Feng Yin, Yaonan Wang and Shuning Wei
This paper aims to develop a new real‐time effective method for solving the inverse kinematics (IK) problem, especially for those manipulators with high‐dimensional nonlinear…
Abstract
Purpose
This paper aims to develop a new real‐time effective method for solving the inverse kinematics (IK) problem, especially for those manipulators with high‐dimensional nonlinear kinematic equations.
Design/methodology/approach
The paper transforms the IKs problem into a minimization problem. Then, a novel meta‐heuristic algorithm, called the electromagnetism‐like method (EM), is used to solve this equivalent problem. Moreover, in order to further improve the computational efficiency and accuracy of EM, a hybrid method which combines EM with the Davidon‐Fletcher‐Powell (DFP) method is proposed.
Findings
The results showed that EM is a powerful yet easy algorithm for solving the IKs problem of robot manipulators. Its complexity is independent on the characteristics of the kinematic equations involving dimensionality and the degree of nonlinearity. Moreover, EM can be used as an accompanying algorithm for DFP method to get better precision at a lower iteration number.
Originality/value
The method developed in this paper is a generalized approach that is efficient enough to obtain IK solutions independent of robot geometry and the number of degrees of freedom.
Details
Keywords
Wangyue Zhou, Zayyad Tsiga, Boying Li, Shuning Zheng and Shuli Jiang
The purpose of this paper is to identify antecedents of e-finance continuance intention with Alibaba’s Yu’E Bao as an example.
Abstract
Purpose
The purpose of this paper is to identify antecedents of e-finance continuance intention with Alibaba’s Yu’E Bao as an example.
Design/methodology/approach
An online questionnaire was used to collect the data (n=293), and partial least squares structural equation modeling was employed for data analysis. Four e-finance features (perceived reputation, website quality, e-finance familiarity and situational normality) are introduced with trust acting as a moderator between the users’ satisfaction and continuance intention to use an e-finance platform.
Findings
The results find that website quality, familiarity and situational normality can influence perceived ease of use (PEOU) and perceived usefulness (PU). PEOU and PU, together with reputation, are positively associated with confirmation which further leads to satisfaction. The positive effects that satisfaction and trust have on e-finance continuance intention are confirmed, and trust is found to be a significant moderator on the relationship between satisfaction and continuance intention.
Practical implications
The findings can be used to guide e-finance providers to improve their platform design and services to retain users.
Originality/value
This study combines the theory of trust, Technology Acceptance Model and Expectations Confirmation Theory to investigate the factors that influence the continuance intention in the context of e-finance in China.
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Osamah M. Al-Qershi, Junbum Kwon, Shuning Zhao and Zhaokun Li
For the case of many content features, This paper aims to investigate which content features in video and text ads more contribute to accurately predicting the success of…
Abstract
Purpose
For the case of many content features, This paper aims to investigate which content features in video and text ads more contribute to accurately predicting the success of crowdfunding by comparing prediction models.
Design/methodology/approach
With 1,368 features extracted from 15,195 Kickstarter campaigns in the USA, the authors compare base models such as logistic regression (LR) with tree-based homogeneous ensembles such as eXtreme gradient boosting (XGBoost) and heterogeneous ensembles such as XGBoost + LR.
Findings
XGBoost shows higher prediction accuracy than LR (82% vs 69%), in contrast to the findings of a previous relevant study. Regarding important content features, humans (e.g. founders) are more important than visual objects (e.g. products). In both spoken and written language, words related to experience (e.g. eat) or perception (e.g. hear) are more important than cognitive (e.g. causation) words. In addition, a focus on the future is more important than a present or past time orientation. Speech aids (see and compare) to complement visual content are also effective and positive tone matters in speech.
Research limitations/implications
This research makes theoretical contributions by finding more important visuals (human) and language features (experience, perception and future time). Also, in a multimodal context, complementary cues (e.g. speech aids) across different modalities help. Furthermore, the noncontent parts of speech such as positive “tone” or pace of speech are important.
