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1 – 10 of 78Zhonglai Tian, Hongtai Cheng, Zhenjun Du, Zongbei Jiang and Yeping Wang
The purpose of this paper is to estimate the contact-consistent object poses during contact-rich manipulation tasks based only on visual sensors.
Abstract
Purpose
The purpose of this paper is to estimate the contact-consistent object poses during contact-rich manipulation tasks based only on visual sensors.
Design/methodology/approach
The method follows a four-step procedure. Initially, the raw object poses are retrieved using the available object pose estimation method and filtered using Kalman filter with nominal model; second, a group of particles are randomly generated for each pose and evaluated the corresponding object contact state using the contact simulation software. A probability guided particle averaging method is proposed to balance the accuracy and safety issues; third, the independently estimated contact states are fused in a hidden Markov model to remove the abnormal contact state observations; finally, the object poses are refined by averaging the contact state consistent particles.
Findings
The experiments are performed to evaluate the effectiveness of the proposed methods. The results show that the method can achieve smooth and accurate pose estimation results and the estimated contact states are consistent with ground truth.
Originality/value
This paper proposes a method to obtain contact-consistent poses and contact states of objects using only visual sensors. The method tries to recover the true contact state from inaccurate visual information by fusing contact simulations results and contact consistency assumptions. The method can be used to extract pose and contact information from object manipulation tasks by just observing the demonstration, which can provide a new way for the robot to learn complex manipulation tasks.
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Raúl Alberto Mora, Juan Diego Martínez, Liliana Alzate-Pérez, Raúl Gómez-Yepes and Laura Mildrey Zapata-Monsalve
This chapter presents the results of the collective experience of two professors and three students in implementing WebQuests in a preservice English education component…
Abstract
This chapter presents the results of the collective experience of two professors and three students in implementing WebQuests in a preservice English education component. The first part of the chapter provided a definition of WebQuests, situating this particular proposal within the literature on second language education and the Colombian and Latin American contexts. The authors found that the paucity of studies on designing WebQuests, specifically in Latin America, became one of the strengths of their work. The next section situated how implementing WebQuests in this preservice program enabled an expansion of the actual conceptual framework that is currently in place for WebQuests by adding ideas about competences and socio-cultural and critical thinking theories. However, there is an explanation about how WebQuests became a very feasible alternative to respond to the curricular demands of their institution. Next, the authors shared a multi-vocal account, from every author's vantage point, of how they carried out their work with WebQuests. This implementation process generated a series of changes in the way students saw themselves as learners and future teachers, gaining more ownership of the idea of WebQuests beyond a semester assignment. The instructors, as the result of their work, are now thinking of better ways to redefine how they use WebQuests and how they will get their other cohorts involved in collaborative academic efforts. This chapter is, then, not only an account of an experience, but an invitation to think about how to expand the boundaries of preservice teacher education through technological mediation.
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Ante Mandić and Daniela Garbin Praničević
This paper aims to analyse the role of information and communication technologies (ICTs) in establishing destination appeal and reflect on the implications for smart…
Abstract
Purpose
This paper aims to analyse the role of information and communication technologies (ICTs) in establishing destination appeal and reflect on the implications for smart tourism destination development. The focus is on identifying and analysing technological solutions by considering six elements shaping tourism destination appeal, namely, attractions, public and private amenities, accessibility, human resources, image and character and price.
Design/methodology/approach
To deliver public and private sector implications, the authors have reviewed and analysed relevant papers that were published in hospitality and tourism journals (42 Q1 and Q2 ranked journals based on SCImago Journal Rank) between 2010 and 2018.
Findings
ICTs affect the marketing and management of tourism destinations. They foster their innovativeness (e.g. interpretation of destination factors, new travel trends, innovative products, VA and AR), contribute sustainability (e.g. visitor management and reducing the use of resources) and improve accessibility (e.g. information provision, navigation, availability of sites and travel planning). The adaptation of technological solutions in the hospitality industry can be related to increased productivity, profitability and quality of services. Additionally, ICTs facilitate visitor decision-making (e.g. online distribution channels and information accessibility), influence overall travel experience and enable the sharing of visitors’ impressions.
Research limitations/implications
The significant limitations of this study include restrictions on the timing of publication and on journal selection.
Originality/value
This paper reviews full-length research papers that were published in relevant tourism and hospitality journals. This paper complements the current literature by addressing the role of ICTs in establishing destination appeal and reflecting on implications for smart destination development and future research.
