Search results

1 – 10 of over 24000
Article
Publication date: 26 July 2013

Lena Hallin‐Pihlatie, Jaana Rintala and Henning Sten Hansen

The objective of this paper is to describe an easily understandable integrated modelling framework for analysing the combined effects of changes in land‐use and climate on the…

Abstract

Purpose

The objective of this paper is to describe an easily understandable integrated modelling framework for analysing the combined effects of changes in land‐use and climate on the leaching of phosphorus using regional IPCC‐based land‐use and climate scenarios. In addition, the paper reflects on the added value of a geospatial data‐based modelling approach from a river basin management perspective.

Design/methodology/approach

Regional land‐use scenarios were simulated for the whole official river basin planning unit of the Oulujoki‐Iijoki River Basin District using a land‐use simulation model. The nutrient leaching modelling on phosphorus was carried out in another raster‐based freeware for a smaller sub‐basin, Temmesjoki river basin.

Findings

Regional land use scenarios could be simulated taking into account the local conditions, such as the vicinity to water, and development options in agriculture on regional scale. The magnitude and leaching pattern of phosphorus in the future is related to the overall share of agricultural land on drainage basin level. The authors’ results also indicate that the local spatial structure of built‐up and agricultural areas may play a central role in nutrient leaching assessment. If the spatial structure is of importance, this may have further implications for the environmental planners working with river basin management.

Originality/value

This research takes a step further in bringing the global scenario framework to the local and practical level for various practical purposes in river basin management. The research provides an approach to spatially identify the possible impact of changes in land‐use and in climatic conditions on nutrient leaching.

Details

International Journal of Climate Change Strategies and Management, vol. 5 no. 3
Type: Research Article
ISSN: 1756-8692

Keywords

Article
Publication date: 29 May 2020

Wu Qin, Hui Yin, D.J. Yu and Wen-Bin Shangguan

This paper aims to develop an efficient numerical method for mid-frequency analysis of built-up structures with large convex uncertainties.

Abstract

Purpose

This paper aims to develop an efficient numerical method for mid-frequency analysis of built-up structures with large convex uncertainties.

Design/methodology/approach

Based on the Chebyshev polynomial approximation technique, a Chebyshev convex method (CCM) combined with the hybrid finite element/statistical energy analysis (FE-SEA) framework is proposed to fulfil the purpose. In CCM, the Chebyshev polynomials for approximating the response functions of built-up structures are constructed over the uncertain domain by using the marginal intervals of convex parameters; the bounds of the response functions are calculated by applying the convex Monte–Carlo simulation to the approximate functions. A relative improvement method is introduced to evaluate the truncated order of CCM.

Findings

CCM has an advantage in accuracy over CPM when the considered order is the same. Furthermore, it is readily to consider the CCM with the higher order terms of the Chebyshev polynomials for handling the larger convex parametric uncertainty, and the truncated order can be effectively evaluated by the relative improvement method.

Originality/value

The proposed CCM combined with FE-SEA is the first endeavor to efficiently handling large convex uncertainty in mid-frequency vibro-acoustic analysis of built-up structures. It also has the potential to serve as a powerful tool for other kinds of system analysis when large convex uncertainty is involved.

Details

Engineering Computations, vol. 37 no. 9
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 1 June 1930

THE ZMC‐2 hull is 149 ft. 5 in. long from bow to stern, and 52 ft. 8 in. in maximum diameter. Its covering consists of 0•0095 in. thin Alclad alloy sheets sewn together by the…

Abstract

THE ZMC‐2 hull is 149 ft. 5 in. long from bow to stern, and 52 ft. 8 in. in maximum diameter. Its covering consists of 0•0095 in. thin Alclad alloy sheets sewn together by the Aircraft Development Corporation riveting machine. Each of the rings of sheet metal composing the hull surface has the shape of the frustum of a cone; together the cones closely approximate the curvature of the hull. There are 142 such conical surfaces from bow to stern.

