bluuebunny/crossref_metadata_2025_split huggingface dataset:
The impact of knowledge management system on student performance
Authors: Jain Namita , Gupta Vikas 
Published: February 2019

Purpose
The purpose of this paper is to empirically test the role of knowledge management system (KMS) on the performance of students in higher educational institutions (HEIs).

Design/methodology/approach
Building on the extensive review of literature, the authors explored the factors of KMS to arrive at the conceptual model which was then validated using structural equation modeling. For the quantitative analysis, data were collected from undergraduate students using questionnaires distributed both through online and offline modes.

Findings
Empirical evidence supports the view that KMS have a direct and significant impact on the student performance (SP) in HEIs.

Research limitations/implications
The data are limited to 311 undergraduate students from the University of Delhi, India.

Practical implications
With the onset of national rankings framework like NAAC (National Assessment and Accreditation Council), NIRF (National Institutional Ranking Framework) and the attempt to achieve global recognition in THE (Times Higher Education), Quacquarelli Symonds and other world university rankings, the HEIs are trying hard to improve their performance comprehensively. In such a scenario, this paper provides insights into how HEIs can enhance performance of its students by harnessing KMS.

Originality/value
The current paper empirically validates the effect of KMS on the performance of students in an educational institution. While the impact of KMS on performance is measured empirically in corporations, such studies are scanty in academic centers. Moreover, while measuring the performance in HEIs using KM, the focus on ranking parameters has never been there. Such an orientation is essential as the rankings are getting wide acceptance from a global audience.
The theory of planned behavior and knowledge sharing
Authors: Nguyen Tuyet-Mai , Nham Phong Tuan , Hoang Viet-Ngu 
Published: February 2019

Purpose
The theory of planned behavior (TPB) is the most frequently used model in knowledge sharing. However, the empirical results are inconclusive on whether TPB can provide reasonable prediction of knowledge sharing behavior (KSB). This study aims to examine TPB in knowledge sharing and identify potential moderators of relationships among constructs in TPB.

Design/methodology/approach
This study conducted a systematic review and meta-analysis of 26 studies examining TPB in knowledge sharing. A meta-analytical structural equation model (MASEM) was used to test original and modified TPB models and examine potential moderators.

Findings
The results show that attitude has the strongest relationship with intention, followed by perceived behavior control and then subjective norms. Intention shows the strongest association with KSB, followed by perceived behavior control. The moderator roles of culture, economic wealth and information technology support are found in the model.

Originality/value
This study is the first attempt to provide a systematic review and MASEM in TPB in knowledge sharing.
Factors associated with relapses among patients treated for acute urticaria
Authors: Maillet Florent , Wolff Dorian , Soria Angele , Adnet Frederic , Panayotopoulos Virginie , Gobert Delphine , Lapostolle Frederic , Reuter Paul‐Georges , Ghazali Aiham , Caux Frederic , Fain Olivier , Javaud Nicolas 
Published: February 2019

AbstractThe benefit of corticosteroids in acute urticaria is controversial. Our objective was to determine the factors associated with relapses in patients presenting with acute urticaria. A retrospective observational study, including all patients with acute urticaria who visited the angioedema reference center of Academic Public Hospitals – Saint‐Antoine in Paris between January 2015 and June 2017, was conducted. The study inclusion criterion was a diagnosis of acute urticaria in an adult patient. The urticaria was spontaneous or inducible urticaria. The primary outcome was relapse at day 7 and the secondary outcome was relapse at week 6. A total of 184 patients with a first episode of acute urticaria were included. Most of the patients were female (66%) with a mean age of 42 ± 16 years. Corticosteroid administration for treatment of acute urticaria was used in 102 (55%) patients. Overall, 85 (46%) patients had relapses after less than 7 days whereas 168 (91%) patients had relapses after more than 6 weeks. In univariate analysis, the rate of corticosteroid administration was significantly higher in cases of relapse after less than 7 days. No difference in relapse rates after more than 6 weeks appeared. In the multivariate analysis, the independent factor associated with relapses after less than 7 days was the administration of corticosteroids as treatment of acute urticaria (odds ratio, 1.93; 95% confidence interval, 1.06–3.57; P = 0.03). The prevalence of corticosteroid administration for patients with acute urticaria was high. Corticosteroid administration was an independent risk factor associated with relapses after less than 7 days.
What Do Australian Economics PhDs Do?
Authors: Clements Kenneth , Si Jiawei 
Published: February 2019

