Multi-leptons and Top-jets in the Hunt for Gluinos in R-parity Violating Supersymmetry

The presence of R-parity ($\mathcal{R}_p$) violation offers intersting decay channels for the gluinos. In this work we present a new search strategy for the gluinos in the presence of semileptonic $\mathcal{R}_p$ violating couplings $\lambda^{'}_{133}$ and $\lambda^{'}_{233}$. We consider two scenarios (i) $\lambda^{'}$ induced 3-body decay of gluinos to a top quark ($t$), a bottom quark ($b$) and a light lepton ($\ell$) (ii) cascade decay of gluinos to top quarks and neutralinos ($\widetilde{\chi}_1^0$) followed by the decay of $\widetilde{\chi}_1^0$ to $t$, $b$ and $\ell$ through $\lambda^{'}$ couplings. We present two different search procedures which are common to both the scenarios. While the first one involves the traditional approach with multi-leptons and $b$-tagged jets, the second one employs the more recent technique to reconstruct highly energetic hadronically decaying top quarks. We perform a detailed simulation of the signal as well as all the relevant Standard Model backgrounds to show that the second procedure offers slightly better sensitivity for gluino discovery. In both the procedures, a $\geq$ 5$\sigma$ discovery is possible for the gluino mass in the range 1.5 -1.7 TeV at 14 TeV LHC with 50 fb$^{-1}$ integrated luminosity.Comment: Event selection cuts optimized, results significantly improved, more discussions added. Version to appear in JHE

Real Time Modulation of End Diastolic Volume as a Novel Therapy for Dilated Cardiomyopathy and Congestive Heart Failure

Congestive heart failure (CHF) is a major public health issue in the developed and developing world. In the U.S., CHF affects more than 5.3 million people with 550,000 new cases diagnosed each year. Approximately 20 percent of hospitalizations are due to acute CHF, incurring a health-care system cost of $34.4 billion. Heart failure has two main forms: systolic dysfunction and diastolic dysfunction. Many patients with heart failure have both types of dysfunction. Though systolic heart failure is more commonly mentioned, there is growing recognition that CHF caused by a predominant abnormality in diastolic mechanics (filling and relaxation) causes significant morbidity and mortality. In patients with systolic heart failure, there are abnormalities in the pressure-volume relationship during systole that includes decreased ejection fraction (EF), stroke volume, and stroke work. In patients with isolated diastolic heart failure, the only abnormality in the pressure-volume relationship occurs during diastole, when there are increased diastolic pressures with normal diastolic volumes. Whereas the diastolic pressure-volume relationship may reflect a more compliant chamber, increased diastolic pressure and abnormal relaxation reflect the presence of abnormal diastolic function. Therefore, patients with symptomatic heart failure have abnormalities in diastolic function, those with a normal EF have isolated diastolic heart failure, and those with a decreased EF have combined systolic and diastolic heart failure. Thus a critical gap in present device solutions to CHF is a single device that can address concurrently reduction of LV chamber dimensions (remodeling) and also improve and not impede LV filling by lowering the filling pressure (i.e. without impeding diastolic function). The biphasic support and recoil device technology investigated in this dissertation would provide a means for guided intervention whereby normal growth and remodeling processes are directed toward a gradual reduction in size in systolic dysfunction and enhanced ventricular filling using diastolic recoil properties of the device. In this dissertation prototyping and testing of a novel minimally invasive cardiac device technology is presented. Our tests indicate that this technology has the necessary mechanical actions to enable the integration of therapy for systolic and diastolic dysfunction in two principal ways (1) adjustable passive cardiac support or progressive constraint to facilitate the gradual reduction in size of dilated, diseased hearts, thereby improving pumping efficiency; (2) diastolic recoil technology with the ability to transfer energy from systolic contraction to diastolic filling, which may potentially reduce ventricular filling pressures, without compromising ventricular systolic function

