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VERY HIGH RESOLUTION INTERPOLATED CLIMATE SURFACES FOR GLOBAL LAND AREAS

We developed interpolated climate surfaces for global land areas (excluding Antarctica) at a spatial resolution of 30 arc s (often referred to as 1-km spatial resolution). The climate elements considered were monthly precipitation and mean, minimum, and...

The Ecological Role of Water-Column Microbes in the Sea*

Recently developed techniques for estimating bacterial biomass and productivity indicate that bacterial biomass in the sea is related to phytoplankton concentration and that bacteria utilise 10 to 50 % of carbon fixed by photosynthesis. Evidence is presented...

A framework for information systems architecture

With increasing size and complexity of the implementations of information systems, it is necessary to use some logical construct (or architecture) for defining and controlling the interfaces and the integration of all of the components of the system....

Chord: a scalable peer-to-peer lookup protocol for Internet applications

A fundamental problem that confronts peer-to-peer applications is the efficient location of the node that stores a desired data item. This paper presents Chord, a distributed lookup protocol that addresses this problem. Chord provides support for just...

Spatial registration and normalization of images

Karl J. Friston, John Ashburner, C. D. Frith, Jean-Baptiste Poline, J. D. Heather, R. S. J. Frackowiak

Plastic Solar Cells

Christoph J. Brabec, N.S. Sariciftci, Jan C. Hummelen

Iron oxide removal from soils and clays by a dithionite-citrate system buffered with sodium bicarbonate

The oxidation potential of dithionite (Na 2 S 2 O 4 ) increases from 0.37 V to 0.73 V with increase in pH from 6 to 9, because hydroxyl is consumed during oxidation of dithionite. At the same time the amount of iron oxide...

A Decision-Theoretic Generalization of On-Line Learning and an Application to Boosting

In the first part of the paper we consider the problem of dynamically apportioning resources among a set of options in a worst-case on-line framework. The model we study can be interpreted as a broad, abstract extension of the well-studied on-line prediction...

At risk : natural hazards, people's vulnerability, and disasters

Benjamin Goodwin Wisner, Piers Blaikie, Terry Cannon, Ian Davis

Microbial complexes in subgingival plaque.

S. S. Socransky, A. D. Haffajee, Cugini M, C. Smith, R. L. Kent

Herbivores and the Number of Tree Species in Tropical Forests

A high number of tree species, low density of adults of each species, and long distances between conspecific adults are characteristic of many low-land tropical forest habitats. I propose that these three traits, in large part, are the result of the action...

The Global City

Saskia Sassen

Tripartite Model of Anxiety and Depression: Psychometric Evidence and Taxonomic Implications

We review psychometric and other evidence relevant to mixed anxiety-depression. Properties of anxiety and depression measures, including the convergent and discriminant validity of self- and clinical ratings, and interrater reliability, are examined in...

A generalized inverse for matrices

A generalized inverse for matrices

Generalized autoregressive conditional heteroskedasticity

The present paper proposes a generalization of the canonical AutoRegressive Conditional Heteroskedasticity (ARCH) model by extending the conditional variance equation toward past conditional variances. The stationarity conditions and autocorrelation structure...

Integrated Optoelectronic Devices Based on Conjugated Polymers

An all-polymer semiconductor integrated device is demonstrated with a high-mobility conjugated polymer field-effect transistor (FET) driving a polymer light-emitting diode (LED) of similar size. The FET uses regioregular poly(hexylthiophene). Its performance...

Free Energy of a Nonuniform System. I. Interfacial Free Energy

It is shown that the free energy of a volume V of an isotropic system of nonuniform composition or density is given by : NV∫V [f 0(c)+κ(▿c)2]dV, where NV is the number of molecules per unit volume, ▿c the composition or density...

Food-Related Illness and Death in the United States

To better quantify the impact of foodborne diseases on health in the United States, we compiled and analyzed information from multiple surveillance systems and other sources. We estimate that foodborne diseases cause approximately 76 million illnesses,...

Sensor networks: evolution, opportunities, and challenges

Wireless microsensor networks have been identified as one of the most important technologies for the 21st century. This paper traces the history of research in sensor networks over the past three decades, including two important programs of the Defense...

