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Hideyoshi Yanagisawa,Kyosuke Tagashira,Tamotsu Murakami (사)한국CDE학회 2010 한국CAD/CAM학회 국제학술발표 논문집 Vol.2010 No.8
In the design of kansei quality, it is desired to extract causal relations between design attributes and the customer’s affective responses. In this paper, the authors propose a new method for extraction of logical rules consisting of combinations of design attributes that contribute to a customer’s affective judgment towards product appearance. In the method, we apply a rough set theory to derive alternatives of causal rules, and use the customer’s eye gaze features for refining the rules. We estimate two types of visual attentions (VA), i.e., a single visual attention (SVA) and a combinational visual attention (CVA), by using the proposed gaze features. To demonstrate the effectiveness of the method, we conducted a sensory evaluation experiment using a car-interior design. In the experiment, multiple participants evaluated multiple design samples by selecting from a set of words. During the experiment, we recorded the participants’ eye gaze movements as coordinates on a screen, and asked them to vocalize aloud what they were thinking. From the results, we confirmed that the estimated SVA and CVA significantly covered the vocalized thoughts and statements made in the retrospective interview. The estimated VA reduced 53% of the erroneous rules and improved the quality of the rules.
A three-dimensional investigation of mandibular deviation in patients with mandibular prognathism
Kazuaki Osawa,Hideyoshi Nishiyama,Kojiro Takahashi,Ayako Honda,Chihiro Atarashi,Ritsuo Takagi,Tadaharu Kobayashi,Isao Saito,Jun Nihara 대한악안면성형재건외과학회 2023 Maxillofacial Plastic Reconstructive Surgery Vol.45 No.-
Background Craniofacial disharmony in cases of jaw deformity associated with abnormal lateral deviation of the jaw mostly involves both the maxilla and mandible. However, it has been still difficult to capture the jaw deviation aspect in a 3-dimensional and quantitative techniques. In this study, we focused on 3-dimensional mandibular morphology and position of the condylar head in relation to the base of the skull in patients with mandibular prognathism, one of the most common jaw deformities. We used cluster analysis to quantify and classify deviation and clarified its characteristics. We also investigated the degree of correlation between those findings and menton (Me) deviation measured on frontal cephalograms, which is a conventional indicator of jaw deformity. Results Findings obtained from 100 patients (35 men, 65 women) were classified into the following three groups based on mandibular morphology and condylar position relative to the skull base. Then, reclassification using these parameters enabled classification of cluster analysis findings into seven groups based on abnormal jaw deviation characteristics. Comparison among these seven groups showed that the classification criteria were ramus height, mandibular body length, distance from the gonion to the apex of the coronoid process, and the lateral and vertical positions of the mandible. Weak correlation was also found between Me deviation on frontal cephalograms and each of the above parameters measured on 3D images. Conclusions Focusing on mandibular morphology and condylar position relative to the skull base in patients with mandibular prognathism, we used cluster analysis to quantify and classify jaw deviation. The present results showed that the 3D characteristics of the mandible based on mandibular morphology and condylar position relative to the skull base can be classified into seven groups. Further, we clarified that Me deviation on frontal cephalograms, which has been used to date, is inadequate for capturing jaw deviation characteristics.
Golam Kibria,Hiroto Hatakeyama,Hideyoshi Harashima 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.1
Multidrug resistance (MDR), the principalmechanism by which many cancers develop resistance tochemotherapy, is one of the major obstacles to the successfulclinical treatment of various types of cancer. Severalkey regulators are responsible for mediating MDR, aprocess that renders chemotherapeutic drugs ineffective inthe internal organelles of target cells. A nanoparticulatedrug delivery system (DDS) is a potentially promising toolfor circumventing such MDR, which can be achieved bytargeting tumor cells themselves or tumor endothelial cellsthat support the survival of MDR cancer cells. The presentarticle discusses key factors that are responsible for MDRin cancer cells, with a specific focus on the application ofDDS to overcome MDR via the use of chemotherapy ormacromolecules.
2 Dimensional Voltage Distribution Measurement of YBCO Thin Film during S/N transition
Mori, Masato,Nishioka, Hideyoshi,Baba, Jumpei,Nitta, Tanzo,Kumagai, Toshiya,Shibuya, Masatoyo The Korean Institute of Electrical Engineers 2011 The Journal of International Council on Electrical Vol.1 No.2
The process of the resistance generation in a YBCO thin film during the S/N transition used in resistive type fault current limiters has not been clarified completely. During the process, a thin film may be broken by overheat. Understanding the process of the resistance generation would lead to prevent thin films from this burnout. In this paper, the voltage distribution of a YBCO thin film during the S/N transition is measured by probes arranged 2 dimensionally on a thin film to understand how the normal transition area on a YBCO thin film expand. The voltage probes are placed in a matrix of 3 times 10 on a 30-by-210 millimeter YBCO thin film. A sinusoidal wave current whose amplitude is several hundreds ampere flows into the thin film connected with a parallel resistance. It is observed from these measurements that a narrow normal conducting state band vertical to the current appears first, and this band expands along the current. The critical current of the area on the thin film where the normal conducting state band appears first is the lowest along the thin film. This band is considered to have a great influence on the resistance generation of the YBCO thin film.
Rotating Choke and Choked Surge in an Axial Pump Impeller
Watanabe, Toshifumi,Sato, Hideyoshi,Henmi, Yasuhiko,Horiguchi, Hironori,Kawata, Yutaka,Tsujimoto, Yoshinobu Korean Society for Fluid machinery 2009 International journal of fluid machinery and syste Vol.2 No.3
Unlike usual turbopump inducers, the axial flow pump tested operates very stably at design flow rate without rotating cavitation nor cavitation surge. Flow visualization suggests that this is because the tip cavity smoothly extends into the flow passage without the interaction with the leading edge of the next blade. However, at low flow rate and low cavitation number, choked surge and rotating choke were observed. Their correlation with the performance curve under cavitation is discussed and their instantaneous flow fields are shown.