bluuebunny/crossref_metadata_2025 huggingface dataset:
Factor analysis for effective factors in group work enrichment in sport
Authors: Devin Hassan Fahim , Bidel Toktam , Ghasabi Hanieh
Published: January 2022

In this descriptive-analytical study with factor analytical approach, the goal was to identity and prioritize effective factors in group work enrichment in sport. For this purpose a survey of 63 experts from physical education department of KHorasan Razavi province (who made up 84% of statistical population ) was conducted to generate response to researchers made questionnaire with 35 questions in 7 factors with factor load of each one equal or more than the base (0/45) and coefficient alpha value for reliability of (a=0/91). Data was analyzed using confirmative factor analysis (KMO,PCA), sample,t-test and friedman test. The findings of the study revealed that all the factors have significant effect on group work enrichment. Leadership style had the first priorty followed by personality traits, reward and punishment system had the least priority.
Facile Preparation of Mesoporous γ-Alumina Nanoparticles with High-Surface-Area via Sol-Gel Method and their Efficiency for the Removal of Lead from Aqueous Solution
Authors: Siahpoosh Seyed Mahdi , Salahi Esmaeil , Hessari Fereidoun Alikhani , Mobasherpour Imam
Published: January 2022

In the present investigation, γ-alumina nanoparticles with high specific surface area (351 m2/g) and relatively narrow pore size distribution was prepared using sol-gel method in the presence of aluminum isopropoxide as an aluminum precursor, distilled water, acetic acid as hydrolysis rate controller and tert-butanol as solvent. The calcined γ-alumina nanoparticles were characterized using X-ray diffractometer (XRD), scanning electron microscope (SEM) and nitrogen adsorption-desorption techniques. Prepared γ-alumina was tested for the adsorption of Pb2+ from aqueous solution at toxic metal concentrations, and isotherms were determined. The Pb2+ adsorption performance of the as-prepared samples was studied by atomic adsorption spectroscopy (AAS) method. According to the results, the prepared γ-aluminashowed the great adsorption performance of Pb2+with a high adsorption rate and adsorption capacity of 1150 mg/g when the adsorption reached to equilibrium for 5 min at room temperature and pH=5.5. The adsorbed amount increased rapidly with pH variation from pH 3 to 9. The optimum contact time, initial concentration of adsorbate, adsorbent mass and pH were determined and Langmuir, Freundlich and Tempkin adsorption models were obtained using metal ions concentrations in ranging from 100 to 400 mg/L. Correlation coefficients (R2) of Langmuir, Freundlich and Tempkin adsorption isotherms were 0.9994, 0.9975 and 0.9982, respectively, and Langmuir isotherm was more suitable for adsorption on γ-alumina than others. Also presence of Pb2+ ions has been confirmed by infrared spectroscopy. Efficient synthesis strategy, exceptionally high specific surface area and high adsorption efficiency of these mesoporous γ-alumina nanoparticles showed an excellent ability to remove Pb2+ heavy metal ions from aqueous solution that could find potential utility in the purification of polluted water.
Identifying operational improvements during the design process of costing system based on time-driven ABC (TDABC)
Authors: AhmadPour Jafar , AzimiMoghadam AliReza
Published: January 2022

Time driven activity-based costing is a new way to overcome the problems in the traditional ABC, where the first stage of the allocation of resources is removed and used resources are expressed by the time equations. The present research focuses on the behavioral aspects (staff public participation and leadership style) of system design and shows that how behavioral aspects can lead to operational improvements during the design process of time driven activity-based costing. In this study, two types of costing system are examined by reviewing and analyzing the case study used by Hozee and Bergman about setting up the costing system in various warehouses of a company in Belgium. In the first type, the participation of all members of the organization, especially at low levels, has led to discussions about the input parameters in the costing model and when this group discussions about costing data are driven by aware responsible (people-centered management style), operational improvement will be appeared. In the second type, the operational staff in the design process are not participated and are intimidated of the new costing system and have perforce implemented the system that finally no operational improvements have been reached. Hence, the findings of the research show that the staff public participation and appropriate management styles (Thoughtful leadership style - based on participation rather than absolute - authoritarian leadership style ) are unavoidable to achieve operational improvement during the design process of Time Driven Activity-based costing system, increase the chances of system success and finally lead to operational improvements.
Causes de la monodominance de l’essence Cynometra alexandri C.H. Wright (Eggeling 1947; Hamilton 1981), dans la forêt de Banana (Mambasa/Ituri/R.D. Congo)
Authors: LUSE Basile Belanganayi
Published: January 2022

