bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ruthenium catalyzed ethenolysis of renewable oleonitrile
Authors: Bidange Johan , Dubois Jean‐Luc , Couturier Jean‐Luc , Fischmeister Cédric , Bruneau Christian 
Published: June 2014

Oleonitrile is a bio‐sourced compound readily obtained by ammoniation of the renewable oleic acid. The production of the short chain undecenitrile by ethenolysis (cross‐metathesis with ethylene) of oleonitrile is reported. Optimization of the reaction conditions led to promising TONs of 1400 with high selectivity for the ethenolysis products. From a series of catalysts tested, the bulky and activated M71 SiPr catalyst enabled the best performances. The influence of feed purification method was investigated in details and it was found that thermal treatment of the feed was required to ensure the highest productivity.Practical applications: The selective ethenolysis of oleonitrile provides a direct access to bio‐sourced 9‐decenitrile and 1‐decene. These two compounds of interest for the synthesis of polymers precursors have also some potential use as fuel additives.The ruthenium catalyzed cross‐metathesis of the bio‐sourced oleonitrile with ethylene (ethenolysis) is presented. 9‐Decenitrile and 1‐decene were produced with high selectivity (88%) at low catalyst loading (0.0625 mol%).
Wave dispersion in high‐rise buildings due to soil–structure interaction
Authors: Rahmani Mohammadtaghi , Ebrahimian Mahdi , Todorovska Maria I. 
Published: June 2014

SummaryNonparametric techniques for estimation of wave dispersion in buildings by seismic interferometry are applied to a simple model of a soil–structure interaction (SSI) system with coupled horizontal and rocking response. The system consists of a viscously damped shear beam, representing a building, on a rigid foundation embedded in a half‐space. The analysis shows that (i) wave propagation through the system is dispersive. The dispersion is characterized by lower phase velocity (softening) in the band containing the fundamental system mode of vibration, and little change in the higher frequency bands, relative to the building shear wave velocity. This mirrors its well‐known effect on the frequencies of vibration, i.e. reduction for the fundamental mode and no significant change for the higher modes of vibration, in agreement with the duality of the wave and vibrational nature of structural response. Nevertheless, the phase velocity identified from broader band impulse response functions is very close to the superstructure shear wave velocity, as found by an earlier study of the same model. The analysis reveals that (ii) the reason for this apparent paradox is that the latter estimates are biased towards the higher values, representative of the higher frequencies in the band, where the response is less affected by SSI. It is also discussed that (iii) bending flexibility and soil flexibility produce similar effects on the phase velocities and frequencies of vibration of a building. Copyright © 2014 John Wiley & Sons, Ltd.
Tracking cerebral blood flow in BOLD fMRI using recursively generated regressors
Authors: Tong Yunjie , Frederick Blaise deB. 
Published: June 2014

AbstractBOLD functional MRI (fMRI) data are dominated by low frequency signals, many of them of unclear origin. We have recently shown that some portions of the low frequency oscillations found in BOLD fMRI are systemic signals closely related to the blood circulation (Tong et al. [2013]: NeuroImage 76:202–215). They are commonly treated as physiological noise in fMRI studies. In this study, we propose and test a novel data‐driven analytical method that uses these systemic low frequency oscillations in the BOLD signal as a tracer to follow cerebral blood flow dynamically. Our findings demonstrate that: (1) systemic oscillations pervade the BOLD signal; (2) the temporal traces evolve as the blood propagates though the brain; and, (3) they can be effectively extracted via a recursive procedure and used to derive the cerebral circulation map. Moreover, this method is independent from functional analyses, and thus allows simultaneous and independent assessment of information about cerebral blood flow to be conducted in parallel with the functional studies. In this study, the method was applied to data from the resting state scans, acquired using a multiband EPI sequence (fMRI scan with much shorter TRs), of seven healthy participants. Dynamic maps with consistent features resembling cerebral blood circulation were derived, confirming the robustness and repeatability of the method. Hum Brain Mapp 35:5471–5485, 2014. © 2014 Wiley Periodicals, Inc.
Oxidation and other property changes of retrieved sequentially annealed UHMWPE acetabular and tibial bearings
Authors: Reinitz Steven D. , Currier Barbara H. , Van Citters Douglas W. , Levine Rayna A. , Collier John P. 
Published: June 2014

