Has the long-run velocity of M2 shifted? Evidence from the P* model

An examination of one of the P-Star model's primary assumptions: the constancy of M2's long-run velocity, or V-Star. Using actual data through the end of 1992, the authors find that simulations of the model under a variety of hypotheses regarding changes in V-Star provide little support for a dramatic shift in that measure.Inflation (Finance) ; Money supply ; Velocity of money

Integrating business and personal income taxes

An examination of the problems surrounding the current corporate tax system, including a detailed look at several reform proposals from the Treasury Department.Corporations - Taxation ; Income tax

El control quimico de plagas de frijol

A description is given of the different manners in which insecticide toxicity is expressed (lethal dose, continuous dose, lethal time, lethal concn., and effective dose), insect resistance to chemicals, insecticide types, application, and the role of chemical control in integrated pest control. Insect pests of beans in Latin America are listed. (CIAT)Se describen las diferentes formas en que se expresa la toxicidad de los insecticidas (dosis letal, dosis continua, tiempo letal, concn. letal y dosis efectiva), la resistencia de los insectos a los productos quimicos, tipos de insecticidas, aplicacion y el papel del control quimico en el control integrado de plagas. Se presenta una lista de los insectos plaga del frijol en America Latina. (CIAT

Residential Care for the Mentally Retarded: A Systemic Analysis of the Creation of a Community Residence and How Its Development was Viewed by Members of the System

The present study, placed in an historical context of care for the mentally retarded, examines the creation and development of a Community Residence for retarded adults. The Residence is described as a system of interrelating groups (the retarded adults, the director and staff, the parents, the Advisory Committee members) whose patterns of communication and interaction affect the nature of the program. The primary sources of data are the observations of the author who was a participant in the develop[ment of the facility and the results of a survey of each of the system’s groups. The survey results indicate some differences in perception amongst the groups but a general consensus of marked positive development since the opening. Some of the initial difficulties involved in the creation of this setting are examined, particularly the varied expectations for program held by the different system members. Through a number of dynamics as the setting developed, the initial difficulties were overcome. The survey results reflect the perception of system members that the situation did improve over time

Retirement Distributions and the Bequest Motive

Managing retirement payouts generally revolves primarily around securing adequate retirement income and assuring the continuity of such income for as long as the retirees live. Many commentators have suggested that the most efficient strategy to deal with these issues for risk-averse retirees is to annuitize retirement benefits. However, these commentators recognize that relatively few retirees actually choose life annuitization (the so-called “annuity puzzle”). One reason for this is the bequest or inheritance motive which involves using income-tax-favored retirement plans to pass wealth to the heirs (probably children) of the retiree or to charity. This chapter discusses the concepts, strategies, and constraints on using tax-favored retirement plans as wealth transfer devices

Consumers' Perception of Food-System Vulnerability to an Agroterrorist Attack

This paper uses results from a 2004 survey (N=1,010) on consumer attitudes toward agroterrorism and food-system security to investigate heterogeneous attributes affecting vulnerability including risk perceptions and fear. Using 15 separate multinomial PROBIT regressions we distinguish between vulnerability on a number of aspects of food-system security including food type and position in the food-supply chain. Vulnerability is not found to be common across food groups or respondents, and a variety of distinguishing characteristics can be used to investigate how individuals might perceive vulnerability.Agribusiness, Food Consumption/Nutrition/Food Safety,

A Resonant Synchronous Vibration Based Approach for Rotor Imbalance Detection

This paper presents a methodology of detecting rotor imbalances, such as mass imbalance and crack-induced imbalance, using shaft synchronous vibrations. An iterative scheme is developed to identify parameters from measured synchronous vibration data. A detection system is integrated by using state-of-the-art commercial analysis equipment. A laboratory rotor test rig is used to verify the system integration and algorithm validation. A real engine test has been carried out and the results are reported

Cosmological Shock Waves and Their Role in the Large Scale Structure of the Universe

We study the properties of cosmological shock waves identified in high-resolution, N-body/hydrodynamic simulations of a $\Lambda$CDM universe and their role on thermalization of gas and acceleration of nonthermal, cosmic ray (CR) particles. External shocks form around sheets, filaments and knots of mass distribution when the gas in void regions accretes onto them. Within those nonlinear structures, internal shocks are produced by infall of previously shocked gas to filaments and knots, and during subclump mergers, as well as by chaotic flow motions. Due to the low temperature of the accreting gas, the Mach number of external shocks is high, extending up to $M\sim 100$ or higher. In contrast, internal shocks have mostly low Mach numbers. For all shocks of $M\ge1.5$ the mean distance between shock surfaces over the entire computed volume is $\sim4 h^{-1}$ Mpc at present, or $\sim 1 h^{-1}$ Mpc for internal shocks within nonlinear structures. Identified external shocks are more extensive, with their surface area $\sim2$ times larger than that of identified internal shocks at present. However, especially because of higher preshock densities, but also due to higher shock speeds, internal shocks dissipate more energy. Hence, the internal shocks are mainly responsible for gas thermalization as well as CR acceleration. In fact, internal shocks with 2 \la M \la 4 contribute $\sim 1/2$ of the total dissipation. Using a nonlinear diffusive shock acceleration model for CR protons, we estimate the ratio of CR energy to gas thermal energy dissipated at cosmological shock waves to be $\sim1/2$ through the history of the universe. Our result supports scenarios in which the intracluster medium contains energetically significant populations of CRs.Comment: 25 pages, 8 figures including 1 in color. To appear in ApJ (v593 n2 August 20, 2003). Postscript file with full resolution ftp://canopus.chungnam.ac.kr/ryu/cosmoshock.p

Evidence for chemical equilibration at RHIC

This contribution focuses on the results of statistical model calculations at RHIC energies, including recently available experimental data. Previous calculations of particle yield ratios showed good agreement with measurements at SPS and lower energies, suggesting that the composite system possesses a high degree of chemical equilibrium at freeze-out. The effect of feeddown contamination on the model parameters is discussed, and the sensitivity of individual ratios to the model parameters ($T$, $\mu_B$) is illustrated.Comment: Talk presented at Strange Quarks in Matter 2001, Frankfurt, September 24-29, 2001. Proceedings to be published by J. Phys. G. 8 pages with 4 figure