Young-Hoon Park

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There is an immediate need for a high-density genetic map of cotton anchored with fiber genes to facilitate marker-assisted selection (MAS) for improved fiber traits. With this goal in mind, genetic mapping with a new set of microsatellite markers [comprising both simple (SSR) and complex (CSR) sequence repeat markers] was performed on 183 recombinant(More)
In a medium containing 40 g ethanol l−1, laccase production by Trametes versicolor was 2.6 unit per ml of the supernatant, which was over 20 times higher than that without ethanol. Laccase activity with ethanol was quite comparable to that with the well-known inducers such as veratryl alcohol, xylidine and guaiacol. With other white-rot fungi, Coriolus(More)
We develop a model of consumer learning and choice behavior in response to uncertain service at the marketplace. Learning could be asymmetric, i.e., consumers may associate different weights with positive and negative experiences. Under this consumer model, we characterize the steady-state distribution of demand for retailers given that each retailer holds(More)
The motivation for this research is derived from a currently active research topic in both marketing and economics, Internet auctions. A sequence of bids in this market mechanism can be viewed as record breaking events with participants (bidders) having dynamically changing valuations for the auctioned item, but the latent number of bidders “competing” in(More)
We extend Schmittlein et al.’s model (1987) of customer lifetime value to include satisfaction. Customer purchases are modeled as Poisson events and their rates of occurrence depend on the satisfaction of the most recent purchase encounter. Customers purchase at a higher rate when they are satisfied than when they are dissatisfied. A closed-form formula is(More)
We model how to measure consumer willingness to pay (WTP) from an English or ascending first-price auction based on two general bidding premises: no bidder bids more than her WTP, and no bidder allows a rival bidder to win at a price that she is willing to beat. In other words, we propose a " no regret " rule in bidding. Other than that, we do not impose(More)
Neglected ruptures of the Achilles tendon (AT) are not common and have a greater tendency to cause complications and to produce poorer functional results than fresh ruptures. Numerous surgical procedures have been described for the reconstruction of neglected AT ruptures. However, no report has been issued about an AT rupture neglected for more than 2(More)
Beauveria bassiana (Balsamo) isolates from Lygus hesperus (Knight) and Lygus lineolaris (Palisot de Beauvois) are being evaluated as potential microbial control candidates for both Lygus species. Based on previous work with a large collection of isolates from both Lygus species, eight isolates were evaluated for characteristics relevant to mycoinsecticide(More)
PURPOSE To evaluate the incidence, causative organism, clinical features, and visual outcome of acute endophthalmitis following intravitreal injection and to report the clinical outcome of patients receiving preinjection antibiotics for the prevention of endophthalmitis. METHODS For all intravitreal triamcinolone acetonide, bevacizumab, ranibizumab, and(More)
W study the bidding strategies of vertically differentiated firms that bid for sponsored search advertisement positions for a keyword at a search engine. We explicitly model how consumers navigate and click on sponsored links based on their knowledge and beliefs about firm qualities. Our model yields several interesting insights; a main counterintuitive(More)