Two-axis controller Patent

Two axis flight controller with potentiometer control shafts directly coupled to rotatable ball member

Toward a Working Model for Community Organizing in the 1970\u27s

The authors critique the service delivery model for solving community problems and stress the value of citizens developing their capabilities to attack the source of problems. A model for grass roots, autonomous, multi-issue citizens organizations is presented

Reproduction and food habits of the lined seahorse, Hippocampus erectus (Teleostei: Syngnathidae) of Chesapeake Bay, Virginia.

The reproductive and feeding biology of the lined seahorse, Hippocampus erectus, was studied inChesapeake Bay. Seahorses are monogamous, and males incubate the eggs received from femalesin a closed brood pouch (= marsupium). Females do not play any parental care after mating. Totalsex ratio and the operational sex ratio was strongly skewed toward females. Males and females hadsimilar number of eggs/embryos and hydrated oocytes, respectively. The number of eggs/embryosfound in the male brood pouch varied from 97 to 1,552 (fish from 80 to 126 mm TL), whereas thenumber of hydrated oocytes in female varied from 90 to 1,313 (fish from 60 to 123 mm TL). Both,the number of eggs/embryos and hydrated oocytes were better linearly correlated to total weight thanto total length. The small snout and mouth size limits the feeding of the lined seahorse to small preysize. Amphypods were the predominant food items found in the guts, especially Ampithoe longimana,Gammarus mucronatus, and Caprella penantis. The lined seahorse is not abundant in ChesapeakeBay, but keeps a breeding population which is probably brought inside the bay by currents on driftingvegetation. Chances to find a partner may be difficult because of its low abundance, due to turbidwaters, and its sedentary behavior

Changes in Couples’ Earnings Following Parenthood and Trends in Family Earnings Inequality

The growing economic similarity of spouses has contributed to rising income inequality across households. Explanations have typically centered on assortative mating, but recent work has argued that changes in women’s employment and spouses’ division of paid work have played a more important role. We expand this work to consider the critical turning point of parenthood in shaping couples’ division of employment and earnings. Drawing on three U.S. nationally representative surveys, we examine the role of parenthood in spouses’ earnings correlations between 1968-2015 and ask to what extent changes in spouses’ earnings correlations are due to: (1) changes upon entry into marriage (assortative mating), (2) changes between marriage and parenthood, (3) changes following parenthood, and (4) changes in women’s employment. Our findings show that increases in the correlation between spouses’ earnings prior to 1990 came largely from changes between marriage and first birth, but after 1990 have come almost entirely from changes following parenthood. In both instances, changes in women’ employment are key to increasing earnings correlations. Changes in assortative mating played little role in either time period. An assessment of the aggregate-level implications points to the growing significance of earnings similarity after parenthood for rising income inequality across families

A study of the archibenthic and abysobenthic fishes of Deep Water Dump Site 106 and the adjacent area : completion report

Deep water dtnnp site 106 (DWD 106) is located 145 km off the coast of New Jersey and is bounded by the latitudes of ! 38°40\u27 and 39°00\u27N and longitudes 72°00\u27 and 72°30\u27W. The depth of DWD 106 varies from about 1300 min the northeast corner to • 2700 min the southwest (Fig. 1). Most of the site is deeper than 2000 m. Within DWD 106 is a smaller dwnp site that has been in use for many years for industrial wastes and munitions. Due south of DWD 106 is an additional dwnpsite (Fig. 1) at which the Atomic Energy Commission reported dumping radioactive wastes (rad site). The purpose of this report is to describe the fish fauna in the area of DWD 106 and to provide information on the ecology of dominant species

Scalable pattern recognition for large-scale scientific data mining

Our ability to generate data far outstrips our ability to explore and understand it. The true value of this data lies not in its final size or complexity, but rather in our ability to exploit the data to achieve scientific goals. The data generated by programs such as ASCI have such a large scale that it is impractical to manually analyze, explore, and understand it. As a result, useful information is overlooked, and the potential benefits of increased computational and data gathering capabilities are only partially realized. The difficulties that will be faced by ASCI applications in the near future are foreshadowed by the challenges currently facing astrophysicists in making full use of the data they have collected over the years. For example, among other difficulties, astrophysicists have expressed concern that the sheer size of their data restricts them to looking at very small, narrow portions at any one time. This narrow focus has resulted in the loss of ``serendipitous`` discoveries which have been so vital to progress in the area in the past. To solve this problem, a new generation of computational tools and techniques is needed to help automate the exploration and management of large scientific data. This whitepaper proposes applying and extending ideas from the area of data mining, in particular pattern recognition, to improve the way in which scientists interact with large, multi-dimensional, time-varying data

Shaft Sinking at the Nevada Test Site, U1h Shaft Project

The U1h Shaft Project is a design/build subcontract to construct one 6.1 meter (m) (20 feet (ft)) finished diameter shaft to a depth of 321.6 m (1,055 ft.) at the Nevada Test Site. Atkinson Construction was subcontracted by Bechtel Nevada to construct the U1h Shaft for the U.S. Department of Energy. The project consists of furnishing and installing the sinking plant, construction of the 321.6 m (1,055 ft.) of concrete lined shaft, development of a shaft station at a depth of 297.5 m (976 ft.), and construction of a loading pocket at the station. The outfitting of the shaft and installation of a new hoist may be incorporated into the project at a later date. This paper will describe the design phase, the excavation and lining operation, shaft station construction and the contractual challenges encountered on this project