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Utilização de medidas biométricas para predizer características da carcaça de cabritos Saanen

Alejandro Yáñez, Enrique; Resende, Kleber Tomás de; Ferreira, Ângela Cristina Dias; Medeiros, Ariosvaldo Nunes; Silva Sobrinho, Américo Garcia da; Pereira Filho, José Morais; Teixeira, Izabelle Auxiliadora Molina de Almeida; Artoni, Silvana Martinez
Fonte: Sociedade Brasileira de Zootecnia Publicador: Sociedade Brasileira de Zootecnia
Tipo: Artigo de Revista Científica Formato: 1564-1572
POR
Relevância na Pesquisa
36.54%
Foram determinadas medidas biométricas de caprinos leiteiros com o objetivo de estimar equações que permitam predizer o peso e as características da carcaça de animais sob diferentes condições nutricionais. Realizou-se um experimento em duas fases, utilizando-se 27 cabritos machos da raça Saanen em cada uma, distribuídos nos tratamentos: alimentação à vontade, 30 e 60% de restrição. O peso vivo (PV) inicial foi de 5 kg na Fase 1 e 20 kg na Fase 2, abatendo-se os animais ao atingirem 20 e 35 kg de PV, respectivamente. Foram determinadas as medidas biométricas e avaliada a condição corporal no animal vivo e, após o abate e resfriamento de 24 horas, as medidas da carcaça. Estimaram-se o peso em jejum (PJ), o peso da carcaça fria (PCF) e a compacidade da carcaça, em função das medidas biométricas. O perímetro torácico e o comprimento corporal foram as medidas biométricas que apresentaram melhor ajuste para estimar o PJ, o PCF e a compacidade da carcaça e, por isso, são recomendados, por serem precisos, práticos e de fácil execução.; Biometric measures of dairy goats were taken to estimate equations for prediction of weight and carcass characteristics of animals with different nutritional conditions. An experiment was carried out into two phases...

Frontal sinus recognition for human identification

Falguera, Juan Rogelio; Falguera, Fernanda Pereira Sartori; Marana, Aparecido Nilceu
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Conferência ou Objeto de Conferência
ENG
Relevância na Pesquisa
46.29%
Many methods based on biometrics such as fingerprint, face, iris, and retina have been proposed for person identification. However, for deceased individuals, such biometric measurements are not available. In such cases, parts of the human skeleton can be used for identification, such as dental records, thorax, vertebrae, shoulder, and frontal sinus. It has been established in prior investigations that the radiographic pattern of frontal sinus is highly variable and unique for every individual. This has stimulated the proposition of measurements of the frontal sinus pattern, obtained from x-ray films, for skeletal identification. This paper presents a frontal sinus recognition method for human identification based on Image Foresting Transform and shape context. Experimental results (ERR = 5,82%) have shown the effectiveness of the proposed method.

Morphology and biometric of the vesicular and bulbourethral glands in castrated and non-castrated Santa Ines breed sheep

Neves, C. C.; Artoni, S. M B; Pacheco, M. R.; Feliciano, M. A R; Amoroso, L.; Melo, D. G.
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 115-120
ENG
Relevância na Pesquisa
36.43%
Introduction: The purpose of this paper is to determine the topography, biometry and light microscopy image of the vesicular and bulbourethral glands in order to analyze morphologic features of the accessory sexual glands in castrated and non-castrated animals. Materials and Methods: The morphology of the accessory sexual glands was investigated in 14 adult Santa Ines breed sheep, weighing 32 kg, on average. Six of them were castrated, and eight, non-castrated. For macroscopic study, the description of these two glands was carried out, as well as dissection and biometry study. Moreover, weight, length, height and width measurements were evaluated. For histological analysis, the vesicular and bulbourethral glands were sampled. Results: The topography of the reproductive glands was similar to bovine species. However, lower macroscopic measurements (p < 0,05) in the glands of the castrated sheep were evidenced when compared with the non-castrated ones. Characteristics such as shape of the glands, composition of the layer mucosa, the lamina propria, muscular, the excretory ducts and the adventitia were determined. Conclusion: Sheep castration promoted changes in the biometric measures of the glands, which were lower in castrated animals. The morphological and biometric characteristics of the vesicular and bulbourethral glands in sheep were determined.

