Mehdi Keikhosravy, Reza Hashemi Oskouei, Payam Soltani, Akin Atas and Constantinos Soutis
The purpose of this paper is to investigate the effect of geometric variables on the stress and strain distributions, as well as non‐linear deformation behaviour of aluminium…
Abstract
Purpose
The purpose of this paper is to investigate the effect of geometric variables on the stress and strain distributions, as well as non‐linear deformation behaviour of aluminium alloy 2024‐T3 single‐lap bolted joints loaded in tension.
Design/methodology/approach
The study has been conducted by using numerical and experimental approaches. In the numerical part, 3D FE models were generated using ANSYS software for different e/d and W/d ratios in which e and W are variables but the hole diameter (d) is constant. Stress and displacement results for each case have been discussed to better explain the mode of failure. In the experimental part, e/d=3 and W/d=6 ratios were selected as constant and testing specimens were produced accordingly. The aim was to obtain baseline experimental load‐strain and load‐displacement values for selected specimen geometry coordinated with the numerical analyses.
Findings
The good agreement between the experimental and numerical analysis provided confidence in the numerical methodology used to evaluate the different geometric variables. The results showed that the single‐lap bolted plates with optimised W/d and e/d ratios could shift the failure mode from net‐tension and shear‐out to bearing failure by directing the maximum damaging stresses from the stress concentration region and shear‐out planes towards the bearing region, leading to higher failure loads.
Originality/value
The paper develops a FE model of single‐lap bolted joints with a non‐linear material model and investigates 3D stress analysis as well as non‐linear deformation behaviour of bolted plates; optimisation of plates' width (W) and edge distance (e) to control failure modes; and bigger W/d and e/d ratios shift net‐tension and shear‐out to bearing failure mode.
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Ali Mohammad Soltani, Seyed Habibollah Tabatabaeian, Payam Hanafizadeh and Jahanyar Bamdadsoofi
The purpose of this paper is to suggest indicators for evaluating Iran national nanotechnology plan at the policy and program levels. Governments are required to evaluate their…
Abstract
Purpose
The purpose of this paper is to suggest indicators for evaluating Iran national nanotechnology plan at the policy and program levels. Governments are required to evaluate their policies to be accountable to their audience and to improve their policies. The evaluation of nanotechnology policies both in academic and governmental institutions has been mainly confined to measuring the research and development outputs, while explicit models are required for evaluating national nanotechnology policies and programs. In other words, although policies are translated into several activities, it does not mean that the evaluation of activities results in holistic policy evaluation.
Design/methodology/approach
The present research uses a qualitative method to explore the process of developing a model for assessing nanotechnology policymaking in Iran. Expert opinions have been collected and analyzed by using local and international surveys to validate different elements of the model.
Findings
The model includes the evaluation time-frame, criteria and indicators for policy and program levels. Assessment at program and policy levels, as distinct from activity evaluation, measures the ultimate objectives of a policy intervention, based on which the outcome and impact indicators should be developed. This paper argues that the Iran national nanotechnology policy should be evaluated and revised triennially based on the model in which 46 outcome and impact indicators are included under three general criteria of appropriateness, efficiency and effectiveness. A number of these indicators should be evaluated annually or biannually.
Originality/value
The evaluation of nanotechnology plans has been mainly limited to assessing the research and development outputs that are related to the activity level. The main value of this work is developing outcome and impact indicators that are related to policy and program levels.
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Babak Esmaeilpour Ghouchani, Susan Jodaki, Maryam Joudaki, Alireza Balali and Lila Rajabion
Nowadays, the Internet of Things (IoT) offers new intelligent services and business model opportunities by extending the internet connectivity into physical devices and daily…
Abstract
Purpose
Nowadays, the Internet of Things (IoT) offers new intelligent services and business model opportunities by extending the internet connectivity into physical devices and daily objects. Recently, this technology has had a deep impact on all the aspects of human societies from industry to management and business. Therefore, the purpose of this paper is to predict the impact of using IoT services on the development of electronic business (e-business).
Design/methodology/approach
For evaluating the model’s elements, a questionnaire was designed. It was revised by experts with significant experiences. For statistical analysis, SmartPLS 3.2 is used.
Findings
The findings have confirmed the validity of the proposed model. The results also have indicated that the quality of IoT services (scalability, availability, reliability and ease of use), security of IoT services (trust, reputation, privacy and encryption) and IT knowledge of users (usage skills, awareness, experience and accuracy) have a positive and significant impact on development of e-business. Furthermore, the obtained results have revealed that the operating cost of IoT services (transmission time, storage capacity, functionality and stability) is significantly influenced by the development of e-business.
Research limitations/implications
By capturing a number of important factors in the proposed model, this study can provide a significant theoretical influence for researchers in the related area of interest. In fact, this study provides a worthwhile direction by assessing e-business performance, which, so far, has not been well assessed in many developing countries.
Practical implications
From a practical perspective, the statistical results support the crucial role of the following factors: quality of IoT services, the security of IoT services, operating cost of IoT services and IT knowledge of users. Hence, aspects relating to these factors must be the focus of attention of any organization in their endeavor to development of e-business.
