bluuebunny/crossref_metadata_2025 huggingface dataset:
Your Data Is My Data: A Framework for Addressing Interdependent Privacy Infringements
Authors: Kamleitner Bernadette , Mitchell Vince
Published: July 2019

Everyone holds personal information about others. Each person’s privacy thus critically depends on the interplay of multiple actors. In an age of technology integration, this interdependence of data protection is becoming a major threat to privacy. Yet current regulation focuses on the sharing of information between two parties rather than multiactor situations. This study highlights how current policy inadequacies, illustrated by the European Union General Data Protection Regulation, can be overcome by means of a deeper understanding of the phenomenon. Specifically, the authors introduce a new phenomenological framework to explain interdependent infringements. This framework builds on parallels between property and privacy and suggests that interdependent peer protection necessitates three hierarchical steps, “the 3Rs”: realize, recognize, and respect. In response to observed failures at these steps, the authors identify four classes of intervention that constitute a toolbox addressing what can be done by marketers, regulators, and privacy organizations. While the first three classes of interventions address issues arising from the corresponding 3Rs, the authors specifically advocate for a fourth class of interventions that proposes radical alternatives that shift the responsibilities for privacy protection away from consumers.
Children’s Coping and Perceptions of Coping Efficacy After Sexual Abuse: Links to Trauma Symptoms
Authors: Campbell Claudia L. , Wamser-Nanney Rachel , Sager Julia C.
Published: July 2019

Despite an emphasis on coping following childhood sexual abuse (CSA) to reduce trauma-related symptoms, very few studies have researched the associations between sexually abused children’s coping and trauma-related difficulties, and perceived coping efficacy has been largely overlooked. The current study investigated whether children’s use and perceived efficacy of avoidant, internalized, angry, and active/social coping strategies were associated with caregiver- and child-reported posttraumatic stress symptoms (PTSS), and caregiver-reported internalizing and externalizing symptoms among 202 sexually abused children (8-12 years; M = 10.47 years, SD = 1.70 years). Children reported using approximately eight types of coping strategies ( M = 8.29, SD =2.50). Regression models indicated that internalized and angry coping were associated with child-reported PTSS. In contrast to expectations, none of the types of coping strategies were linked with caregiver’s reports of PTSS or internalizing and externalizing symptoms. Interestingly, perceived efficacy of coping was largely unrelated to symptoms, with only perceived efficacy of avoidant coping inversely related to child-reported PTSS. Perceived efficacy was not tied to caregiver’s reports of children’s symptoms. Coping strategies may be associated with children’s, but not caregiver’s, reports of children’s trauma-related difficulties. Furthermore, perceived efficacy of coping strategies may also be largely unrelated to children’s symptoms, or children may have limited insight regarding the efficacy of their coping strategies. To further inform trauma-focused interventions that support effective long-term coping, future research should investigate which coping strategies children perceive to be efficacious, as well as potential reasons why.
Gender Goals: Defining Masculinity and Navigating Peer Pressure to Engage in Sexual Activity
Authors: Duckworth Kiera D. , Trautner Mary Nell
Published: July 2019

A significant part of hegemonic masculinity is proving one’s heterosexuality though sexual experiences. Peer pressure to conform is particularly acute for adolescent boys and young men. We analyze interviews with 87 boys in middle school, high school, and college about how their masculinity goals and subsequent achievement of those goals influence their navigation of pressure to engage in sexual relations with girls and women to “prove” themselves. Our findings show that, while boys and young men recognize dominant notions of hegemonic masculinity, most do not subscribe to those uncritically. Rather, they struggle to balance personal ideas about masculinity with consistent pressure from others to demonstrate their heterosexuality. As a result, they employ various strategies to negotiate such pressures, including avoidance, acceptance, and outright rejection of this particular expectation. These strategies, however, ultimately contribute to a broader gender culture among adolescents in which expectations and privileges associated with hegemonic masculinity that dominate U.S. culture remain largely unchallenged.
Constructing Eroticized Latinidad: Negotiating Profitability in the Stripping Industry
Authors: Khan Cristina
Published: July 2019

Through the analysis of an 18-month ethnography at an exotic dance club located in the Northeastern United States (referred to as Playpen), I uncover how Latina exotic dancers manage their participation in exotic dance by deploying constructions of Latinidad as embodied cues. I focus on Playpen’s weekly event, “Latina Night,” to demonstrate how racialized, sexualized, and gendered constructs relative to Latinidad are produced and regulated in this exotic dance setting. Study participants draw on embodied markers to negotiate how their bodies are read. Those markers include nationality-based appeals, time elapsed since migration, and the ability to express constructions of Latinidad through dance performance. I draw on intersectionality as a conceptual tool, filtered through a sensibility to Latina/o/x lives and experiences, to analyze the nuances of racialization as experienced by Latinas. This approach destabilizes the U.S. black–white racial binary and opens intersectionality to a more nuanced understanding of the production of Latinidad. By approaching racialization as an embodied phenomenon, I elucidate how bodily markers, beyond skin color, become imbued with racialized meaning and condition racialized erotic capital. No less important is how participants draw on racialized, gendered, and sexualized tropes to benefit racialized erotic capital.
Gender and Online Politics: Digital Media as Friend and Foe in Times of Change
Authors: Boulianne Shelley , Koc-Michalska Karolina , Vedel Thierry
Published: July 2019

