bluuebunny/crossref_metadata_2025 huggingface dataset:
The Development of Bacteriophage Resistance in Vibrio alginolyticus Depends on a Complex Metabolic Adaptation Strategy
Authors: Skliros Dimitrios , Kalatzis Panos G. , Kalloniati Chrysanthi , Komaitis Fotios , Papathanasiou Sokratis , Kouri Evangelia D. , Udvardi Michael K. , Kokkari Constantina , Katharios Pantelis , Flemetakis Emmanouil
Published: April 2021

Lytic bacteriophages have been well documented to play a pivotal role in microbial ecology due to their complex interactions with bacterial species, especially in aquatic habitats. Although the use of phages as antimicrobial agents, known as phage therapy, in the aquatic environment has been increasing, recent research has revealed drawbacks due to the development of phage-resistant strains among Gram-negative species. Acquired phage resistance in marine Vibrios has been proven to be a very complicated process utilizing biochemical, metabolic, and molecular adaptation strategies. The results of our multi-omics approach, incorporating transcriptome and metabolome analyses of Vibrio alginolyticus phage-resistant strains, corroborate this prospect. Our results provide insights into phage-tolerant strains diminishing the expression of phage receptors ompF, lamB, and btuB. The same pattern was observed for genes encoding natural nutrient channels, such as rbsA, ptsG, tryP, livH, lysE, and hisp, meaning that the cell needs to readjust its biochemistry to achieve phage resistance. The results showed reprogramming of bacterial metabolism by transcript regulations in key-metabolic pathways, such as the tricarboxylic acid cycle (TCA) and lysine biosynthesis, as well as the content of intracellular metabolites belonging to processes that could also significantly affect the cell physiology. Finally, SNP analysis in resistant strains revealed no evidence of amino acid alterations in the studied putative bacterial phage receptors, but several SNPs were detected in genes involved in transcriptional regulation. This phenomenon appears to be a phage-specific, fine-tuned metabolic engineering, imposed by the different phage genera the bacteria have interacted with, updating the role of lytic phages in microbial marine ecology.
Immunological Responses to Seoul Orthohantavirus in Experimentally and Naturally Infected Brown Rats (Rattus norvegicus)
Authors: Yasuda Shumpei P. , Shimizu Kenta , Koma Takaaki , Hoa Nguyen Thuy , Le Mai Quynh , Wei Zhuoxing , Muthusinghe Devinda S. , Lokupathirage Sithumini M. W. , Hasebe Futoshi , Yamashiro Tetsu , Arikawa Jiro , Yoshimatsu Kumiko
Published: April 2021

To clarify the mechanism of Seoul orthohantavirus (SEOV) persistence, we compared the humoral and cell-mediated immune responses to SEOV in experimentally and naturally infected brown rats. Rats that were experimentally infected by the intraperitoneal route showed transient immunoglobulin M (IgM) production, followed by an increased anti-SEOV immunoglobulin G (IgG) antibody response and maturation of IgG avidity. The level of SEOV-specific cytotoxic T lymphocytes (CTLs) peaked at 6 days after inoculation and the viral genome disappeared from serum. In contrast, naturally infected brown rats simultaneously had a high rate of SEOV-specific IgM and IgG antibodies (28/43). Most of the IgM-positive rats (24/27) had the SEOV genome in their lungs, suggesting that chronic SEOV infection was established in those rats. In female rats with IgG avidity maturation, the viral load in the lungs was decreased. On the other hand, there was no relationship between IgG avidity and viral load in the lungs in male rats. A CTL response was not detected in naturally infected rats. The difference between immune responses in the experimentally and naturally infected rats is associated with the establishment of chronic infection in natural hosts.
Thermal Desalination of Produced Water—An Analysis of the Partitioning of Constituents into Product Streams and Its Implications for Beneficial Use Outside the O&G Industry
Authors: Ghurye Ganesh L. , Mishra Dhananjay , Lucas Luke
Published: April 2021

To understand partitioning of produced water (PW) constituents using thermal desalination, PW from the Delaware Basin was desalinated using a crystallization process and modeled using OLI Systems, Inc. (OLI, Parsippany, NJ, USA) chemistry software. The incorporation of a pretreatment step, steam stripping, prior to desalination was predicted to be effective at removing hydrocarbons (across a range of volatilities). As expected, inorganics were almost completely retained in the residual brine which was confirmed by OLI. As evaporation progressed, sparingly soluble compounds such as gypsum and celestite precipitated first and overall solids production at this stage was low (<1% of total solids). Further evaporation resulted in saturation of the residual brine with respect to NaCl, which started to precipitate in bulk up to a practical desalination limit of approximately 68% by mass (approximately 80% by volume). Beyond this point, the residual brine and solids mixture became too viscous to be pumped. Gravimetrically determined total dissolved solids (TDS) for PW, distillate and residual brine was found to be much higher than prediction, potentially due to the presence of neutral species, unstripped gases and organic (likely hydrophilic) constituents. Although the distillate had low TDS, the presence of unknown constituents including organic compounds in the distillate will likely require polishing treatment to mitigate potential toxicity associated with such compounds or transformation products post-release if discharged to the environment. OLI predicted near-complete retention of acetate in the residual brine. In contrast, laboratory tests showed nearly 50% partitioning of acetate into the distillate. Although not modeled, propionate partitioning was even higher at 94%. The inclusion of ammonia as an input species in OLI greatly improved the match between test data and model prediction. Additionally, it was hypothesized that acetic acid/acetate could have formed a volatile adduct with ammonia that increased its volatility and partitioning into the distillate. The findings of this study inform beneficial use by describing the chemical composition of desalination-derived distillate, brine and salt products. This study also identified alternative approaches, both treatment and non-treatment, for managing PW from unconventional operations.
Global Future: Low-Carbon Economy or High-Carbon Economy?
Authors: Lugo-Morin Diosey Ramon
Published: April 2021