研究目的和设计
本论文分析了ICT在搭建旅游目的地吸引力方面的作用, 并对智慧旅游目的地发展提出启示。本论文重点在于考量六种搭建旅游目的地吸引力的因素:景点、公共和个人设施、可参观性、人力资源、形象和性格、以及价格, 并分析了各种科技解决方案。
研究方法
为了给公众和私人企业提出启示, 本论文审阅并分析了发表在2010年至2018年之间的酒店旅游相关期刊文献(42Q1和Q2级别的SCImago期刊排名)。
研究结构
信息通讯技术(ICTs)影响了旅游目的地的营销和管理。ICT促进了多种创新(比如, 目的地因素的解读、新旅游趋势、创新型产品、VA\AR), 增强可持续性(比如, 游客管理和减少资源耗损)以及提高可参观性(比如, 信息提供、导航、景点信息、旅游规划等)。酒店业中的科技应用促进了生产力提高、营利性、和服务质量。此外, ICT帮助游客做旅游决策(比如, 在线分销渠道和信息获取), 影响了整体旅游体验, 和增强了游客分享游历经验。
研究原创性/价值
本论文审阅了旅游酒店期刊相关科研文章, 强调了建立旅游目的地吸引力中ICT的重要性, 以及对未来智慧旅游目的地发展和研究做出启示。
研究理论限制
本论文的局限性在于只包含了特定发表年限和期刊限制的文章。
关键词
智慧旅游目的地、旅游目的地吸引力、信息和通信技术、ICT、旅游研究、酒店业
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Yeping Peng, Ghasem Bahrami, Hossein Khodadadi, Alireza Karimi, Ahmad Soleimani, Arash Karimipour and Sara Rostami
The purpose of this study is simulation of of polymer electrolyte membrane fuel cell. Proton-exchange membrane fuel cells are promising power sources for use in power…
Abstract
Purpose
The purpose of this study is simulation of of polymer electrolyte membrane fuel cell. Proton-exchange membrane fuel cells are promising power sources for use in power plants and vehicles. These fuel cells provide a high level of energy efficiency at low temperature without any pollution. The convection inside the cell plays a key role in the electrochemical reactions and the performance of the cell. Accordingly, the transport processes in these cells have been investigated thoroughly in previous studies that also carried out functional modeling.
Design/methodology/approach
A multi-phase model was used to study the limitations of the reactions and their impact on the performance of the cell. The governing equations (conservation of mass, momentum and particle transport) were solved by computational fluid dynamics (CFD) (ANSYS fluent) using appropriate source terms. The two-phase flow in the fuel cell was simulated three-dimensionally under steady-state conditions. The flow of water inside the cell was also simulated at high-current density.
Findings
The simulation results suggested that the porosity of the gas diffusion layer (GDL) is one of the most important design parameters with a significant impact on the current density limitation and, consequently, on the cell performance.
Originality/value
This study was mainly focused on the two-phase analysis of the steady flow in the fuel cell and on investigating the impacts of a two-phase flow on the performance of the cell and also on the flow in the GDL, the membrane and the catalyst layer using the CFD.
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Jiyeon Jeon, Myongjee Yoo and Natasa Christodoulidou
The purpose of this study is to explore the impact of Wi-Fi service on the millennial generation’s loyalty to restaurants. Additionally, this study examines the impact of…
Abstract
Purpose
The purpose of this study is to explore the impact of Wi-Fi service on the millennial generation’s loyalty to restaurants. Additionally, this study examines the impact of Wi-Fi service on three different types of restaurants (coffee shops, fast-food restaurants and casual dining restaurants). Furthermore, this study examines the similarities and differences that exist cross-culturally between Americans and Koreans.
Design/methodology/approach
A total number of 480 questionnaires were collected to empirically test the study model. A factor analysis that used a principal components analysis with varimax rotation was performed to condense the loyalty items into a few underlying constructs, and the Cronbach’s alpha was checked to test for reliability. A multiple regression analysis and t-test were performed to test the study hypotheses.
Findings
The results show that Wi-Fi service has a significant impact on millennials’ loyalty behavior on all three types of restaurants in this study. However, the differences between Americans and Koreans on how they perceive the Wi-Fi services turned out to be significant only for coffee shops.
