Circular 35

Revised April 1991 by Grant E.M. Matheke, Patricia J. Wagner, and Patricia S. Holloway; Reprinted by Cooperative Extension Service, University of Alaska Fairbanks, and U.S.D.A. Cooperating. Publication 300C-00235A technique for growing high-yielding, everbearing strawberries with clear polyethylene (plastic) mulch and row covers has been developed at the Agricultural and Forestry Experiment Station at Fairbanks. This technique eliminates the long delay from planting to fruiting that occurs with other culture systems and it has created an interest in commercial production and an increased home-garden effort in Alaska. The production system involves planting nursery plants each season as early as possible through clear polyethylene mulch, using row covers for the early part o f the season. Using this technique, harvest begins about July 15 and extends until freeze-up, com pared to a production season from about July 10 to July 28 for hardy types o f strawberries such as Toklat or Pioneer. This system produces clean fruit, easy to pick and relatively free from fruit rot. The harvest season can be extended in the fall by again using the row covers for frost protection

Influences on the life-span of urban buildings: an examination of some locational, economic and social factors affecting the existing stock

This thesis undertakes an examination of the factors which influence the life-span of the existing stock of urban buildings. It is divided into three major parts: a theoretical examination of the principal factors, a further investigation of some of the most critical principal factors, and an empirical survey of the relationship between the critical factors and some of the existing stock in Edinburgh.In Part One, a brief introduction to existing research in this field is first described and a distinction drawn between prolonging the usefulness of the existing stock and intensifying its utilisation is made. The principal factors are then described and categorised and the effects of change of the factors is examined.Part Two examines more closely the social and economic factors which influence the life-span of the existing stock, as well as examining the fole of the building industry in adapting the stock to meet Chungking demands.The Third Part of the thesis consists of two related empirical investigations into the changing relationship between the critical factors and some of the existing stock in Edinburgh, as well as examining the validity of a number of theories about urban growth and change in the light of empirical data.Finally, the thesis develops a few major lines for further investiga¬ tion, not only of interest to this particular undertaking, but also to peripheral ventures as well

The arborescence-realization problem

AbstractA {0, 1}-matrix M is arborescence graphic if there exists an arborescence T such that the arcs of T are indexed on the rows of M and the columns of M are the incidence vectors of the arc sets of dipaths of T. If such a T exists, then T is an arborescence realization for M. This paper presents an almost-linear-time algorithm to determine whether a given {0, 1}-matrix is arborescence graphic and, if so, to construct an arborescence realization. The algorithm is then applied to recognize a subclass of the extended-Horn satisfiability problems introduced by Chandru and Hooker (1991)

Introduction

Children are sent to school and told they must learn. Adults do their learning on a mostly voluntary basis. School is traditionally intended to prepar children for adult life and to pass on the wisdom of previous generations. Adult education is traditionally intended to offer citizens the possibility of bettering themselves and of filling gaps in their initial schooling. School is life\u27s compulsory initiation. Adult learning has often been seen as life\u27s optional extra

Introduction

Children are sent to school and told they must learn. Adults do their learning on a mostly voluntary basis. School is traditionally intended to prepar children for adult life and to pass on the wisdom of previous generations. Adult education is traditionally intended to offer citizens the possibility of bettering themselves and of filling gaps in their initial schooling. School is life\u27s compulsory initiation. Adult learning has often been seen as life\u27s optional extra

Restoration of Aspen-Dominated Ecosystems in the Lake States

A reserve tree method (RTM) of harvesting was installed in six 70 to 75 year old aspen dominated stands to determine if retaining 10 to 15 dominant aspen per acre would decrease sucker density to facilitate restoration of a conifer component. A reserve shelterwood cut was applied to three additional stands to evaluate performance of white pine planted under 50% crown cover. After the first full growing season following harvest, 96% of the RTM harvested areas were stocked; sucker density averaged 27000 per acre versus 38.2 k per acre on a clearcut control, 41% greater. Basal diameter of dominant suckers averaged 0.45 inch, 28% greater than the control, and mean height was 60 inches, 33% greater. The control site had 3.1k stems per acre of associated commercial species versus 5.8 k on the RTM sites, an 87% difference. Four of the nine stands have been planted; first-year survival ranged from 75% to near 100%. The RTM shows promise for reducing sucker density, increasing their early growth, maintaining species diversity, and providing abundant regeneration of commercial species on a high proportion of the areas harvested. Early results indicate that both the RTM and shelterwood methods can facilitate restoring a component of native conifer species in these ecosystems

Electron acceleration by self-modulated laser wakefield in a relativistically self-guided channel

The relativistic self-focusing of an intense laser pulse (I ∼ 4×1018 W/cm2,I∼4×1018W/cm2, λ = 1 μm,λ=1μm, τ = 400 fsτ=400fs) in a gas jet 750 μm in length was observed using sidescattering imaging. A self-modulated laser wakefield was generated to accelerate self-trapped electrons. The energy distribution and transverse emittance of the electron beam changed due to the onset of the relativistic self-guiding. © 1997 American Institute of Physics.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87563/2/408_1.pd

A study of graft compatibility between two species of Euonymus

Typescript (photocopy) Thesis (M.S.)--Iowa State University, 1965. Includes bibliography