bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of Acotiamide on the Esophageal Motility Function in Patients with Esophageal Motility Disorders: A Pilot Study
Authors: Muta Kazumasa , Ihara Eikichi , Fukaura Keita , Tsuchida Osamu , Ochiai Toshiaki , Nakamura Kazuhiko
Published: June 2016

Background and Aim: Acotiamide is a newly developed prokinetic drug that is clinically used to treat functional dyspepsia (FD). The objective of this study was to assess the therapeutic effects of acotiamide in patients with esophageal motility disorders (EMDs). Methods: Twenty-nine patients with both symptoms of FD and symptoms suspicious of EMDs were enrolled. Esophageal motility function was evaluated by high-resolution manometry before and after 2 weeks administration of acotiamide (100 mg) 3 times per day. Results: Twenty-nine patients were diagnosed with achalasia (n = 4), esophagogastric junction outflow obstruction (EGJOO) (n = 6), absent peristalsis (n = 2), distal esophageal spasm (n = 4), frequently failed peristalsis (n = 7), weak peristalsis (n = 2) and 4 of them were found to be normal. An analysis in all 29 patients showed that acotiamide had no effects on based on distal contractile integral (DCI), basal lower esophageal sphincter (LES) pressure, or integrated relaxation pressure (IRP). Subgroup analysis, however, showed that acotiamide dramatically reduced IRP, from 19.5 (15.1-30.8) to 12.1 (5.6-16.4) mm Hg, and DCI, from 2,517.9 (1,451.0-8,385.0) to 1,872.5 (812.3-5,225.3) mm Hg·cm·s, in the 6 patients with EGJOO. Conclusions: Acotiamide potentially normalized impaired LES relaxation in patients with EGJOO, while having no effects on normal esophageal motility patterns. Acotiamide may be a promising treatment for EGJOO.
Efficacy of Ivabradine versus β-Blockers for Heart Rate Reduction during Computed Tomography Coronary Angiography: A Meta-Analysis of Randomized Controlled Trials
Authors: Qiu Shuang , Shi Shaobo , Ping Haiqin , Zhou Sanfeng , Wang Hui , Yang Bo
Published: June 2016

Objective: To quantify the efficacy of pretreatment with ivabradine compared to β-blockers before computed tomography coronary angiography (CTCA) via a meta-analysis of clinical randomized controlled trial data. Methods: We conducted a search for randomized controlled trials of pretreatment with ivabradine compared to β-blockers before CTCA in Medline, PubMed, Embase, SCI/SSCI/A&HCI, SAS Publishers, Web of Science, and the Cochrane Central Register. The Jadad quality score of the included studies, and the mean difference (MD) in heart rate reduction, were indicators of efficacy. RevMan 5.2 and Stata 12.0 software were used for the meta-analysis. Results: Eight studies involving a total of 1,324 patients were included in the final analysis. The results showed that ivabradine was significantly more effective at improving the heart rate of patients achieving the target heart rate (<65 bpm) during CTCA (OR 5.02; 95% CI 3.16-7.98, p < 0.00001, I2 = 20%). A comparison of efficacy between ivabradine and β-blockers showed a statistically significant effect of ivabradine on heart rate reduction during CTCA (MD -4.39; 95% CI −4.80 to −3.99, p < 0.00001, I2 = 0%). Ivabradine also led to a significant reduction in heart rate prior to CTCA (MD −5.33; 95% CI −10.26 to −0.39, p = 0.03, I2 = 92%). In terms of the total reduction in heart rate during CTCA, significant differences were noted between the ivabradine group and the β-blocker group (MD 2.64; 95% CI 1.25-4.02, p = 0.0002, I2 = 0%). The mean percentage reduction in heart rate in the ivabradine group was significantly higher than that in the β-blocker group (MD 7.18; 95% CI 5.64-8.72, p < 0.00001, I2 = 43%). Ivabradine had no significant effect on either systolic blood pressure (BP) (MD 11.41; 95% CI 6.43-16.40, p < 0.00001, I2 = 85%) or diastolic BP (MD 1.79; 95% CI -0.00 to 3.58, p = 0.05, I2 = 56%). Conclusion: Compared to β-blockers for heart rate reduction, ivabradine is a potentially attractive alternative for patients undergoing CTCA.
Functional Characterization of Patients with Chronic Thromboembolic Disease
Authors: Held Matthias , Kolb Philipp , Grün Maria , Jany Berthold , Hübner Gudrun , Grgic Aleksandar , Holl Regina , Schaefers Hans-Joachim , Wilkens Heinrike
Published: June 2016

