In disaster evacuation centers, it is difficult for operators to notice minor stresses experienced by users. Therefore, we aim to construct a system to estimate stress from users' behavior and personality trait. This paper aims at the construction of an experimental system to construct a personality trait, behavior and stress model for stress estimation. As a result of the experiment, it was suggested that the positional relationship between subjects, personality traits, and HRV had a certain relationship. The experimental system is considered to be useful for constructing personality trait, behavior and stress models.

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In this paper, we discuss the Phalacrocorax carbo recognition system that we have developed. Phalacrocorax carbo is known as harmful bird in Japan. In recent years, many researchers have been studying to eliminate this harmful bird using drone. However, they had to control the drone manually. There was a problem that could not be dealt with without a good pilot. Our research group aims to develop a system that automatically recognizes these harmful birds using drone. One of deep learning, YOLO is used as a recognition method. The recognition rate has been improved by learning the 3D shape of the bird. To create the 3D model, we use an application called Smoothie-3D. Data augmentation was realized by preparing many two-dimensional learning images from the 3D model. As a result of the recognition experiment using Phalacrocorax carbo images, the fit ratio was precise at 98% or more. The precision of the recognition rate also more than 91%. From these results, we have realized the based system for automatic harmful bird elimination system using drone.

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A grid pattern laser light, a half mirror, a projection plate in front side and a projection plate in back side are used in this measurement method. The grid pattern laser light is reflected on the mirrored flat surface of a measured object. The reflected grid pattern laser light is projected on the projection plate in front side and the projection plate in back side through the half mirror. There is a vertex through two laser lines in the projected grid pattern laser light. There are two vertexes corresponding to both the projection plate in front side and the projection plate in back side. A slope of the mirrored flat surface is calculated from a laser trajectory through the two vertexes. A range of the mirrored flat surface is calculated from the calculated slope and other laser trajectories.

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A water rocket is a rocket system that obtains thrust by injecting water with compressed air at high pressure and is usually manufactured using a pressure-resistant plastic bottle. It is compact and easy to manufacture, but technical elements and principles contained in water rockets are in common with the actual rocket system, and it is an appropriate system as a teaching material for science education and research. Since the rocket is a flying object, it is necessary to pay attention to the safety at launch and to set up the aircraft structure that stable flying even if made by anyone. For that purpose, numerical analysis of the flight trajectory to evaluate flight characteristics and quantitative analysis on flight stability are important. However, there are many empirical factors such as basic aerodynamic data required for orbital analysis and guidelines for aerodynamic design / structural design, which are important in achieving stable flight. In this research, we developed "Dynamics Simulation System" based on dynamic consideration and numerical calculation program on the flight distance, and analyzed the optimum flight conditions to obtain the flight stability. Based on the analysis results, by applying "Robust Design", factors which influence the flight stability with flight distance as the evaluation characteristic value are extracted, and approached the optimization of robustness flight conditions.

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This R&D aims to collect and separate aluminum-containing waste materials (general waste and industry waste), and recover highly-pure aluminum by the efficient dry distillation process. By using the cartridge system (containing the aluminum and reactant), hydrogen energy is generated, and electric power is generated by fuel cell for variety of applications. This system contributes the improvement of aluminum material flow and provides low-carbon solutions. PCR (pulper continual reject) Pulper system could separate aluminum-rich material from the paper-based waste. It was possible to find the condition to recover aluminum and pulp by establishing the model which predicted time to separate aluminum and pulp from the paper-based waste with aluminum.

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Movement of an optical component such as a mirror or a beam splitter glued by Ultraviolet (UV) curable adhesive on a metal plate has been investigated by using phase-shifting digital holography. When the optical mirror cube is glued on the metal plate under the illumination of UV-LED light beam, interference fringes produced by the reference wave and the reflected wave from the mirror surface are recorded sequentially as hologram over a period of time and movement of the mirror cube is analyzed from the phase difference of two successive reconstructed complex amplitudes of the reflected waves. The movement of the mirror cube in the hardening process of UV curable adhesive has been followed. It is shown that the movement of the mirror cube can be analyzed by using both the magnitude and the orientation of the vector normal to the displacement of the mirror detected by digital holographic interferometry. Experimental analysis is conducted with a constant UV light intensity. Correlation between the orientation of UV light illumination and the movement of the mirror cube obtained by digital holography is discussed in this paper.

