We argue that rough sets are necessary in the light of the Platonian concept of ideal mathematical objects. We show how rough sets have been present in concept formation, diagnosis, classification and other reasoning tasks. We present examples indicating that the intuitive idea of a rough set ...
Dyed stones are often not colorfast. Some will lose their color with prolonged exposure to sunlight. Water-soluble dyes can transfer from a stone into water or onto hands, clothes, or other objects. Dyed stones usually fade if they are placed outdoors in exposed locations. Vendors who sell dy...
[inaudible] tell you that their dog somehow knows when they're ill or upset, and, according to researchers who study dog cognition, those pet owners are right. Dogs do know when their human companions are having a rough time...
In fact, the Abell catalogue is used as a starting point for astronomers who study these objects. One of the reasons his scheme has been so widely accepted is because of his sample size. With all the clusters in his sample, he could determine the different characteristics of clusters. ...
objects of special historical interest, including ancient Egyptian mummies, an Aztec serpent, and the Rosetta Stone. 具有特殊历史意义的物品,包括古埃及木乃伊、阿兹特克蛇和罗塞塔石碑。 In fact, London has museums on every subject, from trains to fashion. 事实上,从火车到时尚,伦敦有各种主题的博物馆...
Meanwhile, most young people in the West are expected to leave what could be life's most momentous decision—marriage—almost entirely up to luck. 同时,人们认为西方的大多数年轻人把婚姻这一可能是人生最重要的决定几乎完全交由命运来安排。 柯林斯高阶英语词典 He drinks what is left in his glass ...
What are the particles contained in the sunlight? What happens to light when it is reflected? What occurs when light passes through matter? The materials through which objects can be seen, but not clearly are known as what? What material reflects heat the best?
These discrete spaces are the projective objects in the category of topological spaces, since in this category the concept of an epimorphism agrees with that of a surjective continuous map. Thus can be viewed as the unique (up to isomorphism) projective object in this category that has a bijec...
Packaging of objects insures that they are protected against vibration, temperature, shock, compression, deterioration in quality etc. Packing and packaging also protect the products against theft, leakage, pilferage, breakage, dust, moisture, bright light etc. ...
rough sketch.a sketch drawn at the crime scene, that contains an accurate depiction of the dimensions of the scene & shows the location of all objects having a bearing on the case. finished sketch. a precise rendering of the crime scene, usually drawn to scale. ...