bluuebunny/crossref_metadata_2025 huggingface dataset:
Training and development of communication skills to future specialists in physical education and sports
Authors: Gidei Mariana
Published: May 2021

Communicative skills are the mobilization of a set of resources that are practically manifested by those involved in the interaction and are applied to communicate successfully. Regarding the training of communication skills, we mention the three levels of their acceptance: the taxonomy and the fields assumed by the key European skills; the inner structure of skills as goals: knowledge, abilities, attitudes; university curriculum (including general and specific skills).The purpose of the experiment was to develop communication skills by introducing practical studies into the content of learning (seminars and individual work of students), increasing the value of each student's academic performance, as well as improving the student's relationship within the university collective and developing the competency model in communication needed by the specialist in the field. The research hypothesis: the introduction of practical studies in the seminars and the individual work of the students, through the use of a modern, interactive teaching vision, determines the development of students' communication skills, positive interpersonal relation and improvement of performances and academic success in the subject "Management of Communication in Physical Education and Sports". The practical-applicative research took place at SUPES, with students from the Sports Faculty in the academic year 2016-2017. The sample of subjects was made up of 28 students, the third year of studies. Methodology of research: pedagogical experiment, systematic observation method, test method, observation method, method of portfolio analysis / materials of students (sheets, posters, papers, case studies, reports, research projects created by them). The result of the research is training and development of students' communication skills in the course " Management of Communication in Physical Education and Sports", by substantiating the application methodology in the learning process, respectively the result of the knowledge, practical skills, including the attitudes trained by communication , which will lead to an increased level of their training.
Method and the machine for training the running speed
Authors: Petrescu Tomina Dana , Ionescu Bondoc Dragoș
Published: May 2021

Former sprint runner, I was particularly concerned with sprint training methodology. In this regard, I have experimented together with our training colleagues, an exercise that stimulates the increase of speed of the steps in speed running, using an installation made by our own coach, designed to stimulate and increase the frequency of the steps, coaching the so-called "super-speed”. In order to increase the running speed, besides developing motor skills, a series of technical objectives must be achieved through training.It is known that using run-on exercises, similar to running on a downhill slope, there is a series of positive influences on the kinetics of the running speed of which the impulse angle and the orientation of the impulse vector in the CGM on - the impulse angle is primordial, along with:-achieving the optimum ratio between the frequency and the length of the steps;-increasing the power released by the impulse foot;-decreasing the impulse angle;-increasing the frequency of the treadmills achieved per unit of time;-increasing the length of the steps.Our experiment has attempted to justify this kind of exercise in speed training. Finally, it was found that this exercise positively affects the last two goals listed above.
Preparation of performance swimmers at sprint distances
Authors: Stepanova Natalia , Postica Sergey
Published: May 2021

Determination of effective tools and methods for improving the fastness of the swimmers in modern development.
Implementation of technical-tactical training strategies for Romania's national ice hockey team
Authors: Trandafir Marius , Balint Lorand
Published: May 2021

In sport, the technical-tactical component is part of the training process of athletes and has a different degree of involvement, depending on the sports branch in question. Ice hockey is a game in which technical-tactical training strategies are decisive in achieving the proposed performance goal. The effectiveness of the implementation of technical-tactical strategies depends mainly on the level of physical training of the team, as this ensures the necessary energy support for the use of tactical elements with higher efficiency indices.During the study conducted by us, we intend to highlight, for the Romanian national ice hockey team - senior level, the incidence of the technical-tactical strategies that we have designed in achieving the performance objective already set - advancing in a superior Group within the World Ice Hockey Championship. The research methods we used were the following: analysis of the literature of specialty, the observation method, the pedagogical experiment method and the statistical method. The independent variable that we have used consists in the implementation of technical-tactical strategies to Romania's national ice hockey team. The results of the research showed the weight of training components during a competitive year. In the pedagogical experiment that we have conducted, the technical-tactical training has an important place in the training process, the individual and collective technical-tactical training weighing the most.After the final evaluation the technical-tactical training strategies were proven effective and led, along with other components of the training, to the achievement of the targeted objective.
Injuries resulting from practicing performance sports in table tennis and tennis
Authors: Mocanu Mircea Dan , Mereuță Claudiu , Iordan Daniel Andrei
Published: May 2021

Performance sport as an area of human excellence requires, besides an over-average genetic endowment of motor skills, a huge workload of high intensity, which causes the wear of the body systems of the athletes, especially the osteo-musculo-articular. The high ball movement speed for rocket and paddle sports disciplines such as table tennis and field tennis, intensively demands the performance of the body of practitioners when performing specific technical tactics, especially the technical elements of the attack, such as topspin or smash. Based on the theoretical documentation, I noticed an acute condition in the scapulo-humeral joint 21.05%, at the lumbar level 15.79% and 13.16% in the ankle joint in the table tennis and in the field tennis as percentages at scapulo-humeral joint 13.85%, lumbar 15.38% and 20.00% ankle joint, aspects that validate our desire to improve the quality of life of practicing athletes of the two disciplines through a program of amelioration of compensatory nature.The objective of this theoretical research is to identify the areas subject to mechanical stress with high risk of wearor injury from the two "sister" sports disciplines.Tasks: Critical analysis of a larger volume of studies conducted on the direction of our research interest.Purpose: obtaining the information necessary which would highlight the risks the performance athletes, practitioners of the two disciplines, are subjected to, as well as gaining knowledge on tennis and table tennis.
Changes in the 2019-2020 competition season, in the national handball league, as a result of the COVID-19 pandemic
Authors: Gheorghe Carmen , Mereuță Claudiu
Published: May 2021

