bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimisation of process parameters for M.A.G welding of API X70m material to predict tensile strength using Taguchi method
Authors: Akonyi N.S. , Olugboji O.A. , Egbe E.A.P. , Adedipe O. , Lawal S.A. 
Published: March 2021

Girth welded replica of API X70M material have been produced on NG-GMAW welding technique. The particular area of interest is to develop suitable girth welding process parameter using NGGMAW. The major aim of the work was to replicate welds having tensile strength between 650 and 680 MPa. Design of Experiment (DoE) method by Taguchi design, using some selected welding processes was adopted. Two process parameters (factors) – arc voltage and wire feed rate, (the variables), and three levels were used. The resultant joint property on tensile strength of X70M pipeline was examined. The targeted mechanical property was achieved by selecting the best process parameters. Their effects on ultimate tensile strength – UTS was analysed using statistical technique – analysis of variance - ANOVA and Signal to Noise - S/N ratio with ‘thebigger-the–better’ value. Validation was done using MIDAS NFX (an FEA) mechanical engineering software. In conclusion, process parameters that affects or influences the girth welded properties of API X70M under field conditions were identified. Guidance for the specifications and selection of processes that could be used in field-welding for optimum performance has been recommended.
Keywords: Optimization, Girth-Weld, Process Parameters, Tensile Strength, NG-GMAW
Control of vortex shedding around a circular cylinder using bubble tabs in the laminar flow regime
Authors: Atofarati E.O. , Muritala A.O. , Malomo B.O. , Adio S.A. 
Published: March 2021

Vortex induced vibration (VIV) is the major cause of several catastrophic disasters due to fatigue failures induced by drag and lift forces in aerodynamic systems. This study investigates the control of VIV phenomenon through passive bubble tab(s) having a small diameter (d) relative to the main circular cylinder (D) in a two-dimensional (2-D) flow domain. Using ANSYS Fluent computational software, flow analysis was conducted at a Reynolds number (Re) of 80 for various bubble tab configurations at different spacing ratios (x/D) and diameter ratios (d/D). The drag coefficient, the velocity and pressure contours, along with the flow streamlines in eachcase were studied. The results indicated the optimized tab(s) positions for different spacing ratios, diameter ratios, and configurations. The study effectively established that passive bubble tabs can potentially control VIV associated with flows around a circular cylinder.
Keywords: Vortex Shedding; Drag Coefficient; Circular Cylinder; Bubble Tab(S); Spacing Ratio; Diameter Ratio.
Sustainable cloud computing for cognitive intent based networks
Authors: Periola A.A. , Obayiuwana E. 
Published: March 2021

Intent based networks enable auto-configuration and require low latency access to cloud platforms. The use of cloud platforms incurs high operational costs. Low latency access can be realized by siting data centres close to subscribers. This paper proposes aquaria data centers with low operating costs and latency. In LTE, cloud platforms are normally accessed via the packet network gateway reachable via the serving gateway and mobility management entity. Aquaria data centers are sited close to LTE subscribers and accessed via the mobility management entity. This reduces the size of control packets in the LTE network. Simulations show that the proposed architecture reduces the size of control packets by up to 49.7% and 99.3% when header packets are uncompressed and compressed respectively. The delay associated with receiving configuration information is reduced by 50% on average. The channelcapacity is enhanced by up to 22.8% on average.
Keywords: Data centers, LTE-Advanced, Peak Age of Information, Channel Capacity, Header (Control) Packet
Development of optimized substitution ratio for wheatcassava-african yam bean flour composite for Nigerian bread industries
Authors: Nwatu I.E. , Nwajinka O.C. , Muochebe A.B. 
Published: March 2021

