bluuebunny/crossref_metadata_2025 huggingface dataset:
Un autre regard sur les écrits des élèves : évaluer autrement
Authors: Bucheton Dominique , Chabanne Jean-Charles
Published: April 2018

Les outils d'évaluation de l'écrit les plus courants aujourd'hui sont conçus pour donner à l'élève le moyen de mesurer le degré de conformité ou de déviance de ses écrits par rapport à diverses nonnes graphiques, phrastiques, textuelles, discursives... Dans cette perspective, les points de repère sont fournis par les pratiques sociales de référence, qu'elles soient celles du monde extrascolaire, ou celles de l'école elle-même. C'est un outil précis et efficace de révision et de normalisation des textes destinés à être mis en circulation.

Mais ce modèle ne peut être appliqué à ce que nous avons appelé des écrits intermédiaires et réflexifs. Ces formes d'écrit qui ne peuvent être reportées à un modèle social, ce sont avant tout des écrits de travail personnels, destiné à lancer, accompagner et stimuler l'activité réflexive au cours de tâches scolaires. Dans ce cas, le but de l'évaluation n'est donc pas de faire corriger le texte, mais bien de d'interpréter la dynamique de l'écriture pour la relancer.

Ce qui sera présenté est une proposition d'un modèle d'évaluation de ce type d'écrit, destiné à aider les enseignants à porter un regard différent sur ces écrits de travail. Nous retenons trois questions qui nous paraissent centrales :

-Comment se situe l'élève dans son écrit ?

-De quoi parle le texte et quels sont ses enjeux (ses valeurs) ?

-Comment apparait et évolue la prise en compte des normes ?

Nous proposons d'observer quelques indicateurs linguistiques dans les textes produits, non pas pour repérer le degré de maitrise des codes et procédures d'écriture qu'elles traduisent mais pour repérer quels sont les obstacles qui bloquent le développement de l'écriture, obstacles que nous cherchons sur trois plans : cognitif, langagier et psycho-affectif (du côté des idées, du côté des formes d'expression, du côté des émotions). Se trouvent-ils du côté du rapport du sujet à l'écriture : son identité de sujet écrivant, ses savoirs sur les fonctionnements de l'écriture et de la langue écrite ? Ou du côté de son rapport à l'école : son désir d'apprendre, sa compréhension de ce qu'on y fait, de ce qu'on lui demande ? Nous cherchons comment agir avec les élèves qui sont en difficulté parce qu'ils ne s'autorisent pas à penser, à agir par eux-mêmes dans le contexte scolaire. Nous cherchons comment nous pouvons les aider à être actifs, inventifs, créateurs de solutions inédites, capables de mobiliser des ressources langagières plus élaborées.
Reformulations écrites et orales, part du cognitif, part du linguistique
Authors: Boré Catherine
Published: April 2018

Written and oral reformuiations ; cognitive part, linguistic part.

Catherine Boré, Laboratoire MoDyCo, Université Paris X, IUFM de Versailles.

This article relies on part results of a current research (IUFM de Versailles). It wonders about the cognitive contribution of written and oral reformulations that came along with the writing of a «synthesis » in a geometry class in CM2 (1 1 years old). The initial hypothesis postulated that one can await from the reformulation process an improvement of the writings correlated with comprehension. The analysis of successive written versions show much more complicated results : where the comprehension seems certain orally, the written language reveals its fragility, among others in the use of prepositions. The rewriting reveals this as well as it is responsible for new cognitive obstacles.
A compounding analysis of plural reduplication
Authors: Tatsumi Yuta
Published: April 2018

The paper offers an analysis of plural reduplication in Japanese. I argue that reduplicated nouns are antonym compounds that have two opposite values of number features. Each member of a reduplicated noun is associated with an interpretable valued number feature, and values of the number features must not be identical to each other. I propose that two opposite values on the top node of a reduplicated noun becomes an uninterpretable valued feature in Japanese. As a result, reduplicated nouns in Japanese are not specified as singular or plural because uninterpretable features do not have any semantic import. The proposal makes the prediction that reduplicated nouns are similar to bare common nouns in the sense that they do not bear the specification of singular-plural distinction. I show this prediction is borne out. The proposal also leaves room for an analysis of typological variation of plural reduplication.
Two new species and one new record of the genus Tylopilus (Boletaceae) from Indian Himalaya with morphological details and phylogenetic estimations
Authors: Chakraborty Dyutiparna , Vizzini Alfredo , Das Kanad
Published: April 2018

Tylopilushimalayanus and T.pseudoballoui are described as new species from two Himalayan states (Sikkim and Uttarakhand) in India. Tylopilushimalayanus is characterised by a unique combination of features: reddish- or brownish-grey to purplish-grey then brown to reddish-brown or darker pileus, absence of olive or violet tinges on stipe surface, angular pores, stipe without reticulum or rarely with a faint reticulum restricted to the very apex, bitter taste of the context and positive macrochemical colour reaction of the stipe context with KOH (dark orange) and FeSO4 (dark green), medium sized (10.9–14.4 × 3.9–4.9 µm) basidiospores and occurrence under coniferous trees; T.pseudoballoui is distinguished by orange-yellow to brown-yellow sticky pileus, pale yellow pore surface with pinkish hues that turns pale to greyish-orange on bruising; angular pores, stipe concolorous to pileus with pruinose but never reticulate surface, ixocutis pattern of pileipellis and occurrence under broadleaf trees. Another species, T.neofelleus, which was reported earlier from China and Japan, was also collected from Sikkim and reported for the first time from India. All three species are described with morphological details and two-locus based (nrLSU and nrITS) phylogenetic data.
Isotomidae of Japan and the Asiatic part of Russia. I. Folsomia ‘inoculata’ group
Authors: Potapov Mikhail , Hasegawa Motohiro , Kuznetsova Natalia , Babenko Anatoly , Kuprin Alexander
Published: April 2018

