bluuebunny/crossref_metadata_2025 huggingface dataset:
RESEARCH OF THE UKRAINIAN COSSACKS IN THE SCIENTIFIC HERITAGE BY D. YA. TELEHIN (according to documents stored in the Scientific Archive of the Institute of Archeology, NAS of Ukraine)
Authors: Stanytsina G. O.
Published: April 2021

The Scientific Archive of the Institute of Archaeology of the National Academy of Sciences of Ukraine keeps the personal holding of the prominent Ukrainian archaeologist Dmytro Telehin (1919—2011), Doctor of historical sciences, Professor, who studied archeological sites from the Paleolithic to the Middle Ages. The entire home archive of the scholar whose materials are arranged according to the archeological periods was brought to the Scientific Archive. Within the thematic complex the documents are arranged by dates and content.

This publication is devoted to those documents of the personal fund D. Ya. Telehin, which relate to the study of archaeological sites and history of the Ukrainian Cossacks. TThe collection contains: field diary, copies of scientific reports on archeological excavations, drawings and plans of the area and excavations, photographs and drawings of finds and other documents. Archival materials related to the study of the Sich territories where the Cossacks lived and their necropolises are located, were dated from 1990 to 1994. Dmytro Telehin inspected and researched the following Cossack Sichs: Tomakivska (1564—1593) near the town of Marhanets; Bazavlutska (1593—1630) near the village of Leninske; Mykytynska (1638—1652) in Nikopol; Chortomlytska or as it was also called Kapulivska, or «old» (1652—1709) near the village of Kapulivka; Pokrovska, which was called «new» (1734—1775), near the village of Pokrovsk in the Kherson region.

The personal stock of D. Ya. Telehin contains the documents that reflect the visit of the scholar to island of Khortytsia, the research of the Oleshkivska Sich (1711—1728), as well as the camp of Severyn Nalyvaiko on Turkachivsky hill near the village of Solonitsa (in 1596), Poltava region. Of considerable interest are the documents about the journey of D.Ya. Telegin to the island of Solovky, Arkhangelsk region where Petro Kalnyshevsky, the last Hetman of the New Sich, has been exiled.

The scholar’s collection also contains his lifetime publications on the topic of the Cossacks, the layout of the book «Cossack times. Sich Zaporiz`ka» and other documents concerning Ukrainian Cossacks, their places of residence and burial.
The Legal Problems of Functioning of the Agrarian Clusters in the Conditions of Opening of the Land Market in Ukraine
Authors: MISINKEVYCH Anna
Published: April 2021

It is devoted to the study of the legal nature of the «agrarian cluster» as a new business entity in the agro-industrial complex of Ukraine in the conditions of opening the land market and decentralization of agricultural lands. The scholar examines the decree of the President of Ukraine and the resolution of the Cabinet of Ministers of Ukraine, which allow territorial communities to dispose of agricultural land at the local level and thus develop agricultural business at the regional level in terms of «agricultural cluster». The author analyzes the legislative support for the activities of «agricultural clusters» in our country through the prism of land law, agricultural law, commercial law and the provisions of scientific doctrine. The main programs of the Government of Ukraine for the last ten years, which were related to the development of the cluster movement in the country, are studied. The legal definition of «agrarian cluster» is studied through the prism of scientific doctrine and foreign experience and the author’s interpretation of this legal institution is offered, which must be included in our current agrarian and commercial legislation. In addition, the author reveals the fundamental legal problems that exist in law on the legal regulation of «agricultural clusters in Ukraine and offered to take a special legal act that would regulate the relationship of these agricultural and amend the commercial legislation. The scientist emphasizes in the article the need to develop and adopt a special state and legal program at the legislative level, which will provide financial, legal, economic, investment and organizational conditions for the creation and operation of «agricultural clusters» in the country and attract foreign investors. Moreover, in the scientific work analyzing the current land legislation and proposes to resolve the legal issue of ownership and use of agricultural land for commercial agriculture «agricultural clusters in the functioning of the land market in subsequent years in Ukraine.
Methods of Smuggling Narcotic Drugs, Psychotropic Substances, their Analogues and Precursors or Counterfeit Medicines and their Criminal Legal Characteristics
Authors: OMELCHUK Oleh , KRUSHYNSKYI Serhii
Published: April 2021

The concept of ways to commit drug smuggling, psychotropic substances, their analogues and precursors or counterfeit medicines that are present in scientific circles is analyzed. The main methods of drug smuggling and their detailed characteristics among the general classification are established and subspecies of ways to commit drug smuggling, which are relevant today, have been established and analyzed. At the same time, each subspecies is described and a clear example is given, which demonstrates the public danger of a particular way of committing drug smuggling. It was established that every year drug traffickers invent even more audacious ways to commit drug smuggling, while involving customs officers and law enforcement agencies in their illegal activities. Also, taking into account the unstable situation in the occupied territories of Ukraine and the realities of today, other illegal ways of smuggling counterfeit medicines have been established, which is quite a dangerous phenomenon. It is determined that the most appropriate and convenient way for the smuggling movement of counterfeit medicines is to forged customs identification documents and the use of fictitious business entities, which is an acute problem and requires new ways to solve this problem, as well as improvement of the legislation itself and the legal system as a whole. The methods of qualification of the above-mentioned offences under criminal law are analyzed and shortcomings regarding such qualifications are identified. A clear example and reasonably the need to make appropriate changes to the current norm, which provides for the responsibility for the smuggling of narcotic drugs, psychotropic substances, their analogues and precursors or counterfeit medicines, followed by the prospect of their use.
Scientific and Practical Characteristics of the Content of the Concept of «Operational and Search Measures»
Authors: KRYVYI Andrii
Published: April 2021

