http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Rouhi Faisal,Aik Lee Chong,Angelina Seow Voon Yee 아시아기술혁신학회 2017 Asian Journal of Innovation and Policy Vol.6 No.3
The purpose of this case study is to understand the sustainability practices of knowledge transfer process at the Malaysian government-industry-academia consortium. At this stage in the research, the R&D consortium is defined as an established entity by two or more organizations that pool resources and shared decision making for cooperative research and development activities. In attempts to understand the formation, outcomes and sustainability of the sustainable knowledge transfer process, this paper conducted a systematic literature review based on Gough, Oliver and Thomas systematic reviews protocol. From the review, the data were enriched and enhanced with a better understanding of sustainable knowledge transfer process. The systematic review resulted in identifying six factors including internal and external perspectives. However, key sustainability factors are not only directly influencing KTP, and the consortium, but are also mediated by other organisational variables.
Faisal, Rouhi,Chong, Aik Lee,Yee, Angelina Seow Voon Asian Society for Innovation and Policy 2017 Asian Journal of Innovation and Policy Vol.6 No.3
The purpose of this case study is to understand the sustainability practices of knowledge transfer process at the Malaysian government-industry-academia consortium. At this stage in the research, the R&D consortium is defined as an established entity by two or more organizations that pool resources and shared decision making for cooperative research and development activities. In attempts to understand the formation, outcomes and sustainability of the sustainable knowledge transfer process, this paper conducted a systematic literature review based on Gough, Oliver and Thomas systematic reviews protocol. From the review, the data were enriched and enhanced with a better understanding of sustainable knowledge transfer process. The systematic review resulted in identifying six factors including internal and external perspectives. However, key sustainability factors are not only directly influencing KTP, and the consortium, but are also mediated by other organisational variables.
Jalal Rouhi,C. H. Raymond Ooi,Shahrom Mahmud,Mohamad Rusop Mahmood 대한금속·재료학회 2015 ELECTRONIC MATERIALS LETTERS Vol.11 No.6
Well-aligned ZnO-ZnS core-shell nano-needle arrays were synthesized using a simple aqueous solution approach to investigate the optical and field emission properties of heterostructure materials. The photoluminescence of the coreshell nano-needles exhibits a distinct enhancement compared with that of uncoated ZnO nano-needles. The UV-vis spectra show that the ZnS shell layer enhances the optical absorption of ZnO nano-needles by decreasing the interface band gap, which indicates the potential application of heterostructures in photovoltaic and solar cells. The core-shell nano-needles exhibit a remarkably high field enhancement factor of 3.74 × 103, a low turn-on field of 2.31 V/μm, and a high time stability. These findings show that the construction of core-shell heterostructure can efficiently improve the field emission performance of ZnO nano-needles, which is a promising route for the development of novel nanoemitters with controllable morphology and as suitable shell materials for heterostructures.
Gholamreza Rouhi,Ali Vahdati,Xianjie Li,Les Jozef Sudak 대한의용생체공학회 2015 Biomedical Engineering Letters (BMEL) Vol.5 No.4
Purpose Optimal bone remodeling is responsible for bonehealth and strength, and an imbalance in this process maycause diseases such as osteoporosis. Both osteocyte densityand mechanosensitivity are effective parameters in changingbone apparent density. This study aimed at investigating theeffects of osteocyte density in healthy adults, and osteocytemechanosensitivity in osteoporotic bones, on bone loss usinga semi-mechanistic bone remodeling theory. Methods A 2-D finite element model of trabecular bone wasdeveloped in order to simulate the process of boneremodeling. The structure was loaded by a sinusoidal stress,cycling between 0 and 2 MPa, and at frequency of 1 Hz. Itwas assumed that the stimulus sensed by osteocytes is themaximal strain energy density rate. By changing osteocytedensity and mechanosensitivity, the effects of alteringexternal load magnitude and/or direction were investigated. Results First, trabecular-like structures were obtained fromthe initial configuration, in which trabeculae were lined upwith the loading direction as verification of model’simplementation. Secondly, it was demonstrated that boneloss could occur in healthy older trabecular bone model,compared to healthy young bone model. Finally, this in silicostudy showed that by decreasing osteocyte mechanosensitivity,assuming a constant osteocyte density, a decrease in boneapparent density is predicted. Conclusions Results of this work indicated that the semimechanisticmodel used here may reasonably explain boneloss in healthy adults and in osteoporotic patients. Moreover,this study sheds more light on the possible effects that osteocytedensity in healthy adults, and osteocyte mechanosensitivityin osteoporotic individuals, may have on bone apparentdensity predictions.
