Search results
1 – 10 of 876Chenggang Li, Weishan Song and Yong Song
Six-axis force sensors play an important role in civilian and military fields because of their multifunctionality. In the context of sensor structure design, sensitivity and…
Abstract
Purpose
Six-axis force sensors play an important role in civilian and military fields because of their multifunctionality. In the context of sensor structure design, sensitivity and sensitivity isotropy are often considered. This paper aims to study the possible relationship between the sensitivity/sensitivity isotropy and structural parameters of an 8/4–4 parallel six-axis force sensor. A comprehensive evaluation index and structural optimization design scheme are suggested in the end.
Design/methodology/approach
Based on the conditional number of the Jacobian matrix spectral norm, the sensitivity and sensitivity isotropy of the sensor are derived. Orthogonal experiments are used to determine the degree of primary and secondary factors that have a substantial effect on the sensor characteristics. The relationship between the performance indices and the structural parameters is analyzed by the performance atlas method. The comprehensive evaluation index lays the foundation for the structural optimization design of an 8/4–4 parallel six-axis force sensor.
Findings
The variation in each performance index of the sensor for each of the structural parameters is analyzed, and the structural parameters of the sensor with the desired performance indices can be easily selected from the performance atlases. A comprehensive performance evaluation index with a target value of 1 is proposed, and the overall influence of the structural parameters on the sensor performance index is investigated. A simulation example shows the feasibility of the proposed evaluation index.
Originality/value
The importance of each structural parameter of the 8/4–4 parallel six-axis force sensor is determined through orthogonal experiments in this paper. Relations among the structural parameters meeting the performance indices are derived and shown in the performance atlases. A comprehensive evaluation index is proposed to analyze the overall sensor performance.
Details
Keywords
Bijuan Yan, Huijun Liang, Minjie Jin, Zhanlong Li and Yong Song
In the vibration reduction field, constrained stand-off layer damping cylindrical shell plays an important role. However, due to the lack of accurate analysis of its damping…
Abstract
Purpose
In the vibration reduction field, constrained stand-off layer damping cylindrical shell plays an important role. However, due to the lack of accurate analysis of its damping characteristics, this hinders its further research and application. Therefore, the purpose of this paper is concerned with an accurate solution for the vibration-damping characteristics of a constrained stand-off-layer damping cylindrical shell (CSDCS) under various classical boundary conditions and conducts a further analysis.
Design/methodology/approach
Based on the Rayleigh–Ritz method and the Hamilton principle, a dynamic model of CSDCS is established. Then the loss factor and the frequency of CSDCS are obtained. The correctness and convergence behavior of the present model are verified by comparing the calculation results with the literature. By using for various classical boundary conditions without any special modifications in the solution procedure, the characteristics of CSDCS with S-S, C-C, C-S, C-F and S-F boundaries are discussed.
Findings
The Rayleigh–Ritz method is effective in handling the problem of CSDCS with different boundaries and an accurate solution is obtained. The boundary conditions have an important influence on the vibration and damping behavior of the CSDCS.
Originality/value
Based on the Rayleigh–Ritz method and Hamilton principle, a dynamic model of CSDCS is established for the first time, and then the loss factor and frequency of CSDCS are obtained. In addition, the effectiveness of adding the stand-off layer between the base shell and the viscoelastic layer is confirmed by discussing the characteristics of CSDCS with S-S, C-C, C-S, C-F and S-F boundaries.
Details
Keywords
Qin Su, Zhao Li, Yong‐tao Song and Ting Chen
The purpose of this paper is to explore the structure of the concept of customer‐perceived quality (CPQ) in electronic commerce (e‐commerce).
Abstract
Purpose
The purpose of this paper is to explore the structure of the concept of customer‐perceived quality (CPQ) in electronic commerce (e‐commerce).
Design/methodology/approach
The study applies the methodology of concept mapping to data obtained from online and offline focus groups. Following a series of structured conceptualization tasks, the data were analyzed using multidimensional scaling and hierarchical cluster analysis to establish a conceptual construct of e‐commerce CPQ.
Findings
The proposed conceptual construct consists of six dimensions: outcome quality; consumer service; process controllability; ease of use; information quality; and web site design. The study finds that online consumers attach more importance to quality attributes associated with outcome quality and consumer service than to attributes associated with web transactions.
Research limitations/implications
The sample should be extended to facilitate the generalization of the findings from this research.
Originality/value
This paper identifies a three‐level structure for e‐commerce quality as perceived by consumers. The study offers practical insights to online retailers in providing superior service.
