Today, in the rangeland management science and determination of rangecapacity, accurate and true information about range production is crucial. In fact, rangeproduction is considered as a basis for range management. The aim of this study was tocompare different methods for the estimation of forage production with four samplingmethods in the rangelands of Kurdistan province, Iran. The sampling m...

today, in the rangeland management science and determination of rangecapacity, accurate and true information about range production is crucial. in fact, rangeproduction is considered as a basis for range management. the aim of this study was tocompare different methods for the estimation of forage production with four samplingmethods in the rangelands of kurdistan province, iran. the sampling m...

In this paper, the performance of a new decision-directed signal reconstruction (DDSR) algorithm with optimal thresholds for use optical orthogonal frequency division multiplexing (OFDM) modulation is investigated. Clipping noise remains one main drawbacks in many practical OFDM transmission systems. It has been shown previous studies that time-domain based DDSR can be used to effectively reduc...

In this experiment 144 Hy-line (W36) laying hens, 65 to 77 weeks of age were separated into 4 treatments with 3 replicates (12 birds per replicate) in a completely randomized design experiment. The grass clipping wastes incorporated into a complete formulated layer diet, consisting on a corn and soybean based diet, were 0, 1.5, 3.0 and 4.5% in 1 to 4 experimental groups. The results showed that...

Orthogonal frequency-division multiplexing (OFDM) is a well-known technique for transmission of high rate data over broadband frequency-selective channels that mitigates intersymbol interference (ISI) caused by the delay spread of wireless channels. Space Frequency Block Coded technique (SFBC) is a spatial diversity technique used to achieve full transmission diversity with higher capacity. The...

| Multi-tone modulation (DMT, Discrete Multitone, OFDM, Orthogonal Frequency Division Multiplex) has the disadvantage of a quite high peak-toaverage ratio. Clipping of the high amplitudes caused by the analog circuitry leads to additional noise. In this contribution we show that in principal, so-called Analog Codes (Reed-Solomon Codes over complex numbers) can be used for eliminating this noise.

| Multi-tone modulation (DMT, Discrete Multitone, OFDM, Orthogonal Frequency Division Multiplex) has the disadvantage of a quite high peak-toaverage ratio. Clipping of the high amplitudes caused by the analog circuitry leads to additional noise. In this contribution we show that in principal so-called Analog Codes (Reed-Solomon Codes over complex numbers) can be used for eliminating this noise.

A robust and an efficient source and channel coding algorithms is proposed in this paper for the purpose of progressive transmission of images over wireless communication systems. This paper presents a modified orthogonal frequency division multiplexing system for robust progressive image transmission. A joint source channel coder is employed in the modified OFDM system. The set Partioning hier...

Alntract: Temporary Occlusion of the Middle Cerebral Artery in the Monkey: Clinical and Pathological Observations • The right middle cerebral artery (MCA) was exposed in monkeys via a retro-orbital microsurgical approach. In 43 animals a temporary occlusive clip was placed on the MCA origin for one to 24 hours. In 20 animals, the origin of the MCA was permanently occluded. Clinical evaluation o...