The crisis launched by the COVID-19 had immediate consequences in all areas of activity, including the sports world. If initially in Romania the handball matches were played without spectators, then they were stopped, the players being forced to preventively isolate themselves at their homes. The first objective of this research is to identify and analyze the Romanian Handball Federation’s decisions taken at the beginning of the pandemic and the second objective is to identify the structural differences between a normal competitive season and the competitive season affected by the Covid-19 pandemic, in Romanian handball.
Giresun Kıyı Şeridindeki Patella sp. nin Et Kalitesi Değişiminin Mevsimsel Olarak Belirlenmesi
Authors: MUTLU Cengiz , ŞEN Fulya Gaye , KALKAN Selin
Published: May 2021

Patellalar dünyanın birçok bölgesinde insan gıdası olarak tüketilen canlılardandır fakat literatür incelendiğinde, ekonomik olarak yeterince değerlendirilmeyen Patella sp. örneklerinin et kalitesi açısından değerlendirildiği bir çalışma bulunmamaktadır. Bu nedenle çalışmamızda, Patella sp. örneklerinin fiziksel, kimyasal ve mikrobiyolojik özelliklerinin araştırılması amaçlanmıştır. Araştırma sonuçlarına göre, Giresun ilinden üç farklı istasyondan (Sanayi, Eynesil, Piraziz) toplanan ve farklı mevsimlerde (ilkbahar, yaz, sonbahar, kış) analize alınan Patella sp. örneklerinin su aktivitesi değerleri (0.9909-0.9989), pH (6.87-7.76), kurumadde (%16.68-27.76), kül (%1.64-2.55) ve protein (%3.65-15.40) gibi fizikokimyasal özellikleri, literatürde yer alan midye çalışmaları ile benzerlik göstermektedir. Patella sp. örneklerinin toplam mezofilik aerobik bakteri değerleri 7.98-8.96 log kob/g olarak bulunmuş ve bu değerlerin tavsiye edilen tüketim değerlerini aştığı tespit edilmiştir. Örneklerin koliform grup bakteri sayısı ise 1.15-2.38 log kob/g olarak belirlenmiş olup, bu değerler su ürünleri yönetmeliğinde belirtilen sınır değerler arasındadır. Örneklerin E.coli sayı ortalamaları ise 0.30-24.00 EMS/g olup, bu değerler ise tüketim limit değerlerini aşmaktadır. Örnekler toplam psikrofil bakteri yükü açısından değerlendirildiğinde 1.35-2.66 log kob/g arasında değerlere sahip oldukları ve bu değerlerinin literatürdeki yayınlarla benzerlik gösterdiği görülmektedir. Maya-Küf sayısı açısından da 5.09-6.76 log kob/g arasında değer ortalamasına sahip olan Patella sp. örneklerinin, literatürdeki diğer çalışmalara kıyasla daha yüksek toplam maya-küf sayısına sahip oldukları tespit edilmiştir.
Glukosinolatlardan hidrolize edilen sulforafanın potansiyel etkileri ve Nrf2-Keap-1 sinyal yolağı ile ilişkisi
Authors: KARAKCI Deniz
Published: May 2021

Glukosinolatlar (Gls), Brassica sebzelerinde bulunan ekonomik açıdan önemli olan ikincil bitki metabolitleridir. Glukosinolatlar ve bunların hidroliz ürünleri insanlar ve hayvanlar üzerinde birçok faydalı etkiye sahiptir. Gls, bitki içeriğinde ve bağırsak mikroflorasında bulunan myrosinaz enzimi ile hidrolize edilir ve bu şekilde biyolojik aktiviteleri ortaya çıkarabilmektedir. Glukosinolatların parçalanma ürünlerinden biri olan izotiyosiyanatlar bazı kanser türlerinin önlenmesinde önemli roller oynamaktadır. En çok incelenen izotiyosiyanat öncül maddesi sülforafan, memeli hücre koruyucu enzimlerinin güçlü bir uyarıcısı olarak brokoli özlerinden izole edilmektedir. Sülforafanın, bir sıçan memeli tümör modelinde, tümörlerin boyutunu indirekt bir antioksidan olarak çalışarak küçülttüğü bildirilmiştir. Nrf2 (NF-E2 ile ilişkili faktör 2), antioksidan ve detoksifiye eden genlerin ekspresyonunu düzenleyen, spesifik bir gen tarafından kodlanan bir transkripsiyon faktörüdür. Nrf2, birçok Faz I ve Faz II ilaç metabolize edici enzimlerin ekspresyonunu kontrol etmektedir. Aynı zamanda, Keap1 (Kelch-benzeri ECH birleştirici protein 1) sistein aminoasitlerce zengindir ve oksidatif stresin oluşmasına bağlı olarak çalışabilen bir sensör görevi yapmaktadır. Hücre koruyucu proteinleri kodlayan genlerin çoğu, Keap1-Nrf2-ARE sinyal yolu boyunca ortak transkripsiyonel düzenlemeyi sağlamaktadır. Artan strese göre, Keap1 Nrf2'yi aktive eder ve antioksidan tepki elementini (ARE) uyarmaktadır. Özellikle glukosinolatlardan hidrolize edilen sülforafan, bu yolu kullanarak oksidatif hasara ve çeşitli kanser türlerine karşı vücudu koruduğu düşünülmektedir.
Impacto de las TIC en la enseñanza:
Authors: Rodrigo Andrea Fernanda , Méndez Bárbara , Oliva Ivan Jesus
Published: May 2021

