查询词典 constraints

After nearly 40 years of development, the genetic algorithm in the theoretical study and practical application was a great success, this paper genetic algorithm for solving the course timetabling problem, first discussed the impact of factors in the course arrangement, the main constraints, to solve goals and difficulties, and a complete mathematical model to describe the course arrangement.

经过近40年的发展，遗传算法在理论研究和实际应用中取得了巨大的成功，本文将遗传算法用于排课问题的求解，首先讨论了排课问题中的影响因素、主要约束条件、求解目标和难点，并用数学模型完整地描述了排课问题。

The timetabling problem is an NP-hard multiobjective combinatorial optimization problem with constraints.

排课问题是一个有约束的、多目标的组合优化问题，并且已经被证明为一个NP难问题。

A large number of algorithms have been proposed in the literature, which differ from each other based on the type of institution involved and the type of constraints. This paper first surveys the origin and the techniques, then presents the AI Planning-based algorithm to solve TTP. We implement the algorithm by SQL language, which is Timetabling Problem, and show that it is of great value by using the simulated data on it. At the end of this paper we describe other applied domains and its prospect.

时间表问题是一类应用非常广泛的研究课题，目前业出现了各种各样的解决时间表问题的方法，本文简要分析了近几十年时间表问题研究的历史和技术现状，提出了基于智能规划方法的时间表问题解决方案Plan TTP，并且我们用SQL语言实现了这一解决方案Plan TTP，通过对学校课程表的模拟实验证明该方法具有较大的使用价值，最后指出Plan TTPS的一些其他应用领域和发展前景等。

A homogeneous dielectric structures due to internal heating is different from the thermal deformation can not be freedom it will produce heat stress; a heated uniformly inhomogeneous media due to the different coefficient of thermal expansion will produce thermal stress; and thermal structure is more subject to external constraints is to generate thermal stress causes.

一个均匀介质结构由于内部受热不同，其热变形不能自由进行时，将会产生热应力；一个受热均匀的非均匀介质结构，由于热膨胀系数不同，也会产生热应力；而热结构受到外部约束更是产生热应力的原因。

Clinical experience and medical case is mainly reflected in cardiovascular disease such as hypertension, coronary heart disease, vertebrobasilar insufficiency diagnosis and treatment of diseases, as well as the western medicine for many adverse reactions more, the use of Chinese medicine treatment, combination differentiation of syndrome and treatment the adverse reactions for the constraints of the western medicine and so on.

临证经验及医案主要体现在对心血管疾病如高血压病、冠心病、椎基底动脉供血不足等疾病的诊治方面，以及针对西药不良反应多发，运用中医药辨证与治病相结合的治疗方法用于制约西药不良反应等方面。

The user is also able to define necessarygeometric constraints, so as to further control the surface shape.

用户也能够定义必要的几何约束来进一步控制曲面外形。

Based on these constraints for distance geometric computation, the structure of Blue Crab MT whose conformation has been measured by NMR was predicted.

以上述结构特征为基础，构建了用于结构计算的约束条件，建立了一种基于距离几何算法的蛋白质结构预测方法。

The similarity in outward appearance between Shenzhou and Soyuz arises partially from basic constraints on space flight.

相似外观神舟和联盟之间产生的部分从基本的限制太空飞行。

In prosperous Singapore, the People's Action Party allows opposition parties to operate within strict constraints.

在繁荣的新加坡，执政的人民行动党允许反对党参政，但必须接受严格限制。

As discussed above, the Pango shaping engine converts characters in a text item in a certain language into glyphs, and positions them according to the script constraints.

如上所述，Pango 造型引擎把一个特定语言的文本项中的字符转换成符号，并且按照文字的规则放置这些符号。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。