http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Sajad (검색결과 106 건)
- 무료
- 기관 내 무료
- 유료
-
Sajad Majeed Zargar,Bodo Raatz,Humira Sonah,Muslima Nazir,Javid A Bhat,Zahoor Ahmad Dar,Ganesh Kumar Agrawal,Randeep Rakwal 한국작물학회 2015 Journal of crop science and biotechnology Vol.18 No.5
Recent advances in sequencing technology have brought several novel platforms for marker development and subsequent genotyping. The high-throughput and cost effective marker techniques have changed the entire scenario of marker applications. The huge genotypic data obtained with next generation sequencing (NGS) also demands analytical tools, statistical advances, and comprehensive understanding to cope with breeding applications. In the present review, we discussed different available marker techniques, their strengths, and limitations. Emphasis was given on software tools, analytical pipelines, workbenches, and online resources available for marker development. Comparison of SNP genotyping involving complexity reduction techniques like GBS, RRL, RAD, and array-based platforms were presented in a view to describe suitability for specific purposes. We found that genotyping by whole genome re-sequencing has great potential, and could be a routine application in the near future with continuously decreasing cost of sequencing. Microsatellites, still a valuable option for breeders, have also advanced with NGS. Here a catalogue of tools for microsatellite evaluation in short sequence reads was provided. The most common applications of molecular marker like QTL mapping, genome-wide association mapping (GWAS), and genomic selection were highlighted. The present review will be helpful for the effective utilization of available resources and for the planning of crop improvement programs employing molecular marker techniques
-
Sajad Shariati Rad 사단법인 한국계산역학회 2018 Computers and Concrete, An International Journal Vol.22 No.1
The use of nanotechnology materials and applications in the construction industry should be considered for enhancing material properties. However, in this paper, the technical and economical assessment of applying silica nanoparticles for construction of concrete structure is studied. In order to obtain the equivalent material properties of the structure, the Mori- Tanaka model is used considering agglomeration of nanoparticles. The effect of using these nanoparticles on mechanical properties of concrete, such as the modulus of elasticity, compressive strength, as well as its indirect effect on armature percentage is investigated. Finally, the price of silica nanoparticles and its effect on the price increase of concrete structure is investigated. The results show that increasing the volume percent of silica nanoparticles up to 10% improves elastic modulus 111% and reduces amateur percentage up to 72%.
-
A comprehensive molecular dynamics study of a single polystyrene chain in a good solvent
Sajad Rasouli,Mohammad Reza Moghbeli,Sousa Javan Nikkhah 한국물리학회 2018 Current Applied Physics Vol.18 No.1
In this study, molecular characteristics of polystyrene (PS) was calculated measuring its dilute-solution properties in toluene at 288.15 K via molecular dynamics (MD) simulations. The solution models consisted of PS chains with different number of repeating units all of which were in a dilute regime. In order to investigate the compatibility between the polymer and the solvent molecules, interaction energy and Flory-Huggins (FH) interaction parameter were estimated. The simulation results indicate that increasing the chain repeating units enhanced the interaction between the solute and the solvent. Additionally, the chain dimensions were evaluated calculating the radius of gyration (Rg) and end-to-end distance, r0. To determine the dynamic behavior of the chains in the solutions, mean square displacement (MSD) and diffusivity coefficient were calculated. The simulation results indicated that the chain rigidity at low molecular weight and chain flexibility with increasing the molecular weight influenced chains dynamic behavior and diffusivity. Moreover, radial distribution function (RDF) illustrated the effect of steric hindrance of the chains in dilute solution on capturing the solvent molecules. In addition, solution viscosity was calculated by performing non-equilibrium molecular dynamics simulation (NEMD). The obtained results of chain characteristics and viscosity showed a good agreement with experimental results published previously. This agreement confirms the accuracy of the applied simulation method to characterize the dilute solutions and the chains characteristics.
-
Buckling analysis of arbitrary point-supported plates using new hp-cloud shape functions
Sajad Jamshidi,N. Fallah 국제구조공학회 2019 Structural Engineering and Mechanics, An Int'l Jou Vol.70 No.6
Considering stress singularities at point support locations, buckling solutions for plates with arbitrary number of point supports are hard to obtain. Thus, new Hp-Cloud shape functions with Kronecker delta property (HPCK) were developed in the present paper to examine elastic buckling of point-supported thin plates in various shapes. Having the Kronecker delta property, this specific Hp-Cloud shape functions were constructed through selecting particular quantities for influence radii of nodal points as well as proposing appropriate enrichment functions. Since the given quantities for influence radii of nodal points could bring about poor quality of interpolation for plates with sharp corners, the radii were increased and the method of Lagrange multiplier was used for the purpose of applying boundary conditions. To demonstrate the capability of the new Hp- Cloud shape functions in the domain of analyzing plates in different geometry shapes, various test cases were correspondingly investigated and the obtained findings were compared with those available in the related literature. Such results concerning these new Hp-Cloud shape functions revealed a significant consistency with those reported by other researchers.
