bluuebunny/crossref_metadata_2025 huggingface dataset:
Brief communication: Nowcasting of precipitation for leading edge erosion-safe mode
Authors: Tilg Anna-Maria , Hasager Charlotte Bay , Kirtzel Hans-Jürgen , Hummelshøj Poul
Published: February 2020

Abstract. Leading edge erosion (LEE) of wind turbine blades is caused by the impact of hydrometeors, which appear in solid or liquid phase. A reduction of the wind turbine blades’ tip speed during severe precipitation events can mitigate LEE. To apply such an erosion-safe mode, a precipitation nowcast is required. Theoretical considerations indicate that the time a raindrop needs to fall to the ground is sufficient to reduce the tip speed. Furthermore, it is described that a compact vertical pointing radar that measures rain in different heights with a sufficient high spatio-temporal resolution can nowcast rain for an erosion-safe mode.
The Assessment of Heavy Metals Concentration in Groundwater: A Case Study of the Wa Municipality
Authors: Darimani Hamidatu S. , Kwofie Jonathan , Tuolong Justine G.
Published: February 2020

Water is a basic need for both domestic and industrial purposes. Regardless of the source of water it should not be contaminated. The purpose of this study is to establish the presence of heavy metals contaminants in groundwater in the Wa Municipality, Ghana. The study is an experiment of six (6) sample units which include: three (3) boreholes, two (2) wells and a sample from the Ghana Water Company Limited (GWCL) reservoir. The findings showed that Nitrite in JH1 (3.65 mg/l) and Iron in BM1 (1.365 mg/l) were beyond the benchmarks while other parameters in the rest of the sample units were within the World Health Organization (WHO) standards. Notwithstanding, the test was not significant (p = 0.359) at alpha 0.05 two tail test. The study concludes that the groundwater in the Wa Municipality is not much contaminated and is safe for drinking with minimum treatment.
Expressive Sibilant Retraction in North Norwegian: morpheme or ‘spoken gesture’?
Authors: Bye Patrik
Published: February 2020

North Norwegian has a contrast between /s/ and /ʂ/ that is neutralized in word-initial position before a consonant, and an optional process of Expressive Sibilant Retraction (ESR), which changes /s/ to [ʂ] in precisely the environment where the contrast is neutralized (Broch 1927). ESR appears ambiguous between a word formation process and a spoken gesture (Okrent 2002; Perlman et al. 2015). On the one hand, ESR exploits givens of phonological structure. On the other, treating it as a morphological process entails claiming that the spell-out of certain (“expressive”) morphemes may take place after phonological processes have applied, or that the realization of these morphemes takes precedence to phonological constraints. I argue that ESR is a communicative (i.e. non-linguistic, or post-linguistic) spoken gesture that nonetheless exploits the suspension of phonological generalizations in a way that directs attention to its iconic function. I describe the varied interpretations that ESR has depending on whether it indexes an action/event, object, or state/property, and propose that these share a common semantic core. This gesture-based account of ESR is offered as a possible model for “expressive phonology” (e.g. Diffloth 1979) in other languages.
Legal and Ethical Implications of Using Social Media in Human Resource Management
Authors: Zhang Lu
Published: February 2020

Now more than ever we live in a society saturated with technology and media.  We are captured by the technology whirlwind such as the internet, instant messages, emails, and social media such as Twitter and Facebook.  Technologies not only are changing the way people live, work, and interact with each other but also the way companies conduct their businesses.  Social media no doubt is one of such technologies that enables companies to market their products and services in new and unique dimensions.  Beyond marketing, social media is also changing the way human resource professionals recruit and select employees.   Recruiting and selecting potential new employees using social media, is gaining popularity.  There are even software programs that capitalize on the information available on social media sites to assist human resources professionals to source, screen, and track job applicants.  Although there are many advantages in using social media networks to assist HR to select and filter job candidates, there are reasons for concerns.  In this paper, we’ll examine the legal and ethical consequences of using social media in the area of human resource management.   Keywords: Social Media, Facebook, Human Resources, Management.
Contributo do empreendedorismo social para o desenvolvimento de Cabo Verde: um estudo exploratório
Authors: Bernardino Susana , Freitas Santos J. , Soares Maryzette
Published: February 2020

Social entrepreneurship has been recognized as a valuable tool for promoting sustainable economic development. The aim of the study is to explore the extent to which Portuguese Non-Governmental Organizations for the Development (ONGDP) contribute to the development of Cape Verde (CV). Thus, we indend to identify and assess the projects developed by ONGDP in CV, to understand the difficulties faced and the underlying motivations. To this end a qualitative methodology was used through the collection and analysis of secondary data (desk research) and interviews with the responsible of six ONGDP working in CV. The study concluded that the ONGDP do not focus on one area of activity, but several, such as health, rural development, education and training, among others. We found that ONGPs act in partnership with local organizations, which are crucial for understanding the concrete reality. CV has been benefited from the projects because of te common languege shared. To obtain resources, most ONGDP rely on in-kind contributions and volunteering. The generation of social value was achieved mainly through economic generating activities, seen as the most effective to ensure a sustained social response. The main difficulties arise from the specific characteristics of the territory and its orography which have implications for accessibility and communication.
Absorptive Capacity and Innovation: An Overview of International Scientific Production of Last Twenty-Five Years
Authors: Rossetto Dennys Eduardo , Carvalho Fábio Câmara Araújo de , Bernardes Roberto Carlos , Borini Felipe Mendes
Published: February 2020

