bluuebunny/crossref_metadata_2025_split huggingface dataset:
Association Between Opioid Use and Health Care Utilization as Measured by Emergency Room Visits and Hospitalizations Among Persons Living With HIV
Authors: Koeppe John , Lyda Karen , Armon Carl 
Published: January 2013

Background:
Epidemiologic studies in the non–human immunodeficiency virus (HIV) positive population have shown greater health care utilization among persons with chronic non-cancer pain on opioid therapy. However, we are not aware of any similar data in the HIV positive population.

Methods:
We evaluated health care utilization, as measured by emergency room (ER) visits and hospitalizations, among persons with HIV and chronic pain seen at an academic medical center, during the calendar year 2005. We compared these outcomes between patients on chronic opioid therapy with those not on opioids.

Results:
In univariate models chronic opioid therapy was associated with both ER visits and hospitalization: ER visits odds ratio (OR)=2.18 (95% confidence interval [CI], 1.30-3.66), hospitalization OR=1.90 (95% CI, 1.03-3.51). After multivariate analyses only nonsignificant trends remain: ER visits OR=1.71 (95% CI, 0.95-3.08); hospitalization OR=1.28 (95% CI, 0.66-2.49).

Conclusions:
In our study HIV positive individuals with chronic pain were more likely to be seen in the ER and be hospitalized if they were on opioids. However, after controlling for other variables, the association with opioids no longer remained significant.
Strategies in Postoperative Analgesia in the Obese Obstructive Sleep Apnea Patient
Authors: Porhomayon Jahan , Leissner Kay B. , El-Solh Ali A. , Nader Nader D. 
Published: January 2013

Objective:
Obstructive sleep apnea (OSA) has become an epidemic worldwide, and OSA patients frequently present for surgery. Comorbidities such as cardiovascular disease, diabetes, hypertension, stroke, gastrointestinal disorder, metabolic syndrome, chronic pain, delirium, and pulmonary disorder increase the perioperative risk for OSA patients.

Methods:
This is a narrative review of the impact of sedative and analgesic therapy on the intraoperative and postoperative course of an obese OSA patient.

Results:
An understanding of postoperative complications related to OSA and drug interactions in the context of opioid and nonopioid selection may benefit pain practitioner and patients equally.

Conclusions:
Management of acute postoperative pain in OSA patient remains complex. A comprehensive strategy is needed to reduce the complications and adverse events related to administration of analgesics and anesthetics.
Predicting Prognostic Factors in a Randomized Controlled Trial of Acupuncture Versus Topiramate Treatment in Patients With Chronic Migraine
Authors: Yang Chun-Pai , Chang Ming-Hong , Li Tsai-Chung , Hsieh Ching-Liang , Hwang Kai-Lin , Chang Hen-Hong 
Published: January 2013

Background:
This study aimed to identify predictive factors of outcome in patients with chronic migraine (CM) treated with acupuncture or topiramate in a randomized controlled trial.

Methods:
Sixty-six consecutive CM patients were treated with either acupuncture (n=33) or topiramate (n=33) in a 12-week period. Data on potential predictive factors were collected at baseline, and secondary data analysis was performed to identify factors associated with treatment response. Treatment prognosis was defined as the change in mean number of moderate/severe headache days per 4 weeks from the 4-week baseline periods.

Results:
The median change in mean number of moderate/severe headache days per 4 weeks for patients with higher baseline headache days (>20 d) was significantly greater than that for lower baseline headache days (≤20 d) (median±interquartile range: −12±2 vs. −10±1 d, P=0.01) in acupuncture group. There was a greater change in mean number of moderate/severe headache days per 4 weeks for high moderate/severe headache days (>20 d) than in low days (≤20 d) (−12±1 vs. −10±2 d, P=0.015) in acupuncture group. patients with throbbing symptoms had better prognosis with acupuncture than those without throbbing (−12±2 vs. −9.5±2.5 d, P=0.004). Higher score (>5 points) in the general expectations for improvement predicted better response in both treatment groups (>5 vs. ≤5 points: −12±2 vs. −9±2 d for acupuncture group; −10±3 vs. −7±4 d for topiramate group; P<0.001).

