bluuebunny/crossref_metadata_2025 huggingface dataset:
EN Thermodynamic analyses of heat exchangers in cryogenic systems
Authors: Троценко О.В.
Published: April 2023

The problems of thermodynamic analysis associated with the heat exchangers that used in cryogenic technology are discussed. Heat exchangers of high and medium pressure air separation and fluidizing plants operating at different temperature levels were selected for modelling. There are many features according to which the classification of heat exchangers is made. These features include such facts as the number of flows of the working fluid, the relative direction of the flows of working substances, the purpose of the apparatus, and others. These features are also associated with the design of heat exchangers and the software for the design, which contains thermodynamic calculations. The general thermodynamic approach is based on the equation for the values of the thermodynamic efficiency characteristics and the restrictions imposed on them At the exergy method of analysis, the corresponding balance is based on the energy balance equation. On the basis of this balance, the losses from irreversibility of the selected object and its exergy (thermodynamic) efficiency can be directly determined In a heat exchanger, both types of losses exist, but it is not possible to reveal the contribution of each type to total losses using only the exergy balance. This is due to the fact that this balance is drawn up for a closed control surface that reflects a physical object and not logical reasons associated with this object. Meanwhile, the determination of technical losses is an urgent tasks since the change in the thermodynamic parameters that regulate these losses are the basis for increasing the coefficient of the thermodynamic efficiency of the analyzed system A method and an algorithm for calculating the components of losses from irreversibility in these heat exchangers are proposed. The exergy method of thermodynamic analysis was used to calculate the components of these losses for some two-flow heat exchangers. The investigation of the obtained calculation results is presented
Avaliação no longo prazo de pacientes submetidos à Cirurgia Bariátrica com IMC = 50kg/m2
Authors: MEIRA MATHEUS DUARTE , OLIVEIRA FERNANDO DE SANTA CRUZ , COUTINHO LUCAS RIBEIRO , LEÃO LUÍS HENRIQUE DE ALBUQUERQUE , VASCONCELOS GÉSSICA DE PAULA , SIQUEIRA LUCIANA TEIXEIRA DE , FERRAZ ÁLVARO ANTÔNIO BANDEIRA
Published: April 2023

RESUMO Objetivo: determinar os riscos e benefícios da cirurgia bariátrica em pacientes com superobesidade em comparação com obesidade graus II e III. Métodos: coorte retrospectiva que incluiu um grupo Estudo com 178 pacientes portadores de superobesidade e um controle com 181 pacientes com IMC 35-49.9Kg/m2. Os grupos foram formados numa razão 1:1 com pareamento “vizinho próximo”. As principais variáveis foram comorbidades e IMC pré e pós-operatório, ocorrência de complicações pós-operatórias severas, obstrução intestinal, úlcera marginal, fístula e morte em 30 dias, além da necessidade de idas à emergência e realização de tomografia computadorizada (CT) para investigação de abdome agudo. Resultados: o grupo Estudo foi composto por 74.0% de mulheres, enquanto o Controle teve apenas 56.7%. O tempo médio de seguimento foi similar em ambos os grupos (5.48 x 6.09 anos, p=0.216). Não houve diferença estatisticamente significativa em relação à prevalência de diabetes entre os grupos nem entre a técnica cirúrgica empregada. Todos os óbitos ocorreram no grupo Estudo (IMC = 50kg/m2), com apenas pacientes submetidos ao BGYR. Não houve diferença significativa entre os grupos em relação à ocorrência de complicações pós-operatórias. Ao avaliar idas à emergência e necessidade de TC para investigar dor abdominal, também não foi observada difrença significativa entre os grupos. Conclusão: apesar do alto risco cirúrgico implicado em pacientes portadores de superobesidade, os benefícios relacionados à remissão de comorbidades ainda são significativos; contudo os resultados parecem ser inferiores aos pacientes com graus mais leves de obesidade.
Yang Naimei - life practice of a chinese “flapper” of women’s development in China
Authors: Xu Yanrui , Wang Junwei
Published: April 2023

Abstract: As one of the earliest movie stars in China, Yang Naimei’s life reflects the process of professionalization and modernization of Chinese women in the early 20th century. This study discusses the life practices and significance of Yang Naimei as a Chinese flapper. Flapper refers to the modern girl who arose in Europe and America in the 1920s as a challenge to traditional lifestyles. Yang Naimei fully embodied the characters of the flapper. She often played an unruly woman on the screen, and she had many relationships in her life, accumulating wealth and a reputation with her acting career. However, society at that time did not provide enough space for the sustainable development of the women’s generation, like Yang Naimei, in economic, political and personal life. After the loss of her youth, she was disposed of by the film industry and suffered from poverty and disease in the latter half of her life. Taking Yang Naimei as an illustration of the times can reflect the twists and turns in the treatment of Chinese women offered by the society.
The relationship between the debate on the monetary system during the Eastern Jin and Southern Dynasties and East Zhejiang economic region
Authors: Yang Yi , Tong Jie , Chan Zhou
Published: April 2023

