energy consumption and economic growth nexus in tanzania an ardl bounds testing approach abstract in this paper we examine the intertemporal causal relationship between energy consumption and economic growth in tanzania during the period of 1971 2006 unlike the majority of the previous studies we employ the newly developed autoregressive distributed lag ardl bounds testing approach by pesaran et al 2001 bounds testing approaches to the analysis of level relationships journal of applied econometrics 16 289 326 to examine this linkage we also use two proxies of energy consumption namely total energy consumption per capita and electricity consumption per capita the results of the bounds test show that there is a stable long run relationship between each of the proxies of energy consumption and economic growth the results of the causality test on the other hand show that there is a unidirectional causal flow from total energy consumption to economic growth and a prima facie causal flow from electricity consumption to economic growth overall the study finds that energy consumption spurs economic growth in tanzania

the nexus between sectoral fdi and institutional quality empirical evidence from pakistan abstractthis study investigates short and long run bidirectional causality between institutional quality and sectoral level fdi in pakistan by using the ardl technique the results confirm that long run bidirectional causality exists between institutional quality and aggregate fdi the in depth sectoral level fdi analysis substantiates the presence of long run bidirectional causality between institutional quality and fdi in services and manufacturing sectors while no long run causality is observed between institutional quality and fdi inflows in primary sector furthermore the results in the study reveal short run bidirectional causality only between institutional quality and manufacturing fdi and report insignificant short run causal link between institutional quality and fdi in primary and services sectors the overall findings of the study suggest that in the long run institutional quality attract fdi and fdi inflows particularly to manufacturing and services sectors significantly enhance the qual

a permanent effect of temporary immigration on economic growth immigration can help to lessen the burden of ageing for the welfare states of most western economies to show this we develop a decomposition framework for gross domestic product gdp per capita which deals with the impact of both ageing and immigration on economic growth using a vector error correction model vecm for the netherlands during 1973 to 2009 we demonstrate the empirical relevance of some crucial interactions between elements of that decomposition the conclusion is that even temporary immigration may help to alleviate the ageing problem through a positive long term contribution to employment wages and gdp per capita as long as the immigrants are able to participate in the labour force in tandem with the native population unfavourable short term effects should be avoided through a gradual phasing in of immigration policies

safety first criteria and their measures of risk a cardinal measure of risk which represents the safety first criteria is defined the functional form of that measure is determined for a subgroup of risk averse agents that do not have money illusion an empirical illustration of possible applications of that measure shows a method of identifying the subgroup of agents for which a given alternative dominates the others in a group of risky alternatives when none of these alternatives dominates any of the others according to the first and the second criteria of stochastic dominance

reimbursement schemes for hospitals the impact of case and firm characteristics we contribute to the debate on high powered versus low powered incentives in regulation by studying their heterogeneous impacts on different subpopulations using data from the introduction of a hi

demographic shocks and human capital accumulation in the uzawa lucas model abstract the uzawa lucas growth model is modified to incorporate unskilled labour as a distinct factor from human capital the modified model is then used to discuss the effects of demographic shocks on optimal growth and human capital investment

the tragedy of the commons in cote d ivoire agriculture empirical evidence and implications for evaluating trade policies expansion of cultivated land diminishes the extent of forestlands or reduces the length of fallow periods and hence reduces the amount of natural vegetation the increase in land under cultivation has a direct output increasing effect at the cost of reducing natural capital and agricultural productivity the evidence for western cote d ivoire is consistent with and provides an explanation for the declining agricultural productivity observed in sub saharan africa during the past few decades this article uses a theoretical model to determine the level of land cultivation that maximizes village income using data from cote d ivoire for 1985 87 an important part of the land is under common property usually at the village level the results show that farmers do not internalize even a small fraction of the external cost of biomass in their land allocation decisions the lack of internalization of the social cost of the biomass resource leads to large income losses at the village level as much as 14 percent of village income these losses are many times larger than the usual estimates for conventional distortions

risks and returns from soil conservation evidence from low income farms in the philippines abstract this paper examines risks and returns associated with soil conservation on hillside farms in the philippines stochastic efficiency analysis is combined with a heteroskedastic regression model to assess the impacts of contour hedgerows on low income corn farms regression analysis indicates that over time contour hedgerows can improve yields up to 15 compared with conventional practices the analysis also provides weak support for a hypothesis that hedgerows are variance reducing however results show that the reduction in yield variability afforded by hedgerows is modest and that yield variability may increase by as much as 5 as hedgerow intensity rises tests for stochastic dominance show that compared with the conventional tillage system hedgerows do not constitute an unambiguously dominant production strategy stochastic efficiency with respect to a function is used to identify a range for the coefficient of relative risk aversion within which hedgerows dominate conventional tillage results suggest this range would be rather high hedgerows dominate the conventional cropping strategy only for decision makers with relative risk aversion coefficients in the range 3 5 5 implications for soil conservation adoption in low income settings are discussed

