bluuebunny/crossref_metadata_2025_split huggingface dataset:
An improved particle filter for sparse environments
Authors: Prestes Edson , Ritt Marcus , Führ Gustavo 
Published: December 2010

Abstract
In this paper, we combine a path planner based on Boundary Value Problems (BVP) and Monte Carlo Localization (MCL) to solve the wake-up robot problem in a sparse environment. This problem is difficult since large regions of sparse environments do not provide relevant information for the robot to recover its pose. We propose a novel method that distributes particle poses only in relevant parts of the environment and leads the robot along these regions using the numeric solution of a BVP. Several experiments show that the improved method leads to a better initial particle distribution and a better convergence of the localization process.
Architecture for animation of affective behaviors in pedagogical agents
Authors: Motola Ronaldo , Jaques Patrícia Augustin , Axt Margarete , Vicari Rosa 
Published: December 2010

AbstractThis article introduces an open-source module responsible for the presentation of verbal (speech) and corporal (animation) behaviors of animated pedagogical agents. This module can be inserted into any learning environment regardless of application domain and platform, being executable under different operating systems. It was implemented in Java as a reactive agent (named Body agent) that communicates with the agent’s Mind through a language known as FIPA-ACL. Therefore, it may be inserted into any intelligent learning environment that is also capable to communicate using FIPA-ACL. Persistence of information is ensured by XML files, increasing the agent’s portability. The agent also includes a mechanism for automatically updating new behaviors and characters once available in the server. A simulation environment was conceived to test the proposed agent.
Performance evaluation of a discovery and scheduling protocol for multihop ad hoc mobile grids
Authors: Gomes Antônio Tadeu Azevedo , Ziviani Artur , Lima Luciana dos Santos , Endler Markus 
Published: December 2010

Abstract
Despite the many research efforts addressing the integration of mobile nodes into grids, only a few of them have considered the establishment of mobile grids over wireless ad hoc networks (hereafter,mobile ad hoc grids). Clearly, such grids need specialized resource discovery and scheduling mechanisms. To the best of our knowledge, though, the research on these mechanisms for mobile ad hoc grids is still preliminary. Besides, and more importantly, it has approached discovery and scheduling as separate mechanisms, which, we argue, is not suitable for mobile ad hoc grids. In this paper, we propose the integration of resource discovery and scheduling for mobile ad hoc grids into a single protocol called DICHOTOMY (Discovery and sCHeduling prOTOcol for MobilitY). This protocol allows computational tasks to be distributed appropriately in a mobile ad hoc grid, while mitigating the overhead of discovery messages exchanged among the nodes. Our experiments show that the protocol: (i) does proper scheduling, allowing an efficient load balancing among the nodes and helping with lowering the average completion time of tasks; (ii) keeps the discovery efficiency at acceptable levels in mobility scenarios and (iii) scales very well with respect to an increasing number of nodes, both in the total amount of energy savings due to packet transmissions and the distribution of such savings among the nodes.
scriptLattes: an open-source knowledge extraction system from the Lattes platform
Authors: Mena-Chalco Jesús Pascual , Junior Roberto Marcondes Cesar 
Published: December 2010

Abstract
The Lattes platform is the major scientific information system maintained by the National Council for Scientific and Technological Development (CNPq). This platform allows to manage the curricular information of researchers and institutions working in Brazil based on the so called Lattes Curriculum. However, the public information is individually available for each researcher, not providing the automatic creation of reports of several scientific productions for research groups. It is thus difficult to extract and to summarize useful knowledge for medium to large size groups of researchers. This paper describes the design, implementation and experiences with scriptLattes: an open-source system to create academic reports of groups based on curricula of the Lattes Database. The scriptLattes system is composed by the following modules: (a) data selection, (b) data preprocessing, (c) redundancy treatment, (d) collaboration graph generation among group members, (e) research map generation based on geographical information, and (f) automatic report creation of bibliographical, technical and artistic production, and academic supervisions. The system has been extensively tested for a large variety of research groups of Brazilian institutions, and the generated reports have shown an alternative to easily extract knowledge from data in the context of Lattes platform. The source code, usage instructions and examples are available at http://scriptlattes.sourceforge.net/.
Aspects of planning support for human-agent coalitions
Authors: de Albuquerque Siebra Clauirton , Lino Natasha Correia Queiroz 
Published: December 2010

