bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALISIS KINERJA DINAS TENAGA KERJA DAN TRANSMIGRASI KABUPATEN LAMPUNG SELATAN DALAM MENCEGAH DAN MENYELESAIKAN PERSELISIHAN HUBUNGAN INDUSTRIAL DI KABUPATEN LAMPUNG SELATAN
Authors:   Program Studi Administrasi Publik, Fakultas Ilmu Sosial dan Ilmu Politik, UTB Lampung, Moelyono Achmad , Asih Selly ,   Program Studi Administrasi Publik, Fakultas Ilmu Sosial dan Ilmu Politik, UTB Lampung
Published: May 2021

Kinerja Dinas Tenaga Kerja dan Transmigrasi Kabupaten Lampung Selatan dalam mencegah dan menyelesaikan perselisihan hubungan industrial adalah dengan melakukan analisis dengan menggunakan indikator kinerja yaitu, Efektifitas, efisiensi, kualitas, produktivitas, Kualitas kehidupan kerja, dan Inovasi. Dengan melakukan analisis Indikator Kinerja terhadap Kinerja Dinas Tenaga kerja dan Transmigrasi Kabupaten Lampung Selatan dalam Mencegah dan menyelesaikan perselisishan hubungan industrial tersebut. Pihak Dinas Tenaga Kerja dan Transmigrasi bagian Hubungan Industrial Seksi Penyelesaian Hubungan Industrial dapat menyusun rencana kerja dan program yang lebih baik dan terus meningkatkan pelayanan kepada masyarakat. Pencegahan dan penyelesaian hubungan industrial oleh Dinas Tenaga kerja dan transmigrasi Kab. Lampung Selatan ini memiliki dampak terhadap stabilitas kerja baik pihak perusahaan dan pihak pekerja. Yang dapat dilihat selama tiga tahun terakhir 2017-2019 berhasil menyelesaian berbagai macam kasus perselisihan di lingkungan Kabupaten Lampung Selatan. Dapat disimpulkan bahwa kinerja Pencegahan dan penyelesaian hubungan industrial Dinas Tenaga Kerja dan Transmigrasi telah membantu menyelesaian konflik para pekerja dengan perusahaan, sehingga membantu mewujudkan lingkungan kerja yang kondusif dan meningkatkan kesejahteraan masyarakat. Dan menurunkan tingkat pengangguran. Kata Kunci: Kinerja, Transmigrasi, Hubungan Industrial
Comparing the molecular graph degeneracy of Wiener, Harary, Balaban, Randi´c and ZEP topological indices
Authors:   DEPARTMENT OF CHEMISTRY AND BIOLOGY NORTH UNIVERSITY CENTER AT BAIA MARE TECHNICAL UNIVERSITY OF CLUJ-NAPOCA VICTORIEI 76, 430122 BAIA MARE, ROMANIA E-mail address: zoitaberinde@ubm.ro E-mail address: zoita berinde@yahoo.com, BERINDE ZOITA-MARIOARA
Published: May 2021

The aim of this paper is to show that the ZEP topological index has better discrimination power than four well known topological indices in molecular chemistry: Balaban index, Harary index, Randic index, and Wiener index.
Controlling autonomous scalar discrete dynamical systems generated by non self Lipschitzian functions
Authors:   DEPARTMENT OF MATHEMATICS AND COMPUTER SCIENCE NORTH UNIVERSITY CENTER AT BAIA MARE TECHNICAL UNIVERSITY OF CLUJ-NAPOCA VICTORIEI 76, 430122 BAIA MARE ROMANIA E-mail address: vberinde@ubm.ro, BERINDE VASILE ,   DEPARTMENT OF MATHEMATICS AND STATISTICS KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS DHAHRAN, SAUDI ARABIA E-mail address: vasile.berinde@gmail.com, KOVACS GABRIELLA ,   DEPARTMENT OF MATHEMATICS AND COMPUTER SCIENCE NORTH UNIVERSITY CENTER AT BAIA MARE TECHNICAL UNIVERSITY OF CLUJ-NAPOCA VICTORIEI 76, 430122 BAIA MARE ROMANIA E-mail address: kovacsgabriella@yahoo.com
Published: May 2021

We apply fixed point techniques of Krasnoselskij type for stabilizing autonomous scalar discrete dynamical systems in the case of Lipschitzian functions.
On some inequalities for s-logarithmically convex functions in the second sense via fractional integrals
Authors:   DEPARTMENT OF MATHEMATICS MUSTAFA KEMAL UNIVERSITY FACULTY OF SCIENCE AND ARTS HATAY, 31000, TURKEY E-mail address: mevluttttunc@gmail.com, TUNC MEVLUT , KAVURMACI-ONALAN HAVVA ,   DEPARTMENT OF MATHEMATICS EDUCATION VAN YUZUNCUYIL UNIVERSITY FACULTY OF EDUCATION VAN, TURKEY E-mail address: havvaonalan@yyu.edu.tr
Published: May 2021

In this paper, the authors establish some new Hadamard type inequalities for s-logarithmically convex functions in the second sense via fractional integrals by using Lemma 1.1 which has been proved by Sarıkaya et al.
On some properties of γ-semi-R0 spaces
Authors:   DEPARTMENT OF MATHEMATICS COLLEGE OF SCIENCE QASSIM UNIVERSITY P. O. BOX 6644, BURAYDAH 51452, SAUDI ARABIA E-mail address: sabiriub@yahoo.com, HUSSAIN SABIR ,   sh.hussain@qu.edu.sa
Published: May 2021

