bluuebunny/crossref_metadata_2025_split huggingface dataset:
Superior Canal Dehiscence Syndrome: Relating Clinical Findings With Vestibular Neural Responses From a Guinea Pig Model
Authors: Dlugaiczyk Julia , Burgess Ann M. , Goonetilleke Samanthi C. , Sokolic Ljiljana , Curthoys Ian S. 
Published: March 2019

Hypothesis:
In superior canal dehiscence (SCD), fluid displacement of the endolymph activates type I vestibular hair cells in the crista of the affected canal and thus irregular superior canal (SC) neurons in Scarpa's ganglion, which provides the neurophysiological basis for the clinical presentation of SCD.

Background:
Patients with SCD display sound- and vibration-induced vertigo/nystagmus and increased amplitudes of vestibular evoked myogenic potentials.

Methods:
Extracellular recordings from n = 25 primary vestibular neurons of 16 female guinea pigs were analyzed. We recorded from the same vestibular neuron before, during and after creating the dehiscence and after closing the dehiscence. Neurobiotin labeling was employed in n = 11 neurons.

Results:
After SCD, previously unresponsive irregular SC neurons displayed a stimulus-locked increase in discharge during application of air-conducted sound (ACS) or bone-conducted vibration (BCV) for a broad range of frequencies (ACS: 200–4000 Hz; BCV: 500–1500 Hz). This typical response was only observed for irregular SC neurons (n = 19), but not regular SC neurons, or irregular/regular horizontal canal neurons (n = 2 each), and was abolished after closing the dehiscence. Eleven irregular SC neurons responsive to ACS and/or BCV were traced back to calyx synapses in the central crista of the affected superior canal by neurobiotin labeling.

Conclusions:
Stimulus-locked activation of irregular SC neurons by ACS and BCV is the neurophysiological basis for sound- and vibration-induced vertigo/nystagmus and increased VEMP amplitudes in SCD. The results of the present study help to improve vestibular diagnostics in patients with suspected SCD.
The Prevalence of Superior Semicircular Canal Dehiscence in Patients With Mastoid Encephalocele or Cerebrospinal Fluid Otorrhea
Authors: Oh Melissa S. , Vivas Esther X. , Hudgins Patricia A. , Mattox Douglas E. 
Published: March 2019

Objective:
To evaluate the association between mastoid encephalocele or cerebrospinal fluid (CSF) otorrhea and concurrent superior semicircular canal dehiscence (SSCD).

Study Design:
Retrospective case-control study with chart and imaging review.

Setting:
University-affiliated tertiary referral center.

Patients:
A chart review was conducted of all patients greater than 18 years of age who had primary surgery for CSF otorrhea or encephalocele at our university-affiliated tertiary center from 2000 to 2016. Eighty-three patients matched inclusion criteria for case subjects, and 100 patients without CSF otorrhea or encephalocele were included for controls.

Main Outcome Measure:
High-resolution computed tomography (CT) scans were reviewed to assess superior semicircular canal roof integrity. Student's t test was used to determine significance of continuous variables. Odds ratio (OR) and χ2 test was used to determine the association between SSCD and concurrent mastoid encephalocele or CSF otorrhea compared with the control population.

Results:
The mean age of the 83 case subjects was 54 years, and 73% were women. In patients with confirmed encephalocele and CSF otorrhea, the prevalence of SSCD was 35%, which was significantly greater than controls (2%) (OR = 26.1, p < 0.001). In patients with only CSF otorrhea, 21% had concurrent SSCD (OR = 10.3, p = 0.001). In patients with SSCD, 46% had bilateral canal dehiscence.

Conclusions:
This is the largest study to evaluate the prevalence of SSCD in patients with concurrent mastoid encephalocele. This study showed a significant association between SSCD and the presence of both mastoid encephalocele and CSF otorrhea. This data suggests that surgeons should have a high suspicion for SSCD in patients presenting with encephalocele or CSF otorrhea.
Prolonged Air Leak After Pulmonary Resection Increases Risk of Noncardiac Complications, Readmission, and Delayed Hospital Discharge
Authors: Attaar Adam , Luketich James D. , Schuchert Matthew J. , Winger Daniel G. , Sarkaria Inderpal S. , Nason Katie S. 
Published: March 2019