This study critically examines the decarbonization of development in the context of the Anthropocene at the global level. A literature review is conducted that emphasizes the rationality of human beings to harmonize with the planet due to the low capacity of their human agency in the framework of the Anthropocene. The analysis recognizes that the possibility of transitioning to a decarbonized global economy or zero carbon emissions is not encouraging. Global energy production and CO2 emissions are concentrated in a dozen countries: China, United States, Russia, Saudi Arabia, Canada, Iran, India, Australia, Indonesia, and Brazil. These countries are part of societies with an advanced social metabolism that negatively impacts the production of CO2. In context, the COVID-19 pandemic has provided some level of environmental health for the planet, but the CO2 reduction levels are still insufficient to consider a positive impact towards 2030.
Asymmetric Supercapacitors Based on Co3O4@MnO2@PPy Porous Pattern Core-Shell Structure Cathode Materials
Authors: Wang Zihan , Pan Shuang , Wang Bing , Qi Jingang , Tang Lidan , Liu Liang
Published: April 2021

In recent years, supercapacitors have been developed rapidly as a rechargeable energy storage device. And the performance of supercapacitors is depending on electrode materials, the preparation method and performance of electrode materials have become the primary goal of scientific development. This study synthesizes Co3O4@MnO2@PPy cathode material with porous pattern core-shell structure by hydrothermal method and electrodeposition. The result samples are characterized by X-ray diffraction transmission/scanning electron microscope, and X-ray photoelectron spectroscopy. Electrochemical evaluation reveals that electrochemical performance is significantly enhanced by PPy depositing. The specific capacitance of Co3O4@MnO2@PPy is 977 F g−1 at 1 A g−1, the capacitance retention rate of 105%. Furthermore, the electrochemical performance of Co3O4@MnO2@PPy//AC asymmetric supercapacitor assembles with AC as the negative electrode material is significantly better than that of MnO2//AC and Co3O4@MnO2//AC. The capacity of Co3O4@MnO2@PPy//AC is 102.78 F g−1. The capacity retention rate is still 120% for 5000 charge-discharge cycles.
Modern management theory — a paradoxical symbiosis of psychology, sociology and rhetoric
Authors: Barkov S.A. , Zemlyakov D.N.
Published: April 2021

The article deals with the current trends and trends in the development of the general theory of management. The thesis about the systemic influence of related sciences — psychology, sociology, rhetoric-on the theory of management is substantiated. The author identifies the cognitive and institutional reasons for this influence and provides a sociological assessment of the symbiosis of these scientific disciplines within the postindustrial management paradigm.
THE ROLE OF INTERCULTURAL COMMUNICATION AT THE STAGE OF PRE-UNIVERSITY TRAINING OF FOREIGN CITIZENS
Authors: VECHEROK O. , SKALSKA S. , TRUSOVA L.
Published: April 2021

The paper studies the problem of interaction of people from various countries and cultures in the conditions of cultural globalization, which creates new problems of cultural adaptation.

The paper explores the concepts of «communication», «intercultural communication». The problem of forming the ability of the individual to effective intercultural communication as a means of understanding the mental characteristics of different cultures, which is a guarantor of effective dialogue of cultures in the modern world. The characteristics of intercultural misunderstandings in the process of communication was submitted. Communication as a reflection of the intercultural ties of specific groups of people in a particular period of historical development of society is studied.

Intercultural communication in the pedagogical process is also considered as a method of socio-cultural adaptation, due to the interaction of different cultures and the mental characteristics of their carriers.

The teacher of Ukrainian (Russian) as a foreign language must be understood that foreign students have already formed ideas about their nation. Therefore, it is important to teach them the differences between cultures, to respect the cultural sensitivities, to overcome stereotypes. Foreign students should learn to understand why people of other cultures must behave in particular way. In the conditions of modern education, when people from various countries with specific features of national character and thinking study in one group, the question of intercultural communication acquires special significance. Cultural diversity implies intercultural enrichment. Shortening of intercultural distance, willingness to adapt to existing realities will provide an opportunity to develop an optimal strategy for collaboration in the group.

