bluuebunny/crossref_metadata_2025 huggingface dataset:
Nonlinear Fusion of Multispectral Citrus Fruit Image Data with Information Contents
Authors: Li Peilin , Lee Sang-Heon , Hsu Hung-Yao , Park Jae-Sam
Published: January 2017

The main issue of vison-based automatic harvesting manipulators is the difficulty in the correct fruit identification in the images under natural lighting conditions. Mostly, the solution has been based on a linear combination of color components in the multispectral images. However, the results have not reached a satisfactory level. To overcome this issue, this paper proposes a robust nonlinear fusion method to augment the original color image with the synchronized near infrared image. The two images are fused with Daubechies wavelet transform (DWT) in a multiscale decomposition approach. With DWT, the background noises are reduced and the necessary image features are enhanced by fusing the color contrast of the color components and the homogeneity of the near infrared (NIR) component. The resulting fused color image is classified with a C-means algorithm for reconstruction. The performance of the proposed approach is evaluated with the statistical F measure in comparison to some existing methods using linear combinations of color components. The results show that the fusion of information in different spectral components has the advantage of enhancing the image quality, therefore improving the classification accuracy in citrus fruit identification in natural lighting conditions.
A Non-Intrusive Cyber Physical Social Sensing Solution to People Behavior Tracking: Mechanism, Prototype, and Field Experiments
Authors: Jia Yunjian , Zhou Zhenyu , Chen Fei , Duan Peng , Guo Zhen , Mumtaz Shahid
Published: January 2017

Tracking people’s behaviors is a main category of cyber physical social sensing (CPSS)-related people-centric applications. Most tracking methods utilize camera networks or sensors built into mobile devices such as global positioning system (GPS) and Bluetooth. In this article, we propose a non-intrusive wireless fidelity (Wi-Fi)-based tracking method. To show the feasibility, we target tracking people’s access behaviors in Wi-Fi networks, which has drawn a lot of interest from the academy and industry recently. Existing methods used for acquiring access traces either provide very limited visibility into media access control (MAC)-level transmission dynamics or sometimes are inflexible and costly. In this article, we present a passive CPSS system operating in a non-intrusive, flexible, and simplified manner to overcome above limitations. We have implemented the prototype on the off-the-shelf personal computer, and performed real-world deployment experiments. The experimental results show that the method is feasible, and people’s access behaviors can be correctly tracked within a one-second delay.
Continuous Space Estimation: Increasing WiFi-Based Indoor Localization Resolution without Increasing the Site-Survey Effort
Authors: Hernández Noelia , Ocaña Manuel , Alonso Jose , Kim Euntai
Published: January 2017

Although much research has taken place in WiFi indoor localization systems, their accuracy can still be improved. When designing this kind of system, fingerprint-based methods are a common choice. The problem with fingerprint-based methods comes with the need of site surveying the environment, which is effort consuming. In this work, we propose an approach, based on support vector regression, to estimate the received signal strength at non-site-surveyed positions of the environment. Experiments, performed in a real environment, show that the proposed method could be used to improve the resolution of fingerprint-based indoor WiFi localization systems without increasing the site survey effort.
Wine Tourism and Sustainability: A Review
Authors: Montella Marta
Published: January 2017

The literature on tourism and events is endless; a niche in this wide research field is represented by food and wine research. The growing interest shown by wine tourists has nurtured the proliferation of wine events and the growth of the wine tourism business; as a consequence, academicians’ interest in this issue has increased. At the same time, research on tourism and events is an evolving field and it has moved from a main economic focus to a broader perspective: some scholars have highlighted how the growing interest towards green and sustainable practices has stimulated academic research and a lot has been done on the management of environmental issues. Given the resonance of wine tourism and the role it has for local and rural development, the interest towards the issue of sustainability in wine is more than warranted. Thus, this paper aims to provide some useful insights about where research has gone and where it is going; a thorough literature review has been performed.
On the Relationship between Holocene Geomorphic Evolution of Rivers and Prehistoric Settlements Distribution in the Songshan Mountain Region of China
Authors: Lu Peng , Mo Duowen , Wang Hui , Yang Ruixia , Tian Yan , Chen Panpan , Lasaponara Rosa , Masini Nicola
Published: January 2017

This paper deals with the study of Holocene geomorphic evolution of rivers around Songshan Mountain in relation to human frequentation in Prehistoric periods. The investigations were performed by means of an integration of GIS data processing; field surveys and particle size analysis. In 8000–3000 aBP; in the Songshan Mountain Region, large-scale river sedimentation occurred. This increased the elevation of river beds that were higher than today. After 3000 aBP; the upper reaches of the rivers experienced a down cut; while the lower reaches experienced continuing sedimentation. The data on the elevation of prehistoric settlements above the river levels were obtained from Digital Elevation Models (DEMs). These data were corrected according to the evolutionary features of fluvial landforms in order to obtain synchronous elevations above river levels of prehistoric settlements. The relationship between sediment distribution and the Holocene geomorphic evolution was investigated through the statistical analysis of the elevation above the river levels. Outputs from our analyses enabled us to differentiate three evolutionary stages. During the first one, related to Peiligang culture (9000–7500 aBP), populations mainly settled on both hilly relief and high plateaus depending on their agriculture production modes. During the second stage, from Yangshao (7500–5000 aBP) to the Longshan period (5000–4000 aBP), settlements were mainly distributed on mountainous areas and hilly lands to avoid flooding and to develop agriculture. Finally, during the Xiashang culture (4000–3000 aBP), a large number of settlements migrated to the plain area to facilitate trade of goods and cultural exchanges.
Multi-Objective Optimization for Equipment Capacity in Off-Grid Smart House
Authors: Miyazato Yasuaki , Tobaru Shota , Uchida Kosuke , Celestino Muarapaz Cirio , Motin Howlader Abdul , Senjyu Tomonobu
Published: January 2017

