bluuebunny/crossref_metadata_2025 huggingface dataset:
3D Indoor Positioning System Based on MEMS Sensors
Authors: Zhu Jin Lin , Mo Bing , Ling Chao Dong , Fu Wen Yuan
Published: May 2015

Nowadays, most of scholar study the 2D indoor positioning system based inertial sensors. But in some case, the information of 3D space about person is very important, such as mine accident, fire rescue, and so on. In this paper, we focus on designing and implementing a 3D indoor positioning system based on MEMS sensors and barometer sensor. The MEMS sensors including a three-axis accelerometer, a three-axis gyroscope, and a three-axis magnetometer is used for acquiring information of human movement. Barometer sensor is used to measure the height of the person where he is. Then the collected raw data is sent to a PC by a MCU wirelessly. Thus the performance of the 3D indoor positioning system is optimized by moving data post processing to a PC. In a 3D indoor positioning system, the integral drift and the heading drift are the main sources of the errors. Therefore, a method which is the combination of the zero velocity updates and the sensor data fusion based on an extended Kalman filter is proposed. Further improvement on the accuracy of positioning can be achieved by removing the static biases. A novel method including compensating the sensor biases based on experiment is presented. These methods have been carefully investigated through theoretical study and simulation. The simulation results indicate 3D indoor positioning is achievable through the application of the presented methods.
Effects of Hall Output Probes Shape on Magnetic Characterization of Hall Magnetic Field Sensor Based on MOSFET
Authors: Zhao Xiao Feng , Lin Qian Ru , Mu Ai Lin , Wen Dian Zhong , Zhang Hong Quan
Published: May 2015

This paper presents the effects of Hall output probes shape on the magnetic characteristic of magnetic field sensors with Hall output probes, which is based on metal-oxide-semiconductor field effect transistor (MOSFET). The Hall sensor chips are fabricated on <100> silicon substrates with high resistivity by using CMOS technology. Experiment results show that, when drain-source voltage VDS=5.0 V, the magnetic sensitivity of the magnetic field sensor with the concave Hall output probes and channel length-width ratios of 160 μm/80 μm, 320 μm/80 μm and 480 μm/80 μm are 53.3 mV/T, 32.54 mV/T and 20.32 mV/T, respectively. At the same condition, the magnetic sensitivity of the magnetic field sensor with convex Hall output probes and the channel length-width ratio of 160 μm/80 μm is 76.8 mV/T.
Noise Analysis of Silicon Microgyroscope's Transimpedance Amplifier Interface Circuit
Authors: Tang Wei Feng , Qiu An Ping , Xia Guo Ming , Su Yan
Published: May 2015

The output-current of silicon microgyroscope is at the level of 10-7A. So the requirements for circuits’ SNR are very high. This paper proposes a method to improve transimpedance amplifier interface circuit’s SNR. First of all, the operating principles of silicon microgyroscope and transimpedance amplifier interface circuit are introduced. Secondly, resistor thermal noise, amplifier’s current and voltage noise are analyzed. Then noise density in a certain frequency range is calculated based on Matlab. Besides, a method to improve SNR is proposed, namely, increasing the value of DC offset resistance. Finally, simulation based on Cadence is operated to verify the method. Simulation results fit well with the theoretical analysis. That means the method to improve the SNR is feasible.
A Modulated Feedback Approach to Improve Closed Loop MEMS Accelerometer Bias Instability
Authors: Ma Ming Jun , Jin Zhong He , Liu Yi Dong
Published: May 2015

Bias instability serves as one important performance specification for MEMS accelerometer. The bias instability is affected by 1/f noise. Conventional operation adopts the correlated double sampling (CDS) to reduce the 1/f noise, but is only feasible with switch capacitors. The paper proposes a novel and universal modulated feedback approach to improve the bias instability of closed loop MEMS capacitive accelerometer. The modulated feedback method is utilized to isolate the 1/f noise the electronic interface brings to the system. The comparison experiments are set up and the Allan Variance show significant improvement for the bias instability. We achieve the bias instability around 8μg after applying modulated feedback approach, making the closed loop MEMS accelerometer being able to enter high precision inertial sensor level.
A Feed-Forward Sigma-Delta Modulator Applied in Silicon Gyroscope
Authors: Shao Qi , Lv Qiu Ye , Meng Hao , Fu Qiang , Liu Xiao Wei
Published: May 2015

Aiming to be applied in silicon gyroscope, a three-order single loop feedforward modulator with three-bit quantizer and local feedback is designed in this paper. Signal band is 200 KHz, sampling rate is 25.6 MHz, OSR is 64. Ideal modulator is then designed and simulated in MATLAB, getting SNR 125dB. Non-ideal factors are also added to ideal model, DWA technology is adopted to restrain the nonlinearity of multi-bit quantizer, getting SNR 104dB. Finally, transistor-level full-difference modulator is designed and simulated in Cadence, fetting SNR 101.3dB.
A Novel Capacitive Temperature Sensor for Real-Time Monitoring of Temperature in the Silicone Oil Fan Clutch
Authors: Ren Qing Ying , Wang Li Feng , Huang Jian Qiu , Huang Qing An
Published: May 2015