Abstract: Not only the indigenous aristocratic families but also northern immigrant families living in east Zhejiang were involved in the debates on monetary theory and policy thought in the Eastern Jin and Southern Dynasties. The debates were often focused on the commodity prices and forced labor in east Zhejiang. This special historical phenomenon reflects two questions. On the one hand, the chaos caused by the war in the north and scholar families migrating southward greatly promoted the development of southern China, which made the five counties in east Zhejiang the most important and active areas of economy. On the other hand, it reflects the relationship changes between immigrants and indigenous gentries. Namely, the indigenous aristocratic families and northern immigrant families cooperated in economy so as to enhance the prosperity and development of the east Zhejiang region. Later, with the rise of “common people (寒人)”, the scholars’ economic status was increasingly impacted, which resulted in the gentries’ anxiety and crisis consciousness.
Avaliação por microscopia eletrônica e de força atômica para análise do comportamento abrasivo de compósitos com carbeto de silício
Authors: Estolano Amanda Marques Lopes , Oliveira Petrus d’Amorim Santa Cruz , Silva Flávio José da , Cruz Felipe Mendes da , Santos Tiago Felipe de Abreu , Lima Nathalia Bezerra de
Published: April 2023

RESUMO A pasta de cimento é a parte do compósito cimentício que possui baixa resistência ao atrito e suas propriedades mecânicas e microestruturais são determinantes para a durabilidade do material. As técnicas de microscopia são comumente utilizadas para elucidar esses comportamentos mecânicos, físicos e químicos de compósitos cimentícios. O objetivo deste trabalho foi elucidar a importância de técnicas de microscopia para avaliação direta do comportamento abrasivo de pastas de cimento com micropartículas de carbeto de silício (SiC). A metodologia do trabalho consistiu na fabricação das amostras de pastas cimentícias de referência e com 10% de adição de SiC, análise das propriedades mecânicas compressivas e abrasivas, além de ensaios de Microscopia Eletrônica de Varredura (MEV) e Microscopia de Força Atômica (MFA). Os resultados mostraram que a intensificação das propriedades mecânicas com adição de micropartículas de SiC podem ser relacionados com as micrografias obtidas no MEV, através do acentuado preenchimento dos poros, e por meio da atenuada rugosidade superficial identificada no MFA. Concluiu-se que os resultados de rugosidade e porosidade, adquiridos pelas técnicas de MEV e MFA, podem fornecer informações relevantes para análise da durabilidade de materiais cimentícios.
Comparative evaluation of plant extract effects on peritoneal, medullary and J774 cells. G8 macrophages
Authors: Marques-Santos F. , Amendoeira M. R. R. , Galvão R. M. S. , Rocha L. M. , Faria R. X.
Published: April 2023

Abstract The use of medicinal plants as raw material for extracts production and pure substances isolation and subsequence development of new drugs represents a constantly growing area. However, some stages are indispensable before pharmacologically evaluating natural products such as medicines. Toxicity tests in mammalian cells are essential to initiate new drugs development or verify the substance’s biocompatibility. Thus, we verified the toxicity of crude extracts and fractions with different polarities obtained from the leaves and stems of eight plant species. The toxic effect was evaluated on macrophages obtained from the bone marrow and peritoneal cavity of a Swiss webster mouse and J774 macrophages. G8 cell lineage. These macrophages were cultured in a 96-well plate, and the compounds were added at a concentration of 100 µg/mL for 24 hours. After this time, the supernatant was removed. The toxicity was evaluated for lactate dehydrogenase (LDH) release assay and the resazurin assay, which uses an indicator dye to measure oxidation-reduction reactions. The results showed a difference in the percentage of toxicity when comparing the same extract in different types of macrophages. This outcome indicates that these cells from different origins may exhibit different responses when exposed to the same natural compounds.
Isolation and characterization of synthetic pyrethroids-degrading bacterial strains from agricultural soil
Authors: Uzma B. , Ali F. , Qureshi N. A. , Shakeela Q. , Asima B. , Ahmed S. , Hayat A. , Rehman M. U.
Published: April 2023

Abstract Pyrethroid pesticides are commonly used for pest control in agriculture setup, veterinary and home garden. They are now posing increased risks to non-targeted organisms associated to human beings due to their considerable use. The present work deals with the isolation of bacteria with tolerance to high concentrations of bifenthrin and cypermethrin from contaminated soil. Enrichment culture technique (bifenthrin concentration = 50-800 mg/L) was used for bacterial isolation. Bacteria that showed growth on minimal media with bifenthrin were also sub-cultured on minimal media with cypermethrin. Bacteria showing luxurious growth on both the pyrethroid, were screened out based on their morphological, biochemical parameters and by API 20NE Kit. Phylogenetic studies revealed that, one bacterial isolate (MG04) belonging to Acinetobacter lwoffii and other five bacterial isolates (MG06, MG05, MG01, MG03 and MG02) cluster with Pseudomonas aeruginosa, Pseudomonas putida respectively. Isolated members of genera Pseudomonas and Acinetobacter could be used for further detailed degradation studies by using FTIR, HPLC-MS or GC-MS analysis.
Interpopulation characterization of quinoa (Chenopodium quinoa Willd.) from different agroecological environments of Colombia
Authors: Morillo Coronado A. C. , Castro M. A. , Manjarres Hernandez E. H.
Published: April 2023

