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TOC
Toc or TOC may refer to: Documents * Table of contents found at the beginning of a book or document Organizations * Transnational organized crime * Thomson Corporation, by ticker symbol on the New York and Toronto Stock Exchanges * The Objectivist Center, part of The Atlas Society * Tactical operations center, for police, paramilitary, or military operations * Taste of Chaos, a winter/spring concert series * Tournament of Champions (debate), a high school debate tournament * Train operating company in the UK * Town of Cambridge Perth, Western Australia Places * Monte Toc, Italy, site of a major landslide * Toc, a village in Săvârșin Commune, Arad County, Romania * Town Centre stop, a Light Rail stop in Hong Kong, by MTR station code Science and technology * TOC protocol, an instant message communications protocol * Translocon at the outer membrane of chloroplast, in beta barrel * Total organic carbon in an organic compound * TOC1 (gene), a gene that regulates circadian rhyt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Total Operating Characteristic
The total operating characteristic (TOC) is a statistical method to compare a Boolean variable versus a rank variable. TOC can measure the ability of an index variable to diagnose either presence or absence of a characteristic. The diagnosis of presence or absence depends on whether the value of the index is above a threshold. TOC considers multiple possible thresholds. Each threshold generates a two-by-two contingency table, which contains four entries: hits, misses, false alarms, and correct rejections. The receiver operating characteristic (ROC) also characterizes diagnostic ability, although ROC reveals less information than the TOC. For each threshold, ROC reveals two ratios, hits/(hits + misses) and false alarms/(false alarms + correct rejections), while TOC shows the total information in the contingency table for each threshold. The TOC method reveals all of the information that the ROC method provides, plus additional important information that ROC does not reveal, i.e. th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contents
Content or contents may refer to: Media * Content (media), information or experience provided to audience or end-users by publishers or media producers ** Content industry, an umbrella term that encompasses companies owning and providing mass media and media metadata ** Content provider, a provider of non-core services in the telecommunications industry ** Free content, published material that can be used, copied, and modified without significant legal restriction ** Open content, published material licensed to authorize copying and modification by anyone ** Web content, information published on the World Wide Web * Content format, an encoded format for converting a specific type of data to displayable information * Digital content * Table of contents, a list of chapters or sections in a document Places * Content (Centreville, Maryland) also known as C.C. Harper Farm, a historic home located at Centreville, Maryland * Content (Upper Marlboro, Maryland) also known as the Bowlin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beta Barrel
In protein structures, a beta barrel is a beta sheet composed of tandem repeats that twists and coils to form a closed toroidal structure in which the first strand is bonded to the last strand (hydrogen bond). Beta-strands in many beta-barrels are arranged in an antiparallel fashion. Beta barrel structures are named for resemblance to the barrels used to contain liquids. Most of them are water-soluble proteins and frequently bind hydrophobic ligands in the barrel center, as in lipocalins. Others span cell membranes and are commonly found in porins. Porin-like barrel structures are encoded by as many as 2–3% of the genes in Gram-negative bacteria. It has been shown that more than 600 proteins with various function (e.g., oxidase, dismutase, amylase) contain the beta barrel structure. In many cases, the strands contain alternating polar and non-polar (hydrophilic and hydrophobic) amino acids, so that the hydrophobic residues are oriented into the interior of the barrel to form a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Top Of Climb
In aviation, the top of climb, also referred to as the TOC or T/C, is the computed transition from the climb phase of a flight to the cruise phase, the point at which the planned climb to cruise altitude is completed. The top of climb is usually calculated by an on-board flight management system and is designed to provide the most economical climb to cruise altitude or to meet some other objective (fastest climb, greatest range, etc.). The top of climb may be calculated manually with considerable effort. Alternatively, when manual planning and monitoring a VFR flight, TOC is an elegant and efficient way for a pilot to eliminate all the vaguery and variability of departing any airport (the turns assigned, changes of runway the pilot cannot control). TOC establishes a "starting gate" for the en route portion of a flight to allow timing and tracking along the course. A clearly determined TOC is predicated in planning along the intended route of flight far enough from the departure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theory Of Change
Theory of Change (ToC) is a methodology or a criteria for planning, participation, adaptive management, and evaluation that is used in companies, philanthropy, not-for-profit, international development, research, and government sectors to promote social change. Theory of Change defines long-term goals and then maps backward to identify necessary preconditions. Theory of Change explains the process of change by outlining causal linkages in an initiative, i.e., its shorter-term, intermediate, and longer-term outcomes. The identified changes are mapped – as the "outcomes pathway" – showing each outcome in logical relationship to all the others, as well as chronological flow and feedback loops. The links between outcomes are explained by "rationales" or statements of why one outcome is thought to be a prerequisite for another. The innovation of Theory of Change lies (1) in making the distinction between desired and actual outcomes and (2) in requiring stakeholders to model their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Substitute Teacher