Details
Keywords
C. Carl Pegels and Yong Il Song
This paper is a study of competitive and cooperative interactions among members of a competitive industry group. There are few strategic, tactical or market moves that do not…
Abstract
This paper is a study of competitive and cooperative interactions among members of a competitive industry group. There are few strategic, tactical or market moves that do not affect competition in any industry. Competitive and cooperative interactions among competitive firms are studied to determine how the reactions of competitors to an initiator of an action cause convergent or divergent patterns. It is hypothesized that the patterns, or cycles, of competitive and cooperative interactions are a function of complexity of the interaction cycle, degree of offensiveness of participants’ moves, action reversibility, previous interaction experience, interaction cycle visibility and response time. An empirical test of the hypothesis revealed that the two most strongly supported hypotheses were: interaction cycle complexity increases the likelihood of interaction cycle convergence, and interaction cycle visibility increases the likelihood of interaction cycle divergence.
Details
Keywords
Yong Guo and Songfeng Li
The purpose of this paper is to analyze several measures which the government of the People’s Republic of China (PRC) has adopted to curb corruption and to make recommendations to…
Abstract
Purpose
The purpose of this paper is to analyze several measures which the government of the People’s Republic of China (PRC) has adopted to curb corruption and to make recommendations to curb the spread of corruption.
Design/methodology/approach
The study is based on the analysis of government policy documents and reports, and statistical data on anti-corruption measures in China.
Findings
During the past ten years, the government of the PRC has adopted these anti-corruption measures: first, increasing the ability to handle cases for deterring corrupt officials; second, improving the work style of officials and prohibiting them from enjoying special privileges, and promoting moral behavior among them; third, reforming the economic and political system to reduce corruption opportunities; and fourth, reforming the Central Commission for Discipline Inspection (CCDI) to more effectively handle corruption cases. Nevertheless, in despite of these anti-corruption measures, there remain serious challenges for reducing corruption stemming from an irrational system of administrative reform and balancing the relationship between the CCDI and the judiciary departments to enhance the professionalism and efficiency of the anti-corruption agencies, which continue to constrain China’s current anti-corruption efforts. Therefore, the Chinese government should take a top-down approach, analyze the characteristics and trends of corruption in the new era, strengthen the institutional structures, and strive to suppress the spread of corruption.
Originality/value
This paper will be useful for those scholars, policy-makers and anti-corruption practitioners who are interested in China’s anti-corruption measures.
Details
Keywords
This paper aims to provide a short scholarly review on the development of tourism education that contributes to the celebration of 75 years of the Tourism Review.
Abstract
Purpose
This paper aims to provide a short scholarly review on the development of tourism education that contributes to the celebration of 75 years of the Tourism Review.
Design/methodology/approach
The paper is based on selective literature on the topic.
Findings
Tourism education has developed into a major field of study in the period since the Second World War, but after a long period of growth, it now faces some important challenges.
Research limitations/implications
The paper is based on selective literature.
Practical implications
The review provides a brief overview of the development and challenges for tourism education.
Social implications
The review provides a brief overview of the development and challenges for tourism education.
Originality/value
The paper provides a brief overview of developments.
Details
Keywords
This chapter presents an empirical effort for the theoretical applicability of sport diplomacy to sport for development (SFD) research by examining how sport played a role in…
Abstract
This chapter presents an empirical effort for the theoretical applicability of sport diplomacy to sport for development (SFD) research by examining how sport played a role in pursuing South Korea's development at given four historical stages: (1) A prelude to Korean SFD before 1945, (2) sport for a new Korea between 1945 and 1960, (3) sport for developmental state between 1961 and 1979, and (4) sport for coming-out parties of the 1980s. This chapter supports current scholarly attempts to situate the 21st century sport for development (SFD) within the history of sport for social good, as well as approaches integrating the role of sport in the 19th century colonization and/or in the modern version of development during the post-war era. By adding an Asian case (South Korea), this chapter contributes to existing SFD literature mostly focusing on Western countries and their former colonies in Africa and South/Central America. It also contributes to the understanding of soft power's dualistic characteristics that direct domestic and international audiences with a new insight into the sport-development nexus in the history of South Korea.
Details
Keywords
Li DING, Tieling XING and Guoqiang CHEN
Five different structural reactive dyes (Reactive Brilliant Blue K-3R, Everacion Blue H-ERD, Moderzol Blue FBR, Atuzol Black B and Moderzol Blue HEGN) were treated with laccase…
Abstract
Five different structural reactive dyes (Reactive Brilliant Blue K-3R, Everacion Blue H-ERD, Moderzol Blue FBR, Atuzol Black B and Moderzol Blue HEGN) were treated with laccase (Denilite II US) in order to determine the optimum decolouration conditions. The experiments showed that laccase had distinct decolouration effects on these five dyes. Under optimum conditions, the colour removal rates of Everacion Blue H-ERD and Moderzol Blue HEGN were over 90%. Furthermore, the effects of different additives, such as acid ion, metal ion, and surfactants on the decolouration rate of Reactive Brilliant Blue K-3R were discussed. The results show that the decolouration rate is significantly promoted through the addition of Cu2+ and Al3+, while it is inactivated with Fe2+ and ion surfactants. Moreover, the COD removal rates of the five dyes are more than 75%.