Correlação entre medidas antropometricas e biometricas na inserção da sonda gastrica em pediatria; Correlation among anthropometric and biometric measurements on gastric tube insertion in pediatrics

Ana Raquel Medeiros Beck
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 28/08/2009 PT
Relevância na Pesquisa
46.45%
Até 50% dos tubos gástricos podem ser posicionados inadequadamente. A diversidade de técnicas e de pontos de referência utilizados para estimar a locação de sondas gástricas contribui para ocorrência de erros de posicionamento. JUSTIFICATIVA: Estudos internacionais caracterizam-se por incluir amostras reduzidas, grande amplitude nas faixas etárias e etnias específicas. OBJETIVOS: 1. Identificar o grau de correlação entre a medida do esôfago, obtida por endoscopia digestiva alta (EDA) e as medidas antropométricas e biométricas externas, tomadas em 153 crianças brasileiras, na faixa etária de 2 a 12 anos; 2. Desenvolver modelos de predição gerando equações para inserção de sondas na transição esôfago-gástrica (TEG) e no corpo do estômago (CE); 3. Comparar os valores do estudo com a medida NEX (distância do nariz, ao lóbulo da orelha até o apêndice xifóide) e com estudos internacionais. MÉTODO: Estudo analítico, observacional e transversal. Os dados foram coletados no período de janeiro de 2006 a janeiro de 2008. As medidas de biometria mensuradas foram: 1. Externas: arcada dentária superior-subnasal, subnasal-tragus, tragus-apêndice xifóide, apêndice xifóide-umbigo, subnasal-apêndice xifóide...

Biometric variability of goat populations revealed by means of principal component analysis

Pires,Luanna Chácara; Machado,Théa M. Medeiros; Araújo,Adriana Mello; Olson,Timothy A.; Silva,João Batista Lopes da; Torres,Robledo Almeida; Costa,Márcio da Silva
Fonte: Sociedade Brasileira de Genética Publicador: Sociedade Brasileira de Genética
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2012 EN
Relevância na Pesquisa
36.13%
The aim was to analyze variation in 12 Brazilian and Moroccan goat populations, and, through principal component analysis (PCA), check the importance of body measures and their indices as a means of distinguishing among individuals and populations. The biometric measurements were wither height (WH), brisket height (BH) and ear length (EL). Thorax depth (WH-BH) and the three indices, TD/WH, EL/TD and EL/WH, were also calculated. Of the seven components extracted, the first three principal components were sufficient to explain 99.5% of the total variance of the data. Graphical dispersion by genetic groups revealed that European dairy breeds clustered together. The Moroccan breeds were separated into two groups, one comprising the Drâa and the other the Zagora and Rhâali breeds. Whereas, on the one side, the Anglo-Nubian and undefined breeds were the closest to one another the goats of the Azul were observed to have the highest variation of all the breeds. The Anglo-Nubian and Boer breeds were similar to each other. The Nambi-type goats remained distinct from all the other populations. In general, the use of graphical representation of PCA values allowed to distinguish genetic groups.

Biometric hoof evaluation of athletic horses of show jumping, barrel, long rope and polo modalities

Sampaio,Breno Fernandes Barreto; Zúccari,Carmem Estefânia Serra Neto; Shiroma,Monica Yurie Machado; Bertozzo,Beatriz Ramos; Leonel,Ellen Cristina Rivas; Surjus,Ricardo da Silva; Gomes,Monique Maitê Malho; Costa e Silva,Eliane Vianna da
Fonte: UFBA - Universidade Federal da Bahia Publicador: UFBA - Universidade Federal da Bahia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2013 EN
Relevância na Pesquisa
36.24%
This study aimed to evaluate, through biometry, the forelimb hoof of horses participating in show jumping, barrel, long rope and polo competitions. Thirty subjects were assessed in relation to each competition (total of 120 animals). The linear measurements (cm) included the dorsal length of the toe; medial and lateral lengths of the quarter; medial and lateral heights of the quarter; lateral and medial lengths of the heel; medial and lateral heights of the heel; hoof length; hoof width; frog length; and frog width. The following angles (°) were measured: toe angle, pastern angle, heel angle and shoulder palette. The length of the horseshoe, coronet circumference and body weight were also assessed. With the use of hoof biometric evaluation was possible to identify the imbalances of forelimb in athletic horses and the most common were broken-backward hoof angle, with 96.7% of the animals showing this in the right forelimb (RFL) and 95.8% in the left forelimb (LFL); and contracted heels, with 95.0% in the RFL and 87.6% in the LFL. The competition type in which greatest numbers of hoof balance abnormalities were shown was the long rope, followed by the barrel. There were high frequencies of medial/lateral imbalance in all the sports. We conclude that animals used in functional tests have a high incidence of hoof balance abnormalities in the forelimbs.