This paper presents a novel capacitive sensor for real-time monitoring of temperature in the silicone oil fan clutch. The structure of the temperature sensor is designed and fabricated by the Silicon-On-Glass (SOG) process based on the bonding technology. The silicone oil is designed as the temperature sensing materials in the capacitive sensor. The capacitance of the embedded sensor is changing with respect to temperature of the silicone oil fan clutch. Experimental results show that the sensor provides a sensitivity of 27.3fF/°C in the -30 to 40°C range, 58.2fF/°C in the 50 to 110°C rang. It is also demonstrated that the temperature sensitive capacitor can be integrated with a copper inductance antenna and tests as a passive wireless temperature sensor. The resonant frequency of the inductor-capacitor (LC) resonator changes with respect to the changing capacitance. Then temperature changes can be remotely determined towards a frequency spectrum study. Experimental results show that the LC type passive wireless sensor provides a sensitivity of 6.35kHz/°C in the -30 to 110°C range.
A Novel Microfluidic Time Gate for Controlling Flow of Liquids
Authors: Gan Lu , Liu Chong , Li Jing Min , Ma Ya Hui , Zhou Li Jie , Zhang Hao , Li Tao , Wang Lei
Published: May 2015

Microfluidic time gates are applied to control accurate flow time of liquids in the autonomous capillary systems, which are critical structures for point-of-care diagnostic and analytical applications. The time gate employs several abruptly changing geometry of the flow path to change the wettability of micro-channels to meet the requirement of delaying flow. However, obtaining desirable flow of liquids in microfluidics is still a limiting factor in the practical implementation. The work demonstrates a novel 2D serial cross-channel time gate and 3D serial cross-channel time gate. They are fabricated in PDMS-based autonomous capillary system. 2D serial cross-channel time gate is comprised of multiple paralleled channels of changeable width with dimensions from 300-800μm. The number of the channels and the width variation of the cross intersections are crucial factors to influence the flow velocity of liquids. Compared with the 2D serial cross-channel time gate, the 3-D structures can eliminate the problem of entrapping air and improve the flow velocity of liquids in the time gate. The controlling time of the flow in 3D serial cross-channel time gate and 2D serial cross-channel time gate are 9~13s and 5s~51s, respectively.
Applied Research on Self-Sensing Micro-Flow Injection Device Based on Piezoelectric Ceramics
Authors: Huang Jie , Shi Li Ping , Zhou Hai Min , Wei Xi Wen , Wei Yan Bo
Published: May 2015

Experimental research of first inverse, secondary positive piezoelectric effects are performed through the PZT-5 piezoelectric ceramics. Introduce a concept of self-sensing micro-flow injection device based on piezoelectric ceramics. Utilized the characteristic of the first inverse piezoelectric effect which can generate micro-displacement, micro-position and then micro-injection can be realized by the micro-change of piezoelectric ceramic’s volume. Self-sensing displacement in micro-injection process can be obtained by utilizing the secondary direct piezoelectric effect. The experimental data: if the external voltages which were applied to the stack are 20V and 40V, the theoretical displacement generated by the first inverse piezoelectric effect are 4μm and 8μm respectively, the actual measured values are 3.57μm and 8.12μm respectively, self-sensing displacement of secondary direct piezoelectric effect are 1.48μm and 2.53μm respectively. It proves that the theoretical and experimental device could sense the displacement of micro-injection and the integration of sensor and actuator can be achieved.
Adsorption of Silver Nanoparticles on Modified Surfaces
Authors: Gao Can , Guo Tan , Ye Xiu Shen , Zhang Hui Fang , Liu Hai Ning , Wu Zhi Jian
Published: May 2015

Uniform films of silver nanoparticles (Ag NPs) were fabricated by self-assembly on 3-aminopropyltriethoxysilane (APTES) and [3-(2-aminoethyl) aminopropyl] trimethoxysilane (AEAPTES) modified glass slides. A stable Ag NPs suspension was synthesized via the reduction of silver nitrate using sodium citrate. Bulk characteristics of Ag NPs in aqueous solution were carried out by measuring their absorption spectrum, morphology and particle shape using the UV-vis absorption spectroscopy and transmission electron microscopy (TEM), respectively. The average diameter of Ag NPs is about 50 nm. The coverage of adsorbed particles on the modified glasses was measured by scanning electron microscopic imaging (SEM). The SEM images indicate that the Ag NPs films on the glasses are uniform. It is supposed that the adsorption processes are mainly controlled by electrostatic interactions. The adsorption amount of Ag NPs on APTES modified glass slides is much more than the amount on AEAPTES modified glass slides.
Iron Wear Particle Content Measurements in Process Liquids Using Micro Channel – Inductive Method
Authors: Bo Zhao , Zhang Xing Ming , Zhang Hong Peng , Liu En Chen , Chen Hai Quan
Published: May 2015

A detection chip is designed and manufactured to study the relationship between iron wear particle content in hydraulic oil and the detected variation of average inductance, which detects content of iron wear particle by means of micro channel - inductive. Through experiments, we obtained inductive values in the cases. The case is that the sizes of iron wear particle are the same, while the content of iron wear particle are different. Thus the curve between content of iron wear particle content and variation of average inductance was drawn. Experimental results show that the inductance value increases with the increase of the iron wear particle content in hydraulic oil. Experiments prove that the way is feasible for the detection of iron wear particle content in hydraulic oil. This study has an important significance for the realization of iron wear particle content detection in hydraulic oil.
Design and Fabrication of a SOI Optical Waveguide Sensing Platform for Biochemical Sensor Application
Authors: Liu Yu Jin , Dong Ying , Yuan Deng Peng , Li Tian Jian
Published: May 2015

