bluuebunny/crossref_metadata_2025 huggingface dataset:
Theory of the Unified Gravity: Sayed’s Quantum Gravity Force (SQGF) as a Function in Wavelength and Planck Length with Inevitability of Light Speed Violation
Authors: El-Mongy Sayed A.
Published: April 2023

Nothing by chance, everything was created by Allah (God). Quantum gravity (QG) is a hundred year unsolved puzzle and nagging mystery. This article introduces an innovative theory to describe quantum gravity by merging Newtonian, general relativity and quantum mechanics concepts. A unified formula and equations for quantifying and defining the quantum gravity was derived. It is called Sayed`s quantum gravity force (SQGF). It can be concluded that the gravity is a force inversely proportional to the square of the gravity quanta wavelength and distance; it is not only due to warping and curvature of the space-time fabric. The derived equation indicates that the gravity is also quantized. The Sayed`s gravitational constant (AsM) was given. The SQGF formula was validated and verified by check its units and calculations of the wavelengths in the micro and macroscopic scale. For the micro gravity force of 1µN (1 micro Newton), the wavelength was calculated. It was found to be in the measurable range of the electromagnetic spectrum. The quanta gravity wavelength of values 5.6026 x 10-9 m and 2.83457 x 10-13 m were found for Planck scale and electron-proton of H-atom respectively. A proposed approach to measure the relative gravity wavelengths is given. It can revolutionary be concluded that the speed of light is a variable. The violation of light speed is a must for the instantaneous nature of the gravity quanta and the entanglement phenomena.
Optimisation analysis of distribution network planning based on the IVIF-AHP method
Authors: Wang Chunyi , Yang Lichao , Zhang Xiaolei , Liang Rong , Li Hao , Wang Yanshuo
Published: April 2023

Distribution network planning is an important task in the process of power grid construction and development. Scientific and rational planning is the key factor for the economic construction and reliable operation of the power grid. Aiming at the difficulty in quantifying the weight of distribution network planning schemes, a comprehensive evaluation method of distribution network planning schemes based on the interval-valued intuitionistic fuzzy analytic hierarchy process method is proposed. First, a comprehensive evaluation index system is established from the four aspects of power supply, namely reliability, economy, power supply quality and safety of the distribution network. Then, a comprehensive evaluation method of electricity reliability optimised by entropy weight method is adopted by analytic hierarchy process, which considers both subjective situation and objective weighting. At the same time, the comprehensive weight of the aggregation of the criterion layer and the scheme layer is calculated. Finally, the link between the aggregation matrix and the index weights of the criterion layer is used to calculate the weights of the scheme layer so that they can be sorted out. The experimental results show that the effectiveness and feasibility of the planning and analysis indicators and evaluation methods of the method proposed in this paper are verified by a numerical example.
Simulation research on music feature recognition based on mobile big data and smart sensors
Authors: An Wen
Published: April 2023

With the increasing importance of music information retrieval, the construction of effective music recognition methods has gradually become one of the research focuses. The vocal map features of the collected music pronunciation signals are extracted. The research in this paper is primarily based on the basic physical characteristics of music notes; once these characteristics are identified, then they are mathematically extracted and analysed (voiceprint feature method), and a recognition model is established. On this basis, the process of adaptive separation and recognition of music signals is completed. Finally, the performance of different recognition types is verified and evaluated through experiments. The results show that the average accuracy rate of the modified algorithm within a certain range reaches 73.6%; additionally, the average accuracy rate is increased by 10.95% compared with the audio recognition based on Internet of Things (IoT) data, and is more accurate than the audio recognition method based on data collection, showing an improvement of 20.75%. This shows that the modified recognition algorithm adopted in the present research has stable and high accuracy for comprehensive music types with different characteristics. Finally, the identification method proposed in this paper shortens the time by 85.71% compared with the identification method of data collection, and shortens the identification time by 83.33% compared with the IoT identification method. This greatly improves the recognition of different musical feature types.
Visual analysis of the trend of mental health changes among Chinese college students in the context of the normalisation of the new crown epidemic
Authors: Zhang Liping
Published: April 2023

Public health events are sudden, public in nature and have serious social hazards. The COVID-19 outbreak coincided with the Lunar New Year, which had a direct or indirect impact on all areas of society. Previous studies related to emergencies have found that a considerable number of college students lacked experience in dealing with emergencies, were not emotionally stable enough, lacked analysis and decision-making ability, were easily suggestible and acted more impulsively. Therefore, in this paper, based on the existing actual information, combined with the awareness and understanding of college students’ mental health, and based on the existing research results, the Hopfield-mental health model is used as a theoretical basis to study the trend of changes in college students’ mental health. The results of the study show that 83.21% of the people are more concerned about the situation of this new crown pneumonia epidemic and they think that the new crown epidemic has seriously affected their living habits; 65.45% thought that this new crown pneumonia epidemic did not have any major impact on their school life. The five sources of psychological stress, including academic, employment, economic, interpersonal relationship and love, were calculated and analysed in the model, which showed that employment stress, academic stress and economic stress were the largest sources of psychological stress among college students in this new pneumonia epidemic, accounting for 89%, 81% and 93%, respectively. They were followed by interpersonal and romantic stress, with 31% and 52%, respectively.
Design and implementation of an integrated management system for discipline construction and postgraduate education in universities
Authors: Wang Chunxia
Published: April 2023

