12,029 research outputs found
SIZE AND BAG LIMITS IN RECREATIONAL FISHERIES: THEORETICAL AND EMPIRICAL ANALYSIS
Size and bag limits are among the most common forms of regulations for recreational fisheries. In this paper, we theoretically study and compare the short- and long-term impacts of these policies on individual anglers and fish stocks. Particular attention is paid to the issue of release mortality, which can have important consequences for policy effectiveness. Theoretically, we show the conditions under which these policies will be successful in achieving biological objectives. Implications for recreation demand analysis are discussed. We also study these policies using a simulation model of various policy combinations for the Gulf of Mexico red snapper fishery.Resource /Energy Economics and Policy,
Low-frequency rear quadrant noise of a turbojet engine with exhaust duct muffling
A J-65 engine was run with a tuned sound-absorbing exhaust duct to study the internal and jet components of rear quadrant noise. Full muffler, hard wall duct, and regular production engine configurations were tested. The jet exhaust velocities were subsonic. The use of the exhaust muffler extended the relation between the jet noise and the eighth power of the jet velocity to lower velocities than for the hard wall duct
"Economic Aid to Post-conflict Countries: A Methodological Critique of Collier and Hoeffler"
This paper retests the analysis of "Aid Policy and Growth in Post-Conflict Societies," by Paul Collier and Anke Hoeffler (October 2002 and forthcoming in European Economic Review). It finds that their data and analysis do not support their conclusions and policy recommendations on the optimal timing and amounts of aid. These conclusions depend on very few observations (13 for the period of peace-onset, 13 for years 4 to 7 when a growth spurt is said to make aid particularly effective, and 8 for the period when aid should taper off); are vulnerable to the same methodological misspecifications identified in the Burnside and Dollar approach on which this analysis is based; and are not grounded in any theoretical formulation about the special relation between aid and growth in post-conflict conditions. Conventional econometric procedures are often not followed; recoding the sample to exclude cases that are not civil wars reduces the effect of aid on growth in post-civil war countries to less than half of what they claim; and the difference with the relationship for "normal" countries becomes negligible (0.26 percentage points), although it depends on identification of the sample. Their claims on the poverty-efficiency of aid are assumed, not analysed. The confidentiality of their policy measure (CPIA) prevented testing the aid-policy relationship.Economic aid Post-conflict Methodology
Infrared Observations of novae in the SOFIA era
Classical novae inject chemically enriched gas and dust into the local
inter-stellar medium (ISM). Abundances in the ejecta can be deduced from
infrared (IR) forbidden line emission. IR spectroscopy can determine the
mineralogy of grains that grow in nova ejecta. We anticipate the impact that
NASA's new Stratospheric Observatory for Infrared Astronomy (SOFIA) will have
on future IR studies of novae.Comment: To appear in the proceedings of "Physics of Evolved Stars 2015 - A
conference dedicated to the memory of Olivier Chesneau
The circumstellar dust of "Born-Again" stars
We describe the evolution of the carbon dust shells around Very Late Thermal
Pulse (VLTP) objects as seen at infrared wavelengths. This includes a 20-year
overview of the evolution of the dust around Sakurai's object (to which Olivier
made a seminal contribution) and FG Sge. VLTPs may occur during the endpoint of
as many as 25% of solar mass stars, and may therefore provide a glimpse of the
possible fate of the Sun.Comment: To appear in the proceedings of "Physics of Evolved Stars 2015 - A
conference dedicated to the memory of Olivier Chesneau
ECONOMIC EFFICIENCY OF ALTERNATIVE BYCATCH-REDUCTION POLICIES AND BYCATCH REDUCTION DEVICES
This paper examines the ability of two new policies to reduce bycatch of red snapper by the shrimp fishery in the Gulf of Mexico: Fractional License and Fractional Gear Programs, as proposed by Townsend, reduce bycatch by reducing the effort levels of shrimp vessels. The policies are evaluated both theoretically and using a simulation model, and they are compared with the current regulatory policy requiring shrimp vessels to use bycatch reduction devices to rebuild red snapper stocks. We find that either a FL program or a FG program could reduce effort and the related problem of bycatch resulting in improving red snapper stocks, while at the same time increasing economic welfare in the fishery.Resource /Energy Economics and Policy,
Disparate Impact Under the ADEA: Applicants Need not Apply
Part I of this Note addresses the current debate on this topic, illustrated through case law in the Eleventh Circuit, the Seventh Circuit, and a recent federal district court ruling in the Ninth Circuit. Part II analyzes the unambiguous, textual differences between the various subsections of the ADEA as well as the textual differences between Title VII and the ADEA. This Note explores these textual arguments through an analysis of the statutes and interpretative case law and concludes that, as drafted, the disparate impact theory of age discrimination should not be available to non- employee job applicants. Part III illustrates why utilizing a disparate impact theory of recovery in age discrimination cases is futile for non-employee job applicants, demonstrates why the current position held by the Equal Employment Opportunity Commission (EEOC), the administrative agency responsible for the ADEA’s enforcement, should not be determinative on this matter, and proposes a new pathway to support older job applicants in their quests for employment. This Note advocates for Congress, through legislative action, and the EEOC, through its rulemaking responsibilities, to develop incentives and education initiatives for employers to eliminate the unconscious biases and stereotypes often encumbering older workers
- …