bluuebunny/crossref_metadata_2025 huggingface dataset:
Aptamer-regulated colorimetric and electrochemical dual-mode sensor for the detection of uranyl ions utilizing AuNCs@COF composite
Authors: Chen Zhijun , Liu Jinquan , Wang Wenyu , Qin Guoqing , Liu Siru , Zhang Weilin , Peng Changmin , Tan Yan , Dai Zhongran , Zhen Deshuai , Li Le
Published: February 2025

In this context, an innovative dual-mode colorimetric and electrochemical sensor was developed for the detection of uranyl ions (UO22+), utilizing a covalent organic framework@gold nanoclusters (AuNCs@COF) composite. The synthesis of AuNCs@COF was simple, and the incorporation of AuNCs imparted the composite with exceptional peroxidase-like catalytic activity and enhanced electrochemical properties. By regulating the adsorption and desorption of aptamers on the AuNCs@COF surface, both peroxidase-like activity and conductivity were modulated, enabling the detection of UO22+ utilizing colorimetric and electrochemical dual signals. Under optimal conditions, the sensor revealed a broad linear detection range and a low detection limit, with ranges of 1.36×10-10 - 1.36×10-5 mol/L for colorimetric detection and 5.0×10-10 - 2.5×10-5 mol/L for electrochemical detection, achieving detection limits of 107 pmol/L and 347 pmol/L, respectively. Unlike other single-mode sensor for UO22+ detection, this dual-mode sensor demonstrated superior sensitivity, specificity, and repeatability. Furthermore, the results of spiked recovery experiments in real water samples highlight the promising potential of this dual-mode sensor for environmental water monitoring applications.
Dual-Band Absorptive Bandpass Filters with All- Frequency Reflectionless Performance and Enhanced Upper-Band Suppression
Authors: Wu Gangxiong , Jin Yang , Zhang Wei , Jiang Ruirui , Shi Jin
Published: February 2025

This paper presents a novel dual-band bandpass filter (BPF) with two-port all-frequency reflectionless characteristics and enhanced upper-band suppression. The design integrates a square ring resonator (SRR) and advanced coupled lines (CLs), incorporating complementary absorptive branches to achieve broadband reflectionless performance. To mitigate upper-band harmonics, radial-stub-loaded resonators (RSLSs) with high-impedance transmission lines (HITLs) are introduced, extending suppression up to 10f0 without significantly increasing the circuit footprint. A comprehensive theoretical analysis, including parametric studies and transmission zero (TZ) derivation, is conducted to optimize performance. Two prototypes are designed, fabricated, and tested: Prototype I achieves dual-band operation with all-frequency absorption, while Prototype II further enhances harmonic suppression. Experimental results closely align with simulations, with Prototype I exhibiting 3-dB fractional bandwidths (FBWs) of 19.5% and 9.7% at 1.38 GHz and 2.63 GHz, respectively, with insertion losses (ILs) of 0.95 dB and 1.47 dB. Prototype II achieves superior harmonic suppression, with attenuation levels of 22.8 dB over 2.9-20 GHz and 28.5 dB within 3.0–12 GHz. These designs offer high selectivity, inter-band isolation exceeding 45 dB, and full-spectrum absorption, providing an efficient solution for modern RF and wireless communication systems.
EFFECTS OF HAART ON MATERNAL AND FETAL OUTCOME
Authors:   Department of Obstetrics and Gynaecology and Department Of Pharmacology, Government Medical College Nandyal., Sudha Rani G. , Aruna Kumari D. ,   Department of Obstetrics and Gynaecology and Department Of Pharmacology, Government Medical College Nandyal., Padmaja P. ,   Department of Obstetrics and Gynaecology and Department Of Pharmacology, Government Medical College Nandyal.
Published: February 2025

Introduction: HIV infection among pregnant women has emerged as a global public health issue with serious medical, economic and social impact .HIV infection is a global epidemic that now.

Objective of the study: 1.To evaluate the effect of HAART on pregnancy in HIV-infected women. 2.To evaluate the effect of ART on foetal, outcome.affects 39.9 million people worldwide . Mother-to-child-transmission of HIV is a major route of HIV infection in children .This is a prospective observational study conducted in the Department of Obstetrics and Gynaecology, from Nov 2022 to Jan2024 for 15 months at GMC, Nandyal & PPTCT centre of Nandyal district.

Conclusion: It is imperative that every HIV infected pregnant woman should get access to proper antenatal care throughout her pregnancy and every effort should be made to ensure that her child is born free of HIV. Antenatal care and close monitoring in pregnancy can optimise the outcome for HIV infected women and baby.Though present sample size was small to be of statistical significance, our results suggest that better couple education will probably lead to earlier diagnosis, initiation and compliance of therapy to prevent transmission. Our study proves that with the improvised HAART therapy there is better feto maternal outcome which is almost similar to other reference studies conducted elsewhere.
POPULATION AGEING IN INDIA- A GROWING CONCERN
Authors:   Associate Professor of Economics, SDVS Sanghs Shri L. K. Khot College of Commerce, Sankeshwar., I. Madiwalappagol Shakuntala
Published: February 2025

Population ageing is a global phenomenon. The population of elderly ( 60+) is increasing globally. The number of elderly is increasing faster than the general population across the world. The world population is not only increasing but also growing older due to increased life expectancies and decreased fertility rates across nearly all countries.Indias aging population is growing rapidly but the pace of ageing in India is considered moderate compared to some other South Asian countries. Indias elderly population is projected to grow from 10.5 % in 2022 to 20.8 % by 2050.At present India is quite young having the advantage of youth bulge. Indias population has a large percentage of young people. But it is projected to become a rapidly ageing society in the coming decades. The share of elderly people aged 60 years and above is increasing. Hence this is an area that has to be received adequate attention. Hence the present paper is focused on the problems of the ageing population and causes for the growth of elderly population and policy implications. The study of Indias populationageing is the most crucial factor for planning purposes. Indias Total Fertility Rate( TFR) was dropped from 6.18 in the 1950sto 1.9 in 2021, which is below the replacement level of 2.1.
SURVEY OF CHALLENGES AND MISTAKES IN ROOT CANAL PREPARATION: A STUDY FROM BULGARIA
Authors: Giragosyan Hachko , Filipov Ivan
Published: February 2025

Aim: The aim of this study is to investigate the challenges and procedural errors encountered by dentists in Bulgaria during root canal preparation.

