bluuebunny/crossref_metadata_2025_split huggingface dataset:
Systematic review and meta‐analysis of the risk factors for sudden sensorineural hearing loss in adults
Authors: Lin Rui Jun , Krall Randall , Westerberg Brian D. , Chadha Neil K. , Chau Justin K. 
Published: November 2011

AbstractObjectives/Hypothesis:To review the medical literature evidence of potential risk factors for sudden sensorineural hearing loss (SSNHL) in the adult general population.Study Design:Systematic review of prospective and retrospective studies; meta‐analysis of case‐controlled studies.Methods:Three researchers independently reviewed MEDLINE (January 1, 1950–November 30, 2010), Embase (January 1, 1980–November 30, 2010), and Evidence‐Based Medicine Reviews databases in addition to conducting a manual reference search. Randomized controlled trials, prospective cohort studies, consecutive/nonconsecutive case series, and retrospective reviews in which a clear definition of SSNHL was stated were included in the study. Researchers individually extracted data regarding patient information and the presumed risk factors. Discrepancies were resolved by mutual consensus.Results:Twenty‐two articles met the inclusion criteria. Cardiovascular risk factors (smoking, increased alcohol consumption) appeared to be associated with a higher risk of developing SSNHL. A low level of serum folate may also be implicated as a risk factor. Factor V Leiden and MTHFR gene polymorphisms were found to occur more frequently in patients with SSNHL in several studies, suggesting these inherited prothrombophilic mutations could be independent risk factors of SSNHL.Conclusions:Acquired and inherited cardiovascular risk factors appeared to be associated with an increased risk of developing SSNHL.
The critical state behaviour of barodesy compared with the Matsuoka–Nakai failure criterion
Authors: Fellin Wolfgang , Ostermann Alexander 
Published: November 2011

SUMMARYBarodesy is a new approach to constitutive modelling of soil. It is based on Goldscheider's principles and maps stretching directions onto corresponding stress directions with the help of a simple exponential function. This mapping also determines a critical state surface in principal stress space. The article investigates this surface and relates it to the well‐known Matsuoka–Nakai failure criterion. It turns out that the difference between these two surfaces is negligible for practical applications. Copyright © 2011 John Wiley & Sons, Ltd.
3‐miktoarm star terpolymers using triple click reactions: Diels–Alder, copper‐catalyzed azide‐alkyne cycloaddition, and nitroxide radical coupling reactions
Authors: Gunay Ufuk Saim , Durmaz Hakan , Gungor Eda , Dag Aydan , Hizal Gurkan , Tunca Umit 
Published: November 2011

AbstractWell‐defined linear furan‐protected maleimide‐terminated poly(ethylene glycol) (PEG‐MI), tetramethylpiperidine‐1‐oxyl‐terminated poly(ε‐caprolactone) (PCL‐TEMPO), and azide‐terminated polystyrene (PS‐N3) or ‐poly(N‐butyl oxanorbornene imide) (PONB‐N3) were ligated to an orthogonally functionalized core (1) in a two‐step reaction mode through triple click reactions. In a first step, Diels–Alder click reaction of PEG‐MI with 1 was performed in toluene at 110 °C for 24 h to afford α‐alkyne‐α‐bromide‐terminated PEG (PEG‐alkyne/Br). As a second step, this precursor was subsequently ligated with the PCL‐TEMPO and PS‐N3 or PONB‐N3 in N,N‐dimethylformamide at room temperature for 12 h catalyzed by Cu(0)/Cu(I) through copper‐catalyzed azide‐alkyne cycloaddition and nitroxide radical coupling click reactions, yield resulting ABC miktoarm star polymers in a one‐pot mode. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
MANAGING THE FLOOD PULSE FOR OPTIMAL FISHERIES PRODUCTION IN THE ATCHAFALAYA RIVER BASIN, LOUISIANA (USA)
Authors: Alford J. B. , Walker M. R. 
Published: November 2011