The initial analysis of the state of research in the presented field of scientific intelligence shows that the study of scientific and practical characteristics of the content of the concept of «operational and investigative measures» in the modernized criminal procedure legislation of Ukraine by scientists and practitioners is fragmented. Until now, as now in scientific research, there are scientifically sound views on the «necessity», «priority», «expediency», «social conditionality» of the definition and content of the term «operational and investigative measures». There are many attempts to do this both theoretically and legally. Unfortunately, we are forced to state that there is no single developed scientific practice on the unified concept of «operational and investigative measures», and even more so its legislative consolidation today, despite the fact that this legal institution (phenomenon) it functions successfully, with the help of it certain tasks of operative-search activity are effectively solved, moreover, none, with a few exceptions, scientific-practical publication in the field of operative-search activity, does not do without its mention. The study of scientific and practical developments on the concept of «operational and investigative measures» allowed to formulate a unified definition of its content.
Foreign Experience in Ensuring Secrecy during the Fight against Crime by Police Units
Authors: MAKARENKO Stanislav
Published: April 2021

An effective system of protection of state secrets is one of the guarantees of preserving the integrity and inviolability of any country, regardless of its location. In the context of the protracted armed conflict in eastern Ukraine, this issue is becoming particularly relevant and requires detailed study in the scientific field and appropriate regulation at the legislative level. One of the most effective methods of implementing this is to study the systems of protection of state secrets of the world in order to borrow their leading experience. This article examines the foreign law enforcement experience of ensuring secrecy in combating crime by criminal police units based on the practice of countries such as the United States, Australia, Iraq, Britain, Poland, and others. Emphasis is placed on the fact that as a positive foreign experience in terms of ensuring secrecy in combating crime by the British criminal police, we can single out the statutory mechanism of prohibition through the court of media coverage of certain information containing information classified as restricted. According to the author, the practice of the United States of America to reduce to a minimum the number of documents containing information that is a state secret and its maximum storage exclusively in electronic form on special secure computers is noteworthy. It would be expedient to introduce, as a positive experience, several promising areas of implementation of foreign practice on issues of ensuring secrecy during the implementation of the operational and investigative activities by units of the National Police of Ukraine. It is proposed to introduce into the national criminal law the distinction between criminal actions by officials for failure to ensure secrecy during the operational and investigative activities, depending on the consequences caused and the type of rights and freedoms that have been violated.
Separate Issues Regarding Corporate Rights of the Spouses
Authors: VINTONYAK Nataliia
Published: April 2021

Even though theoretical and practical problems that arise due to acquiring corporate rights by one of the spouses have been widely investigated in the scientific literature, certain aspects regarding corporate rights of the spouses remain relevant and require more in-depth research. It is due to the fact that quite often the spouses invest their marital property in the authorized capital of a corporate entity (for example, a Limited Liability Company (LLC) or a Private Company). For one of the spouses who is a company shareholder, the right to property, which is being contributed to the authorized share capital of the corporation, becomes corporate right. For the other spouse, the mentioned above rights become claim rights, which enable them to later obtain certain sums of money, including compensation for marital property objects invested in the authorized capital of a corporate entity. In this article the author analyzes the judicial practice that regards awarding compensation to one of the spouses in case marital property was invested in the authorized capital of a corporate entity. It has been concluded that judges employ several approaches in the course of setting up the compensation to one of the spouses. Namely, that of the spouses who is not a member of a corporate entity has the right to claim the following: 1) to be compensated for the share of marital property that was invested in the authorized capital of a corporate entity; 2) to be compensated for the share in authorized capital belonging to the spouse who is a member of a corporate entity. The spouse who is not a member of a corporate entity is entitled to compensation only in case marital property was invested in the authorized capital of the corporate entity without their consent and against the interests of the family. The aforementioned will be the key criterion while deciding whether the spouse is entitled to compensation for the marital property invested in the authorized capital of a corporate entity.
Ukrainian Legislation on Competition in the Scope of Convergence with EU Competition Law
Authors: GLADSHTEIN Anna
Published: April 2021