Background: Patients with chronic thromboembolic pulmonary disease (CTED) have persistent pulmonary vascular obstruction and exercise intolerance without pulmonary hypertension at rest and may benefit from pulmonary endarterectomy. However, up to now, CTED has been poorly characterized. Objectives: This study aimed to analyze the exercise capacity and limiting factors in CTED. Methods: We compared right heart catheterization and cardiopulmonary exercise test results of patients with CTED [mean pulmonary artery pressure (mPAP) at rest <25 mm Hg, n = 10], chronic thromboembolic pulmonary hypertension (CTEPH, n = 31) and a control group (n = 41) presenting with dyspnea but normal pulmonary vascular imaging and excluded pulmonary hypertension. Results: Subjects with CTED show a reduced oxygen uptake [median 76/interquartile range (IQR) 22% pred.] and work rate (median 76/IQR 21 W). The work rate was significantly lower compared to control subjects (p = 0.04) but not significantly different from CTEPH patients (p = 0.66). Oxygen pulse and breathing reserve were normal. CTED subjects showed decreased end-tidal CO2 at anaerobic threshold (28.4/4.3 mm Hg), an elevated VE/VCO2 slope (42.5/23.5), breathing equivalents (EQO2 32.0/8.7, EQCO2 39.5/8.8), alveolar-capillary oxygen gradient (34.7/15.5 mm Hg) and capillary end-tidal carbon dioxide gradient (8.8/5.7 mm Hg) compared to control subjects (p < 0.001). The degree of limitation was similar to that in CTEPH. Conclusions: Despite an mPAP of <25 mm Hg, subjects with CTED show objective functional impairment and similar limitations to patients with CTEPH. Functional limitation is characterized by gas exchange disturbance and ineffective ventilation.
Counteracting Implicit Conflicts by Electrical Inhibition of the Prefrontal Cortex
Authors: Schroeder Philipp Alexander , Pfister Roland , Kunde Wilfried , Nuerk Hans-Christoph , Plewnia Christian
Published: June 2016

Cognitive conflicts and distractions by task-irrelevant information often counteract effective and goal-directed behaviors. In some cases, conflicting information can even emerge implicitly, without an overt distractor, by the automatic activation of mental representations. For instance, during number processing, magnitude information automatically elicits spatial associations resembling a mental number line. This spatial–numerical association of response codes (SNARC) effect can modulate cognitive-behavioral performance but is also highly flexible and context-dependent, which points toward a critical involvement of working memory functions. Transcranial direct current stimulation to the PFC, in turn, has been effective in modulating working memory-related cognitive performance. In a series of experiments, we here demonstrate that decreasing activity of the left PFC by cathodal transcranial direct current stimulation consistently and specifically eliminates implicit cognitive conflicts based on the SNARC effect, but explicit conflicts based on visuospatial distraction remain unaffected. This dissociation is polarity-specific and appears unrelated to functional magnitude processing as classified by regular numerical distance effects. These data demonstrate a causal involvement of the left PFC in implicit cognitive conflicts based on the automatic activation of spatial–numerical processing. Corroborating the critical interaction of brain stimulation and neurocognitive functions, our findings suggest that distraction from goal-directed behavior by automatic activation of implicit, task-irrelevant information can be blocked by the inhibition of prefrontal activity.
The Subseasonal to Seasonal (S2S) Prediction Project Database
Authors: Vitart F. , Ardilouze C. , Bonet A. , Brookshaw A. , Chen M. , Codorean C. , Déqué M. , Ferranti L. , Fucile E. , Fuentes M. , Hendon H. , Hodgson J. , Kang H.-S. , Kumar A. , Lin H. , Liu G. , Liu X. , Malguzzi P. , Mallas I. , Manoussakis M. , Mastrangelo D. , MacLachlan C. , McLean P. , Minami A. , Mladek R. , Nakazawa T. , Najm S. , Nie Y. , Rixen M. , Robertson A. W. , Ruti P. , Sun C. , Takaya Y. , Tolstykh M. , Venuti F. , Waliser D. , Woolnough S. , Wu T. , Won D.-J. , Xiao H. , Zaripov R. , Zhang L.
Published: June 2016

Demands are growing rapidly in the operational prediction and applications communities for forecasts that fill the gap between medium-range weather and long-range or seasonal forecasts. Based on the potential for improved forecast skill at the subseasonal to seasonal time range, the Subseasonal to Seasonal (S2S) Prediction research project has been established by the World Weather Research Programme/World Climate Research Programme. A main deliverable of this project is the establishment of an extensive database containing subseasonal (up to 60 days) forecasts, 3 weeks behind real time, and reforecasts from 11 operational centers, modeled in part on the The Observing System Research and Predictability Experiment (THORPEX) Interactive Grand Global Ensemble (TIGGE) database for medium-range forecasts (up to 15 days).