A dialogue of cultures has contributed progress in universal culture. During the dialogue of culture, there is an acquaintance with another culture and constant development through the mutual enrichment of different cultures.
PROFESSION COMPETENCE YAK FACTOR FORMING COMPETITIVENESS BACHELOR HOTEL-RESTAURANT RIGHT
Authors: KAROLOP O.
Published: April 2021

The statistics have food, tied to the form of professional competence, which will ensure the effectiveness of training and the competitiveness of bachelors in the hotel and restaurant service. Rozkrito zmist understanding "professional competence of bachelors in hotel and restaurant law" The process of forming the professional competence of bachelors in the hotel and restaurant law has been analyzed, and the process of becoming special in the social and professional community has been analyzed.

The categories of competence-based approach are substantiated: "professional competence", "key competencies", "entrepreneurial competence" etc. The content of the concept "professional competence of future specialists of restaurant services" is grounded, which is based on the specification of the knowledge, skills, professionally important qualities, which are necessary for professional activity in the restaurant industry. The process of formation of professional competence of future specialists of restaurant service, which is characterized by the formation of the personality in social and professional environments, is analyzed. In order to achieve positive dynamics in the levels of the formation of professional competence of future specialists of restaurant services, the components of the investigated phenomenon are identified, which are: value-motivational, cognitive, personal-professional and activity-reflexive. The purposeful development of these components in the educational process will provide skilled workers with the successful socialization and effective performance of their professional functions in the restaurant industry.
Cluster development of Azerbaijani territories liberated from the Armenian occupation: choice of model.
Authors:   Institute of Control Systems of Azerbaijan National Academy of Science, Aliyev E.R.
Published: April 2021

The regeneration of the territory of Karabakh is the primary task on the way to further strengthening the political and economic sovereignty of the Republic of Azerbaijan. In the territories liberated from the Armenian occupation, it is planned to provide a safe and dignified life for internally displaced per-sons in the shortest possible time, to carry out creative and restoration work in all areas, as well as to run effective activities for setting an impulse for a sustainable growth in the well-being of the returned native population. The modern practice of clustering the territories of advanced development, carried out in different countries, is characterized by a synergistic effect from the maximum use of regional re-sources, which makes it possible to achieve significant economic benefits within a minimum period. Within the framework of the cluster approach, the project is «placed» in a specific sector of the cluster and is implemented on the basis of a worked-out mechanism, taking into account socio-economic, polit-ical and legal aspects. It is within this sector that favorable conditions are created for the implementa-tion of the project, due to which, in fact, a synergistic effect is achieved and the desired output is pro-vided. Cluster development of the territories liberated from the Armenian occupation provides for state participation, including at the levels of sectoral executive authorities, regional government and local authorities, as well as in the person of state development institutions and institutional investors in inte-grated development projects – direct investment funds and leading systemically important banks. The residents of innovation clusters and technology parks, leading Azerbaijani developers, representatives of business structures, as well as private investors interested in portfolio investments can and should be-come other important actors in this process. Within this approach, a model of an economic cluster is proposed for the accelerated development of the territories of Azerbaijan liberated from the Armenian occupation.
Development and scenario experiments with the new model of rapid bioresources crisis under expert control
Authors:   St. Petersburg Federal Research Center of the Russian Academy of Sciences, St. Petersburg, Perevaryukha A.Yu.
Published: April 2021

This paper continues a series of studies dedicated to the analysis of the nonlinear dynamics of complex environmental processes through the use of computational methods. The construction of a computational structure that uses the forms of the hybrid time and the logic of redefined behavior of solutions of the special system of equations to describe important nonlinear phenomena in the man-agement of unstable biosystems is considered in the article. The difference between the described ap-proaches to building a model is that computational experiments based on differential equations and re-defined according to the rules simulate scenarios in the dynamics of controlled biological resources of different types. The form of time allows to operate on a discrete component of the trajectory to describe changes that are visible to experts from the monitoring statistics or from reports from the fishery. The computational structure logically corresponds to the life cycle of large marine fish. Continuous characteristics are used to manage changes in the life cycle model. The new models are intended to de-scribe in scenarios the phenomena of rapid degradation of valuable biological resources with a very small error in the regulation of the rate of removal from the stock. These models have shown that the tradi-tional methods of bioresources management by experts have fundamental shortcomings and problems. Experts overestimate the amount of stocks for commercial removal from the population. Regulation by setting quotas on fish catch does not prevent the fishery from collapsing. The approach is applicable for mathematical predicting of the rapidly inflowing phases of an ecological invasion in aquatic systems.
Radio and microprocessor technology for ensuring railway transport safety.
Authors:   Institute of Mathematical Machines and Systems Problems, Mukha Ar.A. , Fedukhin O.V. ,   Institute of Mathematical Machines and Systems Problems of the Ukraine National Academy of Science
Published: April 2021