Hoy en día se asiste a un hecho inédito. La escuela que se pensó para ser presencial tiene que asumir la virtualidad1. En muchos casos, esto representa una “carga” para los docentes, que se encuentran ante la obligatoriedad de asumir estos nuevos formatos. Como docentes y a la vez investigadores, entendemos que todo momento de crisis se puede ver cómo un desafío: podemos “aprender” de estos nuevos formatos mucho más de lo que parece. Yendo en especial a la enseñanza de la lengua y la literatura, a menudo parece constituir una pareja desavenida. Así ejercicios de análisis sintáctico o de conjugación de verbos se encuentran en una vereda y preguntas que apuntan a la comprensión de textos literarios se encuentran en otra vereda. Todo esto es una consecuencia directa de la fragmentación de saberes que atraviesa sobre todo la educación secundaria. Esa misma fragmentación que separa a Lengua materna de Lengua extranjera, como si fueran compartimentos estancos y no pudiera encontrarse ningún lazo que las uniera. Esa misma fragmentación que privilegia la lectura en detrimento de la escritura, de modo que es frecuente encontrar incluso en profesionales universitarios serias dificultades para escribir. Aquí es donde justamente se observa la posibilidad que puede brindar una herramienta informática. Concretamente nos referimos a los aportes que vienen de aquellos que estudian el procesamiento automático de textos, como un área transversal que nos permite encontrar una punta de análisis para comenzar a superar estas fragmentaciones.
NooJ local grammars and cognitive small worlds:
Authors: Monteleone Mario
Published: May 2021

Over the course of centuries, time has been and still is one of the concepts men have been long investigating, more specifically, the way in which time, in its flow, can be objectively managed and coped with. Scientists, philosophers, writers and artists have tried and still try to make their contribution to the conceptual definition of time, however discovering that it constantly seems to escape any form of definitive and immutable indication, especially as regards the classic tripartite but elusive subdivision of time conceived as past, present and future. Consequently, the postulations regarding the concept of time have produced innumerable and extremely varied statements. To name just two of them, only apparently dissimilar, we will recall Albert Einstein’s "Time is relative, its only value is given by what we do while it is passing" and Marcel Proust’s "The days are perhaps the same for a watch, but not for a man." The attempt to “dominate” time and its continuous and uninterrupted flow is present also in the morphosyntactic structures of natural languages, including Italian. Therefore, the aim of this paper is to assess how date and duration expressions are morphosyntactically built and can be formalised by means of specific NooJ local grammars, finite-state automata (FSA) and graphs.
Morfología y diccionario electrónico de nombres en Quechua
Authors: Duran Maximiliano
Published: May 2021

Presentamos aquí dos diccionarios electrónicos de nombres en quechua, uno con traducción al español y otro, al francés. Cada lexema incluye sus propiedades sintáctico-semánticas y su correspondiente paradigma flexional FLX. Después de hacer un inventario de los sufijos nominales, muestro la manera cómo hemos construido la matriz fundamental que rige la morfología nominal del quechua, comenzando por aglutinación binaria de estos sufijos. Luego presentamos el método para obtener las gramáticas racionales que nos permitan generar, automáticamente, usando la plataforma lingüística NooJ, todas las formas nominales conteniendo dos o más sufijos. Luego mostramos cómo, aplicando a un pequeño texto quechua, interrogaciones en formato NooJ se obtienen las correspondencias de las formas nominales reconocidas en ese texto, flexionadas o no, y cómo, enseguida se las puede visualizar gráficamente, en colores, sobre ese texto, obteniéndose un alto índice de reconocimiento (94%), que prueba el grado de precisión de nuestras gramáticas.
Editorial
Authors: Silberztein Max
Published: May 2021

"NooJ es un entorno de desarrollo lingüístico que proporciona herramientas para que los lingüistas puedan construir recursos a fin de formalizar grandes cantidades de fenómenos lingüísticos: tipografía, ortografía, lexicones para palabras simples, uni-dades de palabras múltiples y expresiones discontinuas, morfología flexiva, derivati-va y aglutinante, gramáticas locales, de estructura de frase y de dependencia, así como también gramáticas transformacionales y semánticas. NooJ contiene una rica caja de herramientas que permite a los lingüistas construir, conservar, probar, depu-rar, acumular y compartir recursos. Esto distingue el enfoque de NooJ de la mayoría de las herramientas lingüísticas computacionales que, en general, ofrecen un forma-lismo único a sus usuarios y no son compatibles entre sí..."
Reflexión sobre la incidencia de síndromes dolorosos en alumnos de V cuatrimestre de terapia física de la Universidad Politécnica de Amozoc
Authors: Soriano-Porras Dulce María , Reyes-Sánchez Dulce María , Clila-Luna Alma Belén , Apan-Araujo Karla
Published: May 2021

