A Model of Macroeconomic Activity: Volume 1, The Theoretical Model. Volume 2, The Empirical Model.

1977 ◽  
Vol 9 (2) ◽  
pp. 378
Author(s):  
Robert H. Rasche ◽  
Ray C. Fair
Keyword(s):  
Theoretical Model ◽  
Empirical Model ◽  
Macroeconomic Activity

Appointee vacancies in US executive branch agencies

2020 ◽  
pp. 1-24
Author(s):  
William G. Resh ◽  
Gary E. Hollibaugh ◽  
Patrick S. Roberts ◽  
Matthew M. Dull
Keyword(s):  
United States ◽  
Theoretical Model ◽  
Empirical Model ◽  
Separation Of Powers ◽  
Executive Branch ◽  
Principal Agent ◽  
High Status ◽  
Constitutional Design ◽  
Committee Chair ◽  
Institutional Politics

Abstract We analyse United States presidential appointee positions subject to Senate confirmation without a confirmed appointee in office. These “vacant” positions are byproducts of American constitutional design, shaped by the interplay of institutional politics. Using a novel dataset, we analyse appointee vacancies across executive branch departments and single-headed agencies from 1989 to 2013. We develop a theoretical model that uncovers the dynamics of vacancy onset and length. We then specify an empirical model and report results highlighting both position and principal–agent relations as critical to the politics of appointee vacancies. Conditional on high status positions reducing the frequency and duration of vacancies, we find important principal–agent considerations from a separation of powers perspective. Appointee positions in agencies ideologically divergent from the relevant Senate committee chair are vacant for less time than in ideologically proximal agencies. Importantly, this relationship strengthens as agency ideology diverges away from the chair and towards the chair’s party extreme.

scholarly journals Systemic Risk Modeling

2020 ◽  
Vol 20 (54) ◽  
Author(s):  
Raphael Espinoza ◽  
Miguel Segoviano ◽  
Ji Yan
Keyword(s):  
Theoretical Model ◽  
Empirical Model ◽  
Systemic Risk ◽  
Empirical Models ◽  
Equity Returns ◽  
Counterparty Risk ◽  
Risk Modeling ◽  
Cross Sectional ◽  
Fire Sales ◽  
Multivariate Density

We propose a framework to link empirical models of systemic risk to theoretical network/ general equilibrium models used to understand the channels of transmission of systemic risk. The theoretical model allows for systemic risk due to interbank counterparty risk, common asset exposures/fire sales, and a “Minsky" cycle of optimism. The empirical model uses stock market and CDS spreads data to estimate a multivariate density of equity returns and to compute the expected equity return for each bank, conditional on a bad macro-outcome. Theses “cross-sectional" moments are used to re-calibrate the theoretical model and estimate the importance of the Minsky cycle of optimism in driving systemic risk.

scholarly journals Driven oscillations of a curved object under a laminar jet of water

2021 ◽  
Vol 5 ◽  
pp. 1
Author(s):  
Francis Pagaud ◽  
Léa Delance
Keyword(s):  
Theoretical Model ◽  
Empirical Model ◽  
Flat Surface ◽  
Laminar Jet ◽  
Dynamic Hysteresis ◽  
Direct Measurements ◽  
Spontaneous Oscillations

By putting a ball on a flat surface under a jet of water, one may observe spontaneous oscillations of the ball of well-defined amplitude and frequency. As a simpler conformation, the study of a cylinder shows that the mere effect of the jet is sufficient to observe an oscillation for a certain range of parameters such as the curvature of the object and the characteristics of the jet. An empirical model of the forces strengthened by direct measurements of the forces and torque allowed us to predict a theoretical period of 0.64 s when the experimental one was 0.80 s. Further, the origin of the oscillation was determined to be a dynamic hysteresis of the torque as it is deflected on one side of the can even when the jet hits its center. This phenomenon results in a gain of energy that counterbalances the losses by friction and leads to oscillations. Domain of oscillation is also shortly addressed while improvements of the theoretical model and other experiments are suggested as well.

A New Method for Wax Precipitation Prediction of Waxy Oil Wells and Software Designing

2014 ◽  
Vol 568-570 ◽  
pp. 1437-1442
Author(s):  
Ren Yuan Sun ◽  
Cheng Xiang Wang ◽  
Ying Long Xuan ◽  
Qi Yong Xiong ◽  
Ai Xian Huang ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Empirical Model ◽  
Oil Production ◽  
Mechanism Analysis ◽  
Wax Precipitation ◽  
Waxy Oil ◽  
Precipitation Prediction ◽  
Production Wells ◽  
Water Cut ◽  
Productive Time

Wax precipitation of oil production wells seriously influence the oil production. In order to improve the level of wax removal, it is necessary to predict the depth, thickness and period of wax precipitation in the wellbore with oil production. On the basis of the mechanism analysis for wax precipitation in the wellbore, the theoretical model and empirical model were built up and programmed wax precipitation of oil production wells software and the results by the two models were compared. The sensitive factors which influence wax precipitation in the wellbore were analyzed. The results show that the two models can be used to predict the wax thickness, depth and precipitation cycle. The empirical model for wax precipitation profile prediction is more accurate than the theoretical model. The wax precipitation varies with the productive time and water cut.

