wiktionarypar period periodic TOCright Period from Greek or periodic may refer to Science Orbital period , a concept in astronomy Period gene , a gene in Drosophila involved in regulating circadian rhythm Period geology , a subdivision of geologic time Periodic function and periodical, a function that repeats its values in regular intervals Periodic group in group theory Periodic table , a chart which lists all currently known chemical elements Period periodic table , a horizontal row of the periodic table Periodic acid , an oxoacid of iodine Period physics ,The time taken for one full oscillation, it is the reciprocal of frequency Orbit dynamics Period of orbit Periodization Period of time The ring of periods , those numbers which can be expressed as integrals of algebraic differential forms over algebraically defined domains Language and literature Full stop , a punctuation mark indicating the end of a sentence or phrase Periodic sentence , a sentence that is not grammatically complete until its end The final book in Dennis Cooper George Miles cycle Dennis Cooper s George Miles cycle of novels History Pisano periodPeriod piece describes creative works set in a particular era Medical Menstruation , a phase of the menstrual cycle in which the uterine lining is shed Mathematics The period of a periodic function Ring of periods Academics Period school , a class period in schools Music Instruments Period music , a concept in musical composition Sports Ice hockey Periods and overtime Periods in ice hockey , intervals into which a match is divided Other meanings Periodicity disambiguation Periodicity , the quality of occurring at regular intervals or periods See also Periodization Full stop disambiguation disambig af Periode be x old cs Perioda da Periode de ... Periodo id Periode it Periodo lb Period lt Periodas nl Periode ja no Periode nds Periood pl Okres pt Per odo ru simple Period sk Peri da fi Jakso sv Period uk ... more details
Classical period can refer to the following The Classical Greece Classical Period of ancient Greece , which fell between its Archaic period in Greece Archaic Period and Hellenistic Greece Hellenistic Period . Classical antiquity Classical period music Classical period of music Classic stage of American archaeology disambig nl Klassieke Periode ... more details
Period pains may refer to Dysmenorrhea , the pain associated with menstruation Period Pains band , a UK indie punk band of the 1990s disambig ... more details
About the accounting period in bookkeeping the charge period of the United Kingdom corporation tax Accounting period UK taxation accounting Accounting period in bookkeeping is the period with reference to which accounting books of any entity are prepared. It is the period for which books are balanced and the financial statements are prepared. Generally, the accounting period consists of 12 months. However the beginning of the accounting period differs according to the jurisdiction. For example one entity may follow the regular calendar year, i.e. January to December as the accounting year, while another entity may follow April to March as the accounting period. The International Financial Reporting Standards even allows a period of 52 weeks as an accounting period instead of a proper year. ref IAS 1 Presentation of Financial Statements ref In some of the ERP tools there are more than 12 accounting periods in a financial year. They put one accounting period as Year Open period where all the carried over balances from last financial year are cleared and one period as Year Close where all the transactions for closed for the same financial year. References Reflist Category Accountancy Accounting stub ... more details
The term Sunrise Period refers to the period of time at the launch of a new top level domain or second level domain during which owners of trademarks may register a domain name containing the owned mark. Numerous domains have launched or plan to launch with a sunrise period, including .info , .mobi , .pk , and .eu . The World Intellectual Property Organization provided assistance to .info administrator Afilias during .info s Sunrise Period. External links http www.afilias.info register schedule sunrise period Afilias page on the .info Sunrise Period Category Domain name system Compu domain stub de Sunrise Period no Sunrise periode vi Giai o n M t tr i m c ... more details
The name Archaic Period is given by archaeologists to the earliest periods of a culture. In particular, it may refer to the Archaic period in the Americas 8000 BC&ndash 1000 BC the Archaic period in Greece 750 BC&ndash 480 BC the Early Dynastic Period of Egypt 3100 BC&ndash 2600 BC disambiguation es Per odo arcaico it Periodo arcaico sk Archaick obdobie sh Arhajski period ... more details
