bluuebunny/crossref_metadata_2025 huggingface dataset:
ARQUITETURA MODERNA DE CAJAZEIRAS: A OBRA DA ARQUITETA JOSETE CLAUDINO
Authors: Regina da Silva Carolino Elis , Sobral de Abreu e Lima Isabel , Davi de Melo Mirela , Maria Abreu Gomes de Farias Marjorie , Bella Sarmento Salgueiro Eliziário Matias Emanoella , Priscila de Souza Lima Pollyanna
Published: August 2019

RESUMO: O presente trabalho traça um perfil a ser utilizado como repertório para buscar a aproximação entre as obras da arquiteta Josete Claudino e as tendências modernistas divulgadas pelos principais arquitetos deste movimento. Sem intenção de desprezar a história da arquitetura moderna, mas atenta ao ponto principal desta pesquisa que são as características do movimento modernista no Brasil, com enfoque para a região nordeste, foi construída uma estrutura que parte dos pontos criados por Le Corbusier para a arquitetura moderna ideal. Seguindo uma conexão lógica entre o modernismo internacional até chegar a Cajazeiras, que é o local onde se localiza o objeto de estudo que foi utilizado para análise, percebeu-se, então, a necessidade de uma narrativa que contextualizou desde a chegada dessa escola arquitetônica ao país, com Gregory Warchavchik, passando pelas escolas paulistas e cariocas, adentrando na construção de Brasília apenas para manter a ordem cronológica. O fato que realmente esteve presente no fechamento desta sequência foi a vinda do arquiteto Acácio Gil Borsoi para Recife, e, em seguida, para Paraíba. Pela proximidade temporal e espacial, Gil Borsoi foi determinado como referência para as associações de suas obras, com as analisadas por esta pesquisa. Como resultado, os parâmetros foram elencados e separados por categorias, demonstrando, assim, através de redesenho e fotografias, a presença de características modernas nos projetos elaborados pela arquiteta Josete Claudino, na Cidade de Cajazeiras, Paraíba.

Palavras chave: Arquitetura moderna. Modernismo. Cajazeiras. Josete Claudino.
Measuring Service Facility and Customer Satisfaction of the Luxury Hotels of Khulna
Authors: Rahman S.M. Zahidur , Khan Eijaz Ahmed , Rahman S. M. Towhidur
Published: August 2019

The Hotel industry is an important contributor to the tourism industry of the country. This research is aimed to identify whether the customers of Luxury Hotels of Khulna are satisfied or not, and to what extent they are satisfied in the context of services of luxury hotels in Khulna, Bangladesh, an industrial city and center of tourism attraction. A total number of 19 factors connected with measurement of service facility and customer satisfaction were investigated, analyzed, and evaluated in this regard. The findings indicated, as a whole, that the hotel guests’ perceptions of service facility provided by the hotel industry were lower than their expectations.
Updated Basis Knowledge of Climate Change Summarized from the First part of Thailand’s Second Assessment Report on Climate Change
Authors: Limsakul Atsamon , Kachenchart Boonlue , Singhruck Patama , Saramul Suriyan , Santisirisomboon Jerasorn , Apipattanavis Somkiat
Published: August 2019

Recent evidence and key issues on climate change in Thailand have been presented in the first part of Thailand’s Second Assessment Report on Climate Change (2ndTRAC). The report highlights key findings including 1) a significant country-wide warming of 1.30 oC over the past 48 years (1970-2017); b) significant changes in rainfall patterns at smaller spatial and finer temporal scales; c) significant changes in temperature and rainfall extreme events over the last four-five decades; d) a significant decrease in frequency of tropical cyclones entering Thailand; e) significant rise in sea level in the seas around Thailand at higher rates than the global average; and f) significant projected increases in temperature and rainfall in Thailand by 2100. The first part of the 2nd TARC provides a comprehensive and updated analysis of climate change impacts in Thailand that can be used as an authoritative reference for building understanding and awareness, as well as for designing adaptation and mitigation strategies. Moreover, it can serve as a repository for scientific information to support further research related to impact, adaptation and vulnerability to climate change. Regular assessment of national climate change impacts is essential to informing national policy and to allow policymakers to assess priorities and set meaningful targets in line with the country’s international obligations under the Climate Change Agreement.
Sustainable Transition Models for Municipal Solid Waste Management: A Case Study of Saraburi Provincial Administration Organization, Thailand
Authors: Boonthavornsatien Siwaree , Wiwattanadate Dawan
Published: August 2019

