bluuebunny/crossref_metadata_2025 huggingface dataset:
Expression Analysis of Immune Related Genes Identified from the Coelomocytes of Sea Cucumber (Apostichopus japonicus) in Response to LPS Challenge
Authors: Dong Ying , Sun Hongjuan , Zhou Zunchun , Yang Aifu , Chen Zhong , Guan Xiaoyan , Gao Shan , Wang Bai , Jiang Bei , Jiang Jingwei
Published: October 2014

The sea cucumber (Apostichopus japonicus) occupies a basal position during the evolution of deuterostomes and is also an important aquaculture species. In order to identify more immune effectors, transcriptome sequencing of A. japonicus coelomocytes in response to lipopolysaccharide (LPS) challenge was performed using the Illumina HiSeq™ 2000 platform. One hundred and seven differentially expressed genes were selected and divided into four functional categories including pathogen recognition (25 genes), reorganization of cytoskeleton (27 genes), inflammation (41 genes) and apoptosis (14 genes). They were analyzed to elucidate the mechanisms of host-pathogen interactions and downstream signaling transduction. Quantitative real-time polymerase chain reactions (qRT-PCRs) of 10 representative genes validated the accuracy and reliability of RNA sequencing results with the correlation coefficients from 0.88 to 0.98 and p-value <0.05. Expression analysis of immune-related genes after LPS challenge will be useful in understanding the immune response mechanisms of A. japonicus against pathogen invasion and developing strategies for resistant markers selection.
Hyperhomocysteinemia Accelerates Collagen Accumulation in the Adventitia of Balloon-Injured Rat Carotid Arteries via Angiotensin II Type 1 Receptor
Authors: Yao Dan , Sun Ning-Ling
Published: October 2014

Recent studies suggest that hyperhomocysteinemia (HHcy) increases collagen type I accumulation in rat vascular adventitia after balloon injury and that Angiotensin II (Ang II) induces collagen synthesis in vascular adventitial fibroblasts. Reports also indicate that Ang II type1 receptor (AT1R) activation, mediated by homocysteine (Hcy) may contribute to collagen type 1 expression in mouse aortic endothelial cells. However, little is known about the possible mechanisms behind the relationship between Hcy and AT1R in adventitial remodeling. Thus, we investigated whether HHcy induces collagen accumulation via activation of AT1R in the adventitia. Male Sprague-Dawley (SD) rats were randomly divided into a control group and a 1% l-methionine-induced HHcy group. Balloon injury was performed after 12 experimental weeks and animals were sacrificed at 7, 14, and 28 days after injury. Collagen deposition and AT1R expression was measured with Western blot. Serum Hcy, adventitial collagen, and AT1R levels were higher in the HHcy group compared with the control group. Hcy time-dependently induced collagen type 1 and AT1R expression, with the highest induction observed at 48 h. Also, we observed that the AT1R blocker, valsartan, attenuated collagen type 1 and AT1R expression. HHcy exacerbates adventitial remodeling after balloon injury, and the underling mechanisms may be related to AT1R activity.
Preference of Diamondback Moth Larvae for Novel and Original Host Plant after Host Range Expansion
Authors: Henniges-Janssen Kathrin , Heckel David , Groot Astrid
Published: October 2014

Utilization of a novel plant host by herbivorous insects requires coordination of numerous physiological and behavioral adaptations in both larvae and adults. The recent host range expansion of the crucifer-specialist diamondback moth (DBM), Plutella xylostella L. (Lepidoptera: Plutellidae), to the sugar pea crop in Kenya provides an opportunity to study this process in action. Previous studies have shown that larval ability to grow and complete development on sugar pea is genetically based, but that females of the pea-adapted strain do not prefer to oviposit on pea. Here we examine larval preference for the novel host plant. Larvae of the newly evolved pea-adapted host strain were offered the choice of the novel host plant sugar pea and the original host cabbage. These larvae significantly preferred pea, while in contrast, all larvae of a cabbage-adapted DBM strain preferred cabbage. However, pea-adapted larvae, which were reared on cabbage, also preferred cabbage. Thus both genetic differences and previous exposure affect larval host choice, while adult choice for the novel host has not yet evolved.
Switched after Birth: Performance of the Viburnum Leaf Beetle [Pyrrhalta viburni (Paykull)] after Transfer to a Suboptimal Host Plant
Authors: Desurmont Gaylord , Weston Paul
Published: October 2014

Host plant switching is common among phytophagous insects. Once optimal food sources have been depleted, immature insects may resort to use of suboptimal hosts in order to complete their development. Such host switching may have dramatic consequences for insect fitness. Here we investigate the effects of host switching in larvae of the viburnum leaf beetle, Pyrrhalta viburni, an invasive landscape pest in North America. Specifically, we examine how transfer of 3rd instar larvae from the optimal host Viburnum dentatum to three suboptimal hosts (V. lentago, V. carlesii, and V sieboldii) affects larval development and survivorship to the adult stage. Larval survivorship, pupal weight, and adult weight were overall lower for P. viburni larvae that switched hosts, independently of the suboptimal host tested. This decrease in performance corresponds to a decreased feeding rate on suboptimal hosts. Subsequent choice tests showed that 3rd instar larvae become less choosy as they approach pupation, and discriminate less between optimal and suboptimal hosts past a certain weight threshold. In conclusion, P. viburni larvae are able to complete their development on suboptimal hosts, but host switching negatively impacts several fitness correlates. Mixed ornamental gardens containing both optimal and suboptimal Viburnum species may provide to outbreaking P. viburni populations opportunities to survive the depletion of their preferred food sources.
Characterization of Laser Beam Shaping Optics Based on Their Ablation Geometry of Thin Films
Authors: Rung Stefan , Barth Johannes , Hellmann Ralf
Published: October 2014

