bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis, DNA Binding and Topoisomerase I Inhibition Activity of Thiazacridine and Imidazacridine Derivatives
Authors: Lafayette Elizabeth , Vitalino de Almeida Sinara , Da Rocha Pitta Marina , Carneiro Beltrão Eduardo , Gonçalves da Silva Teresinha , Olímpio de Moura Ricardo , Da Rocha Pitta Ivan , De Carvalho Luiz , Do Carmo Alves de Lima Maria
Published: December 2013

Thiazacridine and imidazacridine derivatives have shown promising results as tumors suppressors in some cancer cell lines. For a better understanding of the mechanism of action of these compounds, binding studies of 5-acridin-9-ylmethylidene-3-amino-2-thioxo-thiazolidin-4-one, 5-acridin-9-ylmethylidene-2-thioxo-thiazolidin-4-one, 5-acridin-9-ylmethylidene-2-thioxo-imidazolidin-4-one and 3-acridin-9-ylmethyl-thiazolidin-2,4-dione with calf thymus DNA (ctDNA) by electronic absorption and fluorescence spectroscopy and circular dichroism spectroscopy were performed. The binding constants ranged from 1.46 × 104 to 6.01 × 104 M−1. UV-Vis, fluorescence and circular dichroism measurements indicated that the compounds interact effectively with ctDNA, both by intercalation or external binding. They demonstrated inhibitory activities to human topoisomerase I, except for 5-acridin-9-ylmethylidene-2-thioxo-1,3-thiazolidin-4-one. These results provide insight into the DNA binding mechanism of imidazacridines and thiazacridines.
Dietary Magnesium and Genetic Interactions in Diabetes and Related Risk Factors: A Brief Overview of Current Knowledge
Authors: Hruby Adela , McKeown Nicola , Song Yiqing , Djoussé Luc
Published: December 2013

Nutritional genomics has exploded in the last decade, yielding insights—both nutrigenomic and nutrigenetic—into the physiology of dietary interactions and our genes. Among these are insights into the regulation of magnesium transport and homeostasis and mechanisms underlying magnesium’s role in insulin and glucose handling. Recent observational evidence has attempted to examine some promising research avenues on interaction between genetics and dietary magnesium in relation to diabetes and diabetes risk factors. This brief review summarizes the recent evidence on dietary magnesium’s role in diabetes and related traits in the presence of underlying genetic risk, and discusses future potential research directions.
U.S. Equity Mean-Reversion Examined
Authors: Liew Jim , Roberts Ryan
Published: December 2013

In this paper we introduce an intra-sector dynamic trading strategy that captures mean-reversion opportunities across liquid U.S. stocks. Our strategy combines the Avellaneda and Lee methodology (AL; Quant. Financ. 2010, 10, 761–782) within the Black and Litterman framework (BL; J. Fixed Income, 1991, 1, 7–18; Financ. Anal. J. 1992, 48, 28–43). In particular, we incorporate the s-scores and the conditional mean returns from the Orstein and Ulhembeck (Phys. Rev. 1930, 36, 823–841) process into BL. We find that our combined strategy ALBL has generated a 45% increase in Sharpe Ratio when compared to the uncombined AL strategy over the period from January 2, 2001 to May 27, 2010. These new indices, built to capture dynamic trading strategies, will definitely be an interesting addition to the growing hedge fund index offerings. This paper introduces our first “focused-core” strategy, namely, U.S. Equity Mean-Reversion.
Illuminating the Capabilities of the Suomi National Polar-Orbiting Partnership (NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band
Authors: Miller Steven , Straka William , Mills Stephen , Elvidge Christopher , Lee Thomas , Solbrig Jeremy , Walther Andi , Heidinger Andrew , Weiss Stephanie
Published: December 2013

Daytime measurements of reflected sunlight in the visible spectrum have been a staple of Earth-viewing radiometers since the advent of the environmental satellite platform. At night, these same optical-spectrum sensors have traditionally been limited to thermal infrared emission, which contains relatively poor information content for many important weather and climate parameters. These deficiencies have limited our ability to characterize the full diurnal behavior and processes of parameters relevant to improved monitoring, understanding and modeling of weather and climate processes. Visible-spectrum light information does exist during the nighttime hours, originating from a wide variety of sources, but its detection requires specialized technology. Such measurements have existed, in a limited way, on USA Department of Defense satellites, but the Suomi National Polar-orbiting Partnership (NPP) satellite, which carries a new Day/Night Band (DNB) radiometer, offers the first quantitative measurements of nocturnal visible and near-infrared light. Here, we demonstrate the expanded potential for nocturnal low-light visible applications enabled by the DNB. Via a combination of terrestrial and extraterrestrial light sources, such observations are always available—expanding many current existing applications while enabling entirely new capabilities. These novel low-light measurements open doors to a wealth of new interdisciplinary research topics while lighting a pathway toward the optimized design of follow-on satellite based low light visible sensors.
Design Methodology of an Equalizer for Unipolar Non Return to Zero Binary Signals in the Presence of Additive White Gaussian Noise Using a Time Delay Neural Network on a Field Programmable Gate Array
Authors: Suárez Santiago , González Carlos , Hernández Jesús
Published: December 2013

