WILBERT

Wildauer Bücher+E-Medien Recherche-Tool

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Other Sources  (16)
Collection
  • Other Sources  (16)
Source
Keywords
Language
Years
  • 1
    facet.materialart.
    Unknown
    Brasília: Instituto de Pesquisa Econômica Aplicada (IPEA)
    Publication Date: 2020-01-17
    Description: The ICT Household Survey aims to collect data on information and communication technologies (ICT) access and use in Brazil. We use this research to elaborate two exercises. The first one applies logistic regression to determine the factors responsible for connecting a domicile to the Internet. The second one estimates a demand model for the Internet applying a multinomial model of discrete choice. The model contemplates four types of connection: DSL with fixed telephone line, TV cable or fiber optic and mobile via modem or 3G and 4G chip. In the case of logistic regression, we verified that socioeconomic variables such as schooling, income and social class are factors that influence whether the household is connected or not. We verified that the higher the level of schooling or income, the greater the effect on the probability of the household be connecting to the Internet. We observe that there is no defined pattern concern to the effect of a variable on the probability of choosing a type of connection. Thus, each variable responds differently depending on each type of connection. This study is the first attempt with disaggregated data of estimation of Internet demand for Brazil. Although it contains certain weaknesses due to the limitations of the database, it is still a valid exercise insofar as it suggests important indications for the construction of a more reliable database for the supporting studies of Internet demand in Brazil.
    Keywords: L51 ; L96 ; ddc:330 ; broadband ; internet demand ; logistic regression ; type of connection ; multinomial model
    Language: Portuguese
    Type: doc-type:workingPaper
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    facet.materialart.
    Unknown
    Brasília: Instituto de Pesquisa Econômica Aplicada (IPEA)
    Publication Date: 2020-01-17
    Description: This study evaluated the impact of Fies on the total time and delay in the completion of higher education of students enrolled in presential courses of private institutions, based on information of INEP from 2007 to 2017. Estimates of the Average Treatment Effect on Treated indicated that participation in Fies increased both the results analyzed, total time and delay. In the first phase of the policy, from 2000 to 2009, the increase in completion time for students who received Fies was 8.5 months. In the second phase, from 2010 to 2014, which is characterized by the loosening of the rules for the granting and payment of the loan, the increase was 2.4 years. In the case of the delay in completing the course, the result was significant only in the 2nd phase, indicating an increase of 1.8 years for the students who received the Fies. In this view, it is necessary to introduce incentive mechanisms in the student credit granting policies in order that the student completes the course in regular time.
    Keywords: D22 ; H52 ; I21 ; ddc:330 ; credit for education ; Fies ; completion time ; propensity score matching ; entropy
    Language: Portuguese
    Type: doc-type:workingPaper
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    facet.materialart.
    Unknown
    Brasília: Instituto de Pesquisa Econômica Aplicada (IPEA)
    Publication Date: 2020-01-17
    Description: This paper applies the dynamic linear model (DLM) estimated based on the Bayesian approach to project electricity consumption for five Brazilian regional units. The appeal for the use of DLM in the case of energy consumption is due to the fact that in this model the adjustment occurs in the unit of time ensuring more accurate projections in series with a high degree of variability, such as energy consumption. The results corroborated the expectation regarding the adequacy of DLM for the purpose of making projections. The different forecast validation criteria calculated for a 12-month horizon showed very satisfactory results. In all cases, MLD had a forecast error within the 3% range, taken as a reference for the utilities. In the case of the Center, Northeast and South regions, this indicator was even lower. We tested the robustness of the MDL using a model panel data with random coefficients (MRC) that allows to obtain a set of distinct coefficients for each region, but within a common structure. Regarding forecasting, MRC performance was also reasonable, even underperforming DLM. With the exception of the Southeast region, MRC's Mape was below or in the 3% range for the other regions.
    Keywords: Q4 ; Q43 ; L ; L5 ; L94 ; ddc:330 ; regional energy consumption ; dynamic linear model ; random coefficients ; Mape ; forecast
    Language: Portuguese
    Type: doc-type:workingPaper
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    facet.materialart.
    Unknown
    Brasília: Instituto de Pesquisa Econômica Aplicada (IPEA)
    Publication Date: 2019-01-24
    Description: Although it is a little known fact the Convention no 158 of International Labor Organization (ILO) which prohibits the dismissal of an employee without cause ruled in Brazil from 10 April to 20 November 1996 and thereby providing an excellent opportunity to evaluate the effect of regulation on job market. Using panel data from montly survey of employment we applied a Probit model to check the effects of the introduction of this rule on Brazilian labor market. Our results demonstrate that during the period of validity of the Convention no 158 both the probability of an individual getting a job as the probability of entering the formal labor market suffered negative effect.
    Keywords: J08 ; J88 ; C25 ; ddc:330 ; regulation ; Convention no 158 ; panel data ; probit model
    Language: Portuguese
    Type: doc-type:workingPaper
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    facet.materialart.
    Unknown
    Brasília: Instituto de Pesquisa Econômica Aplicada (IPEA)
    Publication Date: 2019-01-24
    Description: The main objective of this article is to verify the impact of both the incarceration rate and the number of police officers over the homicide rates. Overall, our results suggest that the increase in both the incarceration rate and the number of police officers are important do deter homicides. That is, the successful fight against crime can be achieved by incarceration and police officers independently of what happens with other socioeconomic variables.
    Keywords: K42 ; Z18 ; C23 ; ddc:330 ; criminality ; homicide ; incarceration rate ; number of police officers
    Language: Portuguese
    Type: doc-type:workingPaper
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    facet.materialart.