The relationship between refractive and biometric changes during Edinger–Westphal stimulated accommodation in rhesus monkeys

Vilupuru, Abhiram S.; Glasser, Adrian
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /03/2005 EN
Relevância na Pesquisa
36.44%
Experiments were undertaken to understand the relationship between dynamic accommodative refractive and biometric (lens thickness (LT), anterior chamber depth (ACD) and anterior segment length (ASL=ACD+LT)) changes during Edinger–Westphal stimulated accommodation in rhesus monkeys. Experiments were conducted on three rhesus monkeys (aged 11·5, 4·75 and 4·75 years) which had undergone prior, bilateral, complete iridectomies and implantation of a stimulating electrode in the Edinger–Westphal (EW) nucleus. Accommodative refractive responses were first measured dynamically with video-based infrared photorefraction and then ocular biometric responses were measured dynamically with continuous ultrasound biometry (CUB) during EW stimulation. The same stimulus amplitudes were used for the refractive and biometric measurements to allow them to be compared. Main sequence relationships (ratio of peak velocity to amplitude) were calculated. Dynamic accommodative refractive changes are linearly correlated with the biometric changes and accommodative biometric changes in ACD, ASL and LT show systematic linear correlations with increasing accommodative amplitudes. The relationships are relatively similar for the eyes of the different monkeys. Dynamic analysis showed that main sequence relationships for both biometry and refraction are linear. Although accommodative refractive changes in the eye occur primarily due to changes in lens surface curvature...

BARI+: A Biometric Based Distributed Key Management Approach for Wireless Body Area Networks

Muhammad, Khaliq-ur-Rahman Raazi Syed; Lee, Heejo; Lee, Sungyoung; Lee, Young-Koo
Fonte: Molecular Diversity Preservation International (MDPI) Publicador: Molecular Diversity Preservation International (MDPI)
Tipo: Artigo de Revista Científica
Publicado em 16/04/2010 EN
Relevância na Pesquisa
36.13%
Wireless body area networks (WBAN) consist of resource constrained sensing devices just like other wireless sensor networks (WSN). However, they differ from WSN in topology, scale and security requirements. Due to these differences, key management schemes designed for WSN are inefficient and unnecessarily complex when applied to WBAN. Considering the key management issue, WBAN are also different from WPAN because WBAN can use random biometric measurements as keys. We highlight the differences between WSN and WBAN and propose an efficient key management scheme, which makes use of biometrics and is specifically designed for WBAN domain.

Biometric variability of goat populations revealed by means of principal component analysis

Pires, Luanna Chácara; Machado, Théa M. Medeiros; Araújo, Adriana Mello; Olson, Timothy A.; da Silva, João Batista Lopes; Torres, Robledo Almeida; Costa, Márcio da Silva
Fonte: Sociedade Brasileira de Genética Publicador: Sociedade Brasileira de Genética
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
36.13%
The aim was to analyze variation in 12 Brazilian and Moroccan goat populations, and, through principal component analysis (PCA), check the importance of body measures and their indices as a means of distinguishing among individuals and populations. The biometric measurements were wither height (WH), brisket height (BH) and ear length (EL). Thorax depth (WH-BH) and the three indices, TD/WH, EL/TD and EL/WH, were also calculated. Of the seven components extracted, the first three principal components were sufficient to explain 99.5% of the total variance of the data. Graphical dispersion by genetic groups revealed that European dairy breeds clustered together. The Moroccan breeds were separated into two groups, one comprising the Drâa and the other the Zagora and Rhâali breeds. Whereas, on the one side, the Anglo-Nubian and undefined breeds were the closest to one another the goats of the Azul were observed to have the highest variation of all the breeds. The Anglo-Nubian and Boer breeds were similar to each other. The Nambi-type goats remained distinct from all the other populations. In general, the use of graphical representation of PCA values allowed to distinguish genetic groups.