consumed during a student s free period Some schools have an extended lunch period and that could be used as a free period as well. Lunch periods in high school could be up to 60 minutes long. A free period in a college is a time period that a student is not enrolled in a class. During the free period, students are literally free and could do whatever they want that complies to the campus rules ... with other services of the college . References Reflist DEFAULTSORT Free Period Category School ... more details
In finance , in particular with reference to Bond finance bonds and Swap finance swaps , a stub period is a period of time over which interest accrues which is not equal to the usual interval between Coupon bond bond coupon . These normally occur because the interval between coupons does not fit neatly into the period that the bond was issued for, thus sometimes a bond s final or first coupon period may be adjusted to make the bond start and mature on the desired dates. References Unreferenced date April 2009 finance stub Category Finance ... more details
Unreferenced stub auto yes date December 2009 Orphan date December 2009 The Sloop Period Sluppt in is a period in Faroe islands Faroese history, where the Faroese society transformed from a feudal society to a semi industrial society. The name of the period comes from the fact, that a lot of Faroese persons bought sloop s from neighbouring countries, and this gave an uprise in fishery on the islands. The period spans from late 19th century to the end of World War II . DEFAULTSORT Sloop Period Category History of the Faroe Islands Faroes stub Euro hist stub ... more details
Period piece is a phrase that is used to describe creative works. Usage Setting In the performing arts , a period piece is a work set in a particular era. This informal term covers all countries, all periods and all genre s. It may be as long and general as the Middle Ages medieval era or as limited as one decade&mdash the 1920s Roaring Twenties , for example. Work from the past Period piece can also describe a work that was famous in a past era but less so today for example, one might describe a production of a drama by one of Shakespeare s contemporaries as an interesting period piece but would be less likely to describe a production of Hamlet as such. Or date July 2009 Period piece is contrasted with classic classic piece , or something with timeless or lasting broad readership. Recent work Period piece can also be used Subjectivity subjective ly, such as when applied to contemporary or recent works which have not been tested by time, since it is guessing how future generations will view the work. For example Harold Bloom in The Western Canon 1994 labels those works not included in his list of 20th century literature as being mostly period pieces see Appendix header for The Chaotic Age . Since these works are still being widely read Harry Potter for example , it is impossible to know if they will become regarded as classics in the future or simply fade away into mostly unread period pieces. See also List of costume drama films Historical drama Sword and sandal External links http www.perioddramas.com Period Dramas.com &ndash a costume drama movie database based around a historical timeline. http www.justperiodmovies.com Period Movies listings of period piece films from various historical eras. http enchantedserenityperiodfilms.blogspot.com Enchanted Serenity of Period Films fansite that profiles period piece films including news of upcoming films http www.recycledmoviecostumes.com ... one film DEFAULTSORT Period Piece Category Performing arts Category Historical fiction Category Period ... more details
Neolithic The Uruk period ca. 4000 to 3100 BC existed from the protohistory protohistoric Chalcolithic to Early Bronze Age period in the history of Mesopotamia , following the Ubaid period and succeeded by the Jemdet Nasr period . ref Sumer and the Sumerians, by Harriet E. W. Crawford, p 69 ref Named after the Sumerian city of Uruk , this period saw the emergence of urban life in Mesopotamia. It was followed by the Sumer Sumerian civilization . ref Sumer and the Sumerians, by Harriet E. W. Crawford, p 75 ref The late Uruk period 34th to 32nd centuries saw the gradual emergence of the cuneiform script and corresponds to the Early Bronze Age . File Cylinder seal king Louvre AO6620 n2.jpg thumb left Cylinder seal of the Uruk period, Louvre Museum These early city states had strong signs of government organization though social stratification was not strongly evident until very late in this period and the beginning of the Early Dynastic Period of Sumer Early Dynastic Period , beginning around 3100 BC , evident even in items such as cheap, mass produced beveled rim bowls which were made to be discarded. These bowls may have been handed out at community outings, such as large scale constructions. The cities grew to cover up to 250 acres 1 km and up to 10,000 20,000 people by the end of the period. Periodization is after archaeological layers at Uruk . Thus, Uruk XVIII XIV are not part of the Uruk period proper but are comprised by the Ubaid period . The Uruk period proper corresponds to the layers Uruk XIV IV, with the late phase Uruk IV lasting ca. 3300 3100 BC. Uruk III reaches up to 3000 BC and into the Early Dynastic period not to be confused with the Ur III period of the 21st century BC, where the numbering refers to royal dynasties, not archaeological layers . Footnotes reflist See also History of Sumer Predynastic Mesopotamian Culture Groups DEFAULTSORT Uruk Period ... di Uruk hu Uruk kult ra nl Urukperiode ja pl Okres Uruk ro Perioada Uruk sh Uru ki period ... more details
