bluuebunny/crossref_metadata_2025_split huggingface dataset:
In Pursuit of Greatness: CEO Narcissism, Entrepreneurial Orientation, and Firm Performance Variance
Authors: Wales William J. , Patel Pankaj C. , Lumpkin G. T. 
Published: April 2013

AbstractBuilding upon the perspective that narcissism is a leadership trait with both ‘bright’ and ‘dark’ sides, the present study examines the question of whether companies led by narcissistic CEOs exhibit higher levels of entrepreneurial orientation (EO). Moreover, this research examines whether EO partially explains why narcissistic CEO‐led firms experience greater variability in firm performance. Using survey data collected from 173 CEOs, and an archival measure of firm performance variance, we find support for our model. These findings offer an improved understanding of how CEO narcissism influences performance variance, and why the firms they lead may even, at times, be viewed as on a path to success. Study implications are discussed.
Mining the Discourse: Strategizing During BHP Billiton's Attempted Acquisition of Rio Tinto
Authors: Floris Maurizio , Grant David , Cutcher Leanne 
Published: April 2013

AbstractUsing a discourse‐analytic approach, we examine the strategizing that occurred during an attempted acquisition in 2007/08 of Rio Tinto by BHP Billiton. In doing so, we contribute to discursive studies of mergers and acquisitions in two significant respects. First, we show the importance of studying how actors external to, as well as those internal to BHP, exerted influence over the acquisition process and outcome. Their influence can be attributed, in part, to their use of rhetorical strategies during the negotiation of the meanings of three constructs that were central to the acquisition discourse. Second, our study shows how these rhetorical strategies were put into effect using not only linguistic, but also non‐linguistic modes of discourse such as imagery, indicators, and location. We conclude that obtaining a comprehensive understanding of the role of discourse in relation to a strategic activity – in this case an attempted acquisition – requires consideration of the multi‐modal rhetorical strategies brought to bear by both external and internal actors.
Patterns of health behaviours predict obesity in Australian children
Authors: Magee Christopher A , Caputi Peter , Iverson Don C 
Published: April 2013

AimsThe study aims to examine whether patterns of health behaviours (based on sleep duration, physical activity, screen time and diet) were associated with obesity in Australian children.MethodsThis paper included 1833 children aged 6–7 years (51.6% male) recruited in 2006 as part of the Longitudinal Study of Australian Children. Latent class analysis was performed to identify the presence of distinct behavioural profiles on the basis of sleep duration, physical activity, screen time and eating habits. Logistic regression was performed to examine the association between the behavioural profiles and obesity assessed at baseline and 2‐year follow‐up.ResultsThree behavioural profiles, healthy (27.7%), sedentary (24.8%) and short sleepers/unhealthy eaters (47.5%), were identified. Compared with the healthy profile, the sedentary profile (odds ratio = 1.59, 95% confidence interval (1.06–2.38)) and short sleepers/unhealthy eaters (odds ratio = 1.47 (1.03–2.13)) had elevated odds of obesity at 2‐year follow‐up.ConclusionsThe present study identified distinct profiles of health behaviours in this sample of Australian children. These findings add to existing findings that many health behaviours co‐occur and that obesity interventions should target patterns of behaviours in children.
Species delimitation in the fern genus Lemmaphyllum (Polypodiaceae) based on multivariate analysis of morphological variation
Authors: WEI Xue‐Ping , ZHANG Xian‐Chun 
Published: April 2013

AbstractThe species delimitation of Lemmaphyllum, including the former segregated Lepidogrammitis in China, was considered as unresolved. Previous treatments accepted between one and 20 species. In the present study, multivariate analysis and maximum parsimony analyses were carried out on data from herbarium specimens of this genus by evaluating 24 quantitative characters and 13 qualitative characters. In total, 558 specimens representing 11 previously accepted species and one variety in China were studied. As a result, three species and two varieties were recognized, Lemmaphyllum pyriforme, L. rostratum, L. carnosum, L. carnosum var. microphyllum, and L. carnosum var. drymoglossoides. Two new combinations and seven new synonyms were introduced. An identification key and distribution maps were provided. This study also elucidated the diagnostic value of two previously ignored characters, scales at the base of stipe and laminae hydathodes.
Hypersexual Behavior in an Online Sample of Males: Associations with Personal Distress and Functional Impairment
Authors: Spenhoff Miriam , Kruger Tillmann H.C. , Hartmann Uwe , Kobs Julia 
Published: April 2013

ABSTRACT

Introduction
The population of individuals reporting hypersexual behavior is heterogeneous. Prior research has implicated the importance of personal distress and functional impairment, as both may serve as indicators of problem severity and relevance. Still, little is known about associations with distress and impairment following hypersexuality.

