Supervision of master theses based on Scrum: A case study     

Tomás  Gonçalo  Mira da Silva  Miguel  Bidarra  José 《Education and Information Technologies》2021,26(4):3721-3741

Education and Information Technologies - The success rate of a master program on Information Systems and Computer Engineering (MEIC) in a Portuguese university is very unsatisfactory, showing that...  相似文献   

A distributed systems laboratory that helps students accomplish their assignments through self-regulation of behavior     

Daradoumis  Thanasis  Marquès Puig  Joan Manuel  Arguedas  Marta  Calvet Liñan  Laura 《Educational technology research and development : ETR & D》2021,69(2):1077-1099

Educational technology research and development - Recent research has shown a great interest in supporting self-regulated learning (SRL) strategies in online learning. However, there is hardly any...  相似文献   

Item position effects in listening but not in reading in the European Survey of Language Competences     

Christiansen  Andrés  Janssen  Rianne 《Educational Assessment, Evaluation and Accountability》2021,33(1):49-69

Educational Assessment, Evaluation and Accountability - In contrast with the assumptions made in standard measurement models used in large-scale assessments, students’ performance may change...  相似文献   

Technological assessment of external effects     

P.F. Tenière-Buchot 《Research Policy》1973,2(1):18-39

After a review of external effects, the author shows how a quantification of the water pollution problem has been implemented in a French river basin organisation. Linked to the techniques of systems analysis, this technological assessment consists firstly of searching for a water pollution ‘Social’ indicator, termed the ‘base’ and secondly, of introducing through a ‘rate’ the social cost of that base. The first phase of work is the choice of criteria, their weighting and the designation of an aggregate type of criteria. The second phase is the search for a metric in the sub-space formed by the preceding criteria and the application of that sub-space in the general economic space. A rate can then be deduced as the result of:—long-term political considerations, limited by the maximum contribution capabilities of users and by state-of-the-art performances.—short-term political considerations on the incentive nature of the system.—The relations between technological assessment and conventional marginal calculations are afterwards mentioned and their complementarity is underlined. Finally, indications are given of the prospects for the original approach  相似文献   

User-model based personalized summarization   总被引：3，自引：0，他引：3  

Alberto Díaz  Pablo Gervs 《Information processing & management》2007,43(6):1715

The potential of summary personalization is high, because a summary that would be useless to decide the relevance of a document if summarized in a generic manner, may be useful if the right sentences are selected that match the user interest. In this paper we defend the use of a personalized summarization facility to maximize the density of relevance of selections sent by a personalized information system to a given user. The personalization is applied to the digital newspaper domain and it used a user-model that stores long and short term interests using four reference systems: sections, categories, keywords and feedback terms. On the other side, it is crucial to measure how much information is lost during the summarization process, and how this information loss may affect the ability of the user to judge the relevance of a given document. The results obtained in two personalization systems show that personalized summaries perform better than generic and generic-personalized summaries in terms of identifying documents that satisfy user preferences. We also considered a user-centred direct evaluation that showed a high level of user satisfaction with the summaries.  相似文献   

Remembering me: big data,individual identity,and the psychological necessity of forgetting     

Jacquelyn?Ann?BurkellEmail authorView author&#;s OrcID profile 《Ethics and Information Technology》2016,18(1):17-23

Each of us has a personal narrative: a story that defines us, and one that we tell about ourselves to our inner and outer worlds. A strong sense of identity is rooted in a personal narrative that has coherence and correspondence (Conway in J Mem Lang 53:594–628, 2005): coherence in the sense that the story we tell is consistent with and supportive of our current version of ‘self’; and correspondence in the sense that the story reflects the contents of autobiographical memory and the meaning of our experiences. These goals are achieved by a reciprocal interaction of autobiographical memory and the self, in which memories consistent with the self-image are reinforced, in turn strengthening the self-image they reflect. Thus, personal narratives depend crucially on the malleable nature of autobiographical memory: a strong sense of self requires that one remember what matters, and forget what does not. Today, anyone who is active online generates a highly detailed, ever—expanding, and permanent digital biographical ‘memory’—memory that identifies where we go, what we say, who we see, and what we do in increasing detail as our physical lives become more and more enmeshed with electronic devices capable of recording our communications, online activities, movements, and even bodily functions. This paper explores the consequences of this digital record for identity, arguing that it presents a challenge to our ability to construct our own personal narratives–narratives that are central to a sense of ‘self’. In the end, the ‘right to be forgotten’ may be, above all else, a psychological necessity that is core to identity—and therefore a value that we must ensure is protected.  相似文献   

