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Nomenclatura Unesco > (55) Historia

Mostrando recursos 61 - 80 de 149,866

61. PALEOSOL-BEARING ALLUVIAL SUCCESSIONS - Northern New Mexico; U. S. A. Allocyclic; Autocyclic; Origins Of; David M. Cleveland; Stacy C. Atchley; Lee; C. Nordt
ABSTRACT: Two age-equivalent Upper Triassic fluvial successions deposited on the continental interior of the southwestern United States were evaluated using an adapted marine stacking-pattern analysis methodology. A three-tier cyclic hierarchy is present in the strata at both study areas. Meter-scale fining-upward fluvial aggradation cycles (FACs) comprise fluvial aggradational cycle sets (FACSETs) 4–15 m thick (avg. 8.4 m). FACSETs in turn stack into four fluvial sequences 26–48 m thick (avg. 41 m). Within these sequences, transgressive-systems-tract equivalents (TE) are characterized by channel sands and associated minor overbank deposits and relatively immature paleosols (i.e., high rates of deposition), whereas highstand- to falling-stage-systems-tract...

62. Analysing forensic processes: Taking time into account - Paul J. Taylor; Karen Jacques; Ellen Giebels; Mark Levine; Rachel Best; Jan Winter; Gina Rossi
A great deal of forensic psychology concerns sequences of behaviours or events. In this paper, we review some recent efforts to examine forensic issues as sequences, discuss some of the contemporary methodologies involved, and highlight some of the lessons that emerge from this research. Specifically, we show: (i) how research on public violence has benefited from studying incidents as patterns of cues and responses among perpetrators and bystanders; (ii) how regularities in the histories of those who undertake suicide terrorism may be identified by mapping their life events on a graphical timeline; and (iii) how sequence-based correlation coefficients make it...

63. Annals of Combinatorics Properties of Subtree-Prune-and-Regraft Operations on Totally-Ordered Phylogenetic Trees - Yun S. Song
AMS Subject Classification: 05C05, 92D15 Abstract. We study some properties of subtree-prune-and-regraft (SPR) operations on leaflabelled rooted binary trees in which internal vertices are totally ordered. Since biological events occur with certain time ordering, sometimes such totally-ordered trees must be used to avoid possible contradictions in representing evolutionary histories of biological sequences. Compared to the case of plain leaf-labelled rooted binary trees where internal vertices are only partially ordered, SPR operations on totally-ordered trees are more constrained and therefore more difficult to study. In this paper, we investigate the unit-neighbourhood U(T), defined as the set of totally-ordered trees one SPR...

64. F S P M 0 4 POSTERS- SESSION 5 Simulation of evolutionary process of tree shape using cubic module model - Shigeaki F. Hasegawa; Tetsuoh Shirota; Takashi Kohyama
Shape of trees have gathered interest of many plant ecologists since they are important in tree life histories (Hallé et al. 1978, Küppers 1989). There are some studies focusing on the ecological significance of tree shape (Iwasa et al. 1985). However, there are few studies to answer to the fundamental question that "Why are shapes of trees such like? ". In this study, we constructed a plant

65. Land Cover/Land Use with GIS Support................................................................................................. 13 - Fisheries Component
2008APE1: Developing an empirical framework for reconstructing and modeling UMRS floodplain disturbance histories.................................................................................................................................. 20 2008APE2: Setting quantitative fish management targets for LTRMP monitoring............................ 24 2008APE3: Development of survey methods to spatially map mussel assemblages in the UMRS...... 26 2008APE4: Analysis and support of aquatic vegetation sampling data in Pools 6, 9, 18, and 19........ 29

66. Emerging Convergence? Thoughts on museums, archives, libraries and professional training - J. Trant; Museum Informatics
While ‘convergence ’ has been a topic of much discussion in the museum, archive and library communities, the emerging similarities between these three types of cultural heritage institutions – most apparent in their on-line activities – are not yet evident in the education of professionals who work in them. Curriculum models still support traditional definitions of the roles, functions and audiences of archives, libraries and museums. Professional practice can evolve in the context provided by digital heritage and digital curation, and to respond in a manner that supports common goals across institution types. New interdisciplinary foci for professional training can...

67. Analysis of Google Logs Retention Policies - Vincent Toubiana; Helen Nissenbaum
Abstract. To preserve search log data utility, Google groups search queries in log bundles by deleting the last octet of logged IP address. Because these bundles still contain identifying information, part of these search logs can be de-anonymized [27]. Without an external audit of these search logs, it is currently impossible to evaluate their robustness against de-anonymizing attacks. In this paper, we leverage log retention policy ambiguities to show that quasi-identifiers could be stored in sanitized search query logs and could help to de-anonymize user searches. This paper refers to Google Search and Google Suggest log retention policies and shows...

