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1 – 10 of over 1000Zhuo Xiong, Yongnian Yan, Renji Zhang and Xiaohong Wang
Aims to provide information on organism manufacturing engineering (OME), a newly proposed interdisciplinary research area.
Abstract
Purpose
Aims to provide information on organism manufacturing engineering (OME), a newly proposed interdisciplinary research area.
Design/methodology/approach
A conceptual discussion and approach are taken.
Findings
OME is based on layer‐by‐layer RP principles and the integration of the new advancement of manufacturing science, biomaterials, cell molecular biology and developmental biology. OME aims to construct live tissues and organs through controlled assembly of 3D cell structure with the principles and methods of modern manufacturing science and life science.
Originality/value
Focuses on important processes for indirect and direct cell assembly using OME approaches.
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Keywords
Suzanne M. Ogilby, Xinmei Xie, Yan Xiong and Jin Zhang
Recent literature suggests that sin firms (firms in tobacco, gambling and alcohol industries) have lower institutional ownership, fewer analysts following, higher abnormal returns…
Abstract
Purpose
Recent literature suggests that sin firms (firms in tobacco, gambling and alcohol industries) have lower institutional ownership, fewer analysts following, higher abnormal returns and higher financial reporting quality. This study aims to investigate empirically how sin firms engage in real activities manipulation (RAM) to meet earnings benchmarks in comparison to non-sin firms.
Design/methodology/approach
The authors examine two types of RAM, namely, Cutting discretionary expenditures including research and development (R&D), SG&A and advertising to boost earnings. Extending deep discount or lenient credit terms to boost sales and/or overproducing to decrease COGS to increase gross profit. Consistent with Roychowdhury (2006), the authors use abnormal discretionary expenditures as the proxy for expenditure reduction manipulation and abnormal production costs as the proxy for COGS manipulation.
Findings
The results for the abnormal discretionary expense model suggest that sin firms do not engage in RAM of advertising, R&D, SG&A expense to just meet earnings benchmarks. The results for the production costs model suggest that sin firms do not engage in COGS manipulation to just meet earnings benchmarks. The results are robust after controlling accrual-based earnings management (AEM). Overall, in this setting, these results suggest that managers of sin firms engage less in RAM to meet earnings benchmarks.
Originality/value
The findings are of interest to investors, auditors, regulators and academics with respect to financial statement analysis and earnings quality.
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Yan Li, Dichen Li, Bingheng Lu, Dajing Gao and Jack Zhou
The purpose of this paper is to review the current status of additive manufacturing (AM) used for tissue engineering (TE) scaffold. AM processes are identified as an effective…
Abstract
Purpose
The purpose of this paper is to review the current status of additive manufacturing (AM) used for tissue engineering (TE) scaffold. AM processes are identified as an effective method for fabricating geometrically complex objects directly from computer models or three-dimensional digital representations. The use of AM technologies in the field of TE has grown rapidly in the past 10 years.
Design/methodology/approach
The processes, materials, precision, applications of different AM technologies and their modified versions used for TE scaffold are presented. Additionally, future directions of AM used for TE scaffold are also discussed.
Findings
There are two principal routes for the fabrication of scaffolds by AM: direct and indirect routes. According to the working principle, the AM technologies used for TE scaffold can be generally classified into: laser-based; nozzle-based; and hybrid. Although a number of materials and fabrication techniques have been developed, each AM technique is a process based on the unique property of the raw materials applied. The fabrication of TE scaffolds faces a variety of challenges, such as expanding the range of materials, improving precision and adapting to complex scaffold structures.
Originality/value
This review presents the latest research regarding AM used for TE scaffold. The information available in this paper helps researchers, scholars and graduate students to get a quick overview on the recent research of AM used for TE scaffold and identify new research directions for AM in TE.
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Cong Bang Pham, Kah Fai Leong, Tze Chiun Lim and Kerm Sin Chian
The purpose of this paper is to develop a new bio‐plotter using a rapid freeze prototyping (RFP) technique and to investigate its potential applications in fabricating tissue…
Abstract
Purpose
The purpose of this paper is to develop a new bio‐plotter using a rapid freeze prototyping (RFP) technique and to investigate its potential applications in fabricating tissue scaffolds.
Design/methodology/approach
The development of cryogenic bio‐plotters including design steps of hardware as well as software is addressed. Effects of structural parameters and process parameters on the properties of tissue scaffolds are demonstrated through simulation and experimental results.
Findings
The paper finds that the RFP method is suitable to fabricate macro‐ and micro‐porous scaffolds, especially for temperature‐sensitive polymers. In addition, through simulation and experiment results, it also shows that macro‐ and micro‐porous properties could be manipulated by structural parameters and process parameters, respectively.