ABSTRACTThe Atchafalaya River Basin in south‐central Louisiana (USA) comprises the largest contiguous river–floodplain swamp in North America and functions as a distributary for the Mississippi River to the Gulf of Mexico. We assessed the impact of the annual flood pulse on fisheries production at a basin‐wide scale. We modelled flood duration (days/year Butte LaRose gauge height >3.6 m) and magnitude (mean daily gauge height) against long term (1987–2009) fishery‐independent and fishery‐dependent data on largemouth bass (Micropterus salmoides), crappie (Pomoxis spp.), blue catfish (Ictalurus furcatus), buffalofish (Ictiobus spp.), gizzard shad (Dorosoma cepedianum) and crayfish (Procambarus spp.). When the Atchafalaya River at Butte LaRose is at flood stage (≥ 3.6 m gauge height) for approximately 121–157 days/year, then annual relative abundances of largemouth bass, crappie, blue catfish and buffalofish are optimized during the fall (October–December). In contrast to the tenets of the flood pulse concept, gizzard shad abundance was optimized during low flow years, when flood duration is ≤10 days/year. Annual proportion of age‐1 largemouth bass was associated positively with flow magnitude during the previous year, whereas proportions of age‐2 largemouth bass and crappie were associated positively with flood magnitude 2 years prior to the fish sample. Results for commercial production metrics were ambiguous. Crayfish catches were associated positively with flood magnitude and duration, whereas gizzard shad landings peaked at a relatively small flood magnitude level and were not related to flood duration. Blue catfish and buffalofish annual landings were not influenced by the annual flood pulse. The annual flood pulse can be managed to optimize the availability of recreational (largemouth bass and crappie) and some commercial fisheries resources (blue catfish and crayfish). We estimate that a minimum discharge of 8807 m3 s−1 is required at the river's source for approximately 4–5 months during the winter–spring months to optimize fisheries production. Copyright © 2011 John Wiley & Sons, Ltd.
Quantitative estimation of insect diversity inhabitingCalotropis procerain industrial and nonindustrial areas of West Bengal, India
Authors: Jana Gautam , Chaki K. K. , Misra K. K. 
Published: November 2011

AbstractThis paper compares the species richnesses, Bray–Curtis similarities, species diversities, evennesses, and the results of various analyses (multivariate, logarithmic series, and lognormal distribution analyses) of insects from four orders (viz., Hemiptera, Orthoptera, aculeate Hymenoptera, and Coleoptera) inhabiting a medicinal plant,Calotropis proceraamong eight sites within industrial and nonindustrial zones in the Purba Medinipur district (erstwhile Midnapore), West Bengal, India. Both cluster analysis and principal component analysis indicate an effect of industrialization on the diversity of the four insect orders. The species community at each site exhibits an almost pure lognormal distribution. Bootstrap estimation of species diversity also points to the effect of industrialization. A comparison of the values ofxandN/Sof the logarithmic series indicates a typical relationship between the species community and its diversity. The number of unique species among the eight study sites is 6 according to jackknife estimation. Beta‐diversity analysis of the samples shows the impact of industrialization on the abundances and species richness of the insects. Altogether, 16 types of analytical procedure are applied for this purpose, and their suitabilities for this kind of data set are assessed. Disturbance, probably due to industrial emissions, has changed the compositions and structures of the insect communities out to a distance of at least 6 km from the core industrial area.
Evaluation of Biodiesel Derived from Camelina sativa Oil
Authors: Soriano Nestor U. , Narani Akash 
Published: November 2011

