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中村 滋男, 難波 入三, 須藤 公彦, 松本 拓也
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セッションID: S1603-1-3
発行日: 2010/09/04
公開日: 2017/08/01
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Thermally-assisted magnetic recording (TAMR) is one of the most effective ways to increase the recording density of hard disk drives. A laser diode (LD) is assumed as a heat source of TAMR, and the light delivery mechanics from an LD to a slider of a head gimbal assembly (HGA) in a hard disk drive is a key component of TAMR We designed, prototyped, and evaluated a HGA with a flexible beam that is considered to be a light path from an LD to a slider. Its evaluated results show good mechanical properties as an HGA. The stable flying height and small vibration of the assembly with a flexible beam were practically confirmed. It was concluded that the mechanics of light delivery using a flexible beam in an HGA has limited effect on the mechanical properties of an HGA.
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並川 真也, 高橋 和彦, 橋本 雅文, Takako OHTA
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セッションID: S1601-1-1
発行日: 2010/09/04
公開日: 2017/08/01
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This paper investigates emotion recognition based on Sentics theory proposed by Manfred Clynes. To collect sentgraphs defined by finger pressure, a simple interface system is designed by using a three-axes electrostatic force sensor. For emotion recognition, support vector machine (SVM) are designed and investigated. Using gathered data under psychological experiments, computational experiments of classifying and recognizing 7 emotions are carried out. Experimental results show that the emotion classification using the SVM is feasible but the emotion recognition is hard.
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水野 賀文, 片山 傳生, 田中 和人, 仲町 英治
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セッションID: S1601-1-2
発行日: 2010/09/04
公開日: 2017/08/01
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張 皓, ロペズ ギョーム, 酒造 正樹, ドロネー ジャンジャック, 山田 一郎
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セッションID: S1601-1-3
発行日: 2010/09/04
公開日: 2017/08/01
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In recent years, an increasing number of people suffer from lifestyle diseases, such as metabolic syndrome. Eating habits monitoring is an important parameter for life-style diseases prevention. Since, we have been developing a system to monitor meal time activities. Our system consists of two bone conduction microphones connected to a portable IC recorder that collects internal body sound data. In the meal time activities differentiation process, we adopted a wavelet function for the feature extraction. We extracted 70 feature vectors from coefficients of discrete wavelet transformation, then we selected the optimal feature vectors set using minimal-redundancy-maximal-relevance criterion (mRMR), and finally we used probabilistic neural network (PNN) to classify meal-related activities. Experiments were carried on sound data from six persons. Our model proved to achieve better classification accuracy, and selected features to be independent from individual differences.
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松浦 成太朗, ロペズ ギヨーム, 酒造 正樹, 山田 一郎
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セッションID: S1601-1-4
発行日: 2010/09/04
公開日: 2017/08/01
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Nowadays, hypertension diagnosis often uses data measured by ambulatory blood-pressure monitoring (ABPM). Together with blood pressure automatic measured by ABPM, patients have to fill their preceding behavior and current status into a card, though such behavior recording is not efficient due to the strain caused by repeated handwriting, and recorded information lack of objectivity because it is self-reported data. We have been studying a method of behavior classification from sensor data, aiming at automatic behavior recording for ABPM. We selected a set of actions useful for ABPM based on physicians' interviews results, and for each action, we used wearable sensors to measure the acceleration and the angular velocity of both the trunk and the right wrist on volunteer participants. We propose an original behavior classification method in two steps. The first step consists in classifying the data into three groups of actions regarding their influence on blood pressure variation, that are the motion-related actions group, the work-related actions group, and the stillness group. The second step consists in action detection after features selection using the correlation ratio. As a result, the proposed method achieved an average action groups correct recognition rate of more than 95%, and proved to be an effective way to identify objectively the main causes of blood pressure variations.
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鈴木 章夫, 森川 善富, 松本 荘平
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セッションID: S1601-2-1
発行日: 2010/09/04
公開日: 2017/08/01
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We propose a new correlation dimension calculation method for the transient response analysis of human condition. To achieve the monitoring of nonstational human condition, we apply a moving window technique and an overlapping reconstructed orbit technique to the point correlation dimension estimation method. This method is applied to transient electrocardiogram (ECG) time series on standing up. We find a significant difference between a response pattern of fatigued state and unfatigued state.
