947 research outputs found
The Cessation of Production Clause and Less Than Paying Production in the Secondary Term: Hoyt v. Continental Oil Co.
The Cessation of Production Clause and Less Than Paying Production in the Secondary Term: Hoyt v. Continental Oil Co.
The Effect of Visual Distinctiveness on Multiple Object Tracking Performance
Observers often need to attentively track moving objects. In everyday life, such objects are often visually distinctive. Previous studies have shown that tracking accuracy is increased when the targets contain a visual feature (e.g. a colour) not possessed by the distractors. Conversely, a gain in tracking accuracy was not observed when the targets differed from the distractors by only a conjunction of features (Makovski & Jiang, Visual Cognition, 17(1/2), 180). In this study we confirm that some conjunction targets have relatively little effect on tracking accuracy, but show that other conjunction targets can significantly aid tracking. For example, tracking accuracy is relatively high when the targets are small red squares and half the distractors are large red squares while the remaining distractors are small green squares. This seems to occur because the targets have a set of features (small and red) not shared by any one distractor. Attending to these features directs attention more to the targets than the distractors, thereby making the targets easier to track. Existing theories of attentive tracking cannot explain these results
Recommended from our members
The roots of score inflation: An examination of opportunities in two states' tests
Short-term safety outcomes of mastectomy and immediate pre-pectoral implant-based breast reconstruction:Pre-BRA prospective multicentre cohort study
Background: Prepectoral breast reconstruction (PPBR) has recently been introduced to reduce postoperative pain and improve cosmetic outcomes in women having implant-based procedures. High-quality evidence to support the practice of PPBR, however, is lacking. Pre-BRA is an IDEAL stage 2a/2b study that aimed to establish the safety, effectiveness, and stability of PPBR before definitive evaluation in an RCT. The short-Term safety endpoints at 3 months after surgery are reported here. Methods: Consecutive patients electing to undergo immediate PPBR at participating UK centres between July 2019 and December 2020 were invited to participate. Demographic, operative, oncology, and complication data were collected. The primary outcome was implant loss at 3 months. Other outcomes of interest included readmission, reoperation, and infection. Results: Some 347 women underwent 424 immediate implant-based reconstructions at 40 centres. Most were single-stage direct-To-implant (357, 84.2 per cent) biological mesh-Assisted (341, 80.4 per cent) procedures. Conversion to subpectoral reconstruction was necessary in four patients (0.9 per cent) owing to poor skin-flap quality. Of the 343 women who underwent PPBR, 144 (42.0 per cent) experienced at least one postoperative complication. Implant loss occurred in 28 women (8.2 per cent), 67 (19.5 per cent) experienced an infection, 60 (17.5 per cent) were readmitted for a complication, and 55 (16.0 per cent) required reoperation within 3 months of reconstruction. Conclusion: Complication rates following PPBR are high and implant loss is comparable to that associated with subpectoral mesh-Assisted implant-based techniques. These findings support the need for a well-designed RCT comparing prepectoral and subpectoral reconstruction to establish best practice for implant-based breast reconstruction
Recommended from our members
Patterns of relative relief, slope, and topographic texture in the north Atlantic Ocean
- …