Thin film ablation with pulsed nanosecond lasers can benefit from the use of beam shaping optics to transform the Gaussian beam profile with a circular footprint into a Top-Hat beam profile with a rectangular footprint. In general, the quality of the transformed beam profile depends strongly on the beam alignment of the entire laser system. In particular, the adjustment of the beam shaping element is of upmost importance. For an appropriate alignment of the beam shaper, it is generally necessary to observe the intensity distribution near the focal position of the applied focusing optics. Systems with a low numerical aperture (NA) can commonly be qualified by means of laser beam profilers, such as a charge-coupled device (CCD) camera. However, laser systems for micromachining typically employ focus lenses with a high NA, which generate focal spot sizes of only several microns in diameter. This turns out to be a challenge for common beam profiling measurement systems and complicates the adjustment of the beam shaper strongly. In this contribution, we evaluate the quality of a Top-Hat beam profiling element and its alignment in the working area based on the ablated geometry of single pulse ablation of thin transparent conductive oxides. To determine the best achievable adjustment, we develop a quality index for rectangular laser ablation spots and investigate the influences of different alignment parameters, which can affect the intensity distribution of a Top-Hat laser beam profile.
The Robustness of Pathway Analysis in Identifying Potential Drug Targets in Non-Small Cell Lung Carcinoma
Authors: Dalby Andrew , Bailey Ian
Published: October 2014

The identification of genes responsible for causing cancers from gene expression data has had varied success. Often the genes identified depend on the methods used for detecting expression patterns, or on the ways that the data had been normalized and filtered. The use of gene set enrichment analysis is one way to introduce biological information in order to improve the detection of differentially expressed genes and pathways. In this paper we show that the use of network models while still subject to the problems of normalization is a more robust method for detecting pathways that are differentially overrepresented in lung cancer data. Such differences may provide opportunities for novel therapeutics. In addition, we present evidence that non-small cell lung carcinoma is not a series of homogeneous diseases; rather that there is a heterogeny within the genotype which defies phenotype classification. This diversity helps to explain the lack of progress in developing therapies against non-small cell carcinoma and suggests that drug development may consider multiple pathways as treatment targets.
Combined Spectral and Spatial Modeling of Corn Yield Based on Aerial Images and Crop Surface Models Acquired with an Unmanned Aircraft System
Authors: Geipel Jakob , Link Johanna , Claupein Wilhelm
Published: October 2014

Precision Farming (PF) management strategies are commonly based on estimations of within-field yield potential, often derived from remotely-sensed products, e.g., Vegetation Index (VI) maps. These well-established means, however, lack important information, like crop height. Combinations of VI-maps and detailed 3D Crop Surface Models (CSMs) enable advanced methods for crop yield prediction. This work utilizes an Unmanned Aircraft System (UAS) to capture standard RGB imagery datasets for corn grain yield prediction at three early- to mid-season growth stages. The imagery is processed into simple VI-orthoimages for crop/non-crop classification and 3D CSMs for crop height determination at different spatial resolutions. Three linear regression models are tested on their prediction ability using site-specific (i) unclassified mean heights, (ii) crop-classified mean heights and (iii) a combination of crop-classified mean heights with according crop coverages. The models show determination coefficients \({R}^{2}\) of up to 0.74, whereas model (iii) performs best with imagery captured at the end of stem elongation and intermediate spatial resolution (0.04m\(\cdot\)px\(^{-1}\)).Following these results, combined spectral and spatial modeling, based on aerial images and CSMs, proves to be a suitable method for mid-season corn yield prediction.
Micro-Fabricated DC Comparison Calorimeter for RF Power Measurement
Authors: Neji Bilel , Xu Jing , Titus Albert , Meltzer Joel
Published: October 2014

Diode detection and bolometric detection have been widely used to measure radio frequency (RF) power. However, flow calorimeters, in particular micro-fabricated flow calorimeters, have been mostly unexplored as power meters. This paper presents the design, micro-fabrication and characterization of a flow calorimeter. This novel device is capable of measuring power from 100 \(\mu\)W to 200 mW. It has a 50-Ohm load that is heated by the RF source, and the heat is transferred to fluid in a microchannel. The temperature change in the fluid is measured by a thermistor that is connected in one leg of a Wheatstone bridge. The output voltage change of the bridge corresponds to the RF power applied to the load. The microfabricated device measures 25.4 mm \(\times\) 50.8 mm, excluding the power supplies, microcontroller and fluid pump. Experiments demonstrate that the micro-fabricated sensor has a sensitivity up to 22 \(\times\) \(10^{-3}\) V/W. The typical resolution of this micro-calorimeter is on the order of 50 \(\mu\)W, and the best resolution is around 10 \(\mu\)W. The effective efficiency is 99.9\% from 0–1 GHz and more than 97.5\% at frequencies up to 4 GHz. The measured reflection coefficient of the 50-Ohm load and coplanar wave guide is less than \(-25\) dB from 0–2 GHz and less than \(-16\) dB at 2–4 GHz.
Influence of Parameter Settings in Voxel-based Morphometry 8
Authors: Abe O. , Aoki S. , Hayashi N. , Miyati T. , Takao H. , Matsuda H. , Yamashita F. , Iwatsubo T. , Mori H. , Kunimatsu A. , Ino K. , Yano K. , Ohtomo K. , Goto M. ,   for Japanese Alzheimer’s Disease Neuroimaging Initiative
Published: October 2014

