A note on linearized stability of Schwarzschild thin-shell wormholes with variable equations of state

We discuss how the assumption of variable equation of state (EoS) allows the elimination of the instability at equilibrium throat radius $a_0=3M$ featured by previous Schwarzschild thin-shell wormhole models. Unobstructed stability regions are found for three choices of variable EoS. Two of these EoS entail linear stability at every equilibrium radius. Particularly, the thin-shell remains stable as $a_0$ approaches the Schwarzschild radius $2M$. A perturbative analysis of the wormhole equation of motion is carried out in the case of variable Chaplygin EoS. The squared proper angular frequency $\omega_0^2$ of small throat oscillations is linked with the second derivative of the thin-shell potential. In various situations $\omega_0^2$ remains positive and bounded in the limit $a_0\rightarrow 2M$.Comment: Fifth version. 15 pages. Almost completely rewritten. Extended analysis. New reference

The modernist novel and early film: A case study of influences

Para este proyecto, que sitúa la novela inglesa modernista en su contexto cultural, tanto mi tutor como yo hemos decidido enfocar este estudio en las convenciones artísticas del cine en sus primeros años.35 página

Asthma-Related Hospitalization and Emergency Room Visits in Oakland

The City of Oakland has seen diminished childhood asthma rates. During the last few years more children have been able to qualify for Medi-Cal and other health insurance plans under the Affordable Care Act (ACA). Local programs work together with Medi-Cal and ACA to reduce the number of symptoms related to asthma by making sure children from low-income communities have access to primary care, medicine, and treatment. Unfortunately, the asthma-related hospitalizations and emergency room visits among children have continued to increase. These rates are even higher in low-income communities located near highly trafficked areas. To investigate this phenomenon, this study is an in-depth literature review of the current journal articles detailing the preventative measures taken to decrease the risk of a child having to go to the emergency room or be hospitalized. The literature review included information on environmental and social factors that may contribute to increased risk of severe symptoms that required hospitalization. This study found that more research is needed on how children interact with their health systems and their environment. Without follow-up after a child is discharged from the hospital, there is no guarantee that families will seek primary care, which leads to hospital readmission. Both the West Oakland zip code 94601 and the East Oakland zip code 94621 have higher hospitalization rates and emergency room visit rates compared to the county and other parts within Oakland. These residents are exposed to higher amounts of pollution because of the environment they live in. Pollution is a known trigger that worsens asthma symptoms. Many of the people living in these areas do not have the resources to move out to other neighborhoods because of their socioeconomic status

AdS4_4 solutions of massive IIA from dyonic ISO(7) supergravity

Explicit formulae are given for the consistent truncation of massive type IIA supergravity on the six-sphere to the SU(3)--invariant sector of $D=4$ ${\cal N}=8$ supergravity with dyonic ISO(7) gauging. These formulae are then used to construct AdS$_4$ solutions of massive type IIA via uplift on $S^6$ of the critical points of the $D=4$ supergravity with at least SU(3) symmetry. We find a new ${\cal N}=1$ solution with SU(3) symmetry, a new non-supersymmetric solution with SO(6) symmetry, and recover previously known solutions. We quantise the fluxes, calculate the gravitational free energies of the solutions and discuss the stability of the non-supersymmetric ones. Among these, a (previously known) G$_2$--invariant solution is found to be stable.Comment: 30 pages; v2: a few typos corrected and reference added; v3: A few clarifications and reference added. Version published in JHEP03(2016)07

Protection of Domestic Violence Victims Under the New York City Human Rights Law\u27s Provisions Prohibiting Discrimination on the Basis of Disability

This Article analyzes the need to create a new protected class of domestic violence victims to shield them from discrimination in employment. The Article examines arguments for and against proposed legislation to revise the human rights law governing disability, section 8-107 of the New York City Administration Code. The Article concludes that this legislation is unnecessary because the law already provides sufficient protection to domestic violence victims without requiring that victims disclose their domestic violence status to their employers

Response to Invasion by Antigen and Effects of Threshold in an Immune Network Dynamical System Model with a Small Number of Degrees of Freedom

We study a dynamical system model of an idiotypic immune network with a small number of degrees of freedom, mainly focusing on the effect of a threshold above which antibodies can recognise antibodies. The response of the system to invasions by antigens is investigated in the both models with and without the threshold and it turns out that the system changes in a desirable direction for moderate magnitude of perturbation. direction for moderate magnitude of perturbation. Also, the propagation of disturbance by an antigen is investigated in the system of one-dimensionally connected basic units taking the closed 3-clone system as a unit, and it is clarified that the threshold of the system has effects to enhance the stability of the network and to localise the immune response.Comment: 6 pages, 6 figures. Submitted to Prog. Theor. Phy