bluuebunny/crossref_metadata_2025 huggingface dataset:
Active Transport Can Greatly Enhance Cdc20:Mad2 Formation
Authors: Ibrahim Bashar , Henze Richard
Published: October 2014

To guarantee genomic integrity and viability, the cell must ensure proper distribution of the replicated chromosomes among the two daughter cells in mitosis. The mitotic spindle assembly checkpoint (SAC) is a central regulatory mechanism to achieve this goal. A dysfunction of this checkpoint may lead to aneuploidy and likely contributes to the development of cancer. Kinetochores of unattached or misaligned chromosomes are thought to generate a diffusible “wait-anaphase” signal, which is the basis for downstream events to inhibit the anaphase promoting complex/cyclosome (APC/C). The rate of Cdc20:C-Mad2 complex formation at the kinetochore is a key regulatory factor in the context of APC/C inhibition. Computer simulations of a quantitative SAC model show that the formation of Cdc20:C-Mad2 is too slow for checkpoint maintenance when cytosolic O-Mad2 has to encounter kinetochores by diffusion alone. Here, we show that an active transport of O-Mad2 towards the spindle mid-zone increases the efficiency of Mad2-activation. Our in-silico data indicate that this mechanism can greatly enhance the formation of Cdc20:Mad2 and furthermore gives an explanation on how the “wait-anaphase” signal can dissolve abruptly within a short time. Our results help to understand parts of the SAC mechanism that remain unclear.
Enhanced Production of Bioactive Isoprenoid Compounds from Cell Suspension Cultures of Artemisia annua L. Using β-Cyclodextrins
Authors: Rizzello Francesca , De Paolis Angelo , Durante Miriana , Blando Federica , Mita Giovanni , Caretto Sofia
Published: October 2014

Plant cell cultures as valuable tools for the production of specific metabolites can be greatly improved by the application of elicitors including cyclodextrins (CDs) for enhancing the yields of the desired plant compounds. Here the effects of 2,6-dimethyl-β-cyclodextrins (DIMEB) on the production of carotenoids and quinones from Artemisia annua L. cell suspension cultures were investigated. The addition of 50 mM DIMEB induced an early increase of intracellular carotenoid and quinone contents, which could be observed to a higher extent for lutein (10-fold), Q9 (3-fold) and Q10 (2.5-fold). Real Time PCR analysis revealed that the expression of 1-deoxy-d-xylulose-5-phosphate reductoisomerase (DXR) gene in DIMEB treated cell cultures after three days was 2.5-fold higher than in untreated samples, thus suggesting that the DIMEB induced increase of carotenoids and quinones could be due to the induction of the plastidial isoprenoid biosynthetic route. In addition, the DIMEB treatment induced an enhanced release of carotenoids and quinones into the culture medium of A. annua cell suspension cultures possibly due to the ability of CDs to form inclusion complexes with hydrophobic molecules.
A Comparison of the Effects of Oral Glutamine Dipeptide, Glutamine, and Alanine on Blood Amino Acid Availability in Rats Submitted to Insulin-Induced Hypoglycemia
Authors: Minguetti-Câmara Vania , Marques Any , Schiavon Fabiana , Vilela Vanessa , Bruschi Marcos , Bazotte Roberto
Published: October 2014

We compared the effects of oral administration of high-dose or low-dose glutamine dipeptide (GDP), alanine (ALA), glutamine (GLN), and ALA + GLN on the blood availability of amino acids in rats submitted to insulin-induced hypoglycemia (IIH). Insulin detemir (1 U/kg) was intraperitoneally injected to produce IIH; this was followed by oral administration of GDP, GLN + ALA, GLN, or ALA. We observed higher blood levels of GLN, 30 min after oral administration of high-dose GDP (1000 mg/kg) than after administration of ALA (381 mg/kg) + GLN (619 mg/kg), GLN (619 mg/kg), or ALA (381 mg/kg). However, we did not observe the same differences after oral administration of low-dose GDP (100 mg/kg) compared with ALA (38.1 mg/kg) + GLN (61.9 mg/kg), GLN (61.9 mg/kg), or ALA (38.1 mg/kg). We also observed less liver catabolism of GDP compared to ALA and GLN. In conclusion, high-dose GDP promoted higher blood levels of GLN than oral ALA + GLN, GLN, or ALA. Moreover, the lower levels of liver catabolism of GDP, compared to ALA or GLN, contributed to the superior performance of high-dose GDP in terms of blood availability of GLN.
Révolutions technologiques et représentations du monde. Au risque de l'expérimentation
Authors: Bretagnolle Anne , Robic Marie-Claire
Published: October 2014

Révolutions technologiques et représentations du monde.

Au risque de l'expérimentation — A. Bretagnolle et M.-C. Robic.