AbstractThis investigation analyzed retrieved sequentially crosslinked and annealed (SXL) ultra‐high molecular weight polyethylene bearings to determine whether the material is chemically stable in vivo. A series of retrieved tibial and acetabular components were analyzed for changes in ketone oxidation, crosslink density, and free radical concentration. Oxidation was observed to increase with in vivo duration, and the rate of oxidation in tibial inserts was significantly greater than in acetabular liners. SXL acetabular bearings oxidized at a rate comparable to gamma‐sterilized liners, while SXL tibial inserts oxidized at a significantly faster rate than their gamma‐sterilized counterparts. A significant decrease in crosslink density with increased mean ketone oxidation index was observed, suggesting that in vivo oxidation may be causing material degradation. Furthermore, a subsurface whitened damage region was also found in a subset of the bearings, indicating the possibility of a clinically relevant decrease in mechanical properties of these components. © 2014 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 103B: 578–586, 2015.
Similarity as a central approach to flow‐based anomaly detection
Authors: Drašar Martin , Vizváry Martin , Vykopal Jan 
Published: June 2014

SUMMARYNetwork flow monitoring is currently a common practice in mid‐ and large‐size networks. Methods of flow‐based anomaly detection are subject to ongoing extensive research, because detection methods based on deep packets have reached their limits. However, there is a lack of comprehensive studies mapping the state of the art in this area. For this reason, we have conducted a thorough survey of flow‐based anomaly detection methods published on academic conferences and used by the industry. We have analyzed these methods using the perspective of similarity which is inherent to any anomaly detection method. Based on this analysis, we have proposed a new taxonomy of network anomalies and a similarity‐oriented classification of flow‐based detection methods. We have also identified four issues requiring further research: the lack of flow‐based evaluation datasets, infeasible benchmarking of proposed methods, excessive false positive rate and limited coverage of certain anomaly classes. Copyright © 2014 John Wiley & Sons, Ltd.
Compensatory Postural Sway While Seated Posture During Tasks in Children with Autism Spectrum Disorder
Authors: Funahashi Yoshimi , Karashima Chieko , Hoshiyama Minoru 
Published: June 2014

AbstractPostural stability while seated was investigated in 16 children with autism spectrum disorder (ASD) and 16 typically developed (TD) children, aged 7–8 years. The lateral and antero‐posterior (A‐P) deviations of the centre of pressure (COP) were serially measured during sequential, upper limb, desk‐top tasks, including nine subtests. The average COP deviation was larger, especially in the lateral direction, in the group of children with ASD compared with TD children. However, the larger COP deviation in the children with ASD was not generalized across tasks. Analyses of subtests revealed that deviations were different on three and four (of eight) subtests in the lateral and A‐P directions, respectively. The time needed to complete each subtest was not correlated with the lateral COP deviation but with A‐P deviation during the subtest in the children with ASD. Preserved task performance with marked body sway in the children with ASD suggested that the body sway was not a functionally abnormal movement that disturbed performance but could be a compensatory movement to actually facilitate performance. A new approach with occupational therapy to support such compensatory movement of ASD children could be considered in their school life. Further studies, including those in the classroom, to clarify the relationship between daily task performance and body instability are necessary. Copyright © 2014 John Wiley & Sons, Ltd.
Investigating the potential role of TRPA1 in locomotion and cardiovascular control during hypertension
Authors: Bodkin Jennifer V. , Thakore Pratish , Aubdool Aisah A. , Liang Lihuan , Fernandes Elizabeth S. , Nandi Manasi , Spina Domenico , Clark James E. , Aaronson Philip I. , Shattock Michael J. , Brain Susan D. 
Published: June 2014

