bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fitting users' needs into Web‐based area studies resources: A study of the Latin American Network Information Center (LANIC)
Authors: Letalien Bethany Lynn , Chen Hsin‐Liang 
Published: January 2005

AbstractThe Latin American Network Information Center (LANIC, http://lanic.utexas.edu/) is an academic Website that houses various databases and similar projects and provides directory access to sites in and about Latin America. Exploratory research into the site's usability was performed in October and November of 2002 through surveys, card sorting, and observation. Problems addressed included users' (in)ability to identify and use databases, (in)adequacy of the site's and the directory's hierarchical structures, (in)adequacy of subject terms, and page size. Several open‐ended questions were used to solicit criticisms and suggestions from users. Overall, users were successful in using the Website and expressed satisfaction with it, but some problems, both major and minor, were uncovered.
The role of narrative in understanding digital video: An exploratory analysis
Authors: Wilkens Todd , Hughes Anthony , Wildemuth Barbara M. , Marchionini Gary 
Published: January 2005

AbstractNarrative is perhaps the oldest and most widely used form for organizing information and human experience, thus, it is not surprising that there is a significant body of research concerning narrative and its importance to comprehension and understanding. One important outcome of this research is the concept of narrative intelligence, the human tendency to fit experience into narrative form. This research is extremely relevant to information seeking in general and sense‐makingThroughout the paper we are referring to the general process of sense‐making (i.e. how people make sense of and construct meaning in their worlds) and not to the Sense‐Making methodology of Dervin (1992).
in particular. This paper outlines the basic principles and research supporting the concept of narrative intelligence and its applicability to the ways in which people make sense of digital video. We explore relevant theory and research in sense‐making, surrogates, narrative, and narrative intelligence and then present the preliminary results of two research studies. The first clarifies and operationalizes the concept of narrative as it relates to video. The second demonstrates how narrativity can have significant effects on information seeking and sense‐making in digital video. Results from these studies have implications for how syntactic form can be used as a means of indexing digital video.
Multitasking Web searching and implications for design
Authors: Ozmutlu Seda , Ozmutlu H. C. , Spink Amanda 
Published: January 2005

AbstractThis paper presents findings from a study of users multitasking searches on Web search engines. A user's single session with a Web search engine may consist of seeking information on single or multiple topics. Limited research has focused on multitasking search and the implications for Web design. Incidence of multitasking search by AlltheWeb.com and Excite Web search engine users were filtered from transaction logs. Findings include: (1) multitasking Web searches are a noticeable user behavior, one tenth of Excite users and one third of AlltheWeb.com users conducted multitasking searches, (2) multitasking search sessions are longer than regular search sessions in terms of queries per session and duration, (3) both Excite and AlltheWeb.com users search for about three topics per multitasking session and submit about 4–5 queries per topic, and (4) there is a broad variety of search topics in multitasking search sessions. The implications of our findings for Web design and further research are discussed.
Pioneering women in information science. Sponsored by SIG HFIS
Authors: Bonnici Laurie J. , Furner Jonathan , Justice Alexander , La Barre Kathryn , Miksa Shawne D. , Plant Helen 
Published: January 2005

AbstractThis Panel examines the lives and work in information science of six pioneering women – Helen Brownson, Elfreda Chatman, Edith Ditmas, Margaret Egan, Barbara Kyle, and Phyllis Richmond. In careers that collectively span more than seventy years, these women have had tremendous impact on our field. Yet the full extent of their influence has often gone unrecognized in the secondary literature. In this session, we will seek to reveal these pioneers' contributions in such areas as documentation, classification, information retrieval, and social epistemology; to identify reasons for the historical neglect of some of these contributions; and to provide links to our past that will enhance our understanding of current theory and practice in the field of library and information science.
The death of the user. Sponsored by SIG HFIS, CRIT
Authors: Rosenbaum Howard , Davenport Elisabeth , Lievrouw Leah A. , Day Ronald E. 
Published: January 2005

AbstractThis panel critically investigates the theoretical and practical issues involved with the wellestablished concept of “the user” in Library and Information Science. It suggests that digital information and communication technologies and systems are theoretically and practically undermining this concept, a concept that was already weak in its ability to fully account for agency in many events of information and knowledge.
Transborder data flow: Implications for information dissemination and policies between the U.S., Canada and Mexico. Sponsored by SIG IFP, III
Authors: Warwick Shelly , Caidi Nadia , Bergeron Pierrette , Dufour Christine , Cortes Jesus , Rumble John 
Published: January 2005

