bluuebunny/crossref_metadata_2025_split huggingface dataset:
Explaining social exchanges in information-based online communities (IBOCs)
Authors: Benoit (née Moeller) Sabine , Bilstein Nicola , Hogreve Jens , Sichtmann Christina 
Published: August 2016

Purpose– The purpose of this paper is to scrutinize platforms for members to exchange information by information-based online communities (IBOCs, like LinkedIn or Facebook). Because member participation is vital for IBOCs, this research aims to identify and validate factors that drive member participation.Design/methodology/approach– With reference to social exchange theory the authors developed a model of antecedents of participation in IBOCs that was tested with survey data using PLS. Because some of the results contradicted the theory, the authors examined those results in a mainly qualitative study with online community providers. These experts offered explanations that inform the discussion and managerial implications.Findings– Role clarity, provider’s responsiveness, and enjoyment all influence member participation. Contrary to theory, the cooperation of other members affects member participation negatively while a member’s ability shows no effect.Practical implications– This research has several implications for IBOC providers. Because ability does not affect participation directly, providers do not need to worry about lacking ability and can effectively target all potential members. The importance of provider responsiveness signals that IBOC providers should proactively monitor members’ compliance with social norms to lower the social risk for members. The impact of community-specific knowledge and enjoyment on participation puts emphasis on careful community design and the thoughtful implementation of new features that might enhance enjoyment, but reduce role clarity.Originality/value– Whereas most of the participation literature focusses on a dyadic relationship, the research investigates the triadic relationship in which the provider is only an enabler of exchange. Furthermore, the authors bring together two streams of the literature: the participation literature, which tends to focus on offline participation; and the online community literature, which has not yet investigated participation. This is also the first paper to investigate nonlinear effects on participation.
Engineering social media driven intelligent systems through crowdsourcing
Authors: Sykora Martin 
Published: August 2016

PurposeThe purpose of this paper is to explore implicit crowdsourcing, leveraging social media in real-time scenarios for intelligent systems.Design/methodology/approachA case study using an illustrative example system, which systematically used a custom social media platform for automated financial news analysis and summarisation was developed, evaluated and discussed. Literature review related to crowdsourcing and collective intelligence in intelligent systems was also conducted to provide context and to further explore the case study.FindingsIt was shown how, and that useful intelligent systems can be constructed from appropriately engineered custom social media platforms which are integrated with intelligent automated processes. A recent inter-rater agreement measure for evaluating quality of implicit crowd contributions was also explored and found to be of value.Practical implicationsThis paper argues that when social media platforms are closely integrated with other automated processes into a single system, this may provide a highly worthwhile online and real-time approach to intelligent systems through implicit crowdsourcing. Key practical issues, such as achieving high-quality crowd contributions, challenges of efficient workflows and real-time crowd integration into intelligent systems, were discussed. Important ethical and related considerations were also covered.Originality/valueA contribution to existing theory was made by proposing how social media Web platforms may benefit crowdsourcing. As opposed to traditional crowdsourcing platforms, the presented approach and example system has a set of social elements that encourages implicit crowdsourcing. Instances of crowdsourcing with existing social media, such as Twitter, often also called crowd piggybacking, have been used in the past; however, using an entirely custom-built social media system for implicit crowdsourcing is relatively novel and has several advantages. Some of the discussion in context of intelligent systems construction are novel and contribute to the existing body of literature in this field.
Remarkable lives: Jen Waring in conversation with Jerome Carson
Authors: Waring Jen , Carson Jerome 
Published: August 2016

Purpose
– The purpose of this paper is to provide a profile of Jen Waring.

Design/methodology/approach
– Jen provides a short biographical description of her life. She is then interviewed by Jerome.

Findings
– Jen talks about her long battle with mental health problems and what has sustained her over this time. She talks about the crucial importance of support from both loved ones and professionals, as well as medication.

Research limitations/implications
– Single case studies are of course just one person’s story. Given Jen is an academic biologist, she not only has a unique way of looking at mental illness, she can see the potential of developing approaches in the biological understanding for people experiencing mental distress.

Practical implications
– Jen’s account shows the need for long-term support for more severe mental health problems. There are no quick fixes! It also highlights the need for interventions at biological, psychological and social levels.

Social implications
– People need “somewhere to live, someone to love and something meaningful to do” (Rachel Perkins). Many sufferers do not have all three. Services may only be able to provide two of these.

Originality/value
– Accounts of mental illness recovery by academics can often provide the authors with amazing insights into the world of the mentally distressed. They can also serve as an inspiration to the many students who experience mental distress.
Understanding library users’ preferences and expectations of online help
Authors: Zhang Tao , Stonebraker Ilana , Promann Marlen 
Published: August 2016

Purpose
Online help and tutorials are an important part of library services, yet they are often studied in specific contexts and disciplines like subject-specific research guides. The objective of this study was to examine users’ common preferences and expectations of library help channels in general and online help in particular.