The purpose of this paper is to introduce γ-semi-R0 spaces in terms of γ-semi-open sets which contains the γ-semi-closure of each of its singletons. Some properties of γ-semi-R0 spaces are also discussed and explored.
On the special semigroup “at infinity”
Authors:   DEPARTMENT OF MATHEMATICAL SCIENCES AND COMPUTER SHAHID CHAMRAN UNIVERSITY AHVAZ, IRAN E-mail address: A.M.Aminpour@scu.ac.ir, AMINPOUR ABDOL MOHAMMAD , SEILANI MEHRDAD ,   IRANIAN ACADEMIC CENTER FOR EDUCATION CULTURE AND RESEARCH (ACECR) E-mail address: Seilanimaths@mjdkh.ac.ir, Seilanimaths11@yahoo.com
Published: May 2021

This paper presents an important new technique for studying a particular compact semigroup, N∪{∞}, the one-point compactification of positive integers with usual addition, which is an important semigroup. Indeed, the semigroup N ∪ {∞} is constructed as the quotient semigroup of a particular compact right topological semigroup. In the study of such a semigroup, a major role is played by the substructures called standard oids. For instance, some of the already known results on the structure of N ∪ {∞} are obtained as immediate consequences.
The Voronovskaja-type formula for the Bleimann, Butzer and Hahn operators
Authors:   DEPARTMENT OF MATHEMATICS AND COMPUTER SCIENCE FACULTY OF SCIENCES NORTH UNIVERSITY CENTER AT BAIA MARE TECHNICAL UNIVERSITY OF CLUJ-NAPOCA VICTORIEI 76, 430122 BAIA MARE, ROMANIA E-mail address: barbosudan@yahoo.com, BARBOSU DAN , ACU ANA MARIA ,   UNIVERSITY ”LUCIAN BLAGA” OF SIBIU DEPARTMENT OF MATHEMATICS AND INFORMATICS DR. I. RAT. IU 5-7, 550012 - SIBIU, ROMANIA E-mail address: acuana77@yahoo.com, SOFONEA FLORIN D. ,   UNIVERSITY ”LUCIAN BLAGA” OF SIBIU DEPARTMENT OF MATHEMATICS AND INFORMATICS DR. I. RAT. IU 5-7, 550012 - SIBIU, ROMANIA E-mail address: florin.sofonea@ulbsibiu.ro
Published: May 2021

We present a short and simple proof to the Voronovskaja-type formula for the Bleimann, Butzer and Hahn operators. The proof is essentially based on the relationship between the Bleimann, Butzer and Hahn operators and the Stancu operators.
Grinding Characteristics of Coriander Seed with Reference to Physical Properties and Energy Consumption
Authors: Balasubramanian S  , Raj kumar  , Ram Awatar  , KK Singh
Published: May 2021

Coriander (Coriandrum sativum) at three moisture content (5.7, 11.4 and 17.2 %, db) were ground using a micro pulverizer hammer mill with different grinder screen openings (0.5, 1.0 and 1.5 mm) and feed rate (8, 16 and 24 kg/h) at 3000 rpm. Specific energy consumption were found decreased from 204.67 to 23.09 kJ/kg for increased levels of feed rate and grinder screen openings. The highest specific energy consumption was recorded for 17.2 % moisture content and 8 kg/h feed rate with 0.5 mm screen opening. Average particle size decreased from 0.99 to 0.47 mm with increase of moisture content and decrease in grinder screen opening. It has been observed that the average particle size was minimum at 0.5 mm screen opening and 8 kg/h feed rate. Bond's work index and Kick's constant were increased from 0.61 to 3.07 kWh/kg, 0.073 to 0.324 kWh/kg with the increase of moisture content, feed rate and grinder screen opening, respectively. Size reduction ratio and grinding effectiveness of coriander seed were found decreased from 4.92 to 2.29 and 0.002 to 1.600 with the increase of moisture content, feed rate and grinder screen opening. The loose and compact bulk densities varied from 210 to 475 kg/m3 and 231 to 550 kg/m3, respectively for various mass fractions of sieve analysis. Bond's work index and Kick's constants were affected significantly by feed rate and moisture content for all screen openings except 0.5 mm.
5 Years into Augmented Reality Technology in Education: Research Trends, Bibliometric Study and its Application to Enhance Visualization Skills
Authors: Ali Dayana Farzeeha , Omar Marlissa , Abdullah Abdul Halim , Ibrahim Nor Hasniza , Mokhtar Mahani , Mohd Zaid Norasykin , Johari Nusaila
Published: May 2021

Augmented Reality technology allows users to interact with virtual objects integrated into the real world and real-time. Augmented Reality technology is considered a potential tool to promote the teaching and learning process. This study aims to identify the trends of publications related to Augmented Reality (AR) in education, bibliometric review of the studies as well as its application on enhancing students’ visualization skills in engineering education field. Thus, this study reviewed trends and bibliometric studies focusing on Augmented Reality (AR) in education for the past five years based on the Web of Science (WOS) database, and provide experimental results on the application of augmented reality technology to enhance visualization skills among engineering students. The result from this study proves that augmented reality shows an upward trends in education, as well as the experimental findings indicates positive results in enhancing visualization skills which is one of the reason why augmented reality is frequently used in education field as teaching and learning tools. This study will also provide researchers and educators with knowledge of the research trends of augmented reality in education. This paper will then highlight the most influential authors and countries in this research area as a reference for future researcher
POS-Tagging based Neural Machine Translation System for European Languages using Transformers
Authors: Ganesh Preetham , Rawal Bharat S. , Peter Alexander , Giri Andi
Published: May 2021