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佐川 貢一, 後藤 晃史, 石田 水里
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セッションID: S1601-2-2
発行日: 2010/09/04
公開日: 2017/08/01
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The purpose of this study is to find out the evaluation parameters that illustrate the human postural control ability while standing and to investigate the reliability of the proposed parameters using intra-class correlation coefficient. One-link inverted pendulum model is applied to the human body, and time variant PD gain and pole of the postural control system are estimated applying constant trace method. Eleven subjects are asked to stand still, incline forward as far and quickly as possible, and return to the original posture in sagittal plane with subjects' eyes-opened, eyes-closed, and one-legged to simulate unstable condition of standing posture. The experimental results show that five distinguishable parameters are obtained: one from the proportional gain, two from the differential gain, and two from the fluctuation of real part of pole. Moreover the reliability of the estimated parameters is assured by the experiments performed six times.
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奥山 武志, 近 雄介, 川副 智行, 豊田 成人, 長野 種雅, 柿澤 みのり, 仲谷 正史, 田中 真美
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セッションID: S1601-2-3
発行日: 2010/09/04
公開日: 2017/08/01
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In this paper, a sensor system for evaluating tactile feelings of scalp hair is developed. A sensor with concentric circles shape projection which imitates fingerprint was mounted on a beam that was fixed to a linear slider. A Polyvinylidene Fluoride (PVDF) film was used as a sensory part. The sensor output was obtained by contacting with the measuring object and scanning on it. Three parameters that are expected to have correlations with tactile feelings were calculated by signal processing of sensor outputs. Evaluation of human hair has problems due to randomicity and difficulty of putting them uniformly without overlapping. Therefore, a plate imitating the physical and chemical properties of human hair surface was used as measuring objects for stable measurement. The plates cleaned down with several kinds of treatment were measured by the sensor and human sense. By comparison between sensor outputs and sensory evaluation, it is confirmed that the sensor system can discriminate the treatment effects. The results suggest that these factors could be evaluated by the sensor system.
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佐藤 広和, 奥山 武志, 田中 真美
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セッションID: S1601-2-4
発行日: 2010/09/04
公開日: 2017/08/01
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This paper describes a development of a measurement system for monitoring muscle activities of gastrocnemius muscle using a mechanomyogram (MMG) sensor. The measurement system is composed of MMG sensor, load cell and monitoring display. In MMG measurement of gastrocnemius muscle, the subjects sit on the measurement system in the long sitting position and perform a leg isometric constraction against a footboard with load cell. In experiment, for stable and reproducible measurement, proper footboard angle and proper force stepping on the footboard are investigated. First, to decide proper footboard angle, MMG measurement are carried out under conditions with three kind of footboard angle. Next, to decide proper exerting force, MMG measurement are carried out under conditions with three kind of force. As a result, it is found that the MMG measurement can be carried out stably and reproducibly under conditions that footboard angle is π/9[rad], and force is 7[%] of maximum voluntary contraction.
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木口 量夫, 清水 昴人, 王 李福, 林 喜章
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セッションID: S1605-1-1
発行日: 2010/09/04
公開日: 2017/08/01
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This paper describes a lower-limb power-assist robot which assists the perception of the user using laser range finders. If the robot has not found any problems in the user's motion, then the ordinal power-assist is carried out by the robot. On the other hand, if the robot has found some problems in the user's motion in an environment, the robot tries to modify the user's motion to walk properly. However, the user might fall by the perception assist because the perception assist generates the additional force without user's attempt. Therefore, in the proposed perception assist method, the robot prevents the user from falling by considering ZMP. The effectiveness of the proposed method was evaluated by the experiments.
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本多 博彦, 葛西 成泰, 高橋 宏
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セッションID: S1605-1-2
発行日: 2010/09/04
公開日: 2017/08/01
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As health symptoms change over time, it is difficult for individuals to maintain use of their equipment and computer applications. We focused on the movement of the mouse and pointer to design a system that adjusts the speed of the pointer movement. This system automatically supplements the user interface of the personal computer. For test purposes, we asked a physically-challenged person to evaluate this system and were able to show significant results.
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五十嵐 洋, 鈴木 聡, 小林 晴美, 原島 文雄
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セッションID: S1605-1-3
発行日: 2010/09/04
公開日: 2017/08/01
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Most of conventional human-machine systems assumed to assist only a single operator. In such cases, the system should only pay attention to his/her operation characteristics. If there were multiple operators, they would consider others for suitable cooperation. This paper addresses quantification methods for social cooperation characteristics in cooperative tasks. Using these, we found that the ratio of three typical indexes relate to task performance. Finally, correlation between these of indexes and a task performance is analyzed.
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佐藤 太一, 田島 岳彦, 田中 淳司
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セッションID: S1605-1-4
発行日: 2010/09/04
公開日: 2017/08/01
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We have proposed a system that supports the proficient operation of a drilling machine with acoustic information. We conduct a fundamental investigation of the difference of drilling characteristics between professional and beginner. As a result, we have shown that drilling characteristics are mainly governed by the duration of forcing to work for drill. The audio system provides the drilling machine operator with acoustic information with the aim of conferring an intuitive feeling of how the drilling machine is operated. We made sounds based on operation of skillful subject to investigate whether or not to listening these sounds promote efficient operation of the drilling machine.
