Investigating the socio-constructivist dimension of online interactions: the case of synchronous audio-graphic conferencing systems

This study explores the quality of interactive patterns in audio-graphic conferencing environments and learners' involvement in interaction. Supporters of this technology claim that online interactions support socio-constructivist language learning. However, the existing literature does not indicate whether the quality of interaction required for realising constructivist principles of learning can affectively be ensured in such environments. The study is based on the Open University's online audio-graphic tuition environment, Lyceum. It investigates the verbal and written interactions of adult Open University students learning French. The data is analysed by different models of analysis pertaining to different socio-constructivist and cognitive models of analysis. The results show that students use high forms of thinking to engage in a cyclical rather than a linear process of knowledge construction. However, there is no evidence that this process is supported by the audio-graphic system itself. The tutor's style and task design play a more important role in supporting the learning process

Parameter analysis of copper-nickel-tungsten prepared via powder metallurgy process for electrical discharge machining of polycrystalline diamond

Polycrystalline Diamond (PCD) tools have an outstanding wear resistance. The electric conductivity of PCD caused by the conductive binding material (Cobalt) makes it possible to machine PCD tools with EDM. Electrode used in EDM of PCD must have better porosity, electrical and thermal conductivity. Therefore, this research presents the works in production of Cu-Ni-W electrode by powder metallurgy route. Production of powder metallurgy parts involve mixing of the powder with additives or lubricants, compacting the mixture and heating the green compacts in an Argon gas furnace so the particle bond to each other. Two levels of full factorial with six centre points and two replication technique was used to study the influence of main and interaction effects of the powder metallurgy parameter. There were four factors involved in this experiment. Factor A which is Type of Cu-Ni; Type A and Type B was defined as categorical factor. Factor B in which Composition of W; 5 Wt.%, 15 Wt. % and 25 Wt.%, was defined as numerical factor. Factor C which is the Compaction load; 7, 8 and 9 tonne and Factor D which is Sintering temperature; 635 ℃, 685 ℃ and 735 ℃ were also defined as numerical factor. Optical Microscope, Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) was used to analysed the microstructure and surface morphology of Cu-Ni-W electrode. The best parameter combination to produced better porosity, electrical and thermal conductivity for both Type A and Type B was 5 Wt.% of W, compaction load at 9 tonne and sintering temperature at 735℃. The best response for Type A is 12.65% of porosity, 14.40 IACS% of electrical conductivity and 413.26 W/m.℃ of thermal conductivity. While that, the best response for Type B were 9.36% of porosity, 16.66 IACS% of electrical conductivity and 345.21W/m.℃ of thermal conductivity. From the calculation of Maxwell’s Equation, Type A and Type B had the highest electrical conductivity of 58.48 IACS% and 77.35 IACS% respectively at W content of 5Wt.%. Type A and Type B also had the highest thermal conductivity of 369.86 W/m.℃ and 310.24 W/m.℃ respectively at W content of 5 Wt.%. Besides that, thermal conductivity also increased with the temperature increased until 450℃

The politicisation of transatlantic trade in Europe: Explaining inconsistent preferences regarding free trade and the TTIP. LEQS Paper No. 151/2019 January 2020

The Transatlantic Trade and Investment Partnership (TTIP) generated an unprecedented public contestation across Europe. In this paper, we focus on the sources of such backlash in European public opinion. Previous studies of this issue have analysed opinions on free trade and the specific agreement separately. However, not accounting for their correlated character could lead to biased conclusions about their determinants. To address this, we apply an innovative empirical approach and construct a set of bivariate probit models to calculate joint probabilities for the different configurations of support and opposition. We validate that attitudes toward free trade and the TTIP have similar but not identical foundations. Inconsistent preferences are rooted in individual values, EU attitudes, and political cues, as well as treaty partner heuristics. Our innovative empirical approach offers an improved understanding of trade attitudes within EU’s multilevel context

Hubungan di antara amalan pengurusan kualiti menyeluruh (TQM) dan inovasi produk di kalangan syarikat pemprosesan makanan industri kecil dan sederhana