The need to minimize losses and accidents is an important factor in sustainable technical development. One of the industries characterized by a high level of danger is rail transport. This problem changes its scale with the increase in the number of vehicles, its traffic intensity and speed. Another special diffi-culty is that significant infrastructural development, which involves the construction of a large number of complex and expensive facilities such as interchanges, overpasses and underpasses, is impossible in today's economic environment. Therefore, there are some promising solutions aimed at developing and implementing a new class of systems that provide a high level of safety and are able to correct negative accident statistics and solve the problem of not harming people's lives on rail transport. The article is devoted to the problem of traffic safety at railway crossings, railway crosswalks and in the work areas of service personnel. An information approach aimed at improving traffic safety and timely informing road users about emergencies and dangerous situations in their area approach is developed in the work. It is offered to solve the mentioned above tasks at the expense of the creation of digital information systems of a new class. The main differences between the created systems are the use of microprocessor systems, wireless communications and energy-saving technologies. The systems themselves must meet modern requirements for reliability, fault tolerance, and dependability. The article describes some basic options for the implementation of control and information systems for railway crossings «Blagovist», railway crosswalks «Blagovist-Р» and for a mobile system for service personnel working on the tracks «Blago-vist-SP». The systems have technologies for autonomous operation and wireless transmission of infor-mation.
Software and hardware infrastructure of a terrestrial autonomous platform with the elements of artificial intelligence.
Authors:   Scientific Center for Aerospace Research of the Earth of the Institute of Geological Sciences of the National Academy of Sciences of Ukraine, Alpert S.I. , Alpert M.I. ,   National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Katin P.Yu. ,   National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Litvinova N.O. ,   National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
Published: April 2021

Due to modern microcomputers and platforms based on microprocessors such as, for example, Raspberry Pi, Orange Pi, Nano Pi, Rock Pi, Banana Pi, Asus Tinker Board – the development of prototypes of em-bedded systems is possible in a «design» mode. The software part is implemented on the basis of operat-ing systems and standard technologies based on well-known programming languages such as C / C++, Python, C#, Java, etc. In such case the control channel for the embedded system can be either imple-mented via a web service separated by a communication channel or controlled independently. It is im-portant to understand that creating an embedded system on a standard platform is much more expensive than buying a ready-made mass-produced device with the same functionality. Therefore, it makes sense to use platforms like the Raspberry Pi mainly for individual artificial devices. If it is necessary to build a project of embedded systems and there is a problem with choosing a hardware platform for the client side, then currently there is a wide range of boards and solutions for building an efficient and inexpen-sive system using ready-made modules. The number of expansion cards and various sensors, video cam-eras, internet connection via Ethernet, Wi-Fi and Bluetooth provides a wide range of opportunities for building almost any solution based on this component base. The foundation can be made within a small budget, with minimal time spent, using large blocks and ready-made libraries for programming embed-ded systems. This article presents the results of research and development work on the creation of a software and hardware infrastructure of a terrestrial platform with the elements of artificial intelligence. Based on the actual results of the research, a deployment diagram and a component diagram of such an infrastructure have been constructed.
Managing multiple satellite architectures by spatial grasp technology
Authors:   Institute of Mathematical Machines and Systems Problems National Academy of Sciences of Ukraine, Sapaty P.S.
Published: April 2021

The paper reviews some advanced space projects oriented on many satellites moving around the globe in low Earth orbits, and investigates how to organize their collective operation for solving important world problems, especially those related to global security and defense. It analyzes the application of the developed Spatial Grasp model and Technology (SGT), successfully tested on numerous applications, for simulation and management of multiple satellite architectures. Of particular interest is the latest Space Development Agency Next-Generation Space Architecture that uses a great number of cooperating satellites organized on different layers, which appears to be much more advanced than the known Strategic Defense Initiative project of the eighties. SGT is based on mobile recursive scenarios in a special high-level Spatial Grasp Language (SGL) which can self-navigate and self-match distributed environments while leaving throughout them powerful spatial infrastructures capable of solving any distributed problems. Providing basics of the latest SGT version, the paper describes examples of solutions in it of such problems as distributed tracing and elimination of complexly moving cruise missiles and hypersonic gliders, organization of effective custody layer which will be able to observe not only localized dangerous objects on the Earth but also any distributed terrestrial infrastructures as a whole. It also shows how to introduce a higher virtual layer for satellite constellation which may simplify formulation and solution of many problems in both terrestrial and celestial environments, including advanced command and control of complex national and international operations and campaigns from space.
A search system for media content in telegram messenger
Authors:   Chernihiv Polytechnic National University, Nikitenko Ye.V. , Ometsynska N.V. ,   Tavrida National V.I. Vernadsky University
Published: April 2021

An autonomous Telegram bot aimed at searching for media content (movies, cartoons and TV series) displaying video titles, categories, main tags, description, cast, ratings, links to third-party resources and a list of similar content is developed. This Telegram-bot has a special interface for the administrator with usage statistics and the ability to send messages. It was decided to use the WebStorm development environment to implement the chatbot. The TypeScript language on the NodeJS platform was chosen as the programming language, because it is compatible with JavaScript and is compiled in it. After the compilation, the program on TypeScript can be run in any modern browser or used in conjunction with the server platform. TypeScript differs from the JavaScript language by its ability to explicitly statically define types, support the use of full-fledged classes and support the connection of modules, which is designed to increase the speed of development, facilitate readability, refactoring and reuse of the code, help to debug at the development and compilation stage, and possibly speed up program execution. The Telegram bot was created and configured to implement the client part. This feature is implemented inside the messenger itself. To speed up the development and simplify the interaction with Telegram, a modern framework for NodeJS – Telegraph – was used. Cloud Firestore was used as a database. It is a flexible, scalable cloud-based NoSQL database from Firebase and Google CloudPlatform for the Internet, mobile platforms and server applications. Cloud Firestore database supports flexible, hierarchical data structures, stores data in documents which, in their turn, are stored in collections. Documents can have attachments, objects and subcollections.
Determining the relevance of information obtained from some search and reference services located on the web platform.
Authors:   Volodymyr Dahl East Ukrainian National University, Kryazhych О.О.
Published: April 2021

