bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cluster‐structured particle swarm optimization with interaction and adaptation
Authors: Yazawa Kazuyuki , Tamura Kenichi , Yasuda Keiichiro , Motoki Makoto , Ishigame Atsushi 
Published: October 2011

AbstractParticle swarm optimization (PSO) is one of the most powerful methods for solving unconstrained and constrained global optimization problems. A cluster‐structured PSO with interaction and adaptation is proposed in this paper, and the cluster structure, interaction, and adaptation of the proposed PSO are analyzed by numerical simulations. The feasibility and advantages of the proposed cluster‐structured PSO are demonstrated by numerical simulations using some typical global optimization test problems. © 2011 Wiley Periodicals, Inc. Electron Comm Jpn, 94(11): 9–17, 2011; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/ecj.10379
Noninverted buck–boost converters with dual delta sigma modulators
Authors: Kobori Yasunori , Kono Masashi , Shimizu Toshihiko , Kobayashi Haruo 
Published: October 2011

AbstractThis paper presents a new control circuit to create a high‐performance noninverted buck–boost converter with dual ΔΣ modulations. Experimental load regulation, corresponding to load current steps of ±0.5 A, is within 45 mVpp, and the efficiency without a synchronized rectifier is 83% at an input voltage of 2.5 V and a load current of 0.8 A. © 2011 Wiley Periodicals, Inc. Electr Eng Jpn, 178(2): 21–28, 2012; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.21115
Method for bandwidth compression and transmission of environmental information in bilateral teleoperation
Authors: Kubo Ryogo , Ohnishi Kouhei 
Published: October 2011

AbstractIn this paper, a novel method for bandwidth compression and transmission of environmental information is proposed for bilateral teleoperation systems with multiple degrees of freedom (MDOF). In this method, environmental information, that is, the position of end‐effectors and the reaction force exerted on them, is converted into environmental modes by using discrete Fourier transform (DFT) matrices. The environmental modes to be transmitted are then selected on the basis of the communication bandwidth between master and slave robots. Bilateral control is achieved in low‐frequency modal spaces, and local position control is achieved in high‐frequency modal spaces. The validity of the proposed method is confirmed by performing an experiment. © 2011 Wiley Periodicals, Inc. Electr Eng Jpn, 178(2): 47–54, 2012; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.21206
Numerical study of a full‐scale six‐story reinforced concrete wall‐frame structure tested at E‐Defense
Authors: Kim Yousok , Kabeyasawa Toshimi , Matsumori Taizo , Kabeyasawa Toshikazu 
Published: October 2011

SUMMARYA full‐scale shake table test on a six‐story reinforced concrete wall frame structure was carried out at E‐Defense, the world's largest three‐dimensional earthquake simulation facility, in January 2006. Story collapse induced from shear failure of shear critical members (e.g., short columns and shear walls) was successfully produced in the test. Insights gained into the seismic behavior of a full‐scale specimen subjected to severe earthquake loads are presented in this paper. To reproduce the collapse process of the specimen and evaluate the ability of analytical tools to predict post‐peak behavior, numerical simulation was also conducted, modeling the seismic behavior of each member with different kinds of models, which differ primarily in their ability to simulate strength decay. Simulated results showed good agreement with the strength‐degrading features observed in post‐peak regions where shear failure of members and concentrated deformation occurred in the first story. The simulated results tended to underestimate observed values such as maximum base shear and maximum displacement. The effects of member model characteristics, torsional response, and earthquake load dimensions (i.e., three‐dimensional effects) on the collapse process of the specimen were also investigated through comprehensive dynamic analyses, which highlighted the following seismic characteristics of the full‐scale specimen: (i) a model that is incapable of simulating a specimen's strength deterioration is inadequate to simulate the post‐peak behavior of the specimen; (ii) the torsional response generated from uniaxial eccentricity in the longitudinal direction was more significant in the elastic range than in the inelastic range; and (iii) three‐dimensional earthquake loads (X–Y–Z axes) generated larger maximum displacement than any other loading cases such as two‐dimensional (X–Y or Y–Z axes) or one‐dimensional (Y axis only) excitation. Copyright © 2011 John Wiley & Sons, Ltd.
Bedload tracing in a high‐sediment‐load mountain stream
Authors: Liébault Frédéric , Bellot Hervé , Chapuis Margot , Klotz Sébastien , Deschâtres Michaël 
Published: October 2011

