Dynamical pattern formation during growth of a dual-species Bose-Einstein condensate

We simulate the growth of a dual species Bose-Einstein condensate using a Gross-Pitaevskii equation with an additional gain term giving rise to the growth. Such growth occurs during simultaneous evaporative cooling of a mixture of two gases. The ground state of a dual condensate is normally either a miscible mixture, or an immiscible phase with two spatially separated components. In a cigar trap the ground state typically consists of one component in the center, and the other component flanking it. Our simulations show that when the condensates are formed in a cigar trap and the mixture is phase separated, then the final state upon the end of the growth is generally far from the true ground state of the system. Instead it consists of multiple, interleaved bubbles of the two species. Such a pattern was observed recently in an experiment by Wieman's group at JILA, and our simulations are in good qualitative agreement with the experiment. We explain the pattern formation as due to the onset of modulation instability during growth, and study the dependence of the final state pattern on various parameters of the system

From Strategic Goal to Reality: The Development of the Myrtle Beach Invitational Basketball Tournament

The Myrtle Beach, South Carolina, area was selected to serve as one-time hosts for two tournaments in 2017: the ACC Women\u27s Basketball Tournament and the Puerto Rico Tip-Off Men\u27s College Basketball Tournament, when circumstances required those events to relocate on very short notice. Following the success of these two one-time events, the region sought to become a permanent host of an annual men\u27s college basketball tournament to be played in November or December. This manuscript examines the development process of this tournament and illustrates how tournament organizers addressed the most common elements found in such events

Categorical information influences conscious perception: An interaction between object-substitution masking and repetition blindness

The visual system is constantly bombarded with dynamic input. In this context, the creation of enduring object representations presents a particular challenge. We used object-substitution masking (OSM) as a tool to probe these processes. In particular, we examined the effect of target-like stimulus repetitions on OSM. In visual crowding, the presentation of a physically identical stimulus to the target reduces crowding and improves target perception, whereas in spatial repetition blindness, the presentation of a stimulus that belongs to the same category (type) as the target impairs perception. Across two experiments, we found an interaction between spatial repetition blindness and OSM, such that repeating a same-type stimulus as the target increased masking magnitude relative to presentation of a different-type stimulus. These results are discussed in the context of the formation of object files. Moreover, the fact that the inducer only had to belong to the same "type" as the target in order to exacerbate masking, without necessarily being physically identical to the target, has important implications for our understanding of OSM per se. That is, our results show the target is processed to a categorical level in OSM despite effective masking and, strikingly, demonstrate that this category-level content directly influences whether or not the target is perceived, not just performance on another task (as in priming).This research was supported by an Australian Research Council (ARC) Discovery Early Career Research Award (DE140101734) awarded to S.C.G., and an ARC Discovery Project (DP110104553) grant awarded to M.E, and a UK Medical Research Council (MRC) Career Development Award to J.A.G. The authors thank Reuben Rideaux for assistance with the data collection

Build an app and they will come? Lessons learnt from trialling the GetThereBus app in rural communities

Acknowledgements The research described here was supported by the award made by the RCUK Digital Economy programme to the dot.rural Digital Economy Hub; award reference: EP/G066051/1.Peer reviewedPostprin

Depression Moderates the Relationship between Trait Anxiety, Worry and Attentional Control in Melanoma Survivors

Cancer survivors commonly contend with concurrent cognitive difficulties such as problems with attention and concentration, and psychological distress, including anxiety and depression. However, the associations between attentional and emotional difficulties within the specific context of melanoma survivors remain relatively unexplored. Premised on attentional control theory, the current study employed a cross-sectional design to explore the interplay among trait anxiety (dispositional) and situational anxiety (cancer-related worry), depression and attentional control (ability to inhibit distractors and flexibly shift within and between tasks) in a sample of 187 melanoma survivors aged 18 to 58 years (Mage = 36.83 years, SDage = 5.44 years; 93% female). Data were analyzed using a moderated multiple regression, with anxiety, cancer worry and depression as predictors, and attentional control as the criterion variable. After statistically controlling for the variance of chemotherapy, we found that individuals with higher trait anxiety and higher cancer-related worry reported greater attentional control at low levels of depression, yet poorer attentional control at high depression, relative to individuals with low anxiety. Our findings suggest that anxiety and depression are differentially related to attentional control in melanoma survivors. The results provide a marker for clinicians addressing anxiety and depression in this population. Implications for primary healthcare are discussed.</p

Knowledge management research and practice:visions and directions

This editorial paper outlines key directions for knowledge management research and practice. The editorial team presents the results from a small survey of academics and practitioners about the present and future of knowledge management, and the editors include their own informed views on how this journal can help promote scholarly inquiry in the field

Should hedge funds be regulated?

The rapid growth of the hedge fund industry has attracted increasing attention from government regulators. In the United States, for example, the Securities and Exchange Commission(SEC) voted in October 2004 to require many hedge funds to officially register with the Commission beginning in 2006. Actions such as this have led to a widening debate over whether(or to what extent) government should play a role in the development of the hedge fund industry. To address this issue, The Program on Alternative Investments at Columbia Business School's Center on Japanese Economy and Business sponsored a symposium entitled "Should Hedge Funds Be Regulated?" which was held at New York's University Club in November 2004. U.S. SEC Commissioner Harvey Goldschmid, currently on leave from Columbia Law School, delivered the keynote speech, arguing in favor of the Commission's October decision. Following Commissioner Goldschmid's address, Program Director Mark Mason moderated a panel of leading experts from the business, government, and academic communities who debated the pros and cons of government involvement in the industry. These panelists included Franklin Edwards, Arthur F. Burns Professor of Free and Competitive Enterprise at Columbia Business School; John Gaine, President of the Managed Funds Association, a leading hedge fund industry group; Sudhir Krishnamurthi, Managing Director of Rock Creek Capital, a Washington, D.C.-based fund of hedge funds; and Nobuyuki Kinoshita, Director at the Financial Services Agency of Japan.This report covers the keynote address by Commissioner Goldschmid, together with the remarks of the expert panelists and selected exchanges with the audience. Columbia Business School Dean Glenn Hubbard and Center on Japanese Economy and Business Director Hugh Patrick delivered opening remarks, which are also reproduced in this report