This work aims to achieve an overview of international scientific production on absorptive and innovation capacities in order to mapping the academic contributions already made between 1990 and 2015 (last 25 years). Bibliometric methods, and social network analysis were used to understand the behavior of 1,693 published articles and analysis of key works cited. Most notably, the growing publication with related topics, in approximate exponential growth, concentration of work into five groups and six cocitação periodic coupling groups, indicating possible fields for publication related to the themes absorptive capacity and innovation. The analysis of the key articles cited identifies the themes and methods used, as well as understand the context of the themes absorptive capacity and innovation.
Are technology business incubators fulfilling their objectives? a study of the tbi's performance located in Brazil
Authors: Silva Adriana Queiroz , Da Cunha João Carlos
Published: February 2020

Technology business incubators (TBI) are considered an alternative for promoting entrepreneurship, innovation, employment and income generation, the maintenance of companies and consequently, local and regional development. However, despite the high number of incubators and investment made, the initiatives to assess the results of incubators are limited; little is known about the success of these in supporting the creation and development of new businesses. Within this context, this research analyzed the performance of technology business incubators located in Brazil. According to the proposed objectives, this research is of an exploratory, descriptive and analytical nature, in a quantitative approach that used a survey as a research strategy, obtaining a sample of 97 incubators researched, in a universe of 112 technology business incubators. Through the data analysis, it can be concluded, according to the results presented by the TBI surveyed, that these are beneath the fulfillment of the objectives that they propose so that they are not contributing effectively to the local and regional development. Thus, it is suggested that the TBI's managers reflect on the real reasons why the researched organizations are not achieving the purposes that justify their existence.
Measuring Non Monetary Innovation In Software: a case study in floss firms from Argentina
Authors: Motta Jorge , Morero Hernán Alejandro , Borrastero Carina
Published: February 2020

This paper presents a critical review of the design of innovation surveys that follow the Oslo Manual standards, based on a series of case studies in Free/Libre Open Source Software (FLOSS) companies. The main objective of the paper is to contribute to identify the specificities of innovation in FLOSS firms that traditional innovation surveys usually omit, to improve current innovation measures and metrics in the software sector. We applied a qualitative analysis based on seven case studies in FLOSS firms from Argentina, mainly through semi-structured interviews to key informants. Such analysis was aimed to elucidate the nature and particularities of the innovation processes and outcomes in the firms, the characteristics of the collaboration with the community and its role in the business model and innovation strategy of the organizations.
Design rights for Start-ups: Drawing a line of protection
Authors: Devarapalli Pratap , Soni Seema
Published: February 2020

Designs are considered as one of the imperative aspects of a business. Design rights as a branch of Intellectual property rights plays a crucial role in protecting unique designs from infringement. In this regard, design rights have become increasingly important for designers and businesses all over the globe. Primarily, this article provides an overview of design law and registration process in Australia with an emphasis on Start-ups and SMEs. Secondly, this article provides insights on design registration trends of Start-ups and SMEs in Australia. Thirdly, the study provides the importance of designs as an intellectual property for Start-ups and SMEs. Further, the study sheds some light on how registered designs can be used as collaterals.
Extraction and on line availability of indicators related to social responsibility, popularization and result prospection of research in nanotechnology in Brazil
Authors: Ferraz Renato Ribeiro Nogueira , De Brito Aline Grasiele Cardoso , Quoniam Luc , Mena-Chalco Jesús Pascual
Published: February 2020

Scriptlattes computational tool was used for extraction of performance indicators related to social responsibility, popularization and result prospection of research in nanotechnology in Brazil using as data source Plataforma Lattes and the CNPq Research Group Directory. Besides allowing for a quantitative evaluation of the bibliographic production on the matter, which used as base the number of published papers and book chapters, amongst other productions, the extractions have also allowed for the evaluation of indicators such as technological products, processes and techniques, related to the social responsibility in research, such as magazines and newspaper articles, linked to the popularization of Scientific results. Yet, the observation of indicators such as thesis and current research projects allowed the observation of prospective future results of current research in nanotechnology. Apart from the results related to the bibliographic productions, which can be found in several data basis, the tool makes available indicators in circular basis, which on turn, permit the prospect evaluation of future research results, as well as the evaluation of social responsibility and the popularization of research on the theme. The presented results may be replicated for any subject of interest, and may be used to guide future scientific research in the country.
E-government adoption: a systematic review in the context of developing nations
Authors: Mustaf Anas , Ibrahim Othman , Mohammed Fathey
Published: February 2020