With the progress of computer technology, discipline construction, new management ideas, management modes and management technologies gradually penetrate into all aspects of information construction, which leads to the further improvement of the level of informationisation. To better realise the dual functions of discipline construction and comprehensive management of graduate education, the advantages of the Hopfield Network (HN) algorithm, which is easy to realise and improve information processing efficiency and programme maintenance, are brought into play. This paper conducts an in-depth study on the comprehensive management system of graduate education based on the HN algorithm. The technical feasibility of the integrated postgraduate education management system is 73%. The economic feasibility of the integrated graduate education management system is 68%, with other feasibility variables remaining unchanged. Moreover, the design of the integrated graduate education management system is more reasonable at 71%, which is much higher than the 29% for the traditional system.
Research on human resource management performance evaluation based on BP algorithm
Authors: Lv Rui
Published: April 2023

With economic globalisation and in the face of increasingly fierce market competition, enterprises must establish an evaluation mechanism that can promote the company’s development and motivate employees to improve performance in order to achieve the company’s strategic goals. In view of the characteristics and problems of enterprise performance appraisal, a performance evaluation method based on artificial neural network (ANN) technology is proposed. This study uses BP algorithm to comprehensively evaluate the performance of enterprises and construct an evaluation network. According to the statistics of 75 power companies in the province from 2018 to 2021, the training was carried out in batches, and the 10-fold cross-validation method was used to find the smallest optimisation value of the error term (average overall relative error) of the test set. The training set is set as 70% and the test set as 30%, and the termination condition is used to end the training process when the training error is <0.0001. This proves that the use of BP neural network for performance evaluation can effectively avoid the influence of subjective factors on the evaluation results, so as to establish a more objective comprehensive evaluation system.
Bridging Academic Gaps: How to Assist Underprepared Students whose Academic Background was Highly Suppressed by Covid-19?
Authors: Kheswa Bonginkosi Vincent , Kheswa Khayelihle , Sihlangu Sinenhlanhla Fortunate , Majola Siyabonga , Tsewu Ayabulela
Published: April 2023

The objectives of this study were to investigate the degree to which first-year students are underprepared for university physics due Covid-19 pandemic, and get insight on what could be the intervention strategies with which their conceptual gaps can be bridged by higher education institutions. This was achieved by conducting a qualitative study on a sample of 72 students who are enrolled in extended engineering programmes in a South African university. The collected categorical data was analyzed using descriptive statistics. The results of this study show that more than half of the respondents did not complete the matric physics syllabus and were extremely underprepared for their university physics lectures. In particular, they lack conceptual understanding of Newtonian mechanics. These students welcome the idea of being given lecture videos and/or in-person lectures/workshops, by the university, with which they could revise the matric syllabus before they start attending university physics classes. Moreover, the results reveal that the majority of students appreciate the coupling of the foundation physics and mainstream physics modules. The results further show that it could be more effective to have students simulating half of their physics experiments in a computer before they conduct them in a laboratory.
THE INFLUENCE OF STRONG-WILLED QUALITIES OF ADOLESCENTS ON THE ACHIEVEMENT OF SPORTS SUCCESS
Authors:   Bunin Yelets State University, Mezinov V.N. , Karyakin R.E. ,   Bunin Yelets State University
Published: April 2023

A characteristic feature of teenagers is their desire to achieve high sports results. They tend to set high goals for themselves. The most important quality of the “sporting character” is determined by strong-willed qualities. The process of forming strong-willed personality traits is very complex and proceeds throughout the evolutionary stages, but its strengthening is the main goal that needs to be achieved. The concept of personality quality in sports reflects the result of the athlete’s goal achievement process, in which principles, values and social norms encourage them to act consistently. The will to win can be defined as a path to achieving personal mastery and success in sport. The purpose of the study is to identify and systematize the prevailing strong-willed qualities of the personality of adolescents and to identify their influence on achieving sports success. The research base is International Gymnasium “Skolkovo”, Moscow. The sample is 124 students from 12 to 14. The empirical research methods are the study and generalization of pedagogical experience on the problem of the research, questionnaires, interviewing. The study showed a significant positive relationship between strong-willed qualities, motivation and achievement of sports success. We have identified the following character traits that allow teenagers to get high sporting achievements: ambition, resilience, stress resistance, masculinity, discipline, dedication, conscientiousness, perseverance, purposefulness, responsibility. The upbringing and development of strong-willed qualities of young athletes is based on general rules: it is necessary to prepare young athletes for athletic excellence, providing optimal, stable results, improving both physical conditions and technical, perceptual and emotional aspects of training; to set specific and measurable goals individually for each athlete; there should be feedback on the fulfillment of goals; a combination of theoretical and practical training is a very effective method of teaching motor or perceptual skills in sport in changing conditions; it is necessary to constantly achieve results in training and evaluate them. The analysis of the results of the study helps to clarify the relationship between personality traits, involvement in sport and sports success. The success or failure of athletes depends on a combination of many factors: physical, tactical, technical and psychological. Therefore, there is a need for a holistic approach to the development of adolescent athletes. To do this, it is necessary to create optimal conditions for holistic development through a combination of sports and education.
Refugee Protection in Multi-level Governance Regimes: A Case for Kenya and Indonesia
Authors: Yatani Vincent G.
Published: April 2023

In Indonesia, The Presidential Regulation No. 125 of 2016 concerning the management of asylum seekers, signed by President Joko Widodo on the last day of 2016, formalizes the role of sub-national units in refugee management, including the provision of appropriate, non-custodial accommodation. While in Kenya, the recently enacted Refugee Act of 2021 alludes to the engagement of the County Governments in Refugee protection. Within the context of the legal framework of these two countries, this article analyses the place of refugees in a multi-layered governance system through a comparative appraisal of local government structures in the selected States. The Article compares forms of decentralization adopted in these two refugee-hosting countries with the primary aim of establishing local government formation responsive to asylum seekers' plight.  The research finds a novelty that involving local governments in refugee protection is a crucial step toward the effective and sustainable management of displaced populations. However, for it to be effective, it must be supported by adequate resources, clear guidelines, and a strong institutional capacity.
GROWTH AND PRODUCTION OF TWO JOB’S TEARS CULTIVARS (Coix lacrima jobi-L.) AT VARIOUS DOSES OF NPK COMPOUND FERTILIZER (16:16:16)
Authors: Ramadhan Nugraha
Published: April 2023

