bluuebunny/crossref_metadata_2025_split huggingface dataset:
Interactions between intelligent multimodal terminals and a network management system in a B3G context
Authors: Skianis C. , Kormentzas G. , Kontovasilis K. 
Published: August 2005

AbstractThis work addresses aspects relevant to the optimal joint exploitation of heterogeneous wireless networks in an ‘all‐IP’ integrated infrastructure, frequently called ‘Beyond 3G Systems’ (B3G) or composite radio networks. After briefly reviewing general architectural aspects pertaining to such systems, the paper focuses to the management functionality possessed by B3G systems and highlights the benefits that stem from sharing intelligence among the hybrid network (through a network management system) and the multimodal wireless terminals. In particular, the paper discusses an appropriate signaling protocol for the exchange of information between management modules at the network and the wireless terminal, investigates associated performance aspects and correlates the relevant findings with measurement results obtained from experiments over a prototype B3G network testbed. Copyright © 2005 John Wiley & Sons, Ltd.
Integration of authentication and mobility management in third generation and WLAN data networks
Authors: Wang Wenye , Liang Wei , Agarwal Avesh K. 
Published: August 2005

AbstractThe successful deployment of wireless local area networks (WLAN) for high speed data transmission and cellular systems for wide coverage and global roaming has emerged to be a complementary platform for wireless data communications. In order to fully exploit potentials in 3G/WLAN integration, authentication of roaming users crossing different networks, must be coupled with mobility management, which is a challenging, yet not resolved issue. The focus of this paper is on state‐of‐art solutions to Wi‐Fi and cellular networks based on IP infrastructure. Moreover, we introduce a new authentication architecture for fast authentication during inter‐networking handoff and large‐scale heterogeneous networks. We show that the new architecture can reduce authentication latency significantly and be adaptive to user mobility and traffic. Copyright © 2005 John Wiley & Sons, Ltd.
Adaptive bandwidth provisioning in an integrated 3G and WLAN environment
Authors: Choi Yong‐Hoon , Park Jaesung , Kim Beomjoon 
Published: August 2005

AbstractIn this paper, we propose a practical bandwidth reprovisioning scheme in an integrated third generation (3G) andwireless local area network(WLAN) environment. We investigate how to increase available bandwidth for conversational class while keeping the packet loss probability of background class below a threshold. The proposed scheme is implemented as a simple network management protocol (SNMP) compliant management information base (MIB) and deployed atpacket data serving node(PDSN) equipment. The experiments conducted on1x evolution for data and voice(1xEV‐DV) testbed show that the proposed scheme increases the bandwidth of the conversational class and guarantee adequate service quality of the background class. Copyright © 2005 John Wiley & Sons, Ltd.
The Gβ(KlSte4p) subunit of the heterotrimeric G protein has a positive and essential role in the induction of mating in the yeast Kluyveromyces lactis
Authors: Kawasaki Laura , Saviñón‐Tejeda Alma L. , Ongay‐Larios Laura , Ramírez Jorge , Coria Roberto 
Published: August 2005

AbstractIn the yeast Saccharomyces cerevisiae the Gβγ dimer of the heterotrimeric G protein transduces a pheromone signal from serpentine receptor to a MAP kinase cascade that activates the mating response pathway. Haploid cells lacking the Gβ subunit do not respond to sexual pheromone, leading to sterility. In this work we demonstrate that the β‐subunit of Kluyveromyces lactis, encoded by the KlSTE4 gene, is a component of the G protein, and that its disruption gives rise to sterile cells. However, unlike Ste4p in S. cerevisiae, its overexpression does not induce growth arrest or promote mating. It has been shown that in K. lactis, the Gα subunit has a positive role in the mating process, hence the resulting double GαΔ GβΔ mutant was viable and sterile. Here we show that the overproduction of Gβ subunit fails to rescue GαΔ mutant from sterility and that expression of a constitutive active allele of Gα enhances transcription of the KlSTE4 gene. The mating pathway triggered by the Gβ‐subunit requires a functional KlSte12p transcription factor. Gβ has a 10‐fold higher association rate with the Gα1 subunit involved in pheromone response than with Gα2, the protein involved in cAMP regulation in K. lactis. Additionally, the Gβ‐subunit from K. lactis is able to interact with the Gα‐subunit from S. cerevisiae but fails to restore the mating deficiency of Scste4Δ mutant. The data presented indicate that the mating pathway of K. lactis is positively and cooperatively regulated by both the Gα and the Gβ subunits. Copyright © 2005 John Wiley & Sons, Ltd.
The Saccharomyces cerevisiae ESU1 gene, which is responsible for enhancement of termination suppression, corresponds to the 3′‐terminal half of GAL11
Authors: Ono Bun‐ichiro , Futase Tetsuro , Honda Waka , Yoshida Ryohma , Nakano Kiyohiro , Yamamoto Takayuki , Nakajima Erina , Noskov Vladimir N. , Negishi Kazuo , Chen Buxin , Chernoff Yury O. 
Published: August 2005

