Risk mitigation decisions for it security

Enterprises must manage their information risk as part of their larger operational risk management program. Managers must choose how to control for such information risk. This article defines the flow risk reduction problem and presents a formal model using a workflow framework. Three different control placement methods are introduced to solve the problem, and a comparative analysis is presented using a robust test set of 162 simulations. One year of simulated attacks is used to validate the quality of the solutions. We find that the math programming control placement method yields substantial improvements in terms of risk reduction and risk reduction on investment when compared to heuristics that would typically be used by managers to solve the problem. The contribution of this research is to provide managers with methods to substantially reduce information and security risks, while obtaining significantly better returns on their security investments. By using a workflow approach to control placement, which guides the manager to examine the entire infrastructure in a holistic manner, this research is unique in that it enables information risk to be examined strategically. © 2014 ACM

Teleportation of the one-qubit state in decoherence environments

We study standard quantum teleportation of one-qubit state for the situation in which the channel is subject to decoherence, and where the evolution of the channel state is ruled by a master equation in the Lindblad form. A detailed calculation reveals that the quality of teleportation is determined by both the entanglement and the purity of the channel state, and only the optimal matching of them ensures the highest fidelity of standard quantum teleportation. Also our results demonstrated that the decoherence induces distortion of the Bloch sphere for the output state with different rates in different directions, which implies that different input states will be teleported with different fidelities.Comment: 17 pages, 10 figure

Cyber HIV/AIDS Intervention in Singapore: Collective Promises and Pitfalls

This article examines the opportunities and challenges of using the Internet both to promote collective action and identity in the Singapore gay community and as a medium for health intervention. It presents a case study of a community-empowerment project by civil society group Action for AIDS. Framed within a societal context which is hostile toward gay people, and in a place where mixed-media campaigns targeting men who have sex with other men (MSM) are prohibited, this article explores the viability of the Internet as an alternative channel to mass media in reaching out to MSM in Singapore. Through a series of semi-structured interviews and virtual ethnographic content analyses, this article weighs the democratizing and collaborative affordances of the Internet against the uninhibited nature of online discussions in the formation of a counterpublic of sexuality where gay individuals collectively elaborate on meanings about erotic practices, identity, and relations between each other and with the state

John Blair Deaver, M.D., and his marvelous retractor.

John Blair Deaver was born near Buck, Pennsylvania, in Lancaster County on July 25, 1855, to Dr. Joshua Montgomery Deaver and Elizabeth Clair Moore. The elder Deaver was a reputable country physician, educated at the University of Maryland, who fathered three physicians and a college president. John Blair Deaver (Fig. 1) went to boarding school at West Nottingham Academy in Maryland. After boarding school he taught in Lancaster County country schools to raise funds to attend the nation’s first medical school, the University of Pennsylvania. On receiving his M.D. degree in 1878, Dr. Deaver completed 1-year internships at both Germantown Hospital and Philadelphia Children’s Hospital, after which he embarked into clinical practice. Alongside his brother, Dr. Harry Clay Deaver, he made home visits to patients to perform surgeries as well as managed a busy 16th Street and Vine Street Philadelphia office

Concurrent Magnetic and Metal-Insulator Transitions in (Eu,Sm)B_6 Single Crystals

The effects of magnetic doping on a EuB_6 single crystal were investigated based on magnetic and transport measurements. A modest 5% Sm substitution for Eu changes the magnetic and transport properties dramatically and gives rise to concurrent antiferromagnetic and metal-insulator transitions (MIT) from ferromagnetic MIT for EuB6. Magnetic doping simultaneously changes the itinerant carrier density and the magnetic interactions. We discuss the origin of the concurrent magnetic MIT in (Eu,Sm)B_6.Comment: 13 pages, 3 figures, final version to appear in Appl. Phys. Lett

Habitat Effects on the Occurrence of Parasites Inhabiting the Sergeant Major, Abudefduf saxatilis (Linnealus), with a List of Parasites of Caribbean Damselfishes

In June 1976 the parasitic faunas of sergeant majors, Abudefduf saxatilis, from a coral reef habitat near Akumal, Quintana Roo, Mexico and from an estuarine habitat in the adjacent caleta at Yalku were compared. The frequencies of occurrence of the nematode Spirocamallanus, the hemiurid trematode Genolinea the haplosplanchnid trematode Schikhobalotrema, and the copepod Holobomolochus nothrus, were dependent on collection locality. The residency of the damselfish in habitats with radically different salinity regimes, as well as the associated biotic communities within these habitats, are suspected causes of the observed differences

John Y. Templeton III: Pioneer of modern cardiothoracic surgery.

John Young Templeton III was born in 1917 in Portsmouth, Virginia, and graduated from Jefferson Medical College in 1941. He completed his residency training under Dr. John H. Gibbon, Jr., and was the first resident who worked on Gibbon\u27s heart-lung machine. After his training, he remained at Jefferson as an American Cancer Society fellow and Damon Runyon fellow and went on to become the fourth Samuel D. Gross Professor and Chair of the Department of Surgery in 1967. Dr. Templeton was the recipient of numerous grants and published over 80 papers in the field of cardiothoracic surgery. As a teacher and mentor, he was a beloved figure who placed great faith in his residents. He participated in over 60 professional societies, serving as president to many such as the Philadelphia Academy of Surgery and the Pennsylvania Association of Thoracic Surgery. He was also recognized through his many awards, in particular the John Y. Templeton III lectureship established in 1980 at Jefferson of whom Denton Cooley was the first lecturer. Dr. Templeton retired from practice in 1987. He is forever remembered as an important model of a modern surgeon evident in numerous academic achievements, the admiration and affection of his trainees, and the lives of patients that he had touched

John H. Gibbon, Jr., M.D.: surgical innovator, pioneer, and inspiration.

Throughout history there have been many discoveries that have changed the world, including Albert Einstein’s theory of relativity, Alexander Graham Bell’s telephone, and Jack Kilby and Robert Noyce’s microchip. There are a few analogous contributions that have been made in medicine: Sir Alexander’s discovery of penicillin, Lister’s principles of antiseptic technique, Salk and Sabin’s vaccines for polio, as well as numerous others. These innovative thinkers all had two factors in common. First, they were pioneers who faced problems that had no solutions at the time and who refused to accept the status quo in the face of great scrutiny and resistance. Second, their contributions would forever change the world. In 1930, a profound experience with a patient would forever change Dr. John H. Gibbon, Jr. and stimulate an idea to create a device that at the time sounded audacious and impossible. His device would temporarily take the role of both the heart and lungs to make repairs inside the heart or the great vessels. Twentythree years later, Dr. Gibbon used his machine to perform the first successful bypass-assisted open heart surgery

Processing Aquaculture System Biosolids by Worm Composting—Vermicomposting

Recirculating Aquaculture Systems (RAS) use less water than open pond systems and the concentrated wastes generated by fish in RAS are easier to collect and reuse. High operating costs limit RAS use to high-value species production. One strategy to improve productivity and offset the high operating costs is to convert the solid waste from the aquaculture systems to more valuable byproducts

A SIR model on a refining spatial grid: Law of Large Numbers

We study in this paper a compartmental SIR model for a population distributed in a bounded domain D of $\mathbb{R}^d$, d= 1, 2, or 3. We describe a spatial model for the spread of a disease on a grid of D. We prove two laws of large numbers. On the one hand, we prove that the stochastic model converges to the corresponding deterministic patch model as the size of the population tends to infinity. On the other hand, by letting both the size of the population tend to infinity and the mesh of the grid go to zero, we obtain a law of large numbers in the supremum norm, where the limit is a diffusion SIR model in D