Two-Loop Ultrasoft Running of the O(v^2) QCD Quark Potentials

The two-loop ultrasoft contributions to the next-to-leading logarithmic (NLL) running of the QCD potentials at order v^2 are determined. The results represent an important step towards the next-to-next-to-leading logarithmic (NNLL) description of heavy quark pair production and annihilation close to threshold.Comment: 13 pages, 3 figures; typos corrected, reference added, information on cross checks added on page 7; acknowledgments adde

Sexual Assault Study: Overview

Poster originally presented to the Anchorage Police Department and the 2004 Alaska Summit on Violence Against Women.Anchorage Community Indicators is a public education project of the Justice Center aimed at providing information about various aspects of the Anchorage municipality through maps and tables. This issue introduces Series 2, "Sexual Assault Study," which describes the spatial patterning and geographical concentration of sexual assaults reported to the Anchorage Police Department in 2000–2001.This research was supported by Grant No. 2000-RH-CX-K039 awarded by the Bureau of Justice Statistics and by a UAA Faculty Development Grant to the first author.Rates of Forcible Rape in U.S., Alaska, and Anchorage, 1982–2001 / Demographic Characteristics of Suspects / Incident Locations (map) / Incident Locations for Native Victims (map) / Incident Locations for White Victims (map) / Victim-Suspect Relationship / Drug and Alcohol Use by Victim and Suspect / Demographic Characteristics of Victims (race; age) / Assault Locations / Incident Locations and Bar Locations (map) / Day of Assault / Hours Between Assault and Reporting To Polic

Sexual Assault Study: Differences by Community Council

Poster originally presented to the Anchorage Police Department and the 2004 Alaska Summit on Violence Against Women.This issue of Anchorage Community Indicators Series 2, "Sexual Assault Study," describes the spatial patterning and geographical concentration of sexual assaults reported to the Anchorage Police Department in 2000–2001 by the five community councils with the highest incidence of sexual assauults reported to police during the study period: Downtown, Fairview, Mountain View, Northeast, and Spenard. Comparison date is presented for these five community councils on victim and suspect characteristics including age, race, and alcohol use; assault characteristics including day of week and location of assault; and victim-suspect relationship.This research was supported by Grant No. 2000-RH-CX-K039 awarded by the Bureau of Justice Statistics and by a UAA Faculty Development Grant to the first author.Downtown (map) / Fairview (map) / Mountain View (map) / Northeast (map) / Spenard (map) / Victim characteristics (age, race, alcohol use) / Assault characteristics (weekday, location) / Victim-suspect relationship (stranger v. non-stranger; type of non-stranger relationship) / Suspect characteristics (age, race, alcohol use

Researcher-Practitioner Partnerships to Impact Sexual Assault and Domestic Violence Policy

Points of view in this document are those of the authors and do not necessarily represent the official position or policies of the U.S. Department of Justice.The Alaska Department of Public Safety and the UAA Justice Center conducted numerous research projects and published numerous articles on domestic violence, sexual assault, child sexual abuse, and stalking. These research projects were used to develop new multidisciplinary and multifaceted initiatives to combat violence against women in Alaska. This poster describes our researcher-practitioner partnership and its impact on policy and practice.This project was supported by Grant No. 2005-WG-BX-0011 awarded by the National Institute of Justice, Office of Justice Programs, U.S. Department of Justice.Abstract / Building Partenrships / Context / Sample Results / Importance of Data & Research / Using Data to Develop and Define Intitiatives / Dissemination / From Research to Policy and Practice / Enhancing Partnerships: Future Direction

The MSR Mass and the O(ΛQCD){\cal O}(\Lambda_{\rm QCD}) Renormalon Sum Rule

We provide a detailed description and analysis of a low-scale short-distance mass scheme, called the MSR mass, that is useful for high-precision top quark mass determinations, but can be applied for any heavy quark $Q$. In contrast to earlier low-scale short-distance mass schemes, the MSR scheme has a direct connection to the well known $\overline{\rm MS}$ mass commonly used for high-energy applications, and is determined by heavy quark on-shell self-energy Feynman diagrams. Indeed, the MSR mass scheme can be viewed as the simplest extension of the $\overline{\rm MS}$ mass concept to renormalization scales $\ll m_Q$. The MSR mass depends on a scale $R$ that can be chosen freely, and its renormalization group evolution has a linear dependence on $R$, which is known as R-evolution. Using R-evolution for the MSR mass we provide details of the derivation of an analytic expression for the normalization of the ${\cal O}(\Lambda_{\rm QCD})$ renormalon asymptotic behavior of the pole mass in perturbation theory. This is referred to as the ${\cal O}(\Lambda_{\rm QCD})$ renormalon sum rule, and can be applied to any perturbative series. The relations of the MSR mass scheme to other low-scale short-distance masses are analyzed as well.Comment: 42 pages + appendices, 6 figures, v2: Refs and Appendix B added, Fig.3 changed from nl=4 to nl=5, v3: journal versio

Two-Loop Massive Quark Jet Functions in SCET

We calculate the $\mathcal O(\alpha_s^2)$ corrections to the primary massive quark jet functions in Soft-Collinear Effective Theory (SCET). They are an important ingredient in factorized predictions for inclusive jet mass cross sections initiated by massive quarks emerging from a hard interaction with smooth quark mass dependence. Due to the effects coming from the secondary production of massive quark-antiquark pairs there are two options to define the SCET jet function, which we call universal and mass mode jet functions. They are related to whether or not a soft mass mode (zero) bin subtraction is applied for the secondary massive quark contributions and differ in particular concerning the infrared behavior for vanishing quark mass. We advocate that a useful alternative to the common zero-bin subtraction concept is to define the SCET jet functions through subtractions related to collinear-soft matrix elements. This avoids the need to impose additional power counting arguments as required for zero-bin subtractions. We demonstrate how the two SCET jet function definitions may be used in the context of two recently developed factorization approaches to treat secondary massive quark effects. We clarify the relation between these approaches and in which way they are equivalent. Our two-loop calculation involves interesting technical subtleties related to spurious rapidity divergences and infrared regularization in the presence of massive quarks.Comment: 51 pages + appendices, 8 figures, v2: journal versio

Corporate Risk-Taking and the Decline of Personal Blame

The ability to maintain state awareness in the face of unexpected and unmodeled errors and threats is a defining feature of a resilient control system. Therefore, in this paper, we study the problem of distributed fault detection and isolation (FDI) in large networked systems with uncertain system models. The linear networked system is composed of interconnected subsystems and may be represented as a graph. The subsystems are represented by nodes, while the edges correspond to the interconnections between subsystems. Considering faults that may occur on the interconnections and subsystems, as our first contribution, we propose a distributed scheme to jointly detect and isolate faults occurring in nodes and edges of the system. As our second contribution, we analyze the behavior of the proposed scheme under model uncertainties caused by the addition or removal of edges. Additionally, we propose a novel distributed FDI scheme based on local models and measurements that is resilient to changes outside of the local subsystem and achieves FDI. Our third contribution addresses the complexity reduction of the distributed FDI method, by characterizing the minimum amount of model information and measurements needed to achieve FDI and by reducing the number of monitoring nodes. The proposed methods can be fused to design a scalable and resilient distributed FDI architecture that achieves local FDI despite unknown changes outside the local subsystem. The proposed approach is illustrated by numerical experiments on the IEEE 118-bus power network benchmark.QC 20141114</p