Works Published in 2000

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Displaying works 61 - 80 of 145 in total

Sorted by most recent date added to the index first, which may not be the same as publication date order.

2000 journal article

The role of protein flexibility in molecular motor function: Coupled diffusion in a tilted periodic potential

SIAM JOURNAL ON APPLIED MATHEMATICS, 60(3), 842–867.

By: T. Elston* & C. Peskin

author keywords: biomolecular motors; Brownian ratchet; protein flexibility; stochastic processes; diffusion equation
TL;DR: This paper evaluates the influence of the elasticity of the tether on the speed of an imperfect Brownian ratchet in two limiting cases: (1) large diffusion coefficient of the motor and (2) large potential barrier against reverse motion at each r... (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Testing for differences in survival with delayed ascertainment

BIOMETRICS, 56(1), 145–153.

By: J. Fine & A. Tsiatis*

author keywords: ascertainment bias; counting process; logrank statistic; Martingale; U statistic
MeSH headings : Acquired Immunodeficiency Syndrome / drug therapy; Acquired Immunodeficiency Syndrome / immunology; Acquired Immunodeficiency Syndrome / mortality; Anti-HIV Agents / therapeutic use; Biometry; CD4 Lymphocyte Count; Clinical Trials as Topic / statistics & numerical data; Humans; Survival Analysis
TL;DR: A class of test statistics that extends the usual class of U statistics is proposed that can be more powerful than the current practice when differential ascertainment is present and to illustrate the potential loss of information when lagging follow‐up to control for ascertainment delays, an AIDS clinical trial is re analyzed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Separation of phylogenetic and functional associations in biological sequences by using the parametric bootstrap

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 97(7), 3288–3291.

UN Sustainable Development Goal Categories
10. Reduced Inequalities (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Semiparametric regression for periodic longitudinal hormone data from multiple menstrual cycles

BIOMETRICS, 56(1), 31–39.

By: D. Zhang n, X. Lin* & M. Sowers*

author keywords: nonparametric regression; penalized likelihood; periodic smoothing spline; restricted maximum likelihood; test for equality of functions
MeSH headings : Biometry; Chi-Square Distribution; Female; Humans; Likelihood Functions; Longitudinal Studies; Menstrual Cycle / blood; Models, Statistical; Progesterone / blood; Regression Analysis; Stochastic Processes
TL;DR: A scaled chi‐squared test for the equality of two nonparametric time functions is developed and it is shown that all model parameters can be easily obtained by fitting a linear mixed model. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Relationships of sweet, bitter, and roasted peanut sensory attributes with carbohydrate components in peanuts

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 48(3), 757–763.

author keywords: Arachis hypogaea L.; flavor; carbohydrate; components; roasted peanut; sweet; bitter
MeSH headings : Arachis / chemistry; Carbohydrates / analysis; Humans; Taste
TL;DR: Within two market-types it is possible to improve the efficiency of selection for sweetness and roasted peanut quality by assaying for total carbohydrates, and the greatest efficiency would occur in the fastigiate market-type and then the runner. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Reduced order model compensator control of species transport in a CVD reactor

OPTIMAL CONTROL APPLICATIONS & METHODS, 21(4), 143–160.

By: G. Kepler n, H. Tran n & H. Banks n

author keywords: linear quadratic control; proper orthogonal decomposition; reduced order model; chemical vapour deposition; Dirichlet boundary control
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Protein flexibility and the correlation ratchet

SIAM Journal on Applied Mathematics, 61(3), 842–867.

By: T. Elston & C. Peskin

Source: NC State University Libraries
Added: August 6, 2018

2000 review

New frontiers in the study of dispersal and spatial analysis of epidemics caused by species in the genus Phytophthora

[Review of ]. ANNUAL REVIEW OF PHYTOPATHOLOGY, 38, 541-+.

By: J. Ristaino n & M. Gumpertz n

author keywords: dispersal; epidemiology; management; molecular epidemiology; spatial pattern analysis; Phytophthora diseases
TL;DR: This chapter discusses the mechanisms of dispersal of members of this important genus and describes several methods that can be used to statistically analyze data for which spatial coordinates are known and testing spatial autocorrelation for binary data or continuous data, semivariograms, and regression models for spatial data. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Isozymatic and morphological diversity in the races of maize of Mexico

ECONOMIC BOTANY, 54(1), 43–59.

By: J. Sanchez*, M. Goodman n & C. Stuber n

author keywords: Zea mays L.; isozymes; genetic diversity; genetic differentiation
TL;DR: A very high level of variation among and within the Mexican races was found, however, more than 65% of the alleles found in the accessions studied are rare, occurring at frequencies below 0.01. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Investigations into genotypic variations of peanut carbohydrates

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 48(3), 750–756.

author keywords: Arachis hypogaea L.; sugars; genetic variation; environmental variation
MeSH headings : Arachis / genetics; Carbohydrates / analysis; Genotype; Humans; Taste
TL;DR: The observed high genotypic variation in carbohydrate components is similar to the high genotype variation observed for the sweetness attribute in roasted peanuts, which raises the question regarding possible interrelationships. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Host effect on genetic variation of Marssonina brunnea pathogenic to poplars

THEORETICAL AND APPLIED GENETICS, 100(3-4), 614–620.

