bluuebunny/crossref_metadata_2025 huggingface dataset:
The inverse maximum flow problem under Lk norms
Authors:   UNIVERSITY TRANSILVANIA OF BRASOV DEPARTMENT OF COMPUTER SCIENCE IULIU MANIU 50, BRASOV, ROMANIA E-mail address: a.deaconu@unitbv.ro, DEACONU ADRIAN , CIUREA ELEONOR ,   UNIVERSITY TRANSILVANIA OF BRASOV DEPARTMENT OF COMPUTER SCIENCE IULIU MANIU 50, BRASOV, ROMANIA E-mail address: e.ciurea@unitbv.ro
Published: May 2021

The problem consists in modifying the lower and upper bounds of a given feasible flow f in a network G so that the given flow becomes a maximum flow in G and the distance between the initial vector of bounds and the modified one measured using Lk norm (k ∈ N∗) is minimum. A fast apriori fesibility test is presented. An algorithm for solving this problem is deduced. Strongly and weakly polynomial time implementations of this algorithm are presented. Some particular cases of the problem are discussed.
On the η − (1, 2) approximated optimization problems
Authors:   FACULTY OF MATHEMATICS AND COMPUTER SCIENCE BABES-BOLYAI UNIVERSITY M. KOGALNICEANU 1 400084 CLUJ-NAPOCA, ROMANIA E-mail address: horatiuboncea@yahoo.com, horatiu.boncea@ubbcluj.ro, BONCEA HORATIU VASILE , DUCA DOREL I. ,   FACULTY OF MATHEMATICS AND COMPUTER SCIENCE BABES-BOLYAI UNIVERSITY M. KOGALNICEANU 1 400084 CLUJ-NAPOCA, ROMANIA  E-mail address: dorelduca@yahoo.com, dduca@math.ubbcluj.ro
Published: May 2021

Let X be a nonempty subset of Rn, x 0 be an interior point of X, f : X → R be a differentiable function at x 0 , g : X → Rm be a twice differentiable function at x 0 and η : X × X → Rn be a function. In this paper, we attach to the optimization problem ... the (1, 2)-η- approximated optimization problem ... and we will study the relations between the optimal solutions of Problem (P), the optimal solutions of Problem (AP), the saddle points of Problem (P) and saddle points of Problem (AP).
Experience with the use of siltuximab in patients with SARS-CoV-2 infection
Authors: Meira Fernanda , Albiach Laia , Carbonell Cristina , Martín-Oterino José-Ángel , Martín-Ordiales Mercedes , Linares Laura , Macaya Irene , Agüero Daiana , Ambrosioni Juan , Bodro Marta , Cardozo Celia , Chumbita Mariana , De la Mora Lorena , García-Pouton Nicole , Garcia-Vidal Carolina , González-Cordón Ana , Hernández-Meneses Marta , Inciarte Alexy , Laguno Montserrat , Leal Lorna , Morata Laura , Puerta-Alcalde Pedro , Rico Verónica , Letona Laura , Cózar-Llistó Alberto , Dueñas Gerard , Solá Montserrat , Torres Berta , Rojas Jhon , Moreno Antonio , Moreno-García Estela , Torres Manuel , Martínez José A , Soriano Alex , García Felipe ,   Department of Infectious Diseases, Hospital Clinic of Barcelona, Barcelona, Spain
Published: May 2021

Objectives. The study aims to describe characteristics and clinical outcome of patients with SARS-CoV-2 infection that received siltuximab according to a protocol that aimed to early block the activity of IL-6 to avoid the progression of the inflammatory flare. Patients and methods. Retrospective review of the first 31 patients with SARS-CoV-2 treated with siltuximab, in Hospital Clinic of Barcelona or Hospital Universitario Salamanca, from March to April 2020 with positive polymerase-chain reaction (PCR) from a nasopharyngeal swab. Results. The cohort included 31 cases that received siltuximab with a median (IQR) age of 62 (56-71) and 71% were males. The most frequent comorbidity was hypertension (48%). The median dose of siltuximab was 800 mg ranging between 785 and 900 mg. 7 patients received siltuximab as a salvage therapy after one dose of tocilizumab. At the end of the study, a total of 26 (83.9) patients had been discharged alive and the mortality rate was 16.1% but only 1 out of 24 that received siltuximab as a first line option (4%). Conclusions. Siltuximab is a well-tolerated alternative to tocilizumab when administered as a first line option in patients with COVID-19 pneumonia within the first 10 days from symptoms onset and high C-reactive protein.
Authentic Restaurants and Food Tourism: Food Tourists Versus General Tourists
Authors: Levitt Jamie A. , DiPietro Robin B.
Published: May 2021

The current study assessed the influence of restaurant authenticity on tourists and whether this influence differs between general and food tourists. Responses from 575 tourists were collected from six restaurants. A Mehrabian–Russell-based model was tested using SmartPLS 3.0.
Findings showed that restaurant authenticity directly positively influenced tourists' satisfaction and indirectly positively influenced place attachment and restaurant loyalty. Yet, a multigroup analysis found no significant differences in restaurant authenticity's influence on general and
food tourists. There are both theoretical and practical implications from the current study. Regarding theory, findings from the conceptual model imply that restaurant authenticity plays an important role in indirectly forging consumers' restaurant loyalty and place attachment. From a practical
standpoint, since the multigroup analysis found no significant differences, destinations may want to consider developing marketing campaigns that appeal to both food tourists and general tourists.
Pennsylvania
Authors: Reer Michael K. , Antonette Valerie
Published: May 2021