Robust stability analysis of formation control in local frames under time-varying delays and actuator faults     

Antonio González  Miguel Aranda  Gonzalo López-Nicolás  Carlos Sagüés 《Journal of The Franklin Institute》2019,356(2):1131-1153

This paper investigates the robust stability of a multiagent system moving to a desired rigid formation in presence of unknown time-varying communication delays and actuator faults. Each agent uses relative position measurements to implement the proposed control method, which does not require common coordinate references. However, the presence of time delays in the measurements, which is inherent to the communication links between agents, has a negative impact in the control system performance leading, in some cases, to instability. Furthermore, the robust stability analysis becomes more complex if failures on actuators are taken into account. In addition, delays may be subject to time variations, depending on network load, availability of communication resources, dynamic routing protocols, or other environmental conditions. To cope with these problems, a sufficient condition based on Linear Matrix Inequalities (LMI) is provided to ensure the robust asymptotic convergence of the agents to the desired formation. This condition is valid for any arbitrarily fast time-varying delays and actuator faults, given a worst-case point-to-point delay. Finally, simulation results show the performance of the proposed approach.  相似文献   

Towards system oriented innovation policy evaluation? Evidence from EU28 member states     

Susana Borrás  Mart Laatsit 《Research Policy》2019,48(1):312-321

Many years after the introduction of the innovation system concept in innovation policy design, it is still not clear whether innovation policy evaluation practices follow a system approach. Building on evaluation and innovation studies, this article develops the concept ‘system oriented innovation policy evaluation’ based on four attributes (coverage, perspective, temporality and expertise). The attributes are used as analytical devices for gathering extensive empirical evidence on the actual practices of EU28 member states. The findings show that few countries have developed a type of innovation policy evaluation that is system oriented. The advent of a system approach to innovation policy evaluation offers the opportunity of comprehensive, contextualized and evidence-based innovation policy-making. However, there are still serious obstacles as such an approach requires important knowledge and organisational capacities. Overcoming these obstacles would need more decided evaluation capacity-building at the national level.  相似文献   

User-centred versus system-centred evaluation of a personalization system     

Alberto Díaz  Antonio García  Pablo Gervás 《Information processing & management》2008

Some of the most popular measures to evaluate information filtering systems are usually independent of the users because they are based in relevance judgments obtained from experts. On the other hand, the user-centred evaluation allows showing the different impressions that the users have perceived about the system running. This work is focused on discussing the problem of user-centred versus system-centred evaluation of a Web content personalization system where the personalization is based on a user model that stores long term (section, categories and keywords) and short term interests (adapted from user provided feedback). The user-centred evaluation is based on questionnaires filled in by the users before and after using the system and the system-centred evaluation is based on the comparison between ranking of documents, obtained from the application of a multi-tier selection process, and binary relevance judgments collected previously from real users. The user-centred and system-centred evaluations performed with 106 users during 14 working days have provided valuable data concerning the behaviour of the users with respect to issues such as document relevance or the relative importance attributed to different ways of personalization. The results obtained shows general satisfaction on both the personalization processes (selection, adaptation and presentation) and the system as a whole.  相似文献   

Une introduction non classique aux algorithmes d'addition et de soustraction     

Cathy Arsenault  Gisèle Lemoyne 《Educational Studies in Mathematics》2000,42(3):269-296

The aim of our study was to analyze a didactical sequence for the teaching of addition and subtraction procedures and algorithms. In the conception of that sequence, we have taken into account diagnostic and repair models for procedural bugs in addition and subtraction algorithms, as well as learning and teaching methods for multi digit additions and subtractions. The didactical sequence included situations involving many of the characteristics associated with procedural bugs; however, when the children encountered those situations they had many conceptual tools to detect their mistakes and correct them, giving that way a meaning to the actions made in addition and subtraction procedures and algorithms. Our teaching activities were submitted to second grade school children (7–8 years old). The didactical interactions and the procedures used by children in problem solving activities were analyzed in order to get a better understanding of the interaction between numbers, numeration and operations knowledge which are involved in the construction of addition and subtraction procedures and algorithms and to relate children's knowledge acquisition to the didactical situations. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献