The paper is devoted to the study of national competition legislation of Ukraine in the scope of its convergence with EU Competition Law. The aims of the paper are (1) determination of named convergence between national legislation and EU Competition Law, (2) study of drivers of further adaptation of national competition legislation to the EU Law and (3) study of main legal constructions under the EU Competition Law as base line of transformation of Ukrainian competition legislation. In particular, the author studies means of adaptation of relevant legislation to EU Competition Law, common origins of national competition legislation and main legal constructions, used in national competition legislation (anticompetitive behavior, state subsidies etc.). It is stated, that due to adaptation process it had been done a series of steps, in particular, enactment of legislation towards unification matters of national competition legislation of Ukraine and EU Competition Law. The author noted that the one of the adaptation forms in relevant range is direct implementation of specified legal rules of EU Competition Law under the current legislation of Ukraine. In these circumstances rules aimed at implementation are specified under the Association Agreement between Ukraine and UE. The offered approach, even in the light of its efficiency, takes some legal risks. In particular, named risks arise from cases of laps of acts, which are aimed at implementation under the named Agreement. The author studies the most problematic spheres of national legislation adaptation to the EU Competition Law, in particular state subsidies and application practices of competition rules by relevant authorities (Antimonopoly Committee of Ukraine). The author noted not only the importance of EU Competition Law implementation, but also adjustment of national law of Ukraine with application practices of relevant rules under the EU Competition Law. Special attention of the author is devoted to existence of sufficient quantities of evaluation notions, which accept wide limits discretion for any state institution, which could appreciate relevant provisions. The author concluded, that existence of evaluation notions themselves do not necessarily mean some imperfections or lack of development degree of relevant legislation because of back up possibility provided by unsuitable definitions or heavily regulation. It is stated that sufficient quantities of evaluation notions shall not result in legal regulation as potential negative consequences shall be resolved under the correction of law application practices.
Mechanism of Application of the Public Policy Clause as a Ground for Limitation of the Application of Foreign Law in Private International Law
Authors: LATYNSKYI Mykhailo
Published: April 2021

The article analyzes the essence and peculiarities of the implementation in practice of the mechanism of application of the public policy clause (ordre public) as a basis for limiting the effect of foreign law in private international law. The author argues that the introduction of a unified mechanism for the application of the public policy clause as a basis for restricting the effect of foreign law is in the interests of both the international community and individual states. The sources for determining the constituent elements of the mechanism are regulations (international and national) and judicial (arbitration) practice. Based on their study, it is summarized that the mechanism of application of the public policy clause is a complex legal remedy, the proper functioning of which is impossible without the jurisdiction to take preliminary action to invoke the conflict of laws the first sends to. It is established that the basis for the application of the public policy clause in order to limit the effect of foreign law in the country of the court is a violation of public policy. Discussions arise about the normative consolidation and the peculiarities of establishing conditions in law enforcement activities, the existence of which allows the jurisdictional body to apply such reservations. These conditions, although they may be considered in isolation, function as a whole, forming an interconnected system of restrictions and principles designed to ensure that the court complies with the minimum substantive and formal requirements for the application of the public policy clause. The conditions for applying the reservation in cases of exclusion or restriction of foreign law traditionally include: 1) contradiction of public policycannot be stated by the court on the basis of inconsistency or difference of foreign law from the provisions of public policy; 2) the incompatibility of the mentioned consequences must be, on the one hand, obvious and, on the other hand, sufficiently and consistently substantiated by a court or arbitration tribunal; 3) the difference between the legal, political or economic systems of the relevant foreign state from the systems of the court state cannot serve as a justification for refusing to apply the law of a foreign state.
Time of Opening of Inheritance According to the Legislation of Ukraine
Authors: FEDOSEIEV Denys
Published: April 2021

The article explores time of opening of inheritance under the legislation of Ukraine. The legislation of the category “opening of inheritance” enshrined in the Civil Code of Ukraine is established. The definitions of the concept of «opening of inheritance» available in the legal literature are analyzed and the most substantiated and that corresponds to the legal reality among all analyzed definitions of the category «opening of inheritance» is established. Emphasis is placed on the fact that a significant number of definitions of the concept of «opening of inheritance» is identified with the onset of certain legal facts, and not always taken into account all the necessary circumstances. It is emphasized that for the opening of the inheritance it is also important to have a rule of civil law, which regulates the issue and civil legal personality of the participants in the inheritance. It is noted that the time of heritage opening is an integral part of the concept of «opening of inheritance». The normative and scientific definitions of the concept of «time of heritage opening» are clarified. The analysis is carried out and it is emphasized that some statements are incorrect in the context of understanding the time of heritage opening, in particular, regarding the identification of understandings of the concepts «time of heritage opening», «opening of inheritance», «death of the testator». The own approach to understanding of a category «time of heritage opening» is offered. Circumstances that are directly related to the time of the opening of the inheritance and for which the time of the opening of the inheritance has legal consequences have been established. Attention is drawn to the fact that the time of the opening of the inheritance is in direct interdependence and interaction with such categories of civil law as «term», «term», and «moment». The relationship between the concepts of «term», «term», and «moment» is analyzed. It is proved that with the time of the opening of the inheritance, the terms that have a direct significance for the inheritance process begin. The list of terms in the inheritance law which begin from the date of death of the person (testator) or the announcement of its deceased is defined. The legal significance of the opening of inheritance and the time of heritage opening for inheritance law and inheritance, as well as the need for further research in the relevant field are substantiated.
O DESAFIO DA CONCRETIZAÇÃO E EFETIVA PROTEÇÃO DOS DIREITOS FUNDAMENTAIS EM TEMPOS DE CRISE DA PÓS MODERNIDADE
Authors: Amorim Renata Alves
Published: April 2021