Materials and methods: An original questionnaire consisting of five questions was developed and distributed at congresses, seminars, and through Microsoft Forms to dentists in Bulgaria regarding their challenges and procedural errors encountered during root canal preparation.

Results: The survey of 213 Bulgarian dentists found that most handle fewer than five primary endodontic cases per week. Common complications include instrument separation (24.9%) and dentinal mud accumulation (24.4%). Trends showed more dentinal mud accumulation with Blue alloys (68.8%) and more ledge formation with Gold alloys (31.4%).

Conclusion:This survey among Bulgarian dentists identified key challenges in root canal preparationwith common complications including instrument separation, dentinal mud accumulation, and ledge formation. These findings emphasize the importance of best practices to minimize errors and improve treatment outcomes.
Nanoemulsion Based on Piper tuberculatum Essential Oil for the Treatment of the Crop Pest Bemisia tabaci Biotype B
Authors: S. Rodrigues Stefane , L. Gomes Sara , S. Gaspar Yanka Manoelly , F. e Silva Maria Carolina , B. Silva Luciana , G. de Lima Sidney , Cantanhêde Welter , S. Araújo Francisca Diana
Published: February 2025

The agricultural sector has been searching for eco-friendly methods for pest control. Essential
oil-based formulations are promising alternatives. Here, we developed a nanoemulsion based
on Piper tuberculatum Jacq. essential oil to control Bemisia tabaci biotype B. The essential oils
extracted from P. tuberculatum leaves were mostly composed of β-caryophyllene (16.86%),
germacrene D (13.39%), and α-pinene (11.60%). Nanoemulsions containing essential oils were
significantly toxic to B. tabaci adults 24 h after cabbage leaf treatment. The lethal concentration
required to reduce the number of individuals by 50% (LC50) was 8700 ppm, with a confidence interval
(95% CI) of 7900-8800 ppm. Notably, nanoemulsions with 10000 and 20000 ppm essential oils
presented insecticidal activity statistically similar to that of commercial synthetic insecticides. Our
findings highlight the innovative potential of P. tuberculatum essential oil nanoemulsions as effective alternatives for controlling B. tabaci, providing a sustainable and economically viable solution.
Characterization of nitrate pollution in the Mio-Plio-Quaternary groundwater body of the Boughezel region, Eastern Algeria
Authors: Ziani Dalila , Maaliou Aziz , Djekoune Leila , Moussouni Abderzak
Published: February 2025

This study examines the spatio-temporal evolution of nitrate levels in the groundwater of the Boughezel region in eastern Algeria. The study area is located in Mio-Plio-Quaternary alluvium and is characterized by an aquifer influenced by intensive agricultural activities. Twenty-one water samples were collected during two campaigns, corresponding to low and high-water periods, allowing for seasonal variations in water quality to be captured. Nitrate concentrations were measured, and results show that nitrate levels exceed World Health Organization standards in approximately 50% of the analyzed water points, reaching up to 111 mg/L during the high-water period. An in-depth statistical analysis identified a significant correlation between nitrate levels and agricultural practices, highlighting the significant impact of anthropogenic activities on groundwater quality. This study underscores the need for management strategies, such as regulating nitrogen fertilizer use and reducing the discharge of untreated wastewater into the natural environment, to mitigate nitrate contamination.
Dinâmica do uso e ocupação da terra e seu efeito na temperatura e na precipitação no bioma Caatinga (Floresta Tropical Sazonamente Seca) - Brasil
Authors: Paula Alessandro , Magnago Luiz Fernando Silva , Tagliaferre Cristiano
Published: February 2025

O objetivo deste trabalho foi avaliar a existência de influência da dinâmica do uso e ocupação da terra na Caatinga sobre a precipitação e temperatura. Para a determinação da temperatura, precipitação, número de dias sem chuva e áreas das classes, foi utilizada a plataforma Google Earth Engine. A precipitação foi avaliada pelo Índice de Anomalia de Chuva. As análises de tendência foram realizadas pelo teste de Mann-Kendall. Foi calculado o Coeficiente de Correlação de Pearson entre as variáveis climáticas e as classes de uso e cobertura da terra. A dinâmica do uso e ocupação da terra entre 1991 e 2020 demonstrou um avanço das áreas antropizadas. O número de dias consecutivos sem chuva, que entre 1981 e 1990 tinha seu maior valor em setembro, nas décadas posteriores foi observado em outubro. Para a temperatura foi observada uma tendência de aumento entre 1991 e 2020. Não foi possível estabelecer uma relação entre o uso e ocupação da terra e a precipitação. A redução da área ocupada pelas formações de maior porte aumenta a temperatura na região. A mudança do uso e ocupação da terra não afetou a precipitação na região, mas teve impacto direto na temperatura do ar.
Mitigating Emotion Dysregulation in Adolescents: The Effectiveness of Vipassana Meditation
Authors: Mani Santwana , Sharma Roopali , Kumar Navin
Published: February 2025

