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Search Results: 1 - 10 of 52213 matches for " Lin Ji "
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Theoretical studies of the local structure and the EPR parameters for substitutional Mo5+ in TiO2
Lin, Ji- Zi;
Brazilian Journal of Physics , 2010, DOI: 10.1590/S0103-97332010000300016
Abstract: the electron paramagnetic resonance(epr) parameters g-factors gi(i = x,y,z) and the hyperfine structure constants ai for the substitutional mo5+ in rutile are theoretically studied from the perturbation formulas of these parameters for a d1 ion in a rhombically compressed octahedron. on the basis of the studies, the oxygen octahedron around mo5+ is found to transform from the original elongation on the host ti4+ site to compression in the impurity center due to the jahn-teller effect. the calculated epr parameters based on the above local structure in this work are in good agreement with the experimental data.
師鐸--資料導向式中文編輯系統 CAITOOL, A Data-Oriented Chinese Authoring System
Yung-ji Lin
Journal of Educational Media & Library Sciences , 1992,
Abstract: 無 This paper deseribes the idea of Data-oriented Chilifur Authorina System(system name: CAITOOL). CAITOOL, was programmed in PASCAI, language under environment of ET Chinese system, base on independ modulerand data structure. Any courseware desisned by this system only include fileof integer data type (two hytes). so these courseware can he run in differentsoftware or hardware environment. Programmer can design different translator program to-explain these cotirseware data, it will increase the portabilityof CAI courseware.
Research on Recursive Grouping Data Barycenter Method and its Application
Ji-Lin Zhang
Research Journal of Applied Sciences, Engineering and Technology , 2012,
Abstract: A new and useful parameter estimating method for econometric dynamic model is proposed in this paper. Moreover, a new forecasting method is also proposed in this paper based on it. These methods could deal with the fitting and forecasting of economy dynamic model and could greatly decrease the forecasting errors result from the singularity of the real data. Moreover, the strict hypothetical conditions in least squares method were not necessary in the method presented in this paper, which overcome the shortcomings of least squares method and expanded the application of data barycentre method. The new methods are applied to Chinese steel consumption forecasting based on the historic data. It is shown that the result of fitting and forecasting was satisfactory. From the comparison between new forecasting method and least squares method, we could conclude that the fitting and forecasting results using data barycentre method was more stable than that using least squares regression forecasting method, and the computation of data barycentre forecasting method was simpler than that of least squares method. As a result, the data barycentre method was convenient to use in technical economy.
Formation and tidal evolution of hot super-Earths in multiple planetary systems
Ji-Lin Zhou
Physics , 2009, DOI: 10.1051/eas/1042027
Abstract: Hot super-Earths are exoplanets with masses < 10 Earth masses and orbital periods < 20 days. Around 8 hot super-Earths have been discovered in the neighborhood of solar system. In this lecture, we review the mechanisms for the formation of hot super-Earths, dynamical effects that play important roles in sculpting the architecture of the multiple planetary systems. Two example systems (HD 40307 and GJ 436) are presented to show the formation and evolution of hot super-Earths or Neptunes.
Painleve properties and exact solutions for the high-dimensional Schwartz Boussinesq equation

Ren Bo,Lin Ji,

中国物理 B , 2009,
Abstract: The usual (1+1)-dimensional Schwartz Boussinesq equation is extended to the (1+1)-dimensional space--time symmetric form and the general ($nThe usual (1+1)-dimensional Schwartz Boussinesq equation is extended to the (1+1)-dimensional space--time symmetric form and the general ($n$+1)-dimensional space--time symmetric form. These extensions are Painlev\'e integrable in the sense that they possess the Painlev\'e property. The single soliton solutions and the periodic travelling wave solutions for arbitrary dimensional space--time symmetric form are obtained by the Painlev\'e--B\"acklund transformation.
Promote the Industry Standard of Smart Home in China by Intelligent Router Technology
Hui Lin,Jianbiao Lin,Ke Ji,Jingjie Wang,Feng Lin
Computer Science , 2015,
Abstract: The reason why smart home remains not popularized lies in bad product user experience, purchasing cost, and compatibility, and a lack of industry standard[1]. Echoing problems above, and having relentless devoted to software and hardware innovation and practice, we have independently developed a set of solution which is based on innovation and integration of router technology, mobile Internet technology,Internet of things technology,communication technology, digital-to-analog conversion and codec technology, and P2P technology among others. We have also established relevant protocols (without the application of protocols abroad). By doing this, we managed to establish a system with low and moderate price, superior performance, all-inclusive functions, easy installation, convenient portability, real-time reliability, security encryption, and the capability to manage home furnitures in an intelligent way. Only a new smart home system like this can inject new idea and energy into smart home industry and thus vigorously promote the establishment of smart home industry standard.