Indonesia has the potential to develop alternative food sources, one of the cereal crops that has the potential and prospects to be developed is job's tears (Coix lacrima-jobi L.). Efforts that can be made to increase job's tears production are variety selection, proper cultivation techniques, and favorable environmental conditions. Fertilization is one of the most important factors that need to be considered in plant cultivation techniques. This research was conducted in Padang city, West Sumatera. The research was factorial in the form of a complete random design. The job’s tears cultivars used in this riset were Pulut and Batu. The purpose of this study was to determine the effect of NPK fertilizer on growth and yields of two job’s tears cultivars. NPK fertilizer dosage treatment in this study consisted of : 0 kg/hectare, 100 kg/hectare, 200 kg/hectare, and 300 kg/hectare. The results showed that there was no interaction between NPK fertilizer and two job’s tears cultivars. Pulut showed the highest mean values on growth variables (plant height, leaf length, and stem diameter), but Batu showed the highest mean values on yield variables (seed weight / plant). While the best dose of NPK fertilizer to increase growth and yield is 300 kg/hectare.
UMA ANÁLISE DOS PRINCIPAIS DIAGNÓSTICOS DE SARS-COV-2 DISPONÍVEIS NO BRASIL: UMA REVISÃO DE LITERATURA
Authors: Da Silva Mayra Deyse Hirt , Ferrari Idalina Cristina , Pires Maria Aparecida dos Santos , Da Silva Éderson Rodrigo Alves , Kakuta Elaine , De Barros Marcio Eduardo , Negrão Fábio Juliano
Published: April 2023

Introdução: Com a emergência do SARS-CoV-2 foi disponibilizado uma grande quantidade de ferramentas de diagnóstico. Neste contexto, a falta de vacina, de tratamento e o grande número de casos graves e morte, possibilitou a aprovação emergencial de diversos testes, que ainda necessitam de estudos populacionais para seu registro definitivo. Objetivo: Realizar uma revisão de literatura para avaliar as metodologias de diagnóstico disponíveis no Brasil, de acordo com a realidade local de saúde, explorando o momento epidemiológico a complexidade do teste e a finalidade da sua aplicação. Metodologia: Trata-se de um estudo bibliográfico, descritivo do tipo revisão de literatura. Foram utilizadas as seguintes bases de dados científicos para buscas: PUBMED, MEDLINE, LILACS E COCHRANE LIBRARY, através de descritores selecionados na plataforma DECS. Resultados: O cenário de diversos ensaios, baseados em diferentes metodologias, como os testes baseados em RNA viral, em detecção de antígenos virais ou de anticorpos, associados ao conhecimento da história natural do vírus, possibilita uma análise crítica do melhor diagnóstico de acordo com a clínica do paciente, os epidemiológicos, o objetivo do diagnóstico e a acurácia do ensaio. Atualmente, há mudança no padrão imunológico da população e a descrição de tipos e subtipos de SARS-CoV-2 com mudanças gênicas, que podem levar a mudanças na acurácia diagnóstica ou a re-emergência em surtos de doença grave. Conclusão: Ainda é incerto o caminho evolutivo da história natural da Covid-19 e os ensaios diagnósticos estão em diferentes estágios de desenvolvimento, validação e produção e cada tipo de teste tem suas próprias vantagens e desvantagens distintas inerentes a plataforma tecnológica de origem e uma combinação de tipos de testes usados em momentos diferentes pode ser útil para a condução clínica dos pacientes e no controle da pandemia por SARS-CoV-2.
CONSERVAÇÃO DE PEÇAS ANATÔMICAS EM CLORETO DE SÓDIO: UM ESTUDO COM PRODUTO DE FECUNDAÇÃO
Authors: Travagim Marcela Fernandes , Travagim Gabrieli Fernandes , Labegalini Célia Maria Gomes , Bohn Franciele Mara Lucca Zanardo , Volpato Hélito
Published: April 2023

Introdução: Os materiais de origem humana geralmente são conservados em formaldeído, para possibilitar o estudo da anatomia humana, tal conservante possui baixo custo e boa fixação, contudo é toxico. Diante do exposto é necessário, o estudo de outros métodos de conservação, menos prejudiciais, como a solução de NaCl 30%. Objetivo: Comparar a conservação de peças anatômicas em solução de NaCl à 30% e formaldeído a 10%. Método: Pesquisa experimental, exploratória e descritiva, realizada com dois produtos de abortamento, no laboratório de anatomia de uma universidade pública, no estado do Paraná/BR. Foi realizada fixação em solução de formol 10%, em seguida uma amostra foi lavado em água corrente e armazenado em solução de NaCl à 30%. Após 6 meses da conservação em solução salina, foram coletadas amostras, estas foram submetidas a análise de crescimento bacteriano. Avaliou-se tonalidade e turgor cutâneo, odor e peso, bem como crescimento bacteriano. O estudo seguiu os preceitos éticos (CAAE: 53740121.9.0000.9247). Resultados: Foram realizadas observações após 24h, 7, 30, 60, 90 e 180 dias. O feto em solução de NaCl não possui odor, e diminuição do turgor da pele. Ambas a amostras não apresentaram crescimento bacteriano. Considerações finais: A solução de NaCl a 30% desidrata a pele, mas não altera significativamente a forma e estrutura, ainda não possui odor e nem toxicidade, o que garante benefícios a saúde de quem os manipula, bem como tal concentração de NaCl inibe de forma efetiva o crescimento bacteriano nos tecidos e na própria solução, se demostrando eficaz na conservação.
UM ESTUDO DA PREVALÊNCIA E DA CARACTERIZAÇÃO DA MORTALIDADE EM CRIANÇAS E ADOLESCENTES POR LEUCEMIA NO NORDESTE DO BRASIL
Authors: Carvalho Perla Maria Antão de Alencar , Frota Mirna Albuquerque , Maranhão Thatiana Araújo , Daniele Thiago Medeiros da Costa , Pinto Nilson Vieira
Published: April 2023