AbstractBiodiesel derived from camelina as well as other feedstocks including palm, mustard, coconut, sunflower, soybean and canola were prepared via the conventional base‐catalyzed transesterification with methanol. Fatty acid profiles and the fuel properties of biodiesel from different vegetable oils were analyzed and tested in accordance with ASTM D6751. Camelina biodiesel contains 10–12%, 37–40%, and 48–50% saturated, monounsaturated and polyunsaturated components, respectively. Some fuel properties of camelina biodiesel are comparable to that of sunflower biodiesel including kinematic viscosity (40 °C), flash point, cloud point, cold filter plugging point, and oil stability index. However, camelina biodiesel exhibited the poorest oxidative stability, highest distillation temperature and has the highest potential to form coke during combustion, all of which are attributed to the high amounts of n‐3‐fatty acids in camelina oil. While neat camelina biodiesel may exhibit undesirable fuel properties, it is very comparable with soybean biodiesel at the B20 level.
Using Sybil for interactive comparative genomics of microbes on the web
Authors: Riley David R. , Angiuoli Samuel V. , Crabtree Jonathan , Dunning Hotopp Julie C. , Tettelin Hervé 
Published: November 2011

Abstract
Motivation: Analysis of multiple genomes requires sophisticated tools that provide search, visualization, interactivity and data export. Comparative genomics datasets tend to be large and complex, making development of these tools difficult. In addition to scalability, comparative genomics tools must also provide user-friendly interfaces such that the research scientist can explore complex data with minimal technical expertise.
Results: We describe a new version of the Sybil software package and its application to the important human pathogen Streptococcus pneumoniae. This new software provides a feature-rich set of comparative genomics tools for inspection of multiple genome structures, mining of orthologous gene families and identification of potential vaccine candidates.
Availability: The S.pneumoniae resource is online at http://strepneumo-sybil.igs.umaryland.edu. The software, database and website are available for download as a portable virtual machine and from http://sourceforge.net/projects/sybil.
Contact: driley@som.umaryland.edu
Supplementary information: Supplementary data are available at Bioinformatics online.
Serum levels of microRNAs in patients with heart failure
Authors: Goren Yaron , Kushnir Michal , Zafrir Barak , Tabak Sarit , Lewis Basil S. , Amir Offer 
Published: November 2011

AimsDiagnosis and risk stratification of patients with heart failure remain a challenge. The small non‐coding RNAs known as microRNAs regulate gene expression and seem to play an important role in the pathogenesis of heart failure. In the current study, we aim to characterize the levels of microRNAs in the sera of chronic systolic heart failure patients vs. controls and assess the possible correlation between elevation in the levels of specific microRNAs and clinical prognostic parameters in heart failure patients.Methods and resultsThe levels of 186 microRNAs were measured in the sera of 30 stable chronic systolic heart failure patients and 30 controls using quantitative reverse transcription–polymerase chain reaction (qRT–PCR). The differences in microRNA levels between the two groups were characterized, and a score, based on the levels of four specific microRNAs with the most significant increase in the heart failure group (miR‐423‐5p, miR‐320a, miR‐22, and miR‐92b), was defined. The score was used to discriminate heart failure patients from controls with a sensitivity and specificity of 90%. Moreover, in the heart failure group, there was a significant association between the score and important clinical prognostic parameters such as elevated serum natriuretic peptide levels, a wide QRS, and dilatation of the left ventricle and left atrium (r = 0.63, P = 3e‐4; P = 0.009; P = 0.03; and P = 0.01, respectively).ConclusionsElevated serum levels of specific microRNAs: miR‐423‐5p, miR‐320a, miR‐22, and miR‐92b, identify systolic heart failure patients and correlate with important clinical prognostic parameters.
A multi‐layer contextual model for recommender systems in digital libraries
Authors: Dehghani Zohreh , Afshar Ebrahim , Jamali Hamid R. , Nematbakhsh Mohammad Ali 
Published: November 2011

