On Gun Registration, the NRA, Adolf Hitler, and Nazi Gun Laws: Exploding the Gun Culture Wars (A Call to Historians)

Say the words gun registration to many Americans – especially pro-gun Americans, including the 3.5 million-plus members of the National Rifle Association ( NRA ) – and you are likely to hear about Adolf Hitler, Nazi gun laws, gun confiscation, and the Holocaust. More specifically, you are likely to hear that one of the first things that Hitler did when he seized power was to impose strict gun registration requirements that enabled him to identify gun owners and then to confiscate all guns, effectively disarming his opponents and paving the way for the genocide of the Jewish population. German firearm laws and hysteria created against Jewish firearm owners played a major role in laying the groundwork for the eradication of German Jewry in the Holocaust, writes Stephen Halbrook, a pro-gun lawyer. If the Nazi experience teaches anything, Halbrook declares, it teaches that totalitarian governments will attempt to disarm their subjects so as to extinguish any ability to resist crimes against humanity. Or, as David Kopel, research director of the Independence Institute, states more succinctly: Simply put, if not for gun control, Hitler would not have been able to murder 21 million people

From the Ne’er-Do-Well to the Criminal History Category: The Refinement of the Actuarial Model in Criminal Law

Harcourt discusses three developments in 20th century criminal law: the evolution of parole board decision-making in the early 20th century, the development of fixed sentencing guidelines in the late 20th century, and the growth of criminal profiling as a formal law enforcement tool since the 1960s. In each of these case studies, he focuses on the criminal law decision-making

[Review of] Carmelo Mesa-lago, The Economy of Socialist Cuba: A Two-Decade Appraisal

It\u27s not unusual for partisans of opposing viewpoints about Cuba to spark each other to flaming argument, while those who prefer less heat and more light can easily find adventure enough just in following the course of the Western Hemisphere\u27s most important social experiment since the Mexican Revolution. Shouldn\u27t a book about twenty years of post-revolutionary Cuba be exciting, especially when it comes to us from Carmelo Mesa-Lago, Cuban native, an early supporter of the revolution and also an early emigre to the United States, and now, as Professor of Economics at the University of Pittsburgh, one of only a handful of distinguished students of Cuba in this country? His book is a product of a good deal of effort over a long period of time. It is detailed, precise, balanced, and informative. It is easily understood, so that non-experts can profit from reading it even though its wealth of hard-to-get data makes it an indispensable reference work for professional Latin Americanists. It is all this, but it is not exciting

A New Genus and Species of Isotomidae (Collembola), and a Redescription of \u3ci\u3eCryptopygus Exilus\u3c/i\u3e (Gisin) N. Comb

A new genus and species of Collembola in the family lsotomidae are described from Michigan: Micranurophorus musci n. g., n. sp. A redescription of Cryptopygus exilis (Gisin) (= Isotomina exilis Gisin) is also given, based on specimens from Michigan. The new genus is characterized by the lack of a furcula and by abdominal chaetotaxy similar to Isotomodes. It is related to Pseudanurophorus

A detector of small harmonic displacements based on two coupled microwave cavities

The design and test of a detector of small harmonic displacements is presented. The detector is based on the principle of the parametric conversion of power between the resonant modes of two superconducting coupled microwave cavities. The work is based on the original ideas of Bernard, Pegoraro, Picasso and Radicati, who, in 1978, suggested that superconducting coupled cavities could be used as sensitive detectors of gravitational waves, and on the work of Reece, Reiner and Melissinos, who, {in 1984}, built a detector of this kind. They showed that an harmonic modulation of the cavity length l produced an energy transfer between two modes of the cavity, provided that the frequency of the modulation was equal to the frequency difference of the two modes. They achieved a sensitivity to fractional deformations of dl/l~10^{-17} Hz^{-1/2}. We repeated the Reece, Reiner and Melissinos experiment, and with an improved experimental configuration and better cavity quality, increased the sensitivity to dl/l~10^{-20} Hz^{-1/2}. In this paper the basic principles of the device are discussed and the experimental technique is explained in detail. Possible future developments, aiming at gravitational waves detection, are also outlined.Comment: 28 pages, 12 eps figures, ReVteX. \tightenlines command added to reduce number of pages. The following article has been accepted by Review of Scientific Instruments. After it is published, it will be found at http://link.aip.org/link/?rs

Component model reduction via the projection and assembly method

The problem of acquiring a simple but sufficiently accurate model of a dynamic system is made more difficult when the dynamic system of interest is a multibody system comprised of several components. A low order system model may be created by reducing the order of the component models and making use of various available multibody dynamics programs to assemble them into a system model. The difficulty is in choosing the reduced order component models to meet system level requirements. The projection and assembly method, proposed originally by Eke, solves this difficulty by forming the full order system model, performing model reduction at the the system level using system level requirements, and then projecting the desired modes onto the components for component level model reduction. The projection and assembly method is analyzed to show the conditions under which the desired modes are captured exactly; to the numerical precision of the algorithm

An attempt to obtain Bi_{4}Ti_{3}O_{12}-PVC textured ceramics-polymer composites

Bi_{4}Ti_{3}O_{12}-PVC composites were fabricated. Ceramics powders of bismuth titanate were prepared by the sol-gel method using bismuth nitrate pentahydrate Bi(NO_{3})_{3} \cdot 5H_{2}O and tetrabutyl titanate Ti(CH_{3}(CH_{2})_{3}O)_{4} as precursors. The Bi_{4}Ti_{3}O_{12}-PVC composites were fabricated from ceramics powders and polymer powders by hot-pressing method.Comment: 4 pages, 4 figure

Interface Problems for Dispersive equations

The interface problem for the linear Schr\"odinger equation in one-dimensional piecewise homogeneous domains is examined by providing an explicit solution in each domain. The location of the interfaces is known and the continuity of the wave function and a jump in their derivative at the interface are the only conditions imposed. The problem of two semi-infinite domains and that of two finite-sized domains are examined in detail. The problem and the method considered here extend that of an earlier paper by Deconinck, Pelloni and Sheils (2014). The dispersive nature of the problem presents additional difficulties that are addressed here.Comment: 18 pages, 6 figures. arXiv admin note: text overlap with arXiv:1402.3007, Studies in Applied Mathematics 201

Pion-Nucleon Phase Shifts in Heavy Baryon Chiral Perturbation Theory

We calculate the phase shifts in the pion-nucleon scattering using the heavy baryon formalism. We consider phase shifts for the pion energy range of 140 to $200$ MeV. We employ two different methods for calculating the phase shifts - the first using the full third order calculation of the pion-nucleon scattering amplitude and the second by including the resonances $\Delta$ and $N^*$ as explicit degrees of freedom in the Lagrangian. We compare the results of the two methods with phase shifts extracted from fits to the pion-nucleon scattering data. We find good to fair agreement between the calculations and the phase shifts from scattering data.Comment: 14 pages, Latex, 6figures. Revised version to appear in Phys.Rev.