In this article we show how to implement merger simulation in Stata after estimating an aggregate nested logit demand system with a linear regression model. We also show how to implement merger simulation when the demand parameters are not estimated, but instead calibrated to be consistent with outside information on average price elasticities and pro…t margins.

We chart the ways in which closure properties of consequence relations for uncertain inference take on different forms according to whether the relations are generated in a quantitative or a qualitative manner. Among the main themes are: the identification of watershed conditions between probabilistically and qualitatively sound rules; failsafe and classicality transforms of qualitatively sound...

We study the task of recognizing human actions in video whilst paying attention to the shot and thread editing structure. Most existing action recognition algorithms ignore this structure, but it is generally present in edited TV and film material. To this end, we make the following contributions: first, we introduce a new dataset of human actions to study the occurrence/reoccurrence of pattern...

Predictive models for the exponential growth rate (EGR) and germination, outgrowth, and lag times (GOL) of Bacillus stearothermophilus previously developed in our laboratory were expanded to include higher salt (1.5%) formulations. The expanded models were validated in 7 military meals-ready-to-eat incubated at temperatures from 45 °C to 60 °C, and tryptic soy broth incubated from 37.5 °C to 70...

Real world protocols often involve human choices that depend on incentives, including when they fail and require fail-safe or fail-deadly mechanisms. We look at three example systems (the EMV protocol, consensus in cryptocurrencies, and Tor) in this context, paying particular attention to the role that incentives play in fail-safe and faildeadly situations. We argue that incentives should expli...

In the last few lectures we have seen how to obtain high confidence bounds on the generalization error of functions learned from function classes of limited capacity, measured in terms of the growth function and VC-dimension for binary-valued function classes in the case of binary classification, and in terms of the covering numbers, pseudo-dimension, and fat-shattering dimension for real-value...

OBJECTIVE Laparoscopic resection of large gastric gastrointestinal stromal tumors (GIST) has been controversial. This generally has been limited to small lesions. We hypothesize that laparoscopic mobilization and resection using, in some cases, extracorporeal anastomosis of the gastrointestinal (GI) tract is an oncologically safe alternative to open surgery even when tumors are large. METHODS...

OBJECTIVES This study sought to assess cocaine's effects on Taser-induced ventricular fibrillation (VF) threshold in a pig model. BACKGROUND Stun guns are increasingly used by law enforcement officials to restrain violent subjects, who are frequently intoxicated with cocaine and other drugs of abuse. The interaction of cocaine and the stun gun on VF induction is unknown. METHODS We tested f...

PURPOSE More than 50,000 patients in the United States will present each year with liver metastases from colorectal cancers. The current study was performed to determine if liver resection for colorectal metastases is safe and effective and to evaluate predictors of outcome. MATERIALS AND METHODS Data for 456 consecutive resections performed between July 1985 and December 1991 in a tertiary r...

the study examines production efficiency of farmers under national fadama-ii project in oyo state nigeria. primary data were collected from two hundred and sixty-four farmers using multistage sampling technique. the analytical framework used for the study include: descriptive, infrastructure index, gross margin and stochastic frontier production function. average infrastructural index in the ar...