Introduction. Mood swings, hypersensitivity, stress, and frustration intolerance are only the tip of the iceberg when it comes to the problems adolescents have in properly controlling and regulating their emotions. Their relationships, ability to make decisions, and general happiness may all suffer because of their difficulties with emotional regulation. Vipassana meditation (VM) promotes awareness of the need for change, enhances mental focus, and opens the door to more introspective thought. Methods. The purpose of this research was to examine the impact of vipassana meditation (VM) on adolescents' (n = 60) inability to control their emotions. Participants were randomly assigned in groups: vipassana meditators (those who practise meditation daily) or non-meditators (those who don't practise any form of meditation). A measure of emotional dysregulation, the DERS-36, was administered concurrently to both groups. Results. A statistically significant difference was discovered between the two groups using SPSS-27, suggesting that vipassana meditators have better than non-meditators at keeping their emotions in check. The effect size of vipassana meditation was also investigated, and researchers found it to be 197.136 which indicates a strong impact of vipassana meditation. Overall, vipassana meditation has good impacts 77.9% of variance on the level of emotion dysregulation among adolescents. Discussion. The statistics show that people struggle to keep their feelings in check, suggesting that VM could be helpful. Young people have a better chance of thriving as adults if they are helped when they are struggling.
Развитие процессов слухового анализа у пользователей кохлеарных имплантов с применением программных средств
Authors: Королева Инна В. , Балякова Анна А. , Столярова Эльвира И. , Пак Сергей П. , Огородникова Елена А.
Published: February 2025

Introduction. Modern technology for auditory prostheses (digital hearing aids, cochlear implantation) creates conditions for auditory rehabilitation of individuals with severe hearing loss and even deafness. In this case, the important task of developing and updating sensory experiences arises, including the formation of the primary auditory–speech analysis processes, the consolidation of new intersensory connections, and the mechanisms of auditory–motor integration, which form the basis for communication and cognitive activity under new interactions with the environment. An effective solution to this psychophysiological problem can be facilitated by using specialized software that provides a targeted training of the perception skills necessary to implement the function of auditory–speech communication in patients with hearing impairments and by objective assessment of the individual progress of their rehabilitation using psychophysical methods. This study aimed to test the effectiveness of using software in sophisticated situations of rehabilitation after cochlear implantation. Methods. The specially designed software tools were used to develop the processes of auditory analysis of perception and speech in cochlear implant users of different ages with pre- and post-lingual deafness. The results were assessed according to psychophysical testing based on quantitative indicators of correct recognition and reaction time. Three series of the study were related to the following sophisticated rehabilitation situations: (a) late implantation (n = 32), (b) auditory analysis of dynamic signals during the perception of prosodic information in speech (n = 36), and (c) in conditions of spatial orientation (n = 25). Results. New data and the results of their comparison indicated a significant improvement in the detection and analysis of basic spectral-temporal features of non-speech and speech signals (interruption by a pause, change in a rhythmic pattern of sound stimulation, location and movement of the sound source, phonetic categories and prosodic characteristics of speech), as well as the use of auditory–speech skills by cochlear implant users in everyday situations after training. Discussion. In general, experience in the practical use of software tools indicates that it is advantageous to integrate them into methodological tools for cochlear implant centers and auditory training in the education of children with hearing impairments.
Что скрывается за «недостатками многозначности» при восприятии двойственных изображений?
Authors: Филиппова Маргарита Г. , Андриянова Наталья В. , Чернов Роман В.
Published: February 2025

Introduction. The focus of the problem of advantages and disadvantages of ambiguity is the question of whether it facilitates or hinders information processing. The relevance of the problem is due to the inconsistency of the available experimental data. Experiments do not take into account whether ambiguity is aware or unaware, but recording it could clarify the problem at hand. Our approach implies separating ambiguity that is both aware and unaware. In our study, we test the idea that the presence of unaware meanings provides greater concreteness of aware meanings compared to unambiguous stimuli. Methods. Stimuli were ambiguous figures. Subjects (n = 92) sorted two sets of cards, each containing one ambiguous figure, into a convenient number of classes. The operationalized hypothesis is that the classes into which images with unaware ambiguity fall will include fewer items than classes without ambiguous figures. Results. Intergroup comparisons revealed the differences expected according to the hypothesis: classes with ambiguous figures were more sparsely populated than classes with unambiguous versions of the same figures. Discussion. Rather than interpreting the result in favor of the disadvantages of ambiguity, we explain it by narrowing the equivalence range of an ambiguity stimulus, allowing the stimulus to be instantiated in an optimal way. The important role of unaware meanings in the process of interpreting perceived information is confirmed.
Lurking In Office WhatsApp Group: Examining the Role of Neuroticism, Knowledge Contribution Loafing, Fear of Losing Face, and Playing Dumb
Authors: Rahardjo Wahyu , Mulyani Indah , Santoso Milka , Arianty Meity , Yogandito Ridho Akbar
Published: February 2025

