with extensive poststroke damage to the subdominant brain hemisphere: analysis of data obtained from magnetic resonance tractography, functional magnetic resonance imaging, and electroencephalography
Authors: Gumin Ivan S. , Gulyaev Sergey A. , Beregov Mikhail M. , Lelyuk Vladimir G.
Published: October 2024

The severity of damage to different brain areas, including the cortex, can vary significantly in the associated neurologic deficit and reduction in the quality of life, often regardless of the lesion volume. The localization of the abnormalities plays a large part. Lesions of the dominant and subdominant hemispheres can differ greatly in both clinical features and effects on the patient’s quality of life. In this case report, a patient admitted for rehabilitation after two ischemic strokes underwent neurological and neuropsychological examination, complex instrumental diagnostics using electroencephalography, magnetic resonance imaging, computed tomography perfusion, magnetic resonance tractography, and functional magnetic resonance imaging. The patient had minimal left-sided hemiparesis, impaired regulation of voluntary activity, mild decrease in neurodynamic indicators, mildly impaired concentration, and a critical view of his condition. Neuroimaging findings demonstrated extensive postinfarction damage to the right subdominant hemisphere of the brain in the middle cerebral artery circulation. A nonconformity between the brain damage volume and the severity of its clinical signs was observed. Based on functional examination data, the dominant hemisphere was determined, and restructuring the functional centers was suggested. This clinical case was compared with similar ones, and their relationship with the data was analyzed. Information that expands the knowledge of the topography of the altered zones involved in motor and speech functions and the ability to perform arithmetic counting was obtained.
Numerical Tests to Evaluate the Effect of Constraining the Spectral Shape of Reference Events on Source Parameter Scaling
Authors: Bindi Dino , Mayeda Kevin , Spallarossa Daniele , Picozzi Matteo , Oth Adrien , Morasca Paola , Walter William R.
Published: October 2024

Extracting source parameters from recorded spectra requires correction for attenuation effects. In consideration of the trade-off between source and propagation effects, various strategies have been proposed to constrain the inverse problem with a priori assumptions. The objective of this study is to assess the impact of constraining the source spectra of reference earthquakes in an attempt to remove a common unknown term from the spectral decomposition results. We perform numerical analyses to simulate the outcomes of the decomposition by generating source spectra for different stress drop versus seismic moment scaling, considering a large population of earthquakes with moment magnitudes between 1.8 and 6.5. Following the strategy of constraining the corner frequency of reference events, we evaluate the error of the retrieved source parameters when the applied constraint shows different levels of discrepancy with respect to the assumption used to generate the synthetics. The numerical tests show that an assumption that differs from the correct one can introduce a magnitude-dependent bias that could alter the scaling of the corner frequency with earthquake size. Furthermore, the source spectral shape for large events is also influenced by the constraints applied to the reference earthquakes. As a consequence, inferences about the self-similarity of the rupture process across the scales, or the selection of the most appropriate source model based on the goodness of the spectral fit, may be strongly biased by the constraint imposed on the reference earthquakes.
La protección social de las personas dependientes en Portugal
Authors: de Barros Mario Silveiro
Published: October 2024

En Portugal, la protección social de las personas dependientes es pura apariencia o trompe l’oeil, tanto si se analiza la supuesta reforma del tema operada por el Decreto-ley 265/99, como si solo se tiene en cuenta la efectuada por el Decreto-ley 101/2006. El propio Gobierno portugués ha reconocido, muy recientemente, la necesidad de poner al día el ordenamiento portugués de seguridad social en materia de dependencia, mediante la aprobación de la Resolución del Consejo de Ministros núm. 63/2015. En tanto dicha puesta al día no se haga realidad, la necesidad de otorgar protección social integral a las personas dependientes seguirá siendo un problema precisado de solución acuciante, dada la ratio de personas mayores actualmente existente en Portugal.
La legitimación en el proceso de impugnación del despido colectivo del art. 124 LRJS
Authors:   Universidad de Murcia, Cavas Martínez Faustino
Published: October 2024

La regulación de la legitimación, activa y pasiva, en el art. 124 LRJS es una materia bastante compleja, toda vez que dicho precepto no solo regula la acción ordinaria de impugnación del despido colectivo y la acción de reconocimiento de la procedencia del despido a petición de la empresa, sino también, en su último apartado, el proceso de impugnación de las extinciones derivadas del despido colectivo, sin olvidar la posibilidad que tiene la autoridad laboral de impugnar el acuerdo alcanzado durante el periodo de consultas. En este trabajo se aborda el análisis de los diversos sujetos legitimados en las distintas vías de impugnación judicial que pueden sustanciarse para combatir el despido colectivo, con especial atención a la doctrina jurisprudencial recaída sobre la materia.
El cese en la prestación de servicios para la Administración pública: Diferencias y similitudes entre la jurisdicción social y la contencioso–administrativa
Authors:   Universidad de Murcia, Selma Penalva Alejandra
Published: October 2024

