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Real-space Imaging of Ferroelectric and Structural Antiphase Domains in Hexagonal YMnO<sub>3</sub>
Keisuke Kobayashi,Hideki Kamo,Kosuke Kurushima,Yoichi Horibe,정상욱,Yoshihiko Togawa,Shigeo Mori 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.7
A high-angle annular-dark-field (HAADF) imaging technique was applied to the investigation of domain wall structures in the ferroelectric phase of hexagonal manganites, YMnO<sub>3</sub>, on an atomic scale. The displacements of the Y<sup>3+</sup> ions along the [001] direction can be clearly visualized. The ferroelectric dipole moments are revealed to be caused by the opposite and unequal displacements of Y<sup>3+</sup> ions. Two types of domain walls should be identified in the ferroelectric domain structures. One is charged longitudinal domain walls with head-to-head or tail-to-tail configurations and the other is non-charged transverse domain walls with head-to-tail configurations. In addition, the ferroelectric and the structural antiphase domains in YMnO<sub>3</sub> change into fragmentary domains because of substitution of Ti<sup>4+</sup> for Mn<sup>3+</sup>, and ferroelectric nanodomains with sizes of 10 - 20 nm are found in the x = 0.30 compound.
Integrated Production Planning and Scheduling Using Backward/Forward Scheduling Simulation
Shinji Hirano,Shigeo Kobayashi,Toru Eguchi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper deals with release time planning to reduce lead times of jobs in make-to-order productionenvironments. In traditional MRP-based planningsystem, lead times are estimated using historical data and pastexperience without precisely considering capacity constraints.The proposed method in this paper is based on precisebackward and forward scheduling simulation. First, backward simulation in which simulation starts at each due date ofjob and sends it through the shop floor based on the backward sequence of its part routing is applied. Next, forwardsimulation is applied to modify the release times obtained by backward simulation. A genetic algorithm is also used tominimize lead times of jobs in the final step. Numerical experiments of planning and scheduling with processing timeuncertainty are carried out to examine the effectiveness of the proposed method.
매립지에서 벤토나이트와 blast-furnace 슬래그 혼합물에 의한 점토성 불투수층에 관한 구조물의 입증실험
( Isamu Norimatsu ),( Fuminori Hirosue ),( Shigeo Kobayashi ),( Ikuo Fujii ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2
수명이 얼마 남지 않은 구 매립지의 대안으로, 새로운 매립지를 설치하는 것은 종종 지역 주민들과 문제를 야기할 수 있다. 환경 생태나 업무 활동에서 장애물이 항상 쉽게 극복되는 것은 아니다. 매립지의 안전성에 대한 사람들의 불신에서 기인하기 때문에, 영구적인 안전성이 보장되기 위한 더 나은 매립지에서의 발달된 기술이 시급하다. 차수층을 활용하는 매립지를 건설한 때, 차수층 아래에, 노출된 토양은 분쇄된 blast-furnace 슬래그와 벤토나이트를 혼합한 것으로 환경에 오염물질이 노출되지 않도록 차수층으로써 역할을 하도록 경화시키기 위해 놓아둔다. 이처럼 매립지에는 고도로 안전한 새로운 기술이 개발되고 입증되고 있다. Establishing new disposal sites, as an alternative for the old ones with the life-long remained short, is often troublesome with local residents. Obstacles in eco-living and business activities are not always easily overcome. Due to recent unreliable feeling of people on the safety of disposal sites, it is urgently required to develop technology for better disposal sites in order to ensure their permanent safety. During construction of a disposal site with utilizing water-proof sheets, below the sheet, the exposed soil is mixed with pulverized blast-furnace slag and bentonite, then left for hardening to serve as a water-proof soil layer, which can stop propagating contamination to the outside environment. Such a new technology for highly safety disposal sites has been developed and proven.
( Isamu Norimatsu ),( Fuminori Hirosue ),( Shigeo Kobayashi ),( Ikuo Fujii ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.1
Establishing new disposal sites, as an alternative for the old ones with the life-long remained short, is often troublesome with local residents. Obstacles in eco-living and business activities are not always easily overcome. Due to recent unreliable feeling of people on the safety of disposal sites, it is urgently required to develop technology for better disposal sites in order to ensure their permanent safety. During construction of a disposal site with utilizing water-proof sheets, below the sheet, the exposed soil is mixed with pulverized blast-furnace slag and bentonite, then left for hardening to serve as a water-proof soil layer, which can stop propagating contamination to the outside environment. Such a new technology for highly safety disposal sites has been developed and proven.
Tsuru Takamitsu,Tsujimura Akira,Mizushima Kazuhiko,Kurosawa Makoto,Kure Akimasa,Uesaka Yuka,Nozaki Taiji,Shirai Masato,Kobayashi Kazuhiro,Horie Shigeo 대한남성과학회 2023 The World Journal of Men's Health Vol.41 No.1
Purpose: Although patients with late-onset hypogonadism (LOH) often experience lower urinary tract symptoms (LUTS), LUTS are not generally included in LOH symptoms. No study has examined the direct relation of the Aging Males Symptoms rating scale (AMS) and the International Prostate Symptom Score (IPSS) with the quality of life (QOL) index. We analyzed the relation between the IPSS and QOL index and various factors including the AMS in patients with LOH syndromes. Materials and Methods: This study comprised 1,688 men with LOH symptoms who visited our hospital or affiliated clinic. Factors associated with the IPSS were assessed in terms of age, scores of several questionnaires including the AMS, endocri-nological variables, and serum concentration of PSA. Among these same factors, those associated with the QOL index were also evaluated. Finally, the same analyses were repeated in 187 patients with low serum testosterone concentration (<3.0 ng/mL). Results: In a multivariate analysis using the significant items from the univariate analysis, AMS, age, and Erection Hard-ness Score correlated significantly with the IPSS. A trend analysis using items other than the AMS as adjustment factors also confirmed the relationship between an increase in QOL index and an increase in AMS. Similar results were obtained in the analysis of patients with low serum testosterone concentration. Conclusions: We revealed that the relation of IPSS with the QOL index for LUTS is closely associated with the AMS for LOH, regardless of testosterone level. When patients complain of LOH symptoms, a careful, detailed inquiry into LUTS is required.