AbstractThis paper analyses aspects associated with the development of joint human-agent planning agents, showing that they can be implemented, in a unified way, via a constraint-based ontology and related functions. The constraints’ properties have already been used by several planning approaches as an option to improve their efficiency and expressiveness. This work demonstrates that such properties can also be employed to implement collaborative concepts, which are maintained transparent to the planning mechanisms. Furthermore, the use of constraints provides several facilities to the implementation of advanced mechanisms associated with the human interaction, as also demonstrated here.
Significance of telemedicine for video image transmission of endoscopic retrograde cholangiopancreatography and endoscopic ultrasonography procedures
Authors: Shimizu Shuji , Itaba Soichi , Yada Shinichiro , Takahata Shunichi , Nakashima Naoki , Okamura Koji , Rerknimitr Rungsun , Akaraviputh Thawatchai , Lu Xinghua , Tanaka Masao 
Published: December 2010

AbstractBackgroundWith the rapid and marked progress in gastrointestinal endoscopy, the education of doctors in many new diagnostic and therapeutic procedures is of increasing importance. Telecommunications (telemedicine) is very useful and cost‐effective for doctors’ continuing exposure to advanced skills, including those needed for hepato‐pancreato‐biliary diseases. Nevertheless, telemedicine in endoscopy has not yet gained much popularity. We have successfully established a new system which solves the problems of conventional ones, namely poor streaming images and the need for special expensive teleconferencing equipment.MethodsThe digital video transport system, free software that transforms digital video signals directly into Internet Protocol without any analog conversion, was installed on a personal computer using a network with as much as 30 Mbps per channel, thereby providing more than 200 times greater information volume than the conventional system. Kyushu University Hospital in Japan was linked internationally to worldwide academic networks, using security software to protect patients’ privacy.ResultsOf the 188 telecommunications link‐ups involving 108 institutions in 23 countries performed between February 2003 and August 2009, 55 events were endoscopy‐related, 19 were live demonstrations, and 36 were gastrointestinal teleconferences with interactive discussions. The frame rate of the transmitted pictures was 30/s, thus preserving smooth high‐quality streaming.ConclusionsThis paper documents the first time that an advanced tele‐endoscopy system has been established over such a wide area using academic high‐volume networks, funded by the various governments, and which is now available all over the world. The benefits of a network dedicated to research and education have barely been recognized in the medical community. We believe our cutting‐edge system will be a milestone in endoscopy and will improve the quality of gastrointestinal education, especially with respect to endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic ultrasonography (EUS) procedures.
Climate change in Norway: warm summers limit grouse reproduction
Authors: Selås Vidar , Sonerud Geir A. , Framstad Erik , Kålås John Atle , Kobro Sverre , Pedersen Helge B. , Spidsø Tor K. , Wiig Øystein 
Published: December 2010

AbstractGrouse and vole numbers may peak after peaks in the seed crop of bilberry (Vaccinium myrtillus) because of reduced levels of feeding deterrents in bilberry plants. We predicted that grouse reproduction depends also on summer (June–September) temperatures in the 2 previous years, because bilberry plants will be less exhausted after a high seed crop in or after warm summers, and thus rebuild their chemical defence more quickly. After berry peak years, population indices of capercaillie (Tetrao urogallus) and bank vole (Myodes glareolus) in southern Norway were negatively related to summer temperatures in the previous year or previous 2 years. Willow grouse (Lagopus lagopus) chick production in five areas in Norway was negatively related to summer temperatures in the 2 previous years when controlling for vole density. A similar pattern was found for the bilberry‐feeding moth (Eulithis populata), an important prey for grouse chicks. In eastern Norway, autumn densities of capercaillie and black grouse (Tetrao tetrix) were more likely to peak in vole peak years at high altitudes, where summer temperatures are low. We conclude that high summer temperatures may limit grouse reproduction through the effect on bilberry plants and that a warm climate thus adversely affects population levels of grouse.
Erratum: Isolated Diaphyseal Fractures of the Radius in Skeletally Immature Patients
Authors: Guitton Thierry G. , van Dijk C. Niek , Raaymakers Ernst L. , Ring David 
Published: December 2010