La structure diamétrique et la répartition spatiale d’une essence tolérante à l’ombre à graines pesantes, de la forêt tropicale humide, Cynometra alexandri, ont été étudiées respectivement au travers le prélèvement de Diamètre à Hauteur de Poitrine (DHP) et de la fonction K de Ripley transformée. L’étude a été menée en République Démocratique du Congo, dans la localité de Banana, territoire de Mambasa, Province de l’Ituri, sur une parcelle de 120 ⨯ 500 m, où 101 individus adultes ont été recensés, mesurés et cartographiés. La répartition spatiale s’est révélée agrégée dans cette parcelle où C. alexandri est monodominant. En revanche, la structure diamétrique se présente en cloche déformée. Pour finir, des traits de vie de C. alexandri pouvant expliquer sa monodominance ont été analysés et un certain lien entre la répartition agrégée, la monodominance et le climax, a été conjecturé.
Guaranteeing of trust and security in e-commerce by means of improved SET protocol
Authors: AliShirvani Nasrin , Mortazavi Batool
Published: January 2022

Secure and reliable strategies are required in order to extensively operationalize e-commerce. Trust, service quality, security, privacy and dispute resolution strategies are among the most important issues needed to be considered in e-commerce transactions. In this paper, the most important e-commerce transaction protocol and its characteristics will be discussed. After discussing the limitations of this protocol, several solutions will be presented to overcome those limitations.
Hybrid Sense Disambiguation in Web Queries
Authors: Matinfar Farzam
Published: January 2022

With the development of the web, search engines have played an important role in information retrieval. Traditional search engines are based on keywords and usually are not satisfactory due to the unrelated provided information. With the emergence of semantic web, semantic search engines are being built which works based in the keywords’ meanings. In this paper we propose a hybrid method for keyword sense disambiguation in web queries. We analyze the key parameters and present experimental results which show the high performance of the proposed method.
Behavior of Prefabricated Structures in Developed and Developing Countries
Authors: Baghchesaraei Omid Reza , Lavasani Hossein Hosseini , Baghchesaraei Alireza
Published: January 2022

Today, prefabricated construction has become one of the major components of the developed countries construction and almost 100 percent of building construction utilize prefabricated materials and enormous prefabrication construction showcases in developing countries are in progress and prefabrication construction has shown its potential in development process there too. Although there are numerous advantages connected with developing and prefabricated buildings utilizing prefabrication frameworks, a few constraints can likewise exist. The aim of this research is evaluating different prefabrication technologies and systems in two different categorize (developed countries and developing countries). Prefabrication in construction has the capability to have any kind of effect inside different countries construction industry in monetary, social and ecological terms.
Cryptanalysis of an Improvement of Robust Deniable Authentication Protocol
Authors: Sadeghpour Mahshid
Published: January 2022

Deniable authentication protocol, as an advanced method of authentication, enables the intended receiver of a given message to identify the source of the message while preventing the receiver to prove this source to a third party. In 2013, Li and Takagi proposed an enhanced model of Yoon et al’s robust deniable authentication protocol and claimed that their model could achieve the property of deniable authenticity. The present study reviews and analyses Li and Takagi’s suggested model and argues that this model still needs improvement to satisfy deniability.
Equalizing the Use of Voltage Sources in Multi-level Structures
Authors: Birjandi Ali A. Motie , Shoushtari Sayed Ahmad E.
Published: January 2022

In multi-level converters which employ several DC voltage sources to deliver an AC output waveform by voltage levels, the selection method and use time of each source has direct effect on the longevity of sources and consequently total system. It is obvious that equal entrance and exit of voltage sources and also time use of them, increase longevity of sources and total system. On the other hand, same condition of working in voltage sources, yield to same condition for switches and uniformed heat distribution produced due to power losses. In this paper the subject of equalizing the use of voltage sources in multi-level structures, especially in symmetrical CHB, would be discussed. For this purpose, switching tables of CHB is corrected and Simulation results on a seven level of this structure with both prevalent and proposed methods are presented. These results confirm performance of corrected switching table and shows improvement in proposed converter work and uniformity in power loss distribution created by switches.
Composition chimique et activité antibactérienne des huile essentielles de Rosmarinus officinalis L.de la région de Hammamet (Tébessa-Algérie)
Authors: Boutabia Lamia , Telailia Salah , Bouguetof Ismail , Guenadil Faouzi , Chefrour Azzedine
Published: January 2022

Le romarin (Rosmarinus officinalis)est une espèce très abondante dans la région de Hammamet de la wilaya de Tébessa à l'Est algérien, il est utilisé en médecine populaire, cosmétique et phytopharmacie. L’extraction des huiles essentielles du romarin a été effectuée par entraînement à la vapeur d’eau. L’étude chimique de ces huiles essentielles par CPG-SM a révélé la richesse de ces dernières en 1,8 cinéole par rapport aux autres composés. L’activité des huiles essentielles de Rosmarinus officinalis sur trois souches bactériennes pathogènes (Staphylococcus aureus, Escherichia coli, Acinetobacter sp.) par la technique d’aromatogramme montre que le pouvoir antimicrobien de ces huiles est très important et se caractérise par une action bactéricide contre les germes suscités.
Application of MLP and RBF Methods in Prediction of Travelling within thecity
Authors: Nosrati Mehdi , Hoseini Mojtaba , Shirmarz Alireza , Somarin Abbas Mirzaei , Hoseininia Nayereh , Barari Morteza
Published: January 2022

