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1 – 10 of over 42000H. De Gersem, R. Belmans and K. Hameyer
To retain small models, electrostatic and electrokinetic finite element formulations are linked with several field‐circuit couplings and floating potential constraints. The…
Abstract
To retain small models, electrostatic and electrokinetic finite element formulations are linked with several field‐circuit couplings and floating potential constraints. The approaches enable convenient simulations of a condenser bushing and a dielectric heating device.
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Cheng Jiang, Ying Yang, Xuequn Cheng, Jinbin Zhao and Xiaogang Li
This study aims to study the effect of Sn on the corrosion behavior of weathering steel (WS) in a simulated tropical marine atmosphere.
Abstract
Purpose
This study aims to study the effect of Sn on the corrosion behavior of weathering steel (WS) in a simulated tropical marine atmosphere.
Design/methodology/approach
Indoor alternate immersion tests, electrochemical measurements and real-time current-monitoring technology based on the galvanic corrosion principle were used and the scanning electron microscope, X-ray diffraction, X-ray photoelectron spectroscopy and electron probe microanalyzer were used to analyze the morphology and component of the rust layer.
Findings
The results indicated that Sn has a positive influence on the corrosion process. Sn participated in the composition of the rust layer in the form of SnO2 and is enriched in the inner rust layer. SnO2 participated in the coprecipitation process with iron oxides and oxyhydroxides, which promoted further transformation of γ-FeOOH to α-FeOOH. As a result, the rust layer of Sn-containing steel was continuous, compact and effectively blocked the invasion of aggressive Cl−. Therefore, the additive of Sn enhanced the corrosion resistance of WS in a simulated tropical marine atmosphere.
Originality/value
The corrosion behaviors of WS were researched by the real-time current-monitoring technology which was rarely used.
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The purpose of this paper is to propose the organizational knowledge effects of organization routine breach response.
Abstract
Purpose
The purpose of this paper is to propose the organizational knowledge effects of organization routine breach response.
Design/methodology/approach
The paper reviews the routines and knowledge management literatures and applies them to the concept of organizational routine breach.
Findings
It is found that three types of organizational routine breach response affect the explicit and tacit knowledge contained within routines differently. These differences can influence organizational performance in positive and negative ways.
Research limitations/implications
Future research can be based on an enhanced understanding of the knowledge effects stemming from breaches in organizational routines.
Practical implications
Managers can use an enhanced understanding of the knowledge effects of organizational routine breach to increase their ability to manage organizational routines and the knowledge contained in them.
Originality/value
This paper links the organizational routines literature with the knowledge management literature to identify the effects of various responses to organization routine breach on organizational knowledge. This integration enables researchers and managers to better understand the implications of routine breach on organizational knowledge and performance.
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Western economics came into being with the rise of the capitalist market economy. It had a nature of duality beginning from its birth: the justificativeness of providing…
Abstract
Purpose
Western economics came into being with the rise of the capitalist market economy. It had a nature of duality beginning from its birth: the justificativeness of providing theoretical pillars for the capitalist market economy system and the scientificity of revealing the internal relations and operating rules of the capitalist market economy. The paper aims to discuss this issue.
Design/methodology/approach
However, after the 1830s, this justificativeness gradually evolved into vulgarity. Since the 1930s, modern western mainstream economics has mainly explored the general market economy on the assumption that the capitalist system remains unchanged, and many outcomes of such research are positive and beneficial.
Findings
Political economy of socialism with Chinese characteristics, at the present stage, is mainly a Chinese socialist market economics. It is guided by the Marxist political economy and rooted in the great practice of China’s reform and opening up and socialist modernization.
Originality/value
According to political complexion, western economic theories can be divided into political economic theory, mainstream economic theory and basic economic theory. By subjecting these theories to what we term “elimination,” “transformation” and “transplantation” surgeries, respectively, we can absorb and accommodate their beneficial elements in building a political economy of socialism with Chinese characteristics, which in turn is conducive to the development and prosperity of such an economy.
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Shahbaz Khan, Abid Haleem and Mohd Imran Khan
In a globalised environment, market volatility makes risk management an essential component of the supply chain. Similar to conventional supply chains, a Halal supply chain (HSC…
Abstract
Purpose
In a globalised environment, market volatility makes risk management an essential component of the supply chain. Similar to conventional supply chains, a Halal supply chain (HSC) is also affected by several factors making it vulnerable to risks. Therefore, the purpose of this study is to identify and analyse the elements of Halal supply chain management (HSCM) and their significant risk dimensions.
