The concave stone implements of the Tasmanian aborigines

The following paper seeks to deal with these implements as they are found in Tasmania, and to institute a comparison with those found in S.E. Victoria. This is the last part of Australia to be united to Tasmania, and here, if anywhere, resemblances should be found. When we take into consideration the daily life of the aboriginal, a considerable part must have been spent in the making, smoothing, sharpening, and maintaining of his wooden weapons. These were two in number - the spear and the throwing stick. All the secondary or finishing work on them was done with the concave stone implements. Article includes illustrations

Null geodesics in conformal gravity

Abstract We present an analysis of the null geodesics of the static, spherically symmetric, vacuum solution to the equations of conformal (Weyl) gravity. We classify the full range of exotic spacetimes arising from the parameter space of the metric. The nature of various notable features of these spacetimes is investigated including light spheres, horizons and physical singularities.</jats:p

The Ursinus Weekly, March 5, 1934

Excellent program for Founders\u27 Day • Jack Hart talks to Ursinus groups • Courtmen win one; lose two • Dean Kline guest of honor at Phila. dinner • Seniors plan dance and play Mar. 16-17 • Federal aid granted to needy college students • Men\u27s negative team debates on away trip • Prof. F. I. Sheeder speaks to York alumni members • Shaw-Bernard collection on display in college library • Matmen close season with 17-11 victory over Rutgers • Women debaters win and lose in dual contest with Western Maryland • Girls lose to Drexel and tie Beaver 20-20 • Frosh beat Drexel • Freshman debating team loses to North Coventry • The shine of dreams to be presented in Norristown • Girls second team wins over Drexel and Beaver • Shriner and Fircroft victors in dorm games • Future programs of campus organizations • College library acquires numerous new books • Belgium subject of discussion at IRC • Dr. and Mrs. Lentz hosts at dinner for captains • Dr. Philip Goepp addresses group of women students • Week of prayer speaker is guest of brotherhood • Miss Takacs presides at meeting of French Club • Quaker vesper service led by Shollenbergerhttps://digitalcommons.ursinus.edu/weekly/2015/thumbnail.jp

The Ursinus Weekly, November 6, 1933

Curtis institute artists to render evening concert • May Day pageant must be submitted by January 8 • Bears felled by G-burg Bullets, 12-13; frosh score 9-0 win at Farm School • College Glee Club sings at McAllister\u27s in Phila. • Faculty and students are entertained at YW tea • Fred Cardin, Indian lecturer, secured by Jr. advisory com. • Ditter Haynes to play for senior dance Nov. 11 • Ursinus harriers place second in conference meet • Soccermen tie Haverford but bow to the Bullets, 7-0 • Mrs. John Lentz plans to entertain freshman girls • Lecture by Dr. J. Mauchly to Hall Chemical Society • Y.M. to be guests of Y.W. at armistice day program • Father\u27s Day banquet after Muhlenberg game • Women\u27s dorm committee to sponsor tea and bazaar • Ye famed tugge-of-warre sees sophs victors; Parson Mitchell drenched in watery battle • English Club plans discussion of modern theatre tonight • Mathematics group enjoys games and speeches at meeting • Big-little sisters unite in celebrating Halloween • Y.M.C.A. chorus makes tentative plans for year • Hist.-social science group elects Wm. O\u27Donnell pres. • Pep rally talks by pop Hendricks and Brownback • Mr. Pettit speaks to Y on topic of religion • Glenside Quarterly Club to witness football game • Curtain Club may present production in December • Thank you doctor to be presented November 18 • Church conference held at Ursinus November 4 • Political impersonations at women\u27s debating club • Brotherhood discusses prayer at meeting • Roxborough M. E. Church to hear Ursinus Glee Club • New press box will welcome visiting scribes hereafter • Wm. Tempest leads vespers in appreciation program • Representatives attend YW cabinet conferencehttps://digitalcommons.ursinus.edu/weekly/2004/thumbnail.jp

A Review of Electronic Devices to Assess Inhaler Technique

Multiple electronic devices exist that provide feedback on the accuracy of patient inhaler technique. Our purpose is to describe the inhaler technique feedback provided by these devices, including specific technique steps measured, how feedback is displayed, target of feedback (patient, provider, researcher), and compatibility with inhaler type (metered-dose inhaler [MDI], diskus, etc.)

