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Keel effect – In aeronautics, the keel effect (also known as the pendulum effect or pendulum stability) is the result of the sideforce-generating surfaces being above (or below) the center of mass (which coincides with the center of gravity) in an aircraft. Along with dihedral, sweepback, and weight distribution, keel ... | Wikipedia - Glossary of aerospace engineering | null | null | null |
The three laws state that:The orbit of a planet is an ellipse with the Sun at one of the two foci. A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. The square of a planet's orbital period is proportional to the cube of the length of the semi-major axis of its orbit.The ... | Wikipedia - Glossary of aerospace engineering | null | null | null |
From this, Kepler inferred that other bodies in the Solar System, including those farther away from the Sun, also have elliptical orbits. The second law helps to establish that when a planet is closer to the Sun, it travels faster. The third law expresses that the farther a planet is from the Sun, the slower its orbita... | Wikipedia - Glossary of aerospace engineering | null | null | null |
One implication is that the distribution of debris in orbit could render space activities and the use of satellites in specific orbital ranges difficult for many generations. Kinetic energy – In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed ... | Wikipedia - Glossary of aerospace engineering | null | null | null |
Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest. In classical mechanics, the kinetic energy of a non-rotating object of mass m traveling at a speed ... | Wikipedia - Glossary of aerospace engineering | null | null | null |
In relativistic mechanics, this is a good approximation only when v is much less than the speed of light. Kite – is a tethered heavier-than-air or lighter-than-air craft with wing surfaces that react against the air to create lift and drag forces. A kite consists of wings, tethers and anchors. | Wikipedia - Glossary of aerospace engineering | null | null | null |
Kites often have a bridle and tail to guide the face of the kite so the wind can lift it. Some kite designs don’t need a bridle; box kites can have a single attachment point. A kite may have fixed or moving anchors that can balance the kite. | Wikipedia - Glossary of aerospace engineering | null | null | null |
One technical definition is that a kite is “a collection of tether-coupled wing sets“. The name derives from its resemblance to a hovering bird. Kutta condition – is a principle in steady-flow fluid dynamics, especially aerodynamics, that is applicable to solid bodies with sharp corners, such as the trailing edges of a... | Wikipedia - Glossary of aerospace engineering | null | null | null |
It is named for German mathematician and aerodynamicist Martin Kutta.Kuethe and Schetzer state the Kutta condition as follows:: § 4.11 A body with a sharp trailing edge which is moving through a fluid will create about itself a circulation of sufficient strength to hold the rear stagnation point at the trailing edge.In... | Wikipedia - Glossary of aerospace engineering | null | null | null |
The theorem relates the lift generated by an airfoil to the speed of the airfoil through the fluid, the density of the fluid and the circulation around the airfoil. The circulation is defined as the line integral around a closed-loop enclosing the airfoil of the component of the velocity of the fluid tangent to the loo... | Wikipedia - Glossary of aerospace engineering | null | null | null |
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage and moisture. Isolate from any source of heat or ignition. Avoid storage on wood floors. Separate from incompatibles, combustibles, organic or other readily oxidizable materials. | Wikipedia - Potassium nitrate (data page) | null | null | null |
Keeping in mind that LCS is a paradigm for genetic-based machine learning rather than a specific method, the following outlines key elements of a generic, modern (i.e. post-XCS) LCS algorithm. For simplicity let us focus on Michigan-style architecture with supervised learning. See the illustrations on the right laying ... | Wikipedia - Learning classifier system | null | null | null |
