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Takashi Shirane,Susumu Chikazawa,Teruo Bitoh 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.3
A new method is proposed to separate magnetic losses near the Curie temperature TC by analyzing both the ac linear (X0) and nonlinear (X2) susceptibilities on the basis of the Rayleigh law. This method is applied to X0 and X2 of nickel to obtain the temperature dependence of the Rayleigh constant and the linear and the nonlinear terms of the residual loss near TC. The Rayleigh constant diverges approaching TC from below. The residual-loss terms show sharp peaks at TC. Analysis of the critical behavior yields the values of the critical exponents for the Rayleigh constant and the residual-loss terms.
Nonlinear Susceptibilities of Gadolinium near Curie Temperature
Takashi Shirane,Shohei Sakurai 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
The ac linear (X0) and nonlinear (X2) susceptibilities of an elemental ferromagnetic gadoliniumhave been studied at temperatures near the Curie temperature TC to clarify the feature of themagnetic phase transition, with special emphasis on the behavior at temperatures below TC. Thetemperature dependence of X0 is in good agreement with an experimental result reported in severalreferences. The first observation for the critical behavior of X2 in gadolinium has been made atvarious field amplitudes. The behavior of nonlinear susceptibility is very sensitive to the field’samplitude. The temperature dependence of X2 at temperatures below TC is not in agreement withsome theoretical expectations and several experimental results for other ferromagnets.
Function-level module sharing techniques in high-level synthesis
Nishikawa, Hiroki,Shirane, Kenta,Nozaki, Ryohei,Taniguchi, Ittetsu,Tomiyama, Hiroyuki Electronics and Telecommunications Research Instit 2020 ETRI Journal Vol.42 No.4
High-level synthesis (HLS), which automatically synthesizes a register-transfer level (RTL) circuit from a behavioral description written in a high-level programming language such as C/C++, is becoming a more popular technique for improving design productivity. In general, HLS tools often generate a circuit with a larger area than those of hand-designed ones. One reason for this issue is that HLS tools often generate multiple instances of the same module from a function. To eliminate such a redundancy in circuit area in HLS, HLS tools are capable of sharing modules. Function-level module sharing at a behavioral description written in a high-level programming language may promote function reuse to increase effectiveness and reduce circuit area. In this paper, we present two HLS techniques for module sharing at the function level.
Assessment of recycled concrete aggregates as a pavement material
Jayakody, Shiran,Gallage, Chaminda,Kumar, Arun Techno-Press 2014 Geomechanics & engineering Vol.6 No.3
Population increase and economic developments can lead to construction as well as demolition of infrastructures such as buildings, bridges, roads, etc resulting in used concrete as a primary waste product. Recycling of waste concrete to obtain the recycled concrete aggregates (RCA) for base and/or sub-base materials in road construction is a foremost application to be promoted to gain economical and sustainability benefits. As the mortar, bricks, glass and reclaimed asphalt pavement (RAP) present as constituents in RCA, it exhibits inconsistent properties and performance. In this study, six different types of RCA samples were subjected classification tests such as particle size distribution, plasticity, compaction test, unconfined compressive strength (UCS) and California bearing ratio (CBR) tests. Results were compared with those of the standard road materials used in Queensland, Australia. It was found that material type 'RM1-100/RM3-0' and 'RM1-80/RM3-20' samples are in the margin of the minimum required specifications of base materials used for high volume unbound granular roads while others are lower than that the minimum requirement.
