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Article
Publication date: 11 October 2011

Zhenggang Zhu and Michael Kaliske

The purpose of this paper is to present a numerical model of coupled heat, moisture transfer and their effects on the mechanical deformations of wood during the drying process.

Abstract

Purpose

The purpose of this paper is to present a numerical model of coupled heat, moisture transfer and their effects on the mechanical deformations of wood during the drying process.

Design/methodology/approach

Coupling among heat, moisture, and mechanical deformations is solved consecutively by use of sparse solver of MATLAB. The weighted residual of the equilibrium equations of drying process of wood, based on finite element method, is investigated. The stress and plastic strain increments can be solved with Newton's method.

Findings

The numerical model is applied to a plain strain problem of a long wood board taken from the outer region of the wood log. Numerical simulation reveals the stress reversal during the drying process. The mechanical deformations and the principle stresses of a three‐dimensional wood board in consideration of the orthotropic properties are presented.

Originality/value

Plane strain and plane stress are analysed. The tangential modulus is derived. The transformation of the stress and strain tensors between the local coordinate system resulting from the cylindrical properties of wood and the global one is evaluated. Selection of element type for temperature, moisture content and displacement is discussed.

Details

Engineering Computations, vol. 28 no. 7
Type: Research Article
ISSN: 0264-4401

Keywords

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Article
Publication date: 13 September 2011

Antti Nurmi, Petri Hallikainen and Matti Rossi

In large system development efforts organizational and managerial issues are often more challenging than technical ones. One of the key concerns of managers is the control…

Abstract

Purpose

In large system development efforts organizational and managerial issues are often more challenging than technical ones. One of the key concerns of managers is the control and evaluation of the overall development effort. The purpose of this paper was to analyze the evaluation of system development process in a setting where there are multiple stakeholders in multiple organizations that develop a common information system (IS). The case is a consortium of universities that has developed a common student registrar system over a period of more than ten years.

Design/methodology/approach

The authors used a social process model to analyze the episodes and encounters in the system development and evaluation process. The research approach can be characterized as action case.

Findings

The authors found that in the early stages of system development the evaluation was emergent or even non‐existent. As the system was developed further and issues, such as delays and missing features, arose, there was a need for better control of the process. Thus, the evaluation process evolved through a series of critical encounters into a more proactive one.

Research limitations/implications

The authors studied only one case so broad generalizations directly from the case cannot be made. However, the results could hold true for similar settings. The authors believe that the results are interesting to both researchers and practitioners since in outsourcing relationships the consortium kind of arrangement is becoming more common.

Originality/value

The authors analyze the evolution of IS evaluation processes in a setting with multiple client and vendor organizations and reveal the complexities of system evaluation in such settings. Moreover, they introduce three new concepts: reactive, transitional and proactive evaluation processes. These concepts can help researchers and practitioners to better understand the nature of the IS evaluation processes and to possibly choose an evaluation approach that has a better “fit” with the development situation at hand.

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Article
Publication date: 28 June 2011

Kongkiti Phusavat, Narongsak Comepa, Agnieszka Sitko‐Lutek and Keng‐Boon Ooi

The aim of this paper is to raise an awareness of intangible assets among large manufacturing firms in Thailand. As a result, the research is to examine empirically the…

Abstract

Purpose

The aim of this paper is to raise an awareness of intangible assets among large manufacturing firms in Thailand. As a result, the research is to examine empirically the effects of intellectual capital (IC), and its key components (e.g. human capital, structural capital, and innovation capital) on a manufacturing firm's industrial operations and performance.

Design/methodology/approach

The required data for this research are collected from leading manufacturing firms' annual reports. These firms are listed in stock exchange of Thailand 100. The value added intellectual coefficient (VAIC) is adapted to measure IC. Then, the co‐relation analysis and multi‐regression model are applied to learn more about the roles of VAIC and its impacts on a manufacturing firm's performance.

Findings

IC positively and significantly affects a manufacturing firm's performance. It impacts all four performance indicators under study, i.e. return on equity, return on assets, revenue growth, and employee productivity. In addition, based on the relatively high adjusted R2, human capital exhibits the relationships with employee productivity.

Originality/value

The findings highlight the role of IC in strengthening a manufacturing firm's long‐term competitiveness advantage. The results from the paper have helped develop policy initiatives for Department of Industrial Work in Thailand such as tax scheme and incentives for R&D spending, promotion of university partnerships for R&D, and training for more effective knowledge management practices.

