bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modelling of surface tension force for free surface flows in ISPH method
Authors: Aly Abdelraheem M. , Asai Mitsuteru , Sonda Yoshimi 
Published: April 2013

PurposeThe purpose of this paper is to show how a surface tension model and an eddy viscosity based on the Smagorinsky sub‐grid scale model, which belongs to the Large‐Eddy Simulation (LES) theory for turbulent flow, have been introduced into ISPH (Incompressible smoothed particle hydrodynamics) method. In addition, a small modification in the source term of pressure Poisson equation has been introduced as a stabilizer for robust simulations. This stabilization generates a smoothed pressure distribution and keeps the total volume of fluid, and it is analogous to the recent modification in MPS.Design/methodology/approachThe surface tension force in free surface flow is evaluated without a direct modeling of surrounding air for decreasing computational costs. The proposed model was validated by calculating the surface tension force in the free surface interface for a cubic‐droplet under null‐gravity and the milk crown problem with different resolution models. Finally, effects of the eddy viscosity have been discussed with a fluid‐fluid interaction simulation.FindingsFrom the numerical tests, the surface tension model can handle free surface tension problems including high curvature without special treatments. The eddy viscosity has clear effects in adjusting the splashes and reduces the deformation of free surface in the interaction. Finally, the proposed stabilization appeared in the source term of pressure Poisson equation has an important role in the simulation to keep the total volume of fluid.Originality/valueAn incompressible smoothed particle hydrodynamics is developed to simulate milk crown problem using a surface tension model and the eddy viscosity.
Application of variational iteration method to nonlinear heat transfer equations using He's polynomials
Authors: Matinfar M. , Ghasemi M. 
Published: April 2013

PurposeThe purpose of this paper is to solve an unsteady nonlinear convective‐radiative equation and a nonlinear convective‐radiative‐conduction equation containing two small parameters of ε1 and ε2 by variational homotopy perturbation method.Design/methodology/approachThe heat transfer equations are described. The variational homotopy perturbation method as a powerful method for solving linear and nonlinear equations is applied to find the solutions of our model equations.FindingsThe solutions of heat transfer equations are calculated in the form of convergent series with easily computable components. Two examples are solved as illustrations, using symbolic computation.Originality/valueThe results show that the suggested method is easy to implement and has high level of accuracy. The method introduces a reliable tool for solving many linear and nonlinear differential equations.
True and hollow forgiveness, forgiveness motives, and conflict resolution
Authors: Takada Naomi , Ohbuchi Ken‐ichi 
Published: April 2013

PurposeThe main aim of this study is to explore the motivational process behind two types of forgiveness – i.e. true and hollow forgiveness. It is predicted that victims who engage in true forgiving behavior will have stronger relationship‐oriented motives than either those who engage in hollow forgiving behavior or those who do not engage in forgiving behavior. Furthermore, the authors seek to explore the relationship between true and hollow forgiveness and conflict resolution strategy.Design/methodology/approachIn Study 1, participants were asked to recall personal experiences of being harmed, and they rated the events in terms of forgiveness, motives of forgiveness, resolutions strategies, and satisfaction with outcome. In Study 2, participants were presented with scenarios depicting individuals who were victimized, and were asked to read the scenarios, imagining themselves as the victim. Following this forgiveness, motives of forgiveness, resolution strategies, and satisfaction with outcome were measured.FindingsConsistent with the predictions, participants classified as being true forgivers were motivated by relationship‐oriented motives. These individuals preferred a collaborative conflict resolution strategy, and tended to be satisfied with the outcome of the conflict. In contrast, participants classified as being hollow forgivers were motivated by self‐oriented reasons, and they preferred avoidance as a conflict resolution strategy. In addition, these individuals were less satisfied with the outcome of the conflict than were the true forgivers.Originality/valueThese findings suggest that perceptions of the conflict resolution process depend on the type of forgiveness.
Digital material fabrication using mask‐image‐projection‐based stereolithography
Authors: Zhou Chi , Chen Yong , Yang Zhigang , Khoshnevis Behrokh 
Published: April 2013

