1,827 research outputs found
Data for: ROSA/LSTF test and RELAP5 code analyses on primary feed-and-bleed operation during total loss-of-feedwater transient of PWR
No full textExperimental data with the LSTF (large-scale test facility) and calculated results by RELA5/MOD3.3 code, used to support the findings of this study, are available from the corresponding author (Takeshi Takeda) upon request
Ebalia tuberculosa
No full textEbalia tuberculosa (A. Milne-Edwards, 1873) (Fig. 6M) Persephona tuberculosa A. Milne-Edwards, 1873: 86. Ebalia tuberculosa.— Miyake 1983: 59, pl. 20, fig. 1.— Takeda 1997: 237.— Ikeda 1998: 27, fig. 5.— Takeda 2001: 228.— Komatsu & Komai 2009: 603. Material examined. MFM 145612 and seven other referred specimens. Remarks. One complete carapace and seven fragments were collected. The extant specimens live at 50–550 m depth in the Into-West Pacific region (Takeda 2001).Published as part of Ando, Yusuke, Kawano, Shigenori, Muramiya, Yusuke, Niiyama, Sota, Kameyama, Sohiko & Shimoyama, Shoichi, 2020, Fossil decapods from the Upper Quaternary in Shinjima Island in Kagoshima Kyushu, Japan, and description of a new species of ghost shrimp (Axiidea Eucalliacidae), pp. 523-541 in Zootaxa 4878 (3) on page 532, DOI: 10.11646/zootaxa.4878.3.5, http://zenodo.org/record/442538
有限密度グロス-ヌーボー模型のグラスマンテンソルくりこみ群
No full text博士論文本文Full 以下に掲載：Progress of Theoretical and Experimental Physics 2015(4) pp.043B01-1-043B01-16 2015. 日本物理学会. 共著者：Shinji Takeda, Yusuke Yoshimur
Adaptive Ground Clearance Control for Preparation for Fall in a Wearable Assistive Device
No full textReducing the risks of falls is one of the main tasks for walking assistive devices. Some elderly people who fear falls tend to lower the distance between the ground and the support tip of the assistive device (ground clearance), but it is very easy to obstruct their walking and also not good for their health by always providing support because they lose the opportunities to use their muscles. However, if the ground clearance is too large, the risk of falls would also increase. In this paper, we introduced the concept of adaptive ground clearance to adjust the ground clearance dynamically during walking so that the assistive device can always prepare for falls. First, the ground reaction forces on two feet are modeled based on the symmetry walking assumption. Thus, the vertical motion on the hip during walking can be estimated. Second, a wearable device prototype was built according to the information about hip vertical displacement. Finally, a PID position control method was implemented on the prototype, using a low-cost distance sensor to enable real-time ground clearance adjustment. This work may inspire the design of rollators and walkers to reduce the reaction time and to prepare for falls
Tymolus uncifer
No full textTymolus uncifer (Ortmann, 1892) (Figs. 5B, C) Cyclodrippe uncifera Ortmann, 1892: 560. Tymolus uncifer.— Balss 1922: 286.—Karasawa 1993: 43, pl. 6, fig. 4.— Takeda 1997: 232.— Karasawa 1997: 41, pl. 8, fig. 10.— Ikeda 1998: 21, pl. 5, figs. 1–3. –– Takeda 2001: 223.— Spiridonov & Türkay 2007: 6–7, figs. 4D–E.— Kitamura & Shiba 2008: 15.— Komatsu & Komai 2009: 598, fig. 3F. Material examined. MFM 145610, MFM 145611 and five other referred specimens. Remarks. Although MFM145610 lacks the rostrum and six other specimens are chelipeds, their features match those of Tymolus uncifer (Ortmann, 1892). The fossil specimens are known from the Lower Pleistocene Soga and Hijikata formations of Kakegawa Group (Karasawa 1993, 1997; Kitamura & Shiba 2008). The extant species is known around Japanese coasts (e.g., Takeda 2001; Spiridonov & Türkay 2007).Published as part of Ando, Yusuke, Kawano, Shigenori, Muramiya, Yusuke, Niiyama, Sota, Kameyama, Sohiko & Shimoyama, Shoichi, 2020, Fossil decapods from the Upper Quaternary in Shinjima Island in Kagoshima Kyushu, Japan, and description of a new species of ghost shrimp (Axiidea Eucalliacidae), pp. 523-541 in Zootaxa 4878 (3) on page 532, DOI: 10.11646/zootaxa.4878.3.5, http://zenodo.org/record/442538
Podocatactes hamifer Ortmann 1893
No full textPodocatactes hamifer Ortmann, 1893 (Fig. 5D) Podocatactes hamifer Ortmann, 1893: 29, pl. 3, fig. 1.— Miyake 1983: 74, pl. 25, fig. 5.—Karasawa 1993: 47–48, pl. 9, fig. 1.— Takeda 1997: 242–243.— Karasawa 1997: 43, pl. 9, fig. 9.— Ikeda 1998: 37, pl. 44, figs. 1–3.— Takeda 2001: 243.— Kitamura & Shiba 2008: 15.— Komatsu & Komai 2009: 598, fig. 3E.—Schweitzer & Feldman 2019: 13, fig. 9.4. Material examined. MFM 145618 and one other referred specimen. Remarks. The present specimens lack the rostrum, but features of the carapace match with those of Podocatactes hamifer Ortmann, 1893. Fossil specimens are known from the Lower Pleistocene Soga and Hijikata formations of Kakegawa Group (Karasawa 1993, 1997; Kitamura & Shiba 2008). Extant specimens are known from the lower sublittoral zone to bathyal zone around Japanese coasts (e.g., Takeda 2001).Published as part of Ando, Yusuke, Kawano, Shigenori, Muramiya, Yusuke, Niiyama, Sota, Kameyama, Sohiko & Shimoyama, Shoichi, 2020, Fossil decapods from the Upper Quaternary in Shinjima Island in Kagoshima Kyushu, Japan, and description of a new species of ghost shrimp (Axiidea Eucalliacidae), pp. 523-541 in Zootaxa 4878 (3) on page 535, DOI: 10.11646/zootaxa.4878.3.5, http://zenodo.org/record/442538
