(1) is the requirement that the cells of the target population have homogeneous radiosensitivity, meaning that all have the same value of the LQ survival constants α and β.However, a cell population exposed to ionizing radiation in the normal tissue or tumor of a patient in the clinic will, with few exceptions, be a heterogeneous mixture of sub-populations, … ); one that is … A heterogeneous mixture is a mixture of two or more compounds.Examples are: mixtures of sand and water or sand and iron filings, a … It can be helpful to distinguish between different types of heterogeneity. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Read: Coefficient of Variation: Definition, Formula, Interpretation, Examples & FAQs . ‘The population is heterogeneous and cosmopolitan to a degree almost unknown elsewhere.’ ‘For this brief review, I have taken a pragmatic approach, collecting information from heterogeneous sources, with very different degrees of reliability.’ Heterogeneity is an important concept in psychiatric research and science more broadly. On the definition and the computation of the basic reproduction ratio R0 in models for infectious diseases in heterogeneous populations @article{Diekmann1990OnTD, title={On the definition and the computation of the basic reproduction ratio R0 in models for infectious diseases in heterogeneous populations}, author={Odo Diekmann and J. Inaba (1988) introduced a definition of R0 for multistate stable population model, which was defined as the spectral radius of the net reproduction matrix (the set of individual traits is finite). Implicit in Eq. Sci. Total Population Sampling . Diekmann, Heesterbeek and Metz (1990) introduced a definition for … MINIMAL REPAIR IN HETEROGENEOUS POPULATIONS M. S. FINKELSTEIN,* University of the Free State, Bloemfontein Abstract The notion of minimal repair is generalized to the case when the lifetime distribution function is a continuous or a discrete mixture of … One of the major advantages of stratified sampling is it allows you to create a diverse research sample that represents every group in your population of interest. The RDW-SD is an actual measurement of the width of the red cell distribution curve in femtoliters (fL). This demonstrates that in the case of P. fluorescens, phenotypic heterogeneity helps a population survive difficult environmental conditions. Most often age (especially being over the age of 24) has been the defining characteristic for this population. Such differences can occur across both space and time. Heterogeneous refers to a structure with dissimilar components or elements, appearing irregular or variegated. For example, a dermoid cyst has heterogeneous attenuation on CT. It is the antonym for homogeneous, meaning a structure with similar components. Sci. The terms heterogeneous and homogeneous refer to mixtures of materials in chemistry . The difference between heterogeneous and homogeneous mixtures is the degree to which the materials are mixed together and the uniformity of their composition. population is surveyed at one point in time in order to describe characteristics of that population including age, sex, and geographic location, among other characteristics. Microbial cells in bioprocesses are usually described with averaged parameters. Answer 1 of 4. A heterogeneous population of red cells with a broad distribution curve and a high MCV may have a normal RDW-CV. EurLex-2 Throughout the nomenclature, the term "cermets" means products containing a microscopic heterogeneous combination of a metallic component and a ceramic component. heterogeneous definition: 1. consisting of parts or things that are very different from each other: 2. consisting of parts…. Fair Analysis: It includes the samples with distinct data giving a reasonable weightage to each category for unbiased interpretation. Examples Stem. In this paper we propose a model of tuberculosis (TB) transmission in a heterogeneous population consisting of two different subpopulations, like homeless and non-homeless people. Match all exact any words . This criss-cross model is based on the simple SIS model with constant inflow into both subpopulations and bilinear transmission function. jəs / consisting of different parts or types: With many ethnic groups represented, the student body is very heterogeneous. Heterogeneous definition, different in kind; unlike; incongruous. color, shape, size, weight, height, distribution, texture, language, income, disease, temperature, radioactivity, architectural design, etc. Can we assume it is representative? - Eg. Inevitably, studies brought together in a systematic review will differ. Heterogeneity can be defined as the difference or diversity in kind or arrangement of component elements or constituents. It negatively impacts effect size estimates under case-control paradigms, and it exposes important flaws in our existing categorical nosology. Because virtually all ecological systems are heterogeneous, stratifying is used commonly as a There is also a certain Definition: made up of parts that are different from each other and unrelated Synonyms: mixed, miscellaneous, varied assorted, diverse, mingled Antonyms: homogeneous Tips: Heterogeneous originated from Greek, literally meaning "other kind." By Kimberly Jameson. The model is also conceptually related to random effect models that have been proposed to study genotype-environment interactions in population-scale studies [10, 21]. J. Gerontol. ... Mr. DIACONU said that Ukraine was a newly independent country with a heterogeneous population and a legacy of problems, but one that was making efforts to … Thus if the population is homogeneous with respect to the characteristic under study then the. definitions - Population Heterogeneity. Population Heterogeneity (n.) 1.(MeSH)Qualities and characterization of various types of populations within a social or geographic group, with emphasis on demography, health status, and socioeconomic factors. On definition and quantification of heterogeneity. adjective. Oikos 73.2: 280–284. Heterogeneous is the opposite of homogeneous. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Advertizing synonyms - Population Heterogeneity report a problem Population Heterogeneity (n.) ( MeSH) ... "the population of the United States is vast and heterogeneous" heterogenous, heterogeneous adjective. color, shape, size, weight, height, distribution, texture, language, income, disease, temperature, radioactivity, architectural design, etc. Other Words from heterogeneous Synonyms & … Our aim was to introduce tools to quantify population heterogeneity in bioprocesses using a combination of reporter strains, flow cytometry, and … consisting of elements that are not of the same kind or nature. cally more heterogeneous than central and eastern districts (Kerr & Packer 1997). 9.5.1. Heterogeneous populations develop herd immunity quicker by Max Planck Society Comparison between potential courses of an epidemic wave in a populations of various heterogeneity. In this paper, we formulate the estimation of heterogeneous treatment effects as a variable selection problem. With this, you can lower the overall variance in the population. the population of the United States is vast and heterogeneous. Match all exact any words . Heterogeneous nucleation applies to the phase transformation between any two phases of gas, liquid, or solid, typically for example, condensation of gas/vapor, solidification from liquid, bubble formation from liquid, etc. What is heterogeneity? In statistics, cluster sampling is a sampling method in which the entire population of the study is divided into externally, homogeneous but internally, heterogeneous groups called clusters. cordis. DOI: 10.2307/3545921. originating outside the body. : consisting of dissimilar or diverse ingredients or constituents : mixed an ethnically heterogeneous population. Sometimes trials are just looking at different concepts. Learn more. ); one that is … When heterogeneity is present, there is diversity in the characteristic under study. Reviewers might set out to summarise interventions for improving patients' ability to make treatment choices; the trials, however, might have covered diverse interventions, such as information leaflets, CD Roms, counselling sessions with a nurse, and training in consultation … Bacterial populations are heterogeneous, which in many cases can provide a selective advantage during changes in environmental conditions. N2 - The effect of increased adhesiveness and decreased deformability of leukocytes following activation can have a profound effect on flow through the microcirculation. jəs / consisting of different parts or types: With many ethnic groups represented, the student body is very heterogeneous. Med. Children are a heterogeneous population and their heath priorities vary, depending on a range of factors. The standard deviation is used to measure the dispersion, or the spread, of a set of values around their mean. a consisting of elements that are not of the same kind or nature. AU - Adams, R. AU - Rainger, George. We use the criss-cross model to describe the illness dynamics. See more. The four railways from Philadelphia and Washington, Harrisburg and Wheeling, which converge at Baltimore, whirled away the heterogeneous population to the four corners of the United States, and the city subsided into comparative tranquility. Heterogeneity is defined as a dissimilarity between elements that comprise a whole. The difference between heterogeneous and homogeneous mixtures is the degree to which the materials are mixed together and the uniformity of their composition. A homogeneous mixture is a mixture where the components that make up the mixture are uniformly distributed throughout the mixture. diversified. In some instances, heterogeneity exists at the genetic level, in which significant allelic variation occurs within a population seeded by a single cell. Homogeneous definition, composed of parts or elements that are all of the same kind; not heterogeneous: a homogeneous population. Clinical heterogeneity. Homogeneous definition composed of parts or … Definition of heterogeneous in the Definitions.net dictionary. Usage (s) BIDEN: Because it's close to a consensus that can exist in a society as heterogeneous as ours. Definition (adj) consisting of elements that are not of the same kind or nature ... the population of the United States is vast and heterogeneous Definition (adj) originating outside the body Synonyms: heterogenous Mnemonics (Memory Aids) for heterogeneous. The more heterogeneous a population is… The greater the chance is that a sample may not adequately describe a population we could be wrong in the inferences we make about the population. Definition of heterogeneous adjective in Oxford Advanced American Dictionary. Operational Definition •A definition that gives meaning to a concept by specifying the activities necessary to measure it. In chemistry a heterogeneous mixture consists of either or both of a multiple states of matter or b hydrophilic and hydrophobic substances in one mixture. Heterogeneous can be used to describe the diversity of nearly anything — populations, classrooms, collections.A heterogeneous array of immigrants passed through Ellis Island to help create the American "melting pot." By Kimberly Jameson. R. A. Miller, Biomarkers of aging: prediction of longevity using age-sensitive T cell subset determinations in a middle-aged, genetically heterogeneous mouse population. This is to prevent issues of elitism among the high-ability students and to prevent issues of low self-esteem among the lower abilities students. From: Emery and Rimoin's Principles and Practice of Medical Genetics, 2013. On the Definition and the Computation of the Basic Reproduction Ratio R0 in Models For Infectious-Diseases in Heterogeneous Populations February 1990 Journal of Mathematical Biology 28(4):365-82 Meaning of heterogeneous. A heterogenous population is one where individuals are not similar to one another. Evolutionary models of color categorization I Population categorization systems based on normal and dichromat observers. social heterogeneity, but, consistent with subcultural theory, the relationship is restricted to subcultural elements. It is an essential concept in science and statistics. Replicates Heterogeneous Population: It is efficient to select a sample of varying characteristics by creating subgroups. phenotypic heterogeneity. Y1 - 2001/1/1. having variety of character or form or components; or having increased variety. But in fact, single cells within populations vary greatly in characteristics such as stress resistance, especially in response to carbon source gradients. Cultural heterogeneity refers to the presence of multiple different cultures in a given population. heterogeneous - Dictionary definition and meaning for word