An optimization study of the mix ratio for substitution of Wheat flour with Cassava and African Yam Bean flours (AYB) was carried out and reported in this paper. The aim was to obtain a mix ratio that would optimise selected physical properties of the bread. Wheat flour was substituted with Cassava and African Yam Bean flours at different levels: 80% to 100% of wheat, 0% to 10% of cassava flour and 0% to 10% for AYB flour. The experiment was conducted in mixture design which was generated and analysed by Design-Expert Software 11 version. The Composite dough was prepared in different mix ratios according to the design matrix and subsequentlybaked under the same conditions and analysed for the following loaf quality attributes: Loaf Specific Volume, Bread Crumb Hardness and Crumb Colour Index as response variables. The objective functions were to maximize Loaf Specific Volume, minimize Wheat flour, Bread Crumb Hardness and Crumb Colour Index to obtain the most suitable substitution ratio acceptable to consumers. Predictive models for the response variables were developed with the coefficient of determination (R2 ) of 0.991 for Loaf Specific Volume (LSV) while that of Bread Crumb Hardness (BCH) and Crumb Colour Index (CCI) were 0.834 and 0.895 respectively at 95% confidence interval (CI).The predicted optimal substitution ratio was obtained as follows: 88% Wheat flour, 10% Cassava flour, and 2% AYB flour. At this formulation, the predicted Loaf Specific Volume was 2.11cm3 /g, Bread Crumb Hardness was 25.12N, and Crumb Colour Index was 18.88.The study shows that addition of 2% of AYB flour in the formulation would help to optimise the LSV, BCH and the CCI of the Wheat-Cassava flour bread at the mix ratio of 88:10. Application of the results of this study in bread industries will reduce the cost of bread in Nigeria, which is influenced by the rising cost of imported wheat. This is a significant development because wheat flour was the sole baking flour in Nigeria before wheat substitution initiative.
Keywords: Bread, wheat, Cassava, African Yam Bean, Flour, Dough, Loaf Specific Volume, Crumb Hardness, Crumb Colour Index
An evaluation of safety risk factors during installation and dismantling of tower cranes in construction sites
Authors: Salihu A.A. , Aliyu S.S. , Abubakar M. 
Published: March 2021

The construction industry plays a central and significant role in the economy of any nation. One of the major reasons for ineffective project delivery in the Nigerian construction industry is the improper assessment of risk factors. The industry however is currently facing a lot of challenges which include constant increase in the rate of accidents on construction sites which could be dueto ineffective safety management as construction companies are usually interested in maximizing their profit in order to secure funds for new investments, and cover possible expenses associated with the occurrence of risk factors during construction. Installation anddismantling of tower crane had been previously looked at as a general safety issue until, recent research showed that about 69% of accidents related to tower cranes in Korea from 2001-2011, occur during installation and dismantling process. In view of this, this paper aimed at evaluating safety risk factors during installation and dismantling by determining their probability of occurrence and degree of impact with a view to establishing the most significant ones. This is why a well-structured questionnaire was designed to collect data with respect to their probability of occurrence and degree of impact using a 5 point Likert scale. Responses from the administered questionnaire and interactions were collated, interpreted and analysed using descriptive statistics (mean) and results presented in tables. Results showed that abrasion (wear and tear of components such as bolts, nuts, or pins) is the most probable factor with a mean value of 3.63. Fracture of a wire rope during dismantling had the highest degree of impact with a mean valueof 4.63. The research concluded that fracture of a wire rope during dismantling and abrasion (wear and tear of components such as bolts, nuts, or pins) are highly affecting factor on safety during installation and dismantling. Adoption of a preventive maintenance strategy or routine check on the tower crane parts and components could help minimize the probability of occurrence and impact of the safety risk factors on site.
Keywords: Accident, Hazard, Safety risk, Tower crane, Probability, Construction industry.
Privacy Types
Authors: Fareed Majeed Majeed Mohamed 
Published: March 2021

