bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of filler and cure systems on thermal aging resistance of natural rubber vulcanizates under strained condition
Authors: Choi Sung‐Seen , Jose Jobin , Lyu Min‐Young , Huh Yang‐Il , Cho Baik Hwan , Nah Changwoon 
Published: July 2010

AbstractAging and decomposition of polymer based articles are influenced by various environmental factors. Hence, it is important to research the various factors precisely to interpret the aging mechanism. This study deals with the tensile set properties of natural rubber (NR) vulcanizates with different reinforcing and cure systems after thermal aging. The tensile set increased with increasing both the aging temperature and aging period. Thermal aging resistance and tension set was enhanced by increasing the cure accelerator content in the sample. The carbon black‐filled NR vulcanizates showed better thermal aging resistance than the silica‐filled ones. It was found that silane coupling agent enhanced the thermal aging resistance of the silica‐filled NR vulcanizates. The experimental results could be explained by the cross‐link density change and also from the consumption of the antidegradants due to thermal aging. The permanent tension set and cross‐link density were increased as the aging temperature and aging time were increased. The filler and cure systems were found to influence on the surface morphologies of the thermally aged samples. The cross‐link density change was a key factor of the changes of tension set. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Molecular characterization ofmariner‐like elements in emerald ash borer,Agrilus planipennis(Coleoptera, Polyphaga)
Authors: Rivera‐Vega L. , Mittapalli O. 
Published: July 2010

AbstractEmerald ash borer (EAB, Agrilus planipennis), an exotic invasive pest, has killed millions of ash trees (Fraxinus spp.) in North America and continues to threaten the very survival of the entire Fraxinus genus. Despite its high‐impact status, to date very little knowledge exists for this devastating insect pest at the molecular level. Mariner‐like elements (MLEs) are transposable elements, which are ubiquitous in occurrence in insects and other invertebrates. Because of their low specificity and broad host range, they can be used for epitope‐tagging, gene mapping, and in vitro mutagenesis. The majority of the known MLEs are inactive due to in‐frame shifts and stop codons within the open reading frame (ORF). We report on the cloning and characterization of two MLEs in A. planipennis genome (Apmar1 and Apmar2). Southern analysis indicated a very high copy number for Apmar1 and a moderate copy number for Apmar2. Phylogenetic analysis revealed that both elements belong to the irritans subfamily. Based on the high copy number for Apmar1, the full‐length sequence was obtained using degenerate primers designed to the inverted terminal repeat (ITR) sequences of irritans MLEs. The recovered nucleotide sequence for Apmar1 consisted of 1,292 bases with perfect ITRs, and an ORF of 1,050 bases encoding a putative transposase of 349 amino acids. The deduced amino acid sequence of Apmar1 contained the conserved regions of mariner transposases including WVPHEL and YSPDLAP, and the D,D(34)D motif. Both Apmar1 and Apmar2 could represent useful genetic tools and provide insights on EAB adaptation. © 2010 Wiley Periodicals, Inc.
Stepped frequency ground‐penetrating radar survey with a multi‐element array antenna: Results from field application on archaeological sites
Authors: Linford Neil , Linford Paul , Martin Louise , Payne Andy 
Published: July 2010

AbstractA series of trial geophysical surveys were conducted with a 3d‐Radar GeoScope ground‐penetrating radar (GPR) utilizing a multi‐element array antenna. This system offers the potential for rapid data acquisition at very high sample densities over a wide frequency bandwidth. Field tests, conducted over the Roman town at Silchester, Hampshire, UK, suggested that a revised antenna configuration was necessary to obtain optimum results from the system, which was then successfully deployed in the collection of over 5 ha of survey data at a sample density of 0.075 m × 0.075 m. The wide area survey produced a wealth of archaeological detail to complement and expand upon the extensive record of excavation, aerial photography and other geophysical results. Initial trial surveys were conducted with a range of antenna arrays (B2431, B1831 and B1823) incorporating different sized elements to fully exploit the wide potential bandwidth of the system. However, the differing response of elements proved difficult to combine within a single data set and a marked increase in quality was obtained with the use of a prototype V1821 antenna array of identical sized elements. Some concerns remain regarding both the suitability of air‐launched antenna arrays to certain site conditions, as one early survey visit to Silchester produced very poor results that remain unexplained, and the maximum penetration depth compared with an impulse GPR using ground‐coupled antenna. © 2010 Crown copyright.
Modeling and simulation of vehicle projection arrival–discharge process in adaptive traffic signal controls
Authors: Fang Fang Clara , Elefteriadou Lily 
Published: July 2010

