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1 – 10 of over 16000Xunlei Shi, Qingyuan Wu, Jianjian Deng, Ken Chen and Jiwen Zhang
The purpose of this paper is to propose a strategy for the final assembly of helicopter fuselage with weak rigidity parts and mismatched jointing butt ends.
Abstract
Purpose
The purpose of this paper is to propose a strategy for the final assembly of helicopter fuselage with weak rigidity parts and mismatched jointing butt ends.
Design/methodology/approach
The strategy is based on path planning methods. Compared with traditional path planning methods, the configuration-space and collision detection in the method are different. The obstacles in the configuration-space are weakly rigid and allow continuous contact with the robot. The collision detection is based on interference magnitudes, and the result is divided into no collision, weak collision and strong collision. Only strong collision is unacceptable. Then a compliant jointing path planning algorithm based on RRT is designed, combined with some improvements in search efficiency.
Findings
A series of planning results show that the efficiency of this method is higher than original RRT under the same conditions. The effectiveness of the method is verified by a series of simulations and experiments on two sets of systems.
Originality/value
There are few reports on the automation technology of helicopter fuselage assembly. This paper analyzes the problem and provides a solution from the perspective of path planning. This method contains a new configuration-space and collision detection method adapted to this problem and could be intuitive for the jointing of other weakly rigid parts.
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Xiuxia Sun, Fangwei Zhu and Mouxuan Sun
This paper aims to explore the ways to solve the dilemma of balancing between efficiency and flexibility in project-oriented organizations (POOs). It investigates the…
Abstract
Purpose
This paper aims to explore the ways to solve the dilemma of balancing between efficiency and flexibility in project-oriented organizations (POOs). It investigates the characteristic of the relationship between efficiency and flexibility in the context of POOs. Based on the framework of organizational design, this study tries to open the “black box” of how POOs make a balance between efficiency and flexibility, and examines the influence of organizational design in this process.
Design/methodology/approach
This study is a comparative multiple case study based on four project-oriented enterprises, whose relationships between efficiency and flexibility are diverse from one another. It follows the process of building theory from case study, applying within-case and cross-case analysis and replication logic in shaping hypotheses.
Findings
The results show that the relationship between efficiency and flexibility in POOs can be divided into four different situations. The contradictory factors are identified as functional structure and project structure, standardized process and temporary plan, as well as strategic-level centralization and project-level decentralization. It is found that the key to achieve a balance between efficiency and flexibility is to coordinate the relationship of contradictory factors through the effective integration of organizational level and project level.
Originality/value
This study introduces the framework of organizational design in solving the dilemma of balancing between efficiency and flexibility, responding to the call for developing the project management theory from a strategic perspective. It provides theoretical support for POOs to achieve balancing between efficiency and flexibility, and suggests an effective synergy of organizational design in both organizational and project level.
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Talat Afza and Muhammad Amir Rashid
The purpose of this exploratory paper is to explore and categorize the impediments which surround the remote women entrepreneurs and limit their growth opportunities to be…
Abstract
Purpose
The purpose of this exploratory paper is to explore and categorize the impediments which surround the remote women entrepreneurs and limit their growth opportunities to be successful entrepreneurs in Pakistan.
Design/methodology/approach
The paper is based on the primary data collected through interviews and focus group discussions with the remote women entrepreneurs from selected cities across four provinces of Pakistan.
Findings
Social and gender discrimination, lack of access and control over resources, limited educational opportunities, weaker family support, absence of self‐actualization, and little entrepreneurial orientation are few impediments classified as barriers to the growth of remote women entrepreneurs in Pakistan.
Research limitations/implications
Research findings will help the future researchers understand the characteristics of remote women entrepreneurs residing in Pakistan, moreover, the findings of this paper also provide a panoramic view about the social and working conditions prevailing in Pakistan for women entrepreneurs.
Practical implications
The findings of this paper will provide the baseline information to the government and strategists to develop a policy framework to boost the entrepreneurial culture for women in Pakistan.
Originality/value
This paper intends to identify the hazards, which restrain growth opportunities for women dwelling in remote parts of Pakistan. It may be termed as an exploratory survey for the future researchers to further probe the issue of women entrepreneurship in Pakistan and evolve a suitable model for development of marginalized women entrepreneurs to grow into mature entrepreneurs.
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Karen D. W. Patterson, Michelle Arthur and Marvin Washington
Rigid environments, those with exceptionally strong cultural and traditional barriers to change, present unique challenges for institutional entrepreneurs attempting to initiate…
Abstract
Rigid environments, those with exceptionally strong cultural and traditional barriers to change, present unique challenges for institutional entrepreneurs attempting to initiate change. We utilize such a setting to examine what support mechanisms, both individual and contextual, have been utilized when attempting change in rigid environments. We examine the case of successful and unsuccessful attempts to make golf more inclusive to women. Our research supports the claim that rigid environments require more complex combinations of support mechanisms than other settings, illustrating the importance of institutions in both enabling and constraining change in such settings.