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Recently, chemometrics, which is also attracting attention in Japan, is attracting attention as a method for solving various problems in the chemical field by combining mathematical science, statistics, machine learning, pattern recognition, etc. . Even in the field of food science, research is being carried out as a method for finding out result connected to quality control methods from amount of chemical composition analysis. on the other hand, research has not been conducted on quality control methods focusing on the chemical components contained in the meat products themselves, and research has been limited to the inorganic components in meat products and the characteristics of meat products by lipid measurement. In this study, focusing on beef products, it aims to establish simple quality control method that contributes to taste, freshness evaluation, and safety requirement. Therefore, we considered that it is useful to measurement at a low cost using chemical component value involved in beef products. Additionally, these methods with chemometrics method (discriminant analysis and analysis of variance) optimized. As a result, it was possible to identify chemical components contributing to the classification condition of beef products.

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We have developed an online measurement system for machining tools. The measurement system measures the profile of a workpiece on the machining stage using a camera. This paper presents edge detection methods for the profile measurement. We evaluate some methods to measure a diameter of a circle shape and propose a sub-pixel method which is robust for ambient light fluctuations and reduces measurement variations dependent on operators

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A sensing vest is a wearable interface and a haptic interface. A person in the sensing vest feels the presence or absence of an object behind the person by haptic sense of back. The sensing vest is composed of a ranging and vibrator module, a vest and a band to wear the person. The module is composed of a 1D range sensor, a controller and a vibrator. The direction of ranging in the sensor is perpendicular to a vibration plane of the vibrator. The vibration plane contacts with the skin surface. The module can transmit the vibration to haptic sense as a function of the presence or absence of the object in the normal direction of the skin surface of back. One module is located on the back side of the sensing vest. The structure, the mechanism and the design condition of the module and the sensing vest were shown. The module and the sensing vest composed of the module were made. A condition of contact with the vibration plane and the skin surface was checked. The frequency of the vibration was measured. The vibration or non-vibration of the module was checked at the object behind the person.

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The purpose of this research is to generate electric power from aluminum-containing waste materials. Aluminum of high purity is recovered using dry distillation technology from aluminum-containing waste, is reacted with sodium hydroxide aqueous solution, and hydrogen is generated. The generated hydrogen is supplied to fuel cell in order to generate electric power. The cartridge system consist of hydrogen generating device and fuel cell unite is used for variety of applications. Prototype dry distillation system was upgraded so that dry distillation process became simpler, from two-staged process to single-staged system. The simulation showed that by using the heat energy from generated distillation gas and tar, dry distillation process could be self-sustained when the reactor reached the stable operation condition.

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This R&D aims to collect and separate aluminum-containing waste materials (general waists and industry waists), and recover highly-pure aluminum by the efficient dry distillation process. By using the cartridge system (containing the aluminum and reactant), hydrogen energy is generated, and electric power is generated by fuel cell for variety of applications. This system contributes the improvement of aluminum material flow and provides low-carbon solutions. Long-operation (3hours) system with output of 100W was developed and tested by the real-world condition. By introducing feedback mechanism, system pressure could be self-controlled, and system safety could be improved. As the result that the gas analysis of generated hydrogen was conducted, it was found that impurities of hydrogen gas had almost no influence on the performance of fuel cell.

