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Article
Publication date: 19 August 2021

Sheng Peng, Lu-jun Cai, Tian-hua Jiang and Xu Kai

The purpose of this paper is to investigate the explosive performance and explosion damage mechanism of T-beam bridge structure.

Abstract

Purpose

The purpose of this paper is to investigate the explosive performance and explosion damage mechanism of T-beam bridge structure.

Design/methodology/approach

On the basis of the existing specification, two T-beam bridge models were designed and fabricated. Test specimens of different explosive dosage and different blast height were carried out. The mechanical process, failure mode, blast damage model, damage identification mechanism and blast evolution law and quantitative evaluation were taken into account.

Findings

The results revealed that the web plate fracture failure is the key to the unstable failure of the whole T-beam bridge. The explosion failure phenomenon and blast damage evaluation criterion of RC T-beam bridge was divided into five stages: the original cracks stage of concrete material (D = 0 ∼ 0.1), the fractures initiation stage of concrete material (D = 0.1 ∼ 0.3), the stable expansion stage of cracks in concrete material (D = 0.3 ∼ 0.55), the unstable expansion stage of cracks in concrete material (D = 0.55 ∼ 0.8), the explosion fracture of steel bars and the overall instability and damage of the bridge (D = 0.8 ∼ 1.0), which can also be described as basically intact, slight damage, moderate damage, severe damage and collapsed.

Social implications

The research result will provide basis for the antiknock evaluation and damage repair technical specifications of the RC T-beam bridge.

Originality/value

The research results of damage evaluation serve as a basis for damage repair and reinforcement of bridge structures after explosion.

Details

Sensor Review, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0260-2288

Keywords

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Article
Publication date: 11 September 2019

Duen-Ren Liu, Yu-Shan Liao and Jun-Yi Lu

Providing online news recommendations to users has become an important trend for online media platforms, enabling them to attract more users. The purpose of this paper is…

Abstract

Purpose

Providing online news recommendations to users has become an important trend for online media platforms, enabling them to attract more users. The purpose of this paper is to propose an online news recommendation system for recommending news articles to users when browsing news on online media platforms.

Design/methodology/approach

A Collaborative Semantic Topic Modeling (CSTM) method and an ensemble model (EM) are proposed to predict user preferences based on the combination of matrix factorization with articles’ semantic latent topics derived from word embedding and latent topic modeling. The proposed EM further integrates an online interest adjustment (OIA) mechanism to adjust users’ online recommendation lists based on their current news browsing.

Findings

This study evaluated the proposed approach using offline experiments, as well as an online evaluation on an existing online media platform. The evaluation shows that the proposed method can improve the recommendation quality and achieve better performance than other recommendation methods can. The online evaluation also shows that integrating the proposed method with OIA can improve the click-through rate for online news recommendation.

Originality/value

The novel CSTM and EM combined with OIA are proposed for news recommendation. The proposed novel recommendation system can improve the click-through rate of online news recommendations, thus increasing online media platforms’ commercial value.

Details

Industrial Management & Data Systems, vol. 119 no. 8
Type: Research Article
ISSN: 0263-5577

Keywords

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Article
Publication date: 4 April 2008

Jun Lu, Lichun Bao and Tatsuya Suda

Sensing coverage is a critical issue in sensor network deployments. The paper aims to propose a novel scheme to maintain the sensing coverage in sensor networks, which is…

Abstract

Purpose

Sensing coverage is a critical issue in sensor network deployments. The paper aims to propose a novel scheme to maintain the sensing coverage in sensor networks, which is termed coverage‐aware self‐scheduling (CASS).

Design/methodology/approach

The paper describes a generic unifying framework to incorporate different connectivity and coverage maintenance schemes. Simulations are carried out under the framework by integrating CASS with an existing connectivity maintenance scheme ‐ the low‐energy adaptive clustering hierarchy.

Findings

Different from the existing work on coverage maintenance, CASS probabilistically schedules sensing activities according to the sensor's contribution to the sensing coverage of the whole sensor network. CASS reduces the number of active sensors to maintain certain coverage. Besides the sensing coverage, the connectivity of the network topologies is required for the purpose of communicating among sensors to collect sensing data. Simulation results show that CASS can considerably improve the energy efficiency of sensing coverage with low communication and computation overhead.

Originality/value

The paper shows that CASS is designed to allow sensors with higher coverage contribution to have more chance to sense.

