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This paper deals with a secretary problem on fuzzy sets, which allows both the recall of applicants and the uncertainty of a current applicant receiving an offer of employment.


Development and employment of approaches that use synthetic mutant and chimeric tRNAs have demonstrated general principles underlying highly specific interaction in different systems.


The method is based on the results of measurements of the state parameters and geophysical conditions of the employment of the rocketandspace facilities under conditions of uncertainty of the a priori data on measurement errors.


Its simplest and lowcost solution is the employment of a small ballistic reentry spacecraft.


The method is based on the employment of the transporting trajectory and considered in [13].

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 Since the year 1886, the DupuitForchheimer theory and formulas for gravityflows toward wells and galleries have been broadly used in all nations of theworld. In these formulas, assumptions are made for underground flows fromfarther distances in horizontal directions at a constant rate toward wells andgalleries. According to the author's analysis, these assumptions are not consistentwith the actual conditions of flow, hence the formulas obtained therefrom are notrational, and the employment of these formulas... Since the year 1886, the DupuitForchheimer theory and formulas for gravityflows toward wells and galleries have been broadly used in all nations of theworld. In these formulas, assumptions are made for underground flows fromfarther distances in horizontal directions at a constant rate toward wells andgalleries. According to the author's analysis, these assumptions are not consistentwith the actual conditions of flow, hence the formulas obtained therefrom are notrational, and the employment of these formulas to investigate the general effectof surface drop or well diametre upon yield is devoid of rational foundations. According to the author's analysis, the flows toward wells or galleries areactually supplied vertically by draining the stored water above the free surface inthe course of its descending and enlarging. As the drainage of gravity water fromthe pores of soil particles in order to reduce the water content to that of filmshells takes one to two days, as the capillary water columns are interconnectedand mutually supplied sidewise, this vertical supply of water may maintain quite along time, yet the flow may not be absolutely steady. As regards vertical supply of water with unsteady regimen, equations of freesurface for flow pattern near galleries are deduced, corresponding to the Boussinesqpartial differential equation. Besides, the author has derived simplified equationsfor computing flows into wells and galleries. The latter, in comparison with theDupuitForchheimer formulas, gives a higher yield, while the free surface curve isreasonably tangent to the horizontal water table at a point which moves fartheraway as time goes on. J. Kozeny first pointed out the phenomenon that the water depth in the groundon the wall will not be further lowered when it reaches one half of the depthbefore pumping. The author hereby proposes a theoretical proof of it on the basisof theorem of least work. Based upon these theories, formulas are proposed for maximum possible yieldof wells and galleries dug to horizontal impervious strata, to be used in preliminary estimations for hydrogeological workers.  1886年以来,杜布义福熙罕默(DupuitForchheimer)的井流及沟流的理论与计算用公式被世界各国广泛地应用着。公式假设地下水从远处沿着水平方向以定率流向井内或沟内,按作者分析这种假设并不符合实际情况,因之所得公式也不合理,用这些公式来推论水位降落或井径对於出水率的影响也没有合理的凭据。作者推论,井流或沟流的水实际上是从水面线以上,在其降落并扩大的过程中,排除了存积的水,沿着直垂方向所供应着的。因为从土壤颗粒的空隙间排除重力水,使减为薄膜水,每需时一两天,而水面上的毛细管水又是横向贯通并互相接济着,所以垂直供水可以维持很久,而潜流也决不会绝对稳定。根据这垂直供水的不定汉条件引出了沟流的水面线公式,结果符合蒲薪奈斯克的偏微分方程式。另外,作者又拟具了简化的井流及沟流计算用公式。这些公式和杜氏福氏公式比较,所得出水率较大,而水面线则合理地切於静水线,切点随着时程向远处移动。柯臣尼(J.Kozeny)最早指出井边地内水深不会低於静水深一半的现象,本文中作者根据最小工作定律试拟了理论的证明以支持之。根据这些理论,引出了从静水中抽水时井流、沟流最大可能出水率的公式,以供水文地质工作者初步估算之用。  During the Great Proletarian Cultural Revolution, a "threeinone" combination research group was organized from the workers, which formed the mainforce, cadres and technical staffs of SilicenSteel Sheet Works, Metallurgical Designing Institute and a research institute, for the recovery of sulphuric acid from the waste acid liquor of the steel works. Through the employment of our S203 anionexchange membrane by way of diffusiondialysis, a fairly satisfactory result was obtained with an economy of the... During the Great Proletarian Cultural Revolution, a "threeinone" combination research group was organized from the workers, which formed the mainforce, cadres and technical staffs of SilicenSteel Sheet Works, Metallurgical Designing Institute and a research institute, for the recovery of sulphuric acid from the waste acid liquor of the steel works. Through the employment of our S203 anionexchange membrane by way of diffusiondialysis, a fairly satisfactory result was obtained with an economy of the material as well as an improvement of the environment.  在无产阶级文化大革命中,由上海矽钢片厂、上海冶金设计院及中国科学院上海有机化学研究所组成的以工人为主体的工人、干部、科技人员三结合试验小组,对硅钢片酸洗废液通过用S203强碱性阴离子交换膜扩散渗析法进行硫酸的回收,既节约物资,又改善环境,获得了较为满意的结果。  This paper presents several new formulas for computing the natural frequency of vertical modes of main hull vibration, On the basis of energy method and transfer matrix method, combined with the experiments on ships, and to absorb the foreign experience, we intend to propose in this paper some approximate formulas for computing the natural frequency of vertical modes of main hull vibration: 1. in case of the elements of midship are known; 2. at the primary step of ship design. This paper may be used as... This paper presents several new formulas for computing the natural frequency of vertical modes of main hull vibration, On the basis of energy method and transfer matrix method, combined with the experiments on ships, and to absorb the foreign experience, we intend to propose in this paper some approximate formulas for computing the natural frequency of vertical modes of main hull vibration: 1. in case of the elements of midship are known; 2. at the primary step of ship design. This paper may be used as a reference for departments of ship designing, ship employment and ship inspection.  本文提出有关船体垂向总振动固有频率近似计算的新公式。本文在能量法、转移矩阵法的基础上，结合实船试验并吸取外国的经验，提出船体垂向总振动固有频率的近似计算公式： １．在中剖面要素已知的情况下； ２．在船舶设计的初始阶段。 本文可供船舶设计、使用和检验部门作参考。   << 更多相关文摘 
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