bluuebunny/crossref_metadata_2025 huggingface dataset:
La doble cara de la doble hélice
Authors: Suero María
Published: June 2023

“La doble hélice” es un relato de James Watson, publicado en 1968, donde describe la serie de sucesos e hitos que llevaron al descubrimiento de la estructura del ácido desoxirribonucleico (ADN), la “molécula de la vida”. El Premio Nobel de Fisiología y Medicina fue otorgado a James Watson, Francis Crick y Maurice Wilkins unos años antes de que James Watson publicara sus memorias. Sin embargo, ahí no acaba la historia. Esta reseña es un breve comentario sobre el libro y la verdad detrás del Premio Nobel de Fisiología y Medicina de 1962.
Dolor musculoesquelético, tiempo sedentario y actividad física en jugadores aficionados de deportes electrónicos. Estudio piloto.
Authors: Aguilar Reguero Jose Luis
Published: June 2023

Objetivo: Conocer el grado de Actividad Física que realizan los jugadores aficionados a la práctica de los e-sports, el tiempo que dedican a actividades sedentarias y comprobar si estos aspectos se relacionan con la presencia de dolores articulares y musculares que les puedan afectar en su vida cotidiana. Método: Nº de participantes=139 participantes (20 mujeres) realizaron una encuesta online que incluía el Cuestionario Nórdico de Kuorinka (1987), el Cuestionario Internacional de Actividad Física (IPAQ) y preguntas de carácter sociodemográfico y de variables antropométricas entre los meses de enero y abril de 2021. Variables independientes: género, edad, IMC, tiempo sentado y METs semanales. Variables dependientes: respuestas en el Cuestionario Nórdico de Kuorinka (1987) y las preguntas de carácter sociodemográfico y antropométricas. Los métodos estadísticos utilizados fueron la prueba de normalidad de Kolmogorov-Smirnov, la prueba no paramétrica de U de Mann-Whitney, la prueba no paramétrica de correlación de Rho Spearman y como estadístico de tamaño del efecto, la D de Cohen. Resultados: La mayor parte de molestias fueron en la zona lumbar y cervical. Media de horas sentados=7.26h/día, bajo nivel de AF (590.42 METs), IMC normal pero próximo a sobrepeso (24.98). Correlaciones estadísticamente significativas entre tiempo sentado y METs (rs=‐0,312, p<0.00), y dolor en zona lumbar con zonas cervical (rs=‐0,329, p<0.00) y hombro (rs=‐0,363, p<0.00). Finalmente, no hay diferencias significativas entre hombres y mujeres en el tiempo sentado, pero si en las puntuaciones de dolor de muñeca y mano [U=857.000; p=0.0015]. Conclusiones: 1) La cantidad de horas que pasan sentados al día los participantes del estudio se encuentran próxima a otros estudios siendo similares. 2) Los participantes sufren más molestias en la zona lumbar y cervical que en las zonas del hombro, las muñecas o el antebrazo con un mayor porcentaje en el grupo de mujeres. 3) No se encontraron correlaciones entre las horas de juego y las dificultades diarias para las actividades, el trabajo, los estudios, el deporte, manejar el ordenador y entrenar o competir en e-sports.
Differences between functional movement screen and somatotype to young handball and volleyball players
Authors: Joksimovic Marko , Goranovic Kosta , Kukric Aleksandar , Niksic Elvira , Grgic Lana , Zlojutro Nemanja
Published: June 2023

Introduction. Handball and volleyball are among the world's popular sports, which are played practically in every country at different levels of competition. The aim of this study was to determine the differences in somatotype and morphological characteristics between young handball players and volleyball players as well as the differences in the results of functional body mobility tests between the tested groups. Material and Methods. The research included a sample of 23 female athletes who were divided into two subsamples, as follows. A total of 12 athletes were from the Handball team and a total of 11 athletes were from the Volleyball team.  The following anthropometric measurements were conducted: Height and body mass, four skinfolds (triceps, subscapular, supraspinal and calf), breadths (humerus and femur diameters) and girths (arm and calf). Body mass (kg) and body fat (%) of the subjects were measured by the method of bioelectrical impedance (TANITA 545N) with an accuracy of 0.1 kg. Functional Movement Score is a scanning system which includes seven steps (i.e., deep squat, hurdle step, in-line lunge, shoulder mobility, active leg raise, trunk stability push-up, and rotary stability). Results. The results of the study in female handball players recorded a higher percentage of body fat and body mass index compared to female volleyball players (p <.05), while no statistically significant difference was recorded in body weight and height. Analyzing the somatotype of players, it is noticeable that handball players have higher values of endomorphism and mesomorphism, while volleyball players have higher values of ectomorphism. Statistically significant differences were observed in mesomorph and ectomorph (p <.001). In the Functional Movement Screen test, it was noticeable that statistically significant differences were recorded in the two variables (Shoulder mobility and trunk stability push up) in favor of the volleyball players, as well as in the overall standings, while in the other variables no statistically significant difference was recorded. Conclusions. Determining somatotype must occupy the attention of coaches who work with young athletes. Movement-based assessment serves to pinpoint functional deficits (or bio-markers) related to proprioceptive, mobility and stability weaknesses.
Plataforma de autoavaliação de competências docentes digitais
Authors: Dos Santos Perin Eloni , Duarte Freitas Maria do Carmo , Ritta Coelho Taiane
Published: June 2023