The paper considers blind species of the genusFolsomiahaving two pairs of macrosetae on both meso- and metathorax and united in so-called ‘inoculata’ group, which is given a new, more laconic definition. Morphological characters important in the group’s taxonomy are discussed and a further division into four subgroups is proposed. Eight new species, i.e.,F.amuricaPotapov & Kuznetsova,sp. n.,F.brevisetaPotapov & Kuznetsova,sp. n.,F.calcareaPotapov,sp. n.,F.imparisPotapov & Hasegawa,sp. n.,F.laconicaPotapov & Kuznetsova,sp. n.,F.tertiaPotapov,sp. n.,F.trisensillaPotapov,sp. n., andF.tubulataPotapov & Babenko,sp. n., are described.F.hidakanaUchida & Tamura andF.inoculataStach are redescribed basing on new material, for the latter species the Stach’s individuals were also examined. A key to species of the group is given.
A taxonomic study of Costa Rican Leptodrepana with the description of twenty-four new species (Hymenoptera, Braconidae, Cheloninae)
Authors: Dadelahi Samin D. , Shaw Scott R. , Aguirre Helmuth , de Almeida Luis Felipe V.
Published: April 2018

The genus Leptodrepana Shaw was described in 1983, but prior to the current study only one Neotropical species had been described from Mexico and none were named from Costa Rica. In this paper twenty-four new species are described and named from Costa Rica: L.alexisae Dadelahi & Shaw, sp. n., L.atalanta Dadelahi & Shaw, sp. n., L.conda Dadelahi & Shaw, sp. n., L.conleyae Dadelahi & Shaw, sp. n., L.demeter Dadelahi & Shaw, sp. n., L.eckerti Dadelahi & Shaw, sp. n., L.gauldilox Dadelahi & Shaw, sp. n., L.hansoni Dadelahi & Shaw, sp. n., L.kimbrellae Dadelahi & Shaw, sp. n., L.lorenae Dadelahi & Shaw, sp. n., L.munjuanae Dadelahi & Shaw, sp. n., L.ninae Dadelahi & Shaw, sp. n., L.pamelabbas Dadelahi & Shaw, sp. n., L.ronnae Dadelahi & Shaw, sp. n., L. rosanadana Dadelahi & Shaw, sp. n., L.schuttei Dadelahi & Shaw, sp. n., L.scottshawi Dadelahi, sp. n., L.shriekae Dadelahi & Shaw, sp. n., L.sohailae Dadelahi & Shaw, sp. n., L.sorayae Dadelahi & Shaw, sp. n., L.soussanae Dadelahi & Shaw, sp. n., L.stasia Dadelahi & Shaw, sp. n., L.strategeri Dadelahi & Shaw, sp. n., and L.thema Dadelahi & Shaw, sp. n. A key to Costa Rican species of Leptodrepana is provided. The flagellum of all female Leptodrepana described in this work is reduced to only 17 flagellomeres. This character state is also found in two North American species described by Shaw (1983), L.opuntiae Shaw and L.oriens Shaw. It is hypothesized that a female antenna with 17 flagellomeres is a synapomorphy for a species-group comprising all the Costa Rican Leptodrepana species as well as two of the Mexican and North American species, L.opuntiae and L.oriens.
Wecomedon Jarrett & Bousfield, 1982, a replacement name for the amphipod genus Psammonyx Bousfield, 1973 (Crustacea, Amphipoda, Tryphosidae), preoccupied by Psammonyx Döderlein, 1892 (Foraminifera, Astrorhizida, Ammovolummidae)
Authors: Horton Tammy
Published: April 2018

Wecomedon Jarrett & Bousfield, 1982 is reintroduced as a replacement name for Psammonyx Bousfield, 1973 (Crustacea: Amphipoda: Tryphosidae) which is a junior homonym of Psammonyx Döderlein, 1892 (Foraminifera: Astrorhizida: Ammovolummidae).
Viejos y nuevos debates: juventud y acción sociopolítica
Authors: Zubero Imanol
Published: April 2018

En este artículo analizamos tres cuestiones centrales que se plantearon en 1968 y se siguen planteando en la actualidad: el quién (el sujeto), el qué (los contenidos) y el cómo (los medios) de la acción sociopolítica transformadora. Cuestiones que no nacen en aquel momento, pero que sí quedaron formuladas en unos términos que han llegado hasta la actualidad.
Representación mediática de las empresas spin-off académicas. Los casos de la Universidad de Granada y la Universidad Politécnica de Madrid
Authors: Arboledas Luis
Published: April 2018

