Assessment of Food Education by Urinalysis

Abstract“The Basic Law on Shokuiku (Food Education)” (Shokuiku Kihon Hou) was enacted in 2005 in Japan. First, we examined the relationship of Na/K ratio in the first morning spot urine (SU) with the ratio of 24-hour urine (24U) samples from 54 elementary school children, and confirmed Na/K ratios in the SU and the 24-U samples were correlated significantly. Next, we conducted 6 times the variety of Food Education Program (FEP), to encourage 34 boys and girls aged 7 to 12 to eat more Japanese traditional food items such as soy, sesame, seaweed, vegetable, fish, mushroom and potato, daily. And we checked the change of sodium (Na) / potassium (K) of SU samples collected 3 times before, after and in the midst of FEP to investigate the effect of FEP on Na/K of morning SU in elementary school children. The Na/K was decreased significantly in the 2nd and the 3rd SU from the baseline level. We confirmed the FEP's effect on the children's dietary behaviour not only from the questionnaire but also from the significant changes in Na/K of SU. In conclusions, the FEP collecting SU samples to check Na/K is expected to be a good method to estimate the effect of FEP on dietary behaviour

Theory of quasiballistic transport through nanocrystalline silicon dots

A model to describe the underlying physics of high-energy electron emission from a porous silicon diode is presented. The model is based on an atomistic tight-binding method combined with semiclassical Monte Carlo simulation. It well reproduces essential features of experimental findings. An initial acceleration region is shown to play a crucial role in generating quasiballistic electron emission

Some Classes of Convergent Interval Matrices

Some classes of interval matrices for which a necessary and sufficient condition can be obtained in a simple form are indicated. A few sufficient conditions are also derived to assure convergence of interval matrices. Some of these results are discussed in association with their polynomial counterparts

Automated eye disease classification method from anterior eye image using anatomical structure focused image classification technique

This paper presents an automated classification method of infective and non-infective diseases from anterior eye images. Treatments for cases of infective and non-infective diseases are different. Distinguishing them from anterior eye images is important to decide a treatment plan. Ophthalmologists distinguish them empirically. Quantitative classification of them based on computer assistance is necessary. We propose an automated classification method of anterior eye images into cases of infective or non-infective disease. Anterior eye images have large variations of the eye position and brightness of illumination. This makes the classification difficult. If we focus on the cornea, positions of opacified areas in the corneas are different between cases of the infective and non-infective diseases. Therefore, we solve the anterior eye image classification task by using an object detection approach targeting the cornea. This approach can be said as "anatomical structure focused image classification". We use the YOLOv3 object detection method to detect corneas of infective disease and corneas of non-infective disease. The detection result is used to define a classification result of a image. In our experiments using anterior eye images, 88.3% of images were correctly classified by the proposed method.Comment: Accepted paper as a poster presentation at SPIE Medical Imaging 2020, Houston, TX, US

Stability Robustness Conditions for Control Systems with Bounded and Unbounded Nonlinear Gain Elements

Taking the stability robustness into account in every aspect is a current trend in control theory. However, major recent efforts have been focused on the stability robustness of linear control systems, and so, results for nonlinear systems seem to be few. In this respect, we will make several attempts to cope with stability problems for control systems having bounded or unbounded nonlinear gain elements. We consider two tpyes of Lyapunov functions : L₂ type functions, i.e., quadratic functions and L₁ Type ones. The former is used to show the stability of systems with bounded gain elements and the latter for systems with unbounded gain characteristics. The existence of such functions assures robust stability for these nonlinear systems against perturbations in the nonlinear gain elements

温帯林における木本性ツル植物の生活史戦略としてのクローン繁殖の役割と分布パターンへの影響

この博士論文は内容の要約のみの公開（または一部非公開）になっています筑波大学 (University of Tsukuba)201

温帯林における木本性ツル植物の生活史戦略としてのクローン繁殖の役割と分布パターンへの影響

学位論文全文のタイトルは以下のとおり (to → on)The Role of Clonal Reproduction as a Life History Strategy and its Contribution on the Distribution Patterns of Liana Species in a Temperate Forest筑波大学 (University of Tsukuba)201