University of Amozoc of the Bachelor of Physical Therapy during their first and second cycle of training take theoretical subjects, so they stay in the classroom for approximately 6-10 hours for 5 days. of the week, at this time they adopt prolonged and incorrect positions, in addition to this, presenting postural alterations in different anatomical areas, in addition to a BMI that in 48% of the sample indicates overweight and obesity, on the other hand despite having knowledge of the norms of postural hygiene due to the discipline of study these are not applied applications so the objective of this research is to test the relationship between the factors of poor body hygiene, with the appearance of Painful Syndromes, through the evaluation of posture , application of the Nordic musculoskeletal instrument and postural habits to students for the early detection of es t is possible to alter actions that in the future cannot impact in the context of their activities due to the presence of musculoskeletal injuries, for this reason the importance of developing preventive programs implemented at school aimed at postural education is retaken.
EFFECTIVE PROFILE ESTIMATION FOR TRACTOR DYNAMICS ON AGRICULTURAL TERRAINS
Authors: Wang Lijuan, , Yan Jianguo , Xie Shengshi , Wang Chunguang
Published: May 2021

For tractor operation on deformable terrains, accurate terrain profiles are critically needed to determine the dynamic tractor response, which is affected by the terrain roughness. Effective profiles for tractors operating on agricultural terrains were identified in this study. A novel technique, called independent component analysis (ICA), was used to estimate the effective profiles. ICA can use a known system dynamic response (observed signals) to identify road-induced excitation. In this context, tractor wheel vibration signals were used as observed signals, and the ICA method was used to estimate the source signals, which are the effective profiles of the terrain. The proposed approach was validated by comparing the estimated profiles with those measured by a profiling apparatus in the time and frequency domains. The calculated root mean square error RMSE and the relative error Ef between the measured and estimated profiles showed that the proposed approach can be used to accurately estimate road profiles. A group of grass-field roughness data was taken as an example to compare the characteristics of the original and effective profiles, and the parameters of the effective profiles, such as the RMS, roughness index C and waviness W were found to noticeably change during the interaction between the tractor wheel and the terrain soil.
NUMERICAL SIMULATION AND EXPERIMENTAL STUDY OF INNER FLOW FIELD OF SEED PELLETING PREMIXER IN SPOUTED FLUIDIZED BED
Authors: Yi Qiu , Xiaofeng Dai , Zhi Chen , Nianzu Dai , Longkai Mi
Published: May 2021

In order to explore the temporal and spatial distribution and motion state of the grains of wheatgrass (Agropyron) seeds and powder in pelleting process, and to find the optimal inlet air speed of pelleting premixer, the pelleting forming mechanism was revealed. Based on Herz-Mindlin contact theory, the contact mechanics model of seed and powder was established. Besides, CPFD software was used to model and simulate the pelleting premixer, and the contact, collision and friction rules among particles were analysed. The simulation and experimental results show that with the increase of inlet wind speed, the bed expansion increases and the unit volume particle concentration decreases, while the air pressure difference only slightly increases. When the inlet wind speed is set at 3.5 m/s, the atomizing nozzle velocity is set at 4.1 m/s, and the seed coating agent flow rate is 0.36 L/min, the particles are suspended due to air isolation, forming a spouted fluidized bed. It is good for seed and powder contact and rapid prototyping. In this time, the pelleting qualified rate was 95.8%. The results provide theoretical basis and technical support for the research of small irregular seeds pelletizing technology.
ANALYSIS OF THE FIELD EFFICIENCY OF SUGARCANE HARVESTERS
Authors: González-Cueto O. , Castillo-Rodríguez J.A. , Ávalos-Clavelo J.L. , López-Bravo E. , Herrera-Suárez M. , Salcerio Salaberry R.A.
Published: May 2021

Field efficiency is a main factor for obtaining high productivity of agricultural machinery. The aim of this paper was to determine the field efficiency of KTP 2M and CASE IH 8000 sugarcane harvester machines, working with different lengths of cutting fronts. The research was carried out in the Panchito Gómez Toro area of production, belonging to Sugar Enterprise, Villa Clara, during February and March 2020. The main movement times of the harvester inside the field was obtained by stop watch, as well as the fuel consumption during the works. The influence of the length of the cutting fronts on the turning time, time for completing the task and field efficiency were determined according to the sugarcane yield. The results show that lengths of cutting front less than 300 m, represent greater losses in time and higher rate of fuel consumption.Lengths of cutting fronts greater than 500 m, do not represent an increase in field efficiency.
HISTORIOGRAPHY OF GLOBALIZATION IN RUSSIAN AND FOREIGHN SCIENCE
Authors: Vasilyeva V.V.
Published: May 2021

There are a lot of works devoted to the phenomenon of globalization. The presented work examines various theories of globalization processes, both foreign and domestic scientists, from the perspective of various methodological trends and schools. The article considers the key works of the most important authors in the conceptual plan. The idea of common unity was one of the foundations of the ideology of various religious and secular leaders of all times and peoples. Many legendary historical figures had the desire to unite humanity. Solving practical problems: expanding power to new territories, acquiring material goods, they were aware that the unified world should correspond to the unity of perception of the world - either on the basis of law, religion or ideology. The idea of globalization has been widely known since the nineteenth century. Such ideas were based on the fact that the humanity of the planet actually has a common habitat, a single nature and a single goal. Scientific works devoted directly to the analysis of globalization as a phenomenon appeared at the end of the twentieth century and are characterized by a high degree of interdisciplinarity due to the need to describe the phenomenon from different points of view. The concept of "globalization" is extremely wide and has many meanings, it is used to denote the formation of a single market space, the homogenization of the world, the adherence to universal values and the universalization of culture.
SOCIO-CULTURAL CONTACTS OF FOREIGN TRAVELERS IN THE TOBOLSK NORTH IN THE XIX - THE BEGINNING OF THE XX CENTURIES
Authors: Ershov M.F.
Published: May 2021