AbstractRadiotelemetry was used to investigate the in vivo cardiovascular and activity phenotype of both TRPA1 (transient receptor potential ankyrin 1) wild‐type (WT) and TRPA1 knockout (KO) mice. After baseline recording, experimental hypertension was induced using angiotensin II infusion (1.1 mg−1 kg−1 a day, for 14 days). TRPA1 WT and KO mice showed similar morphological and functional cardiovascular parameters, including similar basal blood pressure (BP), heart rate, size, and function. Similar hypertension was also displayed in response to angiotensin II (156 ± 7 and 165 ± 11 mmHg, systolic BP ± SEM, n = 5–6). TRPA1 KO mice showed increased hypertensive hypertrophy (heart weight:tibia length: 7.3 ± 1.6 mg mm−1 vs. 8.8 ± 1.7 mg mm−1) and presented with blunted interleukin 6 (IL‐6) production compared with hypertensive WT mice (151 ± 24 vs. 89 ± 16 pg mL−1). TRPA1 expression in dorsal root ganglion (DRG) neurones was upregulated during hypertension (163% of baseline expression). Investigations utilizing the TRPA1 agonist cinnamaldehyde (CA) on mesenteric arterioles isolated from näive mice suggested a lack of TRPA1‐dependent vasoreactivity in this vascular bed; a site with notable ability to alter total peripheral resistance. However, mesenteric arterioles isolated from TRPA1 KO hypertensive mice displayed significantly reduced ability to relax in response to nitric oxide (NO) (P < 0.05). Unexpectedly, naïve TRPA1 KO mice also displayed physical hyperactivity traits at baseline, which was exacerbated during hypertension. In conclusion, our study provides a novel cardiovascular characterization of TRPA1 KO mice in a model of hypertension. Results suggest that TRPA1 has a limited role in global cardiovascular control, but we demonstrate an unexpected capacity for TRPA1 to regulate physical activity.
Detecting stepping stones by abnormal causality probability
Authors: Wen Sheng , Wu Di , Li Ping , Xiang Yang , Zhou Wanlei , Wei Guiyi 
Published: June 2014

AbstractLocating the real source of the Internet attacks has long been an important but difficult problem to be addressed. In the real world, attackers can easily hide their identities and evade punishment by relaying their attacks through a series of compromised systems or devices called stepping stones. Currently, researchers mainly use similar features from the network traffic, such as packet timestamps and frequencies, to detect stepping stones. However, these features can be easily destroyed by attackers using evasive techniques. In addition, it is also difficult to implement an appropriate threshold of similarity that can help justify the stepping stones. In order to counter these problems, in this paper, we introduce the consistent causality probability to detect the stepping stones. We formulate the ranges of abnormal causality probabilities according to the different network conditions, and on the basis of it, we further implement to self‐adaptive methods to capture stepping stones. To evaluate our proposed detection methods, we adopt theoretic analysis and empirical studies, which demonstrate accuracy of the abnormal causality probability. Moreover, we compare our proposed methods with previous works. The result shows that our methods in this paper significantly outperform previous works in the accuracy of detection malicious stepping stones, even when evasive techniques are adopted by attackers. Copyright © 2014 John Wiley & Sons, Ltd.
DMAM: distributed mobility and authentication mechanism in next generation networks
Authors: Zubair Muhammad , Kong Xiangwei , Mahfooz Saeed 
Published: June 2014

AbstractTraditional centralized approaches toward mobility management such as MIPv6 and its variants suffer because of the performance issues like single‐point failure, non‐optimal routing, low scalability, authentication latency, and signaling messages overhead of the mobility protocols. In this paper, we propose a novel network‐based Distributed Mobility and Authentication Mechanism (DMAM) to focus on these issues. DMAM decomposes centralized mobility functions into Home Address Allocation, mobility routing (MR), and location management (LM). A new entity is introduced in DMAM, called Location and Mobility Manager that distributes MR and LM among multiple routers to which mobile node can be attached. Furthermore, DMAM offers strong authentication mechanism based on symmetric cryptographic and collision‐free one‐way hash function. The performance of proposed scheme is analyzed and compared with existing approaches in terms of handover latency, handover blocking probability, packet loss, communication overhead, and computational cost. The conducted numerical results demonstrate that DMAM outperforms the existing approaches. Copyright © 2014 John Wiley & Sons, Ltd.
Are concurrency coverage metrics effective for testing: a comprehensive empirical investigation
Authors: Hong Shin , Staats Matt , Ahn Jaemin , Kim Moonzoo , Rothermel Gregg 
Published: June 2014

