Pole Assignment Method Based on Numerical Computation with Guaranteed Accuracy

This paper presents a pole assignment method based on a numerical computation with guaranteed accuracy. By using the proposed methods, it is possible to guarantee a numerical quality about design of control system. This paper also proposes a problem which finds the best controller from a set of solutions solved by verified pole assignment method. That problem is solved by using genetic algorithms.SICE Annual Conference 2007, 17-20 Sept. 2007, Takamatsu, Japa

Platform lndependent lntegrated Environment for Simulation and Real-Time Control Experiment

This paper presents the methods which make a design process of control system easy. The real-time control framework makes writing real-time control programs easy. The framework reduces the dependency on the platform, such as OS and hardware, by using not only C but also Java. Simulation programs are transformed into Java programs, and that can execute platform independent simulation. The idea of the object model is used for the transformation of the codes. Real-time control programs are generated from simulation program automatically. Factory method pattern is used for automatic generation of real-time control programs. We develop a platform independent integrated environment for the simulation and the real-time control using above methods. The integrated environment has the facility of remote control by using distributed objects2006 SICE-ICASE International Joint Conference, 18-21 Oct. 2006, Busan, South Kore

Augmented Reality Display of Robot with Graphs of Property Response Using Its USD Model

This study proposes a method that can easily grasp the relationship between the actual machine and the graphs. In recent years, there has been a lot of research on augmented reality displays. The fields of research range from education to welfare. In the development of control systems, when evaluating the performance of a system by simulation or experiment, the results are often checked as graphs. Since the graphs are checked on a PC using CAD or other means, it is difficult to know which part of the actual machine each graph corresponds to. Therefore, we developed a tool that displays graphs in augmented reality around the actual machine through a camera on a mobile terminal. To display graphs in augmented reality, it is important to obtain the coordinates of the actual machine and display them in a location associated with the device. Therefore, a USD model with the same shape and size as the actual machine is used. This is achieved by displaying the USD model in augmented reality so that it is superimposed on the actual machine. The accuracy of the tool was also examined and its usefulness was evaluated.22nd International Conference on Control, Automation and Systems ,ICCAS 2022, November 27 - December 1, 2022, Busan, Korea (Hybrid conference

An Extension of Pantelides Algorithm for Consistent Initialization of Differential-Algebraic Equations Using Minimally Singularity

In this paper, an algorithm for index reduction of differential algebraic equations (DAE) is proposed. Pantelides algorithm has already been proposed as an algorithm for this purpose. This conventional algorithm has succeeded in reducing the calculation time required for index reduction. However, there exist some DAE systems whose index cannot be reduced correctly with the conventional algorithm. In this paper, we propose an extension of Pantelides algorithm to deal with wider class of DAE systems.The Society of Instrument and Control Engineers (SICE) Annual Conference 2020 (SICE2020), September 23-26, 2020, Chiang Mai, Thailand （新型コロナ感染拡大に伴い、現地開催中止

Potassium Concentration on Admission Is an Independent Risk Factor for Target Lesion Revascularization in Acute Myocardial Infarction

Background. Acute myocardial infarction (AMI) is accompanied by excessive production of catecholamines, which is characterized by a hypokalemic dip. A polymorphism of the adrenergic receptor has also been reported to be associated with target lesion revascularization (TLR) after coronary intervention. Subjects and Methods. We enrolled 276 consecutive patients with AMI within 24 hours of symptom onset, who underwent emergency coronary intervention using bare metal stents and had examinations over a 5-10-month follow-up period. The patients were divided into tertiles based on their serum potassium level on admission (low K, <3.9; mid K, ≥3.9, <4.3; and high K, ≥4.3). Results. Sixty-four TLRs were observed in the study. Increased potassium concentration was associated significantly with TLR. Patients in the high K group were about two and a half times more likely to have a TLR after AMI compared to those in the low K group. Multiple logistic analysis showed that potassium level on admission was an independent risk factor for TLR (odds ratio 1.69; confidence interval 1.04 to 2.74; = 0.036). Conclusions. These findings indicated that increased potassium levels on admission might predict TLRs in AMI patients treated with bare metal stents

Characteristics of late-onset spondyloarthritis in Japan: A retrospective cohort study

Spondyloarthritis may be increasingly present in older patients as life expectancy increases. We investigated clinical differences between early-onset and late-onset spondyloarthritis in Japan.We retrospectively reviewed 114 patients consecutively diagnosed with spondyloarthritis. The clinical course of each patient was observed for ?1 year. We defined early-onset and late-onset spondyloarthritis as <57 or ?57 years at a median age of this study group,respectively. We compared clinical characteristics between these 2 groups.Disease duration was significantly shorter before diagnosis in the late-onset group (P?<?.01). Inflammatory back pain (IBP) was significantly more common in the early-onset group (P?<?.01), whereas dactylitis frequency was significantly higher in the late-onset group. Significantly more patients with early-onset spondyloarthritis were human leukocyte antigen (HLA) B27-positive (P?<?.01). Articular synovitis, particularly of the wrist, was significantly more common on power Doppler ultrasound (PDUS) in the late-onset group (P?<?.01). Tenosynovitis or peritendinitis, particularly in the finger and wrist flexors were also more frequent in the late-onset group (P?<?.001 and P?<?.05, respectively). Enthesitis of the finger collateral ligament and lateral collateral ligament were significantly more common in the late-onset group (both P?<?.05). Multiple logistic regression analysis revealed that, comparatively, IBP was significantly and independently much more likely to occur in the early-onset group.The patients with late-onset spondyloarthritis had a lower frequency of IBP and HLA B27 and a higher frequency of dactylitis and PDUS findings in peripheral involvement

Ultra-low-dose estrogen therapy for female hypogonadism.

In females, endogenous estrogen secretion increases gradually before pubertal development. The benefits of low-dose estrogen therapy in patients with Turner syndrome were originally discussed by Ross et al. and Quigley et al. These seminal studies used ethinyl estradiol (EE2), starting at a dose of 25 ng/kg/d. We hypothesized that the initial dosage of estrogen could be titrated to more closely mimic physiological increments of endogenous estrogen. Therefore, our recent study initiated EE2 treatment at a dosage of 1-2 ng/kg/d, an ultra-low-dose estrogen therapy in pediatric patients with Turner syndrome. The ultra-low-dose estrogen therapy in this syndrome produced a good final height outcome but achieved suboptimal bone mineral density (BMD). In the present review, we have explained our findings to clarify the merits and demerits of this new therapy and to promote further discussion and research. This type of ultra-low-dose estrogen therapy, initiated at an early age, could be ideal for estrogen replacement in female patients with hypogonadism, such as Turner syndrome

An algorithm to modify consistent initialization of differential-algebraic equations obtained by pantelides algorithm using minimally singular subsets

In this paper, an algorithm for index reduction of differential algebraic equations (DAE) is proposed. Pantelides algorithm has already been proposed as an algorithm for this purpose. This conventional algorithm has succeeded in reducing the calculation time required for index reduction. However, there exist some DAE systems whose index cannot be reduced correctly with the conventional algorithm because it uses sufficient condition to reduce the index. We propose an algorithm to modify the solution obtained by Pantelides algorithm to deal with a wider class of DAE systems. The proposed algorithm deals with DAE systems by using the necessary and sufficient condition to reduce the index systematically that cannot be reduced by the conventional algorithm. We implemented the proposed algorithm as the functions on Maxima and evaluated the algorithm by using some examples