¼±Åà - È­»ìǥŰ/¿£ÅÍŰ ´Ý±â - ESC

 
"statistical survey"¿¡ ´ëÇÑ °Ë»ö °á°úÀÔ´Ï´Ù. °Ë»ö °á°ú º¸´Â µµÁß¿¡ Tab ۸¦ ´©¸£½Ã¸é °Ë»ö âÀÌ ¼±Åõ˴ϴÙ.
´ëÇÑÀÇÇù ÀÇÇпë¾î »çÀü °Ë»ö À¯»ç °Ë»ö °á°ú : 15 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
  • statistical analysis
    Åë°èºÐ¼®
  • statistical constant
    Åë°è»ó¼ö
  • statistical error
    Åë°è¿ÀÂ÷
  • statistical inference
    Åë°èÃ߸®
  • statistical model
    Åë°è¸ðÇü
  • statistical significance
    Åë°èÀ¯ÀǼº
  • biological survey
    »ý¹°ÇÐÀûÁ¶»ç
  • community survey
    Áö¿ª»çȸÁ¶»ç
  • epidemiological survey
    ¿ªÇÐÁ¶»ç
  • field survey
    ÇöÁöÁ¶»ç
  • household sample survey
    °¡±¸Ç¥º»Á¶»ç
  • intervention survey
    °³ÀÔ¿¬±¸
  • morbidity survey
    ÀÌȯÀ²Á¶»ç
  • market survey
    ½ÃÀåÁ¶»ç
  • radiation survey instrument
    ¹æ»ç¼±Ç¥º»Á¶»ç±â±¸
´ëÇÑÀÇÇù Çʼö ÀÇÇпë¾îÁý »çÀü °Ë»ö À¯»ç °Ë»ö °á°ú : 3 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
  • survey
    Á¶»ç
  • statistical analysis
    Åë°èºÐ¼®
  • statistical test
    Åë°è°ËÁ¤
¿¾ ´ëÇÑÀÇÇù ÀÇÇпë¾î »çÀü °Ë»ö À¯»ç °Ë»ö °á°ú : 15 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
  • statistical analysis
    Åë°èºÐ¼®
  • statistical constant
    Åë°è»ó¼ö
  • statistical error
    Åë°è¿ÀÂ÷
  • statistical inference
    Åë°èÃ߸®
  • statistical model
    Åë°è¸ðÇü
  • statistical significance
    Åë°èÀ¯ÀǼº
  • statistical test
    Åë°è°ËÁ¤
  • biological survey
    »ý¹°ÇÐÀûÁ¶»ç
  • community survey
    Áö¿ª»çȸÁ¶»ç
  • disease frequency survey
    Áúº´ºóµµÁ¶»ç
  • epidemiological survey
    ¿ªÇÐÁ¶»ç
  • field survey
    ÇöÁöÁ¶»ç
  • household sample survey
    °¡±¸Ç¥º»Á¶»ç
  • intervention survey
    °³ÀÔ¿¬±¸
  • radiation survey instrument
    ¹æ»ç¼±Ç¥º»Á¶»ç±â±¸
¿¾ ´ëÇÑÀÇÇù 2 ÀÇÇпë¾î »çÀü °Ë»ö À¯»ç °Ë»ö °á°ú : 2 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
  • DSM-I=Diagnostic and Statistical Manual of Mental Disorders-I
    Á¤½ÅÀå¾Ö(º´)Áø´ÜÅë°èÆí¶÷ Á¦ 1ÆÇ
  • radiation survey instrument
    ¹æ»ç¼±Ç¥º»Á¶»ç±â±¸
¿¾ ´ëÇÑÀÇÇù 3 ÀÇÇпë¾î »çÀü °Ë»ö ¸ÂÃã °Ë»ö °á°ú : 1 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
  • statistical survey
    Åë°èÇÐÀû Á¶»ç(ÊÙÌ¡Ë×).
¿¾ ´ëÇÑÀÇÇù 3 ÀÇÇпë¾î »çÀü °Ë»ö À¯»ç °Ë»ö °á°ú : 15 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
  • cartogram =statistical map
    Åë°èµµ(̬˭ËÀ), Áöµµ(̤ËÀ).
