bluuebunny/crossref_metadata_2025_split huggingface dataset:
Data Storing Proposal from Heterogeneous Systems into a Specialized Repository
Authors: Václavová Andrea , Tanuška Pavol , Jánošík Ján 
Published: April 2017

Abstract
The aim of this paper is to analyze and to propose an appropriate system for processing and simultaneously storing a vast volume of structured and unstructured data. The paper consists of three parts. The first part addresses the issue of structured and unstructured data. The second part provides the detailed analysis of data repositories and subsequent evaluation indicating which system would be for the given type and volume of data optimal. The third part focuses on the use of gathered information to transfer data to the proposed repository.
Design and Production of the Injection Mould with a Cax Assistance
Authors: Likavčan Lukáš , Frnčík Martin , Zaujec Rudolf , Satin Lukáš , Martinkovič Maroš 
Published: April 2017

Abstract
This paper is focused on the process of designing the desired plastic component and injection mould by using the 3D CAD systems. The subsequent FEM analysis of the injection mould process was carried out in order to define shrinkage and deformation of the plastic material by CAE system. The dimensions of the mould were then modified to compensate the shrinkage effect. Machining process (milling and the laser texturing) of the mould was performed by using CAM systems. Finally, after the production of the plastic components by the injection mould technology, the inspection of the plastic component dimensions was carried out by CAQ in order to define the accuracy of the whole CAx chain. It was also demonstrated that CAx systems are an integral part of pre-production and production process.
Impact of Viscosity on Filling the Injection Mould Cavity
Authors: Satin Lukáš , Bílik Jozef 
Published: April 2017

Abstract
The aim of this paper is to look closer at the rheological properties of plastics and their impact on technology in the plastics processing industry. The paper focuses on the influence of viscosity of the material on filling the mould cavity. Four materials were tested with the settings of process parameters with different viscosity. Using simulation software of Moldex3D, we can see the effect of change in viscosity in the material to be filled.
Four-Axis CNC Machine with Microcontroller for Cutting Polystyrene with Hot Wire
Authors: Silaghi Helga , Spoială Viorica , Caciora Simona Veronica Abrudan , Spoială D. 
Published: April 2017

Abstract
Numerically controlled machines require precise control, because it is always necessary to know the placement of the effector. Control involves the use of electric motors that can be checked with precision. Therefore stepper motors are preferred. A further advance in stepper control is to incorporate a reaction mechanism for the rotor (for example, an encoder) so as communication is optimal for generating the torque, depending on the position of the rotor. This turns the motor into a servo mechanism with very high torque and very good position resolution. An advance in this technique is to operate the motor in a closed loop only if the error of rotor positioning becomes too high. This will allow the system to avoid oscillation while searching for a position, a problem that commonly occurs with servos. The supervision of a numerically controlled tool is limited to the control of electric motors that actuate mechanical assemblies. Control can be implemented by using specialized integrated circuits or microcontrollers. This paper presents a numerically controlled (CNC) machine with microcontroller.
Estimation of long memory in volatility using wavelets
Authors: Kraicová Lucie , Baruník Jozef 
Published: April 2017

AbstractThis work studies wavelet-based Whittle estimator of the fractionally integrated exponential generalized autoregressive conditional heteroscedasticity (FIEGARCH) model often used for modeling long memory in volatility of financial assets. The newly proposed estimator approximates the spectral density using wavelet transform, which makes it more robust to certain types of irregularities in data. Based on an extensive Monte Carlo study, both behavior of the proposed estimator and its relative performance with respect to traditional estimators are assessed. In addition, we study properties of the estimators in presence of jumps, which brings interesting discussion. We find that wavelet-based estimator may become an attractive robust and fast alternative to the traditional methods of estimation. In particular, a localized version of our estimator becomes attractive in small samples.
The Difference Between Countermovement and Squat Jump Performances: A Review of Underlying Mechanisms With Practical Applications
Authors: Van Hooren Bas , Zolotarjova Julia 
Published: April 2017

