How would they choose? Online student preferences for advance course information     

Marco Adria  Andrew Woudstra 《Open Learning》2013,28(3):249-261

Information technology (IT) has become a common component in the process of designing and delivering distance-learning courses of study. Many researchers have addressed the technical and pedagogical issues surrounding IT-enabled or IT-enhanced distance-learning systems. However, studies of the management of the student's learning experience as it is influenced by the emerging virtual organization would assist practitioners and researchers as they seek to understand the important challenges of current practice in distance-learning systems. This paper reports on the operation of a one-window approach to serving students, using the organizational structure and technological innovation of a call centre. Before the call centre was established, it was hypothesized that the call-centre approach would be well suited to routine tasks of supporting student learning. In practice, it was found that most student inquiries were indeed in the category of routine tasks and that only a small proportion of student inquiries could be categorised as uncertain events that required the specialised knowledge of the professor or other academic expert. Implications for the management of other distance learning systems are considered.  相似文献   

A cross-national comparison of perceived strategic importance of RFID for CIOs in Germany and Italy     

Stefanie Leimeister  Jan Marco Leimeister  Uta Knebel  Helmut Krcmar 《International Journal of Information Management》2009

Purpose

Drawing from literature on innovation, strategy and culture the objective of this study is to explore the role of perceived potentials and perceived strategic importance on CIOs’ perspective on RFID technology in two different cultural settings.

Methodology

Based on survey responses from 463 German and 157 Italian IT decision makers we analyzed the data with PLS structural equation modeling.

Findings

We show that perceived potentials of RFID influence the perceived strategic importance which positively influences CIOs’ intention to invest in RFID. The composition of perceived potentials affecting the strategic importance of RFID differs significantly in both cultures. In Germany, potentials attributed to RFID are improving quality, automating manpower, reducing counterfeits, and improving customer service. Italian CIOs value reducing stock inconsistencies, optimizing stock keeping, and improving customer service as RFID potentials. Regardless of culture, findings show that company size hardly has impact on perceived strategic importance.

Originality/value

This research shows on a large empirical basis cultural differences in the perception of RFID in two countries using PLS.  相似文献   

Intellectual property rights,trade agreements,and international trade     

Mercedes Campi  Marco Dueñas 《Research Policy》2019,48(3):531-545

The global process of strengthening and harmonization of intellectual property rights (IPRs) systems has been intensified in the last twenty five years by the signing of trade agreements (TAs) that include chapters with intellectual property (IP) provisions and other trade-related issues. This paper provides a first exploration of whether and how the signing of TAs with IP chapters influences bilateral trade flows for a balanced panel of 110 countries and the period 1995–2013. We address methodological issues related to the assessment of the effect of TAs on bilateral trade. We use matching econometrics to evaluate the treatment of TAs with and without IP chapters. In addition, we estimate the effects of TAs on bilateral trade in a more dynamic fashion using a panel data approach based on the gravity model. Also, we perform our analysis for trade in low- and high-IP intensive products. We found that both types of TAs increase bilateral trade but TAs with no IPRs chapters have a stronger positive effect on trade. However, if we include lags to consider that TAs with IP chapters might need a longer implementation time, the net expected increase on trade is similar for both types of TAs. We also found that the effects depend on the development level of countries and on the IP intensity of products. We found a clear positive effect for developed countries, but we do not observe important gains for developing countries in all sectors and to all destinations derived from TAs with IP chapters. This raises the question of whether trade gains can compensate the effort related with IP reforms.  相似文献   

Accuracy of human motion capture systems for sport applications; state-of-the-art review     

Eline van der Kruk  Marco M. Reijne 《European Journal of Sport Science》2018,18(6):806-819

Objective: Sport research often requires human motion capture of an athlete. It can, however, be labour-intensive and difficult to select the right system, while manufacturers report on specifications which are determined in set-ups that largely differ from sport research in terms of volume, environment and motion. The aim of this review is to assist researchers in the selection of a suitable motion capture system for their experimental set-up for sport applications. An open online platform is initiated, to support (sport)researchers in the selection of a system and to enable them to contribute and update the overview. Design: systematic review; Method: Electronic searches in Scopus, Web of Science and Google Scholar were performed, and the reference lists of the screened articles were scrutinised to determine human motion capture systems used in academically published studies on sport analysis. Results: An overview of 17 human motion capture systems is provided, reporting the general specifications given by the manufacturer (weight and size of the sensors, maximum capture volume, environmental feasibilities), and calibration specifications as determined in peer-reviewed studies. The accuracy of each system is plotted against the measurement range. Conclusion: The overview and chart can assist researchers in the selection of a suitable measurement system. To increase the robustness of the database and to keep up with technological developments, we encourage researchers to perform an accuracy test prior to their experiment and to add to the chart and the system overview (online, open access).  相似文献   

Development,construct validity and test–retest reliability of a field-based wheelchair mobility performance test for wheelchair basketball     

Annemarie M. H. de Witte  Marco J. M. Hoozemans  Monique A. M. Berger  Rienk M. A. van der Slikke  Lucas H. V. van der Woude  Dirkjan Veeger 《Journal of sports sciences》2018,36(1):23-32

The aim of this study was to develop and describe a wheelchair mobility performance test in wheelchair basketball and to assess its construct validity and reliability. To mimic mobility performance of wheelchair basketball matches in a standardised manner, a test was designed based on observation of wheelchair basketball matches and expert judgement.