This article presents a design methodology for designing an artificial neural network as an equalizer for a binary signal. Firstly, the system is modelled in floating point format using Matlab. Afterward, the design is described for a Field Programmable Gate Array (FPGA) using fixed point format. The FPGA design is based on the System Generator from Xilinx, which is a design tool over Simulink of Matlab. System Generator allows one to design in a fast and flexible way. It uses low level details of the circuits and the functionality of the system can be fully tested. System Generator can be used to check the architecture and to analyse the effect of the number of bits on the system performance. Finally the System Generator design is compiled for the Xilinx Integrated System Environment (ISE) and the system is described using a hardware description language. In ISE the circuits are managed with high level details and physical performances are obtained. In the Conclusions section, some modifications are proposed to improve the methodology and to ensure portability across FPGA manufacturers.
Monitoring Urban Wastewaters’ Characteristics by Visible and Short Wave Near-Infrared Spectroscopy
Authors: Melendez-Pastor Ignacio , Almendro-Candel M. , Navarro-Pedreño Jose , Gómez Ignacio , Lillo Mariano , Hernández Encarni
Published: December 2013

On-line monitoring of wastewater parameters is a major scientific and technical challenge because of the great variability of wastewater characteristics and the extreme physical-chemical conditions that endure the sensors. Wastewater treatment plant managers require fast and reliable information about the input sewage and the operation of the different treatment stages. There is a great need for the development of sensors for the continuous monitoring of wastewater parameters. In this sense, several optical systems have been evaluated. This article presents an experimental laboratory-based approach to quantify commonly employed urban wastewater parameters, namely biochemical oxygen demand in five days (BOD5), chemical oxygen demand (COD), total suspended solids (TSS), and the ratio BOD5:COD, with a visible and short wave near infrared (V/SW-NIR) spectrometer (400–1000 nm). Partial least square regression (PLSR) models were developed in order to quantify the wastewater parameters with the recorded spectra. PLSR models were developed for the full spectral range and also for the visible and near infrared spectral ranges separately. Good PLSR models were obtained with the visible spectral range for BOD5 (RER = 9.64), COD (RER = 10.88), and with the full spectral range for the TSS (RER = 9.67). The results of this study show that V/SW-NIR spectroscopy is a suitable technique for on-line monitoring of wastewater parameters.
577 000 enfants vivent dans des familles pauvres en Île-de-France
Authors: Chemineau Danie , Pirus Claudine , Stawinski Adeline
Published: December 2013

FRE: Pauvreté , Enfants pauvres , Bas revenus
Une majorité des bénéficiaires d’un CLCA à taux plein retravaillent quelques mois après être sortis du dispositif
Authors: Vanovermeir Solveig
Published: December 2013

FRE: CLCA , Politique familiale, Insertion professionnelle
Évaluations « expérimentales » : quelques leçons de l’histoire.
Authors: Barbier Jean-Claude
Published: December 2013

A decade into this century, evaluation in France was transformed by a craze for experimental assessment, as was the case in Scandinavia and Germany. This conceptual innovation came about after major development assistance donors were questioned about the relevance of their evaluation practice, and after consideration by theWorld Bank, an associate of the Gates and Hewlett foundations. Subsequently, experimental evaluation has attracted

new interest for evaluation by the economics profession. In France, the Revenu de solidarité active provided the opportunity for using it on a large scale. It is unlikely that experimental evaluation will live up to the expectations placed in it by certain new advocates. It will probably, more logically, add to the pluralist methodology involved in the evaluation of policies and public programmes since its beginning.
Pourquoi existe-t-il peu d’enquêtes longitudinales en France ?
Authors: Riandey Benoît
Published: December 2013

FRE: Enquêtes longitudinales, Panels
Qualité de l’emploi et des conditions de travail des professionnel-le-s de la petite enfance.
Authors: Devetter François-Xavier
Published: December 2013

Since the 1990s, there has been a big increase in early years professions (childminders and nursery assistants in particular) which have also seen many changes. However, the quality of employment (i;e employment circumstances in terms of pay, stability and working conditions) has still not been analysed very closely. The objective of this article is to study the working and employment conditions of these professions using the same grids as those normally used (Employment survey by the National Institute of Statistics and Economic Studies and Working conditions survey by the Directorate for Research,

Studies and Statistics) by comparing them to other similar professions. Specific features in career paths should first be highlighted and a more precise analysis of the quality of employment should be performed by paying particular attention to four additional aspects : level of pay, job stability, physical, mental and temporal working conditions and finally, the extent of the resources available for the worker. This approach also means that ambiguities can be highlighted in the status of childminders who fluctuate between being employees and self-employed.
Actualité du droit du logement (octobre 2012)
Authors: Kesteman Nadia
Published: December 2013

FRE: Droit au logement , Aides personnelles au logement , Aides à la pierre.
Retours sur le « modèle danois » : quinze ans d’analyses croisée
Authors: Barbier Jean-Claude
Published: December 2013

15 years on : revisiting the “ Danish model”.

