Jian Le, Hua Zhang and Jin-wen Li
This study aims to improve the welding quality and efficiency, and an algorithm should be designed to realize tracking space-curved fillet weld joints.
Abstract
Purpose
This study aims to improve the welding quality and efficiency, and an algorithm should be designed to realize tracking space-curved fillet weld joints.
Design/methodology/approach
Fillet weld joints tracking based on the two wheels and the horizontal slider coordinated movement has been studied. The method of pattern recognition is used to identify the height deviation, and the analysis of the accuracy corresponding to recognizing height deviations has been researched. The proportional control algorithm is used to control the vertical and horizontal sliders movement, so fillet weld joints tracking in the height direction has been achieved. Based on wheels and vertical and horizontal sliders coordinated movement, the algorithm of space-curved fillet weld joints tracking has been researched.
Findings
Some experiments have been done, and experimental results show that the welding robot can track space-curved fillet weld joints with high accuracy and good reliability.
Research limitations/implications
The welding robot can improve the welding quality and efficiency.
Practical implications
The welding robot can track fillet weld joints in ship panels, and it was shown that the welding robot could track space-curved fillet weld joints with high accuracy and good reliability.
Social implications
The welding robot has many industrial and social applications.
Originality/value
There are various forms of fillet weld joints in the industry, and the fillet weld is curved in the space. Experimental results show that the welding robot can track space-curved fillet weld joints with good stability and high precision.
Details
Keywords
Suggests that misunderstandings frequently occur when trying to understand Chinese language and culture, and so gives the implied meaning of various Chinese expressions and…
Abstract
Suggests that misunderstandings frequently occur when trying to understand Chinese language and culture, and so gives the implied meaning of various Chinese expressions and sayings such as greetings, thanks, respect, age, congratulations and taboo subjects.
Details
Keywords
Asha Thomas, Puja Khatri, Vidushi Dabas and Ilda Maria Coniglio
Competition in the modern, knowledge-based economy is utterly pendant on innovation, rendering it indispensable in virtually every organisation. Knowledge workers, therefore, must…
Abstract
Purpose
Competition in the modern, knowledge-based economy is utterly pendant on innovation, rendering it indispensable in virtually every organisation. Knowledge workers, therefore, must remain vigilant, spanning novel ways to innovate. Given the relevance of innovation orientation (IO) in knowledge work, it is imperative to possess an extensive understanding of the concept. Therefore, this study aims to develop and validate a measurement scale to gauge employees’ IO.
Design/methodology/approach
Considering that the instruments now in existence exhibit insufficiency for measuring knowledge workers’ IO in its entirety, the mixed-method approach used in this study draws on both qualitative and quantitative findings across various studies, to address this problem. This study has been organised into five stages: item generation, scale purification, scale refinement, nomological validation and generalizability.
Findings
This study establishes and verifies a second-order, reflective–reflective IO measure founded on multiple samples, encompassing the dimensions of creative orientation, learning orientation, first-mover orientation, trust orientation and agility orientation. The resultant IO scale serves as a robust and reliable tool that is capable of being leveraged to explain, assess and enhance IO for knowledge workers.
Research limitations/implications
The rigorous methodology used in this scale development procedure serves as a benchmark for prospective scale development methodologists. From a managerial stance, this study serves managers/leaders concerning how to foster an innovation-oriented work environment to uncover employees’ hidden innovators. Organisations can leverage this study to discover, cultivate and capitalise on knowledge workers’ IO.
Originality/value
Although there exists an abundance of research on IO viewed from an institutional standpoint, research centred on the IO of knowledge workers is scarce. To bridge this gap, this study has developed and validated a scale for measuring knowledge workers’ IO.
Details
Keywords
Although an important facet of modernist architecture in which function plays a prominent role, building flexibility is not entirely a new concept. Its relevance transcends…
Abstract
Although an important facet of modernist architecture in which function plays a prominent role, building flexibility is not entirely a new concept. Its relevance transcends generations, allowing space and structure to evolve through time. This paper investigates the relationship among main building structures, infill elements, and space by studying examples in ancient Chinese architecture. It reveals the role of building owners, users, and craftsmen from a survey of historical documentation. In studying these examples, it is concluded that craftsmen in ancient China were involved not only during the construction phase but throughout the period of use as well. Thus, in select cases, the relationship between craftsmen and owners or users had been preserved for generations. Finally, this paper suggests potential strategies for the building industry and technology in the move towards sustainable development.
