A structural model for corporate profit in the U.S. industry

I estimate a theoretically and statistically satisfying model to account for corporate profit represented by Net Rental Income (NRI) for one of the largest Real Estate Investment Trust companies (REIT) in the U.S. I claim that I have found an accurate method to forecasts the direction and dollar amount of corporate profit in the apartment industry in The U.S. that can be extended to the remaining branches of the U.S. industry. The variables that together account for ninety seven percent of the variation in NRI for this apartment company are, one-period time lag of lease renewals, the Federal Funds interest rate end of month, total gross potential of the company, total concessions, two-period time lag of move-ins, the ratio between total non-farm employment and total construction permits authorized, the inventory of houses in the U.S, one-period time lag of move-outs and this REIT apartment units occupied.REIT; Corporate Profit; Net Rental Income (NRI); demand for lease renewals

Decomposing violence: terrorist murder in the twentieth century in the U.S.

Abstract: I apply the Beveridge-Nelson business cycle decomposition method to the time series of murder in the United States (1900-2004). Separating out “permanent” from “cyclical” murder, I hypothesize that the cyclical part coincides with documented waves of organized crime, internal tensions, breakdowns in social order, crime legislation, alternation in power, social, and political unrest overseas as wars, and recently with the periodic terrorist attacks in the country. The cyclical component estimated shows that, 9/11 2001 terrorist attacks occurred, two years after the end of the last declining cycle of 1994-1999. The estimated cyclical terrorist murder component warns, that terrorist attacks in U.S., soil from 1923 to 2004, historically occur in, and around the vicinity of the turning points, of whether a declining, or ascending cycle, and so, it must be used in future research to construct a model for explaining the causal reasons for its movement across time, and for forecasting cyclical terrorist murder, and terrorist attacks.Keywords: United States; Colombia; murder; Beveridge-Nelson; business cycle; decomposition; time-series; domestic terrorism; cyclical terrorist murder; cyclical terrorist attacks; cyclical terrorist murder and attacks indicator

A model of cyclical terrorist murder in Colombia, 1950-2004. Forecasts 2005-2019

Abstract: This paper continues a research born in 1993 as a consequence of the growing concern regarding the escalation of violence in Colombia; its objective is to create an econometric model capable of forecasting the path of terrorist murder under different policy options and helping the country in the design of state policy drawing the lineaments for reaching the pacification of the country. I claim that the approach presented here is the only way of creating an econometric model for terrorist murder in Colombia. In the first part I use The Beveridge and Nelson decomposition of economic time series to estimate the cyclical component of murder, which is used later to construct a theoretically and statistically satisfying model to account for cyclically motivated terrorist murder in Colombia, 1950-2004. The variables that together account for eighty three percent of the variation in cyclical terrorist murder are the years of Colombia’s La Violencia period when the peasant self-defense movements appeared, the years of the so-called National Front political collusion between the two main establishment parties, the real trade balance, the size of Colombia’s military forces as a proxy for all armed forces (military, para-military, guerrilla, and drug-related) in the country, the unemployment rate, the number of students matriculated in all modalities and people displaced in the country. The forecasts for cyclical terrorist murder for 2003-2004 show the big dilemma facing the Colombian authorities: the strong reduction of displaced people from 212,000 in 2003 to 117,000 in 2004 boosted the cyclical terrorist murder in the countryside, erasing the initial results by president Uribe’s administration at controlling the intensity of the conflict and implying that any future policy at diminishing it should control the number of displaced people, one of the biggest problems facing Colombia today. The final section presents forecasts for 2005-2019 suggesting, that peace will be attained around year 2008 and, that the way, at this point to reach sustainable peace is through the continuation of the Democratic Security Policy and strong presidential leadership headed towards disarmament of all armed actors in the country combined with the implementing of political and social changes that will secure lasting peace before year 2019.Colombia; Beveridge and Nelson; cyclical terrorist murder; democratic security policy; sustainable peace; permanent peace; lasting peace

Terrorist murder, cycles of violence, and terrorist attacks in New York City during the last two centuries