A micro biochemical sensor based on a SOI optical waveguide sensing platform is reported in this article. The sensing platform utilizes a Mach-Zehnder Interferometer (MZI) configuration. In order to satisfy the single-mode transmission condition of the waveguide and match the coupling size of standard single-mode fiber, a ridge waveguide structure is adopted to construct the MZI configuration. The key parameters of the waveguide are optimized by FDTD method. A process composed of contact exposure photolithography and Inductively Coupled Plasma (ICP) etching technology has been worked out for the fabrication of the optical waveguide sensing platform on SOI wafer. In the process, only one photolithographic mask is used. The mask is designed to have several patterns including an array of MZI configurations for multiple species sensing, a group of ridge waveguides with different key parameters as test references, and a group of geometric compensation schemes to test the methods of modifying the deviation which may arise during the ICP etching step. Process simulations are conducted to predict the exposure and etching results, which give strong support to the fabrication process control. Lithography problems including photoresist desquamation and line narrowing are solved to achieve the special structure.
The Research on Electroplating Technology Used for RF Micro Inductor Coil
Authors: Bi Rui Ke , Wei Xiu Yan , Wu Jing Lin , Guo Hang
Published: May 2015

In this paper, we focus on the electroplating technology used for RF micro inductor coil. The technological parameters in DC electroplating are determined by SEM, linear sweep voltammetry and so on. It turns out that a high quality of plating layer is obtained when the PH value of electrochemical solution is 9, temperature is 45°C,current density is 1 A/dm2, additive is added and stirred slowly. Then the research on pulse electroplating is conducted on the basis of DC electroplating, and the result indicates that the pulse plating layer is of better quality compared with DC plating layer. Afterwards, surface structure and resistance of the copper layer are analyzed, demonstrating the obtained coating layer is good enough to be the main structure of micro inductor coil. In the end, this electroplating technology is applied to micro inductor coil. The simulation, fabrication, package and test of micro inductor coil are introduced briefly.
Micro-Spring’s Variable Stiffness Design and Characteristics Analysis
Authors: Liu Guo Hua , Sui Li , Shi Geng Chen , Guo Xu Hong
Published: May 2015

The variable stiffness micro-springs’ load and deformation have nonlinear relationship, thus they can be used in special occasions. MEMS processing technology can manufacture any complex structures in a plane, using this feature, a variable stiffness design idea for the planar micro-spring is proposed. That is, using one type of structure named contact pairs to achieve stiffness change during the micro-spring’s stretching process. Using contact pairs, two types of variable stiffness springs are designed: stiffness increase spring and stiffness convexity spring. Because of the influence of processing precision, the contact pairs’ sizes of the first type of variable stiffness spring are different each other, the machining error makes the test results and simulation results various. In order to avoid the above problem of above spring, this paper designs another two variable stiffness micro-springs, test results indicate that the improved variable stiffness springs can realize the variable stiffness’ tendency.
UVC-Thermal Coupled Digestion without Oxidant for the Detection of Total Phosphorus
Authors: Li Long , Bian Chao , Tong Jian Hua , Li Heng , Xia Shan Hong
Published: May 2015

In this paper, a catalyst-free and non-oxidant digestion method based on UVC and thermal coupled mechanism was developed for the digestion of total phosphorus (TP). Two kinds of digestion devices, “hamburg-type” and “screw-type”, were designed and compared to get higher digestion efficiency. Both of the two devices contain a quartz tube, UV light tubes, a flexible heating unit, UV light reflecting layer, and a temperature meter, etc. UVC light with the wavelength of 254nm is used to produce hydroxyl radicals to degrade TP into phosphate in water. Compared with the “hamburg-type” digestion device, the “screw-type” device exhibited a higher digestion rate. At the condition of 1 hour and 80°C, the digestion rate of 1mg/L (by weight of P) water sample can come to 96% by using the “screw-type” device.
Fabrication of SU-8 Microneedle Based on Backside Exposure Technology
Authors: Du Li Qun , Wang Zhong Zhou , Ruan Xiao Peng , Chen Sheng Li , Shan Qing
Published: May 2015

An optimization method for fabricating 3D microneedle arrays with larger cone angles through backside exposure is demonstrated in this paper. A photo mask was designed to fabricate SU-8 microneedle based on diffraction of UV light. A circular hole diffraction was simulated with Matlab to obtain light intensity distribution. The simulation results show that the cone angles and surface profile can be adjusted by changing the thickness of substrate and exposure dose. Based on the simulation results, the microneedles with heights of 265 μm to 380 μm and cone angles in the range of 5.1° to 15.6° were fabricated by the backside exposure technology through one time UV lithography. Compared with previous approaches, the fabrication process in this paper takes advantages of simple, low cost and mass production.
Analysis on the Effect of Machining Error on the Vibration of MEMS Device
Authors: Wang Hui , Li Wei Hua , Gao Li Li
Published: May 2015

With the development of MEMS, more attention has been paid to the uniformity between the performance of the products in practical processing and the expected performance. A case study is conducted here with fixed-fixed beam and comb-drive resonator as the pattern to explore how geometry size deviation and geometry shape error influence the devices. It is discovered that the length, inclining profile and undercutting of the anchor is the key factor which influences the vibration mode of the fixed beam, and the geometry size and corrugating profile mainly affect the comb-drive resonator.
A Variable Resistor Micro System Based on Electro-Explosion
Authors: Ding Xu Ran , Wang Ya Bin , Lou Wen Zhong , Guo Yun Long
Published: May 2015

