bluuebunny/crossref_metadata_2025 huggingface dataset:
Towards Dependence of Tropical Cyclone Intensity on Sea Surface Temperature and Its Response in a Warming World
Authors: Arora Kopal , Dash Prasanjit
Published: May 2016

Tropical Cyclone (TC) systems affect global ocean heat transport due to mixing of the upper ocean and impact climate dynamics. A higher Sea Surface Temperature (SST), other influencing factors remaining supportive, fuels TC genesis and intensification. The atmospheric thermodynamic profile, especially the sea-air temperature contrast (SAT), also contributes due to heat transfer and affects TC’s maximum surface wind speed (Vmax) explained by enthalpy exchange processes. Studies have shown that SST can approximately be used as a proxy for SAT. As a part of an ongoing effort in this work, we simplistically explored the connection between SST and Vmax from a climatological perspective. Subsequently, estimated Vmax is applied to compute Power Dissipation Index (an upper limit on TC’s destructive potential). The model is developed using long-term observational SST reconstructions employed on three independent SST datasets and validated against an established model. This simple approach excluded physical parameters, such as mixing ratio and atmospheric profile, however, renders it generally suitable to compute potential intensity associated with TCs spatially and weakly temporally and performs well for stronger storms. A futuristic prediction by the HadCM3 climate model under doubled CO2 indicates stronger storm surface wind speeds and rising SST, especially in the Northern Hemisphere.
An Intelligent and Fast Chaotic Encryption Using Digital Logic Circuits for Ad-Hoc and Ubiquitous Computing
Authors: Khare Ankur , Shukla Piyush , Rizvi Murtaza , Stalin Shalini
Published: May 2016

Delays added by the encryption process represent an overhead for smart computing devices in ad-hoc and ubiquitous computing intelligent systems. Digital Logic Circuits are faster than other computing techniques, so these can be used for fast encryption to minimize processing delays. Chaotic Encryption is more attack-resilient than other encryption techniques. One of the most attractive properties of cryptography is known as an avalanche effect, in which two different keys produce distinct cipher text for the same information. Important properties of chaotic systems are sensitivity to initial conditions and nonlinearity, which makes two similar keys that generate different cipher text a source of confusion. In this paper a novel fast and secure Chaotic Map-based encryption technique using 2’s Compliment (CET-2C) has been proposed, which uses a logistic map which implies that a negligible difference in parameters of the map generates different cipher text. Cryptanalysis of the proposed algorithm shows the strength and security of algorithm and keys. Performance of the proposed algorithm has been analyzed in terms of running time, throughput and power consumption. It is to be shown in comparison graphs that the proposed algorithm gave better results compare to different algorithms like AES and some others.
An Eco-Friendly Ultrasound-Assisted Synthesis of Novel Fluorinated Pyridinium Salts-Based Hydrazones and Antimicrobial and Antitumor Screening
Authors: Rezki Nadjet , Al-Sodies Salsabeel , Aouad Mohamed , Bardaweel Sanaa , Messali Mouslim , El Ashry El
Published: May 2016

The present work reports an efficient synthesis of fluorinated pyridinium salts-based hydrazones under both conventional and eco-friendly ultrasound procedures. The synthetic approach first involves the preparation of halogenated pyridinium salts through the condensation of isonicotinic acid hydrazide (1) with p-fluorobenzaldehyde (2) followed by the nucleophilic alkylation of the resulting N-(4-fluorobenzylidene)isonicotinohydrazide (3) with a different alkyl iodide. The iodide counteranion of 5–10 was subjected to an anion exchange metathesis reaction in the presence of an excess of the appropriate metal salts to afford a new series of fluorinated pyridinium salts tethering a hydrazone linkage 11–40. Ultrasound irradiation led to higher yields in considerably less time than the conventional methods. The newly synthesized ILs were well-characterized with FT-IR, 1H NMR, 13C NMR, 11B, 19F, 31P and mass spectral analyses. The ILs were also screened for their antimicrobial and antitumor activities. Within the series, the salts tethering fluorinated counter anions 11–13, 21–23, 31–33 and 36–38 were found to be more potent against all bacterial and fungal strains at MIC 4–8 µg/mL. The in vitro antiproliferative activity was also investigated against four tumor cell lines (human ductal breast epithelial tumor T47D, human breast adenocarcinoma MCF-7, human epithelial carcinoma HeLa and human epithelial colorectal adenocarcinoma Caco-2) using the MTT assay, which revealed that promising antitumor activity was exhibited by compounds 5, 12 and 14.
A Novel Technique to Detect EGFR Mutations in Lung Cancer
Authors: Liu Yuanbin , Lei Ting , Liu Zhiyu , Kuang Yanbin , Lyu Jianxin , Wang Qi
Published: May 2016