This volume highlights gender issues related to using digital media for online politics. The submissions offer a balanced perspective about the role of digital media; this tool can be used for social change or to limit social change. The submissions use qualitative and quantitative analyses of digital trace data and survey data to present a rich perspective on gender and online politics. The collection offers a cross-national perspective including research on China, Germany, Norway, Spain, the United States, and the United Kingdom.
Occupational Well-Being in Sexual Assault Victims and Survivors
Authors: Wadsworth Pamela , Krahe J. A. Eve , Allen Elissa
Published: July 2019

Purpose: While researchers have established that sexual assault may adversely affect successful employment and academic achievement, little is known about the barriers and facilitators of occupational well-being from the perspective of sexual assault survivors. This study assessed the barriers and facilitators of occupational well-being. Design: Constructivist grounded theory. Method: Digitally recorded, semistructured interviews were used to collect data. Data were collected from 22 adult female sexual assault survivors. Analysis consisted of coding, creation of data matrices, and within and across case analysis. Findings: Theoretical saturation was achieved after interviews with 22 participants. Barriers to occupational well-being were mental health symptoms and diagnoses, substance abuse, inflexible attendance policies, and workplace bullying. Facilitators to occupational well-being were personal coping strategies, and organizational and social support. Conclusions: Sexual assault has significant effects on the occupational well-being of women. The work or academic environment can exacerbate the harms of sexual assault or facilitate healing in sexual assault survivors. To facilitate the occupational well-being of sexual assault survivors, workplaces and academic institutions can adopt a trauma-informed approach, create policies that allow for time off to deal with sequela of sexual assault, implement anti-bullying programs, and make resources for gendered violence available.
Riders on the Storm: Workplace Solidarity among Gig Economy Couriers in Italy and the UK
Authors: Tassinari Arianna , Maccarrone Vincenzo
Published: July 2019

In light of the individualisation, dispersal and pervasive monitoring that characterise work in the ‘gig economy’, the development of solidarity among gig workers could be expected to be unlikely. However, numerous recent episodes of gig workers’ mobilisation require reconsideration of these assumptions. This article contributes to the debate about potentials and obstacles for solidarity in the changing world of work by showing the processes through which workplace solidarity among gig workers developed in two cases of mobilisation of food delivery platform couriers in the UK and Italy. Through the framework of labour process theory, the article identifies the sources of antagonism in the app-mediated model of work organisation and the factors that facilitated and hindered the consolidation of active solidarity and the emergence of collective action among gig workers. The article emphasises the centrality of workers’ agential practices in overcoming constraints to solidarity and collective action, and the diversity of forms through which solidarity can be expressed in hostile work contexts.
Blue Solidarity: Police Unions, Race and Authoritarian Populism in North America
Authors: Thomas Mark P , Tufts Steven
Published: July 2019

With a focus on police unions in the United States and Canada, this article argues that the construction of ‘blue solidarity’, including through recent Blue Lives Matter campaigns, serves to repress racial justice movements that challenge police authority, acts as a counter to broader working class resistance to austerity and contributes to rising right-wing populism. Specifically, the article develops a case study analysis of Blue Lives Matter campaigns in North America to argue that police unions construct forms of ‘blue solidarity’ that produce divisions with other labour and social movements and contribute to a privileged status of their own members vis-a-vis the working class more generally. As part of this process, police unions support tactics that reproduce racialised ‘othering’ and that stigmatise and discriminate against racialised workers and communities. The article concludes by arguing that organised labour should maintain a critical distance from police unions.
Dynamic response of a size-dependent nanobeam to low velocity impact by a nanoparticle with considering atomic interaction forces
Authors: Noroozi Mohammad , Ghadiri Majid , Zajkani Asghar
Published: July 2019

In the present paper, low velocity impact response of a size-dependent nanobeam in a thermal field with uniform temperature distribution has been investigated. The van-der Waals interaction force based on description of Lennard–Jonses is considered as the impact force between nanoparticle and nanobeam. According to third-order shear deformation beam theory, the governing equations are obtained using Hamilton's principle based on nonlocal strain-gradient theory. The Galerkin's method was adopted to solve the differential equations of nanobeam with simply supported and clamped boundary conditions. Afterward, the system of time-dependent equations by applying the fourth-order Runge–Kutta method is solved. The parametric study is presented to examine the effect of particle radius, initial velocity, temperature environment, the nonlocal parameter, and the length-scale parameter on the impact response of nanobeam.
A review of the artificial neural network surrogate modeling in aerodynamic design
Authors: Sun Gang , Wang Shuyue
Published: July 2019