Keeping the research problem in mind, the behavior of elements in the system and their interactions are studied. Elements of a system can interact positively or negatively, that is, the level of an element may activate or reduce the rate of production of other elements or of itself. These interactions are represented a... | Wikipedia - Kinetic logic | null | null | null |
A feedback loop is positive or negative according to whether it contains an even or odd number of negative interactions. In a positive loop, each element of the system exerts a positive effect on its own rate of synthesis, whereas in a simple negative loop, each element has a negative effect on its own rate of synthesi... | Wikipedia - Kinetic logic | null | null | null |
Keeping this type of data anonymous is a challenge for debit and credit card companies who share the information with third parties. Metadata with certain properties, especially a geographical location attached are hard to keep unsourced. Other patterns of behaviour are also unique enough on their own to identify indiv... | Wikipedia - Card Transaction Data | null | null | null |
The standards for protection and enforcement against the release of this metadata varies among OECD member nations. The United States does not have any enforced national law for reporting consumer data breaches. == References == | Wikipedia - Card Transaction Data | null | null | null |
Keeping your devices and programs as data agnostic as possible has some clear advantages. Since the data is stored in an agnostic format, developers do not need to hard-code ways to deal with all different kinds of data. A table with information about dogs and one with information about cats can be treated in the same ... | Wikipedia - Agnostic (data) | null | null | null |
The field definitions and formatting can be stored in the entity synchronization layer with the data they are acting on. Allows fields and formatting to change, without having to hardcode and compile programs. The data and formatting are then generated dynamically by the code used to extract the data and the formatting... | Wikipedia - Agnostic (data) | null | null | null |
The data itself only needs to be distinguished when it is being acted on or displayed in a specific way. If the data is being transferred between devices or databases, it does not need to be interpreted as a specific object. Whenever the data can be treated as agnostic, the coding is simplified, as it only has to deal ... | Wikipedia - Agnostic (data) | null | null | null |
Keevash has published many results in combinatorics, particularly in extremal graph and hypergraph theory and Ramsey Theory. In joint work with Tom Bohman he established the best-known lower bound for the off-diagonal Ramsey Number R ( 3 , k ) {\displaystyle R(3,k)} , namely R ( 3 , k ) ≥ ( 1 4 − o ( 1 ) ) k 2 log k ... | Wikipedia - Peter Keevash | null | null | null |
On 15 January 2014, he released a preprint establishing the existence of block designs with arbitrary parameters, provided only that the underlying set is sufficiently large and satisfies certain obviously necessary divisibility conditions. In particular, his work provides the first examples of Steiner systems with par... | Wikipedia - Peter Keevash | null | null | null |
Keisler's Elementary Calculus: An Infinitesimal Approach defines continuity on page 125 in terms of infinitesimals, to the exclusion of epsilon, delta methods. The derivative is defined on page 45 using infinitesimals rather than an epsilon-delta approach. The integral is defined on page 183 in terms of infinitesimals.... | Wikipedia - Non-standard calculus | null | null | null |
Keisler's textbook is based on Robinson's construction of the hyperreal numbers. Keisler also published a companion book, Foundations of Infinitesimal Calculus, for instructors, which covers the foundational material in more depth. Keisler defines all basic notions of the calculus such as continuity (mathematics), deri... | Wikipedia - Elementary Calculus: An Infinitesimal Approach | null | null | null |