Objetivo: Caracterizar a prevalência da mortalidade por leucemias em crianças e adolescentes no Nordeste Brasileiro e sua relação com determinantes sociais da saúde no período de 2008 a 2018. Método: A pesquisa foi um estudo epidemiológico, do tipo ecológico, cujas unidades de análise de área foram os 9 (nove) estados brasileiros da Região Nordeste. Os dados desse estudo foram do tipo secundário, obtidos através do Departamento de Informática do Sistema Único de Saúde (DATASUS), provenientes do Sistema de Informação sobre Mortalidade (SIM). Para esta investigação elegeu-se, crianças e adolescentes, com faixa etária entre 0 (zero) e 19 (dezenove) anos, com óbitos no período de 2008 a 2018, cujo, a leucemia foi a causa básica mencionada na Declaração de Óbito (DO) por meios de códigos conforme a 10o Classificação Internacional de Doenças (CID-10). Resultados: foram registrados 3.025 óbitos por leucemias durante o período analisado. O CID-91 foi o primeiro colocado em número de óbitos (54,9%), em segundo lugar, CID-92 apresentando 30% das notificações e em seguida CID-95 (14,6%), CID-93 (0,3%), CID-94 (0,2%) dos óbitos. Sendo que desses, 57,6% foram do sexo masculino e 42,4% do sexo feminino. A faixa etária mais prevalente foi de 15 a 19 anos de idade (26,1%). A cor parda foi a mais autodeclarada (58,0%). O estado da Bahia foi o mais acometido por óbitos durante o período. Conclusão: O CID-91 teve maior prevalência entre óbitos notificados, que os maiores números de óbitos foram no sexo masculino com faixa etária dos adolescentes entre 15 e 19 anos e de cor parda, e que a mortalidade por leucemia ainda é um sério problema de saúde pública que pode ser reparado com medidas de prevenção e de promoção em saúde.
PERFIL HEMATOLÓGICO DE IDOSO COM DENGUE INTERNADO EM UNIDADE DE TERAPIA INTENSIVA
Authors: De Souza Jhenifer Mikaelly Teodoro , Zama Joyce Harumi , Pereira Luana Gabriela , Vieira Rafael Jardim , Da Silva Isabella Carolina Podadeiro , Pereira Wellington Carlos da Silva , Vieira Suellen Laís Vicentino
Published: April 2023

Introdução: A dengue é considerada a arbovirose mais comum no mundo, sendo hoje um problema crescente de saúde pública. Objetivo: Por ser considerada de alta prevalência, foi realizada a avaliação hematológica de um paciente hospitalizado na Unidade de Terapia Intensiva na cidade de Umuarama-PR. Metodologia: Tratou-se de um estudo descritivo retrospectivo, do qual foram analisados os resultados de hemogramas obtidos por um laboratório local, considerando que o paciente constava como sorologia positiva para NS1. Foram avaliados 09 laudos de hemograma emitidos durantes 5 dias de internamento do paciente. Os resultados foram comparados entre os laudos e com os valores de referência disponibilizados pelo próprio laudo. Resultados: Com base na análise dos hemogramas pode-se verificar a redução do hematócrito em 33,33%, macrocitose em 88,9%, leucopenia em 27,3%, trombocitopenia em 27,3%. Conclusão: Conclui-se que através dos laudos avaliados foram encontrados plaquetopenia, leucopenia, linfocitopenia, eosinopenia, neutropenia, monocitopenia. Evidenciando o hemograma como uma ferramenta laboratorial de grande auxílio na avaliação do paciente.
Dynamic Analysis of Bidirectional Solar Arrays with Flexible Panels and Clearance Joints
Authors: Shen Yingyong , Gao Jingbo , Wang Cong , Tan Shiyu , Zhang Dehua , Li Yuanyuan
Published: April 2023

The dynamic characteristics of a two-step deployable bidirectional solar array system with flexible panels and clearance joints are studied in this paper. Driving mechanisms, closed cable loop configurations, and latch mechanisms are considered in this system where normal contact force is established using a nonlinear spring damping model and the friction effect is determined by a modified Coulomb friction model. With the simulation strategy of activating different constraint states and applying latch torques, the multiple deployment and locking processes of the system are implemented. The results indicate that the second locking causes obvious vibration on the dynamic responses of the yoke and main panels and leads to a complex bidirectional vibration of the main panel connected to the side clearance joints. The equivalent suspension damping property produced by the coupling of the flexibility and clearances can reduce the vibration of the deployable components. Moreover, the attitude and orbital motion results reveal the effect of different deployment methods of the system on the spacecraft attitude. Finally, the trajectories of journal centers and contact forces are analyzed to indicate the foundation of the dynamic behavior of the system.
Large-Eddy Simulation of Wake Vortices at Tokyo/Haneda International Airport
Authors: Misaka Takashi , Yoshimura Ryoichi , Obayashi Shigeru , Kikuchi Ryota
Published: April 2023