Artificial neural network surrogate modeling with its economic computational consumption and accurate generalization capabilities offers a feasible approach to aerodynamic design in the field of rapid investigation of design space and optimal solution searching. This paper reviews the basic principle of artificial neural network surrogate modeling in terms of data treatment and configuration setup. A discussion of artificial neural network surrogate modeling is held on different objectives in aerodynamic design applications, various patterns of realization via cutting-edge data technique in numerous optimizations, selection of network topology and types, and other measures for improving modeling. Then, new frontiers of modern artificial neural network surrogate modeling are reviewed with regard to exploiting the hidden information for bringing new perspectives to optimization by exploring new data form and patterns, e.g. quick provision of candidates of better aerodynamic performance via accumulated database instead of random seeding, and envisions of more physical understanding being injected to the data manipulation.
Just being and being bad: Female friendship as a refuge in neoliberal times
Authors: Martinussen Maree , Wetherell Margaret , Braun Virginia
Published: July 2019

Those investigating neoliberal and postfeminist subjectivities have argued that continuous self-improvement and self-surveillance have become everyday life strategies for many women. It has been suggested that these strategies have also re-organised women’s friendships, so that this is now a significant field of practice for women to support each other in the anxiety provoking work of self-perfection. Using talk-data from a sample of women in Aotearoa New Zealand we explore these claims, and report on how our sample of women describe their friendships, not so much as a site for developing and perfecting the neoliberal self, but as a place of reprieve from conventions of relentless productivity – a site of ease, escape and refuge. We are not suggesting that accounts of postfeminist, neoliberal subjectivities are inaccurate or that these modes of self-making are not relevant to our participants, but that the discursive environment of women’s close friendships is plural, combining neoliberal emphases with potentially subversive counter-narratives.
Joint nested frailty models for clustered recurrent and terminal events: An application to colonoscopy screening visits and colorectal cancer risks in Lynch Syndrome families
Authors: Choi Yun-Hee , Jacqmin-Gadda Helene , Król Agnieszka , Parfrey Patrick , Briollais Laurent , Rondeau Virginie
Published: July 2019

Joint models for recurrent and terminal events have not been yet developed for clustered data. The goals of our study are to develop a statistical framework for modelling clustered recurrent and terminal events and to perform dynamic predictions of the terminal event in family studies. We propose a joint nested frailty model for colonoscopy screening visits and colorectal cancer onset in Lynch Syndrome families. The screening and disease processes could each depend on individuals' screening history and other measured covariates and be correlated within families; our approach allows for familial correlations to affect both the visit process and the terminal event and the dependence between the two processes is specified through frailty distributions. We provide dynamic predictions of colorectal cancer risk for an individual conditional on his/her own screening history, his/her family history of screening and disease and other important clinical covariates. We apply our model to 18 Lynch Syndrome families from Newfoundland for individualized dynamic predictions of colorectal cancer risks. We demonstrate that the screening visits are non-ignorable for estimating the disease risks, and the joint nested frailty model improves dynamic prediction accuracies compared to existing joint frailty models after accounting for familial and individual screening and cancer histories.
Return to bowel screening after a false-positive faecal immunochemical test in BowelScreen (the National Bowel Screening Programme in Ireland)
Authors: Ch’ng Brandon Xian , Mooney Therese , O’Donoghue Diarmuid , Fitzpatrick Patricia
Published: July 2019

Objective

Little research exists on what predicts individual return to screening after a false-positive faecal immunochemical test in a population bowel screening programme. We aimed to quantify the impact of false-positive faecal immunochemical test in the first round of screening on re-attendance in BowelScreen, the National Bowel Screening Programme in Ireland.

Methods

A retrospective cohort study was conducted. False-positivity was defined as a positive faecal immunochemical test with subsequent colonoscopy showing no evidence of malignancy or surveillance requirement. In those with a false-positive faecal immunochemical test, logistic regression was used to predict repeat participation in the second round.

Results

Of 196,149 individuals who attended the first screening round, 108,075 were eligible and re-invited in the second round, and 93,971 accepted the invitation (86.9%). Second round uptake was higher in faecal immunochemical test-negative individuals compared with those having false-positive results (87.5% vs. 73.1%; p < 0.001). Older age (odds ratio (OR) 0.75; 95% confidence interval (CI) 0.60–0.94), computed tomography colonography (unsuitability/failed colonoscopy) (OR 0.40; 95% CI 0.21–0.73), and longer duration from screening invitation to faecal immunochemical test result (OR 0.991; 95% CI 0.9872–0.995) were predictors of non-re-attendance in the next screening round.

Conclusion

There is a significant reduction in re-attendance rates for individuals with false-positive faecal immunochemical test results. The letter sent following a negative colonoscopy is being reviewed to ensure that it provides adequate encouragement to re-attend. There are roles for screening promotion and for Gastroenterologists and Advanced Nurse Practitioners to emphasize the importance of regular faecal immunochemical tests after a negative colonoscopy.
Validation of a real-time PCR assay for high-throughput detection of Avibacterium paragallinarum in chicken respiratory sites
Authors: Clothier Kristin A. , Stoute Simone , Torain Andrea , Crossley Beate
Published: July 2019