Introduction. WhatsApp group is ofen used as online communication among employees for achieving effectiveness and efficiency at work. However, they often passive and silent and may hardly contribute much to work-related discussions which known as lurking behavior. This study aim to measure whether a number of variables such as neuroticism, knowledge contribution loafing, fear of losing face, and playing dumb affect the lurking in the WhatsApp office group. Methods. Participants in this study were 600 employees from various cities in Indonesia. Multiple regression was carried out to measure the effect of each variable on the hole as the dependent variable. Results. The results showed R square = 0.615 which means, all independent variables have a large and significant contribution on lurking behavior. Although all the independent variables had a great influence on lurking, partially it appeared that only neuroitisism and fear of losing face had a significant effect on lurking. Discussion. Tasks at work are often delegated, shared, and discussed with work team members through WhatsApp groups. These conditions can encourage individuals with high neuroticism to withdraw from conversations in WhatsApp groups. It happens because that condition makes individuals with high neuroticism feel anxious, uncomfortable, and vulnerable to pressure as a result of work-related discussions in WhatsApp office groups. In addition, the fear of getting a negative response in the form of criticism from other group members, which includes personality, the fear of being wrong, and not believing in the environment, is a factor that must be considered in lurking behavior.
Степень порицания коррупции у россиян с разным уровнем отношения к социальному доминированию
Authors: Максименко Александр А. , Крылова Дина В. , Дейнека Ольга С.
Published: February 2025

Introduction. Status relationships and status perceptions are the main driving forces for behavior, self-perception, and the individual picture of the world. This empirical study aims to investigate the relationship between moral outrage over corruption among Russians and their attitudes toward social dominance. In addition, the social dominance orientation (SDO) scale was approved and validated. Methods. A total of 509 subjects participated in an online survey (mean age 41.34 years, SD = 10.67; 57.6 % males, 42.4 % females). The study used the Social Dominance Orientation scale, the 5-point scale to measure awareness of corruption (General Social Survey), the 4-point scale to measure outrage over corruption, and the Short Dark Triad questionnaire. The data were processed with the SPSS 19.0 software. Results. The results of the study showed a positive relationship between the degree of moral outrage over corruption and the approval of the social hierarchy among Russians. The exploratory factor analysis of the data from the Social Dominance Orientation scale made it possible to distinguish the following three factors: (a) “the idea of social equality (anti-egalitarianism)”, (b) “the idea of social dominance (egalitarianism)”, and (c) “the idea of rivalry (competition)”. The correlation analysis showed significant correlations between personality traits of respondents (the parameters of the dark triad) and their attitudes toward social dominance. Discussion. The findings of this study are confirmed by the results of previous studies on the impact of social dominance orientation on the low level of awareness of corruption, which in turn contributes to the desire to maintain the social hierarchy and strengthens corrupt intention. Furthermore, according to the results of foreign studies, psychological predictors for corrupt intention are competitive world beliefs and dangerous world beliefs. This requires additional verification and is the objective of our future research.
Ментальная регуляция психических состояний студентов в повседневной и напряженной ситуациях обучения
Authors: Прохоров Александр О. , Чернов Альберт В.
Published: February 2025

Introduction. In modern conditions of life, the problem of regulation of mental states and behavior of the personality is of particular relevance. Today Individual style of behavior self-regulation, or self-regulation of functional states consider existing approaches and concepts as a specific type of personality activity. The central place is occupied by the structures of consciousness: semantic, reflective, representative, etc. in the concept of mental states’ regulation developed by the authors. The functional organization of the structures of consciousness is formed in connection with the specifics of complexes consisting of mental structures, mental states and operational means of regulation. Methods. 132 students took part in the study (average age – 19 years, second-year students of the Institute of Psychology and Education of the Kazan (Volga Region) Federal University). We studied the intensity of manifestations of mental states and the effectiveness of their self-regulation on the mental structures in everyday (at lectures) and in stressful (at exams) situations of learning activity. Separately, we studied the severity of each component of the mental structure: semantic structures, reflection, self-attitude in the regulatory process. We studied mental structures using standardized methods and specially developed author's questionnaires. Results. The situational conditionality of the effectiveness of students’ mental states regulation is revealed. In an everyday situation, the key elements of the functional regulatory structure are the reflection of states, the emotional richness of life and the acceptance of people around. In a stressful situation, students' confidence in their abilities, satisfaction with self-realization and a low level of reflection on experience come to the fore. Discussion. The results confirm the concept of mental states’ regulation, denoting the significant role of the consciousness structures (reflective, semantic, self-system) in the regulation of mental states of students. The results are also consistent with the studies of other authors who deal with this problem.
Конструктивный потенциал тревожности и подходы к его пониманию
Authors: Агишева Анастасия А.
Published: February 2025

Introduction. Today there is a there is a tendency towards reduction, medicalization and pathologization of the phenomenon of anxiety, caused by the increased focus of research interest mainly on destructive manifestations of anxiety. However, it is the constructive aspects of anxiety that potentiate the development of personality and the formation of subjectivity, being a driving force that plays a significant role in the transformation of the objective world. Despite the presence of many voluminous and multifaceted studies devoted to the issues of anxiety and its various characteristics, modern theoretical ideas about this phenomenon are scattered and mosaic in nature, which determines the need for additional comprehension and systematization of the accumulated knowledge. Theoretical justification. Constructive anxiety (adaptive, normal) implies the ability of a person to respond adequately to stimuli that lead to the solution of actual problems, causing the experience of anxiety, as well as the ability to differentiate real threats from phobic and obsessive tendencies. The constructive aspect of existential anxiety consists in maintaining an optimal level of intrapsychic tension of the subject, playing the role of a necessary adaptive resource of the personality in a stressful situation. The level of anxiety, effective from the point of view of the implementation of activity in general, is in the zone of the nearest development of the personality, while being potentially beneficial in relation to the success of intellectual activity in particular. Discussion. The systematization of the analytical base allows us to introduce a generalizing definition of the constructive potential of anxiety: an individual personality characteristic reflecting the maximum accessible level and unique pattern of anxiety experience, contributing to effective development, self-actualization and subjective well-being. The problem of humanity and the expediency of revising traditional approaches to understanding anxiety, reassessment of established normative thresholds, the dilemma of primacy of occurrence and causal uncertainty are serious challenges for contemporary researchers of anxiety and personal anxiety. Attention to the constructive potential of anxiety in scientific, practical, educational and outreach activities may be one of the key resources in the course of humanity's adaptation to the rapidly changing, poorly predictable and highly stressful conditions of the modern world.
Личностные черты, эмоции и метакогнитивные навыки как предикторы субъективного благополучия субъектов образовательной деятельности в современных условиях
Authors: Денисова Екатерина Г. , Куприянов Игорь В. , Гостева Анастасия О.
Published: February 2025

