May

31

Rubisco and some chaperone protein responses to water stress and rewatering at early seedling growth of drought sensitive and tolerant wheat varieties

May 31, 2008 | Comments Off

Abstract  Four wheat varieties differing in their drought tolerance were subjected to severe but recoverable water stress at seedling
stage. Growth parameters, leaf water deficit (WD) and electrolyte leakage (EL) were used to evaluate the stress intensity
and the extent of recovery. The physiological response of the varieties was quite similar under severe drought. Leaf protein
patterns and levels of some individual proteins relevant to ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) maintenance
were studied in control, stressed and recovering plants by electrophoresis and immunoblotting. The bands representing Rubisco
large subunit (RLS), N- and C-terminus of RLS, Rubisco activase (RA) and Rubisco binding protein (RBP, cpn 60), as well as
the chaperone and proteolytic subunits of the Clp protease complex were identified using polyclonal antibodies. Under drought
conditions RLS, Clp proteases and especially RBP were enhanced, whereas the RA band was only slightly affected. The drought
tolerant varieties had higher RBP content in the controls and drought treated plants. Its concentration could be a potential
marker for drought tolerance.

  • Content Type Journal Article
  • Category Original Paper
  • DOI 10.1007/s10725-008-9288-1
  • Authors
    • Klimentina Demirevska, Bulgarian Academy of Sciences Institute of Plant Physiology Acad. G. Bonchev Str., Bdg. 21 Sofia 1113 Bulgaria
    • Lyudmila Simova-Stoilova, Bulgarian Academy of Sciences Institute of Plant Physiology Acad. G. Bonchev Str., Bdg. 21 Sofia 1113 Bulgaria
    • Valya Vassileva, Bulgarian Academy of Sciences Institute of Plant Physiology Acad. G. Bonchev Str., Bdg. 21 Sofia 1113 Bulgaria
    • Urs Feller, University of Bern Institute of Plant Sciences 3013 Bern Switzerland

May

31

Web 2.0: What does it mean to TMS today … and tomorrow?

May 31, 2008 | Comments Off

Web 2.0: What does it mean to TMS today … and tomorrow?

  • Content Type Journal Article
  • Category Presidential Perspective
  • DOI 10.1007/s11837-008-0055-6
  • Authors
    • Diran Apelian

May

29

Designing Service-Based Resource Management Tools for a Healthy Grid Ecosystem

May 29, 2008 | Comments Off

We present an approach for development of Grid resource management tools, where we put into practice internationally established
high-level views of future Grid architectures. The approach addresses fundamental Grid challenges and strives towards a future
vision of the Grid where capabilities are made available as independent and dynamically assembled utilities, enabling run-time
changes in the structure, behavior, and location of software. The presentation is made in terms of design heuristics, design
patterns, and quality attributes, and is centered around the key concepts of co-existence, composability, adoptability, adaptability,
changeability, and interoperability. The practical realization of the approach is illustrated by five case studies (recently
developed Grid tools) high-lighting the most distinct aspects of these key concepts for each tool. The approach contributes
to a healthy Grid ecosystem that promotes a natural selection of “surviving” components through competition, innovation, evolution,
and diversity. In conclusion, this environment facilitates the use and composition of components on a per-component basis.

  • Content Type Book Chapter
  • DOI 10.1007/978-3-540-68111-3_28
  • Authors
    • Erik Elmroth, Umeå University Dept. of Computing Science and HPC2N SE-901 87 Umeå Sweden
    • Francisco Hernández, Umeå University Dept. of Computing Science and HPC2N SE-901 87 Umeå Sweden
    • Johan Tordsson, Umeå University Dept. of Computing Science and HPC2N SE-901 87 Umeå Sweden
    • Per-Olov Östberg, Umeå University Dept. of Computing Science and HPC2N SE-901 87 Umeå Sweden

May

29

A New Assessment of Singularities of Parallel Kinematic Chains

May 29, 2008 | Comments Off

An exhaustive hierarchical-level-based classification of singularities of parallel kinematic chains is presented. Singular
events are identified, interpreted and related to the direct physical phenomena originating them. An in-depth study of the
interaction of different types of singularity is performed.

  • Content Type Book Chapter
  • DOI 10.1007/978-1-4020-8600-7_1
  • Authors
    • Michele Conconi, University of Bologna DIEM – Department of Mechanical Engineering Italy
    • Marco Carricato, University of Bologna DIEM – Department of Mechanical Engineering Italy

May

29

Computational fluid dynamics-based multiobjective optimization of a surface combatant using a global optimization method

May 29, 2008 | Comments Off

Abstract  The main objective of this article is to describe the development of two advanced multiobjective optimization methods based
on derivative-free techniques and complex computational fluid dynamics (CFD) analysis. Alternatives for the geometry and mesh
manipulation techniques are also described. Emphasis is on advanced strategies for the use of computer resource-intensive
CFD solvers in the optimization process: indeed, two up-to-date free surface-fitting Reynolds-averaged Navier-Stokes equation
solvers are used as analysis tools for the evaluation of the objective function and functional constraints. The two optimization
methods are realized and demonstrated on a real design problem: the optimization of the entire hull form of a surface combatant,
the David Taylor Model Basin—Model 5415. Realistic functional and geometrical constraints for preventing unfeasible results
and to get a final meaningful design are enforced and discussed. Finally, a recently proposed verification and validation
methodology is applied to assess uncertainties and errors in simulation-based optimization, based on the differences between
the numerically predicted improvement of the objective function and the actual improvement measured in a dedicated experimental
campaign. The optimized model demonstrates improved characteristics beyond the numerical and experimental uncertainty, confirming
the validity of the simulation-based design frameworks.