The S2S database, available to the research community since May 2015, represents an important tool to advance our understanding of the subseasonal to seasonal time range that has been considered for a long time as a “desert of predictability.” In particular, this database will help identify common successes and shortcomings in the model simulation and prediction of sources of subseasonal to seasonal predictability. For instance, a preliminary study suggests that the S2S models significantly underestimate the amplitude of the Madden–Julian oscillation (MJO) teleconnections over the Euro-Atlantic sector. The S2S database also represents an important tool for case studies of extreme events. For instance, a multimodel combination of S2S models displays higher probability of a landfall over the islands of Vanuatu 2–3 weeks before Tropical Cyclone Pam devastated the islands in March 2015.
Calibration of Noah Soil Hydraulic Property Parameters Using Surface Soil Moisture from SMOS and Basinwide In Situ Observations
Authors: Shellito Peter J. , Small Eric E. , Cosh Michael H.
Published: June 2016

Soil hydraulic properties (SHPs) control infiltration and redistribution of moisture in a soil column. The Noah land surface model (LSM) default simulation selects SHPs according to a location’s mapped soil texture class. SHPs are instead estimated at seven sites in North America through calibration. A single-objective algorithm minimizes the root-mean-square difference (RMSD) between simulated surface soil moisture and observations from 1) a dense network of in situ probes, 2) Soil Moisture Ocean Salinity (SMOS) satellite retrievals, and 3) SMOS retrievals adjusted such that their mean equals that of the in situ network. Parameters are optimized in 2012 and validated in 2013 against the in situ network. RMSD and unbiased RMSD (ubRMSD) assess resulting surface soil moisture behavior. At all sites, assigning SHP parameters from a different soil texture than the one that is mapped decreases the RMSD by an average of 0.029 cm3 cm−3. Similar improvements result from calibrating parameters using in situ network data (0.031 cm3 cm−3). Calibrations using remotely sensed data show comparable success (0.029 cm3 cm−3) if the SMOS product has no bias. Calibrated simulations are superior to texture-based simulations in their ability to decrease ubRMSD at times of year when the default simulation is worst. Changes to both RMSD and ubRMSD are small when the default simulation is already good. Most calibrated simulations have higher runoff ratios than do texture-based simulations, a change that warrants further evaluation. Overall, parameter selection using SMOS data shows good potential where biases are low.
Laboratory Experiments on the Effects of a Variable Current Field on the Spectral Geometry of Water Waves
Authors: Rapizo Henrique , Waseda Takuji , Babanin Alexander V. , Toffoli Alessandro
Published: June 2016

Laboratory experiments were performed to investigate the effects of a coflowing current field on the spectral shape of water waves. The results indicate that refraction is the main factor in modulating wave height and overall wave energy. Although the structure of the current field varies considerably, some current-induced patterns in the wave spectrum are observed. In high frequencies, the energy cascading generated by nonlinear interactions is suppressed, and the development of a spectral tail is disturbed, as a consequence of the detuning of the four-wave resonance conditions. Furthermore, the presence of currents slows the downshifting of the spectral peak. The suppression of the high-frequency energy under the influence of currents is more prominent as the spectral steepness increases. The energy suppression is also more accentuated and long-standing along the fetch when the directional spreading of waves is sufficiently broad. This result indicates that the current-induced detuning of resonant conditions is more effective when exact resonances are the primary mechanism of nonlinear interactions than when quasi resonances prevail (directionally narrow cases). Additionally, the directional analysis shows that the highly variable currents broaden the directional spreading of waves. The broadening is suggested to be related to random refraction and scattering of wave rays. The random disturbance of wavenumbers alters the nonlinear interaction conditions and weakens the energy exchanges among wave components, which is expressed in the suppression of the high-frequency energy.
Screening for Adulterants in Liquid Milk Using a Portable Raman Miniature Spectrometer with Immersion Probe
Authors: Nieuwoudt Michél K. , Holroyd Stephen E. , McGoverin Cushla M. , Simpson M. Cather , Williams David E.
Published: June 2016

A portable Raman system with an immersion fiber optic probe was assessed for point-of-collection screening for the presence of adulterants in liquid milk. N-rich adulterants and sucrose were measured in this proof-of-concept demonstration. Reproducibility, limit of detection range and other figures of merit such as specificity, sensitivity, ratio of predicted to standard deviation, standard error of prediction and root mean squared error for cross validation were determined from partial least squares (PLS) and partial least squares with discriminant analysis (PLS-DA) calibrations of milk mixtures containing 50–1000 ppm (parts per million) of melamine, ammonium sulphate, Dicyandiamide, urea and sucrose. The spectra were recorded by immersing the fiber optic probe directly in the milk solutions. Despite the high scattering background which was easily and reliably estimated and subtracted, the reproducibility for four N-rich compounds averaged to 11% residual standard deviation (RSD) and to 5% RSD for sucrose. PLS calibration models predicted the concentrations of separate validation sets with standard errors of prediction of between 44 and 76 ppm for the four N-rich compounds and 0.17% for sucrose. The sensitivity and specificity of the PLS-DA calibration were 92% and 89%, respectively. The study shows promise for use of portable mini Raman systems for routine rapid point-of-collection screening of liquid milk for the presence of adulterants, without the need for sample preparation or addition of chemicals.
Working With Symbolic Transference
Authors: Vanheule Stijn , Arnaud Gilles
Published: June 2016

