Radar, Insect Population Ecology, and Pest Management

Discussions included: (1) the potential role of radar in insect ecology studies and pest management; (2) the potential role of radar in correlating atmospheric phenomena with insect movement; (3) the present and future radar systems; (4) program objectives required to adapt radar to insect ecology studies and pest management; and (5) the specific action items to achieve the objectives

Nature, Origin, and Age Relationships of Landscape Complexes in Southwestern Saskatchewan

Six landscape complexes are recognized in the Cypress Lake (72 F) and Wood Mountain (72 G) areas of southwestern Saskatchewan. The complexes are recognized by their geomorphology, geology, and processes of landscape formation. The relationships of these components are used to determine the relative ages of the complexes. The oldest complex designated “unglaciated bedrock terrain”, consists of mature landscapes developed in Late Cretaceous and Tertiary sediments. It was formed by fluvial and mass wasting processes under Late Tertiary arid to semi-arid climates. A rather similar complex, but with scattered drift residuals - chiefly glacial erratics, is called “bedrock terrain with residual drift”. This complex reflects similar Late Tertiary processes of landscape formation but was later affected by Pleistocene glaciation. A complex called “bedrock terrain and drift” resembles the older complexes except for a veneer of drift and local meltwater channels. Here, effects of the Late Wisconsinan glaciation are restricted to meltwater erosion, and the drift appears to predate this glaciation. The other three landscape complexes are: “first advance drift”, “interlobate drift” and “last advance drift”. These include terrain typical of the parts of the southern prairies covered by the Late Wisconsinan glacier.On observe six ensembles de paysages dans les régions de Cypress Lake (72F) et Wood Mountain (72G). Les ensembles se distinguent par leur géomorphologie, leur géologie et leurs processus de formation. Les liens entre ces composantes ont servi à déterminer l'âge relatif des paysages. L'ensemble le plus ancien se caractérise par son substratum non englacé et est composé de paysages au stade de la maturité édifiés dans les sédiments du Crétacé supérieur et du Tertiaire. Il a été formé sous les climats arides à semi arides du Tertiaire supérieur par des processus fluviatiles et de solifluxion. Le deuxième ensemble est très semblable, mais comprend, lui, des dépôts glaciaires résiduels dispersés, surtout de nature erratique. Cet ensemble rappelle les mêmes processus de formation, mais il a été englacé au Pléistocène. Le troisième ensemble caractérisé par ses dépôts glaciaires ressemble aux ensembles plus anciens, sauf en ce qui a trait au placage de matériel détritique et à la présence de chenaux de fonte. Ici, les effets de la glaciation du Wisconsinien supérieur se limitent à une érosion par l'eau de fonte, car les dépôts glaciaires semblent antérieurs à cette glaciation. Les trois autres ensembles de paysages se caractérisent, respectivement, par des dépôts glaciaires de première avancée, par des dépôts glaciaires interlobaires et, enfin, par des dépôts glaciaires de dernière avancée. Ces paysages renferment des terrains caractéristiques des milieux de la Prairie englacés au Wisconsinien supérieur.Sechs Landschaftseinheiten wurden in den Gebieten von Cypress Lake (72 F) und Wood Mountain (72 G) in Sùdwest-Saskatchewan identifiziert. Die Einheiten unterscheiden sich durch ihre Géomorphologie, Géologie und Prozesse der Landschaftsbildung. Die Beziehungen zwischen diesen Komponenten werden benutzt, urn das relative Alter der Einheiten zu bestimmen. Die atteste Einheit, welche sich durch ihr nicht vereistes anstehendes Gestein auszeichnet, besteht aus Landschaften im Stadium der Reife, die sich in Sedimenten der spàten Kreidezeit und des Tertiàr entwickelt haben. Sie wurde durch fluviale und Masse zerstôrende Vorgànge unter den trockenen bis halbtrockenen Klimas des spàten Tertiàr gebildet. Eine ziemlich àhnliche Einheit, jedoch mit zerstreuten glazialen Ablagerungsruckstanden vor allem erratischer Natur, wird "Gebiet mit anstehendem Gestein und glazialen Ablagerungsruckstanden" genannt. Diese Einheit spiegelt àhnliche Prozesse der Landschaftsbildung im spàten Tertiàr, wurde aber spàter durch die Vereisung im Pleistozàn beeinfluRt. Ein Gebiet mit anstehendem Gestein und AbIa-gerungen gleicht den àlteren Einheiten, abgesehen von einem Schleier von Trummerablagerungen und ortlichen Schmelzwasserkanàlen. Hier scheinen die Auswirkungen der spàt-Wisconsinischen Vereisung sich auf Erosion durch Schmelzwasser zu beschrànken, und die glazialen Ablagerungen scheinen vor dieser Vereisung geschehen zu sein. Die drei anderen Landschaftseinheiten sind: "glaziale Ablagerungen des ersten Vors-tofies", "interlobale glaziale Ablagerungen" und "glaziale Ablagerungen des letzten VorstoBes". Diese Landschaftseinheiten schlieBen Formationen ein, die typisch fur die im spàten Wisconsinum vereisten Teile der Pràrien sind

Closed surfaces with different shapes that are indistinguishable by the SRNF

summary:The Square Root Normal Field (SRNF), introduced by Jermyn et al. in [5], provides a way of representing immersed surfaces in $\mathbb{R}^3$, and equipping the set of these immersions with a “distance function" (to be precise, a pseudometric) that is easy to compute. Importantly, this distance function is invariant under reparametrizations (i.e., under self-diffeomorphisms of the domain surface) and under rigid motions of $\mathbb{R}^3$. Thus, it induces a distance function on the shape space of immersions, i.e., the space of immersions modulo reparametrizations and rigid motions of $\mathbb{R}^3$. In this paper, we give examples of the degeneracy of this distance function, i.e., examples of immersed surfaces (some closed and some open) that have the same SRNF, but are not the same up to reparametrization and rigid motions. We also prove that the SRNF does distinguish the shape of a standard sphere from the shape of any other immersed surface, and does distinguish between the shapes of any two embedded strictly convex surfaces