AbstractReal‐time signal control operates as a function of the vehicular arrival and discharge process to satisfy a pre‐specified operational performance. This process is often predicted based on loop detectors placed upstream of the signal. In our newly developed signal control for diamond interchanges, a microscopic model is proposed to estimate traffic flows at the stop‐line. The model considers the traffic dynamics of vehicular detection, arrivals, and departures, by taking into account varying speeds, length of queues, and signal control. As the signal control is optimized over a rolling horizon that is divided into intervals, the vehicular detection for and projection into the corresponding horizon intervals are also modeled. The signal control algorithm is based on dynamic programming and the optimization of signal policy is performed using a certain performance measure involving delays, queue lengths, and queue storage ratios. The arrival–discharge model is embedded in the optimization algorithm and both are programmed into AIMSUN, a microscopic stochastic simulation program. AIMSUN is then used to simulate the traffic flow and implement the optimal signal control by accessing internal data including detected traffic demand and vehicle speeds. Sensitivity analysis is conducted to study the effect of selecting different optimization criteria on the signal control performance. It is concluded that the queue length and queue storage ratio are the most appropriate performance measures in real‐time signal control of interchanges. Copyright © 2010 John Wiley & Sons, Ltd.
Hybrid model for prediction of bus arrival times at next station
Authors: Yu Bin , Yang Zhong‐Zhen , Chen Kang , Yu Bo 
Published: July 2010

AbstractEffective prediction of bus arrival times is important to advanced traveler information systems (ATIS). Here a hybrid model, based on support vector machine (SVM) and Kalman filtering technique, is presented to predict bus arrival times. In the model, the SVM model predicts the baseline travel times on the basic of historical trips occurring data at given time‐of‐day, weather conditions, route segment, the travel times on the current segment, and the latest travel times on the predicted segment; the Kalman filtering‐based dynamic algorithm uses the latest bus arrival information, together with estimated baseline travel times, to predict arrival times at the next point. The predicted bus arrival times are examined by data of bus no. 7 in a satellite town of Dalian in China. Results show that the hybrid model proposed in this paper is feasible and applicable in bus arrival time forecasting area, and generally provides better performance than artificial neural network (ANN)–based methods. Copyright © 2010 John Wiley & Sons, Ltd.
IF‐EM: An interval‐parameter fuzzy linear programming model for environment‐oriented evacuation planning under uncertainty
Authors: Tan Qian , Huang Guo H. , Wu Chaozhong , Cai Yanpeng 
Published: July 2010

AbstractThe processes and factors involved in evacuation activities are associated with a variety of uncertainties, posing major challenges to evacuation planners. This study represents an attempt to employ inexact optimization techniques for addressing uncertainties in evacuation practices. In this study, an interval‐parameter fuzzy evacuation management (IF‐EM) model is developed for supporting environment‐oriented evacuation management under uncertainty. Through IF‐EM, uncertainties in the model's stipulations and coefficients which are expressed as fuzzy sets and interval numbers can be directly communicated into the optimization process, greatly enhancing the robustness of the optimization system. The model is then applied to a case study and solved through a two‐step interactive algorithm. A number of evacuation schemes can be generated by adjusting decision variables within their solution intervals according to projected planning conditions, reflecting various decision policies and a compromise between system optimality and stability. The relationships among vehicle allocation pattern, evacuation time, system satisfaction level, and system reliability level can be effectively reflected, facilitating more in‐depth analyses of interactions among system efficiency, environmental protection, and economic cost. Results from the case study suggest that the proposed IF‐EM model is applicable to practical evacuation problems that are associated with uncertainties and complexities. Copyright © 2010 John Wiley & Sons, Ltd.
Kinetics of the self‐aggregation and film formation of poly‐L‐proline at high temperatures explored by circular dichroism spectroscopy
Authors: Tooke Lonna , Duitch Laura , Measey Thomas J. , Schweitzer‐Stenner Reinhard 
Published: July 2010

AbstractPoly‐L‐proline has been used as a model system for various purposes over a period of more than 60 years. Its relevance among the protein/peptide community stems from its use as a reference system for determining the conformational distributions of unfolded peptides and proteins, its use as a molecular ruler, and from the pivotal role of proline residues in conformational transitions and protein–protein interactions. While several studies indicate that polyproline can aggregate and precipitate in aqueous solution, a systematic study of the aggregation process is still outstanding. We found, by means of UV‐circular dichroism and IR measurements, that polyproline is predominately monomeric at room temperature at millimolar concentrations. Upon heating, the polypeptide stays in its monomeric state until the temperature reaches a threshold of ca. 60°C. At higher temperatures, the peptide aggregates as a film on the inside surface of the employed cuvette. The process proceeds on a time scale of 103 s and can best be described by a bi‐exponential relaxation function. The respective CD and IR spectra are qualitatively different from the canonical spectra of polyproline in aqueous solution, and are indicative of a highly packed state. © 2009 Wiley Periodicals, Inc. Biopolymers 93: 451–457, 2010.This article was originally published online as an accepted preprint. The “Published Online” date corresponds to the preprint version. You can request a copy of the preprint by emailing the Biopolymers editorial office at biopolymers@wiley.com
Short-term outcomes with intrathecal versus epidural analgesia in laparoscopic colorectal surgery
Authors: Virlos I , Clements D , Beynon J , Ratnalikar V , Khot U 
Published: July 2010

Abstract

Background
Epidural analgesia is the mainstay of perioperative pain management in enhanced recovery programmes. This study compared short-term outcomes following epidural or intrathecal analgesia in patients undergoing elective laparoscopic colorectal surgery.