Objectives: To investigate whether reproducibility of gray matter volumetry is influenced by parameter settings for VBM 8 using Diffeomorphic Anatomical Registration Through Exponentiated Lie Algebra (DARTEL) with region-of-interest (ROI) analyses.

Methods: We prepared three-dimensional T1-weighted magnetic resonance images (3D-T1WIs) of 21 healthy subjects. All subjects were imaged with each of five MRI systems. Voxel-based morphometry 8 (VBM 8) and WFU PickAtlas software were used for gray matter volumetry. The bilateral ROI labels used were those provided as default settings with the software: Frontal Lobe, Hippocampus, Occipital Lobe, Orbital Gyrus, Parietal Lobe, Putamen, and Temporal Lobe. All 3D-T1WIs were segmented to gray matter with six parameters of VBM 8, with each parameter having between three and eight selectable levels. Reproducibility was evaluated as the standard deviation (mm3) of measured values for the five MRI systems.

Results: Reproducibility was influenced by ‘Bias regularization (BiasR)’, ‘Bias FWHM’, and ‘De-noising filter’ settings, but not by ‘MRF weighting’, ‘Sampling distance’, or ‘Warping regularization’ settings. Reproducibility in BiasR was influenced by ROI. Superior reproducibility was observed in Frontal Lobe with the BiasR1 setting, and in Hippocampus, Parietal Lobe, and Putamen with the BiasR3*, BiasR1, and BiasR5 settings, respectively.

Conclusion: Reproducibility of gray matter volumetry was influenced by parameter settings in VBM 8 using DARTEL and ROI. In multi-center studies, the use of appropriate settings in VBM 8 with DARTEL results in reduced scanner effect.
A comparison of conventional compression plates and locking compression plates using cantilever bending in an ilial fracture model
Authors: Gibson T. W. G. , Runciman R. J. , Bruce C. W.
Published: October 2014

Objectives: The purpose of this study was to compare the stiffness, yield load, ultimate load at failure, displacement at failure, and mode of failure in cantilever bending of locking compression plates (LCP) and dynamic compression plates (DCP) in an acute failure ilial fracture model. Our hypothesis was that the LCP would be superior to the DCP for all of these biomechanical properties.

Methods: Ten pelves were harvested from healthy dogs euthanatized for reasons unrelated to this study and divided into two groups. A transverse osteotomy was performed and stabilized with either a 6-hole DCP applied in compression or a 6-hole LCP. Pelves were tested in cantilever bending at 20 mm/min to failure and construct stiffness, yield load, ultimate load at failure, displacement at failure, and mode of failure were compared.

Results: The mean stiffness of DCP constructs (193 N/mm [95% CI 121 – 264]) and of LCP constructs (224 N/mm [95% CI 152 – 295]) was not significantly different. Mean yield load of DCP constructs (900 N [95% CI 649 –1151]) and of LCP constructs (984 N [95% CI 733 –1235]) was not significantly different. No significant differences were found between the DCP and LCP constructs with respect to mode of failure, displacement at failure, or ultimate load at failure.

Clinical significance: Our study did not demonstrate any differences between DCP and LCP construct performance in acute failure testing in vitro.
Kinematic gait analysis of the canine thoracic limb using a six degrees of freedom marker set
Authors: Caron A. , Caley A. , Farrell M. , Fitzpatrick N.
Published: October 2014

Objectives: To determine if the use of a six degrees of freedom marker set would allow new kinematic data of the canine thoracic limbs to be calculated. To identify any significant differences in thoracic limb gait patterns in all planes of motion, between the normal canine population and patients with confirmed medial coronoid disease (MCD).

Method: Two groups of dogs were selected representing the normal Labrador Retriever population (n = 13) and Labrador Retrievers with confirmed MCD (n = 13). Normal dogs had “normal” hip and elbow radiographic scores in line with the International Elbow Working Group and British Veterinary Association guidelines. Medial coronoid disease was confirmed using arthroscopy after kinematic analysis was performed with a six degrees of freedom marker set.

Results: The diseased elbow was nine degrees more extended between 43%-55% of the gait cycle and 16° more supinated prior, early during and after foot strike. The antebrachium was nine degrees more supinated during foot strike and three degrees more abducted during early stance. None of the other parameters were significantly different.