A Model of Macroeconomic Activity. Volume I: the Theoretical Model.

1976 ◽  
Vol 86 (341) ◽  
pp. 126
Author(s):  
K. F. Wallis ◽  
R. C. Fair
Keyword(s):  
Theoretical Model ◽  
Macroeconomic Activity

The Circular Model of Victimization and Teamwork Within the Italian Anti-Violence Centers: A General Survey

2020 ◽  
Vol 58 (2) ◽  
pp. 153-172
Author(s):  
Marco Monzani
Keyword(s):  
Theoretical Model ◽  
Family Violence ◽  
International Society ◽  
Empirical Model ◽  
Explanatory Model ◽  
Necessary Condition ◽  
General Survey ◽  
Circular Model ◽  
Correct Understanding ◽  
First Moment

AbstractA correct understanding of the dynamics and mechanisms that make it possible for a woman to become a victim of intra-family violence allows the necessary measures to be taken so that she can escape from the situation of victimization. Emilio C. Viano, President of the International Society of Criminology, defines the victim of an abuse as “any subject injured or that has suffered wrongdoing on the part of others, who perceives herself to be a victim, who shares the experience with others looking for help, assistance and compensation, who is recognized as a victim and who presumably is being helped by public, private or collective agencies/structures”. Before the birth of Anti-Violence Centers it was believed that the awareness of being a victim was the necessary condition for a woman to ask for help. Experience has shown that, in reality, it is the request for help that allows her to begin a process of awareness together with the operators in the Anti-Violence Centers. This reflection has led to the creation of a theoretical model called “The Circular Model of Victimization”. The aim of the research, and which is presented here, was to verify whether the Italian Anti-Violence Centers recognize the Circular Model in the daily operational reality, and thus to ascertain whether this model can be considered a real empirical model, as well as a theoretical explanatory model. In conclusion, the revisited Circular Model of Victimization will be presented, in which it is assumed that the way out of the circuit of violence passes from a first moment of perception of victimization to arrive at a real awareness of the same.

scholarly journals Involucramiento docente y condiciones del aula: una díada para mejorar la convivencia escolar en bachillerato

2020 ◽  
Vol 38 (2) ◽  
pp. 397-414
Author(s):  
Mario Alberto González Medina ◽  
Diana Carolina Treviño Villareal
Keyword(s):  
Secondary Education ◽  
Theoretical Model ◽  
Empirical Model ◽  
School Environment ◽  
Teaching And Learning ◽  
Structural Equations ◽  
Decisive Factor ◽  
Community Life ◽  
Review Of The Literature ◽  
The Relationship

Una mejora en la convivencia escolar resulta ser un baluarte que viene a influir en las relaciones que se dan al interior de las escuelas, no obstante, para alcanzar dicha mejora, es necesario conocer aquellos elementos que la favorecen. Derivado de esto, el objetivo del presente trabajo es determinar la relación entre los factores Atención, Participación, Sanciones y Condiciones del Aula con la Convivencia escolar en alumnos de bachillerato. La muestra estuvo conformada por 47397estudiantes de la República Mexicana; fue utilizado un cuestionario que forma parte de la Evaluación de Condiciones Básicas para la Enseñanza y el Aprendizaje (ECEA) realizado por el Instituto Nacional para la Evaluación en México. Después de una revisión de la literatura, se propuso un modelo teórico con los factores mencionados. Posteriormente, fue aplicada la técnica de modelaje con ecuaciones estructurales y se obtuvo un modelo empírico. Se hizo evidente la relación entre los factores citados con la convivencia escolar, esto es, la atención que proporcionan los maestros, la participación que promueven, las sanciones que aplican y las condiciones del aula son cruciales para mejorar la convivencia. Se concluye que tanto el involucramiento de los docentes como de las autoridades educativas es transcendental en este tema. An improvement in school coexistence figures as a decisive factor influencing relationships within the school community. However, in order to achieve such an improvement, it is necessary to know the elements that may favor the aforementioned interaction and community life. Hence, the objective of the present work is to determine the relationship between several factors, namely Attention, Participation, Sanctions and Classroom Conditions, in secondary education. The sample consisted of 47397 students from the Mexican Republic, and a questionnaire conducted by the National Institute for Evaluation in Mexico as part of the Assessment of Basic Conditions for Teaching and Learning (ECEA) was used. After a review of the literature, a theoretical model considering the mentioned factors was proposed. Subsequently, the modeling technique with structural equations was applied and an empirical model was obtained. Here, the relationship between the aforementioned factors and school interaction became evident; that is, the attention provided by the teachers, the participation promoted, the sanctions applied and the conditions of the classroom were proven crucial to improving the school environment. It is hence concluded that both the involvement of teachers and educational authorities are transcendental in this area.

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