Depuis la fin du XIXe siècle, les géographes étudient les effets de l'accroissement des vitesses et des possibilités nouvelles de transfert, de l'information. Leurs recherches concluent à des réorganisations du monde, créatrices de déformations et de structures spatiales discontinues, et non à la réduction uniforme que supposent certaines représentations de l'impact des NTIC (Nouvelles technologies de l'information et de la communication). Dans cet article qui en étudie les modes successifs, et les auteurs expliquent l'accroissement des inégalités dans les systèmes de peuplement par des processus de sélection liés à l 'accessibilité des lieux. Dans un second temps, leurs recherches méthodologiques rendent compte d'un espace relatif, référé à des distances anthropologiques évaluées en temps ou en coût, et des constructions théoriques destinées à comprendre l'évolution des systèmes de villes. Le renforcement de la complexité de l'organisation des plus grandes métropoles et leur mise en réseau, à l'échelle mondiale, y sont soulignés. Plusieurs éléments restent en discussion, notamment celui sur la nouveauté ou non de ces processus de mondialisation, ou sur l'évolution de la structuration hiérarchique des réseaux de ville ; maintien, voire renforcement des inégalités ou affaiblissement des contrastes, voire émergence d'un certain polycentrisme ?
La construction de «l'éternité» romaine
Authors: Djament Géraldine
Published: October 2014

La construction de «l'éternité» romaine — G. Djament.

Cet article s'interroge sur les facteurs de permanence urbaine à partir du cas de la « Ville Eternelle ». La périphrase se trouve mise en perspective par les débats contemporains portant sur le développement durable. Trois grandes hypothèses expliquent la résilience romaine de l'Antiquité à nos jours. Tout d'abord, même après la chute de l'Empire, le décalage entre le temps des représentations de l'espace (l'image d'une ville) qui dure plus longtemps que le temps des fonctions urbaines (sa puissance politique et économique). En outre, les temporalités romaines s' expliquent par de constantes interactions avec les rythmes chrétiens et européens. La ville a en effet structuré sur le long terme une conception du temps, tout en s 'adaptant régulièrement aux bouleversements géopolitiques de cette civilisation. Enfin, les temporalités sont véritablement manipulées à Rome afin de légitimer le pouvoir. L'héritage urbain est régulièrement soumis à une sélection spatio-temporelle rapprochant des périodes éloignées. Ces conditions font de la Ville Eternelle un archétype de tissu urbain « polygénique » qui invite à penser les temporalités urbaines sur un mode complexe, non-linéaire et non-stratifié.
L'intraduisible : ombilic de l'œuvre de parole
Authors: Gori Roland
Published: October 2014

Au cours d’un entretien avec Rajaa Stitou, Roland Gori évoque les figures anthropologiques des discours sociaux et normatifs contemporains, le robot et l’animal, pour rendre compte de la réduction de l’humain à un « être de signaux » et de « connexion ». Alors même que la catachrèse se révèle comme la figure de style qui féconde les découvertes humaines, la folie normative contemporaine fabrique l’illusion que nos langages de machine pourraient en finir une fois pour toutes avec l’intraduisible de la langue. Ce qui revient à penser que l’on pourrait une fois pour toutes se débarrasser de la culpabilité qui fonde le lien social et l’altérité.
L'accent, une langue qui résiste
Authors: Masson Céline
Published: October 2014

Dans cet article, nous nous intéresserons à l’accent en proposant l’idée qu’il est une langue du dessous. Une langue de transport d’autres langues dissimulées sous la langue parlée et qui introduisent toute la géographie intérieure de l’exil. L’accent désigne bien souvent l’étranger de la langue du pays et cet accent dérange car il perturbe la musique bien connue de la langue vernaculaire. Le locuteur introduit une impureté dans la langue dite maternelle mais cette impureté est une résistance à trahir sa langue maternelle, qu’il met en concurrence avec une langue d’adoption. Traces mémorielles de langue(s) sous la langue qui font irruption « sur » la langue comme un symptôme. Il est intéressant d’entendre les tours de langue que le sujet « déplacé » peut infliger à la langue du pays d’accueil, une manière de négocier avec sa langue maternelle en faisant un « écart » avec la langue du pays d’accueil.
Les apports de la méthode d'observation du bébé dans sa famille selon Esther Bick
Authors: Deronzier Déborah
Published: October 2014

L’auteur propose une réflexion sur l’articulation entre la pratique et la recherche cliniques en psychanalyse. Elle s’appuie sur la méthode d’observation psychanalytique du bébé dans sa famille développée par Esther Bick, sur ses effets de soin et sur ses effets de formation à la pratique clinique et à la recherche en psychanalyse, pour soutenir la valeur scientifique et euristique de l’approche clinique.
Lorsque l'œuvre fait lien
Authors: Ducombs Anne-Sophie
Published: October 2014

La vie du compositeur Robert Schumann permet de s’interroger sur la fonction de la création. Plusieurs éléments et symptômes laissent supposer une psychose maniaco-dépressive : humeur dépressive, désintérêt pour le monde extérieur, autodépréciations, idées de mort, hallucinations, ainsi qu’un rapport au corps particulier. R. Schumann invente non pas une solution, mais des solutions pour suppléer à la forclusion du Nom-du Père. En effet, nous pouvons faire l’hypothèse que sa paralysie de la main est une suppléance, un traitement du réel par le réel. Il s’appuie aussi sur des identifications imaginaires, ses maîtres et sa compagne Clara. Il semble que ces suppléances lui permettent de faire de la création musicale un sinthome. Cependant, à un moment donné, ces solutions subjectives ne tiennent plus. L’émergence d’un réel à travers la rencontre d’Un-père et sa nomination à un poste de directeur musical semblent amener des éléments d’explication quant au déclenchement de la psychose.
Le corps, son image et le désir du scientifique dans la fiction cinématographique
Authors: Trichet Yohan , Marion Élisabeth
Published: October 2014