A large-eddy simulation (LES) of wake vortices in ground effect is conducted under the influence of airport hangar buildings to investigate the airport-specific behavior of wake vortices. We consider a landing at Tokyo/Haneda International Airport in Japan, where a wake of hangar buildings covers a landing path and touchdown zone under particular wind conditions. We combine an LES code and the Weather Research and Forecasting numerical weather prediction model to retrieve realistic wind conditions around the airport. The behavior of wake vortices is then investigated in the retrieved wind field using the adaptive mesh capability of the LES code for capturing the tiny vortex core of the wake vortex. At the crosswind on the order of a vortex descent speed, the hangar wake reduces the crosswind near the runway, enhancing the windward vortex’s rebound. The effect is alleviated by doubling the crosswind to twice the vortex descent speed. On the other hand, the wind fluctuations caused by the hangar buildings only slightly affect the wake vortex decay.
Fault Detection and Diagnosis in Spacecraft Electrical Power Systems
Authors: Carbone Marc A. , Loparo Kenneth A.
Published: April 2023

The ability to accurately identify and isolate failures in the electrical power system (EPS) is critical to ensure the reliability of spacecraft. This paper proposes a novel solution to the problem of fault detection and diagnosis in direct current (DC) electric power systems for spacecraft. Autonomous operation becomes essential during deep space missions that lack the ability to monitor and control the spacecraft from ground locations. The current state of EPS fault supervision is insufficient to guarantee highly reliable operation. To solve this issue, a combination of model-based and knowledge-based techniques are used in a hierarchical framework to improve the diagnostic performance of the system. Noise, disturbances, and modeling errors are considered in the design of the fault detection system. Practical considerations related to spacecraft flight hardware and software are accounted for in the system design for flight applications. To assess the functionality of the design, a wide array of failures are simulated in a series of experiments. The experiments showed that the technique improved the capability of the autonomous system by increasing the number of fault types diagnosed. The significance of this study is to provide a framework capable of advanced diagnostics of an EPS with little to no interaction from human operators.
A Closed-Form Correction for the Spalart–Allmaras Turbulence Model for Separated Flows
Authors: Jäckel Florian
Published: April 2023

The field inversion and machine learning (FIML) approach is leveraged to obtain a closed-form correction for the Spalart–Allmaras turbulence model to improve predictions of separated flows. Based on field inversion results obtained using the first-generation FIML Classic approach, a simple and compact closed-form expression is chosen to be used as correction model. The thus obtained correction model is optimized using the second-generation FIML Direct approach. Training and validation cases consist of a selection of airfoils in a wide range of flow conditions as well as the flat plate. The correction model and results for the training and validation cases obtained with the augmented turbulence model are presented, demonstrating the improved flow predictions.
Analytical Corrections for Acoustic Transmission in Kevlar-Walled Wind Tunnels
Authors: Fischer Andreas , Lylloff Oliver , Fernandez Grande Efren , Bak Christian
Published: April 2023

Kevlar-walled aeroacoustic wind tunnels have become important research facilities to evaluate low-noise wind turbine designs. In this paper a semi-analytical Green’s function for the transmission of sound through Kevlar walls and shear layers was developed in order to provide accurate acoustic measurements at high flow speeds. The semi-analytical Green’s function was evaluated experimentally with a monopole sound source. It was possible to find the correct source location when the Green’s function was used to formulate the steering vectors for the beamforming technique. The corrected steering vectors provided a much better source level estimation than if a free-field Green’s function was used to formulated the steering vectors, but there was a systematic overcorrection at low frequencies and an undercorrection at high frequencies. The analytical transmission loss was very sensitive to the convection velocity of the vorticity shed at the membrane apertures, which in turn depended on the aerodynamic loading of the Kevlar walls. It is likely that further fine-tuning of the formula of the convection velocity will reduce the systematic error. The experimental setup to validate the Green’s function could be improved if aerodynamic loading was applied to the walls.
Patriotism development in Russia: educational dimension
Authors:   State Fire Academy of EMERCOM of Russia, DYACHENKO N.V.
Published: April 2023

The article considers the actual problem of patriotism development in various historical periods of Russian history. Relying on experience of the past, the author shows modern ways of patriotism theme practical implementation in the educational process. The article has practical significance both for senior students, postgraduates and for teachers, educators at schools and educational organizations at all stages of education. The material of the article will help teachers to implement scientific research results into practical educational activities, creating conditions for patriotic feelings growth among the younger generation.
Socio-cultural adaptation to the conditions of a departmental university and psychological features of teaching foreign citizens of the preparatory faculty and junior courses
Authors:   State Fire Academy of EMERCOM of Russia, AKIMOVA V.V. , ALIULLINA S.A. ,   State Fire Academy of EMERCOM of Russia
Published: April 2023

The authors of the article discuss actual problems of socio-cultural adaptation to the conditions of a departmental university and psychological features of teaching students of the preparatory faculty and junior courses a foreign (Russian) language, taking into account national linguistic and cultural characteristics. The authors describe the features of foreign students condition at the begining stages of their educational activities, offer relevant methods of psychological and educational-methodical work with them.
Psychological training as positive thinking forming method in educational establishment
Authors:   State Fire Academy of EMERCOM of Russia, GUSEV A.S. , KISELEVA E.A. ,   State Fire Academy of EMERCOM of Russia, KUZMINA O.A. ,   State Fire Academy of EMERCOM of Russia
Published: April 2023