Aim
The purpose of this study was to investigate personal distress and functional impairment in a community sample of male self-identified “sex addicts” and to explore the associations with related variables.

Methods
Three hundred forty-nine men completed an online survey that included questions about personal distress, functional impairment, motivation for behavior change, type of hypersexual behaviors, time spent on sexual behavior, and progression of sexual urges. The survey included the Sexual Addiction Screening Test—Revised (SAST-R) core.

Main Outcome Measure
Specific survey questions about personal distress and functional impairment in six life areas were used to assess these variables. Chi-square and P-values were calculated to explore the interrelations among them.

Results
There were 75.3% (N = 253) who reported feeling distressed due to hypersexual behavior. Functional impairment in at least one life area was specified by 77.4% (N = 270), and most participants (56.2%) reported impairment regarding partner relationships. Personal distress and functional impairment in three areas were associated with a strong motivation for behavior change. Distress was associated with online pornography use, masturbation, and/or sexual contact with changing partners. The progression of sexual urges was related to distress, while time spent on sexual behavior was not. There were 92.9% of the distressed participants who scored above the SAST-R core scale cut-off, but also 59.0% of the participants with little or no distress scored in this range.

Conclusions
Results underline the particular role of problems in social or intimate relationships in association with hypersexuality. Clustering individuals with regard to their specific sexual behavior and impairment pattern seems to be promising for further research.
A Periclitoral Mass as a Cause of Persistent Genital Arousal Disorder
Authors: Bedell Sarah , Goldstein Andrew Todd , Burrows Lara 
Published: April 2013

Abstract

Introduction
Persistent genital arousal disorder (PGAD) is an intrusive and unremitting disorder for which several possible etiologies and treatments have been suggested.

Aim
To describe a woman who developed PGAD in association with a periclitoral mass, a potential physical cause of the disorder that has not been previously described in the medical literature.

Methods
A postmenopausal woman presented with 6 months of persistent, unrelenting genital arousal and clitoral pain that was unrelated to sexual stimuli. Careful examination revealed a tender, firm, mobile, left-sided mass that appeared to compress the dorsal nerve of the clitoris.

Results
Complete excision of the mass resulted in full resolution of her symptoms over several weeks.

Conclusion
Localized causes of persistent genital arousal, though rare, should be included in the differential diagnosis PGAD as detection and treatment can lead to a complete recovery.
Alexander Böhm (1971–2012)
Authors: Boos Winfried , Parkinson John S. , Jenal Urs , Vogel Jörg , Søgaard‐Andersen Lotte 
Published: April 2013

SummaryOn November 28, 2012 Alexander (Alex) Böhm, a bacterial geneticist, died at age 41, only a few months after taking up a position as an assistant professor at the LOEWE Center for Synthetic Microbiology in Marburg, Germany. Earlier in 2012 Alex had been diagnosed with an aggressive form of thyroid cancer that left him little time to live his scientific and personal dreams.
Regenerative periodontal therapy: 30 years of lessons learned and unlearned
Authors: Susin Cristiano , Wikesjö Ulf M. E. 
Published: April 2013

AbstractIn this review, we reflect upon advances and hindrances encountered over the last three decades in the development of strategies for periodontal regeneration. In this soul‐searching pursuit we focus on revisiting lessons learned that should guide us in the quest for the reconstruction of the lost periodontium. We also examine beliefs and traditions that should be unlearned so that we can continue to advance the field. This learned/unlearned body of knowledge is consolidated into core principles to help us to develop new therapeutic approaches to benefit our patients and ultimately our society.
Radiographic evaluation of modern oral implants with emphasis on crestal bone level and relevance to peri‐implant health
Authors: De Bruyn Hugo , Vandeweghe Stefan , Ruyffelaert Christian , Cosyn Jan , Sennerby Lars 
Published: April 2013