Details

Aircraft Engineering and Aerospace Technology, vol. 2 no. 6
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 March 1938

Aircraft structures are built up of previously constructed members comprising a skin part and stress‐carrying structure, the structures being completed by interattaching the…

Abstract

Aircraft structures are built up of previously constructed members comprising a skin part and stress‐carrying structure, the structures being completed by interattaching the members in a surface containing the neutral axis of the completed structure. In one form, a wing is built up of components comprising spar parts 1A, 3A, ribs 4A, 4, 4B, and metal skin 5. The appropriate spars are butt‐jointed together and the structure is completed by a nose fairing 8 which may be secured by wire pins 9. A tank 10 may be housed in the wing. In a modification, the skin is supported by a corrugated sheet attached to a capping strip secured to brackets which are connected to the lap‐jointed spars. In a further modification, the spar is formed by securing flange portions, which may be built up of laminations, to a lightened web. A wing flap may be hinged to the trailing edge of the wing. A fuselage may similarly be built up of components 71, 72 butt jointed as at 73. In a modification of this form, a bomb 88 may be housed in the fuselage, hinged doors 89 being provided. A tapering fuselage may be built from blanks of different dimensions pressed to shape by a single set of tools. The fuselage may be built up of quadrantal portions, and decks and floorings may be incorporated in the stiffening members. A seaplane float may be constructed in a similar manner.

Details

Aircraft Engineering and Aerospace Technology, vol. 10 no. 3
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 13 November 2007

Maike Andresen

The purpose of this paper is to present knowledge as an important diversity dimension in globally operating companies and to illustrate how companies with corporate universities…

4996

Abstract

Purpose

The purpose of this paper is to present knowledge as an important diversity dimension in globally operating companies and to illustrate how companies with corporate universities (CUs) proceed in order to achieve knowledge inclusion.

Design/methodology/approach

A model is developed regarding the management of knowledge diversity methodologically based on the grounded theory approach and examples in existing CUs are given.

Findings

Different diversity learning approaches in corporate university programmes are explained and integrated in a model. The paper recognises the need to more actively manage knowledge diversity in companies.

Practical implications

The paper gives advice to companies on how to better manage their diversity of knowledge and knowledge bearers for strategic learning purposes. The paper is a first step in the academic discussion of knowledge as a diversity dimension.

Originality/value

Knowledge is defined as a diversity dimension by scientists but has not been discussed in depth so far. The paper distinguishes between knowledge diversity and inclusion and shows in which way companies can proceed in order to profit from the diversity in learning environments.

Details

Equal Opportunities International, vol. 26 no. 8
Type: Research Article
ISSN: 0261-0159

Keywords

Article
Publication date: 21 June 2013

Wolfgang Weber, Uwe Reuter and Bernd W. Zastrau

The purpose of this paper is to analyze the wave scattering behaviour of an inhomogeneous and eccentric inclusion in a homogeneous matrix material. Another purpose is to evaluate…

Abstract

Purpose

The purpose of this paper is to analyze the wave scattering behaviour of an inhomogeneous and eccentric inclusion in a homogeneous matrix material. Another purpose is to evaluate the influence of epistemic uncertainty on the wave scattering behaviour, particularly on the lack of knowledge about this eccentricity. This task calls for a multidisciplinary model.

Design/methodology/approach

The inclusion is modelled as a multi‐layered obstacle, with all layers being eccentric with respect to each other. The material behaviour of the embedding matrix is linear elastic and isotropic. In a multidisciplinary approach, the interaction of the inhomogeneous inclusion and the embedding matrix with respect to an incoming shear wave of arbitrary shape is solved analytically. The purely analytical solution process takes place in the frequency‐domain. Due to the lack of knowledge about the eccentric configuration of the matrix inclusion and its influence on the total wave field inside the matrix material, the mechanical model is coupled with fuzzy set theory for modelling this non‐stochastic uncertainty.

Findings

An analytical model for describing the wave scattering behaviour of an elastic matrix inclusion with eccentric set‐up is found and intimately connected with the framework of fuzzy set theory. Hence it is shown that the treatment of epistemic uncertainty with the derived analytical model is possible and fruitful. Additionally, it is shown that eccentric configurations lead to highly increased amplitudes with respect to the reference case of a concentric or even homogenous set‐up of the inclusion.

