Consider the following set of processes, with the length of the CPU-burst time given in milliseconds: The processes are assumed to have arrived in the order P1, P2, P3, P4, P5, all at time 0.a. Draw four Gantt charts illustrating the execution of these processes using FCFS, SJF, a nonpreemptive priority (a smaller priority number implies a higher priority), and RR (quantum = 1) scheduling. b. What is the turnaround time of each process for each of the scheduling algorithms in part a? c. What is the waiting time of each process for each of the scheduling algorithms in part a? d. Which of the schedules in part a results in the minimal average waiting time (over all processes)?
第1题
With the following information, please quote the unit price on CFRC3 and CIFC3 basis (in USD per set) respectively. Jiqing Export Company offered 400 dozen mens down jackets to an American company. The jackets were purchased at CNY 225 per piece (13% VAT included, tax refunded at the rate of 13%). The charges and expenses involved in the whole transaction included: Inland transport charge: CNY 1200 Commodity certification charge: CNY 200 Export clearance charge: CNY 100 Warehousing charge: CNY 500 Other charges: CNY 700 Ocean Freight: USD 1,020 from Qingdao to NEW YORK Commission: 5% of invoice value Insurance should be covered for 110% of the invoice value at the rate of 0.6%. The expected profit was 10% of the invoice value and the current foreign exchange rate is CNY 7.00/USD.
第2题
第3题
Read the following mini case and answer the questions: Topic: IKEA Timing: June 15, 2017 News: China Daily; Reuters Characters: Mr Torbjorn Loof, Chief Executive, Inter Ikea Group Now testing what does digital shopping mean? The furniture megastore IKEA has its own e-commerce services, however, partnering with a site like Amazon, which offers legendary free shipping for its Prime members, could bring Ikea's products to a whole new group of consumers. Even die-hard fans of the brand could perceivably shop online, avoiding the winding, labyrinth-like stores and fill up a virtual cart at their Ikea-furnished homes. Exorbitantly high shipping costs and a limited selection of products are limiting Ikea's own e-commerce platform. Considering that furniture is pretty big, it can't cost just a few bucks to ship something like a couch or dining room table, especially when the parts required to assemble it all, come in more than one box. Inter Ikea Group Chief Executive, Torbjorn Loof told Reuters. "We will test and pilot, to see 'what does this mean, what does digital shopping look like in future? We have one great advantage and that is that we design, produce, and distribute our own unique range." This would be the very first time that Ikea's experimented with selling through channels outside of its own operations. Additionally, Reuters reports that Ikea is planning to open smaller stores in different metropolitan areas to provide access to more customers. Give short answers to the following questions: 1. If you are Mr Torbjorn Loof, what your decision would be: should IKEA enter into partnership with Amazon? 2. How IKEA should engage in digital selling activities in China?
第4题
第5题
The categories of thought determine the categories of language.
A.J.B. Watson
B.None.
C.Sapir and Whorf
D.Plato and Aristotle
第6题
1. Explain the following terminologies: The generalized Hooke's law Strain energy per unit volume, for normal and shearing stress: Incremental theories: Total strain theories: Ture stress: True strain: 2. A cubic metal, with the edge length of 200 mm, elastic modulus E = 207×1000 MPa, and Poisson’s ratio ν = 0.3, is compressed along Z direction, and the metal expands along X and Y directions. If the compression along Z direction is 200 MPa, in order to limit the expansion along X and Y directions within 0.05 mm, what is the compression should be applied along X and Y directions?