Las empresas spin-off son una de las herramientas puestas a disposición de las universidades para comercializar y transferir el conocimiento científico generado en su seno, sustrato fundamental del proceso innovador que demanda el capital de las economías desarrolladas. Análogamente, constituyen un nuevo objeto de noticiabilidad en los medios de comunicación, que prestan ocasionalmente sus espacios informativos a dar cobertura mediática de la actividad desarrollada por tan singular tipología de empresas. El objeto de esta investigación estriba en analizar y comparar la cobertura mediática recibida por las spin-off de dos de las universidades más prolíficas en la creación de estos entes económicos privados en el estado español, la Universidad de Granada y la Universidad Politécnica de Madrid. Se pretende, por esta vía, penetrar en la representación mediáticamente construida de tales outputs de la práctica tecnocientífica y, por extensión, del mismo modelo de transferencia del conocimiento actualmente implementado por las instituciones científicas financiadas con dinero público.
Geovisualization of Socio-Spatial Data on Outdoor Activities and Values in the Southern Appalachians
Authors: Styers Diane M. , Dobbs G. Rebecca , Cerveny Lee K. , Hayes Isaac T.
Published: April 2018

This article describes how GIS is increasingly being used to explore, analyze, and visualize qualitative social data across space. The authors applied a number of geovisualization and analysis approaches to spaces identified on maps by survey participants, in the context of a Human Ecology Mapping (HEM) project in western North Carolina. HEM is an applied research endeavor that has been used in a number of other locations to tease out relationships between people and landscapes by identifying both the activities people do in certain locations and the values they hold about those locations. The authors' western NC project gathered location information through participant sketch mapping, and activities, values, and social/demographic data in a survey. They combined these in a GIS and present a selection of visualization and analyses that demonstrate the effectiveness of GIS techniques in understanding places, how they are used, and which people use them for what purposes.
Multihoming with Dynamic Mobile Network Selection
Authors: Vesselkov Alexandr , Hämmäinen Heikki , Töyli Juuso
Published: April 2018

This article describes how mobile operators occasionally fail to provide adequate service quality due to network overload, blackouts, or coverage white spots. Customers can increase the quality of connections by multihoming, i.e. using subscriptions of several operators. Multihoming is facilitated by an innovative reprogrammable embedded SIM (eSIM) that can enable dynamic switching between networks. Although eSIM multihoming is advantageous, its future is not definite, as it is affected by multiple factors and actors with conflicting business interests. This paper defines scenarios for the evolution of eSIM multihoming and its possible impact on competition by constructing qualitative system dynamics models based on expert interviews. The results show that depending on market conditions and actions of stakeholders, multihoming may reach high diffusion, find application in special use cases, or fail to take off. With high diffusion, competition between operators will become more dynamic, and market share will be defined by the number of served sessions.
Addressed Query Gossip Resource Discovery Protocol for Mobile P2P Networks and Its Performance in Diverse Mobility Models
Authors: Sornil Ohm
Published: April 2018

This article describes how P2P resource discovery protocols perform poorly over mobile ad hoc networks mainly due to the frequent network dynamics. Peer-to-Peer search techniques including structured and unstructured can be employed over MANETs. Empirical studies indicate that searching in such resultant networks are not efficient and effective due to peer discovery, connectivity and mobility issues. The author proposes Addressed Query Gossip Resource Discovery algorithm, a lightweight resource discovery designed to suit the mobility requirements of ad hoc networks to optimize the search performance while at the same time minimize the extra usage of mobile and network resources. Mobility models represent the movements of mobile nodes. Such models are used to represent how the location, velocity and acceleration change over time. The author conducts performance analyses of the proposed protocol and widely used unstructured search techniques over MANET under 2 realistic mobility models, i.e., Random Waypoint and Reference Point Group Mobility models. The results show that the proposed protocol has the best performance in almost every measured metrics. In addition, the protocol consumes less energy, has less message overhead and good success ratio for random waypoint movement as compared to the reference group mobility model. After extensive evaluations, the simulation results clarify that the mobility models have a significant impact on the performance of peer-to-peer content discovery protocols over mobile ad hoc networks.
Perspectives on Equity, Inclusion, and Social Justice in Education in Four Nordic Countries
Authors: Ragnarsdóttir Hanna
Published: April 2018

The article addresses some fundamental values in education and their implications in the Nordic countries, such as equity, democracy, social justice and inclusion, while its main aim is to introduce and discuss main findings from case studies in pre-, compulsory and upper secondary schools that are part of the Nordic research project; Learning Spaces for Inclusion and Social Justice: Success Stories from Immigrant Students and School Communities in Four Nordic Countries. The aims of the research were to 1) to understand and learn from the experiences of immigrant students and children who have succeeded academically and socially; and 2) explore and understand how social justice is implemented in equitable and successful diverse Nordic school contexts and other learning spaces. The research is grounded within theories of critical multicultural education and culturally responsive pedagogy. Findings reveal a variety of successful educational practices on all three school levels while some challenges also exist.
Student-Teachers Reflecting on Student Diversity in Schools and Their Future Role as Teachers
Authors: Gunnþórsdóttir Hermína
Published: April 2018