A realidade global contemporânea, seus novos rearranjos sócias, políticos  econômicos  permitiram novos debates sobre a compreensão da performance do Estado Democrático de Direito, do conteúdo constitucional e da sistemática de proteção de direitos fundamentais, pois embora o princípio da preservação da dignidade da pessoa humana tenha adquirido o status normativo mais significativo já percebido, os desafios da modernidade como o agravamento de desigualdades, de mazelas sociais, e instabilidades econômicas e políticas, acabam por fomentar frustrações sistemáticas quanto às expectativas democráticas frente à realidade social, que geram inquietações relevantes quanto ao desafio da efetiva concretização e proteção dos direitos fundamentais na sociedade. Busca-se portanto, evidenciar a paulatina recepção desses direitos fundamentais no ordenamento jurídico ocidental, sua essencialidade e progressiva positivação como guião emancipatórios em prol do desenvolvimento social, com a finalidade de propor uma releitura paradigmática conforme o posicionamento de Boaventura de Sousa dos Santos e sua interpretação crítica sobre tal problemática, na tentativa de corroborar o papel fundamental tanto do Estado Democrático de Direito como da sociedade civil na renovação do caráter emancipatório do direito.
UMA VISÃO SOBRE AÇÃO, PROVA E PENA AO LOGO DA HISTÓRIA
Authors: Brambilla Taciany Amaral de Figueiredo
Published: April 2021

Este trabalho está centrado na verificação da evolução dos institutos penais: ação, prova e pena no decorrer da história, nas civilizações que influenciaram a formação do pensamento criminal ocidental. Com isso pretende-se oferecer bases para a compreensão dos referidos institutos e lançar luzes sobre seu desenvolvimento atual, de forma a evitar equívocos cometidos no passado. Para tanto, será realizado um excurso histórico que remonta as sociedades arcaicas e clássicas, ao processo pré-moderno, processo moderno, processo contemporâneo e ao 11 de setembro juntamente com suas repercussões nas ciências criminais. Para desenvolver a referida pesquisa foi utilizada a abordagem dedutiva e indutiva a partir da pesquisa bibliográfica, na qual a análise de dados se realizou mediante a análise de conteúdo para a produção de uma pesquisa com finalidade descritiva.   Palavras-chave: Ação; Prova; Pena; História; Pensamento Criminal Ocidental.
RESPON PERTUMBUHAN TANAMAN CABAI MERAH TERHADAP BERBAGAI KONSENTRASI GARAM PADA INCEPTISOL JATINANGOR
Authors: Perdana Ibnu Rizki , S Mieke Rochimi , Suryatmana Pujawati
Published: April 2021

Chili (Capsicum annum L) was one of the vegetable commodities that have a significant  economic value. Farmland narrowed due to land conversion led to a shift of fertile agricultural lands into marginal lands such as saline land. This research aimed to determine respond of chili plant growth  to salinity stress in Inceptisols. The experiment was conducted in August-October 2020 with located at Ciparanje Experimental field of Faculty of Agriculture, Padjadjaran University, Jatinangor District, Sumedang Regency. This research used randomized block design using four level treatment of NaCl concentration: 0 dS/m (a0), 2 dS/m (a1), 4 dS/m (a2), and 6 dS/m (a3). The result showed that there was no significant between treatment soil salinization of plant growth parameters like plant height and shoot root ratio but significant of number of leaves at 7 day after plant and canopy width at 28 day after plant on treatment salinization 6 dS/m.
The patterning toolbox FIB-o-mat: Exploiting the full potential of focused helium ions for nanofabrication
Authors: Deinhart Victor , Kern Lisa-Marie , Kirchhof Jan N , Juergensen Sabrina , Sturm Joris , Krauss Enno , Feichtner Thorsten , Kovalchuk Sviatoslav , Schneider Michael , Engel Dieter , Pfau Bastian , Hecht Bert , Bolotin Kirill I , Reich Stephanie , Höflich Katja
Published: April 2021

Focused beams of helium ions are a powerful tool for high-fidelity machining with spatial precision below 5 nm. Achieving such a high patterning precision over large areas and for different materials in a reproducible manner, however, is not trivial. Here, we introduce the Python toolbox FIB-o-mat for automated pattern creation and optimization, providing full flexibility to accomplish demanding patterning tasks. FIB-o-mat offers high-level pattern creation, enabling high-fidelity large-area patterning and systematic variations in geometry and raster settings. It also offers low-level beam path creation, providing full control over the beam movement and including sophisticated optimization tools. Three applications showcasing the potential of He ion beam nanofabrication for two-dimensional material systems and devices using FIB-o-mat are presented.
Synthesis, biological evaluation and molecular docking studies of new 2-ethoxy-4-{[3-alkyl(aryl)-4,5-dihydro-1H-1,2,4-triazol-5-on-4-yl]-azomethine}-phenyl benzenesulfonate derivatives on human aldose reductase enzyme
Authors: Özdemir Gül , Kılınç Namık , Manap Sevda , Beytur Murat , Alkan Muzaffer , Yüksek Haydar
Published: April 2021