Evaluation of the Repeatability and the Reproducibility of AL-Scan Measurements Obtained by Residents

Kola, Mehmet; Duran, Hikmet; Turk, Adem; Mollamehmetoglu, Suleyman; Kalkisim, Ahmet; Erdol, Hidayet
Fonte: Hindawi Publishing Corporation Publicador: Hindawi Publishing Corporation
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
36.38%
Purpose. To assess the repeatability and reproducibility of ocular biometry and intraocular lens (IOL) power measurements obtained by ophthalmology residents using an AL-Scan device, a novel optical biometer. Methods. Two ophthalmology residents were instructed regarding the AL-Scan device. Both performed ocular biometry and IOL power measurements using AL-Scan, three times on each of 128 eyes, independently of one another. Corneal keratometry readings, horizontal iris width, central corneal thickness, anterior chamber depth, pupil size, and axial length values measured by both residents were recorded together with IOL power values calculated on the basis of four different IOL calculation formulas (SRK/T, Holladay, and HofferQ). Repeatability and reproducibility of the measurements obtained were analyzed using the intraclass correlation coefficient (ICC). Results. Repeatability (ICC, 0.872-0.999 for resident 1 versus 0.905-0.999 for resident 2) and reproducibility (ICC, 0.916-0.999) were high for all biometric measurements. Repeatability (ICC, 0.981-0.983 for resident 1 versus 0.995-0.996 for resident 2) and reproducibility were also high for all IOL power measurements (ICC, 0.996 for all). Conclusions. The AL-Scan device exhibits good repeatability and reproducibility in all biometric measurements and IOL power calculations...

Biometric variability of goat populations revealed by means of principal component analysis.

PIRES, L. C.; MACHADO, T. M. M.; ARAUJO, A. M. de; OLSON, T. A.; SILVA, J. B. L. da; TORRES, R. A.; COSTA, M. da S.
Fonte: Genetics and Molecular Biology, São Paulo, v. 35, n. 4, p. 777-782, 2012. Publicador: Genetics and Molecular Biology, São Paulo, v. 35, n. 4, p. 777-782, 2012.
Tipo: Artigo em periódico indexado (ALICE)
EN
Relevância na Pesquisa
36.13%
The aim was to analyze variation in 12 Brazilian and Moroccan goat populations, and, through principal component analysis (PCA), check the importance of body measures and their indices as a means of distinguishing among individuals and populations. The biometric measurements were wither height (WH), brisket height (BH) and ear length (EL). Thorax depth (WH-BH) and the three indices, TD/WH, EL/TD and EL/WH, were also calculated. Of the seven components extracted, the first three principal components were sufficient to explain 99.5% of the total variance of the data. Graphical dispersion by genetic groups revealed that European dairy breeds clustered together. The Moroccan breeds were separated into two groups, one comprising the Drâa and the other the Zagora and Rhâali breeds. Whereas, on the one side, the Anglo-Nubian and undefined breeds were the closest to one another the goats of the Azul were observed to have the highest variation of all the breeds. The Anglo-Nubian and Boer breeds were similar to each other. The Nambi-type goats remained distinct from all the other populations. In general, the use of graphical representation of PCA values allowed to distinguish genetic groups.; 2012

Human lens modeling and biometric measurement technique

Huang, Yanqiao (1977 - ); Moore, Duncan T.
Fonte: University of Rochester. Publicador: University of Rochester.
Tipo: Tese de Doutorado Formato: Number of Pages:xvii, 179 leaves
ENG
Relevância na Pesquisa
36.33%
Thesis (Ph. D.)--University of Rochester. Dept. of Biomedical Engineering, 2008.; This dissertation conducts theoretical and instrumental aspects of research aiming at extending knowledge and understanding of the optical design of the human eye. The first part of the thesis describes a newly constructed dynamic eye model that includes a gradient index (GRIN) lens to simulate eye accommodation. The GRIN profile of the crystalline lens is defined by a single continuous GRIN equation with optical power variability. In describing the lens accommodation process, different expansion coefficients are given to the lens nucleus and cortex to mimic lens dynamics. A relaxed state eye, a 4-D accommodated eye and a 10-D accommodated eye are simulated on a computer for studying and analyzing the first order and third order properties. This eye model can be further improved if giving accurate biometric measurement data on accommodating eyes. The second part of the thesis proposes an original interferometric technique that has potential for non-invasive ocular biometric measurements. This technique, termed spatial coherence interferometry, utilizes spatially incoherent monochromatic light as the illumination source, and employs the principle of low coherence interferometry to perform optical sectioning. Generalized coherence function for a multi-layer sample is derived and the theoretical axial longitudinal resolution is formulated. A spatial coherence interferometer with tunable coherence length is built...