Forecasting ofTravelling within the city demand is necessary for the correct operations of subway stations. This includes the provision of station security, management and better service to passengers will be. In this paper we are compared multilayer perceptron(MLP) and Radial Basis Function (RBF) models together for prediction of travelling within the city. The models are trained and assessed on dataset of Aliabad subway station in Tehran.
Numerical Simulation of Floating Pontoon Breakwater with ANSYS AQWA Software and Validation of the Results with Laboratory Data
Authors: Samaei Seyed Reza , Azarsina Farhood , Ghahferokhi Mohammad Asadian
Published: January 2022

The application of engineering software’s to design and analyze civil infrastructures is increasing. In this regard, computational fluid dynamics software’s used for the examination of the interaction of coastal and marine structures with waves play a unique role in the implementation of marine projects, since the operating costs of sea is significantly higher than that of land. In the present study, two models of floating pontoon breakwaters (i.e. simple pontoon as the first model and step pontoon as the second model) have been simulated with the application of ANSYS AQWA software. The main indicator of breakwater performance is the wave transmission coefficient (i.e. the ratio of the wave height on the back of the breakwater to the wave height entering the coastal zone) which is examined with the consideration of the changes occurring in the physical parameters such as draft, period, and amplitude of waves. The software solves the wave-structure interaction problem with the application of the boundary element method based on Laplace equation and presents water level meter as the output. Finally, the numerical results and the output of the software have been compared with the laboratory results to pursue the verification purpose. Laboratory data were extracted by the same team of researchers at Science and Research branch of Islamic Azad University. Furthermore, the obtained errors and deviations as well as the best possible performance and status of breakwaters at different waves have been specified.
Feasibility of RFID technology application in intelligent highways in Iran
Authors: Shureshi Alireza , Khezri Saman
Published: January 2022

Rapid changes in technology and communication have considerable effect on communities. With a simple review of urban transportation in recent years, it is found that despite great investment and construction of new roads, there are some problems including congestion, accidents, environmental pollution, etc. The realities in the analysis of transportation of Iran show that the problems in transportation system are extensive and having access to safe and rapid transportation requires extensive studies. It seems that control of effective factors is not possible via traditional methods. The idea of using intelligent transportation systems presents a new horizon to achieve continuous progress in information and communication community. Vehicles tracking and positioning in urban environments are the urban planning and management principles. This study aims to evaluate feasibility and presentation of RFID strategies as an exact and cheap technology compared to other technologies including GPS in smartization of highways and land transportation system. RFID is a cheap technology in advanced countries, even store systems and is also used in urban and transportation systems. RFID indicates the systems using Radio frequency to transfer identity of an object. This technology has proved its efficiency as an economical tool in improvement of performance and reduction of time and man power costs. This study indicates that more than 76% of prioritization in RFID application is dedicated to public transportation, intercity system and personal cars. One of the challenges of RFID application in Iran is the lack of planning and required infrastructures in this technology.
Les âges absolus en Sciences de la Terre
Authors: Vander Auwera Jacqueline
Published: January 2022

La stratigraphie et la paléontologie ont été très rapidement utilisées par les géologues pour placer leurs observations dans un cadre temporel. Néanmoins, la découverte de la radioactivité et l'application des techniques de physique nucléaire aux Sciences de la Terre a permis d'obtenir des âges absolus. C'est ainsi que l'âge de la Terre a pu être déterminé en datant les météorites et qu'on a pu détecter la présence de terrains très anciens à la surface de la Terre.
Effet neutralisant in vitro des pH basiques par les excrétions cutanées de Lumbricus terrestris
Authors: Raouane Mohamed , Harti Abdellatif El
Published: January 2022

L’étude du rôle de Lumbriscus terrestris dans la régulation du pH a suscité notre intérêt en raison de l’importance de ce facteur dans la fertilité du sol. Pour atteindre cet objectif, nous avons mis au point un nouveau protocole expérimental, entièrement réalisé en dehors du sol, afin d’écarter les interférences possibles sur la variation du pH. La procédure par immersion des vers dans des solutions réactionnelles à différents pH basiques a permis la délimitation d’une zone de tolérance in vitro comprise entre pH=7 et pH=12. Dans cette zone, plus le pH s’écarte de la neutralité, plus la réaction des vers est intense et plus la production des excrétions cutanées est abondante. On assiste instantanément à une tendance à la neutralisation progressive des solutions réactionnelles basiques. La procédure par pulvérisations régulières des vers par les mêmes solutions réactionnelles basiques a permis de constater que plus le pH s’écarte de la neutralité plus la diminution du poids frais moyen des vers est importante. Cette chute du poids frais confirme la libération des excrétions cutanées constatée de visu lors de la première procédure. Dans une autre expérience nous démontrons que l’effet neutralisant est fonction du poids frais des vers. En fin, l’application des excrétions cutanées isolées à partir des vers sur des solutions réactionnelles basiques entraine également une tendance à la neutralisation du pH de ces dernières. Compte tenu de ces résultats, on peut dire que dans la nature Lumbricus terrestris interviendrait directement par l’intermédiaire de ses excrétions cutanées dans la neutralisation des sols aux pH basiques.
De la qualité de l’eau de la rivière Muko affluent du lac Edouard à travers les macroinvertébrés benthiques
Authors: Kisoholo Mumbere Adelard , Juakaly Mbumba Jean-Louis , Malikwisha Meni Dieudonné , Muyisa Vughunza Gracien
Published: January 2022

