CiteWeb

WorldWeb citation database

Publications in 1987

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Current protocols in molecular biology

R E Kingston, David D. Moore, J. L. Smith

A new method of classifying prognostic comorbidity in longitudinal studies: development and validation.

The objective of this study was to develop a prospectively applicable method for classifying comorbid conditions which might alter the risk of mortality for use in longitudinal studies. A weighted index that takes into account the number and the seriousness...

The Positive and Negative Syndrome Scale (PANSS) for Schizophrenia

Stanley R. Kay, Abraham Fiszbein, Lewis A. Opler

The properties of gases and liquids

Robert C. Reid, J. M. Prausnitz, Bruce E. Poling

Politeness: Some universals in language usage

Penelope Brown, Stephen C. Levinson

Inhibited spontaneous emission in solid-state physics and electronics

Inhibited spontaneous emission in solid-state physics and electronics

Organic electroluminescent diodes

A novel electroluminescent device is constructed using organic materials as the emitting elements. The diode has a double‐layer structure of organic thin films, prepared by vapor deposition. Efficient injection of holes and electrons is provided from...

Human breast cancer : correlation of relapse and survival with amplification of the HER-2/neu oncogene

The HER-2/neu oncogene is a member of the erbB-like oncogene family, and is related to, but distinct from, the epidermal growth factor receptor. This gene has been shown to be amplified in human breast cancer cell lines. In the current study, alterations...

Educating the Reflective Practitioner

Building on the concepts of professional competence that he introduced in his classic The Reflective Practitioner, Schon offers an approach for educating professional in all areas that will prepare them to handle the complex and unpredictable problems...

An introduction to computing with neural nets

Artificial neural net models have been studied for many years in the hope of achieving human-like performance in the fields of speech and image recognition. These models are composed of many nonlinear computational elements operating in parallel and arranged...

An extraction method for measuring soil microbial biomass C

E. D. Vance, P. C. Brookes, D. S. Jenkinson

Discourse and social psychology : beyond attitudes and behaviour

`Potter and Wetherell have genuinely presented us with a different way of working in social psychology. The book's clarity means that it has the power to influence a lot of people ill-at-ease with traditional social psychology but unimpressed with (or...

Statecharts: A visual formalism for complex systems

We present a broad extension of the conventional formalism of state machines and state diagrams, that is relevant to the specification and design of complex discrete-event systems, such as multi-computer real-time systems, communication protocols and...

STRONG LOCALIZATION OF PHOTONS IN CERTAIN DISORDERED DIELECTRIC SUPERLATTICES

STRONG LOCALIZATION OF PHOTONS IN CERTAIN DISORDERED DIELECTRIC SUPERLATTICES

Chronology of fluctuating sea levels since the triassic

Advances in sequence stratigraphy and the development of depositional models have helped explain the origin of genetically related sedimentary packages during sea level cycles. These concepts have provided the basis for the recognition of sea level events...

MAPMAKER: an interactive computer package for constructing primary genetic linkage maps of experimental and natural populations.

With the advent of RFLPs, genetic linkage maps are now being assembled for a number of organisms in­ cluding both inbred experimental populations such as maize and outbred natural populations such as humans. Accurate construction of such genetic maps...

Financing Constraints and Corporate Investment

Most empirical models of investment rely on the assumption that firms are able to respond to prices set in centralized securities markets (through the "cost of capital" or "q"). An alternative approach emphasizes the importance of cash flow as a determinant...

Detection of postnatal depression. Development of the 10-item Edinburgh Postnatal Depression Scale.

The development of a 10-item self-report scale (EPDS) to screen for Postnatal Depression in the community is described. After extensive pilot interviews a validation study was carried out on 84 mothers using the Research Diagnostic Criteria for depressive...

Romantic Love Conceptualized as an Attachment Process

This article explores the possibility that romantic love is an attachment process--a biosocial process by which affectional bonds are formed between adult lovers, just as affectional bonds are formed earlier in life between human infants and their parents....

New perspectives in cell adhesion: RGD and integrins.

Rapid progress has been made in the understanding of the molecular interactions that result in cell adhesion. Many adhesive proteins present in extracellular matrices and in the blood contain the tripeptide arginine-glycine-aspartic acid (RGD) as their...

Superconductivity at 93 K in a New Mixed-Phase Y-Ba-Cu-O Compound System at Ambient Pressure

M. K. Wu, J.R. Ashburn, C.J. Torng, P.H. Hor, R. L. Meng, L. Gao, Z.J. Huang, Yang Wang, C. W. Chu

Endothelium-derived relaxing factor produced and released from artery and vein is nitric oxide

The objective of this study was to determine whether nitric oxide (NO) is responsible for the vascular smooth muscle relaxation elicited by endothelium-derived relaxing factor (EDRF). EDRF is an unstable humoral substance released from artery and vein...