Unreferenced stub auto yes date December 2009 The Overton Period is the name given by archaeologist s to a division of prehistory in Prehistoric Britain Britain covering the period between 2000 BC and 1650 BC. It follows the Mount Pleasant Period and precedes the Bedd Branwen Period and is named after the typesite of the West Overton barrow cemetery in Wiltshire . During the Overton Period the first signs of Bronze Age burial practices appear in the archaeological record urned cremations and food vessel burials as well as the last stages of the use of Beaker People Beaker pottery. Rich Wessex culture burials emerged during the period such as that at Bush Barrow near Stonehenge . Characteristic metalworking types include the Amorico British dagger and the Falkland industries which demonstrate influences form the Continental Unetice culture . Category Periods of the British Bronze Age UK archaeology stub ... more details
The retention period of a document is an aspect of records management . It represents the period of time a document should be kept or retained . At the termination of the retention period, the document is usually destroyed. The term is generally used by accountants and tax professionals whose occupation involves dealing with legal documents that only need to remain in existence for a certain amount of time. The retention period varies for different types of records. For example, business incorporation documents have a permanent retention period meaning that they should be retained and never be destroyed , but receipts for tax deductible purchases by an individual taxpayer usually have a three year retention period and can often be safely discarded after that point. The length of the retention period is based on the likelihood that the document will be needed at some point in the future. Records that will serve no further purpose as determined by the length of their retention period are destroyed for space issues, usually by paper shredder s. Retention requirements are also established for a variety of electronic records in industry specific legislation such as the Sarbanes Oxley Act and regulatory bodies such as the Federal Energy Regulatory Commission in the United States . ref http www.csoonline.com read 070106 record retention.html The Seven Deadly Sins of Records Retention CSOonline.com Bot generated title ref References references tax stub Category Taxation Category Legal documents Category Data management de Aufbewahrungsfrist ... more details
Context date October 2009 Quiet period or waiting period has historically meant , a quiet period of time extended from the time a company files a SEC filing registration statement with the United States Securities and Exchange Commission SEC until SEC staff declared the registration statement effective. During that period, the United States securities law federal securities laws limited what information a company and related parties can release to the public. ref http www.sec.gov answers quiet.htm ref Under the rules of the Securities Act of 1933 , as modified June 29, 2005, electronic communications, including electronic road shows and information located on or hyperlink ed to an issuer s website are also governed. The rules changes of June 29, 2005 also included various changes which liberalize permitted offering activity and communications to allow more information for certain qualifying organizations. In business finance , a waiting period or quiet period is the time in which a company making an IPO must be silent about it, so as not to watered stock inflate the value of the stock artificially . It is also called the cooling off period . References refs See also Waiting period Category Corporations law Category Time finance stub ... more details
