Does Long-Term Macrophyte Management in Lakes Affect Biotic Richness and Diversity?

We hypothesize that the richness and diversity of the biota in Lake Moraine (42°50’47”N, 75°31’39”W) in New York have been negatively impacted by 60 years of macrophyte and algae management to control Eurasian watermilfoil ( Myriophyllum spicatum L.) and associated noxious plants. To test this hypothesis we compare water quality characteristics, richness and selected indicators of plant diversity, zooplankton, benthic macroinvertebrates and fish in Lake Moraine with those in nearby Hatch Lake (42°50’06”N, 75°40’67”W). The latter is of similar size and would be expected to have similar biota, but has not been subjected to management. Measurements of temperature, pH, oxygen, conductivity, Secchi transparency, calcium, total phosphorus and nitrites + nitrates are comparable. Taxa richness and the diversity indices applied to the aquatic macrophytes are similar in both lakes. (PDF has 8 pages.

Explanation of the Gibbs paradox within the framework of quantum thermodynamics

The issue of the Gibbs paradox is that when considering mixing of two gases within classical thermodynamics, the entropy of mixing appears to be a discontinuous function of the difference between the gases: it is finite for whatever small difference, but vanishes for identical gases. The resolution offered in the literature, with help of quantum mixing entropy, was later shown to be unsatisfactory precisely where it sought to resolve the paradox. Macroscopic thermodynamics, classical or quantum, is unsuitable for explaining the paradox, since it does not deal explicitly with the difference between the gases. The proper approach employs quantum thermodynamics, which deals with finite quantum systems coupled to a large bath and a macroscopic work source. Within quantum thermodynamics, entropy generally looses its dominant place and the target of the paradox is naturally shifted to the decrease of the maximally available work before and after mixing (mixing ergotropy). In contrast to entropy this is an unambiguous quantity. For almost identical gases the mixing ergotropy continuously goes to zero, thus resolving the paradox. In this approach the concept of ``difference between the gases'' gets a clear operational meaning related to the possibilities of controlling the involved quantum states. Difficulties which prevent resolutions of the paradox in its entropic formulation do not arise here. The mixing ergotropy has several counter-intuitive features. It can increase when less precise operations are allowed. In the quantum situation (in contrast to the classical one) the mixing ergotropy can also increase when decreasing the degree of mixing between the gases, or when decreasing their distinguishability. These points go against a direct association of physical irreversibility with lack of information.Comment: Published version. New title. 17 pages Revte

The Ursinus Weekly, February 12, 1951

New high set by B-list group as 106 qualify • Y schedules chats, conducts retreat • Paynter-Keller production scores hit in Curtain Club group presentation • Play contest in progress; May Day heads named • Alumna to speak at girls\u27 Color Day program Thursday • Eight enter Ursinus for Spring term • Forum to feature Indian editor at next session • Speak Easy title of Ruby show • TV auditions slated • 3 graduate school test dates released • Ursinus to enter competition in intercollegiate bridge • Dr. Miller to give IRC summary of Department of State conferences attended in recent weeks • Washington trip planned by PAC • Meistersingers give concert • Editorial: Attend forums? • Senior class discusses Ruby and after-game record dance • Red Cross to organize • Juniors discuss bands • French Club to present dance Wednesday night in music studio • Thespians to discuss play • Dictionary of Folklore and Legend includes work of Dr. Phillips on Pennsylvania Dutch • Behind-scenes Dean handles transcripts, records dating from 1873, in routine work • Men reveal resignation toward draft situation • Alumnae back and Duryea\u27s got \u27em; Grads return in role of preceptresses • Coach Seeders drives Bruins toward coveted Middle Atlantic championship • Grizzlies win and lose in non-league contests • Bears edge Blue Hens for loop lead, 62-60 • Mermaids triumph over Drexel, 35-22 • Belles bag first over Bryn Mawr • Brodbeck I & II, Stine lead • Dr. Baker chooses poetry of A. E. Housman for readinghttps://digitalcommons.ursinus.edu/weekly/1558/thumbnail.jp

The Ursinus Weekly, February 12, 1951

New high set by B-list group as 106 qualify • Y schedules chats, conducts retreat • Paynter-Keller production scores hit in Curtain Club group presentation • Play contest in progress; May Day heads named • Alumna to speak at girls\u27 Color Day program Thursday • Eight enter Ursinus for Spring term • Forum to feature Indian editor at next session • Speak Easy title of Ruby show • TV auditions slated • 3 graduate school test dates released • Ursinus to enter competition in intercollegiate bridge • Dr. Miller to give IRC summary of Department of State conferences attended in recent weeks • Washington trip planned by PAC • Meistersingers give concert • Editorial: Attend forums? • Senior class discusses Ruby and after-game record dance • Red Cross to organize • Juniors discuss bands • French Club to present dance Wednesday night in music studio • Thespians to discuss play • Dictionary of Folklore and Legend includes work of Dr. Phillips on Pennsylvania Dutch • Behind-scenes Dean handles transcripts, records dating from 1873, in routine work • Men reveal resignation toward draft situation • Alumnae back and Duryea\u27s got \u27em; Grads return in role of preceptresses • Coach Seeders drives Bruins toward coveted Middle Atlantic championship • Grizzlies win and lose in non-league contests • Bears edge Blue Hens for loop lead, 62-60 • Mermaids triumph over Drexel, 35-22 • Belles bag first over Bryn Mawr • Brodbeck I & II, Stine lead • Dr. Baker chooses poetry of A. E. Housman for readinghttps://digitalcommons.ursinus.edu/weekly/1558/thumbnail.jp