Design/methodology/approach
The authors conducted a qualitative survey with 45 library users. The survey asked users how they seek library help, their preferences and expectations of online help, content format and general help channels and later, a content analysis of survey responses was performed.

Findings
Results showed that survey participants have different prioritizations of library help channels. Half of the respondents preferred conceptual help that emphasizes concepts and underlying principles, while the other half preferred procedural (step-by-step) help or mixed. The survey also indicated reliance by participants on expert help, even when online help was available.

Originality/value
Based on the results, the authors identified users’ behavioral preferences, attitudes and expectations toward library help channels and online help content. They also discussed the unique challenge of creating online help for libraries, as users have a dynamic range of help-seeking preferences and mixed expectations of help content depending on the context.
OPRM1 genotype interacts with serotonin system dysfunction to predict alcohol‐heightened aggression in primates
Authors: Driscoll Carlos A , Lindell Stephen G. , Schwandt Melanie L , Suomi Stephen J , Higley J Dee , Heilig Markus , Barr Christina S 
Published: August 2016

AbstractAlthough the notion that alcohol promotes violence is widespread, not all individuals are aggressive while intoxicated. Genetic variation could be a contributing factor to individual differences in alcohol‐heightened aggression. The present study examines the effects of OPRM1C77G genotype on responses to threat in rhesus macaques under normal conditions and following alcohol administration. Prior studies have shown that a low CSF level of 5‐HIAA is a trait marker for individuals prone to escalated aggression. We wanted to examine whether the predictive value for this marker on aggression was moderated by OPRM1 genotype. Animals were administered alcohol (BAC 100–200 mg%), were provoked by a human intruder, and aggressive responses were recorded. Factor analysis was performed to generate aggressive response factors, which were then used as dependent variables for ANOVA, with OPRM1 genotype and CSF 5‐HIAA as independent variables. Factor analysis generated three factors (‘Threatening’, ‘Distance Decreasing’ and ‘High Intensity’). We found that High Intensity aggression was increased among carriers of the OPRM1 G allele, especially among individuals with low CSF levels of 5‐HIAA. Aggression in the non‐intoxicated state was predicted by 5‐HIAA, but not by genotype. This study demonstrates that OPRM1 genotype predicts alcohol‐heightened aggression in rhesus macaques with low CSF levels of 5‐HIAA. Because OPRM1 variation predicts similar effects on alcohol response and behavior in humans and macaques, this study could suggest a role for OPRM1 genotype in alcohol‐heightened aggression in humans. If so, it may be that compounds that block this receptor could reduce alcohol‐associated violence in selected patient populations.
Intravenous self‐administration of alcohol in rats—problems with translation to humans
Authors: Lê Anh D. , Kalant Harold 
Published: August 2016

AbstractAlcohol is consumed orally by humans, and oral self‐administration has been successfully modeled in laboratory animals. Over the last several years, attempts have been made to develop a procedure for the reliable intravenous (IV) self‐administration of alcohol in rodents. IV self‐administration would provide a better tool for investigating neurobiological mechanisms of alcohol reinforcement and dependence because confounding factors associated with oral self‐administration, such as variations in orosensory sensitivity to alcohol and/or its absorption, are avoided. A review of the literature shows that rats, mice and non‐human primates can initiate and maintain IV self‐administration of alcohol. However, there are 50‐ to 100‐fold interspecies differences in the reported alcohol infusion doses required. Most surprising is that the infusion dose (1–2 mg/kg) that reliably maintains IV alcohol self‐administration in rats results in total alcohol intakes of only 20–25 mg/kg/hour, which are unlikely to have significant pharmacological effects. The evidence to support IV self‐administration of such low doses of alcohol in rats as well as the potential biological mechanisms underlying such self‐administration are discussed. The minute amounts of alcohol shown to reliably maintain IV self‐administration behavior in rats challenge the relationship between their blood alcohol levels and the rewarding and reinforcing effects of alcohol.
Variation in plant functional traits across and within four species of Western Australian Banksia (Proteaceae) along a natural climate gradient
Authors: Cochrane Anne , Hoyle Gemma L. , Yates Colin J. , Neeman Teresa , Nicotra Adrienne B. 
Published: August 2016