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Jan Vanfleteren, Thomas Loeher, Mario Gonzalez, Frederick Bossuyt, Thomas Vervust, Ingrid De Wolf and Michal Jablonski
In the past 15 years stretchable electronic circuits have emerged as a new technology in the domain of assembly, interconnections and sensor circuits and assembly technologies. In…
Abstract
Purpose
In the past 15 years stretchable electronic circuits have emerged as a new technology in the domain of assembly, interconnections and sensor circuits and assembly technologies. In the meantime a wide variety of processes with the use of many different materials have been explored in this new field. The purpose of the current contribution is for the authors to present an approach for stretchable circuits which is inspired by conventional rigid and flexible printed circuit board (PCB) technology. Two variants of this technology are presented: stretchable circuit board (SCB) and stretchable mould interconnect (SMI).
Design/methodology/approach
Similarly as in PCB 17 or 35 μm thick sheets of electrodeposited or rolled‐annealed Cu are structured to form the conductive tracks, and off‐the‐shelf, standard packaged, rigid components are assembled on the Cu contact pads using lead‐free solder materials and reflow processes. Stretchability is obtained by shaping the Cu tracks not as straight lines, like in normal PCB design, but as horseshoe shaped meanders. Instead of rigid or flexible board materials, elastic materials, predominantly PDMS (polydimethylsiloxane), are used to embed the conductors and the components, thus serving as circuit carrier. The authors include some mechanical modeling and design considerations, aimed at the optimization of the build‐up and combination of elastic, flexible and rigid materials towards minimal stress and maximum mechanical reliability in the structures. Furthermore, details on the two production processes are given, reliability findings are summarised, and a number of functional demonstrators, realized with the technologies, are described.
Findings
Key conclusions of the work are that: supporting the metal meanders with a flexible carrier prior to embedding in an elastic substrate substantially increases the reliability under mechanical stress (cyclic uniaxial stretching) of the stretchable interconnect and the transition areas between rigid components and stretchable interconnects are the zones which are most sensitive to failure under mechanical stress. Careful design and technology implementation is necessary, providing a gradual transition from rigid to flexible to stretchable parts of the circuit.
Originality/value
Technologies for stretchable circuits, with the same level of similarity to standard PCB manufacturing and assembly, and thus with the same high potential for transfer to an industrial environment and for mass production, have not been shown before.
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Pauline Anne Loewenberger, Mark Newton and Kylie Wick
This paper aims to demonstrate the effective development of creative and innovative capability in a rigid bureaucratic public sector environment of an area of the British…
Abstract
Purpose
This paper aims to demonstrate the effective development of creative and innovative capability in a rigid bureaucratic public sector environment of an area of the British Transport Police, championed by the Area Commander and informed by extant literature.
Design/methodology/approach
The focus is on an intervention that addressed two related issues suggested by extant literature, cognitive blocks to creative thinking and organisational barriers. A diagnostic assessment of the climate for creativity prompted reflection leading to simultaneous interventions, combining supervisory and senior management support with a structured process of creative problem solving focusing on problems generated at a strategic level.
Findings
This has proved highly effective. At the end of the first year, five six-week cycles had already resulted in more than 600 new ideas, of which 52 were in the pipeline and 13 had already been endorsed. Few required financial investment and have increased effectiveness and optimised use of resources – literally doing more with less. Evidence is emerging of a climate more supportive of creativity and innovation.
Practical implications
Positive outcomes have significant implications for the enhancement of creativity and innovation through intrinsic motivation. This example has potential for other public service organisations.
Originality/value
Simultaneous interventions across multiple levels are rare. That this has been achieved in a rigid bureaucratic environment public sector organisation adds to the unique value of this contribution.
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Reports on the industrial robots papers presented at the two‐day International Workshop on Advanced Robotics and Intelligent Machines held at the University of Salford. Subjects…
Abstract
Reports on the industrial robots papers presented at the two‐day International Workshop on Advanced Robotics and Intelligent Machines held at the University of Salford. Subjects included: development of robotics in the UK; work on a generalized framework for intelligent robotic systems to analyse the solution of a co‐operative foraging problem; research on developing a Cartesian simulator for rational agents; a neuro‐force controller for robotic contact with non‐rigid environments; development of a new control system architecture; and an intelligent robot equipped with multiple sensors enabling response to a disordered environment.