Details

Industrial Management & Data Systems, vol. 111 no. 6
Type: Research Article
ISSN: 0263-5577

Keywords

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Article
Publication date: 1 April 2003

Antti Tuomela

Centralised workplace and decentralised facilities management organisations combine several interacting functions. The purpose of this paper is to examine the workplace…

Abstract

Centralised workplace and decentralised facilities management organisations combine several interacting functions. The purpose of this paper is to examine the workplace service environment from a ‘network organisation’ perspective comprising workplace knowledge‐holder roles that have both formal and informal connections. This paper proposes that the core business customers, in‐house and outsourced service providers, and the contract managers have a similar need to interact and learn from each other and presents a framework for ‘network service organisations’ to describe their changing collaborative roles. First, the customer interfaces of workplace networks are identified. Secondly, a theoretical framework for a network service organisation is presented, followed by a section on creating centres of excellence for workplace knowledge. Thirdly, a generic governance model for network collaboration is introduced. The aim of the paper is to increase knowledge about understanding and managing network relations in the new workplace environment. The paper ends with a discussion on limitations to formal cooperation and the need for further research on informal relationships within these networks.

Details

Journal of Facilities Management, vol. 2 no. 2
Type: Research Article
ISSN: 1472-5967

Keywords

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Article
Publication date: 26 July 2011

Mohamad Saraee, Seyed Vahid Moosavi and Shabnam Rezapour

This paper aims to present a practical application of Self Organizing Map (SOM) and decision tree algorithms to model a multi‐response machining process and to provide a…

Abstract

Purpose

This paper aims to present a practical application of Self Organizing Map (SOM) and decision tree algorithms to model a multi‐response machining process and to provide a set of control rules for this process.

Design/methodology/approach

SOM is a powerful artificial neural network approach used for analyzing and visualizing high‐dimensional data. Wire electrical discharge machining (WEDM) process is a complex and expensive machining process, in which there are a lot of factors having effects on the outputs of the process. In this work, after collecting a dataset based on a series of designed experiments, the paper applied SOM to this dataset in order to analyse the underlying relations between input and output variables as well as interactions between input variables. The results are compared with the results obtained from decision tree algorithm.

Findings

Based on the analysis of the results obtained, the paper extracted interrelationships between variables as well as a set of control rules for prediction of the process outputs. The results of the new experiments based on these rules, clearly demonstrate that the paper's predictions are valid, interesting and useful.

Originality/value

To the best of the authors' knowledge, this is the first time SOM and decision tree has been applied to the WEDM process successfully.

Details

Journal of Manufacturing Technology Management, vol. 22 no. 6
Type: Research Article
ISSN: 1741-038X

Keywords

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Abstract

Purpose

This paper aims to analyse the surface evolution of pure recycled titanium subjected to isothermal and cyclic oxidation conditions using dry air as oxidant gas. It is important to mention that the cyclic oxidation behaviour of pure titanium is a process that has been barely studied.

Design/methodology/approach

An isothermal and cyclic oxidation reactor was built for these purposes. This installation allows the oxidation of material under the action of any atmosphere and for temperatures up to 1,200°C. For this study, the oxidation behaviour of the material was studied at 850°C and 950°C.

Findings

Oxide growth under isothermal oxidation conditions in air follows a parabolic behaviour with an activation energy of 118 kJ/mol, and the oxide phase formed on the surface of the metal was rutile. The cyclic oxidation of the material indicates that oxide is spalled from the surface following linear behaviours; this phenomenon is controlled by the thermal stresses experienced by the samples during heating and cooling cycles.

Originality/value

The material is obtained from the production of electrolytic copper, and during its reprocessing practices at high temperature, it was thought that it could experience some abnormal oxidation. In addition, given that pure titanium is currently used for biomedical application, some surface degree can be given by means of oxidation and subsequent spallation process situation that is found during the cyclic oxidation experiments, which could be a low-cost method to engineer a surface for these purposes.

Details

Anti-Corrosion Methods and Materials, vol. 65 no. 4
Type: Research Article
ISSN: 0003-5599

Keywords

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Article
Publication date: 3 October 2016

Antti Tapio Kurvinen and Jaakko Vihola

Even as multi-story apartment building development proposals in existing neighbourhoods represent a substantial component of policy debate at local planning boards, there…

Abstract

Purpose

Even as multi-story apartment building development proposals in existing neighbourhoods represent a substantial component of policy debate at local planning boards, there is limited evidence for the impact of such residential developments on surrounding apartment values. This paper aims to address the void in knowledge, and the impact of multi-story apartment building developments on apartment values in residential high-rise areas located outside city and district centres is investigated in Helsinki Metropolitan Area, Finland.