Icelandic society and schools are becoming more diverse than ever before and teachers need to be prepared and skilled to teach in multicultural and inclusive schools that account for student diversity. This article reports findings on how two groups of student-teachers see student diversity as an element in their future job as teachers in Icelandic schools. Data were gathered by reflective diaries through two terms in a mandatory course (fourth year/master) in the teacher education programme at the University of Akureyri in Iceland. The students reflected on the course reading material that was based on both international and local literature on inclusive education, bilingualism, multicultural education, social justice and democracy. The findings indicate that a majority of the student-teachers had not thought critically about how student diversity would affect their future work as teachers, but their ideas about their role as teachers show that they want and hope to be responsible for all students.
Language Hierarchisations and Dehierarchisations
Authors: Daryai-Hansen Petra , Layne Heidi Johanna , Lefever Samúel
Published: April 2018

This article describes how Nordic societies have become more diverse with regard to languages presented at school. However, strong language hierarchies can be identified, which position majority, migrant and minority languages in the schools differently. This article will present some findings from the DELA-NOBA project which focus on parents' perspective on plurilingualism and language awareness. In the project, a set of teaching activities focusing on language awareness and diversity were developed in schools in the participating countries in order to contribute to language dehierarchisations. The theoretical framing for this study is based on a conceptualisation of language hierarchisation and dehierarchisation, and the data used are from parents' pre- and post-questionnaires in Denmark, Iceland and Finland. An important aim of this study was to investigate parents' choices and representations concerning plurilingualism and plurilingual education. The results indicate that plurlingualism is strongly appreciated by the parents, but the recognition of language hierarchies needs more attention.
Sensor Based Smart Real Time Monitoring of Patients Conditions Using Wireless Protocol
Authors: Jegan R.  , Nimi W.S.
Published: April 2018

This article describes how physiological signal monitoring plays an important role in identifying the health condition of heart. In recent years, online monitoring and processing of biomedical signals play a major role in accurate clinical diagnosis. Therefore, there is a requirement for the developing of online monitoring systems that will be helpful for physicians to avoid mistakes. This article focuses on the method for real time acquisition of an ECG and PPG signal and it's processing and monitoring for tele-health applications. This article also presents the real time peak detection of ECG and PPG for vital parameters measurement. The implementation and design of the proposed wireless monitoring system can be done using a graphical programming environment that utilizes less power and a minimized area with reasonable speed. The advantages of the proposed work are very simple, low cost, easy integration with programming environment and continuous monitoring of physiological signals.
Ontology-Based Interaction of Mobile Robots for Coalition Creation
Authors: Kashevnik Alexey , Smirnov Alexander , Teslya Nikolay
Published: April 2018

Popularity of research in the area of robotics over the last years opens new tasks to develop in the area of intelligent behavior of robots for coalition creation and joint tasks solving by them. The article presents an approach to ontology-based mobile robots interaction for coalition creation. The approach is based on cyber-physical-social system concept where the physical devices interact in smart space with each other and with humans for implementing joint actions in physical space. In scope of the approach the context-based model for mobile robot interaction, the ontological model of a mobile robot, and the method for robot ontology matching have been developed. The ontology formally represents knowledge as a set of concepts within a domain, using a shared vocabulary to denote the types, properties, and interrelationships of those concepts. The presented approach has been approved by the point exploring and obstacles overcoming case study. Mobile robots have been constructed based on the Lego Mindstorms EV3 educational kit.
Accessing Quality Open-Access Literature to Enable Teaching, Learning, and Industry
Authors: Raeth Peter G.
Published: April 2018

Commercial control of the world's published literature has grown to the point where costs are prohibitive for developing nations. This article describes a computer engineer's response to this problem. The result is a publicly-accessible meta-search engine that focuses on open-access sources. With one set of keywords, this engine searches many engines at the same time. It has been used to help develop entire courses based solely on open-access literature. While there are excellent search capabilities for open-access literature that deliver full and searchable text, none of these cover the entire space. To examine a larger space, one must manually employ numerous engines. Herein is a discussion, background, vision, and top-level dataflow for the author's publicly-accessible meta-search engine that evolves with the needs of education, training, and industry.
Mobile Phone
Authors: Gomera William Clifford , Oreku George S.
Published: April 2018

This article describes how loan monitoring tools are integrated applications designed to help Micro Finance Institutions (MFIs) to improve efficiency and effectiveness in loan collection. The task of loan monitoring is monumental to loan officers, forcing them to travel long distances to serve a large number of customers leading to ineffective use of time and money. For that reason, it is of great advantage to have an integrated system that can manage their business with the click of the mobile phone button, allowing MFI and MB to concentrate on their day to day business operations. The application is expected to provide an easy way to track loans and collections from micro businesses owners as well as improving transparency through provision of customers' report. The study conducted through in-depth literature review, interviews, focus group discussion and questionnaire. All this allowed end user participatory approach for good insight to the solution. The data was analyzed through the coding approach (qualitative approach). The test performance through a white and black box was designed and conducted MFI premises.
Management Approach of Risk Analysis in Information Security
Authors: Petrescu Anca Gabriela
Published: April 2018

This article describes how the ease of access to information and communication technologies is practically a prerequisite for the functioning of modern society. Taking the competitive market into consideration, the protection of the information infrastructure for a company, could mean that company has a competitive advantage. This article is relevant to better understand how the actors involved in information and communication technologies could develop new models of information systems and risk management strategies. The results of this research show that each manager must handle threats, because otherwise the organization's objectives cannot be met. Given that uncertainty is a fact of life, then the uncertainty response should become a permanent managerial concern.
Improving Efficiency of the Romanian Energy Sector by Supporting Investments in Renewable Energy Use
Authors: Boteanu Carmen Mihaela
Published: April 2018

