著者

橋爪 邦夫

出版者

近畿大学工学部

雑誌

近畿大学工学部研究報告 (ISSN:0386491X)

巻号頁・発行日

no.45, pp.149-171, 2011

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[Synopsis] The energy Hamiltonian, given by Heisenberg in 1928, to discuss the physical properties and the atomics tructure of ferromagnetic substance is as follows: H=—2Σ__<ij>J_<ij>S_i・S_j.-gβΣ__iS_i・H. A spinv ariable S_i is associated with each lattice site. In the Ising model of J_<ijx>=J_<ijy>=0 and J_<iijz>≠0, proposed by E. Ising in Zeit. Phys. 31 253(1925), the above Hamiltonian is simplified as follows : H=-2Σ__<ij>J_<ij>S_<iz>S_<jz>-gβHΣ__iS_<iz>・S_<iz>=±1/2. The system is an array of N fixed points calld lattice sites that form an n-dimensional periodic lattice. The energy of the system in the configuration specified by {S_i} is as follows : E{S_i}=εΣ__<ij>S_iS_j-βHΣ__iS. S_i=+1 denotes that the ith site has spin ip and S_i=-1 detotes that the ith site has spin down. The partition function is Z(H, T)=Σ__<S_1>Σ__<S_2>・・・Σ__<S_N>e^<-<E{S_i}>/<K_BT>>=e^<<1/k_BT>N(1/2γε-βH)>Σ^^N_<N_+>e^<-2・1/<k_BT>(εγ-βH)N_+>Σ^1__<N_++>g(N_+,N_++)e^<4・1/<K_BT>εN_++>. Next the Ising model can be made to simulate the system of a lattice gas and a binary alloy of other than a ferromagnetic substance by a change of names.

著者

望月 輝 藤本 暢宏

出版者

近畿大学工学部

雑誌

近畿大学工学部研究報告 = Research reports of the Faculty of Engineering, Kinki University (ISSN:0386491X)

巻号頁・発行日

no.44, pp.73-78, 2010-12-01

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[Synopsis]A simple and high-speed modulation technique using a white LED for illumination light communication are proposed to enable Ubiquitous Network. The proposed modulation technique enable a 110Mb/s operation. Experimental results show that the proposed system can play a key role in high-speed illumination light communication.

著者

仲宗根 薫

出版者

近畿大学

雑誌

近畿大学工学部研究報告 (ISSN:0386491X)

巻号頁・発行日

vol.39, pp.15-18, 2005-12-20

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Acetyl-CoA carboxylase is key enzyme involved in the starting for fatty acid synthesis. In this study, we have cloned and sequenced gene cluster encoding acetyl-CoA carboxylase from a deep-sea piezo-and psychrophilic bacterium, Shewanella violacea strain DSS12. Sequence and structural analyses were done to understand structural-function relationships for adapting under high pressure and low temperature conditions. The cloned fragment contained two open reading frames, designated the accB and accA genes, capable of encoding a 538-amino-acid protein of 58.1 kDa and a 573-amino-acid protein of 61.5 kDa, respectively. The protein (AccA) encoded by the accA gene was strikingly similar to biotin carboxylase subunits of acetyl-CoA and propionyl-CoA carboxylases and of pyruvate carboxylase. The putative motifs for ATP binding, CO_2 fixation, and biotin binding were found in AccA. The aceB gene was located upstream of the accA gene, and they formed a two-gene operon. The protein (AccB) encoded by the aceB gene showed high degrees of sequence similarity with carboxyltransferase subunits of acetyl-CoA and propionyl-CoA carboxylases and of methylmalonyl-CoA decarboxylase. Carboxybiotin-binding and acyl-CoA-binding domains, which are conserved in several carboxyltrausferase subunits of acyl-CoA carboxylases, were found in AccB.

著者

綿谷 卓真 友國 伸保 黄 健

出版者

近畿大学工学部

雑誌

近畿大学工学部研究報告 = Research reports of the Faculty of Engineering, Kinki University (ISSN:0386491X)

巻号頁・発行日

vol.46, pp.81-84, 2012-12-01

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[Abstract] Mechanism of motion generation of human upper limb has puzzled scientists for a long time because of its high redundancy on mechanical structure and various factors from the environment. It was reported that illusion exerts a strong effect on the human upper limb motion based on the planning-control model of Glover hypothesis. In this study, we investigated the influence of Müller-Lyer visual illusion on the upper limb movement by changing the fingertip contact conditions.

著者

黄 健

出版者

近畿大学工学部

雑誌

近畿大学工学部研究報告 = Research reports of the Faculty of Engineering, Kinki University (ISSN:0386491X)

巻号頁・発行日

no.43, pp.91-96, 2009-12-01

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This paper presents a method for measuring the spatial cognitive ability of the moving distance of the human hand by using motion capture (MoCap). To improve the measurement accuracy of MoCap, a method involving the use of an upper limb model is proposed in this paper. The proposed method has many advantages such as the use of a small number of markers,and better alternatives for marker sticking positions that can reduce inaccuracies due to small muscular deformation. To investigate the cognitive ability of the moving distance of a human hand, both horizontal and vertical hand movements are measured using the proposed protocol for six subjects. The results demonstrate that the average moving distances obtained in both directions become coloser to the standard length compared with the results obtained in the previous study. The experimental results also demonstrate a strong relationship between error of the hand moving distance and manipulability of the upper limb. Moreover, the maximum velocity observed during horizontal and vertical movements are compared; and the result implies that the gravitational force exerted on the arm evidently atlects the hand movement in the blindfolded state during vertical movement.

著者

嶽間沢 秀孝 児島 忠倫

出版者

近畿大学工学部

雑誌

近畿大学工学部研究報告 = Research reports of the School of Engineering, Kinki University (ISSN:0386491X)

巻号頁・発行日

no.42, pp.73-76, 2008-12-01

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It is important to clarify evaporation characteristic of liquid fuel such as gasoline and diesel fuel. This study was conducted on evaporation phenomena of a fuel droplet on a hot wall. Several kinds of liquid normal-paraffin such as n-Hexane, Cyclohexane, Benzene were used as the test. The influence molecular structure of fuel affect evaporation lifetime was investigated in detail.

著者

嶽間沢 秀孝 児島 忠倫

出版者

近畿大学

雑誌

近畿大学工学部研究報告 (ISSN:0386491X)

巻号頁・発行日

vol.39, pp.179-184, 2005-12-20

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It is important to clarify evaporation characteristic of liquid fuel such as gasoline and diesel fuel. This study was conducted on evaporation phenomena of a fuel droplet on a hot wall. Several kinds of liquid normal-paraffin such as n-pentane, n-hexane, n-heptane, n-octane, n-nonane and n-decane and constitutional isomers were used as the test. The influence molecular structure of fuel affect evaporation lifetime was investigated in detail.