Technicolor at the Tevatron

We propose that the 3.2 sigma excess at ~150 GeV in the dijet mass spectrum of W + jets reported by CDF is the technipion $\pi_T$ of low-scale technicolor. Its relatively large cross section is due to production of a narrow $Wjj$ resonance, the technirho, which decays to W + $\pi_T$. We discuss ways to enhance and strengthen the technicolor hypothesis and suggest companion searches at the Tevatron and LHC.Comment: 5 pages, 6 figures. Note added regarding Z(l+l-)+jj signals at the Tevatron and LH

The Bohl spectrum for nonautonomous differential equations

We develop the Bohl spectrum for nonautonomous linear differential equation on a half line, which is a spectral concept that lies between the Lyapunov and the Sacker--Sell spectrum. We prove that the Bohl spectrum is given by the union of finitely many intervals, and we show by means of an explicit example that the Bohl spectrum does not coincide with the Sacker--Sell spectrum in general. We demonstrate for this example that any higher-order nonlinear perturbation is exponentially stable, although this not evident from the Sacker--Sell spectrum. We also analyze in detail situations in which the Bohl spectrum is identical to the Sacker-Sell spectrum

Characterizing the Conductivity and Enhancing the Piezoresistivity of Carbon Nanotube-Polymeric Thin Films.

The concept of lightweight design is widely employed for designing and constructing aerospace structures that can sustain extreme loads while also being fuel-efficient. Popular lightweight materials such as aluminum alloy and fiber-reinforced polymers (FRPs) possess outstanding mechanical properties, but their structural integrity requires constant assessment to ensure structural safety. Next-generation structural health monitoring systems for aerospace structures should be lightweight and integrated with the structure itself. In this study, a multi-walled carbon nanotube (MWCNT)-based polymer paint was developed to detect distributed damage in lightweight structures. The thin film's electromechanical properties were characterized via cyclic loading tests. Moreover, the thin film's bulk conductivity was characterized by finite element modeling

Rethinking Disability in the Private Sector: Report from the Panel on Labour Market Opportunities for Persons with Disabilities

In July 2012, the Government of Canada appointed a panel to consult with private sector employers, as well as other organizations and individuals, on the labour market participation of people with disabilities. The panel members were asked to identify successes and best practices in the employment of people with disabilities, as well as the barriers faced by employers, and to report on their findings. In-person and telephone consultations were conducted with almost 70 employers, and feedback was received from approximately 130 online submissions. Responses came from organizations of all sizes across the country and in a broad range of industry sectors. Findings were shared anonymously with a number of national non-profit organizations and business associations to determine if they resonated with other stakeholders. While the consultations were the main focus of the panel’s efforts, research was also conducted into the business case associated with hiring people with disabilities in Canada and other jurisdictions. This report is directed at Canadian private sector employers, and offers the following findings: Many companies are doing great things, but more education and training are needed (see “Employers speak”). While most of the companies we heard from showed a genuine desire to hire people with disabilities, education and training are required to overcome barriers, dispel myths and put theory into practice. As the examples of forward-thinking Canadian companies and their best practices testify, there is significant experience available on which to build. Hiring people with disabilities is good for business. (see “Understanding the business case”). We heard this from senior and experienced business leaders who recognize the value of an inclusive work environment. Although mainly intuitive, their beliefs are supported by the performance of corporate diversity leaders on the capital markets, as well as data on employee retention and productivity. It is noteworthy that in 57 percent of cases, no workplace accommodation is required for people with disabilities. In the 37 percent of cases reporting a one-time cost to accommodate an employee with a disability, the average amount spent is $500. The keys to success are leadership and effective community partnerships (see “Making it work for you”). To increase employment among people with disabilities and access the related benefits, tone from the top and the actions of leaders are imperative. Also critical is identifying community partners who fully understand the business’s talent needs and are committed to customer service. To help organizations begin the process of engaging and employing talented people with disabilities, this section also includes a list of initiatives called “Getting started.