Introduction. The article analyzes the phenomenon of psychological well-being by examining its internal, subjective factors. It emphasizes the significance of well-being research in contemporary contexts and conducts an analysis of recent studies exploring the correlation between well-being and personality traits, emotional regulation, and metacognitive skills among students, teachers, and other educational professionals. The primary aim of this study was to identify predictors of subjective well-being within the cohorts of students, teachers, and other university staff. A total of 453 individuals participated in the research: 313 students, 106 teachers, and 45 other university employees. Methods and questionnaires employed included the short portrait questionnaire of the Big Five (B5-10, 2016), the 'Differential Emotions Scale' technique (SDE, adapted in 2003), the 'Personality Differential' test (2015 version), the methodology for diagnosing an individual's subjective well-being (Shamionov R.M., Beskova T.V., 2018), a questionnaire assessing metacognitive involvement in activity (adapted by A.V. Karpov, 1994), the 'Self-assessment Scale of Metacognitive Behavior' (adapted by A.V. Karpov, 1998), the 'Differential Type of Reflection' test (D.A. Leontyev, E.M. Lapteva, E.N. Osin, A.Zh. Salikhova, 2009), and the 'Cognitive Regulation of Emotions' questionnaire (adapted by O. L. Pisareva, 2007). The research design encompassed multiple stages of data analysis, involving comparative and regression analyses. Results indicated a direct correlation: heightened levels of metacognitive involvement and increased awareness of metacognitive skill utilization were associated with elevated levels of subjective well-being among educational practitioners. Additionally, a positive impact was observed from heightened scores on conscientiousness, extraversion, agreeableness, openness to experience, and the adoption of positive refocusing and positive revision strategies. Conversely, lower scores on introspection, neuroticism, and the acute negative emotion index also positively influenced subjective well-being. Discussion. The described findings offer valuable insights for addressing challenges such as preventing burnout and enhancing the well-being of students, teachers, as well as support and administrative staff within educational institutions.
Роль психологических ресурсов в преодолении сложных жизненных ситуаций у образовательных мигрантов
Authors: Клименко Виктор А. , Гришина Анастасия В. , Проненко Евгений А.
Published: February 2025

Introduction . The paper examines a number of psychological characteristics of educational migrants associated with their success in overcoming difficult life situations. The relevance of the study is due to the need to study the processes of internal and external educational migration. Their study will make it possible to find more effective approaches to training highly qualified personnel, and on the part of universities, to more effectively build a system of psychological support for visiting students. Methods. The study involved 482 students from universities in Ekaterinburg, Tomsk and Rostov-on-Don. 382 students are educational migrants, 100 students live in the region of study and form the control group (“non-migrants”). Methods used: “Resilience” by S. Maddi, adapted by D. A. Leontyev and E. I. Rasskazova; “Tolerance of Uncertainty” by D. McLane, adapted by E. G. Lukovitskaya; “Psychological Well-Being Scale” by K. Rieff, adapted by N. N. Lepeshinsky; the author's questionnaire, with the help of which the specifics of living in difficult life situations were determined. Results. Between the general sample of educational migrants and non-migrants, differences were identified in the resilience test scales – “Control”, “Risk” – and the total indicator of resilience (p = 0.001). External educational migrants have statistically significantly higher scores on tolerance to uncertainty compared to non-migrants (p ≤0.05), but they also have lower scores on general psychological well-being compared to internal educational migrants. Educational migrants who coped less successfully with the experiences of difficulties in their studies are statistically significantly less inclined to take risks (p≤ 0.05). Discussion. International students have higher levels of resilience than internal migrant and non-migrant groups. Perhaps young people with an initially higher level of personal resources decide to migrate for education, and external migrants have to overcome more difficulties than internal and non-migrants, which helps to increase their personal resources.
Técnicas de eficiência energética aplicadas ao protocolo fte-leach em ns-3
Authors:   , Souza José Ewerton da Cruz de
Published: February 2025