The development of positive thinking is an important factor for the effectiveness of firefighters’ and rescuers’ activities and professional health. For this reason we use some developments of positive psychology in the learning process, for example, training positive thinking formation. The purpose of the study was to determine the possibilities of psychological training for forming and developing positive thinking among cadets. The subject, object, hypothesis, tasks and methods of the research were defined, and as a result, the advantages of psychological training were identified. Thus, its practical orientation allowed the participants not only to discuss techniques and algorithms of work, but also to evaluate their effectiveness in practice.
EVALUATIONS OF DIFFERENT MODELS FOR PREDICTING MERCHANTABLE VOLUME OF PINUS BRUTIA TEN. IN DUHOK GOVERNORATE
Authors: Abdulqader Hanaa Naef , Obeyed Mohammed Hadaet
Published: April 2023

This study was initiated with the main objective of evaluating the prediction power of previously 24 published models in the literature, developed for estimating the merchantable volume of natural stands of Pinus brutia Ten. The estimation was based on measuring the breast diameter (D), tree height (h), and absolute form quotient (F) of 120 pine trees (Pinus brutia Ten.) from 2 natural stands situated to the east of Duhok governorate. Six indicators of Fit test statistics, namely Adjusted coefficient of determination (R2- adj.) standard error of estimate (SEE), mean absolute error (MAE), Durbin-Watson statistic (D-W), p-value, and mean biased error (Bias) were used to test the performance of the applied models. The result from the centroid model was considered a reference method for the evaluation during this study. The results indicated that the square root –y logarithmic-x offered the highest performance followed by the double square root model.  The square root –y logarithmic-x (equation 11) attributed more than 90% of the variation in merchantable volume to variations in D, h, and F. Furthermore, the mean absolute error of prediction of this model was 0.0434. According to this study, the mean stem form of Pinus brutia trees is (0.64), which signifies quadratic paraboloid.
Şiddetle Mücadelede Hekimin Rolü; Trakya Tıp Fakültesi’nden Öğrenci Görüşlerinin Kalitatif Değerlendirilmesi
Authors: ÖNAL F. Gülsüm
Published: April 2023

Amaç: Tıp Fakültesi 5. Sınıf öğrencilerinin, şiddetle mücadelede hekimin rolüne ve kırılgan grupların haklarına dair görüşlerini, tıp etiği bakımından değerlendirmektir. Çalışmanın aynı zamanda tıp eğitimi müfredatına, savunmasız grupların sağlık bakımına öğrencilerin katılımına ve dolayısıyla şiddetle mücadeleye katkıda bulunacağı düşünülmektedir.

Yöntem: Retrospektif olarak tasarlanan araştırmanın evrenini 2021-2022 yılında 5. sınıf öğrencilerine verilen “Şiddetle Mücadelede Hekimin Biyoetik Sorumluluğu” adlı ders kapsamında öğrencilerin hazırladıkları ödevler oluşturmaktadır. Çalışma verileri, gerekli izinler alınarak dersten sorumlu olan öğretim üyesinin/ komisyonun eğitim arşivinde bulunan ödev metinlerinden elde edilmiştir. 69 adet ödev metni kalitatif olarak değerlendirilmiş, tematik analiz yöntemi kullanılarak analiz edilmiştir. Analize başlamadan önce Etik Kurul onay alınmıştır.

Bulgular: Öğrenci görüşleri “Davranışsal Sosyal Beşeri Bilimler (DSBB)” ve “Hekimin ve Sağlık Sisteminin Rolü” bağlamlarında sınıflanmıştır. DSSB bağlamında öğrenciler kadın hakları, eşitlik, ataerkillik, devletin savunuculuk rolü, bireysel faktörler, incinebilir gruplar ve kesişimsellik konularında görüşler dile getirmiştir. Bu görüşler “İnsan Hakları”, “Toplumsal Ayrımcılık”, “Kamu Yararı”, “Çevre Etiği” ana temalarında değerlendirilmiştir.

Şiddetle Mücadelede Hekimin ve Sağlık Sisteminin Rolü bağlamında ise öğrenciler hekim sorumluluğunun çok yönlü doğasını dile getirmiştir. Öğrenciler, hastaya yarar sağlama/zarar vermeme, hekim hasta iletişimi, hekime güven, hasta mahremiyetine saygı, incinebilir grupların hakları, doğaya saygı, sağlık kurumlarının sorumlulukları ve başta meslek içi eğitimler olmak üzere şiddetle baş etmek için gerekli önlemler konularında görüş ve beklentiler ifade etmiştir. Bu kapsamdaki görüşler “Hekim-Hasta iletişimi”, “Bildirim Zorunluluğu”, “Nitelikli Sağlık Hizmeti” ana temalarında ele alınmıştır.

Sonuç: Çalışmamızdaki öğrencilerin, sağlık ve şiddet kavramlarını bütünsel ve etkileşimli ele alarak, ayrımcılığa karşı insan hakları temelinde düşündükleri ve literatürle uyumlu biçimde şiddetle mücadelede hekim rolünün bilişsel düzeyde farkında oldukları görülmüştür. Ancak öğrencilerin neredeyse tümünün bilgisini uygulayamadığı ve beceri kazanması gerektiği, bir kısım öğrencinin ise haklar bağlamında bilgi açığı da olduğu görülmüştür. Bunlar ışığında çalışmanın sonuçları ve öneriler şöyle sıralanabilir:

•Öğrencilerin konuya daha çok zaman ayrılmasını istedikleri saptanmış olup, müfredatta konuya ayrılan süre gözden geçirilebilir.