The common expression “ The Danish model” is very misleading because it suggests that Denmark could be copied abroad. Only to the extent that Danish society is consistent and cohesive can Denmark be considered a “ model”, i. e. a system of structural relationships that appear sustainable over the years. Denmark has undergone a considerable number of reforms and political changes over the period 1990-2013. When one revisits – as the present text does – analyses conducted since 1997, in parallel and in cooperation with Danish colleagues (especially Henning Jørgensen), “ breaking points” emerge, but also some continuity. There is no doubt as to Danish society keeping its distinctive traits, when one compares it with French society. Yet, Danish social protection and Danish social policies, as well as Danish industrial relations and its system of government have been profoundly transformed.
Les réformes de l’éducation préscolaire en Suède : un nouveau paradigme ?
Authors: Jönsson Ingrid , Sandell Anna , Tallberg-Broman Ingegerd
Published: December 2013

Cet article analyse les réformes récentes engagées dans l’éducation préscolaire suédoise. L'educare suédois serait-il tenté par des idées centrées surtout sur la préparation scolaire et l’employabilité future ? Cet article analyse les changements d’objectifs, d’instruments politiques et de contexte, à partir d’une perspective historique. La conclusion est que la réforme engagée doit être interprétée tant au regard des idéaux nationaux que des idées défendues par les organisations internationales. L’application des critères de Peter A. Hall (1993) pour le changement de paradigme révèle des changements de premier et de second ordres, plutôt qu’une modification simultanée des objectifs, des instruments politiques et du contexte. Il faudra une nouvelle recherche pour mieux comprendre ce qui est réellement en train de se passer dans le contexte local, car il est rare que les politiques et les pratiques se superposent totalement.
Les centres sociaux et l’animation sociale dans la politique familiale
Authors: Céroux Benoît , Crépin Christiane
Published: December 2013

FRE: Centre social; Projet social; Cohésion sociale
Du RMI au RSA : les trajectoires d’emploi des allocataires du revenu de solidarité active
Authors: Trancart Danièle
Published: December 2013

On 1st June 2009, RSA took the place of RMI. To what extent has this new scheme encouraged people to return to work ? Based on data from the CNAF, the French national office of family social benefits, a study of the path to employment taken by unmarried recipients of RSA for the unemployed shows that only a minority of people (scarcely 15% both at the time of the reform and in the year preceding it) had episodes of employment. However, despite a more unfavourable economic situation, there were fewer people leaving employment at the time of the reform. Lastly, the new scheme is struggling to get unmarried benefit recipients with or without children back into regular employment.
Les bénéficiaires du RMI, de l’API et du RSA-socle : une évolution liée aux fluctuations du chômage
Authors: Siguret Isabelle , Cazain Sophie
Published: December 2013

FRE: RSA-socle, Évolution des bénéficiaires, Chômage
Peak forces and lateral resolution in amplitude modulation force microscopy in liquid
Authors: Guzman Horacio V , Garcia Ricardo
Published: December 2013

The peak forces exerted on soft and rigid samples by a force microscope have been modeled by performing numerical simulations of the tip motion in liquid. The forces are obtained by using two contact mechanics models, Hertz and Tatara. We present a comparison between the numerical simulations and three analytical models for a wide variety of probe and operational parameters. In general, the forces derived from analytical expressions are not in good quantitative agreement with the simulations when the Young modulus and the set-point amplitude are varied. The only exception is the parametrized approximation that matches the results given by Hertz contact mechanics for soft materials and small free amplitudes. We also study the elastic deformation of the sample as a function of the imaging conditions for materials with a Young modulus between 25 MPa and 2 GPa. High lateral resolution images are predicted by using both small free amplitudes (less than 2 nm for soft materials) and high set-point amplitudes.
Isolation and structural identification of glycopolymers of Bifidobacterium bifidum BIM B-733D as putative players in pathogenesis of autoimmune thyroid diseases
Authors: Kiseleva E.P. , Mikhailopulo K.I. , Novik G.I. , Szwajcer Dey E. , Zdorovenko E.L. , Shashkov A.S. , Knirel Y.A.
Published: December 2013

Bifidobacterium bifidum 791 (commercially available as B. bifidum BIM B-733D) cell-surface biopolymers (BPs) interact selectively with human serum thyroid peroxidase (TPO) and thyroglobulin (Tg) autoantibodies (anti TPO and anti Tg, respectively). BPanti-TPO and BPanti-Tg were isolated from the soluble fraction of B. bifidum BIM B-733D by affinity chromatography with anti-TPO or anti-Tg, respectively. Homogeneity of affinity eluates (AEanti-TPO and AEanti-Tg) was tested by size exclusion chromatography. For each AE, the elution profiles generated on the basis of absorbance at 280 nm do not conform to ELISA data for functional activity characteristic of BPs. Moreover, high functional activity was detected in chromatographic fractions that had significantly different molecular weights and no absorbance at 280 nm, which suggests a non-protein (carbohydrate) nature of BPanti-TPO and BPanti-Tg. The semi-preparative size exclusion chromatography of AEanti-TPO and AEanti-Tg with detection by refractometer gave 5,000-7,000 Da fractions containing substances that interact selectively with either anti TPO (BPanti-TPO) or anti-Tg (BPanti-Tg) according to ELISA data. Analysis by two-dimensional NMR spectroscopy including a 1H, 13C-heteronuclear single-quantum coherence experiment indicated that both substances are linear α-1,6-glucans. For the first time, an immunological similarity (molecular mimicry) of glycopolymers of B. bifidum BIM B-733D and human thyroid proteins, TPO and Tg, was shown. On the whole, our data point to a possible role of bifidobacteria in the pathogenesis of autoimmune thyroid diseases (ATD). The main requirements for triggering/acceleration or prevention/abrogation of ATD by bifidobacteria through molecular mimicry mechanism are hypothesised to be (1) genetic predisposition to ATD and (2) intestinal epithelium penetration by α-1,6-glucan.
Broches de cinturón de tipo hispano en Cástulo: una contribución al ejército bajo imperial en Hispania
Authors: Ceprián del Castillo Bautista , Repullo Roldán Carmen , Alarcón Fernández Jorge
Published: December 2013

