bluuebunny/crossref_metadata_2025_split huggingface dataset:
An efficient approach of secure group association management in densely deployed heterogeneous distributed sensor network
Authors: Pathan Al‐Sakib Khan , Monowar Muhammad Mostafa , Jiang Jinfang , Shu Lei , Han Guangjie 
Published: December 2010

AbstractA heterogeneous distributed sensor network (HDSN) is a type of distributed sensor network where sensors with different deployment groups and different functional types participate at the same time. In other words, the sensors are divided into different deployment groups according to different types of data transmissions, but they cooperate with each other within and out of their respective groups. However, in traditional heterogeneous sensor networks, the classification is based on transmission range, energy level, computation ability, and sensing range. Taking this model into account, we propose a secure group association authentication mechanism using one‐way accumulator which ensures that: before collaborating for a particular task, any pair of nodes in the same deployment group can verify the legitimacy of group association of each other. Secure addition and deletion of sensors are also supported in this approach. In addition, a policy‐based sensor addition procedure is also suggested. For secure handling of disconnected nodes of a group, we use an efficient pairwise key derivation scheme to resist any adversary's attempt. Along with proposing our mechanism, we also discuss the characteristics of HDSN, its scopes, applicability, future, and challenges. The efficiency of our security management approach is also demonstrated with performance evaluation and analysis. Copyright © 2010 John Wiley & Sons, Ltd.
Generating certification authority authenticated public keys inad hocnetworks
Authors: Kounga G. , Mitchell C. J. , Walter T. 
Published: December 2010

ABSTRACTIn anad hocnetwork, nodes may face the need to generate new public keys. To be verifiably authentic, these newly generated public keys need to be certified. However, because of the absence of a permanent communication infrastructure, a certification authority (CA) that can issue certificates may not always be reachable. The downside is that secure communication channels cannot be established. Previously proposed solutions do not guarantee that identities contained in certificates are valid or, when they do, they rely on neighbors to validate user‐key bindings. However, there is no guarantee that nodes that are known in advance will always be present in the network. Therefore, neighbors are not always able to verify a node's identity before certificate issuance. In this paper we define a scheme that permits nodes to generate, on‐demand, and independently of any third entity, public keys that can be authenticated with the aid of a unique certificate, issued by a CA at initialization. This certificate binds a valid identity to a hash code. We then extend this scheme to a solution permitting certificates to be generated, on‐demand, and independently of any third entity, that can be authenticated with a unique signature generated by a CA. Finally we solve the problem of updated revocation information. Copyright © 2010 John Wiley & Sons, Ltd.
TEM and HRTEM Evidence for the Role of Ligands in the Formation of Shape‐Controlled Platinum Nanoparticles
Authors: Axet M. Rosa , Philippot Karine , Chaudret Bruno , Cabié Martiane , Giorgio Suzanne , Henry Claude R. 
Published: December 2010

AbstractThe morphology of platinum nanoparticles synthesized using an organometallic approach from PtMe2(C8H12) is influenced by the nature of the ligands used as stabilizing agents. The use of long alkyl chain amines leads to the formation of multipodal nanoparticles that transform into compact nano‐objects, adopting cubic, truncated cubic, or cuboctahedral shapes. In contrast, the use of diamine ligands allows the growth of compact (111) arrowlike faces, forming polycrystalline nanoparticles of an overall desert‐rose aspect. Different reaction parameters are studied ([ligand]/[metal] ratio, temperature, solvent identity) in order to optimize the various shapes.
Nanomaterials Can Dynamically Steer Cell Responses to Biological Ligands
Authors: Sharma Ram I. , Schwarzbauer Jean E. , Moghe Prabhas V. 
Published: December 2010