AbstractThe convergence of computing and networking has affected the ways in which people live, work and learn; the way institutions operate; and raised new issues and challenges for governments. National and global initiatives have been implemented to address the blurring of boundaries ‐geographical and political‐caused by electronic data transfer over these global networks. The flow of electronic data and digital content across jurisdictional lines calls for novel ‐or updated‐ laws and regulatory solutions (e.g., data protection, privacy, content regulation, etc.).This panel offers a comparative analysis of national laws and policies regulating the transport of data across national boundaries, with a special focus on the implications for information dissemination and access. A series of panelists from a variety of backgrounds and perspectives will explore these issues and describe how these are framed and debated in the United States, Canada and Mexico. The discussion should both inform and entice the audience to reflect on and pursue these timely problems.
The public domain under pressure. Sponsored by SIG IFP, III, STI
Authors: Hodge Gail , Uhlir Paul , Arunachalam Subbiah , Moritz Tom 
Published: January 2005

AbstractPublic domain information, whether limited to judicial decisions or extended to all government‐authored or sponsored works, has been expounded as a means of ensuring a knowledgeable citizenry, promoting economic advancement, and ensuring that publicly funded information is not “double taxed”. However, the public domain has come under increased pressures as the global information economy changes. The speakers in this session will address these pressures from a number of different national and disciplinary views.
2nd Global Information Village Plaza ‐ Connecting multi‐cultural, multi‐lingual and multi‐media universes. Sponsored by SIG III, IFP
Authors: Caidi Nadia , Menou Michel J. 
Published: January 2005

AbstractBuilding on the success of the 2002 Global Information Village Plaza, this new edition maintains its interactive format (aimed at giving ASIS&T members an opportunity to express their personal views about the challenges and opportunities that the so called “information society” represents in their personal and professional lives) and adds a new multimedia dimension. New features include an edited video segment showcasing individuals and communities from around the world and the ways in which they frame the debate; another feature is the international contest for Best Graphic Art piece related to the overarching topic of the Global Information Village Plaza. Moreover, in an attempt to widen the debate, all the SIGs will be contacted and asked to submit their reflections on the issues debated. A complete web resource dedicated to the Global Information Village Plaza will be developed that includes results from the previous year's discussions; identification of recurring themes; areas where more research is needed; links to existing resources, initiatives, and policy statements. The discussion will focus on the main issues identified in the 1st Global Information Village Plaza. To keep up with the spirit of the Global Information Village Plaza, personal submission of position statements will be sought from the information professional community around the globe. The process is due to run from May through October 2003. It will include posting and discussion by those interested of short position statements on ASIST&T and other professional listservs. Selected statements will be summarized in a series of posters during a special session. During the session, participants in the Annual Meeting will be invited to first browse through the posters and comment in writing. A general discussion will later on take place. SIG/III plans to publish a summary of the process and its outcome.
Information behavior in everyday life: Research on street‐level sex workers, new immigrants, and hair stylists. Sponsored by SIG USE
Authors: Fisher Karen E. , Baker Lynda M. , Brown Christine 
Published: January 2005

AbstractLittle research has focused on the information behavior of the general public (Julien & Duggan, 2000). In this session we report findings on how information is sought and used as part of everyday life by three distinct groups: (1) street‐level sex workers, (2) new immigrants, and (3) hairdressers.
Leveraging the power of diversity to create effective and empowering technology
Authors: Nair Sarita , Flansburg Sundra , Hanson Katherine 
Published: January 2005

AbstractVery little existing research has comprehensively examined the impact of new technologies on teaching and learning. Looking beyond the “training” of users to access and use ICTs, the work of the Gender, Diversities, and Technology Institute looks at how emerging technologies can be more effectively utilized to meet the needs of diverse learners—in effect humanizing technology. This paper reviews learning arising from a range of the Institute's research and practice, including large‐scale digital resource development that builds in accessibility and usability, online learning that engages learners and other stakeholders in creating equitable learning experiences, and e‐communications that incorporates and responds to issues arising at the intersection of gender and culture. Together, this work has raised new questions that lead to a re‐examination of the relationship between “users” and “developers,” as well as a need to look at the development process itself. The need to not only engage diverse users in the design and development process, but to also actively search for and build on the different starting points that arise from these diverse users is at the core of work to humanize technology and its impacts.
Targeted access for varied audiences to integrated, heterogeneous digital information resources
Authors: Alemneh Daniel Gelaw , Hartman Cathy Nelson , Hastings Samantha Kelly 
Published: January 2005