According to the U.S. Energy Information Administration, Pennsylvania ranked second among states in production of natural gas in 2018, contributing nearly seven trillion cubic feet. Although the number of unconventional permit applications received by the Pennsylvania Department of Environmental Protection (“PADEP”) remains relatively robust, the number of unconventional well applications continues to decline from the peak of 3,182 received in 2014.3 In 2019, PADEP received 1,475 unconventional permit applications, as compared to 1,868 in 2018 and 2,028 in 2017.
West Virginia
Authors: Reer Michael K. , Antonette Valerie
Published: May 2021

West Virginia is one of the most prolific energy-producing states in the country. According to the U.S. Energy Information Administration, West Virginia ranked seventh among states in production of natural gas in 2018, contributing 1.8 trillion cubic feet. Further, the consistency in permit application appears to support the proposition that West Virginia operators will continue producing significant volumes well in the future. The West Virginia Department of Environmental Protection (“WVDEP”) issued 582 horizontal well permits in 2015, 223 in 2016, 509 in 2017, 433 in 2018, and 467 in 2019.
Oklahoma Renewable Energy Policy Encounters a COVID Roadblock
Authors: Bowman Warigia M. , Firestone Debbie
Published: May 2021

On the road to energy security, independence, and success, this past year Oklahoma has seen “construction” projects in the works. Renewable energy, however, hit a major roadblock in the form of the COVID-19 pandemic. Historically, Oklahoma produced most of its electricity through coal and natural gas. In the past decade, renewable sources like wind and solar energy represent a growing segment of electricity generation in the state. In 2019 and 2020, Oklahoma developed a stronger renewable energy policy by enacting legislation, passing administrative decisions, and passing local city ordinances.
Development Of The Ability To See And Represent The Form Remotely In The Process Of Teaching Students To Portray A Creature In Higher Pedagogical Education
Authors:   Professor, Chirchik State Pedagogical Institute, Uzbekistan, Baymetov Botir Boltabaevich
Published: May 2021

The article introduces students to the method of using the theoretical laws of the visual arts to create works of art, students were provided with information on the formation of the ability to see and describe the shape of the body at a distance, history, theory, methodology of fine arts and the ancient stages of its development.
Substantiation Of The Operating Mode Of The Pendulum Feeder
Authors:   Doctor Of Technical Sciences, Associate Professor Tashkent Institute Of Irrigation And Agricultural Mechanization Engineers, Uzbekistan, Dulliyevich Astanakulov Komil , Kulmamatovich Kurbanov Fazliddin ,   Assistant, Tashkent State Agrarian University, Uzbekistan, Jazilbaevna Isakova Farida ,   Assistant, Tashkent State Agrarian University, Uzbekistan
Published: May 2021

Today, auto-feeding is the most effective way of feeding and it is less time consuming because feeding fish is a mandatory process in all enterprises, engaged in fish farming.
Increasing The Effective Use Of Human Capital In The Digital Economy
Authors:   Phd In Economics, Associate Professor, Chief Researcher At The Institute For Forecasting And Macroeconomic Research Under The Ministry Of Economic Development And Poverty Reduction, Uzbekistan, Alimova Guzal Abdukhakimovna
Published: May 2021

A person and his abilities, knowledge, skills have become a key factor in the prosperity of any society and the economic development of the state. Therefore, this article is devoted to the study of the essence of "human capital", which is an important factor in the development of society in the digital economy, and ways to improve the mechanism for its effective use.
Influence Of The Ecological Disaster Of The Aral Sea On The Ecological And Social Feeling Of The Population
Authors:   2nd Year Student Of The Magistracy Of The North Caucasus Federal University, Uzbekistan, Ibodulla Ugli Eshmurodov Nabillo
Published: May 2021

This article examines the approaches of social ecology to the consideration of problems, as well as the application of one of them in the analysis of the social and environmental consequences of the ecological catastrophe of the Aral Sea.
Testing And Determining The Temperature Characteristics Of Heat Pipes (HP)
Authors:   Bukhara Engineering Technological Institute, Bukhara, Uzbekistan, Kholikov A.A. , Quldosheva F.S. ,   Bukhara Engineering Technological Institute, Bukhara, Uzbekistan
Published: May 2021

The article describes the tests and determination of the temperature characteristics of highly efficient heat transfer units (heat pipes (HP)), which can be used in heat and mass transfer devices, for example, in the process of drying vegetables and fruits. To test and determine the temperature characteristics of HP, a test setup for medium-temperature HP was created and a number of tests were carried out to determine how the dependence of the temperature change of the condenser and the HP evaporator at various angles of inclination, the working fluid, body material, HP wick material was selected, the influence of the number of mesh wick and influence of pressure. All characteristics are presented in graphs and tables.
Ecological Grouping Of Phytonematodes Of Pomegranate Agrocenoses Of The Surkhandarya Region Of Uzbekistan
Authors:   Doctor Of Philosophy In Biology (Phd), Senior Lecturer, Department Of Zoology, Termez Staty University, Termez, Uzbekistan, Bekmurodov Abdujabbor Sattorovich , Raxmatova Masuma Umarovna ,   Senior Lecturer, Department Of Zoology, Termez Staty University, Termez, Uzbekistan
Published: May 2021

