bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of the downward trend in document supply in pharmacology: a case study from INIST in France (part 1)
Authors: Boukacem‐Zeghmouri Chérifa , Bador Pascal , Lafouge Thierry , Prost Hélène , Schöpfel Joachim 
Published: January 2007

PurposeThe article seeks to investigate the evolution of document supply of print serials.Design/methodology/approachThe study is based on data from INIST‐CNRS – document supply requests and access to electronic resources – of 95 serials with JCR impact factors in pharmacology. Data were collected from 1992 to 2003.FindingsThe results distinguish four groups of serials each with a different evolution of document supply requests. Nevertheless, the overall decline from 1999 is a global phenomenon linked to growing access to online journals and there seems little likelihood of a slowdown for the next few years.Originality/valueThis is the first of three articles on a longitudinal study over 12 years on different aspects of the relationship between document supply and impact factor (citations) in pharmacology, a scientific domain with a high use of scientific information.
Interlending and document supply: a review of the recent literature – 57
Authors: McGrath Mike 
Published: January 2007

PurposeThe purpose of this article is to provide a review of the most recent literature concerning document supply and related matters.Design/methodology/approachThe article provides the reading of over 150 journals as well as monographs, reports and web sites.FindingsThe article finds that usage statistics are still not giving a clear indication of the importance of document supply but it is confirmed that the large proportion of demand comes from a small number of titles. Open access continues to be top news along with the mass digitisation of books.Originality/valueThe article provides a useful source of information for librarians and others interested in document supply and related matters.
International sharing and delivery of library resources
Authors: Gatenby Janifer , Goldner Matt 
Published: January 2007

PurposeThe purpose of this article is to report on the latest developments at OCLC and OCLC PICA to facilitate resource sharing and end user delivery.Design/methodology/approachThe article provides a descriptive insight into the work of OCLC and OCLC PICA.FindingsThree key strategies underlie the joint OCLC and OCLC PICA approach to resource sharing: fulfillment by any means; support for both mediated and unmediated request and delivery; and provision of a comprehensive, modular framework with entry at any level.Practical implicationsThe widening of the international discovery network for materials, better knowledge, use of loan and alternative supply policies, and simplified cooperative payment systems. Libraries are encouraged to broaden their supply options, including digitize or index on demand or reference lookup.Originality/valueProvides an insight into the current work of OCLC and OCLC PICA in three areas of concern to librarians involved in resource sharing, particularly at an international level.
The impact of consortia purchasing of periodical publications on the document supply service
Authors: San José Blanca , Pacios Ana R. 
Published: January 2007

PurposeThis paper aims to show the impact of consortia purchased periodical publications on document supply services. These services have undergone considerable changes over the last five years, first decreasing but now recovering.Design/methodology/approachFirst, this paper reviews the most recent specialised literature, focusing mainly on the impact of electronic journals in libraries, their effects, and proposed actions. Second, as an example of this new behaviour, presents the document supply service data, as collected in one hospital's health‐science library in the last four years.FindingsAs evidenced by the literature, the users' acceptance of electronic journals has undoubtedly been excellent. Consortia purchasing projects have become a basic tool that expand collections, support cooperative technological development, and require negotiating skills from librarians. But these mass purchases do not seem to be the ideal solution for libraries, they entail losing freedom when choosing the collection and often make library collections homogeneous by publisher.Originality/valueReflects on what possible causes have led to the current situation and the current way to manage the collection.
IRIS: a resource‐sharing initiative in Ireland
Authors: McGoldrick Fiona 
Published: January 2007

PurposeThe purpose of this article is to document the history, development and current status of the IRIS Consortium in Ireland.Design/methodology/approachThis article provides a summary of the early history of IRIS.FindingsThe environment within which IRIS operates has changed significantly since its beginnings in the early 1990s. The worldwide web and open access repositories have introduced new modes of information delivery and access. The development of a knowledge‐based economy as a natural strategic imperative for Ireland has placed a much greater emphasis on research in the third‐level sector. This is a context that encourages cooperative library solutions, consortial approaches to information resource development, and joint development of new services, in all of which IRIS has a central role to play.Originality/valueThis article provides an insight into planning, developing, managing a consortium and resource sharing to other consortia.
Computing surface area and volume of parachutes from 3D scans
Authors: Li Peng , Lee Calvin , Corner Brian 
Published: January 2007

