bluuebunny/crossref_metadata_2025 huggingface dataset:
A Generic Two-Phase Stochastic Variable Neighborhood Approach for Effectively Solving the Nurse Rostering Problem
Authors: Solos Ioannis , Tassopoulos Ioannis , Beligiannis Grigorios
Published: May 2013

In this contribution, a generic two-phase stochastic variable neighborhood approach is applied to nurse rostering problems. The proposed algorithm is used for creating feasible and efficient nurse rosters for many different nurse rostering cases. In order to demonstrate the efficiency and generic applicability of the proposed approach, experiments with real-world input data coming from many different nurse rostering cases have been conducted. The nurse rostering instances used have significant differences in nature, structure, philosophy and the type of hard and soft constraints. Computational results show that the proposed algorithm performs better than six different existing approaches applied to the same nurse rostering input instances using the same evaluation criteria. In addition, in all cases, it manages to reach the best-known fitness achieved in the literature, and in one case, it manages to beat the best-known fitness achieved till now.
Photocatalytic Degradation of Acridine Orange over NaBiO3 Driven by Visible Light Irradiation
Authors: Lu Chung-Shin , Chen Chiing-Chang , Huang Ling-Kuen , Tsai Peir-An , Lai Hsiao-Fang
Published: May 2013

The photocatalytic degradation of acridine orange (AO) dye by NaBiO3 photocatalyst under visible light irradiation was investigated systematically. The NaBiO3 photocatalyst exhibited a higher photocatalytic activity compared to the P25 photocatalyst. After 160 min of photocatalytic reaction, the degradation rate of AO could reach to 99% in appropriate conditions. Factors, such as catalyst dosage, solution pH, initial AO concentration and the presence of anions, were found to influence the degradation rate. To scrutinize the mechanistic details of the dye photodegradation, the intermediates of the processes were separated, identified and characterized by the HPLC-ESI-MS technique. The analytical results indicated that the N-de-methylation degradation of AO dye took place in a stepwise manner to yield mono-, di-, tri- and tetra-N-de-methylated AO species generated during the processes. The probable photodegradation pathways were proposed and discussed.
The Demon in a Vacuum Tube
Authors: D'Abramo Germano
Published: May 2013

In the present paper, several issues concerning the second law of thermodynamics, Maxwell’s demon and Landauer’s principle are dealt with. I argue that if the demon and the system on which it operates without dissipation of external energy are made of atoms and molecules (gas, liquid or solid) in thermal equilibrium (whose behaviour is described by a canonical distribution), then the unavoidable reason why the demon cannot successfully operate resides in the ubiquity of thermal fluctuations and friction. Landauer’s principle appears to be unnecessary. I also suggest that if the behaviour of the demon and the system on which it acts is not always describable by a canonical distribution, as would happen for instance with the ballistic motion of electrons at early stages of thermionic emission, then a successful working demon cannot be ruled out a priori. A critical review of two recent experiments on thermionic emission Maxwell’s demons is also given.
Obesity-Associated Oxidative Stress: Strategies Finalized to Improve Redox State
Authors: Savini Isabella , Catani Maria , Evangelista Daniela , Gasperi Valeria , Avigliano Luciana
Published: May 2013

Obesity represents a major risk factor for a plethora of severe diseases, including diabetes, cardiovascular disease, non-alcoholic fatty liver disease, and cancer. It is often accompanied by an increased risk of mortality and, in the case of non-fatal health problems, the quality of life is impaired because of associated conditions, including sleep apnea, respiratory problems, osteoarthritis, and infertility. Recent evidence suggests that oxidative stress may be the mechanistic link between obesity and related complications. In obese patients, antioxidant defenses are lower than normal weight counterparts and their levels inversely correlate with central adiposity; obesity is also characterized by enhanced levels of reactive oxygen or nitrogen species. Inadequacy of antioxidant defenses probably relies on different factors: obese individuals may have a lower intake of antioxidant- and phytochemical-rich foods, such as fruits, vegetables, and legumes; otherwise, consumption of antioxidant nutrients is normal, but obese individuals may have an increased utilization of these molecules, likewise to that reported in diabetic patients and smokers. Also inadequate physical activity may account for a decreased antioxidant state. In this review, we describe current concepts in the meaning of obesity as a state of chronic oxidative stress and the potential interventions to improve redox balance.
Nanoparticle-Based Systems for T1-Weighted Magnetic Resonance Imaging Contrast Agents
Authors: Zhu Derong , Liu Fuyao , Ma Lina , Liu Dianjun , Wang Zhenxin
Published: May 2013

Because magnetic resonance imaging (MRI) contrast agents play a vital role in diagnosing diseases, demand for new MRI contrast agents, with an enhanced sensitivity and advanced functionalities, is very high. During the past decade, various inorganic nanoparticles have been used as MRI contrast agents due to their unique properties, such as large surface area, easy surface functionalization, excellent contrasting effect, and other size-dependent properties. This review provides an overview of recent progress in the development of nanoparticle-based T1-weighted MRI contrast agents. The chemical synthesis of the nanoparticle-based contrast agents and their potential applications were discussed and summarized. In addition, the recent development in nanoparticle-based multimodal contrast agents including T1-weighted MRI/computed X-ray tomography (CT) and T1-weighted MRI/optical were also described, since nanoparticles may curtail the shortcomings of single mode contrast agents in diagnostic and clinical settings by synergistically incorporating functionality.
Use of Okadaic Acid to Identify Relevant Phosphoepitopes in Pathology: A Focus on Neurodegeneration
Authors: Medina Miguel , Avila Jesús , Villanueva Nieves
Published: May 2013