ABSTRACTThis paper reports a radiofrequency identification (RFID) tracing experiment implemented in a high‐sediment‐load mountain stream typical of alpine gravel‐bed torrents. The study site is the Bouinenc Torrent, a tributary to the Bléone River in southeast France that drains a 38·9‐km² degraded catchment. In spring 2008, we deployed 451 tracers with b‐axis ranging from 23 to 520 mm. Tracers were seeded along eight cross‐sections located in the upstream part of the lowest 2·3 km of the stream. Three tracer inventories were implemented in July 2008, 2009 and 2010. Recovery rates calculated for mobile tracers declined from 78% in 2008 to 45% in 2009 and 25% in 2010. Observations of tracer displacement revealed very high sediment dispersion, with frontrunners having travelled more than 2 km only three months after their deployment. The declining recovery rate over time was interpreted as resulting from rapid dispersion rather than deep burial. We evaluated that 64% of the tracers deployed in the active channel were exported from the 2·3‐km study reach three years after the onset of the tracing experiment. Travel distances were characterized by right‐skewed and heavy‐tailed distributions, correctly fitted by a power‐law function. This supports the idea that in gravel‐bed rivers with abundant sediment supply relative to transport capacity, bedload transport can be viewed as a superdiffusive sediment dispersion process. It is also shown that tracers initially deployed in the low‐flow channel were characterized by a 15‐ to 30‐fold increase of mobility compared to tracers deployed in gravel bars. Copyright © 2011 John Wiley & Sons, Ltd.
Historic range of variability in geomorphic processes as a context for restoration: Rocky Mountain National Park, Colorado, USA
Authors: Rubin Zan , Rathburn Sara L. , Wohl Ellen , Harry Dennis L. 
Published: October 2011

ABSTRACTEvaluation of historic range of variability (HRV) is an effective tool for determining baseline conditions and providing context to researchers and land managers seeking to understand and enhance ecological function. Incorporating HRV into restoration planning acknowledges the dynamic quality of landscapes by allowing variability and disturbance at reasonable levels and permitting riverine landscapes to adapt to the physical processes of their watersheds. HRV analysis therefore represents a practical (though under‐utilized) method for quantifying process‐based restoration goals. We investigated HRV of aggradational processes in the subalpine Lulu City wetland in Rocky Mountain National Park to understand the impacts of two centuries of altered land use and to guide restoration planning following a human‐caused debris flow in 2003 that deposited up to 1 m of sand and gravel in the wetland. Historic aerial photograph interpretation, ground penetrating radar surveys, and trenching, coring, and radiocarbon dating of valley‐bottom sediments were used to map sediment deposits, quantify aggradation rates, and identify processes (in‐channel and overbank fluvial deposition, direct hillslope input, beaver pond filling, peat accumulation) creating alluvial fill within the wetland. Results indicate (i) the Lulu City wetland has been aggrading for several millennia, (ii) the aggradation rate of the past one to two centuries is approximately six times higher than long‐term pre‐settlement averages, (iii) during geomorphically active periods, short‐term aggradation rates during the pre‐settlement period were probably much higher than the long‐term average rate, and (iv) the processes of aggradation during the last two centuries are the same as historic processes of aggradation. Understanding the HRV of aggradation rates and processes can constrain management and restoration scenarios by quantifying the range of disturbance from which a landscape can recover without active restoration. Copyright © 2011 John Wiley & Sons, Ltd.
Toxicity of copper oxide nanoparticle suspensions to aquatic biota
Authors: Manusadžianas Levonas , Caillet Celine , Fachetti Louis , Gylytė Brigita , Grigutytė Reda , Jurkonienė Sigita , Karitonas Rolandas , Sadauskas Kazys , Thomas Fabien , Vitkus Rimantas , Férard Jean-François 
Published: October 2011