PurposeTo explore three‐dimensional scanning technology in capturing the shape of inflated parachutes for accurate estimation of surface area and volume.Design/methodology/approachThe volume and surface area of an inflated round parachute are important parameters for the design and analysis of its performance. However, it is difficult to acquire the three‐dimensional (3D) surface shape of a parachute due to its flexible fabric and dynamic movement. This paper presents how we collect 3D data with a laser scanner and calculate volume and surface area of parachutes from their scans. The necessary data clean and approximation steps with non‐uniform B‐spline function are introduced and implemented. Numerical integration methods are employed to estimate surface area and volume. The approximation of the parachute based on an ellipsoid is compared with the numerical integration approach in their volumes and surface areas.FindingsIt is found that 3D scanning technology, with help of mathematic program developed, provides a feasible mean to estimate the surface area and volume of inflated parachutes. The numerical integration method derived in this paper is reliable and robust for the computation.Originality/valueIt is the first time that the 3D shape of an inflated parachute has been scanned with a laser scanner. The mathematical methods developed for processing of scan data are useful for others who use 3D scanning technology. The computational approach and results of surface area and volume of inflated parachutes are valuable to parachute performance modeling and design community.
Structural optimization strategies for simple and integrally stiffened plates and shells
Authors: Afonso S.M.B. , Sienz J. , Belblidia F. 
Published: January 2007

PurposeShells are widely used structural systems in engineering practice. These structures have been used in the civil, automobile and aerospace industries. Many shells are designed using the finite element analysis through the conventional and costly trial and error scheme. As a more efficient alternative, optimization procedures can be used to design economic and safe structures.Design/methodology/approachThis paper presents developments, integration and applications of reliable and efficient computational tools for the structural optimization of variable thickness plates and free‐form shells. Topology, sizing and shape optimization procedures are considered here. They are applied first as isolated subjects. Then these tools are combined to form a robust and reliable fully integrated design optimization tool to obtain optimum designs. The unique feature is the application of a flexible integrally stiffened plate and shell formulation to the design of stiffened plates and shells.FindingsThis work showed the use of different optimization strategies to obtain an optimal design for plates and shells. Both topology optimization (TO) and structural shape optimization procedures were considered. These two optimization applications, as separate procedures produce new designs with a great improvement when compared to the initial designs. However, the combination of stiffening TO and sizing optimization using integrally stiffened shells appears as a more attractive tool to be used. This was illustrated with several examples.Originality/valueThis work represents a novel approach to the design of optimally stiffened shells and overcomes the drawbacks of both topology optimization and structural shape optimization procedures when applied individually. Furthermore, the unique use of integrally stiffened shell elements for optimization, unlike conventional shell‐stiffening optimization techniques, provided a general and extremely flexible tool.
Non‐linear dynamic analysis by three‐dimensional ordinary differential equations
Authors: Ladopoulos E.G. 
Published: January 2007

PurposeAims to propose a new dynamic model for the solution of the three‐dimensional structural analysis problem of a non‐linear (non‐symmetrical) structure which is subjected under seismic forces.Design/methodology/approachThis problem is reduced to the solution of a system of ordinary differential equations of the second kind and such a system is numerically solved by using a special kind of finite elements and by solving the corresponding eigenvalues‐eigenvectors problem.FindingsThe proposed finite element method is much smaller in degree of freedom size than commercial software, as classical linear stiffness matrices of three‐dimensional beam element have six degrees of freedom per node.Research limitations/implicationsFuture research should concentrate on the application of the new dynamic model to solve more complicated forms of non‐symmetrical structures.Practical implicationsPractical implications are given to structural analysis problems to the determination of the eigenvalues‐eigenvectors. As an example, an application is given to the determination of the eigenvalues and eigenvectors of a 15‐floor building consisting of reinforced concrete and subjected to an horizontal seismic vibration.Originality/valueThe new dynamic model which is proposed is addressed to researchers of dynamic analysis and civil engineers.
Finite element simulation for design optimisation of shape memory alloy spring actuators
Authors: Dumont Georges , Kühl Christofer 
Published: January 2007

PurposeThe purpose of this paper is the optimisation of shape memory alloy (SMA) spring actuators. The purpose of these actuators is to control active endoscopes. The objective for such endoscopes is to minimize one patient pain during operation.Design/methodology/approachA range of recently published (1990‐2002) works, which aim to provide models for SMA actuators, do not focus on the simulation and on the design of such actuators. SMAs have two main characteristics, namely the phase change and non‐linear behaviour in each phase. The proposed model is based on a mixed approach combining an Euler‐Bernoulli beam model and a bi‐dimensional finite element model. It allows the modelling of plastic behaviour and drives the phase evolution in the beam cross‐section.FindingsThe physical properties of SMAs are described and modelled. A new beam model and a numerical algorithm are proposed. Preliminary results demonstrate the performance of our method on two problems and lead to determine the actuator capability. The resulting actuator model is then integrated into an optimisation process based on genetic algorithms. The overall approach provides a design tool for SMA spring actuator subjected to design constraints.Research limitations/implicationsThe proposed method is only validated for our practical purposes. However, we believe that the optimisation methodology may have other implications in structure design.Originality/valueThis paper provides an optimisation approach that is valuable for scientists and engineers in engineering computations.
Denoising using linear and nonlinear multiresolutions
Authors: Amat Sergio , Cherif Hedi , Carlos Trillo J. 
Published: January 2007

