منابع مشابه
Combined Sales Effort and Inventory Control under Demand Uncertainty
We study the joint inventory and sales effort management problems of a retailer in a broad context and investigate the optimal policies for a single item, periodic-review system. In each period, the demand is uncertain depending on the sales effort level exerted by the retailer, which incurs an associated cost. The retailer’s objective is to find a joint optimal inventory replenishment and sale...
متن کاملComparison of cardiovascular response to combined static-dynamic effort, postprandial dynamic effort and dynamic effort alone in patients with chronic ischemic heart disease.
The cardiovascular responses to combined static-dynamic effort, postprandial dynamic effort and dynamic effort alone were evaluated by upright bicycle ergometry during equilibrium-gated blood pool scintigraphy in 24 men, mean age 59 +/- 8 years, with chronic ischemic heart disease. Combined static-dynamic effort and the postprandial state elicited a peak cardiovascular response similar to that ...
متن کاملA Study on Combined Effects of Reverberation and Increased Vocal Effort on ASR
This study analyzes the individual and combined effect of room reverberation and increased vocal effort on automatic speech recognition. Robustness of several state-of-the-art front-end feature extraction strategies and normalizations to these sources of speech signal variability is evaluated in the context of large and small vocabulary recognition tasks on American English and Czech speech cor...
متن کاملAdmission Control for Combined Guaranteed Performance and Best Effort Communications Systems under Heavy Traffic
Communications systems often have many types of users. Since the users share the same resource, there is a conflict in their needs. This conflict leads to the imposition of controls on admission or elsewhere. In this paper, there are two types of customers, GP (Guaranteed Performance) and BE (Best Effort). We consider an admission control of GP customer which has two roles. First, to guarantee ...
متن کاملDeterminants of Effort Intolerance in Patients With Heart Failure: Combined Echocardiography and Cardiopulmonary Stress Protocol.
OBJECTIVES The purpose of this study was to assess individual mechanisms of effort intolerance in patients with heart failure with preserved ejection fraction (HFpEF), heart failure with reduced ejection fraction (HFrEF), or normal cardiac function using combined echocardiography and cardiopulmonary stress testing. BACKGROUND Combined stress echocardiography and cardiopulmonary tests visualiz...
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ژورنال
عنوان ژورنال: Nature Reviews Cancer
سال: 2008
ISSN: 1474-175X,1474-1768
DOI: 10.1038/nrc2426