AbstractTraditional tissue regeneration approaches to activate cell behaviors on biomaterials rely on the use of extracellular‐matrix‐based or soluble growth‐factor cues. In this article, a novel approach is highlighted to dynamically steer cellular phenomena such as cell motility based on nanoscale substratum features of biological ligands. Albumin‐derived nanocarriers (ANCs) with variable nanoscale‐size features are functionalized with fibronectin III9‐10 matrix ligands, and their effects on primary human keratinocyte activation are investigated. The presentation of fibronectin fragments from ANCs significantly enhances cell migration as compared to free ligands at equivalent concentrations. Notably, cell migration is influenced by the size of the underlying ANCs even for variably sized ANCs covered in comparable levels of fibronectin fragment. For equivalent ligand concentrations, cell migration on the smaller‐sized ANCs (30 and 50 nm) is significantly enhanced as compared to that on larger‐sized ANCs (75 and 100 nm). In contrast, the enhancement of cell migration on nanocarriers is abolished by the use of immobilized, biofunctionalized ANCs, indicating that “dynamic” nanocarrier internalization events underlie the role of nanocarrier geometry on the differential regulation of cell migration kinetics. Uptake studies using fluorescent ANCs indicate that larger‐sized ANCs cause delayed endocytic kinetics and hence could present barriers for internalization during the cell adhesion and motility processes. Motile cells exhibit diminished migration upon exposure to clathrin inhibitors, but not caveolin inhibitors, suggesting the role of clathrin‐mediated endocytosis in facilitating cell migratory responsiveness to the nanocarriers. Overall, a monotonic relationship is found between the nanocarrier cytointernalization rate and the cell migration rate, suggesting the possibility of designing biointerfacial features for the dynamic control of cell migration. Thus, the functionalization of a mobile nanocarrier by a biorelevant ligand can be used to sensitize cellular motility activation to the adhesion ligands, and such nanocarrier interfaces can dynamically attune cell migration kinetics by modulating the uptake of the ligand–nanocarrier complex via nanocarrier size.
Effects of Gold Nanorod Concentration on the Depth‐Related Temperature Increase During Hyperthermic Ablation
Authors: Jang Boseung , Kim Yu Shin , Choi Yongdoo 
Published: December 2010

AbstractThe photothermal properties of gold nanorods (GNRs) provide an opportunity for the clinical application of highly efficient and tumor‐specific photothermal therapy. For the effective hyperthermic ablation of tumor tissue using GNRs, it is essential to maintain a homogeneous therapeutic temperature in the target tissue during treatment. This study investigates whether the concentration of GNRs affects the distribution of the temperature increase during hyperthermal therapy. The investigation is conducted using polyacrylamide phantoms containing varying amounts of GNRs. In 0.1, 0.25, and 0.5 nM GNR‐suspended phantoms, the change in temperature is relatively uniform along the depth of each phantom during laser irradiation at 2 W cm−2. In 1.0, 2.0, and 5.0 nM GNR‐suspended phantoms, the rates of temperature increase in the deep regions of the phantoms decrease with increasing GNR concentration. At a laser irradiation of 5 W cm−2, the temperature of the GNR‐suspended phantoms increases at a faster rate, whereas the range of GNR concentrations for maintaining the homogeneity of the temperature increase is not affected. This suggests that the concentration of GNRs is the major determinant of the depth‐related temperature increase during hyperthermic ablation. Therefore, prior to the clinical application of hyperthermic ablation using GNRs, the concentration of GNRs has to be optimized to ensure a homogeneous distribution of therapeutic temperature in the targeted tissue.
Sleep disturbance associated with an enhanced orexinergic system induced by chronic treatment with paroxetine and milnacipran
Authors: Rahmadi Mahardian , Narita Minoru , Yamashita Akira , Imai Satoshi , Kuzumaki Naoko , Suzuki Tsutomu 
Published: December 2010