Self-Discrepancy: A Theory Relating Self and Affect.

This article presents a theory of how different types of discrepancies between self-state representations are related to different kinds of emotional vulnerabilities. One domain of the self (actual; ideal; ought) and one standpoint on the self (own; significant...

Recognition-by-Components: A Theory of Human Image Understanding

The perceptual recognition of objects is conceptualized to be a process in which the image of the input is segmented at regions of deep concavity into an arrangement of simple geometric components, such as blocks, cylinders, wedges, and cones. The fundamental...

Bone histomorphometry : Standardization of nomenclature, symbols, and units

A. Michael Parfitt, Marc K. Drezner, John A. Kanis, Hartmut H. Malluche

STABLE ISOTOPES IN ECOSYSTEM STUDIES

and B J Peterson, Brian Fry

A logic for default reasoning

The need to make default assumptions is frequently encountered in reasoning about incompletely specified worlds. Inferences sanctioned by default are best viewed as beliefs which may well be modified or rejected by subsequent observations. It is this...

Concurrency control and recovery in database systems

Philip A. Bernstein, Vassco Hadzilacos, Nathan Goodman

Quadratic configuration interaction. A general technique for determining electron correlation energies

A general procedure is introduced for calculation of the electron correlationenergy, starting from a single Hartree–Fock determinant. The normal equations of (linear) configuration interaction theory are modified by introducing new terms which are quadratic...

High-efficiency transformation of mammalian cells by plasmid DNA.

We describe a simple calcium phosphate transfection protocol and neo marker vectors that achieve highly efficient transformation of mammalian cells. In this protocol, the calcium phosphate-DNA complex is formed gradually in the medium during incubation...

The precursor of Alzheimer's disease amyloid A4 protein resembles a cell-surface receptor

Jie Kang, H. Lemaire, Axel Unterbeck, J. Michael Salbaum, Colin L. Masters, Karl-Heinz Grzeschik, Gerd Multhaup, Konrad Beyreuther, Benno Müller-Hill

A versatile camera calibration technique for high-accuracy 3D machine vision metrology using off-the-shelf TV cameras and lenses

A new technique for three-dimensional (3D) camera calibration for machine vision metrology using off-the-shelf TV cameras and lenses is described. The two-stage technique is aimed at efficient computation of camera external position and orientation relative...

The case research strategy in studies of information systems

This article defines and discusses one of these qualitative methods - the case research strategy. Suggestions are provided for researchers who wish to undertake research employing this approach. Criteria for the evaluation of case research are established...

Appropriating the Returns from Industrial Research and Development

Richard C. Levin, Alvin K. Klevorick, Richard R. Nelson, Sidney G. Winter

Decreased heart rate variability and its association with increased mortality after acute myocardial infarction

A high degree of heart rate (HR) variability is found in compensated hearts with good function, whereas HR variability can be decreased with severe coronary artery disease, congestive heart failure, aging and diabetic neuropathy. To test the hypothesis...

Universal chemical assay for the detection and determination of siderophores

A universal method to detect and determine siderophores was developed by using their high affinity for iron(III). The ternary complex chrome azurol S/iron(III)/hexadecyltrimethylammonium bromide, with an extinction coefficient of approximately 100,000...

Some philosophical problems from the standpoint of artificial intelligence

A computer program capable of acting intelligently in the world must have a general representation of the world in terms of which its inputs are interpreted. Designing such a program requires commitments about what knowledge is and how it is obtained....

A fast algorithm for particle simulations

We restrict our attention in this paper to the case where the potential (or force) at a point is a sum of pairwise An algorithm is presented for the rapid evaluation of the potential and force fields in systems involving large numbers of particles interactions....

Dynamics of the dissipative two-state system

Anthony J. Leggett, Sreejit Chakravarty, A. T. Dorsey, Matthew Fisher, Anupam Garg, Wilhelm Zwerger

Validation of the Five-Factor Model of Personality Across Instruments and Observers

Two data sources—self-reports and peer ratings—and two instruments—adjective factors and questionnaire scales—were used to assess the five-factor model of personality. As in a previous study of self-reports {McCrae & Costa, 1985b), adjective factors...

Speech Genres and Other Late Essays

Martin Melaver, M. M. Bakhtin, Vern W. McGee, Caryl Emerson, Michael Holquist

Electronic markets and electronic hierarchies

By reducing the costs of coordination, information technology will lead to an overall shift toward proportionately more use of markets—rather than hierarchies—to coordinate economic activity.

