13,967 research outputs found
International sources of fisheries information to enhance fish production, poverty alleviation and food security in Nigeria and developing Nigerian Fisheries and Aquatic Sciences Database
The paper viewed the decline in information provision in Nigeria to poor library development, which could be attributed to poor funding. The consequence is that current journal and books are not available in nigerian fisheries libraries. Information which can be regarded as the first factor of production on which other factors like land, labour and capital depend, can only be provided at the right time when libraries are better founded. For now if there must be increase in fish production, poverty alleviation and food security in Nigeria, our fisheries scientists and policy makers will have to rely on international sources of information using the advantage of internet connectivity. Some of such sources discussed in this paper are ASFA, AGORA, FAO DOAJ, FISHBASE, IAMSLIC, INASP, INASP-PERI, INASP-AJOL, ODINAFRICA, SIFAR, WAS, and ABASFR. However, reliance on international sources must not be at the total neglect of harnessing nigerian fisheries information. For the Nigerian Fisheries and Aquatic Sciences Database being developed by NIFFR to attain an international status like those enumerated above, scientists and publishers are requested to take the pain of depositing copies of their publications with NIFFR for inclusion in the Databas
Demand analysis for Nigerian fisheries
This paper reviews available past fisheries statistics data and examines the basis of derivation of the estimates and concludes that much needs to be done to establish reliable fisheries data based on well defined methodology. Subsequently, fish consumption data for the ten-year-period 1971-1979 were related to the yearly population that consumes the fis
The consumption-tightness puzzle
This paper introduces a labor force participation choice into a labor market matching model embedded in a dynamic stochastic general equilibrium set-up with production and savings. The participation choice is modelled as a tradeoff between forgoing the expected benefits of being search active and engaging in costly labor market search. The model induces a symmetry in firmsâ and workersâ search decision since both sides of the labor market vary search effort at the extensive margins. We show that this set-up is of considerable analytical convenience and that it gives rise to a linear relationship between labor market tightness and the marginal utility of consumption. We refer to the latter as the âconsumption - tightness puzzleâ because (a) it gives rise to a number of counterfactual implications, and (b) it is a robust implication of theory. Amongst the counterfactual implications are very low volatility of tightness, procyclical unemployment, and a positively sloped Beveridge curve. These implications all derive from procyclical variations in participation rates that follow from allowing for the extensive search margin
Environment, Health and Wealth: Towards an Analysis of Municipal Solid Waste Management in Ota, Ogun State, Nigeria
The management of municipal solid waste is one of the challenges facing the developing countries because
governments, institutions, and private sectors have given solid waste management low priority and ignoring
the implication it has on the general public. This is characterized by inefficient collection methods,
insufficient coverage of the collection system and improper disposal. This paper presents the current solid
waste management method adopted in Ado-Odo Ota local government and its associated challenges. Four
locations (Iganmode area, Joju area, Ota market and toll gate area) were selected. These sites are points
where the waste bins are located. A field work that involves the characterization and types of the waste
generated, and frequency of collection from each site was carried out. A representative sample of 280 kg
was used for the waste characterization and the result shows that about 64% of the wastes are recyclable
with lots of organic waste that comprises of food and agricultural waste which can be used as compost. The
only dump site in Ota was visited in order to obtain useful information concerning the present state of solid
waste management. The study revealed that there is presently no investment made to the existing
development plan to introduce a modern waste management system. The study suggests new approach
that could be used by institutions and government agencies for municipal solid waste management to
achieve sustainable and effective sanitation
Approximations to the two-hole ground state of the Hubbard-Anderson model: a numerical test
Several resonating-valence-bond-type states are being considered as an approximation of the two-hole ground state of the two-dimensional Hubbard-Anderson model. These states have been carefully constructed by Traa and Caspers with such algebraic properties, as to optimise different contributions of the Hubbard-Anderson hamiltonian. In this paper, the different contributions to their energies are calculated for lattices with sizes from 8 Ă 8 up to 16 Ă 16 and periodic boundary conditions, using a variational Monte-Carlo method. We show which state is lowest in energy and, more important, why this is so. In accordance with the optimal state from this tested set, we propose a bound state. It will be shown that this state is indeed the most stable state
Does Antidumping Use Contribute to Trade Liberalization? An Empirical Analysis
Some supporters of antidumping have argued that this procedure serves as a kind of "safety valve" for protectionist pressure.This paper examines whether there is any empirical evidence that the use of antidumping actions has contributed to tariff reductions in a sample of 35 developing and developed countries.There is very little evidence that such a relationship might exist among the 27 developing countries in the sample.We do find some weak but inconsistent evidence for antidumping helping liberalization efforts in the experience of developed countries, which have been the traditional users of antidumping.Antidumping;Trade Liberalization;Commercial Policy
Incomplete cost pass-through under deep habits
A number of empirical studies document that marginal cost shocks are not fully passed through to prices at the firm level and that prices are substantially less volatile than costs. We show that in the relative-deep-habits model of Ravn, Schmitt-Grohe, and Uribe (2006), firm-specific marginal cost shocks are not fully passed through to product prices. That is, in response to a firm-specific increase in marginal costs, prices rise, but by less than marginal costs leading to a decline in the firm-specific markup of prices over marginal costs. Pass-through is predicted to be even lower when shocks to marginal costs are anticipated by firms. In our model, unanticipated firm-specific cost shocks lead to incomplete pass-through (or a decline in markups) of about 20 percent and anticipated cost shocks are associated with incomplete pass-through of about 50 percent. The model predicts that cost pass-through is increasing in the persistence of marginal cost shocks and U-shaped in the strength of habits. The relative-deep-habits model implies that conditional on marginal cost disturbances, prices are less volatile than marginal costs
The macroeconomics of subsistence points
This paper explores the macroeconomic consequences of preferences displaying a subsistence point. It departs from the existing related literature by assuming that subsistence points are specific to each variety of goods rather than to the composite consumption good. We show that this simple feature makes the price elasticity of demand for individual goods procyclical. As a result, markups behave countercyclically in equilibrium. This implication is in line with the available empirical evidence
Nitrous oxide in coastal waters
We determined atmospheric and dissolved nitrous oxide (N2O) in the surface waters of the central North Sea, the German Bight, and the Gironde estuary. The mean saturations were 104 ± 1% (central North Sea, September 1991), 101 ± 2% (German Bight, September 1991), 99 ± 1% (German Bight September 1992), and 132% (Gironde estuary, November 1991). To evaluate the contribution of coastal areas and estuaries to the oceanic emissions we assembled a compilation of literature data. We conclude that the mean saturations in coastal regions (with the exception of estuaries and regions with upwelling phenomena) are only slightly higher than in the open ocean. However, when estuarine and coastal upwelling regions are included, a computation of the global oceanic N2O flux indicates that a considerable portion (approximately 60%) of this flux is from coastal regions, mainly due to high emissions from estuaries. We estimate, using two different parameterizations of the air-sea exchange process, an annual global sea-to-air flux of 11â17 Tg N2O. Our results suggest a serious underestimation of the flux from coastal regions in widely used previous estimates
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