La logique du discours de la science nécessite l’exclusion du sujet de l’inconscient et l’ignorance de la position impossible du savant. Au cours des siècles, le statut de l’Autre, comme instance érigeant des limites à la jouissance, a évolué. La figure de Dieu, qui remplissait autrefois cette fonction, a chuté, dévoilant ainsi l’inexistence de l’Autre. La fiction, quand elle s’intéresse à la science, est un espace narratif privilégié pour interroger cette logique et ses conséquences : les affres du savant et le surgissement d’un objet monstrueux. Les auteurs de cet article proposent d’examiner comment la fiction cinématographique traite ces questions posées par les avancées de la science aux XIX e  et XXI e  siècles en prenant appui sur le Frankenstein de Kenneth Branagh (1994) et La piel que habito de Pedro Almodovar (2011).
Gouverner par les labels
Authors: Bergeron Henri , Castel Patrick , Dubuisson-Quellier Sophie
Published: October 2014

De nombreuses politiques publiques qui visent à réguler, directement ou indirectement, les conduites individuelles ou collectives s’appuient sur le déploiement d’un type d’instrument que nous qualifions de « label ». En prenant pour cas d’étude la comparaison de la politique de la consommation durable et celle de la lutte contre l’obésité, et en nous inspirant de l’analyse des dispositifs de sécurité menée par Foucault (2004), nous proposons de mettre en évidence certaines des caractéristiques essentielles de ce mode de gouvernement. Nous montrons en particulier que celui-ci joue sur la volonté que manifestent les acteurs pour se positionner et se distinguer les uns par rapport aux autres dans un champ concurrentiel donné, afin de les orienter, de manière souple, vers des options que les acteurs de l’action publique considèrent comme collectivement bénéfiques. La logique de ce mode de gouvernement n’est pas la stabilisation d’un standard qui permette l’uniformisation des entités et pratiques d’un champ, mais la création continue de labels toujours plus exigeants dont seule une partie des membres pourra prétendre s’orner.
Un changement politisé dans la politique de défense
Authors: Béraud-Sudreau Lucie
Published: October 2014

En 2000, l’instruction des demandes d’autorisation d’exportations d’armement est retirée de la direction du ministère de la Défense responsable du soutien à ces exportations, afin de renforcer les procédures de contrôle. Puis, cette réforme est annulée en 2008, afin cette fois-ci de renforcer le soutien à l’export. Comment expliquer ce revirement, qui coïncide avec des phases d’alternance politique, ce alors que la littérature considère la politique de défense comme insensible aux changements de majorité ? Grâce à l’approche programmatique, cet article montre que le contenu du changement s’explique par la politisation de la répartition des fonctions de contrôle et de soutien des ventes d’armes par des acteurs politico-administratifs. Toutefois, l’alternance seule n’explique pas le timing du changement, il faut pour cela porter attention aux rapports de force entre acteurs.
L'Afrique face aux nouvelles ambitions de la Russie
Authors: Elzein Derek
Published: October 2014

En dépit d’une instabilité chronique, l’Afrique est un continent convoité par toutes les grandes puissances. Parmi celles-ci, la Russie jouit de nombreux atouts face à la concurrence des autres pays. Historiquement, l’URSS entretenait d’étroites relations avec de nombreux pays du continent africain. Aujourd’hui, les domaines d’activité les plus favorables aux entreprises russes en Afrique sont ceux liés à l’exploitation des matières premières, ainsi que le domaine de l’armement. Si des transferts de technologies aux pays africains s’opèrent parfois, la crainte du terrorisme demeure forte pour les Russes et les Occidentaux. Malgré son implication dans de nombreux projets, visant notamment la maîtrise des ressources naturelles, la Russie n’est de loin pas le plus grand investisseur en Afrique. Enfin la Russie participe également à l’aide au développement, par les canaux de l’ONU et à travers les programmes spécifiques d’aide à l’Afrique. Autant complémentaires que concurrents, les Occidentaux et les Russes se font face en Afrique comme ailleurs.
La censure militaire et la surveillance politique des étrangers en Australie occidentale pendant la Grande Guerre (1914-1919)
Authors: Dorvidal Jérôme
Published: October 2014

Au début de la Grande Guerre, la seule institution susceptible d’endosser la responsabilité d’assurer la sécurité nationale était l’Intelligence militaire. Certes, dans les villes de Sydney ou de Melbourne, la censure militaire a été perçue par de nombreux citoyens comme une atteinte à la démocratie. Mais en Australie occidentale, l’État le plus provincial à cette époque, la surveillance politique des Allemands et Autrichiens était vraiment poussée : chaque cas signalé était l’objet d’un examen approfondi par la police étatique ou les services du renseignement militaire. En résumé, cet article propose d’étudier la diversité des cas considérés comme suspects par l’Intelligence militaire et les réactions des habitants d’Australie occidentale dans un tel climat de suspicion
Le choix de la formation : une affaire de sexe ?
Authors: Birr Lorraine
Published: October 2014

La contribution aborde l’articulation entre les choix de formation sexuellement typiques et la reproduction de la ségrégation sexuelle sur le marché du travail en Allemagne. L’étude analyse précisément la signification du genre dans le choix d’une profession et l’influence de l’espace social ainsi que du parcours de formation dans le cadre de groupes de discussion avec des jeunes femmes. Les résultats montrent que les stéréotypes de la féminité et de la masculinité constituent un cadre de référence fondamental dans la recherche d’une profession. Les choix de formation sexuellement typiques relèvent des représentations de la normalité dans le contexte social de la future entreprise et expriment l’exigence d’une reconnaissance sociale. Les jeunes femmes choisissent ainsi prioritairement les professions féminines en dépit d’un éventuel intérêt pour des professions masculines.
Fin du rêve
Authors: Bruno Pierre
Published: October 2014