Con motivo en 2009 de una excavación arqueológica en la ciudad ibero-romana de Cástulo (Linares, Jaén) se halló un broche de cinturón de tipo Simancas I (grupo Hispano de Aurrecoechea (2001: pp. 155 y ss.) en un contexto cronológico de primera mitad del s. V. Ante la ubicación de este tipo de elementos en un contexto urbano planteamos la hipótesis de que los broches de tipo hispano, de cronología bajo imperial, sean parte de la indumentaria del ejército regular romano. Por un lado, un análisis de la producción formal de dichos broches y su comparación con los de tipo no-hispanos y pseudo/hispanos de carácter militar (Aurrecoechea, 2001: pp. 107 y ss.) y, por otro, un estudio estadístico sobre la distribución de ambos tipos, permiten demostrar el carácter castrense de los broches hispanos. También se concreta la presencia militar en Cástulo y su inserción en la política geoestratégica imperial asignada al ejército de Hispania en el bajo imperio (Fernández y Morillo, 1997: p. 739).

[fr] Avec motif en 2009 d’une excavation archéologique dans la ville ibère - romaine de Cástulo (Linares, Jaén) un boucle de ceinture type de Simancas I (groupe hispanique d’Aurrecoechea (2001: pp. 155 y ss.), s’est trouvé dans un contexte chronologique de première moitié de s. V. Devant la situation de ce type d’éléments dans un contexte urbain, nous proposons l’hypothèse de que les boucles de type hispanique, de chronologie sous impérial, font partie du costume de l’armée régulière romaine. D’une part, une analyse de la production formelle ces fermoirs et de leur comparaison avec ceux de type non-hispaniques et pseudo/hispaniques de caractère militaire (Aurrecoechea, 2001:pp.107 y ss.) et, par un autre, une étude statistique sur la distribution des deux types, permettent de démontrer le caractère militaire des boucles hispaniques. La boucle permet délimiter aussi la présence militaire en Cástulo et son insertion dans la politique géo-stratégique impériale assignée à l’armée de Hispania dans le bas empire (Fernández y Morillo, 1997: p. 739).
Study of Metal Solidification Model Based on Dissipative Structure
Authors: Yang Fu Shuang
Published: December 2013

The model of metal solidification based on dissipative structure theory is established, which is reduced to threshold depending on the constitutional undercooling criterion, and trigger depending on volume fluctuation and temperature fluctuation. In accordance with the relation of volume fluctuation and temperature fluctuation, the transformation of solid-liquid interface is discussed in three cases.
Influence Factors of Cu-Fe-La/FSC Catalyst Applications in CWAO Technology
Authors: Zhang Yong Li , Shun Yan Ling
Published: December 2013

Catalytic Wet Air Oxidation (CWAO) is one of advanced oxidation methods about organic wastewater treatment, and the treatment effect of high concentration organic wastewater is remarkable with this method. In this study, the influence factors of the reaction temperature, the reaction pressure and the influent pH were researched on the treatment of the printing and dyeing wastewater with Cu-Fe-La/FSC catalyst, by the single factor experiments and Catalytic Wet Air Oxidation (CWAO) method. Then the catalysts were evaluated by two aspects of the activity and stability. The results show that: with the increase of the reaction temperatures and the reaction pressures, and with the decrease of the influent pH, the CODCrremoval rate improved and the effluent pH reduced. However, the amount of dissolution catalyst components increased with the improvement of treatment effect and the extension of reaction time. By weighing the activity and stability of the catalysts, the optimized reaction temperature, the reaction pressure and the influent pH are 180 °C, 2.5 MPa and 7.25, respectively. Under the optimized operating conditions, the printing and dyeing wastewater with CODCrof 2000 mg/L reaches the CODCrremoval rate of 78.2%, and the dissolvedC[Cu] andC[Fe] of the catalysts are 12.2 and 10.9 mg/L, respectively. Therefore, the catalyst Cu-Fe-La/FSC presents the high activity and stability.
Influence of the Waveform and DC Offset on the Asymmetric Hysteresis Loop in Au/PZT/Pt/Al2O3/SiO2/Si Thin Films Prepared by MOCVD Method
Authors: Masruroh
Published: December 2013

In this paper, the hysteresis loop of Au/PZT/Pt/Al2O3/SiO2/Si thin films was experimentally measured in different conditions as a waveform and a DC offset, using a precision LC Radiant technology RT-66. The measurements were taken by applying a drive to the Pt bottom electrode connected to the drive of the precision LC and the Au top electrode was connected to the drive of the precision LC. The waveform was applied as wave type = sine; peak voltage = 6 V; frequency = 1 KHz and duration = 100 s. The results show that, by applying waveform and DC offset the hysteresis loop softly changes the polarization (Pr) and coercive field (Vc).
Effects of PCBM Loading and Thermal Annealing on Nanomorphology of Blend of Polymer/Fullerene Thin Films Solar Cells: Impact on Charge Carrier Mobility and Efficiency
Authors: Shafai T.S. , Oklobia O.
Published: December 2013