Questionnaire study to gain an insight into the manufacturing and fitting process of artificial eyes in children: an ocularist perspective

Purpose To gain an insight into the manufacturing and fitting of artificial eyes in children and potential improvements to the process. Method An online qualitative survey was distributed to 39 ocularists/prosthetists in Europe and Canada. Participants were recruited through purposive sampling, specifically maximum variation sampling from the researcher’s contacts and an online search. Results The findings highlighted the current impression technique as being the most difficult yet most important part of the current process for both the ocularist and child patient. Negatively affecting obtaining a good impression, the child patients distress can be reduced by their parents by providing encouragement, reassurance, practicing the insertion and removal of the artificial eye and being matter of fact. Whilst improvements to the current process provided mixed views, the incorporation of current technology was perceived as not being able to meet the requirements to produce aesthetically pleasing artificial eyes. Conclusion The current artificial eye process can be seen as an interaction with its success being dependent on the child patient’s acceptance and adjustment which is dependent on the factors associated to the process. Investigation into the needs of the patient and whether technology can improve the process are the next steps in its advancement

Bostonia: The Boston University Alumni Magazine. Volume 32

Founded in 1900, Bostonia magazine is Boston University's main alumni publication, which covers alumni and student life, as well as university activities, events, and programs

Political Regimes and Sovereign Credit Risk in Europe, 1750-1913

This article uses a new panel data set to perform a statistical analysis of political regimes and sovereign credit risk in Europe from 1750 to 1913. Old Regime polities typically suffered from fiscal fragmentation and absolutist rule. By the start of World War I, however, many such countries had centralized institutions and limited government. Panel regressions indicate that centralized and?or limited regimes were associated with significant improvements in credit risk relative to fragmented and absolutist ones. Structural break tests also reveal close relationships between major turning points in yield series and political transformations

The Ursinus Weekly, January 8, 1951

Group attends NSA meeting during holiday • French Club conducts meeting and lists plans • Final examinations to continue January 18-26; Schedule posted • Chess Club to play • Rice to give talk on Atlantic Union • Sophomore class to sponsor square dance Friday night • President McClure issues statement on present draft situation at Ursinus • College offers new two-term Summer school • Graduate featured in magazine story • Curtain Club announces next group production • Students participate in television show • Forty attend Philly luncheon of Ursinus Women\u27s Club • New Rosicrucians feted • Miller appears on Quaker City TV University • Ursinus grad to hold state executive office • Opinions on Korea: Ursinus representatives speak their minds • Double-duty secretary gowns directors for processions, manages switchboard • Downpour predicted; Waterproof notes, dry textbooks, precautions prescribed • Prognostication shows alteration of future strife in college life • Bears upset F&M 73-55 in pre-holiday thriller • Grapplers win opener over Muhlenberg, 23-9 • Grizzlies absorb second cage loss to Pharmacy five • Bruins top Drexel 80-74 in initial league contest • Trials highlight MSGA pre-vacation meetinghttps://digitalcommons.ursinus.edu/weekly/1556/thumbnail.jp

Best practices and software for themanagement and sharing of camera trap data for small and large scales studies

Camera traps typically generate large amounts of bycatch data of non-target species that are secondary to the study’s objectives. Bycatch data pooled from multiple studies can answer secondary research questions; however, variation in field and data management techniques creates problems when pooling data from multiple sources. Multi-collaborator projects that use standardized methods to answer broad-scale research questions are rare and limited in geographical scope. Many small, fixed-term independent camera trap studies operate in poorly represented regions, often using field and data management methods tailored to their own objectives. Inconsistent data management practices lead to loss of bycatch data, or an inability to share it easily. As a case study to illustrate common problems that limit use of bycatch data, we discuss our experiences processing bycatch data obtained by multiple research groups during a range-wide assessment of sun bears Helarctos malayanus in Southeast Asia. We found that the most significant barrier to using bycatch data for secondary research was the time required, by the owners of the data and by the secondary researchers (us), to retrieve, interpret and process data into a form suitable for secondary analyses. Furthermore, large quantities of data were lost due to incompleteness and ambiguities in data entry. From our experiences, and from a review of the published literature and online resources, we generated nine recommendations on data management best practices for field site metadata, camera trap deployment metadata, image classification data and derived data products. We cover simple techniques that can be employed without training, special software and Internet access, as well as options for more advanced users, including a review of data management software and platforms. From the range of solutions provided here, researchers can employ those that best suit their needs and capacity. Doing so will enhance the usefulness of their camera trap bycatch data by improving the ease of data sharing, enabling collaborations and expanding the scope of research

The grinch who stole wisdom

Dr. Seuss is wise. How the Grinch Stole Christmas (Seuss, 1957) could serve as a parable for our time. It can also be seen as a roadmap for the development of contemplative wisdom. The abiding popularity of How the Grinch Stole Christmas additionally suggests that contemplative wisdom is more readily available to ordinary people, even children, than is normally thought. This matters because from the point of view of contemplatives in any of the world's philosophies or religions, people are confused about wisdom. The content of the nascent field of wisdom studies, they might say, is largely not wisdom at all but rather what it's like to live in a particular kind of prison cell, a well appointed cell perhaps, but not a place that makes possible either personal satisfaction or deep problem solving. I believe that what the contemplative traditions have to say is important; they offer a different orientation to what personal wisdom is, how to develop it, and how to use it in the world than is presently contained in either our popular culture or our sciences. In order to illustrate this I will examine, in some detail, one contemplative path within Buddhism. Buddhism is particularly useful in this respect because its practices are nontheistic and thus avoid many of the cultural landmines associated with the contemplative aspects of Western religions