Details

International Journal of Pervasive Computing and Communications, vol. 4 no. 1
Type: Research Article
ISSN: 1742-7371

Keywords

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Article
Publication date: 2 October 2007

Lanying Du, Jundong Hou and Jun

To study and validate the relationship between the development of Chinese non‐state‐owned enterprise (Chinese non‐SOE), and cultivation of scientific and technological…

Abstract

Purpose

To study and validate the relationship between the development of Chinese non‐state‐owned enterprise (Chinese non‐SOE), and cultivation of scientific and technological competence empirically.

Design/methodology/approach

Correlation analysis in SPSS is used to analyze the correlation between Chinese non‐SOE and cultivation of scientific and technological competence based on the statistic data released by China Statistical Bureau from 1987 to 2005. Furthermore, their relationship is validated by means of Granger causality test in Eviews 3.0.

Findings

This paper finds serial GDP of Chinese non‐SOE is a first difference stationary, while serial total funds of S&T activities of Chinese non‐SOE is a second difference stationary. After they are adjusted to be difference stationary, we find that there is not only a positive correlation, but also a bilateral Granger causality between the two variables.

Practical implications

From the point of view of a practitioner engaging in China trade, this study suggested that when all level governmental departments and all Chinese non‐SOE establish economic development strategies and policies for cultivating scientific and technological competence, the interaction relationship must be taken into consideration in order to avoid negative impact on the sustainable development of Chinese non‐SOE.

Originality/value

This study provides reference and benchmark to Chinese non‐SOE's development and will help to enhance its international competence.

Details

Journal of Technology Management in China, vol. 2 no. 3
Type: Research Article
ISSN: 1746-8779

Keywords

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Article
Publication date: 7 September 2010

Hung‐Yi Lu, Hsin‐Ya Hou, Tzong‐Horng Dzwo, Yi‐Chen Wu, James E. Andrews, Shao‐Ting Weng, Mei‐Chun Lin and Jun‐Ying Lu

The melamine milk scandal caused a crisis of confidence in food containing dairy products. The purpose of this paper is to explore the determinants of precautionary…

Abstract

Purpose

The melamine milk scandal caused a crisis of confidence in food containing dairy products. The purpose of this paper is to explore the determinants of precautionary behaviour to avoid food containing dairy products among Taiwanese college students.

Design/methodology/approach

Of the total respondents selected using a multistage cluster sampling plan, 1,213 respondents completed the questionnaire.

Findings

The survey results showed that subjective norms, attitude, perceived behavioural control, attention to news, and perceived credibility of information are significantly associated with the intention to take precautionary behaviour.

Originality/value

The paper developed a modified theory of planned behaviour (TPB) that focused on attention and perceived credibility of milk scandal‐related information as additional determinants of precautionary behaviour to avoid food containing dairy products. The inclusion of attention and perceived credibility of information constructs enabled a better model fit than that of the TPB model.

Details

British Food Journal, vol. 112 no. 9
Type: Research Article
ISSN: 0007-070X

Keywords

Content available
Article
Publication date: 1 June 2001

Abstract

Details

Industrial Lubrication and Tribology, vol. 53 no. 3
Type: Research Article
ISSN: 0036-8792

Keywords

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Case study
Publication date: 24 September 2020

Muralee Das and Susan Myrden

This case is focused on the allegations of corrupt practices within the strategic leadership at the board level of an international sports organization – the Asian…

Abstract

Theoretical basis

This case is focused on the allegations of corrupt practices within the strategic leadership at the board level of an international sports organization – the Asian Football Confederation (AFC). The theoretical premise is that the practices and decisions of the AFC’s leadership will have a profound impact on the AFC’s performance. However, because the AFC is the continental governing body, the impact is theorized to be far larger, across an entire industry. In writing the case, the authors were guided by upper Echelons theory (UET) (Hambrick and Mason, 1984; Hambrick, 2007; Hambrick et al., 2015), which argues that an organization’s strategic direction is directly influenced by its leader’s values. The authors selected UET for the theoretical framework, as it considered a spectrum of factors from industry, leader characters (values), their choices and the results of their actions. Such a comprehensive theory aligned with the complexities of the AFC and its leadership. In constructing the case roadmap using UET, the authors first adopted an ethnographic methodology. This was motivated by the fact that one of the authors had been embedded for many years as part of the leadership team at the AFC. His career work notes based on direct interactions and observations of these leaders helped in two ways: to identify the complex set of personal characteristics of these leaders (i.e. background, their careers outside football and financial standing) as they originated from 47 different nationalities. UET refers to these as observable factors to better theorize the hidden intentions of their alleged corrupt behaviors. UET identifies this second set of non-observable factors as psychological factors. These two different sets of observations combined helped to theorize their drivers, intentions and strategic decisions (options). For the second methodology, the authors accessed archival, publicly available media news and reports to understand the consequences of their actions to the AFC and the Asian football industry. This completed the final parts of the UET framework (Yamak et al., 2014).