PurposeTo provide several comparisons between linear and nonlinear approaches in denoising applications.Design/methodology/approachThe comparison is based on the peak signal noise ratio (PSNR) image quality measure. Which one of the algorithms gives higher PSNR and then denoises more the original picture is studied.FindingsNonlinear reconstruction operators can improve the accuracy of the prediction in the vicinity of isolated singularities. A better treatment of the singularities corresponding to the image edges and, therefore, an improvement on the sparsity of the multiresolution representation of images are then expected.Research limitations/implicationsIn this paper the point‐value framework is considered. Other frameworks, as the cell‐average discretization, are more suitable for image processing where noise and texture appear. But, the point value schemes can be adapted to the cell‐average discretization using primitive function.Practical implicationsPeople can use the new denoising algorithm presented in the paper.Originality/valueIn this paper nonlinear schemes in the Harten's multiresolution framework that improve the results of the classical linear schemes are presented.
A simple method for improving the SIMPLER algorithm for numerical simulations of incompressible fluid flow and heat transfer problems
Authors: Liu X.L. , Tao W.Q. , He Y.L. 
Published: January 2007

PurposeTo provide an improved version of SIMPLER algorithm which can enhance the convergence rate of the iterative solution procedure in the field of computational fluid dynamics analysis.Design/methodology/approachThe improved version of SIMPLER algorithm is developed by modifying the coefficients of the velocity correction equation and implementing the correction of pressure within an iteration cycle.FindingsThe CSIMPLER algorithm (the improved version) can enhance the convergence rate for almost all cases tested, especially for the low under‐relaxation factor situations. The pressure correction term even can be overrelaxed to further enhance the convergence rate.Research limitations/implicationsThe CSIMPLER algorithm can enhance the rate of convergence to different degree for different problems. It can only be adopted to solve the incompressible fluid flow and heat transfer.Practical implicationsCSIMPLER is a simple and effectual method to enhance the convergence rate of the iterative process for the computational fluid dynamics analysis. The existing code of SIMPLER can be easily changed to CSIMPLER.Originality/valueThe paper developed an improved version of SIMPLER algorithm with some minor changes in the existing SIMPLER code.
Optimal design of preform geometry and tribological conditions in can forming
Authors: Rodič Tomaž , Cukjati Domen , Grešovnik Igor 
Published: January 2007

PurposeTo present numerical techniques and results of finite element based optimisation of material forming process for production of shaped food and beverage cans.Design/methodology/approachThe objectives were achieved by combining finite element system ELFEN with optimisation shell INVERSE. These computer systems were applied to optimisation of preform design, optimisation of tribological conditions between can body and individual segments of the tooling system as well as to optimisation of kinematics of the tooling segments.FindingsNumerical analyses show that preform design offers the highest optimisation potential. For preform shape optimisation a very efficient algorithm has been developed which enables effective minimisation of the objective function.Originality/valueThe paper identifies three main technological possibilities to optimise production process for shaped cans and quantifies the effects of each option. It also identifies the most efficient optimisation techniques to improve the investigated process.
Discrete element simulation of the behavior of bulk granular material during truck braking
Authors: Zuo Shu‐chun , Xu Yong , Yang Quan‐wen , Feng Y.T. 
Published: January 2007

PurposeTo simulate the dynamic feature of bulk granular material (such as agricultural products) during sudden braking of a truck by applying discrete element method.Design/methodology/approachThe bulk granular material was modeled by the discrete element approach, in which the spherical elements were used to represent the granular particles; the interaction between two in‐adhesive particles was modeled by Hertz for normal interaction, and by Mindlin and Deresiewicz for tangential interaction; the interaction between two particles with adhesion was modeled by the JKR theory for normal interaction, and by Thornton's theory for the tangential interaction. Different initial conditions (braking speeds/accelerations) were considered. The dynamic system was numerically solved by the central difference based explicit time integration, and the dynamic impact forces were recorded to further analysis.FindingsThe computation predicted that the resultant dynamic force acting upon the front wall behaves in four stages, i.e. increasing, plateau, sharp increasing and drop with damped fluctuation. It was observed that, the shorter the breaking time is, the faster the force reaches its peak, and the greater the peak value is. The phenomenon was in good agreement with physical principals and common knowledge.Research limitations/implicationsIt is an application of the discrete element method and, therefore, no important contribution is made to advance the methodology.Practical implicationsThe proposed modeling approach may serve as a useful tool for advanced design of trucks.Originality/valueThis paper is the first to apply the advanced discrete element method to the problem concerned.
Iterative preform design technique by tracing the material flow along the deformation path
Authors: Hong J.T. , Lee S.R. , Park C.H. , Yang D.Y. 
Published: January 2007