A educação passa por transformação, com o uso massivo da tecnologia digital em atividades de ensino e aprendizagem e, nesse caso, identificar competências docentes digitais é uma demanda social. Para isso, foi desenvolvida uma Plataforma para identificação e gerenciamento de informações, chamada CDD-EB, que armazena de forma sintetizada, um modelo para autoavaliação de Competências Docentes Digitais (CDD). O Modelo CDD-EB utiliza rubricas que guiam o professor em um processo de autoavaliação, em que posibilita processo de autorreflexão individual e devolve em forma de feedback na própria plataforma, um resumo com o perfil de CDD, com base nas escolhas realizadas pelo docente. O modelo de autoavaliação foi validado por especialistas, inserido na Plataforma CDD-EB e testado por professores da educação básica. Os testes estatísticos de validade, pelo IVC e CVC e confiabilidade pelo Alfa de Cronbach confirmam a potencialidade da Plataforma como ferramenta de identificação de competências docentes digitais.
Life history of Neoseiulus agrestis (Karg) (Acari: Phytoseiidae) fed on the storage mite, Thyreophagus sp. (Acari: Acaridae) at different temperatures
Authors: Moradi Maryam , Misharova Yana V. , Snigirev Vladislav V. , Döker Ismail , Joharchi Omid , Khaustov Vladimir A.
Published: June 2023

The development and life history parameters of Neoseiulus agrestis feeding on the storage mite, Thyreophagus sp., were studied at three different temperatures of 20, 25, and 30 °C. The results show that juvenile development and oviposition period as well as reproductive potential of this predatory mite are significantly affected by the temperature. The development times of immature and the life expectancy of adults ranged from 11.36 to 6.06 days and 58.71 to 38.65 days, respectively, depending on the temperature. The average total number of eggs laid per female at 20 °C (27.21), 25 °C (46.38), and 30 °C (61.12) differed significantly from each other. The highest net reproductive rate (R0) was 51.95 (offspring/individual) at 30 °C, although there was no significant difference from that obtained at 25 °C (37.10). Furthermore, the highest intrinsic rate of increase (rm) is 0.286 day-1 at 30 °C. Moreover, the highest finite rate of increase (λ = 1.331 day-1) and the shortest mean generation time (T = 13.786 days) and doubling time (DT = 2.418 days) were also determined at 30 °C. Our results indicate that N. agrestis successfully completed immature development and can survive and reproduce at all temperatures tested. However, a number of biological traits of this predator are affected by the temperature on this food source. Finally, a temperature of 30 °C seems to be more suitable for mass rearing of this predator on Thyreophagus sp. Further studies should be carried out to determine the biological characteristics and life cycle parameters of N. agrestis on various important pests such as spider mites, whiteflies and thrips.
A Spatiotemporal Survey of Tikjda Forest Dynamics Over A 34-Year Period by Aerial Photographs
Authors: Dib Tassadit , Said Samir Ait , Krouchi Fazia
Published: June 2023

Obtaining accurate forest cover information and dynamics of land occupation, through time, such as the spatial extent and pattern of disturbance and recovery is essential knowledge and assistance for forest managers and a crucial basis for the protection and conservation of current forest resources. Because most recent researches have focused on forest field survey and monitoring, a land classification containing information on forest cover dynamics is critically needed. Over the last decades, advances in remote sensing technology have enabled an accurate classification of different land covers from several sensors and remotely sensed data. We presently retained Tikjda forest (Djurdjura southerner, Algeria) as a case study to investigate the possibility of aerial photos classification and to analyze the historical dynamics of the area using a change detection analysis of multi-temporal data. To classify the study area’s main cover types, we used photographs collected over a period of 34 years (i.e., from 1983 to 2017). The results revealed that in 2017, Tikjda forest was composed of forest areas (24.1%), degraded areas (49.7%), and barren areas (26.2%). Throughout the investigated period, the analysis revealed a notable increase in barren areas (+9.8%), and degraded areas (+14.4%), While forest areas experienced a significant decrease (−24.2%). Moreover, the results confirm the potential of aerial photographs for an accurate classification of forests.
Comparative Study of the Lightening of Concrete Through the Use of Recycled Tire Rubber and Expanded Clay Aggregate
Authors: Djebien Rachid , Kebout Rachid , Bouabaz Amel
Published: June 2023

The waste of tire rubber is characterized by the generation of huge amounts, which is annually discarded. This waste causes problems for human health and the environment. Thus, the valorization of recycled tire rubber in concrete production is considered as an alternative and sustainable solution. This experimental work is a comparative study, which aims to investigate the possibility of using recycled tire rubber as a fine aggregate in the production of lightweight concrete. To achieve this objective, two types of lightweight concrete containing (35, 70 and 100%) of expanded clay and (5, 10 and 15%) of recycled tire rubber as a fine aggregate were produced. Their fresh properties were investigated using slump, density and air content tests, while the hardened properties were investigated by compressive strength, flexural strength, ultrasonic pulse velocity, and water absorption tests. The results obtained showed that the utilization of both expanded clay aggregate and recycled tire rubber leads to a reduction in density and mechanical strength but increases the porosity of lightweight concrete. However, the lightweight concrete containing the expanded clay aggregate had a higher efficiency factor than those containing recycled tire rubber.
The portrait of an imperfect person in contemporary Japanese and the means of conveying it in Russian: a study of the collocations with the word 残念 zannen
Authors: Sumskaya N. V.
Published: June 2023

