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CLD Logo
CLD may refer to: Medicine *Cholesterol-lowering drug *Chronic liver disease * Chronic lung disease Transport *Chelsfield railway station in Orpington, London (National Rail station code: CLD) * ChairLift Detachable, a classification of a Detachable chairlift *McClellan–Palomar Airport in CarLsbaD, California (IATA Code: CLD) Science and technology * Causal loop diagram for modeling dynamic systems * The Center for Life Detection, a NASA-supported collaboration of researchers in the science of detecting life beyond the Earth * Chaldean Neo-Aramaic (language), in ISO 639-3 code (list of all codes beginning with "c") * , the clear direction flag instruction on x86 compatible CPUs, opposite of * CLD chromophore in organic chemistry and polymeric nonlinear optics * CLD player, a series of Laserdisc players with CD playback from Pioneer * Color layout descriptor, a summary used in digital image processing to capture the spatial distribution of color in an image * Command D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Center For Life Detection
The Center for Life Detection (CLD) is a collaboration among scientists and technologists from NASA’s Ames Research Center and Goddard Spaceflight Center, which formed in 2018 to support the planning and implementation of missions that will seek evidence of life beyond Earth. CLD is supported by NASA’s Planetary Science Division and is one of three core teams in the Network for Life Detection. CLD’s perspectives on life detection science and technology development are summarized in “Groundwork for Life Detection”, a white paper submitted to and cited in the 2023-2032 Planetary Science and Astrobiology Decadal Survey. Activities The search for life elsewhere is among the NASA Science Mission Directorate's high-level prioritiesScience 2020-2024: A Vision for Scientific Excellence Priority 1). The Center for Life Detection was founded to support this search by: * conducting research on biosignature “detectability” to help inform target/sample selection and measure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cholesterol-lowering Drug
Lipid-lowering agents, also sometimes referred to as hypolipidemic agents, cholesterol-lowering drugs, or antihyperlipidemic agents are a diverse group of pharmaceuticals that are used to lower the level of lipids and lipoproteins such as cholesterol, in the blood (hyperlipidemia). The American Heart Association recommends the descriptor 'lipid lowering agent' be used for this class of drugs rather than the term 'hypolipidemic'. Classes The several classes of lipid lowering drugs may differ in both their impact on the cholesterol profile and adverse effects. For example, some may lower low density lipoprotein (LDL) levels more so than others, while others may preferentially increase high density lipoprotein (HDL). Clinically, the choice of an agent depends on the patient's cholesterol profilecardiovascular risk and the liver and kidney functions of the patient, evaluated against the balancing of risks and benefits of the medications. In the United States, this is guided by the ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direction Flag
The direction flag is a flag that controls the ''left-to-right'' or ''right-to-left'' direction of string processing, stored in the FLAGS register on all x86-compatible CPUs. at It is bit number 10. This flag is used to determine the direction ('forward' or 'backward') in which several bytes of data will be copied from one place in the , to another. The direction is important mainly when the original data position in memory and the target data position overlap. * If it is set to 0 (using the clear-directio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constrained-layer Damping
Constrained-layer damping is a mechanical engineering technique for suppression of vibration. Typically a viscoelastic or other damping material, is sandwiched between two sheets of stiff materials that lack sufficient damping by themselves. The ending result is, any vibration made on either side of the constraining materials (the two stiffer materials on the sides) are trapped and evidently dissipated in the viscoelastic In materials science and continuum mechanics, viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation. Viscous materials, like water, resist shear flow and strain linearly ... or middle layer. References External links Passive Viscoelastic Constrained Layer Damping Application for a Small Aircraft Landing Gear SystemAn engineering Master's thesis Mechanical engineering {{engineering-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Programmable Logic Device
A programmable logic device (PLD) is an electronic component used to build reconfigurable digital circuits. Unlike digital logic constructed using discrete logic gates with fixed functions, a PLD has an undefined function at the time of manufacture. Before the PLD can be used in a circuit it must be programmed to implement the desired function. Compared to fixed logic devices, programmable logic devices simplify the design of complex logic and may offer superior performance. Unlike for microprocessors, programming a PLD changes the connections made between the gates in the device. PLDs can broadly be categorised into, in increasing order of complexity, Simple Programmable Logic Devices (SPLDs), comprising programmable array logic, programmable logic array and generic array logic; Complex Programmable Logic Devices (CPLDs) and Field-Programmable Gate Arrays (FPGAs). History In 1969, Motorola offered the XC157, a mask-programmed gate array with 12 gates and 30 uncommitted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DIGITAL Command Language
