نتایج جستجو برای: hoa
تعداد نتایج: 870 فیلتر نتایج به سال:
Purpose: To compare the clinical outcomes of cataract surgery using ARTIS ® PL E (Cristalens Industrie, Lannion, France) intraocular lens (IOL) and conventional Tecnis ZCB00 (Johnson & Johnson Vision, Santa Ana, CA, USA) IOL.Methods: This retrospective study examined patients who underwent in-the-bag implantation either an (33 eyes, group A) or (45 B) IOL after phacoemulsification performed...
Keratoconic eyes are affected by an irregular optical blur induced by significant magnitude of higher order aberrations (HOAs). Although it is expected that correction of ocular aberrations leads to an improvement in visual performance, keratoconic eyes might not achieve the visual benefit predicted by optical theory because of long-term adaptation to poor retinal image quality. To investigate ...
PURPOSE To compare forward shift of posterior corneal surface and higher-order aberration (HOA) changes after LASIK, LASEK, and wavefront-guided LASEK surgery in moderate myopia METHODS One hundred eighty four eyes undergoing LASIK, LASEK and wavefront-guided LASEK with VISX STAR S4 were included in this study. The posterior corneal elevation was measured with Orbscan before, 2 and 4 months a...
OBJECTIVE Individual muscle activation patterns may be controlled by motor modules constructed by the central nervous system to simplify motor control. This study compared modular control of gait between persons with Parkinson's disease (PD) and neurologically-healthy older adults (HOA) and investigated relationships between modular organization and gait parameters in persons with PD. METHODS...
Homeowners associations (HOAs) have proliferated in recent decades as an important provider of local public services, particularly in fast growing states such as Florida. What explains their popularity, and specifically, their formation? We argue that the location and the timing of HOA formation are driven by demand-side, supply-side and institutional factors. Our data comes from the most compr...
Raw water from the Songhua River was treated by four types of coagulants, ferric chloride (FeCI3), aluminum sulfate (AI2(SO4)3), polyaluminum chloride (PACI) and composite polyaluminum (HPAC), in order to remove dissolved organic matter (DOM). Considering the disinfection byproduct (DBP) precursor treatability, DOM was divided into five chemical fractions based on resin adsorption. Trihalometha...
This investigation proposes a possibility to synthesise a true 3D sound field over loudspeakers. A new approach concerning the distance coding is presented. We tried to combine the benefits both using the Wave Field Synthesis (WFS) approach and Higher Order Ambisonics (HOA). Therefore the proposed system can be divided into two main parts. Firstly the determination of the driving functions of t...
Higher order Ambisonics (HOA) is an approach to the physical (re-)synthesis of a given wave field. It is based on the orthogonal expansion of the involved wave fields formulated for interior problems. This implies that HOA is per se only capable of recreating the wave field generated by events outside the listening area. When a virtual source is put inside the loudspeaker array, strong artifact...
Fokienia hodginsii (Cupressaceae) is distributed in montane evergreen forests in North and Central Vietnam and extends to southeastern China at 900 m above sea level. The species has been threatened in its area of distribution in recent years because of habitat destruction and over-exploitation. The genetic variation of F. hodginsii in Vietnam was investigated on the basis of eight ISSR markers...
Homeowners associations (HOAs) have proliferated in recent decades as an important provider of local public services, particularly in fast-growing states such as Florida. What explains their popularity and, specifically, their formation? We argue that the location and timing of an HOA’s formation are driven by demand-side, supply-side, and institutional factors. Our data come from the most comp...
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