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VA Palo Alto Health Care System
VA, Va and variants may refer to: Places * Vä, Sweden, a village * Vatican City (ISO 3166-1 country code VA) * Virginia, United States postal abbreviation Businesses and organizations Businesses * VA Software (also known as "VA Research" and "VA Linux Systems") a company that eventually became Geeknet * VA Tech Wabag, a company with headquarters in Austria and India * Virgin Atlantic, a worldwide airline owned by Richard Branson of the Virgin group * Virgin Australia (IATA code since 2011) * V Australia (IATA code 2009–2011) * Viasa (IATA code 1960–1997) Organizations * United States Department of Veterans Affairs, a department of the US government * VA (Public & Science), Swedish scientific organisation * Vermont Academy, boarding and day high school in Saxtons River, VT * VA, post nominal letters of the Royal Order of Victoria and Albert * VA, nickname for the French association football club Valenciennes FC * Virtual airline (hobby), flight simulation hobby organization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vatican City
Vatican City (), officially the Vatican City State ( it, Stato della Città del Vaticano; la, Status Civitatis Vaticanae),—' * german: Vatikanstadt, cf. '—' (in Austria: ') * pl, Miasto Watykańskie, cf. '—' * pt, Cidade do Vaticano—' * es, Ciudad del Vaticano—' is an independent city-state, microstate and enclave and exclave, enclave within Rome, Italy. Also known as The Vatican, the state became independent from Italy in 1929 with the Lateran Treaty, and it is a distinct territory under "full ownership, exclusive dominion, and sovereign authority and jurisdiction" of the Holy See, itself a Sovereignty, sovereign entity of international law, which maintains the city state's Temporal power of the Holy See, temporal, Foreign relations of the Holy See, diplomatic, and spiritual Legal status of the Holy See, independence. With an area of and a 2019 population of about 453, it is the smallest state in the world both by area and List of countries and dependencies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victoria & Albert Museum
The Victoria and Albert Museum (often abbreviated as the V&A) in London is the world's largest museum of applied arts, decorative arts and design, housing a permanent collection of over 2.27 million objects. It was founded in 1852 and named after Queen Victoria and Prince Albert. The V&A is located in the Royal Borough of Kensington and Chelsea, in an area known as "Albertopolis" because of its association with Prince Albert, the Albert Memorial and the major cultural institutions with which he was associated. These include the Natural History Museum, the Science Museum, the Royal Albert Hall and Imperial College London. The museum is a non-departmental public body sponsored by the Department for Digital, Culture, Media and Sport. As with other national British museums, entrance is free. The V&A covers and 145 galleries. Its collection spans 5,000 years of art, from ancient times to the present day, from the cultures of Europe, North America, Asia and North Africa. Ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtual Address Space
In computing, a virtual address space (VAS) or address space is the set of ranges of virtual addresses that an operating system makes available to a process. The range of virtual addresses usually starts at a low address and can extend to the highest address allowed by the computer's Instruction set, instruction set architecture and supported by the operating system's pointer size implementation, which can be 4 bytes for 32-bit or 8 bytes for 64-bit OS versions. This provides several benefits, one of which is security through process isolation assuming each process is given a separate address space. Example :''In the following description, the terminology used will be particular to the Windows NT operating system, but the concepts are applicable to other virtual memory operating systems.'' When a new application on a 32-bit OS is executed, the process has a VAS: each one of the memory addresses (from 0 to 232 − 1) in that space can have a single byte as a value. Initially, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Key Infrastructure
A public key infrastructure (PKI) is a set of roles, policies, hardware, software and procedures needed to create, manage, distribute, use, store and revoke digital certificates and manage public-key encryption. The purpose of a PKI is to facilitate the secure electronic transfer of information for a range of network activities such as e-commerce, internet banking and confidential email. It is required for activities where simple passwords are an inadequate authentication method and more rigorous proof is required to confirm the identity of the parties involved in the communication and to validate the information being transferred. In cryptography, a PKI is an arrangement that ''binds'' public keys with respective identities of entities (like people and organizations). The binding is established through a process of registration and issuance of certificates at and by a certificate authority (CA). Depending on the assurance level of the binding, this may be carried out by an automa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visual Acuity
Visual acuity (VA) commonly refers to the clarity of vision, but technically rates an examinee's ability to recognize small details with precision. Visual acuity is dependent on optical and neural factors, i.e. (1) the sharpness of the retinal image within the eye, (2) the health and functioning of the retina, and (3) the sensitivity of the interpretative faculty of the brain. The most commonly referred visual acuity is the far acuity (e.g. 6/6 or 20/20 acuity), which describes the examinee's ability to recognize small details at a far distance, and is relevant to people with myopia; however, for people with hyperopia, the near acuity is used instead to describe the examinee's ability to recognize small details at a near distance. A common cause of low visual acuity is refractive error (ametropia), errors in how the light is refracted in the eyeball, and errors in how the retinal image is interpreted by the brain. The latter is the primary cause for low vision in people with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heart Arrhythmia