  • Content Type Journal Article
  • Category Original Article
  • DOI 10.1007/s00773-007-0264-7
  • Authors
    • Yusuke Tahara, Osaka Prefecture University Department of Marine System Engineering 1-1 Gakuen-cho Osaka 599-8531 Japan
    • Daniele Peri, INSEAN Italian Ship Model Basin Rome Italy
    • Emilio Fortunato Campana, INSEAN Italian Ship Model Basin Rome Italy
    • Frederick Stern, University of Iowa IIHR—Hydroscience and Engineering Iowa USA

May

29

YouTube and intergenerational communication: the case of Geriatric1927

May 29, 2008 | Comments Off

Abstract  This paper presents a case study of a 79 year old video blogger called ‘Geriatric1927’, and his use of the video sharing website,
YouTube. Analysis of his first eight video blogs, and the subsequent text responses, reveals opportunities of this medium
for intergenerational contact, reminiscence, reciprocal learning and co-creation of content, suggesting that older people
can be highly motivated to use computers for social contact. The paper concludes by noting the importance of technologies
that are socially engaging and meaningful for older people, and pointing to ways in which the social life of YouTube might
be better promoted on its interface.

  • Content Type Journal Article
  • Category Long paper
  • DOI 10.1007/s10209-008-0127-y
  • Authors
    • Dave Harley, University of Sussex Department of Informatics, Interact Lab Brighton BN1 9QH UK
    • Geraldine Fitzpatrick, University of Sussex Department of Informatics, Interact Lab Brighton BN1 9QH UK

May

28

Networking and Remoting

May 28, 2008 | Comments Off

The Microsoft .NET Framework includes a full set of classes for network programming. These classes support everything from
socket-based programming with Transmission Control Protocol/Internet Protocol (TCP/IP) to downloading files and HTML pages
from the Web over Hypertext Transfer Protocol (HTTP). Not only do these networking classes provide you with a rich set of
tried-and-tested tools to use in your own distributed applications, they are also the foundation on which two high-level distributed
programming models integral to the .NET Framework are built: remoting and web services.

  • Content Type Book Chapter
  • DOI 10.1007/978-1-4302-0604-0_11

May

28

A Refinement Framework for Cross Language Text Categorization

May 28, 2008 | Comments Off

Cross language text categorization is the task of exploiting labelled documents in a source language (e.g. English) to classify
documents in a target language (e.g. Chinese). In this paper, we focus on investigating the use of a bilingual lexicon for
cross language text categorization. To this end, we propose a novel refinement framework for cross language text categorization.
The framework consists of two stages. In the first stage, a cross language model transfer is proposed to generate initial
labels of documents in target language. In the second stage, expectation maximization algorithm based on naive Bayes model
is introduced to yield resulting labels of documents. Preliminary experimental results on collected corpora show that the
proposed framework is effective.

  • Content Type Book Chapter
  • DOI 10.1007/978-3-540-68636-1_39
  • Authors
    • Ke Wu, Shanghai Jiao Tong University Department of Computer Science and Engineering 800 Dong Chuan Road Shanghai 200240 China
    • Bao-Liang Lu, Shanghai Jiao Tong University Department of Computer Science and Engineering 800 Dong Chuan Road Shanghai 200240 China

May

28

Blog Post and Comment Extraction Using Information Quantity of Web Format

May 28, 2008 | Comments Off

With the development of the research on blogosphere, acquiring the post and comment from blog page becomes more important
in improving the search performance. In this paper, we present a two-stage method. First, we combine the advantage of the
vision information and the effective text information to locate the main text which represents the theme of blog page. Second, we use the information quantity of separator to detect the boundary between the post and comment. According to our experiments, this method achieves a good performance
in extraction and improves the performance of blog search.

  • Content Type Book Chapter
  • DOI 10.1007/978-3-540-68636-1_29
  • Authors
    • Donglin Cao, Chinese Academy of Sciences Institute of Computing Technology Beijing 100080
    • Xiangwen Liao, Chinese Academy of Sciences Institute of Computing Technology Beijing 100080
    • Hongbo Xu, Chinese Academy of Sciences Institute of Computing Technology Beijing 100080
    • Shuo Bai, Chinese Academy of Sciences Institute of Computing Technology Beijing 100080

May

28

Comparison of Alternative Channels in Cross Media Publishing

May 28, 2008 | Comments Off

Abstract  This paper attempts a direct comparison of the available alternative channels that can be employed in a cross media publishing
scheme. More precisely it examines the content, the publishing speed, and the rhythm of the publishing channels. Interesting
conclusions are drawn concerning the characteristics of each channel. A new publishing channel is proposed in order to allow
newspapers to directly compete with radio and TV channels.

  • Content Type Journal Article
  • Category Original Paper
  • DOI 10.1007/s12109-008-9067-x
  • Authors
    • Andreas Veglis, Aristotle University of Thessaloniki Media Informatics Laboratory, Department of Journalism and Mass Communication Thessaloniki Greece
keep looking »