DIGITAL Command Language (DCL) is the standard command language adopted by many of the operating systems created by Digital Equipment Corporation. DCL had its roots in IAS, TOPS-20, and RT-11 and was implemented as a standard across most of Digital's operating systems, notably RSX-11 and RSTS/E, but took its most powerful form in VAX/VMS (later OpenVMS). DCL continues to be developed by VSI as part of OpenVMS. Written when the programming language Fortran was in heavy use, DCL is a scripting language supporting several datatypes, including strings, integers, bit arrays, arrays and booleans, but not floating point numbers. Access to OpenVMS ''system services'' ( kernel API) is through lexical functions, which perform the same as their compiled language counterparts and allow scripts to get information on system state. DCL includes IF-THEN-ELSE, access to all the Record Management Services (RMS) file types including stream, indexed, and sequential, but unfortunately lacks a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Color Layout Descriptor
In digital image and video processing, a color layout descriptor (CLD) is designed to capture the spatial distribution of color in an image. The feature extraction process consists of two parts: grid based representative color selection and discrete cosine transform with quantization. Color is the most basic quality of the visual contents, therefore it is possible to use colors to describe and represent an image. The MPEG-7 standard has tested the most efficient procedure to describe the color and has selected those that have provided more satisfactory results. This standard proposes different methods to obtain these descriptors, and one tool defined to describe the color is the CLD, that permits describing the color relation between sequences or group of images. The CLD captures the spatial layout of the representative colors on a grid superimposed on a region or image. Representation is based on coefficients of the discrete cosine transform (DCT). This is a very compact descr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaldean Neo-Aramaic
Suret ( syr, ܣܘܪܝܬ) ( su:rɪtʰor su:rɪθ, also known as Assyrian or Chaldean, refers to the varieties of Northeastern Neo-Aramaic (NENA) spoken by ethnic Assyrians, including those identifying as religious groups rather than ethnic (Assyrian Jews and Chaldean Catholics) as a result of the Assyrian identity being banned in Iraq until 2004 and its continued unrecognized status in Syria, Turkey, and Israel- Palestine.Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2013). "Northeastern Neo-Aramaic". Glottolog 2.2. Leipzig: Max Planck Institute for Evolutionary Anthropology. The various NENA dialects descend from Old Aramaic, the '' lingua franca'' in the later phase of the Assyrian Empire, which slowly displaced the East Semitic Akkadian language beginning around the 10th century BC.Bae, C. Aramaic as a Lingua Franca During the Persian Empire (538-333 BCE). Journal of Universal Language. March 2004, 1-20. They have been further he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chronic Liver Disease
Chronic liver disease in the clinical context is a disease process of the liver that involves a process of progressive destruction and regeneration of the liver parenchyma leading to fibrosis and cirrhosis. "Chronic liver disease" refers to disease of the liver which lasts over a period of six months. It consists of a wide range of liver pathologies which include inflammation (chronic hepatitis), liver cirrhosis, and hepatocellular carcinoma. The entire spectrum need not be experienced. Signs and symptoms Signs of chronic liver disease detectable on clinical examination can be divided into those that are associated with the diagnosis of chronic liver disease, associated with decompensation, and associated with the cause. Chronic liver disease * Nail clubbing * Palmar erythema * Spider nevi (angiomata) * Gynaecomastia * Feminising hair distribution * Testicular atrophy * Small irregular shrunken liver * Anaemia * Caput medusae Decompensation * Drowsiness (encephalopathy) * Hyperve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Causal Loop Diagram
A causal loop diagram (CLD) is a causal diagram that aids in visualizing how different variables in a system are causally interrelated. The diagram consists of a set of words and arrows. Causal loop diagrams are accompanied by a narrative which describes the causally closed situation the CLD describes. Closed loops, or causal feedback loops, in the diagram are very important features of CLDs. The words with arrows coming in and out represent variables, or quantities whose value changes over time and the links represent a causal relationship between the two variables (i.e., they do not represent a material flow). A link marked + indicates a positive relation where an increase in the causal variable leads, all else equal, to an increase in the effect variable, or a decrease in the causal variable leads, all else equal, to a decrease in the effect variable. A link marked - indicates a negative relation where an increase in the causal variable leads, all else equal, to a decrease in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