Originality/value
This study meaningfully contributes to the knowledge and literature by focusing more on development e-business and IoT as original technology for further understanding, investigating other important features and applying advanced statistical analyses technique. By doing so, this study was able to develop the current understanding regarding the main aspects of development e-business and IoT services.
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Amirreza Farahbod and Uğur Dağli
From an architectonic point of view, the identity of Iranian houses has become more enriched itself throughout history. Primarily, during the Qajardynasty (1785-1925)as a…
Abstract
From an architectonic point of view, the identity of Iranian houses has become more enriched itself throughout history. Primarily, during the Qajardynasty (1785-1925)as a consequence of the social, political, and economical changes which took place, there was a turning point from traditional architectural construction to the modernism principals of construction. In this regard, this studyaims toexplore the importance of the compatibility of the termidentity of architecture in the transformation age (a period which led tothe turning point in the history of Iranian architecture) bydescriptive (including comparative and co-relational methods) and explanative-analytical methods.
By evaluating the spatial characteristics of TraditionalIranian Houses (TIH), the study has developed a method of assessingthe architectural identity of the Qajar era. It alsointroduceda Top-down and Bottom-up processing method as the two main factors in shapingthe identityofan architectural style. By comparing both the objective and subjective indicators of shapingthe identity of TIH, the study also revealed that, in transitioning from the traditional construction to modern, the physical characteristics of the houses might change considerably, whilst lifestyles will not change at the same speed.
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Samira Delbari, Saeed Rajaipour and Yasamin Abedini
The present study aimed to investigate the relationship between career development and productivity of the university staff with the mediating role of self-regulation.
Abstract
Purpose
The present study aimed to investigate the relationship between career development and productivity of the university staff with the mediating role of self-regulation.
Design/methodology/approach
The research approach is quantitative-relational and is based on structural equation modeling (SEM). The population consisted of the staff of two Iranian universities in 2018 out of which 331 participants were selected using Cochran's formula and a proportionate stratified random sampling method. To gather data, the self-regulation questionnaire (SRQ), the career development questionnaire (CDQ) and a researcher-made employees' productivity questionnaire (EPQ) were used. In terms of reliability, Cronbach's alpha coefficient of the instruments was found to be 0.97, 0.84 and 0.88, respectively. Face and content validity were confirmed by a group of field experts.
Findings
The findings indicated that the staff’s self-regulation had a positive and significant effect on individual, organizational and environmental productivity factors. In addition, self-regulation had the ability to predict those factors. It was found that self-regulation had a mediating role in the relationship between career development and staff productivity. According to the results, educational institutions, especially universities, can provide their staff with the opportunity to exploit their full potentials through reinforcing their self-regulation and increasing their productivity.
Research limitations/implications
Higher self-regulation capacity among university staff helps them liberate their potential energy for disinterested selfless service to the society. Higher self-regulation capacities allow individuals to increase the energy resource for self-regulation and contribute to the productivity and quality of life. The statistical population of the quantitative section is confined only to the staff working at Iranian universities. Therefore, our results should be cautiously generalized to universities in other countries.
Practical implications
Our findings can help in empowering human resources and consequently improving education and research processes.
Social implications
Universities play a decisive role in the economic growth and development of countries because of their diverse services in the production and distribution of science and knowledge.
Originality/value
This study was conducted on university’s staff productivity, while most previous researches have been conducted in industrial enterprises. Thus, the present study seeks to fill this research gap by means of providing new perspectives and information on the factors affecting staff productivity and the relationship between research variables in higher education institutions.
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Timothy Shea, Syed Aktharsha Usman, Sengottuvel Arivalagan and Satyanarayana Parayitam
The purpose of this study is to empirically examine knowledge management (KM) practices as a moderator in the relationship between organizational culture and performance. The…
Abstract
Purpose
The purpose of this study is to empirically examine knowledge management (KM) practices as a moderator in the relationship between organizational culture and performance. The effect of four types of organizational culture on organizational performance was studied. In addition to direct effects, most importantly, KM practices as a moderator in strengthening the culture-performance relationship were empirically examined.
Design/methodology/approach
A carefully crafted survey instrument was distributed and data was collected from 1,255 respondents from 10 information technology companies in India. After checking the psychometric properties of the instrument, this paper performs hierarchical regression to test hypotheses.
Findings
The results reveal that: cooperative culture, innovative culture, consistent culture and effectiveness culture were all positively and significantly related to organizational performance; KM practices were positively and significantly related to organizational performance, KM practices moderate the relationship between various dimensions of organizational culture and organizational performance.
Research limitations/implications
As with any survey-based research, the present study suffers from the problems associated with self-report measures. These are common method bias and social desirability bias. However, this study attempts to minimize these limitations by following appropriate statistical techniques.
Practical implications
This study contributes to both practicing managers and the literature on KM and organizational culture. The study suggests that managers use KM practices, which are all-pervasive and very important for improving organizational performance. The results highlight the importance of implementing KM practices in organizations.
Originality/value
This study provides new insights into the importance of KM practices in achieving sustained competitive advantage by achieving organizational effectiveness. To the knowledge, the importance of KM practices is underemphasized in organizational culture research.