Une étude de la qualité de l’eau de la rivière MUKO, affluent du lac Edouard, à travers les macroinvertébrés benthiques a été réalisée en trois campagnes de décembre 2013 à avril 2014. Les macroinvertébrés ont été récoltés sur les stations à l’aide de filets « SURBER» et « TROUBLEAU» respectivement pour l’analyse qualitative et l’analyse quantitative. Les indices biologiques de cette rivière révèlent que l’eau est d’excellente qualité dans les stations 1 et 2 pour les analyses qualitative et quantitative ; à la station 3 pour l’analyse quantitative et à la station 6 pour l’analyse qualitative. Elle est de bonne qualité à la station 4 pour les analyses qualitative et quantitative; et à la station 3 pour l’analyse qualitative. Enfin, elle est de qualité modérée à la station 6 pour l’analyse quantitative. Par ailleurs, nos résultats révèlent la présence de 490 spécimens répartis en 21 familles de macroinvertébrés reparties en 9 ordres groupés en 4 classes reparties à leur tour en 3 embranchements.
INFORMATION SYSTEM FOR DATA ANALYSIS POLLUTION OF WATER DRAINS OF NOVOSIBIRSK AND THE REGION
Authors: Молородов Ю.И. , Барциц В.В.
Published: January 2022

В работе показано влияние факторов, процессов и последствий загрязнения компонентов городских экосистем на загрязнение вод и гидрохимический состав воды малых рек и бассейна реки Обь. Описана структура прототипа интерактивной информационной системы (ИАС), в которой предусмотрена возможность получения прогноза на ближайшее пять лет.

The paper shows the influence of factors, processes and consequences of pollution of components of urban ecosystems on water pollution and hydrochemical composition of water of small rivers and the Ob river basin. The structure of the prototype of the interactive information system (IAS), which provides for the possibility of obtaining a forecast for the next five years, is described.
APPLICATION OF DATA COMPRESSION AND ARTIFICIAL INTELLIGENCE TECHNIQUES TO FORECASTING OF DEMOGRAPHIC AND ECONOMIC INDICATORS OF THE NOVOSIBIRSK REGION
Authors: Чирихин К.С.
Published: January 2022

Известно, что методы сжатия данных могут успешно использоваться для прогнозирования временных рядов. Разнообразные эвристики, присутствующие в современных алгоритмах сжатия, позволяют выявлять сложные закономерности в данных. В настоящей работе мы применяем данный подход для прогнозирования основных демографических и экономических показателей Новосибирской области. При этом мы совместно используем различные программы для сжатия данных, включая модели на основе формальных грамматик.

It is known, that data compression methods can be successfully used in time series forecasting. Modern data compression algorithms contain a variety of heuristics for searching of complex regularities. In this paper, we apply this approach to forecasting of the main demographic and economic indicators of the Novosibirsk region. To obtain forecasts, we combine different programs for data compression, including implementations of grammar-based codes.
APACHE BIG DATA TECHNOLOGY APPLICATION IN THE CLIMATE MONITORING TASKS
Authors: Золотов С.Ю. , Турчановский И.Ю.
Published: January 2022

Проведен эксперимент по апробации технологии Big Data в исследованиях климатических систем. В ходе эксперимента было реализовано четыре варианта решения тестовой задачи. Ускорение расчетов с помощью технологии Apache Big Data вполне достижимо и наиболее эффективный способ для этого найден в четвертом варианте решения тестовой задачи.

The experiment was conducted to test Big Data technology in the study of climate systems. Four options for solving the test problem were implemented during the experiment. Accelerating calculations using Apache Big Data technology is quite achievable and the most effective way to do this is found in the fourth solution to the test problem.
QUALITY CONTROL FOR CITED SCIENTIFIC PLOTS IN W@DIS INFORMATION SYSTEM COLLECTION
Authors: Лаврентьев Н.А. , Фазлиев А.З.
Published: January 2022

В докладе дано краткое описание созданной коллекции графиков, характеризующих спектральные процессы, и представлена оценка качества семантической коллекции графиков, характеризующих процессы поглощения в спектроскопии и результаты исследований потенциальных функций, описывающих слабо связанные комплексы. Ключевой проблемой, рассмотренной в докладе, является оценка качества цитируемых графиков. Выделены сложности, возникающие при оценке, и указаны не решенные задачи при корректной оценке качества научных графиков.

