The rapid spread of Covid-19 since January 2020 has dramatically affected financial markets and economies worldwide, especially in the United States. This paper aims to utilize regression model D-Vine Copula introduced by Kraus investigate effects each three input variables (number Corona cases, number deaths, news)on our response which are famous indices U.S(S&P 500, NASDAQ 100 Dow Jones). Als...

A milking operation simulation model was developed using an object-oriented approach. Six object classes were defined: things, living things, animals, operator, cow, and parlor. Operator, cow, and parlor classes were the basic units of the model. Each object in the model is a self-contained unit that represents its real world counterpart. The model operation and events were scheduled by sending...

Prenatal care refers to accurate and consistent performance of the principles important to maintain healthy pregnancy outcomes and also for mother and child health. One of the new indices to assess the adequacy of care is Revised Graduated Index of Prenatal Care Utilization (R-GINDEX).The study aims to assess the relationship between quantitative prenatal care factors and preterm labor and low ...

Indonesia sustained an average increase in agricultural output of 3.6% per year between 1961 and 2006, resulting in a more than fivefold increase in real output. This paper constructs Tornqvist-Thiel indices of agricultural outputs, inputs and total factor productivity (TFP) to examine the sources of growth in Indonesian agriculture over this period. The paper extends previous work on measuring...

OBJECTIVES We examined the importance of social support in promoting thriving health among indigenous Canadians, a disadvantaged population. METHODS We categorized the self-reported health status of 31625 adult indigenous Canadians as thriving (excellent, very good) or nonthriving (good, fair, poor). We measured social support with indices of positive interaction, emotional support, tangible ...

In the current century, agriculture sustainability and the reduction of environmental pressure are two main objectives of the management of agro-ecosystems that is challenged by energy inefficiency. In this respect, the present study assessed one of the most important planting systems in Sistan region by emergy analysis approach. It analyzed all inputs of greenhouse cucumber production system i...

introduction: one the most anxious moments for mothers and families is labor pain and various methods for its relief have an effect on labor management, patient satisfaction and labor outcome. both pharmacological and non-pharmacological methods are used to relieve labor pain, but in recently years, researchers have focused their attention to non-pharmacological methods for reduction of labor p...

OBJECTIVES The evaluation of hypoxia index (HI) in the prediction of abnormal fetal heart rate at delivery in uncomplicated pregnancies. MATERIAL AND METHODS The study group included 148 pregnant patients at term (69 patients with and 79 without brain sparing effect). The value of C/U ratio and HI was determined. Next, its value in predicting abnormal fetal heart rate during labor was evaluat...

Topographic mapping of river boundary area is important in the environment management and hydrological modeling. In recent years, delineation of river by means of remotely sensed image classification has been widely investigated. Prime advantages of remote sensing technology for river delineation are reducing labor cost and time and elevating restrictions on ground surveys. However, these techn...