Esta pesquisa apresenta um estudo sobre técnicas de eficiência energética e o protocolo de
roteamento Fault-tolerant and Energy-efficient LEACH (FTE-LEACH) em Redes de Sensores
sem Fio (RSSF). A fim de garantir a interoperabilidade entre os diversos dispositivos de uma
RSSF, o Institute of Electrical and Eletronics Engineers (IEEE) desenvolveu o padrão IEEE
802.15.4, que fornece um conjunto de regras novas às camadas físicas e de enlace de acordo com
o Modelo de Camadas OSI. O padrão IEEE 802.15.4 permite que as camadas de rede e aplicação
sejam definidas pelo usuário. Neste sentido, foram desenvolvidas diversas pesquisas, originando
novos protocolos, dentre estes, os protocolos que buscam a eficiência energética, tais como o
Low Energy Adaptive Clustering Hierarchy (LEACH) e o Fault-tolerant and Energy-efficient
LEACH (FTE-LEACH). No estudo realizado, foi desenvolvido um Módulo de Simulação em
Network Simulation 3 (NS-3), que permitiu avaliar os impactos no consumo de energia que
o protocolo FTE-LEACH promove na RSSF. As contribuições desta pesquisa consistem na
criação do Módulo em NS-3; da construção e apresentação de pacotes e tipos de mensagens; do
encapsulamento do protocolo FTE-LEACH no WirelessHART (camada de enlace); da adoção
de 16 (dezesseis) canais disponíveis no padrão IEEE 802.15.4; da elevação da dependabilidade
ponderada pela eficiência energética; da eleição centralizada de Cluster Head (CH) sem agregar
novos pacotes na rede; dos testes e resultados mais precisos obtidos por meio do NS-3; do uso da
tecnologia TDMA em todas as etapas do protocolo e do paralelismo de pacotes na comunicação
intraclusters quando canais diferentes são utilizados. Apesar das contribuições, esta pesquisa
mostra, que ainda é possível aperfeiçoar o protocolo FTE-LEACH, por meio da utilização de
lógica fuzzy, de técnicas de balanceamento do consumo energético e implementação de broadcast
no TDMA adotado do WirelessHART.
Avaliando a relação existente entre os escopos de requisitos e código: um estudo envolvendo sistemas em evolução
Authors:   , Silva Filho José Renato da
Published: February 2025

Sistemas de software estão em constantes mudanças durante sua evolução, essas
mudanças estão diretamente ligadas com a gestão de requisitos de seus produtos.
Quando requisitos são bem gerenciados, eles evoluem de forma mais precisa e os custos
de desenvolvimento são reduzidos, isso inclui evitar mudanças desnecessárias no código
em evolução. Sabe-se que boa parte das mudanças demandadas durante a evolução
do código está associada ao escopo dos seus elementos. Porém, não há estudos que
investiguem se variações no escopo dos requisitos estão correlacionadas com variações
no escopo das composições de código.Oobjetivo principal desta dissertação de mestrado
é prover aos engenheiros de requisitos meios de monitorar a variação do escopo dos
requisitos de software e correlacioná-los com o escopo dos elementos de código em
evolução, o qual possui impacto negativo comprovado sobre o número de mudanças
demandadas em artefatos de código em evolução. Neste contexto, foi formulado uma
métrica para quantificar o escopo de requisitos e com base nela foi desenvolvido um
plug-in, denominado MeRS, que fornece meios para automatizar esta quantificação. Por
meio do MeRS foi conduzido um estudo exploratório com o objetivo de correlacionar
os escopos nos níveis de requisitos e código. Para tanto, analisamos a evolução dos
requisitos e código, com foco em escopo, de duas aplicações em evolução: NotePad e
Mobile Media. Os resultados mostraram que os valores do escopo dos requisitos estão
correlacionados com o escopo do código.
Contribuições em otimização combinatória para o problema de corte bidimensional guilhotinado não-estagiado
Authors:   , Silva Jonathan Lopes da
Published: February 2025

Os problemas de corte de materiais são recorrentes no cotidiano da indústria, sendo
encontrados nas mais diferentes formas.Oproblema de corte bidimensional guilhotinado
é uma dessas formas. Ele surge pelas restrições da ferramenta de corte, tipicamente
a guilhotina. Este trabalho apresenta três abordagens para solucionar o problema
em questão: uma abordagem matemática, uma abordagem exata computacional e
uma abordagem heurística. A abordagem matemática consiste em um modelo de
programação linear baseado em listas de itens e montagem do arranjo de corte partindo
dos itens, unindo-os dois a dois, tentando maximizar o número de uniões sem ultrapassar
as dimensões da placa. A abordagem exata computacional tratá-se de um algoritmo
Branch-and-Bound modificado para permitir que estados mais promissores possam ser
analisados antes, comportando-se como um algoritmo de busca em profundidade com
uma pequena etapa em largura, na qual ordena os filhos na árvore de decisão pelo
desperdício gerado. Por fim, a abordagem heurística é composta das metaheurísticas
GRASP, Busca Tabu, Algoritmo Genético, BRKGA e Religação de Caminhos combinados
com uma heurística de montagem baseada nos algoritmos propostos por Nascimento,
Longo e Aloise (1999). Essas metaheurísticas foram combinadas em um time assíncrono
para alcançar melhores resultados que os já encontrados na literatura. Além de melhorar
os resultados conhecidos, a pesquisa também tinha como objetivo apresentar um
modelo viável, em número de variáveis, e resultados ótimos para instâncias comumente
utilizadas para o problema supracitado e novas opções de obtê-los em instâncias que
venham a surgir no futuro. Testes mostraram a competividade dos algoritmos propostos
frente aos melhores resultados encontrados, reduzindo inclusive o número total de
placas, bem como a capacidade dos métodos exatos propostos de encontrar as soluções
ótimas para as instâncias testadas. Cerca de de 25% dos resultados ótimos foram
encontrados, passando esse número para 75%, quando considerados os resultados dos
algoritmos metaheurísticos que atingiram o limite inferior das instâncias.
Comparative Analysis of Dexmedetomidine and Fentanyl as Adjuvants to Hyperbaric Ropivacaine 0.75% in Spinal Anaesthesia for Lower Limb Orthopaedic Surgeries: A Randomised Double-Blind Study. (Preprint)
Authors: Sai Amritha , Tiwary Praveen Kumar , Kumar Sourabh , Kumar Tushar , Suman Saurabh , Lakra Ladhu , Priye Shio
Published: February 2025

BACKGROUND

Spinal anaesthesia is the most widely used anaesthetic technique for lower limb surgeries. The recently introduced hyperbaric ropivacaine has the advantage of a better hemodynamic profile during anaesthesia. Its effects can be enhanced by adding adjuvants like opioids and alpha-2 agonists thus enhancing faster recovery and improved postoperative pain. In this study, we aimed to assess the quality of block in hyperbaric ropivacaine with fentanyl or dexmedetomidine and compare it with a placebo.

