scholarly journals Inputs, Incentives, and Complementarities in Education: Experimental Evidence from Tanzania*

2019 ◽  
Vol 134 (3) ◽  
pp. 1627-1673 ◽  
Author(s):  
Isaac Mbiti ◽  
Karthik Muralidharan ◽  
Mauricio Romero ◽  
Youdi Schipper ◽  
Constantine Manda ◽  
...  
Keyword(s):  
Student Performance ◽  
Large Scale ◽  
Public Spending ◽  
Teacher Incentives ◽  
Positive Effects ◽  
Individual Effects ◽  
The Individual ◽  
The Cost ◽  
The Impact ◽  
Joint Provision

AbstractWe present results from a large-scale randomized experiment across 350 schools in Tanzania that studied the impact of providing schools with (i) unconditional grants, (ii) teacher incentives based on student performance, and (iii) both of the above. After two years, we find (i) no impact on student test scores from providing school grants, (ii) some evidence of positive effects from teacher incentives, and (iii) significant positive effects from providing both programs. Most important, we find strong evidence of complementarities between the programs, with the effect of joint provision being significantly greater than the sum of the individual effects. Our results suggest that combining spending on school inputs (the default policy) with improved teacher incentives could substantially increase the cost-effectiveness of public spending on education.

scholarly journals Teacher Incentives and Student Performance: Evidence from Brazil

2021 ◽  
pp. 1-55
Author(s):  
Andrea Lépine
Keyword(s):  
Student Achievement ◽  
Student Performance ◽  
Program Implementation ◽  
Large Scale ◽  
School Staff ◽  
Difference In Differences ◽  
Teacher Incentives ◽  
Positive Effects ◽  
Incentive Program ◽  
The Impact

This paper provides evidence on a large-scale teacher incentive program in the state of São Paulo, Brazil, which awarded group bonuses to teachers and school staff conditional on improvements in student performance. By using a difference-in-differences (DD) and tripledifferences (DDD) framework with a series of alternative counterfactual groups, I show that the program had positive effects on student achievement up to seven years after the program implementation, although improvements vary across grades and subjects. While it could be expected that free-riding effects increase with the number of teachers in schools, limiting the impact of the program, this does not seem to be the case.

Evaluating the effect of climate variation on the cost efficiency of a crop permit policy in Southern Sweden

2013 ◽  
Vol 4 (2) ◽  
pp. 110-117
Author(s):  
Dennis Collentine ◽  
Holger Johnsson
Keyword(s):  
Cost Efficiency ◽  
Agricultural Sector ◽  
Policy Design ◽  
Correlation Coefficients ◽  
Nitrogen Loads ◽  
Weather Variation ◽  
The Baltic ◽  
The Individual ◽  
The Cost ◽  
The Impact

Current international agreements call for a significant reduction of nitrogen loads to the Baltic Sea. New measures to reduce nitrogen loads from the agricultural sector and an increased focus on cost efficiency will be needed to meet reduction targets. For policy design and evaluation it is important to understand the impact of weather on the efficiency of abatement measures. One new proposed policy is the use of crop permits based on weather normalized average leaching. This paper describes the use of the Spearman method to determine the efficiency of this policy with annual weather variation. The conclusion is that the values of the Spearman correlation coefficients in the study indicate that using average leaching for the individual crops on specific soil types for calculating crop permit requirements is an efficient policy. The Spearman method is demonstrated to be a simple useful tool for evaluating the impact of weather and is recommended for use in new studies.

scholarly journals Modelling key market impacts and land allocation for biofuel production and forestry

2006 ◽  
Vol 2006 ◽  
pp. 1-12
Author(s):  
A. Korobeinikov ◽  
P. Read ◽  
A. Parshotam ◽  
J. Lermit
Keyword(s):  
Carbon Dioxide ◽  
Atmospheric Carbon Dioxide ◽  
Large Scale ◽  
Low Cost ◽  
Wood Products ◽  
Biofuel Production ◽  
Fuel Wood ◽  
Carbon Dioxide Levels ◽  
The Cost ◽  
The Impact

It has been suggested that the large scale use of biofuel, that is, fuel derived from biological materials, especially in combination with reforestation of large areas, can lead to a low-cost reduction of atmospheric carbon dioxide levels. In this paper, a model of three markets: fuel, wood products, and land are considered with the aim of evaluating the impact of large scale biofuel production and forestry on these markets, and to estimate the cost of a policy aimed at the reduction of carbon dioxide in the atmosphere. It is shown that the costs are lower than had been previously expected.

scholarly journals Estimates for the impact of ultraviolet background fluctuations on galaxy clustering measurements

2019 ◽  
Vol 485 (4) ◽  
pp. 5059-5072 ◽  
Author(s):  
Phoebe Upton Sanderbeck ◽  
Vid Iršič ◽  
Matthew McQuinn ◽  
Avery Meiksin
Keyword(s):  
Power Spectrum ◽  
Large Scale ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Galaxy Surveys ◽  
Intensity Mapping ◽  
Redshift Galaxy ◽  
Halo Gas ◽  
The Cost ◽  
The Impact