Epidermal growth factor receptor (EGFR) gene mutations occur in multiple human cancers; therefore, the detection of EGFR mutations could lead to early cancer diagnosis. This study describes a novel EGFR mutation detection technique. Compared to direct DNA sequencing detection methods, this method is based on allele-specific amplification (ASA), recombinase polymerase amplification (RPA), peptide nucleic acid (PNA), and SYBR Green I (SYBR), referred to as the AS-RPA-PNA-SYBR (ARPS) system. The principle of this technique is based on three continuous steps: ASA or ASA combined with PNA to prevent non-target sequence amplification (even single nucleotide polymorphisms, SNPs), the rapid amplification advantage of RPA, and appropriate SYBR Green I detection (the samples harboring EGFR mutations show a green signal). Using this method, the EGFR 19Del(2) mutation was detected in 5 min, while the EGFR L858R mutation was detected in 10 min. In this study, the detection of EGFR mutations in clinical samples using the ARPS system was compatible with that determined by polymerase chain reaction (PCR) and DNA sequencing methods. Thus, this newly developed methodology that uses the ARPS system with appropriate primer sets is a rapid, reliable, and practical way to assess EGFR mutations in clinical samples.
Novel Heat Exchangers with Cross-Runners for Air and Water Cooling
Authors: Jeng Tzer-Ming , Tzeng Sheng-Chung , Tseng Ching-Wen , Chang Chia-Hung , Liu Yi-Cheng , Peng Hsiao-Yun , Chen Huang-Han
Published: May 2016

This work experimentally investigated the pressure drops and heat transfer characteristics of cross-runner heat exchangers. Three kinds of configurations employed were, (1) the aluminum alloy heat exchanger with a staggered rectangular-fin array (Model A); (2) the aluminum alloy heat exchanger with a staggered round pin fin array (Model B); and (3) the copper heat exchanger sintered by multiple copper sheets with rectangular punched holes forming cross-runners (Model C). The results indicate that increasing heat-transfer area (AHT) and decreasing porosity (ε) of the heat exchanger significantly enhanced the heat transfer capacity of the cross-runner heat exchanger, but also increased flow resistance. At the same pumping power for the air-cooled heat transfer experiment, the Nu of Model C was 2.27 and 1.67 times that of Models A and B respectively. Additionally, this study proposed the semi-empirical correlations of dimensionless pressure drop and Nusselt number in terms of Reynolds number for air-cooling measurements. Finally, the feasibility of using the present cross-runner heat exchangers for an instantaneous water heater was also investigated according to the water-cooled heat transfer experiment and the results showed great commercial potential of Model C.
Synthesis and in Vitro and in Vivo Anticoagulant and Antiplatelet Activities of Amidino- and Non-Amidinobenzamides
Authors: Lee Soo , Lee Wonhwa , Bae Jong-Sup , Ma Eunsook
Published: May 2016

Three amidino- and ten non-amidinobenzamides were synthesized as 3-aminobenzoic acid scaffold-based anticoagulant and antiplatelet compounds. The anticoagulant activities of thirteen synthesized compounds 1–13, and 2b and 3b as prodrugs were preliminary evaluated by screening the prolongation of activated partial thromboplastin time (aPTT) and prothrombin time (PT) in vitro. From the aPTT results obtained, two amidinobenzamides, N-(3′-amidinophenyl)-3-(thiophen-2′′-ylcarbonylamino) benzamide (1, 33.2 ± 0.7 s) and N-(4′-amidinophenyl)-3-(thiophen-2′′-ylcarbonylamino) benzamide (2, 43.5 ± 0.6 s) were selected to investigate the further anticoagulant and antiplatelet activities. The aPTT results of 1 (33.2 ± 0.7 s) and 2 (43.5 ± 0.6 s) were compared with heparin (62.5 ± 0.8 s) in vitro at 30 μM. We investigated the effect of 1 and 2 on blood anticoagulant activity (ex vivo) and on tail bleeding time (in vivo) on mice. A tail cutting/bleeding time assay revealed that both 1 and 2 prolonged bleeding time in mice at a dose of 24.1 g/mouse and above. Compounds 1 and 2 dose-dependently inhibited thrombin-catalyzed fibrin polymerization and platelet aggregation. In addition, 1 and 2 were evaluated on the inhibitory activities of thrombin and FXa as well as the generation of thrombin and FXa in human umbilical vein endothelial cells (HUVECs). Collectively, 1 and 2 possess some antiplatelet and anticoagulant activities and offer a basis for development of a novel antithrombotic product.
Synthesis and p38 Inhibitory Activity of Some Novel Substituted N,N′-Diarylurea Derivatives
Authors: Zhu Dianxi , Xing Qifeng , Cao Ruiyuan , Zhao Dongmei , Zhong Wu
Published: May 2016

We have identified a novel series of substituted N,N′-diarylurea p38α inhibitors. The inhibitory activity of the target compounds against the enzyme p38α, MAPKAPK2 in BHK cells, TNF-α release in LPS-stimulated THP-1 cells and p38α binding experiments were tested. Among these compounds, 25a inhibited the p38α enzyme with an IC50 value of 0.47 nM and a KD value of 1.54 × 10−8 and appears to be the most promising one in the series.
Simulation of the Impact of a Sensor’s PSF on Mixed Pixel Decomposition: 1. Nonuniformity Effect
Authors: Xu Chao , Liu Zhaoli , Hou Guanglei
Published: May 2016