Magnetic Particle Separation by an Optimized Coil
Kasra Rouhi,Amirhossein Hajiaghajani,Ali Abdolali 한국자기학회 2017 Journal of Magnetics Vol.22 No.2
Magnetic separators that clean the fluid stream from impurities, protect the installations in numerous industries. This paper introduces a graphical user interface (GUI) which proposes an optimized coil separating magnetic particles with a radius from 1 up to 500 ㎛. High gradient magnetic fields are employed in an arbitrary user defined fluidic channel which is made of a nonmetallic material. The effects of coil parameters are studied and adjusted to design an optimum coil with a minimum Ohmic loss. In addition, to design the coil scheme based on the particle movements, a mathematical particle-tracing model within the fluid channels has been utilized. In comparison to conventional magnetic separators, this model is reconfigurable by the user, produces a weaker magnetic field, allows for continuous purifying and is easy to install, with high separation efficiency. The presented GUI is simple to use, where the coil’s manufacturing limitations can be specified.
HESSAM ROUHI,REZA ANSARI 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2012 NANO Vol.7 No.3
In this paper, a nonlocal Flugge shell model is utilized to investigate the axial buckling behavior of double-walled carbon nanotubes(DWCNTs) under various boundary conditions. According to the nonlocal elasticity theory, the displacement ¯eld equations coupled by the van der Waals interaction are derived. The set of governing equations of motion is then solved by the Rayleigh?Ritz method. The present analysis can treat boundary conditions in a layer-wise manner. The e®ects of nonlocal parameter, layer-wise boundary conditions and geometrical parameters on the mechanical behavior of DWCNTs are examined. Furthermore, molecular dynamics simulations are performed to assess the validity of the results and also to predict the appropriate values of nonlocal parameter. It is found that the type of boundary conditions a®ects the proper value of nonlocal parameter.
Abbas Rouhi,Hamed Hamidi 한국강구조학회 2021 International Journal of Steel Structures Vol.21 No.3
Performance-based plastic design (PBPD) is a method which considers the inelastic behavior of a structure for the seismic design that follows a pattern in which a pre-selected yield mechanism is defi ned for each type of structural system. Despite the general adequacy of this method compared to the code-based method, the need to further improve this method against Forward-Directivity , the well-known characteristic of near-fault ground motions, is of high importance. On the other hand, Eccentrically Braced Frame (EBF) is considered to be an effi cient conventional steel-framed system that combines the advantages of moment-resisting frame and concentrically braced frame. In this study, attempts have been made to improve the conventional PBPD method in order to consider the eff ect of forward-directivity. To this end, the energy modifi cation factor (γ) was modifi ed by recalculating ductility demand μ and ductility reduction factor R μ of three 6-, 12-, and 18-story EBF structures. Using incremental dynamic analysis, these structures were subjected to 12 well-known near-fault ground motions, and accordingly, the modifi ed energy factor (γ′) was obtained for each set. Then, an equation was proposed to calculate the γ′ based on the fundamental period of the structure. As expected, the code-based designed structures exceeded the allowable drift limits. Although the structures which were designed based on conventional PBPD followed the pre-selected yield mechanism and performed better, they exceeded the drift limits as well. Consequently, the structures which were re-designed using modifi ed energy factor γ′ could well satisfy the acceptance criteria as well as achieving the desirable yield mechanism.