PurposeThe purpose of this paper is to present a mask‐image‐projection‐based stereolithography (MIP‐SL) process that can combine two base materials with various concentrations and structures to produce a solid object with desired material characteristics. Stereolithography is an additive manufacturing process in which liquid photopolymer resin is cross‐linked and converted to solid. The fabrication of digital material requires frequent resin changes during the building process. The process presented in this paper attempts to address the related challenges in achieving such fabrication capability.Design/methodology/approachA two‐channel system design is presented for the multi‐material MIP‐SL process. In such a design, a coated thick film and linear motions in two axes are used to reduce the separation force of a cured layer. The material cleaning approach to thoroughly remove resin residue on built surfaces is presented for the developed process. Based on a developed testbed, experimental studies were conducted to verify the effectiveness of the presented process on digital material fabrication.FindingsThe proposed two‐channel system can reduce the separation force of a cured layer by an order of magnitude in the bottom‐up projection system. The developed two‐stage cleaning approach can effectively remove resin residue on built surfaces. Several multi‐material designs have been fabricated to highlight the capability of the developed MIP‐SL process.Research limitations/implicationsA proof‐of‐concept testbed has been developed. Its building speed and accuracy can be further improved. The tests were limited to the same type of liquid resins. In addition, the removal of trapped air is a challenge in the presented process.Originality/valueThis paper presents a novel and a pioneering approach towards digital material fabrication based on the stereolithography process. This research contributes to the additive manufacturing development by significantly expanding the selection of base materials in fabricating solid objects with desired material characteristics.
Imperfect symmetry transform for orbital prosthesis modelling
Authors: Sun Jin , Xiong Yaoyang , Chen Xiaobo , Xi Juntong 
Published: April 2013

PurposeThe purpose of this paper is to propose an imperfect symmetry transform framework for orbital prosthesis modelling.Design/methodology/approachCurrent models of patients with orbital defects have imperfect symmetries. Commonly used methods, such as principal component analysis (PCA) or iterative closest points algorithm (ICP), do not detect perfect symmetries and therefore produce poor results. The authors propose an improved ICP algorithm based on the M‐estimator, which can remove outliers from the optimization and detect incorrect symmetry. Using this algorithm, the mid‐facial plane of a patient's facial model can be precisely obtained despite perturbation of the facial shape due to the defect.FindingsThe results showed that the orbital prosthesis fitted well to the patient's appearance. Clinical applications confirmed that this framework is attractive and has the potential for use in creating desired orbital prostheses or other bilateral maxillofacial prostheses in daily clinical practice.Practical implicationsThe method described in this report will improve the fabrication accuracy of orbital prostheses or other bilateral maxillofacial prostheses.Originality/valueThis imperfect symmetry transform framework has great potential for use in clinical applications because of its advantages over other existing methods in terms of accuracy.
Instability behaviours of a jet array in inkjet printing of molten caprolactam
Authors: Fathi Saeed , Dickens Phill , Hague Richard 
Published: April 2013

PurposeThe purpose of this paper is to present the findings on jet array instabilities of molten caprolactam. Initial investigations showed that although a suitable range of parameters was found for stable jetting, there were cases where instabilities occurred due to external sources such as contamination.Design/methodology/approachThe inkjet system consisted of a melt supply unit, filtration unit and printhead with pneumatic and thermal control. A start‐up strategy was developed to initiate the jetting trials. A digital microscope camera monitored the printhead nozzle plate to record the jet array stability within the recommended range of parameters from earlier research. The trials with jet instabilities were studied to analyse the instability behaviour.FindingsIt was found that instabilities occurred in three forms which were jet trajectory error, single jet failure and jet array failure. Occasionally, the jet with incorrect trajectory remained stable. When a jet failed, bleeding of melt from the nozzle due to the actuations influenced the adjacent jets initiating an array of jets to fail similar to falling dominos.Originality/valueThe research concept is novel and investigating the jet array instability behaviours could give an understanding on jetting reliability issues.
Heterogeneity as heterodoxy in development policy
Authors: Chowdhury Khan Farida 
Published: April 2013