The usual definitions in terms of ε–δ techniques are provided at the end of Chapter 5 to enable a transition to a standard sequence. In his textbook, Keisler used the pedagogical technique of an infinite-magnification microscope, so as to represent graphically, distinct hyperreal numbers infinitely close to each other.... | Wikipedia - Elementary Calculus: An Infinitesimal Approach | null | null | null |
When one examines a curve, say the graph of ƒ, under a magnifying glass, its curvature decreases proportionally to the magnification power of the lens. Similarly, an infinite-magnification microscope will transform an infinitesimal arc of a graph of ƒ, into a straight line, up to an infinitesimal error (only visible by... | Wikipedia - Elementary Calculus: An Infinitesimal Approach | null | null | null |
Keith Clark, Hervé Gallaire, Steve Gregory, Vijay Saraswat, Udi Shapiro, Kazunori Ueda, etc. developed a family of Prolog-like concurrent message passing systems using unification of shared variables and data structure streams for messages. Claims were made that these systems were based on mathematical logic. This kind... | Wikipedia - Indeterminacy in concurrent computation | null | null | null |
Keith Devlin (2000) The Language of Mathematics: Making the Invisible Visible, Holt Publishing. Kay O'Halloran (2004) Mathematical Discourse: Language, Symbolism and Visual Images, Continuum. R. L. E. Schwarzenberger (2000), "The Language of Geometry", in A Mathematical Spectrum Miscellany, Applied Probability Trust. | Wikipedia - Mathematics as a language | null | null | null |
Kelly green is an intense, pure green named after the common Irish family name, Kelly. It evokes the lush green Irish meadows and is also commonly associated with St. Patrick's Day. | Wikipedia - Dark green | null | null | null |
Kelly's criterion may be generalized on gambling on many mutually exclusive outcomes, such as in horse races. Suppose there are several mutually exclusive outcomes. The probability that the k {\displaystyle k} -th horse wins the race is p k {\displaystyle p_{k}} , the total amount of bets placed on k {\displaystyle k} ... | Wikipedia - Kelly criterion | null | null | null |
The fraction of the bettor's funds to bet on k {\displaystyle k} -th horse is f k {\displaystyle f_{k}} . Kelly's criterion for gambling with multiple mutually exclusive outcomes gives an algorithm for finding the optimal set S o {\displaystyle S^{o}} of outcomes on which it is reasonable to bet and it gives explicit f... | Wikipedia - Kelly criterion | null | null | null |
Thus e r 1 {\displaystyle er_{1}} will be the best bet. Set S = ∅ {\displaystyle S=\varnothing } (the empty set), k = 1 {\displaystyle k=1} , R ( S ) = 1 {\displaystyle R(S)=1} . Thus the best bet e r k = e r 1 {\displaystyle er_{k}=er_{1}} will be considered first. | Wikipedia - Kelly criterion | null | null | null |
Repeat: If e r k = D β k p k > R ( S ) {\displaystyle er_{k}={\frac {D}{\beta _{k}}}p_{k}>R(S)} then insert k {\displaystyle k} -th outcome into the set: S = S ∪ { k } {\displaystyle S=S\cup \{k\}} , recalculate R ( S ) {\displaystyle R(S)} according to the formula: and then set k = k + 1 {\displaystyle k=k+1} , Otherw... | Wikipedia - Kelly criterion | null | null | null |
One may prove that R ( S o ) = 1 − ∑ i ∈ S o f i o {\displaystyle R(S^{o})=1-\sum _{i\in S^{o}}{f_{i}^{o}}} where the right hand-side is the reserve rate. Therefore, the requirement e r k = D β k p k > R ( S ) {\displaystyle er_{k}={\frac {D}{\beta _{k}}}p_{k}>R(S)} may be interpreted as follows: k {\displaystyle k} -t... | Wikipedia - Kelly criterion | null | null | null |
The binary growth exponent is G o = ∑ i ∈ S p i log 2 ( e r i ) + ( 1 − ∑ i ∈ S p i ) log 2 ( R ( S o ) ) , {\displaystyle G^{o}=\sum _{i\in S}{p_{i}\log _{2}(er_{i})}+\left(1-\sum _{i\in S}{p_{i}}\right)\log _{2}(R(S^{o})),} and the doubling time is T d = 1 G o . {\displaystyle T_{d}={\frac {1}{G^{o}}}.} This meth... | Wikipedia - Kelly criterion | null | null | null |
Kelvin – Kinematic determinacy – Kinematics – | Wikipedia - Index of mechanical engineering articles | null | null | null |
Kelvin – the primary SI unit of temperature, which uses the symbol K and has absolute zero as its zero point. The temperature in degree Celsius is defined as the temperature in kelvins minus 273.15 (i.e. 0 °C is equal to 273.15 K). Kinematic determinacy – Kinematics – | Wikipedia - Glossary of mechanical engineering | null | null | null |