: I apply the Beveridge-Nelson business cycle decomposition method to the time series of murder of New York City – NYC (1797-2005). Separating out “permanent” from “cyclical” murder, I hypothesize that the cyclical part coincides with documented waves of organized crime, internal tensions, breakdowns in social order, crime legislation, social, and political unrest, and recently with the periodic terrorist attacks in the city. The estimated cyclical terrorist murder component warns that terrorist attacks in New York City from 1826 to 2005, historically occur in the estimated turning point dates, of whether a declining, or ascending cycle, and so, it must be used in future research to construct a model for explaining the causal reasons for its movement across time, and for forecasting terrorist murder and attacks for New York City.Model of cyclical terrorist murder for Colombia; 1950-2004. Forecasts 2005-2019; the econometrics of violence; terrorism; and scenarios for peace in Colombia from 1950 to 2019; scenarios for sustainable peace in Colombia by year 2019; decomposing violence: crime cycles in the twentieth in the United States; using the Beveridge and Nelson decomposition of economic time series for pointing out the occurrence of terrorist attacks; decomposing violence: terrorist murder; and attacks in New York State from 1933 to 2005

Automatic Time-Bound Analysis for High-Level Languages

Thesis (PhD) - Indiana University, Computer Sciences, 2006Analysis of program running time is important for reactive systems, interactive environments, compiler optimizations, performance evaluation, and many other computer applications. Automatic and efficient prediction of accurate time bounds is particularly important, and being able to do so for high-level languages is particularly desirable. This dissertation presents a general approach for automatic and accurate time-bound analysis for high-level languages, combining methods and techniques studied in theory, languages, and systems. The approach consists of transformations for building time-bound functions in the presence of partially known input structures, symbolic evaluation of the time-bound function based on input parameters, optimizations to make the analysis efficient as well as accurate, and measurements of primitive parameters, all at the source-language level. We describe analysis and transformation algorithms and explain how they work. We have implemented this approach and performed a large number of experiments analyzing Scheme programs. The measured worst-case times are closely bounded by the calculated bounds. We describe our prototype system, ALPA, as well as the analysis and measurement results

Subaqueous landslides at the distal basin of Lago Nahuel Huapi (Argentina): Towards a tsunami hazard evaluation in Northern Patagonian lakes

The May 22nd, 1960 Valdivia earthquake, Chile (Mw 9.5) triggered a series of subaqueous mass-wasting processes (debris flows and slides) in Lago Nahuel Huapi (Argentina), generating a tsunami-like wave that hit the coasts of San Carlos de Bariloche. Aiming to provide a first preliminary insight into tsunami hazards for the lakeshore communities, in this paper we identify and characterize the subaqueous landslides at the populated distal basin of the lake. Swath bathymetric and seismic profiling surveys were carried out and high-resolution digital elevation models were derived from these data to perform a landslide inventory map. A series of morphometrical parameters (including the landslide area, the volume of displaced materials and the run-out distance, among others) were estimated upon selected events. The results indicated that landslide activity at the distal basin of Lago Nahuel Huapi has been concentrated in the vicinity of Bariloche (massive landslide triggered by the 1960 earthquake) and within steep delta fronts where the slope failures typically initiate at shallow waters (9–11 m depth). The sliding mass frequently travels basinward along a great distance (≥1000 m). At the delta fronts, the volume of material removed by landslides can reach ~40 × 104 m3 , leaving scar areas of up to 13 m thick. The periodic occurrence of rotational–translational mass movements initiating at the upper edge of the delta fronts, with vertical displacements of the mobilized materials reaching ~200 m, probably represents a potential tsunami hazard for the nearby populated coasts.Fil: Beigt, Debora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales. Universidad Nacional del Comahue. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales.; ArgentinaFil: Villarosa, Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales. Universidad Nacional del Comahue. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales.; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; ArgentinaFil: Gomez, Eduardo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina. Universidad Tecnológica Nacional; ArgentinaFil: Manzoni, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales. Universidad Nacional del Comahue. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales.; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentin

Developing the concept of Sustainable Peace using Econometrics and scenarios granting Sustainable Peace in Colombia by year 2019