heterogeneous. Examples Stem. Heterogeneous groups in educational settings include students from a wide range of instructional levels.The practice of assigning mixed groups of students to shared classrooms stems from the education precept that positive interdependence develops when students of varying achievement work together and help each other reach educational goals. A Biol. MSCs are a heterogeneous population of nonhematopoietic multipotent adult stem cells with a fibroblast-like appearance that share three main characteristics as defined by the International Society for Cellular Therapy: plastic adherence, ability to differentiate into tissues of mesodermal lineages, such as adipocytes, chondrocytes and osteocytes and expression of several surface … phenotypic heterogeneity. We have demonstrated the importance of including an empirically validated representation of between-host heterogeneity in norovirus natural history when assessing population-level transmission risks. Because stratifying the population into relatively homogeneous groups of sampling units reduces sampling error, estimates generated within strata have higher precision than simple random samples drawn from the same population. Start studying heterogeneous and homogeneous. (Definition of heterogeneous from the Cambridge Academic Content Dictionary © Cambridge University Press) Examples of heterogeneous heterogeneous PY - 2001/1/1. Estimating Dynamic Treatment Effects in Event Studies with other periods, and apparent pretrends can arise solely from treatment effects heterogeneity. T1 - Monocytes are a rheologically heterogeneous population of cells. Cancer heterogeneity, long recognized as an important clinical determinant of patient outcomes, was poorly understood at a molecular level. An input weighted graph captures the interaction between individuals and communities, where the heterogeneity, and possible asymmetries in the contagiousness, are caught by edge-dependent weights. phenotypic heterogeneity. Our investigation, on a population divided into communities, has been based on the graph-theoretical notion of equitable partition [14– 16]. This can include factors such as people from multiple ethnic or religious backgrounds living in the same area of a city. Definition: If the populations are identical they are said to be homogeneous, and by extension, the sample data are also said to be homogeneous. population. The very objective of social science is not to discover abstract and universal laws but to understand population heterogeneity. The mechanical blending or mixing of objects like elements and compounds defines a mixture. Abstract. An easy way to remember the meaning of this word is that homo is the same and hetero is different. 56A, B180-B186 (2001). 1995. See more. And… The larger the sample needs to be to adequately describe the population we need more observations to be able to Li, H., and J. F. Reynolds. In a heterogeneous population, where individuals have different susceptibilities to mortality that are fixed at birth, frailer members of a cohort die at younger ages leaving a more robust group of survivors at successively older ages. There is no chemical bonding or chemical change in this process. assorted, miscellaneous, mixed, motley, sundry. Ask: is the cluster as heterogeneous as the population? Go To The Definition Find below definitions and meanings of Heterogeneous. It is important that heterogeneous mixing is encouraged in schools and the simplest way of doing so is in the classroom itself. Homogeneity and heterogeneity are concepts often used in the sciences and statistics relating to the uniformity of a substance or organism.A material or image that is homogeneous is uniform in composition or character (i.e. The relationships between the degree of ethnic heterogeneity of an area and other variables have been examined in scientific studies.. One cause for the problems in areas with high ethnic heterogeneity has been argued to be that when an area is no longer ethnically homogeneous, then ethnic nepotism will cause the different ethnicities to try to promote their own ethnic interests … Heterogeneous definition different in kind. AU - Evans, SA. It is the notion of the relative arrangement of elements rather than simply their occurrence that differentiates heterogeneity from that of diversity. Plant species diver-sity in the Appalachians increases with the number of distinct communities and the number of moun-tain peaks in the survey area, suggesting a similar link with topographic and ecological heterogeneity (White & Miller 1988). /ˌhetərəˈdʒiːniəs/ (formal) consisting of many different kinds of people or things the heterogeneous population of the United States opposite homogeneous Extra Examples Oxford Collocations Dictionary Word Origin Definitions on the go Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app. PLF works for animal welfare through a variety of devices including automated tools that integrate audio- and video-captured data for early disease detection and warning systems The sound and image data is analyzed by animal experts into a database used for creating suitable algorithms. Genomic studies have significantly improved our understanding of heterogeneity, and have pointed to ways in which heterogeneity might be understood and defeated for therapeutic effect. heterogeneous - consisting of elements that are not of the same kind or nature; "the population of the United States is vast and heterogeneous" heterogenous diversified - having variety of character or form or components; or having increased variety; "a diversified musical program ranging from classical to modern"; "diversified farming"; "diversified manufacturing"; "diversified … The Ladino population in Guatemala is officially recognized as a distinct ethnic group, and the Ministry of Education of Guatemala uses the following definition: "The ladino population has been characterized as a heterogeneous population which expresses itself in the Spanish language as a maternal language, which possesses specific cultural traits of Hispanic origin mixed with … Helpful to distinguish between different Types of heterogeneity degree to which the materials are mixed together and the uniformity their... > Microbial cells in bioprocesses are usually described with averaged parameters category for unbiased interpretation prevent issues low! 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