bluuebunny/crossref_metadata_2025_split huggingface dataset:
LTCC technology for cost‐effective packaging of photonic modules
Authors: Heilala J. , Keränen K. , Mäkinen J.‐T. , Väätäinen O. , Kautio K. , Voho P. , Karioja P. 
Published: March 2005

PurposeThe aim of the research was to evaluate the concept that utilizes structured planar substrates based on low temperature co‐fired ceramics (LTCC) as a precision platform for the passive alignment of a multimode fiber and wide‐stripe diode laser.Design/methodology/approachPresents the manufacturing process for realisation of 3D precision structures, heat dissipation structures and a cooling channel into the LTCC substrate. The developed methodology for 3D modelling and simulation of the system was used to optimize structures, materials and components in order to achieve optimal performance for the final product and still maintain reasonably low fabrication costs. The simulated optical coupling efficiency and alignment tolerances were verified by prototype realization and characterization.FindingsThe achieved passive alignment accuracy allows high coupling efficiency realisations of multimode fiber pigtailed laser modules and is suitable for mass production.Research limitations/implicationsProvides guidance in the design of LTCC precision platforms for passive alignment and presents a hybrid simulation method for photonics module concept analysis.Practical implicationsThe three‐dimensional shape of the laminated and fired ceramic substrate provides the necessary alignment structures including holes, grooves and cavities for the laser to fiber coupling. Thick‐film printing and via punching can be incorporated in order to integrate electronic assemblies directly into the opto‐mechanical platform.Originality/valueIntroduces the LTCC 3D precision structures for photonics modules enabling passive alignment of multimode fiber pigtailed laser with high efficiency optical coupling. Demonstrates the hybrid simulation methodology for concept analysis.
An assembly sequence‐planning system for mechanical parts using neural network
Authors: Sinanoğlu Cem , Rıza Börklü H. 
Published: March 2005

PurposeIn this paper, an assembly sequence planning system, based on binary vector representations, is developed. The neural network approach has been employed for analyzing optimum assembly sequence for assembly systems.Design/methodology/approachThe input to the assembly system is the assembly's connection graph that represents parts and relations between these parts. The output to the system is the optimum assembly sequence. In the constitution of assembly's connection graph, a different approach employing contact matrices and Boolean operators has been used. Moreover, the neural network approach is used in the determination of optimum assembly sequence. The inputs to the networks are the collection of assembly sequence data. This data is used to train the network using the back propagation (BP) algorithm.FindingsThe proposed neural network model outperforms the available assembly sequence‐planning model in predicting the optimum assembly sequence for mechanical parts. Due to the parallel structure and fast learning of neural network, this kind of algorithm will be utilized to model another types of assembly systems.Research limitations/implicationsIn the proposed neural approach, the back propagation algorithm is used. Various training algorithms can be employed.Practical implicationsThe simulation results suggest that the neural predictor would be used as a predictor for possible practical applications on modeling assembly sequence planning system.Originality/valueThis paper discusses a new modelling scheme known as artificial neural networks. The neural network approach has been employed for analyzing feasible assembly sequences and optimum assembly sequence for assembly systems.
Optimal design of a flexible transferring system in press automation using fuzzy clustering
Authors: Rouhani Hossein , Fazlirad Alireza , Araabi Babak N. , Lucas Caro 
Published: March 2005

PurposeModern day manufacturing has seen the replacement of manual transfer of parts between press machines with automatic transfer systems. Higher automation productivity demands greater flexibility of transfer devices. This paper deals with methods to improve the flexibility of fixtures designed to transfer parts between press machines.Design/methodology/approachDescribes methods to improve the flexibility of fixtures designed to transfer parts between press machines in Press Shop 3 at Iran Khodro Company (IKCO). A fuzzy C means clustering‐based method is developed to optimize the number and arrangement of actuators for each fixture. Economical aspects of this novel design are addressed as well.FindingsThe simulation results suggest that application of a flexible fixtures system and use of linear motors was the best method of adding flexibility to the loader‐unloader system.Originality/valueProvides evidence that flexible components are indispensable to increasing production speed and reliability in an automated system.
Online cutting stock optimization with prioritized orders
Authors: Ghodsi R. , Sassani F. 
Published: March 2005

