The writer’s theory of surface instability of au elastic body under initial stress in finite strain is extended to anisotropic elasticity. The general characteristic equation for surface instability is derived. In addition, the surface deflexion under a normal load is evaluated for the subcritical case of initial stress. The analysis includes the case in which gravity is taken into account. It ...

Reliable and efficient operation of deregulated electricity markets requires supply and demand elasticity. This paper presents incentive control of spinning reserves in electricity multi-markets using game theory. Interruptible load contracts (ILC) could reduce the amount of spinning reserve requirements during system contingencies such as transmission congestion. It is shown that the power uti...

__.________________.______ Introduction _ _ _ ___ _ _ .. Principal features of the theory of elasticity Stress __________._____.__.___ ___ Types of stress. ______________.__.. Variation with orientation of stress at a point Stresses in static equilibrium _ Strain . ... _.... _........ . _...._.. ......... Definitions and notation .. . Stress-strain relations in the elastic state. Condition of c...

This paper describes three lumped parameters models for the study of the dynamic behavior of a boom crane. The models here proposed allows to evaluate the fluctuations of the load arising from the rope and structure elasticity and from the type of the motion command imposed by the winch. A calculation software was developed in order to determine the actual acceleration of the lifted mass and th...

In a petabyte-scale file system, metadata access performance and scalability will significantly affect the whole system’s performance and scalability. We present a new approach called Dynamic Hashing (DH) for metadata management. DH introduces the RELAB (RElative LoAd Balancing) strategy to adjust the metadata distribution when the workload changes dynamically. Elasticity strategy is proposed t...

Introduction In the 1970s, exterior bonded steel reinforcement was used sporadically to reinforce bridges to attain higher service load capacities. This steel post-strengthening system consisted of steel straps bonded with epoxies to the exterior of concrete beams. An alternative to the steel retrofit is woven carbon fiber reinforced polymer fabric applied in the same manner as steel. Carbon fi...

This paper deals with stage motion control system for scene manipulation during theater performance. Particular task of rope drum control is presented and solved. The system exhibits an oscillatory dynamics due to the elasticity of the rope with a hanging load. The goal was to find a simple control strategy based on a common cascade PID structure which is available in most of the industrial AC ...

Realizing elasticity in cloud applications today is often a cumbersome process, requiring applications to integrate with services like elastic load balancers and/or be rewritten to accommodate distributed frameworks like map/reduce or cluster-based operating systems. In this paper, we introduce the concept of ElasticOS, which enables a process (or even a single thread) to stretch its associated...

In the manufacturing and assembly of a toroidal drive mechanism, errors have great influence on load sharing mechanism. order to improve load-sharing characteristics floating oil film structure system is designed support planetary gear compensate for inaccuracies in mechanism parts this paper. The elasticity hydrodynamic effect allow achieve its own small floatation produce certain axial displa...

This paper proposes a resource allocation model for ‘‘Software as a Service’’ systems that maximizes the service provider’s revenues and the resource utilization under a heavy load. Employing the elasticity of virtualized infrastructures, the proposed model dictates that system resources must be fully exploited by incoming jobs, even if they do not satisfy their requirements completely. This yi...