The article analyzes some possibilities of a quick determination of the relevance of information obtained from some search and reference services located on various web platforms. An important feature to ensure the survivability of the information on the Internet for reference and search services has been identified. This feature consists in providing services to an array of sample data to verify information obtained from primary sources or through the mechanism of following links, which confirm the information or provide an answer to the request in case of failure. It is proposed to consider a search service or some reference platforms using the production rules of if-THEN structures, depending on the available facts. An indicator of the effectiveness of the formalized information is derived through a determinant of the level of the information error when processing it under the conditions of uncertainty, providing that the determinant highlights the data that is not enough to describe the object of the re-quest, and that there may be a solution to system problems among the data. Its representation through some estimated values is given. When developing a search or reference service on a web platform using the proposed approach, such services will hold not just arrays of information structured by topic, but formed arrays of information based on symbolic transformations using both general and separate schemes for displaying information on the request, as well as with the ability to reformulate tasks and queries with the aim of getting the most complete and different information on the request. A mecha-nism for detecting truth and falsity when receiving responses to the request from a service according to the rules of fuzzy logic, when understanding the set can be replaced by understanding the characteristic function, is proposed. An example of an algorithmic implementation is provided as well. All stated above can be used to optimize reference and search services on web platforms, improve the work of search engines and various distributed information processing services.
The use of meeting protocols at the stages of its life cycle
Authors:   Institute of Mathematical Machines and Systems Problems, Vlasova T.M. , Kosolapov V.L. ,   Institute of Mathematical Machines and Systems Problems of the Ukraine National Academy of Science, Rusanova H.A. ,   SimCorp Ukraine Company
Published: April 2021

The article is devoted to the issues of automation of servicing the meetings activities which include its preparation, holding and real-time recording. The article proposes a method for conducting and record-ing meetings, regardless of the meeting topic, its language and area of use. The formation and applica-tion of the meeting protocols in the proposed method differs from previous solutions. The meeting pro-tocol is formed from the initial protocol and is displayed in a compact and convenient form on the ad-ministrator's control panel as a meeting plan that can be adjusted and supplemented under the adminis-trator’s control. During the meeting the administrator can change the agenda presented in the meeting plan. In the course of the meeting, its plan and a corresponding text document known as «a protocol» are synchronously supplemented by the objects of discussion that are flexibly constructed during the discussions and were described in previous works. The text document – «protocol» – is formed both at the beginning and during the meeting, and can be used on any PC in the local network regardless of the time and the day when the meeting is to be held. The proposed approach can be used to conduct unreg-ulated ad hoc meetings in SM systems. Owing to the capabilities of the proposed software shell, a «cur-rent» application for the meeting servicing is created from the text documents prepared for the current meeting. The proposed method can be applied in various fields: education, medicine (including tracking of epidemics), military, etc. Moreover, each unique application without the participation of a program-mer will be created from the texts prepared by an appropriate specialist, and the applied method will en-sure the synchronization of the protocols of various processes. In terms of its capabilities, the proposed method for the meeting servicing is comparable to a popular system Meeting King, but this method, in its turn, allows people to conduct and record meetings in any language, and use it to support and log other processes as well.
Simulation of secondary radioactive air pollution in Ukraine due to the wind lift of radionuclides.
Authors:   Institute of Mathematical Machines and Systems Problems of the Ukraine National Academy of Science, Kovalets I.V. , Khalchenkov O.V. ,   Institute of Mathematical Machines and Systems Problems of the Ukraine National Academy of Science, Maystrenko S.Ya. ,   Institute of Mathematical Machines and Systems Problems of the Ukraine National Academy of Science, Dontsov-Zahreba T.O. ,   Institute of Mathematical Machines and Systems Problems of the Ukraine National Academy of Science, Khurtsylava K.V. ,   Institute of Mathematical Machines and Systems Problems of the Ukraine National Academy of Science, Synkevych R.O. ,   Institute of Mathematical Machines and Systems Problems of the Ukraine National Academy of Science, Udovenko O.I. ,   Institute of Mathematical Machines and Systems Problems of the Ukraine National Academy of Science
Published: April 2021

