bluuebunny/crossref_metadata_2025 huggingface dataset:
Corticosterone impairs flexible adjustment of spatial navigation in an associative place–reward learning task
Authors: Rusu Silviu I. , Lankelma Jan V. , Jackson Jadin C. , Van Mourik-Donga Laura A. , Joëls Marian , Pennartz Cyriel M.A.
Published: November 2017

Cognitive challenges are often accompanied by a discharge of stress hormones, which in turn modulate multiple brain areas. Among these, the medial temporal lobe and the prefrontal cortex are critically involved in high-order cognitive functions such as learning, memory, and decision-making. Previous studies assessing the effects of corticosterone on spatial memory found an increase or a decrease in performance depending on the timing of stress hormone discharge relative to the behavioral task. Most of these studies, however, made use of aversively motivated behaviors, whereas less is known about corticosteroid effects on flexible learning during reward-driven spatial navigation. To study how corticosterone modulates flexible spatial learning, we tested rats on a place–reward association task where hormone treatment was administered immediately after a session presenting a change in reward locations. The corticosterone-treated group showed delayed learning during the initial sessions and suboptimal memory consolidation throughout testing. Repeated training on the novel reward positions improved performance and eliminated differences from the control group. We conclude that a marked increase in plasma corticosterone levels immediately after training impairs the flexible formation of new place–reward associations.
IDIOPATHIC MULTIFOCAL CHOROIDITIS PRESENTING WITH A TRANSIENT PERIPAPILLARY WHITE RING
Authors: Gattoussi Sarra , Ghadiali Quraish , Dolz-Marco Rosa , Freund K. Bailey
Published: November 2017

Purpose:

We describe with multimodal imaging the presentation and follow-up for a patient with idiopathic multifocal choroiditis and a transient peripapillary white ring.

Methods:

Case report.

Results:

A 39-year-old Asian woman was initially seen for an evaluation of lattice degeneration in 2015. Her medical history included Graves disease and psoriasis. Best-corrected visual acuity was 20/25 in her right eye and 20/25 in her left eye. Ultra–widefield fundus autofluorescence imaging showed a curvilinear hyperautofluorescent line in her right eye. One year later, the patient returned complaining of floaters in her right eye for 1 month. Her visual acuity was unchanged. Funduscopic examination showed new inflammatory yellowish lesions in the right eye corresponding to hyperreflective sub–retinal pigment epithelium lesions on structural spectral domain optical coherence tomography. Fluorescein angiography showed corresponding late staining of these active lesions. Late-phase indocyanine green angiography showed multiple nummular hypocyanescent dots. Ultra–widefield fundus autofluorescence showed large areas of hyperautofluorescence. The patient was started on a 60-mg oral prednisone taper and demonstrated subsequent regression of the inflammatory lesions. Ten months later, the patient returned emergently with complaints of floaters in both eyes for 2 days and a new temporal scotoma in her left eye. Funduscopic examination demonstrated a white ring around the optic nerve of the left eye corresponding to a hyperautofluorescent lesion. Ultra–widefield fundus autofluorescence showed new areas of hyperautofluorescence in both eyes. Structural spectral domain optical coherence tomography showed new sub–retinal pigment epithelium inflammatory lesions and a disruption of the ellipsoid zone in both eyes. The patient was again treated with a 60-mg oral prednisone taper and demonstrated subsequent restoration of the ellipsoid zone.

Conclusion:

To our knowledge, this is the first report of a transient annular white ring occurring in a case of multifocal choroiditis. There was marked restoration of the disrupted ellipsoid zone after treatment with oral corticosteroids.
ATYPICAL PERIPAPILLARY INNER RETINOSCHISIS IN STELLATE NONHEREDITARY IDIOPATHIC FOVEOMACULAR RETINOSCHISIS
Authors: Javaheri Michael , Sadda SriniVas R.
Published: November 2017

Purpose:

To describe an atypical presentation of a patient with stellate nonhereditary idiopathic foveomacular retinoschisis with peripapillary retinoschisis of multiple layers.

Methods:

Complete ophthalmic examination including dilated extended ophthalmoscopy, fluorescein angiography, optical coherence tomography, optical coherence tomography angiography, and wide-field fundus photography.

Results:

A 36-year-old Chinese American woman with mild myopia and good visual acuity (20/20) exhibited macular splitting of the outer plexiform layer on spectral domain optical coherence tomography with an attached hyaloid in her left eye. Peripheral spectral domain optical coherence tomography also demonstrated peripapillary and midperipheral inner retinoschisis, involving the outer plexiform layer and inner retina. The right eye was unremarkable. The diagnosis of stellate nonhereditary idiopathic foveomacular retinoschisis was made because of a lack of other associated ocular conditions and no family history of retinoschisis.