The nonuniformity of the spatial response to surface radiation is a fundamental characteristic of all airborne and spaceborne sensors that inevitably introduces uncertainty into the estimation of object proportions by the spectral unmixing of mixed pixels. Simulated data of the surface radiation distribution and a TM (thematic mapper) response matrix were developed and utilized to imitate the generation of mixed pixels and the extraction of the object proportion via a Monte Carlo simulation, and then, the nonuniformity effect of a sensor’s PSF (point spread function) was explored. The following conclusions were drawn: (1) given a nonuniform spatial response of a sensor to a surface scene with a constant object proportion and various object distribution patterns, the mixed pixel DN (digital number) of a remotely-sensed image becomes a random variable, which causes a PSF nonuniform effect on the object proportion extraction; (2) for the estimated object proportion, the corresponding true object proportion appears with a random variation; its upper and lower bounds take on an asymmetrical spindle shape; and models of these bound curves at any probability level were established; (3) there exists a negative linear relationship between the bias of the spectral unmixing and the estimated proportion; the bias is zero at an estimated proportion of 50%, and when the estimated proportions are approximately 100% and 0%, the object proportion is overestimated by 0.78% and underestimated by 0.78%, respectively; (4) the relationship between the standard deviation of the spectral unmixing and the estimated proportion follows a symmetrical polynomial function opening downward; the standard deviation reaches a maximum of 4.4% at the estimated proportion of 50%, and when the estimated proportion is approximately 100% or 0%, the standard deviation is a minimum, 1.05%. The above findings contribute to a comprehensive understanding of the PSF nonuniformity effect, have the potential to compensate for the bias of proportion estimation and present its confidence interval at any probability level.
The Effects of Religion on Enduring Marriages
Authors: Mullins David
Published: May 2016

This article adds to recent literature in the study of religion and marriage by examining older couples’ use of religion as a cultural repertoire in enduring marriages. The study includes qualitative analysis of in-depth interviews with 43 married, Christian couples. Couples reported four predominant social contexts that gave sacred meanings to their marriage: prayer, worship services and sermons, first-rite rituals and communion. These social contexts magnify sacred meanings within religious cultural repertoires by enhancing older couples’ perceptions of their marriages as sacred through formal and public recognition of their marriage longevity, lauding their marriage longevity as a blessing from God to be emulated, promoting religious meanings of familism and giving positive marriage outcomes sacred meanings. Negative effects of religion on marriage outcomes occurred among older couples when lived experiences of religion conflicted with their cultural expectations for enduring marriages.
A Classification of Adaptive Feedback in Educational Systems for Programming
Authors: Le Nguyen-Thinh
Published: May 2016

Over the last three decades, many educational systems for programming have been developed to support learning/teaching programming. In this paper, feedback types that are supported by existing educational systems for programming are classified. In order to be able to provide feedback, educational systems for programming deployed various approaches to analyzing students’ programs. This paper identifies analysis approaches for programs and introduces a classification for adaptive feedback supported by educational systems for programming. The classification of feedback is the contribution of this paper.
Use of Reporter Genes in the Generation of Vaccinia Virus-Derived Vectors
Authors: Al Ali Sally , Baldanta Sara , Fernández-Escobar Mercedes , Guerra Susana
Published: May 2016

Vaccinia virus (VACV) is one of the most extensively-studied viruses of the Poxviridae family. It is easy to genetically modify, so it has become a key tool for many applications. In this context, reporter genes facilitate the study of the role of foreign genes introduced into the genome of VACV. In this review, we describe the type of reporter genes that have been used to generate reporter-expressing VACV and the applications of the recombinant viruses obtained. Reporter-expressing VACV are currently employed in basic and immunology research, in the development of vaccines and cancer treatment.
STUDY ON SHEAR CONNECTION OF BRIDGE STEEL TRUSS AND CONCRETE SLAB DECK
Authors: MACHACEK Josef , CHARVAT Martin
Published: May 2016

Longitudinal shear flow in the connection of a bridge steel truss upper chord and a concrete bridge slab is studied both in elastic and plastic stages of loading up to the shear connection collapse. First the distribution of the shear flow with an increasing level of loading is shown as resulted from 3D MNA (materially nonlinear analysis) using ANSYS software package and a former experimental verification. Nevertheless, the flow peaks in elastic stages above truss nodes due to local transfer of forces are crucial for design of the shear connection in bridges. Therefore a simple approximate 2D elastic frame modelling was suggested for subsequent extensive parametric studies. The study covers various loadings including the design loading of bridges and demonstrates importance of rigidity of the shear connec­tion, rigidity of an upper steel truss chord and rigidity of a concrete deck. Temperature effects and a creep of concrete are also studied. The substantial part of the study deals also with concentration of shear connectors in the area of steel truss nodes and influence of the connector densification on distribution of the longitudinal shear along an interface of the steel truss chord and the concrete deck. Eurocode 4 approach and quest to find an optimum design of the shear connection in composite bridge trusses are discussed. Finally the resulting recommendations for a practical design are presented.
LIGHT SCATTERING BY FRACTAL DUST AGGREGATES. I. ANGULAR DEPENDENCE OF SCATTERING
Authors: Tazaki Ryo , Tanaka Hidekazu , Okuzumi Satoshi , Kataoka Akimasa , Nomura Hideko
Published: May 2016