Municipal solid waste (MSW) generation exceeding the capacity of mechanical biological treatment (MBT) plants is a major problem for most municipalities in Thailand. The problem is serious for the Saraburi Provincial Administration Organization (SPAO) as the high daily volumes of MSW sent to the SPAO greatly exceeds the MBT plant capacity of 20 ton d-1. This results in accumulation and ultimately, open-dumping of MSW. Transition from a small (< 50 ton d-1) to a medium-sized cluster (50 - 300 ton d-1) is under consideration to address this problem. Therefore, this study evaluated pre-feasibility information, comparing two possible transition models. Model 1 proposes modification of the existing MBT plant to enlarge its capacity to 50 ton d-1, while Model 2 would require establishing a new medium-sized MBT plant (50 - 70 ton d-1). Results from field data collection as well as mass balance calculation and financial modelling indicate that without additional income from tipping or MSW management fee as well as sale of recyclable materials and scrap metals, both models exhibit negative net present value (NPV) or are not economically feasible due to high initial investment in machinery. However, sensitivity analysis based on an expected fall in future machinery prices indicates that the NPV for both models become positive if prices fall by a minimum 20 %. Due to the much higher initial investment, but the higher capacity with higher separation technology and the higher environmental benefits as well as higher ratings for sustainable development indicators, Model 2 is recommended for a long-term transition. Model 1 can still be recommended for a short - to medium-term transition. Results from in-depth interviews also confirm that Model 1, which offers additional local employment and incomes from selling recyclable materials and scrap metals would be the more feasible option owing to familiarity with the process and its lower initial investment requirement.
Preliminary Study of Distribution and Quantity of Plastic-debris on Beaches Along the Coast at Phuket Province
Authors: Akkajit Pensiri , Thongnonghin Sudarat , Sriraksa Siriporn , Pumsri Supissara
Published: August 2019

The beach sediment samples from Kalim, Tri Trang, and Patong Beaches, Phuket Province, southern of Thailand were collected for preliminary investigation on coastal debris. A total of 9 samples were taken from a 1 x 1 m quadrat at the depth of 5 cm, parallel with the shore during the period of maximum low tides in November, 2018. Microplastics (particles size < 5 mm) were extracted using sodium chloride (1.15 g mL-1) and their characteristics- including abundance (items m-2), weight (g), density (itemsm-2), color and shape- were determined using a stereo microscope. The results showed that microplastic debris varied in abundance from 1 to 35 items m-2 at the three selected beaches, depending on sampling location. In comparison, abundance of macroplastic (> 2.5 cm) and mesoplastic debris (5 mm to 2.5 cm) varied from 1 item m-2 quadrat (Kalim Beach) to 38 items (Patong Beach), 9 items (Tri Trang Beach) and 68 items (Patong Beach) m-2. Blue fibers were predominant among microplastic debris found at Kalim Beach; these are likely to have originated from pieces of rope, safeguard lines and fishing materials. In contrast, microplastic debris found in Patong and Tri Trang Beaches were predominantly green in color. The results of this study provide an overview of the sources of microplastics in coastal environments, which provides a basis for developing long term plastic management plans for these highly popular beaches in Phuket Province.
Utilization of Fruit Waste for Bioethanol Production by Co-cultures of Aspergillus niger and Saccharomyces cerevisiae
Authors: Chamchoi Nutchanat Chamchoi
Published: August 2019

The purpose of this research was to study the effectiveness of simultaneous fermentation offruit waste with co-cultures of Aspergillus niger TISTR 3063 and Saccharomyces cerevisiaeTISTR 5606 in production of ethanol. The effect of fermentation temperature on ethanol yield was also observed. Pomelo and banana peels were selected as substrates and prepared by chopping into small rectangular pieces. Fermentation of batches of fruit waste was carriedout using a 250mL Erlenmeyer flask with glucose as a control. Analysis of the composition of the fruit waste included sugar, pH, TS, VS, ash, moisture, COD and TKN. From the results, it was found that maximum yields of 90.71% and 104.90% for pomelo and banana peel, respectively, were achieved at a temperature of 40°C within 24 h. The analysis also showed that fermentation temperature affected ethanol yield. When the fermentation temperature was raised from 30°C to 40°C, maximum ethanol yield from pomelo peel fermentation with10% of inoculum was increased from 73.86% to 90.71%, significant at p-0.05 Maximum yield from banana peel fermentation showed a similar trend. This study establishes the potential for upgrading fruit wastes such as pomelo and banana peels as high value substrates for ethanol production. Pomelo peel in particular shows high potential as a substrate for ethanol fermentation at 40°C for 24 h, with inoculum of 10% (w/w) of each fungus and yeast.
Meningkatkan Hasil Belajar Siswa dengan Model Snowball Throwing pada Pokok Bahasan Penyelesaian Pertidaksamaan Kuadrat
Authors: Ama Ferdinandus Tamo , Sartati Setiawan Budi
Published: August 2019

[Title: Improving Student Learning Outcomes with the Snowball Throwing Model in the Subject of Solving Inequality Squared] The problem raised in this study is the low student learning outcomes. The research objectives are to improve student learning outcomes. The researcher wants to solve this problem by applying the snowball throwing model on the subject of solving the inequality squared in class X IPA 1 Manda Elu Private High School. This type of research is classroom action research (CAR) with two planned cycles. For each cycle consists of five stages, namely planning, implementing actions, observing, evaluating, and reflecting. The research subjects were teachers (researchers) and students of class X IPA 1 at Manda Elu Private High School. Collecting data in this study using written tests and observation sheets. The research data were analyzed descriptively-quantitative for test result data and descriptive-qualitative data for observation. The results showed that student learning outcomes improved, this can be seen from the percentage of classical completeness that is the first cycle of 54.3% increased in the second cycle 80%. From the results of the first cycle and second cycle increased, which means that more and more students received grades ?65 (KKM). Based on the results of the study it can be concluded that the application of the snowball throwing model on the subject of solving the inequality squared can improve learning outcomes of class X students of Manda Elu Private High School.
Implementasi Model Pembelajaran Think Pair Share untuk Meningkatkan Hasil Belajar Siswa
Authors: Bobo Petrus Seingo
Published: August 2019