Kemerovo Division of Institute of Solid State Chemistry and Mechanochemistry of the Siberian Branch of the RAS | Wikipedia - Institute of Solid State Chemistry and Mechanochemistry | null | null | null |
Ken Olsen had publicly predicted that DG would fail, but with the release of the Nova it was clear that was not going to happen. By this time a number of other companies were talking about introducing 16-bit designs as well. Olsen decided these presented a threat to their 18-bit line as well as 12-bit, and began a new ... | Wikipedia - Data General microNOVA | null | null | null |
This emerged in 1970 as the PDP-11, a much more complex design that was as different from the PDP-X as the Nova was. The two designs competed heavily in the market.Rumors of the new system from DEC reached DG shortly after the Nova began shipping. In the spring of 1970 they hired a new designer, Larry Seligman, to leap... | Wikipedia - Data General microNOVA | null | null | null |
Two major changes had taken place since the Nova was designed; one was that Signetics had introduced the 8260, a 4-bit IC that combined an adder, XNOR and AND, meaning the number of chips needed to implement the basic logic was reduced by about three times. Another was that Intel was aggressively talking up semiconduct... | Wikipedia - Data General microNOVA | null | null | null |
In addition, new smaller core memory was used that improved the cycle time from the original's 1,200 ns to 800 ns, offering a further 1/3 improvement. Performance could be further improved by replacing the core with read-only memory; lacking core's read–write cycle, this could be accessed in 300 ns for a dramatic perfo... | Wikipedia - Data General microNOVA | null | null | null |
This was introduced later the same year as the SuperNOVA SC, featuring semiconductor (SC) memory. The much higher performance memory allowed the CPU, which was synchronous with memory, to be further increased in speed to run at a 300 ns cycle time (3.3 MHz). This made it the fastest available minicomputer for many year... | Wikipedia - Data General microNOVA | null | null | null |
Kennedy became a member of the Women's Engineering Society in 1925. She was appointed President of the society in 1932 and re-elected in 1933.In 1927 she gave a lecture titled A Business Woman's Trip to America as well as a debate on The Relative Importance of Commercial and Technical Engineering under Present-Day Cond... | Wikipedia - Elizabeth M. Kennedy | null | null | null |
Kennedy presented her views on the post-war trade depression in her retiring president's address, written in 1934. She speculated that a potential cause was due to "colossal over-production during the end of and shortly after the war, when firms had been speeded up to meet great demands". When these products were no lo... | Wikipedia - Elizabeth M. Kennedy | null | null | null |
Kenneth Allan (2006) distinguishes sociological theory from social theory, in that the former consists of abstract and testable propositions about society, heavily relying on the scientific method which aims for objectivity and to avoid passing value judgments. In contrast, social theory, according to Allan, focuses le... | Wikipedia - Sociological paradigm | null | null | null |
: 43–4 Merton believed these social mechanisms to be "social processes having designated consequences for designated parts of the social structure. "Prominent social theorists include: Jürgen Habermas, Anthony Giddens, Michel Foucault, Dorothy Smith, Roberto Unger, Alfred Schütz, Jeffrey Alexander, and Jacques Derrida.... | Wikipedia - Sociological paradigm | null | null | null |
Kenneth Appel is known for his work in topology, the branch of mathematics that explores certain properties of geometric figures. His biggest accomplishment was proving the four color theorem in 1976 with Wolfgang Haken. The New York Times wrote in 1976: Now the four-color conjecture has been proved by two University o... | Wikipedia - Kenneth Appel | null | null | null |
Their present proof rests in part on 1,200 hours of computer calculation during which about ten billion logical decisions had to be made. The proof of the four-color conjecture is unlikely to be of applied significance. Nevertheless, what has been accomplished is a major intellectual feat. | Wikipedia - Kenneth Appel | null | null | null |