  • statistical analysis
    Åë°èÀû ºÐ¼®(Ì¬Ë­Ëø ËÓËÛ).
  • statistical analysis
    Åë°èÀû ºÐ¼®
  • statistical constant
    Åë°è»ó¼ö(̬˭Ë×Ëà).
  • statistical control technique
    Åë°èÀû Á¶Á¤¹ý
  • statistical method
    Åë°èÀû ¹æ¹ý(ÊÙËÑËÑ).
  • statistical significance
    Åë°èÇÐÀû À¯ÀǼº(Ì¬Ë­Ì°ËøËôËôËÛ).
  • biological survey
    »ý¹°ÇÐÀû Á¶»ç(ðàÞÛ).
  • community survey
    Áö¿ª»çȸÁ¶»ç(ò¢æ´ÞäüåðàÞÛ)
  • epidemic survey
    À¯ÇàÁ¶»ç(ËôÌ´Ì¡Ë×).
  • epidemiological survey
    ¿ªÇÐÀû Á¶»ç.
  • field survey
    ÇöÁöÁ¶»ç.
  • intervention survey
    °³ÀÔ¿¬±¸.
  • market survey
    ½ÃÀåÁ¶»ç(ËàËöÌ¡Ë×).
  • radiation survey instrument
    ¹æ»ç¼±Ç¥º»Á¶»ç±â±¸
´ëÇÑ»ýÈ­ÇкÐÀÚ»ý¹°ÇÐȸ ¿ë¾î »çÀü °Ë»ö À¯»ç °Ë»ö °á°ú : 3 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
  • Kuhn statistical length
    Äï Åë°èÀû(÷ÖͪîÜ)±æÀÌ
  • statistical error
    ·£´ý ºØ±«¿ÀÂ÷(ÝÚÎÕè¦ó¬)
  • statistical segment
    ¾î¸²ºÐÀý(ÝÂï½)
KI ÀÇÇпë¾î »çÀü °Ë»ö À¯»ç °Ë»ö °á°ú : 3 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
  • statistical analysis
    Åë°èÀûºÐ¼®
  • field survey
    ÇöÁöÁ¶»ç
  • survey
    Á¶»ç
KMLE ÀÇÇоà¾î »çÀü À¯»ç °Ë»ö °á°ú : 5 ÆäÀÌÁö: 1
DSM Diagnostic & Statistical Manual
ICD   1) International (statistical) Classification of Diseases, (injuries & causes of death)<...
AS acetylstrophanthidin; acidified serum; acoustic schwannoma; acoustic stimulation; active sarcoidosis...
CSP carotid sinus pressure; cavum septi pellucidi; cell surface protein; cerebrospinal protein; Chartere...
CSU casualty staging unit; catheter specimen of urine; central statistical unit; clinical specialty unit...
KMLE ÀÚµ¿ÃßÃâ ÀÇÇоà¾î »çÀü À¯»ç °Ë»ö °á°ú : 5 ÆäÀÌÁö: 1
DSM Diagnostic and Statistical Manual
DSM III-R Diagnostic and Statistical Manual of Mental Disorders Third Edition Revised
MSA Metropolitan Statistical Area
SMSA Standard Metropolitan Statistical Area
S.A.S Statistical Analysis System
°æºÏ´ë Ä¡°ú´ëÇÐ ±¸°­³»°ú ±³½Ç »çÀü À¯»ç °Ë»ö °á°ú : 6 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
    ¼³¸í
  • biological survey
    »ý¹°ÇÐÀû Á¶»ç
  • field survey
    ÇöÁö Á¶»ç
  • statistic :

    statistical analysis

    Åë°èÀû ºÐ¼®
  • statistical method
    Åë°èÀû ¹æ¹ý
  • statistical surrey
    Åë°èÇÐÀû Á¶»ç
  • survey line
    ÃÖ´ë dz¸¢¼±, ½áº£À̼±
    ¼öº¹¹°ÀÇ °èȹµÈ »ðÀÔ·Î¿Í °ü·ÃÇØ ¿ÜÇüÀÇ ÃÖ´ë dzÀ±ºÎ¸¦ Ç¥½ÃÇÏ´Â ½áº£À̾î·Î ¸ðÇü»ó¿¡ ±×·ÁÁø ¼±.