AbstractPortals have emerged as an important tool for facilitating single‐point‐access to digital resources. This poster presents an overview of the University of North Texas (UNT) Libraries' “Portal to Texas History” project, which aims to integrate and ensure long‐term access to large quantities of heterogeneous digital resources from many different institutions. The UNT library is undertaking the leadership role by creating the application framework, setting project standards and guidelines, and facilitating collaborative efforts for content building. Also discussed are expanded services for targeted audiences, project approaches to preservation challenges, collaboration benefits, and other issues that emerged in the process of building a platform for the portal system.
Involvement of Rho‐kinase in the contractile mechanism of human ureteral smooth muscle
Authors: Hong Sung Kyu , Kwak Cheol , Chang Jeong Byung , Kim Bong Sub , Kim Hyeon Hoe 
Published: February 2005

AbstractAimEven though many agents have been implicated as modulators of ureteral contractile activity, the exact mechanisms that control human ureteral smooth muscle contractility have yet to be clearly defined. Recently, Rho‐kinase has been reported to be involved in the contractile mechanism of smooth muscles in various organs. In the present study, we sought to investigate whether or not Rho‐kinase is expressed in the human ureteral smooth muscle, and to study its role regarding human ureteral smooth muscle contractility.MethodsUreteral samples were obtained from human adult subjects undergoing radical nephrectomy. Immunohistochemistry and Western blotting were performed to determine the presence of Rho‐kinase in human ureter. Functional studies were performed with human ureteral strips suspended in organ bath, and the effects of Y‐27632, a specific inhibitor of Rho‐kinase, on baseline tensions, spontaneous contractions, and electrical field stimulation (EFS)‐induced contractions were analyzed.ResultsThe results of immunohistochemistry and immunoblotting study indicated that Rho‐kinase is present in human ureteral smooth muscle. In functional analysis, Y‐27632 was shown to decrease the baseline tension. And, both spontaneous and EFS‐induced contractile responses of human ureteral strips were attenuated by Y‐27632 in dose‐dependent manners.ConclusionsFor the first time, the results of the present study indicate that Rho‐kinase is present in human ureteral smooth muscle and may play an important role in the intricate mechanism of human ureteral contractility and tone. Neurourol. Urodynam. 24:136–141, 2005. © 2005 Wiley‐Liss, Inc.
Polydimethylsiloxane‐magnetite nanoparticle complexes and dispersions in polysiloxane carrier fluids
Authors: Wilson K. S. , Goff J. D. , Riffle J. S. , Harris L. A. , St Pierre T. G. 
Published: January 2005

AbstractDispersions of sterically stabilized magnetite nanoparticles in polydimethylsiloxane (PDMS) carrier fluids have been prepared for potential biomedical applications. Trivinylsiloxy‐terminated PDMS was functionalized with mercaptoacetic acid or mercaptosuccinic acid to afford PDMS stabilizers containing either three or six carboxylic acid groups, respectively, at one chain‐end. Magnetite nanoparticles were synthesized by a chemical co‐precipitation reaction of FeCl2 and FeCl3 with hydroxide at pH 9–10. Subsequently, the PDMS stabilizers were adsorbed onto the magnetite nanoparticle surfaces via the carboxylate groups in an interfacial reaction at an acidic pH. The complexes were characterized with transmission electron microscopy to establish an average particle diameter of 7.4 ± SD 1.7 nm and approximately spherical shape. Complexes containing up to 67 wt% magnetite were prepared using these PDMS stabilizers, resulting in maximum saturation specific magnetizations of ∼50 emu g−1. The polymer‐magnetite nanoparticle complexes could be dispersed in PDMS oligomers to afford polysiloxane ferrofluids. Copyright © 2005 John Wiley & Sons, Ltd.
Mechanical creep and recovery of poly(styrene‐b‐ethylene/butylene‐b‐styrene) (SEBS), sulfonated SEBS (sSEBS), and sSEBS/silicate nanostructured materials
Authors: Blackwell Richard I. , Mauritz Kenneth A. 
Published: January 2005

