Missing energies at pair creation

Wilson cloud chamber measurements of the separated spectra of positrons and electrons produced by gamma quanta of 6.14 MeV differ considerably from the theoretically predicted spectra by BETHE and HEITLER, but are in good agreement with those of a modified theory of pair creation

Variables Associated with Divorce in Northwest Georgia, 2007-2016

Variables Associated with Divorce in Northwest Georgia, 2007-2016 Abstract In this paper, there is an investigation of the main variables associated with divorce in Northwest Georgia, from data collected through 191 interviews, in 2007-2016. The data showed that sixteen such variables were identified by divorced interviewees. The study showed that marriage dissatisfaction and lack of readiness for marriage are the main factors, which explain divorce. The most frequently-mentioned variables were those related to infidelity, communication, abuse, financial problems, and conflict resolution

Online Teaching in Sociology: Prospects, Successes, and Problems

Online teaching is promising to expand more in the future, as it meets student demands and provides more profit to the institutions of higher education offering it. However, it has two main challenges, represented by the physical absence of instructors and the perception that it’s easier to pass online courses than face-to-face courses. Using my ten-year experience in online teaching, I describe my best practices, offering solutions to these challenges and other problems. To engage students, I use a variety of course activities, such as chapter online tests, papers, structured discussion posts, substantive responses to classmates, as well as timely and frequent communication with students. The accusation leveled against online courses as easier to pass than face-to-face courses can be refuted by requiring two proctored unit exams, with considerable weight, as credible measures of the student learning of the course content

Comparison of Three Levels of Divorce in Whitfield County, State of Georgia, and the United States in Two Decades, 1990-2009

Comparison of Three Levels of Divorce in Whitfield County, State of Georgia, and the United States in Two Decades, 1990-2009 Abstract: In this paper, there is an investigation of the North West Georgia divorce ratios in 1990-2010 and how they are related to the same ratios in the State of Georgia and the United States as a whole. The data showed that there was a decline in divorce ratios on the three levels. However, the North West Georgia divorce ratios were still much higher than the State and the national ratios. I would like to thank the three anonymous reviewers for their valuable suggestions

Analytical calculation of the transition to complete phase synchronization in coupled oscillators

Here we present a system of coupled phase oscillators with nearest neighbors coupling, which we study for different boundary conditions. We concentrate at the transition to total synchronization. We are able to develop exact solutions for the value of the coupling parameter when the system becomes completely synchronized, for the case of periodic boundary conditions as well as for an open chain with fixed ends. We compare the results with those calculated numerically.Comment: 5 pages, 3 figure

Analytic Determination of the Critical Coupling for Oscillators in a Ring

We study a model of coupled oscillators with bidirectional first nearest neighbours coupling with periodic boundary conditions. We show that a stable phase-locked solution is decided by the oscillators at the borders between the major clusters, which merge to form a larger one of all oscillators at the stage of complete synchronization. We are able to locate these four oscillators as well as the size of major clusters in the vicinity of the stage of full synchronization which we show to depend only on the set of initial frequencies. Using the method presented here, we are able to obtain an analytic form of the critical coupling, at which the complete synchronization state occurs.Comment: 5 pages and 3 figure