The paper presents the results of the simulation of secondary air pollution scenario in Ukraine due to the wind lift of anthropogenic radionuclides during a dust storm in April 2020. A variant of the Bagnold formula was used to parameterize the intensity of radionuclide resuspension. To set the initial pollution of the territory of Ukraine, the reconstruction of meteorological conditions and fallout of Cs-137 after the disaster at the Chernobyl nuclear power plant was carried out through the use of the RODOS nuclear emergency response system and the WRF meteorological model. For the normalized root-mean-square error of the calculated total fallout in the 50-km zone around the Chernobyl NPP the value NMSE=4,5 was obtained. A decrease in the levels of pollution of the Earth's surface during the time after the accident due to radioactive decay and other environmental processes was estimated. The distribution of contamination of the Earth's surface obtained in this way was used to assess the intensity of wind rise and atmospheric transport of radionuclides during a dust storm on April 16–18, 2020. The calculations were carried out using the CALPUFF model. The input meteorological data were the results of the WRF-Ukraine weather forecasting system. In the calculation of secondary contamination, the effect of fires in the Chernobyl Exclusion Zone (ChEZ) was not taken into account. The calculated average daily concentrations of Cs-137 in the air were maximum for the first day of the dust storm (April 16), when the wind speed was maximum (13 m/s with gusts up to 19 m/s). Average daily concentrations on April 16 ranged from the background values (5,8·10-6 Bq/m3 in Kyiv) to 2,2·10-3 Bq/m3 (ChNPP). The obtained estimates are much less than the permissible concentrations (0.8 Bq/m3). At the same time consideravle exceedance of background values were predicted in a large part of Ukraine – from Rivne NPP (2,2·10-5 Bq/m3) to Kharkiv (1,3·10-5 Bq / m3). In the vicinity of the ChEZ in the cities of Chernihiv and Slavutich, the obtained estimates of daily average concentration were 1,6·10-4 Bq/m3 and 3,2·10-4 Bq/m3 respectively.
THE EFFECT OF PRODUCT DIVERSIFICATION STRATEGY, FINANCIAL LEVERAGE, FIRM SIZE,AND CAPITAL STRUCTURE ON PROFITABILITY
Authors: Sofiatin Destya Aida , Putri Trisandi Eka , Mulyati Sri
Published: April 2021

This study aims to determine the effect of product diversification strategies, financial leverage, company size, and capital structure on profitability (Case Study of Consumer Goods Industry Sector Companies listed on the Indonesia Stock Exchange for the 2014-2018 period).

In this study, using purposive sampling method, and samples that fit the criteria were 32 companies, so that 160 data were obtained on consumer goods industrial companies for the period 2014-2018. And the data were analyzed using Eviews 9 program. The method of analysis used in this research is descriptive statistical analysis, panel regression analysis and classical assumption test.

The results showed the coefficient of determination R2 was 14% and the remaining 86% was explained by other variables. Partial results (t test), product diversification strategy variables and financial leverage have a positive and significant effect on profitability, firm size has a negative and significant effect on profitability. Meanwhile, capital structure has no significant effect on profitability. The simultaneous test results (F test) show that the product diversification strategy, financial leverage, company size and capital structure simultaneously affect profitability.
Pandemi Sonrası Oluşan VUCA Ortamının Çalışan İnsan Kaynakları Kaygı Düzeyi ve Verimliliği Üzerine Etkisi
Authors: İNAL İbrahim Haşim , AKDEMİR Ali , CİHAN Sezer
Published: April 2021

Günümüz dünyası, Covid-19 ile birlikte değişimin hızının ve kapsamının belirlenemediği, planlama ve öngöürü yapmanın zorlaştığı tam anlamıyla bir VUCA ortamı yaşamaktadır. VUCA, ilk olarak 1987'de kullanılan ve Warren Bennis ve Burt Nanus'un liderlik teorilerine dayanan bir kısaltma olup, değişkenlik, belirsizlik, karmaşıklık ve muğlaklık anlamına gelmektedir. Araştırmanın amacı, VUCA ortamının, insan kaynakları verimliliği üzerine etkisinde kaygı düzeyinin aracı rolünü incelemektir. Araştırmaya ait veriler, yapılandırılmış anket tekniği kullanılarak aktif olarak bir işletmede çalışmakta olan ve rassal olarak seçilen 627 çalışandan elde edilmiştir. Araştırma sonucunda VUCA ile kaygı düzeyi arasında pozitif yönlü, kaygı düzeyi ve verimlilik arasında negatif yönlü ve yine VUCA ile verimlilik arasında da negatif yönlü anlamlı bir ilişki bulunmuştur. Yapılan hiyerarşik regresyon analizi sonucunda ise kaygı düzeyinin VUCA ile verimlilk ilişkisinde tam aracılık etkisi bulunduğu gözlemlenmiştir. Bu sonuca göre VUCA’nın verimlilik üzerindeki negatif etkisinin nedeninin kişilerin kaygı düzeyinin artması olduğu söylenebilir.
Savunma Harcamalarının Ekonomik Büyümeye Etkisi: NATO Ülkeleri Üzerinde Panel Veri Analizi
Authors: TORUN Mustafa , EROĞLU Ercan , BAYRAK Rıza
Published: April 2021