Abstract Chenopodium quinoa Willd. it is an Andean cereal of great importance for human consumption due to its high nutritional value. In Colombia there is a high phenotypic and genotypic variability within quinoa crops, which has not been studied and has been maintained by the same farmers cycle after production cycle. The objective of this study was to carry out an interpopulation characterization of quinoa cultivated in different producing municipalities of the department of Boyacá, in Colombia, for which 19 morphological descriptors were used, which were evaluated in situ in nine municipalities and analyzed through descriptive statistics, principal component analysis, correlation and conglomerates. In the evaluation of the quantitative traits for all the populations, it was observed that the most variable descriptors were Number of teeth lower leaf (DHI), Lower leaf length (LHI), Width upper leaf (AHI) and Number of teeth upper leaf (DHS). Great segregation between and within individuals of Blanca de Jericó and Piartal was observed for panicle and leaf color and shape, stem color, presence of teeth, and axils on upper and lower leaves. A classification key is proposed that allows in the field to be able to morphologically differentiate the genotypes of Piartal and Blanca de Jericó. This research shows that among the most cultivated genotypes in the department of Boyacá, there is still an important phenotypic diversity given at the inter and intra-individual level, due to the phenological state and the agroclimatological conditions of the different producing regions.
Controlling fast-track construction method variables (time, cost and quality)
Authors: El-Far Mohamed Ehab , Kotb Mostafa , Sabry Reda
Published: April 2023

Fast-track construction projects that begin with inadequate design information have become more common in response to a rising construction industry demand. Fast-tracking shortens project duration while increasing rework. To meet project deadlines while minimising rework, specialists must select the best fast-tracking strategy. As a result, a questionnaire was developed to assess the success characteristics of fast-track construction and to provide constraints for these features and variables in national construction projects. National construction projects address specific government needs or investments to maximise the national return. The survey limited these factors by specifying maximum and minimum percentages. These percentages were chosen to expedite project building. The period in national projects varies from that of the typical construction approach to the shortest time that can be achieved with a plan. Cost and quality are within 20 and 10% of those of national project traditional construction methods, respectively. The best setting for various construction projects is determined by these proportions. It is preferable to use these percentages as a reference to complete construction projects within the shortest time, with the highest quality and at the lowest cost. This questionnaire was completed by 211 building experts.
Yükseköğretim Düzeyinde Hazırlanan Ders İzlencelerinin Kuramsal Temelleri ve Ders İzlencesi Önerisi*
Authors: KIZIKLI Gülin , EKİCİ Gulay
Published: April 2023

Yükseköğretim kurumlarının, eğitim-öğretim, araştırma ve topluma hizmet işlevlerini nitelikli bir şekilde yerine getirebilmesi, kalite kavramını ortaya çıkarmaktadır. Eğitim ve öğretimin kalitesini arttırmak amacıyla ders izlencelerinin hazırlanması ise bu noktada önemli çalışmalardan birisidir. Bu araştırmanın amacı, yurt içinde ve yurt dışında yükseköğretim düzeyinde hazırlanan ders izlencelerini analiz ederek kuramsal bir çerçeve oluşturmak ve bu kuramsal çerçeveyi temel alarak örnek bir ders izlencesi şablonu sunmaktır. Bu araştırmada nitel araştırma modeli kapsamında durum çalışması deseni kullanılmıştır. Araştırmanın çalışma grubu, amaçlı örnekleme yöntemlerinden ölçüt örnekleme ile oluşturulmuştur. 10 yurt içi ve 10 yurt dışı ders izlencesi incelenmiş ve 2 uzman tarafından geliştirilen bir dereceli puanlama anahtarı ile analiz süreci gerçekleşmiştir. Ders izlenceleri belli bir sistematik yapıya/özelliklere/kuramsal temele göre incelendiğinden betimsel analiz yapılmıştır. Araştırmadan elde edilen bulgular sonucunda, yurt içinde kullanılan izlencelerinin yurt dışı izlencelerine kıyasla; “öğretim yöntemleri, kurallar ve ilkeler, akademik dürüstlük, engellilik ve mevcut destek hizmetleri” boyutlarını çok az oranda içerdikleri, “öğrenme çıktıları, okuma listeleri ve materyaller” boyutlarını ise daha fazla içerdikleri belirlenmiştir.
Almanca Dilbilgisi Derslerinde Ana Dili Kullanımına İlişkin Öğrenci Görüşleri*
Authors: ÇILDIR Merve , SEYMEN Aylin
Published: April 2023