PurposeThe aim of this paper is to investigate contextual information that has an impact on the process of selection and decision making in recommender systems (RSs) in digital libraries.Design/methodology/approachUsing a grounded theory method of qualitative research, semi‐structured interviews were carried out with 22 information specialists, and IT and computer engineering students and professors. Data resulting from interviews were analysed in two stages using open coding, followed by axial and selective coding.FindingsThe central idea (concept) developed in this study, named scientific research ground (SRG), is an information ground users step into with scholarly purposes. Within SRG they start interacting with information systems. SRG has contexts which situate users in a range of situations while interacting with information systems. Users' characteristics such as purpose, activity, literacy, mental state, expectations, and assumptions, occupational and social status are some contexts that should be taken into account for making a recommendation.Research limitations/implicationsThis study sought to explore contextual information in the academic community and the academic contextual information cannot be generalized to RSs in other environments such as e‐commerce.Practical implicationsIdentifying and implementing contextual information in information systems can help make better recommendations as well as improve interaction between users and information systems.Originality/valueBased on the SRG idea and its contexts, a multi‐layer contextual model for a recommender system is proposed.
Medical image resources used by health care professionals
Authors: Sedghi Shahram , Sanderson Mark , Clough Paul 
Published: November 2011

PurposeMedicine is heavily dependent on images and health care professionals use medical images for clinical, educational and research purposes. This paper aims to investigate the resources used by health care professionals while searching for medical images.Design/methodology/approachThe research is based on a qualitative study that uses the Straussian version of grounded theory and involved 29 health care professionals from various health and biomedical departments working within Sheffield Teaching Hospitals NHS (National Health Service) Foundation Trust. Data collection was carried out using semi‐structured interviews and think‐aloud protocols.FindingsThe findings show that health care professionals seek medical images in a variety of visual information sources, including those found online and from published medical literature. The research also identified a number of difficulties that health care professionals face when searching for medical images in various image resources.Originality/valueThere have been few studies that investigated the image resources used by health care professionals. Thus, this study contributes to the understanding of medical image resources and information needs of health care professionals. A clear understanding of the medical image information needs of health care professionals is also vital to the design process and development of medical image retrieval systems.
How are XML‐based Marc 21 and Dublin Core records indexed and ranked by general search engines in dynamic online environments?
Authors: Hossein Farajpahlou A. , Tabatabai Faeze 
Published: November 2011

PurposeThe aim of this paper is to examine the indexing quality and ranking of XML content objects containing Dublin Core and MARC 21 metadata elements in dynamic online information environments by general search engines such as Google and Yahoo!Design/methodology/approachIn total, 100 XML content objects were divided into two groups: those with DCXML elements and those with MARCXML elements. Both groups were published on the web site www.marcdcmi.ir in late July 2009 and were online until June 2010. The web site was introduced to Google and Yahoo! search engines. The indexing quality of metadata elements embedded in the content objects in a dynamic online information environment and their indexing and ranking capabilities were compared and examined.FindingsGoogle search engine was able to retrieve fully all the content objects through their Dublin Core and MARC 21 metadata elements; Yahoo! search engine, however, did not respond at all. Results of the study showed that all Dublin Core and MARC 21 metadata elements were indexed by Google search engine. No difference was observed between indexing quality and ranking of DCXML metadata elements with that of MARCXML. The results of the study revealed that neither the XML‐based Dublin Core Metadata Initiative nor MARC 21 demonstrate any preference regarding access in dynamic online information environments through Google search engine.Practical implicationsThe findings can provide useful information for search engine designers.Originality/valueThe present study was conducted for the first time in dynamic environments using XML‐based metadata elements. It can provide grounds for further studies of this kind.
The effect of funding on academic research impact: a case study of Iranian publications
Authors: Jowkar Abdolrasoul , Didegah Fereshteh , Gazni Ali 
Published: November 2011