author keywords: Aigeiros; Leuce; Marssonina brunnea; poplar; RAPD; Tacamahaca
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Dynamical analysis of density-dependent selection in a discrete one-island migration model

MATHEMATICAL BIOSCIENCES, 164(1), 1–15.

author keywords: selection; migration; genotype; density-dependence; bifurcation
MeSH headings : Alleles; Animals; Emigration and Immigration; Genetic Variation / genetics; Geography; Humans; Models, Genetic; Nonlinear Dynamics; Polymorphism, Genetic / genetics; Population Dynamics; Selection, Genetic
TL;DR: A system of non-linear difference equations is used to model the effects of density-dependent selection and migration in a population characterized by two alleles at a single gene locus, and properties for a genetically important class of equilibria associated with complete dominance in fitness are described. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

An economic analysis of binomial sampling for weed scouting

WEED SCIENCE, 48(1), 53–60.

By: D. Krueger n, G. Wilkerson n, H. Coble n & H. Gold n

author keywords: Glycine max; soybeans; negative binomial distribution; HERB
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

A proposal to standardize soil/solution herbicide distribution coefficients

WEED SCIENCE, 48(1), 75–88.

By: J. Weber n, G. Wilkerson n, H. Linker n, J. Wilcut n, R. Leidy n, S. Senseman*, W. Witt*, M. Barrett* ...

author keywords: readers are referred to the WSSA Herbicide Handbook and Supplement for the chemical names of the herbicides; K-d; K-f; K-oc; herbicide sorption; herbicide retention; herbicide binding; herbicide movement; leaching potential
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Variance effective population size for mitochondrial genes

Russian Journal of Genetics, 36(8), 965–967.

By: D. Zaykin & A. Pudovkin

Source: NC State University Libraries
Added: August 6, 2018

2000 article

Threshold dependence of mortality effects for fine and coarse particles in Phoenix, Arizona

Smith, R. L., Spitzner, D., Kim, Y., & Fuentes, M. (2000, August). JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, Vol. 50, pp. 1367–1379.

MeSH headings : Aged; Air Pollution / adverse effects; Arizona / epidemiology; Epidemiologic Studies; Female; Humans; Male; Models, Theoretical; Mortality / trends; Particle Size; Regression Analysis; Seasons; Sensitivity and Specificity; Urban Population
TL;DR: The PM effect is highest in spring and summer, when the anthropogenic concentration of coarse PM is lowest as determined by a principal components analysis, and consideration of nonlinear effects can lead to real changes of interpretation and raises the possibility of seasonal effects associated with the chemical composition of PM. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

The nucleotide-replacement spectrum under somatic hypermutation exhibits microsequence dependence that is strand-symmetric and distinct from that under germline mutation

JOURNAL OF IMMUNOLOGY, 164(4), 1971–1976.

MeSH headings : Adenine / immunology; Animals; Base Composition; Base Sequence; DNA Mutational Analysis / methods; DNA Mutational Analysis / statistics & numerical data; Gene Rearrangement; Germ-Line Mutation / immunology; Humans; Immunoglobulin Variable Region / genetics; Mice; Nucleotides / genetics; Nucleotides / immunology; Pseudogenes / immunology; Thymine / immunology
TL;DR: The findings suggest that the mechanism of somatic hypermutation is complex, involving two or more stages: introduction of mis-pairs and their subsequent resolution, each with distinct sequence specificity and strand bias. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Short-term effects of pine straw raking on plant species richness and composition of longleaf pine communities

FOREST ECOLOGY AND MANAGEMENT, 127(1-3), 233–247.

author keywords: species richness; pine straw; raking; Pinus palustris Mill.; Croatan National Forest; pine savannas
TL;DR: Although raking may selectively injure shrubs and wiregrass, raking did not allow the introduction of non-native plants and generally had little effect on floristic composition. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Reduced-order model feedback control design: Numerical implementation in a thin shell model

IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 45(7), 1312–1324.

author keywords: LQR feedback control; proper orthogonal decomposition; reduced-basis computational methods; thin shell dynamics
TL;DR: Reduced-order models employing the Lagrange and popular proper orthogonal decomposition (POD) reduced-basis methods in numerical approximation and feedback control of systems are presented and numerically tested. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Quantitative evaluation of alternative mechanisms of blood disposition of di(n-butyl) phthalate and mono(n-butyl) phthalate in rats

TOXICOLOGICAL SCIENCES, 53(2), 173–184.

By: D. Keys n, D. Wallace, T. Kepler* & R. Conolly

author keywords: phthalates; DBP; MBP; PBPK; model; flow-limited; diffusion-limited; pH trapping; enterohepatic circulation; log-likelihood ratio test
MeSH headings : Administration, Oral; Animals; Dibutyl Phthalate / analysis; Dibutyl Phthalate / pharmacokinetics; Environmental Pollutants / blood; Environmental Pollutants / pharmacokinetics; Injections, Intravenous; Male; Models, Biological; Phthalic Acids / blood; Phthalic Acids / pharmacokinetics; Rats; Rats, Sprague-Dawley; Rats, Wistar
TL;DR: The application of the pH trapping model is a step toward developing a generic model structure for all phthalate esters, though more work is required before a generic structure can be identified with confidence. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

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