AbstractAustralian universities now produce about 100 economics PhD graduates each year. Many graduates, perhaps most, aspire to an academic position. How many ultimately achieve this ambition? Relatedly, how long does the PhD take to complete, how many publications emerge from the research and how useful do graduates regard their PhD studies—was it time well spent? These questions relate to the social value of the substantial investment devoted to PhD training in economics, questions which have gone largely unaddressed up to now. The article also contains information on recent trends in graduate numbers and identifies which universities have consistently been the leading producers.
The role of knowledge of connectives in comprehension of a German narrative text
Authors: Kohnen Nicole , Retelsdorf Jan 
Published: February 2019

BackgroundConnectives, such as because or although, explicitly indicate how to semantically link individual segments of a text. Knowledge of connectives has been shown to significantly contribute to variance explanation in comprehension of English and Dutch texts, particularly amongst monolingual students and students with high metacognitive knowledge. The present study assessed the applicability of these findings to German narrative texts.MethodsStructural equation modelling was performed on a study of 456 ninth graders. Tasks mainly consisted of standardised tests.ResultsControlling for general vocabulary knowledge, reading fluency and knowledge of reading strategies, knowledge of connectives significantly and positively related to text comprehension for monolingual students, whereas there was no significant effect for bilinguals. Knowledge of connectives did not interact with knowledge of reading strategies.ConclusionsIt may be beneficial to teach deep knowledge of connectives, in combination with further language knowledge essential to understand individual elements of a text, for example, vocabulary.
Maternal and fetal outcomes in pregnancies complicated by the inherited aortopathy Loeys–Dietz syndrome
Authors: Cauldwell M , Steer PJ , Curtis S , Mohan AR , Dockree S , Mackillop L , Parry H , Oliver J , Sterrenburg M , Bolger A , Siddiqui F , Simpson M , Walker N , Bredaki F , Walker F , Johnson MR 
Published: February 2019

ObjectivePregnancies in women with Loeys–Dietz syndrome (LDS) are rare and are typically documented in case reports only. Early reports suggested high rates of maternal complications during pregnancy and the puerperium, including aortic dissection and uterine rupture, but information on fetal outcomes was very limited.DesignA retrospective cohort study.SettingEight specialist UK centres.SamplePregnant women with LDS.MethodsData was collated on cardiac, obstetric, and neonatal outcomes.Main outcome measuresMaternal and perinatal outcomes in pregnancies complicated by LDS.ResultsTwenty pregnancies in 13 women with LDS were identified. There was one miscarriage, one termination of pregnancy, and 18 livebirths. In eight women the diagnosis was known prior to pregnancy but only one woman had preconception counselling. In four women the diagnosis was made during pregnancy through positive genotyping, and the other was diagnosed following delivery. Five women had a family history of aortic dissection. There were no aortic dissections in our cohort during pregnancy or postpartum. Obstetric complications were common, including postpartum haemorrhage (33%) and preterm delivery (50%). In all, 14/18 (78%) of deliveries were by elective caesarean section, at a median gestational age at delivery of 37 weeks. Over half the infants (56%) were admitted to the neonatal unit following delivery.ConclusionWomen with LDS require multidisciplinary specialist management throughout pregnancy. Women should be referred for preconception counselling to make informed decisions around pregnancy risk and outcomes. Early elective preterm delivery needs to be balanced against a high infant admission rate to the neonatal unit.Tweetable abstractPregnancy outcomes in women with Loeys–Dietz syndrome.
State‐led wage devaluation in Southern Europe in the wake of the Eurozone crisis
Authors: AFONSO ALEXANDRE 
Published: February 2019

