Comprehensive study of skid-steer wheeled mobile robots: development and challenges

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Rameez Khan ◽  
Fahad Mumtaz Malik ◽  
Abid Raza ◽  
Naveed Mazhar
Keyword(s):  
Mobile Robots ◽  
Design Methodology ◽  
Recent Literature ◽  
Research Gaps ◽  
Wheeled Mobile Robots ◽  
Content Type ◽  
Wheeled Robots ◽  
Recent Developments ◽  
Skid Steering ◽  
Comprehensive Study

Purpose The purpose of this paper is to provide a comprehensive and unified presentation of recent developments in skid-steer wheeled mobile robots (SSWMR) with regard to its control, guidance and navigation for the researchers who wish to study in this field. Design/methodology/approach Most of the contemporary unmanned ground robot’s locomotion is based upon the wheels. For wheeled mobile robots (WMRs), one of the prominent and widely used driving schemes is skid steering. Because of mechanical simplicity and high maneuverability particularly in outdoor applications, SSWMR has an advantage over its counterparts. Different prospects of SSWMR have been discussed including its design, application, locomotion, control, navigation and guidance. The challenges pertaining to SSWMR have been pointed out in detail, which will seek the attention of the readers, who are interested to explore this area. Findings Relying on the recent literature on SSWMR, research gaps are identified that should be analyzed for the development of autonomous skid-steer wheeled robots. Originality/value An attempt to present a comprehensive review of recent advancements in the field of WMRs and providing references to the most intriguing studies.

Interlending and document supply: a review of the recent literature: 85

2014 ◽  
Vol 42 (1) ◽  
pp. 33-38
Author(s):  
Mike McGrath
Keyword(s):  
Open Access ◽  
Resource Sharing ◽  
Design Methodology ◽  
Recent Literature ◽  
Review Of The Literature ◽  
Content Type ◽  
Related Material ◽  
Recent Developments ◽  
The Impact

Purpose – The purpose of this paper is to provide a review of the literature concerning interlending and document supply. Design/methodology/approach – A review based on the reading of over 150 journals and related material including reports, conferences and blogs. Findings – This review has concerned itself primarily with the recent developments in open access and the impact that these will have on document supply. However some articles of importance in document supply as such have been noted. Originality/value – This paper represents a useful resource for librarians and others concerned with interlending and document supply as well as such related matters as resource sharing and open access.

Document supply and resource sharing in Portuguese libraries: the role of the National Library

2010 ◽  
Vol 38 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Elisa Maria Gaudêncio Soares
Keyword(s):  
Information Technology ◽  
Resource Sharing ◽  
Design Methodology ◽  
Public Library ◽  
Supply System ◽  
National Library ◽  
Content Type ◽  
Long Period ◽  
Recent Developments

PurposeThe purpose of the paper is to describe the development of the Portuguese document supply system with particular emphasis on the role of the National Library but also in its academic and public library sectors.Design/methodology/approachThe paper is descriptive in nature.FindingsPortugal emerged from a long period of monarchy and dictatorship, profited from being a EU member, and libraries are now exploiting the advantages of information technology particularly for the benefit of remote users.Originality/valueThis is probably the first overview of historical and recent developments in document supply in Portugal.

Visual servoing of dynamic wheeled mobile robots with anti-interference finite-time controllers

2018 ◽  
Vol 38 (5) ◽  
pp. 558-567 ◽  
Author(s):  
Hua Chen ◽  
Lei Chen ◽  
Qian Zhang ◽  
Fei Tong
Keyword(s):  
Mobile Robots ◽  
Finite Time ◽  
Visual Servoing ◽  
Control Method ◽  
External Disturbance ◽  
Nonholonomic Systems ◽  
Stability Control ◽  
Interference Control ◽  
Wheeled Mobile Robots ◽  
Content Type

Purpose The finite-time visual servoing control problem is considered for dynamic wheeled mobile robots (WMRs) with unknown control direction and external disturbance. Design/methodology/approach By using finite-time control method and switching design technique. Findings First, the visual servoing kinematic WMR model is developed, which can be converted to the dynamic chained-form systems by using a state and input feedback transformation. Then, for two decoupled subsystems of the chained-form systems, according to the finite-time stability control theory, a discontinuous three-step switching control strategy is proposed in the presence of uncertain control coefficients and external disturbance. Originality/value A class of discontinuous anti-interference control method has been presented for the dynamic nonholonomic systems.