This work briefly characterizes the spectral processes scientific plots collection and provides the quality assessment of the semantic collection of scientific plots. The collection contains data on spectroscopic absorption processes and the results of weakly bounded complexes potential functions research. The key issue of this report is the quality assessment of cited scientific plots. The difficulties with quality assessment are highlighted and unsolved problems with quality control for scientific plots are denoted.
PROSPECTS AND ROLE OF DIGITAL TWINS IN THE PROBLEM OF DOCUMENTING AND MONITORING OF THE ROCK ART SITES
Authors: Казаков В.В.
Published: January 2022

Одной из важнейших задач современной археологии является документирование объектов культурно-исторического наследия, в том числе памятников наскального искусства. В статье рассматриваются перспективы и модель использования цифровых двойников для сохранения и представления полной информации о таких объектах. Рассматривается модель представления визуальной формы объектов наскального искусства не только в виде фотографий и зарисовок, но и интерактивных трехмерных моделей. Предложена модель использования цифровых копий для мониторинга состояния памятников.

One of the most important tasks of modern archaeology is the documentation of objects of cultural and historical heritage, including rock art sites. The article discusses the prospects and model of using digital twins to save and present complete information about such objects. We consider a model for representing the visual form of rock art objects not only in the form of photographs and sketches, but also interactive three-dimensional models. A model of using digital copies to monitor the status of monuments is proposed.
VISUALIZATION AND ANALYSIS TOOLS OF THE SPECTRA OF THE INFORMATION SYSTEM «ELECTRONIC STRUCTURE OF ATOMS»
Authors: Казаков В.В. , Казаков В.Г. , Мешков О.И. , Тихонова А.А.
Published: January 2022

В работе описывается Интернет сервис для визуализации и сравнительного анализа спектров, реализованный в составе информационной системы по атомной спектроскопии Электронная структура атомов . Описываются возможности генерации различных представлений спектров из базы данных системы в виде интерактивных спектрограмм с набором инструментов для удобного представления и анализа. Представляется возможность для пользователей информационной системы загружать в систему файлы с данными экспериментальных спектров, а также вести их обработку и визуальный анализа в сопоставлении с эталонными спектрами атомных систем, хранимыми в системе. Обсуждаются возможности нового инструментария для целей научных исследований и подготовки специалистов.

The Internet service for visualization and comparative analysis of spectra that is implemented as part of the information system on atomic spectroscopy Electronic structure of atoms is described in the article. The possibilities of representation of spectra from the system database in the form of interactive spectrograms, which have a set of tools for convenient presentation and analysis, are described. There is an opportunity for users of the information system to upload files with the data of experimental spectra to the system, as well as conduct their processing and visual analysis in comparison with the reference spectra of atomic systems stored in the system. The possibilities of a new toolkit for research and training are discussed. The possibilities of using new tools for research and training of specialists are discussed.
ISSUES OF DIGITAL REPOSITORY INTEGRATION OF A SCIENTIFIC ORGANIZATION WITH EXTERNAL INFORMATION SERVICES
Authors: Ковязина Е.В.
Published: January 2022

Продвижение общества к цифровому инициировало кардинальные изменения в принципах и подходах к науке и образованию. Одним из важных аспектов продвижения по этому пути является открытый доступ к результатам научных исследований, который может быть реализован с помощью технологий и на программной платформе открытых архивов. Внедрение открытых архивов в библиотеке научнообразовательной организации требует решения множества возникающих проблем, таких как выбор и дополнение схем данных, пакетный обмен данными между системой автоматизации библиотеки и цифровым архивом, вопросы аутентификации и авторизации пользователей, лицензирование цифровых документов и коллекций и т.д. Некоторые из этих проблем относительно легко решают сетевые службы и сервисы, активно развивающиеся в процессе формирования инфраструктуры открытой науки в сети Интернет и являющиеся ее неотъемлемой частью. Подключение их к цифровому архиву, а также исследование возможностей и особенностей их функционирования является актуальной задачей. Рассмотрены некоторые полезные для библиотек службы и сервисы, интеграция с которыми может быть реализована средствами программной платформы DSpace 6.3, а также особенности их настройки и работы.

The advancement of society to the digital future has initiated dramatic changes in the principles and approaches to science and education. One of the important aspects of moving along this path is open access to the results of scientific research, which can be implemented using technology and the open archives software platform. The introduction of open archives in the library of a scientific and educational organization requires solving many problems that arise, such as the selection and correction of data schemes, the batch exchange of data between the library automation system and the digital archive, issues of authentication and user authorization, licensing of digital documents and collections, and etc. Some of these problems are relatively easily solved by network services that are actively developing in the process of creating an infrastructure of open science on the Internet and being its integral part. Connecting its to a digital archive, as well as exploring the possibilities and features of their functioning, is an urgent task. Some services useful for libraries are considered, integration with which can be implemented using the DSpace 6.3 software platform, as well as the features of their configuration and operation.
Design of Active Defects in Semiconductors: 3D Electron Diffraction Revealed Novel Organometallic Lead Bromide Phases Containing Ferrocene as Redox Switches
Authors: Fillafer Nicole , Kuper Henning , Schaate Andreas , Locmelis Sonja , Becker Joerg August , Krysiak Yaşar , Polarz Sebastian
Published: January 2022