CancerWEB ¿µ¿µ ÀÇÇлçÀü À¯»ç °Ë»ö °á°ú : 14 ÆäÀÌÁö: 1
horizontal survey <epidemiology> A study of a community, perhaps stratified by age, sex, ethnicity etc., but at one point in time or over a short time interval.
Although a snapshot, horizontal surveys of prevalence and intensity within different age classes of a community can nevertheless provide valuable information on the rate at which hosts acquire infection through time, provided that the host and parasite populations have remained approximately stable for a period of time (i.e. Stable endemicity). Same as cross-sectional study , converse of longitudinal study.
(05 Dec 1998)
skeletal survey A radiographic examination of all or selected parts of the skeleton, as for occult fractures, metastases, etc.
(05 Mar 2000)
survey 1. To inspect, or take a view of; to view with attention, as from a high place; to overlook; as, to stand on a hill, and survey the surrounding country. "Round he surveys and well might, where he stood, So high above." (Milton)
2. To view with a scrutinizing eye; to examine. "With such altered looks, . . . All pale and speechless, he surveyed me round." (Dryden)
3. To examine with reference to condition, situation, value, etc.; to examine and ascertain the state of; as, to survey a building in order to determine its value and exposure to loss by fire.
4. To determine the form, extent, position, etc, of, as a tract of land, a coast, harbor, or the like, by means of linear and angular measurments, and the application of the principles of geometry and trigonometry; as, to survey land or a coast.
5. To examine and ascertain, as the boundaries and royalties of a manor, the tenure of the tenants, and the rent and value of the same.
Origin: OF. Surveoir, surveer; sur, sor, over, E. Sur + veoir, veeir, to see, F. Voir, L. Videre. See Sur-, and Vision, and cf. Supervise.
Source: Websters Dictionary
(01 Mar 1998)
survey line A line scribed on an abutment tooth of a dental cast by means of a dental surveyor indicating the height of contour of the tooth according to a specific path of insertion, a line which serves as a guide in the proper location of various parts of a clasp assembly for a removable partial denture.
Synonym: clasp guideline, Cummer's guideline.
(05 Mar 2000)
field survey The planned collection of data among noninstitutionalised persons in the general population.
(05 Mar 2000)
models, statistical Statistical formulations or analyses which, when applied to data and found to fit the data, are then used to verify the assumptions and parameters used in the analysis. Examples of statistical models are the linear model, binomial model, polynomial model, two-parameter model, etc.
(12 Dec 1998)
statistical distributions The complete summaries of the frequencies of the values or categories of a measurement made on a group of items, a population, or other collection of data. The distribution tells either how many or what proportion of the group was found to have each value (or each range of values) out of all the possible values that the quantitative measure can have.
(12 Dec 1998)
statistical genetics The study of the applications of principles of statistics to problems in genetics.
(05 Mar 2000)
statistical model A formal representation for a class of processes that allows a means of analyzing results from experimental studies, such as the Poisson model or the general linear model; it need not propose a process literally interpretable in the context of the individual case.
(05 Mar 2000)
statistical significance Statistical methods allow an estimate to be made of the probability of the observed degree of association between variables, and from this the statistical significance can be expressed, commonly in terms of the P value.
(05 Mar 2000)
Neyman-Pearson statistical hypothesis A formal conjecture about the numerical value of a parameter to be tested exclusively in the light of an immediate set of data without attention to prior knowledge or convictions and ignoring other sets of evidence treated in a similar fashion. The answer is a statement not about whether the hypothesis is true but whether it is an acceptable explanation of the data or should be rejected in favour of another hypothesis.
(05 Mar 2000)
data interpretation, statistical Application of statistical procedures to analyze specific observed or assumed facts from a particular study.
(12 Dec 1998)
Diagnostic and Statistical Manual An American Psychiatric Association publication which classifies mental illnesses.Currently in its fourth edition (DSM-IV) and first published in 1952, the manual provides health practitioners with a comprehensive system for diagnosing mental illnesses based on specific ideational and behavioural symptoms. The DSM approach supplants older, less rigorous methods of diagnosis, and as such represents a major step forward for the field of psychiatry. It consists of five axes covering clinical syndromes, developmental and personality disorders, physical disorders, severity of psychosocial stressors, and global assessment of functioning. It is used primarily in the U.S.; elsewhere, the World Health Organization's International Classification of Diseases is preferred.