In protoplanetary disks, micron-sized dust grains coagulate to form highly porous dust aggregates. Because the optical properties of these aggregates are not completely understood, it is important to investigate how porous dust aggregates scatter light. In this study, the light scattering properties of porous dust aggregates were calculated using a rigorous method, the T-matrix method, and the results were then compared with those obtained using the Rayleigh–Gans–Debye (RGD) theory and Mie theory with the effective medium approximation (EMT). The RGD theory is applicable to moderately large aggregates made of nearly transparent monomers. This study considered two types of porous dust aggregates—ballistic cluster–cluster agglomerates (BCCAs) and ballistic particle–cluster agglomerates. First, the angular dependence of the scattered intensity was shown to reflect the hierarchical structure of dust aggregates; the large-scale structure of the aggregates is responsible for the intensity at small scattering angles, and their small-scale structure determines the intensity at large scattering angles. Second, it was determined that the EMT underestimates the backward scattering intensity by multiple orders of magnitude, especially in BCCAs, because the EMT averages the structure within the size of the aggregates. It was concluded that the RGD theory is a very useful method for calculating the optical properties of BCCAs.
DYNAMICS AND TRANSIT VARIATIONS OF RESONANT EXOPLANETS
Authors: Nesvorný David , Vokrouhlický David
Published: May 2016

Transit timing variations (TTVs) are deviations of the measured midtransit times from the exact periodicity. One of the most interesting causes of TTVs is the gravitational interaction between planets. Here we consider a case of two planets in a mean motion resonance (orbital periods in a ratio of small integers). This case is important because the resonant interaction can amplify the TTV effect and allow planets to be detected more easily. We develop an analytic model of the resonant dynamics valid for small orbital eccentricities and use it to derive the principal TTV terms. We find that a resonant system should show TTV terms with two basic periods (and their harmonics). The resonant TTV period is proportional (m/M
*)−2/3, where m and M
* are the planetary and stellar masses. For m = 10−4
M
*, for example, the TTV period exceeds the orbital period by about two orders of magnitude. The amplitude of the resonant TTV terms scales linearly with the libration amplitude. The ratio of the TTV amplitudes of two resonant planets is inversely proportional to the ratio of their masses. These and other relationships discussed in the main text can be used to aid the interpretation of TTV observations.
SMALL-SCALE CONFORMITY OF THE VIRGO CLUSTER GALAXIES
Authors: Lee Hye-Ran , Lee Joon Hyeop , Jeong Hyunjin , Park Byeong-Gon
Published: May 2016

We investigate the small-scale conformity in color between bright galaxies and their faint companions in the Virgo Cluster. Cluster member galaxies are spectroscopically determined using the Extended Virgo Cluster Catalog and the Sloan Digital Sky Survey Data Release 12. We find that the luminosity-weighted mean color of faint galaxies depends on the color of adjacent bright galaxy as well as on the cluster-scale environment (gravitational potential index). From this result for the entire area of the Virgo Cluster, it is not distinguishable whether the small-scale conformity is genuine or if it is artificially produced due to cluster-scale variation of galaxy color. To disentangle this degeneracy, we divide the Virgo Cluster area into three sub-areas so that the cluster-scale environmental dependence is minimized: A1 (central), A2 (intermediate), and A3 (outermost). We find conformity in color between bright galaxies and their faint companions (color–color slope significance S ∼ 2.73σ and correlation coefficient

) in A2, where the cluster-scale environmental dependence is almost negligible. On the other hand, the conformity is not significant or very marginal (S ∼ 1.75σ and

) in A1. The conformity is not significant either in A3 (S ∼ 1.59σ and

), but the sample size is too small in this area. These results are consistent with a scenario in which the small-scale conformity in a cluster is a vestige of infallen groups and these groups lose conformity as they come closer to the cluster center.
LYα SIGNATURES FROM DIRECT COLLAPSE BLACK HOLES
Authors: Dijkstra Mark , Gronke Max , Sobral David
Published: May 2016

“Direct collapse black holes” (DCBHs) provide possible seeds for supermassive black holes that exist at

. We study Lyα radiative transfer through simplified representations of the DCBH scenario. We find that gravitational heating of the collapsing cloud gives rise to a Lyα cooling luminosity of up to

erg s−1. Photoionization by a central source boosts the Lyα luminosity to

erg s−1, where

denotes the mass of the black hole powering this source. We predict that the width and velocity offsets of the Lyα spectral line range from a few tens to few thousands km s−1, depending sensitively on the evolutionary state of the cloud. We apply our predictions to observations of CR7, a luminous Lyα emitter at

, which may be associated with a DCBH. If CR7 is powered by a black hole, then its Lyα flux requires that

, which exceeds the mass of DCBHs when they first form. The observed width of the Lyα spectrum favors the presence of only a low column density of hydrogen,

. The shape of the Lyα spectrum indicates that this gas is outflowing. These requirements imply that if CR7 harbors a DCBH, then the physical conditions that enabled its formation have been mostly erased, which is in agreement with theoretical expectations. These constraints weaken if the observed Lyα emission represents the central peak of a more extended halo.
NGC 5195 IN M51: FEEDBACK “BURPS” AFTER A MASSIVE MEAL?
Authors: Schlegel E. M. , Jones C. , Machacek M. , Vega L. D.
Published: May 2016