Once the optical, electronic or photocatalytic properties of a semiconductor are set by adjusting composition, crystal phase and morphology, one cannot change them anymore, respectively on demand. Materials enabling a post-synthetic and reversible switching of features such as absorption coefficient, band-gap or charge carrier dynamics represent are highly desired. Hybrid perovskites facilitate exceptional possibilities for progress in the field of smart semiconductors because active organic molecules become an integral constituent of the crystalline structure. We report the integration of ferrocene ligands into semiconducting 2D phases based on lead bromide. The complex crystal structures of the resulting, novel ferrovskite phases were determined by 3D electron diffraction. The ferrocene ligands exhibit strong structure directing effects on the 2D hybrid phases, which is why the formation of exotic types of face and edge sharing lead bromide octahedra is observed. The band gap of the materials ranges from 3.06 eV up to 3.51 eV, depending on the connectivity of the octahedra. Deploying the redox features of ferrocene, one can create defect states or even a defect band leading to the control over the direction of exciton migration and energy transport in the semiconductor.
Potential response of single successive constant-current-driven electrolytic hydrogen bubbles spatially separated from the electrode
Authors: Raman Akash , Peñas Pablo , van der Meer Devaraj , Lohse Detlef , Gardeniers Han , Fernández Rivas David
Published: January 2022

In gas-evolving electrolytic processes, the presence of bubbles can heavily alter the mass transport of gaseous products and can induce severe overpotential penalties at the electrode through the action of bubble coverage (hyperpolarization) and electrolyte constriction (Ohmic shielding). However, bubble formation can also alleviate the overpotential by lowering the concentration of dissolved gas in the vicinity of the electrode. In this study, we investigate the latter by considering the growth of successive hydrogen bubbles driven by a constant current in alkaline-water electrolysis and their impact on the half-cell potential in the absence of hyperpolarization. The bubbles nucleate on a hydrophobic cavity surrounded by a ring microelectrode which remains free of bubble coverage. The dynamics of bubble growth does not adhere to one particular scaling law in time, but undergoes a smooth transition from pressure-driven towards supply-limited growth. The contributions of the different bubble-induced phenomena leading to the rich behaviour of the periodic fluctuations of the overpotential are identified throughout the different stages of the bubble lifetime, and the influence of bubble size and applied current on the concentration and Ohmic overpotential components is quantified. We find that the efficiency of gas absorption, and hence the concentration-lowering effect, increases with increasing bubble size and also with increasing current. However, the concentration-lowering effect is always eventually countered and overcome by the effect of Ohmic shielding as the bubble size outgrows and eclipses the electrode ring beneath.
3D conformational generative models for biological structures using graph information embedded relative coordinates
Authors: Xu Mingyuan , Huang Weifeng , Xu Min , Lei Jinping , Chen Hongming
Published: January 2022

Developing molecular generative models for directly generating 3D conformation has recently become a hot research area. Here, an autoencoder based generative model was proposed for molecular conformation generation. A unique feature of our method is that the graph information embedded relative coordinate (GIE-RC), satisfying translation and rotation invariance, was proposed as a novel way for encoding molecular three-dimensional structure. Compared with commonly used Cartesian coordinate and internal coordinate, GIE-RC is less sensitive on errors when decoding latent variables to 3D coordinates. By using this method, a complex 3D generation task can be turned into a graph node feature generation problem. Examples were shown that the GIE-RC based autoencoder model can be used for both ligand and peptide conformation generation. Additionally, this model was used as an efficient conformation sampling method to augment conformation data needed in the construction of neural network-based force field.
The weak Lefschetz property of graded Gorenstein algebras associated to the Apéry set of a numerical semigroup
Authors: Tran Quang Hoa , Ho Vu Ngoc Phuong
Published: January 2022

It has been conjectured that all graded Artinian Gorenstein algebras of codimension three have the weak Lefschetz property over a field of characteristic zero. In this paper, we study the weak Lefschetz property of associated graded algebras A of the Apéry set of M-pure symmetric numerical semigroups generated by four natural numbers. These algebras are graded Artinian Gorenstein algebras of codimension three.
In vitro antioxidant activity and bioactive compounds from Calocybe indica
Authors: Nguyen Quang Man , Le Lam Son , Nguyen Minh Nhung , Nguyen Chinh Chien , Ho Xuan Anh Vu , Nguyen Vinh Phu , Tran Thanh Minh , Le Thuy Trang , Tran Thi Van Thi , Hieu Le Trung
Published: January 2022

Nowadays, the use of mushrooms in medicine is ubiquitous and has achieved particular success. The antioxidants in mushrooms can deactivate free radicals. This study assesses the antioxidant potential of mushroom Calocybe indica with the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical scavenging methods and the total antioxidant capacity. The mushroom’s ethanol extract exhibits acceptable activity with a low IC50 value (240.11 μg/mL), approximately 2.9 times lower than that of the mushroom Ophiocordyceps sobolifera extract. The ABTS scavenging rate of the extract is around 60% at 500 µg/mL, and the total antioxidant capacity is equivalent to 64.94 ± 1.03 mg of GA/g or 77.42 ± 0.42 μmol of AS/g.  The total phenolics, flavonoids, polysaccharides, and triterpenoids are equivalent to 29.33 ± 0.16 mg of GAE/g, 17.84 ± 0.11 mg of QUE/g (5.04 ± 0.04%), and 4.96 ± 0.04 mg of oleanolic acid/g, respectively. Specifically, the total triterpenoid content has been reported for the first time. The mushroom can have potential biomedical applications.
Dispersion and nonlinearity properties of small solid-core photonic fibers with As2Se3 substrate
Authors: Nguyen Thi Thuy , Hoang Trong Duc , Le Tran Bao Tran , Dang Van Trong , Chu Van Lanh
Published: January 2022

