Temperature Effects on Development in \u3ci\u3eAphelinus Albipodus\u3c/i\u3e (Hymenoptera: Aphelinidae) From Two Geographic Regions

Aphelinus albipodus Hayat & Fatima was imported to the United States for classical biological control of the Russian wheat aphid, Diuraphis noxia (Mordvilko). Temperature effects on development of A. albipodus from two geographic regions (hereafter referred to as strains) were measured using the Russian wheat aphid as host. Temperature thresholds for egg to mummy, mummy to adult, and egg to adult development were 8.9,10.9, and 9.7°C for A. albipodus collected near Pingluo, China, and were and 8.5, 10.3, and 9.6°C for A. albipodus collected near Urumqi, China. The time required to develop from egg to adult did not differ among strains. However, when total immature development was partitioned into egg to mummy and mummy to adult, the time required for development through these two periods differed among strains. The Urumqi strain developed faster than the Pingluo strain from egg to mummy, while the Pingluo strain developed faster from mummy to adult. Degree-day requirements for egg to mummy development were 135 and 104 for the Pingluo and Urumqi strains, respectively. Corresponding requirements for mummy to adult development were 70 and 101 degree-days. The ability to vary immature development rate in response to climate or other factors could have adaptive significance because it would permit the parasitoid to exploit environments over a broad geographic range

Implementing corpus analysis and GIS to examine historical accounts of the English Lake District

This paper reports on interdisciplinary research into the automated geographical analysis of historical text corpora. It provides an introduction to this research, which is being completed by two interrelated projects: the European Research Council-funded Spatial Humanities project and the Leverhulme Trust-funded Geospatial Innovation in the Digital Humanities project. In addition to contextualising the work of these projects, the paper introduces a case study that applies collocation analysis, automated geo-parsing, and Geographic Information Systems (GIS). The focus of this study is a 1.5 million-word corpus of writing about the English Lake District. This corpus comprises 80 works written between the years 1622 and 1900. In investigating this corpus, we demonstrate how a hybrid geographical and corpus-based methodology can be used to study the application of specific aesthetic terminology in historical writing about the Lakeland region

Full-Scale Hydrodynamic Evaluation of a Modified Navy J4F-2 Amphibian with a 0.425-Scale XP5M-1 Hull Bottom. TED No. NACA DE325

An investigation was made to evaluate the hydrodynamic qualities of a 0.425-scale model of the Navy XP5M-1 hull, which was installed on a modified Navy J4F-2 amphibian. Longitudinal and directional stability during take-off and landing, low-speed maneuverability, spray characteristics, and take-off performance were investigated. The behavior of the airplane in moderately rough water was also observed. The opinions of three pilots have been correlated with the data

Representations of matroids

The concept of matroids was originally introduced by Whitney and Van der Waerden in the 1930's to generalise the notion of linear dependence in a vector space; certain axioms satisfied by this relation were observed to be satisfied by other types of ’ dependence’ relations, such as algebraic dependence and ’ cycle’ dependence in a graph. Consequently a matroid was defined to be a set with an abstract dependence relation satisfying these axioms. One of the most natural questions to ask is whether every such ’ matroid' is representable in the obvious sense in a vector space. The answer is of course no (otherwise matroid theory would be equivalent to linear algebra) although in the early years of the subject examples of non-representable matroids were not easily obtainable. In this thesis we continue the work of Inglcton (in [20]) and Vamos (in [35,36]) on the representation problem, buiding up to an algebraic treatment in the important last chapter

GIS and literary history:advancing digital humanities research through the spatial analysis of historical travel writing and topographical literature

Exploratory studies have demonstrated the benefits of implementing Geographic Information Systems (GIS) technology in literary and cultural-historical research. These studies have done much to affirm the power and flexibility of GIS technology as a resource for humanities scholarship. At the same time, however, these studies share a common limitation in that they tend to rely on the analysis of point-based cartographic representations. Such representations are suitable for modelling quantitative geographical phenomena, but they are inadequate for modelling qualitative human phenomena. This inadequacy constitutes a significant problem for researchers who aspire to analyse the geographical experiences and spatial relationships represented in works of literature, including works that contain accounts of travel. The present article proposes a solution to this problem by demonstrating how advanced spatial analyses within GIS such as Cost-Surface Analysis (CSA) and Least-Cost-Path Analysis (LCP) can be used to facilitate more nuanced interpretations of historical works of travel writing and topographical literature. Specifically, the article explains how GIS, CSA and LCP can be combined to build coherent spatial models of the journeys recorded in the works of three canonical eighteenth-century British travellers, each of whom composed influential accounts of their travels through the English Lake District: the poet Thomas Gray (1716–1771), the naturalist Thomas Pennant (1726–1798) and the agriculturist Arthur Young (1741–1820)