Erratum to: HAND (2010) 5:251–255 DOI 10.1007/s11552-009-9238-z The name of the second author, C. Niek van Dijk, was displayed incorrectly. We apologize for the error.
Lipase‐Catalyzed Irreversible Transesterification of Jatropha Curcas L. Seed Oil to Fatty Acid Esters: An Optimization Study
Authors: Su Erzheng , Du Liqin , Gong Xiangyu , Wang Pixiang 
Published: December 2010

AbstractIn this work, fatty acid ethyl esters were produced from the lipase‐catalyzed irreversible transesterification reaction between Jatropha oil and diethyl carbonate (DEC). Response surface methodology (RSM) based on central composite design (CCD) was used to optimize the five important reaction variables for the irreversible transesterification of Jatropha oil in a solvent‐free system. The optimum conditions for the transesterification were a reaction time of 13.3 h, a temperature of 44.5 °C, a lipase amount of 13.7% (w/w), a DEC to Jatropha oil molar ratio of 3.75:1 and no need for adding water. The optimal predicted yield of fatty acid esters was 97.7% and the actual value was 96.2%. The results showed that the RSM based on CCD was adaptable for a fatty acid esters yield study for the current transesterification system.
Health Care Waste Management and Environmentally Preferable Purchasing
Authors: Brusco Jennifer M. , Ogg Mary 
Published: December 2010

AbstractThe nation's health care system produces a large amount of waste, both hazardous and nonhazardous; however, there are simple steps that any health care professional can take to minimize the effects of health care waste on the environment and human health. Not only can health care professionals reduce, reuse, and recycle, but they can also make smarter, “green” purchasing decisions. AORN J 92 (December 2010) XX‐XX. © AORN, Inc, 2010.
Provenance of loess from the Spanish central region: chemometric interpretation
Authors: GARCÍA R. , PETIT-DOMÍNGUEZ M. D. , RUCANDIO M. I. , GONZÁLEZ J. A. 
Published: December 2010

AbstractIn this work our purposes are (1) geochemical characterization of loess (‘primary loess’ or ‘true loess’ and ‘secondary loess’ or ‘loess-like deposits’) located in the centre of the Iberian Peninsula, (2) systematic study of element behaviour during pedogenesis and (3) evaluation of the suitability of using the geochemistry of loess to establish the average composition of these discontinuous aeolian sedimentary covers in central Spain. Several analyses were carried out on the bulk sample and on the sandy and clay fractions (mineralogical composition by X-ray diffraction, mineralogical studies of heavy minerals by petrographical microscopy and chemical composition by flame atomic absorption spectrometry). Loess from the Spanish central region has a local origin. The presence of gypsum in the ‘loess-like’ deposits reaches values two times higher than in ‘true loess’, and ‘true loess’ has a higher concentration of quartz, calcite and kaolinite. Regarding chemical composition, similar concentrations of Ca, K, Mg and Na were found, although it is important to note the higher concentration of Na in some of the samples.
The loss, discovery, and rediscovery of the crew of U.S. Navy LA-9 at Kronborg Glacier, east Greenland
Authors: Brooks Kent 
Published: December 2010

ABSTRACTIn January 1962, a US Navy aircraft patroling the Denmark Stait mysteriously disappeared. In spite of an international search continuing over several weeks, the crash was first found accidentally 4.5 years later by geologists, but subsequently it was discovered that all the bodies had not been returned. It was not until 2009 that the story was brought to a close with a ceremony at the naval air base in Jacksonville, Florida.
Sovereignty watch: claimant states, resources, and territory in contemporary Antarctica
Authors: Dodds Klaus J. 
Published: December 2010