Abstract
Toxicity effects induced by nanosuspensions of CuO (&lt;50 nm; Sigma-Aldrich) on macrophytic algae cells of Nitellopsis obtusa (96-h median lethal concentration [LC50]), microphytic algae Chlorella (30-min median inhibitory concentration [IC50]), shrimp Thamnocephalus platyurus (24-h LC50), and rotifer Brachionus calyciflorus (24-h LC50) were investigated. No substantial differences between the effects of nonsonicated and sonicated nCuO suspensions were observed. The particle size distribution analysis accomplished by the laser diffraction technique at suspension concentration from 3 to 100 mg/L revealed rapid (within 5 min) reagglomeration of the particles after the sonication. The observed adverse effects on N. obtusa cells may be attributed to nanoparticles per se, but not to ionic Cu, because neither chemical analysis nor biological testing (algae survival in the supernatants of suspensions) confirmed the presence of cupric ions in toxic amounts. Contrary to ionic Cu form, nCuO delayed the initial phase of N. obtusa cell membrane depolarization. Lethality tests with rewash demonstrated that the least used 5-min exposure in 100 mg/L nCuO sonicated suspension induced 70% mortality in charophyte cells after 8 d, whereas the rewash after a short exposure to a noticeably toxic concentration of Cu2+ prevented cell mortality. The obtained data suggested the possible influence of a thick charophyte cell wall on the dynamics of nanotoxicity effects. Environ. Toxicol. Chem. 2012;31:108–114. © 2011 SETAC
Developing Elements of User Experience for Mobile Phones and Services: Survey, Interview, and Observation Approaches
Authors: Park Jaehyun , Han Sung H. , Kim Hyun K. , Cho Youngseok , Park Wonkyu 
Published: October 2011

AbstractThe term user experience (UX) encompasses the concepts of usability and affective engineering. However, UX has not been defined clearly. In this study, a literature survey, user interview and indirect observation were conducted to develop definitions of UX and its elements. A literature survey investigated 127 articles that were considered to be helpful to define the concept of UX. An in‐depth interview targeted 14 hands‐on workers in the Korean mobile phone industry. An indirect observation captured daily experiences of eight end‐users with mobile phones. This study collected various views on UX from academia, industry, and end‐users using these three approaches. As a result, this article proposes definitions of UX and its elements: usability, affect, and user value. These results are expected to help design products or services with greater levels of UX. © 2011 Wiley Periodicals, Inc.This article was published online on 20 October 2011. An error was subsequently identified. This notice is included in the online and print versions to indicate that both have been corrected 13 June 2013.
Developing an integrated display of health data for aging in place
Authors: Gong Yang , Chandra Arpita 
Published: October 2011

AbstractThe goal of aging in place is to allow seniors to remain in the environment of their choice with supportive services as needed, living independently in old age. TigerPlace, a retirement community of residents assisting aging in place, has been equipped with different types of sensors with the potential of monitoring, identifying, and predicting deteriorating health conditions. Currently, the seniors' medical records and telemedicine data are stored in separate systems. Date‐ and time‐stamped sensor data are stored in SQL databases and are not linked with the senior's personal health records. The systems related to health care data and daily activities are separately stored and do not communicate with each other. Using a human‐centered design and evaluation framework, we conducted user, task, function, and representation analyses, which provide an in‐depth description of user characteristics, preferences, systems functionality, basic tasks, and effective representations in such an information‐distributed setting. In this article, we report our investigation of such an aging in place setting and present our preliminary results of analyses on design requirements and a couple of human‐centered prototypes aiming at an integrated health data display. The project was proposed to design a holistic and comprehensive view of senior residents' health data that are currently available in disparate systems. The integrated health data display must be human‐centered and should inform senior residents and health care providers in a timely manner to support decision making. This design demonstrates our effort to prototype a human‐centered user interface for enhancing aging in place. © 2011 Wiley Periodicals, Inc.
Evolution of hydrological and carbon cycles under a changing climate
Authors: Mu Qiaozhen , Zhao Maosheng , Running Steven W. 
Published: October 2011