Design/methodology/approach
In total, 72 risk elements of HSCM are identified through a review of contemporary scientific literature along with news items and official websites related to risk management of conventional supply chain management, HSC and sustainable supply chain. Further, 42 risk elements are finalised using fuzzy Delphi and then these risk elements are categorised into 7 dimensions. The interrelationships among the risk dimensions as well as risk elements are developed using fuzzy DEMATEL.
Findings
Results suggest that production, planning, logistic & outsourcing and information technology-related risk are prominent risk dimensions. The causal relationships among the significant risk dimensions and elements related to the HSCM may help managers and policy planners.
Research limitations/implications
This study faces a challenge due to inadequate availability of the literature related to risk management in the area of HSCM. Further, this study has used inputs from experts, which can be biased.
Originality/value
To the best of the author's knowledge, it is the first comprehensive study towards investigating the interrelationships among the risks in the context of the HSCM.
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Krystal L. Brue and Shawn A. Brue
Women’s leadership training programs provide organizations opportunities to value women leaders as organizational resources. This qualitative research utilized phenomenological…
Abstract
Women’s leadership training programs provide organizations opportunities to value women leaders as organizational resources. This qualitative research utilized phenomenological methodology to examine lived experiences of seven alumni of a women’s-only leadership program. We conducted semi-structured interviews to clarify what learning elements were most beneficial in furthering an individuals’ leadership role. Emerging research themes included perceptional and personal agency changes within participants. Women’s leadership programs provided an opportunity for cognitive, affective, and behavioral growth; engaging learning activities, social capital development, and relational model methodologies were perceived as most helpful in leadership development. Action learning techniques, fostering interconnectedness, and philosophical leadership development activities were critical elements in leadership development. Insights gained from this study provided perspective on the unique experiences of women in a leadership training program.
Ervina Efzan Mhd Noor and Amares Singh
The aim of the present study was to gather and review all the important properties of the Sn–Ag–Cu (SAC) solder alloy. The SAC solder alloy has been proposed as the alternative…
Abstract
Purpose
The aim of the present study was to gather and review all the important properties of the Sn–Ag–Cu (SAC) solder alloy. The SAC solder alloy has been proposed as the alternative solder to overcome the environmental concern of lead (Pb) solder. Many researchers have studied the SAC solder alloy and found that the properties such as melting temperature, wettability, microstructure and interfacial, together with mechanical properties, are better for the SAC solder than the tin – lead (SnPb) solders. Meanwhile, addition of various elements and nanoparticles seems to produce enhancement on the prior bulk solder alloy as well. These benefits suggest that the SAC solder alloy could be the next alternative solder for the electronic packaging industry. Although many studies have been conducted for this particular solder alloy, a compilation of all these properties regarding the SAC solder alloy is still not available for a review to say.
Design/methodology/approach
Soldering is identified as the metallurgical joining method in electronic packaging industry which uses filler metal, or well known as the solder, with a melting point < 425°C (Yoon et al., 2009; Ervina and Marini, 2012). The SAC solder has been developed by many methods and even alloying it with some elements to enhance its properties (Law et al., 2006; Tsao et al., 2010; Wang et al., 2002; Gain et al., 2011). The development toward miniaturization, meanwhile, requires much smaller solder joints and fine-pitch interconnections for microelectronic packaging in electronic devices which demand better solder joint reliability of SAC solder Although many studies have been done based on the SAC solder, a review based on the important characteristics and the fundamental factor involving the SAC solder is still not sufficient. Henceforth, this paper resolves in stating all its important properties based on the SAC solder including its alloying of elements and nanoparticles addition for further understanding.
Findings
Various Pb-free solders have been studied and investigated to overcome the health and environmental concern of the SnPb solder. In terms of the melting temperature, the SAC solder seems to possess a high melting temperature of 227°C than the Pb solder SnPb. Here, the melting temperature of this solder falls within the range of the average reflow temperature in the electronic packaging industry and would not really affect the process of connection. A good amendment here is, this melting temperature can actually be reduced by adding some element such as titanium and zinc. The addition of these elements tends to decrease the melting temperature of the SAC solder alloy to about 3°C. Adding nanoparticles, meanwhile, tend to increase the melting temperature slightly; nonetheless, this increment was not seemed to damage other devices due to the very slight increment and no drastic changes in the solidification temperature. Henceforth, this paper reviews all the properties of the Pb-free SAC solder system by how it is developed from overcoming environmental problem to achieving and sustaining as the viable candidate in the electronic packaging industry. The Pb-free SAC solder can be the alternative to all drawbacks that the traditional SnPb solder possesses and also an upcoming new invention for the future needs. Although many studies have been done in this particular solder, not much information is gathered in a review to give better understanding for SAC solder alloy. In that, this paper reviews and gathers the importance of this SAC solder in the electronic packaging industry and provides information for better knowledge.