Recently, the off-grid smart house has been attracting attention in Japan for considering global warming. Moreover, the selling price of surplus power from the renewable energy system by Feed-In Tariff (FIT) has declined. Therefore, this paper proposes an off-grid smart house with the introduced Photovoltaic (PV) system, Solar Collector (SC) system, Hot Water Heat Pump (HWHP), fixed battery and Electric Vehicle (EV). In this research, a multi-objective optimization problem is considered to minimize the introduced capacity and shortage of the power supply in the smart house. It can perform the electric power procurement from the EV charging station for the compensation of a shortage of power supply. From the simulation results, it is shown that the shortage of the power supply can be reduced by the compensation of the EV power. Furthermore, considering the uncertainty for PV output power, reliable simulation results can be obtained.
Distinct Neurotoxicity Profile of Listeriolysin O from Listeria monocytogenes
Authors: Maurer Jana , Hupp Sabrina , Bischoff Carolin , Foertsch Christina , Mitchell Timothy , Chakraborty Trinad , Iliev Asparouh
Published: January 2017

Cholesterol-dependent cytolysins (CDCs) are protein toxins that originate from Gram-positive bacteria and contribute substantially to their pathogenicity. CDCs bind membrane cholesterol and build prepores and lytic pores. Some effects of the toxins are observed in non-lytic concentrations. Two pathogens, Streptococcus pneumoniae and Listeria monocytogenes, cause fatal bacterial meningitis, and both produce toxins of the CDC family—pneumolysin and listeriolysin O, respectively. It has been demonstrated that pneumolysin produces dendritic varicosities (dendrite swellings) and dendritic spine collapse in the mouse neocortex, followed by synaptic loss and astrocyte cell shape remodeling without elevated cell death. We utilized primary glial cultures and acute mouse brain slices to examine the neuropathological effects of listeriolysin O and to compare it to pneumolysin with identical hemolytic activity. In cultures, listeriolysin O permeabilized cells slower than pneumolysin did but still initiated non-lytic astrocytic cell shape changes, just as pneumolysin did. In an acute brain slice culture system, listeriolysin O produced dendritic varicosities in an NMDA-dependent manner but failed to cause dendritic spine collapse and cortical astrocyte reorganization. Thus, listeriolysin O demonstrated slower cell permeabilization and milder glial cell remodeling ability than did pneumolysin and lacked dendritic spine collapse capacity but exhibited equivalent dendritic pathology.
A Semipersistent Plant Virus Differentially Manipulates Feeding Behaviors of Different Sexes and Biotypes of Its Whitefly Vector
Authors: Lu Shaohua , Li Jingjing , Wang Xueli , Song Danyang , Bai Rune , Shi Yan , Gu Qinsheng , Kuo Yen-Wen , Falk Bryce , Yan Fengming
Published: January 2017

It is known that plant viruses can change the performance of their vectors. However, there have been no reports on whether or how a semipersistent plant virus manipulates the feeding behaviors of its whitefly vectors. Cucurbit chlorotic yellows virus (CCYV) (genus Crinivirus, family Closteroviridae) is an emergent plant virus in many Asian countries and is transmitted specifically by B and Q biotypes of tobacco whitefly, Bemisia tabaci (Gennadius), in a semipersistent manner. In the present study, we used electrical penetration graph (EPG) technique to investigate the effect of CCYV on the feeding behaviors of B. tabaci. The results showed that CCYV altered feeding behaviors of both biotypes and sexes of B. tabaci with different degrees. CCYV had stronger effects on feeding behaviors of Q biotype than those of B biotype, by increasing duration of phloem salivation and sap ingestion, and could differentially manipulate feeding behaviors of males and females in both biotype whiteflies, with more phloem ingestion in Q biotype males and more non-phloem probing in B biotype males than their respective females. With regard to feeding behaviors related to virus transmission, these results indicated that, when carrying CCYV, B. tabaci Q biotype plays more roles than B biotype, and males make greater contribution than females.
The Biological Effects of Dickkopf1 on Small Cell Lung Cancer Cells and Bone Metastasis
Authors: Pang Hailin , Ma Ningqiang , Jiao Mi , Shen Weiwei , Xin Bo , Wang Tongfei , Zhang Feng , Liu Lili , Zhang Helong
Published: January 2017

The bone is among the most common sites of metastasis in patients with lung cancer. Over 30%40% of lung cancers can develop bone metastasis, and no effective therapeutic methods exist in clinic cases. Wnt/-catenin signaling and Dickkopf1 (DKK1) play important roles in the progression
of lung cancer, which preferentially metastasizes to the skeleton. However, the role of DKK1 in osteotropism of small cell lung cancer (SCLC) remains to be elucidated. This study aimed to define the role of DKK1 in SCLC bone metastasis and investigate the underlying mechanisms. Our results
demonstrated that the expression level of DKK1 was dramatically higher in bone metastatic SCLC cells (SBC-5 cell line) compared with that in cells without bone metastatic ability (SBC-3 cell line). Therefore, we hypothesized that DKK1 was involved in the bone metastasis of SCLC. We then suppressed
the DKK1 expression in SBC-5 cells by RNAi and found that downregulation of DKK1 can inhibit cell proliferation, colony formation, cell migration, and invasion, but increase the apoptosis rate. Downregulation of DKK1 did not affect the cell cycle progression of SBC-5 cells in vitro. In vivo,
downregulated DKK1 in SBC-5 cells resulted in attenuated bone metastasis. These results indicated that DKK1 may be an important regulator in bone metastases of SCLC, and targeting DKK1 may be an effective method to prevent and treat skeleton metastases in SCLC cases.
RASSF4 Overexpression Inhibits the Proliferation, Invasion, EMT, and Wnt Signaling Pathway in Osteosarcoma Cells
Authors: Zhang Minglei , Wang Dapeng , Zhu Tongtong , Yin Ruofeng
Published: January 2017