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Mechiel van Manen, Léon olde Scholtenhuis and Hans Voordijk
This study aims to empirically validate five propositions about the benefits of three-dimensional (3D) visualizations for the management of subsurface utility projects…
Abstract
Purpose
This study aims to empirically validate five propositions about the benefits of three-dimensional (3D) visualizations for the management of subsurface utility projects. Specifically, the authors validate whether benefits from 3D in the literature of building construction project management also apply to subsurface utility projects and map them using a taxonomy of project complexity levels.
Design/methodology/approach
A multiple case study of three utility construction projects was carried out during which the first author was involved in the daily work practices at a utility contractor. 3D visualizations of existing project models were developed, and design and construction meetings were conducted. Practitioners' interactions with and reflections on these 3D visualizations were noted. Observational data from the three project types were matched with the five propositions to determine where benefits of 3D visualizations manifested themselves.
Findings
Practitioners found that 3D visualizations had most merit in crowded urban environments when constructing rigid pipelines. All propositions were validated and evaluated as beneficial in subsurface utility projects of complexity level C3. It is shown that in urban projects with rigid pipelines (project with the highest complexity level), 3D visualization prevents misunderstanding or misinterpretations and increases efficiency of coordination. It is recommended to implement 3D visualization approaches in such complex projects
Originality/value
There is only limited evidence on the value 3D visualizations in managing utility projects. This study contributes rich empirical evidence on this value based on a six-month observation period at a subsurface contractor. Their merit was assessed by associating 3D approaches with project complexity levels, which may help utility contractors in strategically implementing 3D applications.
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Hongwang Du, Wei Xiong, Haitao Wang and Zuwen Wang
Cables are widely used, and they play a key role in complex electromechanical products such as vehicles, ships, aircraft and satellites. Cable design and assembly significantly…
Abstract
Purpose
Cables are widely used, and they play a key role in complex electromechanical products such as vehicles, ships, aircraft and satellites. Cable design and assembly significantly impact the development cycle and assembly quality, which is be-coming a key element affecting the function of a product. However, there are various kinds of cables, with complex geo-metric configurations and a narrow assembly space, which can easily result in improper or missed assembly, an unreasonable layout or interference. Traditional serial design methods are inefficient and costly, and they cannot predict problems in installation and use. Based on physical modeling, computer-aided cable design and assembly can effectively solve these problems. This paper aims to address virtual assembly (VA) of flexible cables based on physical modeling.
Design/methodology/approach
Much research has focused recently on virtual design and assembly-process planning for cables. This paper systematically reviews the research progress and the current state of mechanical models, virtual design, assembly-process planning, collision detection and geometric configuration and proposes areas for further research.
Findings
In the first instance, the main research groups and typical systems are investigated, followed by extensive exploration of the major research issues. The latter can be reviewed from five perspectives: the current state of mechanical models, virtual design, assembly-process planning, collision detection and geometric configuration. Finally, the barriers that prevent successful application of VA are also discussed, and the future research directions are summarized.
Originality/value
This paper presents a comprehensive survey of the topics of VA of flexible cables based on physical modeling and investigates some new ideas and recent advances in the area.
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This paper aims to focus on the use of qualitative research methods to gain a better understanding of the performance management system (PMS) of one of the largest retailers in…
Abstract
Purpose
This paper aims to focus on the use of qualitative research methods to gain a better understanding of the performance management system (PMS) of one of the largest retailers in North America. The motivation for the research was to assess whether the PMS at one of the world’s largest retail companies was congruent with the most recent thinking and research in the management accounting literature.
Design/methodology/approach
Using open-ended interviews, the paper seeks to develop relevant hypotheses emerging from the dimensions of the Strauss and Corbin’s qualitative research methodology (1998). A qualitative methodology was used because it provides a structured approach and analytical techniques that can build upon existing theory and literature.
Findings
The qualitative evidence collected during the course of the research indicates that financial measures were predominantly used by the company in its PMS, and that this reliance on financial measures may be an artifact of the industry in which the company operates. The retail industry is highly competitive, and it is very sensitive to changes in customer tastes and behavior, as well as shareholder and financial market pressures. In addition to financial measures, it was found that operational management developed certain non-financial performance measures and that this development may have been a response by operational managers to wider stakeholder pressures and external influences. However, these performance measures appear to be not fully integrated in the PMS and are therefore de-coupled and relatively unimportant in, or entirely absent from, top-level decision-making.
Research limitations and implications
The conclusions of the paper provide support for the concepts of isomorphism and de-coupling as found in the literature of new institutional theory.
Originality/value
The case study approach has enabled to explore and gain further understanding of management accounting practices, particularly performance measurement and management, in their natural setting. Strauss and Corbin’s (1998) grounded theory methodology was adopted because it provides a structured set of analytical steps and systematic analytical techniques for handling and interpreting data and theory building.
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