En los últimos tiempos asistimos a una cada vez más generalizada aplicación de lo que se viene conociendo como “criterio Diego Porras” a múltiples tipos de relaciones laborales de naturaleza temporal, independientemente de la naturaleza pública o privada del empleador. En particular, puede decirse que ya existe una tendencia uniforme de nuestros jueces y tribunales a reconocer una indemnización de 20 días de salario por año trabajado en los casos de extinción de un contrato de trabajo en régimen de interinidad, bien por cobertura definitiva de la plaza que se ocupaba, bien por reincorporación de la persona a la que, circunstancialmente, se estaba sustituyendo. Pero la interpretación que se está convirtiendo en dominante en el ámbito de la jurisdicción social, no siempre rige ante la jurisdicción contencioso–administrativa. En particular este trabajo se dedica a analizar la figura del funcionario interino y las consecuencias indemnizatorias derivadas de su cese.
Development of Education Accounting Information System
Authors: Permatasari Carolina Lita , Luhsasi Dwi Iga , Salsabila Shafira Salwa
Published: October 2024

The purpose of this research is to develop an education accounting information system and determine the feasibility of using an education accounting information system. This research and development used the ADDIE model. The partner in this research was the OSF Semarang Education Commission Institution. Data collection techniques were carried out using questionnaires, interviews, observations, and documentation. The feasibility results obtained for this education accounting information system include: validation by material experts obtained an assessment of 3.94 with the category ‘Feasible’, validation by media experts obtained an assessment of 4.76 with the category ‘Very Feasible’, and validation by users obtained an assessment of 4.54 with the category ‘Very Feasible’. Based on the validation results, it can be concluded that the education accounting information system is very feasible to be implemented at the OSF Semarang Education Commission Institution so that it can facilitate the work of the Institution Management and College Management in preparing financial reports. The implications of this research include improving the efficiency and accuracy of institutional financial management through technology, providing guidelines for transparency and accountability, and improving the quality of education and public trust in budget management.
Exploring Integrated Governance to Stimulate Sustainable Performance of Village-Owned Enterprises
Authors: Sari Niki Puspita , Muhammad Helmi , Imron Muhammad , Azwar Anas Muhammad Yusuf , Sutomo Sutomo , Assiddiq Dafis Ubaidillah , Jannah Urnika Mudhifatul
Published: October 2024

Good governance integration may assist Village-Owned Enterprises (BUMDes) in achieving sustainable performance. This study focused on the adoption of governance principles and their impact on sustainable performance at BUMDes Mutiara Welirang in Mojokerto, East Java, Indonesia. This study used an exploratory descriptive qualitative approach using a single case to explore the phenomenon in depth. Data collecting methods include structured interviews, field observations, focus group discussions, and document studies. The method of determining informants is divided into two stages: purposive sampling to identify important informants based on specific criteria and snowball sampling for supporting informants. Data were processed using thematic analysis to identify, analyze, and report on interview findings. The study's findings show that BUMDes Mutiara Welirang's governance procedures incorporate cooperative, participatory, emancipatory, transparent, accountable, and sustainable principles. The integration of BUMDes governance serves as the foundation for achieving sustainable performance in not only economic but also social, environmental, and cultural dimensions. This study's implications include improving the welfare of multiple stakeholders in financial, social, environmental, and organizational cultural dimensions. This study also provides theoretical benefits, such as serving as a role model for BUMDes governance in Indonesia to achieve sustainable performance.
Desempenho do Concreto com Pó de Vidro e Aditivo Plastificante
Authors: Carvalho dos Santos Dellane Stephani , Da Silva Sampaio Jullie Anne
Published: October 2024

O estudo avaliou a substituição parcial do cimento Portland CP IV – 32 RS por pó de vidro lapidado, com aditivo plastificante, visando reduzir emissões de CO₂ e melhorar a resistência do concreto. Foram testados blocos com 0%, 3%, 5% e 7% de substituição por pó de vidro, apresentando resistências médias de 24,87 MPa, 28,64 MPa, 30,23 MPa e 32,23 MPa, respectivamente. Os resultados indicaram aumentos de resistência de 15%, 21,4% e 29,5% para as substituições de 3%, 5% e 7%, superando as expectativas. Conclui-se que essa substituição é viável e sustentável, melhorando a resistência do concreto e reduzindo seu impacto ambiental.
In silico investigation of therapeutic potential of phytosteroids against SARS-CoV2 infection via inhibition of viral multiplication and attenuation of host cytokine storm
Authors: Velan Athithan
Published: October 2024

