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- 저자 : Taegyu Hur (검색결과 5 건)
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Perceived Marginal Cost in Demand
Taegyu Hur,Jaehwan Kim,Greg M. Allenby 한국마케팅관리학회 2023 한국마케팅관리학회 학술대회 Vol.2023 No.04
Consumers often face monetary and non-monetary costs when purchasing goods. Experience goods, for example, require consumers to invest time and money to acquire and use a product, and time requirements may not be fully known proir to making a purchase. Unlike monetary costs, non-monetary costs are often not explictily stated and are therefore subjectively evaluated by consumers, suggesting that consumers’ perceived costs and the costs assumed by researchers may not coincide. We propose a model that allows for consumer’s subjective evaluation of marginal time costs through perception parameters and provide solutions to estimate the model. We apply the proposed model to three online course datasets o f volumetric demand and floor cleaning service data of discrete choice. The proposed model fits the data better, improves predictions, and leads to different managerial implications. Implication for Product line design.
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Secondary paroxysmal dyskinesia associated with 2009 H1N1 infection
Hur, Yun Jung,Hwang, Taegyu The Korean Pediatric Society 2013 Clinical and Experimental Pediatrics (CEP) Vol.56 No.1
Neurological complications associated with 2009 H1N1 infection in children have been reported and recognized worldwide. The most commonly reported neurological complications are seizures and encephalopathy. Secondary movement disorders are also associated with the infection, but such cases are rarely reported. Here, we describe the case of a 14-year-old boy with paroxysmal kinesigenic dyskinesia secondary to 2009 H1N1 infection, who presented with dystonia and choreic movement triggered by sudden voluntary movement.
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Hur, Yun Jung,Lee, Joon Soo,Kim, Dong Seok,Hwang, Taegyu,Kim, Heung Dong S. Karger AG 2010 Pediatric neurosurgery Vol.46 No.3
<P><I>Objective:</I> To evaluate the surgical outcome for intractable, MRI-negative infantile spasms (IS), and to identify diagnostic targets in the focal epileptogenic area by methods other than MRI. <I>Methods:</I> We retrospectively studied 9 patients who had had surgery for intractable IS, and whose lesions did not appear on MRI. We analyzed video/electroencephalography (EEG), single photon emission computed tomography (SPECT) and positron emission tomography (PET) findings and their surgical outcomes. In 7 patients who were seizure free after surgery, we analyzed the EEG parameters for characteristics expected in the primary epileptogenic region. <I>Results:</I> All patients underwent resective surgery including frontal lobectomy and multilobar resection. Seven patients showed an Engel class I outcome, and 2 patients showed a class III outcome. Interictal SPECT results showed 66.7% concordance for the hemisphere affected (lateralization), and 55.6% for lesion location (localization). Ictal SPECT showed 71.4% concordance for lateralization and localization. PET showed 66.7% concordance for lateralization, and 55.6% for localization. EEG parameters, including localized paroxysmal fast activities, spindle-shaped fast activities, repetitive or rhythmic sharp/spike wave discharges, and subclinical seizures showed highly localized specificity, and may serve to identify the epileptogenic lesion. <I>Conclusion:</I> Surgical treatment of MRI-negative IS should be justified using a combination of diagnostic methods.</P><P>Copyright © 2010 S. Karger AG, Basel</P>
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Complete trisomy 14 mosaicism: first live-born case in Korea
Hur, Yun Jung,Hwang, Taegyu The Korean Pediatric Society 2012 Clinical and Experimental Pediatrics (CEP) Vol.55 No.10
Trisomy 14 mosaicism is a rare chromosome disorder characterized by delayed development, failure to thrive, and facial dysmorphism. Only approximately 30 trisomy 14 mosaicism cases have been reported in the literature because trisomy 14 is associated with early spontaneous abortion. We report a case of a 17-month-old girl with abnormal skin pigmentation, delayed development, facial dysmorphism, and failure to thrive with the 47,XX,+14/46,XX chromosome complement.
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LOCALLY-RATIONAL DEMAND MODELS
Sanghak Lee,Taegyu Hur,Greg M. Allenby 글로벌지식마케팅경영학회 2023 Global Marketing Conference Vol.2023 No.07
The assumption that more-is-better doesn’t hold when consumers want to limit the amount they consume. High calorie meals frustrate dieting plans, food with high salt content may lead to bad health outcomes and large quantity purchases may not fit within available storage spaces. The assumption in economics that marginal utility is always positive may not apply in situations when purchase quantities take on a wide range and when consumers have ideal points and unobserved constraints on their choices. In this paper we develop a model and estimator for locally-rational demand that identifies un- observed constraints on choice by allowing marginal utility to be negative. The model is applied to conjoint data of buy-one-get-one (BOGO) promotions and a scanner panel dataset of milk purchases where the e?ect of locally-rational demand is prevalent.
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