Abstract
Van Hooren, B and Zolotarjova, J. The difference between countermovement and squat jump performances: a review of underlying mechanisms with practical applications. J Strength Cond Res 31(7): 2011–2020, 2017—Two movements that are widely used to monitor athletic performance are the countermovement jump (CMJ) and squat jump (SJ). Countermovement jump performance is almost always better than SJ performance, and the difference in performance is thought to reflect an effective utilization of the stretch-shortening cycle. However, the mechanisms responsible for the performance-enhancing effect of the stretch-shortening cycle are frequently undefined. Uncovering and understanding these mechanisms is essential to make an inference regarding the difference between the jumps. Therefore, we will review the potential mechanisms that explain the better performance in a CMJ as compared with a SJ. It is concluded that the difference in performance may primarily be related to the greater uptake of muscle slack and the buildup of stimulation during the countermovement in a CMJ. Elastic energy may also have a small contribution to an enhanced CMJ performance. Therefore, a larger difference between the jumps is not necessarily a better indicator of high-intensity sports performance. Although a larger difference may reflect the utilization of elastic energy in a small-amplitude CMJ as a result of a well-developed capability to co-activate muscles and quickly build up stimulation, a larger difference may also reflect a poor capability to reduce the degree of muscle slack and build up stimulation in the SJ. Because the capability to reduce the degree of muscle slack and quickly build up stimulation in the SJ may be especially important to high-intensity sports performance, training protocols might concentrate on attaining a smaller difference between the jumps.
Domain Selectivity in the Parahippocampal Gyrus Is Predicted by the Same Structural Connectivity Patterns in Blind and Sighted Individuals
Authors: Wang Xiaoying , He Chenxi , Peelen Marius V. , Zhong Suyu , Gong Gaolang , Caramazza Alfonso , Bi Yanchao 
Published: April 2017

Human ventral occipital temporal cortex contains clusters of neurons that show domain-preferring responses during visual perception. Recent studies have reported that some of these clusters show surprisingly similar domain selectivity in congenitally blind participants performing nonvisual tasks. An important open question is whether these functional similarities are driven by similar innate connections in blind and sighted groups. Here we addressed this question focusing on the parahippocampal gyrus (PHG), a region that is selective for large objects and scenes. Based on the assumption that patterns of long-range connectivity shape local computation, we examined whether domain selectivity in PHG is driven by similar structural connectivity patterns in the two populations. Multiple regression models were built to predict the selectivity of PHG voxels for large human-made objects from white matter (WM) connectivity patterns in both groups. These models were then tested using independent data from participants with similar visual experience (two sighted groups) and using data from participants with different visual experience (blind and sighted groups). Strikingly, the WM-based predictions between blind and sighted groups were as successful as predictions between two independent sighted groups. That is, the functional selectivity for large objects of a PHG voxel in a blind participant could be accurately predicted by its WM pattern using the connection-to-function model built from the sighted group data, and vice versa. Regions that significantly predicted PHG selectivity were located in temporal and frontal cortices in both sighted and blind populations. These results show that the large-scale network driving domain selectivity in PHG is independent of vision.SIGNIFICANCE STATEMENTRecent studies have reported intriguingly similar domain selectivity in sighted and congenitally blind individuals in regions within the ventral visual cortex. To examine whether these similarities originate from similar innate connectional roots, we investigated whether the domain selectivity in one population could be predicted by the structural connectivity pattern of the other. We found that the selectivity for large objects of a PHG voxel in a blind participant could be predicted by its structural connectivity pattern using the connection-to-function model built from the sighted group data, and vice versa. These results reveal that the structural connectivity underlying domain selectivity in the PHG is independent of visual experience, providing evidence for nonvisual representations in this region.
Novel germline variant of TMEM127 gene in a patient with familial pheochromocytoma
Authors: Saitoh Kohei , Yonemoto Takako , Usui Takeshi , Takekoshi Kazuhiro , Suzuki Makoto , Nakashima Yoshiharu , Yoshimura Koji , Kosugi Rieko , Ogawa Tatsuo , Inoue Tatsuhide 
Published: April 2017

Summary
Pheochromocytomas (PCCs) and paragangliomas (PGLs) are rare tumours with a heterogeneous genetic background. Up to 40% of apparently sporadic PCC/PGL cases carry 1 of the 12 gene germline mutations conferring genetic susceptibility to PCC/PGL. Although the precise mechanisms are unclear, TMEM127 is one of the rare responsible genes for PCC/PGL. Here we report the case of a patient with familial PCC having a novel TMEM127 variant (c.119C > T, p.S40F). In silico prediction analysis to evaluate the functional significance of this variant suggested that it is a disease-causing variant. A PCC on the left side was considered to be the dominant lesion, and unilateral adrenalectomy was performed. The histopathologic findings were consistent with benign PCC. A loss of heterogeneity of the TMEM127 variant was detected in the surgically removed tumour.