The publication considers the features of socio-cultural contacts, mainly in the north of Western Siberia. The participants of them were foreign travelers and the local Russian and native population. Travelling in traditional culture and in later times was considered a way out of the ordinary. Memoirs created by educated travelers indicate the existence of sustainable cultural stereotypes. Peoples of the outskirts and especially the indigenous population were perceived as a passive object outside of civilization. The negative impact of the “cultural peoples” leads them to the edge of death. The only way to salvation is assimilation and acceptance of European values. Many travelers such as M. Castrén, A. Ahlquist, O. Finsch, S. Sommier, U. Sirelius, K. Karjalainen, S. Patursson agreed with this position. Their memoirs distort not so much the facts as the picture of the life of aboriginal people. Subjective silence and not quite correct estimates indicate that the archaic or its components were preserved not only in the worldview of the aborigines, but also among a number of highly educated individuals.
THE PHYSICIANS OF GERMAN ORIGIN IN MINING WORKS OF THE URALS IN THE 1ST HALF OF THE 19th CENTURY
Authors: Chernoukhov E.A.
Published: May 2021

The article analyzes the contribution of physicians of German origin in the development of the medical sphere in state and private mining districts in the Urals in the first half of the 19th century. Their active involvement to the service in this distant region in the period under consideration is due to the escalating shortage of qualified specialists in the conditions of the new medical system’s emergence for persons who served directly to the state. The author identified 37 such doctors: the Russian Germans, mainly from the Baltic provinces, and the subjects of the Austro-Hungarian monarchy, and natives of several German states. This was the fifth part of all doctors who served in the mining plants of the Urals in the first half of the 19th century, which is basically more than the representation of other foreigners. This ratio shows the leading positions of the German medical school at that time. The author systematized the materials on the number, level of education, and motives for admission to the service of doctors of German origin, its place and conditions. M. G. Wolf and K. A. Time made the most successful administrative careers, became medical inspectors of the Ural Mining Board. For three decades, they methodically carried out departmental control of the medical sphere of the region’s private mining plants, sought to fulfill the requirements of legislation. The diverse, including administrative, activity of physicians of German origin made a significant contribution to the process of medicalization in the Urals, which is part of a more global process of social modernization.
NEP MODEL OF MODERNIZATION: ON THE ISSUE OF OPPORTUNITIES AND PROBLEMS (ON THE EXAMPLE OF PEASANT-COSSACK FARMS IN THE SOUTH OF RUSSIA)
Authors: Yakhutl Yu.A.
Published: May 2021

The article is devoted to a new economic policy (1921-1929) in the context of interrupted market modernization in the history of Russia and the beginning of a state-planned modernization (end of the 1920s - 1950s). The determining factor in the system of spending reforms of the 1920-s was the level of development of market relations in the agrarian sector of the NEP economy, which was largely determined by the degree of activity of the state and peasant-cossack farms, which capable of implementing food, land and tax policies. One of the conditions for the successful completion of the initiated reforms was the creation of its social base - support of reforms by political allies in the city and the village. It should be noted that the reforms of the 1920-s had their own regional characteristics. Thus, the new economic policy in the south of Russia has acquired lineaments due to special forms of land use, estate relations, and a hidden policy of decossackization by the Bolsheviks. By the mid-1920-s agriculture, as the main branch of the Russian economy, having exhausted its restoration potential, did not have the opportunity to develop independently without financial and organizational assistance from the state, while remaining the main source of socialist accumulation. The formation of new economic relations within the framework of the reforms of 1921-1929 became another attempt in the history of modernization of Russia, including the agricultural sector of the economy, which were forcibly completed by the ruling party through total collectivization.
“THE ELEPHANTS IN THE REAR OF THE PHALANX”: THE BATTLE OF PANION AND COMBINED ARMS WARFARE
Authors: Abakumov A.A.
Published: May 2021

The Battle of Panion (or Panium; c. 200 B.C.), the decisive engagement of the 5th Syrian War, can be described as successful implementation of Combined Arms Warfare in Antiquity; different units of the Seleucid army (infantry, cavalry, war elephants) were used in concert, mutually assisting and protecting each other. Like Hannibal's famous victory at Cannae, this battle exemplifies complete encirclement and total destruction of an enemy army. Nevertheless, its reconstruction is hampered due to discrepancies in the texts of primary sources: the reports of Polybius and Zeno of Rhodes are in conflict, and there is no coherent and detailed description of the battle, including the location of the battlefield and the number of troops. Some historians even consider this reconstruction to be impossible at all. Most renowned (and virtually the only) scenario belongs to Professor Bezalel Bar-Kochva who actually splits this battle into two different «parts», or episodes, on the same battlefield divided by a river. However his scenario is based on a quite shaky foundation - the disputed topographic identification of the battlefield itself. The author of this article makes an attempt to offer a generic reconstruction of the Battle of Panion regardless of the local geographical peculiarities.
SOVIET NATIONAL POLICY OF THE 1920-1930s IN THE PATRIOTIC AND FOREIGN HISTORIOGRAPHY: STAGES, BASIC IDEAS, MODERN TRENDS
Authors: Kamenskikh M.S.
Published: May 2021