PurposeA fundamental premise of economic theory is that of a homogenous subject. This unified and intentional subject also implicitly defines the welfare function that forms the foundation of economic development theory and policy today. Unfortunately, such a concept of agency is representative of mostly urban and majority populations and does not include indigenous communities who are peripheral in most developing nations. The concept of development presumes an attachment to modernization and deracination, paying little heed to conservation of natural resources that are of sacral value to tribal communities. This paper aims to show how economics neglects cultural and group differences and yet asserts a powerful influence on development policy. Institutional economists and anthropologists have contested this hegemony but at the same time have also been co‐opted into development management in several ways that are discussed below.Design/methodology/approachThe case of indigenous communities in Bangladesh is investigated and their exclusion from development elucidated by citing the conflicts that tribal groups have had with majority populations and the state. This is compared to the situation of tribal communities in the state of Kerala in India.FindingsIt is concluded that a heterogeneous imaginary at the level of the nation state allows possibilities for indigenous voices to be represented in development policy formation and that such heterogeneity itself opens the channel for an alternative construction of development.Research limitations/implicationsThe case studies may not be widely applicable to every context.Practical implicationsThe universality of policy suggestions should be questioned if such policy is not representative of minorities within the context of a nation.Originality/valueThe point that methodological individualism and the grounding in economics of development theory leads it to avoid community concerns has not been addressed before. The paper also looks at a historical development of the discourse of development in a new way. Finally, the case of Bangladesh has not been discussed in this manner or compared to Kerala.
The effect of sustainability on commercial occupiers' building choice
Authors: Levy Deborah , Peterson Gemma 
Published: April 2013

PurposeThe purpose of this paper is to explore how the availability of sustainable buildings may affect the decisions made by office occupiers in their building selection process.Design/methodology/approachThe structure of the paper includes a review of both the sustainability literature and traditional location literature which serves to inform the study. A qualitative study comprising 13 in‐depth one‐to‐one interviews with decision makers of a variety of organisations who have chosen to locate in a “sustainable” building within the central business district in Auckland, New Zealand is undertaken.FindingsThe research suggests that selecting a building that is perceived to be sustainable by the market may not be the ultimate driving factor in the office location decision and that more emphasis is placed on micro location factors, attractiveness to staff, marketing and flexibility. The importance of each of these factors tends to be influenced by the size and type of organisation as well as the availability of suitable buildings in the market. The research reinforces the finding that organisations generally seek accommodation that can “add value” to their specific business.Practical implicationsThe study provides a deeper understanding on the impact of the emergence of sustainable buildings in the decision‐making process of office tenants and how this may be affected by the size and type of the occupier organisation. These findings will be of practical application to property professionals involved in the development, sale and valuing of sustainable buildings.Originality/valueThis paper provides in‐depth insights into business location decisions from the perspective of a variety of tenants choosing to locate within a CBD.
Service‐dominant innovation in the built environment
Authors: Sivunen Matti , Pulkka Lauri , Heinonen Jukka , Kajander Juho‐Kusti , Junnila Seppo 
Published: April 2013

PurposeThe main aim of this paper is to examine how commercial sustainability innovation projects in real estate and construction industries utilise the contemporary market‐oriented innovation models based on the service‐dominant logic.Design/methodology/approachA survey of a large set of sustainability innovation projects was conducted and analysed.FindingsThe results show that over a third of the examined projects lack all the necessary innovation components recognised in the literature. Furthermore, very few projects utilised concurrent market feedback in the development phase. The study suggests that sustainability innovations fail commercially in built environment, because they lack active customer participation and value network involvement, and they aim for incremental instead of radical improvements.Research limitations/implicationsFuture research should address available ways for companies in the real estate and construction industries to take advantage of their unused potential in climate change mitigation business through innovation.Practical implicationsOrganisations striving for sustainability innovations should aim at radical instead of incremental innovation, and focus on customer participation and involvement of the value network. The innovation processes in the construction sector could be organised better by utilising tested service‐dominant models.Originality/valueThis study is among the first to address innovation elements based on the service‐dominant logic in analysing projects aiming at sustainability innovation in real estate and construction industries.
Adoption of high performance building systems in hot‐humid climates – lessons learned
Authors: Nahmens Isabelina , Reichel Claudette 
Published: April 2013