Araştırmanın temel amacı Almanca dil bilgisi derslerinde ana dili kullanılması üzerine öğrenci görüşlerine başvurmak ve bu doğrultuda Almanca dil bilgisi derslerinde ana dili kullanımının gerekli olup olmaması yönünde bir bakış açısına ulaşmaktır. Bu çalışmada nitel araştırma yöntemlerinden fenomolojik desen tercih edilmiş olup, Gazi Eğitim Fakültesi Alman Dili Eğitimi Anabilim Dalı birinci ve ikinci sınıflardan gönüllü on beş öğrenci ile yarı yapılandırılmış görüşme gerçekleşmiştir. İlgili öğrencilere toplamda yedi soru sorulmuştur. Verilerin analizinde NVivo 12 programından yararlanılmıştır. Elde edilen veriler ilgili programa aktarılarak kategoriler ve alt kategoriler oluşturulmuştur. Öğrenci görüşlerinden elde edilen verilere göre, Almanca dil bilgisi derslerinde ana dili kullanımının önemli bir etkisi olduğu dikkat çekmiştir. Söz konusu olumlu öğrenci görüşleri kapsamında Almanca dil bilgisi derslerinde ana dili kullanımının öğrenciler tarafından desteklendiği görülmektedir. Bazı öğrenciler Almanca dil bilgisi derslerinde ana dili kullanımının hedef dile maruz kalmayı engellediğini düşünerek ilgili dilde pratik yapamadıklarını dile getirirmiştir. Yabancı dil derslerinde ana dili kullanımının bazı olumsuz özelliklerinin olmasına rağmen dil bilgisi derslerinde ana diline başvurulması dil bilgisi konularının anlaşılırlığını arttırdığı öğrenci görüşleri doğrultusunda tespit edilmiştir. Almanca dil bilgisi derslerinde ana diline başvurulmasıyla birlikte öğrencilerin ana dil ve hedef dil arasında karşılaştırma yapma imkânı buldukları, iki dil arasındaki benzerlikleri ve farklılıkları gördükleri, dil bilgisi konularını ana dillerinde daha iyi anlayabildikleri yapılan araştırma sonucunda dikkat çekmektedir.
Physical (In)Activity Gender Gap of Slovak Non-athlete Adolescents
Authors: Adamčák Štefan , Marko Michal , Bartík Pavol
Published: April 2023

Study purpose. Declining levels of physical activity in adolescence are of increasing concern, with data showing the difference of ≥ 8% by gender in favor of adolescent boys; therefore, the present study aims at determining physical (in)activity gender gap of non-athlete adolescent boys and girls in Slovakia.
Materials and methods. Standardized measure to estimate the habitual practice of physical activity (IPAQ-SF) was carried out six months (January – June, 2022), through the intentional sampling of 1 517 Slovak non-athlete adolescent boys (40.54%, n = 615) and girls (59.46%, n = 902), aged 18 – 19 years (18.50 ± 0.50 years), attending the secondary schools. Descriptive statistics (e.g., measures of frequency, central tendency), two-sample t-test and chi-square test (x2) were used to analyze and compare the data.
Results. When considering the physical activity (seven-day week) in adolescence, the Slovak non-athlete adolescent boys and girls reported: (i) high levels of physical activity – 51.73% (n = 785); (ii) moderate levels of physical activity – 25.92% (n = 393); (iii) low levels of physical activity – 22.35% (n = 339) (p ˂ 0.01). When considering the gender gap in physical activity in adolescence, total physical activity (seven-day week), expressed in MET-minutes/ week, was lower (statistically, p ˂ 0.01; difference of 712 MET-minutes/ week) among the Slovak non-athlete adolescent girls (1 898 MET-minutes/ week), compared to boys (2 610 MET-minutes/ week). And when considering the gender gap and sitting time (sedentary behavior), the Slovak non-athlete adolescent girls were more sedentary, compared to boys (p ˃ 0.05) (360 vs. 330 minutes/ week).
Conclusions. Constant low levels of physical activity in adolescence constitute the public health emergency of international concern; therefore, the urgent policy action to increase the physical activity is necessary; in particular, in promoting and retaining the adolescent girls’ participation in physical activity.
DAB-quant v2
Authors: Patel Sneh
Published: April 2023

Here we describe DAB-quant, a new system that facilitates quantitation of large numbers of scanned tissue slides stained via immunohistochemistry with 3,3′-Diaminobenzidine (DAB). The python code, instructions, license, and a link to example scans for analysis are all available at: https://github.com/sarafridov/DAB-quant (The last step in this version contains a supplemental video with extra context and tips, as part of the protocols.io Spotlight series, featuring conversations with protocol authors.)
Examining the Social, Civic, and Political Impact of Local Newspaper Closure in Outback Australia
Authors: Magasic Marco , Hess Kristy , Freeman Julie
Published: April 2023

Scholars across the globe have focused intently on mapping news deserts and gaps where public interest journalism is lacking or in peril. However, little attention is paid to understanding the impacts and changing media-related practices of people who live in communities that lose a designated news service—notably a local newspaper. This article draws on a focused ethnographic study of a small outback mining town, Lightning Ridge (population 2,284), in central New South Wales, Australia. The research was conducted over a two-month period and involved participant observation, 31 interviews with residents and relevant stakeholders, and examination of several media platforms relevant to the town. The article begins with an overview of Australian policy interventions to address the decline of public interest journalism. It then discusses the impact of a local newspaper’s closure via three themes—social, civic, and political. This is important because much of the policy focus in Australia is on the threat “news gaps” present to democracy. However, it is also necessary to understand the nuances of local media’s role in shaping everyday social connections and ritualistic practices and elevating issues to local networks of power. The article concludes by considering how current policy interventions can learn from failed attempts to fill the news gap in Lightning Ridge.
Taste sensations: the role of sensory analysis in controlling the quality of food products
Authors: Lopatin Stanislav A. , Sharonov Alexander N. , Tyts Valery V. , Zharikov Mikhail V.
Published: April 2023