Design/methodology/approach

Whether a multi-story apartment building development is followed by an increase in housing values depends on both positive and negative externalities. To specify valuation effects of proximate development projects, advanced research design combining matched sample methodology and hedonic-based difference-in-difference approach is used.

Findings

It appears from the analysis that completion of a single multi-story apartment building has an immediate positive impact on apartment values within 300 metre radius, while there is no statistically significant impact on price trend.

Research limitations/implications

This paper studies apartment values only in Helsinki Metropolitan Area, Finland, and it is important to notice that local regulations and market conditions may have a notable impact on the outcomes.

Originality/value

This study is the first of its kind to provide with statistically significant evidence for positive impacts from multi-story apartment building development in Finnish residential high-rise areas and may have a crucial role in helping to dispel prejudices related to such developments.

Details

International Journal of Housing Markets and Analysis, vol. 9 no. 4
Type: Research Article
ISSN: 1753-8270

Keywords

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Article
Publication date: 19 July 2018

Takao Kato and Antti Kauhanen

The purpose of this paper is to provide novel and rigorous evidence on the productivity effect of varying attributes of performance-related pay (PRP) and shows that the…

Abstract

Purpose

The purpose of this paper is to provide novel and rigorous evidence on the productivity effect of varying attributes of performance-related pay (PRP) and shows that the details of PRP indeed matter.

Design/methodology/approach

In doing so, the authors exploit the panel nature of the Finnish Linked Employer–Employee Data on the details of PRP.

Findings

The authors first establish that the omitted variable bias is serious, which makes the cross-sectional estimates on the productivity effect of the details of PRP biased upward substantially. Relying on the fixed effect estimates that account for such bias, the authors find: (first, group incentive PRP is more potent in boosting enterprise productivity than individual incentive PRP; second, group incentive PRP with profitability as a performance measure is especially powerful in raising firm productivity; third, when a narrow measure (such as cost reduction) is already used, adding another narrow measure (such as quality improvement) yields no additional productivity gain; and fourth, PRP with greater power of incentives (the share of PRP in total compensation) results in greater productivity gains, and returns to power of incentives diminishes very slowly.

Originality/value

Much of the empirical literature on PRP focuses on a question of whether the firm can increase firm performance in general and enterprise productivity in particular by introducing PRP and if so, how much. However, not all PRP programs are created equal and PRP programs vary significantly in a variety of attributes. This paper provides novel and rigorous evidence on the productivity effect of varying attributes of PRP and shows that the details of PRP indeed matter.

Details

Journal of Participation and Employee Ownership, vol. 1 no. 1
Type: Research Article
ISSN: 2514-7641

Keywords

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Article
Publication date: 27 June 2019

Antti Klemola

The purpose of this paper is to propose a novel and new direct measurement of small investor sentiment in the equity market. The sentiment is based on the individual…

Abstract

Purpose

The purpose of this paper is to propose a novel and new direct measurement of small investor sentiment in the equity market. The sentiment is based on the individual investors’ internet search activity.

Design/methodology/approach

The author measures unexpected changes in the small investor sentiment with AR (1) process, where the residuals capture the unexpected changes in small investor sentiment. The author employs vector autoregressive, Granger causality and linear regression models to estimate the association between the unexpected changes in small investor sentiment and future equity market returns.

Findings

An unexpected increase in the search popularity of the term bear market is negatively associated with the following week’s equity market returns. An unexpected increase in the spread (the difference in popularities between a bull market and a bear market) is positively associated with the following week’s equity market returns. The author finds that these effects are stronger for small-sized companies.

Originality/value

By author’s knowledge, the paper is the first that measures the small investor sentiment that is based on the internet search activity for keywords used in the American Association of Individual Investor’s (AAII) survey questions. The paper proposes an alternative small investor sentiment measure that captures the changes in small investor sentiment in more timely fashion than the AAII survey.

Details

Review of Behavioral Finance, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1940-5979

Keywords

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Article
Publication date: 1 February 1993

Vinod Chachra, Gail Gulbenkian, Elaine Hartman, Sandeep Somaiya, Antti Soini, Bil Stahl and Claudia V. Weston

Today, VTLS is a comprehensive, integrated solution to the automation requirements of academic, public, and special libraries around the world. No two libraries are alike;…

Abstract

Today, VTLS is a comprehensive, integrated solution to the automation requirements of academic, public, and special libraries around the world. No two libraries are alike; no two regions are alike. VTLS recognizes these differences and offers libraries the flexibility of numerous options to configure the system that best meets their functional and financial needs.

Details

Library Hi Tech, vol. 11 no. 2
Type: Research Article
ISSN: 0737-8831

1 – 10 of 210