Objective of the Study: This paper reviews the studies of e-government adoption in developing nations to come up with the factors that influence e-government adoption.Methodology/Approach: Secondary data was collected from the findings of other researches. Systematically, two reputable databases; Scopus and IEEE Explore were searched to retrieve studies of e-government adoption in developing nations.Originality/Relevance: Adoption has a key role in the successful implementation of e-government initiatives in the context of developing nations. However, minimal research has been carried out to explore determinant factors of e-government services adoption among developing nations’ citizens.Main Results: The theories and models applied in previous researches were identified. Moreover, the frequency of factors investigated in these studies was identified. The results showed that there are many studies investigated trust as an important factor of e-government adoption in developing nations, while there are other critical challenges such as security and awareness got less attention.Theoretical/Methodological Contribution: This study results may open for future research based on the gap in theories applied and the factors investigated in the context of developing nations.
Differentiation of countries in terms of the shore of domestic value added in exports
Authors: Doryń Wirginia
Published: February 2020

The emergence of global value chains entails that measuring the benefits of foreign trade cannot be limited to measuring trade flows nor their structure. The article aims atpresentingthe results of the time series cluster analysis of the share of the domestic value added of gross exports. It isbased ondata from the latest TiVA database (Trade in Value Added) from December 2018,covering the period 2005–2016. Four clusters of countries were identified. The cluster containing countries with the highest values of the national share of added value in exports included economies rich in natural resources (i.a., Saudi Arabia, Russia, South American countries), with a large internal market and involved in technologically advanced manufacturing processes/knowledge intensive services (including USA, Japan, Great Britain). A group with the lowest share of the domestic value added in exports (not exceeding 50%) contained small and open European economies of Luxembourg and Malta.
Comparison of normal random number generators
Authors: Sulewski Piotr
Published: February 2020

The sampling in statistical surveys and numerical calculations as well as simulation testing of probabilistic models in virtually all fields of knowledge require a com-puter endowed with pseudorandom numbers generators. The main goal of the study is to compare the normal random number generators using various criteria. The properties of 12 random number generators for a normal distribution were investigated. Then, the family of generators was extended by two so-called application generators and a new approach for checking the quality of generators was adopted. A ready-made tool pre-pared in C++ and in Visual Basic for Application (VBA) for conducting self-contained research using generators was presented. All Monte Carlo simulations were carried out in C++, while the calculations were performed in the VBA editor using the Microsoft Excel 2016 spreadsheet. The analysis of the obtained results shows that the generators with best properties are: MP Monty Python, R, Biegun and Ziggurat. The worst generators, are: BM Box-Muller, Wallace, Iloraz and Excel.
Selected Aspects of Cooperation Between the Police and the State Fire Service
Authors: Socha Robert
Published: February 2020

The necessity of cooperation is dictated by steadily increasing number of threats, which creates the need for continuous cooperation of numerous entities which, by law, possess the ability to support each other in counteracting these threats remaining in the scope of cognizance of cooperating entities and elimination of the consequences of these threats. On the basis of the agreements, the SFS cooperates with various entities involved in rescue operations, including the Police. Cooperation of the SFS and the Police exists in the area of joint rescue operations, public order enforcement, evacuation, training and exercises, as well as in the scope of prevention. Given the data on cooperation so far, it should be stated that most frequently the cooperation between the SFS and the Police occurs in relation to handling road accidents. In the Polish legal system, permanently perfected, there are various standards regulating the sphere of state security, ensuring which on an appropriate level is one of numerous conditions for the secure existence of the state. Improvement of said system is dictated by the common belief that the security was not, is not, and,
undoubtedly, will never be a fixed term, but one that must be constantly strived for. The predominant role in this process is played by public administration, including the State Fire Service. Preparation of the State Fire Service to fully and effectively fulfil the connected with it duties is possible primarily due to the proper organization of cooperation.
Ecological and Judicial Expertise in Criminal Proceedings Against the Environment in Russia
Authors: Solodov Ilia
Published: February 2020

Environmental expertise plays a special role in the course of the investigation of environmental crimes. Its main task is to recreate the mechanism of the incident, established the causation link, as well as determine the scale the negative impact
on the environment and the measures to restore its original state. The author discusses the current practice of the environmental expertise in the Russian Federation. In Russia the experts from the state or private laboratories can be appointed to assist the investigator and the court in performing their tasks. The problem is that there is no commonly accepted expert methodology in a case
of environmental offences. While the state experts can be expected to apply the standardised methodology approved by the Russian Centre of Forensic Expertise in Moscow, their colleges from the private sector are free to use any methods they consider as appropriate depending on the circumstances of the case. Unfortunately, in Russia, as well as in Poland, there are no effective control mechanisms to ensure that the methods applied and the data used by the experts are scientifically valid. It means that the obtained results are
no always reliable and accurate. Another problem referred to the difficulties of the damage assessment in such cases. The dynamics of the environment, the complicity of the relations between its elements makes it extremely hard to assess the scale of the negative impact, as well as to establish the causation link between the human’s actions or negligence and observed changes.
Polish Criminology from Historical and Current Perspective
Authors: Guzik-Makaruk Ewa M. , Pływaczewski Emil W.
Published: February 2020

