Topics: Soil Fertility, water management, Mineral fertilizer, Phosphate fertilizers, Organic manures, Farmyard manures, compost, sewage, soil sampling, Soil water conservation techniques, erosion control methods

Topics: Soil Ecosystem, Microbial Ecology, soil ecosystem development, Soil Food Web, Biogeochemistry, Nutrient Cycling, Carbon cycling, Nitrogen Cycling, Plant Roots, Rhizosphere

Topics: Engineering Economic Analysis, economic decisions making, estimating engineering costs, interest, present worth analysis, annual cash flow analysis, rate of return analysis, depreciation, income tax, economic life, replacement analysis, inflation, price change, accounting, engineering economy, Decision-Making Process, costs, estimating models, cash flow diagrams, time value of money, equivalence, arithmetic gradient, annuity due, incremental analysis, future worth analysis, breakeven analysis, probability, Joint Probability Distributions, Economic Decision Trees, risk, Investment Tax Credit

Topics: circuit analysis, voltage laws, current laws, nodal analysis, mesh analysis, Handy Circuit Analysis Techniques, operational amplifier, capacitor, inductor, RL circuits, RC Circuits, RLC CIrcuit, Sinusoidal Steady-State Analysis, AC Circuit Power Analysis, Polyphase Circuits, Magnetically Coupled Circuits, Complex Frequency, Laplace Transform, Circuit Analysis in the s-Domain, Frequency Response, Two-Port Networks, Fourier Circuit Analysis

Topics: Soil microbiology, Soil Biochemistry, Nitrogen Cycle, Rhizosphere Microbes, Phosphorus Cycle, Biological Nitrogen Fixation, Mycorrhiza, organic matter, animal wastes, sewage materials, Petroleum Hydrocarbons, Detergents in Soils, Pesticides in Soils, bacteria, Archaea

Topics: medical laboratory science, microorganism, bacteria, virus, fungi, Protozoa, infection, infectious disease, Microscopy, Serological Technique, cultural method, biochemical tests, Nucleic acid detection, Polymerase Chain Reaction

Topics: power system studies, line constants, power flow analysis, short circuit studies, TRANSIENT STABILITY ANALYSIS, MOTOR STARTING STUDIES, POWER FACTOR CORRECTION STUDIES, HARMONIC ANALYSIS, FLICKER ANALYSIS, INSULATION COORDINATION, CABLE AMPACITY ANALYSIS, GROUND GRID ANALYSIS, LIGHTNING SURGE ANALYSIS, EMF STUDIES, DATA ACQUISITION SYSTEMS, RELAY COORDINATION STUDIES

Topics: statistics, summarizing data, listing, grouping, Numerical data, Stem-and-Leaf Displays, frequency distribution, graphical presentations, Summarizing Two-Variable Data, population, sample, mean, weighted mean, median, mode, grouped data, measures of variation, range, standard deviation, variance, posibility, probability, counting, permutation, combination, sample spaces, events, odds, conditional probability, multiplication rules, Bayes theorem, Mathematical Expectation, expectation, decision, decision making, Statistical Decision Problems, Random Variable, probability distributions, binomial distributions, hypergeometric distributions, Poisson distribution, Multinomial distribution, Mean of a Probability Distribution, Standard Deviation of a Probability Distribution, normal distribution, Continuous Distributions, sampling, random sampling, sample designs, systematic sampling, stratified sampling, cluster sampling, sampling distribuions, central limit theorem, estimation, Tests of Hypotheses, Significance Tests, One-Way Analysis of Variance, analysis of variance, Multiple Comparisons, Two-Way Analysis of Variance, Design of Experiments, Design of Experiments, regression, Curve Fitting, Regression Analysis, Multiple Regression, Nonlinear Regression, Coefficient of Correlation, correlation, Correlation Analysis, Multiple Correlation, Partial Correlation, Nonparametric tests, sign test, signed-rank test, U test, H test, Tests of Randomness, Rank Correlation

Topics: soil resources, soil composition, soil properties, soil classification systems, Earth Natural Resources, land use, land cover change, Microorganisms interaction, organic materials interaction, inorganic materials interaction, Fertiliser effects, Pesticides effects, herbicides effect, Environmental Impact Assessment, Environmental Impact Assessment Processes, acid rain, Acid rain effects, Soil Organic Matter, Soil Living Organisms

Topics: Statistical Analysis, statistical data, statistical method, sampling, sample size, data preparation, data cleaning, missing data, data errors, statistical error, probability theory, odds, risk, frequentist probability theory, Bayesian probability theory, probability distribution, statistical modelling, computational statistics, inference, bias, confounding, hypothesis testing, statistical significance, confidence intervals, Non-parametric analysis, descriptive statistics, measures of central tendency, statistical indices, key functions, matrix, data transformation, data standardization, Box-cox, power transforms, Freeman-turkey transform, log transform, exponential transforms, logit transform, Normal transform, Z-transform, data exploration, graphic, visualization, exploratory data analysis, randomness, randomization, random numbers, random permutations, correlation, autocorrelation, probability distributions, eestimations, estimators, Maximum likelihood estimation, Bayesian estimation, z-test, T-test, variance test, contigency tables, randomized block designs, factorial designs, Analysis of variance, Analysis of covariance, ANOVA, MANOVA, ANCOVA, regression, smoothing, time series analysis