Research limitations/implications
This paper shows that the chamber temperature is an important process parameter that can provide the means to control the micro‐porous structure of the scaffold. However, if the temperature is set too high, the fiber is frozen so rapidly that it cannot be fused with other fibers of the previous layer. On the other hand, if the temperature is too low, the fiber is not solidified fast enough. So, the chamber temperature, together with extruding pressure and nozzle velocity, must be optimized, which will be further investigated in future work.
Originality/value
The RFP technique is successfully proposed to construct 3D tissue scaffolds. In addition, a new cryogenic bio‐plotter is designed and developed, in which general algorithms of rapid prototyping method are presented and implemented, facilitating the fabrication of tissue scaffolds with various cross‐hatching patterns in a RFP process.
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Tian Wang, Yangyang Liang and Zhong Zheng
The purpose of this paper is to investigate manufacturer encroachment and distributor encroachment in a three-echelon supply chain consisting of an upside manufacturer, an…
Abstract
Purpose
The purpose of this paper is to investigate manufacturer encroachment and distributor encroachment in a three-echelon supply chain consisting of an upside manufacturer, an intermediate distributor and a downside retailer.
Design/methodology/approach
In this paper, the authors use the optimization theory to mathematize the proposed question and build a model. First, the authors consider sequential quantity decisions, where the encroacher decides on the direct selling quantity after determining the retailer's order quantity. Second, the authors relax this sequential decision process assumption by reconsidering a circumstance in which quantity decisions are decided simultaneously.
Findings
In contrast to previous studies, this study shows that in three-echelon supply chains, the upside firm is more likely to encroach compared with the downside firm. The “bright side” of encroachment exists for all players only when the encroachment cost is at a moderate level. However, in manufacturer encroachment under simultaneous quantity decisions, the “bright side” skips the distributor but benefits the retailer directly as the encroachment cost increases from zero to a certain level. The main reason lies in that the distributor loses its pricing power because the end-market has been disturbed by the simultaneous quantity decisions. A comparison of the results of sequential and simultaneous quantity decisions reveals the merit of simultaneous quantity decisions. The authors find that the intermediate role (the distributor in our model) in three-echelon supply chains may benefit more from simultaneous quantity decisions. That is, the distributor may achieve a better profit even in a market with intensified competition.
Originality/value
The findings of this paper contribute to the marketing science literature on encroachment. The majority of existing literature has focused on manufacturer encroachment in two-echelon supply chains. This paper innovatively investigates and compares manufacturer encroachment and distributor encroachment in a three-echelon supply chain.
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Dietmar Drummer, Sandra Cifuentes‐Cuéllar and Dominik Rietzel
Fused deposition modeling (FDM) is a layer by layer technology with the potential to create complex and individual parts from thermoplastic materials such as ABS. The use of…
Abstract
Purpose
Fused deposition modeling (FDM) is a layer by layer technology with the potential to create complex and individual parts from thermoplastic materials such as ABS. The use of Polylactic acid (PLA) and tricalcium phosphate (TCP) as resorbable composite is state of the art in tissue engineering and maxillofacial surgery. The purpose of this paper is to evaluate the processing conditions and the performance of parts (e.g. mechanical properties) manufactured with a FDM machine.
Design/methodology/approach
In this paper, the general suitability of PLA for the processing with FDM is evaluated and material specific effects (e.g. crystallization and shrinkage) are shown. Therefore, the characterization of the semi‐crystalline biodegradable material by thermal, mechanical and microscopic analysis is carried out.
Findings
Facts, which affect the functional properties of the samples, are analyzed. Among them, the processing temperature and sample size significantly affect the morphology of the final components. Components from PLA/TCP with sufficient mechanical properties for their potential use as scaffolds are obtained.
Originality/value
Thus, the paper shows that by thermal analysis it is possible to identify major influences on processing and part properties.
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Keywords
Abstract
Purpose
This study aims to use the new product development (NPD) perspective to understand why traditional leading telecom equipment companies, such as Alcatel-Lucent (ALu), have stagnated but the newcomer Huawei has achieved steady growth.
Design/methodology/approach
This paper takes the form of a comparative case study.
Findings
Three significant differences in NPD process between the companies were discovered: first, although both companies claim that they are market-oriented, Huawei’s NPD projects are customer-driven, and ALu projects are joint considerations of customer demand and technology leadership; second, Huawei uses a design-to-value strategy, and ALu applies a design-for-quality-premium strategy; third, resources are allocated and shared at the corporate level in Huawei and at the business division level in ALu.