The present study explores how aspects of Jacques Lacan’s psychoanalytic theory can be applied to coaching, focusing on corporate dysfunction. Conceptually, the article starts from Lacan’s distinction between the registers of the Imaginary and the Symbolic, as outlined in his L-schema, and the concept of transference. It is argued that by focusing on symbolic transference, and by exploring signifiers that insistently return in a patient’s speech, Lacanian-oriented coaching can bring clients to the point of recognizing the unconscious determinants of their daily interactions and behavior, and make a step toward dealing differently with their desire, such that it no longer has a disrupting effect on their performance. Principles for individual coaching are outlined and two case studies are presented. The case discussions reveal that desire and conflict can be clarified by mapping and addressing core signifiers of the client’s speech.
Knee osteoarthritis: a review of management options
Authors: Hussain SM , Neilly DW , Baliga S , Patil S , Meek RMD
Published: June 2016

Osteoarthritis of the knee is a complex peripheral joint disorder with multiple risk factors. The molecular basis of osteoarthritis has been generally accepted; however, the exact pathogenesis is still not known. Management of patients with osteoarthritis involves a comprehensive history, thorough physical examination and appropriate radiological investigation. The relative slow progress in the disease allows a stepwise algorithmic approach in treatment. Non-surgical treatment involves patient education, lifestyle modification and the use of orthotic devises. These can be achieved in the community. Surgical options include joint sparing procedures such as arthroscopyando osteotomy or joint-replacing procedures. Joint-replacing procedures can be isolated to a single compartment such as patellofemoral arthroplasty or unicompartmental knee replacement or total knee arthroplasty. The key to a successful long-term outcome is optimal patient selection, preoperative counselling and good surgical technique.
When and How Subordinate Performance Leads to Abusive Supervision: A Social Dominance Perspective
Authors: Khan Abdul Karim , Moss Sherry , Quratulain Samina , Hameed Imran
Published: June 2016

While we would typically expect poor performers to elicit abusive responses from their supervisors, we theorize that high performers may also be victims of abusive supervision. Specifically, we draw on social dominance theory to hypothesize and demonstrate that subordinate performance can have a positive, indirect effect on abusive supervision through the mediator of perceived threat to hierarchy. And this positive indirect effect prevails when the supervisor’s social dominance orientation is high. We found support for our theoretical model using data collected from supervisor–subordinate dyads.
Office Workers’ Risk of Metabolic Syndrome-Related Indicators
Authors: Ryu Hosihn , Kim Youngnam , Lee Juneyoung , Yoon Seok-jun , Cho Jeong-hyun , Wong Erica , Jung Jiyeon
Published: June 2016

The purpose of the study is to assess the relationship between the prevalence of metabolic syndrome–related risk factors and work tenure among office workers. A 10-year cohort analysis was conducted using employees’ health examinations given to new employees within 1 or 2 years of joining the firm and every 5 years thereafter. Age-adjusted odds ratios (95% confidence interval [CI], p < .05) were calculated based on a contrast test with general estimating equations. Specifically, the age-adjusted odds ratios and CIs of those with 20 ± 1 years of work, compared with those with 1 to 2 years of work, were as follows: triglycerides (≥150 mg/dl) 3.01 (2.11, 4.28), waist circumference (male ≥90 cm) 2.70 (1.63, 4.45), and fasting glucose (≥100 mg/dl) 2.67 (1.78, 4.01). The findings of the relationship between metabolic syndrome risk and work tenure as well as the baseline health data of new employees provide a foundation for developing a workplace health management system.
Borrowing legitimacy as English learner (EL) leaders: Indiana’s 14-year history with English language proficiency standards
Authors: Morita-Mullaney Trish
Published: June 2016

English language proficiency or English language development (ELP/D) standards guide how content-specific instruction and assessment is practiced by teachers and how English learners (ELs) at varying levels of English proficiency can perform grade-level-specific academic standards in K–12 US schools. With the transition from the state-developed Indiana ELP/D standards adopted in 2003 to the World Class Instructional Design and Assessment (WIDA) English language development standards adopted in 2013, this paper explores Indiana’s ELP/D standard’s 14-year history and how its district EL/Bilingual district leaders have interpreted and implemented these two sets of standards between the school years 2002–03 and 2015–16.

Using critical leadership and feminism within a narrative design, EL/Bilingual leaders illuminate distinct leadership logics as they mediate and implement ELP/D standards in their districts. Academic content standards are regarded with greater privilege, complicating how EL/Bilingual leaders can position ELP/D standards. Restricted by this standards hierarchy, EL/Bilingual leaders found limited educational venues in which to discuss the performance-based nature of ELP/D standards. Implications for assessment, policy, and leadership preparation are discussed.
Don’t panic. A guide to tryptophan depletion with disorder-specific anxiety provocation
Authors: Hood SD , Bell CJ , Argyropoulos SV , Nutt DJ
Published: June 2016

The 2002 paper “Does 5-HT restrain panic? A tryptophan depletion study in panic disorder patients recovered on paroxetine” by Bell and colleagues – reprinted in this issue of the Journal – reports on a study undertaken in the halcyon days of David Nutt’s Psychopharmacology Unit at the University of Bristol, England. In this invited commentary authors of the original work discuss the impact of this paper on the field of acute tryptophan depletion research (especially in the field of clinical anxiety disorders) and the development of disorder-specific anxiogenic provocations over the past decade.
Relationship between platelet parameters and hepatic pathology in patients with chronic hepatitis B infection – a retrospective cohort study of 677 patients
Authors: Pan Ye , Muheremu Aikeremujiang , Wu Xiaolu , Liu Jiajun
Published: June 2016

Objective

A retrospective study to determine the relationships between platelet parameters and inflammation and fibrosis of the liver in patients with chronic hepatitis B virus infection (CHB).