This article analyzes the main stages of formation and development of the Soviet national policy of the period of 1920-1930-ies. Learning of the national policy in the USSR has a great historiographical tradition which includes different stages. The article distinguishes 3 stages of Soviet historiography and presents their characteristics. It also highlights the current stage of the study of the national policy of the USSR, which is characterized by a departure from dogmatism and political bias, introduction of previously unavailable unpublished written sources into scientific circulation. Another characteristic feature of modern historiography is the emergence of local studies. As for foreign historiography, it, having more freedom in the interpretation of the facts, however, was also influenced by the ideas of opposition, inherent for the period of the “Cold war” for a long time. A large number of studies of Soviet national policy appeared during the USSR disintegration, which many authors considered as a consequence of the national policy of the USSR. Only in the last 30 years, foreign authors begin to aspire to reassessment of the prewar terminology and introduce new concepts into scientific turnover (for example, “the USSR as a communal apartment”, “the USSR as an Empire of a affirmative nation”, “National policy as a compromise between the elites of the center and the regions”, etc ). The article notes that interest to the topic of Soviet national policy has slightly decreased in recent years. This topic is becoming less politically biased, which creates favorable conditions for joint research of Russian and foreign scientists.
QUICK NON-DESTRUCTIVE ANALYSIS OF CONDENSED LIGNIN BY FTIR. PART 2. PULP SAMPLES FROM ACID SULFITE COOKING
Authors: FISKARI JUHA , DERKACHEVA OLGA , KULOMAA TUOMAS
Published: May 2021

"In our previous work, we demonstrated how lignin condensation and precipitation taking place in kraft pulping can be
detected and even quantified by Fourier Transform Infrared (FTIR) spectroscopy. Because lignin reactions in acid
sulfite pulping are very different from those occurring during kraft cooking, a new analysis method is proposed to
rapidly analyze the condensed lignin in acid sulfite pulp. This kind of analysis is useful for sulfite pulp mills to detect
the elevated risk of black cook. This paper presents and discusses the novel method using FTIR spectroscopy to rapidly
analyze lignin condensation in softwood pulp samples from acid sulfite processes. Several softwood pulp samples from
acid sulfite pulping at varying levels of condensation were included in this research. According to the results, FTIR
spectroscopy allows indirect quantification of lignin condensation in a difficult matrix of wood constituents, such as in
incompletely delignified acid sulfite pulp."
CHLORINE DIOXIDE BLEACHING OF PULP FROM CROP RESIDUES: BAGASSE, KASH AND CORN STALKS
Authors: FERDOUS TASLIMA , HOSSAIN MD. IMRAN , NANJIBA MOUMITA , QUAIYYUM M. A. , JAHAN M. SARWAR
Published: May 2021

"This investigation describes the effect of hot chlorine dioxide delignification (DHT) of bagasse, kash and corn stalk pulps on pulp properties and effluent quality. The pulps were subjected to DHT at 85 °C for 45 min and the results were compared with those of the D0 process carried out at 70 °C for 45 min. The kappa numbers after the alkaline extraction (Ep) stage in DHT bleaching were always lower and brightness was higher, compared to the corresponding parameters in D0 bleaching, without impacting pulp viscosity. The final brightness of the corn stalk pulp was 84.8% at a kappa factor of 0.25 in the D0 process, while in the DHT process, the same type of pulp reached the brightness of 87.2% at a kappa factor of 0.15, saving 40% ClO2 in the first stage. Similarly, kash pulp exhibited 90% brightness at a kappa factor of 0.15, which also saved 40% ClO2, compared to the conventional D0 process. The brightness of bagasse pulp in DHT and D0 processes was almost similar. Oxygen delignified pulp had a lower effluent discharge than unbleached pulps in subsequent ECF bleaching. The COD value in DHT was lower than that in D0."
CRACKING PHENOMENA OF COATINGS ON LABEL PAPERS
Authors: BRESKVAR KAJA , AHTIK JURE , MOŽINA KLEMEN
Published: May 2021

"The phenomenon of paper coating cracking when folded was studied. Coating mixtures were compared according to
their composition, applied on different base paper, to find which combinations of the constituents of the base paper and
the paper coating results in a lower tendency towards fold cracking of the coating layer. It was shown that the
appropriate selection of pigments (calcium carbonate, kaolin) and binders (starch, latex), whose elastic behavior
extensively influences the deformation of paper under physical and mechanical stress, is of central importance. The
choice of the base paper plays a significant role as well, it should have the longest and the most numerous cellulose
fibers possible in order to avoid fiber breaks and inter- and intra-fiber connections. The content of inorganic substances
has the greatest negative effect on deteriorating the physical-mechanical properties of the studied label papers, leading
to the deposition of inorganic substances at the joints between the cellulose fibers and reducing their bonding."
ENHANCEMENT OF DYE ABSORPTION OF COTTON FABRIC THROUGH OPTIMIZATION OF BIOPOLYMER TREATMENT
Authors: VERMA MONA , GAHLOT NEHA , SINGH SAROJ S. J. , ROSE NEELAM M.
Published: May 2021