Clinical significance: The use of a six degrees of freedom marker set made it possible for the elbow and antebrachium to be reliably tracked in more than one plane of motion. Significant differences were identified between the normal canine population and those affected by MCD. These data may help elucidate biomechanical factors contributing to aetiopathogenesis of MCD.
Darégal, un empire mondial des herbes aromatiques culinaires
Authors: Darbonne Luc
Published: October 2014

Luc Darbonne rejoint l’entreprise familiale et se lance dans la surgélation des herbes aromatiques. Couvrant aujourd’hui 70 % du marché mondial, il a créé une gouvernance pour que la génération suivante assure la pérennité de l’entreprise.
Empathie et co-pensée
Authors: Widlöcher Daniel
Published: October 2014

L’intérêt de Freud pour la notion d’empathie est essentiellement lié à son aspect psychologique : se mettre à la place de, d’où l’articulation qu’il propose entre identification, imitation et empathie, où l’identification est première et conduit à l’empathie. Après un rappel des avatars de cette articulation entre identification et empathie dans l’œuvre de M. Klein et dans celle de R. Greenson, l’auteur s’intéresse à l’opposition entre les dimensions objective et subjective de l’empathie, illustrée par l’intérêt de Freud et de Ferenczi pour les phénomènes de télépathie. Il propose le terme de “co-pensée” pour « décrire un processus de développement réciproque de l’activité associative » de l’analysant et de l’analyste.
L'empathie dans les thérapies conjointes
Authors: Watillon-Naveau Annette
Published: October 2014

Après un rappel de la littérature psychanalytique sur les notions de contre-transfert et d’empathie, l’auteur souligne, en s’appuyant sur des vignettes cliniques, le rôle de l’observation empathique de l’enfant dans les consultations conjointes parents-enfant. Elle distingue clairement contre-transfert et empathie et leurs usages distincts mais complémentaires dans le travail analytique.
Vers la fin d'une règle légendaire : concordance des temps et non-concordance modale en espagnol moderne
Authors: Le Tallec-Lloret Gabrielle
Published: October 2014

Pour tout hispaniste français la règle de la « concordance des temps » (CDT) est une règle d’or et fait partie de ces « normes » traditionnelles tyranniques, solidement ancrées dans l’enseignement de la syntaxe, alors que leur pertinence au regard de l’histoire de la langue ou de la réalité linguistique de l’espagnol n’a jamais été scientifiquement établie. Dans la tradition grammaticale et linguistique espagnole, l’étude de la CDT est un classement des effets de discours des temps verbaux, assimilant temps verbal et temps vécu, et adoptant une méthode clairement référentialiste. Une autre approche du phénomène est possible avec la nouvelle théorie des modes et des temps de Gilles Luquet, en particulier l’opposition entre un mode actualisant et un mode inactualisant , fondée sur l’observation du signifiant des formes verbales. Au sein du mode inactualisant, la langue espagnole ne contraint à aucun respect ou non-respect de la concordance des temps, mais elle autorise l’alternance en fonction du degré d’inactualité retenu.
La modalité et le marquage différentiel de l'objet : le cas du verbe alta en coréen
Authors: Choi-Jonin Injoo
Published: October 2014

Le verbe coréen alta , précédé d’une proposition nominalisée à l’aide du nom dépendant cwul , peut être interprété aussi bien comme un verbe modal dynamique exprimant une habileté que comme un verbe à modalité épistémique factive, contre-factive ou non-factive. Dans les cas de modalité dynamique ou factive, le nom dépendant cwul peut être suivi de la marque accusative, alors que celle-ci n’est pas admise dans les cas de modalité contre-/non-factive. L’absence de la marque accusative n’entraîne cependant pas systématiquement une interprétation contre- /non-factive. Cette étude met en évidence les paramètres syntaxiques et sémantiques associés à chaque modalité du verbe alta . L’hypothèse défendue est que l’interprétation contre-/non-factive du verbe alta est liée à la grammaticalisation de ce dernier, qui perd son autonomie syntaxique et entraîne une réanalyse syntaxique et interprétative.
Les noms d'idéalités et la modalité : marquage d'une opposition
Authors: Flaux Nelly , Stosic Dejan
Published: October 2014

Prise au sens originel du terme, comme évaluation d’un objet selon les catégories du vrai/faux, du beau/laid ou du bon/mauvais, la notion de modalité est appliquée ici à la classe nominale. Nous utilisons en effet la modalité comme un des critères de sous-classification d’un type particulier de noms, que nous appelons à la suite de Husserl « noms d’idéalités » (NId) (ex. sonate , poème , gravure , théorème ). Peu étudiés jusqu’à présent, les NId renvoient à des objets très particuliers, ceux qui sont dotés d’un contenu spirituel destiné à être appréhendé par autrui. Les trois oppositions modales retenues, en combinaison avec d’autres paramètres linguistiques, permettent non seulement d’asseoir la distinction entre les NId « libres » (ex. théorème , nombre , triangle ) et « liées » (ex. symphonie , roman , tableau ), mais aussi d’affiner considérablement la typologie de l’ensemble de la classe. La modalité aléthique (vrai/faux) est étroitement liée aux NId libres logiques (ex. hypothèse ) et discursives (ex. phrase ), susceptibles d’une complémentation propositionnelle.
Sur les constructions de la forme SN se faire ADV
Authors: Nakamura Takuya
Published: October 2014