AbstractRecent reports have shown that acute or chronic treatment with selective serotonin reuptake inhibitor (SSRI) or serotonin‐noradrenaline reuptake inhibitor (SNRI) causes unpleasant side effects in patients. In the present study, through the use of electroencephalography (EEG) and electromyography (EMG), we found that chronic treatment with the SSRI paroxetine or the SNRI milnacipran significantly induced sleep disturbance, which was characterized by an increase in the total wake time and decreased total nonrapid eye movement (NREM) sleep. Furthermore, RT‐PCR analysis demonstrated that chronic treatment with paroxetine or milnacipran significantly increased the mRNA levels of orexin 1 receptor and orexin 2 receptor in the hypothalamus and of histamine 1 receptor and histidine decarboxylase in the frontal cortex of mice. The present findings suggest that chronic treatment with either paroxetine or milnacipran causes sleep disturbance associated with an increase in orexinergic transmission in the hypothalamus and histaminergic transmission in the frontal cortex. Although further studies are needed, these imbalances in the orexinergic and histaminergic systems may be, at least in part, responsible for the pathogenesis of sleep disturbance induced by chronic treatment with SSRI or SNRI in rodents. Synapse, 2011. © 2010 Wiley‐Liss, Inc.
Dietary patterns during pregnancy and the risk of postpartum depression in Japan: the Osaka Maternal and Child Health Study
Authors: Okubo Hitomi , Miyake Yoshihiro , Sasaki Satoshi , Tanaka Keiko , Murakami Kentaro , Hirota Yoshio ,   the Osaka Maternal and Child Health Study Group
Published: December 2010

Although several nutrients and foods are suggested to be preventive against postpartum depression, all previous studies have primarily focused on single nutrients or foods. In contrast, studies on dietary patterns, namely the measurement of overall diet by considering the cumulative effects of nutrient, may provide new insights into the influence of diet on postpartum depression. We prospectively examined the association between dietary patterns during pregnancy and the risk of postpartum depression among 865 Japanese women. Diet was assessed with a validated, self-administered diet history questionnaire. Dietary patterns from thirty-three predefined food groups (energy-adjusted food (g/d)) were extracted by factor analysis. Postpartum depression was defined as present when the subjects had an Edinburgh Postnatal Depression Scale score of ≥ 9 at 2–9 months postpartum. A total of 121 women (14·0 %) were classified as having postpartum depression. Three dietary patterns were identified: ‘Healthy’, ‘Western’ and ‘Japanese’ patterns. After adjustment for potential confounders, neither the ‘Healthy’ nor the ‘Japanese’ pattern was related to the risk of postpartum depression. Compared with the first quartile of the ‘Western’ pattern, only the second quartile was independently related to a decreased risk of postpartum depression (multivariate OR 0·52, 95 % CI 0·30, 0·93), although no evident exposure–response associations were observed (P for trend = 0·36). The present study failed to substantiate clear associations between dietary patterns and the risk of postpartum depression. Further studies with more accurate measurements are warranted to confirm the relationship between dietary patterns and the risk of postpartum depression.
bvca(Σ, X) REVISITED
Authors: FERRANDO J. C. 
Published: December 2010

AbstractAssuming that (Ω, Σ) is a measurable space and (X) is a Banach space we provide a quite general sufficient condition on (X) for bvca(Σ, X) (the Banach space of all X-valued countably additive measures of bounded variation equipped with the variation norm) to contain a copy of c0 if and only if X does. Some well-known results on this topic are straightforward consequences of our main theorem.
Upskilling the Workers will not Upskill the Work. Why the Dominant Economic Framework Limits Child Poverty Reduction in the UK
Authors: LEWIS PAUL 
Published: December 2010

AbstractThis paper assesses the policy consensus that exists amongst political parties in the UK in their shared ambition to eradicate child poverty by 2020. Three major pillars of policy – work intensification, re-distribution and skill upgrading – are challenged in terms of their likely success in reducing child poverty. In particular, the assumption that upgrading skills will raise earnings is challenged by examining the changing patterns of work in a selection of developed economies since the 1970s. This paper argues that addressing relative poverty requires an alternative theoretical approach to the neoclassical economics that currently underpins policy. Different national levels of earnings dispersion suggest that the role of institutions and culture in determining market outcomes deserves at least as much attention as the supply of skills.
From Work to Consumption. Transatlantic Visions of Individuality in Modern Mass Society
Authors: WIRSCHING ANDREAS 
Published: December 2010

AbstractThis essay deals with the ambiguous and contradictory relationship between labour, consumption and individuality in modern mass culture. This relationship has been conceptualised rather differently in American and European visions of individuality. In recent years, the long-lasting tradition of European (and especially German) scepticism towards the consumer society, which was nourished by conservative, (neo)liberal and Marxist influences, has retreated in favour of a more general acceptance of modern consumerism. While labour has not been replaced as the most important means of economic and cultural participation, the social construction of personal individuality is seen to take place through an ever-increasing multitude of means of consumption. The article analyses this profound process of cultural change and at the same time reflects upon the opportunities and limits of the current scholarly paradigm concerning the consumer society.
Jürgen Kuczynski and the Search for a (Non-Existent) Western Spy Ring in the East German Communist Party in 1953
Authors: STIBBE MATTHEW 
Published: December 2010

