bluuebunny/crossref_metadata_2025_split huggingface dataset:
Maximizing revenue in Grid markets using an economically enhanced resource manager
Authors: Macías M. , Rana O. , Smith G. , Guitart J. , Torres J. 
Published: September 2008

AbstractTraditional resource management has had as its main objective the optimization of throughput, based on parameters such as CPU, memory, and network bandwidth. With the appearance of Grid markets, new variables that determine economic expenditure, benefit and opportunity must be taken into account. The Self‐organizing ICT Resource Management (SORMA) project aims at allowing resource owners and consumers to exploit market mechanisms to sell and buy resources across the Grid. SORMA's motivation is to achieve efficient resource utilization by maximizing revenue for resource providers and minimizing the cost of resource consumption within a market environment. An overriding factor in Grid markets is the need to ensure that the desired quality of service levels meet the expectations of market participants. This paper explains the proposed use of an economically enhanced resource manager (EERM) for resource provisioning based on economic models. In particular, this paper describes techniques used by the EERM to support revenue maximization across multiple service level agreements and provides an application scenario to demonstrate its usefulness and effectiveness. Copyright © 2008 John Wiley & Sons, Ltd.
A current sensing completion detection method for asynchronous pipelines operating in the sub‐threshold regime
Authors: Akgun Omer Can , Gürkaynak Frank K. , Leblebici Yusuf 
Published: September 2008

AbstractDigital circuits operating in the sub‐threshold regime are able to perform minimum energy operation at a given delay. In the sub‐threshold regime the circuit delay, and hence, the leakage energy consumption depend on the supply voltage exponentially. By reducing the idle time of the circuit, the energy‐minimum supply voltage can be reduced, resulting in lower energy consumption.This paper first presents an energy model for comparing synchronous and asynchronous sub‐threshold operation. After the presentation of the model, design and simulation results of a novel current sensing based completion detection circuit that is applicable to coarse‐grained single‐rail asynchronous pipelines working in the sub‐threshold regime is shown. The system works by sensing the changes in the current consumption of static CMOS combinational blocks and generates completion signals delayed in proportion to the computation taking place.The method is applied as a proof of concept to the operation of a static CMOS 16‐bit adder logic block that has been designed using conventional EDA tools for a 0.18 µm CMOS process. When operating with a supply voltage of 220 mV, speed improvements of up to 19.3% have been observed in the operation of the circuit. If the system is operated at the asynchronous energy‐minimum supply voltage, an energy consumption reduction of 17% can be realized for the same computation load. Copyright © 2008 John Wiley & Sons, Ltd.
Locating repair servers in hierarchical reliable multicast networks to reduce the makespan
Authors: Byun Sang‐Seon , Yoo Chuck 
Published: September 2008

AbstractIn a hierarchical reliable multicast (HRM) environment,makespanis the time that is required to fully and successfully transmit a packet from the sender to all receivers. Low makespan is vital for achieving high throughput with a TCP‐like window‐based sending scheme. In HRM methods, the number of repair servers and their locations influence the makespan. In this paper we propose a new method to decide the locations of repair servers that can reduce the makespan in HRM networks. Our method has a formulation based on mixed integer programming to analyze the makespan minimization problem. A notable aspect of the formulation is that heterogeneous links and packet losses are taken into account in the formulation. Three different heuristics are presented to find the locations of repair servers in reasonable time in the formulation. Through simulations, three heuristics are carefully analyzed and compared on networks with different sizes. The results show that the our best heuristic is close to the lower bound by a factor of 2.3 in terms of makespan and by a factor of 5.5 in terms of the number of repair servers. Copyright © 2008 John Wiley & Sons, Ltd.
Performance of multi level‐turbo coding with neural network‐based channel estimation over WSSUS MIMO channels
Authors: Gose Ersin 
Published: September 2008

