Our recent results on stability and multiplicity of ̄ow states for con®ned ̄ows of an incompressible Newtonian ̄uid are surveyed. The considered laminar ̄ows are caused by either thermal, mechanical, or electromagnetic effects and beyond the stability limit exhibit multiplicity of stable, steady or oscillatory, asymptotic states. Stability diagrams as well as examples of multiple ̄ow states are ...

The exploitation of marine renewable energy sources, such as offshore wind (OW), wave (WA), and tidal stream (TS) energy, is essential to reducing carbon emissions in China. Here, we demonstrate that a well-designed deployment OW-WA-TS joint would be better than OW alone improving performance terms the total amount temporal stability integrated power output northern Bohai Sea/Strait, Subei Shoa...

Feedback control equations have been developed and tested for computing wall-normal control velocities to control turbulent ow in a channel with the objective of reducing drag. The technique used is the minimization of a \cost functional" which is constructed to represent some balance of the drag integrated over the wall and the net control eeort. A distribution of wall velocities is found whic...

We introduce an algorithm that solves the maximum ow problem without generating ows explicitly. The algorithm solves directly a problem we call the maximum s-excess problem. That problem is equivalent to the minimum cut problem, and is a direct extension of the maximum closure problem. The concepts used also lead to a new parametric analysis algorithm generating all breakpoints in the amount of...

We present a novel progress-sensitive, ow-sensitive hybrid informationow control monitor for an imperative interactive language. Progress-sensitive informationow control is a strong information security guarantee which ensures that a program's progress (or lack of) does not leak information. Flow-sensitivity means that this strong security guarantee is enforced fairly precisely: we track inform...

This paper presents IFAudit , an approach for the audit of data ow policies in work ow models. IFAudit encompasses three steps. First, propagation graphs are generated from work ows' log data. They represent the explicit information ows caused, e.g., by data access and message-passing, that have occurred during the execution of the workow. Second, data ow policies expressing security and compli...

The paper suggests an approach for optimizing a material ow system consisting of two work-stations and an intermediate bu er. The material ow system may be a production system, a distribution system or a pollutant-deposit/removal system. The important characteristics are that one of the work-stations is unreliable (random breakdown and repair times), and that the performance function is formula...

Timed (or Stochastic) Data Flow Diagrams (TDFD's or SDFD's) introduced in [SB96b] are an extension of the Formalized Data Flow Diagrams, de ned in [LWBL96]. This extension allows us to assess the quantitative behavior (e. g., performance, throughput, average load of a bubble, etc.) as well as the qualitative behavior (e. g., deadlock, reachability, termination, niteness, liveness, etc.), eventu...

Background: In this study we aimed to evaluate biochemical, lipid and glycemic parameters compare serum neprilysin levels between overweight (OW) normal weight (NW) young women who are more prone gain weight.
 Material Methods: A total of 28 overweight/obese aged 22-34 years 34 age matched normal-weight were included in cross-sectional on voluntary basis. the subjects performed, Participan...