Conclusion:

Stellate nonhereditary idiopathic foveomacular retinoschisis is a recently described and uncommon cause of foveomacular retinoschisis in myopic women with good visual acuity. Recent evidence suggests that peripheral imaging is key in identifying other findings, including midperipheral or peripapillary inner retinoschisis, involving the outer plexiform layer and the inner retina. Our patient may represent a variant of stellate nonhereditary idiopathic foveomacular retinoschisis that can be characterized by multilayer peripapillary retinoschisis.
A 9-YEAR-OLD GIRL WITH ACUTE MACULAR NEURORETINOPATHY
Authors: Rodríguez-Vargas Gabriel , Gutiérrez-Hernández Juan C.
Published: November 2017

Purpose:

To report the clinical findings of the youngest confirmed case of acute macular neuroretinopathy to the best of our knowledge.

Methods:

A 9-year-old patient describing a paracentral scotoma with a normal clinical examination and normal fluorescein angiography.

Results:

Initial fundus examination was unremarkable. Fluorescein angiography findings showed no abnormalities but scotoma was confirmed using Amsler grid. Optical coherence tomography showed a parafoveal hyperreflective band in the outer layers. Subsequent optical coherence tomography showed resolution of the pathology.

Conclusion:

Acute macular neuroretinopathy is a rare condition usually presented as paracentral scotomas. Optical coherence tomography and Amsler grid testing can be used for diagnosis and to monitor findings on follow-up until resolution.
IMMUNE RETINOPATHY ASSOCIATED WITH NIVOLUMAB ADMINISTRATION FOR METASTATIC NON–SMALL CELL LUNG CANCER
Authors: Reddy Manisha , Chen Judy J. , Kalevar Ananda , Terribilini Ryan , Agarwal Anita
Published: November 2017

Purpose:

To present a novel case of immune retinopathy associated with nivolumab therapy for non–small cell lung cancer.

Methods:

Retrospective chart review.

Results:

A 64-year-old woman presented with photoreceptor injury evidenced by hypoautofluorescent and hyperautofluorescent patches on fundus autofluorescence, loss of the ellipsoid zone on optical coherence tomography, and dysfunction of the rods and cones on electroretinogram. She had a history of Stage IV lung adenocarcinoma, treated with nivolumab, a checkpoint inhibitor. Serology testing was negative for paraneoplastic antibody panel, antirecoverin and antienolase antibodies, but positive for antiretinal antibodies against 30-kDa (carbonic anhydrase II), 35-kDa (GADPH), 38-kDA, 58-kDa (PKM2), and 112-kDa proteins. Cessation of the medication and high-dose oral steroids resulted in resolution of her symptoms and stability of ocular findings.

Conclusion:

The checkpoint inhibitors, including nivolumab, have significant ocular side effects. All patients receiving nivolumab should undergo a baseline comprehensive eye examination and should be counseled to seek medical attention immediately if visual changes occur.
Men Who Have Sex With Men—Identification Criteria and Characteristics From the National Health and Nutrition Examination Survey, 1999 to 2014
Authors: Esie Precious , Kang Joseph , Flagg Elaine W , Hong Jaeyoung , Chen Tianqi , Bernstein Kyle
Published: November 2017

Objectives

This study aimed to provide identification criteria for men who have sex with men (MSM), estimate the prevalence of MSM behavior, and compare sociodemographics and sexually transmitted disease risk behaviors between non-MSM and MSM groups using data from a nationally representative, population-based survey.

Methods

Using data from men aged 18 to 59 years who took part in the National Health and Nutrition Examination Survey (NHANES), 1999 to 2014, detailed criteria were developed to estimate MSM behavior—at least one lifetime same-sex partner (MSM-ever), at least one same-sex partner in the past 12 months (MSM-current), and at least one lifetime and zero same-sex partners in the past 12 months (MSM-past).

Results

The estimated prevalence of MSM-ever was 5.5%—of these, 52.4% were MSM-current and 47.1% were MSM-past. Furthermore, MSM-ever are a nonhomogenous subpopulation, for example, 70.4% of MSM-current identified as homosexual and 71.2% of MSM-past identified as heterosexual (P < 0.001).

Conclusions

The prevalence of MSM behavior identified here is similar to other published estimates. This is also the first article, to our knowledge, to use National Health and Nutrition Examination Survey data to compare MSM by 2 recall periods (recent vs. lifetime) of last same-sex sexual behavior.
Rapid Increase in Reports of Syphilis Associated With Men Who Have Sex With Women and Women Who Have Sex With Men, Japan, 2012 to 2016
Authors: Takahashi Takuri , Arima Yuzo , Yamagishi Takuya , Nishiki Shingo , Kanai Mizue , Ishikane Masahiro , Matsui Tamano , Sunagawa Tomimasa , Ohnishi Makoto , Oishi Kazunori
Published: November 2017

Background

In Japan, syphilis reports have recently increased rapidly. However, unlike other developed countries where men who have sex with men (MSM) were associated with the rise, the increase in Japan has been attributed more to men who have sex with women (MSW) and women who have sex with men (WSM). We report on this increase based on surveillance data.

Methods

Syphilis is a notifiable disease requiring all laboratory-confirmed cases to be reported; stage and sex of the sex partner(s) suspected as the infection source are also reported. Focusing on primary and secondary (P&S) cases, we describe the temporal, demographic, and geographic distributions of reported cases in 2012 through 2016.

