Character Degrees of Normally Monomial Maximal Class 5-Groups

This paper will impose limits on the possible sets of irreducible character degrees of a normally monomial 5-group of maximal class

A statistical model of carbon/carbon composite failure

A failure model which considers the stochastic nature of the damage accumulation process is essential to assess reliability and to accurately scale the results from standard test specimens to composite structures. A superior filamentary composite for high temperature applications is composed of carbon fibers in a carbon matrix. Carbon-carbon composites are the strongest known material at very high temperatures. Since there appears to be a significant randomness in C-C material strength which cannot be controlled or detected with current technology, a better model of the material failure based upon statistical principles should be used. Simple applications of the model based upon the limited data provide encouraging results that indicate that better design of test specimens would provide a substantially higher prediction for the design strength of C-C composites. An A-basis strength for the C-C tensile rings from a first stage D-5 billets was estimated. A statistical failure model was developed for these rings which indicates that this strength may be very conservative for larger C-C parts. The analysis may be improved by use of a heterogeneous/noncontinuum finite element approach on the minimechanical level

The Paradoxes of National Self-Determination

Some have argued that the right of national self-determination gives every national group the power to decide for itself whether to remain part of an existing state or to secede unilaterally and form its own state. Such a theory underpins the claim that Quebec is entitled to decide on its own whether or not to leave Canada. This paper examines the main philosophical arguments for the theory and finds them one-dimensional and inadequate; they fail to take account of the full range of complex issues arising in actual cases of proposed secession. If the right of national self-determination is understood as involving a right of unilateral secession, it cannot be attributed to national groups across the board. It arises only in specific historical circumstances, usually involving oppression or other forms of grave injustice

The Tragedy and Promise of Self-Determination

The principle of self-determination, like Janus, has two faces: negative and positive. Often understood as enabling the fracture of states into national components, the principle is better seen as facilitating the creation of multinational frameworks that foster toleration and human rights

The World War II Patriotic Mother

The archetypal good mother and the archetypal patriotic mother are important symbols in American culture. Both are rooted in maternal work but are separated by two conflicting assumptions. The good mother nurtures her children and protects them from harm, while the patriotic wartime mother remains silent when the government sends her child directly into harm\u27s way. This study explores how the World War II press positioned mothers of soldiers to sacrifice their children in support of the nation\u27s war effort. The findings point to the importance of understanding the role of archetypes in news narratives

Three Concepts of Law: The Ambiguous Legacy of H.L.A. Hart

The law presents itself as a body of meaning, open to discovery, interpretation, application, criticism, development and change. But what sort of meaning does the law possess? Legal theory provides three sorts of answers. The first portrays the law as a mode of communication through which law-makers convey certain standards or norms to the larger community. The law's meaning is that imparted by its authors. On this view, law is a vehicle, conveying a message from a speaker to an intended audience. The second theory portrays the law as a mode of interpretation, whereby judges, officials, and ordinary citizens make decisions about how the law applies in various practical contexts. The law's meaning is that furnished by its interpreters. According to this theory, law is a receptacle into which decision-makers pour meaning. The third viewpoint argues that these theories, while not altogether wrong, are incomplete because they downplay or ignore the autonomous meaning that the law itself possesses. This theory suggests that the law is basically a mode of participation, whereby legislators, judges, officials, and ordinary people attune themselves to an autonomous field of legal meaning. The law's meaning is grounded in a body of social practice which is independent of both the law's authors and its interpreters and which is infused with basic values and principles that transcend the practice. On this view, law is the emblem of meaning that lies beyond it. Elements of all three theories are present in H.L.A. Hart's influential work, The Concept of Law, which attempts to fuse them into a single, all-encompassing theory. Nevertheless, as we will argue here, the attempt is not successful. Any true reconciliation of the communication and interpretation theories can only take place within the framework of a fully developed participation theory. In the early stages of his work, Hart lays the foundation for such a theory. However, his failure to elaborate it in a thoroughgoing way renders the work incomplete and ultimately unbalanced. As we will see, there is something to be learned from this failure

Techniques for the observation of micrometeorite craters in metal substrates utilizing electron micrographic replica methods

Thin film replica technique for obtaining high quality electron micrographs of craters in metal substrates formed by microscopic hypervelocity particle impac

Ripples of Learning: A Middle School Teacher's Application of Content and Pedagogy Learned in the ESSEA Online Earth System Science Course

This article provides an overview of an Earth System Science Education Alliance (ESSEA) online professional development course for middle school classroom teachers. The course uses real-world events to develop content understandings of Earth system science, and it models best practices for age appropriate pedagogy. Topics include a brief description of the course itself and of efforts to evaluate its efficacy. The article is also available in printable form, and a video clip is included. Educational levels: Graduate or professional

Ionization probability of iron particles at meteoritic velocities

Ion production for ablation of micron size iron particles moving at supersonic speed in air and argo