Le roman de Murakami Kafka sur le rivage donne à lire que l’au-delà de l’Œdipe n’est pas accessible sans l’accomplissement onirique des deux interdits qui le composent. Dans la variété des modalités par lesquelles un sujet forge une solution pour atteindre cet au-delà, on peut identifier, à condition d’écarter toute pusillanimité, ce que le discours capitaliste nous forcerait à tenir pour un libéralisme sexuel.
Léonie Chaptal, un leader visionnaire
Authors: Debout Christophe , Magnon René
Published: October 2014

Léonie Chaptal occupe une place prédominante dans le « panthéon » infirmier français. Sa vie fut consacrée à concevoir, à mettre en œuvre et à installer un modèle de soins intégré abordant les différents déterminants de la santé au début du XX e siècle. Les infirmières, notamment les infirmières visiteuses, y tiennent une place essentielle. Le milieu social dont elle est issue, sa personnalité mais aussi les choix stratégiques de son action ont contribué à faire d’elle un leader écouté des décideurs. Elle a fortement contribué à façonner la profession infirmière en France.
EFFECTS OF PELVIC AND FEMORAL POSITIONING ON CANINE NORBERG ANGLE MEASUREMENTS AND TEST–RETEST RELIABILITY: A COMPUTED TOMOGRAPHY-BASED SIMULATION STUDY
Authors: Wu Ching-Ho , Lin Cheng-Chung , Lu Hsuan-Lun , Lu Tung-Wu , Yeh Lih-Seng
Published: October 2014

Canine hip dysplasia is a common disease in dogs, often diagnosed by using the Norberg angle (NA), an index for the laxity of the hip joint. Measurement of the NA can be affected by the pelvic and femoral positioning during imaging, the effects and test–retest reliability of which have not been documented. To bridge the gap in knowledge, computed tomography data from 11 Labrador Retriever dogs were obtained and used to generate synthetic ventrodorsal radiographs of the hip for NA measurements via a perspective projection model. Twenty-five synthetic radiographs of the hips were generated at positions defined by combinations of five pelvic tilt angles (-20° to 20° at 10° intervals) and five femoral elevation angles (from full extension to 40° at 10° intervals). For each radiograph, the NA was measured three times by each of the two experienced veterinarian examiners. It was found that both the increase in caudal pelvic tilt and femoral elevation increased the measured NA, although the intra- and inter-examiner reliability was very good for a given hip position. The current results suggest that careful positioning of the pelvis and femur during radiographic imaging is critical for accurately measuring the NA, and thus the laxity of the hip, for the clinical diagnosis of hip dysplasia.
Assessing Impact of ICT Intercultural Work
Authors: Rickard Angela , Grace Alma R.C. , Austin Roger S.P. , Smyth Jane M.
Published: October 2014

This article reports on a school-based ICT initiative, called Dissolving Boundaries (DB) which links primary, (pupils aged 5-11), post-primary (pupils aged 12-18) and special schools (pupils aged 5-18) in partnerships across the border between Northern Ireland and the Republic of Ireland. The aim of the research was to investigate if participation in DB was associated with an increased awareness and understanding of life on the other side of the border. The ICT skills of pupils were also probed. Two cohorts of pupils were used in the study, one which had taken part in the Dissolving Boundaries program during an academic year and another cohort of similar age in the same schools, which had not taken part. Findings suggest that participation in the program contributed to students' knowledge and awareness in general of the other jurisdiction. In terms of collaborative work, a large majority of DB pupils agreed that they could learn something new from working with another school. Participating pupils in the DB program showed much higher competence in those ICT skills associated with communication and collaboration than their non-participant peers.
The Impact of Authentic Learning Exercises On Pre-service Teachers' Motivational Beliefs towards Technology Integration
Authors: Banas Jennifer R. , York Cindy S.
Published: October 2014

A quasi-experimental study explored the impact of authentic learning exercises on preservice teachers' motivational beliefs and intentions to integrate technology, as well as the ability of those beliefs to predict intentions. A questionnaire was used to assess 104 preservice teachers' expectancy-value related motivational beliefs, namely intrinsic and extrinsic goal orientations, task value, self-efficacy, and control of learning. Results indicated authentic learning exercises might have enhanced motivational beliefs, particularly self-efficacy and intrinsic goal-orientation. Also, motivational beliefs predicted intentions to integrate, with task value predicting significantly.
A Protection Scheme of Ac Side Faults of Dc Distribution System
Authors: Gao Yi Bo , Zeng Jia Si , Qiu Peng , Lu Yi , Huang Xiao Ming , Xu Xi Dong
Published: October 2014

Dc distribution systems are multiterminal systems characterized by complexity and mixed operation of ac and dc. Ac side faults are more likely to happen and may cause more serious consequences compared with dc transmission systems, thus must be considered seriously. In this paper, ac side faults of the prototype dc distribution system under high impedance grounding scheme are analyzed in detail. Fault characteristics of dc side voltages and currents under ac side faults are drawn and sorted. A protection scheme of ac side faults is proposed based on dc voltage and current measurements. The effectiveness of the protection scheme proposed is demonstrated by simulation under PSCAD/EMTDC.
Reliability Evaluation of Mid-Voltage DC Distribution Network with Multiple Topologies
Authors: Zeng Jia Si , Gao Yi Bo , Yang Feng , Xu Xi Dong , Qiu Peng , Lu Yi , Huang Xiao Ming
Published: October 2014