Role of magnetic field on the electronic properties of an α\alpha-T3T_3 ring

We consider a quantum ring of a certain radius R built from a sheet of the $\alpha$-$T_3$ lattice and solve for its spectral properties in presence of an external magnetic field. The energy spectrum consists of a conduction band, a valence band and a zero energy flat band, all having a number of discrete levels therein which can be characterized by the angular momentum quantum number, m. The energy levels in the flat band are infinitely degenerate irrespective of the value of $\alpha$. We reveal a two-fold degeneracy of the levels in the conduction band as well as in the valence band for $\alpha$ = 0 and $\alpha$ = 1. However, the m = 0 level for $\alpha$ = 1 is an exception. Corresponding to an intermediate value of $\alpha$, namely, 0 <$\alpha$< 1, the energy levels become nondegenerate. The scenario remains unaltered when the ring is threaded by a magnetic flux which is an integer multiple of the flux quantum. We also calculate the persistent current which exhibits quantum oscillations as a function of the magnetic field with a period of one flux quantum at a particular Dirac point, which is often referred to as a valley. The total current oscillates with a periodicity of one flux quantum for any intermediate value of $\alpha$. We have also explored the effect of a mass term (that breaks the sublattice symmetry) in the Hamiltonian. In the absence of a magnetic field, the energy levels in the flat band become dispersive, except for the m = 0 level in the case of $\alpha$ = 1. In presence of the field, each of the flat band levels becomes dispersive for any $\alpha \neq$ 0. Finally, we also see the effect of the mass term on the behaviour of the persistent current, which shows periodicity of one flux quantum, but the total current remains finite for all values of $\alpha$.Comment: 10 pages, 9 figure

Developmental Impact Analysis of an ICT-Enabled Scalable Healthcare Model in BRICS Economies

This article highlights the need for initiating a healthcare business model in a grassroots, emerging-nation context. This article’s backdrop is a history of chronic anomalies afflicting the healthcare sector in India and similarly placed BRICS nations. In these countries, a significant percentage of populations remain deprived of basic healthcare facilities and emergency services. Community (primary care) services are being offered by public and private stakeholders as a panacea to the problem. Yet, there is an urgent need for specialized (tertiary care) services at all levels. As a response to this challenge, an all-inclusive health-exchange system (HES) model, which utilizes information communication technology (ICT) to provide solutions in rural India, has been developed. The uniqueness of the model lies in its innovative hub-and-spoke architecture and its emphasis on affordability, accessibility, and availability to the masses. This article describes a developmental impact analysis (DIA) that was used to assess the impact of this model. The article contributes to the knowledge base of readers by making them aware of the healthcare challenges emerging nations are facing and ways to mitigate those challenges using entrepreneurial solutions

Parameterized Streaming Algorithms for Min-Ones d-SAT

In this work, we initiate the study of the Min-Ones d-SAT problem in the parameterized streaming model. An instance of the problem consists of a d-CNF formula F and an integer k, and the objective is to determine if F has a satisfying assignment which sets at most k variables to 1. In the parameterized streaming model, input is provided as a stream, just as in the usual streaming model. A key difference is that the bound on the read-write memory available to the algorithm is O(f(k) log n) (f: N -> N, a computable function) as opposed to the O(log n) bound of the usual streaming model. The other important difference is that the number of passes the algorithm makes over its input must be a (preferably small) function of k. We design a (k + 1)-pass parameterized streaming algorithm that solves Min-Ones d-SAT (d >= 2) using space O((kd^(ck) + k^d)log n) (c > 0, a constant) and a (d + 1)^k-pass algorithm that uses space O(k log n). We also design a streaming kernelization for Min-Ones 2-SAT that makes (k + 2) passes and uses space O(k^6 log n) to produce a kernel with O(k^6) clauses. To complement these positive results, we show that any k-pass algorithm for or Min-Ones d-SAT (d >= 2) requires space Omega(max{n^(1/k) / 2^k, log(n / k)}) on instances (F, k). This is achieved via a reduction from the streaming problem POT Pointer Chasing (Guha and McGregor [ICALP 2008]), which might be of independent interest. Given this, our (k + 1)-pass parameterized streaming algorithm is the best possible, inasmuch as the number of passes is concerned. In contrast to the results of Fafianie and Kratsch [MFCS 2014] and Chitnis et al. [SODA 2015], who independently showed that there are 1-pass parameterized streaming algorithms for Vertex Cover (a restriction of Min-Ones 2-SAT), we show using lower bounds from Communication Complexity that for any d >= 1, a 1-pass streaming algorithm for Min-Ones d-SAT requires space Omega(n). This excludes the possibility of a 1-pass parameterized streaming algorithm for the problem. Additionally, we show that any p-pass algorithm for the problem requires space Omega(n/p)