The interaction between human beings has always faced different kinds of difficulties. One of those difficulties is the language barrier. It would be a tedious task for someone to learn all the syllables in a new language in a short period and converse with a native speaker without grammatical errors. Moreover, having a language translator at all times would be intrusive and expensive. We propose a novel approach to Neural Machine Translation (NMT) system using interlanguage word similaritybased model training and Part-Of-Speech (POS) Tagging based model testing. We compare these approaches using two classical architectures: Luong Attention-based Sequence-to-Sequence architecture and Transformer based model. The sentences for the Luong Attention-based Sequence-to-Sequence were tokenized using SentencePiece tokenizer. The sentences for the Transformer model were tokenized using Subword Text Encoder. Three European languages were selected for modeling, namely, Spanish, French, and German. The datasets were downloaded from multiple sources such as Europarl Corpus, Paracrawl Corpus, and Tatoeba Project Corpus. Sparse Categorical CrossEntropy was the evaluation metric during the training stage, and during the testing stage, the Bilingual Evaluation Understudy (BLEU) Score, Precision Score, and Metric for Evaluation of Translation with Explicit Ordering (METEOR) score were the evaluation metrics.
Üniversite Öğrencilerinin Dijital Okuryazarlık Becerileri ile Dijital Mahremiyet Kaygısı Arasındaki İlişki
Authors: OKUMUŞ Meryem , ATİLGAN Sait Sinan
Published: May 2021

Mahremiyetin tehdit altında olduğu dijital çağda kullanıcılar, kişisel bilgilerinin nasıl kullanıldığı, paylaşıldığı, korunduğu ve bu bilgilerin yayılması üzerindeki kontrol derecesi konusunda ciddi bir mahremiyet kaygısı duymaktadır. Dijital ortamları her kullanımlarında dijital ayak izlerini bırakan bireyler hem söz konusu ortamlarda var olabilmek adına kişisel bilgilerini gönüllü olarak paylaşmakta hem de kişisel bilgilerinin kötüye kullanılması durumunda yaşayacakları olası ekonomik ve sosyal sonuçlardan da endişe duymaktadırlar. Bu durum da bireylerde mahremiyet/gizlilik paradoksu yaratmaktadır. Günümüzde dijital araçları çok iyi kullanmanın ötesinde kullanıcıların dijital ortamda etkin şekilde var olabilmeleri için gerekli olan bilişsel, sosyolojik ve duygusal becerilerini de kullanmaları gerekmektedir. Dijital okuryazarlık becerileri olarak tanımlanan bu becerilerin bireyleri ile mahremiyet kaygıları arasında bir ilişki olup olmadığının araştırılması bu çalışmanın amacını oluşturmaktadır. İki değişken arasındaki ilişki Buchanan (2007) ve Ng (2012) tarafından geliştirilen ölçekler yardımı ile ölçülmüştür. Araştırma, nicel araştırma desenlerinden yordayıcı ilişkisel desene göre yürütülmüştür. Bu bağlamda Atatürk Üniversitesi İletişim Fakültesinde öğrenim gören öğrenciler özelinde veri toplama tekniklerinden anket tekniği kullanılmış ve anket formu online ortamda öğrencilerle paylaşılmıştır. 457 öğrenci geri dönüş sağlamıştır. Araştırma kapsamında öğrencilerin dijital okuryazarlık becerileri ve dijital mahremiyet kaygıları arasında pozitif yönlü ve doğrusal bir ilişki tespit edilmiştir.
Oyun mu İş mi? Youtube Kidfluencerları Üzerine Karşılaştırmalı Bir Analiz
Authors: KARAKOÇ Elif , ÜNLÜ Türkay Türkan
Published: May 2021

Teknolojik gelişmelerin sosyal medya platformlarında sunduğu olanaklar içinde içerik üreticisi olarak yer alan çocukların konumu, bu çalışmanın çıkış noktasını oluşturmaktadır. Son yıllarda özellikle YouTube platformunda sıklıkla karşılaşılan, ebeveynlerinin yönetimindeki kanalları ile sosyal medyadaki reklam piyasasının etkili üyeleri hâline gelen çocuklar, bu etkileri sebebiyle kidfluencerlar olarak adlandırılmaktadır. Ancak kidfluencerlık olgusu, dijitalleşme ve etik ilişkiselliğine içkin olarak başta çocuk emeğinin metalaşması ve mahremiyet ihlali olmak üzere çocuk olma hakkına ilişkin birtakım sorunsalları beraberinde getirmektedir. Çalışmada, çocuğun dijital emeği bağlamında ve kidfluencerlığın sürdürücü gücü olarak ebeveynlerin rolünü aktaran bir kavram olan sharenting perspektifinde, kidluencerların YouTube’daki üretim pratiklerinin analiz edilmesi amaçlanmıştır. Buradan hareketle çok yönlü bir bakış sunması amacıyla uluslararası ve ulusal ölçekte en fazla maddi kazanç elde eden iki YouTube kidfluencerının kanalı, içerik analizine tabi tutularak karşılaştırmalı olarak incelenmiştir. Çalışmada ulaşılan bulgular çerçevesinde, iki kanalın video içeriklerinin konu ve üretim biçimlerinde farklılıklar tespit edilmesiyle birlikte; kanallarda benzer sharenting uygulamalarının gerçekleştirildiği, çocukların tam zamanlı işçiler olarak edilgen biçimde üretim sürecine katıldıkları ve mahremiyet alanlarının ihlal edildiği sonuçlarına ulaşılmıştır.
The ways to improve of the mechanism of combating modern crime
Authors: Usaty Grigoriy
Published: May 2021