Avibacterium paragallinarum is the causative agent of infectious coryza, a highly contagious respiratory disease in chickens. Given its fastidious nature, this bacterium is difficult to recover and identify, particularly from locations colonized by normal bacterial flora. Standard PCR methods have been utilized for detection but are labor-intensive and not feasible for high-throughput testing. We evaluated a real-time PCR (rtPCR) method targeting the HPG-2 region of A. paragallinarum, and validated a high-throughput extraction for this assay. Using single-tube extraction, the rtPCR detected 4 A. paragallinarum (ATCC 29545T and 3 clinical) isolates with a limit of detection (LOD) of 10 cfu/mL and a PCR efficiency of 89–111%. Cross-reaction was not detected with 33 non– A. paragallinarum, all close relatives from the family Pasteurellaceae. Real-time PCR testing on extracts of 66 clinical samples (choana, sinus, or trachea) yielded 98.2% (35 of 36 on positives, 30 of 30 on negatives) agreement with conventional PCR. Duplicate samples tested in a 96-well format extraction in parallel with the single-tube method produced equivalent LOD on all A. paragallinarum isolates, and 96.8% agreement on 93 additional clinical samples extracted with both procedures. This A. paragallinarum rtPCR can be utilized for outbreak investigations and routine monitoring of susceptible flocks.
Research at Work: Systematic Reviews and Meta-Analyses
Authors: Jaggers Jeremiah W. , Kondrat David
Published: July 2019

This article provides an overview of the systematic review and the meta-analysis. These tools provide a comprehensive picture of current research. What follows is an abridged explanation of each of these techniques. This approach is intended to provide a fundamental overview for social work practitioners, so that they may more readily access important research, while minimizing the time spent doing so.
Exploring End-of-Life Care Team Communication: An Interprofessional Simulation Study
Authors: Lippe Megan , Stanley Alexandra , Ricamato Allison , Halli-Tierney Anne , McKinney Robert
Published: July 2019

Effective team communication is necessary for the provision of high-quality health care. Yet, recent graduates from diverse health-care disciplines report inadequate training in communication skills and end-of-life care. This study explored the impact of a withdrawal of life-sustaining measures interprofessional simulation on team communication skills of students representing medicine, nursing, and social work. The 3-phase simulation required teams to communicate with the patient, family, and one another in the care of a seriously ill patient at the end of life. Team communication in the filmed simulations was analyzed via the Gap-Kalamazoo Communication Checklist. Results revealed fair to good communication across the 9 communication domains. Overall team communication was strongest in “shares information” and lowest in “understands the patient’s and family’s perspective” domains. Field notes revealed 5 primary themes— Team Dynamics, Awkwardness, Empathy is Everything, Build a Relationship, and Communicating Knowledge When You Have It—in the course of the data analysis. Logistical challenges encountered in simulation development and implementation are presented, along with proposed solutions that were effective for this study. This simulation provided an opportunity for interprofessional health-care provider students to learn team communication skills within an end-of-life care context.
An investigation into serotonergic and environmental interventions against depression in a simulated delayed reward paradigm
Authors: Porr Bernd , Miller Alice , Trew Alex
Published: July 2019

The disruption of the serotonergic (5HT) system has been implicated in causing major depression and the standard view is that a lack of serotonin is to blame for the resulting symptoms. Consequently, pharmacological interventions aim to increase serotonin concentration in its target areas or stimulating excitatory 5HT receptors. A standard approach is to use serotonin reuptake inhibitors (SSRIs) which cause a higher accumulation of serotonin. Another approach is to stimulate excitatory serotonin receptors with psychedelic drugs. This article compares these two approaches by first setting up a system-level limbic system model of the relevant brain areas and then modelling a delayed reward paradigm which is known to be disrupted by a lack of 5HT. Central to our model is how serotonin changes the response characteristics of decision-making neurons where low levels of 5HT allow small signals to pass through, whereas high levels of 5HT create a barrier for smaller signals but amplifying the larger ones. We show with both standard behavioural simulations and model checking that SSRIs perform significantly better against interventions with psychedelics. However, psychedelics might work better in other paradigms where a high level of exploration is beneficial to obtain rewards.
Evaluation of Acute Kidney Injury Associated With Anticancer Drugs Used in Gastric Cancer in the Japanese Adverse Drug Event Report Database
Authors: Uchida Mayako , Kondo Yuki , Suzuki Shinya , Hosohata Keiko
Published: July 2019

