Hydra 1 data display system

System, named Hydra, generates charts, graphs, and printed matter on slides or conventional negatives and positives, and combines these media with a capability of storage on magnetic tape for future updating to accommodate engineering changes or contract modifications to be readily added to basic data

TB124: Chemical Control of Balsam Twig Aphid, Midarus abietinus Koch (Homoptera: Aphididae)

This study was initiated to provide Christmas tree growers with a selection of insecticides capable of effective control of balsam twig aphid (Mindarus abietinus Koch) on balsam fir. Low rates of active ingredients were tested to assure minimal environmental impact and reduced chemical costshttps://digitalcommons.library.umaine.edu/aes_techbulletin/1060/thumbnail.jp

Reimagining quality in early childhood [Editorial]

This special issue brings together a collection of rich, complex and challenging contributions that attempt to offer generative approaches to reconfigure what might constitute ‘quality’ within early years education. The issue came about from a shared concern about what Moss (this issue) refers to as the ‘gravitational pull’ of quality in early childhood education; debates about quality have existed for a considerable time and, despite rigorous critique, remain resolute. This issue aims to revisit and extend the groundbreaking work undertaken by Gunilla Dahlberg, Peter Moss and Alan Pence (1999, 2007) in Beyond Quality in Early Childhood Education and Care: Postmodern Perspectives and in the subsequent revised edition. In both texts, the authors made the astute observation that the concept and language of quality cannot accommodate issues such as diversity and multiple perspectives, contextual specificity and subjectivity. They argue that we must ‘go beyond the concept of quality’ (Dahlberg et al., 2007: 6) and, in so doing, suggest working with a new concept: ‘meaning making’

TB129: Chemical Control of Balsam Gall Midge Paradiplosis tumifex Gagne (Diptera: Cecidomyiidae)

This study was undertaken to test new insecticides for control of the balsam gall midge and to determine effectiveness of later insecticide application in order to expand the effective period for control.https://digitalcommons.library.umaine.edu/aes_techbulletin/1065/thumbnail.jp

Eu(rope): (re)assembling, (re)casting and (re)aligning lines of de- and re-territorialisation of early childhood

The aim of this paper is to (re)(e)value(ate) current micro-and macropolicies and politics that shape – and are shaped by – conceptualisations of and, in consequence, practices towards young children in a range of institutions/figurations. The 'geopolitical' location for our investigation is Europe, understood as conceptual space(s) as well as (geographical) territory. Whilst we begin by focusing attention on events within an English context, we nevertheless move beyond geographical boundaries. We argue that movements that are currently being undertaken in England are not individual activities. Rather, England is infected and affected by European and global histories, practices, policies, philosophies and epistemologies. We argue that it is the oscillations between different components within a broad European assemblage (human and nonhuman) that makes something happen. Subsequently, we detail and question whether 'happenings' that are occurring in England can be considered as possible creative openings where early childhood education/care could be reassembled 'differently'. Once one steps outside what's been thought before . . . once one ventures outside what's familiar and reassuring, once one has to invent new concepts for unknown lands, then methods and moral systems break down and thinking becomes, as Foucault puts it, a ''perilous act'', a violence, whose first victim is oneself

TB151: The Balsam Gall Midge--An Economic Pest of Balsam Fir Christmas Trees

This technical bulletin summarizes all previous published research on the balsam gall midge. Also included are new data on the effect of late bud burst on midge oviposition and the degree of population regulation of the gallmaker by its inquiline.https://digitalcommons.library.umaine.edu/aes_techbulletin/1051/thumbnail.jp

Achieving sub-diffraction imaging through bound surface states in negative-refracting photonic crystals at the near-infrared

We report the observation of imaging beyond the diffraction limit due to bound surface states in negative refraction photonic crystals. We achieve an effective negative index figure-of-merit [-Re(n)/Im(n)] of at least 380, ~125x improvement over recent efforts in the near-infrared, with a 0.4 THz bandwidth. Supported by numerical and theoretical analyses, the observed near-field resolution is 0.47 lambda, clearly smaller than the diffraction limit of 0.61 lambda. Importantly, we show this sub-diffraction imaging is due to the resonant excitation of surface slab modes, allowing refocusing of non-propagating evanescent waves

Low-voltage nanodomain writing in He-implanted lithium niobate crystals

A scanning force microscope tip is used to write ferroelectric domains in He-implanted single-crystal lithium niobate and subsequently probe them by piezoresponse force microscopy. Investigation of cross-sections of the samples showed that the buried implanted layer, $\sim 1$\,\textmu m below the surface, is non-ferroelectric and can thus act as a barrier to domain growth. This barrier enabled stable surface domains of $< 1$\,\textmu m size to be written in 500\,\textmu m-thick crystal substrates with voltage pulses of only 10\,V applied to the tip

Asymptotics of relative heat traces and determinants on open surfaces of finite area

The goal of this paper is to prove that on surfaces with asymptotically cusp ends the relative determinant of pairs of Laplace operators is well defined. We consider a surface with cusps (M,g) and a metric h on the surface that is a conformal transformation of the initial metric g. We prove the existence of the relative determinant of the pair $(\Delta_{h},\Delta_{g})$ under suitable conditions on the conformal factor. The core of the paper is the proof of the existence of an asymptotic expansion of the relative heat trace for small times. We find the decay of the conformal factor at infinity for which this asymptotic expansion exists and the relative determinant is defined. Following the paper by B. Osgood, R. Phillips and P. Sarnak about extremal of determinants on compact surfaces, we prove Polyakov's formula for the relative determinant and discuss the extremal problem inside a conformal class. We discuss necessary conditions for the existence of a maximizer.Comment: This is the final version of the article before it gets published. 51 page