Unreferenced stub auto yes date December 2009 A waiting period is a period of time which one must wait disambiguation wait in order for a specific action to occur, after that action is request ed or mandate d. The term is commonly used in reference to gun control in the United States , where some U.S. states required a person to wait for a set number of days after buying or reserving a firearm at a dealer before actually taking Possession law possession of it. Waiting periods are also used for new insurance , particularly health insurance and flood insurance . Incidents which occur during this time are not claimable. The term may also refer to the time between the making of a claim and the payment of it, also called the elimination period . In business finance , a waiting period or quiet period is the time in which a company making an IPO must be silent about it, so as not to watered stock inflate the value of the stock artificially . It is also called the cooling off period . Other things potentially subject to waiting periods include divorce and merger proceedings. See also Waiting period Six Day War Queue disambiguation DEFAULTSORT Waiting Period Category Lawsuits Category Time Law term stub ... more details
In epidemiology , Period prevalence is the proportion of the population with a given disease or condition over a specific period of time. It could describe how many people in a population had a cold over the cold season in 2006, for example. It is expressed as a percentage of the population and can be described by the following formula Period prevalence ratio Number of cases that occurred in a given period Number of people in the population during this period The relationship between incidence rate , point prevalence ratio and period prevalence ratio is easily explicated via an analogy with photography. Point prevalence is akin to a flashlit photograph what is happening at this instant frozen in time. Period prevalence is analogous to a long exposure seconds, rather than an instant photograph the number of events recorded in the photo whilst the camera shutter was open. In a movie each frame records an instant point prevalence by looking from frame to frame one notices new events incident events and can relate the number of such events to a period number of frames incidence rate. See also Point prevalence References cite book author Gerstman, B.B. year 2003 title Epidemiology Kept Simple 2nd ed. location Hoboken NJ publisher Wiley Liss Category Epidemiology med stub Medical research studies ... more details
Unreferenced date March 2009 Payback period in capital budgeting refers to the period of time required for the return on an investment to repay the sum of the original investment. For example, a 1000 investment which returned 500 per year would have a two year payback period. The time value of money is not taken into account. Payback period intuitively measures how long something takes to pay for itself. All else being equal, shorter payback periods are preferable to longer payback periods. Payback period is widely used because of its ease of use despite recognized limitations, described below. The term is also widely used in other types of investment areas, often with respect to Efficient energy ... fluorescent light bulb may be described as having a payback period of a certain number of years ... operating costs. Although primarily a financial term, the concept of a payback period is occasionally extended to other uses, such as energy payback period the period of time over which the energy savings ... not be standardized or widely used. Payback period as a tool of analysis is often used because it is easy ... alone tool to compare an investment to doing nothing, payback period has no explicit criteria for decision making except, perhaps, that the payback period should be less than infinity . The payback period is considered a method of analysis with serious limitations and qualifications for its use ... present value and internal rate of return . An implicit assumption in the use of payback period is that returns to the investment continue after the payback period. Payback period does not specify ... to calculate the payback period, except the simple and unrealistic case of the initial cash outlay ... period an algorithm that is easlily applied in spreadsheets is needed. The typical algorithm reduces ... in the midst or at the end of the project lifetime. The modified payback period algorithm may ... cash flows are determined for each period. The modified payback period is calculated as the moment ... more details
disamb term refractory period Refractory period physiology , the amount of time it takes for an excitable membrane to be ready for a second stimulus once it returns to its resting state following excitation in the areas of biology, physiology, and cardiology. Refractory period sex , the recovery phase after orgasm during which it is physiologically impossible for an individual to have additional orgasms. Psychological refractory period , the delay in response to the second of two closely spaced psychological stimuli. The period of weeks or even months following a series of seizures during which seizures cannot be induced when referring to epilepsy , known as the Postictal state . disambig Category Neuroscience bg de Refrakt rphase Sexualit t es Periodo refractario lt Refrakcinis laikotarpis nl Refractaire periode ru ... more details