AbstractImplant stability and maintenance of stable crestal bone level are prerequisites for the successful long‐term function of oral implants, and continuous crestal bone loss constitutes a threat to the longevity of implant–supported prosthetic constructions. The prevalence/incidence and reasons for crestal bone loss are under debate. Some authors regard infection (i.e. peri‐implantitis) as the cause for virtually all bone loss, while others see crestal bone loss as an unavoidable phenomenon following surgery and implant loading. Irrespective of the cause of continuous crestal bone loss, correct usage and scientifically sound interpretation of radiographs are of utmost importance for evaluation of oral implants. The periapical radiographic technique is currently the preferred method for evaluating implant health based on bone loss, and digital radiographs allow easy standardization of the image contrast. It is suggested that baseline radiographs should be taken at the time the transmucosal part pierces the mucosal tissues and annually thereafter. The number of unreadable radiographs should be presented in scientific publications to give insights into the quality of the radiographic examination. It is suggested that not only mean values, but also the range of bone levels, should be presented to describe the proportion of implants that show continuous crestal bone loss. In the absence of other clinical symptoms, bleeding on probing around implants seems to be a weak indicator of ongoing or future loss of crestal bone. According to recent longitudinal studies on modern implant surfaces peri‐implantitis defined as ‘infection with suppuration associated with clinically significant progressing crestal bone loss’ occurs with a prevalence of less than 5 % in implants with 10 years in function.
Periodontal disease immunology: ‘double indemnity’ in protecting the host
Authors: Ebersole Jeffrey L. , Dawson Dolphus R. , Morford Lorri A. , Peyyala Rebecca , Miller Craig S. , Gonzaléz Octavio A. 
Published: April 2013

AbstractDuring the last two to three decades our understanding of the immunobiology of periodontal disease has increased exponentially, both with respect to the microbial agents triggering the disease process and the molecular mechanisms of the host engagement maintaining homeostasis or leading to collateral tissue damage. These foundational scientific findings have laid the groundwork for translating cell phenotype, receptor engagement, intracellular signaling pathways and effector functions into a ‘picture’ of the periodontium as the host responds to the ‘danger signals’ of the microbial ecology to maintain homeostasis or succumb to a disease process. These findings implicate the chronicity of the local response in attempting to manage the microbial challenge, creating a ‘Double Indemnity’ in some patients that does not ‘insure’ health for the periodontium. As importantly, in reflecting the title of this volume of Periodontology 2000, this review attempts to inform the community of how the science of periodontal immunology gestated, how continual probing of the biology of the disease has led to an evolution in our knowledge base and how more recent studies in the postgenomic era are revolutionizing our understanding of disease initiation, progression and resolution. Thus, there has been substantial progress in our understanding of the molecular mechanisms of host–bacteria interactions that result in the clinical presentation and outcomes of destructive periodontitis. The science has embarked from observations of variations in responses related to disease expression with a focus for utilization of the responses in diagnosis and therapeutic outcomes, to current investigations using cutting‐edge fundamental biological processes to attempt to model the initiation and progression of soft‐ and hard‐tissue destruction of the periodontium. As importantly, the next era in the immunobiology of periodontal disease will need to engage more sophisticated experimental designs for clinical studies to enable robust translation of basic biologic processes that are in action early in the transition from health to disease, those which stimulate microenvironmental changes that select for a more pathogenic microbial ecology and those that represent a rebalancing of the complex host responses and a resolution of inflammatory tissue destruction.
Ecosystem Changes Following Restoration of a Buckthorn‐Invaded Woodland
Authors: Larkin Daniel J. , Steffen James F. , Gentile Rachel M. , Zirbel Chad R. 
Published: April 2013