An Intersubjective Analysis of Engineering Leadership Across Organizational Locations: Implications for Higher Education

Engineering leadership education has become increasingly popular over the past decade in response to national calls for educational change. Despite the growing popularity of the movement, however, reform efforts continue to be piecemeal in their delivery, driven largely by the priorities of program leaders who established them (Graham, 2012). If we as engineering educators wish to more systematically develop leadership skills in our students, we should begin by empirically examining and defining our phenomenon of interest: engineering leadership. Our article takes up this challenge by investigating how 82 engineers in five organizationally distinct roles define leadership and how their respective insights are shaped by their diverse organizational locations. After weaving together the perspectives of engineers in industry, human resource professionals, entrepreneurs, politicians and interns, we propose a poly-vocal definition of engineering leadership and identify practical implications for engineering leadership educators.   En réponse aux appels à réformer le système de l’éducation, la formation de leaders en génie a gagné en popularité au cours des dix dernières années. Malgré la popularité croissante de ce mouvement, les réformes demeurent partiales et suivent largement les priorités des directeurs de programmes qui les mettent en place (Graham, 2012). Si, en tant que formateurs d’ingénieurs, nous souhaitons perfectionner systématiquement les compétences en leadership de nos étudiants, il nous faut commencer par une analyse empirique qui permette de définir précisément notre objet, soit le leadership en génie. Notre article relève le défi en analysant les façons dont 82 ingénieurs occupant cinq rôles distincts dans une organisation définissent le leadership, et les façons dont leurs positions institutionnelles établissent leurs perspectives. En tenant compte des perspectives d’ingénieurs de l’industrie, de professionnels des ressources humaines, d’entrepreneurs, de politiciens et de stagiaires, nous proposons une définition plurivoque du leadership en génie, et nous en identifions les implications pratiques pour les éducateurs du domaine

Proofs of Two Conjectures Related to the Thermodynamic Bethe Ansatz

We prove that the solution to a pair of nonlinear integral equations arising in the thermodynamic Bethe Ansatz can be expressed in terms of the resolvent kernel of the linear integral operator with kernel exp(-u(theta)-u(theta'))/cosh[(1/2)(theta-theta')]Comment: 16 pages, LaTeX file, no figures. Revision has minor change

Local Health Departments’ Level of Engagement in Population Mental Health Promotion

Background: Mental health conditions are highly prevalent in the U.S. and are associated with physical health problems. Federal initiatives recognize mental health as a public health priority, and local health departments (LHDs) have been identified as partners to promote population mental health. Little is known, however, about the extent to which LHDs address mental health or how LHD officials perceive mental health as a public health concern. Purpose: To describe the cumulative level of LHDs’ engagement in activities to address population mental health and explore how LHD officials perceive their roles in promoting it. Methods: Module 2 of the 2013 National Profile of Local Health Departments Study (N=505) was used to develop a cumulative measure of LHD engagement in mental health activities. Univariate and bivariate analyses were performed to describe LHDs’ level of mental health activity and identify associated LHD characteristics. Semi-structured in-depth interviews were conducted with 30 LHD officials, audio-recorded, transcribed, and analyzed using thematic content analysis. Results: Over half (55.8%) of LHDs performed ≥1 mental health activities, and 21.2% performed ≥4. LHDs that provided primary care services were most engaged in mental health activities, with 30.4% performing ≥4 and 18.2% performing ≥6. LHD officials perceived mental health as a public health issue and felt community pressure to address it, but encountered barriers related to resources and organizational boundaries. Implications: LHDs might benefit from quality improvement and information sharing resources focused on population mental health promotion. Research should examine LHDs relationships with behavioral health departments and roles within broader social service systems

The (LATTICE) QCD Potential and Running Coupling: How to Accurately Interpolate between Multi-Loop QCD and the String Picture

We present a simple parameterization of a running coupling constant, defined via the static potential, that interpolates between 2-loop QCD in the UV and the string prediction in the IR. Besides the usual \Lam-parameter and the string tension, the coupling depends on one dimensionless parameter, determining how fast the crossover from UV to IR behavior occurs (in principle we know how to take into account any number of loops by adding more parameters). Using a new Ansatz for the LATTICE potential in terms of the continuum coupling, we can fit quenched and unquenched Monte Carlo results for the potential down to ONE lattice spacing, and at the same time extract the running coupling to high precision. We compare our Ansatz with 1-loop results for the lattice potential, and use the coupling from our fits to quantitatively check the accuracy of 2-loop evolution, compare with the Lepage-Mackenzie estimate of the coupling extracted from the plaquette, and determine Sommer's scale $r_0$ much more accurately than previously possible. For pure SU(3) we find that the coupling scales on the percent level for $\beta\geq 6$.Comment: 47 pages, incl. 4 figures in LaTeX [Added remarks on correlated vs. uncorrelated fits in sect. 4; corrected misprints; updated references.

Finite size corrections in massive Thirring model

We calculate for the first time the finite size corrections in the massive Thirring model. This is done by numerically solving the equations of periodic boundary conditions of the Bethe ansatz solution. It is found that the corresponding central charge extracted from the $1/L$ term is around 0.4 for the coupling constant of ${g_0}=-{\pi\over 4}$ and decreases down to zero when ${g_0}=-{\pi\over{3}}$. This is quite different from the predicted central charge of the sine-Gordon model.Comment: 8 pages, Latex, 2 figure