We describe a double-arc-like X-ray structure lying ∼15″–30″ (∼0.8–1.7 kpc) south of the NGC 5195 nucleus, visible in the merged exposures of long Chandra pointings of M51. The curvature and orientation of the arcs argues for a nuclear origin. The arcs are radially separated by ∼15″ (∼1 kpc), but are rotated relative to each other by ∼30°. From an archival image, we find a slender Hα-emitting region just outside the outer edge of the outer X-ray arc, suggesting that the X-ray-emitting gas plowed up and displaced the Hα-emitting material from the galaxy core. Star formation may have commenced in that arc. Hα emission is present at the inner arc, but appears more complex in structure. In contrast to an explosion expected to be azimuthally symmetric, the X-ray arcs suggest a focused outflow. We interpret the arcs as episodic outbursts from the central super-massive black hole (SMBH). We conclude that NGC 5195 represents the nearest galaxy exhibiting on-going, large-scale outflows of gas, in particular, two episodes of a focused outburst of the SMBH. The arcs represent a clear demonstration of feedback.
EVOLUTION OF MOLECULAR AND ATOMIC GAS PHASES IN THE MILKY WAY
Authors: Koda Jin , Scoville Nick , Heyer Mark
Published: May 2016

We analyze radial and azimuthal variations of the phase balance between the molecular and atomic interstellar medium (ISM) in the Milky Way (MW) using archival CO(J = 1-0) and HI 21 cm data. In particular, the azimuthal variations—between the spiral arm and interarm regions—are analyzed without any explicit definition of the spiral arm locations. We show that the molecular gas mass fraction, i.e.,

, varies predominantly in the radial direction: starting from

at the center, remaining

to

and decreasing to ∼10%–20% at

when averaged over the whole disk thickness (from ∼100% to ≳60%, then to ∼50% in the midplane). Azimuthal, arm-interarm variations are secondary: only

in the globally molecule-dominated inner MW, but becoming larger, ∼40%–50%, in the atom-dominated outskirts. This suggests that in the inner MW the gas remains highly molecular (

) as it moves from an interarm region into a spiral arm and back into the next interarm region. Stellar feedback does not dissociate molecules much, and the coagulation and fragmentation of molecular clouds dominate the evolution of the ISM at these radii. The trend differs in the outskirts where the gas phase is globally atomic (

). The HI and H2 phases cycle through spiral arm passage there. These different regimes of ISM evolution are also seen in external galaxies (e.g., the LMC, M33, and M51). We explain the radial gradient of

using a simple flow continuity model. The effects of spiral arms on this analysis are illustrated in the Appendix.
AN EXTREMELY HIGH VELOCITY MOLECULAR JET SURROUNDED BY AN IONIZED CAVITY IN THE PROTOSTELLAR SOURCE SERPENS SMM1
Authors: Hull Charles L. H. , Girart Josep M. , Kristensen Lars E. , Dunham Michael M. , Rodríguez-Kamenetzky Adriana , Carrasco-González Carlos , Cortés Paulo C. , Li Zhi-Yun , Plambeck Richard L.
Published: May 2016

We report Atacama Large Millimeter/submillimeter Array (ALMA) observations of a one-sided, high-velocity (∼80 km s−1) CO(J =

2
→
1

) jet powered by the intermediate-mass protostellar source Serpens SMM1-a. The highly collimated molecular jet is flanked at the base by a wide-angle cavity; the walls of the cavity can be seen in both 4 cm free–free emission detected by the Very Large Array and 1.3 mm thermal dust emission detected by ALMA. This is the first time that ionization of an outflow cavity has been directly detected via free–free emission in a very young, embedded Class 0 protostellar source that is still powering a molecular jet. The cavity walls are ionized either by UV photons escaping from the accreting protostellar source or by the precessing molecular jet impacting the walls. These observations suggest that ionized outflow cavities may be common in Class 0 protostellar sources, shedding further light on the radiation, outflow, and jet environments in the youngest, most embedded forming stars.
ULTRAHIGH-ENERGY COSMIC RAYS AND BLACK HOLE MERGERS
Authors: Kotera Kumiko , Silk Joseph
Published: May 2016

The recent detection of the gravitational-wave source GW150914 by the LIGO collaboration motivates a speculative source for the origin of ultrahigh-energy cosmic rays as a possible byproduct of the immense energies achieved in black hole (BH) mergers, provided that the BHs have spin, as seems inevitable, and there are relic magnetic fields and disk debris remaining from the formation of the BHs or from their accretion history. We argue that given the modest efficiency

<
0.01

required per event per unit of gravitational-wave energy release, merging BHs potentially provide an environment for accelerating cosmic rays to ultrahigh energies. The presence of tidally disrupted planetary or asteroidal debris could lead to associated fast radio bursts.
Se passer de la pulsion de mort ? Une diagonale à travers le système philosophique d’Alain Badiou
Authors: Boni Livio
Published: May 2016

Comment se fait-il que le penseur qui plus se réclame, sur la scène contemporaine de la philosophie française, d’un certain héritage lacanien, récuse pour autant résolument un des concepts fondamentaux de la spéculation psychanalytique, le concept de pulsion de mort ? C’est la question qui oriente cette traversée de la construction théorique de Badiou, se concentrant sur deux aspects de cette dernière : sa tentative de déconstruire le motif heideggerien de l’être-pour-la mort à travers la réactivation d’une conception logico-matérialiste de la mort comme relation  ; et la notion d’anti-philosophie, notion d’origine lacanienne au moyen de laquelle Badiou se rapproche à sa manière de l’idée d’une auto-negativité fondamentale faisant partie des conditions de possibilité du geste philosophique lui-même.
Sur quelques questions épistémologiques à propos de l’ épistèmê aisthêtikê
Authors: Jimenez Marc
Published: May 2016

