OALib Journal期刊

ISSN: 2333-9721



匹配条件: “accommodation” ,找到相关结果约130条。
Fisiologia da acomoda??o e presbiopia
Werner, Leonardo;Trindade, Fernando;Pereira, Frederico;Werner, Liliana;
Arquivos Brasileiros de Oftalmologia , 2000, DOI: 10.1590/S0004-27492000000600011
Abstract: presbyopia is one of the earliest universal signs of aging and the basic pathophysiology involved in its development has been a matter of controversy for centuries. this article discusses many aspects of presbyopia by reviewing the literature on the multitude of age-related changes that occur in the eye.
The Sustainable Development of Miami: Tackling the Homeless Problem  [PDF]
Vaiva Kalesnikaite, Jean-Claude Garcia- Zamor
Current Urban Studies (CUS) , 2014, DOI: 10.4236/cus.2014.23019
Abstract: The article intends to provide more understanding of strategies intended to tackle homelessness presence in Miami-Date County as well as draw some lessons that could be learnt from experience. It is explanatory in nature and the main method used is extensive literature research as well as the official reports. It discusses the issue of homelessness in the light of sustainable communities; overviews the important strategies for tackling homelessness presence in the literature and practice; discusses the homelessness presence in Miami-Date County and the strategies and main actors that tackle it; discusses the sustainability of these strategies in the light of development of Miami-Dade County; and draws conclusions and suggestions for strategies of tackling homeless presence in Miami-Dade County.
Computer-animated model of accommodation and theory of reciprocal zonular action
Goldberg DB
Clinical Ophthalmology , 2011, DOI: http://dx.doi.org/10.2147/OPTH.S25983
Abstract: mputer-animated model of accommodation and theory of reciprocal zonular action Original Research (2812) Total Article Views Authors: Goldberg DB Published Date October 2011 Volume 2011:5 Pages 1559 - 1566 DOI: http://dx.doi.org/10.2147/OPTH.S25983 Daniel B Goldberg1,2 1Ophthalmology Department, Drexel College of Medicine, Philadelphia, PA, 2Eye Physicians, Little Silver, NJ, USA Abstract: This report presents a computer-animated model of the structures of accommodation based on new understanding of the anatomy of the zonular apparatus integrated with current understanding of the mechanism of accommodation. Analysis of this model suggests a new, consolidated theory of the mechanism of accommodation including a new theory of reciprocal zonular action. A three-dimensional animated model of the eye in accommodation and disaccommodation was produced in collaboration with an experienced medical animator. Current understanding of the anatomy of the zonule and the attachments of the vitreous zonule to the anterior hyaloid membrane is incomplete. Recent studies have demonstrated three components of the vitreous zonule: (1) anterior vitreous zonule (previously “hyalocapsular” zonule), which attaches the ciliary plexus in the valleys of the ciliary processes to the anterior hyaloid membrane in the region medial to the ciliary body and Weiger’s ligament; (2) intermediate vitreous zonule, which attaches the ciliary plexus to the anterior hyaloid peripherally; and (3) posterior vitreous zonule, which creates a sponge-like ring at the attachment zone that anchors the pars plana zonules. The pars plana zonules attach posteriorly to the elastic choroid above the ora serrata. Analysis of the computer-animated model demonstrates the synchronized movements of the accommodative structures in accommodation and disaccommodation. Utilizing model-based reasoning, it is shown that the posterior zonules attach to and provide traction to the anterior vitreous membrane and Weiger’s ligament. This model supports the concept that the ciliary body/zonule/anterior hyaloid complex contributes to the changes in the posterior lens capsule during accommodation, supporting an extralenticular component to accommodation and demonstrating an alternative to the “vitreous support” theories. There is a reciprocal action of the anterior zonules and the posterior zonules. During ciliary body contraction, the anterior zonules lose tension while the posterior zonules stretch and exert force on the posterior lens capsule playing a role in shaping the posterior lens thickness and curvature. During ciliary body relaxation, the posterior zonules lose tension as the lens flattens and is pulled back by the increasing tension of the anterior zonules.
Tülay ZORLU,Ay?e SA?S?Z
Middle East Technical University Journal of the Faculty of Architecture , 2010,
Amplitude of Accommodation and its Relation to Refractive Errors
Abraham Lekha,Kuriakose Thomas,Sivanandam Viswanathan,Venkatesan Nithya
Indian Journal of Ophthalmology , 2005,
Abstract: Aims: To evaluate the relationship between amplitude of accommodation and refractive errors in the peri-presbyopic age group. Materials and Methods: Three hundred and sixteen right eyes of 316 consecutive patients in the age group 35-50 years who attended our outpatient clinic were studied. Emmetropes, hypermetropes and myopes with best-corrected visual acuity of 6/6 J1 in both eyes were included. The amplitude of accommodation (AA) was calculated by measuring the near point of accommodation (NPA). In patients with more than ± 2 diopter sphere correction for distance, the NPA was also measured using appropriate soft contact lenses. Results: There was a statistically significant difference in AA between myopes and hypermetropes ( P <0.005) and between myopes and emmetropes ( P <0.005) in the 35-39 year age group. In the 40- 44 year age group, there was a significant difference in AA between emmetropes and hypermetropes ( P <0.0001), emmetropes and myopes ( P <0.01) and hypermetropes and myopes ( P <0.0001). In patients above 45 years of age there was no significant difference ( P >0.5). Conclusion: Our study showed higher amplitude of accommodation among myopes between 35 and 44 years compared to emmetropes and hypermetropes