Background: Development of acute kidney injury (AKI) depends on the severity of renal dysfunction, clinical setting, comorbid factors, and geographical location. Gastric cancer is one of the deadliest malignancies worldwide, and its incidence is significantly high in Japan. Objective: We analyzed the rank-order of the association of anticancer agents for gastric cancer with AKI using a spontaneous reporting system database, the Japanese Adverse Drug Event Report database. Methods: We performed a retrospective pharmacovigilance disproportionality analysis using the adverse event reports submitted to the Pharmaceuticals and Medical Devices Agency between April 2004 and March 2017. Results: Anticancer drug-related AKI was common in patients in their 60s and 70s (39.2% and 43.2%, respectively). AKI occurred most frequently within 1 month after anticancer drug administration. The signals of AKI were reported after treatment with S-1 (tegafur/gimeracil/oteracil), cisplatin (CDDP), and capecitabine, with significant adjusted reporting odds ratios (95% CI) of 1.50 (1.09-2.07), 3.43 (2.48-4.74), and 1.82 (1.15-2.90), respectively. CDDP-induced AKI was more likely to occur in patients who were male, hypertension, or diabetes mellitus. Conclusion and Relevance: This study showed that most AKI cases were related to S-1 and/or CDDP adjuvant chemotherapy for gastric cancer treatment. The data also clarified that AKIs occurred within 1 month and that their clinical outcomes were more severe than previous reports of drug-induced AKI in general medicine. Our study provides useful information to minimize the risks of administration to patients at high risk for S-1 and/or CDDP containing chemotherapy–induced AKI.
Predictors of Treatment Failure Following De-escalation to a Fluoroquinolone in Culture-Negative Nosocomial Pneumonia
Authors: Bultas Amanda C. , Bery Amit I. , Deal Eli N. , Hartmann Aaron P. , Richter Sara K. , Call William B.
Published: July 2019

Background: Little evidence exists for de-escalation of nosocomial pneumonia therapy without positive cultures. Objective: The purpose of this study was to identify potential predictors of treatment failure following de-escalation to a fluoroquinolone in culture-negative nosocomial pneumonia. Methods: The study involved a single-center, retrospective cohort of patients admitted with diagnosis of nosocomial pneumonia and positive chest radiography who received at least 24 hours of fluoroquinolone monotherapy following at least 24 hours of appropriate empirical antibiotics. Treatment failure was defined using a composite of all-cause death within 30 days of discharge, treatment re-escalation, or readmission for pneumonia within 30 days of discharge. The Cox proportional hazards model was used to analyze predictors of treatment failure. Duration of empirical antibiotics and significant univariable exploratory predictors were included in multivariable analysis. Results: Of 164 patients, 23 (14%) failed de-escalation. Duration of empirical antibiotics (68.5 ± 32.1 vs 65.8 ± 35 hours) was not associated with treatment failure in univariable (Hazard Ratio [HR] = 1.002 [95% CI = 0.991-1.013]) or multivariable analyses (HR = 1.003 [95% CI = 0.991-1.015]). Significant exploratory predictors on univariable analysis included active cancer, intensive care unit (ICU) admission at empirical initiation, APACHE II score, and steroid use ≥20-mg prednisone equivalent. ICU admission at empirical initiation (HR = 2.439 [95% CI = 1.048-5.676]) and steroid use ≥20-mg prednisone equivalent (HR = 2.946 [95% CI = 1.281-6.772]) were associated with treatment failure on multivariable analysis. Conclusion and Relevance: Duration of empirical antibiotics does not appear to influence failure of de-escalation to fluoroquinolone monotherapy in culture-negative nosocomial pneumonia.
Identification of Risk Factors for Refractory Status Epilepticus
Authors: Tatro Hayley A. , Hamilton Leslie A. , Peters Cassey , Rowe A. Shaun
Published: July 2019

Objective: The objective of this study is to identify risk factors for the development of refractory status epilepticus (RSE). Methods: This was an IRB-approved, retrospective case control study that included patients admitted with status epilepticus between August 1, 2014, and July 31, 2017. Cases were defined as those with RSE, and controls were those who did not develop RSE. A bivariate analysis was conducted comparing those with RSE and those without RSE. A stepwise logistic regression model was constructed predicting for progression to RSE. Risk factors for progression to RSE were extrapolated from this model. Results: A total of 184 patients met inclusion criteria for the study (99 controls and 49 cases). After adjusting for covariates in the logistic regression, patients with convulsive seizures had a lower odds of developing RSE (odds ratio [OR] = 0.375; 95% CI = 0.148 to 0.951; P = 0.0388). Treatment with benzodiazepines plus levetiracetam had a higher odds of developing RSE (OR = 3.804; 95% CI = 1.523 to 9.499; P = 0.0042). Conclusion and Relevance: This study found that patients with convulsive seizures had a lower odds of developing RSE. In addition, patients treated with benzodiazepines and levetiracetam had a higher odds of developing RSE. This information can be used to potentially identify patients at higher risk of developing RSE, so that treatment can be modified to reduce morbidity and mortality. These results may warrant further investigation into the effectiveness of levetiracetam as a first-line agent for the treatment of SE.
Characteristics of Negative and Positive Mental Health Among Nursing Students in the United States
Authors: McDermott Ryon C. , Fruh Sharon M. , Williams Susan , Hauff Caitlyn , Sittig Scott , Wright Theresa , Riley Bettina , Swanzy Debra , Graves Rebecca J. , Hall Heather
Published: July 2019