Dans cette étude, nous présentons des observations descriptives sur un ensemble de phrases construites sur la forme pronominale du verbe faire . Elles semblent, à première vue, être des variantes diathétiques d’une construction transitive à verbe support, selon le schéma typique d’oppositions diathétiques des verbes transitifs français. Ce verbe présente, cependant, un emploi particulier de se -moyen appelé «  se -moyen descriptif », qui semble neutraliser la différence avec l’emploi «  se -neutre ». À la lumière de l’hypothèse distributionnelle sur le sujet d’un nom prédicatif, la forme se faire se révèle ne pas être une forme du support faire , mais d’un autre type. Les constructions se -neutre et se -moyen descriptifs se voient attribuer les structures de base respectivement inaccusative et transitive.
Rapprochements entre moyen et concomitant en arabe algérien
Authors: Boucherit Aziza
Published: October 2014

En arabe algérien le moyen n’a pas d’expression formelle propre. L’hypothèse proposée dans cet article est que, dans le processus de renouvellement du système verbal, amorcé par l’introduction du marquage de la concomitance , la construction marquée, en tant que procédé de mise en relief du prédicat, attire à elle des valeurs connexes comme celle du moyen . Considérant que nous avons affaire à un processus diachronique, nous partons de l’arabe standard qui révèle clairement l’opposition postulée entre les voix active, moyenne et passive (§ 2) ; puis, nous exposons ce qu’il en est en arabe algérien (§ 3). Nous discutons ensuite de la question des voix (§ 4) afin de montrer pourquoi ce postulat est fondé et comment cette opposition a été renouvelée. Ce faisant, nous montrons que la catégorie du moyen n’a pas d’expression morphologique spécifique. Enfin, nous rapprochant de notre hypothèse nous indiquons (§ 5) pourquoi il a semblé justifié de rapprocher concomitant et moyen . En conclusion, nous soulignons que, dans cette hypothèse, le moyen ne retrouve pas une expression spécifique car son sémantisme est mêlé à celui du concomitant .
The Evolution of Untreated Acute Syphilitic Posterior Placoid Chorioretinitis Captured by Multimodal Retinal Imaging
Authors: Armstrong Blair K. , Pitcher John , Shah Rajiv , Brady Christopher , Perlmutter David , Garg Sunir J.
Published: October 2014

Acute syphilitic posterior placoid chorioretinitis (ASPPC) is a rare manifestation of syphilis. Most cases respond to systemic treatment of the underlying
Treponema pallidum
infection. The authors illustrate the natural progression of untreated ASPPC with multimodal retinal imaging.

[
Ophthalmic Surg Lasers Imaging Retina
. 2014;45:606–609.]
In Vivo Evidence of Epiretinal Membrane Formation Secondary to Acute Macular Microhole After Posterior Vitreous Detachment
Authors: Furino Claudio , Cicinelli Maria Vittoria , Boscia Francesco , Alessio Giovanni
Published: October 2014

The authors present the case of an idiopathic epiretinal membrane (ERM) secondary to an acute self-repaired macular microhole documented by optical coherence tomography (OCT). A 65-year-old phakic woman presenting with acute onset of light flashes, myodesopsia, and central negative scotoma in the right eye was diagnosed with age-related posterior vitreous detachment. Spectral-domain OCT showed a tiny defect of the outer retina, consistent with the diagnosis of macular microhole, which spontaneously closed after 4 weeks. Six months later, the patient developed a contracting ERM, and her visual acuity significantly worsened. This case represents the first in vivo documentation of retinal pigment epithelium cell migration through a macular microhole, highlighting the importance of OCT in understanding idiopathic ERM pathogenesis.

[
Ophthalmic Surg Lasers Imaging Retina.
2014;45:596–597.]
Distributed HPC UFS ACM Optimizing the Risk for All the Time on Every Time
Authors: Patra Prashant Kumar , Pradhan Padma Lochan
Published: October 2014

The access control mechanism is one of the well advance controls for all the time on every time on recent pervasive computing for protection of data and services from the hacker, thefts and unauthorized users. This paper contributes to the development of an optimization model that aims to determine the optimal cost to be implementing into DOOS security mechanisms on the measure component of UFS attribute. Our objective should be design in such way, that the Read, Write & Execute automatically protect to our web services on DOOS. We have to make high simplification, unification and step by step normalization by implementing UFS ACM mechanism based on distributed object oriented system on N dimensional hypercube model. Finally, we have to maximize the qualities of services & minimize the cost and time of the Business, Resources and Technology. The subject and object can able communicate through read, write and execute over a UFS on N Dimensional HPC. We have to apply these ACM utilities over a anti-fragile technology to make robust and high secure for all the time. Our objective will be resolve the unstable, uncertainty, un-order, un safe and unset up (U^4) problems of complex technology on right time and right place for all the time in around the globe to take care of accountabilities, action abilities and manage abilities. Meanwhile, it will be more accountable for performance, fault tolerance, throughput, bench marking and risk optimization on any web services for all the time.
A Prototype for Global Trust Management in Mobile Ambient Home Network
Authors: Akinboro S.A. , Olajubu E.A. , Ogundoyin I.K. , Aderounmu G.A.
Published: October 2014