A recipe for sustainable development: assessing transition of commercial foodservices towards the goal of the triple bottom line sustainability

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Hien Thu Bui ◽  
Viachaslau Filimonau
Keyword(s):  
Design Methodology ◽  
Critical Evaluation ◽  
Triple Bottom Line ◽  
Well Being ◽  
Research Gaps ◽  
Bottom Line ◽  
Content Type ◽  
Sustainability Performance ◽  
Academic Publications ◽  
Inductive Thematic Analysis

Purpose This study aims to critically evaluate the factual triple bottom line (TBL) sustainability performance of commercial foodservices as featured in peer-reviewed academic publications. Design/methodology/approach The commercial foodservices’ sustainability performance-related articles were collected for a systematic review. An inductive thematic analysis was applied to the eligible articles. Findings The contribution of the commercial foodservice sector to the TBL sustainability is highlighted through eight themes: food waste management; food safety and hygiene; food allergy management; provision of healthy meals; local food use; employment of the disadvantaged; well-being of (non)managerial personnel; and noise level management. Originality/value The critical evaluation of the actual TBL sustainability measures adopted by commercial foodservice providers highlights the feasibility of the measures, thus calling for their broader industry uptake. Research gaps and issues for future investigations are accentuated for scholars to support the industry in its progress towards the goals of the TBL sustainability.

scholarly journals Forecasting tomorrow’s tourist

2016 ◽  
Vol 8 (6) ◽  
pp. 643-653 ◽  
Author(s):  
Sérgio Moro ◽  
Paulo Rita
Keyword(s):  
Literature Review ◽  
Design Methodology ◽  
Scientific Literature ◽  
Recent Literature ◽  
Demand Forecasting ◽  
Tourism Demand ◽  
Content Type ◽  
Current Trends ◽  
Modeling Techniques ◽  
Excellent Source

Purpose This study aims to present a very recent literature review on tourism demand forecasting based on 50 relevant articles published between 2013 and June 2016. Design/methodology/approach For searching the literature, the 50 most relevant articles according to Google Scholar ranking were selected and collected. Then, each of the articles were scrutinized according to three main dimensions: the method or technique used for analyzing data; the location of the study; and the covered timeframe. Findings The most widely used modeling technique continues to be time series, confirming a trend identified prior to 2011. Nevertheless, artificial intelligence techniques, and most notably neural networks, are clearly becoming more used in recent years for tourism forecasting. This is a relevant subject for journals related to other social sciences, such as Economics, and also tourism data constitute an excellent source for developing novel modeling techniques. Originality/value The present literature review offers recent insights on tourism forecasting scientific literature, providing evidences on current trends and revealing interesting research gaps.

Consumer confusion: a systematic review and research directions

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Vishakha Chauhan ◽  
Mahim Sagar
Keyword(s):  
Conceptual Framework ◽  
Design Methodology ◽  
Important Research ◽  
Research Gaps ◽  
Future Directions ◽  
Research Directions ◽  
Content Type ◽  
Marketing Literature ◽  
Consumer Confusion ◽  
Research Questions

Purpose The purpose of this paper is to systematically review and analyse extant marketing literature on consumer confusion to propose an integrated conceptual framework and highlight important research gaps. Design/methodology/approach Systematic literature review methodology was followed for article selection. Selected articles were subjected to content analysis to derive thematic as well as descriptive results. Findings Antecedents, consequences, moderators, mediators and application of the construct in the different contexts have been reported. An integrated framework along with research questions and future directions has also been proposed. Originality/value To the best of the authors’ knowledge, this study is notably the first attempt to systematically review the marketing literature on consumer confusion. The conceptual framework and proposed research questions create a research agenda around the problem of consumer confusion and contribute towards the advancement of extant literature.

Reinforcing each other: strategies to advance international interlibrary loan

2021 ◽  
Vol 49 (1) ◽  
pp. 36-44
Author(s):  
Hilary H. Thompson ◽  
Kurt Munson ◽  
James B. Harper
Keyword(s):  
Resource Sharing ◽  
Design Methodology ◽  
Recent Literature ◽  
International Federation ◽  
Interlibrary Loan ◽  
Content Type ◽  
Survey Results ◽  
Multiple Translations ◽  
Practical Implications ◽  
Stars Survey

Purpose The purpose of this paper is to share the results of the 2019 international interlending survey conducted by the American Library Association, Reference and User Services Association (RUSA), Sharing and Transforming Access to Resources Section (STARS) International Interlibrary Loan (ILL) Committee, the fourth such survey conducted by this group since 2007. Design/methodology/approach Committee members developed the survey instrument and collected data in Qualtrics. Questions from the 2015 and 2011 instruments were reused to support longitudinal data analysis, and new questions related to improving the sharing of resources across borders were added. The survey was distributed to libraries worldwide via multiple methods, and translations in six of the seven official International Federation of Library Associations and Institutions languages were provided. Findings Results reveal challenges to engaging in global resource sharing in the areas of discovery and request methods, policies and service models, copyright and licensing, delivery and payment. Strategies to overcome these challenges, as informed by both the survey results and recent literature, are shared. Reinforcing each other, these independently and organically developed solutions illustrate ways to further advance ILL. Practical implications The findings can aid ILL practitioners and the organizations to which they belong in improving the sharing of resources across borders. By optimizing this service, libraries can better support researchers in a globalized environment. Originality/value The 2019 RUSA STARS survey is the first survey on the topic of international ILL to offer multiple translations complimenting global distribution. It contributes to the literature by offering a broad and updated perspective on current international ILL practices, challenges impeding the sharing of library materials abroad and possible solutions.