With the development of power electronics, DC distribution network has advantages in power supplying for DC loads, saving transmission loss of reactive power and improving power quality, when compared with traditional AC distribution network. Since DC distribution network has several multiple topologies, lots of power electronic components and DGs, the traditional reliability evaluation methods aren’t applicable any more. Hence, the reliability models of power electronics and DGs are built in this paper, and a hybrid method combining minimum-cut with non-sequential Monte Carlo is presented. Moreover, three topologies of mid-voltage DC distribution network are designed based on IEEE RBTS bus6, by which the feasibility of the method is validated. Results show that two-terminal network is more reliable than radial and looped network.
An Equivalent Modeling for Synthesis Load of Distributed Network with Small Hydropower
Authors: Xu Zai De , Sun Guo Cheng , Pan Ben Ren , Xu Ning , Li Chao Qun , Ma Hong Zhong
Published: October 2014

A distributed network with small hydropower is taken as research subject, and in PSASP environment a simulation network is constructed, which is based on the network’s connection mode and operation data. At first, this paper give a description of 3rd mode of small hydropower generator, and generalize common analysis methods of synthesis load, and on this basis lists three means that used for aggregating parameters, then choose weighted average method to aggregate necessary parameters of Small hydropower generators. Secondly, the operation data is fully used to determine the equivalent impedance of the network. Finally, in order to verify the accuracy and feasibility of the method raised by the paper, the author make a comparison of small hydropower generators’ relative rocking curve before and after equivalence, meanwhile, analyzes change regulation of active power in contact line before and after the equivalence.
Decision Tree Algorithm for Real-Time Identification of Critical Voltage Control Areas
Authors: Lis Robert Andrzej
Published: October 2014

Voltage stability, is driven by the balance of reactive power in a transmission power grid, and depends on the reactive power produced by the power stations and the value generated by the capacitive power lines and static compensators. Of particular interest is to identify those Critical Voltage Control Areas (CVCAs) in a transmission power grid, that may suffer reactive power deficiencies. Since speed of analysis is critical for on-line applications the approach will address the development of a scheme whereby CVCAs can be identified using data mining techniques from on-line power system snapshot (PMU). The database for storing/retrieving result of Modal Analysis can be used to construct decision trees (DTs) for each of the identified CVCAs using key power system attributes. The objective of this paper is to propose an new real-time methodology for identification of CVCAs, which is key function for preventive and remedial actions against instability of the Electrical Power System (EPS). This is carried out under various system operation and contingency conditions by using off-line trained decision trees generated and on-line PMU measurements. Numerical results on the 12-bus test system, shows the suitability and effectiveness of the proposed method.
Efficiency of Vortex Tube Enclosure Cooling
Authors: Rattanongphisat Waraporn
Published: October 2014

A vortex tube offers an alternative cooling with advantages of simplicity and compact. Using a natural refrigerant, a vortex tube enclosure cooling is environmentally benign. In this paper, the performance of a vortex tube enclosure cooling, VTEC, is investigated experimentally. The VTEC system comprises of the vortex tube cooling, an enclosure with a volume space of 0.045 m3, an air compressor, a compressed air storage tank and a compressed air line. The VTEC system is tested for its efficiency and cooling potential in the laboratory. An operating condition is controlled by a pressure regulator for an inlet air pressure of 3 bars, for energy saving, and a cold flow rate is adjusted by a needle valve near the hot exit of a vortex tube for the cold fraction between 0 and 1. Accordingly, the analysis of experimental data shows the maximum isentropic efficiency of the vortex tube enclosure cooling is 0.37 at the cold mass fraction of 0.45. Air temperature in the enclosure is about 13°C in average.
Stabilization and Control of an Autonomous Quadcopter
Authors: Cooper Yashaan Nari , Ganesh Ram R.K. , Kalaichelvi V. , Bhatia Vishank
Published: October 2014

A Quadcopter is a helicopter which has four equally spaced rotors, usually arranged at the corners of a square body. Due to four independent rotors, the need for a swashplate mechanism is palliated. The swashplate mechanism was required to allow the helicopter to utilize more degrees of freedom, but the same level of control could be obtained by adding two more rotors. The development of Quadcopter was stalled until very recently, because controlling four independent rotors was proven to be incredibly difficult and impossible without electronic assistance which has made even completely autonomous control of quadcopters feasible for commercial, military, and even hobbyist purposes. The paper offers dynamic simulation of brushless DC motor speed control used in a quadcopter and also focuses on design and implementation of PID (Proportional-Integral-Derivative) controller through simulation for proper controlling of altitude roll and pitch in a quadcopter. The effectiveness of proposed controller can be analyzed by considering the performances of peak time, settling time and overshoots for various set point changes in the throttle movements. All simulation studies have been carried out using the MATLAB software.
Robust Control of Weight Compensation of the Sections of Spascraft on the Weightlessness Simulation Bench
Authors: Ezangina Tatiana Al. , Gayvoronskiy Sergey An.
Published: October 2014