A series of 2-ethoxy-4-{[3-alkyl(aryl)-4,5-dihydro-1H-1,2,4-triazol-5-on-4-yl]-azomethine}-phenyl benzenesulfonates (3) were synthesized from the reactions of 3-alkyl(aryl)-4-amino-4,5-dihydro-1H-1,2,4-triazol-5-ones (1) with 2-ethoxy-4-formyl-phenyl benzenesulfonate (2). N-acetyl derivatives (4) of compounds 3 were also obtained. Then, the compounds 3 have been treated with morpholine and 2,6-dimethylmorpholine in the presence of formaldehyde to synthesize 2-ethoxy-4-{[1-(morpholine-4-yl-methyl)-3-alkyl(aryl)-4,5-dihydro-1H-1,2,4-triazol-5-on-4-yl]-azomethine}-phenyl benzenesulfonates (5) and 2-ethoxy-4-{[1-(2,6-dimethylmorpholine-4-yl-methyl)-3-alkyl(aryl)-4,5-dihydro-1H-1,2,4-triazol-5-on-4-yl]-azomethine}-phenyl benzenesulfonates (6), respectively. The structures of twenty-six new compounds were identified by using elemental analysis, IR, 1H NMR, 13C NMR, and MS spectral data. In addition, in vitro antibacterial activities of the new compounds were evaluated against six bacteria such as Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis, Bacillus cereus and Klepsiella pneumonia according to agar well diffusion method. Furthermore, in order to determine the possible antidiabetic properties of the synthesized 1,2,4-triazole derivatives, inhibition effects on the AR enzyme were investigated and molecular docking studies were carried out to determine the receptor-ligand interactions of these compounds. IC50 values of triazole-derived compounds (6a, 6b, 6d-g) against AR enzyme were determined as 0.95 µM, 0.75 µM, 1.83 µM, 0.62 µM, 1.05 µM, 1.06 µM, respectively. Considering the docking scores and binding energies obtained docking studies, it has been shown that molecules fit very well to the active site of the AR enzyme.
Identification of Salmonella spp. strains in poultry products and their impact on Public Health
Authors: JUNCU Olga , STARCIUC Nicolae , OSADCI Natalia , ANTOHII Tatiana
Published: April 2021

Introduction. Poultry meat and eggs represent a risk of contamination with zoonotic bacterial agents. This requires permanent laboratory monitoring throughout the production chain segment.

Material and methods. The research material consisted of samples retrieved from poultry carcasses and eggs for current consumption. There were examined 80 samples of eggs and 110 samples of poultry carcasses.

Results. S. Gallinarum, S. Enteritidis and S. Infantins serotypes were isolated in 12.7% of samples out of 110 examined carcasses, whereas S. Gallinarum, S. Dublin și S. Typhimurium serotypes were detected in 6.25% of 80 egg samples.

Conclusions. Bacteriological research on poultry carcasses and eggs showed the presence of pathogenic serotypes of Salmonella spp., which is a major risk to public health.
DETECTION OF PULSARS AMONG NEUTRON STARS AND
ELECTROMAGNETIC RADIATION SOURCES USING MACHINE LEARNING METHODS
Authors: Eshenko R. A. , Petrova M. C. , Shvets V. V.
Published: April 2021

This article describes a way to simplify the process of confirming hypotheses about whether the source of electromagnetic radiation is a pulsar by using modern machine learning methods. In the course of the work, data from more than 17,000 radiation sources were analyzed and an image recognition algorithm that detects pulsars with an accuracy of up to 98 % was used
ON THE JUDICIAL DISCRETION IN THE FRAMING OF CRIMINAL LAW SANCTIONS
Authors: Antonov I. M.
Published: April 2021

The article examines the issue of limiting judicial discretion in the framing of sanctions of criminal law norms. The approaches to its solution available in the criminal law doctrine are analyzed. The author comes to the conclusion that the establishment of optimal limits of judicial discretion is one of the main tasks of the legislator and a necessary condition for the effective application of criminal law
MONITORING OF GOODS TURNOVER AS A SPECIAL FORM OF
STATE CONTROL
Authors: Kovalenko E. G.
Published: April 2021

The article studies the features of monitoring of goods turnover, including marking of goods, as well as turnover in the state information system of monitoring over turnover of goods involved in the relations of the operator issuing the codes, marking, collecting information, its storage and provision. The marking functions are defined: the function of analysis of wholesale and retail turnover, information function, identifying and control functions
NOVELS OF LOCAL SELF-GOVERNMENT
Authors: Lebedeva Y. N.
Published: April 2021

The aim of this article is to analyze the innovations in the Constitution of the Russian Federation concerning local self-government, trends and key problems of the legal development of the institution of local self-government.
APPLIED INFORMATICS AT THE UNIVERSITY WITH ECONOMIC PROFILE
Authors: Perminova Z. G.
Published: April 2021

The article presents the analysis of the activity of the Department of Information Systems in Economy in the bachelors training in the field of «Applied Informatics». The data obtained by the questionnaire survey of the graduate group was used for the research
ANALYTICAL EXPRESSION FOR UNCERTAINTY PROPAGATION OF AERIAL COOPERATIVE NAVIGATION
Authors: Faghihinia Ali , Amiri Atashgah M. A. , Mehdi Dehghan S. M.
Published: April 2021

