Rediscovering Our Values: Dayton Through My Brown Eyes

A first-person narrative about life in Dayton, Ohio, composed as part of the Facing Project, a nationwide storytelling initiative

Radiative Corrections to Chargino Production with Polarized Beams

We show that radiative corrections to chargino production in electron-positron annihilation with polarized beams can be large especially in the case of right handed electrons. In addition, there is some dependency on the squark masses that allows us to extract information about the squark spectrum from the chargino production.Comment: 4 pages, including 4 figures. Talk given at Linear Collider Workshop 2000--LCWS, Fermilab, Chicago, October 24-28, 200

Radiatively Corrected Chargino Pair Production at LEP2

One-loop radiative corrections to the production cross section of a pair of light charginos in e+e- colliders are calculated within the MSSM. Top and bottom quarks and squarks are considered in the loops, and they are renormalized using the MS-bar scheme. If the center of mass energy is equal to 192 GeV, positive corrections typically of 10% to 15% are found when the squark mass parameters are equal to 1 TeV.Comment: 6 pages, including 5 figures. Latex. Talk given by M.A.D. at the International Workshop "Beyond the Standard Model: From Theory to Experiment", 13--17 October 1997, Valencia, Spai

The relative value of different estuarine nursery areas in North Carolina for transient juvenile marine fishes

Offshore winter-spawned fishes dominate the nekton of south-eastern United States estuaries. Their juveniles reside for several months in shallow, soft bottom estuarine creeks and bays called primary nursery areas. Despite similarity in many nursery characteristics, there is, between and within species, variability in the occupation of these habitats. Whether all occupied habitats are equally valuable to individuals of the same species or whether most recruiting juveniles end up in the best habitats is not known. If nursery quality varies, then factors controlling variation in pre-settlement fish distribution are important to year-class success. If nursery areas have similar values, interannual variation in distribution across nursery creeks should have less effect on population sizes or production. I used early nursery period age-specific growth and mortality rates of spot (Leiostomus xanthurus) and Atlantic croaker (Micropogonias undulatus)—two dominant estuarine fishes—to assess relative habitat quality across a wide variety of nursery conditions, assuming that fish growth and mortality rates were direct reflections of overall physical and biological conditions in the nurseries. I tested the hypothesis that habitat quality varies for these fishes by comparing growth and mortality rates and distribution patterns across a wide range of typical nursery habitats at extreme ends of two systems. Juvenile spot and Atlantic croaker were collected from 10 creeks in the Cape Fear River estuary and from 18 creeks in the Pamlico Sound system, North Carolina, during the 1987 recruitment season (mid-March–mid-June). Sampled creeks were similar in size, depth, and substrates but varied in salinities, tidal regimes, and distances from inlets. Spot was widely distributed among all the estuarine creeks, but was least abundant in the creeks in middle reaches of both systems. Atlantic croaker occurred in the greatest abundance in oligohaline creeks of both systems. Instantaneous growth rates derived from daily otolith ages were generally similar for all creeks and for both species, except that spot exhibited a short-term growth depression in the upriver Pamlico system creeks—perhaps the result of the long migration distance of this species to this area. Spot and Atlantic croaker from upriver oligohaline creeks exhibited lower mortality rates than fish from downstream polyhaline creeks. These results indicated that even though growth was similar at the ends of the estuaries, the upstream habitats provided conditions that may optimize fitness through improved survival

Age, Growth, and Mortality of the Banded Drum, Larimus fasciatus (Sciaenidae) in North Carolina

Age, growth, and mortality were examined for Larimus fasciatus collected off North Carolina from September 1975 through September 1976. Fish were aged using length-frequencies, scales, and to a lesser extent otoliths. Problems encountered with aging a rare, short lived, temperate fish were discussed. The maximum size observed was 182 mm SL, and 86% of the specimens were \u3c 128 mm SL. The oldest banded drum reached age 4. Mean weighted back-calculated sizes (scale data) for age classes 1·4 were 75.2 mm, 145.4 mm, 161.8 mm, and 170.8 mm, respectively. The von Bertalanffy growth equation was: Lt = 178 (1·e-0.98(t + 0.38)), which predicted sizes at ages 1-4 of 132 mm, 161 mm, 172 mm and 176 mm SL, respectively. Observed, back-calculated, and von Bertalanffy growth curves agreed closely and indicated the fastest growth was in young fish during the spring and summer. The von Bertalanffy growth coefficient (K = 0.98) suggested that maximum size was attained quickly. Instantaneous (Z) and total annual (A) mortality rates were 1.44 and 76%, respectively. Weight-length and total length-standard length conversions were derived