"Environmental pressure is pushing towards the ‘green’ alternatives to synthetic or petro-chemically derived products. Biopolymers are replacement materials suitable for different chemical processes. The surface modification of textile fibres using biopolymers is considered as the best route for modern textile treatments, to minimize the generation of wastewater containing salts, unfixed dye and other chemicals, which may affect the environment and human health. To avoid these problems, the pretreatment of cotton with biopolymers is a safe option in eco-friendly dyeing. In the present work, chitosan was selected for application on cotton textile for improving its dyeing efficiency with natural dye (onion skin). Chitosan is a versatile polycationic polysaccharide possessing hydroxyl and amino functional groups, which can easily be fabricated with desired functional properties. The chitosan treatment was standardized on the basis of dyeing properties, such as percent dye absorption, colour strength (K/S) and wash fastness. When the chitosan treatment was applied with optimized parameters, it was found that the chitosan treated onion skin dyed fabric showed higher dye absorption (66.17%), colour strength (16.52) and wash fastness rating than the alum treated dyed fabric. Thus, the chitosan treatment enhanced the dyeing properties of cotton fabric towards the application of natural dye (onion skin), without using any metallic salt. To conclude, the chitosan treatment is a safe and environmentally benign route to improve the natural dye absorption of cotton fabrics."
SYNTHESIS, CHARACTERIZATION AND ADSORPTION STUDIES OF PHOSPHORYLATED CELLULOSE FOR THE RECOVERY OF LITHIUM FROM AQUEOUS SOLUTIONS
Authors: KEMAL RECEPOGLU YASAR , YÜKSEL ASLI
Published: May 2021

"In this study, pristine cellulose was functionalized by the phosphorylation reaction to make it suitable for lithium separation. After characterization studies of the synthesized adsorbent with SEM, EDX, FTIR, TGA and XPS, the effects of various parameters on the lithium uptake capacity of the adsorbent were examined. The analysis of equilibrium data by several adsorption models showed that maximum adsorption capacity of the adsorbent was found to be 9.60 mg/g at 25 °C by the Langmuir model. As initial concentration and contact time increased, adsorption capacity also increased, however, mild temperature (25-35 °C) and pH (5-6) were better for the adsorption of lithium. 80% of lithium adsorption within three minutes proved the fast kinetic nature of the adsorbent. A 99.5% desorption efficiency of lithium was achieved with 0.5 M H2SO4, among HCl and NaCl with different molarities. Phosphorylated cellulose was shown to be a favorable adsorbent for the recovery of lithium from aqueous solutions."
GRAPHENE OXIDE FUNCTIONALIZED BY ETHYLENE DIAMINE TETRAACETIC ACID (EDTA) BY A HYDROTHERMAL PROCESS AS AN ADSORBENT FOR NICKEL IONS
Authors: TOHAMY HEBAT-ALLAH S. , KAMEL SAMIR , EL-SAKHAWY MOHAMED
Published: May 2021

"Graphene oxide (GO) from sugar cane bagasse (SCB/F) was treated with EDTA to produce modified GO (EGO) by a
hydrothermal preparation reaction. Raman spectra showed an intensity ratio of ID/IG for SCB/F and EGO8:1
(EDTA:GO 8:1) of 0.598 and 0.391, respectively. FTIR spectra confirmed the introduction of nitrogen-containing
groups into the SCB/F backbone. SEM analysis demonstrated the porosity character for the sample. The TGA/DTA
results implied the EGO8:1 sample was less thermally stable than SCB/F. The Ni2+ adsorption study revealed a steadily
increasing adsorption of Ni2+ until 45 min, with no noticeable increase in adsorption after that. The results of kinetic
modeling, adsorption isotherms, and thermodynamic parameters showed that the pseudo-second-order models gave a
better fit to the adsorption data of the SCB/F and EGO samples. Also, the adsorption data fitted the Langmuir model
best, and the negative values of G indicated that the sorption process was spontaneous."
A difference method with semi-analytical approach for achieving accuracy in optical gaps of 2D materials using exciton model in fractional space
Authors: Ahmad Shahzad , Zubair Muhammad , Jalil Osama , Younis Usman
Published: May 2021

A semi-analytical approach for the difference method using numerically calculated G0W0 band gaps and analytically calculated exciton binding energies based on the fractional Coulomb potential model is proposed to calculate optical gaps of 46 2D materials ranging from ultra-violet to infrared region. The suggested methodology is compared with difference methods of a similar hybrid approach, utilizing conventional exciton models based on Wannier–Mott theory to achieve a significant reduction in the average relative mean square error of optical gaps, up to one-third, benchmarked with a fully numerical approach, employing G0W0 band gaps and the state-of-the-art Bethe–Salpeter equation for binding energy calculation.
Investigation of weight initialization using Fibonacci Sequence on the performance of neural networks*
Authors: Sinha Mukherjee Dipanwita , Yeri Naveen
Published: May 2021

