bluuebunny/crossref_metadata_2025_split huggingface dataset:
Efficient risk assessment of lifeline networks under spatially correlated ground motions using selective recursive decomposition algorithm
Authors: Lim Hyun‐Woo , Song Junho 
Published: February 2012

SUMMARYFor effective hazard mitigation planning and prompt‐but‐prudent post‐disaster responses, it is essential to evaluate the reliability of infrastructure networks accurately and efficiently. A nonsimulation‐based algorithm, termed as a recursive decomposition algorithm (RDA), was recently proposed to identify disjoint cut sets and link sets and to compute the network reliability. This paper introduces a ‘selective’ RDA, which preferentially identifies critical disjoint cut sets and link sets to calculate the probabilities of network disconnection events with a significantly reduced number of identified sets. To this end, the original RDA is improved by replacing the shortest path algorithm with an algorithm that identifies the most reliable path, and by using a graph decomposition scheme based on the probabilities associated with the subgraphs. The critical sets identified by the algorithm are also used to compute conditional probability‐based importance measures that quantify the relative importance of network components by their contributions to network disconnection events. This paper also introduces a risk assessment framework for lifeline networks based on the use of the selective RDA, which can consider both interevent and intraevent uncertainties of spatially correlated ground motions. The risk assessment framework and the selective RDA are demonstrated by a hypothetical network example, and the gas and water transmission networks of Shelby County in Tennessee, USA. The examples show that the proposed framework and the selective RDA greatly improve efficiency of risk assessment of complex lifeline networks, which are characterized by a large number of components, complex network topology, and statistical dependence between component failures. Copyright © 2012 John Wiley & Sons, Ltd.
Clinically relevant drug interactions in anxiety disorders
Authors: Muscatello Maria Rosaria , Spina Edoardo , Bandelow Borwin , Baldwin David S. 
Published: February 2012

ObjectiveCertain drugs used in the treatment of patients with anxiety disorders can interact with other psychotropic drugs and with pharmacological treatments for physical illnesses. There is a need for an updated comparative review of clinically relevant drug interactions in this area.DesignRelevant literature on drug interactions with medications used in the treatment of anxiety disorders was identified through a search in MEDLINE and EMBASE.ResultsDrug interactions involving medications used to treat anxiety disorders may be pharmacokinetic, such as enzyme inhibition or induction in the cytochrome P450 system and transporter‐mediated drug interactions, or pharmacodynamic, such as additive effects in causing drowsiness or additive effects at neurotransmitter receptors. Certain selective serotonin reuptake inhibitors (fluoxetine, fluvoxamine, and paroxetine) are particularly liable to be potentially involved in untoward pharmacokinetic interactions.ConclusionsThe potential for drug interactions with medications used in anxiety disorders should be the cause of clinical concern, particularly in elderly individuals. However, the liability for harmful drug interactions may be anticipated, and the risk reduced. Although not all interactions are clinically relevant, careful monitoring of clinical response and possible interactions is essential. Copyright © 2012 John Wiley & Sons, Ltd.
Mothers' and Fathers' Parenting Quality and Toddlers' Interactive Behaviours in Dyadic and Triadic Family Contexts
Authors: Kwon Kyong‐Ah , Jeon Hyun‐Joo , Lewsader Joellen T , Elicker James 
Published: February 2012

