"ROSAI" hospital, Wakayama City in Japan, reported that inpatient's bed-downfall is one of the most serious accidents in hospital at night. Many inpatients have been having serious damages from downfall accidents from a bed. To prevent accidents, the hospital tested several sensors in a sickroom to send warning-signal of inpatient's downfall accidents to a nurse. However, it sent too much inadequate wrong warning about inpatients' sleeping situation. To send a nurse useful information, precise automatic detection for an inpatient's sleeping situation is necessary. In this paper, we focus on a clustering-algorithm which evaluates inpatient's situation from multiple angles by several kinds of sensor including night-vision CCD camera. This paper indicates new relief algorithm to improve the weakness about exceptional cases.
It is important to know mechanical properties of micro structures fabricated as a micro machine component by micro-stereolithgraphy(mSL). We developed new measurement equipment and measured Young's modules of micro cantilevers fabricated by mSL. Sample micro cantilevers were formed by changing irradiation laser power of mSL system and postcure processing time. We put load on the sample cantilever, then measured the relation between load and deflection of the cantilever. The young's modules of samples were calculated from the gradient of measured Load-Defection relation and the formula of strength of material. As the result, the young's module of cantilever made by mSL is depended on irradiation laser power. And the value increases by postcure which makes progress of un-cured part polymerization in the cantilever. Although the increased values are also depended on irradiate laser power.
The Japanese forestry industry has been significantly affected by the increase in low-price timber imports and a diminishing work force. This has had a direct impact on the level of maintenance of the coniferous forests. In this paper, we examine the development of local domestic energy supply schemes in conjunction with effective forest maintenance plans based on data from Landsat/TM imagery. We examined regions in which coniferous forests experienced various levels of blight and to investigated the introduction of energy supply systems using such forests. Both sound and blighted coniferous forests were examined and the characteristics of each area quantified. The supply of energy to a small town using a local blighted coniferous forest was examined. It is estimated that the use of existing wood burning technologies and an effective forest maintenance plan would result in the supply of power to 30% of the households in the town.
We investigated the relations between leaf-air temperature and photosynthetic ratio of cherry trees in order to obtain the fundamental data for applying the biological information to the remote sensing system. Some branches of Prunus jamasakura were cut and put into the water pot prompt once per month from May to October 2001. We measured the surface temperature of ten leaves and photosynthetic ratio every five second for ten minutes every measurement air temperature condition at 20, 25, 30 and 35°C with 1000 PAR light intensity. Result as, there was recognized the small significantly relation between leaf temperature and photosynthetic ratio because leaf temperature is usually changed with air temperature. Although, there was recognized large significantly correlations between the difference of the leaf temperature and air temperature and photosynthetic ratio. It is thought that transpiring in healthy plants are active for absorption of water and it cause to drop the leaf temperature. This research showed that the health of cherry trees could be diagnosed for measurement of the difference of leaf and air temperature.
Environment preservations of the forest become world-widely close-up. The remote sensing technologies by satellite have been used for observation of the forest. However, the observation system on the ground is also needed because the remote sensing by satellite is seriously hindered by atmospheric phenomena and detailed data are necessary for precise analysis of the state of forest. Therefore we developed a multispectral infrared camera system for plant healthiness monitoring. The infrared camera system has five infrared bandpass filters. A hue is defined from the five infrared images. We performed several experiments to confirm that the hue changes according as the plant healthiness decline. In this paper, we propose a plant healthiness evaluation method by detecting hue changes with time. Experimental results of observation of hue changes of a plant through a day using the multispectral infrared camera system are shown. The results show that hue in healthiness parts of plants are more stable than in weak parts when the circumambient conditions such as the sunshine condition are changed.
When we do aerial photography and an environmental research, a remote control helicopter (R/C helicopter) is excellent tool in the next point. For example, the cost of aerial photography and an environmental research work by R/C helicopter are low, also R/C helicopter pilot reservation fee are low price, and free from aviation law in Japan. But, R/C helicopter maneuvering and aerial photographing skills are necessary, and these are difficult to learn. Additionally, if the visibility of R/C helicopter is getting bad when it goes far away, operation is getting difficult. These problems are caused by the badness of autonomous stability on R/C helicopter system. In this study, we propose a new angle detection sensor for 3 axial rotations which is based on the development of the easy and safe steering system for the operation person.
We review applications of photopolymerization and photodamage by tightly focused picosecond and femtosecond pulses for the formation of three-dimensional structures. Laser microfabrication of various structures, like surface gratings, 3D optical memory, 2D and 3D photonic crystals, 3D microfluidic systems, etc., are described. Microfabrication by laser irradiation provides new opportunities to realize microstructures and microdevices, highly demanded in a number of fields, e.g., microchemistry, information storage, and photonics. The background of this technique is very simple, and relies on modification of materials by intense, strongly focused laser irradiation. In this highly spatially localized region, the material may become destroyed, solidified from liquid, or otherwise photomodified, and complex structures can be formed from many photomodified regions. Below, we describe techniques, applications, and achievements of laser microstructuring in liquid resins and solid silica glasses.
Environment preservations of the forest become world-widely close-up. The remote sensing technologies have been used for observation of the forest. However, the remote sensing by satellite is seriously hindered by atmospheric phenomena and cannot get the detailed data, which are necessary for precise analysis of the state of forest. So the observation system on the ground is needed. In this paper, we develop a multispectral infrared camera system to investigate the continuous spectra of mid-range infrared whose wavelengths cover around 3000nm to 5000nm. We define hue value in the case that the number of primary image is more than three. An algorithm to calculate the hue value from multispectral infrared images is proposed to obtain spectrum change of plants. An experiment of observation using the multispectral infrared camera system when the plant is growing week from cutting water off is shown.
We demonstrate in this paper a fabrication of three- dimensional microstructures using photopolymerization of resin by two-photon absorption. When a tightly focused laser beam was scanned in a light-curling liquid, solidified rods were formed following the trace of the scanning. If the solidification was arranged to occur along the frame of a microstructure, a designed spatial pattern would be transformed into material object. Due to a quadratic dependence of photopolymerization rate on the laser pulse energy, the size of solidified voxels was controlled down to submicrometer order. Infrared transmission measurement exhibited pronounced band gap effects from thus-fabricated photonic crystal structures.