Originality/value
This paper resolves in stating of all its important properties based on the SAC solder including its alloying of elements and nanoparticles addition for further understanding.
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Savvas Vassiliadis, Argyro Kallivretaki, Paraskevas Frantzeskakis and Christopher Provatidis
The purpose of this paper is to focus on the development of a thorough method for the macromechanical analysis of fabrics.
Abstract
Purpose
The purpose of this paper is to focus on the development of a thorough method for the macromechanical analysis of fabrics.
Design/methodology/approach
The homogenization method was implemented for the generation of continuum equivalent model for the plain woven structure. Keystone of the method is the mesomechanical analysis of the textile unit cell for the evaluation of the apparent properties and the generation of an equivalent macromechanical model supporting the mechanical performance of the structure. The finite element method (FEM) using beam elements was applied for the mechanical analysis of the discrete model of the unit cell and the FEM using shell elements was applied for the analysis of the continuum macromechanical model.
Findings
The tensile, shear and bending test of the unit cell were simulated. The constitutive equations of the continuum model were formed considering equivalent performance with the discrete model.
Originality/value
The reliability of the equivalent model in tensile, shear (in‐plane) and bending (out‐of‐plane) deformation was achieved even for asymmetric woven structures. The low computational power demanded for the meso‐ and macro‐mechanical modelling and analysis is a beneficial feature of the proposed method.
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The purpose of this paper is to describe a support course for English-medium instruction (EMI) which continues to expand in European higher education (HE). While the phenomenon of…
Abstract
Purpose
The purpose of this paper is to describe a support course for English-medium instruction (EMI) which continues to expand in European higher education (HE). While the phenomenon of teaching through English is not novel, support for university teachers appears to remain limited despite recognised challenges of EMI such as language proficiency and pedagogical considerations.
Design/methodology/approach
In the course non-native university lecturers in Finland were provided a course to practice various elements of English for academic purposes and receive feedback on their teaching. A pre-course needs analysis was used to determine the main causes for EMI concerns with non-native lecturers, and which elements of English they wished to develop during the course. The course itself consisted of six joint meetings, followed by individual teaching demonstrations, and concluded with a post-course analysis.
Findings
Findings suggest that Finnish university lecturers were pre-course most concerned about the accuracy, fluency and pronunciation of their academic English. Based on the post-course analysis, the most beneficial elements of the EMI support course were the reflective discussions about EMI, the language practice and receiving individual feedback.
Practical implications
The study suggests that support courses for university lecturers involved with EMI should not cover only language but allow lecturers to share their concerns and experiences and to practice in authentic teaching situations in English.
Originality/value
This study describes a pedagogically effective method to assist and encourage lecturers in HE to the use of English in their instruction.
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Cheng Zhang, Cheng Peng, Jin Huang, Yanchun Zhao, Tingzhuang Han, Guangang Wang, Liang Wu and Guangsheng Huang
This study aims to investigate the effect of microalloyed Ca and Ce on microstructure and corrosion behavior of Mg-1.5Zn alloy. Mg-1.5Zn-xCa-xCe alloys were prepared by melting…
Abstract
Purpose
This study aims to investigate the effect of microalloyed Ca and Ce on microstructure and corrosion behavior of Mg-1.5Zn alloy. Mg-1.5Zn-xCa-xCe alloys were prepared by melting, extrusion and rolling processes.
Design/methodology/approach
The effects of adding Ca and Ce elements alone or adding Ca and Ce elements simultaneously on the microstructure and corrosion resistance of Mg-1.5Zn-xCa-xCe (x = 0 or 0.2 Wt.%) alloys were studied by scanning electron microscopy, hydrogen evolution tests and electrochemical experiments.
Findings
The addition of Ca and Ce elements alone or the addition of Ca and Ce elements had little impact on the grain size of the rolled and annealed Mg-1.5Zn-xCa-xCe alloy, but had a greater effect on the type and quantity of the second phase.
Originality/value
The order of the corrosion rates for the three alloys was Mg-1.5Zn-0.2Ca < Mg-1.5Zn-0.2Ca-0.2Ce < Mg-1.5Zn-0.2Ce. Mg-1.5Zn-0.2Ca showed the best corrosion resistance, which was related to the second phase and corrosion products.
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