A novel type of variable resistor micro system based on electro-explosion is described and its performance test results are presented. The variable resistor consists of four metallic leads in parallel with different width and length thus different resistances and four one-time shot MEMS solid on-off switches. By killing off the metallic lines, the variable resistor varies its resistance. Switching is accomplished by a voltage pulse. The resistor can be driven by external signal and its predicted lifetime is very long. Besides, the resistor has no movable parts, therefore the resistor can be used for long term store systems and harsh environments.
A Low-Frequency Filter in Inertial Applications
Authors: Li Qiang , Liu Xiao Wei , Yin Liang , Zhou Jia Jun
Published: May 2015

A fourth-order cascade low-pass transconductance capacitor filter is designed, and the coefficients of the filter are calculated. For the implementation of large-time constants the current shunt technique and the current cancellation technique are employed in the operational transconductance amplifiers. The whole filter is simulated in Hspice, the the cutoff frequency is 150.2Hz and the THD of the filter is 65dB, which meet the technical requirements of the inertial applications.
Anisotropic Elastic Properties of Chiral Sculptured Thin Films at Micro-Scale Evaluated by Resonance Frequency Spectra
Authors: Fang Hui , Matsumoto Kenta , Sumigawa Takashi , Kitamura Takayuki
Published: May 2015

Chiral sculptured thin films (STFs) Glancing-angle deposition (GLAD) thin films are nanoengineered to meet the requirements of a variety of applications such as micro filters, sensors, and waveguides due to their unique frequency characteristics which cannot be achieved by conventional solid materials. For the design, it is necessary to understand the elastic properties of STFs. To facilitate this, we report on our newly developed advanced micro-scale vibration testing process. In the testing, specially designed micro-specimens with surface areas of tens by tens of microns are excited using a piezoelectric (PZT) actuator and the resonance frequencies are detected by a laser device in the vertical or lateral directions successfully. The anisotropy elastic modulus of STFs composed of helical nanosprings are identified on the basis of vibration testing. The thin film shows strong characteristic anisotropy that the solid one hardly can attain. The micro-scale testing technique can be extended to other materials and microstructures.
Nondestructive Microscopy Test on Damage of Waterproof Material in Underground Engineering
Authors: Wang Qing Guo , Yang Qi Xin , Jiang Ya Jun , Yang Juan
Published: May 2015

The microstructure changes of acrylate spray-on waterproof material in alkaline groundwater environment were tentatively studied with X-ray microscopy (XRM), and the validity of deciding the failure of the material was explored in paper. Regarded NaOH solution with pH=12 as corrosive medium, after the immersion in the alkaline solution, spray-on waterproof material was scanned with XRM, and the structure was characterized with some indexes such as porosity and pore connectivity. The results show that when the waterproof material is immersed in alkaline solution for some time, the surface of the material becomes uneven, the overall porosity falls and the pore connectivity rises. It is feasible to study on the failure of waterproof material in underground engineering with XRM.
Quantitative Production of Charges with a Carbon Nanotubes Coated Electrode Based on Trichel Pulses
Authors: Deng Fu Cheng , Ye Ling Yun , Song Kai Chen
Published: May 2015

This paper presents a novel method of quantitative production of charges with a carbon nanotubes (CNTs) coated electrode. It is based on the Trichel pulse (TP) discharge which is characterized as highly regular current pulses. The charge-per-pulse transported in the discharge gap is nearly constant for a given condition. The total charges produced in unit time are an integer times of charge-per-pulse. The amount of charges and production velocity can be easily and quantitatively controlled, which may be of importance for some particular applications, such as electro-fluid-dynamic (EFD) actuator, reaction control in plasma-chemical synthesis and lab-on-a-chip. The effects of humidity and temperature on the charge-per-pulse also have been experimentally investigated and extensively analyzed.
The Parametric Analysis of the Threshold Value Judging Mechanism in MEMS Safety and Arming Device
Authors: Wang Fu Fu , Lou Wen Zhong , Liu Fang Yi , Wang Da Kui , Zhang Ming Rong , Xu Cheng Gang
Published: May 2015

In this paper, a mechanical MEMS S&A device has been proposed. The size of the device is 10mm×13mm×0.5mm. The role of the threshold value judging mechanism is to determine the environment suffered by centrifugal force and control the sub-centrifugal slider not movement under the threshold, so as to effectively guarantee the time of long-distance arming. Through establishing the three-dimensional model of threshold value judging mechanism, establishing the force and the parameters of locking-releasing mechanism, deriving the mathematical model according to the rigid dynamic mechanics theory and establishing the finite element model by using ANSYS/LS-DYNA, appropriate threshold value judging mechanism is designed to meet two items, one item is the deformation of threshold value rod is not enough to release sub-centrifugal slider when the speed is less than 60000r/min; the other item is deformation of threshold value rod can release sub-centrifugal slider when the speed is more than 60000r/min.
The Error Analysis of Micro-Flow Self-Sensing Actuator
Authors: Wei Yan Bo , Shi Li Ping , Zhou Hai
Published: May 2015

In this article the micro flow self-sensing actuator has carried on the theoretical analysis and experimental research. Using output micro-displacement generated by the first inverse piezoelectric effect to realize cell micro flow injection, using output voltage generated by secondary direct piezoelectric effect of piezoelectric ceramic to self-sensing the output displacement in the process of the micro flow injection. The experimental results show that the micro-displacement of micro-flow self-sensing actuator has nonlinear error, error is 5.03%. The error between measured micro-displacement and self-sensing micro-displacement is 63.13%. In this paper, the error causes analysis of micro-flow self-sensing actuator is from non-linearity and hysteresis, external factors, it lay the foundation for the further study of micro-flow self-sensing actuator.
The Parametric Analysis of the Lock-Releasing Mechanism in MEMS Safety and Arming Device
Authors: Wang Fu Fu , Lou Wen Zhong , Liu Fang Yi , Wang Da Kui , Lu Jun , Wu Jian , Guo Xu Hong , Zhang Zhe
Published: May 2015

