n.

外周、周縁、周径

関: circumferential、outer boundary、periclinal

WordNet

the size of something as given by the distance around it (同)perimeter
the length of the closed curve of a circle
the boundary line encompassing an area or object; "he had walked the full circumference of his land"; "a danger to all races over the whole circumference of the globe" (同)circuit
lying around or just outside the edges or outskirts; "circumferential highways around cities"

PrepTutorEJDIC

外周,(特に)円周

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/10/19 15:08:45」(JST)

wiki en

[Wiki en表示]

The circumference (from Latin circumferentia, meaning "carrying around") of a closed curve or circular object is the linear distance around its edge.^[1] The circumference of a circle is of special importance in geometry and trigonometry. Informally "circumference" may also refer to the edge itself rather than to the length of the edge. Circumference is a special case of perimeter: the perimeter is the length around any closed figure, but conventionally "perimeter" is typically used in reference to a polygon while "circumference" typically refers to a continuously differentiable curve.

Circumference of a circle

Circle illustration with circumference (C) in black, diameter (D) in cyan, radius (R) in red, and centre or origin (O) in magenta. Circumference =

π

× diameter = 2 ×

π

× radius.

The circumference of a circle is the distance around it. The term is used when measuring physical objects, as well as when considering abstract geometric forms.

When a circle's diameter is 1, its circumference is

π

.

When a circle's radius is 1—called a unit circle—its circumference is 2

π

.

Relationship with Pi

The circumference of a circle relates to one of the most important mathematical constants in all of mathematics. This constant, pi, is represented by the Greek letter $π$ . The numerical value of $π$ is 3.14159 26535 89793 ... (see A000796). Pi is defined as the ratio of a circle's circumference $C$ to its diameter $d$ :

Or, equivalently, as the ratio of the circumference to twice the radius. The above formula can be rearranged to solve for the circumference:

The use of the mathematical constant $π$ is ubiquitous in mathematics, engineering, and science. The constant ratio of circumference to radius ${C}/{r}=2\pi$ also has many uses in mathematics, engineering, and science. These uses include but are not limited to radians, computer programming, and physical constants. The Greek letter $τ$ (tau) is sometimes used to represent this constant, but is not generally accepted as proper notation.

Circumference of an ellipse

The circumference of an ellipse can be expressed in terms of the complete elliptic integral of the second kind.

Circumference of a graph

In graph theory the circumference of a graph refers to the longest cycle contained in that graph.

References

^ San Diego State University (2004). "Perimeter, Area and Circumference" (PDF). Addison-Wesley.

External links

Numericana - Circumference of an ellipse
Circumference of a circle With interactive applet and animation

UpToDate Contents

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1. 小児における身体的診察：一般原則および標準的な測定 the pediatric physical examination general principles and standard measurements
2. 幼児および小児における小頭症：病因および評価 microcephaly in infants and children etiology and evaluation
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4. 成人の肥満：発生率、スクリーニング、および評価 obesity in adults prevalence screening and evaluation
5. 妊娠期間および出産予定日の出生前評価 prenatal assessment of gestational age and estimated date of delivery

English Journal

Time spent sitting during and outside working hours in bus drivers: A pilot study.

Varela-Mato V1, Yates T2, Stensel DJ1, Biddle SJ3, Clemes SA1.
Preventive medicine reports.Prev Med Rep.2015 Dec 3;3:36-9. doi: 10.1016/j.pmedr.2015.11.011. eCollection 2016.
This cross-sectional pilot study objectively measured sedentary and non-sedentary time in a sample of bus drivers from the East Midlands, United Kingdom. Participants wore an activPAL3 inclinometer for 7 days and completed a daily diary. Driver's blood pressure, heart rate, waist circumference and
PMID 26844184

Fetal tricuspid annulus plane systolic excursion (fTAPSE) at term - association with cerebroplacental ratio, birthweight and neonatal pH.

Morales-Roselló J1, Khalil A2, Perales-Marín A1.
The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians.J Matern Fetal Neonatal Med.2016 May;29(10):1636-41. doi: 10.3109/14767058.2015.1057810. Epub 2015 Jul 27.
OBJECTIVE: To study at term the association of the fetal tricuspid annulus plane systolic excursion (fTAPSE) with gestational age (GA), birthweight (BW), cerebroplacental ratio (CPR) and neonatal pH.METHODS: fTAPSE was evaluated in 309 fetuses in relation with GA and BW. Standardized values for feta
PMID 26135760

Lead, mercury, and cadmium in umbilical cord serum and birth outcomes in Chinese fish consumers.

