Dynamic capacity provisioning is a useful technique for handling the multi-time-scale variations seen in Internet workloads. In this article, we propose a novel dynamic provisioning technique for multi-tier Internet applications that employs (1) a flexible queuing model to determine how much of the resources to allocate to each tier of the application, and (2) a combination of predictive and reactive methods that determine when to provision these resources, both at large and small time scales. We propose a novel data center architecture based on virtual machine monitors to reduce provisioning overheads. Our experiments on a forty-machine Xen/Linux-based hosting platform demonstrate the responsiveness of our technique in handling dynamic workloads. In one scenario where a flash crowd caused the workload of a three-tier application to double, our technique was able to double the application capacity within five minutes, thus maintaining responsetime targets. Our technique also reduced the overhead of switching servers across applications from several minutes to less than a second, while meeting the performance targets of residual sessions.
Every attorney involved in criminal cases inevitably encounters a client who's accused of a sexual crime. Despite believability, it is one of the few crimes when the client is presumed guilty until proven innocent. Regardless of the attorney's role in the case it is imperative that attorneys understand the purpose of psychosexual evaluations (PSE), which client is a good candidate for the PSE, when they should be administered, and who provides such evaluations. This article is a very brief summary of what PSEs entail and has been specifically written for attorneys who practice in Oklahoma and Arkansas.
A slip or trip and fall accident can occur in almost any location, from a wet floor in the grocery store to a dangerously uneven sidewalk. Not every situation gives rise to legal liability, but valid slip and fall claims are filed and settled every year.
On December 3, 1984, at a pesticide ingredient manufacturing facility owned by Union Carbide, a leak occurred in the Methyl Isocyanate (MIC) plant. Due to the toxic nature of the gases released and the plant's proximity to local residences, the death toll was in the thousands; both plant workers and nearby residents. The first recorded public meeting in response to this incident was on December 9th, in Institute, WV, the site of Union Carbide's only US MIC production unit. Full disclosure: my father was a research & development chemist for Union Carbide and Institute is about 10 miles down the Kanawha River from my hometown of Charleston, WV.
Real Estate licensees cannot practice real estate in a vacuum; knowledge of real estate laws, codes of ethics, agency relationships and disclosures all merge together to give them the basis from which they may effectively practice and continue to build their competence, confidence and professionalism.
The public looks to safety professionals for guidance as experts in risk avoidance and hazard mitigation. This is reasonable as they are ostensibly trained in that area and, thus, in a better position to evaluate the risks inherent in different activities and to assess what can and should be done to alleviate or reduce those risks to an acceptable level. As such, it behooves safety professionals to be aware of not only safety-related heuristics that are presented to the public, but also the research that underlies that guidance to assess the appropriateness of the various safety rules that are promulgated to address potential hazards. In the real world, however, ostensible safety experts often simply accept these rules as representing appropriate, normal or typical behavior based on longevity, common sense or the simple frequency with which they are expressed.
There is plenty of enthusiasm and quite a bit of hype in various quarters about upcoming 5G; but will it be worthwhile for everyone?
Pharmacogenomics is a field that studies genetic differences in sensitivity to therapeutically used drugs. We have learned that some medications are not effective in some individuals, or super effective and even likely to result in adverse effects in others due to genetic polymorphisms. Similarly, toxicogenomics investigates sensitivities with toxic chemicals, including carcinogens.
In the absence of physical evidence or eyewitness testimony, establishing a criminal charge of child sexual abuse often boils down to a “he said, she said” weighing of credibility of the accuser and accused. As the burden of proof lies on the prosecution to establish the charge beyond a reasonable doubt, witness testimony becomes paramount in determining the outcome of the case. If the alleged victim is suffering from a serious mental illness, such as psychosis, that impairs one’s ability to either accurately recall the alleged abuse or distinguish reality from fantasy, witness credibility will suffer, and the defendant will likely be found not guilty. For both plaintiff and defense counsel, when there is any suspicion of psychotic illness in the accuser, it is critical to assess the following before trial: type and severity of mental illness, genetics, drug use, previous abuse, and neglect.
Transmission and Distribution high voltage line work is risky business, with hazards associated with a majority of the tasks being performed on routine and emergency jobs. In the Transmission and Distribution industry there are volumes of regulations, policies, procedures and work practices that electrical workers must adhere to, ingrain in their memories and utilize daily to not only work in a safe and productive manner but to also remain in legal compliance with those regulations.