The article on Polish Criminology from Historical and Current Perspective is divided into four parts. There are: Introduction — historical Perspective, Białystok School of Criminology, National Forum of Young Criminologists, International
Centre for Criminological Research and Expertise. In the final part of article the authors stressed, that activities of Białystok School of Criminology have much more broad-spectrum, than described. The International Centre of Criminological Research and Expertise conducts interdisciplinary basic research and development works serving both internal security and justice. The Centre
aims at entering into cooperation with the State authorities, private sector entities and NGOs, within the country and abroad, along with preparation of expert opinions at their request. It will also conduct publishing and popularizing activities. The representatives of Białystok School of Criminology are also members of such scientific initiatives like: the Academic Forum — Legal and Medical Aspects of Human Health and the Academic Forum — Podlasie — Warmia and Mazury. As a result of these initiatives, in May 2015 there was the international conference Legal, Criminological and medical aspects of social exclusion attended by over 200 people. The scholars from Białystok School of Criminology are open to cooperation, especially of international character. The broad spectrum of research on issues of science criminology in many institutions, centres and academic institutions is an eloquent proof of the dynamic development of criminology in Poland.
Remote Search of IT System in Polish Legislation and Its Importance in Fight
Against Cybercrime
Authors: Olber Paweł
Published: February 2020

The issues of remote access by law enforcement authorities to data in remote IT systems are extremely difficult and controversial. The literature stresses that such activities threaten the right to privacy of the parties involved in the proceedings and the right to a fair trial. However, on the other hand, the dynamic development of new technologies and the need to combat cybercrime effectively require that law enforcement and judicial authorities make use of adequate legal and technical solutions. One such a solution may be a remote search of an IT system, which exists in many European countries, including Belgium, Romania
and Germany. In the case of Poland, a search of an IT system as a procedural activity is only allowed in respect of a system in which the person concerned is a dispatcher or user. The Polish legislator has not implemented procedural provisions enabling remote searches via the Internet. In case of the necessity of a system remote search, it will be necessary to conduct a parallel search. Another
way of obtaining remote access to data and IT systems may be new methods of covert surveillance, which have been introduced into the Police Act. The new regulations generate a lot of interest among Polish police officers, but at the same time they provoke a lot of discussion. The diversity of the existing approach leads to the development of a uniform interpretation of the introduced
regulations, which has been adopted as the subject of this study.
Uma Análise da Polaridade Expressa nas Manchetes de Notícias Brasileiras
Authors: Ramos Pedro , Reis Julio , Benevenuto Fabrício
Published: February 2020

Nos últimos anos, com o crescimento da internet como meio de comunicação, um grande número de pessoas mudou a maneira de consumir notícias, substituindo os tradicionais jornais e revistas impressos por suas versões virtuais online e/ou web blogs. Sites de notícias têm que criar estratégias eficazes para chamar a atenção das pessoas e atrair seus cliques. Considerando isso, neste trabalho investigamos as possíveis estratégias utilizadas por jornais de notícias online na concepção de suas manchetes. Especificamente, analisamos o conteúdo de 59.510 notícias produzidas por 8 importantes e diferentes jornais brasileiros em um período de aproximadamente 3 meses do ano de 2015. A fim de descobrir as estratégias que poderiam ser usadas para atrair cliques, foram extraídas características do texto das notícias relacionadas com a polaridade expressa nas manchetes. Apresentamos ainda uma metodologia para avaliar a força e o teor da polaridade contida nas manchetes ao longo do tempo. Nossos resultados revelam várias observações interessantes sobre a polaridade expressa em notícias e, além disso, identificamos fortes evidências de que a polaridade das manchetes é impactada pela ocorrência de eventos específicos.
Ciência da Computação também é coisa de menina!
Authors: Mochetti Karina , Salgado Luciana , Zerbinato Ana Valladares , Souza Beatriz Lopes , Avelino Meirylene Rosa Emidio
Published: February 2020

A participação de mulheres nas áreas de Computação e Tecnologia da Informação é extremamente baixa. Tal fato é preocupante já que diversidade em qualquer ambiente é de vital importância para sua evolução, principalmente no cenário atual em que os usuários passaram de consumidores para produtores de tecnologias e conteúdos digitais. Esse trabalho descreve a atividade inaugural realizada por nós na Universidade Federal Fluminense (UFF) com os alunos recém-inscritos no curso de Ciência da Computação. O objetivo principal do evento era promover uma discussão sobre o que leva as meninas a escolherem ou (não) a área de tecnologia da informação e analisar a interação entre os alunos, principalmente com as meninas, nos primeiros dias de aula.
Levantamento e análise dos dados da presença feminina discente no curso de Bacharelado em Sistemas de Informação do Instituto Federal Catarinense, campus Camboriú
Authors: Schmidt Ana Elisa , De Britto Hiryna Philipps , Koehler Mozara Dias
Published: February 2020

Este artigo apresenta o levantamento e análise dos dados da presença feminina discente no curso de Bacharelado em Sistemas de Informação do IFCCamboriú desde a criação do curso. Apresenta-se comparativos com dados dos discentes do sexo masculino visando evidenciar as diferenças encontradas.
Mapeamento de iniciativas estrangeiras em língua inglesa que fomentam a entrada de mulheres na Computação
Authors: Nunes Maria Augusta S. N. , Louzada Carolina S. , Salgueiro Edilayne M. , Andrade Beatriz T. , De Lima Patrícia S. , Figueiredo Raquel M. C. T.
Published: February 2020