It gives us an important new insight into the nature of two-dimensional space and of the ways in which such space can be broken into discrete portions. At first, many mathematicians were unhappy with the fact that Appel and Haken were using computers, since this was new at the time, and even Appel said, "Most mathemati... | Wikipedia - Kenneth Appel | null | null | null |
The actual proof was described in an article as long as a typical book titled Every Planar Map is Four Colorable, Contemporary Mathematics, vol. 98, American Mathematical Society, 1989.The proof has been one of the most controversial of modern mathematics because of its heavy dependence on computer number-crunching to ... | Wikipedia - Kenneth Appel | null | null | null |
Kenneth Appel's other publications include an article with P.E. Schupp titled Artin Groups and Infinite Coxeter Groups. In this article Appel and Schupp introduced four theorems that are true about Coxeter groups and then proved them to be true for Artin groups. The proofs of these four theorems used the "results and m... | Wikipedia - Kenneth Appel | null | null | null |
Kenneth R. Hammond "Ecological validity: Then and now." == References == | Wikipedia - Ecological validity (perception) | null | null | null |
Kent Pitman's Theory of RelativeTV (Soap Opera Physics) | Wikipedia - Cartoon physics | null | null | null |
Kent is a critic of the many-worlds interpretation of quantum mechanics, as well as the consistent histories interpretation. He has outlined a solution to the quantum reality problem, also called the quantum measurement problem, that is consistent with relativistic quantum theory, proposing that physical reality is des... | Wikipedia - Adrian Kent | null | null | null |
Kent is inventor of the field of relativistic quantum cryptography, where security of the cryptographic tasks is guaranteed from the properties of quantum information and from the relativistic physical principle stating that information cannot travel faster than the speed of light (no-signalling). In 1999 he published ... | Wikipedia - Adrian Kent | null | null | null |
Kepler conjecture Kepler triangle Kepler–Bouwkamp constant Kepler–Poinsot polyhedron | Wikipedia - List of things named after Johannes Kepler | null | null | null |
Kepler provides direct access to scientific data that has been archived in many of the commonly used data archives. For example, Kepler provides access to data stored in the Knowledge Network for Biocomplexity (KNB) Metacat server and described using Ecological Metadata Language. Additional data sources that are suppor... | Wikipedia - Kepler scientific workflow system | null | null | null |
Kepler's Laws, though originally discovered from planetary observations (also due to Tycho Brahe), are true for any central forces. | Wikipedia - Scientific principle | null | null | null |
Kepler's laws of planetary motion Kepler's equation Keplerian elements Kepler problem Kepler problem in general relativity | Wikipedia - List of things named after Johannes Kepler | null | null | null |
Kepler's laws of planetary motion — Kessler syndrome — Kestrel rocket engine — Kinetic energy — Kite — Kutta condition — Kutta–Joukowski theorem — | Wikipedia - Index of aerospace engineering articles | null | null | null |
Keratinocytes are the predominant cells of the epidermis, the outermost layer of the skin. Living keratinocytes reside in the basal, spinous, or granular layers of the epidermis. The outermost layer of the epidermis is called the Stratum corneum and it is composed of terminally differentiated keratinocytes, the Corneoc... | Wikipedia - Peeling skin | null | null | null |
Typically the time it takes for a corneocyte to be formed and then shed is about 14 weeks but this time can vary depending on the anatomical location that the skin is covering. For example, desquamation occurs more slowly at acral (palm and sole) surfaces and more rapidly where the skin is thin, such as the eyelids. No... | Wikipedia - Peeling skin | null | null | null |
This induces the outermost layer of corneocytes to shed, such as is the case after a hot shower or bath. Corneocytes are held together by corneodesmosomes. | Wikipedia - Peeling skin | null | null | null |