SARS-CoV2 infection overcomes host cell membrane barrier, followed by utilization of host cellular processes for viral multiplication. Simultaneously, it triggers a cytokine storm within and around infected cells and tissues. Anti-inflammatory agents that can potentially inhibit viral penetration and multiplication within the host cells may be ideal drug candidates against COVID-19. Dietary phytosteroids have significant anti-inflammatory potential. Hence, the present study intends to investigate anti-viral potential of three dietary phytosteroids, namely, brassinolide, 28-homocastasterone and 24-epibrassinolide against SARS-CoV2 proteins, S1 spike protein, nucleocapsid protein and main protease enzyme, in addition to host pro-inflammatory proteins, interleukin-1, tumour necrosis factor-α, cyclooxygenase-2 and prostaglandin synthase, as drug targets. Molecular docking studies by AutoDock version 4.0 was performed. Brassinolide, 28-homocastasterone and 24-epibrassinolide exhibits high docking score against all the seven proteins, as compared to hydroxychloroquine. Brassinolide and 28- homocastasterone has maximum binding affinity for pro-inflammatory proteins and SARS-CoV2 proteins.Dietary phytosteroids may potentially attenuate cytokine storm with simultaneous inhibition of host entry and multiplication of SARS-CoV2. In-vitro and in-vivo anti-viral studies of plant steroids may provide a clear path for the identification and development of novel drug candidates against COVID-19, that also provides evidence for the concept of reverse pharmacognosy.
Infrastructures Imprint: Metro Proximity and Property Development Dynamics in São Paulo, Brazil
Authors: Grimaldi Daniel , Mitnik Oscar A. , Zimmermann Beatrice Aline
Published: October 2024

How does the proximity to a metro station affect urban development in Latin America? While the literature assessing the causal impacts of transportation infrastructure has grown in recent years, only a few papers have focused on the effects of metro systems in the Latin America and the Caribbean region, and identifying the precise impacts of such investments is far from straightforward. We apply a Synthetic Difference-in-Differences (SDiD) approach to estimate the effects of the expansion of Line 5 of the São Paulo metro system in Brazil on land use and property features. Our results show positive impacts on constructed area, with a treatment effect that is half the magnitude of the average constructed area in untreated units in the pre-treatment period. Additionally, our findings indicate an increase in the number of properties around the stations, with a shift in property composition towards more commercial units. We also find a strong anticipation effect associated with the new metro infrastructure and dynamic impacts after the opening of the first metro station, with effects that increase over time.
Cadenas de valor de energías renovables y almacenamiento de energía en América Latina y el Caribe
Authors: Parés Olguín Francisco , Busch Pablo
Published: October 2024

Este documento hace un análisis crítico respecto al rol de América Latina y el Caribe (ALC) en la transición energética global y presenta recomendaciones para aprovechar la oportunidad de desarrollo que existe. El documento aborda cada una de las cinco etapas de la cadena de valor, enfocándose en tres tecnologías clave: paneles solares, turbinas eólicas y baterías de litio. Para cada etapa de valor se definen oportunidades, desafíos y recomendaciones para ALC, enfocándose en particular en Argentina, Bolivia, Brasil, Chile, Colombia, Ecuador, Jamaica, México, Panamá, Perú y Venezuela; dado que estos países son los que tienen importantes reservas de minerales, industrias mineras o industria más avanzada que podría participar en etapas de manufactura de la cadena de valor. El documento está basado en 4 reportes recientes elaborados por el BID, donde se da cuenta del esfuerzo y trabajo realizado por el banco por impulsar y promover el desarrollo de ALC en esta área. Los principales mensajes del documento se resumen así: (1) La transición energética global presenta una oportunidad económica importante para el desarrollo de ALC, a la vez que la producción de estas tecnologías contribuye a la lucha global contra el cambio climático. (2) ALC tiene una ventaja única al concentrar la mayoría de los minerales críticos a nivel mundial, y además por su posición competitiva en costos de extracción y para capturar mayores beneficios en la cadena de valor debe explotar y expandir sus ventajas comparativas: reservas de minerales, mano de obra calificada, posicionamiento estratégico como aliado comercial de Estados Unidos y Europa, y acceso a infraestructura portuaria para exportaciones. (3) La extracción minera requiere lograr y mantener una licencia social para operar, por lo que la industria necesita ir más allá de las legislaciones nacionales en temas ambientales y sociales. (4) Las alianzas estratégicas entre países de la región son clave para competir globalmente en etapas más complejas de la cadena de valor. (5) Para el fin de vida de tecnologias de energía limpia, la ausencia de un marco regulatorio integral genera deficiencias en la valorización del recurso, falta de inversión privada, e incentiva la informalidad.