Methods
A single-centre observational study was carried out in 175 consecutive patients who had elective laparoscopic colorectal surgery for benign or malignant disease within an enhanced recovery programme. Seventy-six patients received epidural analgesia and 99 had a single injection of intrathecal analgesia to provide perioperative pain control.

Results
Patients who had intrathecal analgesia had a reduced median postoperative pain score compared with those receiving epidural analgesia (0 versus 3·5; P &lt; 0·001), an earlier return to mobility (1 versus 4 days; P &lt; 0·001) and a shorter hospital stay (4 versus 5 days; P &lt; 0·001). Return to normal gut function and postoperative nausea and vomiting were similar in the two groups.

Conclusion
Intrathecal analgesia may have advantages over epidural analgesia in patients undergoing laparoscopic colorectal surgery.
A novel model for web‐based adaptive educational hypermedia systems: SAHM (supervised adaptive hypermedia model)
Authors: Kahraman H. Tolga , Sagiroglu Seref , Colak İlhami 
Published: July 2010

AbstractExisting adaptive educational hypermedia systems focus on preparing adaptive educational environments for students and educators meeting their needs. In an educational adaptive hypermedia (AH) application, important problems faced by application developers (educators) are to create and update the domain model accurately. This study presents a new reference model and its concept for web‐based adaptive educational hypermedia called SAHM (supervised adaptive hypermedia model). The new model redefines the storage layer of existing AH reference models and helps to solve the problems encountered in AH applications. With the help of this proposed model, application developers might develop a domain model of AH applications easily, effectively, and successfully. It is expected that the new SAHM would provide a new direction in designing new and more adaptive systems and new applications. © 2010 Wiley Periodicals, Inc. Comput Appl Eng Educ 21: 60–74, 2013
A visual toolbox for modeling and testing multi‐net neural systems
Authors: Melin Patricia , Mendoza Olivia , Castillo Oscar , Castro Juan Ramon 
Published: July 2010

AbstractNeural networks (NN) and muti‐net neural systems are popular and important topics for graduate engineering students. This paper describes a visual toolbox that has been developed to perform experiments with new multi‐net neural structures, including ensemble and modular NN approaches. This toolbox can be considered an important contribution for graduate engineering education and research because it is a complete tool that allows to draw models, set parameters, save projects, and generate files with results in a user friendly visual environment. Experimental results with a group of students after using the toolbox show a significant improvement on the acquired knowledge of NNs concepts. © 2010 Wiley Periodicals, Inc. Comput Appl Eng Educ 21: 164–184, 2013
Community and school choice: Geographies of care and responsibility
Authors: Wilkins Andrew 
Published: July 2010

AbstractThis paper draws on elements of critical discursive psychology in order to explore some of the issues and concerns raised by parents' responses to the policy and practice of school choice. Drawing on data from a group of mothers of diverse social class and racial backgrounds, this paper examines the dilemmas some mothers engage with in their role as chooser—reconciling competing rationalities for choosing or trying to manage contradictions. A central argument of this paper is that the policy and political context shaping the emergence of school choice in Britain has provisionally secured the development of certain trends in education—consumerism, individualism and competition. Alongside and coupled with this has been the veneration of a narrow utilitarian conception of parents as consumers of education services, defined as people who share the capacity and willingness to maximize the utility of their decisions in a rationally self‐interested way. This paper questions the value of this approach as a framing for understanding the aspirations, motivations and fantasies informing parents' school choice and highlights instead the ways in which some mothers articulate the importance of community in their decision‐making practices. Copyright © 2010 John Wiley & Sons, Ltd.
Group identity, ethnic separatism and multiple out‐groups: The Basque case
Authors: Martinovic Borja , Verkuyten Maykel , Weesie Jeroen 
Published: July 2010