soil conservation as an investment in land abstract most studies on the problem of optimal soil conservation have analyzed soil conservation measures as being time limited in their effect this paper extends previous analyses of the soil conservation decision by allowing farmers to make investments in soil conservation structures such as terraces bundles and ditches it shows that the main conclusions arrived at in previous studies remain valid the long term effects of unanticipated permanent changes in prices and discount rates may go either way independent of whether conservation measures are time limited or have lasting effects on the soil base

an economic model of soil conservation by introducing soil depth and soil loss into a simple model of agricultural production this paper seeks to determine when the private path of erosion differs from the socially optimal path considering the depletion of soil only and abstracting from the environmental disruption caused by erosion the paper argues that under most institutional arrangements the social and private rates of erosion are the same the paper concludes that public policy should be directed toward reducing erosion only when it leads to significant pollution externalities

environmental externalities in traditional agriculture and the impact of trade liberalization the case of ghana abstract this paper provides a framework for the evaluation of trade policies that explicitly considers the effects of such policies on the environmental resources biomass in doing this we estimate the effects of biomass as a factor of agricultural production and test the hypothesis that farmers efficiently exploit biomass a resource held in common property the main findings are i biomass is an important factor of production in ghanian agriculture ii the biomass resource is exploited beyond the socially optimal level iii a deepening of trade liberalization is likely to induce further losses of biomass and deforestation and iv national income is likely to fall in response to further trade liberalization

utility consistent discrete continuous choices in soil conservation a utility consistent model of participation and participation intensity choices for a voluntary soil conservation program is developed a modified form of roy s identity is used to derive a two equation system that links the discrete dichotomous choice participation and the continuous choice intensity to the same utility function the model corrects for selectivity bias that arises in single equation approaches an application to a filter strip program in two counties in illinois and michigan demonstrates that different factors affect responses to the program across the sample regions estimated willingness to accept payments for participation in the program suggest policy impacts are not uniform across locations

energy consumption prices and economic growth in three ssa countries a comparative study in this paper we examine the causal relationship between energy consumption and economic growth in three sub saharan african countries namely south africa kenya and congo drc we incorporate prices as an intermittent variable in a bivariate setting between energy consumption and economic growth thereby creating a simple trivariate framework using the ardl bounds testing procedure we find that the causality between energy consumption and economic growth varies significantly across the countries under study the results show that for south africa and kenya there is a unidirectional causal flow from energy consumption to economic growth however for congo drc it is economic growth that drives energy consumption these findings have important policy implications insofar as energy conservation policies are concerned in the case of congo drc for example the implementation of energy conservation policies may not significantly affect economic growth because the country s economy is not entirely energy dependent however for south africa and kenya there is a need for more energy supply augmentations in order to cope with the long run energy demand in the short run however the two countries should explore more efficient and cost effective sources of energy in order to address the energy dependency problem

consumption risk farm characteristics and soil conservation adoption among low income farmers in the philippines abstract this paper investigates patterns of soil conservation adoption among low income farmers in the philippines a model is presented that focuses attention on the role of assets and consumption risk in influencing soil conservation adoption decisions results from a reduced form probit model of adoption are reported these econometric findings indicate that patterns of soil conservation adoption reflect relative risk considerations in addition to farm and household characteristics farm size tenure security labor availability and land quality all exhibit a positive association with soil conservation adoption in contrast controlling on these and other household characteristics the probability of adoption falls as consumption risk rises these results underscore a need for greater sensitivity among policymakers to the role of consumption risk in influencing soil conservation decisions in low income settings

adoption of agricultural innovations in developing countries a survey this paper reviews various studies which have provided a description and possible explanation to patterns of innovation adoption in the agricultural sector the survey points out that the tendency of many studies to consider innovation adoption in dichotomous terms adoption nonadoption may not be appropriate in many cases where the actual decisions are defined over a more continuous range more attention needs to be given to the socio cultural and institutional environment in area studies so that their interrelation with economic factors affecting adoption can be inferred the presence of several interrelated innovations is another aspect that needs to be considered more carefully in future research since a number of simultaneous decisions may be involved furthermore the possibility of regular sequential patterns in adopting components of a new technological package should be specifically addressed in future studies finally the impact of differential adoption rates on land holding distribution merits attention in future research