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田中 由浩, 佐野 明人, 藤本 英雄
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セッションID: S1605-2-1
発行日: 2010/09/04
公開日: 2017/08/01
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Human tactile perception has important characteristics, which are self-reference and bidirectionality. Self-reference indicates that tactile stimuli by the same object are different from other persons. It is an important factor for evaluating tactile sensations. Bidirectionality indicates that we adjust touch motion according to objects. It contributes the enhancement of the sensing capability. In this paper, tactile sensing considering self-reference and bidirectionality is presented. A prototype of the sensor is developed. Then, experiments are carried out on the valuation of roughness on the curved surface. Result shows the validity of the sensing and potential of its application.
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石井 和男, ナシライ アミール, 首藤 慎吾, 神田 敦司, 正田 明人, 山口 耕二
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セッションID: S1605-2-2
発行日: 2010/09/04
公開日: 2017/08/01
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The sea transportation by ships covers most of trade volume, and the technologies for fuel efficiency and reductions of carbon-dioxide emissions should be developed. One of the technical issues to improve fuel efficiency of ships is how to prevent the marine biofouling to the ship hulls and remove organisms from ships. In general, the cleaning of ship hull is carried out on the ship inspection in dock yard or by divers in harbor. Frequent cleaning of ship walls is desirable to keep good fuel efficiency, however, the ship inspection on dock is done once a year and the cleaning by divers is high-cost and involve high risk. One of the solutions to the problem is the introduction of underwater robots to clean ship surfaces. In this paper, an underwater robot for ship hull cleaning is proposed and examined through ship hull cleaning experiments.
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ナシライ アミール, 本田 荘孝, 石井 和男
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セッションID: S1605-2-3
発行日: 2010/09/04
公開日: 2017/08/01
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With regard to the current sewer pipe inspection technology, all commercial robots are completely tele-operated, usually via a tether cable, by a human operator. In addition, current sewer inspection robots have a poor mobility function to pass any kind of pipe-bends such as curves and junctions so that those robots are only capable to move into the straight pipes. Inspecting the sewage pipes using the state of the arts inspection methods by the current robots is costly, mostly human cost, and not fast enough to check and inspect the amount of sewage pipes will grow stronger than it has actually happened, especially in Japan. We have been working on sewer pipe inspection robots called "KANTARO" which have the specific mechanical structure to move on curves and junctions with simple motion control algorithm. In this paper we propose a self-localization method using passive arms attached on the both sides of robot.
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亀谷 知宏, 松田 佑, 山口 浩樹, 江上 泰広, 新美 智秀
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セッションID: S1604-1-1
発行日: 2010/09/04
公開日: 2017/08/01
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The PSP technique is a nonintrusive pressure measurement method based on the oxygen quenching of the luminescence of luminophore. Since the PSP measurement is generally affected by temperature changes, it is difficult to precisely measure the pressure on a surface with non-uniform temperature distribution. In this study, we focused on pyrene sulfonic acid (PySO_3H) as a luminophore of PSP. It is known that the PySO_3H has two peaks in the emission spectra which have opposite temperature-dependent properties. Temperature effects can be eliminated by measuring the luminescence at an appropriate wavelength band between these two peaks. We successfully obtained the time-averaged pressure distribution on the rotating disk by the use of PySO_3H. The pressure shows a concentric circle distribution and decreases toward the disk center at every rotational speed (10000-20000rpm). It is also found that the pressure difference between the inner and the outer region of the disk is proportional to the square of the disk angular velocity.
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畑中 貴達, 山下 裕介, 岡 孝治, 佐伯 文浩, 松岡 広成, 福井 茂寿
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セッションID: S1604-1-2
発行日: 2010/09/04
公開日: 2017/08/01
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In the head-disk interface (HDI) of a hard disk drive (HDD), lubricant deformation affects flying characteristics of the head slider, as the flying height decreases. Therefore, it is very important to investigate the deformation and flow characteristics of lubricant on a recording disk. In particular, in heat-assisted magnetic recording (HAMR), laser heating of the lubricant induces tempeature distribution, which may cause deformation of the lubricant film. In this paper, thickness distributions of locally heated perfluoropolyether (PFPE) films were measured experimentally and were calculated numerically by using unsteady and linearized long-wave equation considering the temperature and the film thickness dependence of the surface tension. The film deformation characteristics due to the temperature distribution were discussed and the experimental and theoretical results were compared.