(05 Mar 2000)
factor analysis, statistical A set of statistical methods for analyzing the correlations among several variables in order to estimate the number of fundamental dimensions that underlie the observed data and to describe and measure those dimensions. It is used frequently in the development of scoring systems for rating scales and questionnaires.
(12 Dec 1998)
ÇÑ¿µ/¿µÇÑ »çÀü À¯»ç °Ë»ö °á°ú : 9 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
  • statistical
    Åë°è
  • statistical
    Åë°èÀûÀÎ;Åë°èÇлóÀÇ
  • statistical mechanics
    Åë°è ¿ªÇÐ
  • survey
    ÀÚ¼¼È÷º¸´Ù; °³°üÇÏ´Ù; Ãø·®ÇÏ´Ù
  • geological survey
    ÁöÁú Á¶»ç
  • longitudinal survey
    ÃßÀû Á¶»ç
  • survey
    °³°ü;Á¶»ç(Ç¥);Ãø·®(µµ)
  • survey
    Ãø·®ÇÏ´Ù
  • survey
    ¹Ù¶ó´Ùº¸´Ù;Àü¸ÁÇÏ´Ù;°³°üÇÏ´Ù;Á¶»çÇÏ´Ù;Ãø·®ÇÏ´Ù
ÀÌ ¾Æ·¡ ºÎÅÍ´Â °á°ú°¡ ¾ø½À´Ï´Ù.
KMLE ¾àǰ/ÀǾàǰ ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • Á¦Ç°¸í
    ¼ººÐ/ÇÔ·®
    ±¸ºÐ/º¸Çè±Þ¿©
KMLE ¾àǰ/ÀǾàǰ À¯»ç °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • Á¦Ç°¸í
    ¼ººÐ/ÇÔ·®
    ±¸ºÐ/º¸Çè±Þ¿©
¾Ë±â½¬¿î ÀÇÇпë¾îÇ®ÀÌÁý, ¼­¿ïÀÇ´ë ±³¼ö ÁöÁ¦±Ù, °í·ÁÀÇÇÐ ÃâÆÇ ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
¾Ë±â½¬¿î ÀÇÇпë¾îÇ®ÀÌÁý, ¼­¿ïÀÇ´ë ±³¼ö ÁöÁ¦±Ù, °í·ÁÀÇÇÐ ÃâÆÇ À¯»ç °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
´ëÇÑÀÇÇù ÀÇÇпë¾î »çÀü °Ë»ö ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
´ëÇÑÀÇÇù Çʼö ÀÇÇпë¾îÁý »çÀü °Ë»ö ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
¿¾ ´ëÇÑÀÇÇù ÀÇÇпë¾î »çÀü °Ë»ö ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
¿¾ ´ëÇÑÀÇÇù 2 ÀÇÇпë¾î »çÀü °Ë»ö ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
´ëÇÑÇØºÎÇÐȸ ÀÇÇпë¾î »çÀü °Ë»ö ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
´ëÇÑÇØºÎÇÐȸ ÀÇÇпë¾î »çÀü °Ë»ö À¯»ç °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
´ëÇѽŰæ¿Ü°úÇÐȸ ÀÇÇпë¾î »çÀü °Ë»ö ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
    ÇÑÀÚ
´ëÇѽŰæ¿Ü°úÇÐȸ ÀÇÇпë¾î »çÀü °Ë»ö À¯»ç °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
    ÇÑÀÚ
´ëÇѱâ»ýÃæÇÐȸ ÀÇÇпë¾î »çÀü °Ë»ö ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
´ëÇѱâ»ýÃæÇÐȸ ÀÇÇпë¾î »çÀü °Ë»ö À¯»ç °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
´ëÇÑ»ýÈ­ÇкÐÀÚ»ý¹°ÇÐȸ ¿ë¾î »çÀü °Ë»ö ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
KI ÀÇÇпë¾î »çÀü °Ë»ö ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
KMLE ÀÇÇоà¾î »çÀü ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
KMLE ÀÚµ¿ÃßÃâ ÀÇÇоà¾î »çÀü ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
ÀÇÇÐ³í¹® ¾àÀÚ(Pubmed/Entrez) °Ë»ö ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