Bu çalışmada, savunma harcamalarının büyüme üzerindeki etkisi incelenmiştir. Çalışma kapsamına alınan 26 NATO ülkesine ait istihdam, sabit sermaye yatırımları ve savunma harcamaları bağımsız değişken, GDP ise bağımlı değişken olarak kullanılmıştır. Çalışmada kullanılan 1991-2016 dönemine ait yıllık veriler, Dünya Bankası (WB), Uluslararası Para Fonu (IMF), Uluslararası Çalışma Örgütü (ILO) ve Stockholm Uluslararası Barış Araştırmaları Enstitüsü (SIPRI)’den elde edilmiştir. Analizde kullanılan değişkenler arasındaki uzun dönem katsayıları Panel AMG tahmincisi yardımıyla tahmin edilmiştir. Çalışma neticesinde, sabit sermaye yatırımı, istihdam ve savunma harcamalarının uzun dönemde büyümeyi etkilediği gözlenmiştir. Sabit sermaye yatırımı ve istihdamın, büyüme üzerindeki etkisi pozitif yönde; savunma harcamalarının ise negatif yöndedir. Bu sonuç çerçevesinde; savunma harcamalarının milli gelir içinde optimal değerinin tespit edilmesinin, ardından da yüksek değere sahip savunma harcamalarının stratejik savunma yönetimi ve etkin tedarik zinciri yönetimiyle pozitif dışsallık yaratacak ve büyümeyi teşvik edecek optimal değere çekilmesinin uygun olacağı söylenebilir
The Impact of Covid-19 on Economic Growth
Authors: Suparmono Suparmono
Published: April 2021

The Covid-19 pandemic in Indonesia since March 2020 has had an impact on negative economic growth for two quarters, namely minus 5.2 percent in the second quarter and minus 3.49 percent in the third quarter (yoy). Likewise, the economic growth of Kulon Progo Regency is expected to experience a drastic decline in 2021, after 2019/2019 had the highest growth reaching 18 percent.This article aims to analyze impact the Covid-19 pandemic has on the economy growth of Kulon Progo Regency per economic sector. This article also projections Kulon Progo's economic growth until 2024 using eleven projection methods. From the results of the projections carried out, the Gross Regional Domestic Product (GRDP) of Kulon Progo Regency in 2020 is predicted to slow down due to the Covid-19 pandemic case which affects almost all sectors. However, this decline only occurred in 2020, because in the following year several sectors are predicted to increase in line with the improving situation and operation of infrastructure projects. Several sectors that will increase, such as the transportation and warehousing sectors, due to normal activities at Yogyakarta International Airport (YIA). Based on the optimistic, moderate, and pessimistic scenario, Kulon Progo Regency's economic growth will continue to grow positively. There are two contributions of this research, firstly analyzing the impact of the pandemic and projecting the impact for the next 4 years and secondly, the projection is carried out using the best model of eleven methods.
Pergantian Dewan Komisaris Dan Dewan Direksi Terhadap Pengungkapan Laporan Keberlanjutan
Authors: Novitasari Bunga , Putra Andi Manggala , Saebani Akhmad
Published: April 2021

This study aims to examine the turnover of the board of commissioners, board of directors, audit committee, and independent board of directors on the disclosure of sustainability reports. In this study turnover was measured using member recruitment and member removal. The sample in this study amounted to 135 samples from 45 financial companies listed on the Indonesia Stock Exchange during the 2016-2018 period. The analysis technique used is panel data regression analysis using STATA 13. The results of this study found that the recruitment of the board of commissioners, the board of directors, and the audit committee have a significant effect on disclosure of sustainability reports. The recruitment of an independent board of directors has no significant effect on disclosure of sustainability reports. While the removals of board of commissioners and directors have no effect. This study provides a new understanding of corporate governance in which the recruitment of members of the board of commissioners and directors will affect the disclosure of corporate sustainability reports. This study uses a new measure, that is the recruitment and removal of members of the board of commissioners and directors.
Effect of asymmetric thin TiN buffer layer for switching in NbOx layer
Authors: Hatanaka R. , Morimoto M. , Nakamura S. , Shimizu T. , Ito T. , Shingubara S.
Published: April 2021

In the coming years, threshold switching based on insulator-metal phase transition (IMT) devices is expected to be applied in selector devices for reducing sneak currents and building blocks for neuromorphic computing. In this work, we fabricated IMT devices using NbOx as an insulator layer and compared the device performance for two cases with metal electrodes: an asymmetric electrode device of stacked Pt/Ti/TiN/NbOx/Pt films, and a symmetric electrode device of Pt/Ti/TiN/NbOx/TiN/Ti/Pt. We changed the atomic ratio of Nb and O in NbOx films by controlling the argon-to-oxygen flow ratio during reactive sputtering. In the case of the asymmetric device, we observed a clear hysteresis loop in the current-voltage characteristics, indicating threshold switching only when a positive voltage was applied to the top electrode. We proposed a model in which a domain of the NbO2 phase is present in contact with a filament with oxygen vacancies, with its size changing depending on the direction of the electric field. On the other hand, in the case of the symmetrical device, nearly symmetric hysteresis loops were observed for both positive and negative voltage sweeps.
Private network optimization
Authors: Ganie Aadil Gani
Published: April 2021