Conclusions:
Some variables can predict outcome in acupuncture or topiramate treatment of CM patients. Identifying predictors of prognosis of both treatments for CM may help improve outcomes in future work.
Disease Resistance Gene-Induced Growth Inhibition Is Enhanced byrcd1Independent of Defense Activation in Arabidopsis
Authors: Zhu Ying , Du Baijuan , Qian Jun , Zou Baohong , Hua Jian 
Published: January 2013

AbstractActivation of plant immune responses is often associated with an inhibition of plant growth. The molecular mechanisms underlying this fitness cost are unknown. Here, we utilize the autoimmune response mutant suppressor of npr1, constitutive1 (snc1) resulting from an activated form of the Disease Resistance (R) gene to dissect the genetic component mediating growth inhibition in Arabidopsis (Arabidopsis thaliana). The radical-induced cell death1 (rcd1) mutant defective in responses to reactive oxygen species (ROS) was isolated as an enhancer of the snc1 mutant in growth inhibition but not in defense response activation. Similarly, the vitamin C2 (vtc2) and vtc3 mutants defective in ROS detoxification enhanced the growth defects of snc1. Thus, perturbation of ROS status by R gene activation is responsible for the growth inhibition, and this effect is independent of defense response activation. This was further supported by the partial rescue of growth defects of rcd1 snc1 by the respiratory burst oxidase homolog D (rbohD) and rbohF mutations compromising the generation of ROS burst. Collectively, these findings indicate that perturbation of ROS homeostasis contributes to the fitness cost independent of defense activation.
Contractual relationships in the Hungarian milk sector
Authors: Zoltán Bakucs Lajos , Fertő Imre , Szabó Gábor G. 
Published: January 2013

PurposeThe purpose of this paper is to analyse farmers' contracting choice in the Hungarian milk sector, employing transaction cost economics framework.Design/methodology/approachThe authors focus on some key determinants of farmers' contracting choices using milk producer survey data. Different semi parametric and semi non parametric discrete choice models are applied to investigate the type of contracts, duration, number of contractors, incentives provided in the contract and business history of farmers and buyers.FindingsMain results confirm that contract‐specific investment is a strong predictor explaining contract choice and contract design. Although trust is an important factor, the authors' estimations however report some counterintuitive results. Farm size is also significantly associated with contracts and contractual arrangements. Vulnerability to opportunistic behaviour also depends on partner change switching costs and farmers' bargaining power.Originality/valueThis is a recent study that investigates the role of contracts between producers and processors, significantly contributing to the limited literature on contractual relationships in transition agricultures.
Determinants of WTP for Prosecco wine
Authors: Thiene Mara , Galletto Luigi , Scarpa Riccardo , Boatto Vasco 
Published: January 2013

PurposeUnder investigation is Prosecco wine, a sparkling white wine from North‐East Italy. Information collection on consumer perceptions is particularly relevant when developing market strategies for wine, especially so when local production and certification of origin play an important role in the wine market of a given district, as in the case at hand. Investigating and characterizing the structure of preference heterogeneity become crucial steps in every successful marketing strategy. The purpose of this paper is to investigate the sources of systematic differences in consumer preferences.Design/methodology/approachThe paper explores the effect of inclusion of answers to attitudinal questions in a latent class regression model of stated willingness to pay (WTP) for this specialty wine. These additional variables were included in the membership equations to investigate whether they could be of help in the identification of latent classes. The individual specific WTPs from the sampled respondents were then derived from the best fitting model and examined for consistency.FindingsThe use of answers to attitudinal question in the latent class regression model is found to improve model fit, thereby helping in the identification of latent classes. The best performing model obtained makes use of both attitudinal scores and socio‐economic covariates identifying five latent classes. A reasonable pattern of differences in WTP for Prosecco between CDO and TGI types were derived from this model.Originality/valueThe approach appears informative and promising: attitudes emerge as important ancillary indicators of taste differences for specialty wines. This might be of interest per se and of practical use in market segmentation. If future research shows that these variables can be of use in other contexts, it is quite possible that more attitudinal questions will be routinely incorporated in structural latent class hedonic models.
Use of cybercafé for internet access by the students of Rufus Giwa Polytechnic, Owo, Nigeria
Authors: Rachael Aladeniyi Fasa , Kehinde Fasae Joseph 
Published: January 2013

PurposeThe study aims to investigate the use of cybercafé for internet access by students of Rufus Giwa Polytechnic, Owo, Nigeria.Design/methodology/approachUsing descriptive design, 382 copies of a structured questionnaire were administered to students of the Rufus Giwa Polytechnic, Owo, who were using the institution cybercafé as at the time of the study.FindingsThe findings revealed that 75 percent of the male students make use of the cybercafé compared with their female colleagues, while the majority strongly agreed that they use it for research purposes. Google and Yahoo were the leading search engines used to explore resources, while the students acquired internet search knowledge and skills through teaching themselves followed by computer training programmes. It was also discovered that irregular electricity supply was the leading problem faced while using the cybercafé by the students, among others.Originality/valueThe paper contains an extensive study on the use of cybercafé in an academic environment in Nigeria, which will help in improving the internet access of students of tertiary institutions in Nigeria.
Interlinking educational resources and the web of data
Authors: Dietze Stefan , Sanchez‐Alonso Salvador , Ebner Hannes , Qing Yu Hong , Giordano Daniela , Marenzi Ivana , Pereira Nunes Bernardo 
Published: January 2013