有限密度グロス-ヌーボー模型のグラスマンテンソルくりこみ群
No full text金沢大学博士（理学）博士論文本文Full 以下に掲載：Progress of Theoretical and Experimental Physics 2015(4) pp.043B01-1-043B01-16 2015. 日本物理学会. 共著者：Shinji Takeda, Yusuke Yoshimuradoctoral thesi
Kinematic Design and Analysis of a Wearable End-Effector Type Upper Limb Assistive Robot
No full textA novel wearable end-effector type upper limb assistive robot for stroke hemiplegic patients is proposed, and a 3 DOF 4R-5R parallel mechanism for this type of robots is presented. Assistive functions of the robot are finalized to motion and force assistance to allow patients to have their paralyzed limb perform auxiliary roles in ADL. Kinematics of this mechanism, including joint configuration and placement of three active joints, is presented, followed by displacement analysis and workspace analysis. Motion of the proposed mechanism is confirmed by an experimental prototype
Design and Preliminary Testing of WELiBot: A Wearable End-Effector Type Upper Limb Assistive Robot
No full textA full-scale prototype of a 3-DOF 4R-5R parallel mechanism for a wearable end-effector type upper limb assistive robot called "WELiBot" is fabricated. Owing to its kinematic structure, it can assist the user's upper limb in motions where the generation of vertical force and constrain along/on certain geometries are required. EMG measurements were collected from a healthy person as a preliminary evaluation prior to clinical trials with hemiplegic patients. Muscle activities of the person's upper limb were measured for the cases with and without assistance, and the results were compared. The results show that when the robot-assisted the arm-raising motion, activity in specific muscles of the upper arm and forearm decreased significantly. This confirmed the effectiveness of the motion assistance by the robot. On the other hand, no decrease in activity was observed in the shoulder muscles
Skelosophusa prolixa Ng and Takeda 1994
No full textRemarks on Skelosophusa prolixa Ng and Takeda, 1994 (Fig. 4) The first author discovered five specimens from northern Madagascar in the unidentified collection of the NHM (NHM 2009.119, NHM 2009.120 -121, NHM 2009.122, NHM 2009.123, NHM 2009.124) that proved to belong to Skelosophusa prolixa. All of these specimens were collected from Riviére Cave, Cañon Forestier, Ankarana, 60 km south of Diego Suarez, northern Madagascar, 8 August-27 September 1986, by N. W. Lear and S. U. Fowler. Although the locality is similar to that reported for the holotype, it may be possible that these specimens are topotypic, and were collected at the same time as the original type series. However, it is difficult to be certain of this because the date of collection and the names of the collectors were not supplied in the original description (Ng and Takeda, 1994). Skelosophusa prolixa was previously known only from two specimens collected from this same locality. Th e holotype described by Ng and Takeda (1994) has a CW of 25.6 mm and CL of 18.8 mm; these two measurements give a cw/cl ratio of 1.3 (compared to 1.4 for the present specimens). This species possesses a number of adaptations (e.g. normal length eyestalks but with reduced corneas, lack of pigmentation of the carapace and legs, and extremely long ambulatory legs, p2-p5) typical of true cave-adapted species of freshwater crabs (Ng and Takeda, 1994). Th e adult male specimen among the new material photographed here (Fig. 4 A–D) (CW 29.3 mm) is larger than the holotype male (CW 25.6 mm) and shows characters of the cheliped that have not previously been described. For example, the immovable finger of the major cheliped of S. prolixa has one large, fused molar tooth in adults, whereas that of the holotype male, a smaller specimen, has only small teeth (Ng and Takeda, 1994).Published as part of Cumberlidge, Neil & Meyer, Kristin, 2009, A new species of Foza Reed & Cumberlidge, 2006 from northern Madagascar (Decapoda, Brachyura, Potamoidea, Potamonautidae), with a redescription of F. goudoti (H. Milne Edwards, 1853) comb. n., and comments on Skelosophusa prolixa Ng & Takeda, 1994, pp. 77-89 in ZooKeys 18 (18) on page 87, DOI: 10.3897/zookeys.18.102, http://zenodo.org/record/57649
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