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滝本 泰樹, 板倉 誠史, 張 賀東, 福澤 健二, 伊藤 伸太郎
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セッションID: S1604-1-3
発行日: 2010/09/04
公開日: 2017/08/01
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By measuring force-distance curves with an environmental scanning probe microscope, we quantitatively evaluated the effect of ultraviolet (UV) irradiation on adhesive properties of 2-nm-thick perfluoropolyether (PFPE) Z03 films. As bonding ratio increased with UV irradiation, adhesive force of the PFPE Z03 films initially decreased, but then increased after reaching a minimum at the bonding ratio of about 0.6. This is possibly attributed to the increase of meniscus force caused by decreased mobile lubricant thickness, and the decrease of van der Waals force between two solid surfaces caused by increased bonded lubricant thickness.
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谷 弘詞, 清水 豪, 小林 永芳, 谷池 芳寛, 森 和也, 多川 則男
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セッションID: S1604-1-4
発行日: 2010/09/04
公開日: 2017/08/01
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The molecular height corresponding to monolayer thickness of several types of PFPE lubricants (Z-do12000, Z-tetraol, A20H2000, ARJ-DS, ARJ-DD, and OHJ-DS) with different molecular structures was estimated from their spreading profiles. The molecular height of Z-do12000 was smaller than that of Z-tetraol, even though these lubricants had almost equal molecular weights. This result shows that the molecular height of the lubricant with high-polarity end groups was higher than that of the lubricant with low-polarity end groups. ARJ-DD showed higher molecular height than ARJ-DS, because the polarity of the two OH end groups in ARJ-DS was lower than that of the four OH end groups in ARJ-DD. On the other hand, OHJ-DS showed a low molecular height even though it had the highest molecular weight and four OH functional groups. Thus, a lubricant molecule with a low polarity per segment of the main chain has a low molecular height and shows a low degree of conformation on a carbon surface. These experimental results agreed with molecular dynamics (MD) simulation results. Therefore, it can be hypothesized that lubricants with multidentate functional groups having strong polarities do not exhibit a flat conformation on a disk surface because the lubricant molecules form random coil shapes on account of the strong polarity. On the basis of these results, we propose a design rule for lubricant molecules to achieve flat conformation on magnetic disks, i.e., a flat molecular conformation can be achieved on a magnetic disk surface by using molecules that have multisegments with a weak polar function like as OHJ-DS.
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多川 則男, 前埜 聡, 谷 弘詞
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セッションID: S1604-1-5
発行日: 2010/09/04
公開日: 2017/08/01
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In this study, we conducted experiments to investigate the dynamic touchdown and takeoff hysteresis behavior of TFC sliders. The effect of lubricant film thickness on hysteresis dynamics of the TFC sliders was investigated in the experiments. We also performed similar experiments related to the hysteresis behavior of sliders without TFC and discussed the differences between the slider hysteresis dynamics for the various cases. A specific and interesting phenomenon was observed regarding the slider touchdown in the case of lubricant films with large thicknesses, suggesting the feasibility of developing surfing recording HDI based on thick lubricant films.
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青木 雄太, 熊谷 誠治, 杉本 尚哉, 戸井田 康宏
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セッションID: G0900-1-1
発行日: 2010/09/04
公開日: 2017/08/01
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Activated carbons were fabricated by heating the extrusion-molded precursor made from carbonized rice husk (RH) and sugar-based binder at 850℃ in CO_2 and then by removing the silica component therein by means of NaOH extraction. Textural properties of the RH-based activated carbons (RHACs) were evaluated by nitrogen adsorption isotherm at -196℃. The specific surface area and the pore volume of RHACs were enhanced by increasing the removal rate of the silica component, which were accomplished by changing the concentration of NaOH solution, the immersion temperature, and the immersion time. A highly textured structure (micropore volume: 0.44 cm^3/g, mesopore volume: 0.35 cm^3/g, BET specific surface area: 1294 m^2/g) was observed on the RHAC in which almost silica component was removed by immersion in NaOH solution at the elevated temperature (80℃).
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松尾 裕矢, 熊谷 誠治
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セッションID: G0900-1-2
発行日: 2010/09/04
公開日: 2017/08/01
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The composites were fabricated from agricultural waste of rice husk (RH) and industrial waste of carbon fiber (CF) ends. The powder-state RH mixed with chopped CF ends (0 to 20 mass%) was molded into a slab by means of hot pressing without using any binders, and then heated at high temperatures by using an electric furnace. The kinetic friction and wear properties of the composites were evaluated under the contact with a SUS304 ball. The CF addition to the composites was effective at the low temperature, and not effective at the high temperature. The composites added with no chopped CF and heated to 1000℃ displayed the lowest kinetic friction coefficients of 0.12 and the lowest specific wear rate of 1,3×10^<-9> mm^2/N.