AbstractWithin the context of the Basque Country in Spain we examined how ethnic (Basque) and national (Spanish) identification relate to the evaluation of Spaniards, Basques, Andalusians and Catalans. On a sample of adolescent participants we tested a structural equation model which considered identity content (Basque separatism) as a mediator of the relationship between group identifications and group evaluations. While Spanish and Basque identification were associated with a positive evaluation of Spanish and Basque in‐groups, respectively, the evaluation of out‐groups that are relatively similar to the in‐group were not affected by identification. In contrast, dissimilar out‐groups tended to be evaluated more negatively by higher in‐group identifiers. Basque separatism mediated the negative relationship between Basque identification and the evaluation of Spaniards and of Andalusians as a prototypically Spanish subgroup. It is concluded that identification relates differently to the evaluation of different out‐groups, and that the ideological content of identity plays an important role in determining intergroup relations. Copyright © 2010 John Wiley & Sons, Ltd.
The SCAI Structural Heart Disease Council: Toward addressing training, credentialing, and guidelines for structural heart disease intervention
Authors: Feldman Ted , Ruiz Carlos E. , Hijazi Ziyad M. 
Published: July 2010

AbstractThe field of structural heart disease (SHD) intervention has grown rapidly over the past several years. While training program content, standards, credentialing, and board examinations for percutaneous coronary intervention have matured and become well developed, no such structure exists in the field of SHD. Recognition of the need for training program standards and SHD curriculum stimulated the SCAI to form a SHD council, described in this report. In the accompanying two articles, we report the results of a survey of the status of SHD training in programs in the United States and define a core curriculum for structural intervention training. © 2010 Wiley‐Liss, Inc.
Results of the society of cardiac angiography and interventions survey of physicians and training directors on procedures for structural and valvular heart disease
Authors: Herrmann Howard C. , Baxter Sandra , Ruiz Carlos E. , Feldman Ted E. , Hijazi Ziyad M. 
Published: July 2010

AbstractBackground: Minimal information is available on the number and type of procedures being performed for structural and valvular heart disease, the physicians who perform these procedures, and on the training requirements for this emerging field. Methods: Surveys were performed using an online survey of members of the Society of Cardiac Angiography and Interventions (SCAI), including its Council on Structural Heart Disease and the Congenital Heart Disease Committee. The responses of 107 US‐based interventional cardiologists were analyzed. A second questionnaire of a purposive sample of 10 training directors of US interventional cardiology programs was also performed. Results: Although many procedures (e.g., transseptal puncture, PFO, and ASD closure) are commonly performed by most respondents, others are limited to a significant minority of respondents (e.g., alcohol septal ablation, transcatheter valve repair, and implantation). In addition, the number of procedures performed varies greatly as does the training directors' estimate of the number necessary to gain proficiency. There is no single method being used to gain the requisite skills. A number of factors that limit the more widespread growth of this field were identified. Conclusions: The field of intervention for structural and valvular heart disease is new, growing rapidly, and will require a core knowledge base and new didactic methods. The cardiovascular community will be challenged to devise new training standards and credentialing approaches to serve interventionalists interested in this field. © 2010 Wiley‐Liss, Inc.
Premere occlusion system for transcatheter patent foramen ovale closure: Mid‐term results of a single‐center registry
Authors: Rigatelli Gianluca , Cardaioli Paolo , Dell'Avvocata Fabio , Giordan Massimo , Chinaglia Mauro 
Published: July 2010

AbstractBackground: Transcatheter closure of patent foramen ovale (PFO) with rigid devices may be problematic in patients with long channel PFO: alternative devices with asymmetrical opening and more physiological positioning may be preferable in such cases. We present the mid‐term results of transcatheter closure of PFO with Premere Occlusion System, a device studied for this specific anatomy, in a single‐center registry of adults with previous cerebral ischemia. Methods: During a 53‐months period (July 1, 2005 to December 1, 2009) 70 patients (48 females and 22 males, mean age 38 ± 6.7 years) with previous stroke were admitted in our center for transcatheter closure of PFO with Premere Occlusion System on the basis of absence of moderate or severe atrial septal aneurysm (ASA) on Transesophageal echocardiography and intracardiac echocardiography (< 3RL or 3LR ASA and length of PFO channel >10 mm). Results: The procedure was successful in all of the patients with no peri‐operative and in‐hospital complications. Forty‐six 20 mm and twenty‐four 25 mm Premere devices were implanted. Rates of procedural success, predischarge occlusion, and complication were: 100%, 95.7% and 0%, respectively. On mean follow‐up of 40 ± 10.9 months (range 6–54), the follow‐up occlusion rate was 98.5%. During follow‐up, no cases of permanent atrial fibrillation, aortic/atrial erosion, device thrombosis, or atrioventricular valve inferences were noted. Conclusion: The mid‐term outcomes of our registry suggests that the Premere Occlusion System may be an excellent device for patients with long‐channel PFO and absence of moderate/severe ASA, offering a physiological and anatomically respective closure of PFO also in patients with hypertrophic rims. © 2010 Wiley‐Liss, Inc.