This article describes how Romania has implemented a generous program for green energy development, which attracted so many investments that the target set for 2020 must have reached. This article presents a model for estimating the effect of governmental decisions on investments in renewable energy in Romania. This also reflects their influence on the state budget revenue generated from renewable energy producers and consumers, both households and industrial consumers. Results can be useful for the public sector involved in the production of green energy.
Global Regulations in Content Industries
Authors: Cossiavelou Vassiliki
Published: April 2018

This article explores the role of privacy policies on internet sites as a newly emerging news gatekeeping factor as well as part of the new web world wars between regulators and internet giants' privacy policies, like the one of Google. All these developments are related to both innovation excellence and customer experience, in every aspect of life, business and entertainment, and therefore of the news industry. One of the most important fights of these recent wars is raging between Google and the EU on the field of customers' experience and their privacy protection. The author argues that even the updated news gatekeeping model by ICTs influences should be mapped more precisely in every one of its traditional pillars, focusing on the consumer's data protection. Their potential exploitation by search engines and advertisement industries from one side and the privacy protection claims from international institutions from the other, indicate the need of new variables in the equation of the updated media gatekeeping model, as derived from global regulations on the issue. The reactions of the EU to the actions of Google indicate the momentum of wars in citizen–customer's experience, which is the most reliable key performance indicator in the e/m commerce sector. A convenience sample's data show that the policy adopted by the EU and the one applied by the global content industries would remap the audiences' preferences and therefore the news industries strategies.
Addressing Ethical Concerns of Big Data as a Prerequisite for a Sustainable Big Data Industry
Authors: Lokshina Izabella V. , Lanting Cees J.M.
Published: April 2018

Big Data combines information from diverse sources to create knowledge, make better predictions and tailor services. This article analyzes Big Data both as a technology and an industrial activity, and identifies the points of weakness and ethical concerns created by current business practices. Potential solutions for these concerns are proposed in order to build and maintain business practices respecting ethical standards as a prerequisite for a sustainable Big Data industry. This article covers both the usage of Big Data by industry and the development of a sustainable Big Data services industry.
Regression Analysis on the Effect of Lecturers' Competencies on Students' Performance
Authors: Long Choi Sang , Gee Ng Chiaw
Published: April 2018

This article determines the impact of lecturers' competencies on students' performance at a private university college in Malaysia. A quantitative approach is used to collect and analyse the data by using descriptive analysis, Pearson correlation analysis and multiple regression analysis. Respondents are from different academic programs to respond the questionnaires on lecturers' competencies and their academic performance. There are ten independent variables which have been identified to be tested with the dependent variable. The findings revealed that there is a positive relationship between lecturers' competencies and student performance.
Blended Learning Strategies for Engaging Diverse Student Cohorts in Higher Education
Authors: McCarthy Josh
Published: April 2018

This article explores blended learning strategies within teaching and learning higher education as a channel of addressing learner diversity. Three case studies were critically examined to highlight the efficacy of various blended learning techniques to improve students' learning experience. These blended learning techniques include online peer and staff feedback for formative assessment; online video and audio feedback for summative assessment; and a flipped classroom teaching model. Culturally, educationally, and socially diverse first year student cohorts participated in this study to provide insight into the advantages and disadvantages of each blended learning technique. Data on the effectiveness of these pedagogical and technological innovations were gathered through online surveys to address students' reflection of learning experience. Findings of these case studies are significant in light of the growing diversity found within student cohorts in higher education; as well as an increase in technology-driven teaching innovation and student-centred learning techniques.
The Resilience of Pre-Merger Fields of Practice During Post-Merger Information Systems Development
Authors: Vieru Dragos , Rivard Suzanne
Published: April 2018

This article analyzes the interactions among individuals engaged in information system development (ISD) projects aimed to support an organization created by the merger of previously independent entities. The authors draw on a practice perspective on knowledge sharing across boundaries to analyze two ISD projects in a post-merger integration (PMI) context of the merger of three hospitals. In both projects, the final IS-enabled practices differed from the post-merger practices that had been planned by the hospital management. Our analysis suggests that pre-merger fields of practice tend to be resilient, and that this resilience originates in some of the agents' actions aimed at maintaining the status quo. In addition, they found this resilience to be facilitated by the ease of tailoring the software packages used to develop the two IS.
Exploring the Similarities Between Users and Non-Users of Consumer Mobile Internet Services
Authors: Gauttier Stéphanie , Gauzente Claire
Published: April 2018

While mobile technologies have become pervasive, some consumers remain reluctant to accept, adopt and use them. Literature traditionally opposes the notions of ‘user' and ‘non-user' but recent developments show the boundary between these two concepts is very thin. The aim of this article is to review theoretical frameworks that are available for understanding such consumer attitudes and behaviours and to confront theoretical analysis with in-depth subjective investigation of a non-user, occasional user and heavy user, facing a set of different mobile media offers. The empirical analysis is conducted using Q-method. Results demonstrate similarities among users and non-users when considering their attitude towards different technologies, which opens opportunities for market consumer technologies to increase their penetration rate.
The Role of Augmented Reality in the Interactivity of Co-Creation
Authors: Alimamy Saifeddin , Deans Kenneth R , Gnoth Juergen
Published: April 2018

