642 research outputs found

    Римская археология для историков

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    Монография представляет археологию как науку и показывает, каким образом привлечение данных римской археологии и археологических методов исследования углубляет изучение античной истории.Настоящая монография издана в серии "Approaching the Ancient World". На многочисленных иллюстрациях изображены археологические памятники и артефакты древнего Рима. Приложения: библиография (с. 164-184), общий указатель (с. 185-192)

    Hand and wrist configurations in patients with Carpal Tunnel Syndrome

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    The association between hand and wrist configurations was investigated in this study. The hand and wrist dimensions of sixty patients with carpal tunnel syndrome and sixty healthy control subjects were measured using specific anatomical landmarks. The palm width was significantly greater in the patient group. There was no significant difference in the hand length between the two groups. Both the wrist width and wrist depth were significantly greater in the patient group. The hand ratio and the wrist ratio were significantly smaller in the patient group indicating that the latter had squarer hands and wrists than the control group respectively. This suggests that the anatomy of the hand and wrist may predispose to carpal tunnel syndrome.peer-reviewe

    Turismo e Romanità: uma nova visa?o de Pompeia (1924-1942): [Translation of: Tourism and Romanità: A new vision of Pompeii (1924-1942)]

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    Em 1958, durante o final da sua longa supervisa?o de escavac?o?es na cidade de Pompeia, Amedeo Maiuri fez numerosas observac?o?es a respeito da interac?a?o existente entre o si?tio arqueolo?gico e os turistas que o visita- ram3. Essas observac?o?es revelaram um propo?sito para o seu trabalho que culminaram na remodelac?a?o das rui?nas da cidade de Pompeia, por meio de novas escavac?o?es e novos projetos de conservac?a?o. Seu foco era o ini?cio da temporada de turismo em Pompeia no me?s de abril, quando observou as primeiras procisso?es ou multido?es de turistas que chegaram a? Porta Mari- na.

    THE EFFECT OF COPPER ON PSEUDOMONAS CUPRODURANS, SP NOV

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    Chemoreceptor Evolution in Hymenoptera and Its Implications for the Evolution of Eusociality.

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    Eusocial insects, mostly Hymenoptera, have evolved unique colonial lifestyles that rely on the perception of social context mainly through pheromones, and chemoreceptors are hypothesized to have played important adaptive roles in the evolution of sociality. However, because chemoreceptor repertoires have been characterized in few social insects and their solitary relatives, a comprehensive examination of this hypothesis has not been possible. Here, we annotate ∼3,000 odorant and gustatory receptors in recently sequenced Hymenoptera genomes and systematically compare >4,000 chemoreceptors from 13 hymenopterans, representing one solitary lineage (wasps) and three independently evolved eusocial lineages (ants and two bees). We observe a strong general tendency for chemoreceptors to expand in Hymenoptera, whereas the specifics of gene gains/losses are highly diverse between lineages. We also find more frequent positive selection on chemoreceptors in a facultative eusocial bee and in the common ancestor of ants compared with solitary wasps. Our results suggest that the frequent expansions of chemoreceptors have facilitated the transition to eusociality. Divergent expression patterns of odorant receptors between honeybee and ants further indicate differential roles of chemoreceptors in parallel trajectories of social evolution

    Chemosensory sensitivity reflects reproductive status in the ant Harpegnathos saltator.

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    Insects communicate with pheromones using sensitive antennal sensilla. Although trace amounts of pheromones can be detected by many insects, context-dependent increased costs of high sensitivity might lead to plasticity in sensillum responsiveness. We have functionally characterized basiconic sensilla of the ant Harpegnathos saltator for responses to general odors in comparison to cuticular hydrocarbons which can act as fertility signals emitted by the principal reproductive(s) of a colony to inhibit reproduction by worker colony members. When released from inhibition workers may become reproductive gamergates. We observed plasticity in olfactory sensitivity after transition to reproductive status with significant reductions in electrophysiological responses to several long-chained cuticular hydrocarbons. Although gamergates lived on average five times longer than non-reproductive workers, the shift to reproductive status rather than age differences matched the pattern of changes in olfactory sensitivity. Decreasing sensillum responsiveness to cuticular hydrocarbons could potentially reduce mutually inhibitory or self-inhibitory effects on gamergate reproduction