[Title: The Implementation of Think Pair Share Learning Models to Improve Student Learning Outcomes]. The purpose of this study was to improve the learning outcomes of Class VII Students of SMP Negeri 1 Loura, the subject of Linear One Variable Equation through the Think Pair Share (TPS) Learning model. This type of research is classroom action research that is reflective by taking certain actions in order to improve and enhance classroom learning practices in practice and professionally. The subjects of the research were VII grade students of SMP Negeri 1 Loura for the Academic Year 2017/2018, amounting to 43 people. The data collection tools used were: tests and observations. Data analysis techniques were obtained from the teacher, student activity data and test results. The indicator of the success of this class action research is said to be successful if it reaches classical completeness of 75% with the Minimum completeness Criteria (KKM) 70. The results obtained, in the first cycle test students who completed reached 62.79% and incomplete reached 37.21%. While the second cycle of students who completed tests reached 81.39% and 18.61% of incomplete completed. And the average results of observations in the first cycle for the first meeting is 2.25 and for the second meeting is 2.63, and the results of observations in the second cycle for the first meeting is 3.00 and for the second meeting is 3.25. Based on the results of the study it can be concluded that the implementation of the TPS learning model can improve student learning outcomes.
Persepsi Guru dan Peserta Didik terhadap Proses Pembelajaran Fisika Berdasarkan Kurikulum 2013
Authors: Suluh Melkianus , Jumadi Jumadi
Published: August 2019

[Title: Perception Of Teachers And Students On The Physical Learning Process Based On Curriculum 2013] This study aims to determine: (1) the perception of physics teachers to apply a scientific approach, (2) the perceptions of students on the physics learning process carried out by teachers, (3) the relationship between students' perceptions and the ability of teachers to carry out physics-based learning scientific approach. This research is a survey research using a descriptive correlational approach. The research sample included 18 physics teachers and 494 students spread across 10 Public High Schools in Yogyakarta City which were taken using a purposive sampling technique. Data collection uses questionnaires from teachers and students and observation sheets. The analysis technique uses descriptive analysis and Spearman correlation analysis. Research Results (1) The teacher has a very positive perception of the implementation of a scientific approach in scientific learning; (2) Students give a positive response to the process of physics learning carried out by the teacher; (3) There is a positive and significant relationship between the perceptions of students and the ability of teachers to carry out physics learning based on the scientific approach.
Meningkatkan Prestasi Belajar Siswa Menggunakan Metode Demonstrasi Pada Materi Listrik
Authors: Idris Idris
Published: August 2019

[Title: Improving Students' Learning Achievements Using Demonstration Methods on Electrical Material]. This study aims to improve the learning achievement of class VI Elementary School students in electrical materials using the demonstration method. This study is a Classroom Action Research (CAR) with the research subjects being class VI students of Sandik 2 Elementary School totalling 19 students. Formative test instruments on electrical material and observation sheets were used to collect data on student learning achievement and implementation of learning using the demonstration method. The results showed that 80% of the total students had reached 70% of the level of mastery of the concepts given. The results of the observations also show an active and well-functioning learning atmosphere. Based on the results of the study it can be concluded that the use of demonstration methods can improve student learning achievement on electrical material.
Penggunaan Media Gambar dalam Meningkatkan Kemampuan Membaca Permulaan pada TK PGRI Jatisela
Authors: Hajar Siti
Published: August 2019

[Title: The Use of Image Media in Improving Initial Reading Ability at Jatisela PGRI Kindergarten]. This study aims to determine the extent to which the use of image media can improve the initial reading ability in Group B of the Jatisela PGRI Kindergarten Students in the 2017/2018 Academic Year. This study is a Classroom Action Research with qualitative-quantitative data analysis techniques. The subjects of the study were 23 students of group B of the Jatisela PGRI Kindergarten. The results of data analysis show that the use of image media can (1) improve students initial reading ability, (2) make learning activities more active and fun, (3) the students initial reading ability after the second cycle increases with a percentage of 95.65%. Based on the results of the study it can be concluded that the use of image media can improve the students initial reading ability of group B Jatisela PGRI Kindergarten Sesela Village, Gunungsari, West Lombok 2017/2018 Academic Year.
Meningkatkan Kemandirian Anak Menggunakan Metode Bermain Peran pada Kelompok A TK PGRI Jatisela
Authors: Maryam Siti
Published: August 2019

[Title: Improving the Students Independence using Role Playing Methods in Group A TK PGRI Jatisela]. This study aims to improve the students independence through role-playing learning with teaching aids and tell stories in kindergarten group A in PGRI Jatisela, Sesela, Gunungsari, West Lombok. This research is a Classroom Action Research (CAR) with a qualitative approach because in this study prioritizes descriptive-analytic to solve the concepts in it, not using numerical-statistical concepts with 21 research subjects. The students independence observed in this study using the observation sheet were the students independence in wearing shoes and wearing clothes. The results showed that there was an increase in students' independence after the learning cycle. The students independence in wearing shoes (9.5% in cycle I) and wearing clothes (4% in cycle I) increase to 100% in cycle II. Based on the results, it can be concluded that role-playing learning with teaching aids and tell stories in group A the Jatisela PGRI Kindergarten, Sesela, Gunungsari, West Lombok can increase students independence in wearing shoes and wearing clothes.
Isolation and characterisation of irinans, androstane-type withanolides from Physalis peruviana L.
Authors: Stein Annika , Compera Dave , Karge Bianka , Brönstrup Mark , Franke Jakob
Published: August 2019