This article describes how the alignment of the concept of value in the discussion of Service Dominant Logic (SD-L) has led to new conceptualizations including the process of co-creation and guidelines for its implementation. The current research critically reviews four key co-creation models using SD-L and value-in-use theories and discusses their usefulness in the context of Augmented Reality (AR). The synthesis and discussion of these models lead to our proposition, that augmented reality (AR) contributes to interactivity and facilitates co-creation.
Assessing the Physicians' Acceptance of E-Prescribing in a Developing Country
Authors: Khan Ikram Ullah , Yu Yugang , Hameed Zahid , Khan Safeer Ullah , Waheed Abdul
Published: April 2018

This article describes how physicians in developing countries spend much time and effort in handling manual prescriptions, which can be easily reduced with the help of online technology. Although different theoretical models for technology acceptance have been thoroughly explored, there is as yet sparse literature regarding its use in the context of healthcare in developing countries, especially with innovative models. To this end, this article uses an integrative model of Unified Theory of Acceptance and Use of Technology (UTAUT) extended by perceived credibility to better understand the acceptance of e-prescribing among physicians in a developing Asian country. In addition, the article uses perceived organizational support as a moderator between behavioral intentions and usage of technology. Using a survey method, the article collects data from 295 physicians in the capital city of Pakistan and analyzes the data through structural equation modeling (SEM) to evaluate relationships among the identified constructs. The authors' results supply empirical evidence that performance expectancy, effort expectancy, facilitating conditions, social influence, and perceived credibility all have a positive and significant impact on physicians' behavioral intentions to adopt e-prescribing. The article also concludes that the higher the perceived organizational support, the higher the use of e-prescribing. The study enriches theory and practice by giving implications for both academicians and practitioners.
Preparation of Consolidated Body Zeolite from Rice Husk Ash
Authors: Takahashi Masahiro , Shibata Koki , Shiono Takeshi
Published: April 2018

Rice husks (RHs) are agricultural wastes which include approximately 20 mass% of silica (SiO2). In Thailand, RHs have been applied as fuel for thermal power generation systems and a large amount of ash (Rice husk ash: RHA) was produced. In addition, our research group has reported before that binder-free consolidated zeolite A could be obtained by using SiO2 powder with geopolymer reaction as a humidity conditioning material because zeolite A has been used as desiccant and builder for detergent with low silica content. Moreover, other kind of zeolite with high amount of SiO2 content, such as ZSM-5, was under interest due to its good properties as catalytic activity and a unique pore structure. But, it was not widely utilized because of the difficulty of consolidated body preparation. Therefore, in the present study, the possibility of the usage of RHA as raw materials for consolidated zeolite A and ZSM-5 was investigated for the high-value application of RHA under specific heat treatment condition, molar ratio and preparation technique. After specimens were obtained, XRD analysis and SEM were charactarized for consolidated bodies to confirm cystalline phases and observe microstructure, respectively. Consolidated zeolite A was synthesized with heat treatment above 60°C. The sample heat treated at 60°C for 24 h consisted of homogeneous zeolite A particles with the size smaller than 1 μm. In addition, consolidated ZSM-5 was synthesized with an usual method as TPABr (Tetra propyl ammonium bromide) technique and research method as S.C. (seed crystal) technique. The results showed that although around 10 μm seed crystal was used, around 4~5 μm of ZSM-5 particles were obtained by S.C. technique. This result led to the possibility to use RHA with S.C. technique to synthesize consolidated body and control ZSM-5 particle size.
Feasibility of Producing Glass-Ceramics from a Mixture of Glass Cullet-Eggshell and Perlite
Authors: Nakkam Patiphan , Chantaramee Napat
Published: April 2018

Feasibility of producing glass-ceramics from cullet, eggshell and perlite was investigated. In this study, a nucleating agent was synthesized from calcined eggshell and expanded perlite prior to blend with soda-lime waste glass, and then sintered at temperatures ranging from 850 to 1050°C at a heating rate of 10°C/min for 30 - 180 minutes. The crystallization behavior of glass-ceramics was investigated by means of X-ray diffraction analysis and surface morphology, and the chemical compositions were evaluated by scanning electron microscopy and energy dispersive X-ray spectroscopy. Results showed that crystalline phase embedded in the glass phase were needle-like crystal of wollastonite, cristobalite and quartz. According to the chemical resistance test, the obtained glass-ceramics showed acceptable corrosion resistance particularly in acidic environment. The weight loss for glass-ceramics immersed in 1wt% of sodium hydroxide solution was 0.28 - 0.50 wt%, while weight loss due to 1vol% of sulfuric acid solution was 0.04 - 0.16 wt%.
Compressive Strength and Setting Time Modification of Class C Fly Ash-Based Geopolymer Partially Replaced with Kaolin and Metakaolin
Authors: Hemra Khanthima , Yamaguchi Shuntaro , Kobayashi Takaomi , Aungkavattana Pavadee , Jiemsirilers Sirithan
Published: April 2018