AbstractSouth European labour markets have gone through a substantial level of downward adjustment in wages (internal devaluation) and liberalisation in the aftermath of the Eurozone crisis. Yet, there have been differences in the extent of change between Greece, Portugal, Spain and Italy. These differences cannot be explained by the size of the economic crisis alone. While existing analyses focus on the extent of external pressure or party ideologies, this article focuses on the pre‐existing level of regulation by the state as opposed to regulation by social partners. It shows that devaluation and liberalisation were the most extensive in countries where governments possessed more tools to force down wages (statutory job protection, state regulations of collective bargaining, minimum wages), sometimes even against the will of employers. In contrast, countries with a higher level of autonomy for social partners (and fewer policy instruments available to governments to influence wages) devalued less. In some cases, the crisis led to more power to the state, rather than less. The article shows that state intervention can be a facilitator rather than a barrier to wage adjustment.
Integration of SWAT and HSPF for Simulation of Sediment Sources in Legacy Sediment‐Impacted Agricultural Watersheds
Authors: Sarkar Saumya , Yonce Hillary N. , Keeley Ann , Canfield Timothy J. , Butcher Jonathan B. , Paul Michael J. 
Published: February 2019

AbstractA total maximum daily load for the Chesapeake Bay requires reduction in pollutant load from sources within the Bay watersheds. The Conestoga River watershed has been identified as a major source of sediment load to the Bay. Upland loads of sediment from agriculture are a concern; however, a large proportion of the sediment load in the Conestoga River has been linked to scour of legacy sediment associated with historic millpond sites. Clarifying this distinction and identifying specific segments associated with upland vs. channel sources has important implications for future management. In order to address this important question, we combined the strengths of two widely accepted watershed management models — Soil and Water Assessment Tool (SWAT) for upland agricultural processes, and Hydrologic Simulation Program FORTRAN (HSPF) for instream fate and transport — to create a novel linked modeling system to predict sediment loading from critical sources in the watershed including upland and channel sources, and to aid in targeted implementation of management practices. The model indicates approximately 66% of the total sediment load is derived from instream sources, in agreement with other studies in the region and can be used to support identification of these channel source segments vs. upland source segments, further improving targeted management. The innovated linked SWAT‐HSPF model implemented in this study is useful for other watersheds where both upland agriculture and instream processes are important sources of sediment load.
Genetic Types and Metallogenic Model for the Polymetallic Copper–Gold Deposits in the Tongling Ore District, Anhui Province, Eastern China
Authors: FU Zhongyang , XU Xiaochun , HE Jun , FAN Ziliang , XIE Qiaoqin , DU Jianguo , CHEN Fang 
Published: February 2019

AbstractThe Tongling ore district is one of the most economically important ore areas in the Middle–Lower Yangtze River Metallogenic Belt, eastern China. It contains hundreds of polymetallic copper–gold deposits and occurrences. Those deposits are mainly clustered (from west to east) within the Tongguanshan, Shizishan, Xinqiao, Fenghuangshan, and Shatanjiao orefields. Until recently, the majority of these deposits were thought to be skarn‐ or porphyry–skarn‐type deposits; however there have been recent discoveries of numerous vein‐type Au, Ag, and Pb‐Zn deposits that do not fall into either of these categories. This indicates that there is some uncertainty over this classification. Here, we present the results of several systematic geological studies of representative deposits in the Tongling ore district. From investigation of the ore‐controlling structures, lithology of the host rock, mineral assemblages, and the characteristics of the mineralization and alteration within these deposits, three genetic types of deposits (skarn‐, porphyry‐, and vein‐type deposits) have been identified. The spatial and temporal relationships between the orebodies and Yanshanian intrusions combined with the sources of the ore‐forming fluids and metals, as well as the geodynamic setting of this ore district, indicate that all three deposit types are genetically related each other and constitute a magmatic–hydrothermal system. This study outlines a model that relates the polymetallic copper–gold porphyry‐, skarn‐, and vein‐type deposits within the Tongling ore district. This model provides a theoretical basis to guide exploration for deep‐seated and concealed porphyry‐type Cu (–Mo, –Au) deposits as well as shallow vein‐type Au, Ag, and Pb–Zn deposits in this area and elsewhere.
Lipid Biomarkers and Their Stable Carbon Isotopes in Ancient Seep Carbonates from SW Taiwan, China
Authors: GUAN Hongxiang , XU Lanfang , WANG Qinxian , CHEN Duofu , WU Nengyou , MAO Shengyi 
Published: February 2019