Characteristics of As2Se3 photonic crystal fibers (PCFs) with a solid-core and small-core diameter are numerically investigated in the long-wavelength range (from 2 to 10 μm). A full modal analysis and optical properties of designed photonic crystal fibers with lattice constant Λ and filling factor d/Λ are presented in terms of chromatic dispersion, effective refractive index, nonlinear coefficients, and confinement loss. The simulation results show that a high nonlinear coefficient of 4410.303 W–1·km–1 and a low confinement loss of 10−20 dB·km–1 can simultaneously be achieved in the proposed PCFs at a 4.5 μm wavelength. Chromatic dispersions are ﬂat. The values of dispersion increase with increasing filling factor d/Λ and decrease with the increase in lattice constant Λ. In particular, some chromatic dispersion curves also cut the zero-dispersion line at two points. The flat dispersion feature, high nonlinearity, and small confinement loss of the proposed photonic crystal fiber structure make it suitable for supercontinuum.
A SOCIAL SURVEY ON HEALTH IMPLICATIONS OF IODINE DEFICIENCY IN WOMEN AND CHILDREN IN HILLY AREAS OF PAKISTAN
Authors: Asim Aqsa Zaheer , Hussain Zahid , Ali Jawad , Bibi Sumera , Mohiuddin Muhammad , Irshad Muhammad
Published: January 2022

Iodine deficiencies are common in hilly areas which leads to serious health implication. The study investigated health implications in women and children related to iodine deficiency. 210 female respondents were randomly selected from three union councils, (UCs) i.e., Namli Mehra, Nathia Gali and Pala of District Abbottabad, Pakistan. Lower education and income levels decreased knowledge and understanding about iodine related health issues. The children were more affected, especially the growth of girls was more impacted due to iodine deficiency. Factor analysis revealed that lower education levels were the main cause of iodine deficiency disorders in the study area.
HOW CAN WE IMPROVE OUR CRITICAL CARE SERVICES?
Authors: Goonasekera Chulananda , Freebairn Ross
Published: January 2022

The “optimisation of recovery” is the therapeutic mission of critical care medicine. The goal is not merely “survival”. The mortality rate or its reduction alone is not a robust indicator of the country’s quality of critical care service. The morbidity matters most. We review here the basic principles of critical care associated with its historical milestones and measures undertaken by communities worldwide to enhance cost-effectiveness by adopting suitable education models that cater to the escalating demand.
Utilitarianism, Altruism, and Consent
Authors: Meacham Christopher
Published: January 2022

A number of criticisms of Utilitarianism – such as “nearest and dearest” objections, “demandingness” objections, and “altruistic” objections – arise because Utilitarianism doesn’t permit partially or wholly disregarding the utility of certain subjects. A number of authors, including Sider (1993), Portmore (2008) and Vessel (2010), have responded to these objections by suggesting we adopt “dual-maximizing” theories which provide a way to incorporate disregarding. And in response to “altruistic” objections in particular – objections noting that it seems permissible to make utility- decreasing sacrifices – these authors have suggested adopting a dual-maximizing theory that permits disregarding one’s own utility. 

 

In this paper I’ll defend two claims. First, I’ll argue that dual-maximizing theories are a poor way to incorporate disregarding. Instead, I’ll suggest that “variable- disregarding” theories provide a more attractive way to incorporate disregarding. Second, I’ll argue that the right way to handle these “altruistic” objections isn’t to permit disregarding one’s own utility, it’s to permit disregarding the utility of those who consent. Together, these two claims entail that the best way to modify Utilitarianism to handle “altruistic” objections is to adopt a variable-disregarding view that disregards the utility of those who consent.
Positive Rights: Two-Person Cases
Authors: Alm David
Published: January 2022

The aim of this paper is to analyze the simplest type of case in which need-based positive rights to aid are often attributed. In such "two-person cases" there is just one agent and one patient, and the agent can aid the patient. Two questions are asked about such cases: (1) why does the agent in such a case lack a negative right he would normally have? And (2) why does the patient have a positive right he would not normally have? The main focus in on question (1), though an answer to question (2) is briefly sketched. The paper presupposes a view of negative rights as the authority to make demands of others. To explain why such authority is lacking in two person cases, it is suggested that such authority requires being able to demand non-interference "decently." This idea of a "decent", or non-selfish, demand is then elucidated, and an argument is offered for the suggested explanation. Finally there is a brief look at two-person cases involving significant cost to the agent.
Estudio de intervención psicopedagógica de un caso de dislexia desde la inclusión educativa
Authors: González Castellón Esther , Carbonell Bernal Noelia , Aguaded Gómez María Cinta , Andreu Callau Alba
Published: January 2022

