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Search Results: 1 - 10 of 207361 matches for " Andrew D Warren "
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Mysoria affinis (Herrich-Sch?ffer): morphological variation and synonymy (Lepidoptera, Hesperiidae, Pyrrhopyginae)
Warren, Andrew D.;Mielke, Olaf H. H.;
Revista Brasileira de Zoologia , 2004, DOI: 10.1590/S0101-81752004000200025
Abstract: mysoria wilsoni h.a. freeman, 1969, is established as a new junior synonym of mysoria affinis (herrich-sch?ffer, 1869). a lectotype for pyrrhopyga [sic] affinis herrich-sch?ffer, 1869 is designated.
The identity of Eudamus valeriana Pl?tz (Lepidoptera, Hesperiidae, Pyrginae)
Mielke, Olaf H. H.;Warren, Andrew D.;
Revista Brasileira de Zoologia , 2004, DOI: 10.1590/S0101-81752004000200024
Abstract: codatractus valeriana (pl?tz, 1881) comb. nov. is confirmed as a senior synonym of thorybes mysie dyar, 1904. a lectotype for eudamus valeriana pl?tz is designated.
Synonymic notes on North and Central American Lerodea Scudder and Corticea Evans (Lepidoptera, Hesperiidae, Hesperiinae)
Warren, Andrew D.;Mielke, Olaf H. H.;
Revista Brasileira de Zoologia , 2005, DOI: 10.1590/S0101-81752005000100030
Abstract: lerodea dysaules godman, 1900 is confirmed as a synonym of lerodea arabus (w. h. edwards, 1882). a lectotype for lerodea dysaules is designated. corticea similea (bell, 1942), comb. nov. is removed from lerodea scudder, 1872.
Towards a Technology Agnostic Approach to Developing Mobile Applications and Services  [PDF]
Ian Warren, Andrew Meads
Journal of Software Engineering and Applications (JSEA) , 2017, DOI: 10.4236/jsea.2017.106028
Abstract: Today’s mobile devices and networks enable the development of novel mobile service applications. Developing such applications raises many challenges including heterogeneity in terms of mobile operating systems and APIs, service availability and scalability, and providing for the diverse communication needs of different applications. In this paper, we present an overview of the Odin middleware platform whose aim is to address these challenges. Odin utilises a surrogate-based architectural model to promote a mobile service’s scalability and availability. The middleware is reconfigurable, allowing mobile applications to adapt to changing operating conditions and minimise resource consumption. It also includes an optimised communication channel that masks the complexity of interacting with mobile services over mobile telecommunications networks. Using Odin’s interfaces and standards compliance, mobile applications and services with consistent communication behaviour can be easily implemented on heterogeneous platforms. Through quantitative evaluation, Odin’s message-based communication primitives have been demonstrated to perform favourably with leading industry push messaging providers.
Timing major conflict between mitochondrial and nuclear genes in species relationships of Polygonia butterflies (Nymphalidae: Nymphalini)
Niklas Wahlberg, Elisabet Weingartner, Andrew D Warren, S?ren Nylin
BMC Evolutionary Biology , 2009, DOI: 10.1186/1471-2148-9-92
Abstract: We investigate the species relationships and their evolutionary history over time in the genus Polygonia using DNA sequences from two mitochondrial gene regions (COI and ND1, total 1931 bp) and four nuclear gene regions (EF-1α, wingless, GAPDH and RpS5, total 2948 bp). We found clear, strongly supported conflict between mitochondrial and nuclear DNA sequences in estimating species relationships in the genus Polygonia. Nodes at which there was no conflict tended to have diverged at the same time when analyzed separately, while nodes at which conflict was present diverged at different times. We find that two species create most of the conflict, and attribute the conflict found in Polygonia satyrus to ancient hybridization and conflict found in Polygonia oreas to recent or ongoing hybridization. In both examples, the nuclear gene regions tended to give the phylogenetic relationships of the species supported by morphology and biology.Studies inferring species-level relationships using molecular data should never be based on a single locus. Here we show that the phylogenetic hypothesis generated using mitochondrial DNA gives a very different interpretation of the evolutionary history of Polygonia species compared to that generated from nuclear DNA. We show that possible cases of hybridization in Polygonia are not limited to sister species, but may be inferred further back in time. Furthermore, we provide more evidence that Haldane's effect might not be as strong a process in preventing hybridization in butterflies as has been previously thought.Phylogenetics at the species-level is becoming increasingly important in the study of processes underlying speciation [1,2]. Most species-level phylogenies have until recently been based on only mitochondrial DNA (mtDNA) due to the ease of PCR amplification and its perceived suitability, e.g. due to maternal inheritance (shorter time for coalescence than nuclear DNA (nDNA) because of smaller Ne), lack of recombination and relative
Sustainability: A view from the wind-eroded field
Sustainability: A view from the wind-eroded field

Andrew Warren,

环境科学学报(英文版) , 2007,
Abstract: This paper explores the assessment of sustainability in fields subject to wind erosion. In the first part, simple sustainability audits are examined, as of soil depth and nutrients. Direct measurement of these characteristics has many problems, largely because of huge variability in space and time at all scales. Modelling still has its problems, but it may be possible to overcome many of them soon. It is true that wind erosion preferentially removes soil nutrients, but there are imponderables even here. The nutrient balance in many of these soils includes considerable input from dust. In West Africa, it has been shown that the amounts of calcium and potassium that are added in dust are sufficient to fertilize dispersed crops. In mildly acidic sandy soils, such as those found on the widespread palaeo-aeolian deposits, much of the phosphorus is fixed and unavailable to plants by the time it is removed by wind erosion, so that erosion has no added downside. Most of the nutrients carried by dust have been shown to travel close to the ground (even when they are attached to dust-sized particles), and so are trapped in nearby fallow strips, and are thus not lost to the farming system. Second, the sustainability of a whole semi-arid farming system is explored. Wind erosion in semi-arid areas (like China, the Sahel and Northwestern Europe) generally takes place on aeolian deposits of the recent geological past. Most of these soils are deep enough to withstand centuries of wind erosion before they are totally lost to production, and some of these soils have greater fertility at greater depth (so that wind erosion may even improve the soil). Finally some remarks are made about environmental change in relation to sustainability.
