The perception of rising insecurity has plagued Paraguay over the past decade as the country has continued its transition from authoritarian to democratic rule. At the same time, reforms of the penal code and the code of criminal procedure have been implemented, leading many to attribute the rising sense of insecurity to the new, rights-based approach to criminal justice. In Security in Paraguay: Analysis and Responses in Comparative Perspective, the International Human Rights Clinic at Harvard Law School assesses the disparity between the sensation of insecurity and actual levels of urban crime. The book further analyzes the impact of political actors and the media in heightening public fear of crime. Security in Paraguay draws upon comparative case studies and the latest research on criminal justice policy in Latin America to situate Paraguay’s experience in a broader regional context and to offer recommendations to guide future policymaking.

This volume collects selected papers from the twenty-third New Ways of Analyzing Variation (NWAV23) conference held at Stanford University. It is a collection of innovative papers on the newest developments in research on variation. The range of topics covered in this collection include: phonological variation, morphosyntactic variation, register and style, discourse, codeswitching, and language change. A foreword by John Rickford ties the collection together. This volume will be of interest to sociolinguists, sociologists, and any scholar interested in comparative linguistics.

For most of our existence, humans have manipulated stone into tools that are essential for survival. Generally resistant to degradation, stone tools comprise a large portion of the material culture found at archaeological sites worldwide. Recovery of stone tools during archaeological excavation indicates the location where they were discarded, often tied to where they were used. “Sourcing” refers to attempts to determine the origin of the raw materials used to produce these tools. Knowing the beginning and end points of a tool’s use-life, as well as the likely paths it took between those two locations, can offer insight into trade and procurement patterns. The scholars gathered in this volume employ a variety of unique approaches to real-life contexts in multiple geographic regions. These studies illustrate the numerous, robust options available to archaeologists and researchers today, as well as the problems that must be faced and resolved.

Part 1 of the book explores technological approaches to sourcing in conjunction with innovative survey strategies. The chapters describe a particular method while often offering suggestions for improving the chemical analysis. Part 2 focuses on region-specific and methodological sourcing applications. In a concluding review, Michael D. Glascock critiques each of the chapters and presents his views, developed across 40 years of work in the field, on sourcing raw materials. Broadly, these contributions demonstrate how knowledge of lithic sources, geologic processes, the nature of variation, and regional availability can provide a more thorough understanding of past peoples.

This book gives a practical, applications-oriented account of the latest techniques for estimating and analyzing large, nonlinear macroeconomic models. Ray Fair demonstrates the application of these techniques in a detailed presentation of several actual models, including his United States model, his multicountry model, Sargent's classical macroeconomic model, autoregressive and vector autoregressive models, and a small (twelve equation) linear structural model. He devotes a good deal of attention to the difficult and often neglected problem of moving from theoretical to econometric models. In addition, he provides an extensive discussion of optimal control techniques and methods for estimating and analyzing rational expectations models.

A computer program that handles all the techniques in the book is available from the author, making it possible to use the techniques with little additional programming. The book presents the logic of this program. A smaller program for personal microcomputers for analysis of Fair's United States model is available from Urban Systems Research & Engineering, Inc. Anyone wanting to learn how to use large macroeconomic models, including researchers, graduate students, economic forecasters, and people in business and government both in the United States and abroad, will find this an essential guidebook.

This book demonstrates the usefulness of the switching function in analyzing powers electronic circuits in the steady state. A procedure is suggested for the effective application of this effective application of this method for the analysis of all types of power electronic circuits. The Kirchoff's Laws and the Superposition theorem are applied by introducing the appropriate switching functions in order to derive Unified Expressions of voltage and current in switched circuits valid at all times. The exact expressions of the current in each semiconductor device in the circuit enables the circuit designer to collect all the relevant data to set the ratings of the device such as rms, average and peak values of voltage and current. The order of the voltage and current harmonics at any point in the circuit are derived with simple arithmetic. Compact expressions are derived for Sinusoidal PWM signals based on the switching function. The order, magnitude and phase of each component are derived directly from the expression with simple arithmetic. The educator has a simple way to present to his students the mechanism of operation of complex switched circuits where all the statements regarding their operation are actually presented in the model of the circuit.

Reluctance motors induce non-permanent magnetic poles on the ferromagnetic rotor; the rotor does not have any windings and torque is generated through magnetic reluctance. Synchronous reluctance motors (SyRMs) have an equal number of stator and rotor poles. Reluctance motors can deliver high power density at low cost, so they are finding increasing application in the transport sector. Disadvantages include high torque ripple and the complexity of designing and controlling them. Advances in theory, computer design, and control electronics can overcome these issues.