In order for desquamation to occur these corneodesmosome connections must be degraded. Keratinocytes residing in the stratum granulosum produce corneodesmosome-degrading kallikrein family members, especially KLK1, KLK5, and KLK7. Kallikreins are serine proteases. | Wikipedia - Peeling skin | null | null | null |
They are packaged within lamellar bodies and released into the intercellular space between the keratinocytes as they transition into becoming corneocytes. To prevent premature desquamation, granular layer keratincoytes also produce kallikrein-inhibitory proteins. At acral surfaces, desquamation occurs more slowly becau... | Wikipedia - Peeling skin | null | null | null |
Keratinocytes differentiation is orchestrated by calcium switch, a process that entails an influx of Ca2+ in keratinocyte which induces broad transcriptional changes necessary for desmosome formation, stratification, and cornification. TRPV6 KO mice display thinner layers of stratum corneum and 20% of the mice also sho... | Wikipedia - TRPV6 | null | null | null |
Keri Gohman, CEO (previously a partner at Bain Capital Ventures) Mike Skelly, CFO (former CFO of Trio Health, UpWind Solutions, and Active Network)In December 2015, American private equity investment firm Providence Equity Partners took a strategic majority investment in AbacusNext (Abacus Data Systems at that time). | Wikipedia - Abacus Data Systems | null | null | null |
Kernel matrix defines the proximity of the input information. For example, in Gaussian radial basis function, it determines the dot product of the inputs in a higher-dimensional space, called feature space. It is believed that the data become more linearly separable in the feature space, and hence, linear algorithms ca... | Wikipedia - Determining the number of clusters in a data set | null | null | null |
The method proceeds by the eigenvalue decomposition of the kernel matrix. It will then analyze the eigenvalues and eigenvectors to obtain a measure of the compactness of the input distribution. | Wikipedia - Determining the number of clusters in a data set | null | null | null |
Finally, a plot will be drawn, where the elbow of that plot indicates the optimal number of clusters in the data set. Unlike previous methods, this technique does not need to perform any clustering a-priori. It directly finds the number of clusters from the data. | Wikipedia - Determining the number of clusters in a data set | null | null | null |
Kernelization is a technique used in fixed-parameter tractability to pre-process an instance of an NP-hard problem in order to remove "easy parts" and reveal the NP-hard core of the instance. A kernelization algorithm takes an instance I {\displaystyle I} and a parameter k {\displaystyle k} , and returns a new instance... | Wikipedia - Parameterized approximation algorithm | null | null | null |
This notion was introduced by Lokshtanov et al., but there are other related notions in the literature such as Turing kernels and α {\displaystyle \alpha } -fidelity kernelization.As for regular (non-approximate) kernels, a problem admits an α-approximate kernelization algorithm if and only if it has a parameterized α-... | Wikipedia - Parameterized approximation algorithm | null | null | null |
Hence it becomes interesting to find problems that admit polynomial sized approximate kernels. Furthermore, a polynomial-sized approximate kernelization scheme (PSAKS) is an α {\displaystyle \alpha } -approximate kernelization algorithm that computes a polynomial-sized kernel and for which α {\displaystyle \alpha } can... | Wikipedia - Parameterized approximation algorithm | null | null | null |
Similarly, the Steiner Tree problem is FPT parameterized by the number of terminals, does not admit a polynomial sized kernel (unless N P ⊆ c o N P / p o l y {\displaystyle NP\subseteq coNP/poly} ), but a PSAKS exists. When parameterizing Steiner Tree by the number of non-terminals in the optimum solution, the problem ... | Wikipedia - Parameterized approximation algorithm | null | null | null |