Withanolides are steroidal lactones widespread in Nightshade plants with often potent antiproliferative activities. Additionally, the structural diversity of this compound class holds much potential for the discovery of novel biological activity. Here, we report two newly characterised withanolides, named irinans, from Physalis peruviana with highly unusual truncated backbones that resemble mammalian androstane sex hormones. Based on biomimetic chemical reactions, we propose a model that links these compounds to withanolide biosynthesis. Irinans have potent antiproliferative activities, that are however lower than those of 4ß-hydroxywithanolide E. Our work establishes androwithanolides as a new subclass of withanolides.
Fluorinated azobenzenes as supramolecular halogen-bonding building blocks
Authors: Nieland Esther , Weingart Oliver , Schmidt Bernd M
Published: August 2019

ortho-Fluoroazobenzenes are a remarkable example of bistable photoswitches, addressable by visible light. Symmetrical, highly fluorinated azobenzenes bearing an iodine substituent in para-position were shown to be suitable supramolecular building blocks both in solution and in the solid state in combination with neutral halogen bonding acceptors, such as lutidines. Therefore, we investigate the photochemistry of a series of azobenzene photoswitches. Upon introduction of iodoethynyl groups, the halogen bonding donor properties are significantly strengthened in solution. However, the bathochromic shift of the π→π* band leads to a partial overlap with the n→π* band, making it slightly more difficult to address. The introduction of iodine substituents is furthermore accompanied with a diminishing thermal half-life. A series of three azobenzenes with different halogen bonding donor properties are discussed in relation to their changing photophysical properties, rationalized by DFT calculations.
EDAS METHOD FOR MULTIPLE CRITERIA GROUP DECISION MAKING WITH PICTURE FUZZY INFORMATION AND ITS APPLICATION TO GREEN SUPPLIERS SELECTIONS
Authors: Zhang Siqi , Wei Guiwu , Gao Hui , Wei Cun , Wei Yu
Published: August 2019

In this paper, we construct picture fuzzy EDAS model based on traditional EDAS (Evaluation based on Distance from Average Solution) model. Firstly, we briefly review the definition of picture fuzzy sets (PFSs) and introduce the score function, accuracy function and operational laws of picture fuzzy numbers (PFNs). Then, we combine traditional EDAS model for MCGDM with PFNs. In our model, it’s more accuracy and effective for considering the conflicting attributes. Finally, a numerical example for green supplier selection has been given to illustrate this new model and some comparisons between EDAS model with PFNs and PFWA, PFWG aggregation operators are also conducted to further illustrate advantages of the new method.
Diaporthe species in south-western China
Authors: Long Hui , Zhang Qian , Hao Yuan-Yuan , Shao Xian-Qiang , Wei Xiao-Xing , Hyde Kevin D. , Wang Yong , Zhao De-Gang
Published: August 2019

Three strains of the genusDiaporthewere isolated from different plant hosts in south-western China. Phylogenetic analyses of the combined ITS,β-tubulin,tef1 and calmoudulin dataset indicated that these strains represented three independent lineages inDiaporthe.Diaporthe millettiaesp. nov.clustered withD. hongkongensisandD. arecae,Diaporthe osmanthisp. nov.grouped withD. arengae,D. pseudomangiferaeandD. perseaeandDiaporthestrain GUCC9146, isolated fromCamellia sinensis, was grouped in theD. eresspecies complex with a close relationship toD. longicicola. These species are reported with taxonomic descriptions and illustrations.
Nomenclatural changes in Coleus and Plectranthus (Lamiaceae): a tale of more than two genera
Authors: Paton Alan J. , Mwanyambo Montfort , Govaerts Rafaël H.A. , Smitha Kokkaraniyil , Suddee Somran , Phillipson Peter B. , Wilson Trevor C. , Forster Paul I. , Culham Alastair
Published: August 2019

A synopsis of the generaColeusLour,EquilabiumA.J.Paton, Mwany. & Culham andPlectranthusL’Hér. (Lamiaceae, Tribe Ocimeae, Subtribe Plecranthinae) is presented. Generic delimitation follows a recently published molecular phylogeny which identifiedColeusas the sister of the remaining genera of Subtribe Plectranthinae;Plectranthusas sister toTetradeniaBenth. andThorncroftiaN.E.Br., and a separate phylogenetically distinct genusEquilabiumcomprising species previously placed inPlectranthus. In this treatment, 294 species ofColeus, 42 ofEquilabium, and 72 ofPlectranthusare recognized. All but one of the combinations inEquilabiumare new as only the genus and type species have been previously published. Two-hundred and twelve names are changed to combinations inColeusfromPlectranthus,PycnostachysHook. andAnisochilusBenth.
Family and world: the german family business in the global market in the second half of the 20 th century
Authors: Dingliang Fan
Published: August 2019