The article provides data on the ecological grouping of detected phytonematodes on pomegranate agrocenoses of the Surkhandarya region of Uzbekistan. The study revealed 98 species of phytonematodes belonging to 5 ecological groups: pararisobionts-20 species, devisaprobionts-23, eusaprobionts-4, phytohelminths of nonspecific pathogenic effect-34 and phytohelminths of specific pathogenic effect-17.
Studying Molecular Physics
Authors:   Senior Lecturer Of Bukhara State Medical Institute, Uzbekistan, Xayrullaevna Safarova Rahima
Published: May 2021

The article discusses the effective teaching of molecular physics, the study using modern pedagogical tools of the effective application of molecular physics in practice. The article will be useful for physicists, teachers and students.
Fergana Valley Architectural School Decoration Methods
Authors:   Professor, Tashkent Architecture Institute, Toshkent, Uzbekistan, Muslimovich Arifjan Salimov , Arabdjon ogli Abdurakhmanov Ulugbek ,   Doctorant, The Department of construction of buildings and structures, Fergana Polytechnic Institute, Ferghana, Uzbekistan, Raufjonovna Tursunova Dilnoza ,   Doctorant, The Department of Architecture, Fergana Polytechnic Institute, Fergana, Uzbekistan
Published: May 2021

Thanks to independence, attention is paid to restoring historical memory, perpetuating the memory of those who fought for independence, revealing historical justice associated with the fate of our country, revealing the recent black pages of our people and nation, drawing conclusions from this history.It is a duty and duty to perpetuate the memory of the innocent victims.
Analysis And Directions Of Development Of The Practice Of Attracting Capital From The Financial Market Of Joint-Stock Companies. Evidence From Uzbekistan
Authors:   Professor, Department Of Corporate Finance And Securities, Tashkent Institute Of Finance, Tashkent, Uzbekistan, Tashmuradova Buvsara , Hamdamov Omonullo ,   PhD, Department Of Corporate Finance And Securities, Tashkent Institute Of Finance, Tashkent, Uzbekistan
Published: May 2021

The paper describes the economic importance of attracting financial resources from the national and international financial markets by joint stock companies operating in the Republic of Uzbekistan. The current situation with the attraction of capital from the international financial markets by companies in the financial sector has been analyzed and key conclusions have been drawn. In national practice, the existing shortcomings in the financing of companies on the basis of debt instruments have been studied and scientific proposals have been developed to address them.
Using Model Of Intellegent Jadids In The Propoganda Of Education And Enlightenment
Authors:   Head Of The Master's Department Of Fergana State University, Deputy Of Fergana City Council, Uzbekistan, Mahmudovna Sabirova Zilolaxon
Published: May 2021

The article puts forward ideas in an intensive pilgrimage work, and now they support the use of ideas in education and enlightenment. They also covered the political activities of the jadids.
Analysis Of Constructions And Building Materials Of Architectural Monuments Of Khiva
Authors:   Khorezm Mamun Academy, regional branch of Academy of Sciences of the Republic of Uzbekistan, Markaz-1, Khiva city, Republic of Uzbekistan, G. Durdieva , A. Zargarov ,   Khorezm Mamun Academy, regional branch of Academy of Sciences of the Republic of Uzbekistan, Markaz-1, Khiva city, Republic of Uzbekistan, E. Salaev ,   Khorezm Mamun Academy, regional branch of Academy of Sciences of the Republic of Uzbekistan, Markaz-1, Khiva city, Republic of Uzbekistan, K. Saburov ,   Khorezm Mamun Academy, regional branch of Academy of Sciences of the Republic of Uzbekistan, Markaz-1, Khiva city, Republic of Uzbekistan, B. Khudayberganov ,   Khorezm Mamun Academy, regional branch of Academy of Sciences of the Republic of Uzbekistan, Markaz-1, Khiva city, Republic of Uzbekistan, I. Rustamov ,   Khorezm Mamun Academy, regional branch of Academy of Sciences of the Republic of Uzbekistan, Markaz-1, Khiva city, Republic of Uzbekistan
Published: May 2021

In this article, the methods of construction of minarets of Khiva, architectural composition, building materials, history of construction, devices of aboveground and underground parts, which are of special importance in the ancient Khorezm architecture, are described in scientific sequence and in-depth analysis for the first time. Much of this information is being inserted into scientific circulation for the first time.
Development Of Monologue And Dialogical Speech Of Students Of Technical Universities
Authors:   Teacher, Tashkent State Transport University, Uzbekistan, Xasanova Vazira Xamidjanovna
Published: May 2021

This artcle deals with Development of monologue and dialogical speech of students of technical universities. The modern stage of development of the educational process has changed the requirements for the professional training of students. The changes are associated with the development of special disciplines and with the increased role of the Russian language in the conditions of improving the preparation of each student, as this is the key to future success and professionalism.
Transformation Of Scientific And Religious Values The Necessity Of Educating An Enlightened Generation Through
Authors:   Candidate Of Philosophical Sciences, Associate Professor Of Fergana State University, Uzbekistan, Axadjonovich Qambarov Abdumutal
Published: May 2021

The article elaborates on the fact that the upbringing of an enlightened generation through the transformation of scientific and religious values is one of the most pressing issues today. At the same time, the need to create an environment of freedom and competition in the education system is analyzed in order to show the value of science in society and the role of scientific values in social development. It also shows the factors that determine the basic structure of spiritual, moral and axiological values necessary for the upbringing of an enlightened generation.
Commonness And Danger Variables Of Smoking Among Secondary School Female Understudies In Arar
Authors:   Family And Community Medicine Dept., Alfaisal University, Saudi Arabia, Nourah Abdulaziz Alfayez
Published: May 2021