Datos biométricos de cinco especies de murciélagos (Mammalia: Chiroptera) de la Región de Murcia (SE España); Biometric data of five bats species (Mammalia: Chiroptera) of the Region of Murcia (SE Spain)

Lisón Gil, Fulgencio
Fonte: Murcia: Servicio de Publicaciones de la Universidad de Murcia Publicador: Murcia: Servicio de Publicaciones de la Universidad de Murcia
Tipo: Artigo de Revista Científica Formato: application/pdf
SPA
Relevância na Pesquisa
46.47%
En los murciélagos, las medidas alares son elementos clave para identificar las especies y tienen serias implicaciones en su ecología. No obstante, dichas medidas pueden sufrir variaciones geográficas en el rango de distribución de las especies y en otros casos, puede existir un marcado dimorfismo sexual. En este trabajo se aportan las medidas alares de 5 especies de murciélagos de la Región de Murcia, con un total de 312 individuos analizados. Los resultados confirman que los individuos de nuestra región tienen medidas biométricas dentro del rango de variación de la especie, aunque para algunos valores se ha encontrado que los individuos de Murcia difieren en sus medidas de otros individuos ibéricos. Por otro lado, los resultados confirman la presencia de dimorfismo sexual para las medidas alares en Miniopterus schreibersii. Este trabajo resalta la necesidad de tener un mayor número de datos sobre biometría de los murciélagos ibéricos.; For bats, wing measurements are key elements for the identification of species and they have serious implications in the ecology of species. However, these measurements can suffer geographical variations inside the distribution of a species and, in other cases, sexual dimorphism happens. In this study...

Biometric relationships of ocular components in esotropic amblyopia; Relações entre medidas ecobiométricas dos componentes oculares em ambliopia por esotropia

Debert, Iara; Polati, Mariza; Jesus, Daniela Lima de; Souza, Eliane Cardoso dos Santos; Alves, Milton Ruiz
Fonte: CONSEL BRASIL OFTALMOLOGIA; SÃO PAULO Publicador: CONSEL BRASIL OFTALMOLOGIA; SÃO PAULO
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
36.13%
Purpose: To investigate the contribution of the individual ocular components, i.e. anterior chamber depth, lens thickness and vitreous chamber depth, to total axial length in patients with esotropic amblyopia. Methods: The study population consisted of 74 children, aged between 5 and 8 years: thirty-seven patients with esotropic amblyopia and 37 healthy volunteers (control group). The participants underwent a comprehensive ophthalmological examination, including cycloplegic refraction and A-scan ultrasonography. Anterior chamber depth, lens thickness, vitreous chamber depth and total axial length were recorded. Paired Student's t-tests were used to compare biometric measurements between amblyopic eyes and their fellow eyes and between right and left eyes in the control group. To evaluate the contribution of the ocular components to the total axial length, we report the individual components as a percentage of total axial length. Results: The comparison between amblyopic and fellow eyes regarding the individual contribution from ocular components to the total axial length revealed greater contribution from lens thickness (P=0.001) and smaller contribution from vitreous chamber depth (P=0.001) in amblyopic eyes, despite similar contribution from anterior chamber depth (P=0.434). The comparison between right and left eyes in the control group showed similar contributions from anterior chamber depth (P=0.620)...

Desempenho e medidas corporais de tourinhos da raça Nelore alimentados com cana-de-açúcar e diferentes fontes de óleo

