SmartRolling: A human–machine interface for wheelchair control using EEG and smart sensing techniques     

《Information processing & management》2023,60(3):103262

Smart wheelchairs based on brain–computer interface (BCI) have been widely utilized recently to address certain mobility problems for people with disability. In this paper, we present SmartRolling, an intuitive human–machine interaction approach for the direct control of robotic wheelchair that jointly leverages EEG signals and motion sensing techniques. Specifically, SmartRolling offers two wheelchair-actuation modes for users with different physical conditions: (1) head motion only — people who are severely disabled but able to do basic tasks using eyes and head, and (2) head and hands motion — in addition to type 1, people who can use functioning hands/arms for extra tasks. The system issues operation commands by recognizing different EEG patterns elicited by motor execution (ME) tasks including eye blink, jaw clench, and fist open/close, while at the same time estimates users’ steering intentions based on their facing direction by leveraging inertial measurements and computer vision techniques. The experiment results demonstrate that the proposed system is robust and effective to meets the individual’s needs and has great potential to promote better health.  相似文献   

Smart cities: Advances in research—An information systems perspective     

《International Journal of Information Management》2019

Smart cities employ information and communication technologies to improve: the quality of life for its citizens, the local economy, transport, traffic management, environment, and interaction with government. Due to the relevance of smart cities (also referred using other related terms such as Digital City, Information City, Intelligent City, Knowledge-based City, Ubiquitous City, Wired City) to various stakeholders and the benefits and challenges associated with its implementation, the concept of smart cities has attracted significant attention from researchers within multiple fields, including information systems. This study provides a valuable synthesis of the relevant literature by analysing and discussing the key findings from existing research on issues related to smart cities from an Information Systems perspective. The research analysed and discussed in this study focuses on number of aspects of smart cities: smart mobility, smart living, smart environment, smart citizens, smart government, and smart architecture as well as related technologies and concepts. The discussion also focusses on the alignment of smart cities with the UN sustainable development goals. This comprehensive review offers critical insight to the key underlying research themes within smart cities, highlighting the limitations of current developments and potential future directions.  相似文献   

Intermediation in public procurement of innovation: How Amsterdam’s startup-in-residence programme connects startups to urban challenges     

《Research Policy》2019,48(9):103789

This paper analyses Amsterdam’s Startup-in-Residence (SiR) programme as new type of policy to engage startups in the development of urban innovation through a challenge-based public procurement of innovation (PPI) process. The programme is being mimicked by other cities and government agencies, but so far there has not been a rigorous, theoretically-informed analysis of the approach. In this paper, we specify and focus on the role of city-based, public-affiliated intermediaries as initiators, moderators and influencers of conversations between startups and the local government. The main contribution of SiR as a PPI intermediation programme has been to launch new types of fruitful conversations on several levels, that lead to institutional innovations rather than direct solutions for urban problems or startup development. In this sense, SiR fulfils a role inquiring and ascribing urban challenges with values and notions of “worth” that preceded and shaped innovation directions. We also suggest that engaging startups is effective for only a limited bandwidth urban challenges; different types of intermediation are required to foster collaborative innovation in more complex settings.  相似文献   

Coordinating scaffolds for collaborative inquiry in a game-based learning environment     

Asmalina Saleh  Chen Yuxin  Cindy E. Hmelo-Silver  Krista D. Glazewski  Bradford W. Mott  James C. Lester 《科学教学研究杂志》2020,57(9):1490-1518

Collaborative inquiry learning affords educators a context within which to support understanding of scientific practices, disciplinary core ideas, and crosscutting concepts. One approach to supporting collaborative science inquiry is through problem-based learning (PBL). However, there are two key challenges in scaffolding collaborative inquiry learning in technology rich environments. First, it is unclear how we might understand the impact of scaffolds that address multiple functions (e.g., to support inquiry and argumentation). Second, scaffolds take different forms, further complicating how to coordinate the forms and functions of scaffolds to support effective collaborative inquiry. To address these issues, we identify two functions that needed to be scaffolded, the PBL inquiry cycle and accountable talk. We then designed predefined hard scaffolds and just-in-time soft scaffolds that target the regulation of collaborative inquiry processes and accountable talk. Drawing on a mixed method approach, we examine how middle school students from a rural school engaged with Crystal Island: EcoJourneys for two weeks (N=45). Findings indicate that hard scaffolds targeting the PBL inquiry process and soft scaffolds that targeted accountable talk fostered engagement in these processes. Although the one-to-one mapping between form and function generated positive results, additional soft scaffolds were also needed for effective engagement in collaborative inquiry and that these soft scaffolds were often contingent on hard scaffolds. Our findings have implications for how we might design the form of scaffolds across multiple functions in game-based learning environments.  相似文献   

Committee standards battles in the era of convergence: Implications for smart systems     

《International Journal of Information Management》2021

By now, there have been many standards battles fought within the same industry or by multiple industries in the market-based standardization. In these battles, incompatible standards compete to win market dominance. While there is some research on standards battles found within a single committee, competitions in the committee-based standardization between standards from different committees or SDOs are underexplored. This paper categorizes the types of standards battles by the mode of standardization and the heterogeneity of actors. A new type referred to as ‘committee standards battles for converging systems’ is introduced and the dynamics of such battles is explored with two cases. The battle between the electric vehicle charging and the smart meter communication standard and the battle between two different vehicle-to-everything (V2X) communication standards are analyzed. The failure in achieving compatibility between different committee standards on the same frequency bands results in communication interference that adversely affects the operation of smart systems. Social incompatibilities between actors and alliances from a mix of industries with vested interests towards a particular standard complicate the battling scene. The findings provide implications in terms of heterogeneity, actors, and government role in standards battles.  相似文献   