In this paper, a mechanical MEMS S&A device has been proposed. The size of the device is 10mm×13mm×0.5mm. The role of the lock-releasing mechanism is to amplify the moving distance of two times, so as to effectively guarantee the time of long-distance arming. Through establishing the three-dimensional model of without optimized lock-releasing mechanism, establishing the force and the parameters of locking-releasing mechanism, deriving the mathematical model according to the rigid dynamic mechanics theory and establishing the finite element model by using ANSYS/LS-DYNA, appropriate lock-releasing mechanism is designed to meet two items, one item is that the lock-releasing rod locks the main centrifugal slider before sub-centrifugal slider movement in place; the other item is that sub-centrifugal slider will hit the lock-releasing rod when it movement in place, so the lock-releasing rod rotates around rotational positioning block and releases the main centrifugal slider.
A new approach to studying worship
Authors: Pieterse Hennie J.C.
Published: May 2015

No abstract available
Pues eso... que Sam vuelve a las andadas
Authors: Herranz Calero Nieves
Published: May 2015

Sam Ortí, más conocido llanamente como Sam, es ya una página viva de la historia de la animación española. Su fulgurante carrera cuenta con éxitos como The Werepig (2008), Vicenta (2010), o la inevitable Encarna (2003), quizás el germen de toda su producción posterior. Sam nos ha abierto las puertas de su futuro estudio-museo en Valencia, llena de los escenarios de sus películas, convertidos en dioramas de exposición que han dado la vuelta al mundo, y nos ha contado las vicisitudes de su nuevo filme, Poseso (2014), que figura con honor como el tercer largometraje de stop-motion producido en nuestro país. Nieves Herranz nos habla de este futuro estreno, que ya ha recolectado significativos premios y menciones en los festivales de cine, y que sin duda no dejará a nadie indiferente en las salas.
Sincronías y sinergias animadas: La visión de la industria de la animación de Pixar y Ghibli
Authors: Montero Plata Laura , Pérez-Guerrero Ana María
Published: May 2015

Pixar y Ghibli, dos de los estudios más internacionalmente de la industria de la animación, han mantenido una estrecha relación a lo largo de sus más de veinticinco años, que va más allá de los claros homenajes que el estudio estadounidense ha hecho a las películas de Hayao Miyazaki. Organización de exposiciones, doblajes de películas, apoyo en la distribución, documentales o clases magistrales, tanto desde Pixar a Ghibli como en el caso contrario, ponen en evidencia la relación tan prolífica y polifacética que han entablado los dos estudios de animación a lo largo de los años. Para exponer y detallar esta estrecha colaboración comercial, artística y personal, hemos invitado a las investigadoras Laura Montero Plata y Ana María Pérez Guerrero —autoras respectivamente de El mundo invisible de Hayao Miyazaki (2012) y Pixar, las claves del éxito (2013)—, a desgranar la correspondencia entre estos dos gigantes de la animación.
El verdadero ataque de los titanes: la combinación ganadora internacional de Shingeki no Kyojin
Authors: Seva Victoria Carmen Lavinia
Published: May 2015

Tras años de silenciosa pero creciente mejora de la animación japonesa, emerge Ataque a los titanes, una serie televisiva de tales dimensiones, en su producción y sus planes de mercado, que es imposible ignorarla por parte del gran público occidental. Ataque a los Titanes representa un recordatorio internacional de que la animación es una técnica capaz de subyugar también al espectador adulto. En este caso, es también una prueba de los últimos avances artísticos y técnicos en el anime, desde un lenguaje muy personal. Su triunfo no debe tanto a su idónea receta inicial como a su impresionante impacto en los públicos, convirtiéndose en un fenómeno viral, que la industria nipona ha sabido retroalimentar con suficiente maestría, hasta convertirlo en un colosal fenómeno de 2013. El presente artículo ahondará, en primer lugar, en la concepción de la serie, haciendo énfasis en los factores que la hacen destacar dentro de las series anime y en competencia con obras de acción real; en un segundo punto, introduciremos los valores artísticos de su unicidad; y, finalmente, evaluaremos su repercusión a nivel nacional e internacional.
Cuentos de viejos: los relatos de la memoria
Authors: Dematei Marcelo , Piaggio María Laura
Published: May 2015

Cuentos de Viejos es un documental colaborativo transmedia que incluye una serie de animación para TV, una plataforma web y proyectos escolares. Concebido por las productoras HIERROanimación (Bogotá) y Piaggiodematei (Barcelona), fue elegido Mejor Proyecto Transmedia en el MIFA-Festival de Annecy 2012. Ese mismo año comenzó a producirse, coproducido por la TV pública colombiana (RTVC-Señal Colombia). La serie fue estrenada en septiembre de 2013, y está en producción una tercera temporada. Recibió numerosas distinciones internacionales, y en 2014 estuvo presente en decenas de festivales incluyendo Annecy, Hiroshima, Anima Mundi, Dok Leipzig, DocDF y Animasivo. Fue merecedor de dos premios TAL (de la Red de TV pública latinoamericana), nominado al Prix Jeunesse International y el Japan Prize, y obtuvo el India Catalina a la Innovación (otorgado por la academia colombiana de TV). También ha sido galardonado en el Savannah Animation Festival (USA), Golden Kuker (Bulgaria) y Anima (Argentina). En el siguiente artículo, dos de sus principales artífices nos revelan los entresijos de este inusual modelo de éxito.
Deformar a la Gorgona: la imagen animada como estrategia para documentar el horror
Authors: Hachero Hernández Bruno
Published: May 2015