Learning points:

c.119C > T (p.S40F) is a novel TMEM127 variant that can cause pheochromocytoma.

The tumour showed loss of heterozygosity of this TMEM127 variant.

The clinical phenotype of this mutation is putative bilateral pheochromocytoma in the 4th decade.

Unilateral adrenalectomy may be performed as the initial surgery in such cases.
EL NUEVO CONTEXTO DE LAS CAMPAÑAS ELECTORALES: EL CASO DEL APP MIVOTOHOY
Authors: Carazo Barrantes Carolina 
Published: April 2017

Este artículo analiza el caso de una aplicación (MiVotoHoy) propuesta al Tribunal Supremo de Elecciones (TSE) de Costa Rica para la campaña presidencial de febrero 2014 y que el TSE no autorizó. En el artículo se discute el nuevo contexto en el que hoy en día se desarrollan las campañas electorales, uno en el que las encuestas enfrentan cada vez más limitaciones para seguir cumpliendo su función de predicción en periodos electorales; al tiempo que las tecnologías de la información y la comunicación han puesto sobre la palestra temas como la conectividad móvil, el empoderamiento ciudadano y la participación política de jóvenes a través de “apps”, entre otros aspectos.
Molecularly Imprinted Materials: Towards the Next Generation
Authors: Ye Lei , Mosbach Klaus , Spivak David A. , Sibrian-Vazquez Martha 
Published: April 2017

AbstractThis brief overview summarizes some recent developments from our Center for Molecular Imprinting related to the topic of this symposium. After a short presentation of the principle of molecular imprinting and recognition, the use of different materials including hybrids for the formation of the host will be discussed, followed by examples given of different formats used such as small polymer beads. In closing, potential directions for the next generation of molecular imprinting technology will be discussed.
Molecularly Imprinted Polymers Used as Optical Waveguides for the Detection of Fluorescent Analytes
Authors: Brazier Jennifer J. , Yan Mingdi , Prahl Scott , Chen Yin-Chu 
Published: April 2017

AbstractThis article demonstrates the novel approach of fabricating molecularly imprinted polymers (MIPs) as fiber optic waveguides for the detection of fluorescent analytes. Combining a polyurethane system and the soft lithography technique of micromolding in capillaries (MIMIC), polymer waveguides of 50 νm and 100 νm dimensions were patterned onto a silicon substrate. Laser coupling into small waveguide segments has been verified visually. Binding experiments using the waveguides are currently being explored. Some preliminary binding studies have been performed, however, for smaller, freestanding filaments of sizes consistent with conventionally prepared MIP particles. Using fluorimetry measurements, templated fibers of 20 νm dimension preferentially bound the analyte molecules by a factor of 1.5 as compared to control polymers.
Photochemical Enzyme Co-Factor Regeneration: Towards Continuous Glutamate Monitoring with a Sol-Gel Optical Biosensor
Authors: Rickus Jenna L. , Tobin Allan J. , Zink Jeffrey I. , Dunn Bruce 
Published: April 2017

