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Pinch Point (other)
Pinch point may refer to: * Pinch point (economics), the level of inventories of a commodity or product below which consumers become concerned about security of supply * Pinch point (mathematics), a type of singular point on an algebraic surface * Pinch point bar, a hand tool consisting of a long, straight metal bar * Curb extension, a traffic calming measure consisting of an angled narrowing of the roadway * The point of closest approach between the hot and cold composite curves in pinch analysis * Pinch point hazard, a mechanical hazard produced by objects coming together. See also * Bottleneck (other), various meanings including a phenomenon where the performance or capacity of a system is limited by one component or resource * Pinch (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinch Point (economics)
A pinch-point is the level of inventories Inventory (American English) or stock (British English) refers to the goods and materials that a business holds for the ultimate goal of resale, production or utilisation. Inventory management is a discipline primarily about specifying the sh ... of a commodity or product below which consumers of that commodity or product become concerned about security of supply. Background When inventories are below the pinch-point, small changes in the balance of supply and demand can cause large changes in the price of the commodity or product. The term was suggested in 1988 by Walter Curlook (Executive Vice-President of Inco Ltd) and was first published by Raymond Goldie with Rob Maiman in 1990. In 2000 Raymond Goldie trademarked the term. See also * Partnerized inventory management References {{reflist Commodity markets ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinch Point (mathematics)
frame, Section of the Whitney umbrella, an example of pinch point singularity. In geometry, a pinch point or cuspidal point is a type of singular point on an algebraic surface. The equation for the surface near a pinch point may be put in the form : f(u,v,w) = u^2 - vw^2 + \, where denotes terms of degree 4 or more and v is not a square in the ring of functions. For example the surface 1-2x+x^2-yz^2=0 near the point (1,0,0), meaning in coordinates vanishing at that point, has the form above. In fact, if u=1-x, v=y and w=z then is a system of coordinates vanishing at (1,0,0) then 1-2x+x^2-yz^2=(1-x)^2-yz^2=u^2-vw^2 is written in the canonical form. The simplest example of a pinch point is the hypersurface defined by the equation u^2-vw^2=0 called Whitney umbrella. The pinch point (in this case the origin) is a limit of normal crossings singular points (the v-axis in this case). These singular points are intimately related in the sense that in order to resolve the pinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinch Point Bar
A digging bar is a long, straight metal bar used for various purposes, including as a post hole digger, to break up or loosen hard or compacted materials such as soil, rock, concrete and ice or as a lever to move objects. Known by other names depending on locale, structural features and intended purpose such as a hop bar or crowbar in Britain, Australia and New Zealand, and slate bar, shale bar, spud bar, pinch point bar or San Angelo bar in North America, or just a bar. In Hawaii, a similar, traditional wooden device known as an ''‘o‘o stick'' is used as a digging bar in groundbreaking ceremonies. Not to be confused with a curved crowbar, which is designed to provide leverage rather than to dig. Uses Common uses of digging bars include breaking up clay, concrete, frozen ground, and other hard materials, moving or breaking up tree roots and obstacles, and making holes in the ground for fence posts. They are often used where space would not allow the use of a pickaxe. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Curb Extension
A curb extension (or also neckdown, kerb extension, bulb-out, bump-out, kerb build-out, nib, elephant ear, curb bulge, curb bulb, or blister) is a traffic calming measure which widens the sidewalk for a short distance. This reduces the crossing distance and allows pedestrians and drivers to see each other when parked vehicles would otherwise block visibility. A curb extension is formed by an angled narrowing of the roadway and a widening of the sidewalk. This is often accompanied by an area of enhanced restrictions (such as a "no stopping" or "no parking" zone) and the appropriate visual reinforcement. This is achieved using painted road markings (e.g. lines, coloured areas, or chevrons), barriers, bollards, or the addition of pavement or street furniture (e.g. planters, street lights, or benches). Curb extensions are often used in combination with other traffic calming measures such as chicanes, speed bumps, or rumble strips, and are frequently sited to protect formal pedestr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinch Analysis
Pinch analysis is a methodology for minimising energy consumption of process (engineering), chemical processes by calculating thermodynamically feasible ''energy targets'' (or minimum energy consumption) and achieving them by optimising heat recovery systems, energy supply methods and process operating conditions. It is also known as ''process integration'', ''heat integration'', ''energy integration'' or ''pinch technology''. The process data is represented as a set of energy flows, or streams, as a function of heat load (product of specific enthalpy and mass flow rate; SI unit watt, W) against temperature (SI unit kelvin, K). These data are combined for all the streams in the plant to give ''composite curves'', one for all ''hot streams'' (releasing heat) and one for all ''cold streams'' (requiring heat). The point of closest approach between the hot and cold composite curves is the ''pinch (plasma physics), pinch point'' (or just ''pinch'') with a hot stream pinch temperature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinch Point Hazard
A pinch point or pinch point hazard is a common class of mechanical hazard where injury or damage may be done by one or more objects moving towards each other, crushing or shearing whatever comes between them. A nip point is a type of pinch point involving rotating objects, such as gears and pulleys. Injuries can range from minor such as blisters to severe like amputations and fatalities. Examples of pinch point hazards include gaps in closing doors and objects swinging or being lowered near fixed objects. Common causes of injuries *Poor situational awareness *Proximity to mobile equipment and fixed structures *Loose clothing, hair or jewelry getting caught in rotating parts or equipment *Inadequate safety barriers *Handling errors *Wrong work procedures or tools *Reaching into moving equipment Safety controls Pre-work hazard inspections can be performed to identify pinch point hazards. These hazards can be managed with control methods, listed below according to the hazard ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bottleneck (other)
Bottleneck literally refers to the narrowed portion (neck) of a bottle near its opening, which limit the rate of outflow, and may describe any object of a similar shape. The literal neck of a bottle was originally used to play what is now known as slide guitar. Metaphorically, the term may also be used as an analogy for any of the following implications of rate limitation or function restriction: Computing * Bottleneck (network), in communication networks using max-min fairness * Bottleneck (software), a software component that severely affects application performance * Internet bottleneck, when high usage slows the performance on the Internet at a particular point * Von Neumann bottleneck, a limit of throughput between a computer's processor and memory * Interconnect bottleneck Geography * Bottleneck (K2), a mountain feature near the top of K2 mountain * Choke point, a feature that reduces passability of terrain * Free State Bottleneck, a quasi-state that existed in Ger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