    Unknown
    Brasília: Instituto de Pesquisa Econômica Aplicada (IPEA)
    Publication Date: 2018-04-18
    Description: Although there is agreement that the effect of broadband expansion on the economy, from an general overview, is positive; not an unanimous voice arguments that this impact be positive on all sectors. By applying a multivariate two way panel data model and estimated by bayesian methodology, this study aims to determine the effect of broadband expansion on the sectors of the economy. In order to take into account the geographical, social and economic differences among municipalities cluster analysis was employed in order to isolate groups of municipalities with approximate characteristics. The results illustrate that the impact of broadband is not positive for all sectors, being positive in the most dynamic and technology-intensive sectors such as the industrial and service sectors; and negative where this does not happen as in agricultural sector.
    Keywords: O57 ; O47 ; L69 ; ddc:330 ; broadband ; multivariate model ; panel data ; clustering ; Gibbs sampler
    Language: Portuguese
    Type: doc-type:workingPaper
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    facet.materialart.
    Unknown
    Brasília: Instituto de Pesquisa Econômica Aplicada (IPEA)
    Publication Date: 2018-04-18
    Description: The objective of this study is to predict the potential broadband market in Brazil. This task is done by combining information from two national databases: the Demographic Census of 2010 and the National Survey by Household Sample (Pnad) of 2015. The Pnad 2015 is used to estimate the probability of the household accessing internet by broadband technology using a logit regression. The broadband market is predicted using the estimated model with the same covariates found in the Demographic Census 2010. The prediction indicated a potential market of 45 million households, an additional of 6 million households in relation to the current situation. The new size of the broadband market is estimated if there is a 10% increase in the average penetration of broadband services in the main metropolitan regions. In this scenario, it is observed that the new market reaches 50,7 million households.
    Keywords: L51 ; L96 ; ddc:330 ; broadband ; internet ; logit regression ; potential market ; prediction
    Language: Portuguese
    Type: doc-type:workingPaper
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    facet.materialart.
    Unknown
    Brasília: Instituto de Pesquisa Econômica Aplicada (IPEA)
    Publication Date: 2018-04-18
    Description: This study aims to present a model for economic evaluation of the expansion of the broadband network for the Brazilian municipalities. This is done taking into account not only the economic return, but also the cost of expanding the network. Return is calculated from three criteria of prioritization: size of population, HDI, and potential market. Once one of these criteria is chosen, the effect on certain variables of interest, such as the effect on the product, access to the poorest population, etc., is estimated. To determine the potential demand of broadband, we estimated model combining two databases: PNAD 2015 and Census 2010. The effect of broadband on municipal GDP was obtained using the panel data model. To evaluate the cost to expand network we the applied the solution of the minimum generating tree from the graph theory. It was observed that the criterion based on the potential market is the alternative that generates greater economic return. Also the results obtained based on the size of the population are close to this one, whereas the prioritization by the municipal HDI is the criterion that presents the worst performance that penalizes the poor and the extremely poor population.
    Keywords: C21 ; O33 ; ddc:330 ; broadband ; backhaul ; graph theory ; minimum spanning tree ; logit regression ; panel data
    Language: Portuguese
    Type: doc-type:workingPaper
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    facet.materialart.
    Unknown
    Brasília: Instituto de Pesquisa Econômica Aplicada (IPEA)
    Publication Date: 2018-04-18
    Description: Based on the hypothesis that the rulers of monetary and fiscal policy in Brazil may have been submitted to different regimes, the present study applies Leeper model (1991; 2005) in order to identify the chronology of policy regimes regarding their active and passive character. The policy rules are estimated by the Markov Switching (MS) model in which the regimes are endogenously identified. The results obtained allow us to place that fiscal dominance occurred in 2010 and between 2013 and 2014 while monetary dominance happened in much of 2003 and during the period from 2005 to 2007. The model still seeks to explain why the rate of Inflation during 2015 remained on the rise even though the monetary policy imposed by Central Bank was active.
    Keywords: E52 ; E58 ; E62 ; ddc:330 ; active monetary policy ; fiscal dominance ; reaction function ; regime change ; Markov-Switching model
    Language: Portuguese
    Type: doc-type:workingPaper
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    facet.materialart.
    Unknown
    Brasília: Instituto de Pesquisa Econômica Aplicada (IPEA)
    Publication Date: 2018-04-18
    Description: The aim of this study is to evaluate the effect of broadband on the GDP taking into account regional differences. This is done by using the econometric model of panel data based on database of 5564 municipalities from 2007 to 2014. In order to incorporate the regional differences we use information derived from cluster analysis that isolates homogeneous groups of municipalities. Simultaneous causality between broadband and GDP is identified through instrumental variable method. Regional differentiated effects of broadband among municipalities were observed. The greatest impact of broadband occurs on those municipalities with the highest income per capita and high urban concentration followed by ones with a strong concentration in the service, commerce and construction sectors. The impact of broadband is also significant in the municipalities linked to the dynamic agricultural sector. In poorer municipalities the effect of broadband also occurs although with less intensity. Finally, we test the hypothesis that the effect of broadband on the output has an "inverted U" form that indicates that the effect rises to a certain level of access, but decreases after it is exceeded. The econometric results do not indicate that this hypothesis can be denied so that the impact is more intense in the intermediate levels of access of broadband.
    Keywords: C21 ; O33 ; ddc:330 ; broadband ; cluster analysis ; K-means ; panel data ; instrumental variable
    Language: Portuguese
    Type: doc-type:workingPaper
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...