AbstractPlant traits are fundamental components of the ecological strategies of plants, relating to how plants acquire and use resources. Their study provides insight into the dynamics of species geographical ranges in changing environments. Here, we assessed the variation in trait values at contrasting points along an environmental gradient to provide insight into the flexibility of species response to environmental heterogeneity. Firstly, we identified how commonly measured functional traits of four congeneric species (Banksia baxteri, B. coccinea, B. media and B. quercifolia) varied along a longitudinal gradient in the South Western Australian Floristic Region. This regional gradient provides significant variation in moisture, temperature and soil nutrients: soil nitrogen content decreases with declining rainfall and increasing temperature. We hypothesized that (i) the regional pattern in trait–environment associations across the species would match those observed on a global scale and (ii) that the direction and slopes of the within‐species relationships would be similar to those across species for each of the measured traits. Along the regional gradient we observed strong shifts in trait values, and cross‐species relationships followed the expected trend: specific leaf area was significantly lower, and leaf Narea and seed dry mass significantly higher, at the drier end of the rainfall gradient. However, traits within species were generally not well correlated with habitat factors: we found weak patterns among populations, either due to the small ecological gradient or perhaps because fine‐scale structuring among populations (at a micro‐evolutionary scale) was low due to high gene flow within species. Understanding how species traits shift as a result of climatic influences, both at the regional (across species) and local (within species) scale, provides insight into plant adaptation to the environment. Such studies have important applications for conservation biology and population management in the face of global change.
Serum cell death biomarker mirrors liver cancer regression after transarterial chemoembolisation
Authors: Bock B. , Hasdemir D. , Wandrer F. , Rodt T. , Manns M. P. , Schulze‐Osthoff K. , Bantel H. 
Published: August 2016

SummaryBackgroundHepatocellular carcinoma (HCC) represents an increasing health problem with limited therapeutic options. In patients with intermediate disease stage, transarterial chemoembolisation (TACE) is widely applied. Treatment response is routinely assessed by imaging techniques according to the international response evaluation criteria in solid tumours (RECIST), which consider tumour regression or additionally tumour necrosis (modified RECIST). Evaluation of treatment response, however, by these methods is time‐ and cost‐intensive and usually performed at earliest several months following TACE.AimTo investigate the suitability of novel non‐invasive cell death biomarkers for an earlier prediction of TACE response.MethodsWe analysed activation of pro‐apoptotic caspases and the proteolytic cleavage of the caspase substrate CK‐18 in liver tissues and sera from HCC patients by immunohistochemistry, a luminometric substrate assay and ELISA.ResultsBoth caspase activity and caspase‐cleaved CK‐18 fragments were elevated in HCC patients compared to healthy controls. CK‐18 serum levels significantly increased during the first 3 days and peaked at day two following TACE. Interestingly, we found significant differences in CK‐18 levels between patients with and without tumour regression. Detection of CK‐18 fragments revealed a promising performance for the early prediction of TACE response with an area under the curve value of 0.76.ConclusionsCaspase‐cleaved CK‐18 levels mirror liver cancer regression and allow an earlier prediction of TACE response. The concordance with mRECIST suggests that the detection of CK‐18 levels immediately after TACE might be used as a short‐term decision guide to continue or change HCC therapy.
Sexual objectification in women's daily lives: A smartphone ecological momentary assessment study
Authors: Holland Elise , Koval Peter , Stratemeyer Michelle , Thomson Fiona , Haslam Nick 
Published: August 2016

Sexual objectification, particularly of young women, is highly prevalent in modern industrialized societies. Although there is plenty of experimental and cross‐sectional research on objectification, prospective studies investigating the prevalence and psychological impact of objectifying events in daily life are scarce. We used ecological momentary assessment to track the occurrence of objectifying events over 1 week in the daily lives of young women (N = 81). Participants reported being targeted by a sexually objectifying event – most often the objectifying gaze – approximately once every 2 days and reported witnessing sexual objectification of others approximately 1.35 times per day. Further, multilevel linear regression analyses showed that being targeted by sexual objectification was associated with a substantial increase in state self‐objectification. Overall, individual differences had little impact in moderating these effects.
Synsedimentary broken‐foreland tectonics during the Paleogene in the Andes of NW Argentine: new evidence from regional to centimetre‐scale deformation features
Authors: Montero‐López Carolina , del Papa Cecilia , Hongn Fernando , Strecker Manfred R. , Aramayo Alejandro 
Published: August 2016