AbstractBased on a family systems perspective, this research examined the role of parental gender and family play context in parent–toddler interactions and how behaviours of family members influence each other. Sixty‐seven mostly White, middle‐class families consisting of a mother, father and toddler were videotaped in three separate sessions: mother–child, father–child and both parents–child at a university laboratory setting. The results indicated that there were significant main effects of both parent gender (mother versus father) and context (dyadic versus triadic) on parents' positive and negative parenting and children's engagement and negativity toward parents. Higher levels of mutual engagement between mothers and toddlers were associated with lower levels of fathers' positive parenting and children's engagement with fathers, when moving from the dyadic to the triadic play context. However, fathers' mutual engagement with toddlers was not associated with mothers' parenting quality and child interactive behaviours with mothers. There were also interaction effects of parent gender and context on parents' negative parenting and children's engagement and negativity toward parents. This study adds unique insights to the differences and similarities of parent–child dyadic and triadic interactions during toddlerhood. Copyright © 2012 John Wiley & Sons, Ltd.
Function biomedical informatics research network recommendations for prospective multicenter functional MRI studies
Authors: Glover Gary H. , Mueller Bryon A. , Turner Jessica A. , van Erp Theo G.M. , Liu Thomas T. , Greve Douglas N. , Voyvodic James T. , Rasmussen Jerod , Brown Gregory G. , Keator David B. , Calhoun Vince D. , Lee Hyo Jong , Ford Judith M. , Mathalon Daniel H. , Diaz Michele , O'Leary Daniel S. , Gadde Syam , Preda Adrian , Lim Kelvin O. , Wible Cynthia G. , Stern Hal S. , Belger Aysenil , McCarthy Gregory , Ozyurt Burak , Potkin Steven G. 
Published: February 2012

AbstractThis report provides practical recommendations for the design and execution of multicenter functional MRI (MC‐fMRI) studies based on the collective experience of the Function Biomedical Informatics Research Network (FBIRN). The study was inspired by many requests from the fMRI community to FBIRN group members for advice on how to conduct MC‐fMRI studies. The introduction briefly discusses the advantages and complexities of MC‐fMRI studies. Prerequisites for MC‐fMRI studies are addressed before delving into the practical aspects of carefully and efficiently setting up a MC‐fMRI study. Practical multisite aspects include: (i) establishing and verifying scan parameters including scanner types and magnetic fields, (ii) establishing and monitoring of a scanner quality program, (iii) developing task paradigms and scan session documentation, (iv) establishing clinical and scanner training to ensure consistency over time, (v) developing means for uploading, storing, and monitoring of imaging and other data, (vi) the use of a traveling fMRI expert, and (vii) collectively analyzing imaging data and disseminating results. We conclude that when MC‐fMRI studies are organized well with careful attention to unification of hardware, software and procedural aspects, the process can be a highly effective means for accessing a desired participant demographics while accelerating scientific discovery. J. Magn. Reson. Imaging 2012;36:39–54. © 2012 Wiley Periodicals, Inc.
The Felicity of Aspectual For‐Phrases – Part 1: Homogeneity
Authors: Landman Fred , Rothstein Susan 
Published: February 2012

AbstractThis paper is the first in a series of two papers presenting recent developments concerning the interaction between aspectual classes of predicates and the semantics of aspectual for‐phrases. Aspectual for‐phrases can felicitously modify stative and activity predicates, but not (basic) accomplishment and achievement predicates. Earlier literature proposed that this is because aspectual for‐phrases must modify predicates which are homogeneous– meaning that the predicate spreads appropriately to subintervals – and it proposed a notion of homogeneity which is appropriate for stative predicates. We argue in this first paper that neither the earlier literature, nor later proposals have managed to come up with an adequate account of the felicity of aspectual for‐phrases with eventive predicates, and that, in particular, accomplishment and achievement predicates with bare arguments and iterative constructions remain challenges that these accounts cannot properly meet. We show that the problem lies in the notion of homogeneity for eventive predicates: the semantic tradition has provided us with static notions of homogeneity – insensitive to the arrow of time – but what is needed is a dynamic notion.
Integrated phased‐array switches for large‐scale photonic routing on chip
Authors: Soganci I.M. , Tanemura T. , Nakano Y. 
Published: February 2012

AbstractIntegrated phased‐array optical switches, having a high port‐count scalability and broad spectral coverage, can potentially be used as building blocks of large‐scale optical routers. In this article, recent works on monolithically integrated InP phased‐array switches and their applications to optical packet switching (OPS) are reviewed. After describing the theory of integrated phased‐array switches, experimental results on a single‐stage 1 × 16 switch, which features wavelength‐independent nanosecond switching characteristics, are presented. A series of OPS experiments, employing high‐bit‐rate optical packets with different modulation formats and a tunable optical buffering experiment are presented as potential applications of these switches. Finally, a large‐scale monolithic switch with as many as 100 ports is realized on a single photonic integrated circuit by cascading the phased‐array switches.
Electrical, Thermal, and Mechanical Characterization of Poly(propylene)/Carbon Nanotube/Clay Hybrid Composite Materials
Authors: Palza Humberto , Reznik Boris , Wilhelm Manfred , Arias Oscar , Vargas Alejandro 
Published: February 2012