Results

A total of 7040 (64.0%) of 10,997 cases were P&S; the annual rate of increase was greatest for P&S and the proportion of P&S increased over time. Among P&S cases (1609 MSM, 2768 MSW, and 1323 WSM), MSW and WSM each surpassed MSM cases in 2016. Men were older with a wider age distribution (median, 37 years; interquartile range, 28–46 years) relative to women (median, 26 years; interquartile range, 21–34 years). Among women, 20- to 24-year-olds consistently had the highest reporting rate, reaching 9.0 per 100,000 in 2016. Congenital syphilis reports increased from 0.4 in 2012 to 1.4 per 100,000 live births in 2016. Although Tokyo prefecture had the highest reporting rate (3.98 per 100,000 person-years), the proportionate contribution from Tokyo decreased in 2016.

Conclusions

Reports on P&S syphilis increased yearly among MSW and WSM. Young women seem to be at particular risk, and with increased reports of congenital syphilis, syphilis prevention and control is currently a public health priority in Japan.
Prepectoral Immediate Direct-to-Implant Breast Reconstruction with Anterior AlloDerm Coverage
Authors: Jones Glyn , Yoo Aran , King Victor , Jao Brian , Wang Huaping , Rammos Charalambos , Elwood Eric
Published: November 2017

Background:

Staged subpectoral expander-implant breast reconstruction is widely performed. Disruption of the pectoralis major origin and the frequent occurrence of animation deformity and functional discomfort associated with subpectoral reconstruction remain ongoing concerns. Prepectoral single-stage direct-to-implant reconstruction resolves many of these issues. In this study, the authors explored the rationale for prepectoral single-stage implant-based breast reconstruction with anterior AlloDerm coverage as an alternative to the staged approach.

Methods:

Seventy-three breasts in 50 patients were reconstructed using a single-stage direct-to-implant prepectoral approach with total anterior AlloDerm coverage during a 24-month period. The decision to proceed with single-stage reconstruction was predicated upon the adequacy of mastectomy skin flap blood flow based on indocyanine green fluorescence perfusion assessment. The patients were followed up for a maximum of 32 months.

Results:

Ninety-seven percent of patients achieved complete healing within 8 weeks. There were 2 implant losses (2.7%) due to infection. Major seroma rate requiring repeated aspiration and drain insertion was 1.2%. There were no full-thickness skin losses. Capsular contracture was 0% in nonradiated patients. There were no cases of animation deformity. The authors were unable to establish significant correlation between complications and any of the usually stated risk factors, such as smoking, obesity, and large mastectomy weights, presumably due to the rigorous application of intraoperative skin perfusion assessment.

Conclusion:

Single-stage direct-to-implant reconstruction using a prepectoral approach appears to be a safe and effective means of breast reconstruction in many patients, assuming adequate skin perfusion is present.
Evidence-Based Medicine: Abdominoplasty
Authors: Gutowski Karol A.
Published: November 2017

Learning Objectives:

After reading this article, the participant should be able to: 1. Differentiate between techniques for standard abdominoplasty and lipoabdominoplasty. 2. Assess patients for risk associated with abdominoplasty alone and combined with other procedures. 3. Implement newer modalities for abdominoplasty perioperative pain management. 4. Better understand the implications and techniques for rectus diastasis correction by rectus sheath plication. 5. Understand the evidence for eliminating the need for drains in abdominoplasty.

This update to past Maintenance of Certification articles offers new perspectives and builds on past knowledge regarding patient assessment, perioperative management, surgical execution, and complications of abdominoplasty.
Effect of Age on High T1 Signal Intensity of the Dentate Nucleus and Globus Pallidus in a Large Population Exposed to Gadodiamide
Authors: Quattrocchi Carlo Cosimo , Errante Yuri , Mallio Carlo Augusto , Marinelli Luca , LoVullo Gianguido , Giannotti Gabriele , Della Sala Sabino Walter , van der Molen Aart J. , Beomonte Zobel Bruno
Published: November 2017

Objective

The purpose of this study was to assess the effect of age and number of previous injections of gadodiamide on the signal intensity of unenhanced T1-weighted (T1w) images of the dentate nucleus and globus pallidus in a large population.

Materials and Methods

A large, single-center retrospective population survey was designed and received institutional review board approval. Between January 2014 and December 2014, T1w signal intensity ratios were obtained from a large population of 2500 consecutive enhanced brain magnetic resonance imaging (MRI) scans. Of these, 1906 MRI scans of patients not previously exposed to any gadolinium (Gd)-based contrast agent were used as control group and were compared with 892 MRI scans of patients with documented prior exposure to intravenous gadodiamide. A quantitative study was conducted to assess the T1w signal intensity of dentate nucleus-to-pons (Dn/Po) and globus pallidus-to-thalamus (Gp/Th) ratios. Multiple regression analysis was used to test the effect of age, time delay, and number of previous Gd-based contrast agent injections as predictor variables of T1w signal intensity ratios.

Results

In the Gd-exposed patients, multivariate regression analysis showed age (β = −0.285; P < 0.0001) and the number of previous injections of gadodiamide (β = 0.224; P < 0.0001) to be powerful predictors of Dn/Po ratio. Similarly, age (β = 0.269; P < 0.0001) and the number of previous injections of gadodiamide (β = 0.127; P < 0.0001) predicted Gp/Th ratio.