PurposeTo have all the required components of batches of product orders ready for timely assembly and delivery, the real time wood strip cutting patterns in a major solid wood furniture manufacturing plant has to be dynamically generated based on both the order priority and the minimum wood waste.Design/methodology/approachAn adaptive fuzzy ranking method and a recursive function for pattern generation were integrated into an optimization procedure to solve the real time one‐dimensional multiple‐grade cutting stock problem when orders are prioritized.FindingsThe simulation results illustrate that the optimization algorithm produce considerably less waste than the current approach. If implemented in the industry, the saving in raw material could be in the range of 5‐10 percent.Research limitations/implicationsThe optimization algorithm is for the cut‐to‐size decisions only with the consideration of the order priorities. The overall scheduling of the production shop floor is not addressed.Practical implicationsThe algorithm can be used on the cutting machines as an online patterns generator and cutting optimizer.Originality/valueThere is no literature available for the real time one‐dimensional multiple‐grade cutting stock problem when orders are prioritized. The few commercial optimizers have unknown algorithms with unpredictable waste.
LAMDA: an example of a resource‐sharing document delivery service in UK Higher Education libraries
Authors: Goodier Rose 
Published: March 2005

PurposeAims to describe the development of the LAMDA service, from its inception as an eLib project in 1995 to its current status as a commercial service.Design/methodology/approachDescriptions of the staff structure, turnaround times, equipment and software and the LAMDA Union list are all included.FindingsAttention is drawn to LAMDA's influence on subsequent projects such as Docusend and SUNCAT.Originality/valueThe article concludes that the steep rise in electronic journal subscriptions in academic libraries has been a major factor in reducing the number of LAMDA transactions made in recent years.
Docusend: the one‐stop, integrated, document delivery broker service
Authors: Bower Gordon 
Published: March 2005

PurposeTo provide an overview and analysis of a major JISC‐funded document delivery project.Design/methodology/approachThe Docusend Project ran over a period of three‐and‐a‐half years. The article details how the original project plan was managed and how it was modified in the light of changes in the document delivery environment.FindingsThe findings from the project point to some of the issues likely to be faced in the design and implementation of a major document delivery system.Research limitations/implicationsAny future research in this area will benefit from this study, as it places the work of the project in the wider context of the many changes which are taking place in the document delivery environment.Practical implicationsThe article will be useful to those thinking about how document delivery systems and services might be managed and to anyone contemplating the establishment of a new service.Originality/valueThe Docusend Project was one of the major initiatives looking at potential new patterns and services for document delivery in the UK.
E‐books in public libraries: a terminal or termination technology?
Authors: Berube Linda 
Published: March 2005

PurposeAims to present a background to the use of electronic resources, especially e‐books, in public libraries, which appears to threaten some basic activities that define a reading culture dependent on the print book.Design/methodology/approachThere are initiatives afoot which are working to integrate e‐books into the culture and process of resource‐sharing. This paper reviews some of the issues with e‐books, and specifically how the Co‐East partnership proposes to contribute to the initiatives concerned with improving accessibility.FindingsIt is important that public libraries do take that first step in implementing an e‐books service and take care in its promotion. Their traditional role, after all, is providing the bridge between rights holders and the public and, with the advent of “disruptive technology”, this role is more crucial than ever.Originality/valueAn important precedent for this project has been the findings from the Essex e‐books project, and especially user feedback. Although no one was asking about e‐books, users from all age groups were curious enough to participate in the project, and forthcoming in offering their opinion, much of it positive, about the reading experience and the mobile technology.
Patron‐initiated borrowing and traditional ILL: the cascade experience
Authors: Chmelir Lynn 
Published: March 2005

PurposeTo report and analyze transaction data over a four‐year period for patron‐initiated borrowing via the Cascade union catalog as well as transaction data for traditional ILL in a consortium of six academic libraries in Washington State.Design/methodology/approachTransaction data for patron‐initiated borrowing via the Cascade union catalog were gathered from statistics produced by the Inn‐Reach software. Data for ILL were collected via a survey of libraries’ staff. Data for returnables and copies were analyzed at the consortium and institutional level.FindingsIn the third year of patron‐initiated borrowing, traditional ILL transactions for returnables had decreased 21 per cent consortium‐wide, the total number of transactions for returnables had increased 271.9 per cent, and the transactions for copies remained steady. Although the borrowing and lending patterns at the six libraries varied, each loaned and borrowed more returnables via patron‐initiated borrowing than via traditional ILL.Research limitations/implicationsThis study describes activity at a single consortium of only six libraries. Since the Cascade libraries have now merged into a larger consortium, the Orbis Cascade Alliance, it would be interesting to collect and analyze new data from the larger group to see if patterns have changed.Practical implicationsThe increased volume of returnables delivered to users in this consortium suggests that patron‐initiated borrowing is an effective method for resource sharing. Traditional ILL remains a necessary alternative for copies and books not available within the consortium.Originality/valueThis is the first study to examine consortium‐wide transaction data for both patron‐initiated borrowing and traditional interlibrary loan for a sustained period of time.
Interlending and document supply: a review of the recent literature – 51
Authors: McGrath Mike 
Published: March 2005