Néologisme forgé par Baumgarten, censé désigner la « science de la connaissance sensible », le terme « esthétique » s’impose difficilement dans la France des Lumières. Que désigne au juste ce mot : une théorie de la sensibilité, une science du beau, ou bien une doctrine du goût ? Lorsqu’au début du xx e siècle, le terme a enfin droit de cité dans les cursus académiques, la récente discipline « Esthétique » – bénéficiant d’une chaire à la Sorbonne – n’est destinée qu’à constituer une science nouvelle nommée « science de l’art », Kunstwissenschaft , « à côté de l’histoire de l’art » – prend soin de préciser Victor Basch, philosophe, germaniste, et premier titulaire de la chaire en question. L’esthétique serait-elle condamnée, encore de nos jours, à l’indétermination sémantique et au flou épistémologique ?
Partager les fruits de l’innovation avec les communautés autochtones ou locales : les 12 travaux d’Hercule ?
Authors: Yentcharé Pag-yendu M.
Published: May 2016

Le Protocole de Nagoya sur l’accès aux ressources génétiques et au partage juste et équitable des avantages résultant de leur utilisation, relatif à la Convention sur la diversité biologique, est entré en vigueur le 12 octobre 2014. Il revient aux législations nationales de mettre en œuvre ce traité international. À son article 5.5, le Protocole de Nagoya pose le principe du partage juste et équitable des avantages avec les communautés autochtones ou locales, du fait de l’utilisation de leurs savoirs traditionnels associés aux ressources génétiques. L’auteur, dans cet article, mobilise un récit de la mythologie romaine, celui d’Hercule, pour souligner la complexité que suppose la mise en œuvre de cette disposition pour le juriste. Celle-ci prend la forme de questionnements épistémologiques et difficultés pratiques, et préfigure un important travail d’innovation pour la réalisation de l’objectif de justice environnementale, et plus largement de développement durable recherché par cet accord multilatéral sur l’environnement.
Design and Implementation of Music Teaching Platform in College Based on Android Mobile Technology
Authors: Tong Juan
Published: May 2016

multi-media teaching is the trend for improving teaching approach, yet what is currently prevalent in university education is its low interaction and inefficient knowledge absorption level. According to the characteristics of multimedia teaching, this paper discussed application of informational teaching resources in university music teaching and explored ways to improve the quality of music teaching. This paper took chorus conduction in university music course as experiment subject, through analysis of teaching resources based on Android system and its design principle, analysis of teaching machine based on android system covered various aspects which included teaching process, resources interface, interactive approaches, and effect assessment. The paper used methods like interview, statistics and comparing the efficiency difference before and after its application. Through the research, we found that optimized android teaching system can improve students’ scores and overall quality level, which provides ideas and data backup applications of modern teaching resources in university music course.
Designing Educational Paths in Virtual Worlds for a Successful Hands-On Learning
Authors: Tavernise Assunta , Bertacchini Francesca
Published: May 2016

“Connecting European Culture through New Technology – NetConnect” is a project promoted by Culture 2000 European Programme, in which three 3D cultural scenarios have been realized and used for educational purposes. This chapter illustrates how the immersive NetConnect virtual worlds offer a technology-enhanced constructivist learning through different educational paths, that have been designed according to different levels: global/particular perspective (cultural goods are known as single historical and artistic product, as well as in relational terms with the urban space); manipulation (users can explore the content and learn by doing); - a multimedia section including videos, Pictures, and texts; details (daily life scenes are reconstructed on the basis of ancient documentation providing specific information).
Faculty Adoption of 3D Avatar-Based Virtual World Learning Environments
Authors: Dass Susan , Dabbagh Nada
Published: May 2016

An exploratory, mixed methods case study was conducted within a design-based research approach to explore nursing faculty (n = 8) consideration of adopting virtual worlds as a learning environment before and after a three session Professional Development Intervention (PDI). Surveys, interviews, and session transcripts revealed the PDI did improve faculty consideration of virtual worlds but only three participants would likely pursue virtual worlds as a learning environment. Multiple adoption model constructs such as perceived ease of use were explored but no one construct was found to be an indicator of adoption intentions. However, personal innovativeness was considered a demographic likely to influence adoption. Additionally, those participants that self-identified concrete, perceivably doable learning activities for a virtual world that offered a relative advantage over current practice may be key to discerning those who may adopt a virtual world.
Survey of Students' Perception and the Influence of Learning Style Preferences on Learner's Intention to Use 3D Visualization Instruction
Authors: Hung Yu-Hsin , Chang Ray I. , Lin Chun Fu
Published: May 2016