Blend of P3HT/Fullerene thin films solar cell with two different percentage ratio of PCBM loading is investigated. Optical absorption spectroscopy is employed to elucidate the nature of PCBM cluster formation upon thermal annealing. Sandwich structures comprising of ITO/ Cs2CO3/ P3HT: PCBM/ LiF/ Al (electron only device), and ITO/ PEDOT:PSS/ P3HT:PCBM/ Au (hole only device) are fabricated using spin coating for the investigations concerning electron and hole mobilities. The impact of charge carrier mobilities on bimolecular recombination and ultimately the power conversion efficiency for two different PCBM loading is also investigated. A direct correlation between Langev in recombination rate and short circuit current density as a function of thermal annealing is realized. The maximum power conversion efficiency is measured at 150°C for P3HT: PCBM (1:1) solar cell.
A Study on PHA/PLA/Talc Ternary Composites
Authors: Tan Guan Yue , Zhong Lu Hua , Lan Xiao Ping , Sun Xi Ming , Ou Zhao Yang
Published: December 2013

The mechanical and heat properties of fully biodegradable elastomer PHA and PLA composites were studied. The effects of types and contents of coupling agents, mesh and contents of Talc on mechanical properties, MFR of PHA/PLA composites were studied. We found that when PHA: PLA=70:30, the PHA/PLA composites are stiff, flexible and good heat resistant. With 1% ligand titanic acid ester coupling agent treat 20 parts of 3000 mesh Talc, we can get the best PHA/PLA/Talc ternary composites. The DSC results indicate that the PHA/PLA/Talc ternary composite has the rapid crystallization temperature between 50-75°C, the melt temperature is about 150°C.
Synthesis of Hollow and Hierarchical NiO Nanosheets Nanotubes and their Application as Supercapacitor Electrodes
Authors: Xu Xin , Ding Shu Jiang , Yu De Mei
Published: December 2013

Hollow and hierarchical NiO nanosheets nanotubes were successfully prepared through a one-step solvothermal route followed by a thermal annealing treatment. The microstructure and chemical composition of Ni-precursor@PNT core-shell nanostructures and calcined NiO nanosheets nanotubes are investigated by SEM, TEM, TGA and XRD. The unique NiO nanosheets nanotubes show admirable electrochemical performance as an electrode material for supercapacitors owing to the hierarchically tubular structures and hollow interior.
Planning and Control in Construction of LW3-1 Jacket
Authors: Han Shao Ning , Wang Hong , Wu Hang , Sun Pi Song , Xue Yu Hui , Meng Rui , Zhang Hui
Published: December 2013

According to Chinese traditional classification, large-sized jackets weight over 10,000 tons and stand in over 100-meter water. Large-sized jackets are different from the normal in construction tonnage, structural dimension and quality control requirements as well as construction difficulty. More complicated construction technology and programme, higher grade of materials, stricter control requirements on node weld and higher risks all need matched stricter, more meticulous and more comprehensive management in planning and scheduling. Combined with construction of LW3-1 deep-water jacket, this paper describes the planning, tracking progress, process control and optimization.
Estimation of the Induced Hydrodynamic Periodic Forces of Marine Propeller under Non-Uniform Inflow via CFD
Authors: Bennaya Mohamed , Zhang Wen Ping , Hegaze Moutaz M.
Published: December 2013

In this work, both steady and unsteady Reynolds-Averaged Navier Stokes (RANS) simulations have been used via FLUENT software to calculate the induced 3-D hydrodynamic forces and moments of marine propeller. Marine propeller is excited by variation of hydrodynamic loading due to its operation in non-uniform wake field. The induced hydrodynamic forces and moments are calculated for single blade and for all blades at low Reynolds number under two operating conditions. The first one, uniform inflow is considered at the inlet. The second one, non-uniform inflow is considered at the inlet (under the wake effect of the ship) to represent the propeller-ship interaction. Unsteady results show that, due to non-uniform inflow every single blade is suffering from periodic forces and moments with fluctuation amplitude and harmonies higher than that applied on the propeller shaft but with lower frequency. The moments in vertical and transversal directionsMyandMzare higher than the axial momentMx. This study shows that, using Computational Fluid Dynamics (CFD) to solve RANS equation is a reliable tool for calculating the hydrodynamic characteristics and estimating the excited hydrodynamic forces due to propeller-ship interaction.
Shear Stress Distributions in a Bonded Joint under Tension
Authors: He Xiao Cong
Published: December 2013

Shear stress distribution behaviour of a single-lap bonded joint under tension was investigated using the three-dimensional finite element methods. Five layers of 20-node solid elements were used across the adhesive layer thickness to get accurate indication of the variation of shear stress. The stress distributions in the joint are given by the stress contours. All the numerical results obtained from the finite element analysis show that the spatial distribution of shear stress are similar for all 6 interfaces though the stress values are obviously different. It can also be seen from the results that the left hand region is subjected to very high stress.
Prediction of Toughness through Evaluation of Alloying Elements Distribution Pattern at Heat-Affected Zone in Submerged-Arc Welding Process of API X70 Steel
Authors: Sharifi Majid , Arab Najmoddin , Khalaj Gholamreza
Published: December 2013