PurposeTo provide a review of the most recent literature concerning document delivery and related matters.Design/methodology/approachThe article is based on a broad range of published works, including papers, books, reports and web sites.FindingsFinds that Open Access does not seem to have a great impact on document delivery at present but its influence is growing and may well accelerate.Originality/valueThis review is a useful source of information for librarians and others interested in document delivery.
Computation of view factors for surfaces of complex shape including screening effects and using a boundary element approximation
Authors: Mezrhab A. , Bouzidi M. 
Published: March 2005

PurposeThis paper describes an approach for the automatic calculation of view factors between surfaces of arbitrary shape, when taking into account possible screening effects due to intermediate surfaces.Design/methodology/approachThe specifically developed numerical code is based on the utilization of boundary elements to fit the surfaces of an algorithm solving the shadow effect and on a Monte Carlo method for the numerical integrations.FindingsThe code has been tested for a set of geometrical configurations. It was clearly shown that it obtains good results in terms of accuracy and computing time. Its accuracy increases when the mesh of radiative surfaces is finer.Research limitations/implicationsThe use of the code is limited to opaque surfaces separated by an isothermal semi‐transparent medium which can be absorbent but not diffusing of the thermal radiation.Practical implicationsThe study of the radiative exchanges between opaque surfaces with shadow effects due to intermediate surfaces may have concrete practical applications by using this code. Indeed, the code has been used for an industrial application, in order to evaluate view factors inside an enclosure, in the framework of studies concerned with the thermal comfort inside cars.Originality/valueThe originality of this paper lies in taking into account the surfaces of complex geometries by using a boundary elements approximation, the algorithm solving the shadow effect, based on the convexity of the quadrilateral in 2D or the polyhedron in 3D.
Application of a hexahedral mesh compression method in a 3D hot forging process for efficient analysis of a flash
Authors: Hong J.T. , Lee Y.K. , Lee S.R. , Yang D.Y. 
Published: March 2005

PurposeIn the finite element analysis of a hot forging process with hexahedral elements, flash region is difficult to analyze because of the thin shape. In this paper, a hot forging process is effectively analyzed by constructing a locally fine mesh in the flash region.Design/methodology/approachWhen remeshing is decided by an error estimation and flash is generated, the boundary patch of the mesh is constructed and expanded in the normal direction of the flash region. After hexahedral mesh is constructed in the expanded patch with master grid approach, the boundary patch is compressed to the original shape and the nodes in the boundary are moved to the relative position of the boundary patch. Then, a locally fine mesh is constructed in the flash region. The quality of mesh on the boundary is again improved by adding surface element layer. Therefore, the hot forging process can be effectively analyzed by constructing the adaptive hexahedral mesh in the flash region.FindingsThe results show that the locally fine mesh can be constructed in the hexahedral mesh generation procedure by constructing mesh in the expanded patch and compressing the mesh according to the original boundary patch without affecting the compatibility of element. Then, it is applied to the analysis of a hot forging process and it has been shown that the analysis result of the proposed technique can save the analysis time remarkably relative to that of the fine mesh, while maintaining the analysis accuracy of the fine mesh.Originality/valueIn the finite element analysis of a hot forging process, the flash region is very difficult to analyze because it is difficult to construct locally fine mesh with hexahedral elements. A new adaptive mesh generation technique using hexahedral elements is suggested to overcome such difficulty and applied to the analysis of a hot forging process.
Soret driven thermosolutal convection in a shallow porous layer with a stress‐free upper surface
Authors: Er‐raki M. , Hasnaoui M. , Amahmid A. , Bourich M. 
Published: March 2005