The main challenging task in laying a network is not to define its topology but to calculate its cost-benefit analysis, which is a research-oriented work. In any network, be it intra or internetwork, the main focus is always on optimizing cost and bandwidth. PSWAN is a medium-sized network at the Directorate of information technology India; this networking project provides internet services to many governmental and private offices. Optimization was required as the number of devices connected to this network was more. Two parameters that were optimized are 1. Bandwidth, and 2. Cost. Cost optimization was achieved by shifting some small networks like school or medium-size office to broadband. While bandwidth optimization was achieved by global load balancing, minimize latency, packet loss monitoring and bandwidth management. During optimization, no hardware change was done; Opnet software was used to calculate the results. The proposed optimized network architecture shows promising results as compared to the existing one.
JUMLAH PASIEN DAN KELENGKAPAN PERALATAN TERHADAP RISIKO GANGGUAN MUSKULOSKELETAL PADA PRAKTISI GIGI DI PUSKESMAS
Authors: Wulandari Della , Kamelia Emma , Miko Hadiyat
Published: April 2021

Musculoskeletal disorders are a group of symptoms related to muscle tissue, tendons, ligaments, cartilages, nervous system, bone structure and blood vessels that are influenced by biomechanical factors such as duration, frequency and infrastructure for performing the action. Data on dental practitioners who take preventive measures against musculoskeletal disorders is 64.3%, in the form of correct work position or posture, 14.1%, the use of adequate ergonomic equipment 3.1%, taking 1.8% leave from work and doing a combination of two or more of these precautions 41%. Objective: to see an overview of the number of patients, the completeness of equipment and the risk of musculoskeletal disorders in dental practitioners and to find the relationship between the three. Method: cross sectional with a sampling of 20 people consisting of 13 dentists and 7 dental therapists. The assessment of the number of patients used primary and secondary data from the puskesmas annual report, assessment of equipment completeness using a check list and assessment of musculoskeletal disorders using a Nordic Body Map questionnaire. Results: the mean value of the number of patients served by dental practitioners at the health center was 13.3 with low criteria, 74.42% of the criteria were incomplete and 32.7 with low criteria The results of the Pearson Correlation statistical test Sig. (2-tailed) above the critical value ? = 0.005. Conclusion: There is no relationship between the number of patients and the completeness of equipment with the risk of musculoskeletal disorders in Dental Practitioners at Community Health Centers Sukabumi City.
MENGUNYAH BUAH APEL ROYAL GALA TERHADAP PEMBENTUKAN PLAK DAN DERAJAT KEASAMAN SALIVA PADA SISWA KELAS VI SDIT ASSUNNAH KOTA CIREBON
Authors: Sulistyanti Aprillia Dini , Kamelia Emma , Miko Hadiyat , Ambarwati Tritania , Setiana Rena
Published: April 2021

Plaque and pH saliva are factors that can cause dental caries. The prevalence of caries according to RISKESDAS (2018) reached 45.3% in Indonesia. WHO (2012) states that the prevalence of caries for school children at 60%-90%. They are fond of consuming cariogenic foods that can increase the risk of caries. The Royal Gala Apple contains antibacterial that can inhibit plaque formation and have a slight acid flavor that can stimulate saliva flow. Aim: To know the influence of chewing the Royal Gala Apples to plaque formation and pH saliva in grade VI students SDIT Assunnah Cirebon. Method: Quasi experiment with one group pretests posttest design. Samples of 33 students. The samples were instructed to chew the Royal Gala Apple 100 gr for 5 minutes. Plaque measured by PHP index and pH saliva is measured with universal indicator paper. Results: The normality test of Kolmogorov-Smirnov is obtained by the plaque and pH saliva results before and after chewing the royal Gala p-value of < 0.05 so, that distribution data is abnormal. Data analyzed using Wilcoxon test was obtained PHP plaque index and pH saliva before and after chewing Apple Royal Gala p-value: 0.000 (sig < 0.05) Conclusion: there is a chewing effect of the Royal Gala Apple Fruit against plaque formation and pH saliva in grade VI students SDIT Assunnah Cirebon.
Religione, scienza e pandemia
Authors: Campani Giovanna
Published: April 2021

The article is inspired by the protests of an important part of the Catholic world against the interdiction of religious liturgies, during the second “confinement” – French term for the lockdown –, imposed by the Macron government at the end of October 2020. The protest resulted in demonstrations in front of the churches, strongly calling for the restoration of masses. The protest was further intensified when the authorization for Masses was given, but with the limit of thirty persons, not one more, not one less – independently of the size of the church. The absurdity of the decision (endorsed by the Scientific Council) reveals the fact that most of the lockdown measures and various curfews are not justified by rigorous scientific arguments. The Catholics kneeling in front of the churches have exposed – and in a blatant way – the obtuse dogmatism of alleged choices inspired by “science”, which seems to reverse the historical positions of religion and science. Moreover, the logic of lockdowns imposes a scientist-like world view that considers religious practice, with its rituals, as non-essential for the life of citizens. The Catholics who demonstrate are opposed to a vision of man and society according to which the only concern is to save the bare biological life – the zoé, animal life that identifies with the natural cycle –, with technical measures ignoring the bios, which concerns the higher faculties of man with his spiritual needs.