bluuebunny/crossref_metadata_2025_split huggingface dataset:
Longitudinal jet ventilation calculation and application of long highway tunnel
Authors: Zhou Binghua , Xue Yiguo , Li Mingtian , Li Zhiqiang , Zhang Xueliang , Tao Yufan 
Published: February 2018

Purpose
When a vehicle passes through a long highway tunnel, the smoke it discharges accumulates in the tunnel. High smoke concentration has an important influence on the driver’s health and driving safety. The use of numerous jet fans to diffuse the smoke causes excessive energy consumption, so it is of significant practical value to design suitable tunnel ventilation.

Design/methodology/approach
The study is based on the continuum hypothesis, incompressible hypothesis, steady flow hypothesis and similar hypothesis of gas in a long highway tunnel. These hypotheses calculate the gas emissions and wind demand in a long highway tunnel given the deployment of the jet fan program.

Findings
This program selects each of the two 1120-type jet machine group and sets up 13 groups; each group has an interval of 184.5 m in the end. The analysis of air test results when the tunnel is in operation shows that CO and smoke concentrations meet the design requirements, which can provide reference for a similar engineering design later.

Originality/value
At present, a highway tunnel is recognized at home and abroad by means of clearance of longitudinal ventilation, which is 2,000 m. In view of this, this paper is based on the theory of longitudinal jet ventilation of a highway tunnel, whose length is more than 2,000 m, to calculate the ventilation and apply it to a tunnel’s ventilation design.
Human resource related factors and engineering, procurement, and construction (EPC) project success
Authors: Nguyen Huong Thanh , Hadikusumo Bonavetura H.W. 
Published: February 2018

Purpose
This paper aims to assess the impact of human resource-related factors, including human resource development (HRD) and human resource competency (HRC), on engineering, procurement and construction (EPC) project success (PS), and explore the interrelationship among these factors.

Design/methodology/approach
Structural equation modeling with the application of SPSS and AMOS software is used to test three hypotheses in the conceptual framework and analyze interrelationships among HRD, HRC and PS. A survey of 800 participants involved in EPC projects throughout Vietnam was conducted.

Findings
Results showed that HRD affects PS directly. HRC has a direct impact on PS; HRD has a direct impact on HRC, and thus, HRD also affects PS indirectly through HRC.

Originality/value
The study indicates that the development of a competent human resource for EPC project implementation plays a considerable role in EPC PS. The findings also give project professionals tools for improving HRD and HRC to increase the possibility of EPC PS.
Securing the embeddedness of psychosocial diffusion indicators into the Turkish construction industry
Authors: Goulding Jack Steven , Ezcan Volkan , Sutrisna Monty 
Published: February 2018

Purpose
The paper aims to investigate the employee–stakeholder engagement on business performance. A psychosocial approach was used to evaluate employees’ perception and role engagement on organisational performance, cognisant of: strategy development; leadership; fiscal acuity; employees’ skills, empowerment; supply chain relationships; external stakeholders and wider societal beneficiaries.

Design/methodology/approach
This research is context-bound to the Turkish construction industry. Findings generated from literature established a set of evidenced-based priorities for further investigation. A case study approach was conducted with three large architecture, engineering and construction (AEC) organisations to define psychosocial diffusion indicators and priorities for future uptake.

Findings
Initial findings on psychosocial diffusion indicators and their impact on business performance are presented through a psychosocial diffusion model. Three interconnected facets are proffered for future uptake: capability (responsiveness), capability (flexibility) and capability (competence).

Research limitations/implications
Findings are exclusively bound to the sample frame in question. No attempt has been made to undertake detailed cross-analysis/correlation to support internal/external consistency, validity or reliability.

Practical implications
Organisations are able to reflect on their core business strategy to appreciate how psychosocial diffusion can be operationalised.

Social implications
This work impinges on social factors embedded within (and across) organisational boundaries, including the AEC supply chain. It also relates to employer/employee relationships, psychological functioning and employee well-being.

