On the mechanism of the visual threshold and visual adaptation.

نویسنده

  • G WALD
چکیده

Miscellaneous Publications .903..... ................... 903 Technical Papers The Primary Radical Yield in Irradiated Water: J. Rowbottom. 904 Three-Dimensional Movies without Special Equipment: R. Stuart Mackay. . 905 Incorporation of C14 into Various Carbohydrates of Tobacco Leaves after Different Periods of Photosynthesis in C1402: P _V. Vittorio, G. Krotkov, and G. B. Reed ..............................; 906 Communications A Radiocarbon Date of Peat from James Bay in Quebec: J. E. Potzger and Albert Courtemanche ................................. 908 An Ethical Problem for Scientists in a Divided World: Theodsus Dobzhakky......... 98...........; 908 A Chalenge to Law: Discussions by D. B. Rexworthy and LawsonM. McKenzie ....................... Need for a Standardized International Glossary of Terms in Botany: Divya Darshan Patt .910 Stable Colloidal Sulfur Solutions: M. W. Brenner-and Joseph L. Owades .911 Transplanta,bility of Tumors:, Discussions by Jacob Heiman and Robert H. Foulkkes.911 AlasforHuman Frailties! Joseph H. Friend ................................................. 912 Effects of Itrumil (New Antithyroid Agent) on the Histological Structure of the Rat Thyroid: Walter 0. Bradley .......................................... 912 A Simple Method for the Photographic Reproduction of Pencil' Drawings: E.J. Britten ..................................................... 913

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Just Noticeable Difference Estimation Using Visual Saliency in Images

Due to some physiological and physical limitations in the brain and the eye, the human visual system (HVS) is unable to perceive some changes in the visual signal whose range is lower than a certain threshold so-called just-noticeable distortion (JND) threshold. Visual attention (VA) provides a mechanism for selection of particular aspects of a visual scene so as to reduce the computational loa...

متن کامل

Evaluation of Diagnodent Accuracy in Detecting Approximal Caries in Primary Molars

Introduction: Detection of caries lesions on approximal surfaces of posterior teeth is difficult, since wide contact points hamper direct visual inspection. Due to the importance of the early detection of dental caries, the aim of this study is to compare the performance of different methods (visual, bitewing radiography and DIAGNOdent) in detecting approximal caries in primary molars. Methods:...

متن کامل

Graph-based Visual Saliency Model using Background Color

Visual saliency is a cognitive psychology concept that makes some stimuli of a scene stand out relative to their neighbors and attract our attention. Computing visual saliency is a topic of recent interest. Here, we propose a graph-based method for saliency detection, which contains three stages: pre-processing, initial saliency detection and final saliency detection. The initial saliency map i...

متن کامل

The adaptation of visual arts and architecture to with AN attitude toward Emmanuel Levinas’s Face- To- Face philosophy

One of problems of today’s society is the fact that the artist is away from the profession of other arts and various social groups, as well as disregard of art and artist by the above groups and the consequent weakness of art in the community. The importance of establishing social interactions and Face- To- Face of different social groups with the arts and artists, as well as artist with other ...

متن کامل

Recreation and design of motifs in Metkazin Ghelimche

Ghelimche Metkazin village in addition to the abundance of role, mentally woven and of a simple structure. The variety of animal and plant designs and understandable  geometric shapes and the creation of creative design during the drawing of motifs on the margin and the text and the way weavers adapted from the nature and environment of life and the re-imaging of images has led to a variety of ...

متن کامل

The effectiveness of cognitive-behavioral doll therapy on behavioral problems in children aged 9-7 years with visual impairment

Children with visual impairments suffer from major behavioral problems that affect the child's developmental process and adaptation to their environment. Therefore, this study was conducted to determine the effectiveness of puppetry and cognitive-behavioral therapy on internalized and externalized problems of children with visual impairment. The statistical population of this study included all...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Science

دوره 119 3104  شماره 

صفحات  -

تاریخ انتشار 1954