نتایج جستجو برای: holes
تعداد نتایج: 37699 فیلتر نتایج به سال:
AIM To prospectively evaluate peripheral visual fields after vitrectomy for idiopathic macular holes. METHODS Goldmann perimetry was performed in 105 patients before, as well as 6 weeks and 12 months after macular hole surgery. RESULTS Only one patient (< 1%) with a stage III macular hole developed an asymptomatic postoperative visual field defect. The scotoma was wedge-shaped, peripherally...
Despite almost thirty years of research in the area of telework, the findings regarding outcomes remain equivocal (Bailey and Kurland, 2002). This research in progress hopes to advance understanding by identifying a key mechanism by which telework affects performance, specifically its influence on the social network properties of cohesion, power and structural holes. With knowledge of how the n...
Object-Oriented software structures represent multi-level characteristics. In this paper, two parameters -structural holes and closeness used in complex networks are introduced to study topological characteristics of software networks from multi-granularity perspective. By this method, software networks are observed and analyzed in three levels: package granularity, class granularity and method...
Goat warble-fly infestation is caused by przhevalskiana silenus (Diptra Oestridae) larvae and it is characterized by the presence of warble under the hide of the back and flanks of the animal. This study was carried out from March 2009 to March 2010 on the hides sent to the khorasn leather industries for grading, processing and tanning. This study demonstrated from 340,797 goat hides e...
AIMS To examine the effect of a unilateral full thickness macular hole on sensory and motor binocular function and to study recovery after successful surgical closure. METHODS Twenty eight consecutive patients undergoing surgery for a unilateral macular hole underwent orthoptic examination, including measurements of Titmus and TNO stereoacuity and motor fusion range before surgery. Twenty thr...
By studying the changes in employees’ networks and performance before and after the introduction of a social networking tool, I find that a structurally diverse network (low in cohesion and rich in structural holes) has a positive effect on work performance. The size of the effect is smaller than traditional estimates, suggesting that omitted individual characteristics may bias the estimated ne...
BACKGROUND Patients undergoing facedown positioning have to overcome physical and psychological challenges; however, their perspective and experience are rarely documented in the research literature. OBJECTIVES The objective of this study was to examine the content of a self-motivated diary written by a person who underwent 77 days of facedown positioning after macular hole surgery. Her narra...
Diffuse competition due to niche overlap between actors without (direct) ties with each other, constrains their structural autonomy. This is not dealt with in Burt’s mathematical model of his well-known structural holes theory. We fix his model by introducing a network measure of niche overlap. © 2002 Elsevier Science B.V. All rights reserved. JEL classification: L0; L1
The paper investigates the effects of collaboration networks on inventive productivity within an industrial research environment. A distinction is made between two kinds of network structures: structural holes offering information brokerage opportunities to individuals and network closures supporting co-specialization of individuals. Hypotheses regarding the effects of network positions on the ...
We presented a case of full-thickness macular hole progressing into lamellar macular hole as seen in the spectral domain optical coherence tomography. Short review of the literature regarding the pathogenesis of lamellar hole was presented and discussed.
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