AbstractThis paper presents the performance of the transmit diversity‐multi level turbo codes (TD‐MLTC) over the multiple‐input–multiple‐output (MIMO) channels based on the wide sense stationary uncorrelated scattering (WSSUS). The multi level‐turbo code (ML‐TC) system contains more than one turbo encoder/decoder block in its structure. At the transmitter side, the ML‐TC uses the group partitioning technique that partitions a signal set into several levels and encodes each level separately by a proper component of the encoder to improve error performance. The binary input sequence is passed through the MLTC encoder and mapped to 4‐PSK and then fed into the transmit diversity scheme for high data transmission over wireless fading channels. At the receiver side, distorted multi‐path signals are received by multiple receiver antennae. WSSUS MIMO channel parameters are estimated by using an artificial neural network and an iterative combiner. Input sequence of the first level of the MLTC encoder is estimated at the first level of MLTC decoder. Subsequently, the other input sequences are computed by using the estimated input bit streams of the previous levels. 4‐PSK two‐level turbo codes are simulated for 2Tx−1Rxand 2Tx−2Rxantenna configurations over WSSUS MIMO channels. Here, TD‐MLTC and its efficient implementations are discussed and simulation results are given. Copyright © 2008 John Wiley & Sons, Ltd.
Delay constrained uplink scheduling policy for rtPS/ertPS service in IEEE 802.16e BWA systems
Authors: Deng Der‐Jiunn , Chang Li‐Wei , Ke Chih‐Heng , Huang Yueh‐Min , Chang J. Morris 
Published: September 2008

AbstractWiMAX is a promising broadband wireless networking technology and is expected to take the place of broadband access solutions such as DSL and cable. Owing to its superior support in mobility, it is expected to provide integrated voice and data service to realize broadband mobile computing. In order to reach better quality‐of‐service (QoS) requirements for real‐time applications, the IEEE 802.16e standard defines five different services among traffic categories with different multimedia requirements. However, the problem of choosing the right set of medium access control parameters and packet scheduling policy to provide strict QoS guaranteed in IEEE 802.16e Broadband Wireless Access (BWA) systems remains unsolved and left as an open issue. In this paper, we propose a novel polling‐based uplink packet scheduling policy for real‐time Polling Service and extended real‐time Polling Service (rtPS/ertPS) traffic to support real‐time applications, with strict delay requirements, such as variable bit rate (VBR) traffic in IEEE 802.16e BWA systems. The proposed transmit‐permission policy can derive sufficient conditions such that all the rtPS/ertPS sources satisfy their time constraints to provide deterministic QoS guarantees. In addition to theoretical analysis, simulations are conducted to evaluate the performance of the proposed scheme. As it turns out, our design provides a good quality performance in the IEEE 802.16e BWA systems. Copyright © 2008 John Wiley & Sons, Ltd.
The New Energetic Compounds 1,5‐Diaminotetrazolium and 5‐Amino‐1‐methyltetrazolium Dinitramide – Synthesis, Characterization and Testing (Eur. J. Inorg. Chem. 26/2008)
Authors: Klapötke Thomas M. , Stierstorfer Jörg 
Published: September 2008

AbstractThe cover picture shows the three main topics in the research of new energetic materials: explosives, propellants and pyrotechnics. Two new highly energetic dinitramides in combination with nitrogen‐rich tetrazolium cations are also presented. Details are discussed in the article by T. M. Klapötke and J. Stierstorfer on p. 4055 ff.
Seismic response of intake towers including dam–tower interaction
Authors: Millán M. A. , Young Y. L. , Prévost J. H. 
Published: September 2008

AbstractThe seismic response of the intake–outlet towers has been widely analyzed in recent years. The usual models consider the hydrodynamic effects produced by the surrounding water and the interior water, characterizing the dynamic response of the tower–water–foundation–soil system. As a result of these works, simplified added mass models have been developed. However, in all previous models, the surrounding water is assumed to be of uniform depth and to have infinite extension. Consequently, the considered added mass is associated with only the pressures created by the displacements of the tower itself. For a real system, the intake tower is usually located in proximity to the dam and the dam pressures may influence the equivalent added mass. The objective of this paper is to investigate how the response of the tower is affected by the presence of the dam. A coupled three‐dimensional boundary element‐finite element model in the frequency domain is employed to analyze the tower–dam–reservoir interaction problem. In all cases, the system response is assumed to be linear, and the effect of the internal fluid and the soil–structure interaction effects are not considered. The results suggest that unexpected resonance amplifications can occur due to changes in the added mass for the tower as a result of the tower–dam–reservoir interaction. Copyright © 2008 John Wiley & Sons, Ltd.
Existential well‐being in younger and older people with anorexia nervosa—a preliminary investigation
Authors: Fox Andy P. , Leung Newman 
Published: September 2008