LA INCLUSIÓN DE LA MEDIACIÓN COMO PERTINENCIA EN LOS PLANES DE ESTUDIO DEL NIVEL SUPERIOR EN LA UNIVERSIDAD AUTÓNOMA DEL ESTADO DE MÉXICO

La presente obra tiene como finalidad analizar la figura de los medios alternos de solución de conflictos a través de la historia, ya que su origen es más o menos desde los años sesenta. Los MEDIOS ALTERNOS DE SOLUCION DE CONFLICTOS (MASC) son procedimientos que permiten un acercamiento entre las partes, dejando de verse como rivales y mejor como seres humanos que tienen la necesidad de expresar de manera directa y sincera las razones que dieron origen al conflicto, manifestando sus pretensiones. De acuerdo a la naturaleza del tercero ajeno que interviene, los MASC, pueden clasificarse en mediación, conciliación, negociación, arbitraje y justicia restaurativa, y se rigen bajo los principios de voluntariedad, confidencialidad, neutralidad, honestidad, legalidad, flexibilidad y oralidad. La reforma en materia de MEDIOS ALTERNOS DE SOLUCION DE CONFLICTOS arribo a la nación en el transcurso del año 2008 obligando a México a incorporarlos de manera constitucional y dándoles una reglamentación independiente. En materia educativa llego la exigencia a las instituciones de educación superior (IES) a implementar la carrera en a) universidades públicas, b) privadas, c) tecnológicos y d) escuelas normales para profesores; correspondiéndoles a las IES reestructurar de manera permanente los programas y planes de estudio acorde a la realidad social, así como también es obligación del estado trabajar con las universidades para generar diversos lazos de cooperación que permitan que los jóvenes cursen una licenciatura, acorde a los estándares que los empleadores requieren.ABSTRACT En el desarrollo de la presente tesis se aborda el tema de las nuevas carreras universitarias de ´´ medios alternos de solución de conflictos ´´ teniendo como objetivo principal la inclusión de la mediación como pertinencia educativa, en los planes de estudios de nivel y superior; aportando antecedentes, conceptos, clasificación y teorías doctrinarias y complementándolo con el marco jurídico en los planos internacional, nacional y estatal

Energy Decisions Within an Applied Ethics Framework: Analysis of Five Recent Controversies

Everywhere in the world, and in every period of human history, it has been common for energy decisions to be made in an ethically haphazard manner. With growing population pressure and increasing demand for energy, this approach is no longer viable. We believe that decision makers must include ethical considerations in energy decisions more routinely and systematically. To this end, we propose an applied ethics framework that accommodates principles from three classical ethical theories—virtue ethics, deontology, consequentialism, and two Native American ethics (Lakota and Navajo)—all considered from the perspectives of the impacted communities. We illustrate this framework by evaluating five recent energy decisions: the Dakota Access Pipeline, the Navajo Nation’s possible transition from coal to solar, hydraulic fracturing in Pennsylvania, uranium mining in Virginia, and the construction of the Xiaolangdi Dam in China. An applied ethics framework is preferable to existing ethical analyses because it can serve to sharpen arguments for (un)ethical decisions and action. Rather than treat ethical reasoning as a matter of opinion, we argue that applying ethical principles in a universal and standardized way adds rigor to energy sector decisions by presenting a position available for objective scrutiny. Because our framework identifies which aspects of a targeted action (if any) must adjust to improve ethical merit, it can serve as a practical tool for improving decision-making as we enter a new era of energy transitions