Forty-six players performed the test to determine its validity and 23 players performed the test twice for reliability. Independent-samples t-tests were used to assess whether the times needed to complete the test were different for classifications, playing standards and sex. Intraclass correlation coefficients (ICC) were calculated to quantify reliability of performance times.

Males performed better than females (P < 0.001, effect size [ES] = ?1.26) and international men performed better than national men (P < 0.001, ES = ?1.62). Performance time of low (≤2.5) and high (≥3.0) classification players was borderline not significant with a moderate ES (P = 0.06, ES = 0.58). The reliability was excellent for overall performance time (ICC = 0.95).

These results show that the test can be used as a standardised mobility performance test to validly and reliably assess the capacity in mobility performance of elite wheelchair basketball athletes. Furthermore, the described methodology of development is recommended for use in other sports to develop sport-specific tests.  相似文献   

Secondary students’ modelling conceptualisation in situations related to particle dynamics: a clinical perspective     

Juliana Machado  Marco Braga 《International Journal of Science Education》2018,40(13):1606-1628

This study investigates the modelling conceptualisation of secondary school students in two situations related to particle dynamics: pendulum’s motion and horizontal motion. We performed in-depth clinical interviews with secondary school students (N?=?10). Participants’ ideas about properties which are not ‘given’ in empirical observations were explored in order to investigate signs of abstractions and idealisations in their reasoning processes. We proposed contributions to modelling in science education based on Mario Bunge’s epistemology and we employed his basic concepts as the axis to analyse our results: (1) abstractions and idealisations, considered as thought processes required to build conceptual counterparts of concrete objects; (2) theoretical models, meaning hypothetico-deductive systems concerning those conceptual objects; and (3) general theoretical frameworks that allow us to derive those theoretical models. We developed our analysis viewing the ideas presented by participants as concepts-in-action and theorems-in-action as regarded by Gérard Vergnaud’s Theory of Conceptual Fields. Results indicated a gradation in the concepts-in-action mobilised in terms of levels of idealisation and showed that participants do not spontaneously recognise the use of a general theory as a possible way to obtain a theoretical model. These results suggest that science education practices must pay better attention to make abstractions and idealisations explicit in scientific concepts formation, as well as to the heuristic role of theories in model construction.  相似文献   

Push-off forces in elite short-track speed skating     

Eline van der Kruk  Marco M. Reijne  Bjorn de Laat  DirkJan Veeger 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(5):527-538

This study performed an analysis of the push-off forces of elite-short-track speed skaters using a new designed instrumented short-track speed skate with the aim to improve short-track skating performance. Four different skating strokes were distinguished for short-track speed skaters at speed. The strokes differed in stroke time, force level in both normal and lateral directions, and the centre of pressure (COP) on the blade. Within the homogeneous group of male elite speed skaters (N = 6), diversity of execution of the force patterns in the four phases of skating was evident, while skating at the same velocities. The male participants (N = 6) with a better personal record (PR) kept the COP more to the rear of their blades while hanging into the curve (r = 0.82, p < 0.05), leaving the curve (r = 0.86, p < 0.05), and entering the straight (r = 0.76, p < 0.10). Furthermore, the male skaters with a better PR showed a trend of a lower lateral peak force while entering the curve (r = 0.74, p < 0.10). Females showed a trend towards applying higher body weight normalised lateral forces than the males, while skating at imposed lower velocities.  相似文献   

Erratum to: Nudging museums attendance: a field experiment with high school teens     

Patrizia Lattarulo  Marco Mariani  Laura Razzolini 《Journal of Cultural Economics》2017,41(3):279-281

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The role of meta-cognitive cues on the comprehension of proficient and poor readers     

Christian Soto  Antonio P. Gutierrez de Blume  Macarena Andrea Carrasco Bernal  Marco Antonio Contreras Castro 《Journal of Research in Reading》2020,43(3):272-289

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Identification of a nonlinear dynamic biological model using the dominant parameter selection method     

Ilya Ioslovich  Marco Ivan Ramirez-Sosa Moran 《Journal of The Franklin Institute》2010,347(6):1001-1014

The identification of nonlinear models sometimes encounters problems because of the limited amount of available measurements in combination with a large number of uncertain model parameters to be identified. E.g., the determination of the chemical composition of a lettuce crop is a rather expensive procedure; thus the number of experimental measurements is limited. As a result, the number of parameters of the dynamic model that can be successively identified is also limited, and the subset of the parameters to be identified must be chosen in a reasonable way.Parameter estimation for an extended nonlinear three-state model for lettuce growth in greenhouses is presented in this paper. The varying structural nitrogen concentration and water contents are the new elements included in the model. The dominant parameter selection (DPS) method was used to select a suitable set of identifiable parameters. The resulting calibrated model predicts quite well the experimental data which also include observations with severe nitrogen stress.  相似文献