Class C fly ash is widely used as a geopolymer raw material. It contains high calcium oxide and iron oxide resulting in a fast setting property. The influence of using kaolin and metakaolin replaced class C fly ash in geopolymer processing were investigated in term of compressive strength and setting time. Kaolin and metakaolin which calcined at different temperature of 600°C and 700°C replaced Class C fly ash between 0 to 50 wt. %. The geopolymers were prepared at constant KOH concentration as 6.0 M, K2SiO3/KOH ratio as 1.0, solid/liquid ratio as 1.5 and 7 days of curing. The compressive strength is obviously increased when fly ash was replaced with both kinds of metakaolin, although, it is inclined to decrease when replaced by kaolin. The compressive strength is increased up to 13% and 47% with the replacement by 50 wt. % of metakaolin calcined at 600°C and 700°C, respectively. On the other hand, the replacement by 50 wt. % of kaolin give the initial setting time prolonging from about 6 min to 80 min. However, the initial setting time of metakaolin calcined at 600°C and 700°C replacement is also improved to about 37 min and 20 min, respectively. These results from their difference of amorphous phase and reactivity of the replacement materials. XRD analysis reveals the combination phases of amorphous geopolymer gel that is the broad hump centered at 28 – 30° 2θ, and products from the reaction such as calcium oxide, arcanite, calcium silicate hydrate, quartz and muscovite which the two latter are from unreacted metakaolin. They are confirmed by FT-IT result and microstructure evaluation by SEM. Therefore, the partially replacement of fly ash with kaolin and metakaolin in fly ash-based geopolymer production are affected to the compressive strength and resulted to modify the setting time.
Preparation and Characterization of Lead-Free (Ba0.4Sr0.4Ca0.2)(Zr0.05Ti0.95)O3 Ceramics Using BST Seed Induced Method
Authors: Dangsak Jiraporn , Eitssayeam Sukum , Tunkasiri Tawee , Intatha Uraiwan
Published: April 2018

The solid solution of lead-free (Ba0.4Sr0.4Ca0.2) (Zr0.05Ti0.95) O3 (BSCZT) ceramics were prepared from the seed induced method. The Ba0.6Sr0.4TiO3 (BST) were used as the seed crystals, they were prepared using the molten salt technique. The phase formation was examined using the X-ray diffraction technique (XRD). It was found that the single phase perovskite structure of BST was obtained at a temperature of 800°C. The ceramics were prepared using the conventional solid state reaction by adding of BST seed crystals at 2.5, 5, 7.5 and 10 mol%. The structure showed that a single phase perovskite was obtained after sintered at 1400 °C. This work confirmed that BST seed crystal successfully diffused into BSCZT ceramic and the BSCZT ceramic with a seed crystal showed higher dielectric than the BSCZT ceramic without seed crystals.
Preparation of Carbon Fiber Reinforced Metakaolin Based-Geopolymer Foams
Authors: Lee Ju Hak , Wattanasiriwech Suthee , Wattanasiriwech Darunee
Published: April 2018

In this report, metakaolin based-geopolymer foams reinforced with carbon fibers have been prepared for thermal insulating purpose. Potassium silicate and potassium hydroxide solutions were used as activating agents while hydrogen peroxide was used as a pore former. In order to improve chemical interfacial adhesion with the matrix, the carbon fiber was pre-oxidized using 3 M of nitric acid solution for 10, 30, 50 and 70 min. It was found that variation in treatment time did not cause significant difference in neither mechanical nor thermal conductivity. However, both flexural strength and fracture toughness were significantly improved when the geopolymer foams were reinforced with carbon fibers while thermal conductivity was increased by about two times. The prepared geopolymer foams showed promising results to serve the designed purpose. Keywords: metakaolin based-geopolymer foam, carbon fiber reinforcement, oxidation treatment, mechanical and thermal properties.
Characterization of Fe2O3 Nanowires and its Solar Cell Applications
Authors: Daothong Suphaporn
Published: April 2018

Iron oxide nanowires were synthesized on stainless steel mesh substrate using the thermal oxidation process at the varying temperature of 750°C for 60 min. The samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD pattern showed that the iron oxide nanowires exhibited the structure of alpha-Fe2O3 (hematite). SEM images indicated that the diameter and the length of the nanowires were 80 to 285 nm and more than 5 μm, respectively. The dye-sensitized solar cell (DSC) properties based on the nanowires substrate was also studied. It was found that the power conversion efficiency (η) of the device was 0.11%.
The Optimal Ratio of Mixed Talc Silica and Narathiwat Clay for Cordierite-Mullite Refractories
Authors: Ariyajinno Nattawut , Thiansem Sakdipown
Published: April 2018

In this paper, effects of incorporation of Narathiwat clay (NT), talc and silica on the mechanical properties of cordierite-mullite refractories were investigated. The starting raw materials were mixed in different ratios and fired at 1300 °C for 2 hours. XRD patterns of fired refectories indicated cordierite and mullite phases. The fired samples were studied the firing shrinkage, water absorption, bulk density, apparent porosity and bending strength of the cordierite-mullite refractories. The optimum condition was achieved for the composition of 20% Talc that had shrinkage: 11.78%, water absorption: 4.16%, bulk density: 2.28 g/cm3, apparent porosity: 9.2% and bending strength: 330.82 kg/cm2. The results thus showed that Narathiwat clay, talc and silica was a potential materials for use kiln furniture cordierite-mullite refractories.
Effects of Eu Doping and Calcination Temperatures on Chemical Compositions, Microstructure and Luminescent Intensity of BaAl2O4
Authors: Jongprateep Oratai , Chunwijitra Kritthin
Published: April 2018