RASSF4, a member of the RASSF family, is broadly expressed in normal tissues but often inactivated in human cancers. Despite various studies on RASSF4, its role in osteosarcoma remains unclear. Therefore, in this study, we investigated the effects of RASSF4 expression on osteosarcoma
cells and explored the underlying mechanism. The results of our study showed that RASSF4 was lowly expressed in osteosarcoma tissues and cells. RASSF4 overexpression significantly inhibited proliferation, migration, and invasion as well as the EMT process in osteosarcoma cells. Meanwhile,
we found that RASSF4 overexpression markedly decreased the protein expression of -catenin, cyclin D1, and c-Myc in osteosarcoma cells. In conclusion, our findings showed that RASSF4 overexpression inhibits proliferation, invasion, EMT, and Wnt signaling pathway in osteosarcoma cells. Thus,
RASSF4 may be considered a novel target for osteosarcoma treatment.
miR-940 Upregulation Suppresses Cell Proliferation and Induces Apoptosis by Targeting PKC- in Ovarian Cancer OVCAR3 Cells
Authors: Wang Fang , Wang Zhihong , Gu Xiaoli , Cui Jinquan
Published: January 2017

Ovarian cancer remains as one of the most threatening malignancies for females in the world. This study investigated the pivotal role of miR-940 in the progression of ovarian cancer and to reveal the possible molecular mechanism of its action. Ovarian cancer OVCAR3 cells were transfected with the miR-940 vector, miR-940 inhibitor, and/or small interfering RNA (siRNA) targeting PKC- (si-PKC-), respectively. After transfection, cell viability and cell apoptosis were analyzed, as well as cell proliferation and apoptosis-related protein expression. Compared to the control, miR-940 upregulation suppressed cell viability but induced cell apoptosis. miR-940 upregulation increased the expression of p27, Hes1, survivin, and caspase 3, but decreased the expression of PKC-. In addition, elevated cell viability induced by the miR-940 inhibitor was significantly decreased by knockdown of PKC-, and reduced cell apoptosis induced by the miR-940 inhibitor was increased by knockdown of PKC-. Taken together, the results of our study suggest that upregulation of miR-940 may function as a suppressor in the progression of ovarian cancer by inhibiting cell proliferation and inducing apoptosis by targeting PKC-. This study may provide a basis for the possible application of miR-940 in illustrating the molecular pathogenic mechanism of ovarian cancer.
Depletion of NFBD1/MDC1 Induces Apoptosis in Nasopharyngeal Carcinoma Cells Through the p53ROSMitochondrial Pathway
Authors: Wang Zhihai , Liao Kui , Zuo Wenqi , Liu Xueliang , Qiu Zhili , Gong Zhitao , Liu Chuan , Zeng Quan , Qian Yi , Jiang Liang , Bu Youquan , Hong Suling , Hu Guohua
Published: January 2017

NFBD1, a signal amplifier of the p53 pathway, is vital for protecting cells from p53-mediated apoptosis and the early phase of DNA damage response under normal culture conditions. Here we investigated its expression in patients with nasopharyngeal carcinoma (NPC), and we describe the
biological functions of the NFBD1 gene. We found that NFBD1 mRNA and protein were more highly expressed in NPC tissues than in nontumorous tissues. To investigate the function of NFBD1, we created NFBD1-depleted NPC cell lines that exhibited decreased cellular proliferation and colony formation,
an increase in their rate of apoptosis, and an enhanced sensitivity to chemotherapeutic agents compared with in vitro controls. However, N-acetyl cysteine (NAC) and downregulation of p53 expression could partially reverse the apoptosis caused by the loss of NFBD1. Further analysis showed
that loss of NFBD1 resulted in increased production of intracellular reactive oxygen species (ROS) depending on p53, which subsequently triggered the mitochondrial apoptotic pathway. Using a xenograft model in nude mice, we showed that silencing NFBD1 also significantly inhibited tumor growth
and led to apoptosis. Taken together, our data suggest that inhibition of NFBD1 in NPC could be therapeutically useful.
MicroRNA-92a Promotes Cell Proliferation in Cervical Cancer via Inhibiting p21 Expression and Promoting Cell Cycle Progression
Authors: Su Zhiying , Yang Hua , Zhao Min , Wang Yanlong , Deng Guoyi , Chen Ruixin
Published: January 2017