The article is devoted to the issues of organizational and legal support of the mechanism of counteraction to modern crime in the conditions of a significant deterioration of the criminal situation in the state; t examines the conceptual foundations and problems of the mechanism of combating crime and domestic criminal policy; the place and role of counteraction to crime in the state mechanism, its external and internal contours are reconsidered, insufficient elaboration of the corresponding doctrinal (theoretical) provisions is recognized; emphasis is placed on gaps in relevant legislation and inadequate regulatory support of law enforcement agencies (in particular, the lack of legal instruments on issues of anti-crime strategy, forensic examination, etc.Based on the study of the positive experience of the scientific community and the practice of law enforcement, proposals have been formulated in the relevant areas for improving the crime prevention system, increasing the effectiveness of law enforcement agencies in the fight against the shadow economy, organized crime (and its individual manifestations), and an attempt has been made to optimize the modeling of the law enforcement system in the perspective preventive activities in the context of the implementation of the criminological policy of the state, determination of the strategy and tactics of combating crime. Key words: crime, criminal law policy, crime prevention, crime prevention mechanism.
Administrative proceedings in Ukraine: formation and challenges
Authors: Smokovych Mykhailo
Published: May 2021

The article is dedicated to the fifteenth anniversary of the adoption of the Code of Administrative Procedure of Ukraine. In the context of this significant event, the origins of the formation and development of administrative justice in Ukraine have been studied. Practice shows that the importance of administrative justice in the formation and development of Ukraine as a democratic, legal, social state is extraordinary.

It was found that the conceptual approach in terms of the formation of administrative justice, which was originally laid down in the Concept of Judicial and Legal Reform in 1992, was later properly enshrined in the Code of Administrative Procedure of Ukraine in 2006. The essence of the concept is a fair, impartial and timely resolution of disputes in the field of public law by an administrative court in order to effectively protect the rights, freedoms and interests of individuals from violations by the subjects of power. The article analyzes the experience gained in administrative proceedings and highlights some problems of its practical implementation.

It is determined that in order to timely resolve disputes in the field of state and legal relations, to ensure equal distribution of workload among judges of the Administrative Court of Cassation within the Supreme Court and to ensure effective protection of rights, freedoms and interests of individuals, rights and interests of legal entities from violations on the part of the subjects of power, it is necessary to make some changes to the legislation on the judiciary of Ukraine. The legislative changes defined in the article will positively affect the practical implementation of the principles of the rule of law and legality in the state mechanism.

Key words: administrative proceedings, principle of specialization, specialized chambers, equality of legal opportunities of material and procedural nature.
Selected aspects of the competitiveness of Russian universities in the digital environment
Authors:   Synergy University, Vasilev Artem I.
Published: May 2021

The purpose of the article is to reveal, how the development of the digital environment has affected the competition and competitiveness of Russian universities. The article describes the conceptual transformation of the learning process, caused by the development of the digital environment, which led to the emergence of new competitive threats and forms of competition of Russian universities. The author reveals the industry and inter-product areas of competition implemented by Russian universities. Industry competition is the competition of producers of goods using homogeneous, interchangeable resources. In fact, this is a competition for resources between representatives of the same industry, while there may be no product competition, competition in sales. The industry competition of universities, based on constructivism, considers the digital environment as a source of various means and tools of competition. Inter-product competition is competition between substitutes from different industries, that is, between representatives of different industries-producers of products that meet the same need. Inter-product competition is a direction of university competition, which has become more acute with the emergence of MOOCs. To adequately respond to the competitive threats of the digital environment, the author suggests that universities use the principles of connectivism – a new theory of learning that reflects the digital transformation of the educational process. The availability and rapid obsolescence of knowledge in the digital age has led to the fact that knowledge is losing its socio-social value. Learning, searching, finding, understanding, and applying knowledge becomes more valuable. With the application of the principles of connectivism, universities should become more than just organizations that create knowledge and spread values and competencies. They should become part of networks and ecosystems for the dissemination of knowledge that go beyond the boundaries of the university as a separate organization. In this approach, universities develop complex relationships that combine competition and networking.
Fuzzy case models for project management using a multi-ontology approach
Authors:   Postgraduate, National Research University ", Chernovalova Margarita V. ,   MPEI"
Published: May 2021

The article identifies the features of innovative projects that should be taken into account when building models of information processes in decision support systems (DSS) for project management. It is shown that, in terms of taking into account these features, methods for forming knowledge in the form of ontologies and the use of information analysis procedures based on precedent methods seem to be promising. The limitations of existing precedent methods, including those involving the formation of a knowledge base in the form of ontologies for their use in project management, are revealed. Development trends in methods for representing knowledge in the form of ontologies and their use within the framework of precedent approaches are substantiated. The trends are as follows: providing the ability to use several independent ontologies for different subject areas; taking into account the differences of the analyzed projects and creating conditions for the adaptation of ontologies when the indicators of the external and internal environments of the project change. A DSS structure for project management is proposed, which provides the use of several subject and functional ontologies and a developed fuzzy logic algorithm for adapting earlier rational decisions to the current situation. Software tools implementing the proposed models and procedures are described, as well as the results of their application to decision support in managing a project to develop an innovative asynchronous electric motor. It is shown that the proposed approach allows the description of the current situation in a linguistic form. At the same time, in contrast to the known variants of precedent methods based on the use of ontological models, the described algorithm for deriving solutions allows taking into account the characteristics of the analyzed situations related to various subject and functional areas. This allows you to develop recommendations for the allocation of resources for the implementation of design work based on the analysis of positive experience in the implementation of projects of various sizes.
Joint use of OpenMP and MPI technologies on the nodes of the computational cluster
Authors:   Branch of the National Research University ", Fedulov Alexander S. ,   MPEI",   in Smolensk, Fedulov Yaroslav A. ,   Branch of the National Research University "MPEI" in Smolensk, Fedulova Anastasiya S. ,   National Research University "MPEI"
Published: May 2021