AbstractA DNA fragment enhancing efficiency of [PSI+]‐dependent termination suppressor, sup111, was isolated from a genomic library of Saccharomyces cerevisiae and its function was attributed to an ORF of 1272 bp. This ORF, designated ESU1 (enhancer of termination suppression), corresponded to the 3′‐terminal portion of GAL11. Contrasting to ESU1, GAL11 lowered the suppression efficiency of [PSI+] sup111. ESU1 possesses a TATA‐like sequence of its own and three ATG codons following it within a distance of about 70 bp and all in the same reading frame as GAL11. A 52.7 kDa protein corresponding in size to the predicted Esu1 protein is detected by western blot analysis using anti‐Gal11 antiserum. We therefore conclude that ESU1 is the gene that encodes a polypeptide corresponding to the C‐terminal 424 amino acids of Gal11. It was further found that ESU1 increases the level of GAL11 mRNA and probably also of its own mRNA. Moreover, ESU1 increased the cellular level of mRNA transcribed from the leu2‐1UAA mutant gene, while GAL11 did not. Based on these findings, we propose the following scheme for the events taking place in the [PSI+] sup111 cell that is transformed with an ESU1‐bearing plasmid: (a) ESU1 stimulates transcription of leu2‐1; (b) leu2‐1 mRNA is not effectively degraded because of the possession of sup111, which belongs to the upf group; (c) [PSI+] causes increased mis‐termination due to depletion of eRF3; (d) functional Leu2 product is made using leu2‐1 mRNA; and (d) suppression of leu2‐1 is eventually accomplished. Copyright © 2005 John Wiley & Sons, Ltd.
Paclitaxel‐induced microtubule stabilization causes mitotic block and apoptotic‐like cell death in a paclitaxel‐sensitive strain of Saccharomyces cerevisiae
Authors: Foland Travis B. , Dentler William L. , Suprenant Kathy A. , Gupta Mohan L. , Himes Richard H. 
Published: August 2005

AbstractWild‐type Saccharomyces cerevisiae tubulin does not bind the anti‐mitotic microtubule stabilizing agent paclitaxel. Previously, we introduced mutations into the S. cerevisiae gene for β‐tubulin that imparted paclitaxel binding to the protein, but the mutant strain was not sensitive to paclitaxel and other microtubule‐stabilizing agents, due to the multiple ABC transporters in the membranes of budding yeast. Here, we introduced the mutated β‐tubulin gene into a S. cerevisiae strain with diminished transporter activity and developed the first paclitaxel‐sensitive budding yeast strain. In the presence of paclitaxel, cytoplasmic microtubules were stable to cold depolymerization. Paclitaxel‐treated cells showed evidence of a mitotic block, with an increase in large‐budded cells and cells with a 2N DNA content and DNA fragmentation, identified by FACS analysis and the TUNEL assay. In the presence of paclitaxel, the number of dead cells in cultures increased three‐fold and cells containing reactive oxygen species were present. We conclude that paclitaxel blocks mitosis in this strain, leading to an apoptotic‐like cell death. This strain will also be useful in further studies of the effect of microtubule dynamics on various cellular processes in S. cerevisiae. Copyright © 2005 John Wiley & Sons, Ltd.
Tyl6, a novel Ty3/gypsy‐like retrotransposon in the genome of the dimorphic fungus Yarrowia lipolytica
Authors: Kovalchuk Andriy , Senam Senam , Mauersberger Stephan , Barth Gerold 
Published: August 2005