ABSTRACT Spatial fluctuations in ultraviolet backgrounds can subtly modulate the distribution of extragalactic sources, a potential signal and systematic for large-scale structure surveys. While this modulation has been shown to be significant for 3D Ly α forest surveys, its relevance for other large-scale structure probes has been hardly explored, despite being the only astrophysical process that likely can affect clustering measurements on the scales of ≳Mpc. We estimate that the background fluctuations, modulating the amount of H i, have a fractional effect of (0.03–0.3) × (k/[10−2 Mpc−1])−1 on the power spectrum of 21 cm intensity maps at z = 1–3. We find a smaller effect for H α and Ly α intensity mapping surveys of (0.001–0.1) × (k/[10−2 Mpc−1])−1 and even smaller effect for more traditional surveys that correlate the positions of individual H α or Ly α emitters. We also estimate the effect of backgrounds on low-redshift galaxy surveys in general based on a simple model in which background fluctuations modulate the rate halo gas cools, modulating star formation: We estimate a maximum fractional effect on the power of ∼0.01 (k/[10−2 Mpc−1])−1 at z = 1. We compare sizes of these imprints to cosmological parameter benchmarks for the next generation of redshift surveys: We find that ionizing backgrounds could result in a bias on the squeezed triangle non-Gaussianity parameter fNL that can be larger than unity for power spectrum measurements with a SPHEREx-like galaxy survey, and typical values of intensity bias. Marginalizing over a shape of the form k−1PL, where PL is the linear matter power spectrum, removes much of this bias at the cost of ${\approx } 40{{\ \rm per\ cent}}$ larger statistical errors.

scholarly journals The Efficacy of Ethnic Stacking: Military Defection during Uprisings in Africa

2019 ◽  
Vol 5 (4) ◽  
pp. 695-702 ◽  
Author(s):  
Julien Morency-Laflamme ◽  
Theodore McLauchlin
Keyword(s):  
Large Scale ◽  
Armed Forces ◽  
Future Research ◽  
Group Loyalty ◽  
Limited Support ◽  
History Of ◽  
Group Members ◽  
Using Data ◽  
The Cost ◽  
The Impact

Abstract Does ethnic stacking in the armed forces help prevent military defection? Recent research, particularly in Africa and the Middle East, suggests so; by favoring in-groups, regimes can keep in-group soldiers loyal. In-group loyalty comes at the cost of antagonizing members of out-groups, but many regimes gladly run that risk. In this research note, we provide the first large-scale evidence on the impact of ethnic stacking on the incidence of military defection during uprisings from below, using data on fifty-seven popular uprisings in Africa since formal independence. We find clear evidence for the downside: ethnic stacking is associated with more frequent defection if out-group members are still dominant in the armed forces. We find more limited support for the hypothesized payoff. Ethnic stacking may reduce the risk of defection, but only in regimes without a recent history of coup attempts. Future research should therefore trace the solidification of ethnic stacking over time.

Does China’s transportation infrastructure have an impact on employment in the service sector?

Kybernetes ◽  
2020 ◽  
Vol 49 (11) ◽  
pp. 2737-2753
Author(s):  
Hui Wang ◽  
Meiqing Zhang
Keyword(s):  
Large Scale ◽  
Service Industry ◽  
Spillover Effect ◽  
Transportation Infrastructure ◽  
Content Type ◽  
Inland Waterways ◽  
Spatial Spillover ◽  
Positive Effects ◽  
The Impact ◽  
Spatial Spillover Effect

Purpose The large-scale construction of China’s transportation infrastructure has driven the flow of elements between regions, which has provided convenient conditions for the accumulation of advantageous resources. Design/methodology/approach Based on the panel data of 31 provinces in China in the past 2003-2017 years, this paper applies the spatial econometric model and partial differential method and empirically analyzes the spatial spillover effect of transportation infrastructure on employment in the service industry under four spatial weighting matrices. Findings The results show that for every 1 per cent increase in the level of transportation infrastructure, the employment density of the service industry in the region can be increased by 0.1274 per cent. It is worth noting that roads promote the employment of the service industry more than railways and inland waterways. However, inland waterways have not shown positive effects. The results on spatial spillover of transportation infrastructure indicate that railway has obvious promotion effect on the employment level of service industry in the surrounding area, while the highway has hindered the effect. The spatial spillover effect of inland waterway is not obvious. Originality/value The value of this paper is to consider the impact of China’s transportation infrastructure on employment in a particular industry, especially in the service industry. The research will help to provide empirical evidence for policymakers. The government needs to invest and build transportation infrastructure based on the stage and development potential of the employment development of the regional service industry.