Originality/value
Originality rests with the identification of construction-related psychosocial indicators. It contributes to the wider body of knowledge on embedding psychosocial indicators into organisational systems and processes, adding further insight into systems thinking and business transformation.
G-SECI model-based knowledge creation for CoPS innovation: the role of grey knowledge
Authors: Li Min , Liu Huimin , Zhou Jing 
Published: February 2018

PurposeThis paper aims to propose a new knowledge creation model called Grey SECI (G-SECI), study the knowledge creation mechanism and the relationship between knowledge creation models and innovation performance during complex product systems (CoPSs) development. Research and development of CoPSs relies heavily on knowledge creation. However, most scholars have studied CoPS innovation stages from the view of design process of system products, focussing on functional management and project management during the R&D process for CoPS. Attention is lacking with regards to the key and essence of creating a complex technology: the creation of knowledge.Design/methodology/approachModified from the classic SECI model’s spiral process of knowledge creation, a grey-SECI (G-SECI) knowledge creation model is here proposed vis-à-vis three knowledge categories: explicit knowledge, grey knowledge and tacit knowledge. Then, this paper further analyzes the effects of knowledge creation from the perspective of individual and the view of organization. Besides, an empirical study is conducted.FindingsStatistical analysis indicates that there are three main paths of knowledge creation: individual experience knowledge acquisition, individual communication and reflection and organizational knowledge learning. Results further suggest that knowledge internalization by practice (KIP) is the key mode of knowledge creation, as well as the most important step for high-quality CoPS performance. Moreover, individual innovation performance is influenced by knowledge internalization by reflection and KIP; and organization innovation performance is influenced by knowledge combination and knowledge systematization.Research limitations/implicationsThe coverage of geographical distribution is limited. Therefore, there are no data from foreign enterprises. The impact of different geographical cultures on CoPS knowledge creation model could be further investigated; in addition, the statistical analysis results of this study need to be further verified in other industries.Practical implicationsThis paper provides a series of insights for CoPS project leaders. The results may also provide practical guidance for the related management personnel in the fields of human resource training, project planning, project quality and technology R&D in CoPS R&D management.Originality/valueThe paper’s main contribution is to modify classic SECI knowledge conversion model by introducing grey knowledge and build a new G-SECI knowledge creation model. Besides, the paper adds empirical evidence on the knowledge creation paths in CoPS and reveals that internalization by practice is the key mode of knowledge creation.
Knowledge heterogeneity, social capital, and organizational innovation
Authors: Tsai Fu-Sheng 
Published: February 2018

PurposeObserving across four comparative case organizations, the purpose of this paper is to identify two sources of contingency (i.e. construct and contextual contingency) for the relationship between knowledge heterogeneity and innovation.Design/methodology/approachThe contingencies was explored by conducting a comparative case analyses with rich qualitative data extracted and interpreted from four case companies.FindingsFirst, the construct contingency is examined by refining knowledge heterogeneity into three dimensions: domain, process, and context heterogeneity. Specifically, the author proposed that knowledge heterogeneity in domain is associated with innovation in an inverted U-shape, while heterogeneity in process and context dimensions both negatively influence innovation. Second, contextual contingency is studied. The author proposed that: trust positively moderates the relationship between knowledge heterogeneity and innovation; depending on the knowledge owner attributes, centralization positively or negatively moderates the relationship between heterogeneous knowledge and innovation; shared knowledge vision positively moderates the relationship between knowledge heterogeneity and innovation.Originality/valueThe influences of knowledge heterogeneity on innovation have yet been inconsistent. The present study set to reconcile such inconsistency with a solution of contingencies that intervene the heterogeneity-innovation relationship. These results offer useful references for future large-scaled, quantitative studies.
Sustainable consumption
Authors: Ibrahim Hafedh , Al-Ajlouni Mahmoud Mohammad Q. 
Published: February 2018

PurposeWhile there has been a great deal of research to distinguish the factors that promote the adoption of sustainable consumption, however there has been a very little attention given to the contribution of justice, coping appraisal, and psychological distance. The purpose of this paper is to explore the potential role of deontic justice, protection motivation, and construal level theories to elucidate the green purchase intention.Design/methodology/approachData were collected from 471 participants in a laboratory experiment. Then, structural equation modeling was carried out to analyze the data.FindingsProtection motivation theory is valuable to apply specifically since it introduces the concept of coping appraisal. The findings demonstrate that deontic justice theory (DJT) is a suitable framework that can be employed to shed more light on sustainable consumption. The study shows that consumer can conceptualize a green product at different levels of concreteness or abstraction.Originality/valueThis study is a pioneering effort to look at sustainable consumption within the context of DJT. It departs from the more traditional research by repositioning moral obligation as the primary driver of green purchase intention and by elucidating when green purchase intention is elevated in investigating the moderating role of mindset.
Influence of thermal interface material on thermal performance of InGaAlP thin-film SMD LED mounted on different substrate packages
Authors: Raypah Muna E. , Devarajan Mutharasu , Sulaiman Fauziah 
Published: February 2018

Purpose
Proper thermal management is a key to improve the efficiency and reliability of light-emitting diodes (LEDs). This paper aims to report the influence of applying thermally conductive materials on thermal performance of indium gallium aluminum phosphide (InGaAlP)-based thin-film surface-mounted device (SMD) LED.