The aim of the study was to investigate the factors that affect a persons subjective perception of food safety. Normative legal acts and documents regulating society as a whole and food products in particular were used during the study. It was proven that preserving and enhancing the specific sensory properties of a food product by changing its chemical composition using falsification methods, cheaper and less nutritious components, is a dangerous direction in the development of food technologies and the evolution of the food system. This approach can lead to a dissonance between the perception of the product as tasty and its nutritional value, which determines its health-preserving effect. The objective assessment of food safety is currently ensured (or should be ensured) by instrumental methods of quality control of food products, which are used in a system that includes both internal (production) control and external (state veterinary and state sanitary and epidemiological) supervision.
浅谈马来西亚华语词的外来语词
Authors: Pei Chong Ni , Qi Chong Pei , Wun Stephanie Tay Cin
Published: April 2023

Abstract: This paper is an attempt to analyze the lexical borrowing from foreign languages to Malaysian Chinese including English, Malay, Japanese and others. The English loanwords in Chinese accounted the most among them. This paper also discuss the cultural meanings contained by the loanwords, especially Malay loan words from which we are then able to explain the various cultural interactions between the Chinese and Malay community in Malaysia. We can also able to see the influences of English due to trace of British colonial era from the English loanwords.

摘要: 本文试图从外来语借此的角度分析马来西亚华人的语词使用情况。马来西亚华语受到源自英语、马来语、日语等影响，其中英语外来词所占的比例最大。本文还讨论了外来词所包含的文化含义，尤其是马来语外来词，从中我们能够解释马来西亚华人和马来社区之间的各种文化互动。我们还可以从英语借词中看到英国殖民时代的痕迹对英语的影响。
汉字与印尼语书写系统比较
Authors: Sakti Karina Fefi Laksana
Published: April 2023

汉字不仅是汉语书写的基本单位，也是承载文化的重要工具。汉字的数量很多，历史悠久，约有六千多年的历史。汉字和印尼语书写系统具有很大的差异，而汉字的学习对外国学生而言具有一定难度，这也是学习汉语的难点之一。本文使用的研究方法主要是对比分析法。首先梳理汉字的特点和印尼语书写系统的特点，在此基础上，通过对比汉字和印尼语书写系统的特点分析两者之间的差异。本研究发现：汉字与印尼语书写系统的差异主要表现在文字性质、文字形状、 文字或语言的音节、 书写语言时空格的使用以及及文字与方言的关系。

Chinese characters are not only the basic unit of Chinese writing but also an important tool for carrying culture. There are a lot of Chinese characters with a long history, about six thousand years of history. Chinese characters are very difficult for foreign students, including Indonesian students, and it is also one of the difficulties in learning Chinese. Chinese characters and Indonesian writing systems are quite different. The research methods used in this article are descriptive and comparative analysis. First, describe the characteristics of Chinese characters and the characteristics of the Indonesian writing system. After comparing the characteristics of Chinese characters and the Indonesian number writing system, the differences between Chinese characters and the Indonesian writing system are found. This study found that the differences between Chinese and Indonesian writing systems are mainly manifested in the nature of the characters, the shape of the characters, the syllables, spaces needed when writing, and the relationship between the text and the dialect.
Habilidades psicológicas en una muestra de jóvenes deportistas cubanos: Diferencias según sexo y deporte
Authors: Ríos Garit Jesús , Pérez Surita Yanet , Soris Moya Yoanny , Calviño Carvajal Dayana , Gómez Quintana Anisleidy
Published: April 2023

El estudio de las habilidades psicológicas en el deporte constituye un campo de investigación de constante vigencia y actualidad para orientar la preparación psicológica con el fin de optimizar el rendimiento, especialmente en jóvenes deportistas en proceso de desarrollo. La presente investigación tiene como objetivo caracterizar las habilidades psicológicas en una muestra de deportistas escolares y juveniles de ambos sexos y diferentes deportes de la provincia de Villa Clara, Cuba. Se desarrolló un estudio descriptivo transversal en el que participaron 87 jóvenes deportistas, donde el 62.1% (n=54) eran mujeres y el 33% (n=33) hombres, con una edad cronológica promedio de 14.75 años (DT=1.74) y una experiencia deportiva de 4.67 (DT=1.90). Fue aplicado el Inventario Psicológico de Ejecución Deportiva para la medición de las habilidades psicológicas, cuyos datos fueron procesados mediante estadísticos descriptivos e inferenciales. Se obtuvo que la autoconfianza, la motivación, el control de afrontamiento positivo y de la actitud constituyen los puntos fuertes, mientras que el control de afrontamiento negativo, de la atención y visuoimaginativo son las habilidades de menor desarrollo.  Solamente el control de afrontamiento positivo es significativamente mayor en los deportistas masculinos y los beisbolistas poseen una preparación psicológica superior al resto de los deportistas analizados. Se concluye destacando la necesidad de estimular el control de las emociones negativas, la atención y las imágenes mentales en los jóvenes deportistas analizados, así como la relevancia del trabajo psicológico especializado en la preparación de los jóvenes deportistas.
Clustering Application and Evaluation of the Countries' Word Risk and Climate Risk Indices
Authors: Eligüzel Nazmiye , Aydoğan Sena , Eligüzel İbrahim Miraç
Published: April 2023