•Müfredatın başta şiddetle mücadelenin daha karmaşık konuları olmak üzere, yeni eğitim stratejileriyle güncellenmesine ihtiyaç vardır.

•Öğrencilerin sağlık sisteminden beklentileri olan; nitelikli sağlık hizmetinin sağlanmasına ve tüm savunmasız grupları kapsayan, hekimler için yol gösterici yönergeler ve kılavuzlara gereksinim olduğu görülmektedir.
Tıp Fakültesi Öğrencilerinin Bireysel ve Sosyal Sorumluluk Algılarının Sosyal Sorumluluk Dersine Yönelik Görüşlerine Etkisinin Değerlendirilmesi
Authors: SARIAKÇALI Nuriye , AĞADAYI Ezgi , EGİLMEZ Hatice
Published: April 2023

Amaç: Bu çalışmada, 2021-2022 Eğitim Öğretim yılı içerisinde sosyal sorumluluk dersi alan tıp fakültesi öğrencilerinin bireysel ve sosyal sorumluluk algılarının, sosyal sorumluluk dersine yönelik etkisinin değerlendirilmesi amaçlanmıştır.

Yöntem: Sivas Cumhuriyet Üniversitesi Tıp Fakültesi Dönem I öğrencilerinin dahil olduğu tanımlayıcı bir çalışmadır. Fakültemizde sosyal sorumluluk proje dersi Dönem 1 eğitim programında yürütülmektedir. Araştırmada kullanılan veri toplama aracında, öğrencilerin tanımlayıcı özellikleri, derse yönelik görüşleri ve bu görüşleri etkileyen faktörler sorgulanmıştır. Öğrencilerin bireysel ve sosyal sorumluluk algılarını belirlemek amacıyla “Bireysel ve Sosyal Sorumluluk Ölçeği” kullanılmıştır. Verilerin değerlendirmesi SPSS programı ile yapılmış olup, bağımsız örneklem T testi ve tek yönlü varyans analizi testleri uygulanmıştır.

Bulgular: Dersi alan 240 öğrenciden 162’si araştırmaya katılmaya gönüllü olmuştur (katılım oranı %67,5). Öğrencilerin %69,8’i sosyal sorumluluk derslerinin ve yürütülen projelerin gerekli olduğuna inandıklarını belirtmişlerdir. Öğrencilerin %4,3’ü sosyal sorumluluk derslerinde yürüttükleri projelerin, topluma faydası olmadığını, %16,7’si kısmen faydalı olduğunu, %79,0’u ise topluma fayda sağladığını düşündüklerini ifade etmişlerdir. Öğrencilerin %69,8’i derslere ve projedeki çalışmalara aktif olarak katıldıklarını belirtmişlerdir. Derse aktif katıldığını belirtenlerin not ortalaması (3,3±1,6), kısmen aktif olanlardan (1,9±1,6) ya da pasif katıldığını (0,7±1,1) belirtenlerden anlamlı derecede daha yüksek bulunmuştur (p0,05). Türk öğrencilerin (68,0±12,1) sosyal sorumluluk 2ölçek puanı yabancı öğrencilere (55,0±20,7) göre anlamlı derecede daha yüksek olarak saptanmıştır (p
Note de recherche. Difficultés, enjeux et bénéfices du récit ethnographique au sein d’une institution de réinsertion familiale (Liège, Belgique)
Authors: Simon Charlotte
Published: April 2023

Utiliser le terme restitution en anthropologie pour désigner le processus par lequel le chercheur expose ses hypothèses, ses réflexions et, à terme, son analyse aux acteurs concernés pose problème au niveau sémantique. En effet, l’anthropologue ne restitue pas quelque chose qu’il aurait volé, mais partage ses découvertes sur le terrain avec les personnes qu’il a rencontrées au fil de celui-ci. C’est pourquoi je vais privilégier l’expression « récit d’enquête » (Bizeuil 1998) ou « récit ethnographique ». Au travers de cet article, j’exposerai une de mes expériences de terrain mené dans le cadre de mon parcours académique, en me focalisant plus particulièrement sur les récits d’enquêtes que j’ai menés. Je décline cette expression au pluriel car j’ai réalisé plusieurs récits ethnographiques intermédiaires, avec les personnes travaillant au sein d’une institution de Réinsertion Familiale (RF), ainsi qu’avec le directeur de l’institution à Liège (Belgique). De plus, j’ai réalisé mon récit ethnographique final en deux temps. Le premier, sous forme écrite, était une adaptation de mon rapport de stage (demandé dans le cadre de mon cursus). Il n’était en effet pas possible de transmettre le document tel quel. Certains termes et concepts anthropologiques devaient être explicités. De plus, je devais nuancer, reformuler quelques-uns de mes propos afin de ne pas blesser ou « braquer » certains membres du RF. Je ne voulais pas prendre le risque de réaliser mon second récit ethnographique final dans un climat tendu. Ce dernier fut réalisé sous forme d’un exposé suivi d’une discussion avec les membres de l’institution. J’ai ainsi pu recueillir leurs ressentis de vive voix.
D-Tags Design by Combining Bluetooth Router, IoT, and Mobile Phone to Track Personal Items
Authors: Farouq Ardiansyah Al , Fathurrahman Rizal
Published: April 2023