Conclusions

In this study, we confirm that the number of previous gadodiamide injections is a powerful predictor of the signal intensity increase of the Dn/Po and Gp/Th ratios on unenhanced T1w images and demonstrate that aging influences the T1 signal intensity of DN and GP in Gd-naïve and in Gd-exposed subjects.
Testicular Estrogen-Secreting Leydig Cell Tumor in 18F-FDG PET/CT
Authors: Van Der Gucht Axel , Maged Zaher , Burruni Rodolfo , Barras Jean-Luc , Schaefer Niklaus
Published: November 2017

We present images of a 50-year-old man who referred for treatment of a classic Hodgkin lymphoma. While 18F-FDG PET/CT demonstrated a complete metabolic remission after chemotherapy, an increased 18F-FDG uptake of a right testicular lesion in 18F-FDG PET/CT and an unexplained bilateral gynecomastia were observed. A benign Leydig cell tumor was histopathologically proved after a right radical orchiectomy. The serum estradiol level was abnormally elevated reflecting the estrogen-secreting profile. This report highlights that a focal 18F-FDG uptake in the testicular region with unexplained gynecomastia should suggest the diagnosis of an estrogen-secreting Leydig cell tumor on 18F-FDG PET/CT.
Pseudolesions Impersonating Osseous Tumor Involvement on Both Contrast Enhanced CT and FDG PET/CT
Authors: Peterson Jessica K. , Morgan Rustain L. , Donald Joseph S. , Perry Mark A.
Published: November 2017

A 27-year-old man with stage IV-B Hodgkin's lymphoma status post autologous peripheral stem cell transplant in 2015 with complete response, presented in 2017 with increasing back pain. Restaging contrast enhanced CT demonstrated left brachiocephalic vein occlusion with peripheral nodular high density areas within C7–T2 vertebral bodies with corresponding radiotracer uptake on same day PET/CT. No matching lesion was seen on noncontrast CT. Findings were consistent with pooling of contrast and radiotracer within vertebral venous plexus collaterals at the cervicothoracic junction secondary to brachiocephalic vein occlusion. Repeat PET/CT with contralateral injection of radiotracer and MRI confirmed absence of osseous lymphomatous involvement.
Multiple Hypermetabolic Subcutaneous Lesions From Hidradenitis Suppurativa Mimicking Metastases on 18F-FDG PET/CT
Authors: Asamoah Philip , Wale Daniel J. , Viglianti Benjamin L. , Wong Ka Kit , Gross Milton
Published: November 2017

Hidradenitis suppurativa is an inflammatory disease associated with subcutaneous nodules/abscesses that occur commonly in the axillary, inguinal, and perineal regions. We describe a case of a 64-year-old man presenting for 18F-FDG PET/CT for staging of a left vocal cord squamous cell carcinoma. The scan showed uptake in the left vocal cord malignancy and multiple hypermetabolic subcutaneous foci in the right axilla, right buttocks, and scalp in known locations of skin lesions related to hidradenitis suppurativa. This case illustrates an unusual inflammatory cause of 18F-FDG incidental uptake that should not be mistaken for metastases.
Spontaneous oscillations of elastic filaments induced by molecular motors
Authors: De Canio Gabriele , Lauga Eric , Goldstein Raymond E.
Published: November 2017

It is known from the wave-like motion of microtubules in motility assays that the piconewton forces that motors produce can be sufficient to bend the filaments. In cellular phenomena such as cytosplasmic streaming, molecular motors translocate along cytoskeletal filaments, carrying cargo which entrains fluid. When large numbers of such forced filaments interact through the surrounding fluid, as in particular stages of oocyte development inDrosophila melanogaster, complex dynamics are observed, but the detailed mechanics underlying them has remained unclear. Motivated by these observations, we study here perhaps the simplest model for these phenomena: an elastic filament, pinned at one end, acted on by a molecular motor treated as a point force. Because the force acts tangential to the filament, no matter what its shape, this ‘follower-force’ problem is intrinsically non-variational, and thereby differs fundamentally from Euler buckling, where the force has a fixed direction, and which, in the low-Reynolds-number regime, ultimately leads to a stationary, energy-minimizing shape. Through a combination of linear stability theory, analytical study of a solvable simplified ‘two-link’ model and numerical studies of the full elastohydrodynamic equations of motion, we elucidate the Hopf bifurcation that occurs with increasing forcing of a filament, leading to flapping motion analogous to the high-Reynolds-number oscillations of a garden hose with a free end.
Spinal excitability is increased in the torque-depressed isometric steady state following active muscle shortening
Authors: Sypkes Caleb T. , Kozlowski Benjamin , Grant Jordan , Bent Leah R. , McNeil Chris J. , Power Geoffrey A.
Published: November 2017