AbstractObjectivePrevious research suggests that anorexic behaviour may be an attempt to introduce control into a chaotic environment, and that the need for stability and meaning in life is an important factor in the development of psychopathologies. The phenomenon of ‘existential anxiety’ is a characteristic reaction to a lack of meaning in the life of an individual. This preliminary study attempted to identify whether existential concerns are associated with anorexic symptoms.MethodTwo groups of women with anorexia (those aged between 18 and 30, and those aged over 30, respectively) were compared to two age‐matched comparison groups across four measures: The eating disorder inventory (EDI), the Beck depression inventory (BDI), the anorectic cognition scale and the McGill quality of life existential well‐being subscale.ResultsBoth anorexia groups demonstrated lower existential well‐being scores and higher eating psychopathology than their comparison groups. However, while significant relationships between eating disorder symptoms and existential well‐being were found in the older anorexia group, no such relationships were found in the younger anorexia group.DiscussionIndividuals with symptoms of anorexia nervosa appear to experience lower existential well‐being than their non‐eating disordered peers, although it is unclear how this may be related to psychopathology. This result may offer some explanation as to why anorexia nervosa is so resistant to treatment efforts. Copyright © 2008 John Wiley & Sons, Ltd and Eating Disorders Association.
Bigorexia: bodybuilding and muscle dysmorphia
Authors: Mosley Philip E. 
Published: September 2008

AbstractMuscle dysmorphia is an emerging condition that primarily affects male bodybuilders. Such individuals obsess about being inadequately muscular. Compulsions include spending hours in the gym, squandering excessive amounts of money on ineffectual sports supplements, abnormal eating patterns or even substance abuse. In this essay, I illustrate the features of muscle dysmorphia by employing the first‐person account of a male bodybuilder afflicted by this condition. I briefly outline the history of bodybuilding and examine whether the growth of this sport is linked to a growing concern with body image amongst males. I suggest that muscle dysmorphia may be a new expression of a common pathology shared with the eating disorders. Copyright © 2008 John Wiley & Sons, Ltd and Eating Disorders Association.
Fatigue life expenditure assessment and countermeasure for turbine blades due to harmonic excitations of slip energy recovery drives
Authors: Tsai Jong‐Ian 
Published: September 2008

AbstractThe long‐term effect of noncharacteristic harmonic currents arising from a slip energy recovery drive (SERD) on the fatigue life expenditure in turbine‐generator blades is presented in this paper. Since the SERD converter can be rated at a fraction of a motor due to its static converter cascade with the wound‐rotor and with high efficiency characteristics, still the feedwater pumps (FPs) in a few power plants are driven by such an induction motor (IM) drive. However, because the frequencies of the three main harmonic terms of the recovery currents are subsynchronous and offer a probability distribution due to the adjustable speed operation, a systematic fatigue estimation approach was devised by the author to investigate the long‐term impact for the low‐pressure (LP) turbine blades. From the simulation results, it was found that such a long‐term harmonic excitation becomes a cause of turbine blade failure for single generator connected to the SERD system, even though the amplitude of these harmonic currents is normal. By the effect analysis of uncertainty, the countermeasure for the turbine integrity was then found. Copyright © 2008 John Wiley & Sons, Ltd.
Anxiety symptoms in mild cognitive impairment
Authors: Rozzini Luca , Chilovi Barbara Vicini , Peli Matteo , Conti Marta , Rozzini Renzo , Trabucchi Marco , Padovani Alessandro 
Published: September 2008