Rosa, Bruna Laurindo
Fonte: Universidade Estadual Paulista (UNESP) Publicador: Universidade Estadual Paulista (UNESP)
Tipo: Dissertação de Mestrado Formato: ix, 63 f. : il.
POR
Relevância na Pesquisa
36.12%
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Pós-graduação em Zootecnia - FCAV; O objetivou do trabalho foi comparar dietas enriquecidas com fontes de óleo sobre o desempenho, características de carcaça e medidas corporais de trinta e cinco tourinhos da raça Nelore, com média de 402 kg e 18 meses de idade, terminados em confinamento. Foram utilizadas cinco dietas experimentais, isoprotéicas (13,5%), sendo quatro delas isoenergéticas (76,5% NDT) e uma denominada de controle (71,5% NDT), todas com relação volumoso:concentrado de 40:60 na matéria seca, sendo a cana-de-açúcar forrageira IAC-86-2480 utilizada como fonte exclusiva de volumoso. Foram efetuadas quatro tomadas de imagens ultrassônicas e 14 mensurações no início e final de cada período experimental, totalizando quatro medições, juntamente com peso vivo. O delineamento utilizado foi blocos casualizados com 5 tratamentos e 7 repetições, sendo as médias comparadas por contrastes ortogonais, e foram estimadas correlações de Pearson entre as medidas corporais, características produtivas e post mortem dos animais. O ganho médio diário e o peso final foram maiores para as dietas com adição de óleo...

Biometric relationships of ocular components in esotropic amblyopia

Debert,Iara; Polati,Mariza; Jesus,Daniela Lima de; Souza,Eliane Cardoso dos Santos; Alves,Milton Ruiz
Fonte: Conselho Brasileiro de Oftalmologia Publicador: Conselho Brasileiro de Oftalmologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/02/2012 EN
Relevância na Pesquisa
36.13%
PURPOSE: To investigate the contribution of the individual ocular components, i.e. anterior chamber depth, lens thickness and vitreous chamber depth, to total axial length in patients with esotropic amblyopia. METHODS: The study population consisted of 74 children, aged between 5 and 8 years: thirty-seven patients with esotropic amblyopia and 37 healthy volunteers (control group). The participants underwent a comprehensive ophthalmological examination, including cycloplegic refraction and A-scan ultrasonography. Anterior chamber depth, lens thickness, vitreous chamber depth and total axial length were recorded. Paired Student's t-tests were used to compare biometric measurements between amblyopic eyes and their fellow eyes and between right and left eyes in the control group. To evaluate the contribution of the ocular components to the total axial length, we report the individual components as a percentage of total axial length. RESULTS: The comparison between amblyopic and fellow eyes regarding the individual contribution from ocular components to the total axial length revealed greater contribution from lens thickness (P=0.001) and smaller contribution from vitreous chamber depth (P=0.001) in amblyopic eyes, despite similar contribution from anterior chamber depth (P=0.434). The comparison between right and left eyes in the control group showed similar contributions from anterior chamber depth (P=0.620)...

Soft-Biometrics: Soft-Computing for Biometric-Applications

Ruiz del Solar, Javier; Köppen, Mario; Franke, Katrin
Fonte: Universidade do Chile Publicador: Universidade do Chile
Tipo: Artículo de revista
EN
Relevância na Pesquisa
36.44%
Biometrics, the computer-based validation of a persons' identity, is becoming more and more essential due to the increasing demand for high-security systems. A biometric system testi es the authenticity of a speci c physiological or behavioral characteristic possessed by a user. New requirements over actual biometric systems as robustness, higher recognition rates, tolerance for imprecision and uncertainty, and exibility call for the use of new computing technologies. In this context soft-computing is increasingly being used in the development of biometric applications. Soft-Biometrics correspond to a new emerging paradigm that consists in the use of soft-computing technologies for the development of biometric applications. The aim of this paper is to motivate discussions on application of soft-computing approaches in speci c biometric measurements. The feasibility of soft-computing as a tool-set for biometric applications should be investigated. Finally, an application example on static signature veri cation is presented, providing evidence of soft-computing's impact in biometrics.; This research was supported by the join "Program of Scienti c Cooperation" of CONICYT (Chile) and BMBF (Germany), under the project "Face Recognition and Signature Veri cation using Soft- Computing" (CHL 01/011).

