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Open Access
Article
Publication date: 6 November 2018

Candace Borders, Frank Hsu, Alexander J. Sweidan, Emily S. Matei and Robert G. Bota

Studies suggest deep brain stimulation (DBS) as a treatment modality for the refractory obsessive-compulsive disorder (OCD). It is unclear where to place the DBS. Various sites…

Abstract

Studies suggest deep brain stimulation (DBS) as a treatment modality for the refractory obsessive-compulsive disorder (OCD). It is unclear where to place the DBS. Various sites are proposed for placement with the ventral capsule/ventral striatum (VC/VS) among the most studied. Herein, we aim to summarize both quantitative Yale-Brown Obsessive-Compulsive Scale (YBOCS) data and qualitative descriptions of the participants' symptoms when given. A literature search conducted via PubMed yielded 32 articles. We sought to apply a standard based on the utilization of YBOCS. This yielded 153 distinct patients. The outcome measure we focused on in this review is the latest YBOCS score reported for each patient/cohort in comparison to the location of the DBS. A total of 32 articles were found in the search results. In total, 153 distinct patients' results were reported in these studies. Across this collection of papers, a total of 9 anatomic structures were targeted. The majority of studies showed a better response at the last time point as compared to the first time point. Most patients had DBS at nucleus accumbens followed by VC/VS and the least patients had DBS at the bilateral superolateral branch of the median forebrain bundle and the bilateral basolateral amygdala. The average YBOCS improvement did not seem to directly correlate with the percentile of patients responding to the intervention.

Well-controlled, randomized studies with larger sample sizes with close follow up are needed to provide a more accurate determination for placement of DBS for OCD.

Details

Mental Illness, vol. 10 no. 2
Type: Research Article
ISSN: 2036-7465

Keywords

Open Access
Article
Publication date: 11 September 2020

Le Khuong Ninh

This paper investigates the impact of education on output of rice farming households in Vietnam.

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Abstract

Purpose

This paper investigates the impact of education on output of rice farming households in Vietnam.

Design/methodology/approach

Given the literature review, this paper specifies three empirical models (i.e. linear constant coefficient model, partially nonlinear model and linear varied coefficient model) with variables that well describe the mechanism through which education affects output. The data were collected from 901 rice farming households randomly selected out of ten provinces and city in the Mekong River Delta (MRD) of Vietnam. The models are estimated using ordinary least squares (OLS) and Robinson's (1988) double residual estimators.

Findings

Estimates of the empirical models show that seed, fertilizer, labor and farm size have significant impacts on output of rice farming households while pesticide and herbicide do not. Education is also found to have a positive effect on output of rice farming households because it helps them better manage farms of larger size via combining various inputs in a more desirable way.

Originality/value

This paper confirms the positive impact of education on agricultural output, which implies that policies aiming to provide better education to rural people will greatly enhance their income as well as trigger long-term economic and agricultural growth.

Details

Journal of Economics and Development, vol. 23 no. 1
Type: Research Article
ISSN: 1859-0020

Keywords

Content available
Article
Publication date: 12 October 2021

Laura Jackman, Laura Galloway, Isla Kapasi, Rebecca Stirzaker and Andreea Mihut

This paper aims to explore experiences of poverty in the enterprise amongst people with a disability or long-term health challenges. This paper departs somewhat from established…

Abstract

Purpose

This paper aims to explore experiences of poverty in the enterprise amongst people with a disability or long-term health challenges. This paper departs somewhat from established wisdom about economic or financial drivers of enterprise by exploring why a disabled individual would start and continue to operate in a business where that business is providing income-poverty. In so doing, it subscribes to the idea that the enterprise involves reflexive engagement of an agent in context where value(s) of the enterprise other than financial may be prioritised.

Design/methodology/approach

The research draws from a larger qualitative study of self-employment and poverty in which half the sample (21 individuals) identified as experiencing disability or poor health. Semi-structured interviews were conducted these participants and a thematic analysis with specific reference to Theory of Venturing, which proposes that the value of enterprise is reflexively and idiosyncratically understood and morphogenetic, was used to explore itinerant issues, experiences and challenges.

Findings

In line with the theory, findings include that disability and poor health are observed to be both prompters and shapers of an enterprise and that the value of enterprise is not always primarily associated with financial wealth for the participants in the sample. Flexibility and autonomy are attractive features of self-employment for some in the face of an inflexible and sometimes hostile labour market.

Originality/value

This paper demonstrates that engaging in enterprise is motivated by an agent's reflexive evaluation of value(s) and how that enables them to navigate their structural condition(s); this contribution enhances theoretical approaches to enterprise and business creation by illuminating some of its diversity. This paper also contributes some much needed data about a group who are under-represented in the enterprise literature despite being over-represented in practice. There are implications and recommendations for policy and practice in the exposure and analysis of the issues emerging.