PurposeThermodiffusion or Soret effect is a phenomenon that can be encountered in many applications. However only little is known about this phenomenon, particularly in the case of sparsely packed media (i.e. Brinkman media). The aim of this paper is to study numerically and analytically the effect of thermodiffusion on the onset of natural convection in a horizontal Brinkman porous layer with a free‐stress upper boundary.Design/methodology/approachThe study is performed by solving numerically the governing equations for different combinations of the governing parameters. An analytical solution is also developed in the case of a shallow layer using the approximation of a parallel flow in the core region to predict the critical conditions corresponding to the onset stationary, subcritical and Hopf convection.FindingsThe results obtained show that, in the presence of Soret effect, the numerical and analytical solutions agree well for long enough layers. The thermodiffusion parameter can affect considerably the supercritical and sub‐critical Rayleigh numbers and heat and mass transfer characteristics in the layer. It is also shown that the plane Le‐φ can be divided into three main regions with specific and different behaviours.Originality/valueThe Soret effect can play a stabilizing or a destabilizing role and this, depending on the sign of the separation parameter, φ.
Measuring the quality of e‐banking portals
Authors: Bauer Hans H. , Hammerschmidt Maik , Falk Tomas 
Published: March 2005

PurposeIn the internet economy, the business model of web portals has spread rapidly over the last few years. Despite this, there have been very few scholarly investigations into the services and characteristics that transform a web site into a portal as well as into the dimensions that determine the customer's evaluation of the portal's service quality.Design/methodology/approachBased on an empirical study in the field of e‐banking, the authors validate a measurement model for the construct of web portal quality based on the following dimensions: security and trust, basic services quality, cross‐buying services quality, added value, transaction support and responsiveness.FindingsThe identified dimensions can reasonably be classified into three service categories: core services, additional services, and problem‐solving services.Originality/valueThe knowledge of these dimensions as major determinants of consumer's quality perception in the internet provides banks a promising starting point for establishing an effective quality management for their e‐businesses.
The relationship between consumer innovativeness, personal characteristics, and online banking adoption
Authors: Lassar Walfried M. , Manolis Chris , Lassar Sharon S. 
Published: March 2005

PurposeThis paper explores the relationships between consumer innovativeness, self‐efficacy on the internet, internet attitudes and online banking adoption, while controlling for personal characteristics.Design/methodology/approachThe study integrates the technology acceptance model (TAM) and adoption of innovation framework to develop predictions of online banking acceptance. It distinguishes between innate consumer innovativeness, a generalized personality trait, and internet‐domain‐specific or actualized innovativeness in order to explore consumer characteristics' impact on adoption. Data are analyzed using logistic regression.FindingsWhile results confirm the positive relationship between internet related innovativeness and online banking they also surprisingly show that general innovativeness is negatively related to online banking.Research limitations/implicationsResults may or may not differ according to whether consumers are using online, telephone banking, electronic funds transfer (EFT) or direct bill payment. Our results may generalize to telephone banking and EFT as these products, like online banking, require an active consumer role in using the product. With direct bill payment, consumers need only set up the process initially and then monitor it on a semi‐regular basis.Practical implicationsFindings suggest that the type of consumer innovation matters in understanding the adoption of e‐banking processes. This supports the notion that online shoppers are distinct from traditional non‐online shoppers or highlight the unique nature of purchasing financial versus non‐financial products. Banks offering e‐banking need to recognize the importance of internet‐specific consumer innovation characteristics.Originality/valueThis paper closes a research gap as the model tested provides insights toward understanding the consumer‐based phenomenon of e‐banking, and serves to evaluate the TAM in this context. In contrast to previous research the study utilized an actual measure of e‐banking adoption versus a measure of intention to use the technology.
Customer acceptance of internet banking in Estonia
Authors: Eriksson Kent , Kerem Katri , Nilsson Daniel 
Published: March 2005

PurposeThe purpose of this paper is to study technology acceptance of internet banking in Estonia, an emerging east European economy.Design/methodology/approachThe present paper modifies the technology acceptance model and applies it to bank customers in Estonia, because Estonia, a country with a developing economy, has focused on internet banking as an important distribution channel.FindingsThe findings suggest that internet bank use increases insofar as customers perceive it as useful. The perceived usefulness is central because it determines whether the perceived ease of internet bank use will lead to increased use of the internet bank. Put differently, a well‐designed and easy to use internet bank may not be used if it is not perceived as useful. We thus conclude that the perceived usefulness of internet banking is, for banks, a key construct for promoting customer use. We also suggest that models of technology acceptance should be re‐formulated to focus more on the key role of the perceived usefulness of the service embedded in the technology.Research limitations/implicationsImplications for banks are that they need to put much effort not only into making a user‐friendly internet bank, but also into explaining to their customers how the internet bank is useful to them.Originality/valueContributes to the literature on internet banking in an East European economy.