Çѱ¹Ç¥ÁØÁúº´»çÀκзù ¾àÀÚ ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ÄÚµå
    ¿µ¹®
    ÇѱÛ
Çѱ¹Ç¥ÁØÁúº´»çÀκзù ¾àÀÚ À¯»ç °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ÄÚµå
    ¿µ¹®
    ÇѱÛ
°æºÏ´ë Ä¡°ú´ëÇÐ ±¸°­³»°ú ±³½Ç »çÀü ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
    ¼³¸í
CancerWEB ¿µ¿µ ÀÇÇлçÀü ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
MeSH(Medical Subject Headings) ¸ÂÃã °Ë»ö (http://www.nlm.nih.gov) °á°ú : 0 ÆäÀÌÁö: 1
MeSH(Medical Subject Headings) À¯»ç °Ë»ö (http://www.nlm.nih.gov) °á°ú : 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - Merriam-Webster's ÀÇÇлçÀü ¸ÂÃã °Ë»ö (https://www.merriam-webster.com) °á°ú: 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - Merriam-Webster's ÀÇÇлçÀü À¯»ç °Ë»ö (https://www.merriam-webster.com) °á°ú: 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - A.D.A.M. Medical Encyclopedia ¸ÂÃã °Ë»ö (http://www.nlm.nih.gov) °á°ú: 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - A.D.A.M. Medical Encyclopedia À¯»ç °Ë»ö (http://www.nlm.nih.gov) °á°ú: 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - MedlinePlus Health Topics ¸ÂÃã °Ë»ö (http://www.nlm.nih.gov) °á°ú: 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - MedlinePlus Health Topics À¯»ç °Ë»ö (http://www.nlm.nih.gov) °á°ú: 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - µå·¯±×ÀÎÆ÷ ¾àÇÐ Á¤º¸ ¸ÂÃã °Ë»ö (http://www.druginfo.co.kr) °á°ú: 0 ÆäÀÌÁö: 1
Á¦Ç°¸í
ÆÇ¸Å»ç
º¸ÇèÄÚµå ¼ººÐ/ÇÔ·®
±¸ºÐ/º¸Çè±Þ¿©
¿ÜºÎ ¸µÅ© - µå·¯±×ÀÎÆ÷ ¾àÇÐ Á¤º¸ À¯»ç °Ë»ö (http://www.druginfo.co.kr) °á°ú: 0 ÆäÀÌÁö: 1
Á¦Ç°¸í
ÆÇ¸Å»ç
º¸ÇèÄÚµå ¼ººÐ/ÇÔ·®
±¸ºÐ/º¸Çè±Þ¿©
¿ÜºÎ ¸µÅ© - WebMD.com Drug Reference ¸ÂÃã °Ë»ö (http://www.webmd.com) °á°ú: 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - WebMD.com Drug Reference À¯»ç °Ë»ö (http://www.webmd.com) °á°ú: 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - Drug.com Drugs by Medical Condition ¸ÂÃã °Ë»ö (http://www.drugs.com) °á°ú: 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - Drug.com Drugs by Medical Condition À¯»ç °Ë»ö (http://www.drugs.com) °á°ú: 0 ÆäÀÌÁö: 1
KMLE À¥ ¿ë¾î ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
KMLE À¥ ¿ë¾î À¯»ç °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
ÇÑ¿µ/¿µÇÑ »çÀü ¸ÂÃã °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
  • ¿µ¹®
    ÇѱÛ
WordNet ÀÏ¹Ý ¿µ¿µ »çÀü °Ë»ö °á°ú : 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - American Heritage Dictionary ¿µ¿µ»çÀü ¸ÂÃã °Ë»ö (https://www.ahdictionary.com) °á°ú: 0 ÆäÀÌÁö: 1
¿ÜºÎ ¸µÅ© - American Heritage Dictionary ¿µ¿µ»çÀü À¯»ç °Ë»ö (https://www.ahdictionary.com) °á°ú: 0 ÆäÀÌÁö: 1
ÅëÇÕ°Ë»ö ¿Ï·á