The structure of the robust stabilization system of cable tension for the test bench of weightlessness simulation was developed. The algorithm of a parametric synthesis of the robust PI controller based on the coefficient method and the criterion of maximum degree of stability was suggested. The operability of the synthesized robust system was confirmed by the results of digital simulation.
Strategy of Intelligent Energy-Saving Optimization Control and Energy Consumption Analysis on Regulator Control System of Closed Greenhouse
Authors: Zhang Min Gyu , Wu Guang Hua , Liu Feng
Published: October 2014

Adopting the integrated TOPSIS intelligent energy optimization control strategy, and compared to conventional single control strategy on energy consumption of greenhouse equipment under closed condition, this paper arrives at the best energy saving optimization control strategy with comprehensive benefits. The result shows that, integrated intelligent optimizing control was obviously more energy saving compared to those did not take optimization control. Specific results as follows: TOPSIS integration strategy with energy saving of 725.39kwh, energy-saving rate of 44.19%.This shows that the proposed integrated intelligent energy optimization control strategy and energy saving effect is remarkable.
Estimation of Losses on 3Φ Nano Coated Induction Motor
Authors: Selvaraj D. Edison , Vijayraj R. , Kumar M. Raj , Dhivya G. , Sugumaran C. Pugazhendhi , Joshi M. Rajmal , Krishnamoorthi D. , Ganesan J. , Geethadevi S. , Kumar S. Dinesh
Published: October 2014

In this recent decades, there was a significant growth in the applications of nano technology in the field of electrical and electronics engineering. In this research paper, the estimation of the different types of losses on a normal and nano coated three phase induction motor was done and hence the results were compared with each other. From these researches, it found that the mechanical losses were reduced by 33.33% in the motor after nano coating whereas stator iron losses were reduced by 13.8%. Stator losses were reduced up to 16.7% by coating the windings of the motor with the enamel filled with nano fillers of SiO2 and Al2O3 whereas rotor copper losses were high in the nano coated motor. The output mechanical power developed by the normal motor was increased by 39% with the application of the nano fillers to the enamel used for the coatings of the windings of the motor whereas the gross rotor torque was improved by 42%. The power factor of the motor was also improved by nano coating by 15.5%.
Moving Object Tracking Using Multiple Views and Data Association
Authors: Ahn Young Shin , Mohammed Ahmed , Choi Jae Ho
Published: October 2014

In this paper, a moving object tracking method using multiple views of the same scene taken by three cameras are presented. The object of interest is the pedestrian in the street. Unlike the single view method, the proposed multi-view method can effectively exploit extra information available in the other views when the object of interest in one of the views falls into an occlusion or clutter environment. Making a relation of an object detected in one view with the ones in the other views is critical and it is obtained by data association. The simulation results show a significant performance improvement over the conventional one.
Proper Features Extraction from the Multiple Sclerosis Disease Postural Disorders for Decision Support System Definition
Authors: Pourakbari Hakimeh , Sarbaz Yashar , Parvin Jalal , Vojudi Mohammad Hossein
Published: October 2014

Multiple Sclerosis (MS) is one of the most common neurological diseases that it is often progressive and disabling. Its main cause is destruction of myelin sheaths by the immune system. Myelin damage seriously affects people’s physical activities, such as postural impairments. Early detection of the disease is very important in disease management. Unfortunately, currently there is no definite test for MS diagnosis. Of course, there are some tests that help to confirm the diagnosis in advanced stages of the disease butnone of them can independently confirm the disease and have some restrictions and errors. It seems that quantitative analysis of movement disorders especially postural disorders can be helpful in diagnosis of MS even in its early stages. In this study, posturalimpairment was studied. First postural disorders were extracted, then obtained signals were processed quantitatively sovariance and proper frequency features were extracted. At the end, using statistical tests it was shown that these features were significantly different. Therefore based on the results it is possible to design a classifier that can be a firm basis for presenting Decision Support System (DSS) for multiple sclerosis diagnosis.
A Study on Regression Model Using Response Surface Methodology
Authors: Nooraziah Ahmad , Tiagrajah V. Janahiraman
Published: October 2014

Response Surface Methodology (RSM) mostly employs statistical regression method as it is practical, economical and relatively easy to use. The first and second order polynomial equation was developed using RSM. This polynomial model usually refers as a regression model. In this research, the objective is to find the best response surface method to model three factors and three levels parameters in machining. From the study, the Box-Behnken Design can develop a good regression model rather than Central Composite Design or Full Factorial Design. While, the second order regression model has proved to be more effective in predicting the performance of the given data set.
Validation of the Developed Multi-Gas Monitoring System
Authors: Cortez Crystalynne D.
Published: October 2014

The study was a validation of a developed gas monitoring system. The objective of the study was to determine the accuracy of the prototype in identifying gas concentrations. Experimental research method was utilized in the study. In evaluating the system’s ability to sense carbon monoxide, toluene, methane, liquefied petroleum gas (LPG), smoke and ammonia, three trials tests using cigarette smoke, kitchen lighter gas and aromatic spirit of ammonia were conducted. The device was found to be sensitive with toluene, ammonia, smoke, carbon monoxide, LPG and methane. The system attained the accuracy of 90.10% in detecting LPG and 97.32% for methane using kitchen lighter gas test; 79.81% for carbon monoxide and 80% for smoke using the cigarette smoke test; and 85.54% for ammonia and 71.93% for toluene. In addition, an accuracy of 95.39% was attained as the device was compared to the reading of an existing PETC device in measuring carbon monoxide.
Vibration Monitoring Using Wavelets Transform Feature Extraction Algorithm and Technique
Authors: Paul Okuwobi Idowu , Lu Yong Hua
Published: October 2014

Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point. The oscillation may be periods such as the motion of a pendulum or random such as the movement of tire on a gravel road. Vibration causes waste of energy and creates unwanted sound-noise. Monitoring such process generally possess a big problem especially for a system. The present traditional single resolution techniques could not solve this problem, coupled with the Fourier transform which seems to be one of the best method in analyzing and monitoring vibration in machineries or machinery components.This paper present a new algorithm using wavelet- packet based feature in classification of vibration signals. This study explores the feasibility of the wavelet packet transform as a tool in search for features that may be used in the detection and classification of machinery vibration signals. By formulating a systematic method of determining wavelet packet based features that exploit class specific differences among interested signals, which avoid human interaction. This new algorithm provide more effective method to achieve robust classification than traditional single resolution techniques. The new algorithm in wavelet transform techniques proved to be more efficient, better analysis, and provides better results with minimum error than any existing method.
Railway Track Irregularity Data Mining and Time Series Trend Forecasting Research
Authors: Zhou Ge
Published: October 2014

Railway track ride is one of the important indicators of the state of the tracks,This article making railway track irregularity data mining,The paper railway track irregularity data mining,data analysis implied regularity and A mathematical model to predict the time-series trends in research,Analysis of the data implied regularity and Build mathematical model getting on time series trend forecasting research.
A New Calibration Method for Backscatter Signal in a Side Beam X-Ray Detection System
Authors: Chen Jia Min , Li Wei  Jiao , Shen Tian Ming , Chang Qing Qing
Published: October 2014

This paper shows a method to calibrating the non-uniformity of the x-ray backscatter image in a side-beam x-ray detection system. The flying spot of x-ray beam cross the luggage under detection per cycle, and every point of the detector being irradiated by flying spot can be taken as an assumed detector. Using calibrators of different thickness and combined with the corresponding mathematical model, the greyscale of the image is uniformed and calibration is achieved.
Chaotic Genetic Algorithm for Wavefront Correction in Adaptive Optics
Authors: Kotiang Stephen , Choi Jae Ho
Published: October 2014

Chaotic genetic algorithm (CGA) is presented as an optimization algorithm for sensorless adaptive optics system to compensate atmospheric wave aberration. Chaos search strategy is incorporated into standard genetic algorithm by the logistic function that possess convergent, bifurcating, and chaotic characteristics during evolution to control the convergence of genetic algorithm. A real number encoding method is adopted in the search process and CGA is used to control a 61-actuator deformable membrane mirror (DM).The algorithm uses light intensity detected on the focal plane as the objective function to optimize, and the simulation results show CGAperforms faster than GA and thus can effectively be used in AO systems.
Effect of Solution Casting Temperature on Characteristic of Nafion®-Mordenite Composite Membrane for Direct Methanol Fuel Cell
Authors: Apichaya Theampetch , Prapainainar Paweena , Prapainainar Chaiwat
Published: October 2014

In this paper, proton conducting composite membranes of Nafion®-mordenite for direct methanol fuel cell (DMFC) were prepared using solution casting method. Mordenite, used as inorganic filler, was incorporated into Nafion polymer in order to improve membrane properties for DMFC application. Effect of solution casting temperature on resulting composite membranes was focused. The temperature of the membrane preparation was varied from 80 to 120°C. Properties and morphology of the resulting membranes including solubility, water uptake, ion – exchange capacity were investigated and reported. It was found that composite membrane prepared at 100°C gave the most alcohol resistance and mechanical stability membrane with 0.59% soluble. Furthermore, it gave highest ion – exchange capacity, 0.10 meq⋅g-1, which is 33% and 98% higher than the membranes prepared at 80°C and 120°C respectively.
Privacy Data Analysis in Services Combination Process Based on CPN
Authors: Liu Yu Lin , Zhai Gui Yuan , Zhou Jian Tao
Published: October 2014

BPEL is a Business Process Execution Language, BPEL process complish the cooperation of Web services through exchanging messages between services. Some privacy data should be collected and exposed in BPEL process, the leaking of privacy data will bring troubles to the user of Web service. So the paper’s aim is analyzing and verifying whether the usage or the transmission of privacy data in BPEL process violate the privacy statute. This paper establishs a BPEL CPN model using modeling method and uses extended P3P policy to describe user’s requirements, finally a prototype system is designed and developed. The result of the experiment can show whether the usage or the transmission of privacy data in BPEL violate the privacy statute and can show the default informations in detail.
Appearance of LTE and Completed in 3GPP Releases
Authors: Izadi Behrad , Ebrahimi Seyedeh Masoumeh , Kiong Tiong Sieh
Published: October 2014

LTE radio platform lets operators to attain possibly increased high throughputs compared to HSPA+ with increased spectrum bandwidth so the main focuses in this technique reached to goals like higher data rate and less latency. Work with LTE commenced with the 3GPP in 2004, by having a recognized Long Term Evolution (LTE) work piece started up in 2006 and also a completed version of Release 8 lunched in 2009. This paper has overview to all releases related to LTE with their mention specifications in the 3rd Generation Partnership Project (3GPP).
Research on the Risk Assessment Algorithm for Accounting Information System Based on Analytic Hierarchy Process
Authors: Wu Shu Hui
Published: October 2014

