we aimed determine normal macular thickness by using cirrus hd-oct in  rasht city, iran. in this cross-sectional survey, 112 were selected with random sampling. all subjects underwent complete eye examinations. both eyes of each patient were evaluated. optional protocol was macular thickness map with macular cub 512×128 and the average thickness of the retina was determined in 9 etdrs regions. ...

Clusters of nosocomial infection often occur undetected, at substantial cost to the medical system and individual patients. We evaluated binary cumulative sum (CUSUM) and moving average (MA) control charts for automated detection of nosocomial clusters. We selected two outbreaks with genotyped strains and used resistance as inputs to the control charts. We identified design parameters for the C...

helpful discussions and the referees for thorough reviews of earlier drafts. 2 ABSTRACT Various estimators of slope,· intercept, and mean response in the simple linear regression problem are compared in terms of unbiasedness, efficiency, breakdown, and mean squared error. Theil's estimator of slope and two intercept estimators based on Theil's estimator are recommended for inclusion in nonparam...

Images captured in camera networks are potentially privacy sensitive and therefore need protection. A critical aspect is where protection is applied – after transmission at the data center or preferably already on the camera. In this work we take on-camera protection a step further and propose to make privacy protection and security inherent features of the image sensing unit. Already within th...

The rise of digital and mobile communications has recently made the world more connected and networked, resulting in an unprecedented volume of data flowing between sources, data centers, or processes. While these data may be processed in a centralized manner, it is often more suitable to consider distributed strategies such as diffusion as they are scalable and can handle large amounts of data...

BACKGROUND Aseptic loosening is one of the greatest problems in hip replacement surgery. The rotation center of the hip is believed to influence the longevity of fixation. The aim of this study was to compare the influence of cemented and cementless cup fixation techniques on the position of the center of rotation because cemented cup fixation requires the removal of more bone for solid fixatio...

PURPOSE To determine the aberrations induced in wavefront-guided laser refractive surgery due to shifts in pupil center location from when aberrations are measured preoperatively (over a dilated pupil) to when they are corrected surgically (over a natural pupil). SETTING Center for Visual Science and Department of Ophthalmology, University of Rochester, Rochester, New York, USA. METHODS Shi...

PURPOSE To determine the amount of static and dynamic pupil decentrations that occur during laser refractive surgery. SETTING The Center of Visual Science and the Department of Ophthalmology, University of Rochester, Rochester, New York, USA. METHODS The surgeon's accuracy in aligning the pupil center with the laser center axis was measured when engaging the eye-tracker in 17 eyes receiving...

OBJECTIVES The present study was conducted to examine whether the standardized uptake value (SUV) may be affected by the spatial position of a lesion in the radial direction on positron emission tomography (PET) images, obtained via two methods based on time-of-flight (TOF) reconstruction and point spread function (PSF). METHODS A cylinder phantom with the sphere (30 mm diameter), located in ...

In this paper we define a new labeling called skolem odd difference mean labeling and investigate skolem odd difference meanness of some standard graphs. Let G = (V,E) be a graph with p vertices and q edges. G is said be skolem odd difference mean if there exists a function f : V (G) → {0, 1, 2, 3, . . . , p + 3q − 3} satisfying f is 1−1 and the induced map f : E(G) → {1, 3, 5, . . . , 2q−1} de...