Communicating Public Health Advice After a Chemical Spill: Results From National Surveys in the United Kingdom and Poland

2013 ◽  
Vol 7 (1) ◽  
pp. 65-74 ◽  
Author(s):  
Julia M. Pearce ◽  
G. James Rubin ◽  
Richard Amlôt ◽  
Simon Wessely ◽  
M. Brooke Rogers
Keyword(s):  
Public Health ◽  
United Kingdom ◽  
Large Scale ◽  
Hazardous Substance ◽  
Crisis Communications ◽  
Public Health Preparedness ◽  
The United Kingdom ◽  
The Cost ◽  
And Coping ◽  
The Impact

AbstractObjectiveThe aim of this study was to enhance public health preparedness for incidents that involve the large-scale release of a hazardous substance by examining factors likely to influence public responses to official guidance on how to limit their exposure.MethodsAn online demographically representative survey was conducted in the United Kingdom (n = 601) and Poland (n = 602) to test the strength of association of trust in authorities, anxiety, threat, and coping appraisals with the intention to comply with advice to shelter in place following a hypothetical chemical spill. The impact of ease of compliance and style of message presentation were also examined.ResultsParticipants were more likely to comply if at home when the incident happened, but message presentation had little impact. Coping appraisals and trust were key predictors of compliance, but threat appraisals were associated with noncompliance. Anxiety was seen to promote behavioral change. UK participants were more likely to comply than Polish participants.ConclusionsSuccessful crisis communications during an emergency should aim to influence perceptions regarding the efficacy of recommended behaviors, the difficulties people may have in following advice, and perceptions about the cost of following recommended behaviors. Generic principles of crisis communication may need adaptation for national contexts. (Disaster Med Public Health Preparedness. 2013;7:65-74)

scholarly journals Reducing the Cost of Energy From Parabolic Trough Solar Power Plants

Solar Energy ◽  
2003 ◽  
Author(s):  
Henry Price ◽  
David Kearney
Keyword(s):  
Mojave Desert ◽  
Power Plants ◽  
Large Scale ◽  
Solar Power ◽  
Parabolic Trough ◽  
Cost Of Energy ◽  
Solar Power Plants ◽  
The Cost ◽  
The Impact ◽  
Fossil Fuel Power Plants

Parabolic trough solar technology is the most proven and lowest cost large-scale solar power technology available today, primarily because of the nine large commercial-scale solar power plants that are operating in the California Mojave Desert. However, no new plants have been built during the past ten years because the cost of power from these plants is more expensive than power from conventional fossil fuel power plants. This paper reviews the current cost of energy and the potential for reducing the cost of energy from parabolic trough solar power plant technology based on the latest technological advancements and projected improvements from industry and sponsored R&D. The paper also looks at the impact of project financing and incentives on the cost of energy.

scholarly journals Closed, Bused, Mixed: A Literature Review on the Impact of Rural School Closure; Effects of Busing on Rural Students; and Student Performance in Small Schools and Mixed-Age Classes

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Tatiana Zakharova
Keyword(s):  
Literature Review ◽  
Student Performance ◽  
Rural Schools ◽  
Large Scale ◽  
Small Schools ◽  
Rural School ◽  
School Closure ◽  
Rural Students ◽  
School Closures ◽  
The Impact

In 2000, Lauzon and Leahy completed a literature review on rural schools and educational reform, concluding that rural schools were indeed worth saving. In 2017, I conducted a literature review with the goal of offering an update to that article, investigating the post-2001 research on the impact of rural school closures; the effects of bussing of rural students to/from school; and student performance in small schools and mixed-grade classes. The results were mixed and contradictory, equal in their puzzling to the complexity of defining what is “rural” and what is “small school”. While some of the researchers continue to point out the unique place of local schools in rural settings, many also note the lack of large-scale studies into the impact of rural school closures, especially the impact on students – even "who pays and the price they pay, is always of interest" (bell hooks)… or is it?

scholarly journals Microcredit Impacts: Evidence from a Large-Scale Observational Study in Brazil

2021 ◽  
Author(s):  
Rafael Goldszmidt ◽  
Patrick Behr ◽  
Cesar Zucco ◽  
Anna-Katharina Lenz ◽  
Lauro Gonzalez ◽  
...  
Keyword(s):  
Propensity Score ◽  
Observational Study ◽  
Large Scale ◽  
Primary Data ◽  
Matched Sample ◽  
Development Bank ◽  
Access To Credit ◽  
Positive Effects ◽  
Employment Generation ◽  
The Impact

AbstractThis paper studies the impact of microcredit in Brazil. We use a propensity score matching on original primary data on business and personal outcomes to compare veteran clients of BNDES—Brazil’s largest government-owned development bank—to a matched sample of more recent clients. Based on administrative data as well as data from a survey of 2107 clients from the South and Northeast regions of Brazil, the findings show no significant impacts on income, employment generation, access to credit, and business formalization, except for the poorest Municipalities of the Northeast, where microcredit presented positive effects.

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