AbstractFour massive brecciated, chimney‐like, and slender pipe network carbonate samples (JA‐4, JA‐5, JX‐8 and BG‐12) were collected from southwestern Taiwan, which were suggested to have formed as a result of anaerobic oxidization of methane (AOM). Considering that the environmental conditions of the carbonates precipitation and the sources of carbon and organic matter need to be further declared, molecular fossils and compound‐specific carbon isotopic investigations of the carbonates were conducted in this study. According to lipid biomarkers of 2,6,10,15,19‐pentamethyleicosane (PMI) and squalane diagnostic to methanotrophic archaea, as well as the extremely low δ13C values (as low as –113.4‰) detected in samples JA‐4, JA‐5 and JX‐8, these carbonates were revealed to be a result of AOM. Based on the varied δ13C values of characteristic archaea biomarkers in specific samples, biogenic methane was proposed to be responsible for the formation of samples JA‐4 and JA‐5, whereas a mixed carbon source of 13C‐depleted methane and 13C‐enriched residual CO2 from methanogenesis was suggested for the carbonate of JX‐8 due to the co‐occurrence of a highly positive δ13Ccarb value (+8‰) and a moderate 13C depletion of PMI. The low content of AOM‐related biomarkers and the absence of indicators for ANME‐2 suggested that these carbonates were formed in weak seep settings. By comparison, no typical lipid biomarkers for methanotrophic archaea was detected in carbonate BG‐12. The short‐chain and long‐chain n‐alkanes accounted for 30% and 45% of all hydrocarbons, respectively, with a CPI value of 1.2, suggesting that the n‐alkanes were derived from both marine organisms and terrestrial inputs. A low thermal maturity could be revealed by the incomplete equilibrium value of the C31αβ 22S/(22S+22R) ratio (0.5), and the carbonate BG‐12 was probably deposited in a suboxic condition indicated by a value of Pr/Ph ratio (2.5).
How will Benthic Foraminifera Respond to Warming and Changes in Productivity?: A Laboratory Culture Study on Cymbaloporetta plana
Authors: KURTARKAR R. Sujata , SARASWAT Rajeev , KAITHWAR Amrata , NIGAM Rajiv 
Published: February 2019

ABSTRACTAnthropogenic activities are likely to cause global warming. Global warming will affect marine productivity and thus food availability for marine organisms. Both the seawater temperature and food availability affect benthic foraminifera, the most abundant marine calcareous microorganisms. Therefore, a laboratory culture experiment was conducted on Cymbaloporetta plana to understand the coupled effect of temperature (25°C, 27°C, 30°C) and food (102±5, 203±9, 305±14, 407±18, 508±23 diatom cells). At all temperatures, growth increased with increase in food. The specimens subjected to 27°C temperature attained the maximum growth and those subjected to 25°C were the smallest. All specimens fed with 508±23 cells reproduced, 0irrespective of temperature. Of all the specimens without food, 40% at 27°C and 20% at 25°C reproduced, whereas specimens subjected to 30°C did not reproduce. The 100% rate of reproduction at 27°C suggests that it is the optimum temperature for growth and reproduction. All the specimens at 30°C and without additional food, died, whereas at 25°C and 27°C, the mortality rate was 80% and 60%, respectively. The limited growth and reproduction with decreasing food clearly indicates that food availability also controls the growth and reproduction of shallow water benthic foraminifer C. plana. Therefore, warming coupled with decreasing productivity is likely to severely affect the growth and abundance of shallow water benthic foraminifera.
2018 APLAR axial spondyloarthritis treatment recommendations
Authors: Tam Lai Shan , Wei James Cheng‐Chung , Aggarwal Amita , Baek Han Joo , Cheung Peter P. , Chiowchanwisawakit Praveena , Dans Leonila , Gu Jieruo , Hagino Noboru , Kishimoto Mitsumasa , Reyes Heizel Manapat , Soroosh Soosan , Stebbings Simon , Whittle Samuel , Yeap Swan Sim , Lau Chak Sing 
Published: February 2019