Societies take various initiatives to reduce the impact of natural disasters. Unfortunately, certain nations and regions are better suited than others to finding solutions to the problem, whether for political, cultural, economic, or other factors. This paper deals with the cluster analysis of 170 countries based on world risk index and climate risk index data. We use the k-means approach for clustering in sequential stages of this work. Specifically, we first carry out both the elbow method and silhouette scores to determine the number of clusters. Then clustering analysis is carried out, taking into account the World Risk Index, which includes risks of both exposure and vulnerability. Second, the Climate Risk Index is implemented into the first stage results by clustering countries after determining the number of clusters. Lastly, statistical analyses on the change of clusters for exposure, vulnerability, and climate risk are investigated and discussed in detail. Taken together, each of the risk elements like earthquake, tsunami, socioeconomic development, health care capability, etc. differs by nation. Clusters of countries with similar risks are reported. When the climate risk index is included in the evaluation, the number of clusters increases. The Climate Risk Index has been determined as a variable that cannot be ignored when countries are clustered according to their risk profiles.
A Manhattan distance based hybrid recommendation system
Authors: Uyanık Begüm , Orman Günce Keziban
Published: April 2023

Many online service providers use a recommendation system to assist their customers' decision-making by generating recommendations. Accordingly, this paper proposes a new recommendation system for tourism customers to make online reservations for hotels with the features they need, saving customers time and increasing the impact of personalized hotel recommendations. This new system combined collaborative and content-based filtering approaches and created a new hybrid recommendation system. Two datasets containing customer information and hotel features were analyzed by Recency, Frequency, Monetary (RFM) method in order to identify customers according to their purchasing nature. The main idea of the recommendation system is to establish correlations between users and products and make the decision to choose the most suitable product or information for a particular user. As a result of the exponential growth of online data, this vast amount of information for use in the tourism industry can be leveraged by decision-makers to make purchasing decisions[20]. Filtering, prioritizing, and beneficially presenting relevant information reduces this overload. There are following three main ways that recommendation systems can generate a recommendation list for a user; content-based, collaborative-based, and hybrid approaches[1]. This paper describes each category and its techniques in detail. RFM Analysis is used to identify customer segments by measuring customers' purchasing habits. It is the process of labeling customers by determining the Recency, Frequency, and Monetary values of their purchases and ranking them on a scoring model. Scoring is based on how recently they bought (Recency), how often they bought (Frequency), and purchase size (Monetary). Experimental results show that the accuracy of behavior analysis using Manhattan distance-based hybrid filtering is greatly improved compared to collaborative and content-based algorithms.
FPGA-Based battery management system for real-time monitoring and instantaneous SOC prediction
Authors: Saday Abdulkadir , Ozkan İlker Ali , Sarıtas Ismail
Published: April 2023

Battery management systems (BMS) are becoming essential for all types of electric vehicles using battery packs. Various factors, such as battery temperature and balance, directly affect the life, safety, and efficiency of batteries used in vehicles. For security and robustness, these factors should be monitored and adjusted instantly. Today, battery management systems are constantly being developed using different production methods and algorithms. In the studies, calculations are made by measuring parameters such as temperature, current, current balance, load status, and health status of the battery cells, and the control of the battery group is provided with these calculations. Instant and continuous measurement and processing of all these data and the creation of a control algorithm according to the calculation result are possible with the use of powerful processors. FPGA is a processor that can provide the speed and functionality required for BMS. In the battery management system, the FPGA is responsible for receiving and processing all signals from the battery cells and producing results. It instantly processes the data from temperature, current, and voltage sensors and applies the control stage required for balancing. In addition, the charge and discharge capacity of the battery is calculated by instantly measuring the state of charge (SOC). SOC is of great importance in the battery management system to ensure the safety of the battery pack. Therefore, the SOC needs to be estimated accurately and in real-time. Thanks to its parallel processing capability, the FPGA can simultaneously read data from the sensors and perform related calculations. In this study, a versatile system design with real-time, high computational speed for BMS was carried out on FPGA. The voltage and current of an experimental battery based on the embedded system were monitored in real time in a simulation environment. Experimental results show that the instantaneous SOC estimation is successful, and the system returns instant results to the incoming sensor data. The use of FPGA as a management unit will provide significant advantages in BMS with its high operating speed, real-time monitoring, low power consumption, and re-programmability.
Classification of tea leaves diseases by developed CNN, feature fusion, and classifier based model
Authors: Yücel Nadide , Yıldırım Muhammed
Published: April 2023

Due to the increase in the world population day by day, the amount of food needed is also increasing day by day. Diseases that occur in plants reduce the amount and quality of the product obtained. In this study, a computer-aided model was developed to detect diseases in tea leaves. Because plant diseases can be difficult and misleading to detect with the naked eye by farmers or experts. It is very important to detect diseases in tea leaves using artificial intelligence methods. Three Convolutional Neural Network (CNN) architectures accepted in the literature were used as the basis for the classification of diseases in tea leaves. With these three CNN architectures, feature maps of the images in the data set were obtained. After combining the feature maps obtained in each architecture, they were classified in the Linear Discriminant classifier. In addition, the performance of the proposed model was compared with seven CNN architectures accepted in the literature. The performance of the models used in the study was evaluated using different performance measurement metrics. The obtained results showed that the proposed model can be used to classify diseases in tea leaves.
A Genetic Algorithm Optimized ANN for Prediction of Exergy and Energy Analysis Parameters of a Diesel Engine Different Fueled Blends
Authors: Yaşar Ali
Published: April 2023