PurposeIn the finite element analysis of a hot forging process, it is difficult to design an optimal preform because of highly nonlinear characteristics of design variables. In this paper, a new preform design method which can reduce the forming load and the die wear by removing the flash is developed and applied to the pre form design of a piston.Design/methodology/approachAfter finite element analyses of hot forging processes, if the final product is found to have excessive flash and cause high die wear, a new preform design technique, so‐called iterative preform design technique is applied to obtain an optimal preform design. From the results of FE simulations, a boundary region at the outlet of the flash is first selected. Then, by tracing the section along the deformation path to the initial billet, it is possible to obtain a mapped section boundary in the initial billet. After updating the initial shape by removing the exterior region of the mapped section boundary, a finite element simulation is carried out with the updated initial shape. Iterations should be continued until a desired result is obtained.FindingsIt has been confirmed that the proposed preform design technique has a negligible effect on the initial forgeability of the workpiece. It is expected that the tool life will be increased, because the forming load and die wear are reduced as the number of iterations are increased. Moreover, because the preform design reduces the flash, it thereby reduces the waste of material.Originality/valueIn the 3D finite element analysis of a hot forging process, several optimal preform design techniques have been developed. However, it is difficult to use the techniques in general problems because it is difficult to formulate cost functions, which mainly depend on the experience and physical insight of the designer. In addition, tremendous time is consumed in optimizing a problem as a large number of iterations are required in minimizing the objective function. The proposed preform design technique is simple enough to apply to general hot forging problems involving excessive flash. The proposed preform design technique is an offline method and easy to apply to any other analysis program, including commercial programs.
A practical investigation to solving the inverse problem of crack identification through vibration measurements
Authors: Ressing Henning , Gadala Mohamed S. 
Published: January 2007

PurposeTo investigate the feasibility of using single/multi variable optimisation techniques with vibration measurements in solving the inverse crack identification problem.Design/methodology/approachThe finite element method is used to solve the forward crack problem with a special nodal crack force approach. The multi‐variable optimisation approach is reduced to a much more efficient single‐variable one by decoupling the physical variables in the problem.FindingsIt is shown that, for the crack identification problem, global optimisation algorithms perform much better than other algorithms relying heavily on objective function gradients. Simultaneous identification of crack size and location proved to be difficult. Decoupling of the physical variable is introduced and proved to provide efficient results with single‐variable optimisation algorithms.Research limitations/implicationsNeed for improving the reliability and accuracy of the procedure for smaller crack sizes. Need for developing and investigation more rigorous and robust multi‐variable optimisation algorithm.Practical implicationsAny information about approximate crack size and location provides significant aid in the maintenance and online monitoring of rotating equipment.Originality/valueThe paper offers practical approach and procedure for online monitoring and crack identification of slow rotating equipment.
Fuzzy logic controller for overhead cranes
Authors: Hayajneh Mohammed T. , Radaideh Saleh M. , Smadi Issam A. 
Published: January 2007

PurposeTo propose a new method for controlling the overhead crane systems based on the theory of fuzzy logic with a reduced number of rules than has appeared before in the literature. The proposed fuzzy logic controller (FLC) can be implemented to move the overhead crane along a desired path while ensuring that the payload is swing free at the end of the motion.Design/methodology/approachIn this study, a FLC that includes two rule bases, one for displacement control, the other for swing control, was designed and successfully implemented to move the overhead crane along a desired path while ensuring that the payload is swing free at the end of the motion.FindingsControl simulation results demonstrate that by using the proposed FLC, the overhead traveling crane smoothly moves to the destination in short time with small swing angle and almost no overshoot.Originality/valueThis paper offers practical help to whom are working in controlling the transporting the payloads to the required position as fast and as accurately as possible without collision with other equipments. The proposed FLC can be implemented to move the overhead crane along a desired path while ensuring that the payload is swing free at the end of the motion.