Practical implications
This study offers several implications for NPD managers. First, holding a market leader position is more important than being a technology leader. Companies must fundamentally change their mind-sets, restructure NPD models and prioritize and empower marketing and sales departments in the decision-making and management of NPD projects. Second, to maximize customer value, managers must balance cost and quality and avoid overengineering. A quality premium no longer necessarily leads to product competitiveness. Third, to improve the efficiency of NPD performance, companies must build up a mechanism to enable across-boundary resources.
Originality/value
This study highlights a number of key NPD strategy issues. It was conducted in the telecom equipment industry, but NPD managers of other industries will also gain useful insights from the discussion.
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Jie Xiong, Jie Yan, Kun Fu, Ke Wang and Yuanqiong He
This paper aims to understand the role of government played in the innovation process during the social crisis, and to investigate the innovation activities of the authoritarian…
Abstract
Purpose
This paper aims to understand the role of government played in the innovation process during the social crisis, and to investigate the innovation activities of the authoritarian state when dealing with social crisis.
Design/methodology/approach
Secondary data pertaining to eight impactful technological innovations in China during the COVID-19 crisis reveal how interactions and joint efforts by commercial firms and government organizations emerged as spontaneous responses.
Findings
The analysis of eight innovations – health code adoption, health omnichannel construction, noncontact service provision, distance education provision, public emotion consolation service, cross-boundary project promotion, cloud office adoption and medical material production – reveals a matrix of best practices that details the roles of government (controller or endorser) and the value creation orientation (pro-social or pro-economic value).
Originality/value
This study enriches innovation literature by providing a new perspective on the relationship between governmental force and technological innovation during social crises. As these new insights reveal, technological innovation can contribute to social crisis management. China’s example provides helpful implications for other countries suffering from the COVID-19 crisis.
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Zhou Zhang, Xiaoping Li, Jie Xiong, Jie Yan, Lu Xu and Ruoxi Wang
In the ongoing Industry 4.0 era, the internet of things (IoT) has become a global race in the current information technology climate. However, little is understood about the…
Abstract
Purpose
In the ongoing Industry 4.0 era, the internet of things (IoT) has become a global race in the current information technology climate. However, little is understood about the pattern of the global competitive arena or its players’ set up strategy. This paper aims to attempt to compare the cross-country development of the IoT industry. In particular, from the lens of industrial policies, this paper highlights how China, as a latecomer, gains momentum to emerge victorious as a leader in this global race.
Design/methodology/approach
Based on five dimensions, namely, foundation, trajectory, characteristic, application and social impacts, this paper presents the evolution of the IoT industry in the USA, European Union, Japan, South Korea and China. From the lens of windows of opportunities, this paper analyzes how China seized the opportunity with the emerging technology, thereby, enabling it to create a competitive advantage.
Findings
This paper finds that China’s IoT industry takes a distinct trajectory, where scientific institutions, enterprises and governmental policies collaborate in unison, during which the first phase was when scientific research institutions introduced the conceptual new technology from developed countries. This technological foresight allowed for the identification and realization of critical technologies, strategic fields and technological trends. The second phase was the continuous dissatisfaction of capabilities of critical technologies, which creates disruptions that significantly altered the environment of technological competition.
Originality/value
This paper provides a comprehensive and comparative review of IoT industries in a global context, with the critical and influential role of the windows of opportunities on those enterprises lagging behind the technological wave.
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Chengqi Yan, Namachivayam Karthik, Yonghai Kang and Dangsheng Xiong
This paper aims to fabricate nickel-aluminum (Ni-Al)-based self-lubricating composite coating on aluminum (Al) alloy by mechanical milling (MM).
Abstract
Purpose
This paper aims to fabricate nickel-aluminum (Ni-Al)-based self-lubricating composite coating on aluminum (Al) alloy by mechanical milling (MM).
Design/methodology/approach
A new carrier transport (CT) way was designed to solve the slippage fracture of the coating due to silver (Ag) accumulation (Ag powders were cold welded with nickel [Ni] powders by MM in advance to avoid accumulation, then Al powder and samples were added to fabricate the coating).
Findings
Microstructure analysis reveals that the solid lubricant Ag exists as particles in the composite coating via CT technique, which is different from the typical morphology (strip-type) of Ag tailored by normal methods. The unique granular form of Ag can effectively avoid the gliding fracture of the coating, thus forming an efficacious lubrication film on the worn surface, which is responsible for the excellent tribological properties of the coating.
Practical implications
Most of the papers reported that coatings synthesized by MM mainly concentrated on hard coatings, but the fabrication of self-lubricating coatings have not yet reported.
Originality/value
The uniform dispersion of solid lubricant Ag can effectively solves a fatal problem that the fracture failure of coating triggered by the Ag accumulation. This experiment provides a novel method for preparation of self-lubricating coating by MM.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-01-2020-0030
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