نتایج جستجو برای: yield risk

تعداد نتایج: 1129893  

Journal: :Phytopathology 2018
James A Elderfield Fran Lopez Ruiz Frank van den Bosch Nik J Cunniffe

Whether fungicide resistance management is optimised by spraying chemicals with different modes of action as a mixture (i.e. simultaneously) or in alternation (i.e. sequentially) has been studied by experimenters and modellers for decades. However results have been inconclusive. We use previously-parameterised and validated mathematical models of wheat septoria leaf blotch and grapevine powdery...

2005
E. BUSKENS P. A. STEWART J. HESS D. E. GROBBEE J. W. WLADIMIROFF

Objective: To determine the efficacy and yield of tertiary center fetal echocardiography for different high-risk groups. Methods: Between January 1, 1982, and January 1, 1994, scans for anomalies were performed on 3246 women at increased risk for congenital heart disease in their offspring. Gestational age was 16-25 weeks in 83%. Maternal and gestational age as wel l as prenatal and postnatal d...

2006
Tim vor der Brück Stephan Busemann

Tree mapping grammars are used in natural language generation (NLG) to map non-linguistic input onto a derivation tree from which the target text can be trivially read off as the terminal yield. Such grammars may consist of a large number of rules. Finding errors is quite tedious and sometimes very time-consuming. Often the generation fails because the relevant input subtree is not specified co...

2010

Neutralization of Acidic Sulfur Species by Calcite in Mineral Aerosols Collected in China and Japan Studied by Ca K-Edge X-Ray Absorption Near-Edge Structure Spectroscopy X-ray absorption near-edge structure studies at the calcium K-edge have been used to show that acidic sulfur species in the atmosphere (e.g., H2SO4), mainly released by human activities, can be neutralized by the calcite prese...

2006
Fousseni Chabi-Yo Jun Yang

We study the joint dynamics of bond yields and macroeconomic variables in a New-Keynesian small open economy model complemented with a no-arbitrage term structure model. With Canadian data, we are able to study the impact of domestic and foreign (US) shocks on the yield curve. The unconditional variance decomposition of the yield level show that the movement of expected short rates is mainly dr...

Journal: :Tobacco control 2001
M J Thun D M Burns

Cigarettes with lower machine measured "tar" and nicotine yields have been marketed as "safer" than high tar products over the last four decades, but there is conflicting evidence about the impact of these products on the disease burden caused by smoking. This paper critically examines the epidemiological evidence relevant to the health consequences of "reduced yield" cigarettes. Some epidemiol...

2016
Viral Acharya Hassan Naqvi

We develop a model of financial intermediation characterized by an inside agency problem such that asset managers, when they have access to high enough liquidity, “reach for yield” by overinvesting in risky assets and concurrently underinvesting in safer or medium-risk assets. The managers follow a pecking order whereby their first preference is to invest in risky assets; their second preferenc...

2015
Dongheon Shin Baeho Kim

Article history: Received 8 July 2014 Accepted 12 March 2015 Available online 21 March 2015 We study the impact of the recent global financial crisis on the determinants of corporate bond spreads, in particular, focusing on the impact of liquidity and credit risk on yield spreads using data regarding financial and non-financial bond issuers listed on the Korea Exchange (KRX). Our main findings ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

abstract: country’s fiber optic network, as one of the most important communication infrastructures, is of high importance; therefore, ensuring security of the network and its data is essential. no remarkable research has been done on assessing security of the country’s fiber optic network. besides, according to an official statistics released by ertebatat zirsakht company, unwanted disconnec...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پزشکی 1392

چکیده: سرطان مجاری ادراری-تناسلی یکی از مهمترین علل مرگ و میر در میان زنان سراسر دنیا می باشد. متیلاسیون در موقعیت کربن شماره 5 باز سیتوزین یکی از مهمترین انواع تنظیمات اپی ژنتیکی بوده که روی مولکول دو رشته ای dna اتفاق می افتد. متیلاسیون باز سیتوزین ارتباط تنگاتنگ با تنظیم بیان ژن دارد. وضعیت متیلاسیون dna را با تکنیک بیسولفیت سکوئنسینگ می توان مورد بررسی و مطالعه قرار داد. متیلاسیون dna سبب ...

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