L’entreprise familiale a exercé une grande influence sur les marchés allemands et internationaux. Bien que les chercheurs ne puissent encore parvenir à un accord sur la définition de l’entreprise familiale, sa caractéristique la plus importante apparaît clairement dans le modèle des trois cercles et grâce à la théorie de la coévolution. L’analyse de la relation entre la famille et l’entreprise au sein d’une entreprise familiale s’impose comme étant nécessaire. Dans le processus de mondialisation croissante qui caractérise la seconde moitié du XX e  siècle, l’entreprise familiale, comparée à celle des entreprises non familiales, a dû faire face à un défi inimaginable venu de l’étranger et affronter une situation plus complexe. La propriété et le contrôle sont devenus tout naturellement une sorte de film classique, comme un film sur la famille. En effet, l’internationalisation de l’entreprise familiale constitue exactement un processus de reconstruction dans le sens moderne du terme. S’agissant de la relation entre le poids des entreprises familiales et le degré d’internationalisation, on ne peut tirer aucune conclusion qui fasse l‘unanimité. En RFA, il y a eu de grandes différences entre les effets de la mondialisation sur les grandes entreprises familiales d’une part, et les petites et moyennes entreprises d’autre part. Les petites et moyennes entreprises familiales ont adopté des stratégies variées pour relever le défi de la mondialisation. Pour elles, la mondialisation signifiait opportunité, pression ou ne les concernait pas. En revanche, plusieurs tendances communes sont apparues dans les grandes entreprises familiales. Depuis les années 1970, elles ont ouvert progressivement leur capital à leur personnel et à des partenaires extérieurs à la famille, changé la structure de leur actionnariat et la forme légale de leur organisation, afin de s’adapter à un marché mondial en pleine évolution.
Computer Simulation and Investigations of the Roof Mount Photovoltaic System
Authors: Sapundzhi Fatima
Published: August 2019

The interest in the renewable energy sources is increasing due to the depletion of the conventional energy sources and the environmental pollution. In this paper we present a computer simulation and investigations of the roof mounted photovoltaic system. The results of the generated power of the 5kW built-in photovoltaic system by months over a period of 5 years are presented. Depending on the meteorological conditions, the investigated photovoltaic system generates year-round energy necessary for the needs of the household
Le pentecôtisme : nouveau facteur de mobilité pour les populations tsiganes ?
Authors: Peyron Julia
Published: August 2019

Les motivations au voyage sont de plusieurs ordres au sein des populations tsiganes. Trois de celles-ci interviennent plus significativement, il s’agit des motivations d’ordre familial (descendance, alliances, réseaux, décès, proximité géographique), d’ordre économique (par la nécessité traditionnelle de se déplacer vers la clientèle) et d’ordre religieux. Ces impératifs organisent donc les déplacements. Il apparaît aujourd’hui que les mobilités tsiganes sont bouleversées, ceci en raison des transformations qu’a connu notre société dans les dernières décennies (urbanisation galopante, complexifications administratives), mais c’est principalement le problème posé par le stationnement qui affecte la mobilité tsigane.
Rejets éternels : les collectivités locales face aux Tsiganes et aux nomades
Authors: Liégeois Jean-Pierre
Published: August 2019

Les pages qui suivent présentent une typologie des attitudes des collectivités locales face aux Tsiganes et nomades, et une analyse de la fonction que remplit actuellement pour ces collectivités l’ouverture « d’aires de stationnement » pour les nomades. On verra que, dans l’ensemble, si la politique des pouvoirs publics se veut assimilatrice depuis peu (comme nous l’avons montré dans Pluriel, n°19, 1979, et dans Esprit de mai 1980), celle des autorités locales en reste à cette autre forme de négation qu’est le rejet, ou la réclusion dans des terrains contrôlés.
Ensure Hierarchal Identity Based Data Security in Cloud Environment
Authors: Kaushik Shweta , Gandhi Charu
Published: August 2019

Cloud computing has emerged as a new promising field in the internet. It can be thought as a new architecture for the next generation of IT enterprises. It allows the user to access virtualized resources over the internet which can be dynamically scaled. Here, the owner's data is stored at a distributed data centre, which are responsible for its security constraints such as access control and data transmission to user. As the owner does not have physical access on their own data, the data centres are not trustworthy, this resulted in the cloud data security demand. Today, many cloud service providers (CSPs) are using the asymmetric and public key cryptography (PKG) for authenticating and data security purposes using the digital identity of the user. To this end, this article focuses on cloud data storage and its delivery to authorized user. For this purpose, a hierarchal identity-based cryptography method is used for data security and checking the data integrity, in order to make sure that there is no alteration or modification done by a malicious attacker or CSP for its own benefit.
Examining the Antecedents of Cloud Service Profitability
Authors: Herzfeldt Alexander , Floerecke Sebastian , Ertl Christoph , Krcmar Helmut
Published: August 2019