What is your desire? Retail investor preferences in structured products

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Rainer Baule ◽  
Patrick Muenchhalfen
Keyword(s):  
Design Methodology ◽  
Recent Literature ◽  
Product Structure ◽  
Content Type ◽  
Financial Products ◽  
Retail Investors ◽  
Retail Investor ◽  
Retail Products ◽  
Structured Financial Products ◽  
Insight Into

PurposeThe authors evaluate the preferences of retail investors with regard to the investment in structured financial products. The purpose of the paper is an analysis of the relative importance of key product attributes namely the issuing bank, the product structure, the associated costs and the disclosed risk.Design/methodology/approachThe authors conduct a choice-based conjoint analysis, based on an online experiment. Participants judge their preferences for products which are presented by shortened key information documents according to the requirements of EU regulation.FindingsInvestors consider the costs and the product structure to be most important, whereas the issuer and information on risk are of less interest. Their preferences depend on their (self-evaluated) expertise: while inexperienced retail investors concentrate on costs, experienced investors pay more attention to the product structure.Research limitations/implicationsThe study is limited to a subsegment of the market, the discount certificates. For these products, issuing banks gain insight into the attractiveness of their products. Furthermore, the study carries implications for regulators: since investors emphasize the costs in their decisions, an unbiased disclosure of costs should be enforced.Originality/valueWhile the recent literature has studied preferences for the investment in mutual funds, this is the first paper which directly analyzes the drivers of an investment in structured retail products.

Customer process-centric artefacts: a literature review

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Elisabeth Zsoka Palvölgyi ◽  
Jürgen Moormann
Keyword(s):  
Literature Review ◽  
Design Methodology ◽  
Business Processes ◽  
Contextual Factors ◽  
Research Gaps ◽  
Content Type ◽  
Research Fields ◽  
Management Literature ◽  
Research Frameworks ◽  
Descriptive Knowledge

PurposeCompanies that strive to provide customers with value in their processes benefit from artefacts that allow them to better understand customer processes (CPs) and to influence CPs in ways that are valuable for customers. Such CP-centric artefacts (CPCAs) carry various labels across research fields, which inhibit their application or utilization for developing further artefacts. This study provides a structured overview of existing CPCAs and investigates which research foundations promote their development.Design/methodology/approachTwenty-five CP-related keyword combinations are applied in several iterations using multiple (meta) search engines to identify papers on CPCAs across different research streams. Introduced research frameworks organize the identified artefacts and indicate research gaps and reasons why some approaches are more successful in developing CPCAs than others.FindingsExisting CPCAs cover different aspects of CPs and utilize contextual factors of CPs to varying degrees to analyse or influence CPs. Research gaps are identified that indicate opportunities to develop further CPCAs. Taking instantiated methods in combination with CP-related descriptive knowledge as a foundation yields the highest potential for generating beneficial CPCAs.Originality/valueThis paper contributes to CP management literature by offering a foundation for the generation of CPCAs suitable for analysing and influencing CPs of end-consumers. This supports the establishment of a CP management aiming at optimizing both, interlinked business processes and CPs.

A guide on empirical tests of the EMH

2019 ◽  
Vol 18 (2) ◽  
pp. 268-295
Author(s):  
David Peón ◽  
Manel Antelo ◽  
Anxo Calvo
Keyword(s):  
Financial Markets ◽  
Design Methodology ◽  
Recent Literature ◽  
Asset Price ◽  
Efficient Market Hypothesis ◽  
Price Formation ◽  
Content Type ◽  
Economic Fundamentals ◽  
Empirical Tests ◽  
Available Information

Purpose The efficient market hypothesis (EMH) states that asset prices in financial markets always reflect all available information about economic fundamentals. The purpose of this paper is to provide a guide as to which predictions of the EMH seem to be borne out by empirical evidence. Design/methodology/approach Rather than following the classic three groups of tests for the different forms of EMH that are common in the literature, the authors consider how the two alternative definitions of the EMH and the joint hypothesis problem impact on the tests and leave the controversy unsolved. The authors briefly report the antecedents, the main theoretical and empirical contributions and recent literature on each type of tests. Findings Eventually, as a summary for each type of tests, the authors provide a critical view on the main sources of acrimony between the alternative schools of thought in understanding asset price formation. Originality/value The paper may be seen as an up-to-date introductory review for researchers on the different tests of the EMH performed, and for newcomers to understand the key sources of acrimony between rationalists and behaviorists.

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