AbstractA set of hybrid composite materials based on a PP matrix with multiwalled CNTs and clay particles is prepared and characterized. The incorporation of clay particles into a percolated composite with 3 wt% CNT disrupts the percolation, decreasing dramatically the electrical conductivity. As expected for layered fillers, PP/CNT/clay hybrid composite materials and PP/clay composites display increases as high as 100 °C in the temperature for the maximum rate of weight loss. Surprisingly, these temperatures are just slightly higher than those of PP/CNT composites. PP/CNT composites display viscosities that are considerably lower than those of PP/clay composites. A synergistic effect of both fillers is observed in the viscoelastic response of PP/CNT/clay materials.magnified image
Silencing of tumor suppressor genes RASSF1A, SLIT2, and WIF1 by promoter hypermethylation in hereditary breast cancer
Authors: Alvarez Carolina , Tapia Teresa , Cornejo Valeria , Fernandez Wanda , Muñoz Alex , Camus Mauricio , Alvarez Manuel , Devoto Luigi , Carvallo Pilar 
Published: February 2012

AbstractPromoter hypermethylation is gaining strength as one of the main mechanisms through which tumor suppressor genes are silenced during tumor progression. Three tumor suppressor genes are frequently found methylated in their promoter, in concordance with absence of expression, RASSF1A, SLIT2, and WIF1. In addition, a previous array‐CGH analysis from our group showed that these genes are found in deleted genomic regions observed in hereditary breast cancer tumors. In the present work we analyzed the methylation status of these three tumor suppressor gene promoters in 47 hereditary breast cancer tumors. Promoter methylation status analysis of hereditary breast tumors revealed high methylation frequencies for the three genes (67% RASSF1A, 80% SLIT2, and 72% WIF1). Additionally, the presence of methylated PCR products was associated with absence of protein expression for the three genes and statistically significant for RASSF1A and WIF1. Interestingly, methylation of all the three genes was found in 4 out of 6 grade I invasive ductal carcinoma tumors. Association between RASSF1A methylation and DCIS tumors was found. These results suggest that silencing of these tumor suppressor genes is an early event in hereditary breast cancer, and could be a marker for pre‐malignant phenotypes. © 2012 Wiley Periodicals, Inc.
The association between Mediterranean diet adherence and Parkinson's disease
Authors: Alcalay Roy N. , Gu Yian , Mejia‐Santana Helen , Cote Lucien , Marder Karen S. , Scarmeas Nikolaos 
Published: February 2012

AbstractBackground:Recent studies have demonstrated an association between a Mediterranean‐type diet and Alzheimer's risk. We assessed the association between Mediterranean‐type diet adherence and Parkinson's disease (PD) status.Methods:Two hundred and fifty‐seven PD participants and 198 controls completed the Willett semiquantitative questionnaire that quantifies diet during the past year. Scores were calculated using a 9‐point scale; higher scores indicated greater adherence to the Mediterranean‐type diet. Logistic regression models were used to assess the association between PD status and Mediterranean‐type diet, adjusting for caloric intake, age, sex, education, and ethnicity. Adjusted linear regression models were used to examine the association between Mediterranean‐type diet adherence and PD age at onset.Results:Higher Mediterranean‐type diet adherence was associated with reduced odds for PD after adjustment for all covariates (OR, 0.86; 95% CI, 0.77–0.97; P = .010). Lower Mediterranean‐type diet score was associated with earlier PD age at onset (β = 1.09; P = .006).Conclusions:PD patients adhere less than controls to a Mediterranean‐type diet. Dietary behavior may be associated with age at onset. © 2012 Movement Disorder Society
Comparison of enrollees and decliners of Parkinson disease sham surgery trials
Authors: Kim Scott Y.H. , Wilson Renee M. , Kim H. Myra , Holloway Robert G. , De Vries Raymond G. , Frank Samuel A. , Kieburtz Karl 
Published: February 2012