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This R&D aims to collect and separate aluminum-containing waste materials (general waists and industry waists), and recover highly-pure aluminum by the efficient dry distillation process. By using the cartridge system (containing the aluminum and reactant), hydrogen energy is generated for variety of applications. This system contributes the improvement of aluminum material flow and provides low-carbon solutions. In this paper, in order to control the hydrogen pressure in reactor vessel, the simple method without electronic control technology such as feedback control was proposed. This method could control the hydrogen pressure in reactor vessel by adjusting reaction liquid level using pressure regulating vessel. Moreover the performance of the prototype using pressure control method was evaluated, it was found to be able to control the pressure.

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This R&D aims to collect and separate aluminum-containing waste materials (general waists and industry waists), and recover highly-pure aluminum by the efficient dry distillation process. By using the cartridge system (containing the aluminum and reactant), hydrogen energy is generated for variety of applications. This system contributes the improvement of aluminum material flow and provides low-carbon solutions. In this paper, relation between concentration of NaOH and hydrogen generation rate was researched. It was found that 4% NaOH was optimum for hydrogen generation rate. Moreover the effect of inorganic salts on hydrogen generation was researched. As for the result, it was clarified that reaction liquid with FeSO4 could promote hydrogen generation.

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In this paper, the broadband low ripple digital PLL (phase locked loop) circuit using clock generator with frequency follow-up control was constructed by utilizing the fact that the capture range of digital PLL becomes scalable when changing the frequency of the basic clock generator. The modeling and analysis are done on dynamical system simulator. This digital PLL has achieved tracking frequency range of 10 Hz to 10 kHz and proven that the phase error ripple can be controlled as designed.

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To develop the high performance water turbine for the small hydroelectric power generator, we suggest the some flow guides set inside the straight Darrieus water turbine. The guides shape the cylindrical or ellipsoidal column. When the tip speed ratio λ is below 1.0, the power coefficient CP of the water turbine with the cylindrical or ellipsoidal guide is larger than that of the turbine without any guides. Then the cylindrical guide shows the highest CP and the ellipsoidal guides which be set the suitable angle shows comparable CP to that of the cylindrical guide. When the λ is above 1.0, the CP of the turbine with cylindrical guide is smaller than that of the turbine without any guides. Then the CP of the turbine with the ellipsoidal guides which have the suitable oblateness and be set the suitable mounting angle are larger than that of the turbine without any guides. Hence, the ellipsoidal guides will be able to rise the CP in wide range of λ.

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The performance improvement of the straight Darrieus water turbine has been needed to practical use for the small hydroelectric generator. Especially in a narrow channel, we suggested the setting the deflector (flat rectangular plate) at upstream of the turbine. To examine the performance improvement effect, we performed the torque measurement experiments and three dimensional numerical simulation of flow. All tested deflectors caused the change of the flow pattern compared to the without deflector. As results, it was clear that the most suitable aperture ratio (The aperture width divided by the channel width) is 60 % and the most suitable setting angle is 90 deg.

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Nowadays, smartphones spread rapidly and we see a lot of persons’ “walking while on the phone”. According to this, accidents caused by “walking while on the phone” have been increasing. Especially, accidents that a pedestrian walking on the station platform falls into a railroad track occur because a pedestrian’s “walking while on the phone” bumps into him/her. Thus, it is needed to measure the pedestrian’s eye gazing data that walking while on the phone on the station platform and analyze it. In this paper, we show the result of an experiment about measuring a subject’s eye gazing characteristics walking while on the phone on the station platform and analysis. As a result, it is found that the gazing area gets to narrow and transit to the downward direction, and it is difficult to see and conceive the subjects’ around environment.

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The Metropolitan Police Department reported that the majority of traffic fatalities were elderly. It is show that there are many traffic accidents while walking. In this study, we evaluated the visual cognitive function of 28 elderly people using a simulated road crossing task using a head-mounted display for the purpose of preventing accidents that occurred while the elderly were walking. In addition, walking speed and locomotive syndrome were also used for physical function evaluation. As a result, 18 subjects (64.3%) were able to cross safely when estimated based on walking speed. We believe that this approach can contribute to traffic safety.

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