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奈良 松範
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セッションID: G0900-1-3
発行日: 2010/09/04
公開日: 2017/08/01
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We paid attention to the recyclability's of the steel material goodness, and researched the method for fitting the effect of the recycling frequency in LCA. Amount of distribution of the steel material in the ironworks and the city was investigated. The steel material has been accumulated partially of the bridge, the railway, and the building of the city. The final attainment point of the scenario that the steel material accumulated in the city by using the Markov process model returned to the ironworks as a scrap was examined. In the calculation that uses a current transition probability, it has been understood that the change doesn't take place in the distribution of the steel material after a long time passes.
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奈良 松範, 柳平 裕太
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セッションID: G0900-1-4
発行日: 2010/09/04
公開日: 2017/08/01
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As for bioethanols produced with an unused wood, practical use as one of the renewable energy is expected. In the this study, the abandoned wood-based material was researched and it researched concerning the method of the oxidation decompose by the method of using the photocatalyst with a small environmental impact. The photocatalyst used is a titanium dioxide. Because it is not consumed by the reaction, and catalysis functions to the photocatalyst because of sunlight, it is thought that there is little environmental impact. The decomposition experiment of wood dyes. Moreover, the oxidative decomposition of the saw rubbish can have been able to be done by the photocatalyst and to confirm it.
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中川 一人, 星野 和義, 山崎 博司, 鈴木 圭
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セッションID: G0900-1-5
発行日: 2010/09/04
公開日: 2017/08/01
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The capture and storage of carbon dioxide has been identified as a potential strategy for mitigating global warming. In particular, the use of hydrates for capturing and storing carbon dioxide is being considered. However, it is difficult to transport hydrates because of their low liquidity. In the present study, we attempted to produce a hydrate from an oil-in-water emulsion; the hydrate slurry thus obtained was expected to have high fluidity. Water-in-silicone oil (W/O) emulsions were prepared with the water content ranging from 0.2-0.5 by volume; to these emulsions were added a nonionic surfactant. Reagent-grade carbon dioxide was added to the hydrate emulsions to act as the guest molecule.
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瀬名波 出, 矢吹 匡, 小西 照子, 平良 東紀
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セッションID: G0900-1-6
発行日: 2010/09/04
公開日: 2017/08/01
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The recovery of carbon dioxide (CO_2) is one of the most important topics to improve global environments. The exhausted gases from power generator using petroleum and coal or incinerator include more than 10% of CO_2 which is excellent source for the multiplication of plants in which photosynthesis occurs with CO_2 and water. The higher the concentration of CO_2 is, the more the reaction rate gains. We have studied and found the species of green algae useful for recovery of CO_2 and the proper condition to best growth of the algae under the high concentration of CO_2 in a continuous flow water bath. In addition, we succeeded that making of bio-ethanol from sea green algae. We describe the development of absorption and recirculation technique of CO_2 by using the above-mentioned process.
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中鉢 実則, 長澤 武
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セッションID: G0900-2-1
発行日: 2010/09/04
公開日: 2017/08/01
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This Silent Discharge type of DPF (Diesel Particulate Filter) has been studied for reducing PM (Particulate Mater), we call it "SDeDPF". This SDeDPF was applied a Metal Fiber Sheet (MFS) for discharge electrodes to reduce backpressure and to mix exhaust gas well in a discharging space. Usually, exhaust gas temperature of diesel engines is under 200 or 250℃ at normal city driving condition. Under that condition, generally PM is not bourn out in the normal ceramic DPF. This SDeDPF aims to remove PM chemically and electrically even at low exhaust gas temperature continuously. Finally, in the basic lab test result, 95% reduction of PM has been verified by SDeDPF with a special Turbulent Block for turbulent and slower velocity of exhaust gas, the most suitable gap between electrodes and an optimum total area of piled electrodes. Also, its pressure drop was almost same as usual ceramic DPF.
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有冨 正憲, 高梨 順子, 細渕 慈貴, 長谷川 紀子
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セッションID: G0900-2-2
発行日: 2010/09/04
公開日: 2017/08/01
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The volunteers for the relief operation in the disaster area told that they were pressed for life water using for toilet, wash of tableware and underwear, showers and so on. In this paper, a simplified and compact treatment system, which can continuously purify turbid water in rivers, lakes, ponds and so on to the life water and can be transported to the disaster area by a helicopter, was developed. Turbid water is pumped up and is mixed with inorganic flocculant. The mixture flows into a special reactor tank, is turbulently stirred to form a heavy flock and is filtered to eliminate the flock. As a result, the filtered water can be used for the life water.