poverty consumption risk and soil conservation abstract this paper studies the impact of poverty and uninsured consumption risk on incentives to invest in soil conservation a stochastic dynamic model is used to show how consumption risks and costs of investment influence incentives to adopt soil conservation measures on low income farms the model is calibrated using production data from hillside farms in the philippines simulations with the model demonstrate how the value of soil conservation depends on the cost of investing the risk characteristics of the soil conservation method and differences among households in capacity to bear risk model predictions are compared with empirical adoption patterns as described by a probit model and nonparametric kernel regressions of adoption probability empirical findings show how differences in farm size tenure security risk exposure and access to credit help to explain patterns of soil conservation adoption implications for policy are discussed

soil erosion and labor shortages in the andes with special reference to bolivia 1953ndash 1991 implications for conservation with development abstract many claims in support of soil conservation policies have been flawed by excessively deterministic reasoning and unwarranted spatial overaggregation a case study remedying these flaws demonstrates that soil erosion in the bolivian andes worsened during recent decades 1953 91 due to changes in production as peasants shifted labor from conservation techniques to nonfarm employment these findings reflect in three policy issues concerning sustainable resource management oriented toward development conservation with development are discussed a environmental consequences and economic causes of increased nonfarm employment by part time peasant farmers b environment related aspects of technology innovation and technique modifications in labor scarce peasant production and c the environmental perceptions of peasant farmers in participatory development planning

economic factors in farmer adoption of agroforestry patterns observed in western kenya abstract a study of agroforestry adoption by 3 000 project participants in siaya and south nyanza districts in kenya supports three hypotheses 1 1 historical increases in tree domestication and management intensity are responses to declining supply of uncultivated tree resources increased subsistence and commercial demand for tree products and perceived risks of ecological degradation adoption of agroforestry is most likely where consistent with economic incentives for land use change 2 2 high variability in individual farmers tree growing strategies reflects differences in resources and livelihood strategies and household level returns to agroforestry relative to alternative options for meeting specific objectives 3 3 farmers reduce risks associated with new agroforestry practices through incremental adoption and adaptation and cost and risk reducing modifications in technology design

how do hospitals respond to price changes this paper examines hospital responses to changes in diagnosis specific prices by exploiting a 1988 policy reform that generated large price changes for 43 percent of medicare admissions i find hospitals responded primarily by upcoding patients to diagnosis codes with the largest price increases this response was particularly strong among for profit hospitals i find little evidence hospitals increased the volume of admissions differentially for diagnoses subject to the largest price increases despite the financial incentive to do so neither did they increase intensity or quality of care in these diagnoses suggesting hospitals do not compete for patients at the diagnosis level

consequences of a food security strategy for economic welfare income distribution and land degradation the philippine case like many developing countries the philippines pursues a food security strategy in which self sufficiency and price stabilization feature prominently in addition to their widely debated welfare effects food policies based on price and trade restrictions may also accelerate land degradation by promoting expansion of relatively erosive grain crops the paper explores the welfare and environmental implications of food policies first with a simple heuristic model then with an applied general equilibrium model comparing market restrictions with technical progress as alternative food policy strategies the authors find that the former increase land degradation and reduce welfare moreover anti poverty and distributional benefits often claimed for such interventions may be illusory

do changes in oil prices affect welfare programs evidence from kern county abstract in this paper the intertemporal causal relationship between oil prices and welfare programs in kern county is studied using monthly data between 1999 7 and 2016 8 results from the autoregressive distributed lag ardl bounds testing approach show that there is stable long run equilibrium relationship between calfresh caseloads oil prices and unemployment they also show that adjustment in calfresh participation due to changes in oil prices and unemployment is slow and a 10 increase in unemployment led to a 3 3 increase in calfresh enrollment results from a modified granger causality method indicated causality running from unemployment to calworks and no causality from oil prices to calworks participation the girf confirmed that calworks is more responsive to changes in unemployment than to oil price shocks the fevdc results demonstrated that contributions of the oil price shocks in explaining variations in calworks were negligible

