Implementation of wireless wideband transmitters using ∆Σ DACs requires very high speed modulators. Digital MASH ∆Σ modulators are good candidates for speed enhancement using interleaving because they require only adders and can be cascaded. This paper presents an analysis of the integrator critical path of two-channel interleaved ∆Σ modulators. The bottlenecks for a high-speed operation are id...

An activity network is an acyclic graph with non-negative weights and with a unique source and destination. A project consisting of a set of activities and precedence relationships can be represented by an activity network and the mathematical analysis of the network provides useful information for managing the project. In a traditional activity network, it is assumed that an activity always be...

The ability to predict the performance of a simulationapplication before its implementation is an important factor to the adoption of parallel simulation technology in industry. Ideally, a simulationist estimates the inherent parallelism of a simulation problem to determine whether it is worthwhile to invest resources to carry out a parallel simulation. In this paper, we proposed an analytic me...

A full digital self-timed clock generation scheme is developed, where multiple internal clocks are self-generated for each external request. The internal clock period is designed to be the critical path delay of the internal system at all operating environments. This scheme can be applied to time-multiplexed implementations, self-timed operation , and low-power applications.

Branch Prediction is an important factor in achieving high performance in modern microprocessors. Branch predictors are used to keep pipeline filled with instructions before the outcome of the branch condition is known. On the other hand, branch misprediction halts fetching of useful instructions. The situation becomes worse when we take into account the cache pollution a branch misprediction c...

Risk is mitigated in the course of reliable prediction. A probabilistic model is proposed to predict the risk effects on time and cost of construction projects. Project managers and consultants can use the model in estimating project cost and duration based on historic data. Statistical regression models and sample tests are developed using real data of 140 projects. The research objective is t...

In this paper we discuss the concept of space-time diagrams as a representation of the execution of an application, and then give a method, based on critical path analysis, for calculating nontrivial upper bounds on the potential parallelism, known as the average parallelism, a complement to the speedup and efficiency.

We study the problem of the manager of a project consisting of two sub-projects or tasks which are outsourced to different subcontractors. The project manager earns more revenue from the project if it is completed faster, but he cannot observe how hard subcontractors work, only the stochastic duration of their tasks. We derive the optimal linear incentive contracts to offer to the subcontractor...

The trend towards larger structures and aggressive clock frequencies has been a fundamental driving force for modern microprocessor design. While one approach is to deeply pipeline any high delay structure, dependencies and critical loops have made it increasingly difficult to speed execution through extensive pipelining. One alternative is to remove larger structures from the critical path. We...