The hitch-hiking effect of a favourable gene

SUMMARY When a selectively favourable gene substitution occurs in a population, changes in gene frequencies will occur at closely linked loci. In the case of a neutral polymorphism, average heterozygosity will be reduced to an extent which varies with...

A COMMON GENETIC VARIATION IN THE 3-UNTRANSLATED REGION OF THE PROTHROMBIN GENE IS ASSOCIATED WITH ELEVATED PLASMA PROTHROMBIN LEVELS AND AN INCREASE IN VENOUS THROMBOSIS

We have examined the prothrombin gene as a candidate gene for venous thrombosis in selected patients with a documented familial history of venous thrombophilia. All the exons and the 5′- and 3′-UT region of the prothrombin gene were analyzed by polymerase...

Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica

Jean Robert Petit, Jean Jouzel, D. Raynaud, N. I. Barkov, Jean Marc Barnola, Isabelle Basile, Michael L. Bender, J. Chappellaz, M. Davis, Gilles Delaygue, M. Delmotte, V. M. Kotlyakov, M. Legrand, Vladimir Ya. Lipenkov, Claude Lorius, Laurence Pépin, C. Ritz, E. Saltzman, M. Stievenard

The theory of open quantum systems

Heinz-Peter Breuer, Francesco Petruccione

RAPID PROCEDURE FOR DETECTION AND ISOLATION OF LARGE AND SMALL PLASMIDS

Procedures are described for the detection and isolation of plasmids of various sizes (2.6 to 350 megadaltons) that are harbored in species of Agrobacterium, Rhizobium, Escherichia, Salmonella, Erwinia, Pseudomonas, and Xanthomonas. The method utilized...

Acute Stressors and Cortisol Responses: A Theoretical Integration and Synthesis of Laboratory Research.

This meta-analysis reviews 208 laboratory studies of acute psychological stressors and tests a theoretical model delineating conditions capable of eliciting cortisol responses. Psychological stressors increased cortisol levels; however, effects varied...

This Time Is Different: Eight Centuries of Financial Folly

Throughout history, rich and poor countries alike have been lending, borrowing, crashing--and recovering--their way through an extraordinary range of financial crises. Each time, the experts have chimed, "this time is different"--claiming that the old...

The twin crises: The causes of banking and balance of payments problems

In the wake of the Mexican and Asian currency turmoil, the subject of financial crises have come to the forefront of academic and policy discussions. This paper analyzes the links between banking and currency crises. The authors find that problems in...

A Probabilistic Theory of Pattern Recognition

Luc Devroye, László Györfi, Gábor Lugosi

The causes of corruption: a cross-national study

Why is corruption—the misuse of public office for private gain— perceived to be more widespread in some countries than others? Different theories associate this with particular historical and cultural traditions, levels of economic development, political...

Adult T-cell leukemia: antigen in an ATL cell line and detection of antibodies to the antigen in human sera

Yorio Hinuma, Nagata K, Masao Hanaoka, M Nakai, T Matsumoto, Kinoshita K, S Shirakawa, Isao Miyoshi

Long-Range Corrected Hybrid Density Functionals with Damped Atom-Atom Dispersion Corrections

We report re-optimization of a recently proposed long-range corrected (LC) hybrid density functional [J.-D. Chai and M. Head-Gordon, J. Chem. Phys., 2008, 128, 084106] to include empirical atom–atom dispersion corrections. The resulting functional,...

KQML as an agent communication language

This paper describes the design of and experimentation with the Knowledge Query and Manipulation Language (KQML), a new language and protocol for exchanging information and knowledge. This work is part of a larger effort, the ARPA Knowledge Sharing Effort...

Cloning and characterization of inducible nitric oxide synthase from mouse macrophages

Nitric oxide (NO) conveys a variety of messages between cells, including signals for vasorelaxation, neurotransmission, and cytotoxicity. In some endothelial cells and neurons, a constitutive NO synthase is activated transiently by agonists that elevate...

LATTICE BOLTZMANN METHOD FOR FLUID FLOWS

▪ Abstract We present an overview of the lattice Boltzmann method (LBM), a parallel and efficient algorithm for simulating single-phase and multiphase fluid flows and for incorporating additional physical complexities. The LBM is especially useful...

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