AbstractIntroductionAnxiety disorders are less well studied in elderly people than other disorders such as depression. In particular the diagnosis of anxiety is more difficult in patients with
Mild Cognitive Impairment (MCI) since the current definition of MCI does not mention neuropsychiatric symptoms.ObjectivesTo validate the Italian version of Geriatric Anxiety Inventory (GAI), an instrument that measures dimensional anxiety in elderly people, and assess whether MCI subjects with anxiety symptoms show different neuropsychological profiles in comparison with MCI without anxiety symptoms.MethodsFifty‐seven outpatients with MCI were consecutively recruited. All patients were assessed using a complete neuropsychological battery to detect the cognitive impairment, and the GAI for the presence of anxiety symptoms.ResultsAnxiety + patients (GAI ≥ 10) show more behavioral and psychological disturbances than patients with Anxiety‐ (GAI < 10); in particular they had more agitation, anxiety, depression and more sleep disorders. Moreover, Anxiety + patients are more compromised on instrumental daily functions and on executive functions evaluated with Trail Making B test (TMB). Linear Regression analysis was completed to estimate the coefficients of the linear equation, involving neuropsychological, psychobehavioural and functional characteristics: the executive functions (TMB) are the only variable independently related to the presence of anxiety disturbances.ConclusionsExecutive functions are independently related to anxiety disorders in MCI patients. We hypothesized that the strict interaction between anxiety symptoms and executive functions could depend on specific pathological features at the level of caudate nucleus characterizing early phases of dementia. Copyright © 2008 John Wiley & Sons, Ltd.
Access to public mental health services among older adults with severe mental illness
Authors: Gilmer Todd P. , Ojeda Victoria D. , Fuentes Dahlia , Criado Viviana , Garcia Piedad 
Published: September 2008

AbstractObjectiveLimited data are available on how older adults access public mental health systems. This study examines how uninsured or publicly insured older adults with severe mental illness in San Diego County initially accessed the public mental health system, as well as their subsequent use of public mental health services, as compared to younger adults.MethodsData from San Diego County, 2002–2006, were used to examine how older adults initially accessed the public mental health system, and their utilization over the subsequent 90 days. Multivariate regression models were used to control for demographic and clinical characteristics.ResultsOlder adults (age 60 +) were more likely to access the public mental health system through the Psychiatric Emergency Response Team (PERT), a combined law‐enforcement and psychiatric service that responds to psychiatric related 911 calls. Older adults were also less likely to receive follow‐up care. This lower rate of follow‐up was due to both the initial site of service––and an associated lower rate of follow‐up among PERT clients––as well as a lower rate of follow‐up among older adult clients initiating services in other sectors.ConclusionsThis paper suggests two areas for intervention that would improve access to care for older adults: improving linkages and referrals between PERT and outpatient providers; and additional efforts to retain older adults at outpatient programs. Copyright © 2008 John Wiley & Sons, Ltd.
Efficient power‐bus modeling based on an adaptive frequency sampling technique
Authors: Antonini Giulio , Deschrijver Dirk , Dhaene Tom 
Published: September 2008

AbstractThis paper presents an adaptive frequency sampling algorithm to generate a rational macromodel of a power delivery network. To this aim, the cavity model is assumed to represent the structure and accurate models of conductor and dielectric losses are incorporated. The adaptive sampling algorithm allows one to minimize the order of the macromodel and number of frequency samples used to extract the rational macromodel. The numerical results demonstrate the effectiveness of the proposed method. Copyright © 2008 John Wiley & Sons, Ltd.
An empirical examination of the role of attributions in psychological entitlement and its outcomes
Authors: Harvey Paul , Martinko Mark J. 
Published: September 2008