Kerry S. Walters, an emeritus philosophy professor from Gettysburg College, argues that rationality demands more than just logical or traditional methods of problem solving and analysis or what he calls the "calculus of justification" but also considers "cognitive acts such as imagination, conceptual creativity, intuit... | Wikipedia - Critical analysis | null | null | null |
Keshavan, Montanari and Oh consider a variant of matrix completion where the rank of the m {\displaystyle m} by n {\displaystyle n} matrix M {\displaystyle M} , which is to be recovered, is known to be r {\displaystyle r} . They assume Bernoulli sampling of entries, constant aspect ratio m n {\displaystyle {\frac {m}{n... | Wikipedia - Matrix completion | null | null | null |
They then propose the following algorithm: Trim M E {\displaystyle M^{E}} by removing all observations from columns with degree larger than 2 | E | n {\displaystyle {\frac {2|E|}{n}}} by setting the entries in the columns to 0. Similarly remove all observations from rows with degree larger than 2 | E | n {\displaystyle... | Wikipedia - Matrix completion | null | null | null |
Call the resulting matrix Tr ( M E ) {\displaystyle {\text{Tr}}(M^{E})} . Solve min X , Y min S ∈ R r × r 1 2 ∑ i , j ∈ E ( M i j − ( X S Y † ) i j ) 2 + ρ G ( X , Y ) {\displaystyle \min _{X,Y}\min _{S\in \mathbb {R} ^{r\times r}}{\frac {1}{2}}\sum _{i,j\in E}(M_{ij}-(XSY^{\dagger })_{ij})^{2}+\rho G(X,Y)} where G ( X... | Wikipedia - Matrix completion | null | null | null |
Set G ( X , Y ) {\displaystyle G(X,Y)} as some function forcing X , Y {\displaystyle X,\;Y} to remain incoherent throughout gradient descent if X 0 {\displaystyle X_{0}} and Y 0 {\displaystyle Y_{0}} are incoherent. Return the matrix X S Y † {\displaystyle XSY^{\dagger }} .Steps 1 and 2 of the algorithm yield a matrix ... | Wikipedia - Matrix completion | null | null | null |
‖ ⋅ ‖ F {\displaystyle \|\cdot \|_{F}} denotes the Frobenius norm. Note that the full suite of assumptions is not needed for this result to hold. The incoherence condition, for example, only comes into play in exact reconstruction. | Wikipedia - Matrix completion | null | null | null |
Finally, although trimming may seem counter intuitive as it involves throwing out information, it ensures projecting M E {\displaystyle M^{E}} onto its first r {\displaystyle r} principal components gives more information about the underlying matrix M {\displaystyle M} than about the observed entries. In Step 3, the sp... | Wikipedia - Matrix completion | null | null | null |
Ket is an open-source embedded language designed to facilitate quantum programming, leveraging the familiar syntax and simplicity of Python. It serves as an integral component of the Ket Quantum Programming Platform, seamlessly integrating with a Rust runtime library and a quantum simulator. Maintained by Quantuloop, t... | Wikipedia - Quantum programming language | null | null | null |
Ketamine may be quantitated in blood or plasma to confirm a diagnosis of poisoning in hospitalized people, provide evidence in an impaired driving arrest, or to assist in a medicolegal death investigation. Blood or plasma ketamine concentrations are usually in a range of 0.5–5.0 mg/L in persons receiving the drug thera... | Wikipedia - Ketamine | null | null | null |
Ketene cycloadditions proceed by a concerted, cycloaddition mechanism. Ketenes, unlike most alkenes, can align antarafacially with respect to other alkenes. Thus, the suprafacial- antarafacial geometry required for concerted, thermal cycloaddition can be achieved in reactions of ketenes. This geometry has the interes... | Wikipedia - Ketene cycloaddition | null | null | null |
In the transition state for cyclization, the small substituent points toward the alkene. This model also explains the greater reactivity of cis alkenes relative to trans alkenes in ketene cycloadditions. (2)The configuration of the olefin is retained in the cycloaddition product. Electron-withdrawing substituents on t... | Wikipedia - Ketene cycloaddition | null | null | null |
Ketene is produced by heating acetic acid and trapping the product: CH3CO2H → CH2=C=O + H2O | Wikipedia - Dienol benzene rearrangement | null | null | null |
