Problems Associated with Soils Stabilization. in the Vicinity of Point Barrow, Alaska

Point Barrow is located in the northernmost extremity of the Arctic Coastal Plain (Figure 1). The coastal plain is an undulating surface of low relief, the major relief being in the vicinity of the major northflowing rivers. The general lack of relief is largely due to the fact that the area is a recently elevated segment of the continental shelf, and thus, it has the low relief characteristics of most recently emerged coastal plains

A Drumlinoid Hill, Story County, Iowa

This is a brief report on an interesting hill occurring on the Cary drift plain in central Story County. The hill is situated in sections 7 and 8, T. 84 N., R. 22 W., about four miles north of Nevada. It forms a conspicuous, isolated prominence in an area of several square miles of relatively featureless drift plain. The hill is about two miles long, and one-quarter mile wide. The long axis is directed northwest-southeast with an essentially even crest line. The maximum height of the hill above the adjacent plain is about 60 feet as shown on a profile along the road between sections 7 and 8. (See Figure 1) Our attention was first directed to the hill because of its distinctly lighter color as observed on air photos, its isolated occurrence, and its position with respect to drainage

Shubnikov de Haas effect in the metallic state of Na0.3_{0.3}CoO2_2

Shubnikov de Haas oscillations for two well defined frequencies, corresponding respectively to areas of 0.8 and 1.36% of the first Brillouin zone (FBZ), were observed in single crystals of Na$_{0.3}$CoO$_2$. The existence of Na superstructures in Na$_{0.3}$CoO$_2$, coupled with this observation, suggests the possibility that the periods are due to the reconstruction of the large Fermi surface around the $\Gamma$ point. An alternative interpretation in terms of the long sought-after $\epsilon_g^\prime$ pockets is also considered but found to be incompatible with existing specific heat data.Comment: 5 pages 4 figure

Phenomenology of the normal state in-plane transport properties of high-TcT_c cuprates

In this article, I review progress towards an understanding of the normal state (in-plane) transport properties of high-$T_c$ cuprates in the light of recent developments in both spectroscopic and transport measurement techniques. Against a backdrop of mounting evidence for anisotropic single-particle lifetimes in cuprate superconductors, new results have emerged that advocate similar momentum dependence in the transport decay rate $\Gamma$({\bf k}). In addition, enhancement of the energy scale (up to the bare bandwidth) over which spectroscopic information on the quasiparticle response can be obtained has led to the discovery of new, unforeseen features that surprisingly, may have a significant bearing on the transport properties at the dc limit. With these two key developments in mind, I consider here whether all the ingredients necessary for a complete phenomenological description of the anomalous normal state transport properties of high-$T_c$ cuprates are now in place.Comment: 31 pages, 10 figure

Possible co-existence of local itinerancy and global localization in a quasi-one-dimensional conductor

In the chain compound PrBa$_2$Cu$_4$O$_8$ localization appears simultaneously with a dimensional crossover in the electronic ground state when the scattering rate in the chains exceeds the hopping rate between the chains. Here we report the discovery of a large, transverse magnetoresistance in PrBa$_2$Cu$_4$O$_8$ in the localized regime. This result suggests a novel form of localization whereby electrons retain their metallic (quasi-one-dimensional) character over a microscopic length scale despite the fact that macroscopically, they exhibit localized (one-dimensional) behavior.Comment: 4 pages, 4 Figure

Evaluation of children's centres in England: strand 2 - baseline survey of families using children's centres in the most disadvantaged areas

This is the final version of the report. Available from the Department for Education via the link in this recorThe evaluation of children’s centres in England is a large scale, six year study that looks at Sure Start children’s centres (SSCCs) in the most disadvantaged areas of England. These are centres that were set up in the first two phases of the programme. The evaluation, from a survey of families who were using children’s centres when their child was 9- to 18-months-old, will provide a very detailed picture of children’s centre services. This includes how effective they are when they use different approaches in their management and when delivering services and activities for parents and children. It also looks at the cost of delivering different types of services