In this research, a hybrid artificial neural network (ANN) optimized by a genetic algorithm (GA) was used to estimate energy and exergy analyses parameters. This article presents an approach for estimating energy and exergy analyses parameters with optimized ANN model based on GA (GA-ANN) for different ternary blends consisting of diesel, biodiesel and bioethanol in a single-cylinder, water-cooled diesel engine. The data used in the experiments performed at twelve different engine speeds between 1000 and 3000 rpm with 200 rpm intervals for five different fuel mixtures consisting of fuel mixtures prepared by blends biodiesel, diesel and 5% bioethanol in different volumes constitute the input data of the models. Using these input data, engine torque (ET), amount of fuel consumed depending on fuels and speed (AFC), carbon monoxide emission values (CO), carbon dioxide emission values (CO2), hydrocarbon emission values (HC), nitrogen oxides emission values (NOx), the amount of air consumed (AAC), exhaust gas temperatures (EGT) and engine coolant temperatures (ECT) were estimated with the GA-ANN. In examining the results obtained were examined, it was proved that diesel, biodiesel and bioethanol blends were effective in predicting all the results mentioned in engine studies performed at 200 rpm intervals in the 1000-3000 rpm range. A standard ANN model used in the literature was also proposed to measure the prediction performance of GA-ANN model. The predictive results of both models were compared using various performance indices. As a result, it was revealed that the proposed GA-ANN model reached higher accuracy in estimating the exergy and energy analyses parameters of the diesel engine compared to the standard ANN technique.
Alcoholism and its adverse effects
Authors: Nirmala N. , Hemavathy V.
Published: April 2023

Alcoholism affects both adults and children, and it is a major medical issue. A high predominance of ailment, insufficiencies, and fatalities has been associated to alcoholism. It tends to be influenced by hereditary, psychological, social, and other elements. Misuse of alcohol is a main source of non-communicable diseases and mental illnesses and its all add weight to the alcohol-related disease. With regard to alcohol-related issues, medicine and public health face a conundrum. Early detection is critical for effective analysis and management of patients, hence primary prevention should be emphasized in medical care administrations.
Alarming rise in professional Blood donors and its repercussions
Authors: Singh A.P. , Batra J. , Saxena R. , Saxena S. , Kumar C.
Published: April 2023

The department of transfusion medicine, also known as blood bank, is one of the most important parts of a healthcare facility. It provides whole blood as well as different blood components like packed red blood cells (RBCs), thrombocytes, plasma, and coagulation factors to all necessary patient populations. Almost all major surgeries require it and only 2.5 billion of the 5 billion blood units required by our country each year are available. Because human blood cannot be replaced; the gift of life is given through the optimum use of blood and its components. According to the study, the demand for screened blood is very high, and the world requires blood every two seconds. When a patient is admitted to a hospital’s emergency ward, a blood test is almost always performed first and is usually followed by a blood request. Gunshot wounds and unintentional injuries necessitate immediate medical attention, including blood transfusions to compensate for low blood pressure and significant blood loss. A hospital would be considered incomplete without a state-of-the-art blood bank, which significantly facilitates cardiac procedures. Cross-matching and organizing at least five units of packed RBCs is a scheduled step in cardiac surgery. Simultaneously, one donor is cross-matched and tested for all parameters, including infectious markers, and its blood is drawn first when needed during cardiac surgery. After that, the arranged blood units are supplied for transfusion. This happens because freshly drawn blood contains all of the essential components for coagulation. Burns, hemorrhagic disorders, anemia, leukemia, thalassemia, and hemolytic disorders, as well as accidents, all necessitate the use of blood. Patients are transfused with blood on an exchange basis. During an emergency, blood units are released from the blood bank, and replacement blood is drawn from the patient’s relatives. Because of this system of blood unit replacement, many patients’ relatives are hesitant to donate blood or do not have donors for replacement. This gave rise to one of blood banks’ most unethical practices: bringing in paid donors or professional donors to donate blood for patients in exchange for money. This became a major issue for the entire medical community, resulting in the spreading of diseases such as HIV, HBsAg, HCV, SYPHILIS, and blood with low hemoglobin levels being transfused to patients with no clinical benefits.
Predictability of gestational diabetes mellitus using first trimester Serum uric acid levels
Authors: Prabhat P. , Jain A. , Saxena R. , Batra J. , Saxena S.
Published: April 2023

Introduction: For both mothers and fetuses, gestational diabetes mellitus (GDM) causes major morbidity and mortality in the Indian population. In pregnancy, serum uric acid levels are higher. Elevated first-trimester uric acid levels can be used to predict GDM. Study Design: In 1055 plasma samples taken at a mean gestational age of 9 ±2.1 weeks, uric acid was determined. The three-hour glucose tolerance test used to identify GDM as the main outcome. Results: The percentage of GDM was significantly high among the higher age group with 19.2% among 30-35 years of age and 25.8% among 35-40 years of age. With almost 35% of cases, GDM was most prevalent in the obese category. Among 348 patients with a confirmed family background of diabetes mellitus, 19.5% of pregnant women developed GDM. Uric acid levels were found significantly higher among GDM subjects both in first and second trimesters than in non-GDM subjects. Additionally, both normal and GDM individuals, serum uric acid levels were observed to be significantly greater in the second trimester than the first. Conclusion: First trimester hyperuricemia is linked to a higher chance of developing GDM.
Identification of Acral Melanoma using Genetic Algorithms Compared with Convolutional Neural Network using Dermoscopic Images
Authors: Lakshmi V.N. , Nirmala P.
Published: April 2023