Smoking is the main worldwide reason for preventable passings. Studies have demonstrated that smoking commencement during youth improves the probability of kept smoking during adulthood and diminishes the opportunity of stopping. Numerous past explores have been directed in various districts of Saudi Arabia to recognize the pervasiveness of smoking among guys; barely any examinations remembered females for various territory however no investigations have been led among female at northern line of KSA. This examination meant to deciding the commonness of smoking and distinguish hazard factors among secondary school female understudies in Arar, KSA 2018.
Mutual Influence between Different Views of Probability and Statistical Inference
Authors: Borovcnik Manfred
Published: May 2021

In this paper, we analyse the various meanings of probability and its different applications, and we focus especially on the classical, the frequentist, and the subjectivist view. We describe the different problems of how probability can be measured in each of the approaches, and how each of them can be well justified by a mathematical theory. We analyse the foundations of probability, where the scientific analysis of the theory that allows for a frequentist interpretation leads to unsolvable problems. Kolmogorov’s axiomatic theory does not suffice to establish statistical inference without further definitions and principles. Finally, we show how statistical inference essentially determines the meaning of probability and a shift emerges from purely objectivist views to a complementary conception of probability with frequentist and subjectivist constituents. For didactical purpose, the result of the present analyses explains basic problems of teaching, originating from a biased focus on frequentist aspects of probability. It also indicates a high priority for the design of suitable learning paths to a complementary conception of probability. In the applications, modellers use information in a pragmatic way processing this information regardless of its connotation into formal mathematical models, which are always thought as essentially wrong but useful.
Articulando Combinatória e Probabilidade: Jovens e Adultos Revisitando Problemas Combinatórios via Construção de Espaços Amostrais
Authors: Tenorio de Lima Ewellen , De Souza Rosa Borba Rute Elizabete
Published: May 2021

O presente artigo discute contribuições que a articulação entre combinatória e probabilidade baseada na construção de espaços amostrais pode trazer para o desempenho na resolução de problemas combinatórios variados (arranjo, combinação, permutação e produto cartesiano). Os dados da pesquisa foram coletados junto a 24 estudantes brasileiros, concluintes de diferentes etapas da escolarização básica na modalidade de ensino denominada Educação de Jovens e Adultos. Corroborando achados de estudos anteriores, o problema de produto cartesiano foi aquele no qual os melhores desempenhos foram observados, enquanto o de combinação foi aquele no qual os desempenhos mais fracos foram obtidos pelos participantes. A revisitação aos problemas propostos, nos dois tipos de teste utilizados, consistiu em um rico momento de descoberta de novas possibilidades e/ou análise daquelas já indicadas. Tal articulação, pautada em revisitações, proporcionou, ainda, uma oportunidade de reflexões acerca das relações de ordem e de escolha que caracterizam cada uma das situações combinatórias exploradas nos problemas. Estes resultados dão indícios da potencialidade de um trabalho articulado entre combinatória e probabilidade para o desenvolvimento de ambos os raciocínios.
MOVIMIENTO NACIONAL DE POLÍTICAS PÚBLICAS DE EDUCACIÓN DOCENTE: LOS CASOS DE BRASIL Y URUGUAY
Authors: Araújo Regina Magna Bonifácio de , Zidan Eduardo Rodriguez
Published: May 2021

Este artículo tiene como objetivo presentar políticas públicas para la formación del profesorado de Educación Básica en Brasil y Uruguay, destacando el movimiento de cada conjunto legislativo, su institución y su alcance. Guiado por la comprensión de la complejidad existente en la realidad de cada país, el texto aborda el tema de la capacitación, los desafíos existentes y los avances logrados en cada contexto educativo.
Local Wisdom and Social Change (Roland Barthes' Semiotic Analysis in Advertisement "The Light of Aceh")
Authors: Siregar Rafiqah Yusna
Published: May 2021

This research focuses on answering how Acehnese local wisdom is represented and sees social changes in the community through advertising media. Using Roland Barthes' semiotic analysis to find the meaning of denotation, connotation, and myths in TV commercial "The Light of Aceh", this research employs the constructivism paradigm with qualitative methods. The denotation falls in several objects, such as a traditional house Rumoh Aceh as a place for Acehnese people to live, the customs to honor guests and eat together with them as a symbol of friendship between communities, and the Pacu Kude tradition. The connotation of the local wisdom object has been cultured and become the community's identity, then displayed in the advertisement as the result of the construction of the existing reality. This construction is interpreted as a myth that does not necessarily refer to mythology in the ordinary sense. It is traditional stories, legends, et cetera, but rather an explanation of messages with a connotative dimension. The myths found in the advertisements show the social changes taking place in Acehnese society.