This article focuses on the word 残念 zannen and its transformed meaning in contemporary Japanese. Initially having the semantics of regret and used in reaction to an undesired outcome, 残念 zannen has come to be used in describing human flaws. The paper analyses the definitions of 残念 zannen in Japanese dictionaries and highlights the key semantic components that are not revealed in its Russian equivalents “вызывающий сожаление” (“regrettable”) and “досадный” (“disappointing”). The paper identifies the features that determine the dividing line between 残念 zannen and a closely related notion ダメ dame with regard to the description of a person. 残念 zannen is subsequently studied in the Japanese Internet discourse. The paper analyzes its semantics in collocations with the words 人 hito (person), 美人 bijin (beauty) and イケメン ikemen (handsome man), reveals the features linked to 残念 zannen, and provides their possible translations into Russian. The semantic components identified in the Japanese dictionary definitions and in discourse analysis are then used to translate the word 残念 zannen in contexts. Where possible, the translation of the word combination 残念 zannen-na hito into Russian should reflect the semantics of disappointment, imperfection, and the possibility for improvement, whereas the translated collocations 残念な美人 zannen-na bijin and 残念なイケメン zannen-na ikemen should convey the semantics of the conflict between the good looks and a flawed personality. The literal interpretation of 残念 zannen is inappropriate from both stylistic and semantic points of view, which can be compensated by translation transformations, such as concretization and loss-of-meaning compensation. The article is intended for Japanologists, cultural linguists, and translators, as well as Japanese language instructors and students.
Syntactic independent sentence without illocutive force
Authors: Averina A. V.
Published: June 2023

The article deals with the factors which influence the illocutionary force of the sentence. The syntactically independent sentences are in the focus of the discussion. It is shown that illocutionary force is formed by three factors: communicative binary, semantics of the sentence and temporal reference. They are universal. At the level of the deep structure, sentences, which have illocutionary force include three components: topic, focus and modality. The presence of modal component is not possible without the topic. Sentences without any illocutionary force do not have topicalized components and are incompatible with modal indicators. At the level of the surface structure the absence of illocutionary force is marked by the displacement of the predicate to the initial position, the position of the subject after the predicate or the monomial structure of a sentence. Sentences devoid of illocutionary force in the Russian language are always marked. In German the word order is fixed, therefore, in communicatively monomial sentences, the “shift” of the verb to the first position and the displacement of the referential subject is carried out by using the formal subject es in the preposition. In English, in this case, the initial elements there or it can be used. In proposals of this type, local and time indicators are often shifted to the initial position. Neither local nor temporal indicators can be the subject of a statement: at the beginning of a sentence they mark the absence of illocutionary force. Sentences devoid of illocutionary force serve as the background of the main narrative in the text or initiate the text. At the level of semantics, the sentences of this type are characterized by providing descriptions of nature, weather, situation, state, or act as introductory sentences in microtext or text. When describing states and characteristics, we mostly refer to permanent signs or properties of objects/objects/phenomena in the environment. The factors that shape the illocutionary force of a sentence are universal.
Каменные скребки Курманаковской IV стоянки позднего бронзового века в Нижнем Прикамье: морфолого-функциональный анализ
Authors: Голубева Екатерина Николаевна , Лыганов Антон Васильевич
Published: June 2023

Скребки как категория каменного инвентаря культур позднего бронзового Приказанского Поволжья и Приустевого Прикамья слабо освещены в обобщающих исследованиях. Обычно в литературе приводятся только количественные показатели морфологически выраженных каменных орудий, происходящих с территории поселений. В данной статье предложен морфолого-функциональный анализ каменных скребков, происходящих преимущественно из жилища 1 Курманаковской IV стоянки. По керамическому материалу выделены четыре культурно-хронологических горизонта. При этом основной горизонт, связанный с постройкой комплекса жилищ на этой территории, приходится на XIV–XIII вв. до н.э., относится ко времени существования культуры текстильной керамики и атабаевского этапа маклашеевской культуры. Судя по выявленным аналогиям и планиграфии, большинство скребков были связаны именно с этим культурно хронологическим горизонтом. В результате морфолого-функционального анализа среди скребков были выделены пять морфологических групп. Функционально скребки были разделены на скребки по мягкому материалу (шкура) и скребки по твердому материалу (дереву). Трасологическое исследование позволило увеличить число функциональных типов скребков и выявить среди них комбинированные орудия.
Хронологическое соотношение культурных традиций бронзового века в Южном Зауралье (срубно-алакульские и черкаскульские древности)
Authors: Епимахов Андрей Владимирович , Пантелеева Софья Евгеньевна , Корякова Людмила Николаевна , Краузе Рюдигер , Столарчик Элиза
Published: June 2023