Run in period is a period before a clinical trial is commenced when no treatment is given. The clinical data from this stage of a trial are only occasionally of value but can serve a valuable role in screening medicine screening out ineligible or non compliant participants, in ensuring that participants are in a stable condition, and in providing baseline observations. A run in period is sometimes called a washout period if treatments that participants were using before entering the clinical trial are discontinued. See also Randomized controlled trial Regulatory requirement Safety monitoring Serious adverse event Standard Operating Procedures Standard treatment Study population Data Management References http www.websters online dictionary.org definitions run in period?cx partner pub 0939450753529744 3Av0qd01 tdlq&cof FORID 3A9&ie UTF 8&q run in period&sa Search 906 http www.websters online dictionary.org definitions run in period?cx partner pub 0939450753529744 3Av0qd01 tdlq&cof FORID 3A9&ie UTF 8&q run in period&sa Search 906 http www.medilexicon.com medicaldictionary.php?t 67147 http www.medilexicon.com medicaldictionary.php?t 67147 DEFAULTSORT Run In Period Category Clinical research ... more details
In medicine, the window period for a test designed to detect a specific disease particularly infectious disease is the time between first infection and when the test can reliably detect that infection. In antibody based testing, the window period is dependent on the time taken for seroconversion . The window period is important to epidemiology and safe sex strategies, and in blood donation blood and organ donation , because during this time, an infected person or animal cannot be detected as infected but may still be able to infect others. For this reason, the most effective disease prevention strategies combine testing with a waiting period longer than the test s window period. Examples HIV AIDS http aids.gov hiv aids basics prevention your hiv status testing window period U.S. Government site www.AIDS.gov informs The timeframe between when you are exposed to HIV to the time you test positive for HIV antibodies can be up to 3 6 months. This period of time is called a window period for HIV testing. On average, you may need to wait 2 to 8 weeks from the time of possible exposure to get ... window period Government site www.AIDS.gov, Testing Window Period ref HIV test Window period Related ... HIV being present results during the window period, an interval of three weeks to six months between ... a six month window is extremely rare with modern antibody testing. During the window period ... test. Antiretroviral therapy during the window period can delay the formation of antibodies and extend the window period beyond 12 months. This was not the case with patients that underwent ... window period of 6 months. Antibody tests may also yield false negative results in patients with X ... the window period or equivalence zone of Hepatitis B , both serological markers HBsAg Hepatitis B ... Harrison s Principles of Internal Medicine ed.17th ref See also Incubation period , the time between ... Serology med stub de Diagnostische L cke es Periodo de ventana fa id Window period ... more details
Unreferenced stub auto yes date December 2009 File .png thumb The Period of Disunity , also known as the Wei, Jin, and the Southern and Northern Dynasties , first disunion , was a long period of disunity and civil wars in China , lasting from 220 to 589. It followed the collapse of the Han Dynasty , when a large number of kingdoms had sprung up and fought for domination. Among the dynasties formed were the Three Kingdoms of Wei, Shu, and Wu 220&ndash 280 , the Jin Dynasty 265 420 Jin Dynasty and Sixteen Kingdoms , and the Southern and Northern Dynasties 420&ndash 589 . The fighting lasted for over 300 years. It was during this period that the popularity of Buddhism and Taoism grew. In 589 China finally saw the end of the Period of Disunity when the Sui Dynasty took control, and briefly reunited China proper .In the period of disunity China was divided into separate states. DEFAULTSORT Period Of Disunity Category Three Kingdoms Category Jin Dynasty Category Sixteen Kingdoms Category Southern and Northern Dynasties Category Wars involving Sui Dynasty China hist stub ko ja zh ... more details