Research limitations/implications
The authors used a non-probability convenience sampling method for data collection. The findings cannot be generalized to other types of restaurants, such as fine dining and luxury restaurants. Although the results indicate a positive relation between Wi-Fi usage and a customer’s loyalty, loyalty is a multifaceted concept where a variety of factors, such as frequency or convenience can have an impact.
Practical implications
The findings should encourage marketers in the restaurant industry to use Wi-Fi as a value-added service for their customers.
Originality/value
There are limited studies on how significant Wi-Fi service is for the hospitality industry, and in particular, for restaurants. This study builds on the scholarship of Cobanoglu et al. (2012) on the value of the customer loyalty by providing new insights into customers’ views on Wi-Fi service in the restaurant industry.
论Wi-Fi服务对millennials饭店顾客的影响
摘要
研究目的 –本论文旨在探索Wi-Fi服务如何影响Millennial顾客的饭店忠诚度。此外, 本论文还研究了三种不同类型饭店的Wi-Fi服务(咖啡店、快餐店、以及休闲美食饭店Casual Dining)。本论文还比较美国人和韩国人在饮食跨文化上面的相似与差异。
研究设计/方法/途径
研究样本为480份实际消费问卷。本论文采用因子分析法中的主成分分析和最大方差旋转方式来缩减忠诚度量表题项。本论文采用Cronbach’s alpha来检测量表可靠性, 采用多元回归分析和t-test来验证研究假设。
研究结果
研究结果表明Wi-Fi服务对Millennial顾客忠诚行为在三种类型饭店中都具有显著影响。然而, 美国顾客和韩国顾客对Wi-Fi服务的差异只有在咖啡店方面有显著不同。
研究原创性/价值
酒店行业中关于Wi-Fi服务影响的文章少之又少。本论文建立在Cobanoglu et al. (2012)研究基础上, 进一步对顾客忠诚度价值进行分析, 为饭店业Wi-Fi服务的顾客见解方面研究做出突出贡献。
关键词
跨文化 顾客忠诚度 饭店业 Millennials Wi-Fi
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Emmanuel Senanu Mekpor, Anthony Aboagye and Jonathan Welbeck
This paper aims to compute a measure for anti-money laundering/counter-financing of terrorism (AML/CFT) compliance and investigate its determinants.
Abstract
Purpose
This paper aims to compute a measure for anti-money laundering/counter-financing of terrorism (AML/CFT) compliance and investigate its determinants.
Design/methodology/approach
Using the Financial Action Task Force (FATF) recommendations and assigning weights to them, the study computes a measure for AML compliance. Further, the determinants of AML compliance were investigated using ordinary least squares (OLS) data of 155 countries between 2004 and 2016.
Findings
The findings suggest that AML compliance have slightly improved over the years. Further, the OLS regression results show that technology, regulatory quality, bank concentration, trade openness and financial intelligence center significantly determined and improved AML compliance.
Practical implications
From the findings, it is evident that countries that wish to improve the AML compliance should focus more on technology, regulatory quality, structure of the banking sector, size of the economy and institution of financial intelligence center so as to enhance AML compliance.
Originality/value
To the best of the author’s knowledge, this paper reveals a first AML/CFT compliance index that measures the cross-country level of AML/CFT compliance from the year 2004 to 2016. Subsequently, this paper adopted an OLS econometric model to identify the key determinants of AML/CFT compliance among member states of FATF.
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Marina Romeo, Montserrat Yepes-Baldó, Miguel Ángel Piñeiro, Kristina Westerberg and Maria Nordin
The purpose of this paper is to analyze the moderation effect of over-commitment in the job crafting–well-being relationship, in the elderly care sector in Spain.
Abstract
Purpose
The purpose of this paper is to analyze the moderation effect of over-commitment in the job crafting–well-being relationship, in the elderly care sector in Spain.
Design/methodology/approach
A cross-sectional design was implemented and a final sample of 353 participants were assessed using the Job Crafting Questionnaire, an adaptation of the Over-commitment Scale from the Effort-Reward Imbalance Questionnaire, and the General Health Questionnaire (GHQ-12).
Findings
A positive interaction between relational and task crafting and over-commitment is observed in the prediction of well-being levels. Specifically, the effect of over-commitment in the task crafting–well-being relationship proved to be statistically significant when opposed to low, medium and high levels of over-commitment. Additionally, the effect of over-commitment in the relational crafting–well-being relationship proved to be statistically significant only when opposed to medium and high levels of over-commitment. Finally, a direct and simple effect was observed between cognitive crafting and well-being, not moderated by over-commitment.