Six 56" × 19.8 mm, API X70 PSL2 pipes were produced from three different plate suppliers and then three samples in pipe transverse direction and perpendicular to welding seam were taken out from welding area of each supplier. Sampling carried out from weld metal, HAZ and base metal of each sample, then all 27 prepared samples were analyzed. Afterwards the amounts of 14 alloying elements were considered. The results showed that content of Carbon, Sulfur, Boron, Phosphorous, Copper, Manganese, Aluminum, Titanium and Molybdenum have been increased in the HAZ and Silicon, Nickel, Chrome, Vanadium and Niobium decreased. So it is predicted that an increase in Carbon, Aluminum, Phosphorous, Sulfur and Boron content, also a decrease in Silicon, Chrome and Nickel will cause a drop in the HAZ toughness and an increase in Titanium, Manganese, Copper and Molybdenum content, also decrease in Vanadium and Niobium will cause a rise in HAZ toughness.
The Analysis of Water Movement and Heat Transfer Modeling
Authors: Lu Xiao Hui , Wang Yang
Published: December 2013

Xuzhou city lies on the north of Jiangsu province. Its geological conditions are complex, water resources are deficient and environment is vulnerable. At present, water pollution in Kui river area is very serious, the water movement and heat transfer characteristics of unsaturated zone in Kui river area was studied to provide a theory foundation for predicting pollution of unsaturated zone removing and transforming. The study was considered through the rule of energy flow and nutrient cycling under different vegetation cover: temperature of soil decreases with increasing depths in most area, but different vegetation cover causes vary between variation-rate in different temperature, which some vegetation cover cause temperature of soil increases with increasing depths.
Ride Comfort Simulation of Minibus under Road Pulse Input
Authors: Li Jie , Zhu Yan Lei , Chen Shao Wei , Cui Yong Gang
Published: December 2013

The plane vibration model of minibus with seven degree-of-freedom and its vibration response variables are established according to the plane and linear assumptions. The road pulse input is expressed based on Chinese standard with number of GB/T4970-2009. Ride comfort simulation software of minibus under road pulse input is developed with Matlab and applied to ride comfort analysis of minibus under road pulse input. A minibus is selected to analyze its ride comfort and the maximum absolute value of the vibration response variables are obtained at the speed from 10 to 60 kmh-1. The results show that the model and software can be used to ride comfort simulation of a minibus under road pulse input.
User Information Security Context-Aware Services in a Cloud Environment
Authors: Jeong Hoon , Kim Nan Ju , Choi Eui In
Published: December 2013

Users in the ubiquitous mobile environment have provided services that match the surrounding context and the location of their own. As Cloud Computing has been spreading widely, users and service providers enables to use resource or service cheaply and easily without owning all the resource needed. The development of mobile devices and the spread of wireless network help share and exchange information and resources more easily. Therefore users are able to use the information and service more free than previous wire network due to development of wireless network and device. Previous studies of these form was a study on the provided service mainly, but they did not regard on user's location, environment and preference. Therefore, this paper, we use the profile and the user's situation information that contains personal information security, preferences. We are able to provide more accurate service than previous techniques through techniques and systems suggested in this paper.
Simulaion on Strap-Down Inertial Navigation System Based on Simulink/M Programming Language
Authors: Liu Yan Ling , Zhang Xin
Published: December 2013

This paper presents the basic principles and algorithms of the trap-down Inertial Navigation System, and established the mathematical model and the simulation algorithm of the Inertial Navigation System based on Matlab /Simulink blocks combined with M Programming Language. After the simulation of the system, combined the calculated data, obtained the data error. The result proved that the model is correct and effective.
Development of Multimedia Environment for Viewing the State of Stress in a Differential Element
Authors: Trautwein Leandro Mouta , Gachet-Barbosa Luísa Andréia , Yamamoto Cássio Shigeru , Gaspar Ricardo
Published: December 2013

The aim of this work is to present a tool developed in a multimedia environment of a cilitate the understanding of the state of plane stress at an infinite simal element, which is directed to lectures in Mechanics of Materials courses. This multimedia resource was developed in Java 3D API, liked an applet, as it is a simple language whose programs can run on all operating system platforms, using the virtual machineconcept. The multimedia resource determines the strains caused by forces acting in a solid body. Usingthis tool the learning process can be more efficiently, and the view of results at an differential element in the state of plane stress can be easier too.
The Mathematical Morphology Image Edge Detection Based on FPGA
Authors: Li Hui De , Zhao Lian Yu
Published: December 2013

The image edge detection algorithm is one of the most important steps in the image processing, however, while the large amount of data is need to be dealt with in the detection process, it is difficult to meet real-time requirements by using the software method. In order to improve the speed of digital image processing, An embedded processing systems based on FPGA (field-programmable gate array) detection algorithm is proposed, which takes corrosion expansion algorithm of mathematical morphology as its theoretical basis to achieve the task of image edge detection, experiments result show the method is effective and feasible, and meets the real-time requirement of the image processing.
State Feedback Robust H∞ Control for Generalized Discrete System and Simulation
Authors: Fang Chen , Shi Jiang Hong , Li Kun Yu , Wang Zheng
Published: December 2013

