five species of dominant halophyte plants including: salsola griffithii, chenopodium album, aeluropus logopoidies, alopecurus textillis and cardaria draba were sampled from sistan region at their late vegetative stage. the collected samples were dried at room temperature and ground, and their chemical components including: dry matter, organic matter, ash, crude protein, crude fat, as well as ce...

In this paper, we describe and evaluate our load distribution policy. This policy makes placement decisions for processes of each service in such a way that the estimated response time is optimized while the estimated throughput is in the range that the user desires. Our target service is a transaction service consisting of multiple processes that communicate with each other. Our target system ...

A dynamic booking policy for multiple fare classes that share the same seating pool on one leg of an airline flight, when seats are booked in a nested fashion and when lower fare classes book before higher ones, is determined. The dynamic policy of airline booking makes repetitive use of an optimal static policy over the booking period, based on the most recent demand and capacity information. ...

We extend the classic sequential stochastic assignment problem to include arrivals of workers. When workers are all of the same type, we show that the socially optimal policy is the same as the individually optimal policy where workers are given priority according to LCFS. This result also holds under several variants in the model assumptions. When workers have different types, we show that the...

(a) A policy of just playing item 3. This policy has depth 1. (b) A policy that plays item 2 first. If it is small, it plays item 1 whereas if it is large it plays item 3. After this, the final item is determined due to the fact that there are only 3 items in the problem. This policy has depth 2. Figure 4: Examples of policies in the simple 3 item, 2 sizes stochastic knapsack problem. Each blue...

The immunity model, as used in the GNU cfengine project, is a distributed framework for performing policy conformant system administration, used on hundreds of thousands of Unix-like and Windows systems. This paper describes the idealized approach to policy-guided maintenance, that is approximated by cfengine, building on the notion of ‘convergent’ operations, i.e. those that reach stable equil...

The Border Gateway Protocol (BGP) allows each autonomous system (AS) to select routes to destinations based on semantically-rich and locally-determined policies. This autonomously exercised policy freedom can cause instability, where unresolvable policy-based disputes in the network result in interdomain route oscillations. Several recent works have established that such instabilities can only ...