In a fast growing but highly competitive market, some cloud service providers are significantly more profitable than others. In particular, numerous providers struggle to scale their cloud service delivery up from a one-time, project-based co-creation model to a platform delivery model, building on reusable resources. This study builds on the service (-dominant) logic and the resource-based view to develop a model of cloud service profitability. It is proposed that profitability results from the ability to manage costs of customer-specific value co-creation and efforts to build reusable resources, which facilitate future customer engagements. The results of a survey with 99 cloud providers show that value co-creation costs indeed mediate the effects of facilitation capability and complexity on cloud service profitability. However, facilitation capability has both direct and mediated effects on profitability. The results provide insights on which factors influence cloud service profitability and which resources should be established before offering a cloud service to future customers.
Gender Differences in Cognitive Loads, Attitudes, and Academic Achievements in Mobile English Learning
Authors: Yu Zhonggen
Published: August 2019

Studies on gender differences in mobile English learning are in their initial stages. College English IV, designed by a number of professors and engineers in a university in China, serves as a mobile English learning platform. This study aims to determine gender differences in cognitive loads, attitudes, and academic achievements in English language learning assisted with this mobile English learning platform. Through a mixed research design, 79 randomly selected participants join the research, together with interviews and posts to collect qualitative data. Cognitive loads, attitudes, and academic achievements are measured through related scales to collect quantitative data. It is concluded that there are significant gender differences in cognitive loads, attitudes, and academic achievements in English language learning assisted with the mobile learning platform. Future research on gender differences in mobile English learning should also examine relationships between gender differences, learner motivation, achievement goals, and learning outcomes.
Sectionalizing and Redundancy of the 0.38 kV Ring Electrical Network
Authors: Vinogradov Alexander , Vinogradova Alina , Bolshev Vadim , Psarev Alexander Ivanovich
Published: August 2019

The use of power line sectionalizing and power line redundancy in 0.38 kV networks entails the need to take into account the fact that currents and voltages can vary significantly at different points of the network. The article proposes a mathematical model to solve this problem. The mathematical model is based on the method of phase coordinates. Using mathematical modeling, the article determines the voltages and currents in the sections of the backup line after the automatic load transfer switch is activated. The article also proposes an improvement in the scheme of the power line sectionalizing unit. The sectionalizing unit scheme is suggested to be modified with a bypass circuit and the installation of a voltage indicator for signaling the voltage presence on the lower contacts of the switch.
The Role of Self-Regulation and Structuration in Mobile Learning
Authors: Viberg Olga , Andersson Annika
Published: August 2019

The roles of self-regulation and structuration in mobile learning are poorly understood. This study therefore examines these aspects in relation to the design and use of mobile technology in an online language learning setting. The online self-regulated learning (SRL) instrument was adopted to measure students' perceived level of self-regulation. Structuration Theory was applied as the theoretical lens for understanding students' technology-mediated learning practices. The results show that several factors defining learners' level of self-regulation were correlated with their mode of structuration. The analysis indicates that students' SRL characteristics are correlated with their structures regarding their technologies-in-practice and their practical assumptions about effectiveness in learning. An implication for practice is that students' SRL dimensions need to be taken into account when designing educational software for mobile technology. For research, this study has demonstrated the explanatory power of ST and how students' structures are related to their SRL characteristics.
The Use of Social Media in Knowledge Sharing Case Study Undergraduate Students in Major British Universities
Authors: Al-Shibly Motteh Saleh
Published: August 2019

This study aims to investigate how the social media tools can help the exchange of knowledge between university students to build a knowledge sharing culture. The purpose of this study is to examine the influence of individual and organizational factors, social media technologies (SMT) and knowledge sharing factors, thus predicting the online user behavior towards social media knowledge-sharing. Different methods such as (PLS) were used to analyze the study results in order to consider the influence of all constructs on the framework simultaneously. Therefore, a (157) online questionnaires were collected from undergraduate students in major British universities. The results reveal that knowledge sharing behavior had five positive factors: mutual trust, reciprocity, eWOM quality, perceived usefulness and perceived online attachment motivation. Practical implications, limitations and directions for future research are also discussed.
Factors Affecting E-Commerce Adoption by Handicraft SMEs of India
Authors: Yadav Rohit , Mahara Tripti
Published: August 2019

This study empirically investigates the factors affecting e-commerce adoption by small and medium-size enterprises producing handicrafts in India. The study is motivated by the fact, that even though the handicraft sector plays a vital role in the Indian economy in terms of exports and employment, it has not adopted e-commerce as one of the prominent sales channels. Survival in this new economy requires handicraft organizations to learn and adopt new technologies. Those who cannot or do not adopt this new business practice will become obsolete and will be left behind. This study proposes and utilizes technological, organizational, environmental and strategy model based on TOE (Technology, Organization and Environment) model. From a survey of 163 Indian small and medium-size enterprises, findings reveal that awareness, human resources, strategy and market forces e-readiness are the prime influencing constructs towards adoption of e-commerce by Indian small and medium-size enterprises.
Evaluating the Thermal Conductivity and Q-Max Properties of Quick Dry Inner Wears
Authors: Wang Wen Yi , Yim Hin Heng Lois , Kan Chi Wai , Diswat Jaruwan , Krajangpo Wipada , Rungruangkitkrai Nattadon , Mongkholrattanasit Rattanaphol
Published: August 2019