AbstractCreep and recovery of poly(styrene‐b‐ethylene/butylene‐b‐styrene) (SEBS) and sulfonated SEBS (sSEBS) materials having various percent sulfonation, some of which were exchanged with monovalent counterions, and sSEBS/silicate hybrids, were investigated. Explanations offered for tensile and shear creep reduction for low degrees of sulfonation involved hydrogen bonding between SO3H groups and/or observed frustrated morphologies. At higher sulfonation levels, an increase in overall percent strain was rationalized in terms of either a more distinct EB phase morphology, or to residual water bound to sulfonic acid groups. This effect was also observed when the acid form materials were ion‐exchanged with monovalent counterions. The behavior of silicate‐containing systems is situational and less understood. An equation for a modified Burgers viscoelastic model was seen to fit the creep data very well. Copyright © 2005 John Wiley & Sons, Ltd.
Synthesis of methyl methacrylate and N‐aryl itaconimide block copolymers via atom‐transfer radical polymerization
Authors: Anand Vishal , Agarwal Seema , Greiner Andreas , Choudhary Veena 
Published: January 2005

AbstractThe paper describes the synthesis of block copolymers of methyl methacrylate (MMA) and N‐aryl itaconimides using atom‐transfer radical polymerization (ATRP) via a poly(methyl methacrylate)–Cl/CuBr/bipyridine initiating system or a reverse ATRP AIBN/FeCl3·6H2O/PPh3 initiating system. Poly(methyl methacrylate) (PMMA) macroinitiator, ie with a chlorine chain‐end (PMMA‐Cl), having a predetermined molecular weight (Mn = 1.27 × 104 g mol−1) and narrow polydispersity index (PDI = 1.29) was prepared using AIBN/FeCl3·6H2O/PPh3, which was then used to polymerize N‐aryl itaconimides. Increase in molecular weight with little effect on polydispersity was observed on polymerization of N‐aryl itaconimides using the PMMA‐Cl/CuBr/Bpy initiating system. Only oligomeric blocks of N‐aryl itaconimides could be incorporated in the PMMA backbone. High molecular weight copolymer with a narrow PDI (1.43) could be prepared using tosyl chloride (TsCl) as an initiator and CuBr/bipyridine as catalyst when a mixture of MMA and N‐(p‐chlorophenyl) itaconimide in the molar ratio of 0.83:0.17 was used. Thermal characterization was performed using differential scanning calorimetry (DSC) and dynamic thermogravimetry. DSC traces of the block copolymers showed two shifts in base‐line in some of the block copolymers; the first transition corresponds to the glass transition temperature of PMMA and second transition corresponds to the glass transition temperature of poly(N‐aryl itaconimides). A copolymer obtained by taking a mixture of monomers ie MMA:N‐(p‐chlorophenyl) itaconimide in the molar ratio of 0.83:0.17 showed a single glass transition temperature. Copyright © 2005 Society of Chemical Industry
Mechanical properties of woodflour/linseed oil resin composites
Authors: Mosiewicki M , Borrajo J , Aranguren MI 
Published: January 2005

AbstractThe purpose of this project was to obtain new composites using filler and resin obtained from renewable resources, combining low cost and good mechanical properties. The matrix consisted of a polyester resin synthesized from linseed oil and further crosslinked with styrene in a peroxide‐initiated reaction. Composite materials made from the unsaturated polyester/styrene thermoset and containing various percentages of woodflour were prepared and tested. The relationships between the filler content, porosity fraction, and mechanical properties of the materials were evaluated. The bending modulus and strength of the composites were significantly higher than that of the matrix. Simple models were successfully applied in the analysis of the mechanical properties of the materials. The porosity effect was also considered in the model predictions. The results of the mechanical and dynamic mechanical tests, the scanning electron micrographs of surface fractures, and the adhesion parameter calculated from the strength models all indicated that there was a strong interfacial interaction between matrix and filler. Copyright © 2005 Society of Chemical Industry
Crosslinked polyurethanes with shape memory properties
Authors: Hu Jinlian , Yang Zhuohong , Yeung Lapyan , Ji Fenglong , Liu Yeqiu 
Published: January 2005