New concepts in accommodation and presbyopia
Santos-Neto, Edson dos;Alves, Milton Ruiz;
Revista Brasileira de Oftalmologia , 2011, DOI: 10.1590/S0034-72802011000500008
Abstract: the authors conducted a review of classical and conflicting theories of accommodation and presbyopia. they make a critical comparison with the findings of magnetic resonance imaging (mri) that have been developed in recent decades. based on these studies, formulates a new approach on the subject, shifting the focus of the discussion of the lens to the posterior pole of the eye.
Students halls – humane lifestyle for students
Igor Seljak
Urbani Izziv , 2000,
Abstract: With the increasing number of students at the University of Ljubljana (Slovenia), the shortage of student’s accommodation in student’s halls has increased. Alongside the necessity for building new accommodation capacities an opportunity has emerged for the enforcement of new living standards that should replace outdated guidelines from the sixties. During the preparation of the project we analysed all the important elements of students accommodation in students halls. Analyses of the present conditions in existing halls were performed, including positive and negative elements. We also conducted a comparative research of student’s halls in various European countries. In conclusion a list of recommendations with real guidelines was prepared that could be used by investors when proposing new development of such buildings, as well as architects and planners.
La variación social de s y z como consecuencia de la inmigración rural en Granada
Elisabeth Melguizo Moreno
Sintagma : Revista de Lingüística , 2009,
Abstract: This article presents a comparative sociolinguistic study of three possible realisations of a phonological pair (ceceo, seseo and /s/ - // distinction) in two speech communities of the province of Granada: one consists of speakers born and resident in the city of Pinos Puente and the other is formed by people from such city who have definitely settled in the province capital city. Granada. In addition, the factors that condition the complex process of speech accommodation experienced by such speakers experiment will be discussed.
The Investigation of Students’s Accomodation and Nourishment Situation in Physical Education and Sport Academy
Kemal F?L?Z,Metin DEM?R
Journal of Kirsehir Education Faculty , 2004,
Abstract: The purpose of this study was to reveal the accommodation and nourishment situation of student attending in to school Physical Education and Sport Academy, at Gazi University . A questionnaire included in 20 questions was applied to randomly choosen 243 students from third and fourth year , 133 in male and 110 females . For the male students, it was found that the average age of the students answering to the questionnaire was 22,85 ± 2,03 and% 64 of selves n = 84) have been staying in rental house, % 64 of them (n = 27) have been staying with his/her familyand % 77,4 of these families have their own house. It is also found that considering daily meals the students (% 34) usualy prefer dinner ,and that 110 students have spent montly 126,636,400 TL for food while 23 students gave no response to their food expenditure. For the female students, it was found that the average age of the student answering to the questionnaire was 21,66 ± 1,94 and % 53,6 of them (n = 59) have been staying in rental house, % 24,4 of them (n = 27) have been staying with his/her family and % 74,5 of these families have their own house. It is also found that considering daily meals the students (% 32,4) usualy prefer dinner ,and that 89 students have spent montly 116,404,500 TL for food while 21 students gave no response to their food expenditure.In conclusion, it is found that both male and female students have a tendency to stay houses since the students have felt that staying in a house is more comfortable and economical as well.The calculations of descriptive statistics, standard deviation and percentage values of the data were statistically carried out.
Analysis on the Influence Factors of Wind Power Accommodation  [PDF]
Xiaofei Li, Yuehui Huang, Shuo Ma, Changjun Li, Xiaolei Ma
Journal of Power and Energy Engineering (JPEE) , 2015, DOI: 10.4236/jpee.2015.34023

With the increase of wind power capacity in China, the situation of curtailment of wind power is getting worse. An annual sequence production simulation model is established with maximum wind power consumption as the objective function. The calculation of specific power grid operation in 2013 verifies the precision of this model. The impact of different factors on wind power accommodation as well as the impact of power grid reserve, wind resources and load on wind power curtailment is analyzed. The calculation results quantify the impact of different factors from power system to the accommodation of wind power and provide reference to solving the problem of wind power curtailment.


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