Mahnaz Shiran,Mohammad Ali Zangeneh Asadi,Paolo Mozzi,Hamed Adab,Abolghasem Amirahmadi 한국지질과학협의회 2020 Geosciences Journal Vol.24 No.5
Fractal geometry is considered as a new method for quantitative analysis and explanation of surface complexities and roughness in self-similar or self-affine landforms. In the present study, the surface fractal dimensions were investigated by a cellular model by covering divider method and remote sensing data, in a complex morphotectonic region in terms of tectonic, geological, and geomorphological structures along the margin of the High Zagros Belt. Results of this study indicated that surface anomalies can be detected by cellular fractal model due to variations at the boundary of lithological units and structural zones, and along faults that can change the characters of the fractal dimension of landforms. Investigation of wavelet analyses on two profiles of study area shows that the amplitude and frequency of the fractal dimension is related to lithological and structural zones boundaries, and to the presence of faults. In this study, the lowest fractal dimension is associated with the integrated units of Mesozoic orbitolina limestone on the border of the two structural zones of Sanandaj-Sirjan and High Zagros belt. However, the presence of friable and erodible Quaternary formations increases the fractal dimension. There is an inverse relationship between the fractal dimension and elevation and Terrain Ruggedness Index, indicating that mountains have lower fractal dimensions than lowlands. The results of the present study show that fractal dimensional changes in topographically complex zones depend on the interaction of a set of lithological, tectonic, and geomorphological factors, and allow for a systematic quantitative analysis of landforms.
중국 정부 지원정책이 신에너지 자동차산업 발전에 미치는 영향
조현준,Sun Shiran 한국동북아경제학회 2020 동북아경제연구 Vol.32 No.3
This paper, using a panel data regression model, empirically analyzes the impact of Chinese governmental support policies on the NEV (new energy vehicle) industry. In the model, government’s support and subsidies are divided into supply-side and demand-side ones, and the panel data used are several financial indicators of major NEV manufacturers (listed companies) and NEV acquisition tax reduction rates during the period 2007-2017, finally examined and evaluated are the effects of the support policy and its effectiveness. In the regression analysis, operating cost, revenue and profit are set as dependent variables; and set as independent variables are indicators of the financial status of the sample firms, indicators of support to the firms (financial aid, tax reductions, tax refunds, etc.), and indicators of subsidies for consumption (acquisition tax reductions). As a result of the analysis, the demand-side tax cut showed a significant positive correlation with the operating profit of electric vehicle battery manufacturers, but no significant correlation with the NEV finished car makers. On the other hand, the supply-side support policy showed a significant positive correlation with operating profitability of both NEV finished car makers and electric vehicle battery manufacturers. However, the supply-side support policy was also found to partially increase operating costs. This may suggest that companies need to improve production efficiency and/or R&D efficiency, and the rate of increase in consumption demand does not reach the rate of increase in the companies’ production and R&D input.
Tan, Yee Hock,Sidik, Shiran Mohd,Husain, Sharifah Noor Akmal Syed,Lye, Munn Sann,Chong, Pei Pei Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.1
Background: Tobacco smoking is considered a risk factor for cervical cancer development due to the presence of tobacco based carcinogenic metabolites in cervical cells of female smokers. In this study, we investigated the role of the T3801C (MspI) polymorphism of CYP1A1, a gene encoding an enzyme necessary for the initiation of tobacco based carcinogen metabolism, on cervical cancer risk. The T to C substitution may alter CYP1A1 activities, potentially elevating cervical cancer risk. Since results of gene-disease association studies vary according to the study population, the multi-ethnic population of Malaysia provides an excellent representative cohort for identifying and comparing the cervical cancer risk among the 3 major ethnics in Southeast Asia in relation to CYP1A1 MspI polymorphism. Materials and Methods: A total of 195 Thin Prep Pap smear samples from HPV negative and cancer free females were randomly selected as controls while 106 formalin fixed paraffin embedded samples from females with invasive cervical cancer were randomly selected for the cases group. The polymorphisms were identified using restriction fragment length polymorphism (RFLP) PCR. Results: We found no significant associations between CYP1A1 MspI polymorphism and cervical cancer in the general Malaysian female population. However, upon ethnic stratification, the variant C/C genotype was significantly associated with a 4.66-fold increase in cervical cancer risk in Malay females (95% CI= 1.21-17.9; p=0.03). No significant association was observed in the Chinese and Indian females. Additionally, there were no significant associations in the dominant model and allele frequency model analysis in both the general and ethnically stratified female population of Malaysia. Conclusions: Our findings suggest that the C/C genotype of CYP1A1 MspI polymorphism is associated with the development of cervical carcinoma in the Malay females of Malaysia.