Methods

Patients with liver biopsy-confirmed CHB were included in the study. Liver fibrosis and inflammation were assessed by histopathology of biopsied liver tissue. Platelet count (PLT), platelet distribution width (PDW) and mean platelet volume (MPV) were determined as part of routine blood tests. The relationship between inflammation and fibrosis and platelet parameters were analysed by multiple linear regression.

Results

The study included 677 patients. PLT and PDW accounted for 20.5% of liver inflammation. PLT and PDW accounted for 18.4% of liver fibrosis.

Conclusion

Platelet parameters can provide valuable information for the assessment of hepatic inflammation and fibrosis.
Temporal Changes in Cellular Repopulation and Collagen Fibril Remodeling and Regeneration After Allograft Anterior Cruciate Ligament Reconstruction
Authors: Takeuchi Hiroki , Niki Yasuo , Matsunari Hitomi , Umeyama Kazuhiro , Nagashima Hiroshi , Enomoto Hiroyuki , Toyama Yoshiaki , Matsumoto Morio , Nakamura Masaya
Published: June 2016

Background:

Distinguishing recipient cells from donor ligament cells is difficult in the early graft-healing phase after anterior cruciate ligament (ACL) reconstruction. The ability to track the distribution and differentiation of recipient cells using genetically engineered transgenic (Tg) animals would have significant clinical and research effects on graft healing after ACL reconstruction.

Hypothesis:

Kusabira-Orange Tg pigs may allow the tracking of recipient cells infiltrating the graft after ACL reconstruction. The repopulation of recipient cells within the graft would be apparent even in the early graft-healing phase when necrotic donor cells are still present.

Study Design:

Descriptive laboratory study.

Methods:

In 17 genetically engineered Tg pigs, which carried the red fluorescent protein Kusabira-Orange, ACL reconstruction was performed on the right knee using a digital flexor tendon harvested from wild-type pigs. Tissue samples harvested at different time points were subjected to histological, immunohistochemical, and electron microscopic analyses.

Results:

At 3 weeks postoperatively, recipient cells expressing red fluorescence embraced the graft and were infiltrating the central part of the graft. These cells with oval nuclei gradually infiltrated the gap of collagen fibers, losing their regular orientation. At 6 weeks, cellularity within the graft had doubled to match that of the native ACL, while acellular necrotic regions still existed centrally. Ubiquitous cellular distributions resembling the native ACL were observed at 24 weeks. Electron microscopic analysis showed that the mean collagen fibril diameter and density gradually decreased over 24 weeks.

Conclusion:

Genetically engineered pigs carrying the Kusabira-Orange gene were useful animal models for analyzing intrinsic and extrinsic cellular dynamics during the course of graft healing after ACL reconstruction. Cellular repopulation by recipient cells occurred in the very early stage, and the cellular distribution within the graft resembled that in the native ACL by 24 weeks, but the reconstructed graft had not restored the ultrastructure of the native ACL by that stage.

Clinical Relevance:

In allograft ACL reconstruction in a pig model, cellular repopulation was completed by 24 weeks after surgery, but the collagen matrix had not resumed the ultrastructure of the native ACL. Surgeons should be aware that risks may remain with returning to sports activities at 24 weeks after surgery.
Pillars in the works of Loïc Wacquant
Authors: Delica Kristian Nagel , Hansen Christian Sandbjerg
Published: June 2016

The critical and polemic receptions of the work of Loïc Wacquant has been extensive, but to a large extent focused on specific works and colored by professional specialty, that is, in a word: fragmented. In counteracting that fragmented response, the article sheds light on the undercurrents in Wacquant’s works by stressing four prominent and consistent features: his heritage from (and updating of) Bourdieu; his emphasis on and constant practice of theory (implicit as well as explicit); the distinct ethos with which he addresses political sociology (in the dual form of a sociology analyzing the effects of the political productions of populations categories and a so-called ‘civic sociology’); and finally, the persistent and ubiquitous critique of everything in existence – a thematic indicator permeating each and every one of his works. Thus the article proposes a unifying reading of Wacquant as an interpretation advocating revitalization of a critical social science.
Initial Understandings of Fraction Concepts Evidenced by Students With Mathematics Learning Disabilities and Difficulties
Authors: Hunt Jessica H. , Welch-Ptak Jasmine J. , Silva Juanita M.
Published: June 2016