AbstractConcerns have been raised that persons with serious illnesses participating in high‐risk research, such as PD patients in sham surgery trials, have unrealistic expectations and are vulnerable to exploitation. A comparison of enrollees and decliners of such research may provide insights about the adequacy of decision making by potential subjects. We compared 61 enrollees and 10 decliners of two phase II neurosurgical intervention (i.e., cellular and gene transfer) trials for PD regarding their demographic and clinical status, perceptions and attitudes regarding research risks, potential direct benefit, and societal benefit, and perspectives on the various potential reasons for and against participation. In addition to bivariate analyses, a logistic regression model examined variables regarding risks and benefits as predictors of participation status. Enrollees perceived lower risk of harm while tolerating higher risk of harm and were more action oriented, but did not have more advanced disease. Both groups rated hope for benefit as a strong reason to participate, whereas the fact that the study's purpose was not solely to benefit them was rated as “not a reason” against participation. Hope for benefit and altruism were rated higher than expectation of benefit as reasons in favor of participation for both groups. Enrollees and decliners are different in their views and attitudes toward risk. Although both are attracted to research because of hopes of personal benefit, this hope is clearly distinguishable from an expectation of benefit and does not imply a failure to understand the main purpose of research. © 2012 Movement Disorder Society
The effect of oxygen flow rates on magnetic and high‐frequency characteristics of Fe‐Hf‐O films
Authors: Wang Zong‐Shenq , Lai Yuan‐Tai , Duh Jenq‐Gong 
Published: February 2012

AbstractThis study aimed to investigate the influence of oxygen flow rate on magnetic and high‐frequency properties of as‐deposited FeHfO thin films, which were fabricated by DC reactive magnetron sputtering in an Ar + O2 atmosphere. These films exhibited mixed phases of α‐Fe nanograins and amorphous HfO2 phase, showing nanocrystalline structure and soft magnetic properties. The dispersion character of FeHfO films changed from relaxation‐type to resonance‐type when the oxygen flow rate varied from 1.0 to 1.2 sccm. Furthermore, the Fe58.8Hf13.1O28.1 film with the optimum O2 flow rate of 1.2 sccm exhibited high saturation magnetization of 10.6 kG, a high resistivity of 258 µΩ cm, a real component of permeability (µ′) of 250 up to 1 GHz and a high ferromagnetic resonance frequency of 2.5 GHz. It is expected that this film should be promising for practical applications as a high‐frequency ferromagnetic material.
An XPS analysis of the oxide surface layers formed on a friction stir processed magnesium alloy
Authors: Cristóbal M. J. , Gesto D. , Miniño P. , Pena G. , Rey P. , Verdera D. 
Published: February 2012

Friction stir processing (FSP) is a promising technique for improving plasticity of magnesium alloys through the homogenization and grain refinement of their structure. In this study, a magnesium alloy AZ31 has been processed by FSP to achieve an ultrafine grain size structure (700 nm), and the oxide films formed spontaneously on the surface of the FSP zone are compared with those on the unprocessed material. Chemical composition of the oxide films are analyzed by XPS.The natural oxide films, close to 36 nm, can be described as a structure of (MgO)/Mg(OH)2 with the outermost surface mainly formed by Mg(OH)2/MgCO3. About 5–7 at.% of Al3+ is distributed through the oxide layer. Segregated zinc enrichment (Zn 2p3/2 at 1021.4 eV) at the interface oxide/metal is found. The FSP samples show higher carbonatation degree at the surface and a lower segregated zinc percentage at the interface oxide/metal. Copyright © 2012 John Wiley & Sons, Ltd.
Identification of a Semiparametric Item Response Model
Authors: Peress Michael 
Published: February 2012