68. Ovid Technologies. Medical Information: Literature Records, Full Texts, and Clinical Decision Support in a One-Stop-Shop - Literaturnachweise Volltexte
Abstract. In Ovid Technologies, the company histories of BRS, SilverPlatter, WoltersKluwer, and the "old " Ovid come together. Our article describes one of the two platforms (Ovid) and neglects the other (SilverPlatter). Ovid is specialized in medical information. Bibliographic database records and digital full texts are linked whereever it is possible. The article analyses the company, Ovid's retrieval system, full text linking, medical decision support systems, administrator's functions to create hyperlinks and ends with a short SWOT analysis concerning especially the German information market. Zusammenfassung. Ovid Technologies vereinigt die Unternehmensgeschichte von BRS, SilverPlatter, WoltersKluwer und dem "alten " Ovid. Unser...

69. Einaudi for their assistance with data analysis, and Claire Black for her transcription of all interviews and assistance in preparing the document. The Effects of Temporary Services and Contracting Out on Low-Skilled Workers: - George Erickcek; Susan Houseman; Arne Kalleberg
Evidence from Auto Suppliers, Hospitals, and Public Schools We examine why employers use temporary agency and contract company workers and the implications of these practices for the wages, benefits, and working conditions of workers in low-skilled labor markets. Through intensive case studies in manufacturing (automotive supply), services (hospitals), and public sector (primary and secondary schools) industries, we define the circumstances under which these workers are likely to be adversely affected, minimally affected, or even benefitted by such outsourcing. Adverse effects on compensation are clearest when companies substitute agency temporaries or contract company workers for regular employees on a long-term basis...

70. Received 03.viii.2009, accepted 08.viii.2009. - Arthropod Systematics; Stefan Richter; Ole S. Møller; Christian S. Wirkner
Published online at www.arthropod-systematics.de on 25.viii.2009. The title refers to a symposium held in Rostock from 7th–11th October 2008 organized by the authors. The symposium comprised 23 invited lectures and 46 posters on different aspects of crustacean phylogenetics. Papers published in this and the previous 150 years after Darwin’s ‘Origin of Species ’ and 100 years after W.T. Calman’s influential treatment on crustacean morphology and classification, crustacean phylogenetics remains an active, exciting and controversial field of research. An international symposium held from 7 th –11 th October 2008 at the University of Rostock attempted to summarize the latest developments. Molecular...

71. $rec.titulo - Lessons Learned From A State-funded; Kevin Hollenbeck; Bridget Timmeney
Findings from an evaluation of a workplace literacy program funded by the State of Indiana are presented. Working with employers, providers were given considerable latitude to design their own training regimens. The state awarded certificates to workers who achieved certain levels of proficiency in reading, math, critical thinking, problem solving (assessed by CASAS), and computer literacy (certified by IC3). The evaluation relied on qualitative and quantitative data. Multiple site visits were undertaken and a survey of participants (n = 1800), learning gains, and earnings histories were quantitatively analyzed. Key findings include a significant interest in college attendance by incumbent workers,...

72. Molhoek in preparing this paper. THE USE OF PROFILING TO TARGET SERVICES - Randall W. Eberts; Cheryl Wiessner; Craig Schreuder; Jean Kimmel; Babette Schmitt; Wei-jang Huang; In State; Welfare-to-work Programs
The purpose of this paper is to provide preliminary information about the design of a pilot project to test the efficacy of profiling and referring welfare-to-work participants. Welfare reform requires welfare recipients, with few exceptions, to participate in work activities and ultimately become economically self-sufficient. Welfare recipients possess a wide variation in job readiness skills, ranging from those who are ready and able to work to those who face significant barriers to employment. The challenge of the local administrator of welfare-to-work programs is to target services to those who need them the most. Yet, most programs provide the same services...

73. Earnings Losses of Displaced Workers Upjohn Institute Staff Working Paper 92-11 - Louis Jacobson; Robert J. Lalonde; Daniel G. Sullivan; Robert Gibbons; John Ham; Daniel Hamermesh; Bruce Meyer; Canice Prendergast
The 1990-1991 recession has intensified concerns about the consequences of workers ’ job losses. To estimate the magnitude and temporal pattern of displaced workers ’ earnings losses, we exploit an unusual administrative data set that includes both employees ’ quarterly earnings histories and information about their firms. We find that when high-tenure workers separate from distressed firms their long-term losses average 25 percent per year. Further, their losses mount even prior to separation, are not limited to workers in a few industrial sectors, and are substantial even for those who find new jobs in similar firms. This evidence suggests that...