Tang M1, Xu C1, Lin N1, Liu K2, Zhang Y3, Yu X3, Liu W4.
Chemosphere.Chemosphere.2016 Apr;148:270-5. doi: 10.1016/j.chemosphere.2016.01.058. Epub 2016 Jan 23.
Heavy metals such as lead (Pb), mercury (Hg), and cadmium (Cd) were detected in the islands of Yangtze River estuary and Hangzhou bay and their exposure caused potential health risk for the residents. To assess the exposure levels of Pb, Hg, and Cd, the umbilical cord serum samples were collected fr
PMID 26812370

Association of early life exposure to bisphenol A with obesity and cardiometabolic traits in childhood.

Vafeiadi M1, Roumeliotaki T2, Myridakis A3, Chalkiadaki G2, Fthenou E2, Dermitzaki E4, Karachaliou M2, Sarri K2, Vassilaki M2, Stephanou EG3, Kogevinas M5, Chatzi L2.
Environmental research.Environ Res.2016 Apr;146:379-87. doi: 10.1016/j.envres.2016.01.017. Epub 2016 Jan 25.
BACKGROUND: Bisphenol A (BPA) is a chemical used extensively worldwide in the manufacture of plastic polymers. The environmental obesogen hypothesis suggests that early life exposure to endocrine disrupting chemicals such as BPA may increase the risk for wt gain later in childhood but few prospectiv
PMID 26821262

Japanese Journal

Ventriculoperitoneal Shunt Outcomes among Infants

Murayama Hidehiko,Nakata Yusei,Kanazawa Akane,Watanabe Hirokazu,Shigemitsu Yusuke,Iwasaki Yuka,Tokorodani Chiho,Miyazawa Mari,Nishiuchi Ritsuo,Kikkawa Kiyoshi
Acta Medica Okayama 69(2), 87-93, 2015-04
… Of the 24 cases, the median (range) values for gestational age, birth weight, and birth head circumference (HC) were 37 (27-39) wks, 2,736 (686-3,788) g, and 35.3 (23.0-45.3) cm, respectively. …
NAID 120005595789

靴選びに貢献する簡易型自動足型計測システムの開発における基礎データの収集

天野勝弘,甲田希美,佐藤三友紀
関東学園大学紀要. Liberal arts 23, 1-15, 2015-03-31
… The purpose of this study is to investigate the relationship between the width of a foot at the metacarpophalangeal (MP) joint and the circumference around the MP joint. … The width and circumference data provide reasonable estimates of the three dimensional foot shape and therefore may be used by a reliable and inexpensive a shoes-selection system. …
NAID 110009888838

建部賢弘の円周率計算の精度決定について

菊地慶祐
湘南工科大学紀要 49(1), 29-45, 2015-03-31
… Takebe Katahiro, one of the most distinguished mathematicians of the Edo period, showed the ratio of the circumference of a circle to its diameter at the 42 digit value. …
NAID 110009886474

下肢の浮腫に対するエアマッサージの効果 : 圧力設定,マッサージモード,治療時間による違い

長谷場純仁,中尾周平,榊間春利,ハセバスミヒト,ナカオシュウヘイ,サカキマハルトシ,HASEBA Sumihito,NAKAO Shuhei,SAKAKIMA Harutoshi
鹿児島大学医学部保健学科紀要 25(1), 25-30, 2015-03
… We assessed the maximum pressure on the cuff of the lower leg interface, change in the maximum and minimum lower leg circumference, and change in the vital signs at the time of air massage. … The circumference was measured under 2 pressure grades (1 and 2) at 10, 20, and 30 minutes after the air massage, and the amount of change was estimated. … As the change in the lower leg circumference was large, the time required for air massage increased as well. …
NAID 120005607994

Related Pictures

★リンクテーブル★

リンク元	「circumferential」「周囲」「外周」「周縁」「outer boundary」
拡張検索	「chest circumference」

「circumferential」

　　[★]

adj.

周囲の、外周の

関: ambient, around, outer boundary, peri, surrounding; (adv.)circumferentially, circumference

「周囲」

　　[★]

英: surrounding、circumferential、ambient、peri、around, circumference
関: 環境、外周、約、外界

「外周」

　　[★]

英: circumference、outer boundary、circumferential
関: 周囲、周径、周縁

-circumference

「周縁」

　　[★]

英: circumference、periclinal
関: 外周、周径

「outer boundary」

　　[★]

外周

関: circumference、circumferential

「chest circumference」

　　[★]

胸囲

関: perithoracic

[1] San Diego State University (2004). "Perimeter, Area and Circumference" (PDF). Addison-Wesley.

匿名

検索

案内

案内

circumference