AbstractPsychological entitlement refers to the phenomenon in which individuals consistently believe that they deserve preferential rewards and treatment, often with little consideration of actual qualities or performance levels. This study examines the influence of psychological entitlement on workplace outcomes, using attribution theory to explain its effects. Results suggested that entitlement perceptions are positively associated with self‐serving attribution styles and that diminished need for cognition mediates this relationship. Self‐serving attribution styles, in turn, were associated with reduced job satisfaction and increased levels of conflict with supervisors. A direct positive relationship between psychological entitlement and turnover intent was also observed. Overall, results suggest that an attributional perspective is useful in explaining and understanding the influence of entitlement perceptions on workplace outcomes. Copyright © 2008 John Wiley & Sons, Ltd.
Optical traps for single molecule biophysics: a primer
Authors: Perkins T.T. 
Published: September 2008

AbstractOptical trapping experiments of different complexities are making a significant impact in biology. This review seeks to highlight design choices for scientists entering the field or building new instruments and to discuss making calibrated measurements with optical traps. For specificity, this review focuses on nucleic acid‐based assays, but the discussion reflects the general experimental design considerations of developing a biological assay and an optical trap to measure it.
Monitoring of hydrogen generated by corrosion reactions of steel
Authors: Abbassi A. , Mihi A. , Benbouta R. 
Published: September 2008

AbstractA solid‐state sensor has been constructed and used for the detection of hydrogen generated during corrosion of steel in pH2 solutions. In addition to that, weight loss, AC impedance measurements and selected slow strain rate tests were performed under the same conditions as the hydrogen measurements in order to ascertain the degree of embrittlement of steel.The use of such a device in cathodic protection by impressed current in artificial seawater was also investigated.
Strychnos nux‐vomica an eco‐friendly corrosion inhibitor for mild steel in 1 M sulfuric acid medium
Authors: Bothi Raja P. , Sethuraman M. G. 
Published: September 2008

AbstractThe inhibition efficiency of the extract of Strychnos nux‐vomica for the corrosion of mild steel in 1 M sulfuric acid was investigated using weight loss test (carried out at 303–323 K), electrochemical measurement, and scanning electron microscope (SEM). The results of weight loss studies indicated that the inhibition efficiency increased with inhibitor concentration and the temperature of the system (following Temkin adsorption isotherm). Electrochemical studies proved that the inhibitor acts through mixed mode of inhibition and the inhibitor molecules adsorb on the metal–solution interface. SEM studies supported the adsorption of the inhibitor over the metal surface. The possible active ingredient responsible for the anticorrosion effect is identified as brucine which is isolated and screened for the anticorrosion effect using electrochemical studies and quantum chemical studies. The possible mode of corrosion inhibition of brucine is also derived using FT‐IR studies.
Two‐step electrosynthesis of polypyrrole for corrosion protection of stainless steel
Authors: Zhu R. , Li G. , Huang G. 
Published: September 2008

AbstractSmooth polypyrrole (PPy) films were successfully electrosynthesized on a stainless steel (SS, 1Cr18Ni9) surface by a self‐catalytic two‐step process. SS substrate dissolution during PPy electrosynthesis was effectively depressed. The redox properties and corrosion behavior of PPy film coated SS electrodes were investigated by cyclic voltammetry, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization. The reduction of PPy was found to include two reaction processes: an anion dedoping process and a cation insertion process. The PPy film was found to lose its electroactivity when polarized at high potentials due to peroxidation. EIS of SS/PPy mainly corresponds to PPy film response and charge transfer resistance decreases as film thickness increases, indicating that SS corrosion can be inhibited effectively by the PPy film.
Scaling characteristics and growth of corrosion product films in turbulent flow solution containing saturated CO2
Authors: Yin Z. F. , Zhao W. Z. , Feng Y. R. , Li Y. H. , Yin C. X. 
Published: September 2008

AbstractIn the present study, the surface and cross‐section microstructures of the corrosion films were investigated by SEM and the corrosion rate was measured by mass loss at the various conditions associated with the main influencing factors such as temperature, CO2 partial pressure, and flow velocity. The results indicated that the three factors have obvious characteristics and the enhanced interactions among the main influencing factors intensively influence the formation and growth of corrosion film. In addition, there were two corrosion mechanisms connected with the forming film and damaging film. A new lattice model was proposed to describe the general aspects concerning the formation of the corrosion film at the metal surface/solution interfaces.