This work is devoted to the problem of implementing an efficient parallel program that solves the asigned task using the maximum available amount of computing cluster resources in order to obtain the corresponding gain in performance with respect to the sequential version of the algorithm. The main objective of the work was to study the possibilities of joint use of the parallelization technologies OpenMP and MPI, considering the characteristics and features of the problems being solved, to increase the performance of executing parallel algorithms and programs on a computing cluster. This article provides a brief overview of approaches to calculating the sequential programs complexity functions. To determine the parallel programs complexity, an approach based on operational analysis was used. The features of the sequential programs parallelization technologies OpenMP and MPI are described. The main software and hardware factors affecting the execution speed of parallel programs on the nodes of a computing cluster are presented. The main attention in this paper is paid to the study of the impact on performance of computational and exchange operations number ratio in programs. To implement the research, parallel OpenMP and MPI testing programs were developed, in which the total number of operations and the correlation between computational and exchange operations are set. A computing cluster consisting of several nodes was used as a hardware and software platform. Experimental studies have made it possible to confirm the effectiveness of the hybrid model of a parallel program in multi-node systems with heterogeneous memory using OpenMP in shared memory subsystems, and MPI in a distributed memory subsystems
Experience with control systems and monitoring of the used computing resources of corporate HPC system
Authors:   Moscow Aviation Institute (National Research University), Kataev Andrei A. , Vikulin Maxim A. ,   Moscow Aviation Institute (National Research University)
Published: May 2021

This article discusses modern server monitoring systems. The subject area under review concerns the control and management of high-performance computing systems (HPC). These systems are used in various branches of science and industry for modeling systems and their behavior in various conditions. The speed of the simulation depends on the applied technical solutions as part of the computing complex. These include the type of internal network, the number and types of computing nodes. For computing nodes, consider such parameters as the architecture and model of the processor, the amount of RAM. The features associated with the implementation of specific mathematical models that affect the speed of calculations are not considered in this article. The paper analyzes the existing market solutions and the main concepts used for the management and monitoring systems of such complexes. The systems under consideration are evaluated from an economic and technical point of view. For the available systems, a full-scale study of the cluster management and status monitoring capabilities is conducted. The set of parameters recorded by the monitoring system is taken based on the general architecture of the HPC and the approach to the administration of server systems. The practical part describes the experience of designing and implementing a promising management system. In the system being created, the main focus is on creating a management system. The justification for the need for a separate software product is given in the text of the article. Implementation issues in a specific program code and system environment are omitted, as they depend on the specific execution of the system. The task of creating your own monitoring system is considered insignificant, provided that existing solutions are available.
Tools for automated collection and analysis of sociological information on the territorial identity of city residents
Authors:   Synergy University, Baynova Maria S. , Sokolov Andrey M. ,   Branch of the National Research University "MPEI" in Smolensk
Published: May 2021

The paper proposes an algorithm for automated search and initial analysis of sociological information aimed at studying the territorial identity of city area residents using Internet sources. Communities of social networks, e.g. VKontakte, are considered as the main data source, and websites of topographic objects found in the territories under study are used as auxiliary information sources. It is demonstrated that, in terms of information support, public pages and groups with open or restricted access walls have the greatest potential. The developed algorithm implies selecting relevant groups, finding content concerning area issues, and determining the indices of community activity in discussing territorial problems. The required information is retrieved through the interaction with a social network server with the use of the official Application Programming Interface (API). To identify communities and posts, it is proposed to apply methods of morphological analysis of textual information. The software implementation of the algorithm is described in Python 3.8.5, including original functions for the acquisition of data on communities by their identification numbers, for the formation of a set of urbanonyms for a specified area, and some other ones. The developed program has been used to analyze territorial groups in three areas of Moscow; the results of the analysis enable us to estimate the degree of the territorial identity of their residents. The analysis of the error in the results of automated data collection and processing shows good agreement of these results with manually obtained ones, i.e. the error is 2.6% in the identification of relevant groups and about 3% in the identification of posts on area issues. Therewith, a much higher speed of response and lower labor effort required to perform routine operations allow the algorithm and the implementing computer program to be viewed as an effective tool for sociological research based on data from social networks.
A new species of the genus Potamophylax Wallengren, 1891 (Trichoptera: Limnephilidae) from Qafështamë National Park in Albania
Authors: Ibrahimi Halil , Bilalli Astrit
Published: May 2021

In this paper we describe Potamophylax qafshtamaensis sp. n., a new species of the Potamophylax winneguthi species group, from Qafështamë National Park in Albania. The new species belongs to the Potamophylax tagas species cluster and is most close to Potamophylax hajlos Oláh, 2012 and Potamophylax alsos Oláh, 2014. Potamophylax qafshtamaensis sp. n.  differs from all known species of the P. tagas species cluster by its unique shape of aedeagus. It also differs from its most similar congeners mainly in exhibiting differently shaped inferior appendages and parameres in males, as well as setose sternite IX and the dorsal unsetose plate of the anal tube in female.The new species is microendemic of Qafështamë National Park and is the fifth known species of the Potamophylax tagas species cluster, which is distributed in Albania and Macedonia.
Harmonics Mitigation of a Solar PV-Fuel Cell Based Microgrid System using a Shunt Active Power Filter
Authors: Samal Sarita , Barik Prasanta Kumar , Hota Prakash Kumar
Published: May 2021