Details

International Journal of Entrepreneurial Behavior & Research, vol. 27 no. 8
Type: Research Article
ISSN: 1355-2554

Keywords

Open Access
Article
Publication date: 25 November 2021

André Luiz Tavares Damasceno, Cristiano Morini and Gean Lucas Pannellini

The purpose of this paper is to analyze the process of why a Brazilian digital startup company reached unicorn status the fastest.

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Abstract

Purpose

The purpose of this paper is to analyze the process of why a Brazilian digital startup company reached unicorn status the fastest.

Design/methodology/approach

After the literature review, the authors conducted the questionnaire containing 13 questions used in 18 in-depth interviews conducted in the case study. Saturation point combined with the independent and in-depth analysis of the researchers is used to achieve internal and external validity. The primary data collected underwent an analytical approach, followed by a resource-based view (RBV). RBV does not deal with time. There is a gap in the literature and an opportunity here: to analyze the fastest company to become a unicorn under the RBV lens.

Findings

The case reveals that value can be found in traditional sectors, as is the case of the real estate sector. This is a case of a company in the direct home-buying space.

Practical implications

The contribution of this paper is both practical, with the seven lessons, and theoretical. Resources allocated to a specific context in a specific geographic region shift the attention away from the absolute value of resources to the timing of aggregating them. Thus, the contribution accounting for time is new to the RBV.

Originality/value

The originality lies in the analysis of the dynamics of digital businesses with exponential growth.

Details

Innovation & Management Review, vol. 20 no. 3
Type: Research Article
ISSN: 2515-8961

Keywords

Open Access
Article
Publication date: 13 June 2019

Nipaporn Butsing, Mathuros Tipayamongkholgul and Disya Ratanakorn

The purpose of this paper is to estimate the mean life expectancy (LE) and the expected years of life lost (EYLL) for ischemic stroke and intracerebral hemorrhage.

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Abstract

Purpose

The purpose of this paper is to estimate the mean life expectancy (LE) and the expected years of life lost (EYLL) for ischemic stroke and intracerebral hemorrhage.

Design/methodology/approach

This retrospective cohort study included 5,210 patients with a diagnosis of first ischemic stroke or intracerebral hemorrhage between 2005 and 2013 from Ramathibodi Hospital, Bangkok, Thailand. The survival of each case was followed until December 31, 2016. A semiparametric extrapolation method was applied to estimate the lifetime survival function relative to an age and sex-matched reference population.

Findings

Of 5,210 patients, 74.2 percent experienced ischemic stroke. About 54.3 percent were men. Mean age at diagnosis was 64.3 years. The mean LE was 12.5 years for ischemic stroke and 12.0 years for intracerebral hemorrhage. The EYLL among patients with intracerebral hemorrhage was significantly higher than among those with ischemic stroke (10.1 vs 5.7). Women were expected to lose more LE than men for both types of stroke (p-value<0.05), while younger aged patients were expected to lose more years of life than older ones.

Originality/value

This study fulfilled an identified need to estimate LE and EYLL among patients with ischemic stroke and intracerebral hemorrhage.

Details

Journal of Health Research, vol. 33 no. 5
Type: Research Article
ISSN: 2586-940X

Keywords

Open Access
Article
Publication date: 31 December 2012

Sheng Teng Huang, Emrah Bulut, Okan Duru and Shigeru Yoshida

The national logistics policy report published by Ministry of Land, Infrastructure and Tourism in 2011 proposes to establish international logistics strategy teams in 10 different…

Abstract

The national logistics policy report published by Ministry of Land, Infrastructure and Tourism in 2011 proposes to establish international logistics strategy teams in 10 different regions around Japan to satisfy the increasing demand for advance transportation infrastructure and stay competitive in Asia Pacific. The globalization of world economies creates many opportunities as well as challenges for international logistics companies to gain more business chances in this changing environment. The purpose of this paper is to improve service quality of international logistics companies and explores the quality function deployment in terms of quality evaluation method. The logistics service is particularly characterized by offering a series of transport solution and including other logistics activities. The major customers of the logistics services are the industrial clients. The customer satisfaction is key managerial mission since the competitiveness is a growing issue in this industry. The quality function deployment is one of the unique procedures to expose the requirements of customer and transform them into managerial tasks by cross correlation analysis between requirements and technical measures. The empirical study is performed to investigate service quality of the logistics industry by focusing on a group of leading logistics companies.