ABSTRACTThis article is concerned with the contemporary Antarctic and the kinds of sovereignty performances undertaken by claimant states such as Australia. Notwithstanding the entry into force of the Antarctic Treaty, claimant states have used, what this article terms, ‘treaty sovereignty’ further to entrench their sovereign rights, especially within public culture. Using Australia as a detailed example, the article considers how a range of activities including anti-whaling developments alongside contemporary public commentary has on the one hand stressed ‘sovereign rights’ and yet on the other hand, revealed a sense of anxiety and fear regarding the role of others; what one might term overall a form of ‘sovereignty watch’. In conclusion, the paper speculates on whether the treaty parties are entering an unstable phase of Antarctic co-existence precisely because of the kinds of behaviours that ‘treaty sovereignty’ encourages.
The ‘American supply trail’: archaeological notes on the remains of the Ziegler polar expedition in Zemlya Frantsa-Iosifa, 1903–1905
Authors: Capelotti P.J. 
Published: December 2010

ABSTRACTBetween 1898 and 1905, three American expeditions attempted to reach the geographical North Pole from the archipelago of Zemlya Frantsa-Iosifa [Franz Josef Land] and each went to extraordinary and expensive lengths to stage their work. The third of these, the Ziegler polar expedition (1903–1905), led by Anthony Fiala and funded by the American baking soda tycoon William Ziegler, set up numerous camps and caches of supplies along its various expedition routes through the islands. The papers of Anton Vedoe and Ernest Leffingwell at the Rauner Special Collections Library at Dartmouth College reveal both the locations and contents of the caches Fiala ordered to be established in spring 1905, as he made his second and final attempt to reach the pole. These caches extend from the expedition base camp (Camp Abruzzi) at Bukhta Teplitsa [Teplitz Bay] on Ostrov Rudol'fa [Rudolf Island] to the main base of the preceding 1901–1902 Baldwin-Ziegler expedition (Camp Ziegler) on Ostrov Aldzher [Alger Island]. Little is known of the condition of these sites, especially the main cache site of Kane Lodge on Ostrov Grili [Greely Island]. As such, they hold the potential to provide new sources of archaeological data to study American polar ambitions at the turn of the 20th century. While these sites remain unexplored, increasing tourism in the islands necessitates informed planning and field research to establish the nature and stability of these remains so that they may be preserved and the potential effects of tourism mitigated.
Dominant diatom species in the Canada Basin in summer 2003, a reported serious melting season
Authors: Zheng Shuxian , Wang Guizhong , Zhang Fang , Cai Minghong , He Jianfeng 
Published: December 2010

ABSTRACTDuring the second Chinese National Arctic Research Expedition in summer 2003, sea ice cores and the underlying water were sampled from seven stations in the pack ice zone of the Canada Basin and were examined with a phase contrast microscope. A total of 102 and 78 algal species were identified for the ice cores and the underlying water, respectively, ranking in the middle range among the surveys of the Arctic Ocean up to the present despite seasonal variability. The Shannon-Wiener indices ranged from 1.40 to 4.88 with an average of 3.58 ± 0.68. Diatom species, especially pennate species, dominated in all the samples. A large number of algal spores were contained in every layer (abundance percentage > 1%). The microalgal abundances ranged from 1.4 × 104 to 8.73 × 105 cells L−1 and the biomass ranged from 0.56 to 89.49 μg L−1. They were correlated with the number of algal species (P < 0.05) but not with the diversity index (P > 0.05). Ice algal maxima were observed in various layers (bottom, interior and near the surface of the ice floes). The phytoplankton biomass in the ice-water interface was one order of magnitude lower than that in the bottom ice (P < 0.05). The species number and the diversity index in water samples, with much less biomass (P < 0.01), were comparative with the ice samples (P > 0.05). Spatial heterogeneity in both horizontal and vertical directions was the main characteristic of the algal community structure, which was demonstrated by the cluster analysis result and the distribution patterns.
The elastic contact influences on passive walking gaits
Authors: Qi Feng , Wang Tianshu , Li Junfeng 
Published: December 2010