Статья рассматривает вопросы хронологии двух культурных традиций бронзового века Южного Зауралья, слабо обеспеченных радиоуглеродными датами. Стратиграфия и комплекс артефактов (главным образом, керамики) позволили выделить два этапа истории поселения Коноплянка 2 (срубно-алакульский и черкаскульский). Серия из тринадцати образцов включает один статистический выброс, девять срубно-алакульских и три черкаскульские даты. Методами байесовской статистики создана двухфазная хронологическая модель, определена хронология этапов и оценена длительность каждого из них. Срубно-алакульский этап укладывается в XVIII в. до н.э. (медианы граничных интервалов), черкаскульский относится к XVII–XVI вв. до н.э. Хронологический разрыв между этапами составил более полувека. Новые данные хорошо соотносятся с региональной системой периодизации. Срубно-алакульские даты относятся к пост-синташтинскому периоду, а черкаскульские предшествуют межовско-саргаринскому. Однако черкаскульская серия AMS-дат целиком относится к степной части ареала культуры, поэтому выводы не могут быть экстраполированы на другие территории, следовательно, вопрос о происхождении данной культуры остается открытым.
Удила из погребения 86 Камышлы-Тамакского I могильника: к вопросу о ранних комплексах пьяноборской культуры
Authors: Красноперов Александр Анатольевич , Камалеев Эльвир Винерович
Published: June 2023

В статье рассмотрены находки удил очень редкого для пьяноборской культуры типа – с С-видными псалиями. Такие удила достоверно обнаружены всего в двух комплексах – Камышлы-Тамак, п.86 и Урманаево II, п.8. В причерноморских памятниках С-видные псалии делятся на две хронологические группы: ранние паслии, с сильным С-образным изгибом стержня, и поздние, с более прямым стержнем. Обе «пьяноборские» находки относятся ко второй подгруппе, но к разным вариантам. Псалий из Урманаево II, п.8 соответствует очень редкому варианту с уплощенной нижней лопастью, известному только в двух комплексах. С-видные псалии с относительно прямым стержнем характерны для так называемых «странных комплексов» или «кладов» второго периода их бытования – II–I вв. до н.э., ареал которых охватывает большую часть северного Причерноморья, включая нижнее и среднее Подонье и Кубань. Рассмотренные погребения – Камышлы-Тамак, п.86 и Урманаево II, п.8 – датируются в пределах II в. до н.э. и являются одними из самых ранних в пьяноборской культуре.
Б.С. Жуков – лидер московской палеоэтнологической школы (по материалам переписки с А.М. Тальгреном)
Authors: Кузьминых Сергей Владимирович
Published: June 2023

Б.С. Жуков и А.М. Тальгрен принадлежат к числу ключевых фигур в российской, финской и европейской археологии 1920-х годов. Основоположником палеоэтнологического направления исследований в Московском университете стал Д.Н. Анучин с его известной триадой – синтезом доисторической археологии, антропологии и этнографии. Жуков, его ученик, в начале 1920-х гг. пошел дальше и на практике воплотил идеи учителя, предложив исследовательскую программу и объединив коллектив молодых ученых – археологов, антропологов, этнологов, специалистов других научных дисциплин. Жуков как лидер палеоэтнологической школы не просто воспринял анучинскую идею о междисциплинарном подходе к изучению человека в его прошлом и настоящем, а осуществил ее в ходе масштабных комплексных экспедиций и глубоких научных исследований. Школа Жукова как научное направление развивалась непродолжительное время в середине и второй половине 1920-х годов. В ней выросло поколение археологов, антропологов и этнологов, внесших неоценимый вклад в развитие российской и мировой науки. Именно к этим вопросам и обращена настоящая статья. В ее основу легла переписка Б.С. Жукова с финским археологом А.М. Тальгреном.
Б.С. Жуков и его исследовательский подход к изучению древностей IV–I тыс. до н.э. лесной зоны Восточной Европы
Authors: Лопатина Ольга Анатольевна
Published: June 2023

В статье рассмотрены методологические подходы в научном творчестве Б.С. Жукова, одного из ярких представителей российской археологии 20-х гг. 20 в. Показаны основные принципы палеоэтнологического направления, в русле которого он работал. Дан обзор выступлений ведущих российских этнологов и палеоэтнологов на Совещаниях 1926 и 1927 гг. Подчеркивается, что основные обсуждаемые там проблемы были связаны с разработкой культурно-исторического метода. Обобщены основные положения главной работы Б.С. Жукова «Теория хронологических и территориальных модификаций…» 1929 г. Дается высокая оценка этой работе, которая, во-первых демонстрировала определенные методы аналитической работы с источниками, во-вторых, приводила в систему обширный материал IV–I тыс. до н.э. преимущественно с территории лесного Поволжья. Рассмотрены новаторские приемы обработки керамических коллекций, введенные Б.С. Жуковым.
Moral Clauses in Contracts: An Iraqi Law Perspective
Authors: Manhal Ali Hussein
Published: June 2023

Purpose: In this research, I want to address the moral clauses in contracts concluded by employers with talents and celebrities to promote goods and services. I want to define the meaning and use of these clauses in USA, and answer whether they are acceptable in Iraqi law.
 