The right to privacy is one of the most problematic rights. In the absence of any consensus on a clear theoretical basis for the concept of privacy; there is hardly a link, reliable, between the various issues and topics, which are included under this right. Privacy claims are used to defend rights that seem quite divergent, such as the right not to be monitored by phone calls, and the right to know what a telecom company keeps of personal data for its customers. The absence of a clear theoretical basis for the right to privacy is exacerbated by the fact that it is exposed to multiple dangers in the era of the massive expansion of the use of the Internet and the development of its applications.
The actuality of material, described in the article, conditioned the urgent necessities of society simply to settle a question about privacy types and their appliance in the society.
Theoretical and legal conversations about the relationship between taws and privacy were investigated in the article. This paper makes a contribution to a forward-looking privacy framework by examining the privacy impacts of six new and emerging technologies. It examines the privacy issues that each of these technologies present and contends that there are seven distinct sorts of privacy. This contextual investigation data propose that a loose conceptualization of privacy might be important to keep up a smoothness that empowers new measurements of privacy to be identified, that will be understood and addressed so as to adequately react to quick technological evolution.
HOW COMMUNICATIVE LANGUAGE TEACHING METHOD ACTIVATE STUDENTS LEARNING PROCESSES IN SECONDARY SCHOOLS IN TANZANIA
Authors: Mollel Irene 
Published: March 2021

Purpose: The purpose of this study was to make a thorough assessment of how communicative language teaching method activates student learning process in secondary schools in Tanzania, particularly Arusha district.
Methodology: This study employed both qualitative and quantitative approaches under case study design and data were gathered through questionnaires and interviews. Data obtained were analyzed using descriptive and thematic analysis.
Findings: Results from the study reveals that, CLT promotes learner’s self-expression abilities using a target language; build learners communicative competences; Create and maintain the interaction between language, learner and the speaker and enhance easy assessment of the learners' practices and development.
Unique contribution to theory, practice and policy CLT method is the best approach to be adopted by all teachers on instructing learners’ new language particularly the English language. The scrutiny of this study will help the policymakers to review the curriculum and add utmost CLT activities to be done in and outside the classroom thus enable students to get more time to practice the language.
Da Proposta a Uma Práxis Psicoterapêutica Tridimensional
Authors: Xavier de Moraes Felipe 
Published: March 2021

RESUMO

A inspiração para este trabalho decorreu da experiência de estágio orientada pelo Professor Álvaro de Pinheiro Gouvêa quando do oferecimento da disciplina “Estágio Básico II”, na PUC-Rio, no decorrer do Primeiro Semestre de 2015. O campo de atuação foi a comunidade adjacente à Universidade, denominada Vila Parque, tendo a presença de uma aluna monitora conduzindo as atividades neste meio.
O ponto de partida foi a inserção no projeto “PIPA” (Produções do Imaginário e Psicologia Aplicada). Perscrutamos sua base teórica, de cunho psicanalítico junguiano, por meio da qual discorremos acerca das significações da introdução do objeto material em psicoterapia e seus desdobramentos no que concerne à denominada interpretação de “objeu”, que abre o trabalho a uma perspectiva lúdica, criativa, instaurando o brincar psicanalítico, para que seja possível tratar com leveza e descontração as próprias neuroses.
Considerando a índole social do projeto, pontuamos a importância de uma iniciativa desta natureza para a formação do futuro profissional da Psicologia e para a própria Psicologia, por favorecer a penetração tanto do psicólogo quanto da Ciência Psicológica em meios nos quais não se fazem presentes com tanta regularidade. Por fim, apresentamos sugestões do ponto de vista do empreendedorismo no intuito de alargar as possibilidades de utilização do que aqui se propõe.
PERAN BADAN KEPEGAWAIAN DAN PENGEMBANGAN SUMBER DAYA MANUSIA KOTA METRO DALAM PENYELENGGARAAN DIKLAT PELATIHAN DASAR TAHUN 2019
Authors: Sismono Herman 
Published: March 2021