Objective:The aim of the study was to determine whether prolonged air leak (PAL) is associated with postoperative morbidity and mortality following pulmonary resection after adjusting for differences in baseline characteristics using propensity score analysis.Summary Background Data:Patients with PAL after lung resection have worse outcomes than those without PAL. However, adverse postoperative outcomes may also be secondary to baseline risk factors, such as poor lung function.Methods:Patients who underwent pulmonary resection for lung cancer/nodules (1/2009–6/2014) were stratified by the presence of PAL [n= 183 with/1950 without; defined as >5 d postoperative air leak;n= 189 (8.3%)]; probability estimates for propensity for PAL from 31 pretreatment/intraoperative variables were generated. Inverse probability-of-treatment weights were applied and outcomes assessed with logistic regression.Results:Standardized bias between groups was significantly reduced after propensity weighting (mean = 0.18 before vs 0.08 after,P< 0.01). After propensity weighting, PAL was associated with increased odds of empyema (OR = 8.5;P< 0.001), requirement for additional chest tubes for pneumothorax (OR = 7.5;P< 0.001), blood transfusion (OR = 2;P= 0.03), pulmonary complications (OR = 4;P< 0.001), unexpected return to operating room (OR = 4;P< 0.001), and 30-day readmission (OR = 2;P= 0.009). Among other complications, odds of cardiac complications (P= 0.493), unexpected ICU admission (P= 0.156), and 30-day mortality (P= 0.270) did not differ. Length of hospital stay was prolonged (5.04 d relative effect, 95% confidence interval, 3.77–6.30;P< 0.001).Conclusions:Pulmonary complications, readmission, and delayed hospital discharge are directly attributable to having a PAL, whereas cardiac complications, unexpected admission to the ICU, and 30-day mortality are not after propensity score adjustment.
Diffusion of innovation through individual and collective entrepreneurship
Authors: Makhdoom Habib ur Rehman , Li Cai , Asim Shoaib 
Published: March 2019

PurposeThis paper aims to develop an original framework of innovation and to explore the complexity of association between individual and collective (team-based) entrepreneurship, and their simultaneous impacts on innovation in context of small and medium enterprises (SMEs).Design/methodology/approachAn integral theoretical framework is developed to encourage innovation and the hypothetical relations are tested with the help of structural equation modeling (SEM) through AMOS. Data were gathered through survey technique and the questioners were distributed through email among 700 entrepreneurs from SMEs operating in five major industrial cities of Punjab province Pakistan.FindingsThe results of SEM analyses confirm that both the individual entrepreneur and the collective efforts of all the business members contribute to innovation in SMEs. Entrepreneur’s personality traits have a direct positive impact on innovation while the centralized decision-making by entrepreneur is not associated with innovation. Centralized decision-making is found to be negatively associated with communication and have insignificant positive association with collaboration. Factors associated with the team-based entrepreneurship like communication and collaboration among members of the SME’s contribute to the entrepreneurial orientation and collective entrepreneurship. Entrepreneurial orientation and collective entrepreneurship have direct positive impact on innovation in SMEs.Practical implicationsIt is imperative for SMEs to encourage decentralized organizational culture and participative leadership to bring innovation into their products and processes and further to improve their competitive advantage.Originality/valueTo the best of author knowledge, present study is a first attempt that explores the complex association between individual and team-based entrepreneurship and further, empirically investigate the simultaneous impacts of these variables on innovation in context of SMEs.
Intangible investments and voluntary delisting
Authors: Agyei-Boapeah Henry , Wang Yuan , Tunyi Abongeh A. , Machokoto Michael , Zhang Fan 
Published: March 2019

Purpose
Drawing on a cost–benefit perspective, this paper aims to explore the relation between information asymmetry and the decision to delist from stock exchanges during periods of uncertainty. Specifically, it investigates the role of firms’ intangible investments and the availability of alternative sources of finance on the decision to delist from foreign stock markets.

Design/methodology/approach
The study takes advantage of a natural experiment in which cross-listed Chinese firms facing uncertainty in US markets because of widespread allegations of accounting fraud decide on whether to remain listed or voluntarily delist. The decision to delist is modelled as a function of the level of information asymmetry between firms and their stakeholders and the availability of alternative financing, while controlling for other drivers of firms’ delisting decision. The data used in the empirical analyses cover a hand-collected sample of 91 Chinese firms voluntarily delisting from US stock markets between 2010 and 2016. This sample is matched with an equal sample of Chinese firms, which remained listed in US stock markets during the same period. A probit regression model accounting for fixed effects is used.

Findings
There is a significant positive relationship between investments in intangible assets and firms’ decision to delist. Moreover, the positive intangibles−delisting nexus is accentuated by the availability of alternative sources of financing. Collectively, the results are consistent with the theoretical argument that the higher information asymmetry associated with intangible assets may increase the cost of staying listed on stock exchanges, particularly in periods of uncertainty (captured in this study by accounting fraud allegations targeting cross-listed firms). The results have important implications for corporate managers, capital market participants and policymakers.

Practical implications
Policymakers and standard setters must continue to work to improve the accounting regulations of intangible assets and to promote the adoption of global accounting standard across both emerging and advanced economies.