This article developed a framework for trust management in mobile ambient home network with a view to secure the home devices and channel against attacks. The framework was design using mobile ad hoc network and social networking concept. The trust management, global reputation aggregation which considered the direct and indirect communication of home devices and remote devices was employed to shield home devices from attacks. While real time dynamic source routing protocol was employed to prevent the channel from attacks by selfish and malicious nodes. The prototype of the framework was implemented using C# programming language. The framework will enhance the activities in the home by securing the home network against unforeseen network disruption and node misbehavior due to the distributed nature of the environment.
Starting Transient Experiments in the MEC-80 Rocket Engine Scaled Ignition Device
Authors: Rugescu Radu Dan , Bacaran Florin Radu , Predoiu Stefan Catalin
Published: October 2014

One of the main sources of concern within the design and manufacturing of rocket engines is the starting device, due to the relatively low reliability of the ignition of the main combustion process in these engines. Not only is necessary for the igniter to produce a sound ignition, but the starting pressure transient should manifest a tightly controlled build-up, in a very definite time interval. A specific research and development work was done by the authors in order to reliably assess the requirements for the ignition device of the newly developed compound, solid-liquid experimental rocket engine MEC-80 of the ADDA team. Computer predictions and scaled experiments on the constant volume combustion into a modified calorimeter were performed with notable results that led to the optimal design of the ignition device of the motor. The test results are presented with emphasize on the predictability of the ignition delay.
SEM and EDAX Study of Pretreated Rice Husk for the Sorption of Cu(II) from Wastewater
Authors: Kumar Upendra , Kumar Binod , Pandey Krishna Murari
Published: October 2014

The morphological characteristics as well as important physical and chemical characteristics rice husks were evaluated by different techniques to analyze the suitability of rice husk to adsorb metal ions from water and wastewater. The raw rice husk (RRH), sodium carbonate treated rice husk (NCRH) and metal adsorbed rice husk were analyzed by SEM-EDAX study. Batch sorption kinetics studies were also conducted for Cu (II) to find the corresponding equilibrium time and the percentage removal for each of the experiment in the sorption process. The results of material characteristics and morphological aspects pointed out some properties that can make the sorption processes possible. The copper removal was observed in the range of 90 to 97 % depending upon the other physicochemical parameters of the sorption experiment. The highly efficient low cost and the rapid uptake by the proposed material indicated that it could be an excellent alternative for the removal heavy metal by sorption process.
Research Regarding Software Developing for Machining Parameters Optimization Calculus
Authors: Pena Andra Elena , Anania Florea Dorel , Zapciu Miron
Published: October 2014

Establish of efficient machining parameters has been a problem that has confronted manufacturing industries for nearly a century, and is still the subject of many studies. Optimum machining parameters are of great concern in manufacturing environments, where economy of machining operation plays a key role in competitiveness in the market. The aim of this paper is to present a method to integrate advanced technology issues into a simple and intuitive application for machining parameters calculus. The goal is the development of a program easy to use in industry for CAM engineers and machine operators, that optimize the cutting parameters (in ways that diminish the defects – vibrations, cutting tool wear, machine tools wear – and reduce the power consumption) depending on a number of parameters determined by experimental and analytical calculation. The program will integrate calculus algorithms based on experimental data and analytical results with a simple and friendly user interface.
Analyse of Possibility of Form Tools Manufacturing Using Wire Cutting EDM
Authors: Mikolajczyk Tadeusz
Published: October 2014

This paper presents an attempt to apply wire cutting EDM for manufacturing of form tool edges with cemented carbide. Was made the experiment of comparing edges made using wire cutting EDM techniques and conventional made in the grinding process. As a result of edge life research were found to be reduced of life wire cutting EDM edge by 50% compared to the conventional edge. Pointed to the possibility of creating a CAD-CAM system for form tools, the application of which will accelerate the production of these tools.
Behaviour Analysis of Hexapod Structure for Integrated Design
Authors: Paraschiv Ioana Carmen , Zapciu Miron , Dogariu Constantin
Published: October 2014

In this research work, the analysis of a parallel structure, hexapod type, was studied from the rigidity point of view. The modelling of the structure and the assembly were designed in SolidWorks one of the most used software for the design in the construction of machine tools, automotive and aeronautics field. The modal, the static analysis, forces and moment loading, were performed with ANSYS programme by finite element method, for each of the three studied positions of the structure.
Theoretical Contributions to the Accuracy of Parts by Moulding and Injection Moulding
Authors: Iordan Ionela , Dogariu Constantin , Mohora Cristina
Published: October 2014

The purpose of this study is to analyse, by simulation, the injection of ABS plastic parts and track results on piece deformations after the latter was removed from the mould. Injection Process. Analysis was performed using the Autodesk Moldflow professional package. The results of the theoretical analysis by numerical methods are used for optimal design of the die to reduce and eliminate the strains and defect parts.
Buckling Behaviour of Circular Ring Stiffened Filament Wound Composite Pressure Hull through Finite Element Analysis
Authors: Pandey Krishna Murari , Dey Abhijit , Choudhury P.L.
Published: October 2014