Protein phosphorylation is involved in the regulation of a wide variety of physiological processes and is the result of a balance between protein kinase and phosphatase activities. Biologically active marine derived compounds have been shown to represent an interesting source of novel compounds that could modify that balance. Among them, the marine toxin and tumor promoter, okadaic acid (OA), has been shown as an inhibitor of two of the main cytosolic, broad-specificity protein phosphatases, PP1 and PP2A, thus providing an excellent cell-permeable probe for examining the role of protein phosphorylation, and PP1 and PP2A in particular, in any physiological or pathological process. In the present work, we review the use of okadaic acid to identify specific phosphoepitopes mainly in proteins relevant for neurodegeneration. We will specifically highlight those cases of highly dynamic phosphorylation-dephosphorylation events and the ability of OA to block the high turnover phosphorylation, thus allowing the detection of modified residues that could be otherwise difficult to identify. Finally, its effect on tau hyperhosphorylation and its relevance in neurodegenerative pathologies such as Alzheimer’s disease and related dementia will be discussed.
Outbreak of Diarrhetic Shellfish Poisoning Associated with Mussels, British Columbia, Canada
Authors: Taylor Marsha , McIntyre Lorraine , Ritson Mark , Stone Jason , Bronson Roni , Bitzikos Olga , Rourke Wade , Galanis Eleni , Team Outbreak
Published: May 2013

In 2011, a Diarrhetic Shellfish Poisoning (DSP) outbreak occurred in British Columbia (BC), Canada that was associated with cooked mussel consumption. This is the first reported DSP outbreak in BC. Investigation of ill individuals, traceback of product and laboratory testing for toxins were used in this investigation. Sixty-two illnesses were reported. Public health and food safety investigation identified a common food source and harvest area. Public health and regulatory agencies took actions to recall product and notify the public. Shellfish monitoring program changes were implemented after the outbreak. Improved response and understanding of toxin production will improve management of future DSP outbreaks.
Polyketides from a Marine-Derived Fungus Xylariaceae sp.
Authors: Nong Xu-Hua , Zheng Zhi-Hui , Zhang Xiao-Yong , Lu Xin-Hua , Qi Shu-Hua
Published: May 2013

Eighteen polyketides (1–18) including six citrinin derivatives, two phenol derivatives, one cyclopentenone, two naphthol derivatives, and seven tetralone derivatives were isolated from the culture broth of a marine-derived fungal strain Xylariaceae sp. SCSGAF0086. Five of these compounds (1, 2, 8, 9, and 10) were new, and their structures were determined by spectroscopic methods. Compounds 4, 6, 7, and 17 showed enzyme-inhibitory activities towards several tested enzymes, and 6 and 7 showed strong antifouling activity against Bugula neritina larvae settlement. This is the first time that the antifouling and enzyme-inhibitory activities of these compounds has been reported.
Green Biosynthesis and Characterization of Magnetic Iron Oxide (Fe3O4) Nanoparticles Using Seaweed (Sargassum muticum) Aqueous Extract
Authors: Mahdavi Mahnaz , Namvar Farideh , Ahmad Mansor , Mohamad Rosfarizan
Published: May 2013

The synthesis of nanoparticles has become a matter of great interest in recent times due to their various advantageous properties and applications in a variety of fields. The exploitation of different plant materials for the biosynthesis of nanoparticles is considered a green technology because it does not involve any harmful chemicals. In this study, iron oxide nanoparticles (Fe3O4-NPs) were synthesized using a rapid, single step and completely green biosynthetic method by reduction of ferric chloride solution with brown seaweed (BS, Sargassum muticum) water extract containing sulphated polysaccharides as a main factor which acts as reducing agent and efficient stabilizer. The structural and properties of the Fe3O4-NPs were investigated by X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscopy (FESEM), energy dispersive X-ray fluorescence spectrometry (EDXRF), vibrating sample magnetometry (VSM) and transmission electron microscopy. The average particle diameter as determined by TEM was found to be 18 ± 4 nm. X-ray diffraction showed that the nanoparticles are crystalline in nature, with a cubic shape. The nanoparticles synthesized through this biosynthesis method can potentially useful in various applications.
Anionic Calixarene-Capped Silver Nanoparticles Show Species-Dependent Binding to Serum Albumins
Authors: Tauran Yannick , Brioude Arnaud , Kim Beomjoon , Perret Florent , Coleman Anthony
Published: May 2013