Dimensional Structures of Human Societies: An Alternative Interpretation of Agoramétrie-Type Survey Results  [PDF]
Warren D. TenHouten
Sociology Mind (SM) , 2018, DOI: 10.4236/sm.2018.82013
Abstract: Surveys of social and political issues using Agoramétrie methodology drawn from widely different social environments have revealed consistent two-dimensional, factor-analytic solutions. Rukavishnikov and van Meter refer to the first dimension as “modern-radical/traditional-conservative” and “openness/closedness”; the second, as “frustration/satisfaction” and “emotional/non-emotional”. These distinctions are critically evaluated and an alternative interpretation is proposed. Two sociorelational dimensions are drawn from Douglas’s Grid-Group Theory, interpreted as two pairs of opposite social-relations models of Fiske-Haslam-Bolender Relational Models Theory. Accordingly, the Group emphasizes communal-sharing (CS) as opposed to market-pricing (MP); the Grid, authority-ranking (AR) as opposed to equality-matching (EM). Affect-Spectrum Theory links valenced, secondary-level emotions to quadrants of the Grid-Group space, with quadrants characterized by sets of secondary-level emotions. Van Meter’s hypothesis that the two-dimensional survey results suggest two kinds of human societies, the “cooperative” and the “hierarchical” is reasonable, but it is proposed that the sociorelational bases of these societal types are the complementarities between CS and EM, and between AR and MP. Neurosociological implications of the data and theorizing are discussed.
Anger and Contested Place in the Social World  [PDF]
Warren D. TenHouten
Sociology Mind (SM) , 2018, DOI: 10.4236/sm.2018.83018
Abstract: The root term angr includes in its meaning anger-rage and sadness-grief, which today are recognized as two primary or basic emotions. Anger involves the brain’s “rage system”, an architecture widely represented in the animal kingdom. Anger and its opposite, fear, are the positive and negative adaptive reactions to the existential problem of social hierarchy and associated competition for resources and opportunities. Anger’s valence can be negative insofar as it is unpleasant for all involved but is primarily positive because anger is goal-seeking and approach-oriented. Anger functions to assert social dominance, and detection of anger in others reveals possible challenge intentions. The management and control of anger is linked to impulsivity, patience, and tolerance. While the Russell-Fehr model views emotions such as aggressiveness, sullenness, and resentment as subcategories of anger, we rather contend that anger is an embedded subcategory of secondary- and tertiary-level emotions. We model one such emotion, resentment, as a tertiary emotion. Resentment has anger as its key emotion, and includes the primary emotions disgust and surprise, which can combine in pairs to form outrage, contempt, and shock. A classification of 7 secondary and 21 tertiary emotions in which anger is embedded is presented. We argue that the classification of complex emotions is a potential, and necessary, project for the sociology-anthropology of emotions.
Anticipation and Exploration of Nature and the Social World: Natural-History versus Social-Cognition Theories of the Evolution of Human Intelligence  [PDF]
Warren D. TenHouten
Sociology Mind (SM) , 2018, DOI: 10.4236/sm.2018.84021
Abstract: The social-cognition or social-brain theory of human intelligence holds that it is the competitive, hierarchical nature of human society that provided the field of relationality that has fueled the extraordinary development of the human brain and mind. We argue that competitive, agonic society has, in both primates and humans, retarded the development of adaptive intelligence, as evidenced by impressive ethological evidence from primate research. The other kind of sociality, affiliative and hedonic, frees individuals from preoccupation with social hierarchy, but does not motivate anticipatory, goal-seeking behavior. Thus, neither agonic nor hedonic social relations account for human brain evolution, which can rather be attributed to focus on goal-seeking in the natural-history environment, where attention is directed toward exploration, manipulation and utilization of objects, phenomena, and resources. We review ethological evidence from primate and human studies, consider the distinction between fluid intelligence and executive-level functioning, and conclude that the natural-history model appears most consistent with available evidence. Anticipation is described as a primary emotion that develops very early in life, with territoriality as its underlying dimension, and with an elaborate seeking system as its brain infrastructure.
Limits on the star formation rates of z>2 damped Ly-alpha systems from H-alpha spectroscopy
Andrew J. Bunker,Stephen J. Warren,D. L. Clements,Gerard M. Williger,P. C. Hewett
Physics , 1998,
Abstract: We present the results of a long-slit K-band spectroscopic search with CGS4 on UKIRT for H-alpha emission from the objects responsible for high-redshift (z > 2) damped Ly-alpha absorption systems. The objective was to measure the star-formation rates in these systems. However, no H-alpha emission was detected above our 3-sigma limits of f < 10E-19 W/m**2, corresponding to star formation rates < 10 M_sun/yr/h**2 (q_0=0.5). These upper limits are more meaningful than those from searches for Ly-alpha emission because the H-alpha line is unaffected by resonant scattering. For q_0=0.5 our limits are in conflict with the star formation rates predicted under the assumption that the high-z DLAs are the fully-formed galactic-disk counterparts of today's massive spiral galaxies. Deeper spectroscopy is needed to test this picture for q_0=0.0. A programme of NICMOS imaging observations currently underway, combined with VLT spectroscopy, will provide a detailed picture of the link between DLAs and young galaxies.
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