AbstractSol-gel encapsulation has recently surfaced as a successful approach to biomolecule immobilization. Proteins, including enzymes, are trapped in the pores of the sol-gel derived glass while retaining their spectroscopic properties and biological activity. Our current work extends the unique capabilities of biomolecule-doped sol-gel materials to the detection of glutamate, the major excitatory neurotransmitter in the central nervous system. We are developing an in vivo fiber optic biosensor for glutamate along with methods to achieve continuous monitoring. In our research to date we have encapsulated GDH in a silica sol-gel film on the tip of an optical fiber. GDH catalyzes the oxidative deamination of glutamate to α-ketoglutarate and the simultaneous reduction of NAD+ to NADH. To quantify the glutamate concentration, we observe the rate of change of NADH fluorescence as a function of time. An important consideration for continuous in vivo monitoring is the incorporation of a selfsustaining NAD+ source. We have adopted a photochemical means of regenerating NAD+ from NADH, by irradiating thionine (3,7-diaminophenothiazin-5-ium) which we incorporate into the sol-gel sensor material. When excited with visible light (λabc∼ 596 nm), thionine undergoes a reaction with NADH resulting in a non-fluorescent form of thionine and NAD+. We have characterized the kinetics of this reaction in the sol-gel matrix, and have shown that the reaction results in regenerated co-factor that is usable by GDH for the oxidation of glutamate.
A Novel Latching Relay Fabricated Using an Oxide Molded Tungsten Process
Authors: Fleming J.G. , Baker Michael , Luck David 
Published: April 2017

AbstractIn this paper we describe an oxide molded tungsten process applied to the fabrication of a novel latching relay. The steps in the process are: deposition of a sacrificial oxide, patterning of the oxide, filling of the resulting mold with a blanket film of tungsten using chemical vapor deposition (CVD), and then the removal and planarization of excess tungsten through chemical mechanical polishing (CMP). The process for the incorporation of dielectric isolation has also been developed. The resulting tungsten structures are under high tensile stress, which appears to be compensated in process by the compressive stress of the oxide mold. All the steps are low temperature and the entire process is backend CMOS compatible. This process has been used to fabricate a latching relay which relies on the internal stress of the tungsten and always generates force in a pulling mode. Parts have been successfully fabricated and tested, the devices generate very high forces for a MEMS device and give reasonable contact resistances even without noble metal contacts.
Investigation of Electric Characteristics of Nanoscale Composite A1B5C6 Semiconductors: Experiment and Numerical Simulation
Authors: Khlyap H. , Bilozertseva V. , Panchenko L. , Shkumbatiuk P. , Andrukhiv M. 
Published: April 2017

AbstractComposite semiconductors belonging to the group A1B5C6(Ag3SbS3, Tl3SbS3, Ag3AsS3 and others) are seemed to be among the most promising materials for manufacturing detectors of ionizing radiations (γ-Ray Detectors Based on Composite A1B5C6 Semiconductors, H. Khlyap et al., MRS Proceed. 792 (2004, R3.4.1). Electric properties of these wide-gap semiconductors are almost not studied. The paper reports first experimental results on electric field-induced effects observed in these nanoscaled semiconductor structures under the room temperature. Bulk materials as well as thin films were studied. The experimental data were analyzed according to the semiclassical theory of tunneling in solids.
Significance of Surface Topography on Performance and Lifetime of MEMS Switches and Relays
Authors: Kogut Lior , Komvopoulos Kyriakos 
Published: April 2017

AbstractSwitches and relays that have emerged from the microelectromechanical systems (MEMS) technology have the potential to replace traditional solid-state devices due to broader operating temperature range, higher breakdown voltage, and much higher off-state resistance. Interest in MEMS switches and relays has surged recently, principally due to the demonstrated performance in switching radio-frequency signals. However, understanding of the effect of the surface topography on performance and lifetime of these microdevices is rather empirical. Therefore, the objective of this study was to explore the role of surface topography in various physical phenomena encountered at contact interfaces of MEMS switches and relays. Emphasis is given on the dependence of pull-in voltage, electric field, and electrical breakdown on surface topography and interpretation of contact interface phenomena associated with surface erosion and adhesion in the context of surface topography effects. In addition, current obstacles in the study of the influence of the surface topography on the performance of MEMS switches and relays are discussed in light of recent findings.
Chirality Characterization of Dispersed Single Wall Carbon Nanotubes
Authors: Namkung Min , Williams Phillip A. , Mayweather Candis D. , Wincheski Buzz , Park Cheol , Namkung Juock S. 
Published: April 2017