Panel summary of recommendations

The following Space Station internal contamination topics were addressed: past flight experience (Skylab and Spacelab missions); present flight activities (Spacelabs and Soviet Space Station Mir); future activities (materials science and life science experiments); Space Station capabilities (PPMS, FMS, ECLSS, and U.S. Laboratory overview); manned systems/crew safety; internal contamination detection; contamination control - stowage and handling; and contamination control - waste gas processing. Space Station design assumptions are discussed. Issues and concerns are discussed as they relate to (1) policy and management, (2) subsystem design, (3) experiment design, and (4) internal contamination detection and control. The recommendations generated are summarized

A Time Series Analysis of Representative Agent Models of Consumption andLeisure Choice Under Uncertainty

This paper investigates empirically a model of aggregate consumption and leisure decisions in which goods and leisure provide services over time. The implied time non-separability of preferences introduces an endogenous source of dynamics which affects both the co-movements in aggregate compensation and hours worked and the cross-relations between prices and quantities. These cross-relations are examined empirically using post-war monthly U.S. data on quantities, real wages and the real return on the one-month Treasury bill. We find substantial evidence against the overidentifying restrictions. The test results suggest that the orthogonality conditions associated with the representative consumer's intratemporal Euler equation underlie the failure of the model. Additionally, the estimated values of key parameters differ significantly from the values assumed in several studies of real business models. Several possible reasons for these discrepancies are discussed.

The Effect of Shareholder Proposals on Executive Compensation

During the last decade, the stratospheric increases in Chief Executive Officer (CEO) pay levels have made executive compensation a popular target for shareholder activism, particularly when high pay is accompanied by poor corporate performance. Outraged investors have made their views know to corporate boards of directors using shareholder proposals, binding bylaw amendments, Just Vote No campaigns, and other activist efforts. As institutional and other shareholders have attempted to monitor board decisions, the question remains: Have their efforts been successful in influencing executive compensation

Customizing Employment Arbitration

According to the dispute resolution literature, one advantage of arbitration over litigation is that arbitration enables the parties to customize their dispute resolution procedures. For example, parties can choose the qualifications of the arbitrator(s), the governing procedural rules, the limitation period, recoverable damages, rules for discovery and the presentation of evidence and witnesses, and the specificity of required arbitrator findings. While other scholars have questioned whether parties to arbitration agreements frequently take advantage of this customization, there is little solid empirical information about the topic. In this article, we study the arbitration clauses found in a random sample of 910 CEO employment contracts entered into during the time period 1995 to 2005 to determine how much customization actually takes place. We find only a small number of instances where fine-grained customization has occurred. Parties pay very little attention to customizing arbitral proceedings in these employment contracts, although there is a significant increase in the practice over time. We find this result surprising given that CEO contracts are heavily negotiated documents. Unexpectedly, we find that about half of the arbitration clauses in our contracts carve out a subset of potential claims or types of relief by reserving a right for the parties to seek such relief or file such claims in court. This phenomenon of customizing the circumstances under which parties will use arbitration has received almost no attention in the academic literature to date. In particular, we find that the types of claims carved out for court resolution are those involving firm efforts to protect the value of its information, reputation, and innovation. CEOs and companies in the information technology business are not significantly more likely to carve out such claims, and the use of these carveouts is increasing over time, suggesting that such carveouts are increasingly valuable to all firms. Unfortunately, California court regulation of arbitration clauses in employment contracts has significantly dampened the use of carveouts in contracts between CEO’s and their firms located in California. Our data suggests that court efforts to protect employees by scrutinizing the specific carveouts we observe is both unnecessary and destructive

Race, Residential Segregation, and the Death of Democracy: Education and Myth of Postracialism

Since the 1930s, federal housing policies and individual practices increased the spatial separation of whites and blacks. Practices such as redlining, restrictive covenants, and discrimination in the rental and sale of housing not only led to residential segregation by race but also continue to shape Whiteness and frame narratives about what constitutes Blackness. Despite the judicial and legislative victories of the civil rights movement, including the Brown v. Board of Education of Topeka, Kansas decision, the Civil Rights Act of 1964, the Voting Rights Act of 1965, and the Fair Housing Act of 1968, residential segregation persists and in many cases has grown. Claims of a postracial society notwithstanding, the continued segregation of Blacks and Whites exacerbates racial wealth inequality, racial achievement gaps, and racial profiling. Using White racial frame and critical race theory, we explain the persistence of residential segregation amid growing ethnic diversity in the United States. We also demonstrate why current efforts to narrow racial gaps in wealth, education, and the criminal justice system have failed. Finally, we discuss several important tenets that must guide efforts to curb the epidemic of death by residential segregation in America