Details
Keywords
Jian Liu, Mengyao Xu, Wenxiong Xi, Jiawen Song, Shibin Luo and Bengt Ake Sunden
Endwall film cooling protects vane endwall by coolant coverage, especially at the leading edge (LE) region and vane-pressure side (PS) junction region. Strong flow impingement and…
Abstract
Purpose
Endwall film cooling protects vane endwall by coolant coverage, especially at the leading edge (LE) region and vane-pressure side (PS) junction region. Strong flow impingement and complex vortexaa structures on the vane endwall cause difficulties for coolant flows to cover properly. This work aims at a full-scale arrangement of film cooling holes on the endwall which improves coolant efficiency in the LE region and vane-PS junction region.
Design/methodology/approach
The endwall film holes are grouped in four-holes constructal patterns. Three ways of arranging the groups are studied: based on the pressure field, the streamlines or the heat transfer field. The computational analysis is done with the k-ω SST model after validating the turbulence model properly.
Findings
By clustering the film cooling holes in four-holes patterns, the ejection of the coolant flow is stronger. The four-holes constructal patterns also improve the local coolant coverage in the “tough” regions, such as the junction region of the PS and the endwall. The arrangement based on streamlines distribution can effectively improve the coolant coverage and the arrangement based on the heat transfer distribution (HTD) has benefits by reducing high-temperature regions on the endwall.
Originality/value
A full-scale endwall film cooling design is presented considering interactions of different film cooling holes. A comprehensive model validation and mesh independence study are provided. The cooling holes pattern on the endwall is designed as four-holes constructal patterns combined with several arrangement choices, i.e. by pressure, by heat transfer and by streamline distributions.
Details
Keywords
Main Difficulties Traditionally agriculture and industry were — until recent times — the only real resources. Historical events and the political situation empeded the government…
Abstract
Main Difficulties Traditionally agriculture and industry were — until recent times — the only real resources. Historical events and the political situation empeded the government to pay the necessary attention to the economical and cultural advantages of national and international tourism. Another hindrance was the negative opinion — one of the long‐lasting consequences of the “Cultural Revolution” — about Lu‐lio (travel and sight‐seeing), which made the natives shrink from the latest ideas about tourism.
Le Ma, Richard Reed and Jian Liang
There has been declining home ownership and increased acceptance of long-term renting in many western countries including Australia; this has created a problem when examining…
Abstract
Purpose
There has been declining home ownership and increased acceptance of long-term renting in many western countries including Australia; this has created a problem when examining housing markets as there are dual demand and include both owner-occupiers and investors. The purpose of this paper is to examine the long-run relationship between house prices, housing supply and demand, and to estimate the effects of the two types of demand (i.e. owner-occupier and investor) on house prices.
Design/methodology/approach
The econometric techniques for cointegration with vector error correction models are used to specify the proposed models, where the housing markets in the Australian states and territories illustrate the models.
Findings
The results highlight the regional long-run equilibrium and associated patterns in house prices, the level of new housing supply, owner-occupier demand for housing and investor demand for housing. Different types of markets were identified.
Practical implications
The findings suggest that policies that depress the investment demand can effectively prevent the housing bubble from further building up in the Australian states. The empirical findings shed light in the strategy of maintaining levels of housing affordability in regions where owner-occupiers have been priced out of the housing market.
Originality/value
There has been declining home ownership and increased acceptance of long-term renting in many western countries including Australia; this has created a problem when examining housing markets as there are dual demand and include both owner-occupiers and investors. This research has given to the relationship between supply and dual demand, which includes owner-occupation and investment, for housing and the influence on house prices.