Esse artigo tem como objetivo obter um panorama das iniciativas estrangeiras baseadas em língua inglesa que fomentam a entrada de mulheres da área da Computação no mundo. A metodologia utilizada foi inspirada no processo de Mapeamento Sistemático. Concluiu-se que há, atualmente, uma significativa quantidade de iniciativas estrangeiras baseadas em língua inglesa distribuídas mundialmente que fomentam a entrada de mulheres na área da Computação.
Um Estudo Inicial Sobre As Alunas Ingressantes no Curso de Licenciatura em Ciência da Computação da Universidade Federal da Paraíba
Authors: De Figueiredo Renata V. , Dantas Vanessa Farias , Coutinho Gabriela , Nascimento Ryslânia R. S. , Nascimento Ana Caroline C. , Nunes Beatriz Pamela M.
Published: February 2020

A queda da participação feminina nos cursos da área de Tecnologia da Informação tem chamado a atenção de empresas e universidades em vários países, em um momento em que muito se discute a igualdade de gênero e de oportunidades. Além de promover iniciativas para estimular o ingresso de garotas nesses cursos, faz-se necessário realizar estudos para conhecer o perfil das ingressantes e identificar padrões que possam direcionar ações contra a evasão. O presente trabalho analisa dados referentes a todas as alunas do curso de Licenciatura em Ciência da Computação, desde sua criação até os dias atuais.
Reforming Georgian Education: Recommendations for using Classroom Assessment to improve Student Outcomes
Authors: C. Sales Gregory , Sentočnik Sonja , W. Richardson Jayson , Gorgodze Sophia
Published: February 2020

In post-Soviet Georgia, much of the teaching and learning in grades 7-12 is conducted in a
manner very similar to that used generations ago. Teachers stand at the front of the classroom dispensing information as they lead students through a page-by page review of the text. The concept of using classroom assessment techniques to gather individualized data that will inform instructional practices is unknown to the majority of Georgia’s teachers. This article describes efforts to explore the education context in Georgia and to develop project recommendations for effective support of teacher growth and their integration of classroom assessment practices into their teaching. It concludes by recognizing threats to the successful implementation of the recommendations and suggesting the generalizability of the project’s methods and resulting recommendations.
Editorial: 14o Fórum da Escolas de Moda e 15o Colóquio de Moda
Authors: Sant'Anna Mara Rúbia , De Mattos Maria de Fátima Garcia
Published: February 2020

Não consta
Effect of the teaching model on the individual technique of soccer players sub-10
Authors: Pérez-Muñoz S. , Chamorro-Juanes P. , Rodríguez-Cayetano A. , Sánchez-Muñoz A. , De Mena-Ramos JM.
Published: February 2020

El objetivo del estudio fue comparar el efecto del modelo de enseñanza en la mejora de la técnica individual en ambas piernas de jugadores de fútbol sub-10. Se analizaron a 12 jugadores que realizaron ocho sesiones con un modelo tradicional y ocho con un modelo moderno. Se midió: pase, control, conducción y golpeo de balón. El modelo tradicional mejora el pase y golpeo con la derecha y la conducción de balón con ambos pies, con diferencias significativas (p<.05) en el pase con derecha y la conducción de balón con ambas piernas. En el modelo innovador mejora el pase con pie dominante, la conducción lineal con ambos pies y el golpeo de balón a portería con ambos pies, con diferencias significativas en la conducción de balón con ambas piernas (p<.05). Por estos motivos, la mejora de la técnica individual de los jugadores necesita de la utilización modelos tradicionales e innovador.

The aim of the study was to compare the effect of the teaching model on the improvement of individual technique in both legs of soccer players sub-10. We analyzed 12 players who made eight sessions with a traditional model and eight with an innovative model. It was measured: pass, control, driving and hitting the ball. The traditional model improves the pass and hit with the right and the ball driving with both feet, with significant differences (p <.05) in the right pass and the ball driving with both legs. In the innovative model improves the pass with dominant foot, linear driving with both feet and hitting the ball on goal with both feet, with significant differences in the driving of the ball with both legs (p <.05). For these reasons, the improvement of the individual technique of the players requires the use of traditional and innovative models.
Elektrikli Taşıtlarda Kullanılan İndüksiyon / Sabit Mıknatıslı Motor Sürücülerinin Simülasyonu ve Motor Dinamiklerinin Analizi
Authors: KIYAK İsmail , KAYA Koray Yılmaz
Published: February 2020