Theoretical framework: In USA, moral clauses used since the twenties of the last century and adopt widely in its sixties until now, it used in contracts relating provide work or service by a talent or celebrity and contracts of sponsorship. Moral clauses refer to conducts that talent prohibited from doing such as lying, violating laws, or corruption. Breaching of these clauses may result in termination of contract, or oblige talent to pay damages.
 
Method: This research follows a comparative analytical approach between the American and Iraqi laws regarding moral clauses, showing their meaning, importance and effects.
 
Result and conclusion: This research concluded that moral clause valid in Iraqi law, because it not violate public order or morals.
 
Implications of the research: The research provides a ground for talents, celebrities, contractors, and employers to be aware of their rights and duties regarding moral clauses, the way these clauses formulate in contract, and how to deal with breach of it.
 
Originality/value: Moral clauses not previously dealt with in Iraq, so this research paves the way for other researchers to delve into these clauses.
The Employee’s Right to Work Offline: A Comparative Analysis of Legal Frameworks in Different Countries
Authors: Kolomoets Elena , Shoniya Guri , Mekhmonov Sultonali , Abdulnabi Shuaib , Karim Nihad Abdul , Mohammad Tuqaa Abid
Published: June 2023

Purpose: In the digital age, many employees are pressured to be constantly connected to work through various technological devices.   Method: The study analyzes the legal frameworks in France, Italy, Spain, Germany, and the United States. The analysis is based on a review of relevant legislation, case law, and scholarly literature. In the procedure of writing the work, such approaches as: analysis, mixture, data review were used.   Results and conclusion: The right to disconnect or work offline has emerged as a legal concept that seeks to protect employees from the negative consequences of being constantly connected to work. It has led to a growing concern about the impact of digital technologies on employee well-being and work-life balance. This article compares the legal frameworks governing employees' right to work offline in different countries. The findings suggest that legal frameworks can play an important role in promoting work-life balance and employee well-being and that international cooperation and exchange of best practices may help to develop more effective legal frameworks to address the challenges of the digital age.   Research implications: The study highlights the differences and similarities in legal approaches and discusses the implications for employee well-being and productivity.   Originality/value: We have to learn the lesson of the pandemic and systematically approach the use of digital opportunities to develop students' competencies. We tested our abilities in difficult conditions, identified weaknesses and became more aware of our values. In this regard, the experience gained by universities is evaluated positively. It will certainly contribute to development.
Impact of Online Science Learning on Children Aged 5-6 During the COVID-19 Pandemic: A Case Study at Barunawati Kindergarten 3 Samarinda
Authors: Palenewen Evie , Dewi Audiya Tamara , Rozie Fachrul
Published: June 2023

The objective of this research is to provide a depiction of the effects of online science education on children between the ages of 5 and 6 amidst the COVID-19 pandemic, specifically in relation to the development of science learning abilities in this age group. This research aims to investigate the challenges and barriers encountered during the execution of science education for children aged 5–6 years at Barunawati 3 Samarinda Kindergarten. The research employs a case study methodology, which centers on the individuals involved in a particular teacher's online science learning case, as a means of adapting to crisis situations. The Barunawati 3 Samarinda Kindergarten has been accredited as "Good" based on the school's established criteria for evaluation. The study employed the interaction model proposed by Milles and Huberman to analyze the data collection methods, which included direct interviews, direct observation, and documentation, with a sample of one teacher, three parents, and three students. The findings indicate that the effects of incorporating online science education were facilitated via WhatsApp Video Calls and assignments completed by students with parental involvement. Additionally, the study examined student reactions during learning activities and the outcomes of instructional methods that did not employ digital learning resources. Hence, the findings of this research offer valuable insights for educational institutions to enhance their online science education programs, thereby facilitating a smooth transition of children to formal schooling.
EFEKTIFITAS KOMUNIKASI PROYEK KONSTRUKSI SAAT PANDEMI DARI SUDUT PANDANG KONTRAKTOR
Authors: Prasetyo Ryan Faza , Darmawan Rama Adjie
Published: June 2023

Project communication management is an effort to ensure timeliness, collection and distribution of information according to the times. The level of success of a project has to do with Critical Success Factor (CSF) and one of them is communication. 2020 was a year that changed people's lives around the world because of the COVID-19 pandemic and had an impact on the construction sector in Indonesia. The PUPR Ministry issued Ministerial Instruction No. 02/IN/M/2020 regarding the mechanism for carrying out construction in preventing the spread of COVID-19 in both the government, regional government, BUMN, and private sectors during a pandemic (Construction Bulletin, 2020). In this case the implementation of Work Form Home (WFH) in contractor companies is one of the efforts to minimize the spread of the virus and continue to run the wheels of the economy (Prasetyo, 2022). This study aims to determine whether or not there is an influence on the effectiveness of the communication coordination relationship due to the COVID-19 pandemic in the construction process and to analyze whether or not there is a difference in the effectiveness of the communication coordination relationship before the pandemic and during the pandemic from the contractor's point of view. The research was conducted by distributing questionnaires to contractor stakeholders. Research data processing was carried out using excel and SPSS software. Data analysis was performed using descriptive statistics and comparative analysis.
ANALISIS ATP D WTP UNTUK PENENTUAN TARIF DI JALAN TOL BECAKAYU
Authors: Purboyo Wiryawan , Suryanto Doddy Ari , Ramdan Tatang , Tendy Johanes
Published: June 2023