OBJECTIVE

Our study aimed to compare the clinical effects of intrathecal 3ml of 0.75% hyperbaric ropivacaine with adjuvants, fentanyl 25mcg and dexmedetomidine 10mcg in patients undergoing elective orthopaedic lower limb surgeries. The primary objective was to compare the onset and duration of sensory block by bupivacaine 0.5% heavy and ropivacaine 0.75% heavy. Secondary objectives were analysis of adverse events, hemodynamic changes, regression of sensory block, onset & duration of motor block and timing of the first analgesic given after surgery.

METHODS

This prospective randomised, double-blind experiment involved 120 patients scheduled for lower limb orthopaedic surgery who were randomly assigned to three equal groups. Onset and regression of sensory and motor blocks, hemodynamic changes, time of first rescue analgesia and side effects were noted. Data was tested by one-way ANOVA, chi-square test and Spearman’s correlation analysis.

RESULTS

The mean time for two-segment regression from the highest sensory block was 88.88±7.63 minutes in the fentanyl group, 94±9.00 minutes in the dexmedetomidine group and 74.63±9.56 minutes in normal saline group with p < 0.05.

CONCLUSIONS

In our study, we conclude that ropivacaine with fentanyl has a faster onset. At the same time, dexmedetomidine as an adjuvant provides a longer duration of action and a longer time for the first dose of rescue analgesia demand.

CLINICALTRIAL

CTRI reg no: CTRI/2023/09/058000 dated 25-09-2023
Interpretable Analysis of a Functional Magnetic Resonance Imaging-Based Migraine Classification Model (Preprint)
Authors: Li Guohao , Yang Hao , He Li , Zeng Guojun
Published: February 2025

BACKGROUND

Deep learning has shown great promise in advancing computer-aided diagnosis for neuropsychiatric diseases like migraines. However, the ability to interpret the image classification results lags far behind, confounding their clinical translation.

OBJECTIVE

To utilize explainable artificial intelligence (XAI) methods combined with different MRI indicators to generate brain activation heatmaps, compare the effectiveness of different fMRI indicators and network architectures in classifying migraines, determine the best combination to enhance classification performance, and assess the potential of XAI technology in clinical diagnosis.

METHODS

The study included scans from 21 migraine patients without aura, 15 patients with aura, and 28 healthy controls. Various fMRI indicators [amplitude of low-frequency fluctuations (ALFF), regional homogeneity (ReHo), and regional functional correlation strength (RFCS)] and three network architectures (GoogleNet, ResNet18, and ViT-B/16) were used to classify migraines. The classification performance of each model was compared, and heatmaps were generated using Grad-CAM or self-attention mechanisms to identify discriminative regions.

RESULTS

The GoogleNet model combined with RFCS indicators achieved the best classification performance, with an accuracy of over 98.44% and an area under the receiver operating characteristic curve (AUC) of 0.99 for the test set. Additionally, among the three indicators, the RFCS indicator improved accuracy by about 8% compared to ALFF. Brain activation heatmaps generated by XAI technology revealed that the precuneus and cuneus were the most discriminative brain regions, with slight activation also observed in the frontal gyrus.

CONCLUSIONS

The use of XAI technology combined with brain region features provides visual explanations for the progression of migraine in patients. Understanding the decision-making process of the network has significant potential for clinical diagnosis of migraines, offering promising applications in enhancing diagnostic accuracy and aiding in the development of new diagnostic techniques.
EPIDEMIOLOGY AND CLINICAL PROFILE OF DENGUE AND CHIKUNGUNYA INFECTION AND SEROTYPE DIVERSITY OF DENGUE VIRUS IN NORTHERN INDIA
Authors: SHAILPREET K SIDHU  , MANINDER KAUR  , KANWARDEEP SINGH  , NEELU NAGPAL  , MAASHA BANGARH  , RATNEEV KAUR  , HARSHIL SIDHU
Published: February 2025

Objectives: Dengue and chikungunya (CHIKV) are major public health problem and are notable arthropod viral infections due to their expanding geographical distribution. As there are multiple serotypes of dengue virus circulating concurrently with CHIKV virus, the present study was conducted to describe the seroprevalence, epidemiological characteristics, clinical profile, seasonal trends, coinfection, and prevalent circulating dengue virus serotypes (DENVs).
Methods: Serum samples from clinically suspected cases of dengue and CHIKV were subjected to serological testing by performing enzyme-linked immunosorbent assay. The particulars of the patient including case history, demographic characteristics, co-morbidities, clinical features, and evolution of symptoms were recorded. Further, samples which were positive for NS1 antigen were subjected to multiplex real-time reverse transcription polymerase chain reaction testing for typing of DENVs 1, 2, 3, and 4.
Results: Seroprevalence of dengue and CHIKV was reported to be 23.39% and 20.65%, respectively. Maximum number of cases were reported in the age group of 21–40 years. Common clinical presentations in dengue patients were fever, myalgia, headache, and nausea/vomiting whereas in CHIKV, the most common symptoms were fever, myalgia, and joint pains. On molecular surveillance, DENV-2 was detected in maximum cases (73.33%) followed by serotype 3 (11.66%).
Conclusion: Dengue and CHIKV infections continue to co-exist and there is substantial overlap in their clinical presentation. Simultaneous diagnosis of both viruses will help in evaluation, appropriate treatment, and prophylactic measures. Surveillance of DENVs needs to be closely monitored for the emergence of new serotypes.
An Economic Analysis of Goods and Services Tax in India
Authors: Singh Satvir , Choudhary Minakshi
Published: February 2025

