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PPA Hall
PPA may refer to: Biomedical * '' Palpatio per anum'', Latin medical term for a rectal examination * Parahippocampal place area located within the parahippocampal gyrus * Phenylpropanolamine * Primary progressive aphasia Organizations * Pakistan Pharmacists Association * Palau Pacific Airways * ', the Algerian People's Party in French * Paraguayan People's Army, a group considered a terrorist organization by the Paraguayan state * Philadelphia Parking Authority, a parking agency in Philadelphia, PA, USA * Philippine Ports Authority * The stock symbol of Piraeus Port Authority * Pictorial Photographers of America, founded by Clarence Hudson White with several others in 1916 * Poker Players Alliance, a USA advocacy/lobbying group * Popski's Private Army, a small World War II Special Forces unit of the British 8th Army * Pre-School Playgroups Association, UK organization later named the Pre-school Learning Alliance * Professional Pickleball Association * Professional Photographers of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palpatio Per Anum
Digital rectal examination (DRE; la, palpatio per anum, PPA) is an internal examination of the rectum, performed by a healthcare provider. Prior to a 2018 report from the U.S. Preventive Services Task Force, the DRE was a common and "dreaded" component of annual exams for older men, as it was thought to be a reliable screening test for prostate cancer. Usage This examination may be used * for the diagnosis of prostatic disorders, benign prostatic hyperplasia and the four types of prostatitis. Chronic prostatitis/chronic pelvic pain syndrome, chronic bacterial prostatitis, acute (sudden) bacterial prostatitis, and asymptomatic inflammatory prostatitis. The DRE has a 50% specificity for benign prostatic hyperplasia. Vigorous examination of the prostate in suspected acute prostatitis can lead to seeding of septic emboli and should never be done. Its utility as a screening method for prostate cancer however is not supported by the evidence; * for the evaluation of certain clinic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Professional Publishers Association
The Professional Publishers Association (PPA), formerly known as the Periodical Publishers Association until 2011, is the main publishing industry body which promotes companies involved in the production of media, supporting the creative economy at governmental level in the United Kingdom. History The organisation was first founded in 1913 as the Society of Weekly Newspapers and Periodical Proprieters to discuss matters around unionisation, distribution and material supplies in the early 20th Century. It celebrated its centenary on November 19, 2013. Operations Much of the PPA's work is carried out through events, committees and public relations work as documented in their extensive archive of organisational documents dating back to 1942. The association now also covers digital media and a specific committee for smaller, independent publishers, the PPA Independent Publishers Network (IPN). The current CEO of the PPA is Owen Meredith, appointed in 2020 after Barry McIlheney stepped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purchase Price Allocation
Purchase price allocation (PPA) is an application of goodwill accounting whereby one company (the acquirer), when purchasing a second company (the target), allocates the purchase price into various assets and liabilities acquired from the transaction. In the United States, the process of conducting a PPA is typically conducted in accordance with the Financial Accounting Standards Board's ("FASB") Statement of Financial Accounting Standards No. 141 (revised 2007) “Business Combinations” (“SFAS 141r”) and SFAS 142 “Goodwill and Other Intangible Assets” (“SFAS 142”). Effective for financial statements issued for interim and annual periods ending after September 15, 2009, the FASB "Accounting Standards Codification" ("ASC") reorganizes the FASB statements and represents a single authoritative source of U.S. accounting and reporting standards for nongovernmental entities. The set of guidelines prescribed by SFAS 141r are generally found in ASC Topic 805. Outside the Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PPA (complexity)
In computational complexity theory, PPA is a complexity class, standing for "Polynomial Parity Argument" (on a graph). Introduced by Christos Papadimitriou in 1994 (page 528), PPA is a subclass of TFNP. It is a class of search problems that can be shown to be total by an application of the handshaking lemma: ''any undirected graph that has a vertex whose degree is an odd number must have some other vertex whose degree is an odd number''. This observation means that if we are given a graph and an odd-degree vertex, and we are asked to find some other odd-degree vertex, then we are searching for something that is guaranteed to exist (so, we have a total search problem). Definition PPA is defined as follows. Suppose we have a graph on whose vertices are n-bit binary strings, and the graph is represented by a polynomial-sized circuit that takes a vertex as input and outputs its neighbors. (Note that this allows us to represent an exponentially-large graph on which we can efficiently pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pollution Prevention Act Of 1990
The Pollution Prevention Act of 1990 (PPA) is a United States federal law that created a national policy to promote the prevention of pollution or reduction at pollution sources wherever possible. The law also expanded the Toxics Release Inventory (TRI), a waste reporting program administered by the United States Environmental Protection Agency (EPA). Overview The Pollution Prevention Act focused industry, government, and public attention on reducing the amount of pollution through cost-effective changes in production, operation, and raw materials use. Opportunities for source reduction are often not realized because many existing environmental regulations focus on waste treatment and disposal. Consequently industrial resources have been focused on compliance with the treatment and disposal requirements. Implementation EPA efforts to promote prevention practices include waste permitting procedures, revisions to regulations, technical assistance to industry and government agencies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Point Pattern Analysis