MicroRNA-92a (miR-92a) generally plays a promoting role in human cancers, but the underlying mechanism in cervical cancer remains unclear. Here we studied the expression and clinical significance of miR-92a in cervical cancer, as well as the regulatory mechanism in the proliferation
of cervical cancer cells. Our data indicated that miR-92a was significantly upregulated in cervical cancer tissues compared to their matched adjacent nontumor tissues (ANTs), and the increased miR-92a levels were significantly associated with a higher grade, lymph node metastasis, and advanced
clinical stage in cervical cancer. In vitro study revealed that inhibition of miR-92a led to a significant reduction in the proliferation of HeLa cells via induction of cell cycle arrest at the G1 stage. In contrast, overexpression of miR-92a markedly promoted the proliferation
of HeLa cells by promoting cell cycle progression. Further investigation revealed that miR-92a has a negative effect on protein levels, but not the mRNA levels, of p21 in HeLa cells, suggesting that p21 is a direct target of miR-92a. Overexpression of p21 eliminated the promoting effects of
miR-92a on the proliferation and cell cycle progression of HeLa cells. However, knockdown of p21 reversed the suppressive effects of miR-92a downregulation on HeLa cell proliferation and cell cycle progression. Moreover, p21 was significantly downregulated in cervical cancer tissues compared
to ANTs, suggesting that the increased expression of miR-92a may contribute to the decreased expression of p21, which further promotes cervical cancer growth. In conclusion, our study demonstrates that miR-92a promotes the proliferation of cervical cancer cells via inhibiting p21 expression
and promoting cell cycle progression, highlighting the clinical significance of miR-92a in cervical cancer.
Photo-ignition process of multiwall carbon nanotubes and ferrocene by continuous wave Xe lamp illumination
Authors: Visconti Paolo , Primiceri Patrizio , Longo Daniele , Strafella Luciano , Carlucci Paolo , Lomascolo Mauro , Cretì Arianna , Mele Giuseppe
Published: January 2017

This work aims to investigate and characterize the photo-ignition phenomenon of MWCNT/ferrocene mixtures by using a continuous wave (CW) xenon (Xe) light source, in order to find the power ignition threshold by employing a different type of light source as was used in previous research (i.e., pulsed Xe lamp). The experimental photo-ignition tests were carried out by varying the weight ratio of the used mixtures, luminous power, and wavelength range of the incident Xe light by using selective optical filters. For a better explanation of the photo-induced ignition process, the absorption spectra of MWCNT/ferrocene mixtures and ferrocene only were obtained. The experimental results show that the luminous power (related to the entire spectrum of the Xe lamp) needed to trigger the ignition of MWCNT/ferrocene mixtures decreases with increasing metal nanoparticles content according to previously published results when using a different type of light source (i.e., pulsed vs CW Xe light source). Furthermore, less light power is required to trigger photo-ignition when moving towards the ultraviolet (UV) region. This is in agreement with the measured absorption spectra, which present higher absorption values in the UV–vis region for both MWCNT/ferrocene mixtures and ferrocene only diluted in toluene. Finally, a chemo-physical interpretation of the ignition phenomenon is proposed whereby ferrocene photo-excitation, due to photon absorption, produces ferrocene itself in its excited form and is thus capable of promoting electron transfer to MWCNTs. In this way, the resulting radical species, FeCp2+∙ and MWCNT−, easily react with oxygen giving rise to the ignition of MWCNT/ferrocene samples.
REPRODUCING THE CORRELATIONS OF TYPE C LOW-FREQUENCY QUASI-PERIODIC OSCILLATION PARAMETERS IN XTE J1550–564 WITH A SPIRAL STRUCTURE
Authors: Varniere Peggy , Vincent Frederic H.
Published: January 2017

While it has been observed that the parameters intrinsic to the type C low-frequency quasi-periodic oscillations are related in a nonlinear manner among themselves, there has been, up to now, no model to explain or reproduce how the frequency, the FWHM, and the rms amplitude of the type C low-frequency quasi-periodic oscillations behave with respect to one another. Here we are using a simple toy model representing the emission from a standard disk and a spiral such as that caused by the accretion–ejection instability to reproduce the overall observed behavior and shed some light on its origin. This allows us to prove the ability of such a spiral structure to be at the origin of flux modulation over more than an order of magnitude in frequency.
AN ALTERNATIVE TO THE ΛCDM MODEL: THE CASE OF SCALE INVARIANCE
Authors: Maeder Andre
Published: January 2017

The hypothesis is made that, at large scales where general relativity may be applied, empty space is scale invariant. This establishes a relation between the cosmological constant and the scale factor λ of the scale-invariant framework. This relation brings major simplifications in the scale-invariant equations for cosmology, which contain a new term, depending on the derivative of the scale factor, that opposes gravity and produces an accelerated expansion. The displacements due to the acceleration term make a high contribution

to the energy density of the universe, satisfying an equation of the form

. The models do not demand the existence of unknown particles. There is a family of flat models with different density parameters

. Numerical integrations of the cosmological equations for different values of the curvature and density parameter k and

are performed. The presence of even tiny amounts of matter in the universe tends to kill scale invariance. The point is that for

the effect is not yet completely killed. Models with non-zero density start explosively with a braking phase followed by a continuously accelerating expansion. Several observational properties are examined, in particular the distances, the m–z diagram, and the

versus

plot. Comparisons with observations are also performed for the Hubble constant H
0 versus

, for the expansion history in the plot

versus redshift z, and for the transition redshift from braking to acceleration. These first dynamical tests are satisfied by scale-invariant models, which thus deserve further study.
THE PLASMA DEPLETION LAYER BEYOND THE HELIOPAUSE: EVIDENCE, IMPLICATIONS, AND PREDICTIONS FOR VOYAGER 2 AND NEW HORIZONS
Authors: Cairns Iver H. , Fuselier S. A.
Published: January 2017

A plasma depletion layer (PDL) is predicted beyond the heliopause, analogous to the PDLs observed sunwards of planetary magnetopauses: draping of interstellar medium (ISM) magnetic field lines over the heliopause should increase the magnetic field strength and, perpendicular ion temperature, cause density depletions by allowing plasma ions (and electrons) with large parallel temperatures to escape along