Bu
makalede, elektrikli araçlarda kullanılan motor çeşitlerinden sincap kafesli
indüksiyon motor ve sabit mıknatıslı senkron motorun yapısal özellikleri ve hız
dinamikleri karşılaştırılmıştır. Karşılaştırılmanın doğru yapılabilmesi için
aynı tork altında benzer parametrelere sahip motorlar, alan odaklı kontrol
(FOC) yöntemi ile sürülmüştür. 
Motorların hızlanma ve yavaşlama esnasında geçici hal durumları
simülasyon ortamında incelemiş ve karşılaştırılmıştır. Sonuçlar göstermektedir
ki indüksiyon motorları hız değişimlerine daha çabuk tepki gösterirken, sabit
mıknatıslı motorlar daha geç tepki vermektedir. Bunun yanında sabit mıknatıslı
motorların tork gerektiren kalkış anlarında daha iyi performans gösterdiği
anlaşılmıştır. Simülasyon PSIM programı kullanılarak gerçekleştirilmiştir.
Simülasyonda kullanılan motor sürücülerin anahtarlama frekansı, giriş
gerilimleri vb. parametreler aynı seçilmiştir.
US Food and Drug Administration Black Box Warnings
Authors: Smith Robert G.
Published: February 2020

Podiatric Physicians have an ethical obligation to prescribe responsibly and cautiously to diminish and minimize the growth of drug adverse effects. Clinicians who prescribe, dispense, and administer medications must be vigilant in continually reviewing new Black Box Warnings for medications they use for their patients. The safe and appropriate selection of medications and prescribing strategies are presented. First, the concept and process for these FDA black box warnings are introduced. Then, to enrich the podiatric physician's body of knowledge, several FDA boxed warnings from 27 selected drug products that may be prescribed by podiatric physicians are presented graphically as a table. Finally, strategies for safe prescribing of these drugs with boxed warnings are presented.
Scattering of Electromagnetic Wave by system of core/shell microsphere and nanoparticle
Authors: Abramov A. , Kostikov A. , Yue Y.
Published: February 2020

The paper deals with the scattering of an electromagnetic plane wave by a system of core/shell microspheres and a single nanoparticle placed outside the spheres. Backscattering intensity perturbation caused by the nanoparticle was studied, and it was found that the position of the inner sphere can be used as a new effective tool to both detect a particle and to determine its size. The system of core/shell microspheres provides a longer particle detection distance compared with a single sphere system. It is shown that the maximum value of the perturbation of backscattering is reached at the interspherical distance corresponding to the maximal energy of the electromagnetic wave concentrated in the vicinity of the nanojet.
LINC00958 and HOXC13-AS as key candidate biomarkers in head and neck squamous cell carcinoma by integrated bioinformatics analysis
Authors: Xiong Dan , Wu Wei , Kan Lijuan , Chen Dayang , Dou Xiaowen , Ji Xiang , Wang Mengmeng , Zong Zengyan , Li Jian , Zhang Xiuming
Published: February 2020

Background

Head and neck squamous cell carcinoma (HNSCC) is a malignant tumor with a strong tendency for metastasis and recurrence. Finding effective biomarkers for the early diagnosis of HNSCC is critical for the early treatment and prognosis of patients.

Methods

RNA sequencing data including long non-coding RNAs (lncRNAs), messenger RNA (mRNAs) and microRNAs (miRNAs) of 141 HNSCC and 44 adjacent normal tissues were obtained from the TCGA. Differentially expressed genes were analyzed using the R package DESeq. GO terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were conducted. A competing endogenous RNAs (ceRNA) network was constructed. The most differentially expressed genes in the main ceRNA network were chosen for nasopharyngeal carcinoma (NPC) cell lines and NPEC2 Bmi-1 cell line verification. A receiver operating characteristic (ROC) curve was constructed for 141 specimens of HNSCC tissues from 44 control samples.

Results

In our study, 79 HNSCC-associated abnormally expressed lncRNAs , 86 abnormally expressed miRNAs and 324 abnormally expressed mRNAs were identified. The public microarray results showed that LINC00958 and HOXC13-AS expression levels were upregulated in HNSCC tissues compared with the adjacent normal tissues in this study (p < 0.0001). LINC00958 and HOXC13-AS expression levels in NPC cell lines were higher than those in the NPEC2 Bmi-1 cell line (p < 0.05). The results showed that the area under the ROC curve (AUC) of LINC00958 reached up to 0.906 at a cutoff value of 7.96, with a sensitivity and specificity of 80.85% and 90.91%, respectively. The AUC of HOXC13-AS reached up to 0.898 at a cutoff value of 0.695, with sensitivity and specificity values of 86.23% and 83.78%, respectively.

Conclusion

The current study indicates that LINC00958 and HOXC13-AS are new candidate diagnostic biomarkers for HNSCC patients.
Narrow Lanes to Big Markets: An Overview of Traditional Printed Handloom Industry of Pilkhuwa (U.P.)
Authors: Upadhayay Hema , Goel Alka
Published: February 2020

Handloom industry is one of the important segments of the textile industry in India. There are a number of centres that are specifically engaged in the production and adornment of handloom textiles. Pilkhuwa, a small town in Ghaziabad (U.P) situated on the NH24, 51 km from Delhi border, is also carrying its legacy of printed handloom textiles. Furnishings, specially bed sheets in beautiful designs and vibrating colours in a wide variety of fabrics and thread density are the main attraction of Pilkhuwa market. The prepared products are sold in local markets to the retailer in wholesale whereas some large manufacturers export the quality products to other parts of the country as well as abroad. The present study aims to identify the prevailing practises, current status, changing scenario and SWOT analysis of the selected cluster of Pilkhuwa (U.P.) that produces printed home furnishings. The information on handloom printing, designing and marketing was obtained through questionnaires, complemented by free interview and informal conversations with printers and local shopkeepers. The result revealed that many local communities i.e. dhobis, luhaar, weavers and their families directly and indirectly linked to this home furnishing industry for their livelihood. There is a growing opportunity for product diversification in the domestic market as well as in the export market.
Analysis of Lipids: Triacylglycerols, Phospholipids, Fatty Acids, and Others
Authors: Byrdwell William C.
Published: February 2020