Pada era globalisasi ini, keperluan pelanggan menjadi semakin sukar untuk dipenuhi telah mewujudkan persaingan sengit di kalangan organisasi menyebabkan sesuatu organisasi sangat sukar untuk bertahan. Oleh itu, pengurusan kualiti menyeluruh (TQM) menjadi falsafah pengurusan dan amalan syarikat yang membantu dalam menguruskan organisasi untuk meningkatkan keberkesanan dan prestasi keseluruhan ke arah mencapai status bertaraf dunia sejak dua dekad yang lalu (Yusof & Aspinwall, 2000). Di Malaysia, banyak organisasi mula menganggap kualiti sebagai komponen penting dalam rancangan perniagaan mereka untuk menghadapi cabaran persekitaran global yang baru. Sebilangan besar organisasi memberi tumpuan kepada Pengurusan Kualiti Menyeluruh (TQM) berbanding amalan kualiti lain (Nusrah, Ramayah & Norizan, 2006). Oleh kerana inovasi telah dikenali secara meluas sekarang, organisasi perlu menggabungkan kedua-dua aspek inovasi dan kualiti untuk mencapai prestasi yang tinggi. Oleh itu, hubungan antara TQM dan inovasi telah menjadi tumpuan dalam literatur amalan pengurusan (Feng et al., 2006)

Learning from Semantic Inconsistencies as the Origin of Dynamic Capabilities in MNCs: Evidence from Pharmaceutical MNCs

This paper focuses on origins of dynamic capabilities in multinational corporations (MNCs). Building on literature in the area of organizational memory and organizational learning, we investigate factors that contribute to subsidiaries of MNCs ability to detach themselves from obsolete knowledge and practices. To construct the theoretical framework, 11 extensive interviews with marketing and sales executives from three pharmaceutical MNCs operated in Iran were conducted. We test our hypotheses using statistical quantitative analysis of data related to 459 observations from subsidiaries of 51 pharmaceutical MNCs during years 2005-2009. We examine the quality of corrective actions taken by subsidiaries of pharmaceutical MNCs subsequent to subsidiaries failing to meet expected performance objectives. Our findings confirm a moderating role for internationalization, span, and the composition of human resources on the quality of corrective actions pursued

Using Semantic Ambiguity Instruction to Improve Third Graders\u27 Metalinguistic Awareness and Reading Comprehension: An Experimental Study

An experiment examined whether metalinguistic awareness involving the detection of semantic ambiguity can be taught and whether this instruction improves students\u27 reading comprehension. Lower socioeconomic status third graders (M age = 8 years, 7 months) from a variety of cultural backgrounds (N = 46) were randomly assigned to treatment and control groups. Those receiving metalinguistic ambiguity instruction learned to analyze multiple meanings of words and sentences in isolation, in riddles, and in text taken from the Amelia Bedelia series (Parish, 1979, 988). The control group received a book-reading and discussion treatment to provide special attention and to rule out Hawthorne effects. Results showed that metalinguistic ambiguity instruction was effective in teaching students to identify multiple meanings of homonyms and ambiguous sentences and to detect inconsistencies in text. Moreover, this training enhanced students\u27 reading com prehension on a paragraph-completion task but not on a multiple-choice passage-recall task, possibly because the two tests differ in the array of linguistic or cognitive correlates influencing performance. Comprehension monitoring was not found to mediate the relationship between ambiguity instruction and reading comprehension. Results carry implications for the use of language-based methods to improve reading comprehension in the classroom

Rationalizing the UTMS spectrum bids: the case of the UK auction

This paper considers bidder behaviour in the United Kingdom’s UMTS spectrum auction. Evidence is reviewed which shows that some bidders in this auction did not bid straightforwardly in accordance with fixed valuations of the licenses. We go on to consider more speculative hypotheses about bidders’ behaviour, such as the hypotheses that bidders revised their valuations in the light of other bidders’ behaviour, or that bidders’ valuations of licenses depended on which other companies appeared likely to win a license. We find weak evidence in favor of some of these hypotheses, but no hypothesis is supported by strong direct evidence. We conclude that the rationalization of bidding in the United Kingdom’s UMTS auction remains problematic. As a consequence we are cautious regarding the success of the auction in achieving an efficient allocation of licenses