, and increase the temperature anisotropy until limited by wave instabilities. Published Voyager 1 magnetometer and plasma wave data provide strong evidence for the coupled magnetic amplification (

) and density depletion (

) expected for a weak PDL. The predicted reduction in parallel temperature is

. The locations on the sky of the PDL and the points on the heliopause of maximum magnetic draping and total pressure are predicted using the ISM magnetic field direction obtained from the Interstellar Boundary Explorer (IBEX) ribbon. The IBEX ribbon overlies the former, as expected, while the latter lies within the ridge of maximum, non-ribbon, globally distributed flux. The PDL should be strongest along the ISM field line passing through these points and the Sun–ISM velocity vector. Based on their trajectories, Voyager 2 and New Horizons should observe a much stronger PDL (stronger magnetic amplification, density depletion, and changes in temperature) than Voyager 1. Finally, the reduced cosmic ray fluxes observed near 90° pitchangle by Voyager 1 beyond the heliopause appear qualitatively consistent with wave–particle interactions transferring perpendicular particle energy to parallel energy where the PDL is strong, followed by magnetic focusing as particles propagate into weaker magnetic field regions.
CHEMICAL EVOLUTION OF THE UNIVERSE AT 0.7 < z < 1.6 DERIVED FROM ABUNDANCE DIAGNOSTICS OF THE BROAD-LINE REGION OF QUASARS
Authors: Sameshima H. , Yoshii Y. , Kawara K.
Published: January 2017

We present an analysis of Mg ii
λ2798 and Fe ii UV emission lines for archival Sloan Digital Sky Survey (SDSS) quasars to explore the diagnostics of the magnesium-to-iron abundance ratio in a broad-line region cloud. Our sample consists of 17,432 quasars selected from the SDSS Data Release 7 with a redshift range of 0.72 < z < 1.63. A strong anticorrelation between the Mg ii equivalent width (EW) and the Eddington ratio is found, while only a weak positive correlation is found between the Fe ii EW and the Eddington ratio. To investigate the origin of these differing behaviors of Mg ii and Fe ii emission lines, we perform photoionization calculations using the Cloudy code, where constraints from recent reverberation mapping studies are considered. We find from calculations that (1) Mg ii and Fe ii emission lines are created at different regions in a photoionized cloud, and (2) their EW correlations with the Eddington ratio can be explained by just changing the cloud gas density. These results indicate that the Mg ii/Fe ii flux ratio, which has been used as a first-order proxy for the Mg/Fe abundance ratio in chemical evolution studies with quasar emission lines, depends largely on the cloud gas density. By correcting this density dependence, we propose new diagnostics of the Mg/Fe abundance ratio for a broad-line region cloud. In comparing the derived Mg/Fe abundance ratios with chemical evolution models, we suggest that α-enrichment by mass loss from metal-poor intermediate-mass stars occurred at z ∼ 2 or earlier.
A LOFAR DETECTION OF THE LOW-MASS YOUNG STAR T TAU AT 149 MHz
Authors: Coughlan Colm P. , Ainsworth Rachael E. , Eislöffel Jochen , Hoeft Matthias , Drabent Alexander , Scaife Anna M. M. , Ray Tom P. , Bell Martin E. , Broderick Jess W. , Corbel Stéphane , Grießmeier Jean-Mathias , van der Horst Alexander J. , van Leeuwen Joeri , Markoff Sera , Pietka Malgorzata , Stewart Adam J. , Wijers Ralph A. M. J. , Zarka Philippe
Published: January 2017

Radio observations of young stellar objects (YSOs) enable the study of ionized plasma outflows from young protostars via their free–free radiation. Previous studies of the low-mass young system T Tau have used radio observations to model the spectrum and estimate important physical properties of the associated ionized plasma (local electron density, ionized gas content, and emission measure). However, without an indication of the low-frequency turnover in the free–free spectrum, these properties remain difficult to constrain. This paper presents the detection of T Tau at 149 MHz with the Low Frequency Array (LOFAR)—the first time a YSO has been observed at such low frequencies. The recovered total flux indicates that the free–free spectrum may be turning over near 149 MHz. The spectral energy distribution is fitted and yields improved constraints on local electron density (

cm−3), ionized gas mass (

), and emission measure (

pc cm−6).
M32 Analogs? A Population of Massive Ultra-compact Dwarf and Compact Elliptical Galaxies in Intermediate-redshift Clusters
Authors: Zhang Yuanyuan , Bell Eric F.
Published: January 2017

We report the discovery of relatively massive, M32-like ultra compact dwarf (UCD) and compact elliptical (CE) galaxy candidates in

massive galaxy clusters imaged by the Cluster Lensing And Supernova survey with Hubble (CLASH) survey. Examining the nearly unresolved objects in the survey, we identify a sample of compact objects concentrated around the cluster central galaxies with colors similar to cluster red sequence galaxies. Their colors and magnitudes suggest stellar masses around

. More than half of these galaxies have half-light radii smaller than 200 pc, falling into the category of massive UCDs and CEs, with properties similar to M32. The properties are consistent with a tidal stripping origin, but we cannot rule out the possibility that they are early-formed compact objects trapped in massive dark matter halos. The 17 CLASH clusters studied in this work on average contain 2.7 of these objects in their central 0.3 Mpc and 0.6 in their central 50 kpc. Our study demonstrates the possibility of statistically characterizing UCDs/CEs with a large set of uniform imaging survey data.
Prevalence of Sofosbuvir Resistance-Associated Variants in Brazilian and Worldwide NS5B Sequences of Genotype-1 HCV
Authors: Peres-da-Silva Allan , Brandão-Mello Carlos Eduardo , Lampe Elisabeth
Published: January 2017

Background

The prevalence of natural polymorphisms associated with resistance to NS5B nucleoside/nucleotide (NI) sofosbuvir is distinct in different geographical regions. In Brazil, direct-acting anti-HCV therapy has recently changed with the introduction of interferon (IFN)-free regimens with sofosbuvir; however, the presence of resistant variants on clinical outcomes remains unknown. The aim of this study was to assess the natural polymorphisms associated with resistance to the NS5B NI sofosbuvir in Brazilian HCV-1 isolates and to compare it with that from other geographical regions.