In this paper, the propagation of uncertainty in a cooperative navigation algorithm (CNA) for a group of flying robots (FRs) is investigated. Each FR is equipped with an inertial measurement unit (IMU) and range-bearing sensors to measure the relative distance and bearing angles between the agents. In this regard, an extended Kalman filter (EKF) is implemented to estimate the position and rotation angles of all the agents. For further studies, a relaxed analytical performance index through a closed-form solution is derived. Moreover, the effects of the sensors noise covariance and the number of FRs on the growth rate of the position error covariance is investigated. Analytically, it is shown that the covariance of position error in the vehicles equipped with the IMU is proportional to the cube of time. However, the growth rate of the navigation error is, considerably more rapid compared to a mobile robot group. Furthermore, the covariance of position error is independent of the path and noise resulting from the relative position measurements. Further, it merely depends on both the size of the group and noise characteristics of the accelerometers. Lastly, the analytical results are validated through comprehensive Guidance, Navigation, and Control (GNC) in-the-loop simulations.
EVALUATION OF THE INNOVATIVE VALUE PROPOSITION FOR THE RAIL FREIGHT TRANSPORT: AN INTEGRATED DEMATEL–ANP APPROACH
Authors: Milenković Miloš , Val Susana , Lutovac Dejan , Bojović Nebojša , Knežević Nikola
Published: April 2021

Freight transport represents a very dynamic and competitive market with high requirements for reliability, lead time, cost, flexibility and visibility of transport service. Rationalization of transport service, reduced travelling time and reliable delivery times represent the main prerequisites for lowering the costs and increasing the efficiency of entire transport chain. These performance indicators actually represent the main factors affecting the shipper’s mode choice. Improvement of these factors could be achieved by improved coordination between rail and non-rail-related stakeholders involved in freight transport service planning and realization. Since this solution requires a multi-stakeholder collaboration, it is needed to evaluate the interests of each of them in order to derive a preferred set of indicators, which will facilitate a collectively accepted solution and value alignment of all involved actors. In this paper, the preferred set of indicators was selected by using the DEcision MAking Trial and Evaluation Laboratory (DEMATEL) model technique integrated with the Analytic Network Process (ANP). DEMATEL is applied to analyse the causal relationships among the relevant dimensions and among the criteria within each dimension. The causal relationships are then used in ANP for determining the weights of the criteria. An empirical case study based on implementation of information sharing platform in rail intermodal transport chain is presented to demonstrate the effectiveness of the proposed approach. Based on this study the attributes that belong to reliability (“departing / arriving on-time”, “cancelled services”), lead time (“idle time”) and investment cost (“organizational culture”, “business process redesign”) dimensions represent five the most critical factors for obtaining a collectively accepted solution. This effective evaluation model enables policy makers and stakeholders in transportation / logistics to understand and conduct appropriate actions towards fulfilling the objectives for greener transportation.
One Channel to Rule Them All? Constraining the Origins of Binary Black Holes Using Multiple Formation Pathways
Authors: Zevin Michael , Bavera Simone S. , Berry Christopher P. L. , Kalogera Vicky , Fragos Tassos , Marchant Pablo , Rodriguez Carl L. , Antonini Fabio , Holz Daniel E. , Pankow Chris
Published: April 2021

The second LIGO–Virgo catalog of gravitational-wave (GW) transients has more than quadrupled the observational sample of binary black holes. We analyze this catalog using a suite of five state-of-the-art binary black hole population models covering a range of isolated and dynamical formation channels and infer branching fractions between channels as well as constraints on uncertain physical processes that impact the observational properties of mergers. Given our set of formation models, we find significant differences between the branching fractions of the underlying and detectable populations, and the diversity of detections suggests that multiple formation channels are at play. A mixture of channels is strongly preferred over any single channel dominating the detected population: an individual channel does not contribute to more than ≃70% of the observational sample of binary black holes. We calculate the preference between the natal spin assumptions and common-envelope efficiencies in our models, favoring natal spins of isolated black holes of ≲0.1 and marginally preferring common-envelope efficiencies of ≳2.0 while strongly disfavoring highly inefficient common envelopes. We show that it is essential to consider multiple channels when interpreting GW catalogs, as inference on branching fractions and physical prescriptions becomes biased when contributing formation scenarios are not considered or incorrect physical prescriptions are assumed. Although our quantitative results can be affected by uncertain assumptions in model predictions, our methodology is capable of including models with updated theoretical considerations and additional formation channels.
Technique for Separating Velocity and Density Contributions in Spectroscopic Data and Its Application to Studying Turbulence and Magnetic Fields
Authors: Yuen Ka Ho , Ho Ka Wai , Lazarian Alex
Published: April 2021

