We prove that there is a one-to-one correspondence between selfdual metrics on 3CP of positive scalar curvature admitting a non-trivial Killing field but not being conformal to LeBrun metrics, and a class of normal quartic surfaces in CP whose equations can be explicitly written down. As a consequence, we show that the moduli space of these self-dual metrics on 3CP is non-empty and diffeomorphi...

BBOSWELL: Boswell: What I admire in Ramsay is his continuing to be so young. Johnson: Why yes sir, it is to be admired. I value myself upon this, that there is nothing of the old man in my conversation. I am now sixty-eight and I have no more of it than at twenty-eight. Boswell: But sir, would you not wish to know old age? He who is never an old man does not know the whole of human life; for ol...

In recent years, there has been an explosion in the popularity of hackathons — creative, participant-driven meetings at which software developers gather for an intensive bout of programming, often organized in teams. Hackathons have tangible and intangible outcomes, such as code, excitement, learning, networking, and so on, whose relative merits are unclear. For example, a frequent complaint is...

practice and study of medicine in iran has a long and prolific history. iran has all characteristics of an indigenous culture which has so far discovered numerous natural products. unfortunately, scant research has been conducted on this system of medicine and ethnopharmacology of iran. gout is a historical disease that is still widespread all around the world. as numerous remedies used to be a...

[Purpose] The purpose of the study was to investigate the postural control and cognitive performance of older adults when stepping backward with and without a concurrent cognitive task. [Subjects and Methods] Thirty young adults and twenty-eight older adults (mean age=21.3 ± 1.2 and 72.2 ± 5.7 years, respectively) were recruited. Participants were asked to step backward and then maintain a sing...

This paper evaluates the role of collaborative learning in an Asian educational institution. The paper begins with a description of the current education landscape, particularly on learners of today which exhibit 21 century learning skills. The concept of collaborative learning is next described with an emphasis on Johnson and Johnson five key elements of collaborative learning. A research stud...

Marriages consist of shared experiences and interactions between husbands and wives that may lead to different impressions of the quality of the relationship. Few studies, unfortunately, have tested gender differences in the structure of marital quality, and even fewer studies have evaluated whether genetic and environmental influences on marital quality differ across gender. In this study, we ...

Eight and nine layer three dimensional photonic crystals with a defect designed specifically for accelerator applications have been fabricated. The structures were fabricated using a combination of nanofabrication techniques, including low pressure chemical vapor deposition, optical lithography, and chemical mechanical polishing. Limits imposed by the optical lithography set the minimum feature...