The increased penetration of distributed energy resources is inspiring the entire design of conventional electrical power systems. A Microgrid (MG) includes distributed generation, loads, energy storage, and a control system capable of operating in grid-connected mode and/or island mode. The power quality (PQ) issue is one of the main technical challenges in an MG power system. To improve PQ, it is necessary to analyze the harmonic distortion of the system. Moreover, harmonic distortion in MG networks has significantly reduced PQ, affecting the stability of the system. The shunt active power filter (SAPF) has been extensively used to diminish the current harmonics and verified as being the best solution. Hence, in this paper, the impact of PQ issues in an adopted standalone MG system (comprising solar and fuel cell based renewable energy sources) is investigated in the presence of SAPF. The SAPF is realized using a conventional synchronous reference frame (SRF) technique for current generation with a pulse-width modulation voltage source inverter technique to generate pulses for the inverter along with a PI controller to regulate the DC-link capacitor voltage. The proposed model is developed in MATLAB/SIMULINK and the results validate the superiority of the proposed technique over others in terms of harmonic elimination.
An Improved Neural Network Based on Parasitism – Predation Algorithm for an Automatic Voltage Regulator
Authors: Aribowo Widi , Suprianto Bambang , Asto Buditjahjanto I Gusti Putu , Widyartono Mahendra , Rohman Miftahur
Published: May 2021

The parasitism – predation algorithm (PPA) is an optimization method that duplicates the interaction of mutualism between predators (cats), parasites (cuckoos), and hosts (crows). The study employs a combination of the PPA methods using the cascade-forward backpropagation neural network. This hybrid method employs an automatic voltage regulator (AVR) on a single machine system, with the performance measurement focusing on speed and the rotor angle. The performance of the proposed method is compared with the feed-forward backpropagation neural network (FFBNN), cascade-forward backpropagation neural network (CFBNN), Elman recurrent neural network (E-RNN), focused time-delay neural network (FTDNN), and distributed time-delay neural network (DTDNN). The results show that the proposed method exhibits the best speed and rotor angle performance. The PPA-CFBNN method has the ability to reduce the overshoot of the speed by 1.569% and the rotor angle by 0.724%.
Reprocessing effectiveness of gastrointestinal endoscopes in western Algeria hospitals: Infectious risk and biofilm formation
Authors: Sara Hamedi-Gaouar , Hafida Hassaine , Wafa Didi , Samia Bellifa , Laia FernÃ¡ndez-Barat , Anna Motos , Antoni Torres
Published: May 2021

The significant increase in endoscopic procedures can lead to a potential source of cross-infection accompanied by biofilm formation on the devices when the disinfection procedure is unsuitable. This study, the first in Algeria, aims to describe the microbiological quality of gastroscopes used in gastroin-testinal units of western Algeria hospitals and to implement some corrective measures. A total of 132samples from endoscopes were examined over a period of 2 years. Contamination level of samples was evaluated by CFU count. Identification of the isolates was made by MALDI Biotyper System. Biofilm formation was detected by Congo Red Agar and tissue Culture Plate method (TCP). The endoscope-drying effectiveness was analyzed by bacterial count and Scanning Electron Microscopy (SEM). Microbial growth was de-tected in 68.18%of endoscopes; 150strains were isolated: Gram-negative-bacilli (56%), Gram-positive-cocci (26.66%), Gram-positive-bacilli(17.33%); dominant species were Enterobacter cloacae, coagulase-negative Staphylo-cocci, Pseudomonas aeruginosa, Klebsiella pneumoniae and Staphylococcus aureus. Forty one out of 132 samples collected after disinfection disclosed Enterobacteriaceae (41.93%), Pseudomonaceae (16.12%), Staphylococci (30.64%) and Bacillus (11.29%). Using TCP, 96 isolates were good biofilm-producers. The drying reduced significantly the rate of CFU growth for all channels with absence of indicators bacteria. Drying had a better inhibition on biofilm formation, SEM observation revealed a very low abundance of biofilms. Our study is the first in Algeria to describe microbiological findings of post-reprocessing-gastroscopes. Biofilms inside endoscope result in de-contamination failure. Rigorous cleaning/disinfection and drying with com-pressed air are essential elements that reduce the contamination level and biofilm formation inside endoscopes.
Protective effect beetroot Beta vulgaris extract against H2O2 Induced Oxidative stress in U87MG glioma cells
Authors: Gopalan Madhavan , Jadhav Anita S.
Published: May 2021

The study on neurodegenerative associated disorders is of immense clinical interest. Thus in the present investigation hydrogen peroxide was chosen as a precursor to induce oxidative cell damage in the cell cultures. The pigment extracted from red beetroot (Beta vulgaris) was analyzed by quantification of betalains by HPTLC, which revealed that the extract was made of two pig-ments, red and yellow. The red pigment was quantified which was 635ng/20μl (31.75mg/ml). The total phenolics and tannic in the extracts were reported to be 0.031μg/ml and 19.232mg/ml. 200μM of H2O2 was used for ROS production. MTT assay was performed showed the H2O2 treatment resulted in a decrease of cell viability percentage by 46.75 ± 0.018. While the beetroot extract at 10mg/ml increases the cell viability percentage to 55.58± 0.020 in 30min of pre-treatment, but no significant change was observed in post-treatment. Catalase value was highest at 20mg/ml of beet extract (4229.8864μmol of H2O2 consumed/min/mg protein). LDH value 531.67μM/ml in cell lysate, whereas in the LDH exudate highest value recorded was 646.25μM/ml, Catalase exudate activity were higher in both pre and post-treated cells, values were recorded as 4229.88μmol of H2O2 consumed/min/mg protein and 4048.09μmol of H2O2 consumed/min/mg protein respective-ly. Acetylcholine esterase (AChE) activity in post-treated cells was below the H2O2 treatment. In pre-treated cells, all the cells showed lower AChE specific activity in comparison to H2O2 treated cells. The present findings from our work exhibited the protective ability of the red beetroot (Beta vulgaris) against the oxidative stress induced by hydrogen peroxide.
DEVELOPMENT AND TESTING OF GLOW-IN-THE-DARK CONCRETE BASED RAISED PAVEMENT MARKER FOR IMPROVED TRAFFIC SAFETY
Authors: Saleem Muhammad , Hosoda Akira
Published: May 2021