AbstractHydrological and carbon cycles are inherently coupled and play a pivotal role in the earth system. Water stress is one of the most limiting factors constraining vegetation productivity in both direct and indirect ways (mainly through nutrition cycling). In this article, we first reviewed the concepts of hydrological and carbon cycles and their interactions and then summarized recent advances in our understanding of how global climate change affects water stress, ecosystem carbon cycling, disturbances, and water use efficiency. A warming climate may continue to benefit plant growth in energy limited areas such as high latitudes and altitudes. However, over many water‐limited regions of the world, a warming climate has led to a drying trend, posing negative effects on land carbon sink capability, as shown by reductions in vegetation growth and increases in ecosystem disturbances (wildfires, insect outbreaks, and tree mortality). Carbon cycle and water use efficiency have responded to climate change in different ways in different areas. Further integrating information from climate records, flux measurements at eddy flux towers, and observations from satellites will greatly advance our understanding of the hydrological and carbon cycles and their evolution. Advancement in our understanding of the evolution of hydrological and carbon cycles under the changing climate will help us to adapt and mitigate the adverse effects of climate change. Copyright © 2011 John Wiley & Sons, Ltd.
THE INFLUENCE OF IMPROVEMENT PROCEDURES AND A TILE DRAINAGE SYSTEM ON SOIL PHYSICAL PROPERTIES IN A NORTH‐EAST ROMANIAN EXPERIMENTAL SITE
Authors: Bucur Daniel , Moca Valeriu 
Published: October 2011

ABSTRACTThis study was carried out to investigate an albic stagnic‐glossic Luvosol during three distinct experimental cycles conducted in 1978–1986, 1987–1996 and 1997–2008 to identify changes in properties of the drained soil in response to amendments.After execution of the land shaping in the bedding system the topsoil thickness increased on the ridges when compared to the furrows, resulting in a higher active physiological depth in comparison to the unimproved soil. Additionally, mixing of the material from the upper horizons occurred because of the deep loosening and cultivation of the drained soil, especially at 0–30 cm. The upper part of the drained soil profile showed a redistribution of the clay content, which increased by an average of 4% in the 0–20 cm horizon when compared to the unimproved soil. Cultivation resulted in intensification of the mineralization process of the humic substances in the drained soil. As a result, the humus content was reduced by 4–5% in the 0–20 cm horizon.The evolution of the main physical features of the soil under the long‐term influence of the tile drainage and improved cultivation methods revealed an increase in the drained porosity and a reduction of the compaction degree at 0–30 cm. These changes primarily occurred after the first experimental cycle, while the soil physical state remained relatively stable in the following experimental cycles. Copyright © 2011 John Wiley & Sons, Ltd.
Regulation mechanisms underlying the biosynthesis of daptomycin and related lipopeptides
Authors: liao Guojian , Shi Tinyu , Xie Jianping 
Published: October 2011

AbstractDaptomycin is a lipopeptide antibiotics used to treat Gram‐positive pathogens infections, including drug‐resistant strains. In‐depth exploration of its biosynthesis and regulation is crucial for metabolic engineering improvement of this ever‐increasing important antibiotic. The past years have witnessed the significant progresses in the understanding of the molecular mechanisms underlying the biosynthesis and regulation of daptomycin. This information was updated in our review, with special focus on the regulatory network integrating a wide variety of physiological and environmental inputs. This should provide novel insight into the regulatory mechanism of biosynthesis of daptomycin and nodes for strain improvement to increase the yields of daptomycin. J. Cell. Biochem. 113: 735–741, 2012. © 2011 Wiley Periodicals, Inc.
Regulation of asthmatic airway relaxation by estrogen and heat shock protein 90
Authors: Intapad S. , Dimitropoulou C. , Snead C. , Piyachaturawat P. , Catravas J.D. 
Published: October 2011

