Population Biology And Energetics Of Three Species Of Small Mammals In The Taiga Of Interior Alaska

Thesis (Ph.D.) University of Alaska Fairbanks, 197

Project Teaching of Manual Training

Recent numbers of this magazine and other good publications have emphasized the necessity that manual training teachers have a well recognized theory back of their work, and further, that the value of the work of any teacher is in direct ratio to the clearness with which this theory is comprehended and followed in practice. A project is any activity purposed by an individual and by him carried through. Project teaching of manual training is the most difficult kind of teaching, but withall the most fruitful, for it furnishes the opportunity to develop those qualities of manhood that our democratic society most needs today; and it enables one to make most effective use of the laws that govern the development of all human beings

Ruin Imagery and the Iconography of Regeneration in Eighteenth Century French Art

While the extraordinary popularity of ruin imagery in eighteenth century France is well known to art historians, it has remained a largely unstudied, and thus misunderstood, cultural phenomenon. The profusion of ruin pictures and ruinous garden pavilions during the Enlightenment is generally interpreted as symptomatic of the emotional febrility and escapist perversity of a society bogged down in decadence. The popularity of ruins as motifs of interior decoration is taken as proof of the reign of rococo frivolity. The present study seeks to bring into focus how eighteenth century artists, connoisseurs and writers themselves felt about their ruin imagery. This examination is called for because the evidence of documents, literary sources and the art itself overwhelmingly suggests that ruins were considered to be symbolic of nature's regenerative vitality and wholesomeness. To the contemporary viewer, therefore, the experience of a ruin was an antidote to, not a symptom of, social and personal lethargy. Early signs of the new iconographical trends appear in the art of students at the French Academy in Rome and were probably influenced by the commitments to ecclesiastical and cultural reform expressed by Italian ruinists associated with the academy. Ruins had a longstanding association in visual imagery and literature with the contemplative life, intellectual insights and poetic inspiration; in the eighteenth century, to frequent ruin settings implied a rejection of hypocrisy, pomposity and spiritual complacency. In France, catastrophes, urban renewal projects and the Revolution created "fresh" ruins which, even more poignantly than ancient ruins, illustrated the transience of life. Images of these modern ruins clearly embodied the unstable blend of anxiety, excitement, hope and resignation with which French society watched the shirlwind of change sweeping their country toward the year 1800

Six-degree of freedom device for natural model creation

Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2007.Includes bibliographical references (p. 75-78).This thesis presents a novel input device, called SP3X, for the creation of digital models in a semi-immersive environment. The goal of SP3X is to enable novice users to construct geometrically complex three-dimensional objects without extensive training or difficulty. SP3X extends the ideas of mixed reality and partial physical instantiation while building on the foundation of tangible interfaces. The design of the device reflects attention to human physiologic capabilities in manual precision, binocular vision, and reach. The design also considers cost and manufacturability. This thesis presents prior and contributing research from industry, biology, and interfaces in academia. A study investigates the usability of the device and finds that it is functional and easily learned, and identifies several areas for improvement. Finally, a Future Work section is provided to guide researchers pursuing this or similar interfaces. The SP3X project is a result of extensive collaboration with Mahoro Anabuki, a visiting scientist from Canon Development Americas, and could not have been completed without his software or his insight.Richard Henry Whitney, III.S.M

L. Whitney Elkins Correspondence

Entries include a handwritten letter on ruled paper with biographical information and typed transcripts of book inscriptions

Post-Pandemic, Translational Research, and Indigenous Communities

It is well documented that American Indian/Alaska Native/Native Hawaiian/First Nations, known as Indigenous Peoples, have among the most significant health disparities in the world. Clinical services for these populations are typically underfunded, and Indigenous Peoples often have preexisting and co-occurring health conditions. These factors combined with a multitude of social inequities make Indigenous communities extremely susceptible to infectious diseases, including COVID- 19. This paper discusses perspectives on the post-pandemic frameworks and policies toward translational science as an approach to advance health promotion for community-based interventions, dissemination, and sustainability. The importance of exercising Indigenous self-determination, public health authority, and population health sovereignty is emphasized

OB Stars & Stellar Bowshocks in Cygnus-X: A Novel Laboratory Estimating Stellar Mass Loss Rates

We use mid-IR images from the Spitzer Cygnus~X Legacy Survey to search for stellar bowshocks, a signature of early type "runaway" stars with high space velocities. We identify ten arc-shaped nebulae containing centrally located stars as candidate bowshocks. New spectroscopic observations of five stars show that all are late O to early B dwarfs. Our morphologically selected sample of bowshock candidates encompasses diverse physical phenomena. Three of the stars appear to be pre-main-sequence objects on the basis of rising SEDs in the mid-IR, and their nebulae may be photon-dominated regions (PDRs). Four objects have ambiguous classification. These may be partial dust shells or bubbles. We conclude that three of the objects are probable bowshocks, based on their morphological similarity to analytic prescriptions. Their nebular morphologies reveal no systematic pattern of orientations that might indicate either a population of stars ejected from or large-scale hydrodynamic outflows from Cyg OB2. The fraction of runaways among OB stars near Cyg OB2 identified either by radial velocity or bowshock techniques is ~0.5%, much smaller than the 8% estimated among field OB stars. We also obtained a heliocentric radial velocity for the previously known bowshock star, BD+43\degr3654, of -66.2+/-9.4 km/s, solidifying its runaway status and implying a space velocity of 77+/-10 km/s. We use the principles of momentum-driven bowshocks to arrive at a novel method for estimating stellar mass loss rates. Derived mass loss rates range between 10^-7 and few x10^-6 solar masses/yr for the three O5V -- ~B2V stars identified as generating bowshocks. These values are at the upper range of, but broadly consistent with, estimates from other methods. (Abridged)Comment: 49 pages, 19 figures; Accepted for publication in ApJ; full-resolution color figure version available at http://physics.uwyo.edu/~chip/Papers/CygXBowshocks; comments invite

Bumblebees can detect floral humidity

Floral humidity, a region of elevated humidity in the headspace of the flower, occurs in many plant species and may add to their multimodal floral displays. So far, the ability to detect and respond to floral humidity cues has been only established for hawkmoths when they locate and extract nectar while hovering in front of some moth-pollinated flowers. To test whether floral humidity can be used by other more widespread generalist pollinators, we designed artificial flowers that presented biologically relevant levels of humidity similar to those shown by flowering plants. Bumblebees showed a spontaneous preference for flowers that produced higher floral humidity. Furthermore, learning experiments showed that bumblebees are able to use differences in floral humidity to distinguish between rewarding and non-rewarding flowers. Our results indicate that bumblebees are sensitive to different levels of floral humidity. In this way floral humidity can add to the information provided by flowers and could impact pollinator behaviour more significantly than previously thought