¿Qué nuevas relaciones con lo real propone el documental animado? ¿Qué nuevas configuraciones de lo visible y lo pensable plantea? Estudiar las características del documental animado a la luz del límite representativo que supone el horror es una oportunidad para reflexionar sobre la propia ontología de la imagen animada en su relación con lo real. Este artículo parte de Vals con Bashir para analizar cómo la animación se erige como imagen intermediaria frente a la no-imagen del horror. La imagen animada, al igual que el escudo de Perseo, permite abordar la realidad desde una determinada desfiguración, una distancia que plantea nuevas miradas y nuevos interrogantes para el cine.
Entrevista a Gerben Schermer, director del Holland Animation Film Festival
Authors: Álvarez Sarrat Sara
Published: May 2015

Gerben Schermer (Países Bajos, 1959) puso películas. Pero, como Schermer afirma, “esa en marcha el Holland Animation Film Festival junto al director de animación Gerrit van Dijk, en 1985. Schermer ha desarrollado una destacada carrera en la selección y programación para el HAFF, además de diseñar programas invitados para numerosos festivales internacionales. Ha sido miembro de organizaciones y consultor de organismos internacionales, y en la actualidad es miembro del comité asesor del Programa de Diseño del fondo para las industrias creativas. Schermer ha estado también involucrado en la producción de películas, y en 2010 produjo Clown’s Revolution, del artista visual chino Sun Xun, que trabajó como artista en residencia para el HAFF. En esta entrevista Gerben Schermer nos habla del perfil del Holland Animation Film Festival, su visión sobre la animación y otros muchos temas de interés para profesionales, estudiantes y aficionados a la animación.
El realismo animado de Sang-ho Yeon
Authors: Gómez Gurpegui Carlos
Published: May 2015

Este artículo se centra en la figura del director de animación surcoreano Sang-ho Yeong. Con solo dos largometrajes en su haber, ha logrado que sean las primeras cintas animadas de Corea del Sur en proyectarse en Cannes o ganar con su segunda cinta en Sitges. Su obra, aún poco conocida en nuestro país, realiza un crudo retrato de la sociedad surcoreana del momento. En el presente artículo revisaremos las bases sobre las que se asienta el cine de Sang-ho Yeong, trazando una correspondencia entre su cine y el cine independiente de animación de su país, y cómo ha sabido aunar el realismo y la animación creando un sólido discurso social, focalizando el estudio en sus dos largometrajes dirigidos hasta la fecha: The King of Pigs (Dwae-ji-ui Wang, 2011) y The Fake (Saibi, 2013).
Conociendo a Silly Walks Studio
Authors: Andrés López Rafa , Valls Ajo P.
Published: May 2015

Silly Walks Studio es un equipo de reciente creación formado por cuatro jóvenes artistas especializados en desarrollo visual y animación 2D. Este colectivo se creó en 2013 después de que sus miembros concluyesen sus estudios gracias a una Startup UPV, un programa de apoyo a jóvenes, de la cual estos cuatro egresados en Bellas Artes han sido los primeros beneficiarios en toda la Universitat Politècnica de València. Por su carácter multidisciplinar podemos encontrar en la trayectoria de Silly Walks trabajos de Motion Graphics, espots publicitarios, arte para videojuegos e incluso participaciones en películas. Hasta la fecha han compaginado el desarrollo de proyectos propios con trabajos comerciales de cierta envergadura, como la secuencia de animación para la película Pixel Theory (2013) o la imagen gráfica y audiovisual para la 5ª Edición del Máster en Animación de la UPV (2013-15). Asimismo, en el último año han trabajado como diseñadores visuales y como animadores para el sector de los videojuegos, uniendo fuerzas con el estudio Brave Zebra. En las siguientes líneas podremos conocer de primera mano a este colectivo y hacer un repaso por su corta pero intensa carrera en el mundo audiovisual animado.
HUMAN ACTION POSELETS ESTIMATION VIA COLOR G-SURF IN STILL IMAGES
Authors: Favorskaya M. , Novikov D. , Savitskaya Y.
Published: May 2015

Abstract. Human activity is a persistent subject of interest in the last decade. On the one hand, video sequences provide a huge volume of motion information in order to recognize the human active actions. On the other hand, the spatial information about static human poses is valuable for human action recognition. Poselets were introduced as latent variables representing a configuration for mutual locations of body parts and allowing different views of description. In current research, some modifications of Speeded-Up Robust Features (SURF) invariant to affine geometrical transforms and illumination changes were tested. First, a grid of rectangles is imposed on object of interest in a still image. Second, sparse descriptor based on Gauge-SURF (G-SURF) invariant to color/lighting changes is constructed for each rectangle separately. A common Spatial POselet Descriptor (SPOD) aggregates the SPODs of rectangles with following random forest classification in order to receive fast classification results. The proposed approach was tested on samples from PASCAL Visual Object Classes (VOC) Dataset and Challenge 2010 providing accuracy 61-68% for all possible 3D poses locations and 82-86% for front poses locations regarding to nine action categories.
FACE RECOGNITION USING LOCAL QUANTIZED PATTERNS AND GABOR FILTERS
Authors: Khryashchev V. , Priorov A. , Stepanova O. , Nikitin A.
Published: May 2015