AbstractWe consider the identification of a semiparametric multidimensional fixed effects item response model. Item response models are typically estimated under parametric assumptions about the shape of the item characteristic curves (ICCs), and existing results suggest difficulties in recovering the distribution of individual characteristics under nonparametric assumptions. We show that if the shape of the ICCs are unrestricted, but the shape is common across individuals and items, the individual characteristics are identified. If the shape of the ICCs are allowed to differ over items, the individual characteristics are identified in the multidimensional linear compensatory case but only identified up to a monotonic transformation in the unidimensional case. Our results suggest the development of two new semiparametric estimators for the item response model.
Characterization of Iranian Virgin Olive Oil from the Roodbar Region: A Study on Zard, Mari and Phishomi
Authors: Kharazi Sepideh Haghighat , Kenari Reza Esmaeilzadeh , Amiri Zeinab Raftani , Azizkhani Maryam 
Published: February 2012

AbstractThe aim of this study is to describe the physicochemical properties of Iranian virgin olive oil (Zard, Mari and Phishomi) cultivated in Roodbar, Gilan. There were statistically significant differences for most of the parameters (P < 0.05). The acidity and peroxide value were in the limit established for classification as extra virgin olive oil. The oil of Zard had the highest amount of monounsaturated fatty acids followed by Mari and Phishomi oils. Mari oil proved to have the minimum value of polyunsaturated fatty acids, and the highest amount of phenolic compounds and oxidative stability. The oil of Phishomi had the maximum amount of chlorophylls and carotenoids and therefore it had the highest color index. There were no significant differences between the cultivars regarding the refractive index (1.469 at 20 °C for all three cultivars). According to the high content of monounsaturated fatty acids, the lowest amounts of polyunsaturated fatty acids and the highest amounts of phenolic compounds as well as the results of a Rancimat assay, it seems that the quality of the oil of Mari cultivar is better than Zard and Phishomi oils and is also more stable against oxidation.
Wood Adhesives Based on Alkaline Extracts from Wastewater Biosolids and Mustard Protein
Authors: García‐Becerra Flor Y. , Acosta Edgar J. , Grant Allen D. 
Published: February 2012

AbstractThis work reports on the dry adhesion strength of wood adhesives formulated with fractions of an alkaline extract obtained from wastewater activated sludge, a renewable and abundant resource. The extract was fractionated and desalted using ultrafiltration techniques. The effect of molecular weight and composition (protein and carbohydrate content) on the extract's adhesion strength was assessed, as well as the effect of crosslinking using glutaraldehyde. The dry adhesion strength of adhesives formulated with soluble mustard seed protein isolate, a protein‐rich alkaline extract, is also reported. In the presence of glutaraldehyde, an extract fraction with high protein content and low salt and hydroxide content showed adhesion strength close to that of the mustard protein adhesive and a commercial wood adhesive. It was further determined that the adhesion strength of the extract and its fractions was strongly correlated with their protein content.
Evaluation of Agronomic and Seed Characteristics in Elevated Oleic Acid Soybean Lines in the South‐Eastern US
Authors: Fallen Benjamin D. , Rainey Katy , Sams Carl E. , Kopsell Dean A. , Pantalone Vincent R. 
Published: February 2012

AbstractIncreasing oleic acid, a monounsaturated fatty acid, is reported to strike the best balance between cold flow properties and oxidative stability in soybean seed oil to enhance biodiesel and produce a better burning fuel. In addition, it is important that elevated oleic acid soybeans have the agronomic traits of local cultivars and maintain oleic acid stability across environments. Research was conducted in 2007–2008 to evaluate six Roundup Ready® soybean recombinant inbred lines exhibiting enhanced levels of oleic acid. The six elevated oleic lines averaged a 55% increase in oleic acid and a 43% decrease in linolenic acid over the two commercial cultivars (AG3906 and AG4103). Some elevated oleic acid genotypes fulfilled the linear regression definition of a stable genotype. TN03‐93RR was the best genotype because of its oleic acid content (397 g kg−1) and desirable regression estimates for stability. Iodine value (IV), peroxide value (PV), and induction period (IP) were used to evaluate the fuel properties of the two lines with the highest oleic acid content and the two commercial cultivars. The elevated oleic acid lines had significantly better IP, PV and IV for better biodiesel properties and oxidative stability than the two commercial cultivars.