The integration of old and new technological paradigms in low- and medium-tech sectors: The case of mechatronics     

Daniela Freddi 《Research Policy》2009,38(3):548-558

This article addresses the internal transformation of low- and medium-tech (LMT) sectors from a technological perspective, analysing the absorption of radical new technologies by low- and medium-technology (LMT) firms and their integration into frameworks dominated by older technologies. Through an empirical analysis of a cluster of mechatronic companies, the paper highlights some of the main features of the integration process and provides a preliminary assessment of whether the phenomenon is more likely to occur within or between companies, that is through the absorption of new technologies by each firm individually or by means of linkages between specialised mono-technology companies.  相似文献   

On the role of user-centred evaluation in the advancement of interactive information retrieval   总被引：1，自引：0，他引：1  

Daniela Petrelli 《Information processing & management》2008

This paper discusses the role of user-centred evaluations as an essential method for researching interactive information retrieval. It draws mainly on the work carried out during the Clarity Project where different user-centred evaluations were run during the lifecycle of a cross-language information retrieval system. The iterative testing was not only instrumental to the development of a usable system, but it enhanced our knowledge of the potential, impact, and actual use of cross-language information retrieval technology. Indeed the role of the user evaluation was dual: by testing a specific prototype it was possible to gain a micro-view and assess the effectiveness of each component of the complex system; by cumulating the result of all the evaluations (in total 43 people were involved) it was possible to build a macro-view of how cross-language retrieval would impact on users and their tasks. By showing the richness of results that can be acquired, this paper aims at stimulating researchers into considering user-centred evaluations as a flexible, adaptable and comprehensive technique for investigating non-traditional information access systems.  相似文献   

GovQual: A quality driven methodology for E-Government project planning     

Carlo Batini  Gianluigi Viscusi  Daniela Cherubini 《Government Information Quarterly》2009

We present a multidisciplinary methodology for E-Government project planning. The set of expertise needed for the design of E-Government systems includes social, juridical, economic, organizational, and technological perspectives. To properly address such a broad range of influences requires a unique vision. Our long-term aim is to use an integrated approach to examine a number of issues which currently present challenges in many E-Government projects. This paper in particular focuses on social and technological aspects of E-Government. The methodology has four phases: (1) state reconstruction, (2) quality assessment, (3) new quality targets definition, and (4) preliminary operational planning. A case study provides evidence of the feasibility and effectiveness of the methodology.  相似文献   

Influences on the Construction of Health News: The Reporting Practices of Local Television News Health Journalists     

Andrea H. Tanner  Daniela B. Friedman  Yue Zheng 《广播与电子媒介杂志》2015,59(2):359-376

Local television news remains a primary news source for Americans and is a key source of consumer health information. This study explores why local television health journalists cover particular topics and assesses why health journalism newsgathering practices often differ from the normative newsgathering practices of general assignment reporters. Fifteen in-depth telephone interviews were conducted with health journalists from varying geographical regions and media markets. Influence from local hospitals and personal interest in a health topic often determined the health content the journalists produced. Journalists said it was difficult to cover health issues in addition to other newsroom responsibilities.  相似文献   

Reflecting geometrical shapes: approaches of primary students to reflection tasks and relations to typical error patterns     

Götz  Daniela  Gasteiger  Hedwig 《Educational Studies in Mathematics》2022,111(1):47-71

Educational Studies in Mathematics - Students’ issues dealing with reflection tasks, especially with inclined mirror lines, are widely known. Previous research conducted with primary school...  相似文献   

The role of spatial ability in mixed reality learning with the HoloLens     

Simon Ho  Pu Liu  Daniela J. Palombo  Todd C. Handy  Claudia Krebs 《Anatomical sciences education》2022,15(6):1074-1085

The use of mixed reality in science education has been increasing and as such it has become more important to understand how information is learned in these virtual environments. Spatial ability is important in many learning contexts, but especially in neuroanatomy education where learning the locations and spatial relationships between brain regions is paramount. It is currently unclear what role spatial ability plays in mixed reality learning environments, and whether it is different compared to traditional physical environments. To test this, a learning experiment was conducted where students learned neuroanatomy using both mixed reality and a physical plastic model of a brain (N = 27). Spatial ability was assessed and analyzed to determine its effect on performance across the two learning modalities. The results showed that spatial ability facilitated learning in mixed reality (β = 0.21, P = 0.003), but not when using a plastic model (β = 0.08, P = 0.318). A non-significant difference was observed between the modalities in terms of knowledge test performance (d = 0.39, P = 0.052); however, mixed reality was more engaging (d = 0.59, P = 0.005) and learners were more confident in the information they learned compared to using a physical model (d = 0.56, P = 0.007). Overall, these findings suggest that spatial ability is more relevant in virtual learning environments, where the ability to manipulate and interact with an object is diminished or abstracted through a virtual user interface.  相似文献   

Spatial abilities during the circalunar cycle in both sexes     

Daniela Ostatníková  Július Hodosy  Martina Skokňová  Zdeněk Putz  Matúš Kúdela  Peter Celec 《Learning and individual differences》2010,20(5):484-487

Spatial abilities vary during the menstrual cycle. The effects of a similar rhythm in men are unknown. Mental rotation and spatial visualization of young healthy volunteers (29 females and 31 males) were tested during the menstrual and periovulatory phase of the menstrual cycle in women, and during the low-testosterone and high-testosterone phases of the circatrigintan rhythm in men in random order. Men outperformed women in both tests. In women, higher scores were achieved during the periovulatory phase, in men during the low-testosterone phase. The correlation between actual salivary testosterone levels and spatial abilities were positive in women and negative in men. According to our knowledge, this is the first study showing effects of a male infradian rhythm on cognitive abilities.  相似文献   

Moving toward a grand theory of development: in memory of Esther Thelen     

Spencer JP  Clearfield M  Corbetta D  Ulrich B  Buchanan P  Schöner G 《Child development》2006,77(6):1521-1538

This paper is in memory of Esther Thelen, who passed away while President of the Society for Research in Child Development. A survey of Esther Thelen's career reveals a trajectory from early work on simple movements like stepping, to the study of goal-directed reaching, to work on the embodiment of cognition, and, ultimately, to a grand theory of development--dynamic systems theory. Four central concepts emerged during her career: (1) a new emphasis on time; (2) the proposal that behavior is softly assembled from the interaction of multiple subsystems; (3) the embodiment of perception, action, and cognition; and (4) a new respect for individuality. Esther Thelen communicated these ideas to scientists and practitioners alike, so the ultimate benefactors of her work were children.  相似文献   

Factors Affecting Students' Acceptance of Tablet PCs: A Study in Italian High Schools     

Stefano Cacciamani  Daniela Villani  Andrea Bonanomi  Claudia Carissoli  Maria Giulia Olivari  Laura Morganti 《Journal of Research on Technology in Education》2018,50(2):120-133

To maximize the advantages of the tablet personal computer (TPC) at school, this technology needs to be accepted by students as new tool for learning. With reference to the Technology Acceptance Model and the Unified Theory of Acceptance and Use of Technology, the aims of this study were (a) to analyze factors influencing high school students' acceptance of TPCs and (b) to detect any difference in this influence considering the frequency of TPC use, students' gender, and school grade. Two hundred and ninety-six students from six high schools in the Milan area participated in the study. Data were collected using an online survey. The results showed that empowerment in learning, perceived usefulness, and support conditions affect learning use, and empowerment in learning and affect influence communicative use of TPCs. The implications of these results are discussed. (Keywords: tablets, acceptance, digital technologies, high school, path analysis)  相似文献