PurposeThe purpose of this paper is to explore the adoption process of high performance building technologies, including alternative wall systems, in hot‐humid climates. Challenges faced by homebuilders adopting high performance building technologies, and resulting energy performance are discussed.Design/methodology/approachThe paper is a case study of four homebuilders using high performance building technologies, including advanced framing, panelised and modular. For each homebuilder, a baseline and a demonstration house were evaluated for energy performance and technology adoption. Homebuilders were interviewed to identify implementation challenges and barriers faced during the construction process.FindingsThe advanced framing, modular and panelised houses used 50 percent, 42 percent, and 35 percent less energy when compared to the traditional stick‐built. Further, the modular appeared to have the greatest opportunity to boost performance for least cost. Participating builders identified cost as the top constraint to a wide adoption of high performance criteria, followed by a slow learning curve and the lack of proper marketing channels to transition from construction to sale.Research limitations/implicationsSeveral limitations of the research restrict generalisation of findings: results are based on a small sample of homebuilders; and results reflect energy performance in a hot and humid climate. It is likely that relative energy usage will change as the size, scope, and design complexity of the common element changes.Originality/valueFindings from this study will contribute to a better understanding of the usability of high performance technologies and ease the transition towards implementing high performance criteria into every builder company's culture.
Regenerating organizational strength the employee centric way
Authors: Sharma Rohini , Sahoo C.K. 
Published: April 2013

PurposeThe purpose of this paper is to understand the ways and means of creating value and delivering it through people centric initiatives that look beyond technology and reach out to people as instruments in creating a profitable, harmonious and vibrant organization.Design/methodology/approachA case study illustrates strategies of a transformational leader to turnaround an organization, whose survival was at stake, with the help of employees by unleashing their potential and communicating the vision, goals, mission and financial health of the organization.FindingsThe paper presents practical case study material from Rourkela Steel Plant – an integral part of Steel Authority of India Limited. It gives a comprehensive picture of employee centric change interventions and reforms that were the epicenter of the turnaround strategies and helped the organization towards recovery and growth after incurring heavy losses. A set of carefully designed workshops provided the framework for the involvement, motivation and engagement of people, which led to the building of a customer responsive, quality conscious, responsible and committed organizational culture.Originality/valueThis paper ascertains some of the key initiatives for value creation and delivery by involving the vital resources of the organization as illustrated by the case study. It demonstrates a number of practical tools HR professionals can utilize to create a vibrant organizational culture that facilitates free flow of ideas and taps the energy, commitment and imagination of employees, in order to increase productivity, profitability and performance of the organization.
Regionalization strategy and performance
Authors: Ruigrok Winfried , Georgakakis Dimitrios , Greve Peder 
Published: April 2013

PurposeThis paper contributes to the debate about the performance implications of adopting a regional as opposed to a global strategic posture. The aim of this paper is to argue that the performance effects of a regionalization strategy vary based on the characteristics of the industry in which the MNE operates and the composition of its top management team (TMT).Design/methodology/approachThis analysis is based on a cross‐sectional dataset of 211 large European MNEs headquartered in four Western European economies at the end of 2005.FindingsResults show that firms adopting a regional orientation outperform MNEs with global strategic positioning. This positive relationship is less pronounced under conditions of industry dynamism and inter‐regional TMT diversity.Originality/valueThe study contributes to our understanding of whether and under what conditions MNEs benefit from adopting a regional as opposed to a global strategic posture.
Technology and international orientation: sectoral differences in home‐region orientation
Authors: Curran Louise , Thorpe Michael 
Published: April 2013

PurposeThe aim of this paper is to shed light on recent debates in this journal on differences in home‐region orientation depending on type of company and the home region in which they are based.Design/methodology/approachThe paper looks at the structure of trade (imports and exports) across different types of goods in order to shed light on differences between sectors and types of technology. The paper also explores structures across regions in order to shed light on regional differences.FindingsThis research indicates that there are major differences in structures of trade between different types of goods. However, these differences do not necessarily conform to a clear pattern across different technological levels and differ between regions and the direction of trade. The fact that Asian cultures have greater psychic distance from European and North American cultures is not reflected in higher levels of home‐region orientation.Research limitations/implicationsThe paper helps to clarify some of the hypotheses on home‐region orientation recently identified in this journal and, thus, helps to advance theories about why this orientation is so prevalent. The main limitations are related to the methodology. Using trade data, the paper cannot define the boundaries of the firm and, therefore, can only make conclusions at the macro level. These conclusions can, nevertheless, help to orient work at the micro level to further explore the key questions which recent work has raised.Originality/valueLimited comparative work across sectors or technologies has been undertaken in the context of the debate on home‐region orientation. Differentiating between different types of goods can help to give us insights into why so many companies tend to focus so consistently on their home region, while others are more global.