In this review, the theorelical study on D-physics is summarized including D-(?) mixing, D meson decays, diquark contributions to D-physics, 1/Nc expansion, final state interactions and some discussions about BEPC and...In this review, the theorelical study on D-physics is summarized including D-(?) mixing, D meson decays, diquark contributions to D-physics, 1/Nc expansion, final state interactions and some discussions about BEPC and BES.展开更多
The progress in the research on OPAC is summarized,mainly on the subject retrieval and known document retrieval,known document retrieval and subject retrieval.Finally,the article gives the result of research.
The theoretical studies on information pollution in recent years are described.The emphases are put on the achievements,problems now existent,and the direction for future studies.
文摘In this review, the theorelical study on D-physics is summarized including D-(?) mixing, D meson decays, diquark contributions to D-physics, 1/Nc expansion, final state interactions and some discussions about BEPC and BES.
文摘The progress in the research on OPAC is summarized,mainly on the subject retrieval and known document retrieval,known document retrieval and subject retrieval.Finally,the article gives the result of research.
文摘The theoretical studies on information pollution in recent years are described.The emphases are put on the achievements,problems now existent,and the direction for future studies.