3D visualization specifically has been widely applied in a broad range of fields, including computer science, pedagogy, and so forth. 3D visualization instruction has become the essential tool that uses computer programs to generate 3D representations of manmade objects. For users, 3D visualization instruction can be manipulated, altered and efficiently communicated to others, and it is efficient for teaching and learning. The aim of this study is investigating students' perception toward 3D visualization instruction, and the influence of learning-style preferences on learners' intentions to use 3D visualization instruction. We are trying to develop the experiment which undergraduate students participated in this study, the purpose of which was to investigate the utilize 3D visualization instruction access to the single learning style and multiple learning styles. Data mining technology was employed in this study to identify multiple learning styles. The result showed that high visual and high sensing learning style has potential of using 3D visualization instruction.
Chaotic and Complex Situations in Girls' Education
Authors: Özbaş Mehmet
Published: May 2016

It is mainly concentrated on variables which prevent girls' education in this study. The aim of this study is to describe chaos, complication and antidemocratic practices that emerge on girls' education. A wide comprehensive literature survey is performed on variables which concern the variables of girls' education for the scope of the study. This study is a survey designed model that aims to define the properties concerning the girls' education. Many social, economic, political and cultural problems create negative effects on girls' education. Not being able to make democracy a life style brings along girls' not being able to make use of education as it should be which is a human right. As a result, it is emphasized that only “whole democratic life style” practice for all could solve the problem of “social inequality of girls” which is enduring for ages.
The Influence of Changing Paradigms on Educational Management and School Administration
Authors: Erçetin Şefika Şule , Bisaso Ssali Muhammadi
Published: May 2016

In this study, an attempt was made to explore and examine the influence of changing paradigms on educational management. In approaching the chapter, the authors discussed the status-quo by describing the traditional management paradigm. The drivers to change which triggered off the rise of a new paradigm were highlighted and these dully led to a description of the new paradigm whose principles and theories were fully examined. The chapter then engaged a detailed analysis of the various changes in the education management and school administration field consequent to the shift in paradigms. The authors feel that an understanding of the major paradigms in education as well as those critical to educational management and administration is a universal calling. There is no gain saying, therefore, that this chapter will go a long way into improving educational management and administration both at structural level and at the school level.
Conflict Management in Higher Educational Institutions
Authors: Miiro Farooq
Published: May 2016

Conflicts are inevitable and very common in educational institutions the world over. Conflict happens whenever and wherever in HEIs. Conflicts also rampantly occur at HEIs. Conflicts are therefore inevitable although this should not cause alarm truth is that they are natural and have benefits to organizational progress. It can therefore be noted that conflict management is part and parcel of school administration challenges that HEIs managers should handle as part of institutional politics, with extra care to benefit system and its workers. Therefore, experienced managers should motivate different conflicting groups to improve their methods and attitude towards work so that organizational goal can be achieved in the most effective manner. This however is a tough undertaking since it requires technical knowledge and skills on the part of leader. Accordingly, understanding complexity theory and applying it effectively in organizational management can transform conflict into an effective catalyst for improving school system.
Functional Reuse and Intensification of Rural-Urban Context
Authors: Cattaneo Tiziano , De Lotto Roberto , Venco Elisabetta Maria
Published: May 2016

In regional and urban planning such as in design actions they are usually involved different themes and disciplines; especially when the goal is to improve, restore and re-functionalize existing minor settlements in rural-urban context. For this reason it is necessary to define integrated methodologies able to face inter-scalar issues and interdisciplinary themes. Authors propose a framework for a decision support system based on the treatment of geographical data and on the integration of the data sets that have dissimilar origin, diverse formats (they may be not only digital) and different meaning value. This complete data set refers to various disciplines and it is possible to deduce specific knowledge throughout analytical passages and assessment steps. In the paper authors describe: a methodological approach to support planning activities; the technical support to seek a (dynamic) balance between urban density and rural fragmentation; a Best Practices database to support scenarios in rural-urban context. Authors first expose the application field, than the logical framework of the whole process, then describe some related spatial analysis applications and finally they introduce comprehensive case study of the whole procedure.
The Marker Cluster
Authors: Sebastian Meier
Published: May 2016

The growing amount of gathered, stored and available data is creating a need for useful mass-data visualizations in many domains. The mapping of large spatial data sets is not only of interest for experts anymore, but, with regard to the latest advances in web cartography, also moves into the domain of public cartographic applications. One interactive web-based cartographic interface design pattern that helps with visualizing and interacting with large, high density data sets is the marker cluster; a functionality already in use in many web-based products and solutions. In this article, the author will present their ongoing research on the problem of “too many markers.” They will present an empirical evaluation and comparison of marker cluster techniques and similar approaches, including heatmaps and tiled heatmaps. They conclude with a first concept for overcoming some of the obstacles that they were able to identify in their study and thereby introduce a new direction for further research.
Impact of Social Media towards Improving Productivity at AADC
Authors: Ezziane Zoheir , Al Kaabi Abdulrahman Abdulla
Published: May 2016

This research explains how social networking links individuals and organizations and how they become connected through similar tastes and preferences in interdependent relationships. It describes companies who have made the social media as an e-marketing tool to attract global consumers of all ages, education levels or even business needs. Abu-Dhabi Distribution Company (AADC) in the UAE is presently adopting innovative online systems for upgrading customer services and want to add social networks to their management information systems (MIS). This paper explains how AADC can incorporate social networking into its MIS processes to determine consumer needs and upgrade customer services.
The Outcome of Tricalcium Phosphate Wedges Used in Opening High Tibial Osteotomy
Authors: Cristescu Ioan , Angheluta Cristi , Safta Florin , Vilcioiu Daniel , Gjoni Alsed , Istodorescu Mircea , Antoniac Iulian
Published: May 2016