Increasing the quality of professionalism, an attitude of dedication and loyalty to the State and the development of insight into governance for Prospective Civil Servants to support the realization of good governance, namely through education and training guidance. Basic Training for 2019 Metro City Government Civil Servant Candidates was held by BKPSDM Metro City through the Human Resources Development Sector. The goal is to determine the role of the Metro City Personnel and Human Resources Development Agency for the implementation of the Class III CPNS Basic Training Class I Year 2019. With this research, it is hoped that the implementation of Basic Training Training can run better.
This study uses a qualitative method. The data sources used were primary and secondary data from interviews, observation and documentation. The data will be analyzed using descriptive analysis method. Based on the data analysis carried out, it was concluded that the Human Resources and Human Resources Development Agency of Metro City as the organizing committee has made every effort to smooth and successful the implementation of Basic Training Class III Class I Year 2019. This can be seen from the implementation of group dynamics activities to make participants become more comfortable during the Basic Training Training; providing modules and stationery to support learning activities during training; The provision of facilities and infrastructure is carried out in accordance with the budget constraints set by the Metro City Government; The determination of competent widyaiswara by submitting the results of the widyaiswara evaluation to the Lampung Province Education and Training Agency.
CONSTRUÇÃO DE MÉTODOS EDUCATIVOS NO ENSINO DE GEOCIÊNCIAS: DESTAQUE PARA O PROGRAMA DE MONITORIA DE GEOLOGIA NOS CURSOS DE GRADUAÇÃO EM GEOGRAFIA
Authors: Damasceno Ferreira Fabrício Leandro , Reis Maria Emília Gomes Vieira , Da Silva Thiago Pinto 
Published: March 2021

O presente trabalho tem a finalidade de apresentar as atividades desenvolvidas, os métodos e recursos utilizados dentro do âmbito do referido projeto de monitoria de ensino vinculado Ã disciplina de Geologia dos cursos de Bacharelado e Licenciatura em Geografia do Departamento de Geografia de Campos/UFF, bem como as experiências obtidas durante os anos de 2016 a 2018. Este tem como objetivo principal a construção de instrumentos que articulassem as relações de ensino e aprendizagem principalmente no que tange os conteúdos teóricos e as atividades práticas da disciplina. A metodologia utilizada para obter os dados necessários foi baseada na (a) confecção de cinco listas de exercícios, (b) disponibilização de horários semanais para a realização de monitorias, (c) Realização de atividade prática de mineralogia, (d) Auxílio ao professor e alunos durante as atividades de trabalhos de campo, (e) criação de meios que facilitassem a comunicação entre professor, monitor e os alunos e (f) reprodução de processos geológicos em laboratório. A partir dos resultados finais, constatou-se que a utilização das práticas educativas dentro do currículo escolar foi fundamental para uma reformulação do quadro de aprovação dos cursos. É preciso valorizar essas atividades e introduzir as práticas metodológicas dentro dos cursos de graduação, pois todos os alunos precisam usufruir dessas ferramentas pedagógicas para a construção do seu conhecimento.
O rozumieniu, jakie niesie filozofia
Authors: Lekka-Kowalik Agnieszka 
Published: March 2021

Na tle współczesnej krytyki filozofii jako dyscypliny naukowej i kierunku nauczania argumentuję, że filozofia jest kulturowo wszechobecna, nieusuwalna i kluczowa dla życia społecznego i indywidualnego. Doskonali człowieka w jego człowieczeństwie i wyznacza ramy rozumienia rzeczywistości, w tym człowieka i jego działania. By to pokazać, odwołuję się do różnych obszarów (wiara, nauka, edukacja, życie jednostki, życie społeczne) i do różnych tradycji intelektualnych. Wydaje się panować zasadnicza zgoda co do wagi filozofii w kulturze. Wyznaczone filozofii role w społeczeństwie i kulturze narzucają warunki, jakie muszą spełniać odpowiedzi dawane na filozoficzne pytania: muszą być one prawdziwe, uzasadnione, ostateczne. Okazuje się wobec tego, że nie każdy kierunek filozoficzny może wypełnić przypisywane filozofii role. Twierdzę, że obiecującym paradygmatem, adekwatnym do poznawczych i społecznych oczekiwań, jest filozofia klasyczna rozwijana w Lubelskiej Szkole Filozoficznej. Natomiast wyjaśnieniem faktu, że mimo uznania wszechobecności i niezbywalności filozofii jest ona współcześnie krytykowana czy ignorowana, jest porzucenie przez filozofię jej oryginalnego powołania do odkrywania prawdy, a zarazem zredukowanie rozumu do rozumu instrumentalnego. Stąd w postmodernistycznej rzeczywistości pełnej postprawd pojawia się nowe zadanie dla filozofii klasycznej: obrona pełni rozumu oraz prawdy i jej miejsca w kulturze.
Stanley Cavell and the Everyday of Thinking
Authors: Ritter Eric 
Published: March 2021