Design/methodology/approach
The LED thermal and optical parameters were determined using the combination of thermal transient tester (T3Ster) and thermal and radiometric characterization of power LEDs (TeraLED) instruments. The LED was mounted on FR4, 2W and 5W aluminum (Al) package substrates. Measurements were carried out by setting different boundary conditions: air between LED package and substrate and using thermally conductive epoxy (TIM A) and adhesive (TIM B) of thermal conductivity 1.67 and 1.78 W/mK, respectively.

Findings
For LED mounted on FR4 package, the total real thermal resistance is improved because of TIM B by 6 and 9 per cent at 50 and 100 mA, respectively. Likewise, the relative decrease in total thermal resistance of LED on 2W Al package is about 9 and 11 per cent. As well, for LED mounted on 5W Al package, the total real thermal resistance is reduced by 2 and 4 per cent.

Originality/value
No much work can be found in the literature on thermal interface material effects on thermal performance of low-power SMD LED. This work can assist in thermal management of low-power LEDs.
Automated assembly of discrete parts using fused deposition modeling
Authors: Patterson Albert E. , Bahumanyam Parvathavadhani , Katragadda Raghu , Messimer Sherri L. 
Published: February 2018

PurposeA useful potential application of additive manufacturing (AM) techniques is in automated assembly of existing discrete parts via printing of new material onto two or more parts simultaneously to form joints between them. The purpose of this paper is to explore the concept of extrusion-based AM for automated assembly, examine potential concerns and perform validation to test the feasibility and value of such an assembly method.Design/methodology/approachTo validate the theory and address potential concerns, six factorial-designed sets of joined ABS, PETG and PLA samples were manufactured and tensile tested. Each set contained two replications of four samples and was a unique part-joint material combination. To better interpret the results, a new static material characterization was completed on the materials used, as well as joint tests using four mechanical and chemical methods for each material. In total, 69 test articles were examined.FindingsThe tests showed that the joints were effective and strong, even under the inherently eccentric geometry. While there was some variance between replications, in almost every case, the AM joints were found to be equal or superior to those made by traditional methods. ANOVA showed variance in which factors were significant between sets, but all cases were shown to satisfy the Fisher Assumptions at a significance of a = 0.10.Originality/valueThis paper develops and validates a new application of extrusion-based AM. When developed further, this application is expected to increase the commercial application range and industrial efficiency of fused deposition modeling and AM in general. The results of this study should provide a link between traditional automated assembly methods and AM. This paper also provides some original AM material characterization data and observations on material behavior under eccentric loading.
3D sand mould printing: a review and a new approach
Authors: Zhao Donghua , Guo Weizhong , Zhang Baibing , Gao Feng 
Published: February 2018

Purpose
The purpose of this paper is to review available technologies, analyse their features, propose a new approach of 3D sand mould printing based on line forming, introduce the manufacturing principle and show advantages of this approach, especially for larger parts with large Z steps in the build, such as 2 mm stepwise.

Design/methodology/approach
This paper introduces 3D sand mould printing, compares and analyses technological process and existing fabrication approaches among available technologies first. Then, a new approach of 3D sand mould printing is proposed to improve build speed. In addition, the proposed system will be analysed or benchmarked against existing systems.

Findings
A new approach based on line forming of sand mould printing is put forward by reviewing and analysing available technologies, to improve build speed from the aspect of basic moulding movement instead of optimization of moulding methods and process parameters. The theoretical calculation and analysis shows that build speed can be improved greatly, and it is more suitable for the manufacture of large-scale casting’s sand mould when considering dimensional accuracy and printing error, as well as uniformity of each layer.

Research limitations/implications
The specific implement scheme of line forming and nozzle’s specific structure of this new approach need further study.

Practical implications
Much higher build speed of 3D sand mould printing with new approach brings evident implication for moulds companies and manufacturing industry, having a far-reaching influence on the development of national economy.

Originality/value
This paper reviews available technologies and presents a new approach of 3D sand mould printing for the first time. Analysis of the new approach shows that this new method of sand mould printing can boost build speed greatly. So, its application prospect is great.
Study of the relationship between dimensional performance and manufacturing cost in fused deposition modeling
Authors: Haghighi Azadeh , Li Lin 
Published: February 2018

Purpose
Quantifying and controlling the quality characteristics of parts produced by additive manufacturing (AM) processes has attracted significant interest in the research community. However, to increase the sustainability of AM processes, such quality characteristics need to be assessed together with life cycle performance of AM processes such as energy and material consumption and manufacturing cost. Although a few studies have been performed for several quality characteristics, i.e. surface roughness and tensile strength, the relationship between dimensional performance and manufacturing cost is still not well known for AM processes.

