Development of high thermal conductivity polymeric materials for spacecraft use Final report, 1 Jul. 1966 - 31 May 1969

High thermal conductivity polymeric materials for spacecraft applications using phenyl compound

Variation in Environmental Risk Perceptions and Information Sources among Three Communities in El Paso

The authors report the results of a pilot study of environmental risk and sources of environmental information in three socio-economically and culturally distinct communities in Texas

Thermally conducting electron transfer polymers

New polymeric material exhibits excellent physical shock protection, high electrical resistance, and thermal conductivity. It is especially useful for electronic circuitry, such as subminiaturization of components and modular construction of circuits

Improved thermally conducting electron transfer polymers

Development of polymers with improved heat transfer coefficients for use in encapsulating electronic modules is discussed. Chemical reactions for synthesizing the polymers are described and thermodynamic and physical properties are analyzed

Human-Canine Relationships: Dog Behavior and Owner Perceptions

Abstract Owning a dog has many physiological and psychological advantages; however, dog behavior can manifest itself in a variety of negative ways, including aggression. Research suggested that genetics and environment might play a role in aggression. It was demonstrated that owners can affect their dogs’ behaviors. Owners can unwittingly condition or encourage their dogs to misbehave, whether through their inaccurate perceptions or misguided actions towards the dogs. Dog behavior specialists view owner education as the key to solving the communication barrier between human and canine. The present study’s purpose was to assess if this view was possible. The research question asked if owners who perceived to know about their dogs’ breed characteristics would have better behaved dogs than those who did not know. A survey scrutinized some owner factors, their perceptions of their dogs, and whether or not they thought a behavior therapist would be beneficial. The sample of rural participants generally believed their pets to be well behaved, and were not interested in a behavior therapist. However, there was a significant correlation between dog misbehavior and thinking that a behaviorist would be beneficial. There appeared to be no relationship between perceived knowledge and the amount of misbehavior

General Depolarized Pure States: Identification and Properties

The Schmidt decomposition is an important tool in the study of quantum systems especially for the quantification of the entanglement of pure states. However, the Schmidt decomposition is only unique for bipartite pure states, and some multipartite pure states. Here a generalized Schmidt decomposition is given for states which are equivalent to depolarized pure states. Experimental methods for the identification of this class of mixed states are provided and some examples are discussed which show the utility of this description. A particularly interesting example provides, for the first time, an interpretation of the number of negative eigenvalues of the density matrix.Comment: 1 figure, 9 pages, revtex4, slightly rewritten, reorganized, new sectio

Geometry of mixed states and degeneracy structure of geometric phases for multi-level quantum systems. A unitary group approach

We analyze the geometric aspects of unitary evolution of general states for a multilevel quantum system by exploiting the structure of coadjoint orbits in the unitary group Lie algebra. Using the same method in the case of SU(3) we study the effect of degeneracies on geometric phases for three-level systems. This is shown to lead to a highly nontrivial generalization of the result for two-level systems in which degeneracy results in a "monopole" structure in parameter space. The rich structures that arise are related to the geometry of adjoint orbits in SU(3). The limiting case of a two-level degeneracy in a three-level system is shown to lead to the known monopole structure.Comment: Latex, 27 p

An lnvestigation of Princapals\u27 Use of Data in Data-Driven Decision-Making and the Impact on Student Achievement

The passage and implementation of the No Child Left Behind Act (NCLB, 2001) ushered in a new era of educational accountability and school improvement. Schools are held accountable to meet adequate yearly progress that requires educators to closely monitor student performance on high-stake assessments. Further, NCLB significantly increases the pressure on states, districts and schools to collect, analyze and report data. Accountability demands are increasingly forcing school leaders to explore student-level data and to complete more sophisticated analyses. Data-driven decision-making (DDDM) has become an emerging field of practice for school leadership (Streifer, 2002) and a central focus of education policy and practice (Mandinach, Honey, & Light, 2006). Nationwide standards-based control and outcome-based funding have brought DDDM to the top of every principal\u27s agenda (Leithwood, Aitken, & Jantzi, 2001)