The income from toll tariff is the main source of revenue to repayment of investment costs of toll road construction. The estimated value of toll tariffs can be usefull for regulators, investors and BUJT to consider decision KPBU, investment and company management. The aim of this study is to conduct a financial analysis of the toll rates for the Becakayu Toll Road. The research method used is the Quantitative Method, by calculating ATP, WTP, perceptions of applicable tariffs and analyzing the sensitivity of user movement to the toll road. The results of the analysis show that the ATP value is Rp 1,655.00 per km and the WTP value is Rp 1,515.00 per km. The results of the sensitivity analysis of price changes and their probability of moving to the toll road, for each increase in the toll fare (farthest distance) of Rp 3,000.00 has the potential to decrease 0.59% of toll road users. The perception of toll road users regarding the current toll tariff is Rp. 14,000.00 - for a distance of 8.4 km shows that: 51.33% of respondents consider it appropriate; 42.89% consider it expensive; 4.02% is very expensive; 1.61% consider it cheap; and 0.16% consider it very cheap
Plastic deformation of LiNi0.5Mn1.5O4 single crystals due to domain orientation dynamics
Authors: Vostrov Nikita , Martens Isaac , Colalongo Mattia , Zatterin Edoardo , Leake Steven , Zhu Xiaobo , Wang Lianzhou , Richard Marie-Ingrid , Schulli Tobias
Published: June 2023

The core principles and nanoscale mechanisms of ion deintercalation in battery cathode materials remain poorly understood, in particular, the relationship between crystallographic defects (dislocations, small angle grain boundaries, vacancies, etc.) and microscopic features of Li deintercalation. Here, we used operando scanning X-ray diffraction microscopy (SXDM) to investigate the local strain and lattice tilt inhomogeneities inside Li1−xMn1.5Ni0.5O4 cathode crystals (diameter from 1 to 2 µm) during electrochemical delithiation and lithiation. The technique has been combined to operando multi crystal X-ray diffraction (MCXD) to differentiate between inter- and intra-particle heterogeneity in the sample. Operando SXDM revealed three distinct domains within the crystal that displayed metastable angular rotations of the lattice during both of the phase transitions. These rotations, reaching up to 0.4°, likely arise due to a dynamic lattice mismatch between phases with different unit cell parameters coexisting within the particle. The persistent location of tilt boundaries implies the presence of inherent structural defects locally facilitating the defect formation. Residual misorientations were observed in the particle even after the full discharge suggesting an irreversible change of the lattice structure. Tilt boundaries, affecting ionic conductivity, may impede the rate capability and lead to localized strain, stress, and potential capacity fade due to cracking. However, the observed self-healing angular lattice reorganization could enable the coexistence of two phases in a single crystal. Understanding this phenomenon can optimize cathode material microstructure.
Aircraft overrun warning systems capabilities and disadvantages
Authors: Borodkin S. F. , Volynchuk A. I. , Kiselev M. A. , Petrov Yu. V.
Published: June 2023

Currently, attention of the aviation community and authorities is being increasingly focused on flight safety in the landing phase. It is accounted for the increased frequency of incidents in the final phase of flight and significant threats associated with the consequences of these events. The statistics of aviation accidents reveals that from 1959 to 2019, 55% of aircraft crashes in the world occurred in the phases of landing and takeoff. The given crashes resulted in 51% of all fatalities on board aircraft. In most cases, causes of these aviation accidents are involved with some kind of human error. Off-design conditions at an aerodrome also have a significant adverse effect on the aviation accident potential and severity. The increasing intensity of flights, airspace congestion, strict ATC-imposed restrictions, the necessity to perform a variety of procedures and general flight crew stress in conjunction with dynamically changing external conditions can disorient a flight crew and lead to a landing with a flight envelope overrange. The search for a solution in terms of preventing aircraft overruns is actively being conducted both by aviation authorities and aircraft manufacturers and operators. Within the framework of this review, the major external and operational factors, affecting the dynamics and the nature of the aircraft roll via the runway, are analyzed, including the context of several accidents that have occurred in recent years. In addition, the article emphasizes the methods to prevent and anticipate aircraft overruns based on the principles of active protection. In particular, the article examines the main operation aspects of onboard avionics systems installed on Boeing and Airbus aircraft and highlights the focus areas of their upgrading. Special attention is paid to the influence of the pilot and the possibility of taking his actions into account to predict an outcome of landing.
The application of methods for assessing the thermal oxidative jet fuel stability in civil aviation
Authors: Gryadunov K. I. , Brailko A. A. , Balyshin K. E. , Savushkin S. A. , Kharina V. K.
Published: June 2023