Originality/value

The value of this contribution is in the analytical model, which allows one to predict the wave scattering behaviour of eccentric configurations of multi‐layered fibres including the surrounding interphase, and its coupling with fuzzy set theory to cope with the epistemic uncertainty inherent in the geometric set‐up of the matrix inclusion.

Details

Multidiscipline Modeling in Materials and Structures, vol. 9 no. 1
Type: Research Article
ISSN: 1573-6105

Keywords

Book part
Publication date: 8 April 2005

Fredrik von Corswant

This paper deals with the organizing of interactive product development. Developing products in interaction between firms may provide benefits in terms of specialization…

Abstract

This paper deals with the organizing of interactive product development. Developing products in interaction between firms may provide benefits in terms of specialization, increased innovation, and possibilities to perform development activities in parallel. However, the differentiation of product development among a number of firms also implies that various dependencies need to be dealt with across firm boundaries. How dependencies may be dealt with across firms is related to how product development is organized. The purpose of the paper is to explore dependencies and how interactive product development may be organized with regard to these dependencies.

The analytical framework is based on the industrial network approach, and deals with the development of products in terms of adaptation and combination of heterogeneous resources. There are dependencies between resources, that is, they are embedded, implying that no resource can be developed in isolation. The characteristics of and dependencies related to four main categories of resources (products, production facilities, business units and business relationships) provide a basis for analyzing the organizing of interactive product development.

Three in-depth case studies are used to explore the organizing of interactive product development with regard to dependencies. The first two cases are based on the development of the electrical system and the seats for Volvo’s large car platform (P2), performed in interaction with Delphi and Lear respectively. The third case is based on the interaction between Scania and Dayco/DFC Tech for the development of various pipes and hoses for a new truck model.

The analysis is focused on what different dependencies the firms considered and dealt with, and how product development was organized with regard to these dependencies. It is concluded that there is a complex and dynamic pattern of dependencies that reaches far beyond the developed product as well as beyond individual business units. To deal with these dependencies, development may be organized in teams where several business units are represented. This enables interaction between different business units’ resource collections, which is important for resource adaptation as well as for innovation. The delimiting and relating functions of the team boundary are elaborated upon and it is argued that also teams may be regarded as actors. It is also concluded that a modular product structure may entail a modular organization with regard to the teams, though, interaction between business units and teams is needed. A strong connection between the technical structure and the organizational structure is identified and it is concluded that policies regarding the technical structure (e.g. concerning “carry-over”) cannot be separated from the management of the organizational structure (e.g. the supplier structure). The organizing of product development is in itself a complex and dynamic task that needs to be subject to interaction between business units.

Details

Managing Product Innovation
Type: Book
ISBN: 978-1-84950-311-2

Book part
Publication date: 24 August 2011

Tommy Tsung Ying Shih

Researchers continue to seek understanding of industrialization as a state managed process. How to create and implement new industries based on advanced knowledge is on the policy…

Abstract

Researchers continue to seek understanding of industrialization as a state managed process. How to create and implement new industries based on advanced knowledge is on the policy agenda of many advanced nations. Measures that promote these developments include national capacity building in science and technology, the formation of technology transfer systems, and the establishment of industrial clusters. What these templates often overlook is an analysis of use. This chapter aims to increase the understanding of the processes that embed new solutions in structures from an industrial network perspective. The chapter describes an empirical study of high-technology industrialization in Taiwan that the researcher conducts to this end. The study shows that the Taiwanese industrial model is oversimplified and omits several important factors in the development of new industries. This study bases its findings on the notions that resource combination occurs in different time and space, the new always builds on existing resource structures, and the users are important as active participants in development processes.