For a class of uncertain generalized discrete linear system with norm-bounded parameter uncertainties, the state feedback robust control problem is studied. One sufficient condition for the solvability of the problem and the state feedback robust controller are obtained in terms of linear matrix inequalities. The designed controller guarantees that the closed-loop systems is regular, causal, stable and satisfies a prescribed norm bounded constraint for all admissible uncertain parameters under some conditions. The result of the normal discrete system can be regarded as a particular form of our conclusion. A simulation example is given to demonstrate the effectiveness of the proposed method.
Study of Natural Bitumen Extracted from Oil Sands
Authors: Tileuberdi Yerbol , Ongarbaev Yerdos , Tuleutaev Berik , Mansurov Zulkhair , Behrendt Frank
Published: December 2013

In the paper physical and chemical properties of natural bitumen of oil sands were investigated. For the determination of organic part (natural bitumen) of oil sands the extraction methods was used in Soxhlet apparatus by solvent. Physical and mechanical characteristics of natural bitumen (NB) are established by standard methods: softening temperature was determined by the method Ring and Ball, depth of needle penetration was determined at apparatus Penetrometer, extensibility was determined by apparatus Ductilometer.
Low Phase Noise and Low Power Voltage-Controlled-Oscillator Using Current-Reuse Techniques for Wireless Communication Circuits
Authors: Han Tsung Han , Hsu Meng Ting , Chung Cheng Chuan
Published: December 2013

In this paper, we present low phase noise and low power of the voltage-controlled oscillators (VCOs) for 5 GHz applications. This chip is implemented by Taiwan Semiconductor Manufacturing Company (TSMC) standard 0.18 μm CMOS process. The designed circuit topology is included a current-reused configuration. It is adopted memory-reduced tail transistor technique. At the supply voltage 1.5 v, the measured output phase noise is-116.071 dBc/Hz at 1MHz offset frequency from the carrier frequency 5.2 GHz. The core power consumption is 3.7 mW, and tuning range of frequency is about 1.3 GHz from 4.8 to 6.1 GHz. The chip area is 826.19 × 647.83 um2.
Development of Software-as-a-Service Cloud Computing Architecture for Manufacturing Management Systems Based on Virtual COM Port Driver Technology
Authors: Chen Shang Liang , Wang Hsuan Pei , Chen Yun Yao , Hsu Chiang
Published: December 2013

This study proposes an innovative technology of Virtual COM Port Driver applied to the SaaS cloud manufacturing system, so that user can only via a web browser to complete all operations of system. Flexibility of the system extensions, and support manufacturing enterprise use other communications equipment at work, for example RFID products, GPS receiver. Information integration, solve each computer to be fitted Middleware to read native components and retrieve information for the inconvenience. This study proposes five-layer model of cloud manufacturing system, and through the virtualization web server to achieve cloud infrastructure layer. In particular, the Virtual Com Port Driver is deployed in the cloud infrastructure layer and middleware layer, and the signal device layer can communicate directly to the cloud infrastructure layer via the web browser. Through a case study, to implement the Virtual COM Port Driver technology to verify the cloud server can capture the local COM port successfully only via the web browser and integrate the information further.
Design of a Smart Green Energy Management System Based on DMX512 Protocol
Authors: Wang Shinn Fwu , Su Yi Zhan , Chu Yi , Chau Yuan Fong , Wei Jeng Hua , Yang Wayne , Liu An Li , Kao Fu Hsi
Published: December 2013

In this paper, a smart green energy management system based on DMX512 protocol that is established by United States Institute for Theatre Technology (USITT) is proposed. The end user can monitor and control the LED lamps and electric powers according to the information received from the sensors by means of the channels of DMX512. In addition, the different color lights including red, green, and blue lights can be achieved by means of the color-mixing methods of red, green, and blue LEDs based on photometry theory. As a matter of fact, there have been attracted much attention on the mobile devices in recent years. In the study, a mobile device with an Android platform is used to control the electric power and LED lamps according to the information received from the ZigBee module immediately. However, the smart green energy management system based on DMX512 protocol has some merits, such as in real-time control, easy operation, low cost, etc.
A Study on the Deterioration of External Wall Tiles on RC Buildings in Taiwan
Authors: Chen Chen Yu , Huang Ko Yi
Published: December 2013

It’s very common in Taiwan to use ceramic tiles as an external wall material. Even the nature of ceramic tile is stable, the deterioration such as chaps and peeling still occur on external walls, which should face the tough conditions like sunshine, raining, etc. In this study, the conditions of deterioration of ceramic tiles on exterior walls were clarified by the field investigation of townhouse, built during 1971~1990, in Kaohsiung City.After analyzing and comparing the deterioration of the above cases, the conditions of deterioration of external wall tiles, used on townhouses, were found as follows:The main deterioration of Mosaic tiles is rust stains, cracking and flaking.The main deterioration of square tiles is rust stains, efflorescence and cracking.The main deterioration of rectangular tiles is rust stains, cracking and flaking.
Novel Pile-to-Pilecap Connection Under Lateral Load
Authors: Lee Jae Ha , Kim Woo Seok , Seo Yong Won , Kim Kyeong Jin
Published: December 2013