Losing personal items such as a wallet or room keys is disturbing. Problems arise when clues to find the item are lacking or even non-existent. Of one hundred-two people who filled out the questionnaire about how often losing their belongings, 76% had experienced it. Because of that, it must be hard to remember where the last they put the stuff. Therefore people need tools that can help them easily find their item with a transmitter and connect to a mobile phone. Previous research showed that the transmitter with a frequency system had a detection distance of only 5 meters. From this weakness, the authors propose the development of a tracking items device that combines an Internet of Things-based Bluetooth transmitter and receiver system approach called D-Tags by combining Bluetooth routers, IoT, and mobile phones. The system is designed for both indoor and outdoor areas. Bluetooth testing allows the device to detect items up to 7.43 meters without wall obstacles. The system provided location information such as Living Room or Bedroom and the coordinates when outside the room. Regarding time, a single detection item is faster in the range of 15.13 seconds to 15.60 seconds than searching for two things simultaneously. From the tracking radius of the outdoor area, the device can track items up to 31.8 meters from the last item's position. All information tracking history can be seen on the web application. The experiment results prove that D-Tags can be used to track items by indicating their location and with a relatively short search duration.
Enhanced Coherence by Coupling Spins through a Delocalized π-System: Vanadyl Porphyrin Dimers
Authors: Pozo Iago , Huang Zhijie , Lombardi Federico , Alexandropoulos Dimitris , Kong Fanmiao , Slota Michael , Deng Jie-Ren , Stawski Wojciech , Horton Peter , Coles Simon , Myers William , Bogani Lapo , Anderson Harry
Published: April 2023

Vanadium(IV) magnetic centers are prime candidates as molecular quantum units. One longstanding question is how to obtain a scaffold that connects multiple centers and allows two communication modalities: magnetic and electronic. We have synthesized and studied a selection of vanadyl porphyrin dimers, as models of the most synthetically accessible linear porphyrin arrays. We show that a strongly π-conjugated backbone places the magnetic system in the strong coupling regime and protects the quantum coherence against electron pair flip-flop processes at low temperatures (<10 K). This result is a fundamental step towards the design of molecular materials for single-molecule devices controlled by microwaves with electrical readout.
Photochemically Driven Nickel-Catalyzed Carboxylative Buchwald Hartwig Amination: Scope and Mechanism
Authors: Abid Seifallah , Quirion Kevin P. , Yang Yi , Tang Renhe , Mai Binh Khanh , Liu Peng , Tlili Anis
Published: April 2023

Herein we disclosed an unprecedented photochemically driven nickel-catalyzed carboxylative Buchwald Hartwig amination to access a wide range of aryl carbamate derivatives. This reaction is performed under mild condition of temperature and atmospheric pressure of CO2 starting from commercially available (hetero)aryl iodides/bromides derivatives and alkyl amines preventing the formation of hazardous and/or toxic waste. Moreover, preliminary mechanistic investigation including stochiometric experiments as well as DFT calculations allows us to shed the light on the reaction mechanism.
Synthesis of Highly Functionalized Diarylamines through an N-, C-Cascade Reaction via Ammonium Salts
Authors: Linde Erika , Olofsson Berit
Published: April 2023

The diarylation and skeletal diversification of unstrained cyclic amines was exploited to expand and modify the favorable properties of this important substrate class with pivotal roles in drug discovery. Cyclic amines were employed in the synthesis of a novel class of amino-substituted diaryliodonium salts, which were converted to highly functionalized diarylamines through an atom-efficient one-pot N-arylation/ ring opening reaction with external nucleophiles. The reaction proceeds through the in situ formation of a diarylammonium intermediate that undergoes a nucleophilic ring opening by cleavage of the strong C-N bond. A wide variety of diarylamines was obtained through introduction of two different aryl groups of varied electronics, and the retained iodo-substituent enables downfield diversifications of the products. More than 20 nucleophiles, including amines, phenols, carboxylic acids, thiols and halides, were alkylated with high functional group tolerance, and the strategy could be utilized in late-stage functionalization of natural products and pharmaceuticals.
Improving efficiency and sustainability of chitin bioconversion through a combination of Streptomyces secretomes and mechanical-milling
Authors: Duhsaki Lal , Mukherjee Saumashish , Madhuprakash Jogi
Published: April 2023

Chitin, particularly α-chitin, is the most abundant and highly recalcitrant form, fortified by an intricate network of hydrogen bonds. Efficient valorization of α-chitin requires a mild pre-treatment and enzymatic hydrolysis. Streptomyces spp. secrete chitin-active CAZymes that can efficiently tackle the recalcitrant problem of chitin biomass. To better understand the potential of Streptomyces spp., a comparative analysis was performed between the novel isolate, Streptomyces sp. UH6 and the well-known chitin degraders, S. coelicolor and S. griseus. Growth studies and FE-SEM analysis revealed that all three Streptomyces spp. could utilize and degrade both α- and β-chitin. Zymogram analysis showed expression of 5-7 chitinases in the secretomes of Streptomyces strains. The chitin-active-secretomes produced by Streptomyces sp. UH6 and S. griseus were optimally active at acidic pH (pH 4.0 and 5.0) and 50°C. Time-course degradation of α- and β-chitin with the secretomes generated N-acetyl-D-glucosamine (GlcNAc) and N,N-diacetylchitobiose [(GlcNAc)2] as the predominant products. Further, the highly crystalline α-chitin was subjected to pre-treatment by ball-milling, which reduced the crystallinity from 88% to 56.6% and increased the BET surface area by 3-folds. Of note, the activity of all three Streptomyces secretomes was improved by a mild pre-treatment, while Streptomyces sp. UH6 secretome displayed improved GlcNAc and (GlcNAc)2 yields by 14.4 and 9.6-folds, respectively. Overall, our results suggest that the Streptomyces chitin-active-secretomes, particularly Streptomyces sp. UH6, can be deployed for efficient valorization of chitin biomass and to establish an economically feasible and eco-friendly process for valorizing highly recalcitrant α-chitin.