liability dollarization exchange market pressure and fear of floating empirical evidence for turkey the objective of this article is to examine the relationship between liability dollarization and the exchange market pressure emp in turkey within an autoregressive distributed lag ardl and granger causality framework using monthly data from 1991 12 to 2006 08 the findings suggest that there exists a long term equilibrium relationship between emp and liability dollarization where liability dollarization granger causes emp both in the short and long run with no evidence of reverse causality this suggests that the predominance of foreign currency liabilities in the banks balance sheets in turkey induces a selling pressure in the exchange market as well as a fear of floating

optimal soil conservation and the reform of agricultural pricing policies abstract soil degradation is often blamed for the poor performance of agriculture in developing economies so too are policies which keep the prices of both outputs and inputs artificially low some economists have argued that pricing reforms will encourage soil depletion others say that such reforms will encourage soil conservation to evaluate these claims this paper develops models of the optimal control of soil erosion and soil fertility it is shown that the effect could go either way but that there are strong reasons for suspecting that pricing reforms will not affect soil conservation dramatically

links between rural poverty and the environment in developing countries asset categories and investment poverty abstract this paper presents a framework for analyzing the links between poverty and the environment in rural areas of developing countries it introduces the concept of investment poverty and relates it to other measures of poverty in analysis of these links the notion of poverty is examined in the context of categories of assets and categories of environment change with particular focus on farm household income generation and investment strategies as determinants of the links the strength and direction of the poverty environment links are shown to differ even invert depending on the composition of the assets held by the rural poor and the types of environmental problems they face policy strategies need to focus on conditioning variables that affect market development community wealth infrastructure household asset distribution and the affordability and appropriateness of natural resource conservation technologies

impacts of tenancy arrangements on investment and efficiency evidence from pakistan in this article we use farm level data from the punjab province in pakistan to analyze the impact of three tenancy contracts on investment in soil improving and productivity enhancing measures and farm productivity a multivariate tobit model that accounts for potential substitutability and complementarity of investment options as well as endogeneity of tenure arrangements was employed in the empirical analysis our empirical results indicate that land tenure arrangements influence farmers decisions to invest in soil improving and productivity enhancing measures in particular owner cultivators with secured tenancy arrangements were found to be more likely to invest in soil improving and productivity enhancing measures compared to those on leased contracts we also find that output per hectare was highest on land cultivated by owners and lowest on land under sharecropping tenancy lending support to the marshallian inefficiency hypothesis

economics of erosion control and seed fertilizer technologies for hillside farming in honduras abstract with population growth still at very high rates and large scale commercial farmers and cattle ranchers owning much of the more fertile valley land small scale farmers are concentrated on increasingly marginal steeply sloping hillsides in central america the continuing soil erosion and land degradation in these low input staple crop production hillside farming systems lead many to be pessimistic about increasing the agricultural incomes of these farmers however this study shows that the appropriate combination of improved technologies and agricultural policy or alternative production diversification strategies can improve the incomes of small scale hillside farmers in southern honduras by over 50 the technology components considered are stone walls and ditches combined with living tree barriers to prevent erosion of the hillsides and a package of improved sorghum seed seed treatment and modest doses of nitrogenous fertilizer a whole farm mathematical programming framework is used to determine the potential farm level income effects of the soil conservation and seed fertilizer technologies the main conclusion is that erosion control devices and yield increasing crop varieties and fertilizer are an effective technology introduction strategy for the erosion prone hillside landholdings found in many areas of central america if policy actions or diversification strategies for disposal of surplus grain are found which are effective in reducing the risk of low income from cereal price reductions in high production years adoption of the improved technologies is shown to be profitable for small scale farmers another benefit not explicitly considered would be to slow the very rapid growth of urban poverty in these countries sensitivity analysis results indicated that neither risk aversion nor the increased availability of crop land or initial cash have any substantial effects on the predicted adoption level of the improved technologies or on their income impacts for these farmers

migration and labour markets in oecd countries a panel cointegration approach this article examines the interaction between immigration and the host labour market of 14 organization for economic co operation and development oecd countries using nonstationary panel data methodology we estimate a trivariate vector error correction model vecm and derive causality tests to simultaneously assess the long and short term macroeconomic impact of newcomers on wages and unemployment levels in the host country the results suggest that an increase of migrants is likely to increase wages in the destination countries in the short run but to increase them in the long run there is no evidence of adverse effects on unemployment due to immigration in short and long term except for anglo saxon countries in the short term our findings also show that immigration is conditioned by levels of unemployment and wages especially in anglo saxon countries

causality between economic growth and immigration an ardl bounds testing approach abstract this paper aims to investigate the causal relationship between immigration and per capita economic growth using the ardl approach to cointegration we find evidence of long run causality from per capita economic growth to immigration but not vice versa