This paper belongs to my research program on violence and terrorism started in 1993, as a consequence of the growing concern regarding the increase in Colombian violence, and especially for its escalation during the 1990’s. After 14 years of research, particularly after developing a model of cyclical terrorist murder in Colombia 1950-2004, forecasts 2005-2019 (Gómez-Sorzano 2005, http://mpra.ub.uni-muenchen.de/134/01/MPRA_paper_134.pdf), the econometrics of violence, terrorism, and scenarios for peace in Colombia from 1950 to 2019 (Gómez-Sorzano 2006, http://mpra.ub.uni-muenchen.de/539/01/MPRA_paper_539.pdf), and Scenarios for Sustainable Peace in Colombia by year 2019 (Gómez-Sorzano 2006B, http://mpra.ub.uni-muenchen.de/135/01/MPRA_paper_135.pdf) , I claim in this paper that I have formally developed the concept of Sustainable Peace using advanced econometrics. The concept of Sustainable Peace is thus presented to the international academic community, and is based in the construction of a structural econometric model for National murder, and a model for cyclical terrorist murder that have been simultaneously used for designing Scenarios granting Sustainable Peace in Colombia by year 2019

Higher Spins and Matter Interacting in Dimension Three

The spectrum of Prokushkin--Vasiliev Theory is puzzling in light of the Gaberdiel--Gopakumar conjecture because it generically contains an additional sector besides higher-spin gauge and scalar fields. We find the unique truncation of the theory avoiding this problem to order 2 in perturbations around AdS$_3$. The second-order backreaction on the physical gauge sector induced by the scalars is computed explicitly. The cubic action for the physical fields is determined completely. We comment on a different higher-spin theory without such additional fields at $\lambda=1$.Comment: 55 pages + appendices, LaTex. Final version to appear in JHE

The econometrics of violence, terrorism and scenarios for peace in Colombia from 1950 to 2019

Abstract: This paper continues a research born in 1993 as a consequence of the concern regarding the increase in Colombian violence, and especially for its escalation during the 1990’s, its objective is to create an econometric model capable of forecasting the path of terrorist murder under different policy options and helping the country in the design of a state policy drawing the lineaments for reaching the pacification of the country. In the first part I use The Beveridge and Nelson decomposition of economic time series to estimate the cyclical component of murder which is used to construct a theoretically and statistically satisfying model to account for it from 1950 to 2004. The variables that together account for eighty three percent of the variation in cyclical terrorist murder are the years of Colombia’s La Violencia period when the peasant self-defense movements appeared, the years of the so-called National Front political collusion between the two main establishment parties, the real trade balance, the size of Colombia’s military forces as a proxy for all armed forces (military, para-military, guerrilla, and drug-related) in the country, the unemployment rate, the number of students matriculated in all modalities and people displaced in the country. The forecasts for cyclical terrorist murder for 2005-2007 show the big dilemma facing the Colombian authorities: the strong reduction of displaced people from 2003 to 2004 boost the cyclical terrorist murder in the countryside, erasing the initial results by president Uribe’s administration at controlling the intensity of the Colombian civil conflict. The second part presents a first approach at constructing a theoretical near-VAR system for cyclical terrorist murder and social and economic variables in Colombia. The third section presents forecasts 2004-2007 estimated by the single equation model and the near VAR-system. Both models show a jump in terrorist murder by 2004 and 2005 implying that any future policy at diminishing the conflict should control the number of displaced people, one of the biggest problems facing Colombia today. Terrorist murder is expected to decrease again by 2006 and 2007 suggesting that the continuation of The Democratic Security Policy will be destroying the roots of the Colombian civil conflict. The final section presents 11 scenarios 2005-2010 and 18 scenarios 2006-2019. According to them peace will be attained around year 2008 and sustainable peace will be granted before year 2019.Colombia; cyclical terrorist murder; democratic security policy; sustainable peace

Scenarios for sustainable peace in colombia by year 2019

This paper presents the simulation results of the model of cyclical terrorist murder for Colombia (Gómez-Sorzano, 2005) on the purpose of doing sensitivity analysis to help the country in the design of a policy bringing sustainable peace before year 2019. The first part presents 11 scenarios 2005-2010. The final section shows 18 additional scenarios 2006-2019. According to them peace will be attained around year 2008 and sustainable peace will be granted before year 2019.cyclical terrorist murder; democratic security policy; sustainable peace