Abstract
In the summer of 2019, the Cavell family, acting as literary executors of Stanley Cavell's estate, designated Eric Ritter to organize and catalogue the masses of books and documents and papers with which Cavell had filled his study. In the process, Ritter found a surprising amount of unpublished work and presents some of it here for the first time. Building on the archival work as well as on recent scholarship, this article presents Cavell's conception of philosophy as the public expression of moral perfectionist practice, for which writing is catalyst, medium, and result. The article then enumerates some consequences that follow from this conception, especially a certain relation of philosophy to the arts and to a notion of philosophical pluralism. It also suggests that key themes in Cavell's work already converse implicitly with ongoing debates about “American Philosophy” and have great potential to do so more explicitly.
Panpsychism: A Response to the Anthropocene Age
Authors: Conty Arianne 
Published: March 2021

Abstract
Panpsychism, the view that the material elements of the universe have mental properties, has until quite recently remained in the periphery of the philosophical mainstream due to its blatant contradiction of normative Cartesian dualities, which divided the world into mental properties (that inhere in human beings alone) and material properties, that are devoid of value and sentience. The recent geological shift to the Anthropocene Age, in which human culture can be found in pesticide resistant mosquitoes and the ozone heavens, has undermined the foundations of Cartesian dualism, making panpsychism a credible alternative. Yet some panpsychists go too far by conflating all distinctions between living and nonliving, human and nonhuman, evolved and made entities. Using Whitehead's process philosophy, this article will defend panpsychism and develop the philosophical criteria of causation, relationality, unity and intentionality to differentiate between natural living forms, natural nonliving forms, and human artifacts.
A Preliminary Study of Laser Directional Solidification for Potential Use in the Repair of Damaged Aviation Turbine Blades
Authors: CUI Aiyong , LIU Haodong , LU Changliang , WEI Huakai , HU Bin 
Published: March 2021

To achieve directional solidification repair of damaged aviation turbine blades, the directional growth repair layer was prepared using a Nd:YAG laser on the surface of superalloy DZ-22. A scanning electron microscope (SEM) was used to observe the microstructure. The element distribution was analyzed and the microhardness of the sample was measured. The results showed that primary dendrite size was proportional to the current and the pulse-width, and inversely proportional to the scanning speed. No obvious macrosegregation of the repair zone was evident. The zone exhibited a finer microstructure than the substrate and had a smaller columnar crystal size, which was approximately two orders of magnitude smaller than the substrate. The micro-segregation between the centers and the edges of the dendrites and in between adjacent dendrites and a decrease in microhardness from the repair zone (455 HV) to the substrate also were observed.
Ownership Structure and Long-Run Performance of French IPO Firms
Authors: Boubaker Sabri , Cellier Alexis , Manita Riadh , Toumi Narjess 
Published: March 2021

Many studies have attempted to explain the long-term underperformance phenomenon of initial public offerings (IPOs). In this paper, we use the specificities of the French market to analyze whether the control-ownership wedge explains IPO long-run performance. Moreover, we investigate whether this relationship is driven by high-tech firms. Using data from a sample of 402 French high-tech and non-high-tech IPOs that went public during 1997-2011, we find that the separation of ownership and control rights of the largest shareholder is negatively associated with long-term performance of French IPOs. This finding indicates that IPOs with disproportional ownership structure underperform other firms in the one- to five-year period following the initial offering. Such separation increases the likelihood that controlling shareholders extract private benefits of control to the detriment of minority shareholders, leading to a low long-term performance. The empirical findings also show that our conclusions are not driven by high-tech firms.