Details
Keywords
Jian Jin, Jindi Yao and Jianxiang Wang
To raise public awareness of protecting Buddhist temples, this study considers Hebei Province of China as an example, and explores the value of architectural planning and design…
Abstract
To raise public awareness of protecting Buddhist temples, this study considers Hebei Province of China as an example, and explores the value of architectural planning and design of Buddhist temples. After 11 Buddhist temples in Hebei Province of China are selected, the paper adopts a Delphi method and questionnaire survey method, establishes the value evaluation system from four dimensions: historical value, artistic value, scientific value, and sociocultural value; and calculates the value of the Buddhist temples’ architectural planning and design according to expert rating. Research results indicate the following. Puning Temple, Jinhe Temple, and ShiEn Temple rank at the top because they are complete extant ancient buildings and have beautiful architectural styles. Chongguang Temple and other Buddhist temples have low comprehensive score because they are severely damaged and other reasons. The comparative study indicates that Buddhist temples at different historical periods have different architectural heritage values, and different influencing factors exert different effects on the architectural heritage value. The study establishes an evaluation indicator system, studies the value of Buddhist temples’ architectural planning and design, and achieves certain innovative research perspective. The evaluation of the value of Buddhist temples’ architectural planning and design can help the public gain a better understanding of the value of temple architectural culture. This understanding benefits the preservation of the temple building heritage.
Details
Keywords
Cong Liu, Jiming Cao, Guangdong Wu, Xianbo Zhao and Jian Zuo
This study aims to explore the relationship between network position, various types of inter-organizational conflicts and project performance in the context of megaprojects.
Abstract
Purpose
This study aims to explore the relationship between network position, various types of inter-organizational conflicts and project performance in the context of megaprojects.
Design/methodology/approach
Centrality and structural holes were used to represent network position. A theoretical model was developed, and a structured questionnaire survey was conducted with construction professionals involved in megaprojects. A total of 291 valid responses were obtained, which were analyzed via structural equation modeling.
Findings
The results showed that centrality negatively impacts project performance, while structural holes do not significantly impact project performance. Centrality negatively affects task conflicts, but positively affects process conflicts and relationship conflicts. Structural holes positively impact task conflicts, but negatively impact both process conflicts and relationship conflicts. Task conflict and relationship conflict exert constructive and destructive effects on project performance, respectively, while process conflict does not significantly impact project performance. Task conflict and relationship conflict play mediating roles. Task conflict weakens while relationship conflict strengthens the relationship between centrality and project performance. Task conflict strengthens while relationship conflict weakens the relationship between structure hole and project performance.
Research limitations/implications
This study provides a reference for the implementation of network governance, inter-organizational conflict management and project performance management in megaprojects. However, the impact of dynamic changes of inter-organizational conflicts and network position on project performance has not been discussed in the context of megaprojects. Future research may explore the impact of dynamic changes of conflicts and network position on project implementation.
Originality/value
This study increases the current understanding of the impact of network position on project performance. Moreover, a new direction for network governance in the context of megaprojects is provided. This study also verified both the constructive and destructive effects of conflicts and the mediating role they play, thus supplementing the literature on inter-organizational conflict management in the construction field.
Details
Keywords
Hong Anh Vu, Viet Hung Cu, Lian Xing Min and Jian Qiong Wang
As in other developing countries, increased highway development in Vietnam provides enormous opportunities for international construction companies (ICCs). However, a prolonged…
Abstract
Purpose
As in other developing countries, increased highway development in Vietnam provides enormous opportunities for international construction companies (ICCs). However, a prolonged schedule delay (SD) can have an extremely detrimental impact on a project’s efficiency, cost and investment reputation. The purpose of this paper is to identify potential SD risk factors in international highway projects (IHPs) in Vietnam, and to explore the effects of and influences on such factors. A specific risk management framework is proposed as a useful tool for ICCs.
Design/methodology/approach
A system of SD risk indicators is presented for IHPs in Vietnam through a questionnaire survey. The system comprises 50 indicators that are grouped into 12 main factors. A structural equation model (SEM) is then used to assess the influences and mechanisms of these factors. Based on the obtained results, corresponding suggestions for preventing SD risks are presented and discussed.
Findings
First, among the 12 aforementioned major factors, the authors identify eight facors that have significant effects on IHP SDs. Second, the SEM analysis reveals that policy flaws and the fiscal ability of the owner play the most important roles, on account of their direct and indirect influences on SDs.
Originality/value
Considering stakeholders and external environmental effects, a system of indicators is introduced to explore SD risks to IHPs. In particular, an SEM is used to assess the effects of potential SD factors and characterize their interacting influences. This study could help ICCs to avoid or mitigate project delays and cost overruns in Vietnam, and also provide valuable lessons for other developing countries.