AbstractThe novel LTR retrotransposon Tyl6 was detected in the genome of the dimorphic fungus Yarrowia lipolytica. Sequence analysis revealed that this element is related to the well‐known Ty3 element of Saccharomyces cerevisiae and, especially, to the recently described Tse3 retrotransposon of Saccharomyces exiguus and to the del1‐like plant retrotransposons. Tyl6 is 5108 bp long, is flanked by two identical long terminal repeats (LTR), each of 276 bp, and its ORFs are separated by a −1 frameshift. Both ORFs are intact and deduced translation products display a significant similarity with those of previously described Ty3/gypsy retrotransposons. Distribution of Tyl6 among Y. lipolytica strains of different origins was also analysed. A single copy of the novel retrotransposon is present in some commonly used laboratory strains, which are derivatives of the wild‐type isolate YB423‐12, whereas other strains of independent origin are devoid of Ty16. No solo LTR of Tyl6 was detected in the analysed strains. The complete sequence of Tyl6 was submitted to the EMBL nucleotide sequence database under Accession No. AJ746250. Copyright © 2005 John Wiley & Sons, Ltd.
Development and Testing of the Dutch Heart Failure Knowledge Scale
Authors: van der Wal Martje H.L. , Jaarsma Tiny , Moser Debra K. , van Veldhuisen Dirk J. 
Published: August 2005

Background: Heart failure (HF) knowledge as well as compliance are considered to be underlying mechanisms of the effects of HF management programs. However, there are no valid and reliable measurement instruments available which measures knowledge of HF patients. Aim: To develop a reliable and valid instrument, which measures the knowledge, patients have on their disease and the HF-related health care regimen. Methods: The HF knowledge scale was developed in 3 phases; (1) concept analysis and first construction, (2) revision of items and (3) testing for validity and reliability. Results: The Dutch HF knowledge scale is a 15-item, self-administered questionnaire that covers items concerning HF knowledge in general, knowledge on HF treatment (including diet and fluid restriction) and HF symptoms and symptom recognition. Face validity as well as content and construct validity was tested in HF patients in 19 hospitals in the Netherlands. The scale was able to differentiate between HF patients with high and low level of HF knowledge. Cronbach's α of the knowledge scale in this population ( n = 902) was .62. Conclusion: The instrument is a valid and reliable scale that can be used in research to gain insight in the effect of education and counselling of HF patients. After additional testing, the instrument seems to be a valid and reliable scale to be used in clinical practice to measure HF knowledge.
Amniotic fluid index measurements in normal pregnancy after 28 gestational weeks
Authors: Hinh N.D. , Ladinsky J.L. 
Published: August 2005

AbstractObjective: The purpose of this study is to establish a normative scale of amniotic fluid index (AFI) or four‐quadrant amniotic fluid index throughout gestation in uncomplicated singleton pregnancies, and to identify the lower and upper limits for each gestational week. Method: A prospective longitudinal study was used. One hundred seventeen uncomplicated singleton pregnancies were examined every 4 weeks between 28 and 42 week's gestation. The uterine cavity was divided into four quadrants. With the use of linear‐array, real‐time B‐scanning, the vertical diameter of the largest pocket in each quadrant was measured. The amniotic fluid index is the sum of these four quadrants. Results: The amniotic fluid index observations from regression equation curve were stratified in week‐specific normative curves. The variation between mean AFI of the total population and the means of the preterm was significantly greater than term pregnancies (P < .05). The AFI 2.5%, 5%, 10%, 90% 95% and 97.5% limits about the 50th (124 mm) were 68, 81, 90, 135, 144 and 145 mm, respectively, in term gestation. The 5th and 95th percentile serves as lower and upper limits of normal, respectively for 28–42 weeks gestation. Conclusions: Gestational age‐specific values of AFI were established, determining the significant trends of changes in the amniotic fluid volume with gestation. The normogram may have a clinical benefit to accurate, reliable and semiquantitative diagnosis of oligohydramnios and polyhydramnios.
New Government, New Language? The Third Way Discourse in Taiwan
Authors: LEE YU-KANG 
Published: August 2005