Road infrastructure has witnessed incremental changes in the past as compared to the immense development witnessed by the vehicle’s safety technology. Bott’s dots and other reflector devices are extensively used on the road infrastructure for lane separation and for improving edge detection. These devices come in a large variety of shapes and sizes, however, all of them fall under the category of retroreflectivity since they depend on vehicle lights to provide reflection. Glow-in-the-dark (GiD) material has the benefit that it can store energy during the presence of light and can emit the stored energy in the form of visible light in the absence of an external light source. In this regard, the presented research work details the development and testing of GiD concrete based markers that can be used for lane separation and edge detection. The benefit of the presented innovation is that GiD concrete based markers can be used for visible light instead of retroreflectivity in addition to acting as a driver alertness tool. The durability performance of the presented innovative GiD based raised pavement markers has been presented along with cost comparison to traditional Bott’s dot. In addition, the presented prototype can be adopted for various architectural and esthetical applications in buildings, parks, walkways and bicycle lanes etc.
The Gas Content and Stripping of Local Group Dwarf Galaxies
Authors: Putman Mary E. , Zheng Yong , Price-Whelan Adrian M. , Grcevich Jana , Johnson Amalya C. , Tollerud Erik , Peek Joshua E. G.
Published: May 2021

The gas content of the complete compilation of Local Group dwarf galaxies (119 within 2 Mpc) is presented using H i survey data. Within the virial radius of the Milky Way (224 kpc here), 53 of 55 dwarf galaxies are devoid of gas to limits of M
H i
< 104
M
⊙. Within the virial radius of M31 (266 kpc), 27 of 30 dwarf galaxies are devoid of gas (with limits typically <105
M
⊙). Beyond the virial radii of the Milky Way and M31, the majority of the dwarf galaxies have detected H i gas and H i masses higher than the limits. When the relationship between gas content and distance is investigated using a Local Group virial radius, more of the nondetected dwarf galaxies are within this radius (85 ± 1 of the 93 nondetected dwarf galaxies) than within the virial radii of the Milky Way and M31. Using the Gaia proper-motion measurements available for 38 dwarf galaxies, the minimum gas density required to completely strip them of gas is calculated. Halo densities between 10−5 and 5 × 10−4 cm−3 are typically required for instantaneous stripping at perigalacticon. When compared to halo density with radius expectations from simulations and observations, 80% of the dwarf galaxies with proper motions are consistent with being stripped by ram pressure at Milky Way pericenter. The results suggest that a diffuse gaseous galactic halo medium is important in quenching dwarf galaxies, and that a Local Group medium also potentially plays a role.
Observational Signatures of Cosmic-Ray Interactions in Molecular Clouds
Authors: Owen Ellis R. , On Alvina Y. L. , Lai Shih-Ping , Wu Kinwah
Published: May 2021

We investigate ionization and heating of gas in the dense, shielded clumps/cores of molecular clouds bathed by an influx of energetic, charged cosmic rays (CRs). These molecular clouds have complex structures, with substantial variation in their physical properties over a wide range of length scales. The propagation and distribution of CRs is thus regulated accordingly, in particular, by the magnetic fields threaded through the clouds and into the dense regions within. We have found that a specific heating rate reaching 10−26 erg cm−3 s−1 can be sustained in the dense clumps/cores for Galactic environments, and this rate increases with CR energy density. The propagation of CRs and heating rates in some star-forming filaments identified in IC 5146 are calculated, with the CR diffusion coefficients in these structures determined from magnetic field fluctuations inferred from optical and near-infrared polarizations of starlight, which is presumably a magnetic field tracer. Our calculations indicate that CR heating can vary by nearly three orders of magnitude between different filaments within a cloud due to different levels of CR penetration. The CR ionization rate among these filaments is similar. The equilibrium temperature that could be maintained by CR heating alone is of order 1 K in a Galactic environment, but this value would be higher in strongly star-forming environments, thus causing an increase in the Jeans mass of their molecular clouds.
Thermonuclear 19F(p, α)16O Reaction Rate Revised and Astrophysical Implications
Authors: Zhang L. Y. , López A. Y. , Lugaro M. , He J. J. , Karakas A. I.
Published: May 2021

We have calculated the thermonuclear 19F(p, α

γ
)16O reaction rate in a wide temperature region of 0.001–10 GK by re-evaluating the available experimental data. Together with recently evaluated 19(p, α
0)16O and 19(p, α

π
)16O data, we have derived a new total reaction rate of 19F(p, α)16O using a Monte Carlo technique. The present rate is larger than the NACRE recommended one by factors of 36.4, 2.3, and 1.7 at temperatures of 0.01, 0.05, and 0.1 GK, respectively. This is because we have considered the enhanced low-energy astrophysical S factors in the (p, α

γ
) channel, owing to the interference effect between an 11 keV resonance and the well-known 323 keV resonance. It shows that the (p, α