Design/methodology/approach
In this paper, a comprehensive study of the dimensional performance and manufacturing cost of fused deposition modeling AM process is performed. Design of experiment technique is used, and the correlation of different cost components and the dimensional accuracy of parts are statistically studied.

Findings
The optimum process parameters for simultaneously optimizing the dimensional performance and manufacturing cost are identified. The analysis shows that as opposed to traditional manufacturing processes, obtaining a better dimensional performance is not necessarily associated with higher cost in the AM processes.

Originality/value
Almost no study and analysis for the combined dimensional performance and manufacturing cost has been performed for AM processes in the literature. It is known that within the context of traditional manufacturing processes, a natural trade-off governs the pursuit of higher dimensional performance and the manufacturing cost. However, as the AM process has a different nature compared with traditional manufacturing processes, the relationship between manufacturing cost and dimensional performance of parts has to be studied. Understanding this relationship will also help to establish a cost-optimal and sustainable tolerance allocation strategy in assemblies with AM components.
Fully resolved numerical simulations of fused deposition modeling. Part I: fluid flow
Authors: Xia Huanxiong , Lu Jiacai , Dabiri Sadegh , Tryggvason Gretar 
Published: February 2018

Purpose
This paper aims to present a first step toward developing a comprehensive methodology for fully resolved numerical simulations of fusion deposition modeling (FDM).

Design/methodology/approach
A front-tracking/finite volume method previously developed for simulations of multiphase flows is extended to model the injection of hot polymer and its cooling down.

Findings
The accuracy and convergence properties of the new method are tested by grid refinement, and the method is shown to produce convergent solutions for the shape of the filament, the temperature distribution, contact area and reheat region when new filaments are deposited on top of previously laid down filaments.

Research limitations/implications
The present paper focuses on modeling the fluid flow and the cooling. The modeling of solidification, volume changes and residual stresses will be described in Part II.

Practical implications
The ability to carry out fully resolved numerical simulations of the fusion deposition process is expected to help explore new deposition strategies and provide the “ground truth” for the development of reduced-order models.

Originality/value
The present paper is the first fully resolved simulation of the deposition in fusion filament modeling.
Key competences of logistics and SCM professionals – the lifelong learning perspective
Authors: Kotzab Herbert , Teller Christoph , Bourlakis Michael , Wünsche Sebastian 
Published: February 2018

Purpose
The purpose of this study is to identify specific qualifications and competences required within the field of logistics and supply chain management from the perspective of lifelong learning and hierarchical level. It also reveals a hierarchy level-specific job profile for logistics and supply chain management jobs based on the European Framework for Key Competences and the German Federal Employment Agency.

Design/methodology/approach
A review of the literature on competences and skills in the field of logistics is combined with an analysis of 832 job postings by means of content analyses and thematic mapping.

Findings
The academic literature discusses more than 280 skills and competences related to the job profile of logistics and supply chain managers. The majority of these skills represent social skills. Analyses of job postings show significant differences in the required portfolio of skills and competences depending on the hierarchical level of the position. Contrary to the literature, job postings include more cognitive competences and meta-competences than social skills.

Originality/value
The first contribution of this research is that competences were examined from the perspective of lifelong learning, revealing how this is applied in the field of logistics. The second is that this conceptual framework can be utilised to compare skills and competences between different hierarchical levels. The third contribution refers to identifying a set of skills and competences different to what had been presented in the literature.
Are bio-economy dimensions new stream of the knowledge economy?
Authors: Ahmed Elsadig Musa 
Published: February 2018

Purpose
The purpose of this paper is to explain bio-economy dimensions as a new stream of knowledge-based economy that exists in the new era of the information and communications technology.

Design/methodology/approach
Bio-economy refers to the production of a wide range of goods and services from plant, animal and forest-based material. It is more than just grain-based bio-fuels or bio-diesel as extensively highlighted in Latin America. It is related to biotechnology and other bio-activities based on knowledge generated from the bio-activities and extension of the knowledge-based economy.

Findings
The main concern of developing bio-economy is the environmental damage caused through the undesirable output produced by the bio-economy activities. Bio-economy is centred on research and development (R&D) collaborations across different sectors, including the public and private sectors, in order to breakthrough new products through invention and innovation.

Originality/value
For bio-economy to be realised and put into practice, it should have a well-developed regulatory framework as a platform in order to run and work smoothly.