PurposeResearch in the area of technology‐enhanced learning (TEL) throughout the last decade has largely focused on sharing and reusing educational resources and data. This effort has led to a fragmented landscape of competing metadata schemas, or interface mechanisms. More recently, semantic technologies were taken into account to improve interoperability. The linked data approach has emerged as the de facto standard for sharing data on the web. To this end, it is obvious that the application of linked data principles offers a large potential to solve interoperability issues in the field of TEL. This paper aims to address this issue.Design/methodology/approachIn this paper, approaches are surveyed that are aimed towards a vision of linked education, i.e. education which exploits educational web data. It particularly considers the exploitation of the wealth of already existing TEL data on the web by allowing its exposure as linked data and by taking into account automated enrichment and interlinking techniques to provide rich and well‐interlinked data for the educational domain.FindingsSo far web‐scale integration of educational resources is not facilitated, mainly due to the lack of take‐up of shared principles, datasets and schemas. However, linked data principles increasingly are recognized by the TEL community. The paper provides a structured assessment and classification of existing challenges and approaches, serving as potential guideline for researchers and practitioners in the field.Originality/valueBeing one of the first comprehensive surveys on the topic of linked data for education, the paper has the potential to become a widely recognized reference publication in the area.
SemCiR
Authors: Zarrinkalam Fattane , Kahani Mohsen 
Published: January 2013

PurposeThe purpose of this paper is to propose a novel citation recommendation system that inputs a text and recommends publications that should be cited by it. Its goal is to help researchers in finding related works. Further, this paper seeks to explore the effect of using relational features in addition to textual features on the quality of recommended citations.Design/methodology/approachIn order to propose a novel citation recommendation system, first a new relational similarity measure is proposed for calculating the relatedness of two publications. Then, a recommendation algorithm is presented that uses both relational and textual features to compute the semantic distances of publications of a bibliographic dataset from the input text.FindingsThe evaluation of the proposed system shows that combining relational features with textual features leads to better recommendations, in comparison with relying only on the textual features. It also demonstrates that citation context plays an important role among textual features. In addition, it is concluded that different relational features have different contributions to the proposed similarity measure.Originality/valueA new citation recommendation system is proposed which uses a novel semantic distance measure. This measure is based on textual similarities and a new relational similarity concept. The other contribution of this paper is that it sheds more light on the importance of citation context in citation recommendation, by providing more evidences through analysis of the results. In addition, a genetic algorithm is developed for assigning weights to the relational features in the similarity measure.
Fully flexible assembly systems (F‐FAS): a new concept in flexible automation
Authors: Rosati Giulio , Faccio Maurizio , Carli Andrea , Rossi Aldo 
Published: January 2013

PurposeFlexible automated assembly is an emerging need in several industries. The purpose of this paper is to address the introduction of an innovative concept in flexible assembly: the fully flexible assembly system (F‐FAS).Design/methodology/approachAfter an analysis of the state of the art, the authors describe the proposed F‐FAS, from a layout, constitutional elements, functioning principles and working cycle point of view. Second, the authors compare the traditional FAS and the manual assembly system versus the proposed F‐FAS according to their throughput and unit production costs, deriving a convenience map as a function of the number of components used in assembly and of the efficiency of the F‐FAS. Finally, using a prototype work cell developed at the Robotics Laboratory of University of Padua, the authors validate the F‐FAS concept.FindingsResults of the research indicate that the concept of full‐flexibility can be exploited to bring automation to a domain where traditional FAS are not competitive versus manual assembly. In fact, the F‐FAS outperforms both traditional FAS and manual assembly, in terms of unit direct production costs, when the size of the batch is small, the number of components used in assembly is large and the efficiency of the F‐FAS is reasonably high. The F‐FAS prototype demonstrated the possibility of working, for certain conditions (models/components/production mix), in the F‐FAS convenience area, highlighting the achievable cost reduction versus traditional assembly systems.Originality/valueThe novelty of the study lies in the F‐FAS concept, its performances in terms of flexibility, compactness, throughput and unit direct production costs. A prototype work cell validated the concept and demonstrated its viability versus traditional assembly systems, thanks to convenience analysis.
A review of virtual reality and haptics for product assembly (part 1): rigid parts
Authors: Xia PingJun , Lopes António M. , Restivo Maria Teresa 
Published: January 2013

