Lianyu Fu, Xueguang Li and Qiang Guo
The purpose of this paper is to present key points relating to the development of micro drill bits with high aspect ratios and to provide a solution for high aspect ratio hole…
Abstract
Purpose
The purpose of this paper is to present key points relating to the development of micro drill bits with high aspect ratios and to provide a solution for high aspect ratio hole drilling.
Design/methodology/approach
Based on the analysis of challenges in high aspect ratio hole drilling, key points for the development of micro drills bit with high aspect ratio are discussed. A design example of a micro drill bit with 0.3 mm diameter and a 7.2 mm flute length is presented. Experiments are conducted to verify the performance of the developed micro drill bit.
Findings
Helix angle, web thickness and flute land ratio are three key parameters that significantly influence the behaviour of micro drill bits with high aspect ratios. Large helix angle, web thickness and flute land ratio are beneficial in terms of improving the performance of high aspect ratio micro drill bits. Step drilling is essential to prevent drill breakage and to ensure smooth debris evacuation. Meanwhile, proper steps and drilling parameters are of great importance to complete high aspect ratio hole drilling.
Originality/value
The paper highlights key points relating to the development of micro drill bits with high aspect ratios that can provide a satisfactory solution for high aspect ratio micro drill bit design.
Details
Keywords
Xueguang Yu, Xintian Liu, Xu Wang and Xiaolan Wang
This study aims to propose an improved affine interval truncation algorithm to restrain interval extension for interval function.
Abstract
Purpose
This study aims to propose an improved affine interval truncation algorithm to restrain interval extension for interval function.
Design/methodology/approach
To reduce the occurrence times of related variables in interval function, the processing method of interval operation sequence is proposed.
Findings
The interval variable is evenly divided into several subintervals based on correlation analysis of interval variables. The interval function value is modified by the interval truncation method to restrain larger estimation of interval operation results.
Originality/value
Through several uncertain displacement response engineering examples, the effectiveness and applicability of the proposed algorithm are verified by comparing with interval method and optimization algorithm.
Details
Keywords
Xin Li, Verner Worm and Peihong Xie
The paper debunks Peter P. Li’s assertion that Yin-Yang is superior to any other cognitive frames or logical systems for paradox research. The purpose of this paper is to alert…
Abstract
Purpose
The paper debunks Peter P. Li’s assertion that Yin-Yang is superior to any other cognitive frames or logical systems for paradox research. The purpose of this paper is to alert the Chinese indigenous management researchers to the danger of Chinese exceptionalism and over-confidence.
Design/methodology/approach
To show that Peter P. Li’s assertion is doubtful, the authors identify the flaws in his analysis.
Findings
The authors find that there are three serious flaws in Peter P. Li’s analysis. First, there are four defects in the typology of cognitive frames he built in order to compare Yin-Yang with the others. Second, his understanding of dialectics in general and Hegelian dialectics in particular is flawed. And finally, without resorting to Yin-Yang, many scholars can develop theories that are equivalent to those derived from Yin-Yang.
Research limitations/implications
Due to the page limit, this paper only focuses on arguing that Yin-Yang is not superior to other cognitive frames or logical systems without going one step further to explain in which situations Yin-Yang are valuable and might be more suitable than others for helping us understand some research issues.
Practical implications
This paper implies that we should not blindly believe that the Chinese way of thinking and acting is superior to other people’s. Chinese people should be open-minded in the globalized era, not only promoting their own culture but also appreciating and learning from other cultures.
Social implications
The reduction of cultural exceptionalism and ethnocentrism can make cross-cultural communication and interaction smoother.
Originality/value
This paper is a rigorous critique on the “Yin-Yang being superior” assertion of Peter P. Li.
Interfirm contracts are a ubiquitous economic institution in market economies. In this study, we examine the determinants of one important aspect of interfirm contracts – contract…
Abstract
Interfirm contracts are a ubiquitous economic institution in market economies. In this study, we examine the determinants of one important aspect of interfirm contracts – contract duration. We begin with Joskow's (1987) study that demonstrated that contract duration is governed by mechanisms that economize transaction costs. Our study extends Joskow's study in several ways: First, while Joskow's study focuses on one particular area of extreme resource dependence, between the coal mine and the power company, we examine patterns of contract duration and their determinants across broader economic sectors, thereby providing a more general test of the key ideas in transaction cost economics. Second, we investigate the role of social institutions as a distinct mechanism underlying the design of contract duration, especially in terms of mitigating risks and transaction costs. Finally, by situating our study in China, we extend the research context beyond industrialized market societies to a transitional economy where interfirm contracts are an emerging economic institution. The empirical study is based on the analyses of information on 877 contracts from 620 firms collected in two Chinese cities, Beijing and Guangzhou, in 2000.
Yuemin Hou and Linhong Ji
The aim is to map function into structure step‐by‐step.
Abstract
Purpose
The aim is to map function into structure step‐by‐step.
Design/methodology/approach
Using bio‐inspired approach to investigate generic principle governing the formation of systems or artifacts by analogy with embryogenesis and using matrices and graphs to formalize design information.
Findings
A six‐stage design framework is proposed and represented as six models: the function model which interprets design requirements, the surrogate model which transforms the subjective intention into the objective property, the property model which illustrates basic constituents of property, the specification model which specifies abstract properties by concrete property values or equations, the feature model which transforms properties into the feature of topology and materials of the structure, and the parameter model which parameterizes the detail description of structure. The transformations between stages are achieved mainly by means of induction, duality, decision making and nonlinear programming.
Research limitations/implications
Bio‐inspired approach provides mechanisms to map function into structure.
Practical implications
A normative framework for engineering design and system design.
Originality/value
The framework distinguishes itself by biological approach, developmental process simulating to the development of embryo, induction and duality strategies to map stages, as well as mathematical representation.
Details
Keywords
The purpose of this paper is to develop a framework for the manufacturer of a make-to-order company to simultaneously negotiate with multiple customers through mediator to achieve…
Abstract
Purpose
The purpose of this paper is to develop a framework for the manufacturer of a make-to-order company to simultaneously negotiate with multiple customers through mediator to achieve order acceptance decisions (OADs).
Design/methodology/approach
The paper developed mathematical models for the manufacturer, as well as customers to revise their offers during negotiations. Moreover, the paper also proposed a method for the mediator to carry out his assigned duties to assist in negotiation. In the decision process, mediator acts as a bridge between the manufacturer and customers to reach an agreement. A numerical example is enumerated to illustrate the working mechanism and superiority of proposed framework as compared to the framework where simultaneous negotiations are carried out without the presence of mediator.
Findings
Iterative method of negotiation conducted without mediator leads to delay in reaching agreement as the aspiration level of manufacturer offer and counter-offer of customer will never cross each other. In addition, the party who submits the offer first may suffer as the opponent can take the advantage of his/her offer during negotiation, thereby, derailing the issue of fairness. Introducing mediator between the manufacturer and the customer for their negotiations could overcome these two issues. Numerical analysis clearly illustrates that, in average, the rounds of negotiation to reach an agreement can be reduced by 22 percent using proposed negotiation framework. In addition, the fairness in negotiations can be improved by 33 percent with the incorporation of mediator.
Originality/value
Through continuing research efforts in this domain, certain models and strategies have been developed for negotiation. Iterative method of negotiations without mediator will help neither the manufacturer nor the customer in terms of fairness and negotiations round to reach an agreement. To the best of the author’s knowledge, so far, this is the first instance of research work in the domain of OAD and negotiation framework that attempts to incorporate mediator for simultaneous negotiation between manufacturer and customers on multiple issues simultaneously.