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高梨 順子, 細渕 慈貴, 有冨 正憲, 長谷川 紀子
原稿種別: 本文
セッションID: G0900-2-3
発行日: 2010/09/04
公開日: 2017/08/01
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It was clarified in our previous papers that chemical materials which may impact the environment and ecosystem are included in the water cooling cutters for asphalt road improvement. A treatment system of the cutting water was developed, which can continuously collect and separates it into filtered water and the residues including toxic substances. In this paper, the developed system had been used in several works on asphalt road improvement. As a result, the system was improved to be operated more steadily. In addition, the residues were solidified by using coagulant to prevent toxic substances from scattering discharging into the environment.
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鈴木 実, 宇田川 洋一, 山口 沙耶香
原稿種別: 本文
セッションID: G0900-2-4
発行日: 2010/09/04
公開日: 2017/08/01
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Ultra-high pressure underwater shock wave was applied to sterilize microbe. The imploding detonation of a propane-oxygen mixture was used to generate underwater shock wave. We investigated imploding detonation waves in an approximately cone-shaped combustion chamber having a maximum inner diameter of 60 mm. As an object of the sterilization experiments, Artemia salina and Escherichia coli were used. We found that we could completely sterilize Artemia salina and Escherichia coli by 5 times treatments of the underwater shock wave that maximum pressure was about 100 MPa.
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佐藤 靖
原稿種別: 本文
セッションID: S2101-1-1
発行日: 2010/09/04
公開日: 2017/08/01
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The overall structure of Japan's funding system has changed greatly since the 1990s. Rapid increases in the number and scale of competitive funds, along with the establishment of relevant rules and institutional mechanisms, have stimulated R&D activities at Japanese universities. So far, however, the competitive funds have not been designed based on rigorous policy analysis. In operating and improving the competitive funds, it is important for Japan to learn from the historical experience of the United States, which is by far the most advanced country in the operation of grant systems. It is also necessary to identify problems for competitive funds in Japan from the perspective of university researchers who actually conduct R&D.
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加藤 浩
原稿種別: 本文
セッションID: S2101-1-2
発行日: 2010/09/04
公開日: 2017/08/01
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西村 由希子, 隅藏 康一
原稿種別: 本文
セッションID: S2101-1-3
発行日: 2010/09/04
公開日: 2017/08/01
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In this study we made an interview based on questionnaire for the analysis of career path of human resources engaged in industry-academia cooperation in Japan and several countries (US, UK, France, China, Singapore). We have shown academic fields, occupational experience, and main role in the office, of the respondents. Important skills or qualifications for current functions of the respondents are also investigated. According to our study, we found that there are 4 types of career path of human resources for intellectual property (IP) management in Japan; faculty model, experienced business person model, IP specialist model, and administration model.
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隅藏 康一, 齋藤 裕美
原稿種別: 本文
セッションID: S2101-1-4
発行日: 2010/09/04
公開日: 2017/08/01
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We carried out an enquiry survey aiming at the inventors whose names are listed as inventor in the patent application of large pharmaceuticals or bio-startups. It was found that the biggest factor inhibiting R&D in industry is patents owned by corporation. It was also found that patents, know-hows and materials owned by university are bigger inhibiting factors for R&D of start-ups than for that of large pharmaceuticals.
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齋藤 裕美
原稿種別: 本文
セッションID: S2101-1-5
発行日: 2010/09/04
公開日: 2017/08/01
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This paper explains what firms research with academia, focused on size of employee. Concretely, we analyze relationship between size of firm and rate of joint research with academia. We obtained the survey data for firms by conducting an original questionnaire survey delegated to an investigation company. In this paper, we used data of about 5300 firms (response rate, 25%). We approached with probit model and point diagram of rate of joint research with academia. As a result, we found that big firms totally tend to conduct joint research with academia more than small firms although very small firms also tend to joint with academia as a previous work point out.
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中川 啓太郎, 新谷 篤彦, 伊藤 智博, 藤田 勝久
原稿種別: 本文
セッションID: G1000-1-1
発行日: 2010/09/04
公開日: 2017/08/01
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In this paper, we propose a simultaneous transportation and separation system using the three-dimentional vibration and magnetic field. The equations of motion of works including magnetic force are derived. The effect of the magnetic force and mass of work on the vibration behavior is investigated by numerical simulation. By proposed method, various works with similar values of friction coefficients, magnetic property, and mass can be separated and transported simultaneously.
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小林 誠也, 荻野 弘彦
原稿種別: 本文
セッションID: G1000-1-2
発行日: 2010/09/04
公開日: 2017/08/01
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In recent years, electric vehicles have come to be used gradually. It is expected that In-wheel motor system is used widely in future as driving unit for small electric vehicles. However, mechanical brake system is often used because there is no space in tire wheel when In-wheel motor system is used. Moreover, an antilock brake system cannot be set up. However, the stiffness of mechanical brake system is smaller than that of the hydraulic brake system, and response performance of the brake force of the mechanical system is low. In the present study, it aims to improve run stability of the small electric vehicles that use mechanical brake system. In this paper, the hydraulic four wheel model with antilock brake system was constructed. The change of brake force, when antilock brake system was operated, in the brake system that used the mechanical braking system together with hydraulic braking system was simulated.