Point pattern analysis (PPA) is the study of ''point patterns'', the spatial arrangements of points in space (usually 2-dimensional space). The simplest formulation is a set ''X'' = where ''D'', which can be called the 'study region,' is a subset of R''n'', a ''n''-dimensional Euclidean space. Description The easiest way to visualize a 2-D point pattern is a map of the locations, which is simply a scatterplot but with the provision that the axes are equally scaled. If D is not the boundary of the map then it should also be indicated. An empirical definition of D would be the convex hull of the points, or at least their bounding box, a matrix of the ranges of the coordinates. Another straightforward way to visualize the points is a 2D histogram (sometimes called a quadrats) that bins the points into rectangular regions. A benefit of quadrat analysis is that it forces the analysis to take into account possible scales within which statistically significant inhomogeneities may be occ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pension Protection Act Of 2006
The Pension Protection Act of 2006 (), 120 Stat. 780, was signed into law by U.S. President George W. Bush on August 17, 2006. Pension reform This legislation requires companies who have underfunded their pension plans to pay higher premiums to the Pension Benefit Guaranty Corporation (PBGC) and extends the requirement of providing extra funding to the pension systems of companies that terminate their pension plans. It also requires companies to analyze their pension plans' obligations more accurately, closes loopholes that previously allowed some companies to underfund their plans by skipping payments, and raises the cap on the amount employers are allowed to invest in their own plans. This will allow employers to deduct more money using the pension tax shield in times of high profits. It requires actuaries to use the equivalent of the projected accrued benefit cost method for determining annual normal cost. Other elements: * Provides statutory authority for employers to enroll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphosphoric Acid
A phosphoric acid, in the general sense, is a phosphorus oxoacid in which each phosphorus (P) atom is in the oxidation state +5, and is bonded to four oxygen (O) atoms, one of them through a double bond, arranged as the corners of a tetrahedron. Two or more of these tetrahedra may be connected by shared single-bonded oxygens, forming linear or branched chains, cycles, or more complex structures. The single-bonded oxygen atoms that are not shared are completed with acidic hydrogen atoms. The general formula of a phosphoric acid is , where ''n'' is the number of phosphorus atoms and ''x'' is the number of fundamental cycles in the molecule's structure, between 0 and (''n''+2)/2. Removal of protons () from ''k'' hydroxyl groups –OH leaves anions generically called phosphates (if ''k'' = ''n''−2''x''+2) or hydrogen phosphates (if ''k'' is between 1 and ''n''−2''x''+1), with general formula ''n''−2''x''+2−''k''P''n''O3''n''+1−''x''sup>''k''−. The fully dissociated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Purchase Agreement
A power purchase agreement (PPA), or electricity power agreement, is a contract between two parties, one which generates electricity (the seller) and one which is looking to purchase electricity (the buyer). The PPA defines all of the commercial terms for the sale of electricity between the two parties, including when the project will begin commercial operation, schedule for delivery of electricity, penalties for under delivery, payment terms, and termination. A PPA is the principal agreement that defines the revenue and credit quality of a generating project and is thus a key instrument of project finance. There are many forms of PPA in use today and they vary according to the needs of buyer, seller, and financing counter parties. Contractual terms of a PPA may last anywhere between 5 and 20 years, during which time the power purchaser buys energy, and sometimes also capacity and/or ancillary services, from the electricity generator. Such agreements play a key role in the financin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphthalamide
Polyphthalamide (aka. PPA, High Performance Polyamide) is a subset of thermoplastic synthetic resins in the polyamide (nylon) family defined as when 55% or more moles of the carboxylic acid portion of the repeating unit in the polymer chain is composed of a combination of Terephthalic acid, terephthalic (TPA) and Isophthalic acid, isophthalic (IPA) acids. The substitution of aliphatic diacids by aromatic diacids in the polymer backbone increases the melting point, glass transition temperature, chemical resistance and stiffness. PPA based resins are molded into parts to replace metals in applications requiring high temperature resistance such as automotive powertrain components, the housing for high temperature electrical connectors and many other uses. Structure The diamines in PPAs are Aliphatic compound, aliphatic. PA6T homopolymer melts at 371 °C, which renders it intractable. To make usable polymers, it is necessary to lower the melting point, which can be achieve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Personal Package Archive
Ubuntu ( ) is a Linux distribution based on Debian and composed mostly of free and open-source software. Ubuntu is officially released in three editions: ''Desktop'', ''Server'', and ''Core'' for Internet of things devices and robots. All the editions can run on the computer alone, or in a virtual machine. Ubuntu is a popular operating system for cloud computing, with support for OpenStack. Ubuntu's default desktop changed back from the in-house Unity to GNOME after nearly 6.5 years in 2017 upon the release of version 17.10. Ubuntu is released every six months, with long-term support (LTS) releases every two years. , the most-recent release is 22.10 ("Kinetic Kudu"), and the current long-term support release is 22.04 ("Jammy Jellyfish"). Ubuntu is developed by British company Canonical, and a community of other developers, under a meritocratic governance model. Canonical provides security updates and support for each Ubuntu release, starting from the release date and until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pay-per-action
Cost per action (CPA), also sometimes misconstrued in marketing environments as cost per acquisition, is an online advertising measurement and pricing model referring to a specified action, for example, a sale, click, or form submit (e.g., contact request, newsletter sign up, registration, etc.). Direct response advertisers often consider CPA the optimal way to buy online advertising, as an advertiser only considers the measured CPA goal as the important outcome of their activity The desired ''action'' to be performed is determined by the advertiser. In affiliate marketing, this means that advertisers only pay the affiliates for leads that result in the desired action such as a sale. This removes the risk for the advertiser because they know in advance that they will not have to pay for bad referrals, and it encourages the affiliate to send good referrals. Radio and TV stations also sometimes offer unsold inventory on a cost per action basis, but this form of advertising is mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