Machine learning based system for managing energy efficiency of public sector as an approach towards smart cities     

《International Journal of Information Management》2021

Energy efficiency of public sector is an important issue in the context of smart cities due to the fact that buildings are the largest energy consumers, especially public buildings such as educational, health, government and other public institutions that have a large usage frequency. However, recent developments of machine learning within Big Data environment have not been exploited enough in this domain. This paper aims to answer the question of how to incorporate Big Data platform and machine learning into an intelligent system for managing energy efficiency of public sector as a substantial part of the smart city concept. Deep neural networks, Rpart regression tree and Random forest with variable reduction procedures were used to create prediction models of specific energy consumption of Croatian public sector buildings. The most accurate model was produced by Random forest method, and a comparison of important predictors extracted by all three methods has been conducted. The models could be implemented in the suggested intelligent system named MERIDA which integrates Big Data collection and predictive models of energy consumption for each energy source in public buildings, and enables their synergy into a managing platform for improving energy efficiency of the public sector within Big Data environment. The paper also discusses technological requirements for developing such a platform that could be used by public administration to plan reconstruction measures of public buildings, to reduce energy consumption and cost, as well as to connect such smart public buildings as part of smart cities. Such digital transformation of energy management can increase energy efficiency of public administration, its higher quality of service and healthier environment.  相似文献   

国外智慧城市视阈下的数字档案研究热点概览     

刘坤锋  庞宇飞  郑雪丽  刘永 《档案管理》2020,(3):101-103

本文对国外智慧城市视阈下的数字档案研究热点文献进行梳理,介绍了数字档案检索优化服务、数字档案交互性和可视化服务、数据开放与用户参与以及智慧城市专项数字档案处理等方面的理论和应用研究成果。这些研究在面向需求、技术应用和专项融合等方面较为深入且操作性较强,具有借鉴意义。  相似文献   

A microworld-based role-playing game development approach to engaging students in interactive,enjoyable, and effective mathematics learning     

Sheng-Yuan Wang  Shao-Chen Chang  Pei-Ying Chen 《Interactive Learning Environments》2018,26(3):411-423

In traditional teacher-centered mathematics instruction, students might show low learning motivation owing to the lack of applied contexts. Game-based learning has been recognized as a potential approach to addressing this issue; however, without proper alignment between the gaming and math-applied contexts, the benefits of game-based learning could be limited. Therefore, this study aims to develop a microworld-based educational game, which provides simulated contexts encouraging students to explore, discover, and solve practical problems using the mathematics knowledge gained in the class. A quasi-experimental design was implemented in the learning activity of the “Speedy World” unit in an elementary school mathematics course to examine the effectiveness of the proposed approach. A total of 107 sixth graders participated in the experiment. The experimental results showed that the students who learned with the microworld-based gaming approach had better learning achievement and motivation in the mathematics course than those who learned with the conventional technology-enhanced learning approach. In addition, the students also showed that they highly accepted the microworld-based game for learning mathematics. The findings of this study provide good evidence for the importance and necessity of associating authentic applied contexts with gaming contexts in developing computer educational games for mathematics.  相似文献   

Analysis and evaluation of lecturers’ activity in Learning Management Systems: Subjective and objective perceptions     

Magdalena Cantabella  Belén López  Alberto Caballero 《Interactive Learning Environments》2018,26(7):911-923

Learning Management Systems (LMS) have become the principal resource for the distribution of educational material and collaboration among lecturers and students in Higher Education. The potential of these platforms does not limit to a simple manager of contents, but they also offer a wide range of tools that support the development of different methodologies according to the learning modality, namely on-campus, blended or online. This work analyzes the use of LMS and the interactions with their different tools from the lecturers’ point of view, in order to detect possible incidents, check the tools’ utility and evaluate their complexity. All these metrics represent valuable information to the Degree Coordinators, if they are presented in a suitable manner, to detect and resolve deficiencies in the methodology. For the analysis of the teaching activity two methods are employed: (1) surveys, to measure the subjective perception of lecturers when using LMS tools; and (2) visual analysis of the real lecturer’s activity through OnlineData, a graphical analytic tool developed as part of our work to monitor LMS tools metrics. The results of both methods show differences among the perceived self-usage and actual usage, especially for the e-learning methodologies  相似文献   

Exploring,Developing, Facilitating Individual Practice,While Learning to Become a Teacher of Art,Craft and Design          下载免费PDF全文

Carla Mindel 《The International Journal of Art & Design Education》2018,37(2):177-186

The artist teacher project set out to facilitate trainee teachers’ creative practice and inform their critical pedagogy in the classroom. The approach outlined in this article encouraged them to consider predictable and formulaic practice, and to question, reflect upon and challenge orthodoxies in their teaching of art, craft and design. They critically appraised their practice within a community of reflective practitioners in critical presentations, and in their reflective writing, and discussed and debated the contradictory positions between what they explored in their individual practices as artists and that experienced in the classroom. This project highlighted how fundamental the critical presentations were because the peer‐review, feedback and support, facilitated dialogue in a creative, dynamic space and community of practice. These ‘crits’ also became a forum for airing frustrations and trying to come to terms with the re‐emergence of their artist identities while at the same time, having to suppress many of their convictions and ideals in order to conform to what they found on school placement.  相似文献