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長谷川 紳, 荻野 弘彦
原稿種別: 本文
セッションID: G1000-1-3
発行日: 2010/09/04
公開日: 2017/08/01
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In recent years, hybrid vehicles and electric vehicles are becoming increasingly popular as a means of improving environmental problem. The drive method of electric vehicles is often installed at the wheel of the tire. We call this type "In-wheel motor system". The transfer energy loss and weight of this system are very small. But electric vehicles with In-wheel motor system use hydraulic and mechanical brakes, so it is difficult to install Anti-lock brake system (ABS). The aim of this research is to establish the skid control of small electric vehicles with hydraulic and mechanical brake system, and improve safety. This report discussed the hydraulic simulation of ABS and vehicle motion simulation for two-wheel models.
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安藤 嘉則, 茂木 雄太, 鹿沼 圭之, 村上 岩範, 山田 功
原稿種別: 本文
セッションID: G1000-1-4
発行日: 2010/09/04
公開日: 2017/08/01
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It is necessary to be able to carry a load to any kind of place by transportation vehicle safely. For that purpose load-carrying platform horizontal level-keeping performance is significant on a transportation vehicle. However, a vehicle does not have a platform level-keeping function generally. Such a vehicle needs to have enough traveling performance also. In this research, it is aimed the stability of the load-carrying platform on level-keeping. A new system is developed for level control of roll direction. Such a system is added to pitching system. A leveling control for pitch and roll angles is carried out with the signal of the acceleration sensor. Then the performance of an experiment machine in cart driving is confirmed.
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長井 健一郎, 生沼 秀司, 石井 達哉
原稿種別: 本文
セッションID: G1000-1-5
発行日: 2010/09/04
公開日: 2017/08/01
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世界的な環境問題への関心の高まりと、今後見込まれる航空輸送量の増加より、航空機の騒音規制はますます厳しくなるものと予想される。航空機騒音の主な要因はエンジンからの騒音であるが、近年ではターボファンエンジンの高バイパス比化により低騒音化が進み、相対的に高揚力装置や離着陸装置など機体から発生する騒音が顕著になってきている。このため今後は機体システム全体での騒音低減に取り組む必要がある。航空機の騒音がどこから放射されているのかを正確に把握するため、我々は実機航空機の騒音源探査に取り組んでいる。地上に設置した多数のマイクロフォンにより航空機の上空通過時の音響信号を収録し、それぞれのマイクロフォンへの到達時間の差から、音の発生位置を逆算する解析手法である。この解析の際にはマイクロフォンと航空機との相対位置および相対速度が重要になってくるが、列車や自動車と違って航空機は毎回同じ経路と速度で上空を通過することは困難なので、これらの計測を正確に行うことが重要になってくる。本研究では地上に設置した2台のラインスキャンカメラにより、ステレオ撮影法の原理を用いて航空機の3次元的な通過位置および通過速度を自動解析することを目的とする。この計測システムを実際の飛行試験に適用し、レーザー測域センサおよび機体搭載GPSによる計測との比較を行ったので、その結果を報告する。
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篠原 悠作, 関 健太, 岩崎 誠, 平井 洋武, 珍田 寛, 高橋 昌樹
原稿種別: 本文
セッションID: G1000-2-1
発行日: 2010/09/04
公開日: 2017/08/01
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This paper presents a controller design approach of load devices considering improvement of disturbance suppression characteristic at specific frequency. The disturbance with specific frequency generated by an abrasive motor in the system deteriorates tracking performance for the target load, resulting in the lower control accuracy. In order to compensate for the disturbance, therefore, a simple feedback compensator is designed to improve the disturbance suppression capability at specific frequency, where resonant filter is designed by paying attention to vector locus of open-loop characteristic. The effectiveness of proposed approach is verified by experiment using actual load devices.
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岡 慎平, 伊藤 智博, 新谷 篤彦
原稿種別: 本文
セッションID: G1000-2-2
発行日: 2010/09/04
公開日: 2017/08/01
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In this paper, we study the ejection behaviors of granular bodies in a circular cone shaped vessel. Here, elasto-plastic materials such as lead are treated. The elasto-plastic behavior at the impact is modeled as a bilinear type force-displacement characteristics, And we analyzed the behavior of each particle by Discrete Element Method (DEM). We conducted simple impact experiment and a corresponding analysis. Comparing the experimental and analytical result, we investigated the validity of a bilinear type force-displacement modeling. In numerical analysis, we investigated the ejection time and stoppage for various parameters such as the initial location, the taper angle and the friction coefficient. which have huge influence on the behavior of granular bodies.