AbstractJürgen Kuczynski, the East German Marxist intellectual and economic historian, is best known for his numerous publications on labour history. Far less has been written about his role as a leading figure in the German Communist Party in Britain between 1936 and 1944, and his work for the US Strategic Bombing Survey in 1944–5, activities which later came back to haunt him when he was the subject of a major inquiry launched by the Central Party Control Commission in 1953. Using newly available documents in London and Berlin, this article examines the investigation into Kuczynski as a case study for the inter-relationship between party purges, spy scares and the manipulation of individual biographies during one of the most volatile periods of the cold war.
Viability and apoptosis in spermatozoa of transgenic rabbits
Authors: Chrenek P. , Makarevich A.V. , Simon M. 
Published: December 2010

SummaryThe aim of our study was to compare the viability of sperm cells from transgenic (mWAP-hFVIII gene) or non-transgenic (normal) rabbit males as assessed by viability (SYBR-14/PI) and apoptosis (annexin V) tests. These results were evaluated using female conception rates following insemination with the respective sperm samples. No significant differences were found in concentration and motility between transgenic and non-transgenic spermatozoa. Spermatozoa from both transgenic (63.05 ± 20.05%) or non-transgenic (65.75 ± 22.15%) males, stained with SYBR-14 (green), were found to be morphologically normal. In both groups, the highest proportion of annexin V-positive sperm staining was found in the post-acrosomal part of the sperm head (8.66 and 27.53%). The percentage of sperm that stained with SYBR-14/PI or with annexin V/DAPI was correlated with liveborn in transgenic rabbits (R2 = 0.6118 and R2 = 0.2187, respectively) or non-transgenic rabbits (R2 = 0.671 and R2 = 0.3579, respectively). These data indicate that there was no difference in the viability of rabbit transgenic and non-transgenic spermatozoa when determined by both fluorescence assays.
Analysis of Cancer Omics Data In A Semantic Web Framework
Authors: Holford Matthew , McCusker James , Cheung Kei , Krauthammer Michael 
Published: December 2010

AbstractOur work concerns the elucidation of the cancer (epi)genome, transcriptome and proteome to better understand the complex interplay between a cancel cell's molecular state and its response to anti-cancer therapy. To study the problem, we have previously focused on data warehousing technologies and statistical data integration. In this paper, we present recent work on extending our analytical capabilities using Semantic Web technology. A key new component presented here is a SPARQL endpoint to our existing data warehouse. This endpoint allows the merging of observed quantitative data with existing data from semantic knowledge sources such as Gene Ontology (GO). We show how such variegated quantitative and functional data can be integrated and accessed in a universal manner using Semantic Web tools. We also demonstrate how Description Lobic (DL) reasoning can be used to infer previously unstated conclusions from existing knowledge bases. As proof of concept, we illustrate the ability of our setup to answer complex queries on resistance of cancer cells to Decitabine, a demethylating agent.
Future dryness in the southwest US and the hydrology of the early 21st century drought
Authors: Cayan Daniel R. , Das Tapash , Pierce David W. , Barnett Tim P. , Tyree Mary , Gershunov Alexander 
Published: December 2010