Lipids comprise large and disparate classes of molecules having very different overall polarities, but the one characteristic they typically have in common is a nonpolar hydrocarbon chain that is hydrophobic in nature. The characteristics of each class of lipid dictate the most appropriate tool and approach for analysis. Since many PLs are inherently charged, the polar head group makes them ideally amenable to soft ionization by electrospray ionization (ESI) coupled to MS. In contrast, triacylglycerols (TAGs) are large neutral molecules that are not easily directly ionized by electrospray ionization mass spectrometry (ESI‐MS), and formation of adducts is necessary. Atmospheric pressure chemical ionization (APCI) and atmospheric pressure photoionization (APPI) both readily ionize neutral molecules such as TAGs and sterols. This article will outline the characteristics of each class of lipid, and how these affect the choice for the most appropriate tool for their analysis, including special steps and considerations to be taken into account to optimize analysis of each class. Emphasis will be given to neutral lipids (i.e. TAGs), which are the major components of many edible lipid mixtures. The article will also focus on the approaches necessary to derive the desired structural information from lipids. Many of the principles fundamental to lipid analysis in foods and edible oils were developed for analysis of biological samples, but are directly applicable to fats and oils. This article is intended to serve as a guide for decision‐making, by discussing the strengths and weaknesses and the benefits and shortcomings of the available options for detailed lipid analysis.
LidNA, a miRNA inhibitor constructed with unmodified DNA, requires an xxxA insertion sequence in miRNA binding site for its potent inhibitory activity
Authors: Tachibana Akira , Saito Satoshi , Fujiyama Yukiko , Tanabe Toshizumi
Published: February 2020

The involvement of miRNAs in the pathogenesis of various diseases, including cancer, poses the need for developing miRNA inhibitors. Previously, using unmodified DNA, we designed LidNA, which inhibited miRNA function more potently than 2′‐O‐methylated RNA and locked nucleic acid. LidNA consists of a complementary sequence to miRNA flanked by two structured DNAs. Alterations in the connected sequences between the complementary region and structured region modestly affect miRNA inhibition activity. Surprisingly, variations in the mismatched insertion sequence in the center of the complementary sequence significantly affect activity. The central insertion sequence xxxA is required for the potent miRNA inhibitory effects of LidNA. This suggests that both the structure and insertion sequence of LidNA and other miRNA inhibitors should be considered for maximal miRNA inhibitory activity.
Prolyl 4‐hydroxylase subunit alpha 1 (P4HA1) is a biomarker of poor prognosis in primary melanomas, and its depletion inhibits melanoma cell invasion and disrupts tumor blood vessel walls
Authors: Eriksson Johanna , Le Joncour Vadim , Jahkola Tiina , Juteau Susanna , Laakkonen Pirjo , Saksela Olli , Hölttä Erkki
Published: February 2020

Melanoma is an unpredictable, highly metastatic malignancy, and treatment of advanced melanoma remains challenging. Novel molecular markers based on the alterations in gene expression and the molecular pathways activated or deactivated during melanoma progression are needed for predicting the course of the disease already in primary tumors and for providing new targets for therapy. Here, we sought to identify genes whose expression in primary melanomas correlate with patient disease‐specific survival using global gene expression profiling. Many of the identified potential markers of poor prognosis were associated with the epithelial–mesenchymal transition, extracellular matrix formation, and angiogenesis. We studied further the significance of one of the genes, prolyl 4‐hydroxylase subunit alpha 1 (P4HA1), in melanoma progression. P4HA1 depletion in melanoma cells reduced cell adhesion, invasion, and viability in vitro. In melanoma xenograft assays, we found that P4HA1 knockdown reduced melanoma tumor invasion as well as the deposition of collagens, particularly type IV collagen, in the interstitial extracellular matrix and in the basement membranes of tumor blood vessels, leading to vessel wall rupture and hemorrhages. Further, P4HA1 knockdown reduced the secretion of collagen triple helix repeat containing 1 (CTHRC1), an important mediator of melanoma cell migration and invasion, in vitro and its deposition around tumor blood vessels in vivo. Taken together, P4HA1 is an interesting potential prognostic marker and therapeutic target in primary melanomas, influencing many aspects of melanoma tumor progression.
Molten Salt Electrochemical Synthesis of Ternary Carbide Ti3AlC2 from Titanium‐Rich Slag
Authors: Pang Zhongya , Zou Xingli , Li Shangshu , Tang Wei , Xu Qian , Lu Xionggang
Published: February 2020