AbstractIntroductionDespite the availability of axial spondyloarthritis (SpA) recommendations proposed by various rheumatology societies, we considered that a region‐specific guideline was of substantial added value to clinicians of the Asia‐Pacific region, given the wide variations in predisposition to infections and other patient factors, local practice patterns, and access to treatment across countries.Materials and methodsSystematic reviews were undertaken of English‐language articles published between 2000 and 2016, identified from MEDLINE using PubMed, EMBASE and Cochrane databases. The strength of available evidence was graded using the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) approach. Recommendations were developed through consensus using the Delphi technique.ResultsFourteen axial SpA treatment recommendations were developed based on evidence summaries and consensus. The first 2 recommendations cover non‐pharmacological approaches to management. Recommendations 3 to 5 describe the following: the use of non‐steroidal anti‐inflammatory drugs as first‐line symptomatic treatment; the avoidance of long‐term corticosteroid use; and the utility of conventional synthetic disease‐modifying anti‐rheumatic drugs (csDMARDs) for peripheral or extra‐articular manifestations. Recommendation 6 refers to the indications for biological DMARDs (bDMARDs). Recommendation 7 deals specifically with screening for infections endemic to Asia, prior to use of bDMARDs. Recommendations 7 to 13 cover the role of bDMARDs in the treatment of active axial SpA and include related issues such as continuing therapy and use in special populations. Recommendation 14 deals with the utility of surgical intervention in axial SpA.ConclusionThese recommendations provide up‐to‐date guidance for treatment of axial SpA to help meet the needs of patients and clinicians in the Asia‐Pacific region.
The entomopathogenic fungus Beauveria bassiana produces microsclerotia‐like pellets mediated by oxidative stress and peroxisome biogenesis
Authors: Huarte‐Bonnet Carla , Paixão Flávia R. S. , Mascarin Gabriel M. , Santana Marianela , Fernandes Éverton K. K. , Pedrini Nicolás 
Published: February 2019

SummarySeveral filamentous fungi are known to produce macroscopic pigmented hyphal aggregates named sclerotia. In recent years, some entomopathogenic fungi were reported to produce small sclerotia termed ‘microsclerotia’, becoming new potential propagules for biocontrol strategies. In this study, we described the production of microsclerotia‐like pellets by the entomopathogenic fungus Beauveria bassiana. The carbon: nitrogen ratio equal to or higher than 12.5:1 amended with Fe2+ induced the germination of conidia, producing hyphal aggregate that formed sclerotial structures in submerged liquid cultures. These aggregates were able to tolerate desiccation as they germinated and subsequently produced viable conidia. Conidia derived from microsclerotial aggregates formulated with diatomaceous earth effectively kill Tribolium castaneum larvae. Optical and transmission microscopical imaging, qPCR and spectrophotometric analysis revealed that an oxidative stress scenario is involved in conidial differentiation into microsclerotia‐like pellets, inducing fungal antioxidant response with high peroxidase activity – mainly detected in peroxisomes and mitochondria – and progress with active peroxisome proliferation. The results provide clues about B. bassiana microsclerotial differentiation and indicate that these pigmented aggregates are promising propagules for production, formulation and potentially application in the control of soil‐inhabiting arthropod pests.
Astrocyte senescence: Evidence and significance
Authors: Cohen Justin , Torres Claudio 
Published: February 2019

AbstractAstrocytes participate in numerous aspects of central nervous system (CNS) physiology ranging from ion balance to metabolism, and disruption of their physiological roles can therefore be a contributor to CNS dysfunction and pathology. Cellular senescence, one of the mechanisms of aging, has been proposed as a central component of the age dependency of neurodegenerative disorders. Cumulative evidence supports an integral role of astrocytes in the initiation and progression of neurodegenerative disease and cognitive decline with aging. The loss of astrocyte function or the gain of neuroinflammatory function as a result of cellular senescence could have profound implications for the aging brain and neurodegenerative disorders, and we propose the term “astrosenescence” to describe this phenotype. This review summarizes the current evidence pertaining to astrocyte senescence from early evidence, in vitro characterization and relationship to age‐related neurodegenerative disease. We discuss the significance of targeting senescent astrocytes as a novel approach toward therapies for age‐associated neurodegenerative disease.