AbstractA series of shape memory polyurethanes (SMPUs) was prepared from polycaprolactone diol (PCL) 4000, 1,4‐butanediol (BDO), dimethylol propionic acid (DMPA), triethylamine, and 4, 4′‐diphenylmethane diisocyanate (MDI), to which excess MDI or glycerin were added to obtain crosslinked shape memory polyurethanes. Their mechanical, thermomechanical, thermal and shape memory properties were investigated by using differential scanning calorimetry (DSC), Fourier‐transform (FT‐IR) spectroscopy, dynamic mechanical analysis (DMA) and tensile testing. The results showed that crosslinked SMPUs have better thermal and thermomechanical properties than those prepared from linear polyurethanes and display good shape memory effects. Copyright © 2005 Society of Chemical Industry
High chemoselectivity of CS dipolarophile in 1,3‐dipolar cycloaddition of nitrilimines and 1,2,4‐triazepin‐5‐one derivatives: experimental, theoretical and X‐ray study
Authors: Azzouzi Saida , El Messaoudi Malika , Esseffar M'hamed , Jalal Rachid , Cano Félix H. , del Carmen Apreda‐Rojas María , Domingo Luis R. 
Published: February 2005

AbstractSubstituted 2,7‐dimethyl‐3‐thioxo‐3,4,5,6‐tetrahydro‐2H‐[1,2,4]triazepin‐5‐one reacts as a dipolarophile with several N‐aryl‐C‐ethoxycarbonylnitrilimines, in equimolar quantities, to give, in all cases, two types of products: diethyl 3‐(p‐aryl)‐2‐[N′‐(p‐aryl)‐N′‐(2′,7′‐dimethyl‐5′‐oxo‐5′,6′‐dihydro‐2H‐[1,2,4]triazepin‐3′‐yl)‐hydrazino]‐2,3‐dihydro[1,3,4]thiadiazole‐2,5‐dicarboxylate (3a–3c in 20–25% yield) and ethyl 4‐(p‐aryl)‐5‐imino‐1,4‐dihydro[1,3,4]thiadiazole carboxylate (4a–4c in 45–50% yield). When 1:2 stoichiometry was used, the formation of product 3 (50%) was favoured. The reaction is entirely chemo‐ and regioselective. The structures of the compounds obtained, where aryl stands for p‐chloro‐phenyl (3b) in the first type and for tolyl (4a) in the second type, were determined by X‐ray crystallography and analysed by spectral methods (NMR and mass spectroscopy). The global and local electrophilicity/nucleophilicity have been analysed to rationalize the chemical reactivity of the reactants. Copyright © 2005 John Wiley & Sons, Ltd.
Stereospecific sequential block copolymerizations of styrene and 1,3‐butadiene with a C5Me5TiMe3/B(C6F5)3/Al(oct)3 catalyst
Authors: Ban Hoang The , Tsunogae Yasuo , Shiono Takeshi 
Published: February 2005

AbstractThis article reports a new methodology for preparing highly stereoregular styrene (ST)/1,3‐butadiene (BD) block copolymers, composed of syndiotactic polystyrene (syn‐PS) segments chemically bonded with cis‐polybutadiene (cis‐PB) segments, through a stereospecific sequential block copolymerization of ST with BD in the presence of a C5Me5TiMe3/B(C6F5)3/Al(oct)3 catalyst. The first polymerization step, conducted in toluene at −25 °C, was attributed to the syndiospecific living polymerization of ST. The second step, conducted at −40 °C, was attributed to the cis‐specific living polymerization of BD. The livingness of the whole polymerization system was confirmed through a linear increase in the weight‐average molecular weights of the copolymers versus the polymer yields in both steps, whereas the molar mass distributions remained constant. The profound cross reactivity of the styrenic‐end‐group active species with BD toward ST led to the production of syn‐PS‐b‐cis‐PB copolymers with extremely high block efficiencies. Because of the presence of crystallizable syn‐PS segments, this copolymer exhibited high melting temperatures (up to 270 °C), which were remarkably different from those of the corresponding anionic ST–BD copolymers, for which no melting temperatures were observed. Scanning electron microscopy pictures of a binary syn‐PS/cis‐PB blend with or without the addition of the syn‐PS‐b‐cis‐PB copolymers proved that it could be used as an effective compatibilizer for noncompatibilized syn‐PS/cis‐PB binary blends. © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 1188–1195, 2005