-
Exploring the Internationalization Potential of the Persian Gulf Pro League
Sajad Soroush,Geoff Dickson,Seyed Nasrollah Sajjadi,Ebrahim Alidoust Ghahfarokhi 글로벌지식마케팅경영학회 2024 Journal of Global Sport Management Vol.9 No.1
Professional sports leagues, like so many other organizations, seek to access international markets. The purpose of this research was to explore stakeholder perceptions of the internationalization potential of the Persian Gulf Pro League (PGPL). Data were collected via 20 in-depth interviews with football federation marketing executives, club marketing executives, and experts in internationalization and sports marketing. The data analysis was guided by the principles of grounded theory with the aid of open and axial coding. The analysis produced 39 issues affecting the internationalization of the PGPL. These were classified into five main dimensions—political, economic, managerial, legal, technical-marketing, and socio-cultural factors.
-
Sajad Rostami,Vahid Abbasi,Tamas Kerekes 전력전자학회 2019 JOURNAL OF POWER ELECTRONICS Vol.19 No.4
In this paper, a DC-DC converter is proposed based on the Cuk converter. The proposed converter has high efficiency and itcan be used in multilevel DC-DC converters. A reduction of the inductors size in comparison to Cuk converter and a reduction inthe inductors resistance negative effects on efficiency are the important points of the proposed converter. Its voltage ripple isreduced when compared to other converters. Its output voltage has a high quality and does not contain spikes. A theoreticalanalysis demonstrates the positive points of the proposed converter. The design and analysis of the converter are done incontinues conduction mode (CCM). Experiments confirm the obtained theoretical equations. The proposed converter voltagegain is similar to that of a conventional Boost converter. As a result, they are compared. The comparison illustrates theadvantages of the proposed converter and its higher quality. Furthermore, a prototype of the proposed converter and itscombination with a 2x multiplier are built in the lab. Experimental results validate the analysis. In addition, they are in goodagreements with each other.
-
-
Sajad Saberi,Behrooz Rezaie 전력전자학회 2022 JOURNAL OF POWER ELECTRONICS Vol.22 No.7
Direct predictive speed control (DPSC) using a finite control set MPC (FCS-MPC) is a popular control method for multi-level converters. In FCS-MPC-based designs, there are two key issues. First, when the number of switching states increases, the computational burden dramatically increases, which makes real-time implementation impractical when compared to traditional modulation methods such as field-oriented control (FOC). The issue of stability is another key concern with DPSC. In the present study, the speed of a permanent magnet synchronous motor (PMSM) fed by a three-level neutral-point clamped (3L-NPC) convertor is controlled using a computationally efficient DPSC technique with hexagon candidate region (HCR). Back-stepping is also used in the proposed method to generate the q-axis current reference and continuous d–q axis control voltage for the DPSC to guarantee the stability of the closed loop system using the Lyapunov stability theorem. Furthermore, in HCR, the continuous control law checks the voltage vectors while only passing the vectors that do not jeopardize the stability of the system. As a result, stability is taken into account and also the number of voltage candidates for FCS-MPC decreases significantly. This in turn leads to reductions in the computational burden. The system is simulated in MATLAB/Simulink to validate the efficiency of the proposed method.
-
Sajad Shahverdi,Mohammad Ali Lotfollahi-Yaghin,Behrouz Asgarian 국제구조공학회 2013 Smart Structures and Systems, An International Jou Vol.11 No.6
Identification of damage has become an evolving area of research over the last few decades with increasing the need of online health monitoring of the large structures. The visual damage detection can be impractical, expensive and ineffective in case of large structures, e.g., offshore platforms, offshore pipelines, multi-storied buildings and bridges. Damage in a system causes a change in the dynamic properties of the system. The structural damage is typically a local phenomenon, which tends to be captured by higher frequency signals. Most of vibration-based damage detection methods require modal properties that are obtained from measured signals through the system identification techniques. However, the modal properties such as natural frequencies and mode shapes are not such good sensitive indication of structural damage. Identification of damaged jacket type offshore platform members, based on wavelet packet transform is presented in this paper. The jacket platform is excited by simple wave load. Response of actual jacket needs to be measured. Dynamic signals are measured by finite element analysis result. It is assumed that this is actual response of the platform measured in the field. The dynamic signals first decomposed into wavelet packet components. Then eliminating some of the component signals (eliminate approximation component of wavelet packet decomposition), component energies of remained signal (detail components) are calculated and used for damage assessment. This method is called Detail Signal Energy Rate Index (DSERI). The results show that reduced wavelet packet component energies are good candidate indices which are sensitive to structural damage. These component energies can be used for damage assessment including identifying damage occurrence and are applicable for finding damages' location.
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