Are There Any Type 2 QSOs? The Case of AXJ0341.4-4453

The X-ray source AXJ0341.4-4453 was described by Boyle et al. as a Type 2 AGN at z = 0.672 based on the absence of broad emission lines in the observed wavelength range 4000-7000 Angstroms. We obtained a new spectrum of AXJ0341.4-4453 extending to 9600 Angstroms which reveals broad Balmer lines and other characteristics of Seyfert 1 galaxies. The FWHM of broad H-beta is at least 1600 km/s, while [O III]5007 has FWHM = 730 km/s. The flux ratio [O III]5007/H-beta = 1. Thus, AXJ0341.4-4453 is by definition a narrow-line Seyfert 1 galaxy, or perhaps a moderately reddened Seyfert 1 galaxy, but it is not a Type 2 QSO. Although examples of the latter have long been sought, particularly in connection with the problem of the X-ray background, there is still virtually no evidence for the existence of any Type 2 QSO among X-ray selected samples.Comment: 4 pages, 3 figures, to appear in MNRA

NASA Near Earth Network (NEN), Deep Space Network (DSN) and Space Network (SN) Support of CubeSat Communications

There has been a historical trend to increase capability and drive down the Size, Weight and Power (SWAP) of satellites and that trend continues today. Small satellites, including systems conforming to the CubeSat specification, because of their low launch and development costs, are enabling new concepts and capabilities for science investigations across multiple fields of interest to NASA. NASA scientists and engineers across many of NASAs Mission Directorates and Centers are developing exciting CubeSat concepts and welcome potential partnerships for CubeSat endeavors. From a communications and tracking point of view, small satellites including CubeSats are a challenge to coordinate because of existing small spacecraft constraints, such as limited SWAP and attitude control, low power, and the potential for high numbers of operational spacecraft. The NASA Space Communications and Navigation (SCaN) Programs Near Earth Network (NEN), Deep Space Network (DSN) and the Space Network (SN) are customer driven organizations that provide comprehensive communications services for space assets including data transport between a missions orbiting satellite and its Mission Operations Center (MOC). The NASA NEN consists of multiple ground antennas. The SN consists of a constellation of geosynchronous (Earth orbiting) relay satellites, named the Tracking and Data Relay Satellite System (TDRSS). The DSN currently makes available 13 antennas at its three tracking stations located around the world for interplanetary communication. The presentation will analyze how well these space communication networks are positioned to support the emerging small satellite and CubeSat market. Recognizing the potential support, the presentation will review the basic capabilities of the NEN, DSN and SN in the context of small satellites and will present information about NEN, DSN and SN-compatible flight radios and antenna development activities at the Goddard Space Flight Center (GSFC) and across industry. The presentation will review concepts on how the SN multiple access capability could help locate CubeSats and provide a low-latency early warning system. The presentation will also present how the DSN is evolving to maximize use of its assets for interplanetary CubeSats. The critical spectrum-related topics of available and appropriate frequency bands, licensing, and coordination will be reviewed. Other key considerations, such as standardization of radio frequency interfaces and flight and ground communications hardware systems, will be addressed as such standardization may reduce the amount of time and cost required to obtain frequency authorization and perform compatibility and end-to-end testing. Examples of standardization that exist today are the NASA NEN, DSN and SN systems which have published users guides and defined frequency bands for high data rate communication, as well as conformance to CCSDS standards. The workshop session will also seek input from the workshop participants to better understand the needs of small satellite systems and to identify key development activities and operational approaches necessary to enhance communication and navigation support using NASA's NEN, DSN and SN

Improving long term driving comfort by taking breaks - how break activity affects effectiveness

During long duration journeys, drivers are encouraged to take regular breaks. The benefits of breaks have been documented for safety; breaks may also be beneficial for comfort. The activity undertaken during a break may influence its effectiveness. Volunteers completed 3 journeys on a driving simulator. Each 130 min journey included a 10 min break after the first hour. During the break volunteers either stayed seated, left the simulator and sat in an adjacent room, or took a walk on a treadmill. The results show a reduction in driver discomfort during the break for all 3 conditions, but the effectiveness of the break was dependent on activity undertaken. Remaining seated in the vehicle provided some improvement in comfort, but more was experienced after leaving the simulator and sitting in an adjacent room. The most effective break occurred when the driver walked for 10 min on a treadmill. The benefits from taking a break continued until the end of the study (after a further hour of driving), such that comfort remained the best after taking a walk and worst for those who remained seated. It is concluded that taking a break and taking a walk is an effective method for relieving driving discomfort

Endometriosis and the Coronavirus (COVID-19) Pandemic: Clinical Advice and Future Considerations

The COVID-19 pandemic has led to a dramatic shift in the clinical practice of women’s health and routine care for endometriosis has been severely disrupted. Endometriosis is defined as an inflammatory disease characterized by lesions of endometrial-like tissue outside the uterus that is associated with pelvic pain and/or infertility (1). It affects ∼10% of reproductive age women worldwide, is diagnosed by surgical visualization or by radiological imaging, and is managed with hormone treatments or by laparoscopic removal of lesions (2–4). At the time of writing, under the guidance of international gynecological organizations (5–7), many centers temporarily ceased offering outpatient appointments, diagnostic imaging for nonacute pelvic pain, surgery for endometriosis, and fertility treatments. In the absence of routine care pathways and uncertainty about when health services will be available again, endometriosis sufferers are likely to feel vulnerable and that resultant stress and anxiety may contribute to a worsening of symptoms. The pandemic poses several important questions for healthcare providers on how best to deliver care within these restrictions. Herein, we present clinical advice on the management of endometriosis during the COVID-19 pandemic and future considerations