AbstractShifts in plant‐community composition following habitat degradation and species invasions can alter ecosystem structure and performance of ecosystem services. In temperate North American woodlands, invasion by aggressive Eurasian shrubs has produced dense thickets with depauperate understory vegetation and increased rates of litter decomposition and nutrient cycling, attributes that could impair storage of carbon as soil organic matter (SOM). It is important to know if such impairment has occurred and, if so, the extent to which restoration can return this service. We used an oak‐woodland restoration chronosequence in northeastern Illinois to contrast structural and functional attributes of unrestored areas dominated byRhamnus cathartica(common buckthorn) with areas that had undergone buckthorn removal and ongoing, active management for less than 1 to 14 years. With increasing age, restored areas had higher understory plant diversity and cover (p < 0.0001 and 0.005, respectively) and higher litter mass (p= 0.018). These structural differences were associated with some evidence of reduced soil erosion (p= 0.027–0.135) but greater soilCO2efflux (p= 0.020–0.033). Total particulate organic matter (POM) in the soil increased with restoration age, which was driven by increases in the slow‐turnover, mineral‐associatedSOMfraction. However, variance was high and relationships were only weakly significant (p= 0.082 and 0.083 for totalPOMand mineral‐associatedSOM, respectively). Our results suggest that, in addition to better documented biodiversity benefits, beneficial changes to ecosystem properties and processes may also occur with active, long‐term restoration of degraded woodlands.
Bent Twigs and Olive Branches: Exploring the Narratives of Dissident Israeli Jews
Authors: Attwell Katie 
Published: April 2013

AbstractThis article explores symbolic boundaries and identity‐formation of the ‘ethnonationalUs’, using narrative analysis of elevenIsraeli‐Jewish dissidents. The hegemonic nationalist discourse inIsrael –Zionism – constructs the dissidents' identities as the ‘VirtuousUs’, yet these individuals genuinely try to connect with the ‘DemonizedPalestinianOther’. I suggest that the dissidents attempt to use alternative national identity discourses to overcome symbolic boundaries. I highlight inconsistencies within individual dissidents' narratives and attribute them to the employment of multiple discourses, suggesting that some discourses fail to coherently reconcile ‘national’ history with the well‐being of the Other, whilst others repel dissidents by appearing to negate or destroy their identities. The dissidents, therefore, cannot use the available discourses to fully overcome symbolic boundaries. Only the hegemonic nationalist discourse can offer a self‐evident and compelling enunciation of the dissidents' political reality, leading one insightful dissident to conclude that there is ‘no way out’ of his dilemma.
Queering the Politics of Global Sexual Rights?
Authors: Sabsay Leticia 
Published: April 2013

AbstractTo be ‘politically queer’ at the beginning of the 1990s indicated opposition to the policing of identity and heteronormativity, and adherence to a politics that transcended liberal‐legal claims. More recently, queer activism and scholarship have largely focused on contesting the emergence of homonormative forms of nationalism and institutionalized rights‐based LGBT politics. However, to define a political intervention as queer on the condition that it explicitly adheres to one or other specific political project is possibly to overstate the case. The ‘queer signifier’ has travelled far beyond its local origins and, as a consequence, has shifted meanings in significant ways. In this essay, I consider current tensions concerning what it means to be politically queer, focusing on queer responses to the formation of sexual rights‐bearing subjects, and critically analyse the notion of sexual rights on which contemporary international mainstream sexual politics is based. Through this analysis I aim to draw attention to the entanglement of the normalization of sexual identities at a national level with current sexual neocolonial projects. Since the signifier ‘queer’ has spread in many different directions, I argue that it is precisely cultural translation that makes key alliances against both universalist and nationalist queer positions possible.
Unified approach for lesion border detection based on mixture modeling and local entropy thresholding
Authors: Abbas Qaisar , Garcia Irene Fondón , Emre Celebi M. , Ahmad Waqar , Mushtaq Qaisar 
Published: April 2013