Pile-to-pilecap connection such as in integral abutment bridges is vulnerable to lateral loads as well as seismic loads. This connection may govern the bridge strength and performance against various lateral loads. However, previous researches have merely focused on the connection between pile and pilecap. Preliminary study has investigated possible crack patterns between concrete pilecap and steel HP pile using finite element analyses. It was found that the crack patterns are sensitive to the boundary conditions specified in the simulation. The reinforcement detail specified in PennDOT DM4 was barely effective in controlling crack growing but spiral rebar was proved to be effective in delaying crack growth as well as absorbing energy capacity. In this study, two types of connection details of (1) HSS tube type and (2) removed flange type were investigated in terms of crack control. The connection with a HSS tube exhibited to be effective in prevention of crack propagations from the surface of the bottom pilecap. However, second crack was initiated from the corner region of the tube after first crack was arrested; resulting in lower energy absorption capacity compared to both spiral and removed flange details. In the connection with removed flange, concrete crack initiations were mitigated or delayed successfully.
Experimental and Analytical Investigation of Lateral-Torsional Buckling of RC Beams with Geometric Imperfections
Authors: Lee Jong Han , Kalkan Ilker
Published: December 2013

The design of reinforced concrete beams has usually focused on the ultimate flexural capacity and disregarded the lateral stability of the beams. However, the development of high-strength concrete and the implementation of new construction techniques increase the use of longer and deeper concrete beams, which makes the lateral instability a primary concern of failure in concrete bridges. In particular, the lateral stability should be more taken into consideration in the construction and erection phases due to inadequate lateral supports. Thus, an experimental study was carried out to evaluate the lateral torsional buckling of reinforced concrete beams with initial geometric imperfections. The lateral flexural and torsional rigidity expressions, which could account for the flexural, torsional, and shrinkage cracking of concrete, the contribution of longitudinal and shear reinforcement, and the nonlinearity of materials, were proposed for rectangular reinforced concrete beams. Finally, this study proposed an analytical formula to estimate the buckling loads of initially imperfect reinforced concrete beams. The estimates of the study showed close agreement with the experimental values.
Influence of Angle Thickness towards Stiffness and Strength Prediction for Cold-Formed Steel Top-Seat Flange Cleat Connection
Authors: Lee Yeong Huei , Siang Tan Cher , Tahir M.Md. , Mohammad Shahrin , Shek Poi Ngian , Lee Yee Ling
Published: December 2013

For the connection stiffness and strength prediction, Eurocode has showed an inadequacy as it will be affected by the thin-walled behaviour of cold-formed steel in actual structural performance. This paper performs a study on the connection stiffness prediction for cold-formed steel top-seat flange cleat connection with various angle thickness. Validated finite element modelling technique is applied for further advanced investigation. From the developed finite element models, it was realized that Eurocode has overestimated by the analytical stiffness prediction using component method for the studied connection which reduces the structural integrity in the design stage. A new proposal on connection stiffness prediction with influence of angle thickness for cold-formed steel top-seat flange cleat connection is presented to assist practicing engineers to design the cold-formed connection in light steel framing.
Seismic Rehabilitation of Beam-Column Joints Using FRP Sheets and Buckling Restrained Braces
Authors: Kim Hee Cheul , Kim Dae Jin , Kim Min Sook , Lee Young Hak
Published: December 2013

The purpose of this study was to evaluate seismic performance of rehabilitated beam-column joint using FRP sheets and Buckling Restrained Braces (BRBs) and provide test data related to rehabilitated beam-column joints in reinforced concrete structures. The seismic performance of total six beam-column specimens is evaluated under cyclic loadings in terms of shear strength, effective stiffness, energy dissipation and ductility. The test results showed wrapping FRP sheets can contribute to increase the effect of confinement and the crack delay. Also retrofitting buckling restrained braces (BRBs) can improve the stiffness and energy dissipation capacity. Both FRP sheets and BRBs can effectively improve the strength, stiffness and ductility of seismically deficient beam-column joints.
An Investigation into Optimized Ti-6Al-4V Titanium Alloy Equal Channel Angular Extrusion Process
Authors: Chen Dyi Cheng , Li Yi Ju , Tzou Gow Yi
Published: December 2013

The shear plastic deformation behavior of a material during equal channel angular (ECA) extrusion is governed primarily by the die geometry, the material properties, and the process conditions. This paper employs the rigid-plastic finite element (FE) to investigate the plastic deformation behavior of Ti-6Al-4V titanium alloy during ECA extrusion processing. Under various ECA extrusion conditions, the FE analysis investigates the damage factor distribution, the effective stress-strain distribution, and the die load at the exit. The relative influences of the internal angle between the two die channels, the friction factors, the titanium alloy temperature and the strain rate of billet are systematically examined. In addition, the Taguchi method is employed to optimize the ECA process parameters. The simulation results confirm the effectiveness of this robust design methodology in optimizing the ECA processing of the current Ti-6Al-4V titanium alloy.
Design and Manufacturing of Drug Eluting Depot Stents with Micro-Sized Drug Reservoirs
Authors: Hsiao Hao Ming , Yeh Chun Ting , Wu Tsung Yuan , Wu Li Wei , Huang Bor Hann , Yang Hsiao Nan
Published: December 2013

The effects of micro-sized through-hole drug reservoirs on several key clinical attributes of the drug eluting depot stent were investigated. Finite element models were developed to predict the mechanical integrity of a balloon-expandable stent at various stages such as manufacturing and deployment, as well as the stent radial strength and fatigue life. Results show that (1) creating drug reservoirs on a stent could impact the stent fatigue resistance to certain degrees, and (2) drug reservoirs on the stent crowns led to much greater loss in all key clinical attributes than reservoirs on other locations. Based on these findings, an optimized depot stent was proposed/manufactured and proven to be a feasible design.