AbstractWe tested the hypothesis that asthmatic mouse airways exhibit impaired relaxation to NO donors. Mouse tracheal rings were incubated overnight in serum from asthmatic human subjects or from nonasthmatic controls. The next day, cumulative concentration‐response curves (CCRC) to sodium nitroprusside (SNP) and nitroglycerine (NTG) were obtained. Both SNP and NTG relaxed the pre‐constricted normal tracheal rings. Tracheal rings exposed to serum from asthmatic patients exhibited a more than a threefold increase in the EC50 of SNP and NTG. Pre‐incubation of tracheal rings with heat shock protein 90 inhibitors decreased the relaxation of both normal and asthmatic tracheal rings to SNP and NTG. Pre‐incubation with estradiol did not affect normal tracheal ring relaxation but exhibited an increase in asthmatic tracheal ring relaxation, which was abolished by an estrogen receptor (ER) antagonist. ER subtype‐selective agonists, but not GPR30 agonists, mimicked the action of estradiol on tracheal ring relaxation. Co‐incubation of rings with radicicol and estradiol produced an ER‐dependent increase in the relaxation response to SNP of both normal and asthmatic ASM. Estrogen‐induced relaxation of ASM was abolished by overnight incubation with radicicol and this was associated with reduced expression of ERβ. These data suggest that asthmatic ASM is considerably less responsive to NO‐donors and that both estrogen and hsp90 play important roles in ASM relaxation. J. Cell. Physiol. 227: 3036–3043, 2012. © 2011 Wiley Periodicals, Inc.
The phosphoinositide 3′‐kinase p110δ modulates contractile protein production and IL‐6 release in human airway smooth muscle
Authors: Ge Qi , Moir Lyn M. , Trian Thomas , Niimi Kyoko , Poniris Maree , Shepherd Peter R. , Black Judith L. , Oliver Brian G. , Burgess Janette K. 
Published: October 2011

AbstractTransforming growth factor (TGF) β1 increases pro‐inflammatory cytokines and contractile protein expression by human airway smooth muscle (ASM) cells, which could augment airway inflammation and hyperresponsiveness. Phosphoinositide 3′ kinase (PI3K) is one of the signaling pathways implicated in TGFβ1 stimulation, and may be altered in asthmatic airways. This study compared the expression of PI3K isoforms by ASM cells from donors with asthma (A), chronic obstructive pulmonary disease (COPD), or neither disease (NA), and investigated the role of PI3K isoforms in the production of TGFβ1 induced pro‐inflammatory cytokine and contractile proteins in ASM cells. A cells expressed higher basal levels of p110δ mRNA compared to NA and COPD cells; however COPD cells produced more p110δ protein. TGFβ1 increased 110δ mRNA expression to the same extent in the three groups. Neither the p110δ inhibitor IC87114 (1, 10, 30 µM), the p110β inhibitor TGX221 (0.1, 1, 10 µM) nor the PI3K pan inhibitor LY294002 (3, 10 µM) had any effect on basal IL‐6, calponin or smooth muscle α‐actin (α‐SMA) expression. However, TGFβ1 increased calponin and α‐SMA expression was inhibited by IC87114 and LY294002 in all three groups. IC87114, TGX221, and LY294002 reduced TGFβ1 induced IL‐6 release in a dose related manner in all groups of ASM cells. PI3K p110δ is important for TGFβ1 induced production of the contractile proteins calponin and α‐SMA and the proinflammatory cytokine IL‐6 in ASM cells, and may therefore be relevant as a potential therapeutic target to treat both inflammation and airway remodeling. J. Cell. Physiol. 227: 3044–3052, 2012. © 2011 Wiley Periodicals, Inc.
Emerging role of angiogenin in stress response and cell survival under adverse conditions
Authors: Li Shuping , Hu Guo‐Fu 
Published: October 2011

AbstractAngiogenin (ANG), also known as ribonuclease (RNASE) 5, is a member of the vertebrate‐specific, secreted RNASE superfamily. ANG was originally identified as a tumor angiogenic factor, but its biological activity has been extended from inducing angiogenesis to stimulating cell proliferation and more recently, to promoting cell survival. Under growth conditions, ANG is translocated to nucleus where it accumulates in nucleolus and stimulates ribosomal RNA (rRNA) transcription, thus facilitating cell growth and proliferation. Under stress conditions, ANG is accumulated in cytoplasmic compartments and modulates the production of tiRNA, a novel class of small RNA that is derived from tRNA and is induced by stress. tiRNA suppress global protein translation by inhibiting both cap‐dependent and ‐independent translation including that mediated by weak IRESes. However, strong IRES‐mediated translation, a mechanism often used by genes involved in pro‐survival and anti‐apoptosis, is not affected. Thus, ANG‐mediated tiRNA reprogram protein translation, save anabolic energy, and promote cell survival. This recently uncovered function of ANG presents a novel mechanism of action in regulating cell growth and survival. J. Cell. Physiol. 227: 2822–2826, 2012. © 2011 Wiley Periodicals, Inc.