 

Fokus penelitian ini adalah menjawab bagaimana kearifan lokal Aceh direpresentasikan dan melihat perubahan sosial yang terjadi di masyarakat melalui media iklan. Dengan menggunakan analisis semiotik Roland Barthes untuk menemukan makna denotasi, konotasi, dan mitos dalam iklan TV “The Light of Aceh”, penelitian ini menggunakan paradigma konstruktivisme dengan metode kualitatif. Makna denotasi terdapat pada beberapa objek, seperti rumah adat Rumoh Aceh sebagai tempat tinggal masyarakat Aceh, adat istiadat untuk menghormati tamu dan makan bersama sebagai simbol persahabatan antar masyarakat, serta tradisi Pacu Kude. Objek kearifan local yang berkonotasi telah membudaya dan menjadi identitas masyarakat, kemudian ditampilkan dalam iklan tersebut sebagai hasil konstruksi dari realitas yang ada. Konstruksi ini dimaknai sebagai mitos yang tidak serta merta mengacu pada mitologi dalam pengertian biasa. Ini adalah cerita tradisional, legenda, dan sebagainya, tetapi lebih merupakan penjelasan tentang pesan dengan dimensi konotatif. Mitos yang ditemukan dalam iklan tersebut menunjukkan perubahan sosial yang terjadi pada masyarakat Aceh.
Magnetic Nanoparticles In Hyperthermia Therapy: A Mini-Review
Authors: Mostafa Yusefi  , Kamyar Shameli  , Siti Nur Amalina Mohamad Sukri
Published: May 2021

The activation of MNPs for hyperthermia therapy via an external alternating magnetic field is an interesting method in targeted cancer therapy. This mini-review explains new developments and implications of magnetic nanofluids mediated magnetic hyperthermia for their potential use in future clinical settings. The external alternating magnetic field generates heat in the tumor area to eliminate cancer cells. Depending on the tumor type and targeted area, several kinds of MNPs with different coating agents of various morphology and surface charge have been developed. The tunable physiochemical characteristics of MNPs enhance their heating capability. In addition, heating efficiency is strongly associated with the amount of the applied magnetic field and frequency. The great efforts have offered promising preclinical trials of magnetic hyperthermia via MNPs as a smart nanoagent. MNPs are very appropriate to be considered as a heating source in MHT and prospective research in this field will lead to tackle the problems from chemotherapy and introduce promising therapeutic techniques and nanodrug formulations for remotely controlled drug release and anticancer effects. This mini-review aims to pinpoint synthesis and structural analysis of various magnetic nanoparticles examined for magnetic hyperthermia therapy and controlled drug release in cancer treatment.
O Papel da educação no desenvolvimento como liberdade : uma análise comparada de Finlândia e Coreia do Sul
Authors: Waltenberg Fábio Domingues , Martins Fernanda Scarparo
Published: May 2021

Adotando como referência a abordagem de desenvolvimento como liberdade, de Amartya Sen, comparam-se Finlândia e Coreia do Sul, dois países que priorizaram investimentos em educação ao longo de décadas, período que coincidiu com um grande salto em seu nível de desenvolvimento. Embora ambos os países tenham sido capazes de erguer sistemas de educação considerados de alto padrão, apoiaram-se em princípios absolutamente diferentes para atingi-los. Analisam-se as motivações para os maciços investimentos educacionais na Coreia do Sul e na Finlândia e se apresenta a configuração atual dos seus sistemas educacionais, com alguns elementos de sua evolução histórica. Procura-se, então, avaliar em que medida os sistemas educacionais desencadeiam consequências mais amplas do que resultados em provas de proficiência – efeitos desejáveis ou não dentro da perspectiva de desenvolvimento adotada. Para isto, recorre-se a indicadores de qualidade de vida dos alunos, extraídos da edição de 2015 do Programa Internacional de Avaliação de Alunos (em inglês, Programme for International Student Assessment – Pisa), bem como àqueles de percepção de qualidade da sociedade, oriundos do Programa para Avaliação Internacional de Competências de Adultos (em inglês, Programme for the International Assessment of Adult Competencies – PIAAC), de 2011-2012. Conclui-se que o sistema educacional finlandês está mais afinado ao conceito de desenvolvimento como liberdade.
Double Box Motive
Authors:   The University of Chicago, USA, Bloch Spencer
Published: May 2021

The motive associated to the second Symanzik polynomial of the double-box two-loop Feynman graph with generic masses and momenta is shown to be an elliptic curve.
Myrmecotypus mazaxoides sp. nov. – a new ground-dwelling, carpenter ant-resembling sac spider species from the Bolivian orocline, with indirect evidence for species-specific mimicry (Araneae, Corinnidae, Castianeirinae)
Authors: Perger Robert , Dupérré Nadine
Published: May 2021

A new ant-resembling spider species of the subfamily Castianeirinae, Myrmecotypus mazaxoidessp. nov., from the Sub-Andean area of the Bolivian orocline is described. Adults of M. mazaxoidessp. nov. resemble the carpenter ant Camponotus cf. melanoticus Emery, 1894 and were observed on the ground of savanna-like habitats close to the entrances of formicaries of this ant. This study is the first to report a ground-dwelling species of Myrmecotypus O. Pickard-Cambridge, 1894; all the other species are arboreal.
Engineering instructor perception of problem- and project- based learning: Learning, success factors and difficulties
Authors: Garmendia Mikel , Aginako Zaloa , Garikano Xabier , Solaberrieta Eneko
Published: May 2021