Turbulence statistics in fully developed channel flow at low Reynolds number

A direct numerical simulation of a turbulent channel flow is performed. The unsteady Navier-Stokes equations are solved numerically at a Reynolds number of 3300, based on thc mean centreline velocity and channel half-width, with about 4 x los grid points...

[21] Specific synthesis of DNA in vitro via a polymerase-catalyzed chain reaction

This chapter discusses the specific synthesis of deoxyribonucleic acid (DNA) in vitro through the medium of a polymerase-catalyzed chain reaction. A method whereby a nucleic acid sequence can be exponentially amplified in vitro is described in the...

Structure of the human class I histocompatibility antigen, HLA-A2.

Pamela J. Bjorkman, Mark A. Saper, B. Samraoui, W.S Bennett, Jack L. Strominger, D. C. Wiley

An Intrusion-Detection Model

A model of a real-time intrusion-detection expert system capable of detecting break-ins, penetrations, and other forms of computer abuse is described. The model is based on the hypothesis that security violations can be detected by monitoring a system's...

THE PEOPLE MAKE THE PLACE

Benjamin Schneider

Expected stock returns and volatility

This paper examines the relation between stock returns and stock market volatility. We find evidence that the expected market risk premium (the expected return on a stock portfolio minus the Treasury bill yield) is positively related to the predictable...

Evaluation of a Tetrazolium-based Semiautomated Colorimetric Assay: Assessment of Chemosensitivity Testing

Drug sensitivity assays were performed using a variation of a colori metrie [3-{4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT)1 assay on V79, CHO-AuxBl, CH"C5, NCI-H460, and NCIH249 cell lines following optimization of experimental conditions...

Inbreeding Depression and its Evolutionary Consequences

Deborah Charlesworth, Brian Charlesworth

Closed-form solution of absolute orientation using unit quaternions

Finding the relationship between two coordinate systems using pairs of measurements of the coordinates of a number of points in both systems is a classic photogrammetric task. It finds applications in stereophotogrammetry and in robotics. I present here...

Principal Component Analysis

Svante Wold, Kim Esbensen, Paul Geladi

On Ethics and Economics

In this elegant critique, Amartya Sen argues that welfare economics can be enriched by paying more explicit attention fo ethics, and that modern ethical studies can also benefit from a closer contact with economics. Predicitive and descriptive economics...

Bilirubin is an antioxidant of possible physiological importance

Bilirubin, the end product of heme catabolism in mammals, is generally regarded as a potentially cytotoxic, lipid-soluble waste product that needs to be excreted. However, it is here that bilirubin, at micromolar concentrations in vitro, efficiently scavenges...

CpG Islands in vertebrate genomes

Although vertebrate DNA is generally depleted in the dinucleotide CpG, it has recently been shown that some vertebrate genes contain CpG islands, regions of DNA with a high G + C content and a high frequency of CpG dinucleotides relative to the bulk genome....

The Pricing of Options on Assets with Stochastic Volatilities

One option-pricing problem which has hitherto been unsolved is the pricing of European call on an asset which has a stochastic volatility. This paper examines this problem. The option price is determined in series form for the case in which the stochastic...

Why a Diagram is (Sometimes) Worth Ten Thousand Words

systems that are informationally equivalent and that can be characterized as sentential or diagrammatic. Sentential representations are sequential, like the propositions in a text. Dlogrammotlc representations ore indexed by location in a plane. Diogrommatic...

Dimensions of Consumer Expertise

The purpose of this article is to review basic empirical results from the psychological literature in a way that provides a useful foundation for research on consumer knowledge. A conceptual organization for this diverse literature is provided by two...

Dystrophin: The protein product of the duchenne muscular dystrophy locus

The protein product of the human Duchenne muscular dystrophy locus (DMD) and its mouse homolog (mDMD) have been identified by using polyclonal antibodies directed against fusion proteins containing two distinct regions of the mDMD cDNA. The DMD protein...

Age dating and the orbital theory of the ice ages: Development of a high-resolution 0 to 300,000-year chronostratigraphy

Using the concept of “orbital tuning,” a continuous, high-resolution deep-sea chronostratigraphy has been developed spanning the last 300,000 yr. The chronology is developed using a stacked oxygen-isotope stratigraphy and four different orbital tuning...

Practical Issues in Structural Modeling

Practical problems that are frequently encountered in applications of covariance structure analysis are discussed and solutions are suggested. Conceptual, statistical, and practical requirements for structural modeling are reviewed to indicate how basic...

Rapid and efficient site-specific mutagenesis without phenotypic selection.

This chapter discusses the use of standard and well-established procedures of rapid and efficient site-specific mutagenesis without phenotypic selection in conjunction with an unusual template. This method takes advantage of a strong biological selection...