SummaryTesting multithreaded programs is inherently challenging, as programs can exhibit numerous thread interactions. To help engineers test these programs cost‐effectively, researchers have proposed concurrency coverage metrics. These metrics are intended to be used as predictors for testing effectiveness and provide targets for test generation. The effectiveness of these metrics, however, remains largely unexamined. In this work, we explore the impact of concurrency coverage metrics on testing effectiveness and examine the relationship between coverage, fault detection, and test suite size. We study eight existing concurrency coverage metrics and six new metrics formed by combining complementary metrics. Our results indicate that the metrics are moderate to strong predictors of testing effectiveness and effective at providing test generation targets. Nevertheless, metric effectiveness varies across programs, and even combinations of complementary metrics do not consistently provide effective testing. These results highlight the need for additional work on concurrency coverage metrics. Copyright © 2014 John Wiley & Sons, Ltd.
A new sparse design framework for broadband power amplifier behavioral modeling and digital predistortion
Authors: Li Mingyu , Li Chuan , Chen Gong , Zhang Yu , Dong Qing , Nakatake Shigetoshi 
Published: June 2014

AbstractIn this paper, we propose a new sparse framework for the design of the behavioral model and digital predistorter of a broadband power amplifier (PA). We start by formulating the Volterra kernel to multidimensional memory polynomial by considering the high‐order dynamic truncation of the Volterra model. Then we show how an estimate of the most significant coefficients may be obtained using a matching pursuit (MPT) algorithm by exploiting the sparsity of the model. After the indices of the nonzero coefficients are roughly estimated, the block exact Householder inverse QR‐decomposition‐based recursive least squares (HIQRD‐RLS) algorithm is utilized to estimate the sparse model complex coefficients. For broadband nonlinear PAs, the proposed approach is demonstrated to achieve the best performance among the well‐known traditional approaches in terms of in‐band and out‐of‐band specifications. The proposed approach is also validated by evaluating the digital predistortion (DPD) performance on a Class‐AB PA in terms of adjacent channel power ratio (ACPR). © 2014 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
Validation of the standalone implementation of the dynamic wake meandering model for power production
Authors: Keck Rolf‐Erik 
Published: June 2014

AbstractThis paper presents validation for using the standalone implementation of the dynamic wake meandering (DWM) model to conduct numerical simulations of power production of rows of wind turbines.The standalone DWM model is an alternative formulation of the conventional DWM model that does not require information exchange with an aeroelastic code. As a consequence, the standalone DWM model has significantly shorter computational times and lower demands on the user environment. The drawback of the standalone DWM model is that it does not have the capability to predict turbine loads. Instead, it should be seen as an alternative for simulating the power production of a wind farm. The main advantage of the standalone DWM model is the ability to capture the key physics for wake dynamics such as the turbine specific induction, the build‐up of wake turbulence and wake deficit in the wind farm, and the effect of ambient turbulence intensity and atmospheric stability.The predicted power production of the standalone DWM model is compared with that of full scale measurements from Horns Rev, Lillgrund, Nysted and Weingermeer wind farms. Overall, the difference between the models predictions and the reference data is on the order of 5%. Copyright © 2014 John Wiley & Sons, Ltd.
Noninvasive evaluation of left ventricular force−frequency relationships by measuring carotid arterial wave intensity during exercise stress
Authors: Tanaka Midori , Sugawara Motoaki , Ogasawara Yasuo , Suminoe Isao , Izumi Tadafumi , Niki Kiyomi , Kajiya Fumihiko 
Published: June 2014

Abstract

Background and purpose
Estimation of the contractility of the left ventricle during exercise is important in drawing up a protocol of cardiac rehabilitation. It has been demonstrated that color Doppler- and echo tracking-derived carotid arterial wave intensity is a sensitive index of global left ventricular (LV) contractility. We assessed the feasibility of measuring carotid arterial wave intensity and determining force−frequency (contractility−heart rate) relations (FFRs) during exercise totally noninvasively.