The aim of present study was investigate the buckling pressure of moderately thick-walled filament-wound carbon–epoxy stiffened composite pressure vessel subjected to external hydrostatic pressure through finite element analysis and compare the result with un-stiffened filament wound carbon/epoxy composite pressure vessel used in under water vehicle applications. The winding angles were [±30/90] FW, [±45/90] FW and [±60/90] FW. ANSYS 14.0 APDL, a commercial finite element software package successfully predicted the buckling pressure of filament-wound composite pressure vessel with a deviation much higher than the results of un-stiffened filament wound composite cylinder .All the finite element analysis shows that the composite pressure vessel with winding pattern [±60/90] FW has the higher value of critical buckling pressure. Major failure modes in both the analysis were dominated by the helical winding angles.
Numerical Analysis Concerning the Harmfulness of Crack Turbine Rotors Using a Multi-Scale Approach Based on a Dynamic Finite Element Method
Authors: Dau Anh Tuan , Nistor Ionel , Gavrus Adinel
Published: October 2014

This work is placed in the context of the simulation of the behavior and the harmfulness of cracked rotors by Electricité de France (EDF) in order to evaluate its impact on the industrial system. Several numerical tools have been developed by the Research and Development Division of EDF and a feasibility study was conducted to prove its capacities to simulate the behavior of a rotor subject to a crack. Since the industrial context request fast response to such situation, the numerical simulation must be performed as quickly as possible. For this reason a multi-scale 1D-3D modeling has been proposed: the healthy part of the rotor is modeled by reduced Timoshenko beam finite elements since the part including the crack is modeled by 3D finite elements. The aim of the work is to prove the accuracy of this multi-scale approach, its feasibility and its CPU performance.
Adaptive Variable Universe of Discourse Fuzzy Sliding Mode Control
Authors: Ullah Nasim , Bhatti Faizan Ahmad
Published: October 2014

This paper proposes adaptive variable universe of discourse fuzzy sliding mode control for efficient compensation of unbounded disturbances and reduced chattering. Classical sliding mode control is robust to bounded uncertainties and disturbances. The disadvantages of classical sliding mode control are high frequency chattering and poor performance in case of unbounded disturbances. Chattering phenomena is minimized using adaptive fuzzy sliding mode control but fuzzy fixed universe of discourse makes it in-efficient for time varying unbounded disturbances and uncertainties. This article investigates a variable universe of discourse fuzzy logic system for unbounded disturbances. Fuzzy universe of discourse for membership functions of input and output parameters is tuned online using an adaptive empirical law derived from the error dynamics. Performance of proposed control is verified using extensive simulations.
An Experimental Approach to the Robotized Fabrication of WC-Co Based Layers
Authors: Pavalache Adrian Catalin , Dumitru Gabriel Marius , Stanciu Elena Manuela , López Raúl , Vasile Mihai , Petre Dan
Published: October 2014

The use of laser cladding (LC) technology for the improvement of surface properties in various mechanical design applications has given rise to the development of application-oriented composites. The present paper furnishes relevant notes on an experimental approach to the design optimization of experiments regarding WC-Co based layers obtained by laser cladding. The current paper emphasizes the influence of parameter variation on the characteristics of the deposited layer and reports the manner in which the heat input and the laser power density influence the microstructure.
Mobile Robot Navigation Techniques Using Potential Field Method in Unknown Environments
Authors: Dumitru Stefan A. , Vladareanu Luige , Yan Tian Hong , Qi Chen Kun
Published: October 2014

In this paper, a navigation system for autonomous mobile robots that move into unknown environments based on artificial potential field is presented. The robot moves to a predefined target point while detects and maps every encounter object using its artificial monocular vision system based on intrinsic camera parameters. During navigation, every obstacle is associated with a repulsive field depending on the distance and relative position to the robot, while the target point has an attractive field. Combining those values of potential field defines the direction of the next step of the robot. The results reported are showing the behavior of the method in three scenarios, avoiding obstacles, going through a narrow corridor and escaping from a minimum local trap.
Driver Warning Assistant for Monitoring Heart Rate and SpO2 Using Mobile Phones
Authors: Dumitru Adrian Iulian , Mogan Gheorghe Leonte
Published: October 2014

Nowadays both mobile phones and vehicles are playing an important role in our lives, because these two industries have met an amazing development during the recent years. Also, steady progress has been made in the medical sensors field and the increasing capacity of wireless communication has led to the emergence of new methods for health monitoring. This paper presents a system for real-time monitoring of the driver's health. The proposed driver warning assistant is composed of a wearable low-power sensor that dynamically monitors the vital parameters of the driver and the measured data are sent via Bluetooth wireless communication protocol. Data processing, data management and communication and the human computing interfacing are implemented using a smart phone running an Android operation system. Experimental results associated with physiological parameters which have been measured are also included in the paper.
Simulation and Control of the Vehicles Movement in the Case of the Overtaking Procedures
Authors: Mureşan Vlad , Groza Adrian , Iancu Bogdan , Clitan Iulia
Published: October 2014

In this paper, a solution for the simulation and control of the vehicles movement in the case of performing the overtaking procedures is proposed. In order to design the simulation system, the mathematical modeling of the vehicle movement is made, the obtained model being based on the state space representation. Also, the real-time working of the simulator is based both on the information obtained through the usage of a communication network between the vehicles and of the GPS-measured position. The main advantage of the proposed system consists in assisting the driver to perform a correct and a safe overtaking. Another original element presented in this paper is the including of the vehicle movement model in a control structure, resulting the possibility that the overtaking to be performed with a higher efficiency. The mathematical model, respectively the simulation system were tested and validated through some simulations associated to an overtaking scenario, simulations presented in this paper, too.
A Laboratory Infrastructure for the Evaluation of the Use of Multi-Agent Technologies in Industrial SCADA Systems
Authors: Diaconescu Eugen , Enescu Florentina Magda
Published: October 2014