    Septimius Severuksen vuosisataisjuhlat yhteisöllisen identiteetin rakentajana

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    Arvosteltu teos: Maintaining loyalty, declaring continuity, legitimizing power: Ludi saeculares of Septimius Severus as a manifestation of the golden age / Jussi Rantala. Tampere : Tampere University Press, 2013

    Spontaneous dehydrocoupling in peri-substituted phosphine-borane adducts

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    This work was financially supported by the EPSRC and COST action CM1302 SIPs.Bis(borane) adducts Acenap(PiPr2·BH3)(PRH·BH3) (Acenap = acenaphthene-5,6-diyl; 4a, R = Ph; 4b, R = ferrocenyl, Fc; 4c, R = H) were synthesised by the reaction of excess H3B·SMe2 with either phosphino-phosphonium salts [Acenap(PiPr2)(PR)]+Cl− (1a, R = Ph; 1b, R = Fc), or bis(phosphine) Acenap(PiPr2)(PH2) (3). Bis(borane) adducts 4a–c were found to undergo dihydrogen elimination at room temperature, this spontaneous catalyst-free phosphine-borane dehydrocoupling yields BH2 bridged species Acenap(PiPr2)(µ-BH2)(PR·BH3) (5a, R = Ph; 5b, R = Fc; 5c, R = H). Thermolysis of 5c results in loss of the terminal borane moiety to afford Acenap(PiPr2)(µ-BH2)(PH) (14). Single crystal X-ray structures of 3, 4b and 5a–c are reported.Publisher PDFPeer reviewe

    Agile and Lean Systems Engineering: Kanban in Systems Engineering

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    This is the 2nd of two reports that were created for research on this topic funded through SERC. The first report, SERC-TR-032-1 dated March 13, 2012, constituted the 2011-2012 Annual Technical Report and the Final Technical Report of the SERC Research Task RT-6: Software Intensive Systems Data Quality and Estimation Research In Support of Future Defense Cost Analysis. The overall objectives of RT-6 were to use data submitted to DoD in the Software Resources Data Report (SRDR) forms to provide guidance for DoD projects in estimating software costs for future DoD projects. In analyzing the data, the project found variances in productivity data that made such SRDR-based estimates highly variable. The project then performed additional analyses that provided better bases of estimate, but also identified ambiguities in the SRDR data definitions that enabled the project to help the DoD DCARC organization to develop better SRDR data definitions. In SERC-TR-2012-032-1, the resulting Manual provided the guidance elements for software cost estimation performers and users. Several appendices provide further related information on acronyms, sizing, nomograms, work breakdown structures, and references. SERC-TR-2013-032-2 (current report), included the “Software Cost Estimation Metrics Manual.” This constitutes the 2012-2013 Annual Technical Report and the Final Technical Report of the SERC Research Task Order 0024, RT-6: Software Intensive Systems Cost and Schedule Estimation Estimating the cost to develop a software application is different from almost any other manufacturing process. In other manufacturing disciplines, the product is developed once and replicated many times using physical processes. Replication improves physical process productivity (duplicate machines produce more items faster), reduces learning curve effects on people and spreads unit cost over many items. Whereas a software application is a single production item, i.e. every application is unique. The only physical processes are the documentation of ideas, their translation into computer instructions and their validation and verification. Production productivity reduces, not increases, when more people are employed to develop the software application. Savings through replication are only realized in the development processes and on the learning curve effects on the management and technical staff. Unit cost is not reduced by creating the software application over and over again. This manual helps analysts and decision makers develop accurate, easy and quick software cost estimates for different operating environments such as ground, shipboard, air and space. It was developed by the Air Force Cost Analysis Agency (AFCAA) in conjunction with DoD Service Cost Agencies, and assisted by the SERC through involving the University of Southern California and the Naval Postgraduate School. The intent is to improve quality and consistency of estimating methods across cost agencies and program offices through guidance, standardization, and knowledge sharing. The manual consists of chapters on metric definitions, e.g., what is meant by equivalent lines of code, examples of metric definitions from commercially available cost models, the data collection and repository form, guidelines for preparing the data for analysis, analysis results, cost estimating relationships found in the data, productivity benchmarks, future cost estimation challenges and a very large appendix.SERCU.S. Department of DefenseSystems Engineering Research Center (SERC)Systems Engineering Research Center (SERC) Contract H98230-08-D-0171
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