Torque depression (TD) is the reduction in steady-state isometric torque following active muscle shortening when compared with a purely isometric contraction at the same muscle length and level of activation. The purpose of the present study was to assess spinal and supraspinal excitability in the TD state during submaximal contractions of the dorsiflexors. Eleven young (24 ± 2 yrs) males performed 16 contractions at a constant level of electromyographic activity (40% of maximum). Half of the contractions were purely isometric (8 s at an ankle angle of 100°), whereas the other half induced TD (2 s isometric at 140°, a 1 s shortening phase at 40° s−1and 5 s at 100°). Motor evoked potentials (MEPs), cervicomedullary motor evoked potentials (CMEPs) and compound muscle action potentials (M-waves) were recorded from tibialis anterior during the TD steady-state and purely isometric contractions. When compared with values in the purely isometric condition, following active shortening, there was a 13% decrease in torque (p < 0.05), with a 10% increase in normalized CMEP amplitude (CMEP/Mmax) (p < 0.05) and no change in normalized MEP amplitude (MEP/CMEP) in the TD state (p > 0.05). These findings indicate that during voluntary contractions in the TD state, the history-dependent properties of muscle can increase spinal excitability and influence voluntary control of submaximal torque production.
The shape of the contact–density function matters when modelling parasite transmission in fluctuating populations
Authors: Borremans Benny , Reijniers Jonas , Hens Niel , Leirs Herwig
Published: November 2017

Models of disease transmission in a population with changing densities must assume a relation between infectious contacts and density. Typically, a choice is made between a constant (frequency-dependence) and a linear (density-dependence) contact–density function, but it is becoming increasingly clear that intermediate, nonlinear functions are more realistic. It is currently not clear, however, what the exact consequences would be of different contact–density functions in fluctuating populations. By combining field data on rodent host (
Mastomys natalensis
) demography, experimentally derived contact–density data, and laboratory and field data on Morogoro virus infection dynamics, we explored the effects of different contact–density function shapes on transmission dynamics and invasion/persistence. While invasion and persistence were clearly affected by the shape of the function, the effects on outbreak characteristics such as infection prevalence and seroprevalence were less obvious. This means that it may be difficult to distinguish between the different shapes based on how well models fit to real data. The shape of the transmission–density function should therefore be chosen with care, and is ideally based on existing information such as a previously quantified contact– or transmission–density relationship or the underlying biology of the host species in relation to the infectious agent.
Crystallographic and computational study of a network composed of [ZnCl4]2− anions and triply protonated 4′-functionalized terpyridine cations
Authors: Granifo Juan , Suárez Sebastián , Boubeta Fernando , Baggio Ricardo
Published: November 2017

We report herein the synthesis, crystallographic analysis and a study of the noncovalent interactions observed in the new 4′-substituted terpyridine-based derivative bis[4′-(isoquinolin-2-ium-4-yl)-2,2′:6′,2′′-terpyridine-1,1′′-diium] tris[tetrachloridozincate(II)] monohydrate, (C24H19N4)2[ZnCl4]3·H2O or (ITPH3)2[ZnCl4]3·H2O, where (ITPH3)3+ is the triply protonated cation derived from 4′-(isoquinolin-4-yl)-2,2′:6′,2′′-terpyridine (ITP) [Granifo et al. (2016). Acta Cryst. C72, 932–938]. The (ITPH3)3+ cation presents a number of interesting similarities and differences compared with its neutral ITP relative, mainly in the role fulfilled in the packing arrangement by the profuse set of D—H...A [D (donor) = C, N or O; A (acceptor) = O or Cl], π–π and anion...π noncovalent interactions present. We discuss these interactions in two different complementary ways, viz. using a point-to-point approach in the light of Bader's theory of Atoms In Molecules (AIM), analyzing the individual significance of each interaction, and in a more `global' analysis, making use of the Hirshfeld surfaces and the associated enrichment ratio (ER) approach, evaluating the surprisingly large co-operative effect of the superabundant weaker contacts.
Luxury retailers’ entry and expansion strategies in China
Authors: Bai Huifeng , McColl Julie , Moore Christopher
Published: November 2017

Purpose

The purpose of this paper is to examine internationalising luxury fashion retailers’ entry and post-entry expansion strategies in mainland China.

Design/methodology/approach

The study adopts a pragmatic mixed-methods research approach, including a quantitative mail survey and qualitative face-to-face in-depth executive interviews.

Findings

Different from initial single entry methods, multiple methods are increasingly popular for luxury fashion retailers’ post-entry expansion in mainland China. Although directly controlled expansion strategies have become significant, local partnerships are still important and omnichannel distribution strategies are rapidly growing.

Research limitations/implications

The findings were generated in mainland China only.

Originality/value

This work provides an understanding of luxury fashion retailers’ activities in the Chinese market from both macro and micro perspectives. It examines luxury fashion retailers’ initial entry strategies, as well as their post-entry expansion strategies in mainland China. Few studies in the area of international luxury fashion retailing have employed a mixed-methods approach with this number of participants.
Selfie-marketing: exploring narcissism and self-concept in visual user-generated content on social media
Authors: Fox Alexa K. , Bacile Todd J. , Nakhata Chinintorn , Weible Aleshia
Published: November 2017

Purpose

The present research aims to examine selfie-marketing from a consumer behavior perspective. Creating and sharing selfies are gaining popularity among millennials. The authors seek to understand how this popularity relates to classic research on narcissism and self-concept and to determine the effectiveness of selfie-marketing in visual user-generated content.