Methods

Nucleotide sequencing of the HCV NS5B gene was performed in serum samples of 95 therapy-naive Brazilian patients infected with subtype 1a ( n=43) and 1b ( n=52). The sequences were analysed along with 1,525 NS5B sequences from North America, Europe and Asia retrieved from public HCV databases.

Results

In Brazilian HCV-1b patients who have never been exposed to a direct-acting anti-HCV drug, the C316N was detected in 15/52 (28.85%) patients, of these, 2 (3.85%) had single C316N variant, while 13 (25%) presented the double L159F-C316N mutant. A lower rate of L159F-C316N variants was detected in North American ( n=9/238; 3.78%, P<0.001), European ( n=17/281; 6.05%, P<0.001) and Asian ( n=2/173; 1.16%, P<0.001) isolates. No sofosbuvir resistance-associated variants (RAVs) were identified in HCV-1a sequences.

Conclusions

Resistant variants to sofosbuvir were found at different frequencies in worldwide HCV-1b sequences but not in HCV-1a sequences. The high frequency of double mutation L159F-C316N observed in Brazilian HCV-1b patients contrast with the lower rate observed in the three continents studied. The association of these findings and the clinical implications awaits further analysis.
Reproductive Change in Transitional Italy: More Insights from the Italian Fertility Survey of 1961
Authors: Breschi Marco , Esposito Massimo , Fornasin Alessio , Manfredini Matteo
Published: January 2017

Le rôle des variables intermédiaires de fécondité reste une question largement inexplorée au niveau micro en Italie. Cet article étudie les effets de l’éducation féminine et des critères socioéconomiques sur le déclin de la fécondité dans dix populations italiennes, par le biais d’une analyse des cohortes de mariages de la fin du xix e  siècle à 1951. Les données sont tirées de l’Enquête sur la Fécondité qui a été menée au sein du recensement italien de 1961, ce recensement fournissant des informations sur le parcours reproductif de toutes les femmes ayant été marié au sein de nos dix populations de référence. Le déclin de la fécondité a suivi des trajectoires assez diversifiées, et ce non seulement selon la dichotomie classique Nord/Sud, mais au sein même de chacune des régions. Le facteur socioéconomique le plus important qui a conduit à la chute de la fécondité fut l’éducation des femmes ; il apparaît comme plus crucial que le statut économique lorsqu’il s’agit de modeler les niveaux de fécondité. La chute de la fécondité a débuté parmi les femmes diplômées avant de s’enclencher parmi celles qui avaient fréquenté l’école primaire, puis d’atteindre les femmes n’ayant pas été à l’école. La réduction des différentiels de fécondité selon le niveau d’éducation féminine paraît cohérent avec le schéma explicatif de type innovation/diffusion pour comprendre la baisse de la fécondité.
Marital Fertility and Educational Assortative Mating before, during, and after the Baby Boom in Belgium
Authors: Nomes Eli , Van Bavel Jan
Published: January 2017

Au cours du xx e  siècle, l’élévation du niveau d’éducation des femmes et leur réintégration progressive sur le marché du travail ont modifié la dynamique de la nuptialité et de la fécondité. Après le baby-boom , la corrélation entre richesse ou statut social d’une part, et fécondité de l’autre, a été inversée. Au même moment, le niveau de scolarité est devenu un facteur déterminant de la fécondité. Dans cet article, nous étudions la relation entre l’homogamie éducative et la fécondité conjugale. Nous nous concentrons sur les tendances de la fécondité au cours du baby-boom et du baby-bust subséquent qui se sont révélées être liées aux évolutions des modèles de mariage. Plus particulièrement, nous étudions comment les évolutions du niveau et du calendrier de la fécondité conjugale peuvent être liés à l’évolution de la combinaison des niveaux de scolarité des deux époux. Nous adoptons une approche axée sur les couples et fondée sur les données rétrospectives du recensement belge qui fournissent de riches informations sur le niveau de scolarité et les antécédents matrimoniaux et de fécondité. Cela nous permet d’utiliser l’analyse des biographies pour analyser la fécondité des générations concernées. Les résultats montrent que les couples dont les deux partenaires sont peu éduqués ont les niveaux de fécondité les plus élevés pendant le baby-boom . Les couples hypergames (mari plus instruit que la femme) les suivant de peu, leur niveau de fécondité dépassant même le niveau des couples peu instruits pour certaines générations. Les couples homogames hautement éduqués ont, quant à eux, une fécondité légèrement inférieure à celle des couples hypergames. L’hypogamie (mari moins instruit que femme) est donc clairement associée à une baisse de la fécondité, et ce même pour les générations les plus jeunes. La prévalence croissante de l’hypogamie pendant le baby-bust pourrait ainsi être un facteur ayant contribué au déclin de la fécondité.
Quelle place dans les organisations pour les surdoués ?
Authors: Drillon Dominic , Botet-Pradeilles Georges
Published: January 2017