This paper presents some considerations on the posibility of using of multi-agent systems MAS in building SCADA systems. It also describes the laboratory test bench developed by us for the testing of the SCADA-MAS compound. It is shown the reflection in the literature of the SCADA-MAS subject to the extent that it exists and the main concepts underlying the two important technologies, one of which is of technical and engineering origin, and the other is related to artificial intelligence. We evaluates the prejudgement concerning incompatibility or the disimilarity of the two technologies having divergent characteristics. We propose research directions suitable for multi-agent systems to assist in solving industrial SCADA networks.
Static and Dynamic Verification of Machine Tools before Remanufacturing
Authors: Darabă Dinu
Published: October 2014

In case of remanufacturing, from the point of view of static and dynamic stability the reusable structural elements are in a partially unknown condition. Before commencing the re-manufacturing process, the effects of reactions and moments occurred subsequent to the work processes and that of other disturbing factors upon the structural elements, during the previous exploitation cycles, should be known. Therefore, it is necessary to verify the static and dynamic stability of any machine tool before commencing the remanufacturing process.
Analysis of Oxygen Transfer and Dissolved Oxygen Concentration Measurement Tests in a Wastewater Treatment Plant
Authors: Roman Marius Daniel , Felseghi Raluca Andreea
Published: October 2014

The efficiency of oxygen transfer depends on many factors including the type, size and shape of diffusers and the tank geometry. In this paper, the effect of the depth of water in the tank and the extension of coverage area of diffusers on each of oxygen transfer capacity, efficiency and dissolved oxygen concentration is tested. Experimental procedure is adopted to evaluate the effect of dissolved oxygen concentration. The results of the case study showed that, both the depth of water and the extent of coverage area of diffuser had a significant effect on the tested parameters. The values of oxygen transfer capacity was 76,7 kg O2/h and oxygen efficiency (without agitation): 5,3 kg O2/h, oxygen efficiency (with agitation): 4,2 kg O2/h.
Adaptive Approach to Quality Management in Combined Methods of Materials Processing
Authors: Golubchik Eduard , Polyakova Marina , Gulin Alexandr
Published: October 2014

One of the requirements of the modern materials market is the stable balance between the manufacturer and customer interests. However in order to improve the competitive edge the manufacturer should be able to adapt well to the changing market conditions. This feature is especially important when the manufacturer only starts producing the products with improved consumer properties. The article is concerned with the concept of real-time technological adjustment of quality ratings to external impact and the development of the new combined method of carbon wire plastic deformation resulting in improving its mechanical properties is given as an example. The proposed concept is based on the principle of complex technological systems generation on the basis of precedent selection as well as on the application of vertical and horizontal adaptation. The authors show the results of complex theoretical and experimental investigation of various technological operations influence of the developed method on formation of the wire mechanical characteristics.
New Management Approaches for Increasing the Competitiveness in Mechanical Engineering Industry
Authors: Firescu Violeta , Lăpuşan Ciprian , Mândru Dan , Kunos István
Published: October 2014

The European industry, especially mechanical engineering industry, has lost step by step its competitiveness in the years that followed the global crisis. Implementing new management approaches that sustain the strategic objectives of the company is part of the solution for recovering the lost market share. One of the important issues that influence the reaching of the organization’s strategic objectives regards the qualification and the training needs of its employees. In the present paper coaching was used to develop a competencies development matrix (CDM) that responds to a Romanian company strategy. The matrix was used to define the training needs and the first stage of prioritization of the competencies development for the company (technical and management CDMs). The results are going to be used in the next step of coaching within the company and are also useful for the industrial management specialists in the process of competencies defining, prioritizing and modelling in mechanical engineering.
Aspects of Medical Waste Management in County Hospital
Authors: Debita Mihaela , Mereuta Elena , Rus Madalina , Musat Carmina Liana
Published: October 2014

This paper aims to highlight how the county hospital manages to monitor the amount of medical waste produced. For three semesters the waste management activity has been monitored and analyzed. The regression analysis reveals that some medical waste depends on patients’ number with highly significance. The paper also reveals the most common risks generated by improper handling and collection of medical waste.
Assessing the Relationship between Joint Damage and Gait Impairment in Children with Haemophilic Arthropathy. A Clinical Study
Authors: Iliescu Alina Nela , Ciobanu Ileana , Badea Ruxandra Ileana , Dumitru Luminita Violeta , Marin Andreea Georgiana , Dinu Horatiu , Berteanu Mihai
Published: October 2014

The long term consequence of repeated haemarthrosis is the damage of joint tissue and irreversible haemophilic arthropathy, with severe gait related disability. Physical Therapy represents an inexpensive therapeutical intervention, with a central place in the management of the children with haemophilia, especially in the developing countries, where the profilactic substitution treatment is not established as standard procedure. Preventing and delaying the progress of the disease are essential objectives. The related interventions must be based on an appropriate assessment. The aim of our study is to investigate the relations between the joint damage – evaluated clinically and functionally, and the overall scores concerning the walking ability in children with haemophilia.