AbstractUnravelling the spatiotemporal evolution of the Cenozoic Andean (Altiplano‐Puna) plateau has been one of the most intriguing problems of South American geology. Despite a number of investigations, the early deformation and uplift history of this area remained largely enigmatic. This paper analyses the Paleogene tectono‐sedimentary history of the Casa Grande Basin, in the present‐day transition zone between the northern sector of the Puna Plateau and the northern part of the Argentine Eastern Cordillera. Our detailed mapping of synsedimentary structures records the onset of regional contractional deformation during the middle Eocene, revealing reactivation of Cretaceous extensional structures and the development of doubly vergent thrusts. This is in agreement with records from other southern parts of the Puna Plateau and the Eastern Cordillera. These observations indicate the existence of an Eocene broken foreland setting within the region, characterized by low‐lying compressional basins and ranges with spatially disparate sectors of deformation, which was subsequently subjected to regional uplift resulting in the attainment of present‐day elevations during the Neogene.
Retention of sterically and electrosterically stabilized silver nanoparticles by soil minerals
Authors: Hoppe M. , Mikutta R. , Kaufhold S. , Utermann J. , Duijnisveld W. , Wargenau E. , Fries E. , Guggenberger G. 
Published: August 2016

Engineered silver nanoparticles (Ag ENP) enter the environment and lead to concerns about their environmental effects. Clay‐sized particles are assumed to govern the environmental mobility and bioavailability of ENP, although little is known about their interaction with pedogenic minerals. The interactions of sterically (AgNM–300k, OECD standard) and electrosterically (AgCN30) stabilized Ag ENP with iron and clay minerals were investigated at a range of pH values from 4 to 7. The Ag ENP were separated from mineral suspensions by filtration at <7 and <0.45 µm and by ultracentrifugation at <0.003 µm. The colloidal stable Ag ENP were analysed by dynamic light scattering (DLS). The retention of AgNM–300k (pH adjusted to 6, Ag content ≈ 8 mg l−1) was greater than 85% for all minerals except silica and showed the tendency to increase in the following order: ferrihydrite, smectite, illite, kaolinite, goethite and allophane. The retention of AgCN30 (Ag content ≈ 8 mg l−1) was less than for AgNM–300k, except for silica at pH 6, and showed the tendency to increase in the following order: goethite, smectite, allophane, kaolinite, illite and silica. The zeta potential in the fraction <0.45 µm was not sufficient to explain the difference in stability of colloidal Ag ENP in the Ag ENP–mineral suspensions. However, the retention increased for Ag ENP with decreasing pH, most probably because of homo‐ and hetero‐aggregation, but it was not necessarily related to dissolution of the Ag ENP. In general, iron and clay minerals showed clearly the potential to retain Ag ENP under relevant environmental conditions even though the retention was incomplete.HighlightsInteraction of different Ag ENP with soil minerals was tested in short‐term batch experiments.
Ag ENP showed hetero‐aggregation with minerals, but the retention was incomplete.
Hetero‐aggregation between minerals and Ag ENP was favoured by acidic conditions (pH ≤ 5).
Iron and clay minerals showed the potential to retain Ag ENP in the environment.
Environmental processes driving anchovy and sardine distribution in a highly variable environment: the role of the coastal structure and riverine input
Authors: Bonanno A. , Barra M. , Basilone G. , Genovese S. , Rumolo P. , Goncharov S. , Popov S. , Buongiorno Nardelli B. , Iudicone D. , Procaccini G. , Aronica S. , Patti B. , Giacalone G. , Ferreri R. , Fontana I. , Tranchida G. , Mangano S. , Pulizzi M. , Gargano A. , Di Maria A. , Mazzola S. 
Published: August 2016

AbstractEngraulis encrasicolus and Sardina pilchardus stocks are highly variable in terms of recruitment, biomass and spatial distribution. Changes in habitat conditions may influence both the survival of the early life stages and the adult stages. Detailed studies on the spatial distribution and habitat selection of such species have been performed in different areas of the world, highlighting the importance of environmental processes. The present study analyzes the spatial distribution of anchovy and sardine in the Tyrrhenian Sea in relation to environmental heterogeneity. Four acoustic surveys were carried out in this area in the period 2009–2014. Analysis of the environmental dataset permitted identification, in two specific areas, of a pattern of variables driving enrichment processes and impacting on the habitat suitability of the two species. In the northern and central parts of the study area, both anchovy and sardine showed a marked preference for shallower areas characterized by lower salinity. In these areas, PCA results on an environmental dataset highlighted a strong link between primary production, particulate organic carbon, distance from the mouth of the river, salinity and depth. A less clear picture was obtained for the southern part of the Tyrrhenian sea, characterized by a narrow continental shelf, moderately complex coastline morphology and the presence of very small rivers. Most of the anchovy biomass was found to be located in enclosed areas (gulfs) under the influence of relatively small rivers. This finding, taking into account that the surveys were carried out during the anchovy spawning period, highlights for such species a positive effect of the interaction between coastal morphology and riverine input, probably favoring food supply and retention of spawning products.