نتایج جستجو برای: initial reserve

تعداد نتایج: 399147  

Journal: :J. Economic Theory 2002
Michele Boldrin David K. Levine

We study a simple model of factor saving technological innovation in a concave framework. Capital can be used either to reproduce itself or, at additional cost, to produce a higher quality of capital that requires less labor input. If higher quality capital can be produced quickly, we get a model of exogenous balanced growth as a special case. If, however, higher quality capital can be produced...

2004

Description The IMO may use ‘out-of-market’ sources of reserve in response to an operating reserve shortfall in the real-time constrained sequence.1 Operating reserve shortfalls occur when either the total amount of available MW offered in the market for a class of operating reserve is less than the IMO’s requirement for that class of reserve, or when the total amount of available MW offered fo...

2017
Nan Li Nikita Singhal Kory Hedman

Security-constrained unit commitment (SCUC) is a classical problem used for day-ahead commitment, dispatch, and reserve scheduling. Even though SCUC models acquire reserves, N-1 reliability is not guaranteed. This paper presents an enhanced securityconstrained unit commitment formulation that facilitates the integration of stochastic resources and accounts for reserve deliverability issues. In ...

2017
Maciej H. Kotowski John F. Kennedy

We investigate equilibrium bidding in first-price auctions with asymmetric reserve prices. For example, the auctioneer may set a low reserve price for one subset of bidders and a high reserve price for others. When used to pursue a distributional objective, lowering the reserve price for some bidders channels benefits toward marginal agents in the favored group and does not adversely impact non...

Journal: :acta medica iranica 0
mohammad hasan namazi department of cardiology, cardiovascular research center, shahid beheshti univercity of medical sciences, tehran, iran. morteza safi department of cardiology, cardiovascular research center, shahid beheshti univercity of medical sciences, tehran, iran. hosein vakili department of cardiology, cardiovascular research center, shahid beheshti univercity of medical sciences, tehran, iran habibollah saadat department of cardiology, cardiovascular research center, shahid beheshti univercity of medical sciences, tehran, iran. saeed alipour department of cardiology, cardiovascular research center, shahid beheshti univercity of medical sciences, tehran, iran. abdulkarim alhuthaifi department of cardiology, school of medicine, shahid beheshti university of medical sciences, tehran, iran.

myocardial fractional flow reserve (ffr) is a new index of the functional significance of intermediate coronary stenoses that is calculated from pressure measurements made during coronary arteriography. the aim of this study was to evaluate the correlation between non-hyperemic coronary pressure dicrotic notch and fractional flow reserve (ffr). a consecutive of 114 patients (73 men and 41 women...

Journal: :Neurobiology of aging 2011
Adam M Brickman Karen L Siedlecki Jordan Muraskin Jennifer J Manly José A Luchsinger Lok-Kin Yeung Truman R Brown Charles DeCarli Yaakov Stern

OBJECTIVE White matter hyperintensities (WMH), visualized on T2-weighted MRI, are thought to reflect small-vessel vascular disease. Much like other markers of brain disease, the association between WMH and cognition is imperfect. The concept of reserve may account for this imperfect relationship. The purpose of this study was to test the reserve hypothesis in the association between WMH severit...

Journal: :Circulation 2002
Jeroen J Bax Don Poldermans Arend F L Schinkel Eric Boersma Abdou Elhendy Alexander Maat Roelf Valkema Eric P Krenning Jos R T C Roelandt

BACKGROUND Chronic dysfunctional but viable myocardium may exhibit contractile reserve and/or intact perfusion. Segments with intact perfusion without contractile reserve are frequently observed inpatients with ischemic cardiomyopathy. The clinical relevance of this observation is unclear; in particular, the functional outcome after revascularization is unknown. Thus, contractile reserve (using...

F. Aminifar, M. Fotuhi-Firuzabad,

From the optimization point of view, an optimum solution of the unit commitment problem with reliability constraints can be achieved when all constraints are simultaneously satisfied rather than sequentially or separately satisfying them. Therefore, the reliability constraints need to be appropriately formulated in terms of the conventional unit commitment variables. In this paper, the reli...

2015
Ludmila Barbakadze Jenara Kristesashvili Natalia Khonelidze Gia Tsagareishvili

BACKGROUND The objective of our study was to identify the correlations between the tests currently used in ovarian reserve assessment: anti-Mullerian hormone (AMH), follicle stimulating hormone (FSH) and antral follicle count (AFC) and to distinguish the most reliable markers for ovarian reserve in order to select an adequate strategy for the initial stages of infertility treatment. MATERIALS...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2004
Etienne Croteau François Bénard M'hamed Bentourkia Jacques Rousseau Michel Paquette Roger Lecomte

UNLABELLED The purpose of this study was to evaluate the effects of 2 anesthetic agents on myocardial perfusion and coronary reserve in rats under resting and stress conditions with small animal PET. METHODS Twenty-four rest/stress studies were performed in 6 rats. Each animal received all 4 possible combinations of anesthetic agents (propofol, isoflurane) and pharmacologic stress agents (dob...

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