Photoluminescent (PL) materials are commonly utilized in applications such as leakage test, crack monitoring, banknote forgery detection, and fingerprint detection. Doping, chemical compositions and microstructure, are generally accepted as factors that influence luminescent intensity of spinel-structure phosphors such as SrAl2O4, CaAl2O4, and BaAl2O4. This study aimed at synthesizing BaAl2O4 photoluminescent powders by solution combustion technique. Effects of Eu doping and calcination temperatures on chemical compositions, microstructure and luminescent intensity of the materials were also examined. Experimental results indicated that Eu concentrations did not exhibit a significant effect on chemical composition and particle morphology. Higher calcination temperatures, on the contrary, resulted in reduction of secondary phase formation, and in alteration of morphology of particles and pores. The greatest luminescent intensity was achieved in the BaAl2O4 sample with 3 mol% Eu subjected to calcination at 900°C. Enhancement of the luminescent intensity in this sample might be attributed to minimal secondary phase and pore content.
Fabrication and Characterization of Low Thermal Expansion Cordierite/Spodumene/Mullite Composite Ceramic for Cookware
Authors: Junlar Pranee , Wasanapiarnpong Thanakorn , Punsukmtana Lada , Jiraborvornpongsa Noppasint
Published: April 2018

Ceramic cookware can be taken a direct flame or stove top for the duration without damage. The selected materials must have low thermal expansion coefficient, high strength, low water absorption and high thermal shock resistance, reasonable in cost and easy to be produced. Cordierite and spodumene composite has been interested for ceramic cookware due to their fitted properties. In previous work, study in the cordierite-spodumene composite with low thermal expansion coefficient of 2.60 x 10-6 /°C when sintered at 1250 oC with a ratio of spodumene 60 wt% and cordierite 40 wt% can withstand the pot shape samples. However, the sample showed relatively high water absorption and low strength which was not appropriate for using in this application. In this research, mullite is added in the formula to improve strength and densification of ceramic composites. Spodumene, ball clay, calcined talc and calcined alumina are used as starting raw materials and formed by slip casting. All samples are sintered in a temperature range from 1250-1275 °C in an electric furnace. Water absorption and bulk density were tested by Archimedes method, modulus of rupture was tested by the three-point bending method, microstructure were investigated by SEM and the coefficient of thermal expansion was measured by dilatometer. It was found that the mullite phase was investigated when adding mullite more than 30 wt% in cordierite-spodumene composite.
Effect of Aluminum Hydroxide Addition on Properties of Fired Refractory Clay Brick
Authors: Nilpairach Siriphan , Watchaikun Anucha , Panyawatcharakom Kasidech , Wasanapiarnpong Thanakorn , Jiraborvornpongsa Noppasint
Published: April 2018

The pottery of Ratchaburi is very famous especially dragon jar which was fired by using dragon kiln. The kiln was made of unfired clay bricks, which its properties including high refractoriness, low thermal shrinkage and durable are desired. Aluminum hydroxide is an interesting material for improving brick’s properties, providing high active alumina (gamma-alumina) content after decomposition, high melting point and also reasonable cost. The study evaluated the effect of an additive, Al (OH)3, on the fried properties of refractory clay brick. In this study, four difference proportions of Al (OH)3 to clay , including 0:100, 25:75, 49:51 and 76:24 were studied. The specimens of 5x5x5 cm3 were formed by hand molding, then were fired at 1200, 1300 and 1400°C. The properties including refractoriness, volume shrinkage, strength, bulk density, water absorption, and slaking time were investigated. The samples of 25:75 ratio of Al (OH)3 to clay, which was fired at 1300°C exhibited high in refractoriness, low volume shrinkage of 5% and relatively low density of 1.69 g/cm3 as compared to those of 1400°C fired. Moreover, the moderate water adsorption of 15 % and useable compressive strength of 12.4 MPa was also observed. As a result, these properties suitable for using in firebox of dragon kiln of Ratchaburi province.
The Utility of Rice Husk Ash from Biomass Power Plant of Nakhon Ratchasima Province for Synthesis of Nano-Silica for Using Cathode Material of Lithium Ion Battery
Authors: Kamon In Onlamee , Srilomsak Suthum , Meethong Nonglak
Published: April 2018

The high purity nanosilica materials could preparation from different synthesis route. In this research, rice husk ash was extracted into silica powder, by chemical extraction method. Then, chemical composition analysis with XRF technique. In addition, the extracted silica nanoparticles were analyzed by XRD technique. Physical structure of nanoscale particles by SEM imaging. The results showed that the chemical composition of rice husk ash consists mainly of silica. While, the extracted silica nanoparticles had a high silica content of 99.9999%. In addition, silica extracted with silica nanoparticles was confirmed by XRD at position 2θ ≈ 22° and the crystalline extracts were amorphous to the physical characteristics of the SEM images. In the future, nanosilicon powder may be used to synthesize lithium-ion batteries.