This work considers three research objectives: to analyze the perception of instructors of the incidence of PBL/PrBL on content learning and skill development; to identify the success factors that they believe promote learning when using them, as well as their importance; and to identify the difficulties they face, and the frequency with which they occur. The responses to a questionnaire administered to 50 instructors who participated in a specific training program were analyzed. The results show that the instructors’ perception is that both models contribute to a better understanding of the contents with regard to their practical application, and to a high level of skill development in their students, with the most favored being group work, decision-making, autonomous learning and problem solving. The instructors consider important success factors to be student involvement in their own learning from the very beginning, feedback from the professor, the tasks having been well-designed and team work and cooperation among students. The most common difficulties identified in our study correspond to the excessive workload associated with monitoring the students, and managing and developing within the established time the planning of their tasks and activities, although there is a medium level of incidence in this regard, and it may be due to the characteristics of the training program received. Exploring these aspects in greater depth in future investigations could facilitate the development of more effective teaching practices.
Observaciones en torno al área dialectal leonesa: sobre viejos límites eclesiásticos y lingüísticos
Authors: Alonso Pascua Borja
Published: May 2021

Este artículo examina una propuesta según la cual la expansión del dialecto leonés y de sus variedades internas constituye un reflejo aproximado de las antiguas fronteras diocesanas de la península ibérica. El objetivo es observar en qué medida las isoglosas lingüísticas se ajustan con mayor fidelidad a las fronteras eclesiásticas que a las civiles, ya sean las del antiguo reino de León o las de la actual división provincial. El examen comparado de ambos límites revela, en efecto, correspondencias que apuntan al papel determinante de las viejas diócesis en la configuración lingüística del territorio
A volatilidade idiossincrática melhora a explicação dos retornos precificáveis?
Authors: Conte Bruno Pereira , Ceretta Paulo Sérgio
Published: May 2021

O objetivo desse trabalho foi de investigar se a volatilidade idiossincrática poderia ter capacidade de aprimorar a explicação dos retornos precificáveis. Para tal, fez-se uso do modelo CAPM de Fama & French e, baseado em trabalhos como os de Ang et al. (2006) e Leite et al. (2016), incluiu-se o fator volatilidade. A diferença desse trabalho está na inclusão da volatilidade da carteira bem como no cálculo dessa que foi obtida fazendo uso do modelo GJR-GARCH. O escopo de estudo foi o mercado brasileiro de capitais, entre o período de 2007 e 2017. Os resultados empíricos mostraram que a inclusão da volatilidade aprimora a explicação do modelo CAPM Fama & French, fato evidenciado pelo sensível acréscimo do R² ajustado das regressões. Além disso, notou-se que a volatilidade, quando significativa, teve relação oposta com o retorno. Quando comparadas, notou-se que a volatilidade idiossincrática explicou mais os retornos quando comparada com a volatilidade de mercado, o que indica que as informações da montagem de portfólios e suas oscilações de retornos individuais parecem ser mais importantes que o movimento do mercado como um todo, um resultado que se torna relevante tanto para hedge quanto para a busca de maximização de retornos pelos investidores.
Executive Compensation and Performance of Companies in the Brazilian Capital Market: Evidence of Negative Relationship with Focus on the Interests of the Controlling Shareholder
Authors: Oliveira Isaac Gezer Silva de , Silva Junior Annor da
Published: May 2021

This study aims to analyze the relationship between executive compensation and performance in public companies listed on the Brazilian capital market – [B]3 Brasil Bolsa Balcão. Theoretically, the study is based on the agency theory focusing on the principal-principal perspective of agency conflict. The sample comprised the 100 companies with the highest liquidity in the trading of shares listed on the [B]3 during the 2010-2015 period, totaling 488 observations. Six hypotheses were developed, and several variables were measured to test the relationship between executive compensation and performance. For the selected sample, the results of the estimated econometric models indicate that executive compensation has a negative relationship with variables performance, presence of family on the board of directors, voting rights shares, and the duality of two share classes, voting and non-voting. The results also indicate a negative relationship between ownership concentration and performance and a nonsignificant relationship between executive compensation and family control. The synthesis of the results indicates that the corporate governance model adopted by Brazilian public companies prioritizes the interests of the controlling shareholder instead of executive compensation.
Fostering Student Engagement Through Showing Empathy and Caring in an Online College Course
Authors: Horner Sherri L. , Mereoiu Mariana , Mrachko Alicia A.
Published: May 2021

This chapter describes a collaborative action research project in which one post-secondary instructor used the experiences in her undergraduate teacher education course to learn how to best support students and peers in a health crisis and social justice uncertainty climate. The authors used empathy and care theories and universal design for learning (UDL) to plan, implement, and reflect on ways to empathize and show care for students in a course that was online due to COVID-19. Using the action research processes, the authors found five themes related to using UDL practices and showing empathy and caring. They conclude with recommendations for other instructors interested in supporting their students in online classes and in times of crisis.
Influence of Manganese Oxide on the Sintering Properties of Ceria-Stabilized Tetragonal Zirconia
Authors: Soosai Ananthan , Muniandy Suresh , Loong Teow Hsien
Published: May 2021

Ceria stabilized zirconia with critical grain size is found to exhibit higher strength and higher resistance towards low temperature moisture degradation, The mechanical properties are greatly influenced by the size of the tetragonal grains. The effectiveness of doping with MnO2 (0.2 to wt %) in retarding degradation mechanical properties of ceria stabilized tetragonal zirconia (Ce-ZrO2) was evaluated by pressureless sintering within a temperature range from 1250°C-1550°C. Impact of manganese oxide to the mechanical properties and ageing resistance to the Ce-ZrO2 is truly beneficial. 0.4 wt% MnO2 at 1450°C revealed that, the tetragonal grain size was not affected by dopant level.With optimum dopant the 3 mol% ceria (3Ce-ZrO2) ceramic demonstarted the Vicker hardness of 11.8 GPa , fracture toughnessof 10.0 MPam1/2, flexural strength 920 MPa and Young modulus of 210 GPa. The 3Ce-ZrO2 doped with 0.4wt% MnO2 sintered 1450°C could be the best building block for biomedical applications.
Fluid Intake Capacity of Aloe Vera and Sea Cucumber Thin Film
Authors: Jajah Anastasia , Yusof Mahshuri
Published: May 2021

