Parallel computing on networks of workstations (NOWs) allows effective use of existing hardware and software. NOWs are often connected using a broadcast medium such as an Ethernet, so it is natural to use broadcast as a communication primitive. However, existing parallel programs usually rely on point-to-point protocols for performing broadcasts since native broadcast schemes (UDP broadcast) do...

Mobile computing can be equipped with wireless devices to allow users retrieving information from anywhere at anytime. Recently, wireless data broadcast becomes a popular data dissemination method, especially for broadcasting public information to a large number of mobile subscribers at the same time. Access Latency and Tuning Time are two main criteria to evaluate the performance of a data bro...

nitrogen use efficiency (nue) is usually lower in paddy rice (oryza sativa l.) than in upland crops. for this reason, any attempt to improve nue through the use of different nitrogen (n) carriers, different rice cultivars, properly timed n application, the use of ni-trification and urease inhibitorsis of prime interest. moreover, zinc (zn) next to n seems to be the most important soil factor af...

This paper focuses on the problem of increasing the traffic capacity (volume of admissible traffic) of broadcast and multicast flows in a wireless mesh network (WMN). We study and suggest routing strategies where the process of constructing the forwarding tree considers three distinct features: (a) the ability of individual mesh nodes to perform link-layer broadcasts at multiple rates, (b) the ...

CONTEXT Depression, a sustained mood disorder caused by selective diminution of specialized cells in brain is increasing at an alarming rate. It will be the second largest morbid illness by next decade and is the leading cause of suicidal deaths. The available antidepressant medications benefit only a third of its recipients and have many side effects. Hence, it is imperative to search in Ayurv...

Siegrid Schoch3 and M onica Ihl a Botanisches Institut, Universität München, D-80638 München, Menzingerstr. 67, Germany b Departamento de Ingeniena Quimica, Universidad de La Frontera, cas. 54-D, Temuco, Chile Z. Naturforsch. 53c, 21-26 (1998); received September 19/October 11, 1997 Chlorophyll, Chlorophyllase, Substrates Specificity, Vegetables, Zn pheophytin The activity of chlorophyllase (ch...

In this paper, we discuss energy efficient broadcast in ad hoc wireless networks. The problem of our concern is: given an ad hoc wireless network, to find a broadcast tree such that the energy cost of the broadcast tree is minimized. Each node in the network is assumed to have a fixed level of transmission power. We first prove that the problem is NP-hard, and propose three heuristic algorithms...

to evaluate the effect of zn sulfate foliar application on morphologic and quantitative characteristics of safflower (carthamus tinctorius l.) cultivars, a field experiment carried out in ramin agriculture and natural resources university of khouzestan, iran, in a factorial arrangement in a randomized complete block design with four replications, during 2012-2013. treatments consisted of two sp...