Recently the Southwest has experienced a spate of dryness, which presents a challenge to the sustainability of current water use by human and natural systems in the region. In the Colorado River Basin, the early 21st century drought has been the most extreme in over a century of Colorado River flows, and might occur in any given century with probability of only 60%. However, hydrological model runs from downscaled Intergovernmental Panel on Climate Change Fourth Assessment climate change simulations suggest that the region is likely to become drier and experience more severe droughts than this. In the latter half of the 21st century the models produced considerably greater drought activity, particularly in the Colorado River Basin, as judged from soil moisture anomalies and other hydrological measures. As in the historical record, most of the simulated extreme droughts build up and persist over many years. Durations of depleted soil moisture over the historical record ranged from 4 to 10 years, but in the 21st century simulations, some of the dry events persisted for 12 years or more. Summers during the observed early 21st century drought were remarkably warm, a feature also evident in many simulated droughts of the 21st century. These severe future droughts are aggravated by enhanced, globally warmed temperatures that reduce spring snowpack and late spring and summer soil moisture. As the climate continues to warm and soil moisture deficits accumulate beyond historical levels, the model simulations suggest that sustaining water supplies in parts of the Southwest will be a challenge.
Photoinduced electron transfer from semiconductor quantum dots to metal oxide nanoparticles
Authors: Tvrdy Kevin , Frantsuzov Pavel A. , Kamat Prashant V. 
Published: December 2010

Quantum dot-metal oxide junctions are an integral part of next-generation solar cells, light emitting diodes, and nanostructured electronic arrays. Here we present a comprehensive examination of electron transfer at these junctions, using a series of CdSe quantum dot donors (sizes 2.8, 3.3, 4.0, and 4.2 nm in diameter) and metal oxide nanoparticle acceptors (SnO2, TiO2, and ZnO). Apparent electron transfer rate constants showed strong dependence on change in system free energy, exhibiting a sharp rise at small driving forces followed by a modest rise further away from the characteristic reorganization energy. The observed trend mimics the predicted behavior of electron transfer from a single quantum state to a continuum of electron accepting states, such as those present in the conduction band of a metal oxide nanoparticle. In contrast with dye-sensitized metal oxide electron transfer studies, our systems did not exhibit unthermalized hot-electron injection due to relatively large ratios of electron cooling rate to electron transfer rate. To investigate the implications of these findings in photovoltaic cells, quantum dot-metal oxide working electrodes were constructed in an identical fashion to the films used for the electron transfer portion of the study. Interestingly, the films which exhibited the fastest electron transfer rates (SnO2) were not the same as those which showed the highest photocurrent (TiO2). These findings suggest that, in addition to electron transfer at the quantum dot-metal oxide interface, other electron transfer reactions play key roles in the determination of overall device efficiency.
Tree management.
Authors: Paull R. E. , Duarte O. 
Published: December 2010

Abstract

This chapter focuses on the sexual and asexual propagation and differences between sexually and asexually propagated fruit trees, nursery tree management and planting, pruning, irrigation, fertilizer application and pest and disease management strategies. The girdling and scoring, leaf fall, use of plant growth regulators and other stimulants, pollination and temporary shade, shelter and bagging of fruit trees are also discussed.
Postharvest technology.
Authors: Paull R. E. , Duarte O. 
Published: December 2010

Abstract

This chapter focuses on the losses acquired during postharvest handling, general characteristics, postharvest physiology, storage potential, postharvest handling, insect disinfestation, storage diseases, food safety and ripening of tropical fruits. The requirements for the postharvest handling of organically produced fruits and the logistics of the supply and marketing chain are also discussed.
Annonas: cherimoya, atemoya and sweetsop.
Authors: Paull R. E. , Duarte O. 
Published: December 2010

Abstract

This chapter focuses on the botany (family, important genera and species and area of origin and distribution) of the cherimoyas, atemoyas and sweetsops and the effects of soil type, rainfall, temperature, light and photoperiod and wind factors on their ecology. The general characteristics of the flowers, pollination and fruit set, use of plant growth regulators for fruit setting and fruits are discussed. The cultivar development and cultural practices, such as secual and asexual propagation, rootstocks, field preparation, transplanting and spacing, irrigation practices, pruning, fertilizer application and pest, disease and weed management are highlighted and the harvesting and postharvest handling and utilization of fruits are also pointed out.
Litchi and longan.
Authors: Paull R. E. , Duarte O. 
Published: December 2010

Abstract

This chapter focuses on the taxonomy, origin and distribution, effects of climatic factors on the ecology, morphology and physiology of litchi and longan. The cultivar development, cultural practices for propagation, cultivation, irrigation, pruning, ferilizer application and pest, weed and disease management are discussed. The harvesting and postharvest handling of fruits and their utilization are also highlighted.