SUMMARYThis paper presents a new planar passive dynamic model with contact between the feet and the ground. The Hertz contact law and the approximate Coulomb friction law were introduced into this human-like model. In contrast to McGeer's passive dynamic models, contact stiffness, contact damping, and coefficients of friction were added to characterize the walking model. Through numerical simulation, stable period-one gait and period-two gait cycles were found, and the contact forces were derived from the results. After investigating the effects of the contact parameters on walking gaits, we found that changes in contact stiffness led to changes in the global characteristics of the walking gait, but not in contact damping. The coefficients of friction related to whether the model could walk or not. For the simulation of the routes to chaos, we found that a small contact stiffness value will lead to a delayed point of bifurcation, meaning that a less rigid surface is easier for a passive model to walk on. The effects of contact damping and friction coefficients on routes to chaos were quite small.
Public decisions on animal species: does body size matter?
Authors: KNEGTERING EDO , VAN DER WINDT HENNY J. , SCHOOT UITERKAMP ANTON J. M. 
Published: December 2010

SUMMARYSystematic knowledge about factors affecting the willingness of societies to conserve biodiversity is still scarce. This study investigates the role of body size in national decisions on wild animal species by analysing the average body sizes of the animal species subject to species-specific legislation in the Netherlands over the period 1857–1995. Three legal objectives were distinguished, namely ‘control’, ‘use’ and ‘protection’. For most taxa, average body sizes of species were found to differ significantly between legal objectives within a substantial number of subperiods analysed. Throughout the entire period examined, protected bird, mammal, fish and mollusc species were of smaller average body size than those subject to use legislation and protected bird, mammal and mollusc species were also smaller than those subject to control legislation most of the time. Protected insects were generally larger than those subject to control or use. For vertebrate taxa, average sizes of protected species increased over the time period selected for examination, suggesting that legislation initially excluded larger vertebrates from protection, possibly partly owing to demands to maintain use of these species. The results emphasize that conservation context is important, as other studies suggest that conservation policy generally favours larger species.
Latitudinal variation of demersal fish assemblages in the western Ross Sea
Authors: Clark Malcolm R. , Dunn Matthew R. , McMillan Peter J. , Pinkerton Matthew H. , Stewart Andrew , Hanchet Stuart M. 
Published: December 2010

AbstractDemersal fishes were sampled using a large fish trawl during two surveys carried out in February and March 2004 and 2008 in the Ross Sea, and around seamounts and islands just to the north at 66°S. The distribution and abundance of 65 species collected in these surveys were examined to determine if demersal fish communities varied throughout the area, and what environmental factors might influence this. Species accumulation with sample frequency did not reach an asymptote, but the rate of new species was low suggesting data were adequate for describing the main components of the communities. Three broad assemblages were identified, in the southern Ross Sea (south of 74°S), central–northern Ross Sea (between latitudes 71°–74°S), and the seamounts further north (65°–68°S) where some species more typical of sub-Antarctic latitudes were observed. Multivariate analyses indicated that environmental factors of seafloor rugosity (roughness), temperature, depth, and current speed were the main variables determining patterns in demersal fish communities.
Diverse hypolithic refuge communities in the McMurdo Dry Valleys
Authors: Cowan Don A. , Khan Nuraan , Pointing Stephen B. , Cary S. Craig 
Published: December 2010

AbstractHyper-arid deserts present extreme challenges to life. The environmental buffering provided by quartz and other translucent rocks allows hypolithic microbial communities to develop on sub-soil surfaces of such rocks. These refuge communities have been reported, for many locations worldwide, to be predominantly cyanobacterial in nature. Here we report the discovery in Antarctica’s hyper-arid McMurdo Dry Valleys of three clearly distinguishable types of hypolithic community. Based on gross colonization morphology and identification of dominant taxa, we have classified hypolithic communities as Type I (cyanobacterial dominated), Type II (fungal dominated) and Type III (moss dominated). This discovery supports a growing awareness of the high biocomplexity in Antarctic deserts, emphasizes the possible importance of cryptic microbial communities in nutrient cycling and provides evidence for possible successional community processes within a cold arid landscape.