Documenting how students with learning disabilities (LD) initially conceive of fractional quantities, and how their understandings may align with or differ from students with mathematics difficulties, is necessary to guide development of assessments and interventions that attach to unique ways of thinking or inherent difficulties these students may face understanding fraction concepts. One way to characterize such conceptions is through the creation of a framework that depicts key understandings evidenced as students work with problematic situations. The present study extends current literature by presenting key understandings of fractions, documented through problem-solving activity, language, representations, and operations, evidenced by students with LD and mathematics difficulties as they engaged with equal sharing problems. Clinical interviews were conducted with 43 students across the second, third, fourth, and fifth grades. Results of the study suggest that students with LD hold similar informal notions of key understandings of fractions as students with mathematics difficulties and that many of the students evidenced rudimentary understandings of fractional quantities. Researchers discuss implications of the findings in relation to considerations for designing interventions to support and extend students’ initial conceptions of fractional quantity.
Explicit Instructional Interactions
Authors: Doabler Christian T. , Clarke Ben , Stoolmiller Mike , Kosty Derek B. , Fien Hank , Smolkowski Keith , Baker Scott K.
Published: June 2016

A critical aspect of intervention research is investigating the active ingredients that underlie intensive interventions and their theories of change. This study explored the rate of instructional interactions within treatment groups to determine whether they offered explanatory power of an empirically validated Tier 2 kindergarten mathematics intervention. Direct observations were conducted in 46 interventions groups, involving approximately 228 students. Multilevel structural equation models revealed that fall mathematics achievement significantly and negatively predicted the rate of academic feedback. Specifically, intervention groups with lower student mathematics achievement at the start of the kindergarten year received higher rates of academic feedback. Analyses also suggested that latent rates of instructional interactions were not significantly correlated with gains on student mathematics outcomes. Implications are discussed in relation to specifying the underlying mechanisms to intensify mathematics interventions, documenting local adaptation of intervention implementation, and examining possible threshold effects of instructional interactions.
Exploring Criteria Consumers Use in Evaluating Their Online Formal Wear Rental Experience
Authors: McKinney Ellen , Shin Eonyou
Published: June 2016

To develop an understanding of consumers’ evaluations of their Rent the Runway (RTR) experiences, their online reviews were systematically sampled and saved as screen shots. Content analysis was conducted in two stages: (a) analysis of 201 reviews to develop the coding scheme and (b) data collection and analysis from an additional 600 reviews. Insights into RTR’s strategies for overcoming the challenges associated with online apparel sales were yielded. These may provide direction for other apparel companies. When planning their product offerings, online apparel rental companies should consider the most important apparel evaluative criteria found for RTR reviewers: (a) fit, (b) garment style and design elements, (c) social feedback, and (d) appropriateness. Companies may (a) adopt RTR’s unique e-service, shipping two sizes of the same dress; and (b) encourage reviewers to include more self-descriptive and dress-descriptive information in their reviews, both of which seemed to alleviate online shopping fit concerns.
Union formation and worker resistance in a multinational: A personal account of an Asian cabin crew member in UK civil aviation
Authors: Byford Iona , Wong Susan
Published: June 2016

This article presents a first-hand account and afterword by ‘Susan Wong’ on the formation of an Asian cabin crew trade union and the nine-year period of resistance in response to imposed changes to employment terms and conditions by the management of a UK multinational airline. The main issue was an imposed premature retirement age compared to UK-based colleagues. Opposition occurred in the UK courts, to identify the correct employment jurisdiction and then cite both age and race discrimination. The workers’ victory over the company, which had similar plans for other overseas workers, demonstrates union efficacy and Susan’s determination and resilience. The narrative enhances the understanding of the micro-processes of mobilization, the nature of discrimination and identity, and the lived experience of combining cabin crew work with union activism.
Social Work With Groups’ Practice Ethics and Standards
Authors: Lee Cheryl D.
Published: June 2016

Objective:

The purpose of this research was to (a) learn how confident social work students were with social work with groups’ ethics and standards, (b) explore strengths and challenges, (c) examine if group work experience impacts results, and (d) discover if confidence improved when the International Association of Social Work with Groups (IASWG) Standards became required class reading.

Method:

Social work students ( n = 234) were given the Inventory of Foundation Competencies in Social Work with Groups (IC-SWG) at the beginning and end of 15-week group work classes. Descriptive statistics, analyses of variance, and t tests were conducted.

Results:

Students’ scores improved from pretest to posttest ( p = .000). They were confident in their ability to respect and highly value diversity (mean = 3.5/4) but were challenged employing special skills with and understanding dynamics of mandated clients (2.99/4).

Conclusion:

Incorporation of the IASWG Standards and group work experience were associated with greater competencies. The IC-SWG identified challenges that can be addressed in classrooms, field internships, and group work practice settings.
Influence of lubrication starvation and surface waviness on the oil film stiffness of elastohydrodynamic lubrication line contact
Authors: Zhang Yuanyuan , Liu Huaiju , Zhu Caichao , Song Chaosheng , Li Zufeng
Published: June 2016