Thermal property is an importance factor of quick dry inner wears. This study aims to evaluate the thermal property of women’s quick dry inner wears in the market with different market position (Brand A: online brand; Brand B: general market and Brand C: youth market). The thermal property studied in this paper included (i) thermal conductivity and (ii) Q-max value (warm/cool feeling). The thermal conductivity and Q-max values were measured according to the standard of KES-F7. Thermal conductivity analysis showed that Brand B was the optimal product, while Q-max results indicated that both Brand B and Brand A had the best product in terms of quick dry property.
Characteristics of Abalone Mussel Shells (Halioitis asinina) with Calcination Temperature Variations as a Basic Material for Synthesis of Carbonated Hydroxyapatite
Authors: Permatasari Hestining Ajeng , Supii Apri I. , Suparta Gede Bayu , Yusuf Yusril
Published: August 2019

Carbonated Hydroxyapatite (CHAp) is hydroxyapatite (HAp) substituted with carbonate ions that are similar to natural bone inorganic constituents. CHAp based on abalone mussel shells (Halioitis asinina) with calcination temperature variations were successfully synthesized using the precipitation method. Abalone mussel shells powder was calcined at 650, 800 and 1000°C for 4 hours, that aimed to obtain calcium oxide (CaO) which has the best characteristics as a source of calcium (Ca) in the CHAp synthesis process. The effect of calcination temperature variations on the characteristics of abalone mussel shells powder was investigated and characterized using Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), and Energy Dispersive X-Ray Spectroscopy (EDX). In this study, calcination temperature variations affected the crystalline phase and the percentage of calcium (Ca) and carbonate (CO32-) ions. The results of the characterization show that the calcination temperature at 1000°C is the optimum temperature to obtain CaO powder as a source of calcium (Ca) in CHAp synthesis.
Synthesis and Characterization of Membranes from Cellulose Acetate Derivatives of Corn Husk
Authors: Setyaningsih Lucky , Priambodo Harry , Erfiano Inggar , Agung Sandy , Utomo Rizqi Khrido
Published: August 2019

In this study membranes synthesized using cellulose acetate through chemical crosslinking process with polyethylene glycol (PEG) and dimethylformamide (DMF) acts as crosslinker agent. Cellulose is derived from corn husk, which known as agricultural waste that has potential sources of cellulosic fibers in producing cellulose acetate. The prepared membranes of corn husk cellulose were characterized by Fourier transform infrared and X-ray diffraction. The effect of various additives and additives concentration were investigated to obtain swelling degree and tensile strength of membranes. Result showed that highest swelling degree of 236% was achieved in the condition of DMF/S 10% w/w. This condition produce cellulose acetate membrane with thickness of 0.074 mm, tensile strength of 27.5kg/cm2 and elongation of 3.5%.
Effect of Acidic Activated Natural Zeolite on Characteristics of Bio Oil Derived from Pinus Merkusii’s Cone Pyrolysis
Authors: Zulkania Ariany , Chafidz Achmad , Maharani Putri , Ade Putri Sinthya
Published: August 2019

Due to diminishing fossil fuel, energy alternative availability becomes very crucial. Bio-oil is one of the alternative energy sources obtaining from the biomass pyrolysis process. This study's aim is to determine the effect of temperature and the addition of catalysts in the pyrolysis process. The catalyst was made of natural zeolite which was activated with an H2SO4 solution of 0.5 N and then heated at 350 °C for 12 hours. The pyrolysis of dry pine cone powder was run in a fluidized bed reactor enclosed by a furnace at a heating rate of 15 °C/min and residence time for 3 hours. From the existing variations, the largest bio-oil yield i.e. 34.28% was obtained from non-catalytic pyrolysis at the temperature of 500 °C, however, the bio-oil conceived high acids. On the other hand, the bio-oil comprised high phenolics and aromatics were generated from catalytic pyrolysis with 5% wt catalyst at a temperature of 500 °C. Eventually, the bio-oil from Pinus Merkusii cone has the potential to be biofuel and biochemical materials.
Efflorescence Processes in Exterior Wall Surface of Buildings
Authors: Vinnichenko Varvara , Ryazanova Viktoriya A. , Gabitov Azat I. , Udalova Ye. A. , Salov Aleksander S.
Published: August 2019

Alkali hydroxide and alkali salt possessing high solubility are considered to be one of main reasons for efflorescence occurrence in exterior walls of buildings made from solid masonry units. Analysis of alkaline attack on efflorescence processes in the surface of exterior walls of buildings is presented herein. Volumetric changes in solid phase materials in the course of alkali hydration and carbonation reactions under efflorescence are calculated by the proposed procedure. The indicated processes are confirmed by laboratory simulation and by field studies of ceramic block and lime brick masonries, and vibropressed concrete blocks within the Republic of Bashkortostan.
Investigation of Internal Stresses in Thin Layer Oxide Coatings on Aluminum Alloys
Authors: Kuznetsov Yuri A. , Kolomeichenko Aleksandr V. , Goncharenko Vladimir V. , Kravchenko Igor Nikolaevich
Published: August 2019