Design/methodology/approach

A mixed methods approach is used across two studies. Study 1’s qualitative exploration uses the grounded theory method by analyzing semi-structured interviews with millennials. The findings produce three research propositions. These propositions are further developed into testable hypotheses in Study 2’s quantitative investigation, featuring analysis of the variance of online survey data collected from millennials.

Findings

The findings suggest that narcissism positively relates to millennials’ attitudes toward and intent to participate in selfie-marketing on visual content-sharing apps. Results also demonstrate that millennials seek to use selfies to present their self-concepts differently in various visual content-sharing environments.

Originality/value

The present research is among the first to focus on the importance of self-presentation and narcissism in regard to consumers’ attitudes and behavioral responses toward selfie-marketing. For marketers, this underscores the importance of understanding the unique nature of user-generated visual content on social media.
The impact of disgust on consumers’ purchase intentions: an empirical assessment
Authors: Guido Gianluigi , Pino Giovanni , Peluso Alessandro M.
Published: November 2017

Purpose

This study adds to the research on disgust by proposing a theoretical framework encompassing contamination-based, moral and structural disgust dimensions. The study empirically assesses the impact of these three dimensions on consumers’ purchase intentions for different product categories.

Design/methodology/approach

The study investigates consumer reaction to disgusting stimuli related to attractiveness, expertise and trustworthiness products by means of closed-ended questionnaires administered to three consumer samples.

Findings

Contamination-based disgust reduces the intention to purchase expertise products. Similarly, structural disgust reduces the intention to purchase trustworthiness products. Moral disgust seems to have a positive effect on the intention to purchase attractiveness products.

Research limitations/implications

Marketing strategies for expertise and trustworthiness products should emphasize their pureness and capacity to match consumer expectations, respectively. Ad hoc strategies centered on moral disgust could be designed for attractiveness products.

Originality/value

This study proposes a new conceptualization of consumer disgust and shows that the identified disgust dimensions have different effects on consumer intention to purchase attractiveness, expertise and trustworthiness products.
Arab women’s educational leadership and the implementation of social justice in schools
Authors: Arar Khalid
Published: November 2017

Purpose

The purpose of this paper is to focus on gender and social justice (SJ) among pioneer female principals and superintendents in the Arab education system in Israel. The research questions were: what motivated these women to act for SJ? Are there common personal characteristics and educational values which characterize these women? What actions have they taken to apply SJ through their work?

Design/methodology/approach

Four superintendents and two principals participated in in-depth interviews, describing their careers in education and their contributions.

Findings

The findings indicate that these women were highly motivated often by their backgrounds to right social wrongs upholding values of equality and justice and empowering others to succeed. They employed leadership skills that initiate a strong desire to succeed and challenged inegalitarian rules and norms. They brought their unique feminine strengths and experience to promote social goals far beyond requirements of their official job descriptions. Hopefully their views and actions can guide the Arab education system to pedagogy that rectifies social injustice includes students and empowers teachers.

Originality/value

It is concluded that through their jobs these women leaders were able to initiate a policy of change and promote a new educational agenda.
Carbon copy
Authors: Reveley James , Singleton John
Published: November 2017

Purpose

By juxtaposing fatal colliery explosions in early twentieth-century Britain and in 2010 at Pike River, New Zealand, this paper aims to investigate the generalizability of the mock bureaucracy concept to underground coal mining disasters.

Design/methodology/approach

The main source is published official accident inquiries; a methodological reflection justifies the use of these materials.

Findings

Mock bureaucracies existed in the British underground coal mining milieu from the time when safety rules were first formulated in that industry context. As for Pike River, it is an exemplary case. The development in 1970s Britain of a new approach to safety management (the Robens system), and its subsequent export to New Zealand, means that a contemporary coal mine under financial duress, such as Pike River, is a prime site for mock bureaucracy to flourish.

Originality/value

Although the concept of mock bureaucracy has been applied to an explosion in an underground coal mine before, this is the first paper to explore the concept’s historical usage and generalizability in explaining the environing context of such explosions.
Characteristics of mental health recovery model implementation and managers’ and clinicians’ risk aversion
Authors: Crowe Sally , Deane Frank
Published: November 2017

Purpose

The purpose of this paper is to investigate the relationships between clinicians’ and managers’ risk aversion and a range of variables related to the implementation of the Collaborative Recovery Model (CRM). Positive risk taking is an integral component of the recovery process. Clinicians’ risk aversion has the potential to negatively impact on their implementation of recovery-oriented practices. The CRM provides an evidence-based framework to assist consumers to participate in the recovery process. However, there is a need for research to clarify the factors related to recovery that have impact on managers’ and clinicians’ risk aversion, and ultimately on implementation of recovery practices.

Design/methodology/approach

A cross-sectional survey assessed clinicians’ (n=174) and managers’ (n=48) risk aversion and their self-reported learning experiences, commitment to using CRM, goal setting attitudes and CRM implementation behaviour.

Findings

Clinicians who reported more risk aversion were significantly more likely to report positive attitudes towards goal setting. Stepwise regression revealed that training experiences, goal setting attitudes and commitment to CRM significantly predicted an increase in CRM implementation. Over and above this, risk aversion predicted a small but significant increase in the self-reported use of CRM. Managers experienced significantly less risk aversion than clinicians, with a negative relationship between risk aversion and commitment to CRM principles.