Les capacités intellectuelles de certains impressionnent leur entourage par une aisance à saisir les propriétés et les relations de façon « brillante », rapide et sans efforts manifestes. Leur quotient intellectuel, indiqué par les épreuves psychométriques dûment étalonnées, les place dans ce petit pourcentage liminaire de la population que l’on définit comme les « surdoués ». Cette différence est-elle un facteur de succès et une garantie d’adaptation professionnelle ? Au travers de ce que l’on sait de cas célèbres, d’interviews et de notre expérience clinique de la « douance » confrontée aux réalités scolaires et professionnelles nous allons dégager des voies de réponse à ces questions. Nous nous pencherons particulièrement sur la dynamique spécifique de la personnalité qui semble conduire à un surinvestissement des processus cognitifs. L’enracinement pulsionnel de l’intelligence nous semble un facteur créateur de potentiel par ce que la psychanalyse nomme la sublimation, mais il est également une source d’incertitudes, inducteur de déphasage avec le collectif et peut-être même de souffrance.
Apprendre avec son marché : une application au travers d’une co-conception orientée usage en milieu industriel
Authors: Briest-Breda Cathy N.
Published: January 2017

Cette recherche tente une application du cycle d’apprentissage du marché dans un contexte de digitalisation d’acteurs industriels. Afin d’explorer les mécanismes d’apprentissage vécus par les clients-testeurs, un croisement avec le cadre méthodologique de la co-conception orientée usage a pu être réalisé. Les résultats montrent que la transformation digitale vécue par les entreprises étudiées, se révèle être un support d’observation fertile de mécanismes d’apprentissage. Les acteurs apprennent respectivement des uns et des autres, mais également d’eux-mêmes. Le rôle de l’objet frontière est important dans un tel processus, en termes de création et d’appropriation de la valeur co-créée.
Moi inconscient, contre-transfert et « sens en latence »
Authors: Pirlot Gérard
Published: January 2017

L’auteur défend trois idées. Tout d’abord, le moi inconscient travaille via l’affect à faire lien intersubjectif entre contenant et formes alors que le préconscient-conscient se situe sur le jeu pulsion/défense concernant des contenus objectaux en particulier de la sexualité infantile refoulée. Puis, c’est dans le moi inconscient que l’analité primaire et sa fonction contenante pour la pensée – comme le cadre analytique –, transfère la fonction α de rêverie sur l’analité secondaire, mettant en relation contenants de pensée et contenus, ce travail de « trame » étant l’un des aspects du contre-transfert. Enfin, le moi inconscient est le lieu rendant possible une « latence de sens » ce dont rend compte l’attention flottante de l’analyste.
Du moi inconscient aux transpositions topiques
Authors: Matot Jean-Paul
Published: January 2017

À partir d’une discussion du cas de Julien K, envisagé sous l’angle d’une mobilisation des enveloppes psychiques du patient dans le travail analytique, l’auteur trace les grandes lignes d’une conception des processus de changement reposant sur la transformation des configurations psychiques. Celle-ci est rendue possible par l’activation ou la réactivation de transpositions topiques entre différents espaces psychiques, engageant des phénomènes transitionnels spécifiques à chaque transposition, dont la conjonction réalise un réseau transitionnel intermédiaire.
La langue du moi qui dort
Authors: Penot Bernard
Published: January 2017

Approuver l’idée que la langue primaire du rêve en images est celle du moi inconscient, et que coexistent constamment deux ordres de « langage » à l’œuvre dans le psychisme humain, n’implique pas pour autant de considérer ce langage primaire comme une formation idiosyncrasique qui ne serait pas fabriquée à partir des interactions avec l’objet premier, comme c’est le cas du registre verbal préconscient. Une vignette clinique peut montrer la réarticulation subjectivante d’un moi en défaut d’intégration de ses données primaires de symbolisation.
Sentiment de culpabilité et logiques du moi inconscient
Authors: Bourdin Dominique
Published: January 2017

Quelques notations sur l’économie psychique prégénitale du patient présenté par Dominique Cupa, Julien K. – notamment sur la culpabilité qui semble l’organiser – introduisent à des réflexions économiques et topiques sur la transformation de la force des motions pulsionnelles en représentations et en sens, et à des remarques épistémologiques sur une articulation entre les deux topiques freudiennes qui respecte leur hétérogénéité.
Moi inconscient et prise de conscience
Authors: de Coulon Nicolas
Published: January 2017

Le devenir conscient constitue une gageure dans les cures des problématiques non-névrotiques. Il est donc souhaitable de se référer à la deuxième métapsychologie freu-dienne et en particulier à l’instance du moi inconscient. Celui-ci est susceptible de fonctionner comme un véritable carrefour psychique, en cas de paralysie du pré¬conscient. Quelques-unes de ses caractéristiques et autres implications techniques sont brièvement indiquées au titre de mode d’emploi provisoire.
Le caractère, au carrefour du Moi inconscient et de l’inconscience du Moi
Authors: Delourmel Christian
Published: January 2017

Les passages à l’acte impulsifs, auto-agressifs ou hétéro-agressifs dans certaines organisations caractérielles invitent à différencier, d’une part, les traits de caractère qui s’affirment dans la période de latence qui suit le déclin de l’Œdipe, et qui résultent de for-mations réactionnelles contre la pulsion sadique-anale et, d’autre part, les traits de caractères qui s’édifieraient dès le début de la vie psychique en rapport avec la destructivité.
L’hallucinatoire en séance : une voie pour le devenir du moi inconscient
Authors: Falcão Luciane
Published: January 2017