74. TEMPOS: A Platform for Developing Temporal Applications on top of Object DBMS - Marlon Dumas; Pierre-claude Scholl; Copyright C Marlon Dumas; Marie-Christine Fauvet; Marie-christine Fauvet; Christian S. Jensen (codirector; Michael H. Bohlen; Heidi Gregersen; Dieter Pfoser; Simonas Saltenis; Janne Skyt; Giedrius Slivinskas; Kristian Torp; Richard T. Snodgrass (codirector; Bongki Moon; Thomas Myrach; Universty Of Bern; Michael D. Soo; Amazon. Com; Andreas Steiner Timeconsult
This paper presents TEMPOS 1 , a set of models and languages intended to seamlessly extend the ODMG object database standard with temporal functionalities. The proposed models exploit objectoriented technology to meet some important, yet traditionally neglected design criteria, related to legacy code migration and representation independence. Two complementary ways for accessing temporal data are offered: a query language and a visual browser. The former one, namely TEMPOQL, is an extension of OQL supporting the manipulation of histories regardless of their representations, by composition of functional constructs. Thereby, the abstraction principle of object-orientation is fulfilled, and the functional nature of...

75. Extracting Situation Facts from Activation Value Histories in Behavior-Based Robots - Frank Schönherr; Mihaela Cistelecan; Joachim Hertzberg; Thomas Christaller
The paper presents a new technique for extracting symbolic ground facts out of the sensor data stream in autonomous robots for use under hybrid control architectures, which comprise a behavior-based and a deliberative part. The sensor data are used in the form of time series curves of behavior activation values. Recurring patterns in individual behavior activation curves are aggregated to well-defined patterns, like edges and levels, called qualitative activations. Sets of qualitative activations for different behaviors occurring in the same interval of time are summed to activation gestalts. Sequences of activation gestalts are used for defining chronicles, the recognition of...

76. Knowledge Specification for Automatic Performance Analysis - Thomas Fahringer; Michael Gerndt; Bernd Mohr; Felix Wolf; Graham Riley; Jesper Larsson Träff
The lack of a useful and accurate software infrastructure for measuring, modeling, and analyzing the performance of a wide variety of programming paradigms and architecture platforms is a critical issue for performance-oriented program development. Commonly, a cyclic process is employed to tune the performance of programs which includes the gathering of performance data through measurement and prediction and the analysis of the data collected on-the-fly or during a postmortem session to yield summary statistics and histories of program behavior. Usually, this process also involves comparison of the performance data with that of previous program versions. So far most approaches require...

77. Using Behavior Activation Value Histories for Updating Symbolic Facts - Frank Schönherr; Mihaela Cistelecan; Joachim Hertzberg; Thomas Christaller
The paper presents a new technique for extracting symbolic ground facts out of the sensor data stream in autonomous robots for use under hybrid control architectures. The sensor data are used in the form of time series curves of behavior activation values, yielding an image of the environment as perceived through the eyes of useful behaviors. Similar progressions in individual behavior activation curves are aggregated to well-defined patterns, like edges and levels, called qualitative activations. Sets of qualitative activations for different behaviors occurring in the same interval of time are summed to activation gestalts. Sequences of activation gestalts are used...

78. 1 SEMANTIC-BASED DECOMPOSITION OF TRANSACTIONS - Paul Ammann; Sushil Jajodia; Indrakshi Ray
In some database applications the traditional approach of serializability, in which transactions appear to execute atomically and in isolation on a consistent database state, fails to satisfy performance requirements. Although many researchers have investigated the process of decomposing transactions into steps to increase concurrency, such research typically focuses on providing algorithms necessary to implement a decomposition supplied by the database application developer and pays relatively little attention to what constitutes a desirable decomposition or how the developer should obtain one. We focus on the decomposition itself. A decomposition generates proof obligations whose discharge ensures desirable properties with respect to the...

79. Implementing Semantic-Based Decomposition of Transactions - Sushil Jajodia; Indrakshi Ray; Paul Ammann
. In some database applications, performance requirements are not satisfied by the traditional approach of serializability, in which transactions appear to execute atomically and in isolation on a consistent database state. Although many researchers have investigated the process of decomposing transactions into steps to increase concurrency, the focus of the research is typically on implementing a decomposition supplied by the database application developer, with relatively little attention to what constitutes a desirable decomposition and how the developer should obtain such a decomposition. In our research, we focus on the decomposition process itself. In [2], we introduced the notion of semantic...

80. Using Formal Methods To Reason About Semantics-Based Decompositions Of Transactions - Paul Ammann; Sushil Jajodia; Indrakshi Ray
Many researchers have investigated the process of decomposing transactions into smaller pieces to increase concurrency. The focus of the research is typically on implementing a decomposition supplied by the database application developer, with relatively little attention to what constitutes a desirable decomposition and how the developer should obtain such a decomposition. In this paper, we argue that the decomposition process itself is worthy of attention. A decomposition generates a set of proof obligations that must be satisfied to show that a particular decomposition correctly models the original collection of transactions. We introduce the notion of semantic histories to formulate and...

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