The anionic calixarenes para-sulphonatocalix[4]arene and 1,3-di-Ophosphonatocalix[ 4]arene, have been used to cap silver nanoparticles. The binding of these functional particles with regard to various serum albumins (bovine serum albumin, human serum albumin, porcine serum albumin and sheep serum albumin) has been studied by variable temperature fluorescence spectroscopy. The quenching of the fluorescence of the proteins was shown to vary as a function of the anionic calixarene capping molecule and also as a function of the origin of the serum albumin. It is thus possible to discriminate between the different species.
Different Analytical Approaches in Assessing Antibacterial Activity and the Purity of Commercial Lysozyme Preparations for Dairy Application
Authors: Brasca Milena , Morandi Stefano , Silvetti Tiziana , Rosi Veronica , Cattaneo Stefano , Pellegrino Luisa
Published: May 2013

Hen egg-white lysozyme (LSZ) is currently used in the food industry to limit the proliferation of lactic acid bacteria spoilage in the production of wine and beer, and to inhibit butyric acid fermentation in hard and extra hard cheeses (late blowing) caused by the outgrowth of clostridial spores. The aim of this work was to evaluate how the enzyme activity in commercial preparations correlates to the enzyme concentration and can be affected by the presence of process-related impurities. Different analytical approaches, including turbidimetric assay, SDS-PAGE and HPLC were used to analyse 17 commercial preparations of LSZ marketed in different countries. The HPLC method adopted by ISO allowed the true LSZ concentration to be determined with accuracy. The turbidimetric assay was the most suitable method to evaluate LSZ activity, whereas SDS-PAGE allowed the presence of other egg proteins, which are potential allergens, to be detected. The analytical results showed that the purity of commercially available enzyme preparations can vary significantly, and evidenced the effectiveness of combining different analytical approaches in this type of control.
Venomous Secretions from Marine Snails of the Terebridae Family Target Acetylcholine Receptors
Authors: Kendel Yvonne , Melaun Christian , Kurz Alexander , Nicke Annette , Peigneur Steve , Tytgat Jan , Wunder Cora , Mebs Dietrich , Kauferstein Silke
Published: May 2013

Venoms from cone snails (Conidae) have been extensively studied during the last decades, but those from other members of the suborder Toxoglossa, such as of Terebridae and Turridae superfamilies attracted less interest so far. Here, we report the effects of venom and gland extracts from three species of the superfamily Terebridae. By 2-electrode voltage-clamp technique the gland extracts were tested on Xenopus oocytes expressing nicotinic acetylcholine receptors (nAChRs) of rat neuronal (α3β2, α3β4, α4β2, α4β4, α7) and muscle subtypes (α1β1γδ), and expressing potassium (Kv1.2 and Kv1.3) and sodium channels (Nav1.2, 1.3, 1.4, 1.6). The extracts were shown to exhibit remarkably high inhibitory activities on almost all nAChRs tested, in particular on the α7 subtype suggesting the presence of peptides of the A-superfamily from the venom of Conus species. In contrast, no effects on the potassium and sodium channels tested were observed. The venoms of terebrid snails may offer an additional source of novel biologically active peptides.
Evaluation du fonctionnement familial : état des connaissances
Authors: Pauzé Robert , Petitpas Judith
Published: May 2013

La nécessité d’amorcer une intervention par l’évaluation du fonctionnement familial constitue une pratique incontournable chez les thérapeutes familiaux et les formateurs en thérapie familiale. Afin de soutenir cette étape cruciale de l’intervention, des grilles et des modèles d’évaluation systématique des familles ont été proposés par des cliniciens et des chercheurs au cours des trente dernières années. Le présent article vise, d’une part, à faire état des principales grilles ou modèles d’évaluation recensés et, d’autre part, à identifier et à définir les principales dimensions du fonctionnement familial qui sont à considérer lorsqu’on procède à l’évaluation du fonctionnement d’une famille.
Apports de la recherche familiale dans les troubles du comportement alimentaire de l'enfant et de l'adolescent : acquis, défis et nouvelles perspectives
Authors: Cook-Darzens Solange
Published: May 2013

Cet article cherche à démontrer l’intérêt d’une pratique familiale basée sur les faits ( evidence-based ) dans le champ des troubles du comportement alimentaire (TCA) de l’enfant et de l’adolescent, en proposant dans un premier temps une synthèse critique de la littérature empirique : 1) sur le fonctionnement des familles d’enfants et d’adolescents souffrant de TCA, et 2) sur l’efficacité des thérapies familiales dans le traitement de ces troubles. Les nouvelles lignes directrices ainsi que les lacunes et biais qui en émergent seront soulignés et discutés, et un modèle de pratique clinique, basée sur la recherche scientifique, l’expertise du clinicien et les préférences et motivations du patient ou de la famille sera proposé en fin d’article. Les liens ainsi tissés entre théorie, recherche et pratique clinique, décrivent une démarche dont la pertinence dépasse largement le simple champ des TCA.
Couples homosexuels et familles homoparentales
Authors: D’Amore Salvatore , Miscioscia Marina , Scali Thérèse , Haxhe Stéphanie , Bullens Quentin
Published: May 2013

