Basis = price of hedged asset-price of hedging instrument problem of basis risk: uncertainties of processes describing the evolution of prices of asset and hedging instrument not identical, only highly correlated Example 1: weather derivatives hedged asset: heating oil sales, hedging instrument: HDD derivative HDD derivative: contract paying a premium in case HDD above a critical threshold Exam...

Since patterns in digital maskless lithography are formed by accumulating the exposure energy of a high-density beam spot array, the accurate position measurement of the spot array is essential for the precise operation of the system. We propose a measurement technique for detecting the position of a high-density, subpixel size beam spot array with a charge-coupled device (CCD). In order to det...

We consider a stochastic inventory control problem in which a buyer makes procurement decisions while facing periodic random demand and two supply sources, namely, a long-term contract supplier and a spot market. The contract between the buyer and the supplier partially shields the latter from the vicissitudes of the spot market, in that the price paid by the buyer to the supplier is only parti...

statement of the problem : enamel white spot lesions are one of the problems associated with fixed orthodontic treatment that compromise esthetics. porpuse the aim of this study was to evaluate the effect of fluoride varnish on the improvement of white spot lesions after fixed orthodontic treatment. materials and methods in this randomized clinical trial, 20 patients with at least two white spo...

Drought stress in plants, the change (increase or decrease) in the production of plant proteins. Proteomics in recent years one of the most powerful tools that help us to study the changes in protein In order to investigate the proteome of wheat leaves in response to terminal drought, two genotypes susceptible and resistant wheat genotypes were evaluated under irrigated (non-stress) and rain-fe...

The purpose of this article is to demonstrate the utility of the large spot size (LSS) setting using a binocular laser indirect delivery system for peripheral ablation in children. One patient with bilateral retinopathy of prematurity received photocoagulation with standard spot size burns placed adjacently to LSS burns. Using a pixel analysis program called Image J on the Retcam picture, the a...

In parallel systems it is possible for several processors to request concurrent access to a shared data structure such as a synchronization variable. Such an access pattern causes what is known as hotspot contention. In shared-memory multiprocessor systems that use a multistage interconnection network, hot-spot contention may result in "tree saturation" that degrades the system performance. It ...

Single-particle tracking (SPT) has become an important method to bridge biochemistry and cell biology since it allows direct observation of protein binding and diffusion dynamics in live cells. However, accurately inferring information from SPT studies is challenging due to biases in both data analysis and experimental design. To address analysis bias, we introduce 'Spot-On', an intuitive web-i...

in this paper, dissimilar resistance spot welding of aisi 1075 eutectoid steel to aisi 201 stainless steel is investigated experimentally. for this purpose, the experiments are designed using response surface methodology and based on four-factor, five-level central composite design. the effects of process parameters such as welding current, welding time, cooling time and electrode force are inv...

To simulate the effect of free st ream turbulence on turbulent spot formation, experiments were conducted on the interaction of localized three-dimensional disturbances with the harmonic waves in a laminar boundary layer on a flat plate. Experiments conducted in three-dimensional diverging flow (but zero pressure gradient) show, while individually the disturbances decay downstream, their intera...