The authors evaluated the ability of a reverse transcription-polymerase chain reaction (RT-PCR) assay to detect classical swine fever virus (CSFV) in comparison with virus isolation and detection by an indirect immunoperoxidase assay (VI-IPA). To determine the specificity of the assay, samples from 60 spleens, 45 tonsils, ten submandibular lymph nodes, eight mesenteric lymph nodes and four kidn...

We formulate the importance sampling problem as a parametric minimization problem under the original measure and use a combination of infinitesimal perturbation analysis (IPA) and stochastic approximation (SA) to minimize the variance of the price estimation. Compared to existing methods, the IPA estimator derived in this paper has significantly smaller estimation variance and doesn’t depend on...

Chemical modification of wood with isopropenyl acetate (IPA) using iodine (I2) as catalyst has been carried out. Rubber wood (Hevea brasiliensis) specimens were reacted with IPA using iodine (I2) catalyst at 95°C up to 10 h under solvent free conditions. The effect of catalyst concentration and reaction time was studied. The extent of acetylation was measured by determining weight percent gain ...

It has been shown that infinitesimal perturbation analysis (IPA) provides very efficient algorithms for estimating derivatives in a broad class of discrete event dynamic systems (DEDS). But in its simple form, it fails in most multiclass DEDS. In this paper, we propose a revised IPA for a multiclass G/G/1 queue.

conclusions in patients with liver cirrhosis, when there is evidence of severe pulmonary disease without proper response to treatment, the possibility of invasive pulmonary fungal infection should be considered. introduction invasive pulmonary aspergillosis (ipa) is a fatal disease usually occurring in patients with neutropenia resulted from chemotherapy for malignancy. the other risk factors i...

BACKGROUND Pulmonary aspergillosis (PA) is one of the most serious complications in immunocompromised patients, in particular among hematopoietic stem cell transplants (HSCT) and patients with hematological malignancies. OBJECTIVES The current study aimed to evaluate the incidence of PA and utility of molecular methods in HSCT and patients with hematological malignancies, four methods includi...

Recently, various algebraic integer programming (IP) solvers have been proposed based on the theory of Gröbner bases. The main difficulty of these solvers is the size of the Gröbner bases generated. In algorithms proposed so far, large Gröbner bases are generated by either introducing additional variables or by considering the generic IP problem IPA,C . Some improvements have been proposed such...

Purpose: To determine objectively measured intensity of physical activity (iPA) and its relationship to high-density lipoprotein cholesterol (HDL-C), lowdensity lipoprotein cholesterol (LDL-C), and the LDL/HDL ratio in women. Methods: Two hundred seventy-two women (40.1 y) wore CSA-MTI model 7164 accelerometers to index intensity and volume of physical activity for 7 d. Blood lipids were measur...

This paper presents a novel machine learning technique in a logic programming environment: Inductive Prediction by Analogy (IPA). IPA learns the description a target predicate similar to a source predicate from examples of the target predicate. Akey feature of IPAis that it uses analogies to constrain the space of hypotheses using taxonomic information represented by first-order predicate logic...

BACKGROUND Physical activity plays an important role in individual health at all stages of life. However, evidence is lacking regarding the level of moderate to vigorous physical activity (MVPA) and the related factors to insufficient physical activity (IPA). METHODS A sample of 1060 students aged 12-15 years from nine public junior high schools in China were invited to participate in this st...