Originality/value
The study exploits a unique natural experimental setting to explore why cross-listed firms delist. The underlying theoretical framework to explain delisting is new. This framework captures the role of information asymmetry, uncertainty and alternative financing in explaining the cost and benefits of remaining listed on a foreign market.
Factors affecting Palestinian customers’ use of online banking services
Authors: Salem Mohammed Z. , Baidoun Samir , Walsh Grace 
Published: March 2019

PurposeThe purpose of this paper is to examine factors that affect Palestinian customers’ use of online banking services.Design/methodology/approachAn empirical study was conducted using a questionnaire in order to test the hypotheses. The questionnaire was distributed to 500 respondents selected by the participating banks. A total of 369 complete questionnaires were returned. The study’s independent variables include technology adoption propensity, customers’ value for online personalization, customers’ privacy concern, e-trust, technological leadership and loyalty. Palestinian customers’ usage of online banking services is the dependent variable.FindingsThe results of the model tested clearly suggest that the use of online banking services is influenced, respectively, by the technological leadership, e-trust, e-loyalty, customers’ value for online personalization, customers’ concern for privacy and propensity of technology adoption. Finally, this paper suggests that policy makers should develop a prioritized hierarchy of actions in developing the effective use of bank’s online services, based on thet- andp-values of the latter mentioned factors.Research limitations/implicationsOne limitation of the study is relying on self-reported cross-sectional data collection, rather than longitudinal surveying. Despite such limitation, the study provides the Palestinian banking sector with recommendations to promote online banking services based on the empirically identified factors affecting such service adoption.Practical implicationsPalestinian banks should promote the adoption of online banking services by supporting personalization of services, privacy and trust. Customers should always be informed that their bank is among the first banks to introduce the latest state-of-the-art online services. Technology innovative and diverse online services should be offered by banks to attract customers.Originality/valueAlthough numerous research studies have studied the factors affecting customers in using electronic and online banking services, few studies have considered such usage in the developing countries, such as Arab countries in general and Palestine in particular. This is the first study to examine the factors affecting the adoption of online banking services in Palestine. This study provides empirical evidence to fill in the gap by providing a deeper understanding of the factors affecting the usage of online banking services in the country. The findings of this study can help decision makers in the Palestinian banks to develop practical plans that might accelerate and expand the adoption of online banking emphasizing personalized and trusted services offered with high level of security and privacy.
Housing prices in peninsular Malaysia: supported by income, foreign inflow or speculation?
Authors: Wong Wang Li , Lee Chin , Koong Seow Shin 
Published: March 2019

PurposeThis paper is motivated by a concern about the ability of the average Malaysian income to catch up with the rapidly increasing house prices in Peninsular Malaysia. Financial innovation in financial system now regards houses as a financial asset and speculation vehicle. Therefore, a house purchase is made to acquire not merely a necessity but also a financial asset which can generate future returns. Given the problems in the housing market, this paper aims to examine the determinants of house prices in Malaysia, including those such as income, population, foreign inflow and speculation.Design/methodology/approachThis study adopts panel data analyses, namely, the fixed effect model (FEM) and the pooled mean group (PMG), and uses data at state level in quarterly frequency, spanning from 2005Q1 to 2013Q4.FindingsBased on the results of FEM, these determinants influence house prices significantly. Moreover, the PMG results suggest that there is convergence in the model, which are indicated by the significant and negative sign of the error correction term. In conclusion, the rapidly increasing house price is not caused by speculation activities in the housing market. More precisely, Malaysian income is capable of catching up with the increasing house prices.Practical implicationsAs income remains to be one of the major drivers in influencing Malaysian house price, Malaysian Government shall continue the policies of supply low cost houses to the low-income groups and My First Home Scheme (SRP) by offering less stringent rules in applying house loan for the first-time house buyers.Originality/valueThis study used the actual data of foreign housing purchase obtained from Malaysia Valuation and Property Services Department to represent foreign inflow; therefore, the results will reflect the impact of foreign inflow in a better manner.
Developing a consensus-based measures for housing delivery in Dammam Metropolitan Area, Saudi Arabia
Authors: Alqahtany Ali 
Published: March 2019

Purpose
The purpose of this paper is to formulate a number of housing policies to address these two issues and meet the needs of Saudi families, in accordance with their social and economic characteristics.

Design/methodology/approach
The paper first provides a review of the housing policies in Saudi Arabia, highlights some of the global experiences in the field of housing and reviews the best lessons learned from those experiences. Then, the paper analyses the reality of the housing sector in Dammam Metropolitan Area (DMA) and discusses the most important results reached.

Findings
Finally, and based on the main findings, the paper puts forward a set of policies and actions recommended to improve housing sector in DMA.