Methods
We measured carotid arterial wave intensity with a combined color Doppler and echo tracking system in 25 healthy young male volunteers (age 20.8 ± 1.2 years) at rest and during exercise. FFRs were constructed by plotting the maximum value of wave intensity (WD1) against heart rate (HR).

Results
We first confirmed that HR increased linearly with an increase in work load in each subject (r
2 = 0.95 ± 0.04). WD1 increased linearly with an increase in HR. The goodness-of-fit of the regression line of WD1 on HR in each subject was very high (r
2 = 0.48−0.94, p < 0.0001, respectively). The slope of the WD1-HR relation ranged 0.30−2.20 [m/s3 (beat/min)].

Conclusions
Global LV FFRs can be generated in healthy young volunteers with an entirely noninvasive combination of exercise and wave intensity. These data should show the potential usefulness of the FFR in the context of cardiac rehabilitation.
Promoting Meaning‐Making to Help our Patients Grieve: An Exemplar for Genetic Counselors and Other Health Care Professionals
Authors: Douglas Heather A. 
Published: June 2014

AbstractGenetic counselors and other health professionals frequently meet with patients who are grieving a loss. It is thus helpful for medical professionals to be familiar with approaches to bereavement counseling. Grief theory has evolved over the last few decades, from primarily stage theories of grief such as Kübler‐Ross's “five stages of grief” to frameworks that promote more complex and long‐term ways to cope with a loss. Herein I present one recent grief theory – meaning‐making ‐ and describe how it can be applied to help parents of children with disabilities grieve the loss of the child that they expected. In particular, I describe a scenario that many genetic counselors face ‐ meeting with the parents of a child with Down syndrome. I outline the research done on the reactions, grief and coping experienced by parents in this circumstance, and I present suggestions for encouraging healthy coping and adjustment for parents, based on the meaning‐making perspective. The meaning‐making theory can also be applied to many of the other losses faced by genetic counseling patients.
The role of high-density lipoprotein cholesterol in risk for posttraumatic stress disorder: Taking a nutritional approach toward universal prevention
Authors: Hamazaki K. , Nishi D. , Yonemoto N. , Noguchi H. , Kim Y. , Matsuoka Y. 
Published: June 2014

AbstractSeveral cross-sectional studies, but no prospective studies, have reported an association between an abnormal lipid profile and posttraumatic stress disorder (PTSD). We hypothesized that an abnormal lipid profile might predict risk for developing PTSD. In this prospective study, we analyzed data from 237 antidepressant-naïve severely injured patients who participated in the Tachikawa Cohort of Motor Vehicle Accident Study. High-density lipoprotein cholesterol (HDL-C) levels at baseline were significantly lower in patients with PTSD than those without PTSD at 6 months after motor vehicle accident (MVA) and were inversely associated with risk for PTSD. In contrast, triglycerides (TG) at baseline were significantly higher in patients with PTSD than in those without PTSD at 6 months post-MVA and were positively associated with risk for PTSD. There was no clear association between low-density lipoprotein cholesterol or total cholesterol and risk for PTSD. In conclusion, low HDL-C and high TG may be risk factors for PTSD. Determining lipid profiles might help identify those at risk for PTSD after experiencing trauma.
The Practice and Justifications of Plea Bargaining by Hong Kong Criminal Defence Lawyers
Authors: CHENG Kevin Kwok-yin 
Published: June 2014

AbstractUnlike Western common-law jurisdictions where plea bargaining has been acknowledged, official discourse in Hong Kong denies the existence of plea bargaining. However, defence lawyers are staunch supporters of its use behind the scenes. Using in-depth, semi-structured interviews with Hong Kong criminal defence lawyers, it was found that lawyers’ justifications are based on four main grounds: it is non-coercive because the final decision is left to the accused; negotiations avoid the risks of trials; plea bargaining is a practical solution that is in the best interests of the client and the state; and the courts implicitly tolerate the practice. The findings can be explained by Eisenstein and Jacob’s (1991) courtroom workgroup model. The present study seeks to bridge the gap in the literature where plea bargaining has only been discussed predominately in the context of Western common-law jurisdictions.