Aloe Vera and sea cucumber are the natural material which has been used widely in bio-medical field in Malaysia, especially for wound healing purposes due to its therapeutic effects. Recently, thin films which can absorb acceptable amount of fluid has been gaining attentions in biomaterial wound dressing applications. Hence, the incorporation of these natural materials in the fabrication of the thin films were investigated regarding the fluid intake capacity under the condition of being in contact with deionized water and pseudo-wound exudate. Three types of films made of different compositions of Aloe Vera and sea cucumber were prepared and evaluated. The morphology of the films was analysed using the Scanning Electron Microscopy (SEM) evaluation and the fluid intake capacity through the Free Swell Absorptive Capacity test. Results showed the variety of fluid intake capacity of different type of the film after being immersed in both solutions. The morphological structure of each film also varied from one another. The result also indicated that the Aloe Vera film held the adequate fluid intake capacity without any degradation behaviour.
Treatment on Coconut Shell to Improve its Quality for Use as Coarse Aggregate
Authors: Thilagashanthi T. , Gunasekaran K. , Satyanarayanan K.S.
Published: May 2021

To improve the quality of coconut shell (CS) to use as coarse aggregate different treatment methods are given to CS. Polyvinyl alcohol (PVA) and ferrous sulphate (FS) were used as materials for treating the CS. Ten different types of treatments were considered from raw CS to treat with PVA and FS. Significant reduction of water absorbing quality on CS was found from the different types of treatment given. Scanning electron microscopic (SEM) images were also taken and analyzed. SEM images obtained are exported into the software called ImageJ and analyzed in two different ways: one way is using 8 bits and other way is called RGB. An extract from the ImageJ software is given to support the results of treated CS aggregates. If the CS aggregates are treated, then no doubt that the water absorbing capacity of CS can be reduced.
Research on calculating the effects of earthquakes on the lining tunnel in Hanoi metro system
Authors: Nguyen Thanh Chi , Do Anh Ngoc , Pham Vi Van ,   Faculty of Civil Engineering, Hanoi University of Mining and Geology, Vietnam
Published: May 2021

At present, systems of infrastructure are built and developed very strongly in Hanoi. The metro tunnel system is also being designed and built in Hanoi to meet the requirements of economic and social development. The paper uses analytical methods (the Wang's method, Penzien’s method), hyperstatic reaction method and a numerical analysis method by Abaqus software to evaluate the effect of the strongest earthquake that could occur in to the lining tunnel in Hanoi metro system. Based on results obtained from assessing the effect of earthquakes to the lining tunnel in Hanoi metro system, this paper has compared and commented to these results for the purpose of finding the most accurate results about the impact of earthquakes on the lining tunnel in Hanoi metro system. These results and comments will be used in the design and construction tunnel in the Hanoi metro system under the impact of the earthquakes that could occur in Hanoi.
FLEXIBLE WORK PRACTICES AND EMPLOYEE RETENTION IN MANUFACTURING COMPANIES IN NIGERIA
Authors:   Depart of Management, Faculty of Business Studies, Ignatius Ajuru University of Education, Port Harcourt., Baridula Vito , Adanma Mekuri-Ndimele ,   Department of Office and Information Management, Faculty of Business Studies, Ignatius Ajuru University of Education, Port Harcourt.
Published: May 2021

Flexible work practices are very important to improve an employee retention in manufacturing companies in Nigeria. Therefore, the study examined the relationship between flexible work practices and employee retention in manufacturing companies in Nigeria. A cross-sectional research design was adopted in assessing the population of two hundred (200) employees of six (6) manufacturing companies in Nigeria. A sample size of 133 respondents was determined from this population through Krejcie and Morgan (1970) sample table. Primary data were generated through self-administered questionnaire. The reliability of the instrument was achieved through Cronbach Alpha coefficient reliability test and all items scored above 0.70 indicating a reliable research instrument. The hypotheses were tested using Spearman’s Rank Order Correlation Coefficient with the aid of Statistical Package for Social Sciences version 23.0. The findings show a positive and significant relationship between flexible work practices and employee retention in manufacturing companies in Nigeria. Thus, the study recommended that manufacturing companies in Nigeria should adopt flexible work practices in order to improve employee retention. Keywords: Flexible Work Practices, Employee Retention, Career Advancement Opportunities Job Autonomy, Promotional Opportunities, Employee Affective Commitment
Studying Hardiness in Convicts Serving Life Imprisonment in a High Security Penal Colony
Authors: KORNILOVA TAT’YANA V. , POZDNYAKOV VYACHESLAV M. , BALAMUT ALEKSANDR N.
Published: May 2021

