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61.
Critical thinking in E-learning environments 总被引:1,自引:0,他引:1
One of the primary aims of higher education in today’s information technology enabled classroom is to make students more active in the learning process. The intended outcome of this increased IT-facilitated student engagement is to foster important skills such as critical thinking used in both academia and workplace environments. Critical thinking (CT) skills entails the ability(ies) of mental processes of discernment, analysis and evaluation to achieve a logical understanding. Critical thinking in the classroom as well as in the workplace is a central theme; however, with the dramatic increase of IT usage the mechanisms by which critical thinking is fostered and used has changed. This article presents the work and results of critical thinking in a virtual learning environment. We therefore present a web-based course and we assess in which parts of the course, and to what extent, critical thinking was perceived to occur. The course contained two categories of learning modules namely resources and interactive components. Critical thinking was measured subjectively using the ART scale. Results indicate the significance of “interactivity” in what students perceived to be critical-thinking-oriented versus online material as a resource. Results and opportunities that virtual environments present to foster critical thinking are discussed. 相似文献
62.
Schmitt Neal; Rogers William; Chan David; Sheppard Lori; Jennings Danielle 《Canadian Metallurgical Quarterly》1997,82(5):719
The effects of number of predictors, predictor intercorrelations, validity, and level of subgroup difference on composite validity, adverse impact ratios, and mean subgroup difference associated with various predictor composites, including and excluding a "high impact" ability measure, were assessed. The size of subgroup differences is substantially smaller when low-impact predictors are combined with a high-impact predictor, but hiring ratios for majority and minority groups still indicate a prima facie case of discrimination, using the fourth-fifths rule for most predictor-criterion combinations. However, the validity of a composite of alternate predictors and cognitive ability may exceed the validity of cognitive ability alone and reduce the size of subgroup differences. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
63.
Lehoux Josée; Guay Stéphane; Chartrand élise; Julien Danielle 《Canadian Metallurgical Quarterly》2007,39(4):307
Lack of social support (SS) is one of the most important factors influencing the development and maintenance of post-traumatic stress disorder (PTSD), and people living in couples seek the support of their spouse. To our knowledge, no study on PTSD has used an observational measure of SS in addition of the usual self-report method of measurement. The purpose of this study is to adapt the Social Support Interaction Global Coding System (SCIS) and to explore its psychometric properties using 20 support interactions videotaped with couples among whom a spouse has a PTSD diagnosis. Results suggest that the new SCIS (PTSD) shows satisfactory interrater reliability, good internal consistency and good convergent validity with self-reported measures of perceived support and marital adjustment. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
64.
Meghan E. McGee Danielle L. Miller Seth W. Donahue 《Engineering Fracture Mechanics》2007,74(12):1942-1952
Inactivity causes bone loss, and a remobilization period that is 2-3 times longer than the disuse period is required to recover lost bone. Black bears (Ursus americanus), however, experience annual disuse (hibernation) and active periods that are approximately equal in length, but maintain bone material properties with age. Here, the effects of annual hibernation periods on whole bone properties were investigated. This study shows that mineral, geometrical and whole bone mechanical properties increase with age in black bear femurs, whereas porosity decreases with age. These results provide further support that black bears possess a biological mechanism to avoid disuse osteoporosis. 相似文献
65.
Baril Hélène; Julien Danielle; Chartrand élise; Dubé Monique; Pelland Marie-ève; D'Amico émelie 《Canadian Metallurgical Quarterly》2007,39(1):32
Fifty-seven families with adolescent children participated in a study of a) the quality of family and friendship relationships in adolescence, and b) the quality of family, friendship, and romantic relationships of adolescents 7 years later. Observation measures and self-report questionnaires were used to examine the variables. Regression analyses showed that mothers' marital satisfaction, conjugal conflict, and quality of mother-daughter relationship in adolescence predicted daughters' satisfaction with romantic relationships in adulthood. However, only the parental variables during adolescence predicted the quality of friendship relationships in adulthood. This study highlighted the contribution that quality of family relationships in adolescence makes to the quality of interpersonal relationships in adulthood. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
66.
Danielle R.S. Guerra 《International Journal of Heat and Mass Transfer》2005,48(14):2829-2840
The present work investigates the applicability of scaling log-laws to the turbulent impinging jet. Both, the velocity and the temperature fields are studied under this assumption. To validate the proposed expressions, a detailed experimental program was carried out based on thermal anemometry. The experiments were conducted for one nozzle-to-plate spacing (H/D = 2.0) and Reynolds number of 35,000. A constant wall heat flux condition was achieved by conducting electricity through thin resistors that were placed beneath an aluminum disk. Measurements of local velocity and of temperature distributions are presented as well as longitudinal turbulence profiles. The mean temperature profiles were measured through thermocouples. 相似文献
67.
Sara Susan J.; David-Remacle Michaele; Lefevre Danielle 《Canadian Metallurgical Quarterly》1975,89(5):489
In 3 experiments, a total of 178 male Wistar rats were trained in a one-trial passive avoidance task and then were submitted to electroconvulsive shock (ECS) or to sham ECS. 24 hrs later they were tested for retention, with the door opened either immediately or 30 sec after the beginning of the test. Ss initially forced to avoid for 30 sec continued to avoid for the entire test, but the others had the usual low step-through latencies seen with ECS-treated Ss. Activity measures for those Ss stepping through differentiated groups having received footshock from those not having footshock and ECS. A retest 5-10 min later showed "recovery" in the amnestic Ss and continued avoidance behavior for those that avoided on the first test. Results are taken as evidence that ECS effects are not on memory storage but on the capacity of the animal to organize information effectively and quickly in order to produce an adaptive response. (20 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
68.
Summary From GPC and 1H NMR results, we have shown that block polymers built with acroleine and butadiene units can be synthesized. Moreover, the cross-linkage ability of the acroleine blocks in these products under UV irradiation has been checked. This is very interesting for an industrial application. Indeed, homopolyacroleines can be used as a photopolymer layer to prepare negative or positive printing plates. 相似文献
69.
70.
A mass spectrometry method is presented for the identification of compounds that contain the primary N-oxide functional group. This method utilizes a gas-phase ion-molecule reaction with dimethyl disulfide that rapidly and selectively derivatizes the protonated primary N-oxide functional group in a mass spectrometer to yield an ionic reaction product (with 31 Da higher mass than that of the protonated molecule) that is diagnostic for the presence of a primary N-oxide functionality. A variety of protonated analytes containing different functional groups were tested in Fourier transform ion-cyclotron resonance and triple quadrupole mass spectrometers to probe the selectivity of the reaction. Only molecules containing the protonated primary N-oxide functional group yielded the diagnostic reaction product; all other protonated molecules gave protonated dimethyl disulfide or no reaction products. The feasibility of this method for compound screening was tested by examining six analytes with the same molecular formula but different atom connectivity. The one analyte that contained the primary N-oxide functional group was readily differentiated from the other analytes. 相似文献