Aim: Identification of acral melanoma using genetic algorithm compared with convolutional neural network CNN using dermoscopic images. Materials and Methods: The study was conducted using the genetic algorithm and convolutional neural network algorithm to analyze and compare the acral melanoma detection. The number of samples used is 20, total sample size is 40. Acral melanoma is identified by evaluating the effectiveness with pre-test power of 80% (G-power), α=0.05, confidence interval 95%. Result: The proposed genetic algorithm helps in increasing the higher accuracy compared to convolutional neural networks with improved accuracy of the genetic algorithm algorithm is 96 % and the convolutional neural network algorithm is 95%. The accurate rate is 80 with the data features found in the genetic algorithm algorithm. Precision is different in each algorithm. Conclusion: This study shows a higher accuracy for the genetic algorithm when compared with convolutional neural networks.
Heart Disease Prediction Based on Age Detection using Novel Logistic Regression over Decision Tree
Authors: Karthi C.B.M. , Kalaivani A.
Published: April 2023

Aim: To improve the accuracy in Heart Disease Prediction using Novel Logistic Regression and Decision tree Materials and Methods: This study contains 2 groups i.e Novel Logistic Regression and Decision tree Each group consists of a sample size of 10 and the study parameters include alpha value 0.01, beta value 0.2, and the Gpower value 0.8. Results: The Novel Logistic Regression (91.60) achieved improved accuracy than the Decision Tree (89.42) in Heart Disease Prediction. The statistical significance difference is 0.01 (p<0.05). Conclusion: The Novel Logistic Regression model is significantly better than the Decision Tree in Heart Disease Prediction. It can be also considered as a better option for Heart Disease Prediction.
Medical Specialists’ Perception About Adoption of Artificial Intelligence in the Healthcare Sector
Authors: Thakkar B. , Bharathi S.V.
Published: April 2023

Artificial Intelligence (AI) has numerous potential applications in the healthcare sector. These applications vary from its use in quicker disease diagnosis to its assistance for efficiently dealing with pandemic situations. Many countries have successfully laid out their strategy for the effective implementation of AI. However, several developing countries are still working on their plan to increase the penetration of AI in various fields, including healthcare, to harness AI’s potential benefits. The research objective is to understand the perception of Medical Specialists about using AI by identifying significant factors that impact their adoption of AI to perform medical tasks. Several medical specialists were surveyed based on five factors taken from 2 popular technology adoption models- UTAUT2 and TAM2. The data analysis on the collected responses (N=111) was done using PLS-SEM. Based on the analysis results, two factors, namely- Facilitating Conditions and Performance Expectancy, are found to positively impact medical specialists’ behavioral intention to adopt AI in their professional life. Decision-makers of developing countries can take appropriate measures based on identified two significant factors to boost AI healttocations’ adoption in their country to solve existing healthcare problems and improve the quality of healthcare services.
Evaluation of Left Ventricular Function after Revascularization of Coronary Chronic Total Occlusion using Speckle Tracking Echocardiography
Authors: Abdelmoneum M.S. , Sabry A.M. , Anis A.S. , Mansour H.A.K.
Published: April 2023

Objective: This study evaluated the role of two-dimensional speckle tracking echocardiography (2D-STE) in evaluation of the LV systolic function in patients had CTO of LAD at 1 day as well as at 3 months after revascularization Methodology: This prospective observational study included 100 patients diagnosed by coronary angiography to have a chronic complete occlusion of the left anterior descending artery. Percutaneous coronary intervention (PCI) was performed. When the residual stenosis was less than 30% of the intraluminal diameter and thrombolysis in myocardial infarction (TIMI) grade III flow was achieved without any major complications, the operation was considered a success. Using speckle-tracking echocardiography was to measure global longitudinal strain and left ventricular functions. Follow-up of patients was done at day 1 and 3 months later after PCI. Results: Global longitudinal strain (GLS) and wall motion score index (WMAI) difference at baseline and follow-up shows a positive correlation with left ventricular ejection fraction (LVEF) changes at baseline and follow-up (p˂0.001). Mean baseline left ventricular end systolic volume (LVESV) was 58.22±11.65 and follow-up LVESV was 50.60±14.07 with statistical difference (p=0.047). Mean value of baseline GLS (-14.26±0.93) and follow-up GLS was (-15.66±0.92) (p˂0.001). Periprocedural complications were contrast induced nephropathy in 3 %, cardiac tamponade 1 % and Emergency re-PCI 1 % Conclusion: Revascularization via PCI to CTO of LAD can improve LV function. These results of the study provide evidence to support the clinical use of 2D-STE to assess the early changes of LV function.
Innovative technologies for the treatment of cervical intraepithelial neoplasia of the cervix
Authors: Kattakhodjaeva M.Kh. , Karshieva E.E. , Amonova Z.D.
Published: April 2023

The urgency of the problem. The prevalence of background diseases of the cervix (CC) today has the character of an epidemic. According to data published in the scientific and medical literature, cervical intraepithelial neoplasias account for up to 70% of all gynecological patients.