In economics , a base period or reference period is a point in time used as a reference point for comparison with other periods. ref name uslabor cite web url http www.bls.gov bls glossary.htm title BLS Information date February 28, 2008 work Glossary publisher U.S. Bureau of Labor Statistics Division of Information Services accessdate 2009 05 05 ref ref name investopedia cite web url http www.investopedia.com terms b baseperiod.asp title Base Period publisher Investopedia accessdate 2009 05 05 ref It is generally used as a benchmark for measuring financial or economic data. ref name investw cite web url http www.investorwords.com 429 base period.html title base period publisher investorwords.com accessdate 2009 05 05 ref Base periods typically provide a point of reference for economic studies, consumer demand, and unemployment benefit claims. See also Bureau of Labor Statistics Economic indicator Gross domestic product Consumer price index References Reflist External links http www.bls.gov bls glossary.htm Base period in glossary , U.S. Bureau of Labor Statistics Division of Information Services http www.investopedia.com terms b baseperiod.asp Base Period , Investopedia Category Economics terminology Category Labor terms econ stub ... more details
Wiktionary A grace period is a time past the deadline for an obligation during which a late penalty that would have been imposed is waived. Grace periods, which can range from a number of minutes to a number of days or longer, depending on the context, can apply in various situations, including arrival at a Employment job , paying a Bill payment bill , for meeting government or legal requirement, or in many other situations. In law , a grace period is a time period during which a particular rule exceptionally does not apply, or only partially applies. For the grace period in patent patent law , see novelty patent . Types of grace periods Some companies and organizations do not view one who fulfills an obligation within a grace period any differently. In these situations, a subject who is past due, but who meets the obligation within the grace period receives equal treatment and no penalty or negative reputation. Other clients may receive a partial, less severe penalty. For example, many utility companies will charge a small late fee for those who do not pay their bill by the stated due date. However, the utility service provider will wait a longer time period before Turn off notice cutting off service . Some companies may suspend certain privileges during a grace period. For example, self storage services will often waive a late fee if the rent is not paid for up to several days ... home3.americanexpress.com corp consumerinfo grace.asp An extensive tutorial on the types of Grace Period ... period and maintain their reputation for timeliness. However, habitual procrastinate procrastinators may come to view the grace period as the actual deadline, and if, due to unforeseen circumstances ... the pros and cons of Grace Period ref Credit cards In personal finance , a grace period is the period ... information. A time period after a payment due date within which the fee can be paid without penalty ... off notice Grandfather clause Sunset clause References reflist DEFAULTSORT Grace Period Credit card ... more details
about the music album Orbital Period album Unreferenced date December 2009 The orbital period is the time ... further qualification in astronomy this refers to the sidereal period of an astronomical object, which ... around the Sun or other celestial objects The sidereal period is the temporal cycle that it takes ... orbital period. The synodic period is the temporal interval that it takes for an object to reappear ... as observed from Earth returns to the same illumination phase. The synodic period is the time ... linear order. The synodic period differs from the sidereal period due to the Earth s orbiting around the Sun. The draconitic period , or draconic period , is the time that elapses between two passages ... from the southern to the northern hemisphere. It differs from the sidereal period because ... typically precesses or recesses slowly in relation to orbital cycle. The anomalistic period is the time ... from the sidereal period because the object s semimajor axis typically advances slowly. Also, the Earth s tropical period or simply its year is the time that elapses between two alignments .... One Earth year has a slightly shorter interval than the solar orbit sidereal period because the inclined ... to calculate a planet s sidereal period from its synodic period. citation needed date January 2011 Using the abbreviations E the sidereal period of Earth a sidereal year , not the same as a tropical year P the sidereal period of the other planet S the synodic period of the other planet as seen from ... derives likewise math P frac1 frac1E frac1S math Generally, knowing the sidereal period of the other planet and the Earth, P and E , the synodic period can easily be derived math S frac1 left frac1E ... period is then simply a full circle divided by that apparent angular velocity. citation needed date ... 1.00001 365.1 In the case of a planet s natural satellite moon , the synodic period usually means the Sun synodic period. That is to say, the time it takes the moon to complete its illumination ... more details
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