Originality/value

This paper suggests that clinicians’ risk aversion impacts upon their implementation of the CRM, with managers less risk averse than clinicians.
Product recommendation incorporating the consideration of product performance and customer service factors
Authors: Li Yong-Hai , Fan Zhi-Ping , Qiao Guang-Hui
Published: November 2017

Purpose

The purpose of this paper is to present a novel framework for recommending desirable products to active customers with the consideration of not only their preferences but also the products’ quality performances and their e-retailers’ service performances under e-commerce.

Design/methodology/approach

A framework in support of the product recommendation is presented. Three modules are involved in the framework, i.e. data collection and preference analysis module, hybrid recommendation module and recommendation generation module. First, preferences of different types of customers are inferred through analysis of their behavioral data and then a paradigm is adopted based on cased-based reasoning to generate candidate recommendation products. Further, recommendation lists for different types of customers are obtained through measurement of the quality and service performances concerning each candidate recommendation product.

Findings

To illustrate the performance of the presented framework, a simulation study comparing the approach developed based on the framework and the traditional approach is conducted. The experiment results show that the developed approach outperformed the traditional approach in term of average rank score. This means that incorporating the consideration of product performance and customer service factors can play an important role in product recommendations.

Originality/value

The presented framework can overcome the defect that low conversion rate of recommended products to actually purchased ones suffered by the traditional approach. In addition, the use of the presented framework can not only help customers to obtain desirable products and save searching time but also supervise and urge e-retailers to pay more attention to the quality and service performances.
Do the effects of individual factors on financial risk-taking behavior diversify with financial literacy?
Authors: Dinç Aydemir Sibel , Aren Selim
Published: November 2017

Purpose

This study aims to examine the roles of individual factors on risky investment intention as an indicator of risky financial behavior.

Design/methodology/approach

The data were collected from a survey instrument and composed of 496 individuals’ responses. The authors exploited structural equation modelling and multigroup structural equation modelling for direct and indirect effects, respectively.

Findings

Results indicate that emotional intelligence and locus of control have a positive impact on financial risk-taking, while risk aversion in general has the negative one. Although financial literacy does not have a direct effect on risky financial behavior, it has important role as a moderator variable, interacting with external locus of control.

Originality/value

The authors expect this study to contribute into behavioral finance literature in two ways. First, they investigate joint and relative effects of four major factors (i.e. emotional intelligence, locus of control, risk aversion in general and financial literacy) identified in the literature on financial risk-taking of individual investors. Each belongs to a different venue in an individual’s psyche and therefore is expected to influence financial risk-taking through different mechanisms. However, the research arguing their roles on the financial risky behavior directly is very limited. Investigating their individual effects is likely to provide unique insights into our understanding of risky financial behavior. Second, the authors also posit and manifest that the effects of the first three of the aforementioned factors on risk-taking intentions are moderated by financial literacy. This finding is likely to provide rather valuable insights pertaining to the emergence of risk-taking behaviors and may shed light on the root reasons behind equivocal findings in previous research regarding the effect of each factor.
The practice of talent management: a framework and typology
Authors: Bolander Pernilla , Werr Andreas , Asplund Kajsa
Published: November 2017

Purpose

The purpose of this paper is to contribute to the development of a deeper understanding of the conceptual and empirical boundaries of talent management (TM) so that scholars and practitioners may enhance their knowledge of what TM actually is and how it is carried out.

Design/methodology/approach

A comparative study was conducted of the TM practices of 30 organizations based in Sweden. Data were collected through in-depth interviews with 56 organizational representatives. The transcribed interviews were analyzed using qualitative content analysis.

Findings

The findings comprise a typology consisting of four distinct TM types that exist in practice: a humanistic type, a competitive type, an elitist type and an entrepreneurial type. Descriptions are provided that probe into how specific practices are differently shaped in the different types.

Research limitations/implications

The study design enabled the generation of an empirically rich understanding of different TM types; however, it limited the authors’ ability to draw systematic conclusions on the realized outcomes of different types of TM.

Practical implications

The descriptions of different TM types give practitioners insight into how TM may be practiced in different ways and point to important decisions to be made when designing TM.

Originality/value

The paper addresses two main shortcomings identified in the academic literature on TM: conceptual ambiguity and the paucity of in-depth empirical research on how TM is carried out in actual organizational settings. The empirically derived typology constitutes an important step for further theory development in TM.
High-performance work system and employee creativity
Authors: Tang Guiyao , Yu Bingjie , Cooke Fang Lee , Chen Yang
Published: November 2017

Purpose

The purpose of this paper is to examine the underlying mechanism through which high-performance work system (HPWS) influences employee creativity. In addition, this paper aims to examine contingent factors in the relationship between perceived organisational support and employee creativity.

Design/methodology/approach

The sample of the study included 268 employees and matched supervisors from two pesticide chemical companies in China. Hypotheses were tested with linear regressions.

Findings

The study shows that HPWS enhances perceived organisational support, which in turn promotes employee creativity. Moreover, the results also indicate that devolved management positively moderates the relationship between perceived organisational support and employee creativity.