Planetesimal Accretion in Binary Systems: Role of the Companion's Orbital Inclination
Ji-Wei Xie,Ji-Lin Zhou
Physics , 2009, DOI: 10.1088/0004-637X/698/2/2066
Abstract: Recent observations show that planet can reside in close binary systems with stellar separation of only about 20 AU. However, planet formation in such close binary systems is a challenge to current theory. One of the major theoretical problems occurs in the intermediate stage-planetesimals accretion into planetary embryos-during which the companion's perturbations can stir up the relative velocites(dV) of planetesimals and thus slow down or even cease their growth. However, all previous studies assumed a 2-dimentional (2D) disk and a coplanar binary orbit. Extending previous studies by including a 3D gas disk and an inclined binary orbit with small relative inclination of i_B=0.1-5 deg, we numerically investigate the conditions for planetesimal accretion at 1-2 AU, an extension of the habitable zone(1-1.3 AU), around alpha Centauri A in this paper. Inclusion of the binary inclination leads to: (1) differential orbital phasing is realized in the 3D space, and thus different-sized bodies are separated from each other; (2) total impact rate becomes lower, and impacts mainly occur between similar-sized bodies; (3) accretion is more favored, but the balance between accretion and erosion remains uncertain, and the "possible accretion region" extends up to 2AU when assuming an optimistic Q*(critical specific energy that leads to catastrophic fragmentation); and (4) impact velocities (dV) are significantly reduced but still much larger than their escape velocities, which infers that planetesimals grow by means of type II runaway mode. As a conclusion, inclusion of a small binary inclination is a promising mechanism that favors accretion, opening a possibility that planet formation in close binary systems can go through the difficult stage of planetesimals accretion into planetary embryos.
Planetesimal Accretion in Binary Systems: Could Planets Form Around Alpha Centauri B ?
Ji-Wei Xie,Ji-Lin Zhou,Jian Ge
Physics , 2010, DOI: 10.1088/0004-637X/708/2/1566
Abstract: Stellar perturbations affect planet-formation in binary systems. Recent studies show that the planet-formation stage of mutual accretion of km-sized planetesimals is most sensitive to binary effects. In this paper, the condition for planetesimal accretion is investigated around Alpha CenB, which is believed to be an ideal candidate for detection of an Earth-like planet in or near its habitable zone(0.5-0.9 AU). A simplified scaling method is developed to estimate the accretion timescale of the planetesimals embedded in a protoplanetary disk. Twenty-four cases with different binary inclinations(i_B=0, 0.1, 1.0, and 10 deg), gas densities(0.3,1,and 3 times of the Minimum Mass of Solar Nebula, MMSN hereafter), and with and without gas depletion, are simulated. We find: (1)...(2)...(3)...(4)...(see the paper for details). In other words, our results suggest that formation of Earth-like planets through accretion of km-sized planetesimals is possible in Alpha CenB, while formation of gaseous giant planets is not favorable.
Predicting the Configuration of Planetary System: KOI-152 Observed by Kepler
Su Wang,Jianghui Ji,Ji-lin Zhou
Physics , 2012, DOI: 10.1088/0004-637X/753/2/170
Abstract: The recent Kepler discovery of KOI-152 reveals a system of three hot super-Earth candidates that are in or near a 4:2:1 mean motion resonance. It is unlikely that they formed in situ, the planets probably underwent orbital migration during the formation and evolution process. The small semimajor axes of the three planets suggest that migration stopped at the inner edge of the primordial gas disk. In this paper we focus on the influence of migration halting mechanisms, including migration "dead zones", and inner truncation by the stellar magnetic field. We show that the stellar accretion rate, stellar magnetic field and the speed of migration in the proto-planetary disk are the main factors affecting the final configuration of KOI-152. Our simulations suggest that three planets may be around a star with low star accretion rate or with high magnetic field. On the other hand, slow type I migration, which decreases to one tenth of the linear analysis results, favors forming the configuration of KOI-152. Under such formation scenario, the planets in the system are not massive enough to open gaps in the gas disk. The upper limit of the planetary masses are estimated to be about $15,~19$, and $24 M_\oplus$, respectively. Our results are also indicative of the near Laplacian configurations that are quite common in planetary systems.
The relationship between short-range motion of atmosphere and ocean and conservative and nonconservative scheme
Wantao Lin,Zhongzhen Ji,Bin Wang
Chinese Science Bulletin , 2003, DOI: 10.1007/BF03184215
Abstract: Taking one-dimensional shallow water wave equation as an example, a comparative analysis on the computational stability related to the short-range motion of atmosphere and ocean is carried out for the conservative and nonconservative scheme, and it is pointed out that the computational stability of conservative scheme is absolutely different from that of the nonconservative scheme. The relationship between the short-range motion of atmosphere and ocean and the conservative and nonconservative scheme is further discussed. The constructed conservative scheme is proved to be stable by the numerical experiment for the short-range motion of atmosphere and ocean while the CTCS scheme is unstable. So that the conservative scheme for the solution of this kind of problem has more advantages.
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