Studies of tree seedling physiology and growth under field conditions provide information on the mechanisms underlying inter- and intraspecific differences in growth and survival at a critical period during forest regeneration. I compared photosynthetic physiology, growth and biomass allocation in seedlings of three shade-tolerant tree species, Virola koschynii Warb., Dipteryx panamensis (Pitti...

in this study, a model of optimal allocation of subsidy was developed based on the microeconomic optimization theory. the model was evaluated by applying to premium subsidy allocation to the cereal crops’ (corn, rain fed barley and wheat, and irrigated barley and wheat) insurance in iran. in developing the model, it was assumed that, policymaker on behalf of society, follows a social utility ma...

This paper presents a new medium access method for a wireless inhouse local area network (LAN). Several existing (draft) standards for wireless communication (e.g. IEEE 802.11, HIPERLAN or Magic WAND) cannot full ll quality of service demands for typical inhouse applications (e.g. video, audio, phone and computer) or they set up the need for a central hub. We show that quality of service demand...

This article presents HICCUPS (HIdden Communication system for CorrUPted networkS), a steganographic system dedicated to shared medium networks including wireless local area networks. The novelty of HICCUPS is: usage of secure telecommunications network armed with cryptographic mechanisms to provide steganographic system and proposal of new protocol with bandwidth allocation based on corrupted ...

Although the new generations of FPGAs provide support for partial and dynamic configuration, the huge reconfiguration latency is still a major shortcoming of the current FCCMs . Software and hardware techniques (compiler optimizations, configuration prefetching) have been used in order to reduce the impact of the configuration overhead on the overall performance. Nevertheless, these techniques ...

A major issue in the design and operation of ad hoc networks is sharing the common spectrum among links in the same geographic area. Bandwidth allocation, to optimize the performance of networks in which each station can converse with at most a single neighbor at a time, has been recently studied in the context of Bluetooth Personal Area Networks. There, centralized and distributed, capacity as...

Enterprise-wide distributed computing systems are inherently stochastic and the performance management of distributed applications running on the top of DCS is a complex and computationally hard task. In this paper, we define the enterprise distributed application and provide queueing analysis on the relationship between the application level performance parameters and the network and computer ...