As a result of jet fuel oxidation, insoluble sediments, called resins or high-temperature deposits, are formed. They significantly reduce the chemmotological reliability of aircraft engine fuel system units, i.e., fuel metering equipment, fuel-oil coolers, fine fuel filters, etc. The main factors that intensify the jet fuel oxidation processes are fuel quality and meeting specifications as well as its temperature. In this regard, aviation fuel supply enterprises constantly monitor indicators of the thermal aviation fuel stability. The widely used domestic method for assessing the thermal oxidative aviation fuel stability is the technique under static conditions (Thermal Jet Fuel Stability – TJFS), the foreign one is the dynamic technique (Jet Fuel Thermal Oxidation Test – JFTOT). Opinions concerning the use of a particular method for an objective assessment of the thermal aviation fuel stability are divided. The article considers the main provisions with respect to the jet fuel stability, overviews the methods and indicators, characterizing the thermal oxidative aviation fuel stability, provides statistical data on the long-term use of the static (TJFS) and dynamic (JFTOT) methods for assessing the quality of domestic TS-1 and RT fuel grades for subsonic aircraft supplied to an airline. It is shown that the use of the dynamic method (JFTOT) with the current operation parameters is not relevant.
Analysis of the existing approaches to in-flight aircraft rerouting
Authors: Kiselev M. A. , Kalyuzhny Yu. S. , Karpov A. V. , Petrov Yu. V.
Published: June 2023

Currently, the large number of aircraft accidents is associated with the loss of control in flight and a controlled flight into terrain. It frequently occurs due to a change of flight conditions, relatively which a preparation for departure was carried out, and involves the necessity to reroute efficiently in the conditions of increased psychophysiological load and time constraint for decisionmaking. Generated thunderstorm cells on route, artificial or natural obstacles, not considered while planning a route, can result in amending a flight plan, which was earlier accepted and implemented in the automatic, flight director or manual modes of control. The lack of comprehensive situational awareness is fairly a frequent cause of aviation accidents for general aviation aircraft. Aviation accidents of transport category aircraft are typically associated with incorrect crew actions when dangerous flight zones are detected along the route. The article represents an overview and analyzes modern onboard facilities to detect obstacles, as well as required pilot actions to reroute a flight for in-flight detected obstacle avoidance. The current level of avionics development provides situational awareness necessary for obstacles avoidance but requires timely, correct and sometimes non-obvious flight crew rerouting decisions. The algorithms used with robotic packages of various applications in related fields ensure the automatic rerouting for obstacle avoidance. They cannot be directly used or adapted for the implementation on board an aircraft due to the lack of consideration for aircraft specific features when obstacle avoidance routing, i.e., restrictions of control parameters (an angle of attack, overload, roll angle), capabilities of a control system (available rate of overload, available and maximally allowable angular rolling velocity, etc.). Therefore, the issue to develop a system to support pilot decisions for obstacle avoidance is relevant. It encompasses the synthesis of safe alternatives for obstacle avoidance which are optimal by a pilot-assigned criterion (minimum loss of time, minimum additional fuel consumption, etc.).
The features of organizing tourist routes as one of the methods to increase the efficiency of rolling stock usage
Authors: Kovalenko N. A. , Shorokhova L. S.
Published: June 2023

The article deals with the main advantages of railway transport in the field of tourist transportation and the capabilities of effective rolling stock use for organizing high-quality transport service and attracting new customers. Currently, the attention of a great number of transport industry scientists is focused on passenger transportation. The foundations of interaction between railway transport and the tourism industry are being formed. The importance of the railway tourism sector cannot be underestimated in terms of economic, social and environmental aspects of the society. There are advantages of railway transport compared with other modes of transport: the longest railway network in Europe, ability to transport a large number of passengers, use of railway cars as a hotel on wheels, high degree of reliability and safety, lack of dependence on weather conditions, high level of comfort and amenities on board, providing a choice of travel conditions depending on the carriage types and train categories, regularity. The development of the route network contributes to the increase in the competitive abilities of regional tourist destinations. At the same time, the key factors in choosing the method of organizing a tourist route are as follows: the volume of passenger demand for an assigned route, size of expenses, tour duration, etc. The field of tourist transportation is not limited to the use of rail transport only. Its collaboration with other types of transportation allows for maximum effect from tourist service while maintaining a high level of service. This interaction is one of the components of the tourism product aimed at addressing all the key aspects and stages of tour organization.
Methodology for determining the reactive parameters of aviation electrical energy consumers based on voltage and current data in transients
Authors: Pavlova V. I. , Starostin I. E.
Published: June 2023