GST has been adopted by nearly 140 countries around the world. In this connection, the present paper is an attempt to find out an economic analysis of Goods and Services Tax in India. This paper found that some taxes of central and states taxes such as Central excise duty, Duties of excise, Additional duties of excise, Special Additional duties of custom, Services tax, State VAT central sales Tax and Purchase Tax, etc. would be subsumed in GST. This study also found some advantage such as Increase the Gross Domestic Product, Promotion of Exports, Reduction in the cost of production, Reduction in the transportation cost, Beneficial for the Low-income States, etc. and disadvantages such as Not inclusion of Some Commodities in the GST Rate, Multiple GST in different States, No decision on the GST Taxation Rate, Loss to some States, etc in adoption of GST in India. This paper also suggests that adoption of GST in India will be beneficial for long term and increase in GDP.
CONTRAINDICAÇÕES PSICOLÓGICAS EM DOADORES CANDIDATOS A TRANSPLANTE RENAL INTERVIVOS: RELATOS DE CASOS
Authors: Sousa Bárbara Luiza Vieira da Fonseca , Sampaio Iago , Telles Maria Joana , Santos Pollyana Cristiane de Melo Santos , Cooper Keyla , Kohlsdorf Marina
Published: February 2025

Este artigo relata três casos de candidatos a transplante renal intervivos, acompanhados em um ambulatório de psicologia. São discutidas contraindicações psicossociais como transtornos psiquiátricos, pressão para doar e sentimentos ambivalentes. Conclui-se que a atuação da psicologia promove decisões conscientes e informadas sobre a doação de rim.
Palavras-chave: transplante renal; doadores vivos; contraindicações; psicologia; relatos de casos.
Abstract
This article reports on three cases of inter vivos kidney transplant candidates followed up in a psychology outpatient clinic. Psychosocial contraindications such as psychiatric disorders, pressure to donate and ambivalent feelings are discussed. This study concluded that the work of psychology promotes conscious and informed decisions about kidney donation.
Keywords: kidney transplantation; living donors; contraindications; psychology; case reports.
Resumen
Este artículo relata tres casos de candidatos a trasplante renal en vivo, acompañados en un ambulatorio de psicología. Se discuten contraindicaciones psicosociales, como: trastornos psiquiátricos, presión para donar y sentimientos ambivalentes. Se concluye que la actuación de la psicología promueve decisiones conscientes e informadas sobre la donación de riñón.
Palabras clave: trasplante renal; donantes vivos; contraindicaciones; psicología; casos reportados.
Ved Vyas Ki Itihas Drishti: Mahabharat k vishesh sambandh mein
Authors: Priyamvada Dr.
Published: February 2025

‘‘जो सवŊũ हैवह इसमŐउपİ̾थत है, परȶुजो इसमŐनही ंहैवह कही ंअɊũ नही ंहै।ʼʼ महाभारत की यह उİƅ इसकी सवŊũ
ʩापकता एवं िवˑृत कालखǷ को अवलोिकत करनेमŐसमथŊहै। यह एक उपजीʩ काʩ हैअथवा गाथा हैिजसमŐभूत भिवˈ और
वतŊमान की ऐितहािसक गितिविधयो ंका वणŊन है। सʁव महिषŊवेदʩास इस अलौिकक राजनैितक घटना के ŮȑƗ ūʼा रहेइसीिलए
इनकी अनुपम कृ ित मŐतǽालीन राजनैितक, धािमŊक सांˋृ ितक, पाįरवाįरक आिद अनेकानेक घटनाओंका ŢमबȠ अȯयन िमलता
हैजो इितहास के लƗणो ंको ŮदिशŊत कर इसेऐितहािसक कृ ित बनानेहेतुसमथŊहै। इसेइितहास, इितहासोȅम, िनŜƅ1 , धमŊशा˓,
अथŊशा˓ तथा मोƗशा˓ भी कहा गया है। इसेिलिपबȠ करनेका कायŊगणेश जी नेिकया। इसकी रचना मŐतीन वषŊका समय लगा।
महिषŊवेदʩास की सजगता का अȽाजा इसी बात सेलगाया जा सकता हैिक उɎो ंनेगणेश को ˙ʼ िनदőश िदया था िक वेिबना अथŊ
समझेएक शɨ भी न िलखŐ।2 वेदʩास नेअपनी रचना के बारेमŐकहा हैिक उɎो ंनेˢयं ŮȑƗ की भांित ǒान̊िʼ Ȫारा आिद से
अȶ तक देखकर इसकी रचना िकया। महाभारत की रचना मŐʩास जी नेवेदो ं, उपिनषदो ं, पुराणो ंतथा अɊ कई शा˓ो ंकी सहायता
ली थी।3
उɎो ंनेअपनेसमय की घटनाओं को ŮȑƗ देखकर उसेिवˑारपूवŊक यथावत् िलखा साथ ही एक इितहासकार की भांित उन
घटनाओं, राजाओं, राजवंशो ंआिद का भी उʟेख िकया जो उनके समय के पूवŊभूतकाल मŐिवȨमान थे। उन घटनाओंव चįरũो ंको
उɎो ंनेआƥान के Ŝप मŐŮˑुत िकया।