Research limitations/implications

The unique environment of China may limit the generalisability of the findings. Future studies can extend these findings by conducting studies in other societal contexts.

Practical implications

When trying to inspire employee creativity, organisations need to pay attention to employees’ perception of organisational support. One way of enhancing perceived organisational support is to implement HPWS. In addition, organisations need to encourage devolved management in order to inspire more creative behaviours.

Originality/value

This is the first study that explores the mediating role of perceived organisational support in the HPWS-employee creativity linkage. In addition, the study provides what is believed to be the first test of the moderating role of devolved management.
Employee share ownership and organisational performance: a tentative opening of the black box
Authors: Whitfield Keith , Pendleton Andrew , Sengupta Sukanya , Huxley Katy
Published: November 2017

Purpose

A range of studies have shown that performance is typically higher in organisations with employee share ownership (ESO) schemes in place. Many possible causal mechanisms explaining this relationship have been suggested. These include a reduction in labour turnover, synergies with other forms of productivity-enhancing communication and participation schemes, and synergies with employer-provided training. The paper aims to discuss these issues.

Design/methodology/approach

This paper empirically assesses these potential linkages using data from the 2004 and 2011 British Workplace Employment Relations Surveys, and provides comparisons with earlier analyses conducted on the 1990 and 1998 versions of the survey.

Findings

Substantial differences are found between the 2004 and 2011 results: a positive relationship between ESO and workplace productivity and financial performance, observed in 2004, is no longer present in 2011. In both years, ESO is found to have no clear relationship with labour turnover, and there is no significant association between turnover and performance. There is, however, a positive moderating relationship with downward communication schemes in 2004 and in 2011 in the case of labour productivity. There is no corresponding relationship for upward involvement schemes.

Research limitations/implications

The results are only partially supportive of extant theory and its various predictions, and the relationship between ESO and performance seems to have weakened over time.

Originality/value

The study further questions the rhetoric offered in support of wider ESO.
Why sharing is synergy
Authors: Maatman Marco , Meijerink Jeroen
Published: November 2017

Purpose

HR shared service centers (SSCs) have been claimed to innovate human resource management service delivery by centralizing resources and decentralizing control and, in doing so, create value for other business units. In response, to explain the value of HR shared services for the business units served, the purpose of this paper is to test hypotheses on the joint influence of HR SSC operational and dynamic capabilities and of control mechanism usage by the business units.

Design/methodology/approach

A survey methodology was applied to collect data among business unit representatives from 91 business units in 19 Dutch organizations. The data were analyzed using structural equation modeling in AMOS.

Findings

This study found that the use of formal control mechanisms (e.g. contracts, service-level agreements) relates negatively with HR shared service value, but that this relationship becomes positive once mediated by informal control mechanisms (e.g. trust and shared language) and operational HR capabilities. Furthermore, it shows that the dynamic capabilities of HR SSCs relate positively to HR shared service value for the business units, but only because of their effect on operational capabilities.

Originality/value

Whereas previous studies into HR SSCs have examined the two antecedents independently, this study shows how organizational control and capabilities interrelate in explaining the value of HR shared services.
HRM and innovative work behaviour: a systematic literature review
Authors: Bos-Nehles Anna , Renkema Maarten , Janssen Maike
Published: November 2017

Purpose

Although we know that HRM practices can have a huge impact on employees’ innovative work behaviour (IWB), we do not know exactly which practices make the difference and how they affect IWB. Thus, the purpose of this paper is to determine the best HRM practices for boosting IWB, to understand the theoretical reasons for this, and to discover mediators and moderators in the relationship between HRM practices and IWB.

Design/methodology/approach

Based on a systematic review of the literature, the authors carried out a content analysis on 27 peer-reviewed journal articles.

Findings

Working with the definitions and items provided in the articles, the authors were able to cluster HRM practices according to the ability-motivation-opportunity framework. The best HRM practices for enhancing IWB are training and development, reward, job security, autonomy, task composition, job demand, and feedback.

Practical implications

The results of this study provide practical information for HRM professionals aiming to develop an HRM system that generates innovative employee behaviours that might help build an innovative climate.

Originality/value

A framework is presented that aggregates the findings and clarifies which HRM practices influence IWB and how these relationships can be explained.
Effect of process parameters on the surface crack density of AISI 304 in PMEDM
Authors: Bhaumik Munmun , Maity Kalipada
Published: November 2017

Purpose

In this study, powder mixed electro discharge machining (PMEDM) has been performed for the machining of AISI 304 stainless steel by using the tungsten carbide electrode when silicon carbide (SiC) powder is mixed with kerosene. The purpose of this study is to find the optimal value and ascertain the effect of significant machining parameters on surface crack density (SCD) of a machined surface of AISI 304.

Design/methodology/approach

A face-centered central composite design-based response surface methodology has been adopted for designing this experiment.

Findings

An increase in peak current and powder concentration decreases SCD, which is the main goal of this investigation.

Originality/value

From this investigation, an optimal value has been achieved to minimize the SCD and prevent fatigue and corrosion resistance of the workpiece.