Les couples et les familles avec partenaires et parents LGBT (lesbiens, gays, bisexuels, transgenres) sont souvent passés sous silence dans l’approche systémique. Ce silence trouve ses racines dans l’hétérocentrisme qui a influencé la définition de couple, de famille et de relations familiales ainsi que de leur « normalité » vs « pathologie ». Qu’on soit chercheur ou clinicien, il est intéressant de prendre en considération l’impact de l’homophobie, de l’hétérosexisme, de l’hétéronormativité dans la vie quotidienne de ces couples, de ces familles et de leurs enfants. En particulier dans la consultation clinique, il semble important d’en évaluer leur degré de stress, d’ambiguïté relationnelle, d’homonégativité intériorisée ainsi que de support social. Nous réfléchirons aussi sur les atouts et les limites des modèles majeurs de thérapie de couple et de famille dans le travail thérapeutique ainsi que sur la nécessité d’envisager des pistes dans la formation du futur thérapeute sur les questions LGBT. Formation qui pourrait être basée sur le modèle de la diversité comme modèle inclusif des différences familiales et relationnelles contemporaines.
« On ne peut pas communiquer parce que tu es tous les soirs dans TA bulle »
Authors: Duriez Nathalie
Published: May 2013

La redéfinition métaphorique du symptôme est une technique courante en thérapie familiale. L’addiction, la dépression, le refuge dans le travail ou derrière l’ordinateur, peuvent être recadrés comme un repli sur soi dans une bulle qui isole l’individu des autres, le protégeant ainsi de toute interaction indésirable. Nous avons étudié l’utilisation de cette métaphore à partir des entretiens retranscrits de douze thérapies avec un patient ayant des conduites addictives. Les résultats nous montrent que cette métaphore de la bulle amène les consultants à évoquer le sentiment d’abandon, de perte qu’ils ressentent vis-à-vis de celui qui s’enferme dans une bulle. Ils se mettent alors à créer leur propre bulle pour mieux supporter cette détérioration des relations dans la vie quotidienne. Cette question de la perte ambiguë (Boss, 1999) fait rapidement émerger celle d’un deuil non élaboré, ce qui va permettre de travailler avec une approche circulaire en croisant l’axe diachronique et l’axe synchronique pour mieux cerner comment la perte organise les relations familiales.
L'« Intervention systémique brève » : un manuel thérapeutique
Authors: Carneiro Claudio , Vaudan Christel , Duc Marwood Alessandra , Darwiche Joëlle , Despland Jean-Nicolas , de Roten Yves
Published: May 2013

Evaluer l’efficacité d’une thérapie ne devrait pas se limiter à en étudier l’impact sur différentes dimensions pertinentes. En effet, la recherche en psychothérapie insiste sur l’importance de développer des manuels thérapeutiques, afin de décrire ce que les thérapeutes font et donc comprendre ce qui est efficace, ainsi que des protocoles d’adhérence à ces manuels, afin de pouvoir évaluer si les intervenants font effectivement ce qu’ils prétendent faire. Cet article présente le manuel thérapeutique de l’Intervention systémique brève (ISB), un modèle d’intervention en six séances, utilisé dans une consultation pour couples et familles au Département de psychiatrie du CHUV à Lausanne. Ce modèle fait l’objet d’une recherche visant à évaluer son efficacité à court et moyen termes, au moyen de questionnaires remplis par les patients, évaluant différents niveaux : 1) les symptômes individuels, 2) la satisfaction conjugale, 3) la qualité des relations parentales, 4) la qualité des relations coparentales et 5) les relations familiales. L’ISB est un modèle intégratif des principales écoles de thérapie familiale systémique. Pour élaborer le manuel de l’ISB, nous nous sommes basés sur certains principes généraux communs aux différentes approches systémiques. La difficulté d’élaborer un tel manuel thérapeutique intégratif systémique sera discutée.
De deux à trois... Transition à la parentalité et alliances familiales dans les familles lesboparentales
Authors: Miscioscia Marina , D’Amore Salvatore , Delvoye Marie
Published: May 2013

Le présent travail s’intéresse au moment particulier du cycle de vie familial dénommé « transition à la parentalité ». Les études ayant approfondi ce moment délicat ont souligné la nécessité d’adopter une perspective multifactorielle et procédurale pour une meilleure compréhension du système en voie de développement. Deux principaux facteurs d’étude ont été déterminés : a) le développement des compétences interactives de la famille, la capacité du couple à organiser des modèles interactifs triadiques pendant la grossesse et de les réorganiser successivement dans la relation avec l’enfant ; b) les caractéristiques propres à l’enfant, par exemple le tempérament, sont des facteurs pouvant influencer le développement des compétences interactives précoces ainsi que le style de parenting . Ces aspects ont été amplement étudiés au sein des familles hétéroparentales, mais très peu au sein des familles homoparentales. La plupart des recherches se sont intéressées à une comparaison du développement de l’enfant dans ces deux types de familles, et ce sur différentes dimensions telles que la qualité des relations parent-enfant, le développement cognitif, le développement psycho-social et l’identité de genre. Nous proposons ici de présenter la situation d’une famille, issue de la recherche longitudinale que nous effectuons actuellement au sein du Service de clinique systémique et psychopathologie relationnelle de l’Université de Liège. Notre exposé présentera deux étapes de la passation du Lausanne Trilogue Play (LTP) : prénatale au 7 e mois de grossesse et postnatale au 3 e mois de vie de l’enfant. Nous observerons l’intérêt de cette procédure du LTP prénatal en tant qu’instrument prédictif des capacités parentales à agir leurs compétences interactives à la naissance de l’enfant, vérifiées par la procédure du LTP postnatal.
Etude du lien dans les familles adoptives à l'adolescence
Authors: Rosenfeld Zoé , Duret Isabelle
Published: May 2013