A substitute teacher is a person who teaches a school class when the regular teacher is absent or unavailable; e.g., because of illness, personal leave, maternal leave and so on. "Substitute teacher" (usually abbreviated as "sub") is the most commonly used phrase in the United States, Canada (except Ontario and New Brunswick), India and Ireland, while supply teacher is the most commonly used term in Great Britain and the Canadian provinces of Ontario and New Brunswick. The term cover teacher is also used in Great Britain. Common synonyms for substitute teacher include relief teacher or casual relief teacher (used in Australia and New Zealand) and "emergency teacher" (used in some parts of the United States). Other terms, such as "guest teacher", are also used by some schools or districts. Regional variants in terminology are common, such as the use of the term teacher teaching on call (TTOC) in the Canadian province of British Columbia and occasional in Ontario. In th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RAF Phonetic Alphabet
The Allied military phonetic spelling alphabets prescribed the words that are used to represent each letter of the alphabet, when spelling other words out loud, letter-by-letter, and how the spelling words should be pronounced for use by the Allies of World War II. They are not a "phonetic alphabet" in the sense in which that term is used in phonetics, i.e. they are not a system for transcribing speech sounds. The Allied militaries – primarily the US and the UK – had their own radiotelephone spelling alphabets which had origins back to World War I and had evolved separately in the different services in the two countries. For communication between the different countries and different services specific alphabets were mandated. The last WWII spelling alphabet continued to be used through the Korean War, being replaced in 1956 as a result of both countries adopting the ICAO/ ITU Radiotelephony Spelling Alphabet, with the NATO members calling their usage the "NATO Phonetic Alpha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiator (engine Cooling)
Radiators are heat exchangers used for cooling internal combustion engines, mainly in automobiles but also in piston-engined aircraft, railway locomotives, motorcycles, stationary generating plant or any similar use of such an engine. Internal combustion engines are often cooled by circulating a liquid called '' engine coolant'' through the engine block, and cylinder head where it is heated, then through a radiator where it loses heat to the atmosphere, and then returned to the engine. Engine coolant is usually water-based, but may also be oil. It is common to employ a water pump to force the engine coolant to circulate, and also for an axial fan to force air through the radiator. Automobiles and motorcycles In automobiles and motorcycles with a liquid-cooled internal combustion engine, a radiator is connected to channels running through the engine and cylinder head, through which a liquid (coolant) is pumped. This liquid may be water (in climates where water is unlik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theory Of Computation
In theoretical computer science and mathematics, the theory of computation is the branch that deals with what problems can be solved on a model of computation, using an algorithm, how efficiently they can be solved or to what degree (e.g., approximate solutions versus precise ones). The field is divided into three major branches: automata theory and formal languages, computability theory, and computational complexity theory, which are linked by the question: ''"What are the fundamental capabilities and limitations of computers?".'' In order to perform a rigorous study of computation, computer scientists work with a mathematical abstraction of computers called a model of computation. There are several models in use, but the most commonly examined is the Turing machine. Computer scientists study the Turing machine because it is simple to formulate, can be analyzed and used to prove results, and because it represents what many consider the most powerful possible "reasonable" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TOC1 (gene)
Timing of CAB expression 1 is a protein that in ''Arabidopsis thaliana'' is encoded by the TOC1 gene. TOC1 is also known as two-component response regulator-like APRR1. TOC1 was the first plant gene that, when mutated, yielded a circadian phenotype. It codes for the transcription factor TOC1, which affects the period of plants' circadian rhythms: built-in, malleable oscillations that repeat every 24 hours. The gene codes for a transcriptional repressor, TOC1, one of five pseudo-response regulators (PRR) that mediate the period of the circadian clock in plants. The TOC1 protein is involved in the clock's evening loop, which is a repressilator that directly inhibits transcription of morning loop genes LHY and CCA1. Toc1 gene is expressed in most plant structures and cells, and has its locus on chromosome 5. Historical context Discovery The TOC1 gene was initially discovered by Prof. Andrew Millar and colleagues in 1995 while Millar was a graduate student. Millar develo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Total Organic Carbon
Total organic carbon (TOC) is the amount of carbon found in an organic compound and is often used as a non-specific indicator of water quality or cleanliness of pharmaceutical manufacturing equipment. TOC may also refer to the amount of organic carbon in soil, or in a geological formation, particularly the source rock for a petroleum play; 2% is a rough minimum. For marine surface sediments average TOC content is 0.5% in the deep ocean, and 2% along the eastern margins. A typical analysis for total carbon (TC) measures both the total organic carbon (TOC) present and the complementing total inorganic carbon (TIC), the latter representing the amount of non-organic carbon, like carbon in carbonate minerals. Subtracting the inorganic carbon from the total carbon yields TOC. Another common variant of TOC analysis involves removing the TIC portion first and then measuring the leftover carbon. This method involves purging an acidified sample with carbon-free air or nitrogen prior to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