This paper concentrates on the risk assessment problem for accounting information system, which is an important problem in enterprise informatization construction. Firstly, we show that process of the accounting information system is made up three parts: 1) Implementation process of the accounting information system, 2) Processing of the accounting information, and 3) Management process of the accounting information system. Secondly, evaluation index system of the accounting information system risk assessment is given, which is a hierarchy structure with three layers. Thirdly, we introduce analytic hierarchy process to solve the problem of accounting information system risk assessment estimating. In analytic hierarchy process, an overall object is positioned in the top level, and the criteria in the middle level represents to the overall object. Furthermore, the perfectly consistent case where the pairwise comparisons matrix can be defined using a priority vector. Utilizing the interval weights, the maximum interval can be obtained, and then the index weights estimating problem can be converted to a linear programming problem with constraint conditions. Finally, experiments are conducted to make performance evolution, compared with expert’s evaluation and very positive results are obtained.
Corn Production: A Subsurface Drip Irrigation Approach
Authors: Liu Feng , Wu Guang Hua , Zhang Ming Yu , Wang Qiang
Published: October 2014

Jilin Provincial Academy of Agricultural Machinery initiated studies in 2000 to develop the methodology for successful application of subsurface drip irrigation (SDI) for corn production on the deep silt loam soils of the northeast plains, China. Irrigation water use for corn can be reduced by 37–52% when using SDI compared with more traditional forms of irrigation in the region. Irrigation frequency has not been a critical issue when SDI is used for corn production on the deep silt loam soils of the region. A dripline spacing of 1.5 m has been found to be most economical for corn grown in 0.76 m spaced rows. Nitrogen fertigation was a very effective management tool with SDI, helping to maximize corn grain yield, while obtaining high efficiencies of nitrogen and water use. The research SDI systems have been utilized since 2000 without replacement or major degradation. SDI systems lasting 10–20 years are cost competitive for corn production with the more traditional forms of irrigation in the northeast plains for certain field sizes.
The Status Quo of Mechanical Methods Recycling Waste Printed Circuit Boards
Authors: Yang Ya Wei , Sun Fu Wei , Tie Zhan Xu
Published: October 2014

Waste printed circuit boards is one of the main electronic waste,which has serious pollution,it has valuable metal and nometal.So its processing method is a very complex problem.There are a variety of recovery methods since the birth of waste printed circuit boards,and the most widely used method is mechanical method,which is practical and avoids the problem of environmental pollution.This article describes the recovery process of mechanical method of recycling waste printed circuit boards and the equipment used, and summarizes the status quo of mechanical method of recycling waste printed circuit boards in China and abroad.
The Analysis of Heavy Metals Pollution in Soil and Ecological Risk Assessment in Estuaries of Jiaozhou Bay, China
Authors: Wu Dan , Chen You Yuan , Li Jin Jun
Published: October 2014

The problem of urban soil pollution has become increasingly prominent. Finding out the source of contamination of the replaced soil, analyzing the potential threat of contaminated soil to human health and ecological environment are the focus and the premise of the urban land replacement work. This paper selected typical region in eastern coast of Jiaozhou Bay, and research of replaced soil was carried out from the analysis of heavy metals pollution and ecological risk assessment. The results show that in the study site the quality of soil environment is poor, and there is a certain degree of heavy metals pollution; Pb,Ni and Cu are the main contribution factors of the ecological risk.
Supervisory Control and FPGA Based DAQ Card
Authors: Hafeez Syed Mashhood , Ghauri Yasir Jamal
Published: October 2014

The purpose of this paper was to design the efficient, cost-effective and reliable FPGA based Data acquisition card with the smart features. Features like Web monitoring and SMS monitoring makes it better supervisory control. The Graphical User Interface (GUI) is made on the LabVIEW, which provides the very easy user interface. It cannot solely be applied in the industry, but also for the academic purpose.
Research on A.C. Sampling Technique for the Electric Parameters Based on Embedded Linux and Frequency Self-Adapting
Authors: Tao Tao , Zhang Hui Yi , Zheng Xiao , Yuan Zhi Xiang , Wang Xiu Jun
Published: October 2014

Directed at the traditional single chip microcomputer system which didn’t have the managing ability of the modern operating system, a technology of AC synchronization sampling was presented and implements which were based on embedded microprocessor S3C2410 and Linux real-time operating system kernel. The technology divided the sampling process into 2-part, frequency dynamic tracking and same-internal synchronization sampling .The multi-tasks, which process the different priorities, used to actualize sampling the signal and treating with the data. All tasks were scheduled by the preemptive Linux kernel. The technology has decreased the conflict between the precision and real-time property. The construction of hardware and software, method of constituting real-time operating system based on Linux kernel, signal frequency measuring, signal sampling and harmonic computing were introduced in detail.
Preliminary Study on Resistance of Non-Treated and Treated ITO Films
Authors: Sauli Zaliman , Retnasamy Vithyacharan , Keng Chai Jee , Palianysamy Moganraj , Kamarudin Hussin
Published: October 2014

A study on the resistance of directly sputtered films and treated films of Indium Tin Oxide (ITO) is done to initiate an extensive study on the material. This study involves variation in terms of number of layers and duration of deposition. Treated films are produced by undergoing annealing process which is carried out using Split Type Tube Furnace. Resistance measurements were carried out using Semiconductor Parametric Analyzer (SPA). Results show that the directly sputtered ITO films produced lower resistance compared to the treated ITO films.