L’utilisation croisée de deux outils systémiques, le génogramme libre et le génogramme imaginaire et de questionnaires d’attachement permet une lecture particulièrement riche et dense concernant les représentations familiales et l’attachement dans les familles adoptives à l’adolescence. A travers le graphisme et le discours s’expriment les liens, les appartenances, ce qui relie mais également ce qui peut délier et bloquer une famille dans ses possibilités évolutives. Transmissions inter et transgénérationnelles seront ainsi mises en avant, mais également le matériel, tout ce matériel filiatif et individuel qui habite chacun des parents avant l’adoption et qui a pu et peut encore influencer l’attachement et le sentiment d’appartenance familiale. Nous proposons de découvrir ces outils au travers d’une situation issue d’une recherche sur les familles adoptives à l’adolescence.
A novel cobiotic containing a prebiotic and an antioxidant augments the glucose control and gastrointestinal tolerability of metformin: a case report
Authors: Greenway F. , Wang S. , Heiman M.
Published: May 2013

The gut microbiome plays an important role in regulation of metabolic processes, including digestion, absorption, and synthesis of bioactive molecules that signal physiological host mechanisms. Changes in the human gut microbiome are associated with type 2 diabetes and insulin resistance. Water-soluble dietary fibres like inulin and beta-glucan are fermented in the colon, and beta-glucan increases viscosity. Blueberries improve insulin sensitivity through an antioxidant effect. A cobiotic, consisting of purified inulin, sugar-free blueberry pomace extract, and an oat preparation of purified beta-glucan was developed for twice a day (bid) consumption as a smoothie drink to repair the gastrointestinal dysbiosis in type 2 diabetes. A 30-year-old man presented with new onset type 2 diabetes and a fasting glucose (FBS) of 375 mg/dl. Metformin 500 mg bid was initiated and increased to 1 g bid after 1 week. During the first 9 days of metformin treatment, he developed diarrhoea, but his FBS only dropped to 325 mg/dl. The cobiotic bid was added on the 9th day of metformin treatment, and after 2 days, his FBS dropped to 175 mg/dl. After 8 weeks on metformin and the cobiotic, his blood sugar was 100 mg/dl and he lost 5.5 kg. His stools became soft and formed on the cobiotic, reverted to diarrhoea when off of it for 2 days, and returned to normal on resuming the cobiotic formulation. Metformin is a safe, effective and inexpensive generic medication favouring weight loss, recommended as initial treatment of type 2 diabetes by the American Diabetes Association. However, a 20% incidence of diarrhoea limits its tolerability. A safe food supplement that can increase the efficacy of metformin and its tolerability, as occurred in this case report, would have significant positive public health consequences. A controlled clinical trial of the cobiotic with metformin is planned.
Product Development Integration Techniques and System Based on CAx and Knowledge Management
Authors: Chen Yongdang , Bao Zhiqiang , Ren Huijuan , Ma Huali , Liu Guangmei
Published: May 2013

Knowledge has become a key economic resource of enterprise and to become even only source of competitive advantage. With the structure of the product more and more complicated, function more and more incline to integration and compounding, modern product design is one base on knowledge. Knowledge-based integrated information system, to support knowledge management and technology innovation, is the development trends of information integration system. The integration information of computer aided technology (CAx) was analysed. A data structure of integration product model base on relation database was introduced. Knowledge-based integration system for product development was drawn out. It is a system base on product data management system and knowledge management system. This system framework used synthetically information technology and advanced manufacture technique, and realized product speedy and innovation design.
Rating the Customer Requirements based on DEMATEL and Entropy
Authors: Mingshun Yang , Ting Yu , Yanjie Liang , Yubo Zhang
Published: May 2013

In the configuration procedure of QFD ?Quality Function Deployment?, the importance rating of customer requirements as one of the important input parameters is very significant to the determination of the technical characteristics and even to the optimum decision to the whole quality of house as well as the following step of allocation decision-making. In this paper, firstly the drawbacks of the existing methods of determining the importance rating of customer requirements are analyzed. Then with the influence of customer requirement interdependence and market competitive evaluations sufficiently considered, DEMATEL is introduced to deal with self-correlations between customer requirements and Entropy is used to dispose the market competitive evaluations to modify the fundamental importance ratings of the customer requirements, thus a more objective comprehensive fundamental importance rating of the customer requirements can be gained. Finally, one example is given to verify the effectiveness of the presented method.
Research of New Machining Method of Skew Bevel Gears Based on Generation Line
Authors: Yang Zhaojun , Wang Baichao , Wang Yankun , Zhu Yujiang , Wang Jing , Wang Ying
Published: May 2013