Details
Keywords
Paul Hong, Seung-Chul Kim, Ayeon Lee and Haeun Kang
This paper explores the entrepreneurial transformation of Bangtan Sonyeondan or Bangtan Boys (BTS), tracing their journey from initiation through expansion. Despite the global…
Abstract
Purpose
This paper explores the entrepreneurial transformation of Bangtan Sonyeondan or Bangtan Boys (BTS), tracing their journey from initiation through expansion. Despite the global prominence of their music, dance and outreach, many aspects of BTS’s meteoric rise remain underexplored. This study aims to illuminate the strategic and organizational developments that have propelled their unprecedented growth in the global media landscape.
Design/methodology/approach
Using case study research methods, this paper uses a multimodal approach to examine BTS’s intricate interactions with market dynamics and fan engagement comprehensively. Using entrepreneurial innovation as the overarching theoretical framework, the authors categorize BTS’s transformational processes into drivers, practices and outcomes, thereby elucidating the strategies used to navigate key challenges and pivotal moments in their worldwide ascent.
Findings
The BTS organization exhibits a distinct entrepreneurial orientation and transformation process across its phases of initiation, development, growth and expansion. The authors identify specific drivers, practices and outcomes along with strategic vision, actionable practices and measurable performance outcomes at each stage.
Research limitations/implications
While this study draws valuable parallels between BTS’s trajectory and established growth models, it recognizes the limitations inherent in a single-case study approach. The findings highlight the critical role of entrepreneurial leadership in the entertainment industry and suggest further exploration into the universal applicability of these models across different genres and cultural contexts within the music industry.
Practical implications
This paper underscores the importance of entrepreneurial innovation within entertainment organizations. The conceptual framework provided can assist managers in formulating strategies and policies for the growth and transformation of similar entities.
Social implications
BTS’s case demonstrates how engaging a global audience with culturally specific content and the universal appeal of youthful energy can be transformative. This engagement is facilitated through effective use of music, dance and dynamic interactions on social media.
Originality/value
By analyzing BTS from an entrepreneurial leadership perspective, this study offers unique insights by examining their internal motivations and managerial practices, as well as the external outcomes, spanning from 2010 to 2023.
Details
Keywords
Gour Gobinda Goswami, Md. Rubaiyath Sarwar and Md. Mahbubur Rahman
The main objective of this paper is to examine the impact of COVID-19 on the tourism flows of eight Asia-Pacific Countries: Australia, Hong Kong, Malaysia, New Zealand, the…
Abstract
Purpose
The main objective of this paper is to examine the impact of COVID-19 on the tourism flows of eight Asia-Pacific Countries: Australia, Hong Kong, Malaysia, New Zealand, the Philippines, Singapore, Taiwan and Thailand.
Design/methodology/approach
Using monthly data from 2019M1 to 2021M10 and 48 origin and eight destination countries in a panel Poisson pseudo-maximum likelihood (PPML) estimation technique and gravity equation framework, this paper finds that after controlling for gravity determinants, COVID-19 periods have a 0.689% lower tourism inflow than in non-COVID-19 periods. The total observations in this paper are 12,138.
Findings
A 1% increase in COVID-19 transmission in the origin country leads to a 0.037% decline in tourism flow in the destination country, while the reduction is just 0.011% from the destination. On the mortality side, the corresponding decline in tourism flows from origin countries is 0.030%, whereas it is 0.038% from destination countries. A 1% increase in vaccine intensity in the destination country leads to a 0.10% improvement in tourism flows, whereas vaccinations at the source have no statistically significant effect. The results are also robust at a 1% level in a pooled OLS and random-effects specification for the same model.
Research limitations/implications
The findings provide insights into managing tourism flows concerning transmission, death and vaccination coverage in destination and origin countries.
Practical implications
The COVID-19-induced tourism decline may also be considered another channel through which the global recession has been aggravated. If we convert this decline in terms of loss of GDP, the global figure will be huge, and airline industries will have to cut down many service products for a long time to recover from the COVID-19-induced tourism decline.
Social implications
It is to be realized by the policymaker and politicians that infectious diseases have no national boundary, and the problem is not local or national. That’s why it is to be faced globally with cooperation from all the countries.
Originality/value
This is the first paper to address tourism disruption due to COVID-19 in eight Asia-Pacific countries using a gravity model framework.
Highlights
Asia-Pacific countries are traditionally globalized through tourism channels
This pattern was severely affected by COVID-19 transmission and mortality and improved through vaccination
The gravity model can be used to quantify the loss in the tourism sector due to COVID-19 shocks
Transmission and mortality should be controlled both at the origin and the destination countries
Vaccinations in destination countries significantly raise tourism flows
Asia-Pacific countries are traditionally globalized through tourism channels
This pattern was severely affected by COVID-19 transmission and mortality and improved through vaccination
The gravity model can be used to quantify the loss in the tourism sector due to COVID-19 shocks
Transmission and mortality should be controlled both at the origin and the destination countries
Vaccinations in destination countries significantly raise tourism flows
Details