BACKGROUND: Researchers have documented significant psychological problems among nursing students, but findings have been inconclusive as to whether nursing students are “at-risk” for mental health problems compared with their non-nursing peers. AIMS: This study examined whether nursing students have unique mental health characteristics compared with students from other professions. METHOD: Undergraduates ( N = 18,312; nursing n = 1,399) were selected from the 2016-2017 National Healthy Minds Study. Participants completed the Patient Health Questionnaire-9 (depression), the Generalized Anxiety Disorder-7 (anxiety), and the Flourishing Scale (positive psychology). RESULTS: Nursing students were equally likely to screen positive for depression and anxiety compared with their non-nursing peers. However, when controlling for gender, age, and year in school, multigroup structural equation modeling analyses revealed that female (but not male) nursing students reported significantly higher levels of specific anxiety symptoms and certain psychological strengths than female students from other professions. Nursing students are equally likely to screen positive for depression or anxiety as their non-nursing peers; however, anxiety disorders may reflect symptom profiles unique to nursing students. CONCLUSIONS: Findings suggest a need for tailored screening and interventions to reduce mental health problems and harness psychological strengths unique to nursing students.
Accurate fracture analysis of electrically permeable/impermeable cracks in one-dimensional hexagonal piezoelectric quasicrystal junction
Authors: Yang Zhenting , Yu Xiong , Xu Wang , Xu Chenghui , Zhou Zhenhuan , Xu Xinsheng
Published: July 2019

An accurate fracture analysis of a multi-material junction of one-dimensional hexagonal quasicrystals with piezoelectric effect is performed by using Hamiltonian mechanics incorporated in the finite element method. Two idealized electrical assumptions, including electrically permeable and impermeable crack-face conditions, are considered. In the Hamiltonian system, the analytical solutions to the multi-material piezoelectric quasicrystal around the crack tip (singular domain) are obtained and expressed in terms of symplectic eigensolutions. Therefore, the large number of nodal unknowns in the singular domain is reduced into a small set of undetermined coefficients of the symplectic series. The unknowns in the non-singular domain remain unchanged. Explicit expressions of phonon stresses, phason stresses, and electric displacement in the singular domain and newly defined fracture parameters are achieved simultaneously. Comparisons are presented to verify the proposed approach and very good agreement is reported. The key influencing parameters of the crack are discussed in detail. The effects of electrical assumptions and positions of the crack on the fracture parameters are discussed in detail.
Isometric bending requires local constraints on free edges
Authors: Guven Jemal , Müller Martin Michael , Vázquez-Montejo Pablo
Published: July 2019

While the shape equations describing the equilibrium of an unstretchable thin sheet that is free to bend are known, the boundary conditions that supplement these equations on free edges have remained elusive. Intuitively, unstretchability is captured by a constraint on the metric within the bulk. Naïvely one would then guess that this constraint is enough to ensure that the deformations determining the boundary conditions on these edges respect the isometry constraint. If matters were this simple, unfortunately, it would imply unbalanced torques (as well as forces) along the edge unless manifestly unphysical constraints are met by the boundary geometry. In this article, we identify the source of the problem: not only the local arc-length but also the geodesic curvature need to be constrained explicitly on all free edges. We derive the boundary conditions which follow. In contrast to conventional wisdom, there is no need to introduce boundary layers. This framework is applied to isolated conical defects, both with deficit as well, but more briefly, as surplus angles. Using these boundary conditions, we show that the lateral tension within a circular cone of fixed radius is equal but opposite to the radial compression, and independent of the deficit angle itself. We proceed to examine the effect of an oblique outer edge on this cone perturbatively demonstrating that both the correction to the geometry as well as the stress distribution in the cone kicks in at second order in the eccentricity of the edge.
The Nature of Organizing: A Relational Approach to Understanding Business Sustainability
Authors: Good Jason , Thorpe Andrea
Published: July 2019

Organizational and natural phenomena mutually constitute one another through time and across space. Yet the current management literature that involves both organizational and natural phenomena is piecemeal and dualistic. In being piecemeal, domains are disconnected, and in being dualistic, they tend to assume that organizations and nature are separate and opposing. This article addresses these issues by developing an analytical framework of the relations that mutually constitute organizational and natural phenomena, while couching the effort in the burgeoning sustainability management literature. The framework development process produces four types of relations that mutually constitute organizational and natural phenomena: here-now, here-then, there-now, and there-then relations. The article then uses this framework to connect disparate domains of the organizational literature that involve natural phenomena. Ultimately, the article suggests an overarching proposition for further research, as well as practical questions for organizations to consider in order to better manage their relations with the natural world.
Analysis of Three Sign Management Program Case Studies
Authors: Machado Patricia , Rasdorf William
Published: July 2019

Traffic signs play a major role on the national highway system because they provide users with important information such as warnings, regulations, and directions. To ensure sign visibility at night, the Manual on Uniform Traffic Control Devices (MUTCD) requires transportation agencies to meet minimum sign retroreflectivity levels through a sign maintenance program. To better understand current trends, the researchers conducted an extensive literature search that showed that expected sign life and nighttime inspection are the most used methods, followed by blanket replacement. The literature does not typically discuss how these methods are implemented. Thus, the research team also contacted three of the four largest state-maintained highway systems in the United States (North Carolina, Virginia, and South Carolina) to discuss sign maintenance programs, implementation issues, and best practices. The authors describe in this article the findings and conclusions drawn from these case studies that may help other agencies improve their sign maintenance practices.
eHealth Interventions for Fruit and Vegetable Intake: A Meta-Analysis of Effectiveness
Authors: Rodriguez Rocha Norma Patricia , Kim Hyekyeong
Published: July 2019

