background: fracture load of implant-supported restorations is an important factor in clinical success. this study evaluated the effect of two techniques for screw access hole preparation on the fracture load of cement-screw retained implant-supported zirconia-based crowns. methods: thirty similar cement-screw retained implant-supported zirconia-based maxillary central incisor crowns were evalu...

AIMS To assess the effect that the duration of face-down posturing has on the outcome of macular hole surgery. METHODS A literature search was conducted to identify studies related to posturing duration following macular hole surgery. Where appropriate, studies were compared in a meta-analysis. The Mantel-Haenszel fixed-effect method was used to calculate the summary statistics. The main outcom...

In this paper, the author extends and further develops research and theory on the relationship between cultural taste and social networks by examining the effects of strength of preference in different cultural domains on the relative closure of personal networks. The results show that as the number of strong preferences held by an individual increases, so do the chances that any two of his or ...

nnovativeness nowledge heterogeneity etwork structure Structural holes theory suggests a variety of possible explanations for the empirically observed relationship between structural holes and individual managerial performance. However, little has been done to disentangle onemechanism fromanother. This paper empirically tests amediatedmoderationmodel that distinguishes between the five differen...

We describe a technique for combined fluid-gas exchange and phacoemulsification 2 weeks after macular hole surgery to achieve rapid visual rehabilitation. The procedure uses a standard cataract set and requires minimal vitreoretinal expertise. We encountered no significant complications and obtained long-term outcomes comparable to those with conventional management.

Through the examination of 11 intact interuniversity research project teams, this study examines the relationship between team leaders, team members, their communication networks (represented as structural holes), and performance. The study shows that in the conduct of their work, the team leaders bridged more structural holes than team members. Although team leaders demonstrated a higher level...

Reaming is a common finishing process for improving the drilled holes surface quality. Choosing an appropriate finishing method in drilling process has a significant effect on the surface quality of holes and in decreasing the process total cost and time. In this study, four similar holes were drilled on the AISI 4340 workpiece with different two pair feed rates. The drilling process was perfor...

We introduce the concept of the network architect to extend theory explaining how brokers create and manage structural holes in mediated markets. We argue that a broker’s social resources and dependence on the market, along with exogenous deal conditions, influence the broker’s motivations and willingness to make tradeoffs between long-term and short-term considerations when constructing deal n...

a microgravity survey was conducted for detecting the sink-holes at site of a power plant. pits, man-made tunnels and canals were considered as topographical effects and were corrected. to show the capability of the method two sites in a power plant have been surveyed for existing areas which can be affected by sink-holes overnight. ground shakes due to the running facilities were also preventi...