Stiffness properties of interfacial engineering surfaces are of great importance to the dynamic performance of relevant mechanical systems. Normal contact stiffness and oil film stiffness of line contact problems are studied in this work analytically and numerically. The Hertzian contact theory and the Yang–Sun method are applied to predict the contact stiffness, while the empirical elastohydrodynamic lubrication (EHL) film thickness method and the complete numerical EHL model are used to predict the oil film stiffness. The numerical model mainly consists of the Reynolds equation; the film thickness equation, in which the regular surface roughness is taken into consideration; the force balance equation; and the viscosity-pressure equation. The effects of the normal load, rolling speed, regular surface waviness, and starved lubrication level on the oil film stiffness are investigated.
Effort Allocation in Children With ADHD: Abnormal Decision-Making or Poor Execution?
Authors: Winter Yael , Ben-Pazi Hilla , Pollak Yehuda
Published: June 2016

Objective: Effort allocation is a multi-faceted process driving both the decision to choose a high effort–high reward alternative over a low effort–low reward alternative, and the execution of this decision by recruiting sufficient effort. The objectives of our study were to examine whether children with ADHD would (a) show different reward–effort cost trade-off, and (b) have difficulty executing their decision. Method: 50 children, aged 9 to 15, with and without ADHD, had to choose between high effort–high reward and low effort–low reward alternatives using a handheld dynamometer and to execute their choice. Results: Children with ADHD and controls made similar number of high-effort choices ( p = .806). However, children with ADHD executed their high-effort choices less frequently compared with controls ( p = .029). Conclusion: These findings suggest that children with ADHD are not characterized by different effort–reward trade-off but rather by difficulties in recruiting effort for their preferences implementation.
United We Stand? Negotiating Space and National Memory in the 9/11 Arizona Memorial
Authors: Bishop Sarah C.
Published: June 2016

This essay examines Moving Memories, the 9/11 Memorial in Tucson, Arizona, as an instance of resistance to dominant ideologies regarding the public memory of national tragedy. Though Moving Memories was designed to reveal the conflicting viewpoints embodied by those affected by 9/11, area residents and government representatives argue that it fails to capture the “true” sentiment of Arizonans. This analysis provides a theoretical interrogation of the memorial’s unveiling and later contestation, illustrates the political value of unity over dissention, and theorizes the implications of spatiality in memorialization by way of a detailed review of one of Moving Memories’ particularly divisive features.
The right to personal property
Authors: Wells Katy
Published: June 2016

The subject of this article is the Rawlsian right to personal property. Adequate discussion of this right has long been absent from the literature, and the recent rise in interest in other areas of Rawlsian thought on property makes the issue particularly pertinent. The right to personal property as proposed by orthodox Rawlsians – in this article, the position is represented by Rawls himself – is best understood, I claim, either as a right to be able to privately own housing and personal items or as a right to actually own these things. I argue, however, that the resources of a Rawlsian theory cannot justify a basic right to property which is as extensive as this. Instead, what can be justified is a more limited set of rights, comparable with the rights we have over objects that we rent. Rawlsian justice, then, has a more radical implications in terms of basic property rights than has previously been thought.
Paradoxical and powerful: Volunteers’ experiences of befriending people with dementia
Authors: Greenwood Diane E , Gordon Carolyn , Pavlou Claire , Bolton Jessica V
Published: June 2016

This qualitative UK study explored the lived experiences of volunteer befrienders to people with dementia, using interpretative phenomenological analysis. Individual semi-structured interviews were conducted with nine befrienders aged between 25 and 66 years. The relationship that developed between befriender and befriendee was at the heart of befrienders’ experiences. It comprised numerous paradoxical processes that generated issues of power, equality and boundaries, characterising befriending as a complex and unique phenomenon. Befriending was expressed as a deeply personal and human experience, often with emotional power and profound meaning. Befrienders’ personal learning included seeing past dementia stereotypes, challenging their own assumptions and boundaries, and reflecting on love, life and humanness. Dissemination of these findings could help to challenge the stigma around dementia, and enhance recruitment and support of dementia befrienders. Future research should consider befriendee experiences of the relationship, additional measures of befriending effectiveness, and exploration of befriender attrition and support.
Serum Cholinesterase Levels Are Associated With 2-Year Ischemic Outcomes After Angioplasty and Stenting for Peripheral Artery Disease
Authors: Gremmel Thomas , Wadowski Patricia P. , Mueller Markus , Kopp Christoph W. , Koppensteiner Renate , Panzer Simon
Published: June 2016

