The Northeast China (NEC) was the most important agriculture areas and known as the Golden-Maize-Belt. Based on observed crop data and crop model, we design four simulating experiments and separate relative impacts and contribution under climate change, planting date shift, and varieties change as well change of varieties and planting date. Without planting date and varieties change, maize yiel...

Broadcasting is the process of information dissemination in a communication network in which a message, originated by one member, is transmitted to all members of the network. A broadcast graph is a graph which permits broadcasting from any originator in minimum time. The broadcast function B(n) is the minimum number of edges in any broadcast graph on n vertices. In this paper, we construct a b...

hamid reza arab1, hossein afshari1*, morteza sam daliri2, ghanbar laei1,   seyyed rasoul toudar2   1- faculty of agriculture, damghan branch, islamic azad university, damghan, iran   2- faculty of agriculture, chalous branch, islamic azad university, chalus, iran     received: 1august 2011 accepted: 23 november 2011       *corresponding author: email: [email protected]     abstract     in...

The clustered architecture of a mobile ad hoc network (MANET) has the virtue of keeping the node information locally which is suitable for scalability. Reducing broadcast redundancy in a clustered network can avoid the broadcast storm problem and save scarce resources such as bandwidth and energy. In this paper, we propose an approach that chooses a subset of nodes, called forward node set, to ...

We begin an investigation of broadcasting from multiple originators, a variant of broadcasting in which any k vertices may be the originators of a message in a network of n vertices. The requirement is that the message be distributed to all n vertices in minimum time. A minimum k-originator broadcast graph is a graph on n vertices with the fewest edges such that any subset of k vertices can bro...

In vehicular ad hoc networks, multi-hop broadcast is a key technique to disseminate warning messages for safety applications. Due to the vehicle mobility and lossy wireless channel, highly reliable, scalable and fast multi-hop broadcast protocol is very challenging to design. A number of solutions have been proposed in the past few years. However, the tradeoff between reliability and efficiency...

improved wireless video communication is challenging since video stream is vulnerable to channel distortions. Hence, the need to investigate efficient scheme for improved video communications. This research work investigated broadcast schemes, and proposes smart broadcast technique as a solution for improved video quality over constrained network such as wireless network under tight constraints...

abstract     in order to select the best planting distributions on the rows and study their effects on morphological traits and uptake amount of some nutrients including nitrogen, phosphorus, potassium and calcium in forage of common vetch (vicia sativa) a factorial experiment was carried out with randomized complete block design and 3 replications in research field of mohaghegh ardabili univer...

Broadcast and broadband communications have undoubt- edly become a part of today’s social life. Accessibility of content of interest to the audience at any place and at any time regardless of the type of content consumer device can have an effective contribution to the desire of the audience to use of the broadcast content. The HD and Ultra HD qualities, the desire for demand-driven application...