Modern trends in the aircraft development are associated with a significant increase in the level of its electrification. The emergence of new types of electricity consumers entails an increase in the power and number of consumers in the aircraft power supply system. At this stage of operation, direct control of the internal parameters (in particular, the parameters of reactive elements) of electricity consumers in the aircraft power supply system is not carried out. The aviation equipment control system is built taking into account the built-in system for monitoring the technical condition of the object. However, for greater efficiency, the built-in control can be supplemented with control capabilities through digital intelligent power distribution systems (local load control center). During the operation of aviation electrical equipment, the values of its parameters change relative to the nominal values. Deviations of equipment parameters from the nominal values should not exceed the specified values, which are determined by the operational technical documentation. Input impedances of secondary power supply sources can be investigated in a mode characterized by transient processes in the investigated component of aircraft equipment. Based on the experimental data of voltage and input current at the stage of transients in equivalent circuits of secondary power supplies, it is proposed to determine the values of the parameters of reactive elements. Changing the values of reactive elements gives information about the technical condition of the input stages of electrical energy receivers. This makes it possible to monitor the process of degradation of their properties or to diagnose a failure in the event of an abrupt change in reactive parameters. This method is proposed to be used for diagnosing electrical equipment during its operation on board the aircraft. This work is devoted to the development of methods for determining the parameters of secondary power sources of aircraft electrical equipment, characterizing its reactive properties.
Sources of Nutrition Information Used by Tennis Trainee Athletes at the University of Limpopo in Limpopo Province, South Africa: A Descriptive Study
Authors: Sekgobela Tumelo Tshabaku , Sepodumo Thabiso , Mamaila Johanita , Ramokolo Khutso Matlaila , Masoga Sylven
Published: June 2023

BackgroundThe dietary intake of tennis athletes training at the University of Limpopo (UL) were reported to be suboptimal. However, the nutrition information sources guiding these athletes remain unknown.MethodsA descriptive cross-sectional study was carried out to purposively obtain 30 registered UL-affiliated tennis team athletes. Data were collected at the UL tennis courts. Demographic data and information sources used for sport nutrition were collected using self-designed questionnaires in English.ResultsThe mean age of the athletes was 20.3±1.1 years. All were registered students at UL. All male athletes (100%) and 92.2% of females were single. More than half of the males (n=9; 56.2%) and many females (n=5; 35.7%) had participated in tennis for 1 – 2 years at UL. Most participated in tennis 3 – 6 times a week, for 1 – 2 hours per day. Most males (n=8; 50%) and females (n=7; 50%) obtained nutrition information from social media followed in both cases by a coach (43%). Of those who used social media, most males (n=3; 37%) and females (n=7; 43%) used Instagram, followed by Facebook (males, n=3; 37% versus females, n=2; 28%). Tik-Tok and YouTube were hardly ever used. However, none of the athletes had ever consulted a nutrition professional such as a dietitian for nutrition information.ConclusionSocial media, particularly Instagram, was the most used source of information by our sample of tennis athletes at the University of Limpopo.
Response to Dewey et al.’s Letter
Authors: Gupta Arun Kumar , Rundall Patti , Ntombela Nomajoni , Sachdev Harshpal Singh
Published: June 2023

None
The Impact of Applying Re-Engineering Application Process on Critical Performance Criteria in Jordanian Islamic Banks
Authors: Maharmah Mashhour Hathloul , Al-Jbour Fadi Khalil
Published: June 2023

Purpose: The importance of the study is that it provides an understanding of the management approach to re-engineering the application process in the banking industry to deal with significant and quick changes in the environment by implementing superior and radical changes that aid it in increasing its efficiency and lowering costs as well as in shifting the focus of employees to meet the needs and desires of customers by redesigning banking processes based on customer perceptions and needs, during the period 2019.
 
Theoretical Framework: The Study of the management method in re-engineering the application process in the banking sector to face the large and rapid changes in the environment is critical, as is shifting the focus of employees to meet the needs and desires of customers by redesigning the banking process based on customer perceptions and needs.
 
Design/methodology/approach: All three Jordanian Islamic banks comprise the study's study community, and the study's sample includes sixty-three (63) members of these banks' managerial ranks. The study used a questionnaire to gather data and analytical methodology, which helped explain the study problem.
 
Findings: After conducting the analysis process of the study data and hypotheses, Findings show There is a statistically significant influence of the application of the re-engineering process (redesigning jobs, redesigning process, reducing control levels, using new technology, empowering employees) on performance criteria  (costs, quality, speed ) in Jordanian Islamic banks. 
Research, Practical & Social implications: To identify and analyze the re-engineering application process in Jordanian Islamic banks. The following elements are part of the study methodology: Cost, Quality, and Speed are the dependent variables in the crucial performance criteria; the study relied on choosing the dependent variables according to the objectives that re-engineering the application process can accomplish. Application re-engineering process dimensions, such as redesigning jobs and processes redesign, reducing control levels, using new technology, and empowering employees act as independent variables.
 
Originality/value: The Study recommends additional future research that could involve all levels of bank management in the re-engineering process and create an effective technology infrastructure and communication system that effectively contributes to the success of the re-engineering process.
Research Progress of Epoxy Asphalt Material for Roads
Authors: Liu Yang , Wang Shuguo
Published: June 2023

Asphalt is a semi-solid or solid mixture formed by hydrocarbons and non-metallic elements. It is widely applied in the fields of building waterproofing and road paving. Asphalt is a low noise, durable, and renewable pavement material. However, asphalt materials have some shortcomings such as liquefying at high temperatures and brittleness at low temperatures, which are less adaptable to different environments. Therefore, people have gradually shifted their focus to asphalt modification. This paper presents an in-depth analysis and research on the composition, structure, and performance of epoxy asphalt materials for roads, so that this material can be widely used.