PurposeVirtual reality (VR) for product assembly has been studied for more than 20 years but its practical application in industry is still very much in its infancy. Haptics is a new and important interaction method for VR and a strong and growing research area, however, it still remains a virtually unknown concept for industrial application.Design/methodology/approachThis paper provides a comprehensive survey of VR and haptics for product assembly, from rigid parts to soft cables.FindingsSome new ideas and research progresses in recent years are especially investigated. First the concepts and classifications of virtual assembly are introduced and the different virtual environment systems for product assembly are discussed. Then the major research groups, typical systems and major research issues are explored in detail, treating rigid parts and soft cables separately. Lastly, the barriers preventing successful application of virtual assembly are discussed and future research directions are also summarized.Originality/valueThe paper provides an overview and analysis of VR and haptics for product assembly, including both rigid parts and soft cables.
Intelligent disassembly planning: a review on its fundamental methodology
Authors: Wang Hui , Xiang Dong , Rong Yiming , Zhang Linxuan 
Published: January 2013

PurposeThe purpose of this paper is to review the fundamental methodology and its development of intelligent disassembly planning research.Design/methodology/approachFollowing a brief introduction, this paper first discusses the fundamental problems associated with disassembly planning and analysis. And then considers the role of intelligent optimization methods in the disassembly planning field. This is followed by a summary and conclusion.FindingsMany advances have been made in computerized intelligent disassembly planning research, which is a natural evolutionary result of both traditional solving methodology and much research effort over past two decades. But as yet, some fundamental limitations are also rooted in this computational model‐based methodology.Originality/valueThe paper provides a fundamental review on the development of computerized intelligent disassembly planning research.
Identifying sources of variation in horizontal stabilizer assembly using finite element analysis and principal component analysis
Authors: Wang Hua , Ding Xin 
Published: January 2013

PurposeThe purpose of this paper is to propose a method to identify sources of variation in horizontal stabilizer assembly using FEA (finite element analysis) and PCA (principal component analysis).Design/methodology/approachThe horizontal stabilizer is assembled by long and thin‐walled deformable aluminum components. Part‐to‐part assembly of these compliant components regularly causes difficulties associated with dimensional variations. Finite element modeling and PCA are employed to predict the propagation of variation from edge to horizontal stabilizer.FindingsThe variation analysis combined with pattern fitting method is demonstrated in a case study of the horizontal stabilizer assembly system and good performance is obtained. The results have shown that the FEA and PCA method has the capability of predicting, to an acceptable degree of accuracy, the overall geometrical variations propagation of the edges and trailing edge.Originality/valueThe results of this research will enhance the understanding of the compliant components deformation in assembly, and help to systematically improve the precision control efficiency in civil aircraft assembly.
Investigating the awareness and ability of medical students in using electronic resources of the integrated digital library portal of Iran
Authors: Nemati Anaraki Leila , Babalhavaeji Fahimeh 
Published: January 2013

PurposeThe present paper aims to compare the awareness and ability of medical students in using the electronic resources of the Integrated Digital Library (IDL) portal of Iran.Design/methodology/approachThe current research involves a comparative applied survey. The survey was conducted through a structured questionnaire circulated among 300 medical students sampled from three major Iranian universities. A stratified random sampling method was used. Descriptive statistics (mean, standard deviation, average and so on) have been used to analyze the data using the Microsoft Excel software.FindingsThe awareness and utilization level of students in the three universities were lower than the average and those who are not aware of the existence of the IDL portal used general search engines to meet their information needs. The respondents admitted that their lack of awareness about the IDL was their most significant problem. Among the investigated universities, students of Tehran University of Medical Science (TUMS) used the End Note, Elsevier, Thomson, Scopus and Proquest databases most. All the students expressed the effect of the IDL on the academic activities as much as 64 percent in Iran University of Medical Science (IUMS), 72 percent in Tehran University of Medical Science (TUMS) and 66 percent in Shahid Beheshti Medical University (SBMU). The mean scores for utilization of searching strategies were 2.43, 2.89 and 2.87, respectively, for IUMS, TUMS and SBMU.Originality/valueA few attempts have been made to investigate the awareness, use and research ability of students in universities but this is the first of its kind to compare universities within the Integrated Digital Library. The paper will be useful for those in decision‐making roles and provides insight for the people responsible for IT application. It is hoped that this paper will assist administrators of the university libraries in developing a more complete understanding of students' electronic information needs and barriers.