The effect of the frequency variation of laser pulse in uniform magnetized plasma is considered in onedimensional laser wakefield acceleration and carried out particle simulation. It is shown that wakefield amplitude is increased threefold for the negative Gaussian chirped laser pulse in the magnetized plasma. In our simulation, electrons with initial energy about 0.3 MeV with initial energy sp...

The monochromatic nonparaxial vector fields that achieve a minimum spatial spread for a given directional spread are found. The derivation of these fields is analogous to the one presented in part I of this series for the case of scalar fields. This derivation is based on a variational treatment and multipolar expansion. The resulting lower bounds for the spreads of vector fields turn out to be...

6] Daniel B. Karron. The \spiderweb" algorithm for surface construction in noisy volume data. The pattern of density readings created by the two curves in gure 11 are identical. Thus one cannot distinguish a double surface crossing (or any even number of crossings) between two adjacent sampling points from no crossing at all. The key point here is that there is no reason to interpolate an addit...

veterinarians increasingly play a major contributory role in dairy practice and management. withincreasing importance of economical pressures, bioenvironmental limits and increasing demand for higherquality products, veterinarians are more involved in nutrition management and advice, both from aneconomical view of productivity and preventive aspects of veterinary medicine. the concept of food a...

We reviewed results of 78 diagnostic thoracoscopic examinations of patients with lung cancer and homolateral pleural effusion. The study stresses the main locations of pleural metastasis in cases of lung cancer and correlates these data with the pleural spread from extrathoracic primary neoplasms. Also pointed out is the operability of the present series and the different behavior in pleural me...

it summarises the author's long experience of malaria in India and in the tropics. The illustrations are mostly original and are particularly clear and well executed. Chapter I surveys the general life history of the malarial parasites and the mode of spread of malaria. Chapter II deals with the factors concerned in the spread of malaria: and brings out the important point that " even one infected

Digital photos are massively produced while digital cameras are becoming popular, however, not every photo has good quality. Blur is one of the conventional image quality degradation which is caused by various factors. In this paper, we propose a scheme to detect blurred images and classify them into several different categories. The blur detector uses support vector machines to estimate the bl...

Time-hopping patterns can be constructed from simple difference sets. By studying such constructions, we prove that whenever n 2, n, n 1, or n + 1 is a prime power, then we can construct timehopping patterns that have n terms, and are of length less than n2. We show by computation that such patterns can have length less then n2 n’ for all n 5 150. We also show that time-hopping patterns of n te...