Purpose: To prospectively investigate the associations of serum cholinesterase (CHE) levels with ischemic outcomes after angioplasty and stenting for lower limb peripheral artery disease (PAD). Methods: A prospective cohort study enrolled 108 patients with Rutherford category 2–3 ischemia who had successful primary unilateral angioplasty and self-expanding bare metal stent implantation for superficial femoral artery (SFA) stenosis. The primary endpoint was a composite of nonfatal myocardial infarction, nonfatal stroke or transient ischemic attack, cardiovascular death, or >80% target lesion restenosis within 2 years after peripheral angioplasty. Target lesion restenosis (restenosis endpoint) and the composite of the aforementioned atherothrombotic events (atherothrombotic endpoint) within 2-year follow-up were defined as secondary endpoints. Results: CHE levels were not available in 4 patients due to technical problems and 4 patients were lost to follow-up. The remaining 100 patients (median age 65 years; 62 men) met the minimum sample size requirement for statistical analysis. Median CHE levels were significantly lower in patients who subsequently experienced the primary endpoint compared with patients without ischemic events [7.1 (IQR 6.3–8.1) vs 8 (IQR 7–9.3) kU/L, p=0.007]. A CHE level <8.3 kU/L was identified as the best cutoff value to predict the primary endpoint, providing an 82.1% sensitivity and 44.3% specificity. The primary endpoint occurred significantly more often in patients with low CHE <8.3 kU/L than in patients with higher CHE levels (32 vs 7 patients, p=0.01). In multivariable Cox regression analysis, low CHE was associated with a 2.6-fold increased risk (95% CI 1.1 to 5.9, p=0.03) of the primary endpoint. Moreover, patients who suffered the secondary restenosis endpoint had significantly lower median CHE levels than patients without restenosis [7.1 (IQR 6.3–8.2) vs 7.9 (IQR 7–8.9) kU/L, p=0.02], and restenosis occurred more frequently in patients with low CHE compared with those with higher CHE levels (27 vs 7 patients, p=0.04). Conclusion: Low CHE is associated with an increased risk of long-term adverse ischemic events following SFA angioplasty with stent implantation for PAD.
International Sales of U.K. Television Content
Authors: Steemers Jeanette
Published: June 2016

Focusing on the United Kingdom, this article addresses key issues facing the international distribution industry arising from over-the-top (OTT) digital distribution and the fragmentation of audiences and revenues. Building on the identification of these issues, it investigates the extent to which U.K. distribution has altered over a ten-year period, pinpointing continuities in the destination and type of sales alongside changes in the role and structure of the industry as U.K.-based distributors adapt to a changing U.K. broadcasting landscape and global production environment. At one level, increasing U.S. ownership of U.K.-based distributors and the arrival of OTT players such as Netflix highlight the tensions between the national orientations of U.K. broadcasters and the global aspirations of independent producers and distributors. At another level, video-on-demand (VOD) has boosted international sales of U.K. drama. Although the full impact of subscription VOD (SVOD) on content and rights has yet to materialize, significant changes in the industry predate the arrival of SVOD.
Cows on Facebook and Instagram
Authors: Linné Tobias
Published: June 2016

This article analyzes producer–consumer relations in social media marketing in the Swedish dairy industry. The article discusses how ideas of interspecies intimacy are publicly performed in an interactive process between the dairy industry producers and social media users. Two examples from the Swedish dairy industry were chosen for analysis: one Instagram account and one Facebook account. The analysis shows how the pages are premised on spectacularly visualizing the emotional labor and performances of cows for capital accumulation. The dairy industry’s social media presence encourages the media users to engage in building the perception that Swedish dairy farms represent an idyll where the cows are willing producers of the milk that is taken from them, and the dairy industry is loving, caring, and compassionate. Thus, the social media marketing represents a co-opting not only of the ideals of participation that social media holds but also of the ideals of ethical consumptions.
Transformational leadership in the educational system of the United Arab Emirates
Authors: Litz David , Scott Shelleyann
Published: June 2016

Globally, there is increasing pressure on schools to enact change, and the literature indicates that transformational leadership is positively associated with school leaders’ effectiveness at implementing positive reforms. Here, we report on a study conducted in the United Arab Emirates (UAE) within the current context of intense educational restructuring in the K–12 system. The purpose was to investigate whether school principals in the UAE practise transformational leadership, and whether they and their teachers perceived principals’ leadership styles differently to their western counterparts. This study adopted a mixed methodology, and revealed variation in perceptions between principals and teachers related to whether principals were practising transformational leadership. However, when analysed using Hofstede’s cultural framework, this variation may be related to cultural differences between the western orientation of the leadership model adapted by Emirati principals and the Islamic orientation of the population. Therefore, a new model of transformational leadership is proposed, based on a paradigm that may be more appropriate for Middle Eastern/Islamic contexts. This Modified Transformational Model may be useful to those leaders who wish to adopt transformational leadership with cultural accommodations.
The impact of pay satisfaction and school achievement on high school principals’ turnover intentions
Authors: Tran Henry
Published: June 2016

In recent years, a principal supply shortage crisis has emerged in the USA. This problem has been exacerbated by an increase in principal departures, which has been found to be negatively related to school outcomes. While research exists on several determinants of principal turnover, any examination of the relationship between principals’ affective reaction to pay relative to their intent to leave their position at a particular school is missing from the literature. This research seeks to fill this void by examining the association between California (USA) high school principals’ pay satisfaction and turnover intentions ( n=156). The importance of potential referent sources (i.e., teachers within the school districts, other high school principals within the school district, and other high school principals in different school districts) for pay satisfaction and the relationship between achievement and turnover intentions were also examined. This study uses a two-stage structural equation modelling approach and finds evidence to suggest that high school principals’ pay satisfaction is influenced by the salaries of comparative peers and is negatively associated with principals’ intention to turnover. Achievement was not found to be related to turnover intentions. Policy implications and future research recommendations are discussed.