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| 1 | 角膜和外眼病诊治的主要进展显示文摘本文收集了近10年来的有关文献。文中着重指出,随着角膜接触镜的普遍应用,感染性角膜炎也明显增多,其中以绿逐杆菌性和棘阿米巴性居多。新的抗病毒药——三氟嘧啶和无环鸟苷对单疱性角膜炎的疗效较好。泪点内置入塞子和泪小管内注入胶原为干眼综合征的新疗法,滴用的人工泪液中不宜含防腐剂,后者可致药物性角膜炎。角膜移植术的热点集中于角膜保存的新方法、人工晶体性大泡性角膜病变的穿透性角膜移植,植片的排斥反应和移植术后散光的预防。放射性角膜切开、表层角膜镜片和散光性角膜切开等手术的研究取得了新进展,并逐步发展为一种专门的屈光性角膜手术。 | George A.Stern 李志辉 | 1989 | 国外医学(眼科学分册)1989，13，4： | 1 |
| 2 | An efficient approach for solving mixed-integer programming problems under the monotonic condition显示文摘Many important integer and mixed-integer programming problems are difficult to solve.A representative example is unit commitment with combined cycle units and transmission capacity constraints.Complicated transitions within combined cycle units are difficult to follow,and system-wide coupling transmission capacity constraints are difficult to handle.Another example is the quadratic assignment problem.The presence of cross-products in the objective function leads to nonlinearity.In this study,building upon the novel integration of surrogate Lagrangian relaxation and branch-and-cut,such problems will be solved by relaxing selected coupling constraints.Monotonicity of the relaxed problem will be assumed and exploited and nonlinear terms will be dynamically linearised.The linearity of the resulting problem will be exploited using branch-and-cut.To achieve fast convergence,guidelines for selecting stepsizing parameters will be developed.The method opens up directions for solving nonlinear mixed-integer problems,and numerical results indicate that the new method is efficient. | Mikhail A.Bragin Peter B.Luh Joseph H.Yan Gary A.Stern | 2016 | Journal of Control and Decision2016，3，1： | 1 |
| 3 | 查看详情显示文摘 | C.Nayak S.H.Simon A.Stern M.Freedman and S.Das Sarma | | 0，，： | 1 |
| 4 | 眨眼的涵义——思维分段的精神表现显示文摘我们最敏感的感觉器官极易受到伤害。眼睛睁开的时候,受到从灰尘、烟雾到指向面部的某些辛辣物体和侵袭等任何东西的影响。当然,眼睛的大部分受到颅骨的保护:每个眼窝都由7块互相嵌合的骨头组成,周围附有脂肪,除了最严重的损害外它可以忍受一般的侵袭。不过,大体上来讲,眼睛整个表面的十分之一,即用以观察外界和收集光线的桃仁状的部分,在其本身和空气之间没有任何其它媒介。人体通过眨眼来保护这个极其重要的器官。 | John A.Stern 杨念 | 1990 | 世界科学1990，12，5： | 0 |
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