Based on the theoretical description of position–position–velocity (PPV) statistics in Lazarian & Pogosyan, we introduce a new technique called the velocity decomposition algorithm (VDA) for separating the PPV fluctuations arising from velocity and density fluctuations. Using MHD turbulence simulations, we demonstrate its promise in retrieving the velocity fluctuations from the PPV cube in various physical conditions and its prospects in accurately tracing the magnetic field. We find that for localized clouds, the velocity fluctuations are most prominent in the wing part of the spectral line, and they dominate the density fluctuations. The same velocity dominance applies to extended H i regions undergoing galactic rotation. Our numerical experiment demonstrates that velocity channels arising from the cold phase of atomic hydrogen (H i) are still affected by velocity fluctuations at small scales. We apply the VDA to H i GALFA-DR2 data corresponding to the high-velocity cloud HVC186+19-114 and high-latitude galactic diffuse H i data. Our study confirms the crucial role of velocity fluctuations in explaining why linear structures are observed within PPV cubes. We discuss the implications of VDA for both magnetic field studies and predicting polarized galactic emission that acts as the foreground for cosmic microwave background studies. Additionally, we address the controversy related to the filamentary nature of the H i channel maps and explain the importance of velocity fluctuations in the formation of structures in PPV data cubes. VDA will allow astronomers to obtain velocity fluctuations from almost every piece of spectroscopic PPV data and allow direct investigations of the turbulent velocity field in observations.
Discovery and Timing of Three Millisecond Pulsars in Radio and Gamma-Rays with the Giant Metrewave Radio Telescope and Fermi Large Area Telescope
Authors: Bhattacharyya B. , Roy J. , Johnson T. J. , Ray P. S. , Freire P. C. C. , Gupta Y. , Bhattacharya D. , Kaninghat A. , Stappers B. W. , Ferrara E. C. , Sengupta S. , Rathour R. S. , Kerr M. , Smith D. A. , Parkinson P. M. Saz , Ransom S. M. , Michelson P. F.
Published: April 2021

We performed deep observations to search for radio pulsations in the directions of 375 unassociated Fermi Large Area Telescope γ-ray sources using the Giant Metrewave Radio Telescope (GMRT) at 322 and 607 MHz. In this paper we report the discovery of three millisecond pulsars (MSPs), PSR J0248+4230, PSR J1207–5050, and PSR J1536–4948. We conducted follow-up timing observations for ∼5 yr with the GMRT and derived phase-coherent timing models for these MSPs. PSR J0248+4230 and J1207–5050 are isolated MSPs having periodicities of 2.60 ms and 4.84 ms. PSR J1536–4948 is a 3.07 ms pulsar in a binary system with an orbital period of ∼62 days about a companion of a minimum mass of 0.32 M
⊙. We also present multifrequency pulse profiles of these MSPs from the GMRT observations. PSR J1536–4948 is an MSP with an extremely wide pulse profile having multiple components. Using the radio timing ephemeris we subsequently detected γ-ray pulsations from these three MSPs, confirming them as the sources powering the γ-ray emission. For PSR J1536–4948 we performed combined radio–γ-ray timing using ∼11.6 yr of γ-ray pulse times of arrival (TOAs) along with the radio TOAs. PSR J1536–4948 also shows evidence for pulsed γ-ray emission out to above 25 GeV, confirming earlier associations of this MSP with a ≥10 GeV point source. The multiwavelength pulse profiles of all three MSPs offer challenges to models of radio and γ-ray emission in pulsar magnetospheres.
Rotational Mass Shedding from Asteroid (6478) Gault
Authors: Luu Jane X. , Jewitt David C. , Mutchler Max , Agarwal Jessica , Kim Yoonyoung , Li Jing , Weaver Harold
Published: April 2021

The ∼4 km diameter main belt asteroid 6478 Gault has ejected dust intermittently since at least 2013. The character of the emission, including its episodic nature and the low speed of the ejected particles (V ∼ 0.15 m s−1), is most consistent with mass loss from a body rotating near rotational breakup. Owing to dust contamination of the nucleus signal, this conclusion had not yet been confirmed. To test this idea, we have obtained new images of Gault in 2020 August in the absence of dust. Our photometry shows a lightcurve with a very small amplitude (maximum ∼0.05 mag) and a periodicity of 2.55 ± 0.10 hr. The new observations are consistent with a model in which Gault is rotating near breakup, with centrifugal forces responsible for its episodic mass loss. Approximated as a strengthless (fluid) spherical body, the implied density is ρ = 1700 kg m−3. We use the Froude number Fr, defined here as the ratio between centrifugal force and gravitational force, as a way to investigate mass-loss regimes in fast-spinning asteroids and find that mass shedding starts at Fr ∼ 0.5.
Proxy-based Prediction of Solar Extreme Ultraviolet Emission Using Deep Learning
Authors: Pineci Anthony , Sadowski Peter , Gaidos Eric , Sun 孙旭 Xudong 东
Published: April 2021