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八田 将佳, 新谷 篤彦, 伊藤 智博
原稿種別: 本文
セッションID: G1000-2-3
発行日: 2010/09/04
公開日: 2017/08/01
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In this paper, we examine the effect of seismic inputs on the response behavior of a rotor supported by oil film bearings. The moment of inertia of a rotor and the fluid force due to oil film bearings are considered in the analytical model. We investigate the loci of centers of the rotor and the journal using the time marching method. At first, we show that the response behavior of a rotating rotor without base excitation. At second, the effect of sinusoidal base excitation is investigated. At last, we examine the relationship between the response behavior and the predominant period of seismic waves.
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金子 康智
原稿種別: 本文
セッションID: G1000-2-4
発行日: 2010/09/04
公開日: 2017/08/01
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The vane used in a low pressure end of steam turbine is usually fixed to shroud and casing by welding both ends. In such a vane structure, the damping in operation is comprised of the material damping and the aerodynamic damping, because the structural damping is very small. In this paper, the vane is modeled by the uniform beam fixed at both ends, and the effect of the material damping on the vane flutter is studied. The critical material damping for vane flutter and the allowable vibratory stress are calculated and compared for the solid vane and the hollow vane.
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青木 繁, 深野 あづさ
原稿種別: 本文
セッションID: G1000-2-5
発行日: 2010/09/04
公開日: 2017/08/01
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Seismic response of structures is nonstationary random process. Mean square value is one of the representative statistical values. Calculating method for such a response is complicated. In this paper, a simplified calculation method for integral of mean square value of the response of the secondary system is proposed using mean square value of stationary random process. Nonstationary characteristics of amplitude and frequency are considered. It is found that the proposed method gives exact values of integral of mean square value of the response.
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スウーチュー クラウデュヴァレンティン, 荒木 康光, 飛石 翼
原稿種別: 本文
セッションID: G1000-2-6
発行日: 2010/09/04
公開日: 2017/08/01
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An active control colloidal damper (ACCD), which is able to change its damping and elastic characteristics according to a specific type of external excitation is investigated. Control of the damping coefficient and spring constant is achieved by using a pressure controlling device, i.e., either by using a pump equipped with a servo-valve to adjust the pre-pressruization level of the ACCD cylinder, or by using an irradiating device to adjust the diameter of the silica nanopores (adjustment of the lyophobic coating thickness). Area of the recorded hysteresis gives information on the damping characteristics, and the slope of the central line of the same hysteresis gives information on the elastic characteristics. By increasing the pre-pressure or by decreasing the diameter of silica nanopores, the spring coefficient increases. Optimum pre-pressurization level to maximize the dissipation is found and the sensitivity of ACCD is evaluated
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水野 毅, 高崎 正也, 石野 裕二
原稿種別: 本文
セッションID: G1000-3-1
発行日: 2010/09/04
公開日: 2017/08/01
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The controllability of gyroscopic systems is discussed based on their basic analytical models. Two rotational motions of the rotor interacts each other due to gyroscopic effects. They are usually controlled with two control inputs in totally active magnetic bearing systems. This report treats gyrosocpic systems with a single control input. The conditions are clarified under which the systems become controllable.
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佐藤 裕介, 金堂 雅彦
原稿種別: 本文
セッションID: G1000-3-2
発行日: 2010/09/04
公開日: 2017/08/01
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There are some trade-offs between fuel efficiency and noise in developing vehicle. And we face challenges about a radiation noise from engine, thus there is a growing need for reducing high frequency vibration. The aim of this study was to get the potential of control technique using the piezo actuator to generate high frequency force for reducing radiation noise from some engine cavers. The specific approach taken in this effort was first to make actuator model by changing of coordinate to making one virtual excitation point. And then, we made plant model by a new method that solved a challenge about modal controllability at excitation point. As a result we reduced radiation noise using the piezo actuator.
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岩井 知弘, 石川 慧介, 黒田 勝彦, 山崎 徹
原稿種別: 本文
セッションID: G1000-3-3
発行日: 2010/09/04
公開日: 2017/08/01
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This paper proposes a method for identifying the input power to structure in running using Experimental SEA with tracking analysis to automotive rearview mirror. Running test and chassis dynamo test were performed to identify the source of mirror vibration. As a result, it was shown that the mirror chatter vibration in high-speed running was mainly caused by the wind and the effect of mirror chatter can be described by the input power evaluated by Experimental SEA.
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