Research methodology

This case relied on information that was widely reported within international media, press announcements by various organizations, published decisions by tribunals and publicly available information on the AFC. All of the names and positions in this case are actual persons.

Case overview/synopsis

This case focuses on the role and influence of the AFC as the Asian football governing body. The AFC is a member of the world football governing body – FIFA. With a US$1bn budget, the AFC has a strong impact on the future of football among Asia’s three billion people. Unfortunately, the AFC has been unable to create the value in its sports events or properties that attracts fans and investors. Central to this problem is the issue of corruption and corruption allegations within the AFC, especially with regard to its leadership. This case, therefore, attempts to highlight the various issues, discusses the circumstances around these challenges and brings forth the complexities of leading a truly international organization across 47 countries. Such factors are then tied to the value of the organization’s products or services in the marketplace.

Complexity academic level

The case is written and designed for a graduate level (MBA) class or an upper level undergraduate class such as corporate strategy, leadership, international management, international marketing, contemporary issues in management, cross-cultural management, sports management and sports marketing. In general, the case will also be a good fit for courses that discuss leadership, organizational strategy, organizational structure, organizational ethics and organizational behavior.

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Article
Publication date: 1 June 1999

George K. Chacko

Gives an in depth view of the strategies pursued by the world’s leading chief executive officers in an attempt to provide guidance to new chief executives of today…

Abstract

Gives an in depth view of the strategies pursued by the world’s leading chief executive officers in an attempt to provide guidance to new chief executives of today. Considers the marketing strategies employed, together with the organizational structures used and looks at the universal concepts that can be applied to any product. Uses anecdotal evidence to formulate a number of theories which can be used to compare your company with the best in the world. Presents initial survival strategies and then looks at ways companies can broaden their boundaries through manipulation and choice. Covers a huge variety of case studies and examples together with a substantial question and answer section.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 11 no. 2/3
Type: Research Article
ISSN: 1355-5855

Keywords

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Article
Publication date: 1 June 2005

Li‐teh Sun

Man has been seeking an ideal existence for a very long time. In this existence, justice, love, and peace are no longer words, but actual experiences. How ever, with the…

Abstract

Man has been seeking an ideal existence for a very long time. In this existence, justice, love, and peace are no longer words, but actual experiences. How ever, with the American preemptive invasion and occupation of Afghanistan and Iraq and the subsequent prisoner abuse, such an existence seems to be farther and farther away from reality. The purpose of this work is to stop this dangerous trend by promoting justice, love, and peace through a change of the paradigm that is inconsistent with justice, love, and peace. The strong paradigm that created the strong nation like the U.S. and the strong man like George W. Bush have been the culprit, rather than the contributor, of the above three universal ideals. Thus, rather than justice, love, and peace, the strong paradigm resulted in in justice, hatred, and violence. In order to remove these three and related evils, what the world needs in the beginning of the third millenium is the weak paradigm. Through the acceptance of the latter paradigm, the golden mean or middle paradigm can be formulated, which is a synergy of the weak and the strong paradigm. In order to understand properly the meaning of these paradigms, however, some digression appears necessary.

Details

International Journal of Sociology and Social Policy, vol. 25 no. 6/7
Type: Research Article
ISSN: 0144-333X

Keywords

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Article
Publication date: 7 November 2016

Yunfei Liu, Jun Lv and Xiaowei Gao

The purpose of this paper is to introduce a new method called simultaneous elimination and back-substitution method (SEBSM) to solve a system of linear equations as a new…

Abstract

Purpose

The purpose of this paper is to introduce a new method called simultaneous elimination and back-substitution method (SEBSM) to solve a system of linear equations as a new finite element method (FEM) solver.

Design/methodology/approach

In this paper, a new technique assembling the global stiffness matrix will be proposed and meanwhile the direct method SEBSM will be applied to solve the equations formed in FEM.

Findings

The SEBSM solver for FEM with the present assembling technique has distinct advantages in both computational time and memory space occupation over the conventional methods, such as the Gauss elimination and LU decomposition methods.

Originality/value

The developed solver requires less memory space no matter the coefficient matrix is a typical sparse matrix or not, and it is applicable to both symmetric and unsymmetrical linear systems of equations. The processes of assembling matrix and dealing with constraints are straightforward, so it is convenient for coding. Compared to the previous solvers, the proposed solver has favorable universality and good performances.

Details

Engineering Computations, vol. 33 no. 8
Type: Research Article
ISSN: 0264-4401

Keywords

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