According to generating principle of spiral bevel gear and space meshing theory, formation theory of generation line of tooth surface about skew bevel gears is studied. A new processing method of tooth surface with the generation line as chord of face circular cutters is put forward. Moving process model of milling processing with skew bevel gears is built, and profile of the gears can be machined using three axes linkage method based on the model. Machining test of the gears is carried out on experiment platform designed. Furthermore, 3D points cloud model of tooth surface are calculated in light of mathematical model of the tooth surface which has been established, and datum of mesh nodes on actual tooth surface are collected. Then surface errors is evaluated by normal vector equation of the tooth surface which has been developed. Finally, this method is proved to be effective and feasible.
Research of Car Navigation Data Retrieval System
Authors: Ren Xiaokui , Li Xiujuan , Ma Lirong
Published: May 2013

In recent years, the automotive industry has become a pillar industry of the world, the role played by the automobile in the daily life and work has become increasingly prominent. In the car navigation retrieval system, whether from the perspective of retrieval speed, screen display, or memory management, it can not meet the needs of users. In the design, the retrieval algorithm along the road of facilities retrieval can not only improve the retrieval system's modular structure, but also introduce the idea of thread pool. The whole system is divided into four modules; B-Tree + phenotype data structures being used can improve the search speed; a new road merging algorithm being proposed can improve the retrieval performance.
Design and Numerical Analysis of Collimated Water Jet Cutting System
Authors: Yang Guilin
Published: May 2013

Abstractâ??The Collimated Abrasive Water Jet(CAWJ) Cutting System is a compact system applicable in the workshop and on-site as well. The device allows machining between steam turbine discs with a gap space down to 120mm. The CAWJ Cutting System is supposed to overcome the main disadvantages of the conventional machine tool methods such as: long process times, lack of mobility of the drilling tools. For increasing the working efficiency and improving the cutting quality in material, the characteristics of the Cutting experiment and operating principle of a rig of CAWJ are discussed. Rock was cut for the experiment. The theory of abrasive accelerated in a long collimating pipe and reflect of cutting hard rock in various parameters of operating are analyzed. Theoretic and experimental results show that the CAWJ retains its ability basically when the length of the collimating pipe is in the range of 0.6m~2.8m. There is an optimum relationship during the length and diameter of the collimating pipe; abrasive feed rate and size. The research will lead to development of the hard rock cutting equipment using CAWJ.
A Parameter Adaptive Artificial Bee Colony Algorithm for Real-Parameter Optimization
Authors: Qiu Jian Feng , Wang Ji Wen , Yang Dan , Xie Juan , Yao Nan Zhen
Published: May 2013

A new adaptive variant of Artificial Bee Colony algorithm, PAABC, is proposed to improve optimization performance and enhance the robustness of ABC algorithm by incorporating into searching strategy and updating control parameter of searching equation adaptively . The incorporation of the information is helpful to accelerate convergence while avoiding prematurity especially multimodal problem. According to the characteristic of optimization problem, the control parameter will be update adaptively. The better parameter value associated with the mean of the p% best individual will survive into the next generation. Experiment results show that PAABC is better or equal to evolutionary algorithm according to a set of basic test function and the CECâ??13 test suite.
Research on Adaptive Beamforming of Shape Maintenance Algorithm for the Mainlobe
Authors: Ji Yan , Zhang Feng
Published: May 2013

To improve the transmitting adaptive beamforming efficiency and performance of the shape maintenance for the mainlobe, analyzed existing adaptive pattern for beamforming.In this paper, the question that the main lobe of adaptive pattern will be distorted significantly, an approach is proposed to maintain the mainlobe shape based on a main-lobe subspace, and the high peak side-lobe problem is resolved recurring to the orthonormal projection algorithms available. The new approach can be used to the transmitting adaptive beamforming, adaptive sum and sub beam forming. The trace driven simulation shows its performance.
Multidisciplinary Integrated Knowledge Modeling of Complex Product Design
Authors: Liu Haiqiang , Lv Ming
Published: May 2013

Based on analysis of application characteristics of product design knowledge, the design process of complex product was presented. A framework structure of product integrated design knowledge model for supporting multi-disciplinary design was proposed, the fusion method of product integrated design knowledge was also explored, and design knowledge acquisition of multidisciplinary design along with evaluating satisfaction degree in process and method of objection were analyzed. Associated with the methodology of multidisciplinary design optimization, a prototype system supporting multidisciplinary design was developed based on ideal framework of product integrated design knowledge model with the software development tool Genexus.
The Relation between Energy, Economy and Environment in Chinaâ??s Industrial Sector: Based on Energy Saving
Authors: Han Qiang , Zhou Yong
Published: May 2013