Résumé – L’auteur présente une vignette clinique pour mener une réflexion sur la relation entre l’hallucinatoire en séance – selon la dynamique de la voie régrédiente – la mémoire pré-psychique, le langage en images du moi inconscient et la construction en analyse.
De la rencontre originaire : souffrance psychotique et travail de symbolisation du moi inconscient de l’analyste
Authors: Quagelli Luca
Published: January 2017

Prenant appui sur le matériel clinique issu de la rencontre avec un petit patient psy-chotique, l’auteur s’interroge sur le fonctionnement du moi inconscient de l’analyste lorsqu’il se retrouve face à la souffrance psychique la plus extrême et envahissante.
Des animateurs socioculturels dans une démarche de VAE : typologie des projets à l’œuvre
Authors: Redjimi Goucem
Published: January 2017

Les effets des profondes mutations sociales sur le champ de l’animation socioculturelle impliquent diverses recompositions qui concernent aussi bien le métier lui-même que la formation à l’animation. Ces dispositions se révèlent dans les discours, et plus généralement dans le champ de l’intervention sociale, par des exigences de professionnalisation. Les organisations de travail s’appuient sur la formation pour « fabriquer » des professionnels. Mais les nouveaux paradigmes éducatifs à l’œuvre, dont l’individualisation des parcours de formation, posent question. La VAE en fait partie. C’est donc en partant de la notion de projet, prise comme axe d’analyse, qu’a été dégagée la typologie présentée dans cet article. L’enquête menée auprès d’animateurs socioculturels montre que l’engagement dans une démarche de validation des acquis de l’expérience revêt des formes diverses selon les schémas représentationnels et les rapports à la formation des sujets enquêtés.
Agency, Learning and Identity in Women’s Life Trajectories
Authors: Evans Karen , Biasin Chiara
Published: January 2017

Sur la base d’une analyse longitudinale conduite par le National Child Development Study auprès de personnes nées au Royaume-Uni en 1958, l’étude Social Participation and Identity analyse en profondeur les histoires de vie d’une partie d’entre elles à l’âge de 50 ans. 222 entretiens ont ainsi été réalisés en Angleterre, en Écosse et au Pays de Galles. Plus spécifiquement, un échantillon de 110 femmes de 50 ans a été retenu, en focalisant l’attention sur les réponses à 5 des 31 questions prévues dans le cadre des entretiens. Les femmes ont ainsi été invitées à parler de leur histoire de vie, à donner une définition de soi, en racontant les événements-clé de leur existence. L’une de ces questions les invitait notamment à choisir une représentation visuelle de leur parcours de vie parmi 8 schémas, avec la possibilité pour elles d’esquisser également leur trajectoire de vie. L’article explore plus particulièrement les diagrammes du parcours de vie tracés par 31femmes n’ayant opté pour aucun des huit modèles suggérés. Ce choix est appréhendé comme une forme d’expression de soi, voire d’autodéfinition de son identité personnelle qui sollicite des formes d’agentivité et de responsabilité. Au final, l’article met l’accent sur 16 autoreprésentations de l’identité dans lesquelles l’agentivité et la capacité d’apprendre sont différemment affirmées.
El interés por el paisaje en la política turística española de la segunda mitad del siglo XX (1951-1978)
Authors: Brandis García Dolores
Published: January 2017

A partir de la segunda mitad de siglo XX y hasta la creación del Estado de las Autonomías la política turística aborda el conjunto del país como marco donde aplicar medidas para explotar los territorios con mejores recursos, entre ellos el paisaje, y conseguir aumentar la llegada de visitantes. A la vista de la acelerada agresión que sufren las áreas costeras y el desigual deterioro que manifiestan los paisajes del interior peninsular, se pasa a abordar en qué medida contribuyó a estos resultados la consideración y el tratamiento dado al paisaje por la política turística. El análisis se apoya en documentación oficial, bibliografía contemporánea y en la que desde la perspectiva actual aborda la política turística del periodo.
Cultura y paisaje en la política turística del primer franquismo (1939-1956)
Authors: Del Río Lafuente Isabel
Published: January 2017

El gobierno de Franco utilizó el turismo durante los primeros años de la Dictadura como instrumento de política cultural nacionalista y de propaganda para la legitimación del régimen. El texto, en el marco de una cultura nacional-católica de ideología falangista, analiza la política turística en sus diversas manifestaciones, cultural, de ocio, de vacaciones, religiosa, de naturaleza, de interior o de costa, puesta en práctica desde 1939 a 1956 y relaciona esta práctica turística con los territorios y los paisajes nacionales que se eligen para ser visitados por su adecuación a los intereses políticos del momento. El método utilizado deriva de la selección e interpretación de documentación del momento y de textos bibliográficos que analizan aspectos de la política, la cultura y el turismo de la etapa analizada.
Focus sur les expertises d'articles soumis, portant sur des dispositifs de formation médiatisée
Authors: Nissen Elke
Published: January 2017

Cet article présente l'analyse d'expertises effectuées par des membres de deux comités scientifiques dans le domaine de la didactique des langues et des Tice, et qui portent sur des soumissions d'articles relatifs à des dispositifs de formation médiatisée. Son objectif est d'identifier les difficultés principales que rencontrent les auteurs de ce type de recherche et de publication. Les points d'achoppement soulignés concernent, d'une part, des aspects rédactionnels, parmi lesquels l'équilibre entre la présentation du dispositif et la recherche, et l'"alignement" (notion empruntée à Biggs, 1996, Biggs & Tang 2011) – ou autrement dit la cohérence – du texte. D'autre part, les difficultés décelées relèvent d'aspects de recherche, tels que le positionnement de l'enseignant-chercheur ou la délimitation de la question de recherche.