Abstract. The problem of face recognition in a natural or artificial environment has received a great deal of researchers’ attention over the last few years. A lot of methods for accurate face recognition have been proposed. Nevertheless, these methods often fail to accurately recognize the person in difficult scenarios, e.g. low resolution, low contrast, pose variations, etc. We therefore propose an approach for accurate and robust face recognition by using local quantized patterns and Gabor filters. The estimation of the eye centers is used as a preprocessing stage. The evaluation of our algorithm on different samples from a standardized FERET database shows that our method is invariant to the general variations of lighting, expression, occlusion and aging. The proposed approach allows about 20% correct recognition accuracy increase compared with the known face recognition algorithms from the OpenCV library. The additional use of Gabor filters can significantly improve the robustness to changes in lighting conditions.
A DENOISING OF BIOMEDICAL IMAGES
Authors: Thanh D. N. H. , Dvoenko S. D.
Published: May 2015

Abstract. Today imaging science has an important development and has many applications in different fields of life. The researched object of imaging science is digital image that can be created by many digital devices. Biomedical image is one of types of digital images. One of the limits of using digital devices to create digital images is noise. Noise reduces the image quality. It appears in almost types of images, including biomedical images too. The type of noise in this case can be considered as combination of Gaussian and Poisson noises. In this paper we propose method to remove noise by using total variation. Our method is developed with the goal to combine two famous models: ROF for removing Gaussian noise and modified ROF for removing Poisson noise. As a result, our proposed method can be also applied to remove Gaussian or Poisson noise separately. The proposed method can be applied in two cases: with given parameters (generated noise for artificial images) or automatically evaluated parameters (unknown noise for real images).
EXTRACTION OF EXTENDED SMALL-SCALE OBJECTS IN DIGITAL IMAGES
Authors: Volkov V. Y.
Published: May 2015

Abstract. Detection and localization problem of extended small-scale objects with different shapes appears in radio observation systems which use SAR, infra-red, lidar and television camera. Intensive non-stationary background is the main difficulty for processing. Other challenge is low quality of images, blobs, blurred boundaries; in addition SAR images suffer from a serious intrinsic speckle noise. Statistics of background is not normal, it has evident skewness and heavy tails in probability density, so it is hard to identify it. The problem of extraction small-scale objects is solved here on the basis of directional filtering, adaptive thresholding and morthological analysis. New kind of masks is used which are open-ended at one side so it is possible to extract ends of line segments with unknown length. An advanced method of dynamical adaptive threshold setting is investigated which is based on isolated fragments extraction after thresholding. Hierarchy of isolated fragments on binary image is proposed for the analysis of segmentation results. It includes small-scale objects with different shape, size and orientation. The method uses extraction of isolated fragments in binary image and counting points in these fragments. Number of points in extracted fragments is normalized to the total number of points for given threshold and is used as effectiveness of extraction for these fragments. New method for adaptive threshold setting and control maximises effectiveness of extraction. It has optimality properties for objects extraction in normal noise field and shows effective results for real SAR images.
Gestação: Um desafio imunológico
Authors: Watanabe Maria Angelica Ehara , Duarte-Garcia Ellen Cristine , Carvalho Giovana Gomes de , Matsubara Natália Kimie , Vaitkevicius Ferreira Ana Camila , Zanluqui Nágela Ghabdan , Oliveira Gabriela Gonçalves de
Published: May 2015

Diversos estudos demonstram a importância de aspectos imunológicos na gestação. Durante a gestação ocorre a implantação do embrião no útero materno, onde irá se desenvolver até o final da gravidez. Dentre os aspectos imunes, pode-se citar a importância da modulação dos linfócitos T, das células natural killers (NK) e das diversas citocinas existentes no organismo materno. A tolerância materna ao feto parece ser mediada por hormônios maternos específicos e pela expressão do antígeno leucocitário humano G (HLA-G) característico na gravidez. Outros estudos sugerem que a rejeição fetal e complicações durante a gravidez podem ocorrer devido à presença de antígenos de histocompatibilidade menor (mHAg), adquiridos pela mãe a partir do compartilhamento sanguíneo com o feto, e devido à presença de anticorpos maternos contra o espermatozoide e contra o feto. O objetivo desta revisão foi descrever os aspectos imunológicos que permitem a tolerância materna ao feto na gestação, assim como possíveis causas para a rejeição do embrião e complicações durante a gravidez.
Polimorfismos genéticos associados ao metabolismo lipídico envolvidos na fisiopatologia do acidente vascular encefálico isquêmico
Authors: Flauzino Tamires , Alfieri Daniela Frizon , Kallaur Ana Paula , De Almeida Elaine Regina Delicato , Reiche Edna Maria Vissoci
Published: May 2015