Biometric measurements in highly myopic eyes

Shen, Peiyang; Zheng, Y.-F.; Ding, Xian-Li; Liu, Bin; Congdon, Nathan; Morgan, Ian; He, Mingguang
Fonte: Elsevier Publicador: Elsevier
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
46.47%
Purpose: To assess the repeatability and accuracy of optical biometry (Lenstar LS900 optical low-coherence reflectometry [OLCR] and IOLMaster partial coherence interferometry [PCI]) and applanation ultrasound biometry in highly myopic eyes. Setting: Division of Preventive Ophthalmology, Zhongshan Ophthalmic Center, Guangzhou, China. Design: Comparative evaluation of diagnostic technology. Methods: Biometric measurements were taken in highly myopic subjects with a spherical equivalent (SE) of -6.00 diopters (D) or higher and an axial length (AL) longer than 25.0 mm. Measurements of AL and anterior chamber depth (ACD) obtained by OLCR were compared with those obtained by PCI and applanation A-scan ultrasound. Right eyes were analyzed. Repeatability was evaluated using the coefficient of variation (CoV) and agreement, using Bland-Altman analyses. Results: The mean SE was -11.20 D ± 4.65 (SD). The CoVs for repeated AL measurements using OLCR, PCI, and applanation ultrasound were 0.06%, 0.07%, and 0.20%, respectively. The limits of agreement (LoA) for AL were 0.11 mm between OLCR and PCI, 1.01 mm between OLCR and applanation ultrasound, and 1.03 mm between PCI and ultrasound. The ACD values were 0.29 mm, 0.53 mm, and 0.51 mm, respectively. These repeatability and agreement results were comparable in eyes with extreme myopia (AL ≥27.0 mm) or posterior staphyloma. The mean radius of corneal curvature was similar between OLCR and PCI (7.66 ± 0.24 mm versus 7.64 ± 0.25 mm)...

Frontal sinus recognition for human identification

Falguera, Juan Rogelio; Pereira, Sérgio; Marana, Aparecido Nilceu
Fonte: Spie - Int Soc Optical Engineering Publicador: Spie - Int Soc Optical Engineering
Tipo: Conferência ou Objeto de Conferência Formato: S9440-S9440
ENG
Relevância na Pesquisa
46.29%
Many methods based on biometrics such as fingerprint, face, iris, and retina have been proposed for person identification. However, for deceased individuals, such biometric measurements are not available. In such cases, parts of the human skeleton can be used for identification, such as dental records, thorax, vertebrae, shoulder, and frontal sinus. It has been established in prior investigations that the radiographic pattern of frontal sinus is highly variable and unique for every individual. This has stimulated the proposition of measurements of the frontal sinus pattern, obtained from x-ray films, for skeletal identification. This paper presents a frontal sinus recognition method for human identification based on Image Foresting Transform and shape context. Experimental results (ERR = 5,82%) have shown the effectiveness of the proposed method.

Medidas biométricas envolvendo a porção terminal do ducto torácico no nível cervical IV à esquerda: um estudo anatômico; Biometric measurements involving the terminal portion of the thoracic duct on left level IV: an anatomic study

Louzada, Andressa Cristina Sposato; Lim, Soo Jin; Yoshio, Alvaro Masahiro; Araújo-Neto, Vergilius José Furtado; Simões, Cesar Augusto; Matos, Leandro Luongo; Cernea, Claudio Roberto
Fonte: Universidade de São Paulo. Faculdade de Medicina Publicador: Universidade de São Paulo. Faculdade de Medicina
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Avaliado pelos pares Formato: application/pdf
Publicado em 05/03/2015 POR
Relevância na Pesquisa
46.41%
INTRODUÇÃO: No esvaziamento cervical do nível IV à esquerda, a porção final do ducto torácico (DT) pode ser lesada, aumentando significativamente a morbimortalidade pós-operatória. O melhor tratamento é a prevenção. Contudo, não há disponível na literatura medidas biométricas que auxiliem a identificação da desembocadura do DT. MATERIAIS E MÉTODOS: a desembocadura do DT foi identificada e distâncias úteis foram medidas em 25 cadáveres não-formolizados. Análise estatística foi realizada para verificar associações. RESULTADOS: a desembocadura do DT ocorreu na confluência jugulo-subclávia (CJS – 60%), na veia jugular interna esquerda (VJIE – 36%) e na veia braquiocefálica esquerda (4%). Uma associação estatisticamente significante foi encontrada entre a desembocadura na confluência jugulo-subclávia e a distância entre a VJIE e o músculo omo-hioide (Medida #1). Indivíduos cujo DT desemboca na CJS apresentaram a Medida #1 com mediana de 34.5±12.0mm, já os com desembocadura na VJIE apresentaram mediana de 22.3±8.7mm (p=0.015 – Student´s t-test). A regressão logística demonstrou que para cada aumento de 10mm na Medida #1 há uma chance de 1.12x de encontrar a desembocadura do DT na CJS (OR=1.12; CI95%:1...