Details

Interfirm Networks: Theory, Strategy, and Behavior
Type: Book
ISBN: 978-1-78052-024-7

Keywords

Open Access
Article
Publication date: 2 August 2019

Maria de Lourdes Miranda-Medina, Christian Tomastik, Tia Truglas, Heiko Groiss and Martin Jech

The purpose of this paper is to provide a general picture for describing the formed tribofilm, including chemical and physical aspects in the micro-scale and the nano-scale. In a…

1187

Abstract

Purpose

The purpose of this paper is to provide a general picture for describing the formed tribofilm, including chemical and physical aspects in the micro-scale and the nano-scale. In a previous study, the durability of zinc dialkyl dithiophosphate (ZDDP) tribofilms on cylinder liner samples has been investigated in a tribometer model system by using fresh and aged fully formulated oils and replacing them with PAO8 without additives. Analyses of the derived tribofilms by means of X-ray photoelectron spectroscopy and scanning electron microscopy could give some hints about the underlying mechanisms of the tribofilm build-up and wear performance, but a final model has not been achieved.

Design/methodology/approach

Thus, characterisation of these tribofilms by means of focused ion beam-transmission electron microscopy (FIB-TEM) and energy dispersive X-ray spectroscopy is presented and a concluding model of the underlying mechanisms of tribofilm build-up is discussed in this paper.

Findings

For tribotests running first with fresh fully formulated engine oil, a rather homogeneous ZDDP-like tribofilm is found underneath a carbon rich tribofilm after changing to non-additivated PAO8. However, when the tests run first with aged fully formulated engine oil, no ZDDP-like tribofilm has been found after changing to non-additivated PAO8, but a wear protective carbon rich tribofilm.

Originality/value

The obtained results provide insights into the structure and durability of tribofilms. Carbon-based tribofilms are built up on the basis of non-additivated PAO8 because of the previously present ZDDP tribofilms, which suggests an alternative way to reducing the consumption of antiwear additives.

Details

Industrial Lubrication and Tribology, vol. 72 no. 4
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 5 April 2012

Adli Abouzeedan and Thomas Hedner

The impact of the e-globalization combined with staggering costs for R & D across industries has resulted in the call for new approach to innovation where openness and…

4138

Abstract

Purpose

The impact of the e-globalization combined with staggering costs for R & D across industries has resulted in the call for new approach to innovation where openness and interconnectivity is the role. This new approach is designated as “open innovation”. The new paradigm calls for the sharing of knowledge and resources in conducting innovation activities within and among organizations. As such, one needs to re-orient the structure of the organization to meet these new requirements. On the conceptual level, it becomes a significant undertake to try to grasp how our traditional understanding of the organization can be fitted within the requirements of the open innovation when the environment of the e-globalization is taken in consideration. The purpose of this paper is to discuss the question of how organization structure theories can be coupled to the open innovation paradigm. Out of that analysis the authors propose a new theoretical framework of organizational analysis that takes both the classical knowledge and the new economic context of e-globalization.

Design/methodology/approach

The contemporary period is recognized by the term “new economy”, as a replacement for the “old economy”. Another term of importance is “globalization”, which is coupled to the issue of economy categorization. Humanity launched the modern age of globalization some decades ago, but we are going through a new type of globalization, e-globalization. In the e-globalization, processes are induced basically by the impact of the new tools of communication and information technologies. These dynamic processes have forced a re-thinking of the traditional innovation practices. In the paper, the authors reflect on the changes in relation to the traditional knowledge about organization structure, using a deductive approach and textual analysis and relate that to the requirements of an open innovation paradigm. In the process, the authors introduce the basics of the “theory of internetisation dynamics” as a new potential organizational theoretical framework.

Findings

From the analysis, it was found that some traditional concepts about organization structure and organizing mechanism theories are responsive to the needs of the open paradigm settings while other theories are not. However, each of these is able to contribute to one of the five components of the theory of internetisation dynamics.

Originality/value

The authors argue that by using the correct framework for the analysis of the organizational structure, one can propose a set of strategic steps which would help the companies to re-structure. That would save time and effort for policy-makers and managers of firms, as well as researchers active in this field of organization and organizing processes, who are focused on the open innovation transformation requirements of the firms. Running this analysis would add some input into organizational re-orientation in troubled sectors such as in pharmaceutical industries.

Details

World Journal of Science, Technology and Sustainable Development, vol. 9 no. 1
Type: Research Article
ISSN: 2042-5945

Keywords

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