Ti3AlC2 is electrochemically synthesized from titanium‐rich slag/Al2O3/C mixtures in molten salts. The intermediate products are systematically analyzed to investigate the formation process of Ti3AlC2. The results show that the synthesis process typically involves an electrodeoxidation process and in situ carburization/combination process. In addition, most of the undesired metallic oxides contained in the titanium‐rich slag are removed effectively during the electrolysis process, and the removal mechanism of these undesired metallic oxides is further discussed. The influences of different molten salts (including molten CaCl2 and CaCl2–NaCl) and temperatures (range of 800–1000 °C) on the final products are also studied. The results show that these electrosynthesis conditions influence the morphology and phase composition of the products. The synthesized Ti3AlC2 particles possess an irregular plate‐like morphology. It is suggested that the molten salt electrochemical synthesis technology is a promising process to produce Ti3AlC2 and/or other MAX phases from multicomponent complex ores.
Highly Reversible Zn Anode Enabled by Controllable Formation of Nucleation Sites for Zn‐Based Batteries
Authors: Liang Pengcheng , Yi Jin , Liu Xiaoyu , Wu Kai , Wang Zhuo , Cui Jin , Liu Yuyu , Wang Yonggang , Xia Yongyao , Zhang Jiujun
Published: February 2020

Aqueous Zn batteries have drawn tremendous attention for their several advantages. However, the challenges of Zn anodes such as the corrosion and ZnO densification have compromised their application in rechargeable Zn‐based batteries. In this paper, a straightforward strategy is employed to facilitate the uniform Zn stripping/plating of the Zn anode through using a ZrO2 coating layer, which contributes to the controllable nucleation sites for Zn2+ and fast Zn2+ transportation through the favorable Maxwell–Wagner polarization. As a result, the low polarization (24 mV at 0.25 mA cm−2), high Coulombic efficiency (99.36% at 20 mA cm−2), and long cycle life (over 3800 h at 0.25 mA cm−2) can be obtained for the ZrO2‐coated Zn anode. It is believed that the ZrO2 coating layer can also act as an inert physical barrier to decrease the contact of the anode and electrolyte, thus reducing both the Zn corrosion and formation of ZnO densification, and then improve the reversibility of Zn anode. The results demonstrated in this work provide an appealing strategy for the future development of rechargeable Zn‐based batteries.
Faster Activation and Slower Capacity/Voltage Fading: A Bifunctional Urea Treatment on Lithium‐Rich Cathode Materials
Authors: Lin Tongen , Schulli Tobias U. , Hu Yuxiang , Zhu Xiaobo , Gu Qinfen , Luo Bin , Cowie Bruce , Wang Lianzhou
Published: February 2020

Li‐rich layered oxides are promising cathode materials for next‐generation Li‐ion batteries because of their extraordinary specific capacity. However, the activation process of the key active component Li2MnO3 in Li‐rich materials is kinetically slow, and the complex phase transformation with electrode/electrolyte side reactions causes fast capacity/voltage fading. Herein, a simple thermal treatment strategy is reported to simultaneously tackle these challenges. The introduction of a urea thermal treatment on Li‐rich material Li1.87Mn0.94Ni0.19O3 leads to oxygen deficiencies and partially reduced Mn ions on the oxide surface for activating the Li‐rich phase. In situ synchrotron study confirms that the urea‐treated cathode shows much faster Li extraction from both Li and transition metal layers with less oxygen evolution upon charging than that of untreated counterparts. Moreover, the decomposition products of urea during thermal treatment subsequently deposit on the surface of cathode material, leading to a unique passivation layer against side reactions between electrode and electrolyte. Soft X‐ray absorption spectroscopy reveals the structural evolution mechanism with a significantly suppressed dissolution of Mn species over cycling measurement. The urea‐treated Li1.87Mn0.94Ni0.19O3 shows accelerated activation kinetics to reach high capacity of 270 mA h g–1 and demonstrates excellent capacity retention of 98.49% over 300 cycles with slower voltage decay.
Ultralow‐Strain Zn‐Substituted Layered Oxide Cathode with Suppressed P2–O2 Transition for Stable Sodium Ion Storage
Authors: Wang Yanxia , Wang Liguang , Zhu He , Chu Jun , Fang Yongjin , Wu Lina , Huang Ling , Ren Yang , Sun Cheng‐Jun , Liu Qi , Ai Xinping , Yang Hanxi , Cao Yuliang
Published: February 2020

Layered transition metal oxides have drawn much attention as a promising candidate cathode material for sodium‐ion batteries. However, their performance degradation originating from strains and lattice phase transitions remains a critical challenge. Herein, a high‐concentration Zn‐substituted NaxMnO2 cathode with strongly suppressed P2–O2 transition is investigated, which exhibits a volume change as low as 1.0% in the charge/discharge process. Such ultralow strain characteristics ensure a stable host for sodium ion storage, which significantly improves the cycling stability and rate capability of the cathode material. Also, the strong coupling between the highly reversible capacity and the doping content of Zn in NaxMnO2 is investigated. It is suggested that a reversible anionic redox reaction can be effectively triggered by Zn ions and is also highly dependent on the Zn content. Such an ion doping strategy could shed light on the design and construction of stable and high‐capacity sodium ion host.