Practical implications
Founders are encouraged to assess and revise the content of their video or text ads as well as their basic campaign features (e.g. goal, duration and reward) before they launch their campaigns. Next, overly complex ensembles may suffer from overfitting problems. In practice, model validation using unseen data is recommended.
Originality/value
Rather than reducing the number of content feature dimensions (Kaminski and Hopp, 2020), by enabling advanced prediction models to accommodate many contents features, prediction accuracy rises substantially.
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The purpose of this paper is to investigate how government affairs micro-blog (also referred to as GAM) are applied to the disclosure of government emergency information in China…
Abstract
Purpose
The purpose of this paper is to investigate how government affairs micro-blog (also referred to as GAM) are applied to the disclosure of government emergency information in China, to identify its existing problems and to provide solutions.
Design/methodology/approach
In this paper, online research, case analysis and other methods were used to analyze the application status of China’s Government micro-blog in emergency information disclosure in recent years. Based on the relevant data and cases, a systematic theoretical research is conducted according to the established research framework.
Findings
There are some problems in the application of GAM to crisis management, such as insufficient information dissemination, incomplete information disclosure, fragmentation of information and lack of dynamic updating and communication. So, it is necessary to strengthen the organization and management of GAM, establish a perfect emergency management mechanism of GAM, increase the positive influence of GAM on public opinions and establish an evaluation accountability system of administrative micro-blog management.
Originality/value
The analysis of the application of GAM to the disclosure of government emergency information and the proposed strategies for improving its performance are all original, and they are both meaningful to more effective usage of GAM and facilitation of government emergency information disclosure.
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Adriana Leiras, Irineu de Brito Jr, Eduardo Queiroz Peres, Tábata Rejane Bertazzo and Hugo Tsugunobu Yoshida Yoshizaki
– The purpose of this paper is to present a literature review of humanitarian logistics (HL) that aims to identify trends and suggest some directions for future research.
Abstract
Purpose
The purpose of this paper is to present a literature review of humanitarian logistics (HL) that aims to identify trends and suggest some directions for future research.
Design/methodology/approach
This conceptual paper develops a research framework for literature review through qualitative and quantitative content analysis. First, previous literature reviews in HL are updated and detailed. Then, seven classification criteria are added to earlier ones in order to advance the literature analysis.
Findings
The conclusions identify some literature gaps and research opportunities. The main conclusions are the need for more studies into the disaster recovery phase and the need for closer relationships between academia and humanitarian organizations to increase the number of applied research.
Research limitations/implications
The literature is limited to academic peer-reviewed journals because of their academic relevance, accessibility, and ease of searching.
Practical implications
Help potential researchers to set up a research agenda for future work.
Social implications
Reinforce earlier calls to increase truly applied research and improve social impact of the field.
Originality/value
In total, 228 papers that were published in the HL area are reviewed, giving rise to the most extensive literature review in this area. New dimensions for literature review in HL are proposed, which give some new insights into potential research directions.
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Malini Natarajarathinam, Ismail Capar and Arunachalam Narayanan
The purpose of this paper is to review the literature to describe the current practices and research trends in managing supply chains in crisis. This paper also provides…
Abstract
Purpose
The purpose of this paper is to review the literature to describe the current practices and research trends in managing supply chains in crisis. This paper also provides directions for future research in supply chain crisis management.
Design/methodology/approach
Articles published prior to August 2008 are analyzed and classified.
Findings
A unique five‐dimensional framework to classify the literature is provided. The study reveals that there has been extensive research done in this area in recent years. Much of the research is focused on proactive approaches to crisis in supply chains. Management during various internal crises such as supplier bankruptcy or loss of key clients is a new, challenging area that requires further investigation.
Research limitations/implications
This paper does not include articles that are not peer‐reviewed.
Practical implications
This paper will serve as a guide to supply chain managers who would like to know how crises, disasters, and disruptions in supply chains have been handled in existing academic literature.
Originality/value
To the best of the authors' knowledge, this is the first literature review in the area of managing supply chains during crisis that looks at both SCM and operations research/management science journals. This paper identifies the various methods that have been used to handle crisis situations and provides a framework to classify the literature. Additionally, this paper identifies gaps in the literature that can provide ideas for future research in this area.