PurposeThis paper's aim is to examine the citation impact of Iranian funded research publications and compare it with research which received no funding.Design/methodology/approachUsing a bibliometric method, the study investigated 80,300 Iranian publications published from 2000 to 2009 in SCI‐EXPANDED to discover the percentage of funded publications and to determine the citation impact of these publications in comparison with unfunded ones.FindingsThe results of the study showed that around 12.5 per cent of Iranian publications were funded and the number of funded publications has increased dramatically over the last four years. The citation impact of funded publications was higher in almost all of the subject fields. The highest number of funded publications belonged to the universities subordinate to The Ministry of Science, Research and Technology.Originality/valueThe impact and quality of research is influenced by different factors, for instance receiving funding and research facilities. As this issue has not been previously examined in Iran, the present study determines whether funding can influence the impact of Iranian research.
The impact of New Zealand's disclosure reform on differential managerial disclosure behaviour for good news versus bad news firms
Authors: Marsden Alastair , Poskitt Russell , Wang Yinjian 
Published: November 2011

PurposeThe purpose of this paper is to investigate the impact of the introduction of New Zealand's statutory‐backed continuous disclosure regime enacted in December 2002 on the differential disclosure behaviour of New Zealand firms with good and bad earnings news.Design/methodology/approachThis paper examines the level of information disclosure, analyst forecast error and forecast dispersion, abnormal returns and abnormal volumes for firms with good and bad news earnings announcements in a sample period surrounding reforms to New Zealand's continuous disclosure regime.FindingsThe authors find evidence that the pre‐announcement information flow was poorer prior to the reform for bad news firms compared to good news firms, in terms of greater analysts' forecast dispersion and a larger abnormal price reaction to the actual earnings announcement. Second, the reform reduced the asymmetry of information flow between good and bad news firms, with the differences in analysts' forecast dispersion and abnormal price reaction dissipating after the reform.Research limitations/implicationsThe findings suggest that the reforms to New Zealand's continuous disclosure regime have reduced managers' propensity to withhold bad news and improved the quality of information provided to investors by firms with bad earnings news.Originality/valueThis study improves our understanding of the impact of disclosure reform on the behaviour of managers in a market with relatively low liquidity and less litigation risk in comparison to larger and more developed markets.
Does the change of accounting regulation on employee share options give rise to greater scope for earnings management?
Authors: Nee Ang Hong , Pinnuck Matthew 
Published: November 2011

PurposeThe purpose of this paper is to address the concern about the impact of accounting regulatory change pertaining to employee share options (ESOs) on earnings management. Following Australia's adoption of International Financial Reporting Standards (IFRS) in 2005, companies are required to recognise the fair value of ESOs as expenses. Due to inherent imprecision in the estimate of ESO's fair value, the regulatory change from disclosure to recognition was widely claimed to potentially give rise to an alternative mechanism to manage earnings. This study provides empirical evidence on whether the regulatory change leads to earnings management problems.Design/methodology/approachThis study uses the regulatory change in accounting for ESOs to provide a direct test of earnings management between disclosed versus recognised regimes for the same sample of firms. The sample consists of Australian firms from S&P/ASX300 for the period from 2003 to 2006.FindingsThe results show that, although the accounting regulatory change from disclosure to recognition may provide an alternative earnings management vehicle, there is no evidence of this occurring. There could be several reasons for this finding. First, the statistical tests lack power. Second, there are stricter audit tests on recognised amounts than on disclosed amounts. Third, given the concern of excessive pay and the close scrutiny of compensation, managers may have already understated ESO values in the disclosure regime. Finally, managers have limited time and resources and the effort involved in the adoption of IFRS in 2005 could have restricted the time available to manage earnings via the ESO reporting channel.Originality/valueThis study adds to the limited research on whether a change in accounting regulation for employee share options from disclosure to recognition gives rise to greater scope for earnings management. One reason for the lack of empirical evidence in the research is due to the problem of designing a test. Bernard and Schipper suggest that within‐firm studies have limitations for comparing the effects of recognition versus disclosure when the change is driven by an estimate becoming more reliable. A cross‐sectional study is also problematic due to self‐selection bias if firms can choose between disclosure versus recognition. This study circumvents potential design problems raised by Bernard and Schipper by setting a test using regulatory change which allows the test to be compared directly using the same company.