Clinical expression of plakophilin-2 mutations in familial arrhythmogenic right ventricular cardiomyopathy

Background - Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited cardiac disorder characterized by loss of cardiomyocytes and their replacement by adipose and fibrous tissue. It is considered a disease of cell adhesion because mutations in desmosomal genes, desmoplakin and plakoglobin, have been implicated in the pathogenesis of ARVC. In a recent report, mutations in plakophilin-2, a gene highly expressed in cardiac desmosomes, have been shown to cause ARVC.Methods and Results - We investigated 100 white patients with ARVC for mutations in plakophilin-2. Nine different mutations were identified by direct sequencing in 11 cases. Five of these mutations are novel (A733fsX740, L586fsX658, V570fsX576, R413X, and P533fsX561) and predicted to cause a premature truncation of the plakophilin-2 protein. Family studies showed incomplete disease expression in mutation carriers and identified a number of individuals who would be misdiagnosed with the existing International Task Force and modified diagnostic criteria for ARVC.Conclusions - In this study, we provide new evidence that mutations in the desmosomal plakophilin-2 gene can cause ARVC. A systematic clinical evaluation of mutation carriers within families demonstrated variable phenotypic expression, even among individuals with the same mutation, and highlighted the need for a more accurate set of diagnostic criteria for ARVC

Alts, Abbreviations, and AKAs:historical onomastic variation and automated named entity recognition

The accurate automated identification of named places is a major concern for scholars in the digital humanities, and especially for those engaged in research that depends upon the gazetteer-led recognition of specific aspects. The field of onomastics examines the linguistic roots and historical development of names, which have for the most part only standardised into single officially recognised forms since the late nineteenth century. Even slight spelling variations can introduce errors in geotagging techniques, and these differences in place-name spellings are thus vital considerations when seeking high rates of correct geospatial identification in historical texts. This article offers an overview of typical name-based variation that can cause issues in the accurate geotagging of any historical resource. The article argues that the careful study and documentation of these variations can assist in the development of more complete onymic records, which in turn may inform geotaggers through a cycle of variational recognition. It demonstrates how patterns in regional naming variation and development, across both specific and generic name elements, can be identified through the historical records of each known location. The article uses examples taken from a digitised corpus of writing about the English Lake District, a collection of 80 texts that date from between 1622 and 1900. Four of the more complex spelling-based problems encountered during the creation of a manual gazetteer for this corpus are examined. Specifically, the article demonstrates how and why such variation must be expected, particularly in the years preceding the standardisation of place-name spellings. It suggests how procedural developments may be undertaken to account for such georeferential issues in the Named Entity Recognition strategies employed by future projects. Similarly, the benefits of such multi-genre corpora to assist in completing onomastic records is also shown through examples of new name forms discovered for prominent sites in the Lake District. This focus is accompanied by a discussion of the influence of literary works on place-name standardisation – an aspect not typically accounted for in traditional onomastic study – to illustrate the extent to which authorial interests in regional toponymic histories can influence linguistic development

A Search for various Double Beta Decay Modes of Cd, Te and Zn Isotopes

Various double beta decay modes of Cd, Zn and Te isotopes are explored with the help of CdTe and CdZnTe semiconductor detectors. The data set is splitted in an energy range below 1 MeV having a statistics of 134.5 g$\cdot$d and one above 1 MeV resulting in 532 g$\cdot$d. No signals were observed in all channels under investigation. New improved limits for the neutrinoless double beta decay of Zn70 of $T_{1/2} > 1.3 \cdot 10^{16} yrs$ (90% CL), the longest standing limit of all double beta isotopes, and 0$\nu\beta^+$EC of Te120 of $T_{1/2} > 2.2 \cdot 10^{16} yrs$ (90% CL) are given. For the first time a limit on the half-life of the 2$\nu$ECEC of $^{120}$Te of $T_{1/2} > 9.4 \cdot 10^{15} yrs$ (90% CL) is obtained. In addition, limits on 2$\nu$ECEC for ground state transitions of Cd106, Cd108 and Zn64 are improved. The obtained results even under rough background conditions show the reliability of CdTe semiconductor detectors for rare nuclear decay searches.Comment: Extended introduction and summar