BACKGROUND/AIMS It is difficult to precisely detect the lateral margin during endoscopic submucosal dissection (ESD) for signet ring cell carcinoma (SRC) because SRC often expands to lateral direction through the lamina propria. Thus, the aim of this study was to classify the intramucosal spreading patterns of SRC and to analyze the patients' clinicopathological findings according to the spread...

Although the Dixit-Stiglitz aggregator is the workhorse specification of monopolistic competition, this framework and related variants are fundamentally inconsistent with a key stylized fact from empirical studies of consumer behavior and product marketing, namely, that the price elasticity of demand for a given brand is primarily determined by the extensive margin (i.e., changes in the number ...

PURPOSE To compare the perioperative outcomes in 2 initial series of open radical prostatectomy (ORP) and laparoscopic radical prostatectomy (LRP) in Asian men with prostate cancer. MATERIALS AND METHODS From March 1999 to February 2007, the first 100 consecutive patients who underwent ORP and the first 100 consecutive patients who underwent LRP by the same surgeon (SL) were assessed. Mean ag...

Liu, Yuhang MS, Purdue University, December 2016. Measuring the Effect of Cold Storage, Captive Supply, and Concentration on the Marketing Margin in the U.S. Pork Industry. Major Professor: Kenneth A. Foster. This study investigates the implication of key decision variables at the control of processing firms in a concentrated industry. Succinctly, the decisions examined affect the firm’s abilit...

Search engine marketing is currently the most popular form of online advertising. Many advertising agencies and bloggers claim that the success of search engine marketing is driven by the ‘‘long tail”, defined in this research as the many less popular keywords employed by users to search the Internet, and suggest that search engine marketing campaigns need to have hundreds or thousands of keywo...

Since 2006, many U.S. food and beverage companies have pledged to market healthier foods to children to help combat the childhood obesity epidemic. Despite this, companies' expenditures on online advertising have increased of late. To explore this seemingly contradictory situation, the authors conducted a content analysis of approximately 100 food and beverage brand websites, examining a multit...

OBJECTIVE We assess exposure to direct-to-consumer tobacco marketing and its association with ever having tried smoking, smoking within past 30 days (current), and smoking ≥100 cigarettes in lifetime (established) among adolescents and young adults. METHODS We surveyed a U.S. telephone sample of 3,342 15- to 23-year-olds and 2,541 respondents subsequently completed a web-based survey. Among r...

It is of crucial importance to evaluate the safety profile of the ingredients used in dermatological emulsions. A suitable equilibrium between safety and efficacy is a pivotal concern before the marketing of a dermatological product. The aim was to assess the safety and biological effects of a new cold processed silicone-based emulsion (SilEmulsion). The hazard, exposure, and dose-response asse...

BACKGROUND O-(2-18 F-fluoroethyl)-L-tyrosine-(FET)-PET may be helpful to improve the definition of radiation target volumes in glioblastomas compared with MRI. We analyzed the relapse patterns in FET-PET after a FET- and MRI-based integrated-boost intensity-modulated radiotherapy (IMRT) of glioblastomas to perform an optimized target volume definition. METHODS A relapse pattern analysis was p...

This paper presents an empirical examination of the relationship between brand equity and customer acquisition, retention, and profit margin, the key components of customer lifetime value (CLV), as well as the role of marketing in this relationship. We examine a unique database from the U.S. automobile market, comprised of 10 years of survey-based brand equity measures as well as acquisition ra...