Research limitations/implications
Implementation of non-behavioral measurements, and a non-longitudinal design are suggested. The development of behavioral measures for job crafting is encouraged, along with the implementation of longitudinal designs sensitive to changes in over-commitment. Possible over-commitment results are biased by an economically contracted environment.
Practical implications
Job crafting training, over-commitment early detection and further research on job crafting strategies’ preferences are suggested.
Originality/value
The moderating role of over-commitment in the job crafting–well-being relationship in the elderly care sector represents one of these attempts to better understand evidences of how work-related efforts modify a worker’s psychological functioning and adaptation, which is the reason why, specially in contexts of uncertainty, its study becomes relevant.
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Kai Wang, Stefan Felix van Hemmen and Josep Rialp Criado
The purpose of the study is to determine the impact that the crucial determinants have on the behavioural intention (BI) of undergraduates to adopt Massive Open Online…
Abstract
Purpose
The purpose of the study is to determine the impact that the crucial determinants have on the behavioural intention (BI) of undergraduates to adopt Massive Open Online Courses (MOOCs), addressing two perspectives that are students' technical experience and psychosocial factors.
Design/methodology/approach
This is a questionnaire study, and all the respondents are undergraduates in Barcelona, Spain. A total of 188 students are selected as survey subjects. Data collection applies the five-point Likert scale, and the collected information refers to demographic information and constructs related to the technology acceptance model (TAM) and theory of planned behaviour (TPB). Confirmatory factor analysis (CFA) and partial least square (PLS) are used to examine the measurement model's convergent and discriminant validity and test the hypotheses implementing the bootstrapping method.
Findings
The results show perceived usefulness (PU) and perceived ease of use (PEOU) are influential in forming an attitude (ATT), and PU could directly impact BI significantly. Additionally, the mediating role of ATT in the relationships amongst PU, PEOU and BI are investigated. Besides, perceived behavioural control (PBC) is found a critical variable and significantly impacts BI, whereas subjective norms (SN) is not found statistically significant in explaining BI in this study.
Originality/value
This study has confirmed that ATT has a positive mediation effect on PU, PEOU and BI. This study has also confirmed the validity and model fit of the incorporated model of TAM and TPB, which sufficiently accounts for the planned behavioural process of undergraduates to accept a MOOC and contributes to validating literature of the incorporated model of TAM and TPB. Besides, this study provides MOOCs managers with practical suggestions. First, ease-of-use interfaces should be designed and intensified. Second, more channels should be explored to satisfy students' needs. Third, managers should intensify the leverage of the systems and introduce the free trial period to new learners. Fourth, a bonus mechanism could be adopted to motivate students. Last, manager should intensify the construction of oral advertisements amongst students.
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Jessika Eichler and Sumit Sonkar
The CoViD-19 pandemic has brought about a panoply of institutional challenges both domestically and in the international arena. Classical constitutional theory thereby…
Abstract
Purpose
The CoViD-19 pandemic has brought about a panoply of institutional challenges both domestically and in the international arena. Classical constitutional theory thereby underwent a reinvention by the executive for the sake of speedy policy action and to the detriment of institutional control while favouring authoritarian forms of governance. This paper concerns itself with institutional responses to such developments, placing emphasis on the role of the judiciary and people*s in contesting emergency decrees and other executive orders, especially where fundamental rights are infringed upon. The paper aims to explore the difficulties arising with exerting absolute executive powers during the health crisis, the respective role assumed by constitutional courts and the impact of the new governance paradigm on forms of public contestation, also as a means of quasi institutional control.
Design/methodology/approach
Indeed, the right to health may be translated into political discourse and become foundational to security and public interest paradigms. This may result in a shrinking public space given the constraints to the freedom of movement. In the name of public safety, the (collective) right to assembly, expression and protest have been submitted to major limitations in that regard.
Findings
Ultimately, this re-opens debates on the meaning of absolute rights and contextualities of derogations, as well as the reconcilability of civil and political rights and economic, social and cultural rights. It also exposes social inequalities, social justice dimensions and vulnerabilities, often exacerbated by the health crisis; migrant rights demonstrably face particularly severe and intersectional forms of violations.
Originality/value
Particular values lie with the interdisciplinary approach embraced in this paper; the authors draw on a variety of social sciences disciplines to shed light on this very current issue. Both theoretical and empirical methods are used and combined here, making sense of the underlying logic of virus governance and its impacts on fundamental rights.
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