Background. An adequate intake of fruits and vegetables (FVI) has shown benefits for reduced risk of manifesting chronic diseases. Thus, development of effective interventions to promote FVI is paramount. Aim. To assess the effectiveness of eHealth interventions for FVI targeted to healthy population, in comparison with control groups, and identify the moderators contributing to their effectiveness. Method. A database search was conducted in April 2016 and July 2018 using MEDLINE, PsycINFO, ERIC, Google Scholar, SciELO, and RISS, yielding 19 eligible studies. Risk of bias was assessed using Cochrane’s Risk of Bias Tool. Random-effects model was used to calculate effect sizes (ES) by weighted standardized mean differences. Results. This meta-analysis includes 19 studies and 6,894 participants. The most common eHealth tool used was Internet-based interventions ( n = 10). Most of studies were conducted in adults ( n = 11), followed by children ( n = 4), and adolescents ( n = 4). The minimum number of behavior change techniques (BCTs) used was one, and the maximum seven. The overall ES was small (0.26, p < .001), favoring eHealth interventions. The between-studies heterogeneity was large ( I2 = 62.77%, p < .001). Subgroup analyses showed that the components with larger ES were tailored interventions (0.27, p < .001), computer-based interventions (0.44, p < .001), and use of ≥7 BCTs (0.42, p < .001). Discussion. All studies showed a positive ES favoring interventions. Large heterogeneity could be explained in part by the number of BCTs and type of eHealth tool used. Nonetheless, more concrete evidence regarding other intervention components effectiveness was limited by small sample size. Conclusion. The use of eHealth tools for the improvement of FVI showed to be more effective compared with nonintervention and interventions not using these technologies. Nonetheless, more research is needed to determine the specific combination of intervention components that could translate into larger effectiveness.
Pathoanatomical Lesions in Placentas With Excessively Hypercoiled Umbilical Cords: Frequent Detection of Massive Perivillous Fibrin Deposition
Authors: Feist Henning , Hussein Kais , Blöcker Thordis , Wohlschlaeger Jeremias
Published: July 2019

This study focused to investigate a possible association of extensive umbilical hypercoiling (displaying an umbilical coiling index [UCI] of at least 1.0 coils/cm), clinical outcome, and associated pathoanatomical placental lesions. Of the 771 singleton placentas from the second and third trimesters submitted for pathoanatomical evaluation, 15 cases (2%) displayed extensive hypercoiling. There was an association of excessive hypercoiling with hypotrophy of fetuses and children (11 cases) and fetal demise (12 cases). Thin cord syndrome and umbilical stricture were observed in 9 cases and 4 cases, respectively. Seven of the 15 cases with excessive umbilical hypercoiling showed increased placental fibrin deposition (47% of the cases with hypercoiling), in 4 cases sufficient for rendering the diagnosis of massive perivillous fibrin deposition. Signs of maternal vascular malperfusion (n = 6) and chorangiosis (n = 2) were also detected in cases with hypercoiling. Recurrence of excessive umbilical hypercoiling was observed in 2 families, suggesting a genetic predisposition for the development of this lesion. Extensive hypercoiling could be a hitherto underrecognized pathogenetic factor for the development of massive perivillous fibrin deposition. A high UCI measured in the second trimester by ultrasound may be predictive of fetal hypotrophy, and intensified fetal monitoring is warranted, particularly if there is a history of hypercoiling and adverse fetal outcome.
Using Data Science to Understand Complexity and Quantify Heterogeneity in the Onset and Progression of Chronic Disease
Authors: Tallon Erin , Dreisbach Caitlin
Published: July 2019

Novel discoveries in genomics and other omics sciences are rapidly redefining our understanding of health and disease as well as advancing the development of targeted therapeutics for improving health outcomes. The scale of these findings, fueled by vast increases in computing power and new techniques in data analytics, easily supersedes that of phenomena observed using more traditional research approaches. Until recently, the classification and diagnosis of disease has involved rather subjective processes, whereby signs and late symptom patterns are linked with clinical outcomes. However, symptom patterns, disease trajectories, and health outcomes are complex entities characterized by a wide range of clinical manifestations and progression patterns. The burgeoning fields of data science and bioinformatics are opening opportunities for nurse scientists to quantify disease heterogeneity by defining and categorizing disease phenotypes and endotypes. Nurse scientists and clinicians can play a critical role in engaging patients and the larger scientific community in these efforts. The purpose of this article is to provide an introduction to concepts critical to understanding and quantifying heterogeneity in the onset and progression of chronic disease. To present and exemplify key concepts, we (1) discuss evidence for heterogeneity in the onset and progression of Type 1 diabetes, (2) link emerging research approaches in data science with principles in network science and systems biology to lay the groundwork for stratifying subclinical and advanced chronic disease, thus expanding the purview of symptom science, and (3) describe the computational skills needed to engage in these analyses.
In-line filtration reduced phlebitis associated with peripheral venous cannulation: Focus on cost-effectiveness and patients’ perspectives
Authors: Villa Gianluca , Giua Rosa , Amass Timothy , Tofani Lorenzo , Chelazzi Cosimo , Pinelli Fulvio , De Gaudio A Raffaele , Romagnoli Stefano
Published: July 2019

Background:

In a previous trial, in-line filtration significantly prevented postoperative phlebitis associated with short peripheral venous cannulation. This study aims to describe the cost-effectiveness of in-line filtration in reducing phlebitis and examine patients’ perception of in-hospital vascular access management with and without in-line filtration.