Ketobemidone is 1-methyl-4-(3-hydroxyphenyl)-4-propionylpiperidine. It is usually available as the hydrochloride, which is a white powder. It is synthesized by alkylating (3-methoxyphenyl)acetonitrile with bis(2-chloroethyl)methylamine, followed by reaction with ethylmagnesium bromide, and finally O-demethylation with ... | Wikipedia - Ketobemidone | null | null | null |
Ketoconazole is a synthetic imidazole. It is a nonsteroidal compound. It is a racemic mixture of two enantiomers, levoketoconazole ((2S,4R)-(−)-ketoconazole) and dextroketoconazole ((2R,4S)-(+)-ketoconazole). Levoketoconazole is under development for potential clinical use as a steroidogenesis inhibitor with better tol... | Wikipedia - Ketoconazole | null | null | null |
Ketones are pervasive in nature. The formation of organic compounds in photosynthesis occurs via the ketone ribulose-1,5-bisphosphate. Many sugars are ketones, known collectively as ketoses. The best known ketose is fructose; it mostly exists as a cyclic hemiketal, which masks the ketone functional group. | Wikipedia - Ketone | null | null | null |
Fatty acid synthesis proceeds via ketones. Acetoacetate is an intermediate in the Krebs cycle which releases energy from sugars and carbohydrates.In medicine, acetone, acetoacetate, and beta-hydroxybutyrate are collectively called ketone bodies, generated from carbohydrates, fatty acids, and amino acids in most vertebr... | Wikipedia - Ketone | null | null | null |
Keto–enol tautomerism is important in several areas of biochemistry. The high phosphate-transfer potential of phosphoenolpyruvate results from the fact that the phosphorylated compound is "trapped" in the less thermodynamically favorable enol form, whereas after dephosphorylation it can assume the keto form. The enzyme... | Wikipedia - Keto–enol tautomerism | null | null | null |
Kevin Conley, CEO Jim Petrie, Senior VP, CFO Steve Maser, VP of Sales and Marketing Mike Smith, Vice President of Engineering Technology | Wikipedia - Seneca Data | null | null | null |
Kevin Warwick had an array of 100 electrodes fired into the median nerve fibres of his left arm. With this in place, over a 3-month period, he conducted a number of experiments linking his nervous system with the internet. | Wikipedia - Self-experimentation in medicine | null | null | null |
Key areas where a VLDB may present challenges include configuration, storage, performance, maintenance, administration, availability and server resources. : 11 | Wikipedia - Very large database | null | null | null |
Key exchange is done either in-band or out-of-band. | Wikipedia - Key exchange | null | null | null |
Key themes in LCE are economic, social, environmental and technological. These themes are interlinking and can be influenced by life cycle engineering. | Wikipedia - Life-cycle engineering | null | null | null |
Key to implementing the circular lifecycle for complex engineering systems is ensuring the engineering design team have a solid understanding of the product's ecosystem. The Lifecycle-Value Stream Matrix for complex and certified circular systems assists engineers and product design teams in visualizing the product's e... | Wikipedia - Circular agriculture | null | null | null |
The matrix captures the value stream for various suppliers providing increasing levels of complexity of products and services. It is important to note that these suppliers will change throughout the life cycle. In the design phase of the complex engineering system, traditionally, the systems-level suppliers would only ... | Wikipedia - Circular agriculture | null | null | null |
Key tools to study algebraic function fields are absolute values, valuations, places and their completions. Given an algebraic function field K/k of one variable, we define the notion of a valuation ring of K/k: this is a subring O of K that contains k and is different from k and K, and such that for any x in K we have... | Wikipedia - Algebraic function field | null | null | null |
Key topic areas for engineering law are: Engineering ethics, professional misconduct, negligent practice, gross negligence and criminal negligence are often defined by case law and legislation. Safety legislation, standards, codes, and regulations, which includes train safety, plant safety, risk management, the electri... | Wikipedia - Engineering law | null | null | null |
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