Energy saving is important for our society, and industry should be focused because of its high energy consumption. This paper used the grey correlation degree method to discuss the relation between economic development, environmental protection and industrial energy consumption in China, gave harmonious development model for 3E (Energy â?? Economy - Environment) system, and computed contribution rate for energy consumption decrease based on industrial indexes. Results show that energy utilization efficiency of industry is low, industrial energy consumption promotes the increase of waste, industrial added value blocks the decrease of energy consumption intensity, and the decrease of industrial energy consumption intensity is vital. Hence, energy saving of industry is imperative, which can be achieved by measures in industry restructuring, technology research, administration mode, legal construction, and recycling economy.
A New Smooth Support Vector Machine with 1-Norm Penalty Term
Authors: Shen Jindong , Peng X.J.
Published: May 2013

Recently, soft margin smooth support vector machine with 1-norm penalty term (SSVM1) is discovered to possess better outlier resistance than soft margin smooth support vector machine with 2-norm penalty term (SSVM2). One of the most important steps in the framework of SSVMs is to replace the x+ by a differential function in the primal model, and get an approximate solution. This study proposes one function constructed by Padé approximant via the formal orthogonal polynomials as the smoothing technique, and a new 1-norm SSVM, Padé SSVM1, is represented. A method for outlier filtering is proposed to improve the ability of outlier resistance. The experimental results show that Padé SSVM1, even without outlier filtering, performs better than the previous SSVM2 and SSVM1 on the polluted synthetic datasets.
A MapX-based Segmentation Algorithm of Region Feature by Polyline
Authors: Wu Da-Sheng
Published: May 2013

MapX didnâ??t provide a ready function which can be easy to split region feature in the client. The objective of this study was to design a segmentation algorithm for cutting region feature with polyline. In order to convenience the description, during the segmentation, only 2 intersection points were taken into consideration. According to the order of P1(the first intersection point) and P2(the second intersection point) in the R(region feature) and L(polyline feature), 4 kinds of situations had been taken into account, those were respectively, P2 was always after P1 in the R and L, P2 was after P1 in the R but P2 was before P1 in the L, P2 was always before P1 in the R and L, and P2 was before P1 in the R but P2 was after P1 in the L. Segmentation results showed that the algorithm was stable and reliable.
Probability-Symmetric Storage Allocation for Distributed Storage Systems Based on Network Coding
Authors: Wu Qingtao , Zhang X. L. , Zheng R. J. , Zhang M. C.
Published: May 2013

The goal of optimal allocation is to increase stored data availability subject to minimizing the storage budget. Symmetric allocation based on the network coding has been proved to be optimal for distributed storage systems if node availability is not considered. However, because of network conditions and the inherent properties of nodes, each node will have a different availability. This paper focuses on the problem of optimizing distributed data storage when considering node availability. Using a probability model for storage systems, we redefine symmetric allocation in terms of probability-symmetric allocation and propose a probability-symmetric allocation model and strategy based on network coding. These are shown to be optimal in general. Compared with the symmetric allocation scheme proposed by Leong et al., the proposed probability-symmetric allocation scheme not only improves data availability in distributed storage systems but also is more practical.
A Predictive Model of Insider Threat Based on Bayesian Network
Authors: Wang Hui , Wang Yunfeng , Yang Guangcan
Published: May 2013

At present, development of science and technology accelerates the society-informationization, many enterprises follow the trend of era to build internal network for convenient communication, but the increasing network security incidents cause a new understanding about the importance of internal network. The predictive model of insider threat based on Bayesian network is put forward in this paper. In the model, insider behaviors in the process of operation are considered as research objects, resource and intrusion evidence for operation sequence are seen as nodes, and then the network attack graph of Bayesian network is established. The concept of meta-operation, atomic attack and intrusion evidence are put forward in the graph. The node variable, its value and the conditional probability distribution of network attack graph are defined. Based on Bayesian network approximate inference, the improved likelihood weighted algorithm is presented to calculate the parameter and to quantify the insider threat. According to the simulation experiment data analysis, this approach is fast, simple and accurate, and plays an effective role in the process of insider threat prediction and evaluation.
Research on the Evolution Method of Cluster Supply Chain Network Based on Computational Experiment
Authors: An Ji-yu , Zhai Yu-qi , Xue Xiao
Published: May 2013

The definition of cluster supply chain (CSC) is proposed to help small and medium-sized enterprises (SMEs) realize â??ant colony effectâ? and gain more profits. Considering CSC is a complex adaptive dynamic system, it is still in the initial stage and the problem of evolution is difficult to solve by static method. This paper builds a two-stage supply chain evolution model based on computational experiment and generates Agent models. The evolution model is extended to three-stage supply chain model in simulation to research the influence factors of network evolution and predict the effectiveness of service support system, supporting the development of CSC. Preliminary results show that the evolution model can provide the reference for the development of CSC.
New Exact Solutions of Rational Expansion Method for the Variable Coefficient Nonlinear Equation with Forced Term
Authors: Liu Juan , Hou Zhan-wei
Published: May 2013

With the aid of symbolic computation system Maple, several new kinds of generalized exact solutions for the variable coefficient combined KdV equation and Chaffee-Infante equation with forced term are obtained by using a new generalize Riccati equation rational expansion method. This approach can also be applied to other variable coefficient nonlinear evolution equations.
Universal Grey Method Based on Hyper-chaos for Solving Forward Displacement of Generalized Parallel Mechanism
Authors: Luo Youxin
Published: May 2013