Methods:

We analysed costs associated with in-line filtration: these data were prospectively recorded during the previous trial. Furthermore, we performed a follow-up for all the 268 patients enrolled in this trial. Among these, 213 patients responded and completed 6 months after hospital discharge questionnaires evaluating the perception of and satisfaction with the management of their vascular access.

Results:

In-line filtration group required 95.60€ more than the no-filtration group (a mean of € 0.71/patient). In terms of satisfaction with the perioperative management of their short peripheral venous cannulation, 110 (82%) and 103 (76.9%) patients, respectively, for in-line filtration and control group, completed this survey. Within in-line filtration group, 97.3% of patients were satisfied/strongly satisfied; if compared with previous experiences on short peripheral venous cannulation, 11% of them recognised in-line filtration as a relevant causative factor in determining their satisfaction. Among patients within the control group, 93.2% were satisfied/strongly satisfied, although up to 30% of them had experienced postoperative phlebitis. At the qualitative interview, they recognised no difference than previous experiences on short peripheral venous cannulation, and mentioned postoperative phlebitis as a common event that ‘normally occurs’ during a hospital stay.

Conclusion:

In-line filtration is cost-effective in preventing postoperative phlebitis, and it seems to contribute to increasing patient satisfaction and reducing short peripheral venous cannulation–related discomfort
Influence of distribution parameters of rough surface asperities on the contact fatigue life of gears
Authors: Yuqin Wen , Jinyuan Tang , Wei Zhou
Published: July 2019

The influence of the distribution parameters of asperities, i.e. mean radius of curvature of asperities β, density of asperities η, and standard deviation of asperity heights σ, on the contact fatigue life of gears is first studied in this paper. Based on the elastic–plastic contact model of asperities, the surface contact pressure and subsurface stress field during the gear meshing process are calculated by the iterative calculation method. According to the multi-axis fatigue life model, the calculation method of fatigue life under different distribution parameters of asperities in the gear meshing process is obtained. The quantitative calculation results of fatigue life and measured distribution parameters of asperities are analyzed. The relationship between the fatigue life and the distribution parameters of asperities on the measured gear surface is calculated and analyzed quantitatively. The following conclusions are drawn: (1) when the roughness value Ra is less than 0.3 µm, the contact fatigue life of gears with rough surfaces is close to that of smooth surfaces; (2) when the roughness value Ra ranges from 0.5 µm to 0.9 µm, the contact fatigue failure occurs near the surface (micro-pitting); (3) under the same roughness value Ra, the contact fatigue life of the gear decreases with the decrease of the density of the asperity and the mean curvature radius of the asperity. The mean radius of curvature of the asperity has a greater influence on the contact fatigue life than the density of the asperity.
Change in multiple sclerosis prevalence over time in Australia 2010–2017 utilising disease-modifying therapy prescription data
Authors: Campbell Julie A , Simpson Steve , Ahmad Hasnat , Taylor Bruce V , van der Mei Ingrid , Palmer Andrew J
Published: July 2019

Objective:

Determine the prevalence of multiple sclerosis (MS) in Australia in 2017 using MS-specific disease-modifying therapy (DMT) prescription data and estimate the change in prevalence from 2010.

Methods:

DMT prescriptions were extracted from Australia’s Pharmaceutical Benefits Scheme (PBS) data for January–December 2017. Percentages of people with MS using DMTs (DMT penetrance) were calculated using data from the Australian MS Longitudinal Study. Prevalence was estimated by dividing the total number of monthly prescriptions by 12 (except alemtuzumab), adjusted for DMT penetrance and Australian population estimates. Prevalences in Australian states/territories were age-standardised to the Australian population. Comparisons with 2010 prevalence data were performed using Poisson regression.

Results:

Overall DMT penetrance was 64%, and the number of people with MS in Australia in 2017 was 25,607 (95% confidence interval (CI): 24,874–26,478), a significant increase of 4324 people since 2010 ( p < 0.001). The prevalence increased significantly from 95.6/100,000 (2010) to 103.7/100,000 (2017), with estimates highest in Tasmania in 2017 (138.7/100,000; 95% CI: 137.2–140.1) and lowest in Queensland (74.6/100,000; 95% CI: 73.5–75.6). From 2010 to 2017 using the median latitudes for each state/territory, the overall latitudinal variation in MS prevalence was an increase of 3.0% per degree-latitude.

Conclusion:

Consistent with global trends, Australia’s MS prevalence has increased; this probably reflecting decreased mortality, increased longevity and increased incidence.