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71.
Teachers play a key role in adoption of technologies for classroom use. This study surveyed teachers regarding their intention to use tablet technology to interact with students and other teachers through smart school websites technology. The Unified Theory of Acceptance and Use of Technology (UTAUT) served as the theoretical framework for this study, which was then augmented with context-specific determinants of adoption that captured teachers’ perceptions of the effects of technology on interactions with students and peers. The results showed no resistance among teachers with regard to trying different ways of working with tablets to achieve better learning, unlike other studies using the UTAUT constructs that have found negative reactions to implementing new technologies in the workplace. This is a crucial finding, since teacher appraisals affect the ways in which this technology can be employed to foster learning through technology facilitated interactions.  相似文献   
72.
Domain-specific systems are hypothetically specialized with respect to the outputs they compute and the inputs they allow (Fodor, 1983). Here, we examine whether these 2 conditions for specialization are dissociable. An initial experiment suggests that English speakers could extend a putatively universal phonological restriction to inputs identified as nonspeech. A subsequent comparison of English and Russian participants indicates that the processing of nonspeech inputs is modulated by linguistic experience. Striking, qualitative differences between English and Russian participants suggest that they rely on linguistic principles, both universal and language-particular, rather than generic auditory processing strategies. Thus, the computation of idiosyncratic linguistic outputs is apparently not restricted to speech inputs. This conclusion presents various challenges to both domain-specific and domain-general accounts of cognition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
73.
ABSTRACT

Two types of filter are developed. One is for the removal of sulfur compounds in petroleum and its derived products. The other is for upgrading, which is to lower the amount of asphaltene. Although research in selectivity and life cycle estimation of intermetallic media is still continuing, the mechanisms behind this technology are based upon the concept of nanotechnology and the principle of membrane mimetic chemistry.  相似文献   
74.
75.
Iris 《电击高手》2010,(8):82-83
乐观进取的火象星座敢于投资股市;然而土象星座更愿意选择稳妥保守的理财产品,十二星座各有各青睐的吸金大法。  相似文献   
76.
Academic conferences are places of situated learning dedicated to the exchange of knowledge. Knowledge is exchanged between colleagues who are looking to enhance their future research by taking part in several formal and informal settings (lectures, discussions and social events). We studied the processes of knowledge sharing and the influence of the use of IT at the International Conference of Information Systems (ICIS2007) held in Montréal. We describe the categories of knowledge content shared at the conference. Two forms of knowledge sharing were analyzed: formal, guided, planned knowledge sharing in lectures or discussions, and informal knowledge exchange during social events. Data were collected from 274 participants at the conference. The intensity of knowledge sharing in the formal settings was higher compared to the informal settings and was perceived as contributing to future research and to the creation of social relationships. In contrast, informal knowledge sharing contributed mainly to job enhancement and to the initiation of meetings. The discussion centers on planning and evaluating conferences in terms of seeking, creating and sustaining knowledge sharing.  相似文献   
77.
Writing and drawing produced by children 28-53 months old were compared. Israeli and Dutch preschoolers were asked to draw and write, to classify their products as drawing and writing, and to decide what they had drawn or written. Israeli and Dutch mothers classified the products. Scores on a scale for writing composed of graphic, "writing-like," and symbolic schemes showed improvement with age. Recognition of drawings as drawings preceded recognition of writings as writings. Scores on writing and drawing were substantially correlated, even with age partialed out, suggesting (a) that when children start drawing objects referentially, they write by drawing "print" and (b) that progress in object drawing involves progress in drawing print, so that their writing becomes more writing-like. Children unable to communicate meaning by writing spontaneously resort to drawing-like devices, indicating the primacy of drawing as a representational-communicative system. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
78.
The authors synthesised nanoparticles (NPs) loaded with P and K from KH2 PO4 using gelatin type‐A and type‐B, and sodium alginate as carriers. Using type‐A and type‐B gelatin, quasi‐spherical particles were obtained, with average sizes of 682 and 856 nm, respectively; with sodium alginate, the resulting NPs exhibited spherical shapes and 600 nm particle average size. The authors found an interaction between KH2 PO4 and alginate via the hydrogen bonds existent among the carboxylic groups of the carbohydrate and the OH‐groups of the H2 PO4 ‐; interactions among gelatin types with the OH‐groups and the H2 PO4 ‐ion were also observed. Adding trypsin to the distilled water solutions of the NPs coated with type‐A gelatin increased the concentration of P in the solution by threefold, while increasing that of K increased by 2.6‐fold. Conversely, adding α ‐amylase to the water solutions with sodium alginate increased the P and K concentrations in the solution by nearly 1.3‐ and 1.1‐fold, respectively. Thus, sodium alginate resulted in NPs with smaller sizes and better spherical formations, though with a high polydispersity index and lower release rate of P and K. This low release rate represents an advantage since plants demand nutrients for long periods, and conventional fertilisers display low use efficiency.Inspec keywords: nanofabrication, nanoparticles, hydrogen bonds, gelatin, biomedical materials, particle size, enzymes, molecular biophysics, biochemistry, nanobiotechnology, polymer films, potassium compoundsOther keywords: sodium alginate, biopolymeric particles, release tests, type‐B gelatin, spherical shapes, carboxylic groups, OH‐groups, distilled water solutions, type‐A gelatin, quasi‐spherical particles, particle average size, hydrogen bonds, trypsin, spherical formations, high polydispersity index, plants, α‐amylase, size 682.0 nm, size 856.0 nm, size 600.0 nm, H2 PO4 , KH2 PO4   相似文献   
79.
The evolution of the Maillard reaction (MR) by measuring the available lysine and furosine (FUR) contents in adapted and follow‐up powdered milk‐based infant formulas over the shelf‐life storage period, at 20 and 37 °C, was studied. Available lysine and FUR contents were determined by fluorimetry and high‐performance liquid chromatography respectively. Statistically significant differences were found between adapted and follow‐up infant formulas with respect to the available lysine and FUR contents. Available lysine contents decreased significantly throughout the storage time, and the contents at 37 °C were lower than at 20 °C. A statistically significant increase in FUR contents was observed during the storage period, with the contents being high at 37 °C than at 20 °C. A simple regression analysis between the available lysine and FUR contents during (a) the first year (b) the second year and (c) the two storage years was applied. The best correlations were obtained during the first year of storage. The results obtained show a clear MR evolution during the storage of infant formulas. Copyright © 2003 Society of Chemical Industry  相似文献   
80.
The meaning of migrant housing materiality has not been adequately researched, especially when compared to the meaning of the home for immigrants, a matter of extensive discussion in the past two decades. This paper focuses on the meaning of housing materiality for 12 immigrants who migrated from Morocco to Israel some 60?years ago. Drawing on qualitative data gathered in 2007 and 2008, the paper develops a theoretical framework considering “house as community” and “house materiality” as two interrelating explanations for the migrant housing materiality. Through this framework, and with the concepts of performance and performativity, the paper first explores former houses of participants in Morocco and then presents current houses in Tel Aviv, Israel, to establish links between the two housing forms and reveal the meanings of objects in the homes. It is argued that as a reaction to the dominant Israeli society, housing materiality enables participants to educate successive generations and Israeli society at large about the rich cultural life of Moroccan-Jews that existed before their migration to Israel.  相似文献   
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