Cartesian tensor bases have been widely used to model spherical functions. In medical imaging, tensors of various orders can approximate the diffusivity function at each voxel of a diffusion-weighted MRI data set. This approximation produces tensor-valued datasets that contain information about the underlying local structure of the scanned tissue.…

The purpose of this paper is to study identification and estimation of causal effects in experiments with multiple sources of noncompliance. This research design arises in many applications in education when access to oversubscribed programs is partially determined by randomization. Eligible households decide whether or not to comply with the…

In this paper, the authors focus their attention on the way magnetic circuits and permanent magnets are usually treated in most textbooks and electrical engineering courses. This paper demonstrates how this important topic is too often presented simplistically. This simplistic treatment does not allow the students to develop a complete…

A set-up comprising a magnetic disc, a solenoid and a mechanical balance was used to teach first-year physics students Newton's third law with the help of a free body diagram. The image of a floating magnet immobilized by the solenoid's repulsive force should help dispel a common misconception of students as regards the first law: that stationary…

The symmetry of self-duality (Savit 1980 "Rev. Mod. Phys. 52" 453) of some models of statistical mechanics and quantum field theory is discussed for finite spin blocks of the Ising chain in a transverse magnetic field. The existence of this symmetry in a specific type of these blocks, and not in others, is manifest by the degeneracy of their…

The practical applicability of a semiconductor quantum dot with spin-orbit interaction gives an impetus to study analytical solutions to one- and two-electron quantum dots with or without a magnetic field.

Background/Context: Within the context of four locally funded research projects, the researcher was asked to disseminate the findings of her narrative inquiries not to the research community, which had previously been the case, but to the practice and philanthropic communities. This, in turn, created a representational crisis because practitioners…

Changes to Title IX allowing the growth of single-sex schools have garnered media attention promoting the benefits of separating boys and girls. Alternately, civil rights groups such as the ACLU continue to oppose any type of school segregation. Within this context, a private philanthropy, the Foundation for the Education of Young Women (FEYW) has…

As a nation, society benefits from an educated populace. At a time when economic, environmental, social, and security issues are the focus of many conversations in businesses, industries, government offices, schools, and homes, policymakers turn their attention to the further development of human capital. Educators acknowledge that they have key…

Several studies have examined parent expectations of schools in general (Gewertz, 2008; Carney-Hall, 2008; Keller, 2008; Stelmach, 2005; Boal, 2004; Lawson 2003; Wherry, 2003; Cheney, 2002; Bomotti, 1996; Epstein & Hollifield, 1996). Other studies have more specifically addressed parents' expectations of urban schools and their reasons for…

From her first encounter with stereoscopic 3D technology designed for classroom instruction, Megan Timme, principal at Hamilton Park Pacesetter Magnet School in Dallas, sensed it could be transformative. Last spring, when she began pilot-testing 3D content in her third-, fourth- and fifth-grade classrooms, Timme wasn't disappointed. Students…

The field of electrical and computer engineering has evolved significantly in the past two decades. This evolution has broadened the field of ECE, and subfields have seen deep penetration into very specialized areas. Remarkable devices and systems arising from innovative processes, exotic materials, high speed computer simulations, and complex…

President Obama said in his 2011 State of the Union address that the United States is experiencing a second "Sputnik Moment," implying that the country is challenged to keep up with its international competitors in training scientists and engineers. A recent review of academic performance rated the United States 17th in reading, 23rd in science,…

Polymers are materials with vast environmental and economic ramifications, yet are generally not discussed in secondary education science curricula. We describe a program in which college mentors develop and implement hands-on, polymer-related experiments to supplement a standard, state regents-prescribed high school chemistry course, as well as a…

In this paper we analyse a number of teaching paradoxes of classical electrodynamics, dealing with the relativistic transformation of energy and momentum for a fluid medium in an external electromagnetic field. In particular, we consider a moving parallel plate charged capacitor, where the electric attraction of its plates is balanced by the…