Arrhythmias, also known as cardiac arrhythmias, heart arrhythmias, or dysrhythmias, are irregularities in the heartbeat, including when it is too fast or too slow. A resting heart rate that is too fast – above 100 beats per minute in adults – is called tachycardia, and a resting heart rate that is too slow – below 60 beats per minute – is called bradycardia. Some types of arrhythmias have no symptoms. Symptoms, when present, may include palpitations or feeling a pause between heartbeats. In more serious cases, there may be lightheadedness, passing out, shortness of breath or chest pain. While most cases of arrhythmia are not serious, some predispose a person to complications such as stroke or heart failure. Others may result in sudden death. Arrhythmias are often categorized into four groups: extra beats, supraventricular tachycardias, ventricular arrhythmias and bradyarrhythmias. Extra beats include premature atrial contractions, premature ventricular contractions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventral Anterior Nucleus
The ventral anterior nucleus (VA) is a nucleus of the thalamus. It acts with the anterior part of the ventral lateral nucleus to modify signals from the basal ganglia. Inputs and outputs The ventral anterior nucleus receives neuronal inputs from the basal ganglia. Its main afferent fibres are from the globus pallidus. The efferent fibres from this nucleus pass into the premotor cortex The premotor cortex is an area of the motor cortex lying within the frontal lobe of the brain just anterior to the primary motor cortex. It occupies part of Brodmann's area 6. It has been studied mainly in primates, including monkeys and humans. ... for initiation and planning of movement. Functions It helps to function in movement by providing feedback for the outputs of the basal ganglia. Additional images File:Constudthal.gif, Thalamus File:Territoriostalamo.svg, Thalamus References {{DEFAULTSORT:Ventral Anterior Nucleus Thalamus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vascular Anomaly
A vascular anomaly is any of a range of lesions from a simple birthmark to a large tumor that may be disfiguring. They are caused by a disorder of the vascular system. A vascular anomaly is a localized defect in blood or lymph vessels. These defects are characterized by an increased number of vessels, and vessels that are both enlarged and sinuous. Some vascular anomalies are congenital, others appear within weeks to years after birth, and others are acquired by trauma or during pregnancy. Inherited vascular anomalies are also described and often present with a number of lesions that increase with age. Vascular anomalies can also be a part of a syndrome. The estimated prevalence of vascular anomalies is 4.5%. Vascular anomalies can occur throughout the whole body, but in 60% of patients they are localized in the head and neck region. Vascular anomalies can present in various ways, when situated deep below the skin, they appear blue, and are often called cavernous. Superficial vascula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valproic Acid
Valproate (VPA) and its valproic acid, sodium valproate, and valproate semisodium forms are medications primarily used to treat epilepsy and bipolar disorder and prevent migraine headaches. They are useful for the prevention of seizures in those with absence seizures, partial seizures, and generalized seizures. They can be given intravenously or by mouth, and the tablet forms exist in both long- and short-acting formulations. Common side effects of valproate include nausea, vomiting, somnolence, and dry mouth. Serious side effects can include liver failure, and regular monitoring of liver function tests is therefore recommended. Other serious risks include pancreatitis and an increased suicide risk. Valproate is known to cause serious abnormalities in fetuses if taken during pregnancy, and is contra-indicated for women of childbearing age unless the drug is essential to their medical condition. As of 2022 the drug was still prescribed in the UK to potentially pregnant women, b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voice Actor
Voice acting is the art of performing voice-overs to present a character or provide information to an audience. Performers are called voice actors/actresses, voice artists, dubbing artists, voice talent, voice-over artists, or voice-over talent. Voice acting is recognised as a specialized dramatic profession in the United Kingdom, primarily due to BBC broadcasts of radio drama production. Examples of voice work include animated, off-stage, off-screen or non-visible characters in various works such as feature films, dubbed foreign-language films, animated films, anime, television shows, video games, cartoons, documentaries, commercials, audiobooks, radio dramas and comedies, amusement rides, theater productions, puppet shows and audio games. Voice actors are also heard through pre-recorded and automated announcements that are a part of everyday modern life in areas such as shops, elevators, waiting rooms and public transport. The role of a voice actor may involve singing, mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visual Arts
The visual arts are art forms such as painting, drawing, printmaking, sculpture, ceramics, photography, video, filmmaking, design, crafts and architecture. Many artistic disciplines such as performing arts, conceptual art, and textile arts also involve aspects of visual arts as well as arts of other types. Also included within the visual arts are the applied arts such as industrial design, graphic design, fashion design, interior design and decorative art. Current usage of the term "visual arts" includes fine art as well as the applied or decorative arts and crafts, but this was not always the case. Before the Arts and Crafts Movement in Britain and elsewhere at the turn of the 20th century, the term 'artist' had for some centuries often been restricted to a person working in the fine arts (such as painting, sculpture, or printmaking) and not the decorative arts, craft, or applied Visual arts media. The distinction was emphasized by artists of the Arts and Crafts Movement ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtual Analog
An analog modeling synthesizer is a synthesizer that generates the sounds of traditional analog synthesizers using DSP components and software algorithms. Analog modeling synthesizers simulate the behavior of the original electronic circuitry in order to digitally replicate their tone. This method of synthesis is also referred to as ''virtual analog'' or VA. Analog modeling synthesizers can be more reliable than their true analog counterparts since the oscillator pitch is ultimately maintained by a digital clock, and the digital hardware is typically less susceptible to temperature changes. While analog synthesizers need an oscillator circuit for each voice of polyphony, analog modeling synthesizers do not face this problem. This means that many of them, especially the more modern models, can produce as many polyphonic voices as the CPU on which they run can handle. Modeling synths also provide patch storage capabilities and MIDI support not found on most true analog instruments. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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