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Eye localization

Xem 1-15 trên 15 kết quả Eye localization
  • Episcleritis This is an inflammation of the episclera, a thin layer of connective tissue between the conjunctiva and sclera. Episcleritis resembles conjunctivitis but is a more localized process and discharge is absent. Most cases of episcleritis are idiopathic, but some occur in the setting of an autoimmune disease. Scleritis refers to a deeper, more severe inflammatory process, frequently associated with a connective tissue disease such as rheumatoid arthritis, lupus erythematosus, polyarteritis nodosa, Wegener's granulomatosis, or relapsing polychondritis.

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  • Bài báo trình bày một phương pháp xác định vị trí mắt người dựa trên việc kết hợp một bộ dò tìm mắt người (eye detector) và một bộ theo vết mắt người (eye tracker). Phương pháp này giúp cải tiến kết quả xác định vị trí mắt người nhờ bộ dò tìm cung cấp những ước lượng tốt nhất cho các vị trí ứng viên của mắt người, trong khi đó bộ theo vết sẽ tìm ra vị trí tốt nhất trong các vị trí ứng viên đó bằng việc sử dụng thêm thông tin về thời gian.

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  • or not a referring expression provides sufficient information with which to identify a unique referent. Such an approach relies on the provision of adequate contextual information, something which has been lacking in experiments w h i c h have been. In support of this claim, Rayner et al. collected r e a d i n g times and eye movement data for sentences which, syntactically speaking, allow two attachment sites for a prepositional phrase.

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  • As Bill Lubanovic and I were putting the final touches on this book, I overheard a conversation between two coworkers in our Cisco lab discussing Linux. The senior networking guru of the two made an interesting remark. He said that despite all his knowledge, he felt incomplete as a professional because he had never learned Linux. A moment later he and the other gentleman turned to me and looked me square in the eyes. I smiled and went on working. That evening, our director of Information Technology made an offhand remark to me during a conference that struck me as unusual.

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  • Melanoma and Other Tumors Melanoma is the most common primary tumor of the eye (Fig. 29-18). It causes photopsia, an enlarging scotoma, and loss of vision. A small melanoma is often difficult to differentiate from a benign choroidal nevus. Serial examinations are required to document a malignant pattern of growth. Treatment of melanoma is controversial. Options include enucleation, local resection, and irradiation. Metastatic tumors to the eye outnumber primary tumors. Breast and lung carcinoma have a special propensity to spread to the choroid or iris.

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  • Central Serous Chorioretinopathy This primarily affects males between the ages of 20 and 50. Leakage of serous fluid from the choroid causes small, localized detachment of the retinal pigment epithelium and the neurosensory retina. These detachments produce acute or chronic symptoms of metamorphopsia and blurred vision when the macula is involved. They are difficult to visualize with a direct ophthalmoscope because the detached retina is transparent and only slightly elevated.

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  • When our committee began in the fall of 2000 to evaluate the potential of the Metropolitan Medical Response System (MMRS) program to enhance local ability to respond to the consequences of weapons of mass destruction terrorism, I could not have imagined the tragedies that would befall us as committee members and as a society. Many of us on the committee have had personal losses from the assault on the World Trade Center and on our sense of physical and psychological safety.

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  • The eye lens is composed of fiber cells that differentiate from epithelial cells on its anterior surface. In concert with this differentiation, a set of proteins essential for lens function is synthesized, and the cellular organelles are degraded.

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  • Studies inknockoutmice support the involvement of alcohol dehydrogenases ADH1 and ADH4 in retinoid metabolism, althoughkineticswithretinoids arenotknown for themouse enzymes.Moreover, a roleof alcohol dehydrogenase (ADH) in the eye retinoid interconversions cannot be ascertained due to the lack of information on the kinetics with 11-cis-retinoids. We report here the kinetics of human ADH1B1, ADH1B2, ADH4, and mouse ADH1 and ADH4 with all-trans-, 7-cis-, 9-cis-, 11-cis- and 13-cis-isomers of retinol and retinal....

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  • The diagnosis? Eye-ear dissociation. The cause? Inappropriate training of the auditory brain cortex (see the previous Listening chapter). People can be perfect readers, but, at the same time, poor listeners. (The contrary – the ears understand, but the eyes cannot read – exists too: illiteracy.) To neuroscientists, this is not surprising; eyes and ears are different entry ports for distinct elaboration and storage sites in the brain. Training the visual brain areas at the back of the head (see Figure 3.3) has little influence on the performance of the auditory brain areas.

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  • .For this group portrait, I used the same one-light setup as for the group fight shot on page 90, but I held a longer exposure to soak up more ambient light. That gave the image a slightly brighter appearance, though still dark and moody overall. I asked the guys to stand in front of me in a group formation, and then turned the outside guys’ shoulders slightly inward to draw the viewer’s eye toward the center of the composition. I did when I was sixteen. I’d been photographing some local bands in Lindsay, Ontario, and building an online portfolio of images....

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  • The countries in which you are serving most likely inherited educational systems from Britain or France. The original goal of these systems was to provide education to the children of the local elites and to supply the colonial administrations and trading companies with clerical staff. Remarkable progress has been made since the former colonies achieved independence. Educational opportunities have been expanded at all levels as national leaders put a priory on productivity and economic growth.

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  • Touch localization is performed by light pressure for an instant with the examiner's fingertip or a wisp of cottonwool; the patient, whose eyes are closed, is required to identify the site of touch with the fingertip. Bilateral simultaneous stimulation at analogous sites (e.g., the dorsum of both hands) can be carried out to determine whether the perception of touch is extinguished consistently on one side or the other. The phenomenon is referred to as extinction.

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  • The bayside suburb of St Kilda has long been seen as Melbourne’s seedy underbelly, the equivalent of Sydney’s King’s Cross, London’s Soho, or New York’s Times Square. But as with most of those locations, a decade or two of gentrification has dimmed the red lights somewhat; these days, the only remaining street walkers left in St Kilda are likely to survive not so much because of the blind eye turned by the local vice squad, but due to the National Trust giving the hookers a heritage listing.

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  • Distribution To be effective, concentrations of an antibacterial agent must exceed the pathogen's MIC. Serum antibiotic concentrations usually exceed the MIC for susceptible bacteria, but since most infections are extravascular, the antibiotic must also distribute to the site of the infection. Concentrations of most antibacterial agents in interstitial fluid are similar to free-drug concentrations in serum.

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