Nondegeneracy and Stability of Antiperiodic Bound States for Fractional Nonlinear Schr\"odinger Equations

We consider the existence and stability of real-valued, spatially antiperiodic standing wave solutions to a family of nonlinear Schr\"odinger equations with fractional dispersion and power-law nonlinearity. As a key technical result, we demonstrate that the associated linearized operator is nondegenerate when restricted to antiperiodic perturbations, i.e. that its kernel is generated by the translational and gauge symmetries of the governing evolution equation. In the process, we provide a characterization of the antiperiodic ground state eigenfunctions for linear fractional Schr\"odinger operators on $\mathbb{R}$ with real-valued, periodic potentials as well as a Sturm-Liouville type oscillation theory for the higher antiperiodic eigenfunctions.Comment: 46 pages, 2 figure

WATER ECONOMICS PUBLICATIONS 1961-2003

This technical bulletin is a compilation of water-related publications by the faculty of the Department since 1961. Topics range from the economics of irrigation to the use of windmills and from water supply policy to water quality in feedyards and playa lakes. Most of the publications address regional issues with widespread implications, but some articles address water issues in other regions of the United States and the world. This listing illustrates the depth and breadth of the work done on water issues within the Department.Resource /Energy Economics and Policy,

International Cooperation on Trade and Labor Issues

The relationship between the labor market and international trade is a broad and complex subject that has been the focus of significant attention in recent years. Discussion and analysis in this area has covered a number of discrete issues, including the effect of shifting trade patterns on employment levels and earnings in domestic markets, the impact of wage levels and labor legislation on the location of production facilities, and the positive and negative aspects of the cross-border movement of workers, among others. The continuing importance of labor issues within the larger trade debate is highlighted by the inclusion of measures relating to labor standards and/or the cross-border movement of workers in recent bilateral and multilateral trade agreements such as the North American Free Trade Agreement (NAFTA), the General Agreement on Trade in Services (GATS), and the U.S.–Oman Free Trade Agreement. This paper aims to provide background for future work on trade-related labor issues by describing how labor issues such as internationally recognized labor standards and the cross-border movement of workers have been addressed by international organizations, as well as in U.S. trade legislation and recent trade agreements

Childhood Obesity and Absenteeism: Implications for School Leaders

This study explored educational leaders’ perspectives on childhood obesity and its effect on absenteeism and school performance and possible measures taken in the future to combat this. This study demonstrated the importance of leaders’ perspectives on childhood obesity and absenteeism in elementary classrooms, the nutrition education that is given to students and their families, and possible measures that should be taken in the future to combat childhood obesity in the nation’s elementary schools

Emotional, cognitive, and postural adaptations to repeated postural threat exposure

This thesis investigated initial threat-induced changes in emotional, cognitive, and postural control measures and adaptation of these measures to repeated threat exposure in healthy young and older adults. Twenty-seven young and twenty-seven older adults stood on a platform under no threat and threat conditions. Postural threat was manipulated by altering the expectation of a temporally and directionally unpredictable mediolateral support surface translation during quiet standing. Regardless of age, participants were more anxious, reported broad changes in attention focus, and increased centre of pressure (COP) amplitude and frequency with first threat exposure. With early threat exposure, participants were less anxious and increased COP frequency. With repeated threat exposure, participants were less anxious, reported reductions in threat-induced changes in attention focus, and decreased high frequency COP displacements. These results suggest young and older adults demonstrate similar patterns of emotional, cognitive, and postural adaptations to initial and repeated threat exposure

Towards an Etiology of Adjunct Islands

This paper examines the connection between certain island phenomena for long distance movement, and matching island conditions on focus projection. Based on a description of focus projection that Lisa Selkirk and Michael Rochemont formulate, I take the basic pattern to be that pitch accent on a word may license focus marking on a phrase only if the pitch accented word is not separated from the focus marked phrase by a phrase in Specifier position or in adjunct position. Long distance movement operations are similarly incapable of moving a phrase out of a phrase in Specifier or adjunct position. Using Chomsky's notion of "phase," I argue that this is because Specifiers and adjuncts are phonological phases, and make proposals about what movement and focus projection is that thereby derives this effect. I then propose an interpretation of Chomsky's Bare Phrase Structure that derives the phaseness of these phrases