The forward displacement of the generalized parallel mechanism can be converted to nonlinear equations for solving, but it is very difficult to find all solutions because of the strong coupling of the nonlinear equations. Universal grey mathematics was applied to the mechanism synthesis, and based on interval arithmetic toolbox INTLAB the universal grey computing toolbox UG_V1 was compiled. Combining universal grey iterative method with hyper-chaotic sequences and taking hyper-chaotic sequences generated by hyper-chaotic neural network system as the initial values of universal grey Newton iterative method, all solutions were found and the calculation steps were given. Example of the generalized parallel mechanism 4SPS-2CCS shows the method is correct and effective. The universal grey method based on hyper-chaos can run within the real range, and it provides a new approach for solving forward displacement in the generalized parallel mechanism and other strongly nonlinear equations.
Nonlinear Measure about l 2-norm with Application in Synchronization Analysis of Complex Networks via the General Intermittent Control
Authors: Zhang Qunli
Published: May 2013

Based on the nonlinear measure about l 2-norm, some simple yet generic criteria are derived by using the general intermittent control, which ensure the exponential stability of dynamic systems. The numerical simulations whose theoretical results are applied to robust synchronization of complex networks demonstrate the effectiveness and feasibility of the proposed technique.
Scheme Comparison of New Airport Site Selection Based on Lattice Order Decision Making Method in the Integrated Transportation System
Authors: Zhao Suxia , Sun Peihong
Published: May 2013

In view of the limited rational decision made by decision-makers in reality, multi-objective Lattice Order Decision Making is introduced in the new airport site selection and Lattice Order Decision evaluation index system is constructed. Based on the types of index, processed the index into dimensionless, Integrate decision-makersâ?? subjective judgment and the data dispersion feature to calculate the relative weights of the evaluation index. Combined with Decision-making moment, calculate the value of comprehensive differences of the schemes, and realize the Lattice Ordering of the schemes. Apply this decision-making method to evaluate three sets of alternative airport site selection schemes in Chengdu. The outcome is consistent with the actual situation, which proved that the decision-making method is reasonable.
Centerline Planning of Virtual Endoscopy Using B-Snake Model
Authors: Xiangjun Gao
Published: May 2013

A novel centerline planning algorithm for virtual endoscopy is proposed. It can be executed in original images data directly, no longer subjects to the results of segmentation. It is based on B-Snake model, and a moving polyhedron centralize method is defined, which provides a centralizing force as the external force of B-Snake model. And the internal force of the Snake model is removed, so as to control the model easily. With the characteristic of B-spline, a few control points are chosen and the smooth and continuous centerline is got effectively. Error analysis and experimental results show the validity of the proposed method.
Research on Sino-Tibetan Machine Translation Based on the Reusing of Domain Ontology
Authors: Yan Xiaodong , Zhao Xiaobing
Published: May 2013

There are some problems on traditional machine translation and these problems have affected its application. The combination of ontology and machine translation can bring about change to machine translation. Machine translation based on the reusing of domain ontology can effectively solve the problems that exist in traditional machine translation. The domain ontology knowledge base of Tibetan folk culture is tried to be built and the Sino-Tibetan machine translation system based on the reusing of Tibetan folk culture domain ontology is tried to be constructed in our research. In this machine translation system, ambiguity problem which exits in traditional machine translation can be solved and the domain ontology can be constructed automatically. By that intelligent machine translation between Tibetan and Chinese can be achieved.
Study on Default Risk Based on LT Model: Evidence from Chinese List Companies
Authors: Wang Yajie , Li Hui , Yu Zhufeng
Published: May 2013

The specific credit risks can be efficiently used to defense the damage of default behavior, in which, the core problem is how to evaluate the default probability (expected default frequency, EDF) of entities. This paper measures and predicts the default probability of the listed companies in China including two kinds of sample companies such as special treatment and rating ones with the data during 2008-2009 using LT Model which argues default barrier is endogenous through the optimization of the capital structure. The result shows this approach is proper when measuring short-term default risk of listed companies.
2D elastic full‐waveform imaging of the near‐surface: application to synthetic and physical modelling data sets
Authors: Bretaudeau François , Brossier Romain , Leparoux Donatienne , Abraham Odile , Virieux Jean
Published: May 2013

Standard seismic methods are generally not well adapted to provide sharp quantitative images of the first few metres of underground. A two‐dimensional full‐waveform inversion of land seismic data, based on frequency‐domain viscoelastic modelling, offers a promising approach to take advantage of the full complexity of seismograms and to simultaneously build 2D images of VP and VS parameters. In order to understand the behaviour of this method in a near‐surface context and anticipate the corresponding field applications, we perform this investigation by applying waveform inversion on a simple layered medium. We first use synthetic data obtained from numerical modelling and then we employ laboratory data obtained by small‐scale physical modelling. We demonstrate that such a near‐surface 2D model can be quantitatively determined even in a realistic situation where the data are dominated by high‐amplitude surface waves. A comparison of results derived for the same medium from ideal synthetic data and noisy experimental data allows detecting anomalies in the reconstruction of velocity models due to the experimental nature of the data used.