Previous research has found that adding pictures to either text-based learning- or testing-materials has beneficial effects (i.e., multimedia effects in learning and testing). However, a potential ...interaction of multimedia effects in learning and in testing has scarcely been the focus of research so far. Accordingly, in the present experiment, N = 129 university students received text-based material that was either complemented by pictures both in learning and testing (P-P), only in learning and not in testing (P-T), in testing but not in learning (T-P), or not at all (T-T). Students performed better in the P-P condition than in the other three conditions (P-T, T-P, T-T). Differences between the latter three conditions were not significant. Thus, pictures needed to be present in both learning and testing to foster students' performance. Nonetheless, pictures boosted students’ confidence even if performance was not actually improved, thereby underlining the risk of picture-induced metacognitive bias.
•We investigated interactions of multimedia effects in learning and testing.•Pictures in learning were only helpful when pictures were also available in testing.•Pictures boosted students' confidence in their performance (multimedia heuristic).•Using multimedia incurred the risk of inflating metacognitive judgments.
Flexible firm Jakob Krause-Jensen
2010., 20100915, 2010, 2010-09-15, 20100101
eBook
Bang & Olufsen, the famous Danish producer of high-end home electronics, is well known as an early exponent of value-based management: the idea that there should be consistency in what the ...organisation does, a certain continuity between what the company develops and sells, and the beliefs and practices of the employees. This study investigates how company values are communicated and the collective identity is articulated through the use of such concepts as ‘culture’, ‘fundamental values’, and ‘corporate religion’, as well as how employees negotiate these ideas in their daily working lives. As this book reveals, the identification of values, meant to create cohesion and solidarity among employees, came to symbolise and engender a split between the staff and the other parts of the company. By examining the rise and fall of the value-based management approach, this volume offers the indispensible insight of anthropological enquiry to expose how social realities challenge conventional management strategies and therefore must be considered in the development of new management techniques.
This paper introduces an intelligent multimedia information system, which exploits machine learning and database technologies. The system extracts semantic contents of videos automatically by using ...the visual, auditory and textual modalities, then, stores the extracted contents in an appropriate format to retrieve them efficiently in subsequent requests for information. The semantic contents are extracted from these three modalities of data separately. Afterwards, the outputs from these modalities are fused to increase the accuracy of the object extraction process. The semantic contents that are extracted using the information fusion are stored in an intelligent and fuzzy object-oriented database system. In order to answer user queries efficiently, a multidimensional indexing mechanism that combines the extracted high-level semantic information with the low-level video features is developed. The proposed multimedia information system is implemented as a prototype and its performance is evaluated using news video datasets for answering content and concept-based queries considering all these modalities and their fused data. The performance results show that the developed multimedia information system is robust and scalable for large scale multimedia applications.
This book is complete four fully playable games including platform, bat & ball, mouse-clicker, and side-scrolling shoot-em up, games. Other chapters cover more complex game features such as porting ...the game onto the Web, distribution, and publishing. --
Signals (or cues) are added to multimedia learning materials to guide learners’ attention to critical elements of the materials. Yet, research on signaling has produced mixed findings on learning ...outcomes. On the one hand, some studies have reported positive effects of signaling on the performance of learning outcomes (e.g., Jamet in Hum Behav 32:47–53,
https://doi.org/10.1016/j.chb.2013.11.013
, 2014). On the other hand, some studies have found that signaling did not improve performance on learning-related outcomes (e.g., Mayer and DaPra in J Exp Psychol 18(3):239–252,
https://doi.org/10.1037/a002861670
, 2012). The present meta-analysis seeks to (a) resolve the mixed findings in signaling research, (b) examine the effects on signaling on learning outcomes, and (c) identify potential moderating variables. Following an exhaustive search for studies meeting specified design criteria, 44 independent effect sizes were extracted from 29 experimental studies involving 2726 participants. Studies were coded on features, such as participants (e.g., grade level), presentation (e.g., pacing), and methodology (e.g., quality of the study). Results indicated that signaling is associated with increased learning outcomes (
d
= .38,
p
< .01), with effect sizes varying from small to large. This overall effect was moderated by study, participant, presentation, and methodological features. For example, beneficial effects on learning outcomes were found when studies were high in quality, reported the reliability of outcomes, use pretest, and control for differences in prior knowledge. The findings have significant implications for educators and instructional designers as well as for multimedia researchers.
Presents information on the 19th International Conference on Mobile and Ubiquitous Multimedia (MUM 2020) that took place from November 22, 2020, to November 25, 2020.
Device-to-device (D2D) communications bring significant benefits to mobile multimedia services in local areas. However, these potential advantages hinge on intelligent resource sharing between ...potential D2D pairs and cellular users. In this paper, we study the problem of energy-efficient uplink resource sharing over mobile D2D multimedia communications underlaying cellular networks with multiple potential D2D pairs and cellular users. We first construct a novel analytical model of energy efficiency for different sharing modes, which takes into account quality-of-service (QoS) requirements and the spectrum utilization of each user. Then, we formulate the energy-efficient resource sharing problem as a nontransferable coalition formation game, with the characteristic function that accounts for the gains in terms of energy efficiency and the costs in terms of mutual interference. Moreover, we develop a distributed coalition formation algorithm based on the merge-and-split rule and the Pareto order. The distributed solution is characterized through novel stability notions and can be adapted to user mobility. From it, we obtain the energy-efficient sharing strategy on joint mode selection, uplink reusing allocation, and power management. Extensive simulation results are provided to demonstrate the effectiveness of our proposed game model and algorithm.
PDF
