نتایج جستجو برای: npv

تعداد نتایج: 4524  

Journal: :AJNR. American journal of neuroradiology 2008
E S Bartlett T D Walters S P Symons R I Aviv A J Fox

BACKGROUND AND PURPOSE Previous studies quantifying moderate and severe carotid stenosis by direct millimeter measures on CT angiography (CTA) did not consider how prevalence and gender may influence classification cutoff values. MATERIALS AND METHODS Three hundred nineteen carotid arteries were evaluated in consecutive patients with known or suspected carotid artery disease. Millimeter measu...

2012
Erica R. Heitmann Kamani M. Lankachandra Jeff Wall George D. Harris Hollie J. McKinney G. Reza Jalali Yogita Verma Eric Kershnar Michael W. Kilpatrick Petros Tsipouras Diane M. Harper

BACKGROUND Women with low grade squamous intraepithelial lesions (LSIL) at cervical cancer screening are currently referred for further diagnostic work up despite 80% having no precancerous lesion. The primary purpose of this study is to measure the test characteristics of 3q26 chromosome gain (3q26 gain) as a host marker of carcinogenesis in women with LSIL. A negative triage test may allow th...

2014
Yanni Jiang Jianjuan Lou Siqi Wang Yi Zhao Cong Wang Dehang Wang

OBJECTIVE The purpose of study was to prospectively evaluate the diagnostic performance of dynamic contrast-enhanced MR imaging in the differentiation of malignant lesions from benign ones in patients with BI-RADS 3-4 microcalcifications detected by mammography. MATERIALS AND METHODS 93 women with 100 microcalcifications had undergone breast MRI from June 2010 to July 2013. Subsequently, 91 r...

Journal: :The Journal of thoracic and cardiovascular surgery 1996
M T Camacho M Edelman A Rozenblit J C McKitrick K Pinsker S C Fell

spontaneous breathing as soon as possible 2 and lowpressure suction of the chest tubes after operation are critical.2, 3 Some ventilatory support is necessary, however, when a patient continues to have hypoventilation after operation. Pressure-controlled ventilation rather than volume-controlled ventilation has been recommended for such patients because it can deliver high inspired gas flows in...

Journal: :Surgery 2011
Fabio Pomerri Salvatore Pucciarelli Isacco Maretto Michela Zandonà Paola Del Bianco Luca Amadio Massimo Rugge Donato Nitti Pier C Muzzio

BACKGROUND The aim of the study was to assess the accuracy of imaging techniques in predicting pathologic tumor (ypT), node (ypN) stages and the circumferential resection margin (ypCRM) status of rectal cancers after preoperative chemoradiotherapy (CRT). METHODS Using pelvic computed tomography (CT), magnetic resonance imaging (MRI), and endorectal ultrasound (ERUS), 90 consecutive patients w...

پایان نامه :0 1378

جهت تشخیص توجیه مالی اقتصادی طرح های عظیم سرمایه ای، از برآوردهای مبتنی بر روش های سنتی بودجه بندی سرمایه ای استفاده می شود که پیش بینی های حاصله با نتایج واقعی حاصل از اجزا تفاوت زیادی دارد. هدف از این تحقیق، معرفی شیوه های جدید جهت داشتن برآوردی نزدیکتر به نتایج واقعی طرح های سرمایه ای است . هدف از بودجه بندی سرمایه ای، شناسائی و گزینش آن دسته از طرح های سرمایه ای است که انتظار می رود با اجرا...

Journal: :Investigative ophthalmology & visual science 2006
John Chopin Hwang Jackie W K Chan Stanley Chang R Theodore Smith

PURPOSE It has been suggested that lipofuscin accumulation, as measured by increased fundus autofluorescence (FAF), precedes progression or development of junctional zone geographic atrophy (GA) in age-related macular degeneration (AMD). The tools of biomedical image analysis were used to measure the probabilistic relationship of GA progression to increased FAF. METHODS Serial AF images of ei...

2005
Carlo Alberto Magni

For one–period projects under certainty, the notion of Net Present Value (NPV) formally translates the notion of economic profit, where the discount rate is the cost of capital. Under uncertainty, the cost of capital is the expected rate of return of an equivalent-risk alternative that the investor might undertake and is often found by making recourse to the Capital Asset Pricing Model. This pa...

2000
Elisa Luciano Lorenzo Peccati

The paper discusses the use of a generalized version of the equivalent annuity principle, which takes into account interest rate #uctuations over time. When dealing with applications over a sequence of cycles, e.g. plant replacement ones, the equivalent annuity is usually de"ned with reference to each single cycle or to the whole sequence. First, we study the correspondence between net present ...

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