Introduction: the paper proves that when studying hardiness in lifers it is constructive to use a concept developed by Salvatore R. Maddi, in the framework of which a three-component structure of this phenomenon was substantiated and a methodology for its studying was developed. The validity and reliability of this methodology was also confirmed during its initial adaptation in the research group of D.A. Leontiev and in many studies of Russian psychologists, on samples of convicts, too. Aim: to figure out the reasons for such a variety of findings on lifers and to determine their level of hardiness and motivation for pro-social life upon release. To achieve this goal we use the findings of a comprehensive study conducted in 2020 among inmates of Penal Colony no. 5 of the Vologda Oblast Division of the Federal Penitentiary Service of Russia. Methods: we studied the transformation of personality of convicted lifers on a sample of 46 men (aged 28 to 64 and held in the penal colony for the period from 8 to 26 years) with the use of the Hardiness Survey, semistructured interviews and essays – reflective self-reports of inmates on the difficulties that arise in the conditions of the correctional institution. Results: we have revealed that only one in ten convicts (10.9%) has a high level of overall hardiness, while one in four (23.9%) has a low level of overall hardiness. Among the components of hardiness, the lowest scores among the surveyed are observed on the scales “challenge” and “commitment” (37% and 30.4%, respectively). Slightly better scores are on the “control” scale (low level is observed in 26.1% of respondents), according to the data of interviews and essays, are associated with the influence of strict regime conditions. Conclusions: based on all the findings of the research, including the features of lifers’ dominant experiences and motivation for pro-social life on the outside, we substantiate the criteria for assessing their psychological readiness for being released on parole and the need for anthropological proportionality in the treatment of inmates with different levels of subject activity.

Keywords: hardiness; lifers; commitment; control; challenge; correctional institutions; punishment in the form of incarceration; release of lifers on parole; lifers’ personality features.
Pedagogical Technology as a Means to Develop Educational Self-Sufficiency in Students of Higher Education Organizations of FSIN Russia
Authors: PANOVA OKSANA B.
Published: May 2021

Introduction: the paper addresses the issue of enhancing the role of individual extramural studies for students of higher education institutions of the Federal Penitentiary Service of Russia and searches for ways to form students’ attitude towardindividual extramural studiesas a significant component of the educational process. Aim: description and scientific substantiation of a pedagogical technology aimed to develop educational self-sufficiency in future staff of the penal system. Methods: theoretical methods (studying and analyzing psychological and pedagogical literature on the subject, pedagogical simulation) and empirical methods (survey, performance results analysis). Results: in the course of our research we formed a set of definitions and terms, the key one among which is “educational self-sufficiency”. Pedagogical simulation helped us describe distance educational technology based on interactive pedagogical communication using Modular Object-Oriented Dynamic Learning Environment (Moodle). This technology focuses on the development of cognitive motivation in students, and the motivation source is found in a professionally oriented educational dilemma. An educational dilemma serves as an informational and conceptual unit that covers the content of a certain topic and the corresponding competence laid down in the structure of an academic discipline. The empirical research we conducted has shown that the use of this educational technology actually mobilizes students’ cognitive activity and fuels their interest in learning and future profession beyond the topics intended for classroom-based studies. Conclusions: we have found out that the performance efficiency of individual extramural studies depends on how the teacher organizes external supervision. It should correlate with the inner needs of students and bring to the fore a wide range of cognitive motives: motivating directly, motivating intellectually, motivating prospectively. Being in line with these conditions, the educational technology we describe can be used on a large-scale basis.

Keywords: educational self-sufficiency; educational process; pedagogical technology; cognitive motives; educational dilemma; electronic educational environment.
In Vitro Fermentation Characteristics of Camelina Meal Comparison with Soybean Meal
Authors: SIZMAZ Özge , ÇALIK Ali , BUNDUR Atakan
Published: May 2021

The search for new and cheap sources of protein has been increased lately. Although camelina meal has antinutritive factors; compare to soybean it can be widely useable. The objective of this study is to remove the question mark in minds about camelina meal and to determine the fermentation characteristics parameters including pH, ammonia-N level, volatile fatty acids concentration as well as total gas volume, methane proportion and the estimated degradation of camelina meal in comparison with soybean meal. Basically, we used in vitro gas production system according to modified Hohenheim Gas Test (HFT) to compare camelina meal and soybean meal. Rumen contents obtained from two Holstein cows. There was no significant difference of pH and ammonia-N concentration between soybean meal and camelina meal, whereas total volatile fatty acid and acetate concentration were reduced in camelina meal. Additionally, total gas production, fermentative CO2 and estimated ME and organic matter digestibility were not altered. However, methane production decreased significantly in camelina meal fermenters. Consequently, it was concluded that camelina meal can be replaced of soybean meal, since microbial fermentation does not change and it might reduce the methane emission in which has commonly major effect on environmental pollution as a sera gas.
The Effects of Different Levels of Rosehip Fruit Added in the Rations of Laying Hens Raised Under High Altitude and Cold Stress on Some Blood Parameters, Rectal Temperature, Fertility Rate and Chick Quality
Authors: ALDEMİR Reşit , TEKELİ Ahmet , DEMİREL Murat , YILDIZ Serhat , YÖRÜK İ. Hakkı , BELHAN Saadet , KOŞAL Volkan
Published: May 2021

This study was carried out to determine the effects of different doses (5g/kg, 10g/kg, 15g/kg) of rosehip fruit, which is a source of ascorbic acid (vitamine C), on fertility rate, chick quality and some blood parameters in the feed of breeder hens and roosters raised under high altitude and cold stress. It was applied during 12-week trial. While the fertility rate was not significantly affected by the treatments, the plasma vitamine C content of the laying hens was significantly affected by the treatments (P