Among physical and mechanic properties of coatings the internal stresses are of special interest. Internal stresses include stresses which exist and are counterbalanced within a rigid body in cases when there is no external action which caused them. In coatings obtained on the basis of nickel, chrome they can decrease the adhesive strength, cause cracking, peeling, anticorrosion properties deterioration. But the definite level of internal stresses leads to increase of hardness and coatings wear resistance and also facilitates porous coatings obtaining. The results of theoretical and experimental investigations of the internal stresses that appear in oxide ceramic coatings formed by plasma-electrolytic oxidation (PEO) on aluminum surfaces are presented.
Research Methods of Making Glass and its Physico-Chemical Properties
Authors: Baranova-Shishkova Lilia I. , Simpolskaya Karina S. , Zvonareva Elena , Goncharenko Vladimir V.
Published: August 2019

This article discusses the modern methods of physico-chemical properties of glass manufacturing, through the use of a wide spectrum of glass-forming. Description of the implementation of the staged methods of chemical-technological processes of silicate formation, implying the lowest energy consumption, in connection with the transition to the processing of secondary raw materials.
Search for Ranking Approaches of Expanded Clay Concrete Quality Criteria
Authors: Kroviakov Sergii , Volchuk Volodymyr , Zavoloka Mykhailo , Kryzhanovskyi Vitalii
Published: August 2019

The article is devoted to ranking of quality criteria for multiparameter, multicriteria production technology of lightweight concrete depending on their significancy using fractal formalism. The proposed approach allows to determine the operation area of stability of the physicomechanical properties of expanded clay concrete with preset technology parameters depending on the size of their self-similarity area and to control the technological process relative to the determine parameter - watertightness. For concrete thin-walled hydraulic structures watertightness is one of the main indicators of quality, ensuring the durability of structures. In the experiment conducted on 15 points optimal plan, 3 factors of the composition varied: sulfate-resistant portland cement, silica fume, water reducing admixture. Possibility of ranking the indicators of W/C and physicomechanical properties of expanded clay concrete depending on the variation of concrete mixture components is shown. Stability of physical and mechanical properties of expanded clay concrete is necessary to ensure its durability and accordance with design requirements. Expanded clay concrete similar to those described in this article can be used in reinforced concrete shipbuilding to reduce weight of structures.
Calculation Models of the Bearing Capacity of Span Reinforced Concrete Structure Support Zones
Authors: Karpiuk Vasyl M. , Syomina Yulia A. , Antonova Diana V.
Published: August 2019

Experience gained in design, erection and operation of span reinforced concrete structures has proved that practically all of them are subject to complex stress-strain state. At that, the researchers pay considerable greater attention to calculation of strength, deformation analysis and determination of crack resistance in normal cross-sections than to calculation of their support zones, including oblique sections, which results are generally taken into account for determining the section dimensions and the quantity of the cross reinforcement.
Efficiency of the Alkali-Activated Cement Concretes for Sea Construction
Authors: Kryvenko Pavlo V. , Petropavlovskyi Oleh , Kovalchuk Oleksandr Yuriyovich , Cao Hai Lin , Weng Lu Qian
Published: August 2019

There are shown studies on development of the alkali-activated slag cements and concretes using Chinese raw materials. Such cements and concretes are able to provide high performance characteristics of materials and constructions under exposure of sea climate. The tests had been done for compliance with the requirements set in the national standards of P.R.China and were determined characteristics of strength, wet conditions shrinkage, freeze-thaw resistance, corrosion and weather resistance, biodegradability, water permeability, bond strength between concrete and reinforcement. The obtained positive results of tests allowed to recommend them for a pilot-scale production of the developed materials in sea construction for protection of the sea coastal line in the P.R.China.
Stress-Strain State of Reinforced Anisotropic Elements of Round and Annulus Section
Authors: Chekanovych Mechyslav , Romanenko Svetlana , Andriievska Yanina
Published: August 2019

The paper is dedicated to the analytical determination of stress and deformation parameters of reinforced anisotropic elements of round and annulus section, including columns, risers, supports, pipes, piles. The exact solution of stress-strain state equations for cross-sections of structures within initial data is performed on the basis of recurrence formula for integral of differential binominal.
Influence of Organic Matters on the Calcium Carbonate Decarbonization Process
Authors: Vinnichenko Varvara , Riazanov Anton , Riazanov Aleksandr
Published: August 2019

Pure calcium carbonate, chalk, and coal wastes are taken as starting materials. The Gibbs energy of calcium carbonate decarbonization reactions is calculated. By the method of thermodynamic analysis, the effect of carbon and its gasification products on the calcium carbonate decarbonization process is investigated. The intensifying effect of organic matter during heat treatment of calcium carbonate is shown. In addition to carbon, the decarbonization reactions are influenced by gases evolved as a result of the gasification of the organic part of the coal waste. It is theoretically proven that the organic component of coal waste contributes to lowering the temperature of the onset and end of the decomposition of calcium carbonate. To confirm the theoretical background, experimental studies of the behavior of mixtures during heating have been carried out. The effect of organic matter on decarbonization of pure calcium carbonate and chalk has been studied. Thermograms have shown that less caloric energy is required for the decarbonization of chalk than for the decarbonization of pure CaCO3. Organic transformations occur in the material layer, which contributes to intensive heat transfer. The products of thermochemical transformations of the organic mass increase the efficiency of the process of decarbonization of calcium carbonate using the waste of coal enrichment in the composition of the raw mix. The organic component of the waste not only reduces the amount of heat energy expended on the endothermic process of calcination, its presence in the raw material mix reduces the temperature of the process of calcination as pure calcium carbonate and chalk.