exchange rate volatility economic growth nexus in uganda abstractthe global financial crisis has disrupted trade and capital flows in most developing economies resulting in an increased volatility of exchange rates we develop an autoregressive distributed lag model to investigate the effect of exchange rate volatility on economic growth in uganda using data spanning the period 1960 2011 we find that exchange rate volatility positively affects economic growth in uganda in both the short run and the long run however in the short run political instability negatively moderates the exchange rate volatility economic growth nexus these results are robust to alternative specifications of the economic growth model

regulation competition and liberalization in many countries throughout the world regulators are struggling to determine whether and how to introduce competition into regulated industries this essay examines the complexities involved in the liberalization process while stressing the importance of case specific analyses this essay distinguishes liberalization policies that generally are procompetitive from corresponding anticompetitive liberalization policies

impact of terrorism on tourism in turkey empirical evidence from turkey this article aims at investigating the causal impact of terrorist attacks on the tourism industry in turkey based on the autoregressive distributed lag ardl bounds testing procedure for the period between 1986 and 2006 the ardl bounds test reveals that tourism is in a long run equilibrium level relationship with terrorism the evidence obtained from the long run and short run parameter estimates indicates the existence of a negative causal effect of terrorism on tourism

the economics of immigration this literature review concerns the impact of immigration on the economy of the host country focusing on the experience of the united states the emphasis is on the period from the 1970s to the 1990s the author shows that research earlier in this period generally concluded that the economic effects of immigration were positive but that more recent research on later migrations have generally concluded that immigration may be having an adverse effect on the earnings of native unskilled workers and be placing an increased burden on welfare programs the importance of such economic analysis for the formulation of appropriate migration policies is stressed

bootstrapping the autoregressive distributed lag test for cointegration we propose a bootstrap autoregressive distributed lag ardl test by applying the appropriate bootstrap method some weaknesses underlying the pesaran shin and smith ardl bounds test are addresse

migration remittances and agricultural productivity in china in our paper we have used the new economics of labor migration framework to trace the complex linkages that exist among migration remittances and agricultural productivity in china constraints in the operation of on farm labor and capital or insurance markets or institutions provide households with a motivation to migrate and distort on farm operations when labor leaves in our household sample the net impact of migration and remittances on maize production is negative excerpt

a note on soil depth failing markets and agricultural pricing abstract due to implementation of structural adjustment programs prices of agricultural products have increased in many developing countries from an environmental point of view it is an open question whether these price increases stimulate sustainable agriculture in the context of a simple model that includes labour intensive investments in soil conservation it is demonstrated that rising prices for agricultural outputs unambiguously increase soil conservation in the steady state with imperfect labour markets the reverse effect may occur giving rise to a conflict between agricultural reform programs and soil conservation

economic incentives and natural resource management among small scale farmers addressing the missing link small scale farmers face numerous challenges to invest in natural resource management practices the problems are interlinked with such perverse economic problems as high transaction costs and risk rooted in the lack of comprehensive institutional and organizational services to farmers for risk reduction and incentive creation failure to address such a missing link undermines success in natural resource management this paper ponders the importance of such a missing link and proposes analytic framework that explicitly integrates the economics of natural resource management into institutional and organizational analysis the framework features the instrumentality of integrated institutional and organizational innovation to create opportunities and incentives to small scale farmers to encourage investment in natural resource management practices

a note on soil depth failing markets and agricultural pricing comment abstract bulte and van soest bulte e van soest d 1999 a note on soil depth failing markets and agricultural pricing journal of development economics 58 245 254 argue that higher agricultural output prices result in greater soil conservation when labor markets function well but have ambiguous effects when labor markets are absent the latter result is not attributable to labor market failure but rather occurs whenever labor supply is less than perfectly elastic consistent with the more general model presented here empirical evidence from a number of developing countries suggests that well functioning labor markets are associated with decreases in investment in soils

an exogeneity test for a simultaneous equation tobit model with an application to labor supply a test of weak exogeneity in the simultaneous equation tobit model is proposed and illustrated using a female labour supply model estimated using cross section data the test statistic can be simply output from any standard tobit maximum likelihood package and is asymptotically efficient the procedure provides consistent estimators for the simultaneous tobit model whose asymptotic covariance matrix is a simple extension of the usual tobit formula we also provide the lagrange multiplier test of weak exogeneity this abstract was borrowed from another version of this item