γ
) channel dominates the total rate over the entire temperature region, except for a narrow region of 0.05–0.12 GK where the (p, α
0) channel dominates, contrary to the previous conclusion. We have investigated the impact of the 19F(p, α)16O reaction rate using a simple parametric model of extra mixing in low-mass AGB stars, which would lower the fluorine abundance produced and observed in these stars. However, models considering different temperature profiles and more sophisticated approaches, such as extra mixing induced by magnetic fields, are needed to verify the results of our preliminary tests. Interestingly, our new rate has a strong impact on destruction of 19F in the CNO cycle at low temperatures of 0.02–0.03 GK, and this general behavior needs to be analyzed further.
Competitive Dehydrogenation and Backbone Fragmentation of Superhydrogenated PAHs: A Laboratory Study
Authors: Stockett Mark H. , Avaldi Lorenzo , Bolognesi Paola , Bull James N. , Carlini Laura , Carrascosa Eduardo , Chiarinelli Jacopo , Richter Robert , Zettergren Henning
Published: May 2021

Superhydrogenated polycyclic aromatic hydrocarbons (PAHs) have been suggested to catalyze the formation of H2 in certain regions of space, but it remains unclear under which circumstances this mechanism is viable given the reduced carbon backbone stability of superhydrogenated PAHs. We report a laboratory study on the stability of the smallest pericondensed PAH, pyrene (C16H10+N
, with N = 4, 6, and 16 additional H atoms), against photodestruction by single vacuum ultraviolet photons using the photoelectron–photoion coincidence technique. For N = 4, we observe a protective effect of hydrogenation against the loss of native hydrogens, in the form of an increase in the appearance energies of the

and C16H8
+ daughter ions compared to those reported for pristine pyrene (C16H10). No such effect is seen for N = 6 or 16, where the weakening effect of replacing aromatic bonds with aliphatic ones outweighs the buffering effect of the additional hydrogen atoms. The onset of fragmentation occurs at similar internal energies for N = 4 and 6, but is significantly lower for N = 16. In all three cases, H-loss and C
m
H
n
-loss (m ≥ 1, carbon backbone fragmentation) channels open at approximately the same energy. The branching fractions of the primary channels favor H-loss for N = 4, C
m
H
n
-loss for N = 16, and are roughly equal for the intermediate N = 6. We conclude that superhydrogenated pyrene is probably too small to support catalytic H2-formation, while trends in the current and previously reported data suggest that larger PAHs may serve as catalysts up to a certain level of hydrogenation.
Black Hole Mass Function of Coalescing Binary Black Hole Systems: Is there a Pulsational Pair-instability Mass Cutoff?
Authors: Wang Yuan-Zhu , Tang Shao-Peng , Liang Yun-Feng , Han Ming-Zhe , Li Xiang , Jin Zhi-Ping , Fan Yi-Zhong , Wei Da-Ming
Published: May 2021

We analyze the LIGO/Virgo GWTC-2 catalog to study the primary mass distribution of the merging black holes. We perform hierarchical Bayesian analysis and examine whether the mass distribution has a sharp cutoff for primary black hole masses below 65 M
⊙, as predicted in the pulsational pair-instability supernova model. We construct two empirical mass functions. One is a piece-wise function with two power-law segments joined by a sudden drop. The other consists of a main-truncated power-law component, a Gaussian component, and a third very massive component. Both models can reasonably fit the data and a sharp drop of the mass distribution is found at ∼50M
⊙, suggesting that the majority of the observed black holes can be explained by the stellar evolution scenarios in which the pulsational pair-instability process takes place. On the other hand, the very massive subpopulation, which accounts for at most several percent of the total, may be formed through hierarchical mergers or other processes.
Le chevalier Dupin comme métaphore d’une Open Source Intelligence (OSINT) lucide
Authors: Le Deuff Olivier
Published: May 2021

Bref détour par la littérature policière pour trouver dans les méthodes et les analyses du fameux personnage d’Edgar Allan Poe , le chevalier Dupin, des qualités propres à l’univers de l’OSINT, qui repose sur des mécanismes d’intelligence toute particulière.
My web intelligence : un outil pour l’analyse du web et des réseaux
Authors: Lakel Amar
Published: May 2021

L’analyse des sources ouvertes nécessite des outils qui soient capables d’effectuer des crawls de sites web pour mieux les catégoriser et faciliter leurs analyses sous des formes notamment cartographiques. Basé sur l’analyse des communautés en ligne et des controverses, My Web Intelligence est un outil pour les digital studies dont l’intérêt dépasse les seuls intérêts de la recherche pour faciliter l’étude et l’analyse des réseaux d’influence et des stratégies de viralité de l’information.
La fonction documentaire dans un État « moderne »
Authors: Baude Catherine , Krumnow Marie Pascale
Published: May 2021

Cet article a pour objet de mettre en lumière les conditions du développement des préoccupations documentaires de l’administration après-guerre, en se focalisant sur deux acteurs majeurs de cette évolution : la Commission de coordination de la documentation administrative (CCDA) et l’Association professionnelle des documentalistes (ADBS). Il tente d’éclairer les logiques de coordination interministérielle et de mutualisation mises en œuvre par les pouvoirs publics pour développer la technicité de la fonction documentaire dans les services et qui rendront possible ultérieurement la mise en place d’un statut interministériel des documentalistes. Il fait suite à l’article de Catherine Baude détaillant les actions menées pendant plus de quarante ans par l’ADBS pour améliorer le statut des personnels de documentation dans la Fonction publique d’État. S’appuyant sur ce premier récit de l’action d’une association professionnelle, les auteures ont cherché à retracer, sur un temps long, l’émergence et l’évolution de la fonction documentaire dans l’administration.