AbstractRaman scattering and optical absorption spectroscopy are used for the chirality characterization of HiPco single wall carbon nanotubes (SWNTs) dispersed in aqueous solution with the surfactant sodium dodecylbenzene sulfonate. Radial breathing mode (RBM) Raman peaks for semiconducting and metallic SWNTs are identified by directly comparing the Raman spectra with the Kataura plot. The SWNT diameters are calculated from these resonant peak positions. Next, a list of (n, m) pairs, yielding the SWNT diameters within a few percent of that obtained from each resonant peak position, is established. The interband transition energies for the list of SWNT (n, m) pairs are calculated based on the tight binding energy expression for each list of the (n, m) pairs, and the pairs yielding the closest values to the corresponding experimental optical absorption peaks are selected. The results reveal (1, 11), (4, 11), (5, 12), and (5, 9) among the most probable chiralities for the semiconducting nanotubes. The results also reveal that (4, 16), (6, 12) and (8, 8) are the most probable chiralities for the metallic nanotubes. Directly relating the Raman scattering data to the optical absorption spectra, the present method is considered the simplest technique currently available. Another advantage of this technique is the use of the, E11S, E33S, and E22M peaks in the optical absorption spectrum in the analysis to enhance the accuracy in the results.
Zinc Powder Evaporation: an Efficient Way of Synthesizing a Wide Range of High-quality ZnO Nanostructures at Lower Temperature
Authors: Zhang Yue , He Jian , Huang Yunhua , Gu Yousong , Ji Zhen , Zhou Cheng 
Published: April 2017

AbstractWe developed an efficient method in achieving a wide range of high-quality ZnO nanostructures by zinc powder evaporation at lower temperature. The synthesis under specific conditions of ZnO nanostructures, such as comb-like structures, well-aligned nanorods, nanonails and core-shell ZnO/SiOx nanowires, were introduced in detailed respectively in this letter. Meanwhile, SEM, TEM, HRTEM and EDX investigations were performed on the products and revealed the crystal structure and the growth mechanism. These high-quality nanostructures enriched the family of ZnO nanomaterials and may have potential applications in optoelectronics, sensors and nanoscale mechanics research.
Spontaneous Growth of Nickel Silicide Nanowires and Formation of Self-Assembled Nanobridges by the Metal Induced Growth Method
Authors: Kim Joondong , Anderson Wayne A. , Song Young-Joo 
Published: April 2017

AbstractNickel monosilicide (NiSi) nanowires (NWs) have been fabricated by the metal induced growth (MIG) method. Ni as a catalyst was deposited on a SiO2 coated Si wafer. In a DC magnetron sputtering system, the Ni reacts at 575°C with sputtered Si to give nanowires. Different metal catalysts (Co and Pd) were used to prove the MIG NW growth mechanism. NiSi NWs were a single crystal structure, 20-80 nm in diameter and 1-10 μm in length. The linear NW growth property provided nanobridge formation in a trenched Si wafer. The trenches in a Si wafer were made by dry etching and a simple, conventional metal lift off method. The self-assembled nanobridge can be applied to form nanocontacts at relatively low temperatures. The MIG NB is a promising 1 dimensional nanoscale building block to satisfy the need of ‘self and direct’ assembled ‘bottom-up’ fabrication concepts.
Fine-Tuning of the Spectral Collection Efficiency in a Multilayer Junction Through the LSP Technique
Authors: Fernandes M. , Fantoni A. , Niehus M. , Louro P. , Lavareda G. , Carvalho C. N. , Vieira M. 
Published: April 2017

AbstractWe report in this paper the recent advances we obtained in optimizing a color image sensor based on the LSP technique. A device structure based on a a-SiC:H/ a-Si:H pin/pin tandem structure has been tested for a proper color separation process that takes advantage on the different filtering properties due to the different light penetration depth at different wavelengths inside the a-Si:H and a-SiC:H absorbers. Under reverse bias the green and the red images give, in comparison with previous tested structures, a weak response, while this structure shows a very good recognition of blue color, leaving a good margin for future device optimization in order to achieve a complete and satisfactory RGB image mapping. The physics behind the device functioning is explained by recurring to a numerical simulation of the internal electrical configuration of the device in dark and under different wavelength irradiations. Considerations about conduction band offsets, electrical field profiles and inversion layers will be taken into account to explain the optical and voltage bias dependence of collected photocurrent.