Details

Journal of International Logistics and Trade, vol. 10 no. 3
Type: Research Article
ISSN: 1738-2122

Keywords

Content available
Article
Publication date: 28 March 2022

Subhasree Dutta, Somnath Bhattacharyya and Ioan Pop

The purpose of this study is to analyze the nonhomogeneous model on the mixed convection of Al2O3–Fe3O4 Bingham plastic hybrid nanofluid in a ventilated enclosure subject to an…

Abstract

Purpose

The purpose of this study is to analyze the nonhomogeneous model on the mixed convection of Al2O3–Fe3O4 Bingham plastic hybrid nanofluid in a ventilated enclosure subject to an externally imposed uniform magnetic field. Entropy generation and the pressure drop are determined to analyze the performance of the heat transfer. The significance of Joule heating arising due to the applied magnetic field on the heat transfer of the yield stress fluid is described.

Design/methodology/approach

The ventilation in the enclosure of heated walls is created by an opening on one vertical wall through which cold fluid is injected and another opening on the opposite vertical wall through which fluid can flow out.

Findings

This study finds that the inclusion of Fe3O4 nanoparticles with the Al2O3-viscoplastic nanofluid augments the heat transfer. This rate of enhancement in heat transfer is higher than the rate by which the entropy generation is increased as well as the enhancement in the pressure drop. The yield stress has an adverse effect on the heat transfer; however, it favors thermal mixing. The magnetic field, which is acting opposite to the direction of the inlet jet, manifests heat transfer of the viscoplastic hybrid nanofluid. The horizontal jet of cold fluid produces the optimal heat transfer.

Originality/value

The objective of this study is to analyze the impact of the inclined cold jet of viscoplastic electrically conducting hybrid nanofluid on heat transfer from the enclosure in the presence of a uniform magnetic field. The combined effect of hybrid nanoparticles and a magnetic field to enhance heat transfer of a viscoplastic fluid in a ventilated enclosure has not been addressed before.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 32 no. 9
Type: Research Article
ISSN: 0961-5539

Keywords

Content available
Book part
Publication date: 30 June 2000

Abstract

Details

The Theory of Monetary Aggregation
Type: Book
ISBN: 978-0-44450-119-6

Open Access
Article
Publication date: 12 March 2024

Edicleia Oliveira, Serge Basini and Thomas M. Cooney

This article aims to explore the potential of feminist phenomenology as a conceptual framework for advancing women’s entrepreneurship research and the suitability of…

Abstract

Purpose

This article aims to explore the potential of feminist phenomenology as a conceptual framework for advancing women’s entrepreneurship research and the suitability of interpretative phenomenological analysis (IPA) to the proposed framework.

Design/methodology/approach

The article critically examines the current state of women’s entrepreneurship research regarding the institutional context and highlights the benefits of a shift towards feminist phenomenology.

Findings

The prevailing disembodied and gender-neutral portrayal of entrepreneurship has resulted in an equivocal understanding of women’s entrepreneurship and perpetuated a male-biased discourse within research and practice. By adopting a feminist phenomenological approach, this article argues for the importance of considering the ontological dimensions of lived experiences of situatedness, intersubjectivity, intentionality and temporality in analysing women entrepreneurs’ agency within gendered institutional contexts. It also demonstrates that feminist phenomenology could broaden the current scope of IPA regarding the embodied dimension of language.

Research limitations/implications

The adoption of feminist phenomenology and IPA presents new avenues for research that go beyond the traditional cognitive approach in entrepreneurship, contributing to theory and practice. The proposed conceptual framework also has some limitations that provide opportunities for future research, such as a phenomenological intersectional approach and arts-based methods.

Originality/value

The article contributes to a new research agenda in women’s entrepreneurship research by offering a feminist phenomenological framework that focuses on the embodied dimension of entrepreneurship through the integration of IPA and conceptual metaphor theory (CMT).

Details

International Journal of Entrepreneurial Behavior & Research, vol. 30 no. 11
Type: Research Article
ISSN: 1355-2554

Keywords

Open Access
Article
Publication date: 22 September 2020

Hung T. Nguyen

While there exist many surveys on the use stochastic frontier analysis (SFA), many important issues and techniques in SFA were not well elaborated in the previous surveys, namely…

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Abstract

Purpose

While there exist many surveys on the use stochastic frontier analysis (SFA), many important issues and techniques in SFA were not well elaborated in the previous surveys, namely, regular models, copula modeling, nonparametric estimation by Grenander’s method of sieves, empirical likelihood and causality issues in SFA using regression discontinuity design (RDD) (sharp and fuzzy RDD). The purpose of this paper is to encourage more research in these directions.

Design/methodology/approach

A literature survey.

Findings

While there are many useful applications of SFA to econometrics, there are also many important open problems.

Originality/value

This is the first survey of SFA in econometrics that emphasizes important issues and techniques such as copulas.

Details

Asian Journal of Economics and Banking, vol. 4 no. 3
Type: Research Article
ISSN: 2615-9821

Keywords

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