Initializing weights are important for fast convergence and performance improvement of Artificial Neural Network models. This study proposes a heuristic method to initialize weights for Neural Network with Fibonacci sequence. Experiments have been carried out with different network structures and datasets and results have been compared with other initialization techniques such as Zero, Random, Xavier and He. It has been observed that for small sized datasets, Fibonacci initialization technique reports 94% of test accuracy which is better than Random (85%) and close to Xavier (93%) and He (96%) initialization methods. Also, for medium sized dataset, we have noted that performance of Fibonacci weight initialization method is comparable with the same for Random, Xavier and He initialization techniques.
Adversarial examples attack based on random warm restart mechanism and improved Nesterov momentum
Authors: Li Tiangang
Published: May 2021

The deep learning algorithm has achieved great success in the field of computer vision, but some studies have pointed out that the deep learning model is vulnerable to attacks adversarial examples and makes false decisions. This challenges the further development of deep learning, and urges researchers to pay more attention to the relationship between adversarial examples attacks and deep learning security. This work focuses on adversarial examples, optimizes the generation of adversarial examples from the view of adversarial robustness, takes the perturbations added in adversarial examples as the optimization parameter. We propose RWR-NM-PGD attack algorithm based on random warm restart mechanism and improved Nesterov momentum from the view of gradient optimization. The algorithm introduces improved Nesterov momentum, using its characteristics of accelerating convergence and improving gradient update direction in optimization algorithm to accelerate the generation of adversarial examples. In addition, the random warm restart mechanism is used for optimization, and the projected gradient descent algorithm is used to limit the range of the generated perturbations in each warm restart, which can obtain better attack effect. Experiments on two public datasets show that the algorithm proposed in this work can improve the success rate of attacking deep learning models without extra time cost. Compared with the benchmark attack method, the algorithm proposed in this work can achieve better attack success rate for both normal training model and defense model. Our method has average attack success rate of 46.3077%, which is 27.19% higher than I-FGSM and 9.27% higher than PGD. The attack results in 13 defense models show that the attack algorithm proposed in this work is superior to the benchmark algorithm in attack universality and transferability.
Privacy-Aware Laser Wireless Power Transfer for Aerial Multi-Access Edge Computing: A Colonel Blotto Game Approach
Authors: Zhang Long , Wang Yao , Min Minghui , Guo Chao , Sharma Vishal , Han Zhu
Published: May 2021

Multi-access edge computing (MEC) has been recently considered in challenging environments lacking available terrestrial infrastructures by extending the computing resources to the air for further enhancing the computation capability of the new aerial user equipment (AUE). Additionally, wireless power transfer (WPT) is a promising solution to prolong the battery lifetime of energy-constrained wireless devices like AUEs. In this paper, we investigate the integration of laser-beamed WPT in the high-altitude platform (HAP) aided MEC systems for the HAP-connected AUEs. By discretizing the three-dimensional coverage space of the HAP, we present a multi-tier tile grid-based spatial structure to provide aerial locations for laser charging. With this setup, we identify a new privacy vulnerability caused by the openness during the air-to-air transmission of WPT signaling messages in the presence of a terrestrial adversary. A privacy-aware laser-powered aerial MEC framework is developed that addresses this vulnerability and enhances the location privacy of AUEs for laser WPT. Specifically, the interaction between the HAP as a defender and the adversary in their tile grid allocation as charging locations to AUEs is formulated as a Colonel Blotto game, which models the competition of the players for limited resources over multiple battlefields for a finite time horizon. Moreover, we derive the mixed-strategy Nash equilibria of the tile grid allocation game for both symmetric and asymmetric tile grids between the defender and the adversary. Simulations results show that the proposed framework significantly outperforms the design baselines with a given privacy protection level in terms of system-wide expected total utilities.
Digital Twin Simulation of Connected and Automated Vehicles with the Unity Game Engine
Authors: Wang Ziran
Published: May 2021

A Digital Twin is defined as a digital replica of a real entity in the physical world. In this study, the Digital Twin simulation is developed for connected and automated vehicles (CAVs) by leveraging the Unity game engine. A Digital Twin simulation architecture is proposed, which contains the physical world and the digital world. Particularly, the digital world consists of three layers, where the Unity game objects are built to simulate the "hardware", the Unity scripting API are used to simulate the "software", and external tools (e.g., SUMO, MATLAB, python, and/or AWS) are leveraged to enhance the simulation functionalities. A case study of personazlied adaptive cruise control (P-ACC) is conducted to showcase the effectiveness of the proposed Digital Twin simulation, where the ACC system can be designed to satisfy each driver's preference with the help of cloud computing.
Quantitative Cooperation Analysis among Cross-chain Smart Contracts
Authors: Su Hong
Published: May 2021

In cross-chain scenarios, there are different blockchains, which need to cooperate. Cooperation among different blockchains is done by smart contracts that work together to complete cross-chain tasks. When numerous cooperative smart contracts are involved, smart contracts form a complex interaction network, which makes it difficult to evaluate the cooperation. It needs a common model to quantitatively analyze the cross-chain cooperation of associated smart contracts. In this paper, we model the cooperation among smart contracts as conditions and their corresponding actions, the condition-trigger model. Then we propose the method to calculate the cooperation probabilities by the graph weight. As the edge weight lacks the information of interaction probabilities, we introduce the dimension of the edge weight to calculate the probabilities. Finally, we verify the proposed condition-trigger model and its different types. It demonstrates that our proposed methods can effectively analyze the cross-chain cooperation among smart contracts.