Analysis of factors controlling soil organic matter levels in Great Plains grasslands

William J. Parton, D. S. Schimel, C. V. Cole, Dennis Ojima

Gene flow and the geographic structure of natural populations

There is abundant geographic variation in both morphology and gene frequency in most species. The extent of geographic variation results from a balance of forces tending to produce local genetic differentiation and forces tending to produce genetic homogeneity....

Interrater Reliability of a Modified Ashworth Scale of Muscle Spasticity

We undertook this investigation to determine the interrater reliability of manual tests of elbow flexor muscle spasticity graded on a modified Ashworth scale. We each independently graded the elbow flexor muscle spasticity of 30 patients with intracranial...

Pretense and Representation: The Origins of "Theory of Mind"

One of the major developments of the second year of human life is the emergence of the ability to pretend. A child's knowledge of a real situation is apparently contradicted and distorted by pretense. If, as generally assumed, the child is just beginning...

The Rhetoric of Economics

Steven E. Rhoads, Deirdre N. McCloskey

Silhouettes: a graphical aid to the interpretation and validation of cluster analysis

A new graphical display is proposed for partitioning techniques. Each cluster is represented by a so-called silhouette, which is based on the comparison of its tightness and separation. This silhouette shows which objects he well within their cluster,...

Implicit Memory: History and Current Status

Memory for a recent event can be expressed explicitly, as conscious recollection, or implicitly, as a facilitation of test performance without conscious recollection. A growing number of recent studies have been concerned with implicit memory and its...

Stock Market Prices Do Not Follow Random Walks: Evidence from a Simple Specification Test

In this paper, we test the random walk hypothesis for weekly stock market returns by comparing variance estimators derived from data sampled at different frequencies. The random walk model is strongly rejected for the entire sample period (1962-1985)...

Firefly luciferase gene: structure and expression in mammalian cells.

J R de Wet, Keith V. Wood, DeLuca M, Donald R. Helinski, Subramani S

The Resonating Valence Bond State in La2CuO4 and Superconductivity

The oxide superconductors, particularly those recently discovered that are based on La2CuO4, have a set of peculiarities that suggest a common, unique mechanism: they tend in every case to occur near a metal-insulator transition into an odd-electron insulator...

The Nature of Phonological Processing and Its Causal Role in the Acquisition of Reading Skills

Three bodies of research that have developed in relative isolation center on each of three kinds of phonological processing: phonological awareness, awareness of the sound structure of language; phonological receding in lexical access, receding written...

Intraspecific Phylogeography: The Mitochondrial DNA Bridge Between Population Genetics and Systematics

John C. Avise, Jonathan Arnold, R. M. Ball, Eldredge Bermingham, A Reeb, Nancy C. Saunders

Cocaine receptors on dopamine transporters are related to self-administration of cocaine

Although cocaine binds to several sites in the brain, the biochemical receptor mechanism or mechanisms associated with its dependence producing properties are unknown. It is shown here that the potencies of cocaine-like drugs in self-administration studies...

A theory of diagnosis from first principles

Suppose one is given a description of a system, together with an observation of the system's behaviour which conflicts with the way the system is meant to behave. The diagnostic problem is to determine those components of the system which, when assumed...

How to prove yourself: practical solutions to identification and signature problems

In this paper we describe simple identification and signature schemes which enable any user to prove his identity and the authenticity of his messages to any other user without shared or public keys. The schemes are provably secure against any known or...

Time Series Regression with a Unit Root

This paper studies the random walk in a general time series setting that allows for weakly dependent and heterogeneously distributed innovations. It is shown that simple least squares regression consistently estimates a unit root under very general conditions...

A Statistical Model for Indoor Multipath Propagation

The results of indoor multipath propagation measurements using 10 ns, 1.5 GHz, radarlike pulses are presented for a medium-size office building. The observed channel was very slowly time varying, with the delay spread extending over a range up to about...

Arithmetic coding for data compression

The state of the art in data compression is arithmetic coding, not the better-known Huffman method. Arithmetic coding gives greater compression, is faster for adaptive models, and clearly separates the model from the channel encoding.

AGGREGATION AND LINEARITY IN THE PROVISION OF INTERTEMPORAL INCENTIVES

We consider the problem of providing incentives over time for an agent with constant absolute risk aversion. The optimal compensation scheme is found to be a linear function of a vector of N accounts which count the number of times that each of the N...

The short-form McGill Pain Questionnaire

Summary A short form of the McGill Pain Questionnaire (SF-MPQ) has been developed. The main component of the SF-MPQ consists of 15 descriptors (11 sensory; 4 affective) which are rated on an intensity scale as 0 = none, 1 = mild, 2 =...

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