High-energy radiation from the Sun governs the behavior of Earth’s upper atmosphere and such radiation from any planet-hosting star can drive the long-term evolution of a planetary atmosphere. However, much of this radiation is unobservable because of absorption by Earth’s atmosphere and the interstellar medium. This motivates the identification of a proxy that can be readily observed from the ground. Here, we evaluate absorption in the near-infrared 1083 nm triplet line of neutral orthohelium as a proxy for extreme ultraviolet (EUV) emission in the 30.4 nm line of He ii and 17.1 nm line of Fe ix from the Sun. We apply deep learning to model the nonlinear relationships, training and validating the model on historical, contemporaneous images of the solar disk acquired in the triplet He i line by the ground-based SOLIS observatory and in the EUV by the NASA Solar Dynamics Observatory. The model is a fully convolutional neural network that incorporates spatial information and accounts for the projection of the spherical Sun to 2d images. Using normalized target values, results indicate a median pixelwise relative error of 20% and a mean disk-integrated flux error of 7% on a held-out test set. Qualitatively, the model learns the complex spatial correlations between He i absorption and EUV emission has a predictive ability superior to that of a pixel-by-pixel model; it can also distinguish active regions from high-absorption filaments that do not result in EUV emission.
First record of two squirrelfishes, Sargocentron spinosissimum and Sargocentron tiereoides (Actinopterygii, Beryciformes, Holocentridae) from the Egyptian Mediterranean coast
Authors: Deef Lamiaa Elsayed Mokhtar
Published: April 2021

Holocentrinae and Myripristinae (Holocentridae) are among the most apparent species in the nocturnal reef fish community. However, there is no clear assent regarding their phylogenetic relations, which is reported in their complicated taxonomic history. In this study, Sargocentron spinosissimum (Temminck et Schlegel, 1843) and Sargocentron tiereoides (Bleeker, 1853) were reported from the Mediterranean coast of Egypt (Damietta coast). This is the first record of these species which is greatly distributed across Indo-Pacific regions and eastern Africa showed the success of these species to migrate to the Mediterranean water with a good adaptation to the new habitats.

In the presently reported study, 26 morphometric measurements were recorded and cytochrome c oxidase subunit I (COI) barcodes were recovered for a total of 20 specimens (8 from S. spinosissimum and 12 from S. tiereoides).

The specimens from the Damietta coast, Egypt show character states diagnostic of S. spinosissimum: Head is curved. Spinous dorsal fin base straight. Soft dorsal fin base slightly raised. Spinous dorsal fin membranes red. Anterior margin of pelvic and anal fins white. Other fin rays are red. While character states diagnostic of S. tiereoides: Head is straight and pointed. Spinous dorsal fin base almost straight. Soft dorsal fin base not raised and spinous dorsal fin membranes vaguely red. Sequences of both species were submitted to the GenBank and Barcode of Life Database (BOLD) publication database which displayed 99%–100% similarity value S. tiereoides from GenBank and BOLD databases but, S. spinosissimum has not any deposited sequences from GenBank or BOLD.

DNA barcoding based on COI gene was demonstrated as a powerful and useful molecular marker in the identification and differentiation of S. spinosissimum and S. tiereoides fish species.
The first record of the pharaoh cardinal fish, Apogonichthyoides pharaonis (Actinopterygii: Perciformes: Apogonidae), from Libyan waters
Authors: Al Mabruk Sara A. A. , Zava Bruno , Abdulghani Abdulghani , Corsini-Foka Maria , Deidun Alan
Published: April 2021

The occurrence of the pharaoh cardinalfish, Apogonichthyoides pharaonis (Bellotti, 1874), is documented for the first time from the Libyan waters, after two subsequent findings reported in September and November 2020 in the far eastern region of the country. The location of these findings represents the westernmost area of distribution in the southern Mediterranean for this species, which has the western Indian Ocean and Red Sea origin and which entered into the Mediterranean via the Suez Canal.
Taxonomic revision of Habenaria josephi group (sect. Diphyllae s.l.) in the Pan-Himalaya
Authors: Pandey Tirtha Raj , Jin Xiao-Hua
Published: April 2021

Species of the Habenaria josephi group in the Pan-Himalaya region are revised, based on their morphological characters and results of previous molecular phylogenetics. Eight distinctive species are recognised; key to the species, taxonomic descriptions, illustrations and distribution maps are provided. Habenaria josephi is re-instated, based on morphological and molecular evidence; H. wolongensis is synonymised with H. aitchisonii, a neotype for H. tibetica and the lectotypes for H. balfouriana, H. fargesii, H. glaucifolia and H. clarkei are designated.
Herramientas de trabajo colaborativo en el sector de la construcción español. Buenas prácticas para la implementación de la metodología “Último Planificador (LPS)”
Authors: Del Solar Patricia , Del Rio Mercedes , Fuente Raúl , Esteban Celia
Published: April 2021

La innovación que requiere el sector de la construcción es más que simplemente implementar tecnología, es necesario digitalizar el sector y promover el trabajo colaborativo entre las partes interesadas. Muchos países de todo el mundo han incorporado herramientas para facilitar el trabajo colaborativo en sus procesos. En US en particular, son muchas las empresas que están implementando la metodología LPS y están aplicándolas en la construcción junto con las herramientas BIM. En España, sin embargo, la implementación de estas herramientas es relativamente reciente. A través de una encuesta, este artículo busca determinar el nivel de conocimiento que los interesados involucrados en el sector de la construcción español tienen sobre el modelo de trabajo colaborativo, especialmente de las herramientas BIM y LPS. Además, un grupo de expertos propone una selección de Mejores Prácticas (BP) para la aplicación de estas herramientas a un caso de estudio en Madrid (España).