The Third Way started as an Anglo-American ideological and political venture. It was soon followed by major European leaders, among other worldwide government heads of state, who sought to emulate the result of a high command of electoral support and a resolution to the consequences of globalisation. Despite criticism by academics and commentators for having lack of content and substance, the Third Way appeared to be rather successful in recruiting allies, especially among Western democracies. Unlike other nations in East Asia, Taiwan is involved with this arguably prominent political project of the 21st century.The New Middle Way is not only the political idea that seemingly pushed Chen Shui-bian into office, but also appears to be the ideological foundation of his governance. This paper focuses on the political language of Chen in order to analyse and comprehend the implications of the New Taiwan Middle Way. One way to understand Chen's New Middle Way is to look into the language of the DPP, particularly of Chen. To get behind the rhetoric and decode the factual meanings of the discourse, a wide range of political speeches and texts are examined. By examining the New Taiwan Middle Way, we not only gain a different perspective on Chen's bid for the presidency, but also capture valuable insights into his governing approach.The paper argues that the effect of the New Taiwan Middle Way before the presidential election was to achieve the political objective of Chen Shui-bian. Though the DPP did not hold the majority of the seats in the Legislative Yuan prior to the December 2001 election, the New Middle Way may have served as symbolic means to an end to resolve the deadlock within the legislature. In these ways, the significance of the New Middle Way for Taiwan is to be concluded.
A meta-analysis of negative symptoms in dual diagnosis schizophrenia
Authors: POTVIN STÉPHANE , SEPEHRY AMIR ALI , STIP EMMANUEL 
Published: August 2005

Background. According to the self-medication hypothesis, schizophrenia patients would abuse psychoactive substances to get a relief from their negative symptoms. Studies testing the self-medication hypothesis in dual diagnosis (DD) schizophrenia have not been conclusive, with some studies showing that DD patients experience fewer negative symptoms, whereas other studies have failed to detect such differences. One potential confounding factor for this discrepancy lies in the diverse scales used to evaluate the negative symptoms. A systematic quantitative review of the literature using computerized search engines has been undertaken.Method. Studies were retained in the analysis if: (i) they assessed negative symptoms using the SANS; (ii) groups of schizophrenia patients were divided according to substance use disorders (alcohol, amphetamines, cannabis, cocaine, hallucinogens, heroin and phencyclidine).Results. Attainable published studies were screened. According to our inclusion criteria, 18 possible studies emerged. Data from 11 studies were available for mathematical analysis. A moderate effect size (total n=1135, 451 DD, 684 single diagnosis, adjusted Hedges' g=–0·470, p=0·00001) was obtained, within a random-effect model, suggesting that DD patients experience fewer negative symptoms. Groups did not differ in age, sex, and positive/general psychopathology.Conclusions. Using narrow criteria (e.g. SANS), the results of this meta-analysis show that schizophrenia patients with a substance use disorder experience fewer negative symptoms than abstinent schizophrenia patients. As such, these results suggest either that substance abuse relieves the negative symptoms of schizophrenia or that the patients with fewer negative symptoms would be more prone to substance use disorders.
Pulsars and Gravitational Wave Detection
Authors: Hobbs George 
Published: August 2005

AbstractThe number of known millisecond pulsars has dramatically increased in the last few years. Regular observations of these pulsars may allow gravitational waves with frequencies ∼10−9 Hz to be detected. A ‘pulsar timing array’ is therefore complimentary to other searches for gravitational waves using ground-based or space-based interferometers that are sensitive to much higher frequencies. In this review we describe (1) the basic methods for using an array of pulsars as a gravitational wave detector, (2) the sources of the potentially detectable waves, (3) current limits on individual sources and a stochastic background, and (4) the new project recently started using the Parkes radio telescope.
Science Programs for a 2-m Class Telescope at Dome C, Antarctica: PILOT, the Pathfinder for an International Large Optical Telescope
Authors: Burton M. G. , Lawrence J. S. , Ashley M. C. B. , Bailey J. A. , Blake C. , Bedding T. R. , Bland-Hawthorn J. , Bond I. A. , Glazebrook K. , Hidas M. G. , Lewis G. , Longmore S. N. , Maddison S. T. , Mattila S. , Minier V. , Ryder S. D. , Sharp R. , Smith C. H. , Storey J. W. V. , Tinney C. G. , Tuthill P. , Walsh A. J. , Walsh W. , Whiting M. , Wong T. , Woods D. , Yock P. C. M. 
Published: August 2005

