18 Result(s)
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Hung Jen Wang
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Introduction
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A hierarchical panel data stochastic frontier model for the estimation of stochastic metafrontiers
This paper proposes a stochastic frontier model with three composed errors, and therefore six error components. As in the metafrontier literature, firms belong to groups with a group-specific frontier. A firm ...
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Gender effect on the oncologic outcomes of upper urinary tract urothelial carcinoma in Taiwan
Upper urinary tract urothelial carcinoma (UTUC) is a relatively uncommon malignancy in Western countries, affecting more men than women. By contrast, UTUC is relatively common in Taiwan and diagnosed more ofte...
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The role of intravesical prostatic protrusion in the evaluation of overactive bladder in male patients with LUTS
To evaluate the association of intravesical prostatic protrusion (IPP) and overactive bladder (OAB) in male patients with lower urinary tract symptoms (LUTS). IPP has been suggested to correlate with storage s...
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Long-term functional change of cryoinjury-induced detrusor underactivity and effects of extracorporeal shock wave therapy in a rat model
To investigate the long-term functional change of cryoinjury-induced detrusor underactivity (DU) and the therapeutic potential of repeated low-energy shock wave therapy (LESW).
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Efficacy and persistence of low-dose mirabegron (25 mg) in patients with overactive bladder: analysis in a real-world urological practice
Mirabegron is a relatively new drug to treat overactive bladder (OAB). The therapeutic doses are between 25 and 100 mg in clinical trials. We aimed to evaluate the efficacy and persistence of low-dose mirabegr...
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Nonparametric estimation of the determinants of inefficiency
We consider the benchmark stochastic frontier model where inefficiency is directly influenced by observable determinants. In this setting, we estimate the stochastic frontier and the conditional mean of ineffi...
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Nocturia indicates a poor health status and increases mortality in male patients with type 2 diabetes mellitus
To investigate the association between nocturia and erectile dysfunction, androgen deficiency, overactive bladder and systemic diseases in men with type 2 diabetic mellitus.
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Evaluation of immunomagnetic separation for the improvement of Salmonella detection in aquatic environment
This study compares various immunomagnetic separation (IMS) protocols. The average recovery efficiency of IMS for different Salmonella concentrations (between 102 and 105 CFU/ml) was 53.5 ± 12.9 % (n = 24). When ...
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Semantic real-world image classification for image retrieval with fuzzy-ART neural network
Image retrieval based on semantic learning has attracted considerable attention in recent years. Analyzing the contents of an image and retrieving corresponding semantics are important in semantic-based image ...
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A Bayesian estimator for stochastic frontier models with errors in variables
A Bayesian estimator is proposed for a stochastic frontier model with errors in variables. The model assumes a truncated-normal distribution for the inefficiency and accommodates exogenous determinants of inef...
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Development of cellular therapy for the treatment of stress urinary incontinence
Stress urinary incontinence (SUI) is highly prevalent and associated with a reduced quality of life. An intact rhabdosphincter at the mid-urethra is mandatory to maintain urinary continence. Adult stem cell in...
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Neurotoxin Use for Voiding Dysfunction
Botulinum neurotoxin injection into the urethral sphincter has been shown to be effective in the treatment of neurogenic and non-neurogenic detrusor-sphincter dyssynergia. In this article, we review the ration...
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Study of Spectroscopy and Microstructure in Nanocrystalline Cr-Doped Fibers Grown by the Drawing-Tower Technique
The spectroscopy and microstructure of Cr-doped fibers (CDFs) fabricated by the drawing-tower technique are investigated. The spontaneous emission spectrum exhibited broadband emission of 1.2 μm to 1.55 μm. High-...
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Heteroscedasticity and Non-Monotonic Efficiency Effects of a Stochastic Frontier Model
We consider a model that provides flexible parameterizations of the exogenous influences on inefficiency. In particular, we demonstrate the model's unique property of accommodating non-monotonic efficiency eff...
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One-Step and Two-Step Estimation of the Effects of Exogenous Variables on Technical Efficiency Levels
Consider a stochastic frontier model with one-sided inefficiency u, and suppose that the scale of u depends on some variables (firm characteristics) z. A “one-step” model specifies both the stochastic frontier an...
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Novel Synthesis, Characterization, and Physical Properties of Self-Doped Sulfonated Polyaniline by Copolymerization between p-Aminodiphenylamine and o-Aminobenzenesulfonic Acid
Sulfonated polyaniline has been synthesized by a novel method, in which p-aminodiphenylamine (p-APA) and o-aminobenzenesulfonic acid (o-ABS) are copolymerized. The copolymers produced have the same composition ev...
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Large Deviations for Large Capacity Loss Networks with Fixed Routing and Polyhedral Admission Sets
In this paper, we study large deviations of large capacity loss networks with fixed routing. We use two-level modelling for the loss networks: the call level and the cell level. At the call level, a call reque...