Background/PurposeComputer‐aided design (CAD) methods are highly valuable for the analysis of skin lesions using digital dermoscopy due to low rate of diagnostic accuracy of expert dermatologist. In computerized diagnostic methods, automatic border detection is the first and crucial step.MethodIn this study, a novel unified approach is proposed for automatic border detection (ABD). A preprocessing step is performed by normalized smoothing filter (NSF) to reduce background noise. Mixture models technique is then utilized to initially segment the lesion area roughly. Afterward, local entropy thresholding is performed to extract the lesion candidate pixels and the lesion border is smoothed using morphological reconstruction.ResultsThe overallABDsystem is tested on a set of 100 dermoscopy images with ground truth. A comparative study was conducted with the other three state‐of‐the‐art methods using statistical metrics. ThisABDtechnique has the minimal average error probability rate of 5%, true detection of 92.10% and false positive rate of 6.41%.ConclusionResults demonstrate that the proposed method segments the lesion area accurately. Sample dataset and execute software are available online and can be downloaded from:http://cs.ntu.edu.pk/research.
Serum amyloid A and haptoglobin concentrations in serum and peritoneal fluid of healthy horses and horses with acute abdominal pain
Authors: Pihl Tina Holberg , Andersen Pia Haubro , Kjelgaard‐Hansen Mads , Mørck Nina Brinch , Jacobsen Stine 
Published: April 2013

BackgroundPeritoneal fluid (PF) analysis is a valuable diagnostic tool in equine medicine. Markers such as serum amyloid A (SAA) and haptoglobin (Hp) could facilitate the diagnosis of inflammatory abdominal conditions.ObjectivesThe objectives were to (1) establish reference intervals (RI) forSAAand Hp in serum andPFin healthy horses, (2) compareSAAand Hp concentrations between healthy horses and horses with colic, and (3) to assess the correlation between serum andPFconcentrations.MethodsSerum amyloid A and Hp concentrations were determined by automated assays in prospectively enrolled healthy reference horses and horses with colic.RIs were calculated, group concentrations were compared by Student'st‐test, and Pearson′s correlation for serum andPFconcentrations were determined.ResultsIn healthy horses (n = 62) the measurements forSAAwere below the detection limit (0.5 mg/L) in 94% of serum samples and 98% ofPFsamples. Horses with colic (n = 61) had statistically significantly increasedSAAconcentrations in serum (P < .0001) andPF(P = .0013). WhilePFHp concentrations were increased in horses with colic the serum concentrations of Hp were decreased (P < .0001). There was a strong correlation between paired serum andPF SAAconcentrations (n = 94,R = .72,P < .0001), whereas the correlation between paired serum andPFHp was weak (n = 94,R = .22,P = .0382). Finally, horses with colic tended to have serumSAAandPFHp concentrations above theRIs.ConclusionsWith the apparent difference between healthy horses and horses with colic and the presently establishedRIs, serumSAAandPFHp concentrations represent potential valuable diagnostic markers for inflammatory abdominal conditions in that species.
Comparison of sternal, iliac, and humeral bone marrow aspiration in Beagle dogs
Authors: Defarges Alice , Abrams‐Ogg Anthony , Foster Robert A. , Bienzle Dorothee 
Published: April 2013

BackgroundSternal bone marrow aspiration in dogs is not commonly performed as it is considered technically challenging in smaller dogs. However, the sternum is readily accessible and associated with less pain from aspiration compared with other sites.ObjectivesThe aim of the study was to investigate feasibility, ease, number of attempts, safety, and sample quality of sternal bone marrow aspirates in small dogs.MethodsBone marrow aspirates were obtained in a randomized order from 3 sites in 26 clinically healthy Beagles under general anesthesia. Samples were obtained from the sternum using one‐inch 20‐ or 22‐gauge hypodermic needles, from the right greater tubercle of the humerus, and the right iliac crest using 18‐gauge Illinois needles. The difficulty of each procedure was scored. Two types of bone marrow smears were prepared and reviewed by a pathologist unaware of site of aspiration or dog. The number of particles per slide and overall slide quality were scored. The site of aspiration and the cranial thoracic wall were evaluated at autopsy for evidence of trauma or pneumothorax.ResultsThe number of attempts and time for bone marrow aspiration were greater for ilium than for sternum or humerus, but the sternum was the easiest to aspirate. Smear quality and particle number were similar for all sites. Neither trauma at the site of aspiration nor pneumothorax were identified.ConclusionsAspiration of sternal bone marrow with hypodermic needles is feasible and safe in Beagle dogs. Samples equivalent in quality to those from the humerus or ilium can be obtained from clinically normal dogs.