En la actualidad, en los centros educativos hay entre un 5% y un 10% de escolares con dislexia. Por tanto, existe una necesidad en los centros educativos para atender adecuadamente a este alumnado desde la inclusión educativa, para ello, se ha escogido el caso de una alumna de 3º de Educación Primaria con dificultades de aprendizaje de la lectura y de la escritura, es por lo que realizaremos un estudio de intervención psicopedagógica inclusiva. Esta intervención está diseñada para ser llevada a cabo en un centro ordinario, a través de juegos que se desarrollarán dentro del aula de referencia de la discente, mediante actividades en pequeño grupo para todo el alumnado. La metodología empleada será práctica, vivencial, manipulativa, experimental y significativa, para proporcionarle estrategias a la alumna y poder transferir el aprendizaje a su vida cotidiana siempre dentro de su grupo de referencia.

La intervención que se llevó a cabo fue de corte multidisciplinar, teniendo en cuenta a la familia y a todos los profesionales que la atienden existiendo coordinación entre el centro escolar, y el gabinete psicopedagógico externo al que acude. Para llevar a cabo la intervención con éxito se proporcionaron unas orientaciones a todas aquellas personas que intervienen con la alumna para obtener una mejora de sus capacidades y en los aspectos lectoescritores, así como también en autonomía, autoconcepto y autoestima.
On the Synonym Search Model
Authors: Атаева Ольга Муратовна , Серебряков Владимир Алексеевич , Тучкова Наталия Павловна
Published: January 2022

The problem of finding the most relevant documents as a result of an extended and refined query is considered. For this, a search model and a text preprocessing mechanism are proposed, as well as the joint use of a search engine and a neural network model built on the basis of an index using word2vec algorithms to generate an extended query with synonyms and refine search results based on a selection of similar documents in a digital semantic library. The paper investigates the construction of a vector representation of documents based on paragraphs in relation to the data array of the digital semantic library LibMeta. Each piece of text is labeled. Both the whole document and its separate parts can be marked. The problem of enriching user queries with synonyms was solved, then when building a search model together with word2vec algorithms, an approach of "indexing first, then training" was used to cover more information and give more accurate search results. The model was trained on the basis of the library's mathematical content. Examples of training, extended query and search quality assessment using training and synonyms are given.
The Rating of the Journal in the Bibliographic Database
Authors: Горбунов-Посадов Михаил Михайлович , Полилова Татьяна Алексеевна
Published: January 2022

The tool for building ratings of scientific journals is one of the popular services of bibliographic databases. The task of building a rating is usually divided into two main subtasks: determining the reference group of journals and calculating the rating indicator for journals of this reference group. Practice shows that for the correct comparison of journals, a necessary condition is to limit the reference group to exclusively journals of a certain subject. In the case of methodological errors made at the stage of selecting a reference group, the values of the journal index in the rating may differ greatly from the expected ones.

For example, in the ranking of journals in the Russian Science Citation Index (RSCI) according to the two-year impact factor in the thematic area “Mathematics”, classical fundamental mathematical journals, contrary to expectations, do not reach the first positions of the rating. The first positions were taken by journals for which mathematics is not the dominant profile discipline. Analysis of statistical data on the subject of published articles and citations in journals that occupy leading positions in the RSCI rating shows that the multidisciplinary nature of these journals significantly influenced the rating indicators.

The noted misunderstanding leads to the idea that in this case, not all the articles of the journal should have been involved in the calculation of the rating, but only those related to this thematic area. At the same time, the existing scheme of thematic classification of directions also raises questions. The "bottom-up" classification, which is gaining popularity and works on a representative array of articles, seems to be more promising. Here thematic clusters are isolated on the basis of the concept of proximity of articles, interpreted as the proximity of their bibliographic links. And further, the thematic affiliation of the article is not assigned by the volitional decision of the author or the editorial board, but is strictly formally calculated on the basis of its bibliographic list.
Publications of the XIX-XX Centuries about the Telegraph (Based on Materials from Electronic Libraries)
Authors: Поляк Юрий Евгеньевич
Published: January 2022

The century before last saw revolutionary changes in the transmission of information. For the functioning of the optical telegraph, which appeared in the late 18th century, cumbersome towers were necessary for the line of sight of semaphore signals. A hundred years later, the length of telegraph lines was hundreds of thousands of kilometers. At the turn of the century, the first experiments with the use of wireless telegraph began. This is reflected in numerous brochures, books, periodicals of that time. After another hundred years, many of these materials have become publicly available thanks to the development of the Internet and electronic libraries; they are intensively viewed and posted online. The rapid growth in the number of digital libraries and their content made this paper possible. Its goal is to trace the evolution of technologies and processes of information transfer reflected in literature, using a wide variety of electronic libraries - from the ambitious projects of the Library of Congress or Google Books with their millions of digitized books to modest private collections. dedicated to local topics. Materials from more than 20 electronic libraries have been used.