In the case of patients suffering from medial compartment osteoarthritis of the knee, a high tibial osteotomy is the preferred treatment for preserving the knee articulation and correcting the knee biomechanical axis. Nowadays, the open wedge high tibial osteotomy is the preferred surgical technique for treating patient with varus knee angulation. The procedure consists in creating a medial gap in the proximal tibial metaphysis that is filled with autologus bone graft or bone substitutes. Synthetic bone substitutes made by bioceramics like hydroxyapatite or tricalcium phosphate are becoming more popular. Tricalcium phosphate (TCP) used as a bone substitute has shown to have osteoconductive properties and it is resorbable. We describe our experience in Orthopaedics III Department of the Clinical Emergency Hospital Bucharest, where we treated a total of 26 patients suffering from medial compartment osteoarthritis of the knee with high tibial open wedge osteotomy, between 2011 and 2015. TCP wedge implants were successfully used as bone substitutes for the tibial medial osteotomy in conjunction with a proximal tibia plate and screws. Open wedge high tibia osteotomy used for correcting the biomechanical axis of the lower limb is a safe surgical procedure that preserves the anatomical knee joint.
Treatment of Degenerative Disc Disease with the ProDisc-C Cervical Disc Prosthesis: Literature Review, Interdisciplinary Aspects and Personal Experience
Authors: Nica Dan A. , Maranduca Minela A. , Moisa Horatiu , Copaciu Razvan , Ciurea Alexandru Vlad
Published: May 2016

Cervical disc herniations represent the most frequent cervical-level pathology in patients aged 40 and above. Symptoms usually include C6-C7 radiculopathy, which has a prevalence of 3.3/1000 individuals. There still is a debate on whether any gender is more frequently affected, as some authors report women are more frequently affected [2, 3] while others claim both genders are equally affected. Ever since the 1950s the standard treatment for such patients was represented by Anterior Cervical Discectomy and Fusion (ACDF), however, concern for the development of adjacent level degeneration after the fusion of mobile vertebral segments has increased the interest in developing new dynamic disc prostheses designed to mimic the functions and natural motion of the spine. The purpose of this paper is to summarize, in a comprehensive literature-review-type article, the existing data regarding the ProDisc-C spinal implant within the OVID, SCOPUS and MEDLINE databases while at the same time presenting the personal experience of the authors using the above-mentioned implant.
Determination of Total Length in Human Permanent Teeth - An Anthropometric Study
Authors: Popescu Mugur George , Marian Diana , Popovici Ramona Amina , Ștefănescu Teodora
Published: May 2016

The correct endodontic treatment involves the exact determination of the working length. This is accomplished by combining several techniques: the tactile technique, X-ray with the needle or the endodontic probe in the root canal and comparing with the average tooth length.The determination of average tooth length depends on the geographic area. The current table used in practice contains the values gathered on a population group that is different than ours; the table has been made on Caucasian subjects.In conclusion, our study aims to determine the proper average values of our geographic zone, the table obtained by completing the equation of the endodontic therapy that will admit the proximity of the Romanian reality.
Biocompatibility of Calcium Hydroxide - Based Root Canal Sealers: A Histological Study
Authors: Monea Monica , Bereșescu Gabriela , Stoica Alexandra , Ștefănescu Teodora
Published: May 2016

Biocompatibility has been defined as the ability of a material to function in a specific site, in contact with host tissues but without inducing any undesirable local or systemic reaction.The aim of this study is to evaluate the biocompatibility of calcium hydroxide-based endodontic sealers and to compare it with a resin-based material, by measuring the degree of inflammation induced by these products after subcutaneous implantation in rats. We used 12 animals divided in 3 study groups and 1 control group; implants with Mineral Trioxide Aggregate (MTA), AH26 and Sealapex were placed in subcutaneous tissue and histological evaluation was carried out after 7, 14 and 21 days. We obtained comparable results between MTA and Sealapex, which demonstrates that these materials have similar degrees of biocompatibility. Based on this experimental study, calcium hydroxide containing cements express similar biocompatibilities. Further clinical studies are necessary in order to evaluate the healing properties and apical seal of these materials.
Antiplatelet Effect of Allium cepa L. Extracts: A Short Review
Authors: Saplonţai-Pop Aniela , Moldovan Marioara , Ionescu Corina , Suciu-Petrescu Malina , Cojocaru Ileana , Oprean Radu
Published: May 2016

Particular importance is given to natural therapy since ancient times, the main advantages are immediate availability, high tolerability for the body and reduced incidence of adverse reactions, compared to synthetic pharmaceuticals drugs. Allium cepa L. extracts has gained a special attention in recent times, some of their compounds showing promising antioxidant activity, anti-diabetic, anti-inflammatory, anticancer, antimicrobial, antihyperlipidemic, fibrinolytic, antiplatelet effects, immunomodulators, anti-ischemic effect. This review is to compile the valuable pharmacological effect of thiosulfinates compounds from Allium cepa L. extracts.