AbstractThe cold, dry, and stable air above the summits of the Antarctic plateau provides the best ground-based observing conditions from optical to sub-millimetre wavelengths to be found on the Earth. Pathfinder for an International Large Optical Telescope (PILOT) is a proposed 2 m telescope, to be built at Dome C in Antarctica, able to exploit these conditions for conducting astronomy at optical and infrared wavelengths. While PILOT is intended as a pathfinder towards the construction of future grand-design facilities, it will also be able to undertake a range of fundamental science investigations in its own right. This paper provides the performance specifications for PILOT, including its instrumentation. It then describes the kinds of projects that it could best conduct. These range from planetary science to the search for other solar systems, from star formation within the Galaxy to the star formation history of the Universe, and from gravitational lensing caused by exo-planets to that produced by the cosmic web of dark matter. PILOT would be particularly powerful for wide-field imaging at infrared wavelengths, achieving near diffraction-limited performance with simple tip–tilt wavefront correction. PILOT would also be capable of near diffraction-limited performance in the optical wavebands, as well be able to open new wavebands for regular ground-based observation, in the mid-IR from 17 to 40 μm and in the sub-millimetre at 200 μm.
Tidal Tails and the Shape of the Dark Matter Halo
Authors: Lewis Geraint F. , Ibata Rodrigo A. 
Published: August 2005

AbstractCold dark matter cosmologies successfully accounts for the distribution of matter on large scales. On smaller scales, these cosmological models predict that galaxies like our own Milky Way should be enveloped in massive dark matter halos. Furthermore, these halos should be significantly flattened or even triaxial. Recent observational evidence, drawn from the demise of the Sagittarius dwarf galaxy as it is cannibalized by our own, indicates that the potential of the Milky Way must be close to spherical. While the precise interpretation of the observational evidence is under debate, an apparently spherical halo may signify a pronounced failing of dark matter models, and may even indicate a failure in our fundamental understanding of gravity.
Recurrent ∼24 h Periods in RXTE ASM Data
Authors: Farrell Sean A. , O'Neill Paul M. , Sood Ravi K. 
Published: August 2005

AbstractAnalysis of data from the Rossi X-ray Timing Explorer satellite's All Sky Monitor (ASM) instrument for several X-ray binary sources has identified a recurrent ∼24 h period. This period is sometimes highly significant, giving rise to the possibility of it being identified as an orbital or super-orbital period. Further analysis has revealed the same period in a number of other X-ray sources. As a result this period has been discounted as spurious, described variously as arising from daily variations in background levels, the scheduling of ASM observations and beating between the sampling period and long-term secular trends in the light curves. We present here an analysis of the spurious periods and show that the dominant mechanism is in fact spectral leakage of low-frequency power present in the light curves.
A Damped Lyα Absorption-Line System in an Apparent Void at Redshift 2.38
Authors: Godfrey Leith E. H. , Francis Paul J. 
Published: August 2005

AbstractWe study the contents of an apparent void in the distribution of Lyα emitting galaxies at redshift 2.38. We show that this void is not empty, but contains a damped Lyα absorption-line system, seen in absorption against background QSO 2138-4427. Imaging does not reveal any galaxy associated with this absorption-line system, but it contains metals (Fe/H ∼ −1.3), and its large velocity range (∼180 km s−1) implies a significant mass.
Intra-Pixel Sensitivity Variation and Charge Transfer Inefficiency — Results of CCD Scans
Authors: Toyozumi Hiroyuki , Ashley Michael C. B. 
Published: August 2005

AbstractThe efficiency with which a charge-coupled device (CCD) detects photons depends, amongst other factors, on where within a pixel the photon hits. To explore this effect we have made detailed scans across a pixel for a front-illuminated three-phase EEV05-20 CCD using the standard astronomical B, V, R, and I colour filters. Pixel response functions and photometric sensitivity maps are derived from the scan images. Nonlinear charge transfer inefficiency (CTI) effects were observed and corrected for. The resulting images clearly show the intra-pixel sensitivity variations (IPSVs) due to the CCD electrode structure, and its dependence on wavelength. We briefly comment on the implications of IPSVs and CTI for high-precision photometry and astrometry.