O acidente vascular encefálico (AVE) é uma desordem complexa, multifatorial e poligênica decorrente da interação entre componentes genéticos do indivíduo e fatores ambientais. Estudos prévios têm estabelecido a hipertensão arterial, tabagismo, diabetes mellitus, dislipidemia, elevado índice de massa corpórea, distúrbios da coagulação e aumento da idade como fatores de risco preditores de AVE. O AVE é uma doença mais incapacitante do que mortal, que requer institucionalizações a longo prazo, pois diminui a qualidade de vida dos doentes, resultando em elevados encargos a nível social e econômico. Torna-se assim, cada vez mais importante enfatizar as estratégias baseadas na Medicina Preventiva. A dislipidemia tem sido associada à fisiopatologia do AVE isquêmico e polimorfismos genéticos que ocorrem na via metabólica dos lipídeos têm sido propostos como fatores genéticos associados ao AVE isquêmico. A identificação do componente genético na causa da dislipidemia tem sido intensamente investigada nos últimos anos. Entre os vários polimorfismos genéticos, os que ocorrem no gene do receptor de lipoproteína de baixa densidade têm sido objeto de estudos na população em geral. Os dados sobre o perfil lipídico e o estudo dos polimorfismos dos genes que codificam proteínas estruturais e enzimas relacionadas com o metabolismo dos lipídeos podem revelar a prevalência das dislipidemias em uma população, possibilitando uma intervenção direcionada para o controle e prevenção das doenças ateroscleróticas como o AVE isquêmico.
Características sensoriais e nutricionais de suplementos alimentares
Authors: Silva Mariah Benine Ramos , Oliveira Ana Flávia , Santos Hevelyse Munise Celestino dos
Published: May 2015

Suplementos alimentares são indicados quando a ingestão alimentar não supre as necessidades do organismo, situação que ocorre com maior frequência em pacientes com doenças infecciosas e crônicas, cujo gasto energético do organismo aumenta, no entanto o apetite diminui. Este estudo analisou as características sensoriais e nutricionais de sete diferentes marcas de suplementos alimentares completos não balanceados na versão em pó, em seus diversos sabores disponíveis, quatro para adultos e três para crianças, que possuem comercialização em âmbito nacional. A análise sensorial foi realizada por meio de testes afetivos. A análise das informações nutricionais foi realizada confrontando os dados presentes na rotulagem, comparando os produtos entre si. Observou-se grande diferença entre os teores de macro e micronutrientes nos suplementos alimentares estudados, podendo afirmar que os mesmos não são similares entre si. Os suplementos alimentares indicados para a faixa pediátrica apresentaram bom índice de aceitabilidade e são mais doces e saborosos quando comparados aos suplementos alimentares indicados para uso em adultos. Dois produtos não foram considerados bem aceitos em todos os sabores disponíveis. Os sabores chocolate e morango foram os mais bem aceitos e o sabor banana mal aceito entre os provadores.
Influência da adubação verde nas propriedades físicas e biológicas do solo e na produtividade da cultura de soja
Authors: Cardoso Ricardo Alves , Bento Anderson Soares , Moreski Humberto Misdei , Gasparotto Francielli
Published: May 2015

A adubação verde consiste na prática de uso de espécies vegetais em rotação, sucessão ou consorciação com outras culturas comerciais, objetivando melhoria, manutenção e recuperação das propriedades físicas, químicas e biológicas do solo. Assim, objetivou-se avaliar a influência de diferentes adubos verdes nas características do solo e na produtividade da cultura de soja. O experimento foi realizado em Maringá (PR), em delineamento de blocos casualizados, com seis tratamentos e quatro repetições: T1: aveia branca (Avena Sativa); T2: aveia preta (Avena strigosa), T3: guandu anão (Cajanus cajan), T4: nabo forrageiro (Raphanus sativus L.), T5: tremoço branco (Lupinus albus) e T6: testemunha (pousio). Ao final do experimento foram estabelecidas relações entre o adubo verde utilizado, à produção de soja, à produção de fitomassa, ao desenvolvimento de microrganismos e densidade aparente do solo. Os dados foram analisados em programa estatístico e as médias comparadas pelo teste de Tukey a 5% de probabilidade. As coberturas que propiciaram maior teor de fitomassa foram o tremoço, a aveia preta e feijão guandu. Os tratamentos que mais influenciaram o aumento de microrganismos do solo foram o tremoço, nabo forrageiro e feijão guandu. Em relação à produtividade, maiores valores encontrados foram obtidos nos tratamentos com feijão guandu, tremoço e aveia branca. Quanto à densidade aparente do solo, o tratamento com nabo forrageiro apresentou melhor resultado.
A percepção do cuidador familiar de idosos dependentes sobre o papel do profissional da saúde em sua atividade
Authors: De Oliveira Maíra Caroline , Boaretto Mariana Laís , Vieira Lizyana , Tavares Keila Okuda
Published: May 2015

Objetivo: conhecer a opinião de cuidadores de idosos dependentes sobre como o profissional da saúde pode atuar no intuito de auxiliá-lo a ser um bom cuidador. Materiais e Métodos: Trata-se de um estudo qualitativo descritivo-exploratório com amostra composta por cuidadores familiares de idosos dependentes. A coleta de dados foi baseada na pergunta orientadora: “O que você acha que os profissionais da saúde poderiam fazer para te ajudar a ser um bom cuidador(a) de idosos dependentes?”. Resultados: Foram entrevistados 13 cuidadores. Por meio da análise das falas transcritas foi possível obter três categorias temáticas: (1) Desconhecimento de alguns cuidadores sobre como os profissionais de saúde pode os ajudar em sua atividade; (2) Orientações e demonstrações: algo que poderia auxiliar o cuidador e o idoso dependente; (3) Ajuda psicológica e redes de apoio: fundamental para o idoso e também para o cuidador. Conclusão: A maioria dos entrevistados não apresentava informações e orientações necessárias para realizar os cuidados específicos com o idoso de maneira adequada, evidenciando a importância da atuação dos profissionais da saúde no sentido de repassar orientações e promover treinamento de habilidades específicas, fornecer ajuda psicológica especializada e estimular a formação de grupos de apoio para auxiliar tanto o cuidador como o idoso dependente.