A Flow Shop with Compatibility Constraints in a Steelmaking Plant* Abstract We present a scheduling methodology for applications where the generation of schedules is constrained by antagonistic and vague Besides temporal and capacity constraints， compatibility constraints between consecutive jobs are We model the vague constraints and uncertain data by fuzzy set The importance of single jobs and the difficulty to schedule them is defined on the different constraints and is used to control the generation of A preliminary schedule is generated by considering the important jobs and those that are difficult to schedule Easy or not so important jobs are scheduled Finally， the achieved schedule is “repaired” until a schedule is found that achieves a given level of Since the goodness of solutions is rated by fuzzy sets， robust schedules achieve better evaluations than weak However， if no robust solution is found constraints will be This methodology is appropriate for applications in process engineering where uncertain knowledge is We explain the methodology with a case study from a steelmaking plant for high-grade steel 补充： Bidding for the Olympic Games， in a way， an image-creating The first and foremost thing is to let people fall in love with the city at first sight， attracting them by its unipue What image does Beijing intend to create for itself once it has the opportunity to host the 2008 Olympics? It is known to all that the Beijing Municipal Government has already set the theme for the future games: New Beijing， Great O For me， the 2008 Olympics will be a great green Olympics illuminated with two more special colors， yellow and First， yellow is a meaningful The Yellow River is China's Mother River and the descendants of the Yellow E This color has a special origin and great significance for the Chinese Beijing is the capital of New China and previously the capital for nine dynasties in Chinese So， yellow will naturally add splendor to the 2008 G Secondly， the 2008 Olympics will be a red Red is another traditionally cherished color for the whole We adore On big occasions， we like to decorate our homes in It is the color of double happiness， representing joyous moments， auspiciousness， enthusiasm and Red is one of the most suitable colors to describe the future of Beijing Beijing ， together with the whole country， is becoming more and more prosperous in the process of Should the 2008 Olympics be held in Beijing， the whole city will be a sea of red : the red torch，red flags， red flowers， and the radiant faces of millions of joyful Above all， the 2008 Olympics will be a green O Adding a green ingredient is essential in creating an appealing image， as we can't deny the fact that Beijing， at the moment， is not as green a city as what we like it to Striving for an environmentally appealing city has become a central task for all the citizens of B Big efforts have been made in pollution control， replanting and beautification of the According to a project entitled" The Green Olympic Action Plan"， between 1998 and 2007， Beijing， we have invested 100 billion RMB in preserving and protecting the Some 5 million trees and over 1 million acres of grass will be planted along the Fourth Ring R By then， the city's green area will make up 40% of its The city will also dredge its reservoirs used as a water supply to Beijing residents， controlling industrial pollution and moving out the 200 factories presently located within the city Certainly， all of this is no easy But I am sure that all of us have confidence that we will realize these green For now we have the full support and participation of the environmentally conscious Each citizen is showing great concern for every one of the steps the city government As the saying goes， United， we stand， and a green Beijing will be When our aspiration becomes a reality， it will be a unique O" New Beijing， Great Olympics"; will be weaved of these three superb colors: yellow， red and 追问： 用中文写清楚 这篇英文文章研究的是什么问题?这个问题是怎么研究的?发现了什么?这些发现意 味着什么? 谢谢 回答： 第一篇与电有关求采纳
With the development of science and technology， people's lives have been greatly There is no doubt that we benefit a lot from the scientific advancements in many different For instance， the invention of computers dramatically increases work efficiency and helps complete many difficult tasks that were impossible in the Apart from this， new discoveries and technology in medicine improve people's health， which allows them to enjoy a longer The progress of science also enlarges human's ablilities to explore the world around them， from up into space to deep under the Thanks to the development of science and technology， human society has enjoyed continuous prosperity and more However， just like a double-edged sword， science can cause problems It is known to all that the nuclear power， an environmentally friendly source of energy， can also be developed into a weapon of mass In addition， human cloning， which is expected to cure many serious diseases and save lives， may bring disasters of social As a matter of fact， most of the improvements in science are made at the cost of our precious natural resources and have done great harm to the environment where we live Therefore， how to deal with the progress of science and technology properly is worth our careful