Originality/value
The paper analyses the reality of the housing in DMA.
Logistics IS resources, organizational factors, and operational performance
Authors: Pan Xiaodan , Dresner Martin , Xie Yurong 
Published: March 2019

PurposeDrawing on the resource-based view and resource complementarity theory, the purpose of this paper is to investigate two research questions: To what extent are logistics information system (IS) resources associated with improved operational performance? And to what extent are these relationships contingent on organizational factors?Design/methodology/approachA conceptual model with a nested structure is presented to link logistics IS resources and organizational factors with operational performance. The findings are validated using a cross-sectional sample of secondary data from domestic logistics firms in China.FindingsThis paper extends existing operational-level measures for logistics IS resources into a three-tier tactical-level typology: inside-out resources (operation-focused IS, decision-focused IS and IS development capability); outside-in resources (relation-focused IS and market-focused IS); and spanning resources (IS integration capability and IS management capability). Though logistics IS resources, in general, are positively related to operational performance, inside-out IS resources have the most significant impact. Organizational factors, such as firm size, firm age and firm ownership, may enhance or suppress the effects of logistics IS resources on performance.Practical implicationsThe findings are valuable to both logistics firms and buyer firms in an emerging market, as logistics IS resources may affect costs and quality of logistics service. The tactical-level typology allows logistics firms to better plan for and manage emerging IS resources in a competitive environment.Originality/valueThis paper extends prior work regarding the complementary effects of logistics IS resources and organizational factors on operational performance. Logistics firms should carefully manage the three types of tactical-level IS resources according to their organizational environment to achieve a sustainable competitive advantage.
Structural-probabilistic modeling of fatigue failure under elastic-plastic deformation
Authors: Babich Dmytro , Bastun Volodymir , Dorodnykh Tatiana 
Published: March 2019

Purpose
The purpose of this paper is to consider an approximate model of accumulation of microdefects in a material under repeated loading which makes it possible to define theoretical parameters of the fatigue failure (durability, fatigue limit, etc.). The model is involving the relevant law of distribution of ultimate (yield) stresses in the material of these members in combination with the basic characteristics of main mechanical properties of a material (ultimate and yield stresses and associated standard deviations).

Design/methodology/approach
The model of fatigue failure of brittle and elastoplastic materials based on the use of the structural-probabilistic approach and up-to-date ideas on the mechanism of material fracture is proposed. The model combines statistical fracture criteria, which are expressed in terms of damage concentrations, with the approximate model of microcrack accumulation under repeating loading of the same level. According to these criteria, the fatigue failure begins with the accumulation of separation- or shear-type microdefects up to the level of critical values of their density.

Findings
The failure mechanism is associated with the accumulation of dispersed microdamages under repeated loading. The critical value of the density of the microdamages, which are identified with those formed either by separation or shear under static loading in consequence of simple tension, compression or shear, is accepted as the criterion of the onset of fatigue failure. The fatigue being low-cycle or high-cycle is attributed to accumulation of shear microdamages in the region of plastic deformation in the former case and microdamages produced by separation under elastic deformation in the latter one.

Originality/value
The originality of the paper consists in the following. The authors theoretically define parameters of the fatigue failure (durability, fatigue limit, etc.) using the model in combination with the statistical failure (yield) criteria appearing in the damage measures. The constructed fatigue diagram has discontinuities on the conditional boundary dividing domains with the shear-type and separation-type fractures of structural elements. Such results are supported by the experimental results.
Effectiveness of e-learning portal from students’ perspective
Authors: Chopra Gaurav , Madan Pankaj , Jaisingh Piyush , Bhaskar Preeti 
Published: March 2019

PurposeE-learning has become an increasingly prevalent learning approach in higher educational institutions due to the fast growth of internet technologies in India. This paper aims to mainly focus on evaluating the effectiveness of the e-learning experience from students’ perceptive.Design/methodology/approach“Survey” method has been used to collect the data with the help of a structured questionnaire from the students who have registered on COURSERA (www.coursera.org/) website for e-learning. The questionnaire consisted of two sections e-learning system and e-learning effectiveness. E-learning system included items related to system quality, information quality and service quality. E-learning effectiveness dimension included user satisfaction and net benefits. The items in this section were measured on a five-point Likert scale ranging from strongly disagrees to strongly agree. The data collected have been analyzed using the SPSS version 17.0 and AMOS version 21.0.FindingsResults show that system quality and service quality contribute more in e-learning system compared to information quality. Students perception may be that information available on the website may not be very useful as it’s a one-way mode of communication. The researcher also found that the three dimensions (system quality, service quality and information quality) of e-learning system contributes to user satisfaction and net benefits. Students are satisfied with e-learning websites and intent to continue to use it in future as well. They also found it beneficial as it helps them in career growth and making them employable.Originality/valueThis paper proposed a second-order model of e-learning system and a second-order model e-learning effectiveness. E-learning system has been defined by three first-order constructs: a system quality, service quality and information quality. E-learning effectiveness has been defined by two first-order constructs: a user satisfaction and net benefits. The predictability of the proposed model is high to explain the impact of e-learning system on e-learning effectiveness.