第7题
Please proofread the following Swift Credit with the given terms & conditions in a sale confirmation, and list all requests for amendment. (1) Swift Credit FROM: DBS BANK LTD, TOKYO BRANCH TO: BANK OF CHINA SHANGHAI BRANCH, CHINA 27: SEQUENCE OF TOTAL 1/1 40A: FORM OF DOCUMENTARY CREDIT IRREVOCABLE 20: DOCUMENTARY CREDIT NUMBER CRE1437 3lC: DATE OF ISSUE 181101 40E: APPLICABLE RULES UCP 600 31D: DATE AND PLACE OF EXPIRY 190131 JAPAN 50: APPLICANT EASTERN TRADING COMPANY OSAKA, JAPAN 59: BENEFICIARY SHANGGHAI DONGHAI TEXTILES TRADING CORP. SHANGHAI, CHINA 32B: CURRENCY CODE, AMOUNT HKD 21 600.00 41A: AVAILABLE WITH.. BY.. ANY BANK BY NEGOTIATION 42A: DRAWEE DBS BANK LTD, TOKYO BRANCH 42C: DRAFTS AT 30 DAYS AFTER SIGHT 43P: PARTIAL SHIPMENTS ALLOWED 44E: PORT OF LOADING/AIRPORT OF DEPARTURE SHANGHAI, CHINA 44F: PORT OF DISCHARGE/AIRPORT OF DESTINATION YOKOHAMA, JAPAN 44C: LATEST DATE OF SHIPMENT 190131 45A: DESCRIPTION OF GOODS AND/OR SERVICES + 67,200 YARDS OF DOVE PRINTED SHIRTING AS PER CONTRACT NO. PS1234 + AT HKD 3 PER YARD CFRC2 KOBE/OSAKA, JAPAN 46A: DOCUMENTS REQUIRED + SIGNED COMMERCIAL INVOICE IN TRIPLICATE + SIGNED DETAILED PACKING LIST IN TRIPLICATE + FULL SET OF CLEAN SHIPPED ON BOARD BILLS OF LADING MADE OUT TO ORDER QUOTING CRE1437, MARKED FREIGHT COLLECT + ONE ORIGINAL MARINE INSURANCE POLICY FOR 130 PCT OF THE TOTAL INVOICE VALUE COVERING FPA AS PER OCEAN MARINE CARGO CLAUSES OF PICC, DATED JANUARY 1, 1981 71B: CHARGES ALL CHARGES AND COMMISSIONS OUTSIDE JAPAN ARE FOR BENEFICIARY'S ACCOUNT (2) Major terms and conditions in the related S/C. 卖 方: 上海东海纺织品贸易公司 SHANGGHAI DONGHAI TEXTILES TRADING CORP. 买 方: 东方贸易公司 EASTERN TRADING COMPANY 商品名称:鸽牌印花细布 DOVE PRINTED SHIRTING 规 格: 30×36, 72×69, 35×42码 数 量: 67,200码 单 价: 每码3.00港元CFR横滨(YOKOHAMA),含佣金2% 总 金 额: 201,600港元 装 运 期: 2019年1月31号前中国港口至日本横滨,允许分批装运 付款条件: 凭不可撤销、见票后30天付款的远期信用证付款,于装运期前一个月开到卖方并于上述装运期后15天内在中国议付有效。 合同号码: PS1234
第8题
The following questions pertain to the image characteristics of all types of mirrors discussed in this unit - plane mirrors, concave mirrors, and convex mirrors. Use your understanding of the object-image relationships for these three types of mirrors to answer the questions. The diagram below shows a spherical surface that is silvered on both sides. Thus, the surface serves as double-sided mirror, with one of the sides being the concave and one being the convex side. The principal axis, focal point, and center of curvature are shown. The region on both sides of the mirror is divided into eight sections (labeled M, N, P, Q, R, S, T, and W). Five objects (labeled 1, 2, 3, 4, and 5) are shown at various locations about the double-sided mirror. Use the diagram to answer the questions #1-6.1. The image of object 1 would be located in section ______. M、 N、 P、 Q、 R、 S、 T、 W 2. The image of object 2 would be located in section ______. M、 N、 P、 Q、 R、 S、 T、 W 3. The image of object 3 would be located in section ______. M、 N、 P、 Q、 R、 S、 T、 W 4. The image of object 4 would be located in section ______. M、 N、 P、 Q、 R、 S、 T、 W 5. The image of object 5 would be located in section ______. M、 N、 P、 Q、 R、 S、 T、 W 6. The double-sided mirror would cause virtual image to be formed of objects ________. M、 N、 P、 Q、 R、 S、 T、 W 7. How can a plane mirror, concave mirror, and/or convex mirror be used to produce an image that has the same size as the object? 8. How can a plane mirror, concave mirror, and/or convex mirror be used to produce an upright image? 9. How can a plane mirror, concave mirror, and/or convex mirror be used to produce a real image? 10. The image of an object is found to be upright and reduced in size. What type of mirror is used to produce such an image?
第9题
The following paragraphs are about the present bikes-sharing fever across China. From the paragraphs, you can find that there is a growing concern about the problems accompanying bike-sharing. Do an oral presentation of NO LESS THAN 300 words, in which you should: (1) Summarize the views in those paragraphs; (2) Express your opinion towards the topic. Marks will be awarded for content relevance, content sufficiency, organization and language quality. Failure to follow the above instructions may result in a loss of marks. Please hand in your recording through the icourse before 5 P.M. March 22nd. Bikes-sharing fever across China A revival of bike has swept across China, with an increasing number of people choosing cycling instead of driving. Start-ups like Ofo and Mobike has boosted bike-sharing schemes. The bikes they provided are equipped with GPS, and those bikes are gaining ground among Chinese as they can be easily unlocked with a smartphone and left anywhere in public. At the same time, Chinese service operators are trying to address problems accompanying like vandalism and theft. For example, Mobike sets 100-point credit scores for each user, with points taken in the case of bad behavior. Once a score drops below 80, bike rental is increased to 100 yuan per 30 minutes, up from 0.5-1 yuan. However, those bikes are not only available for who uses apps, bikes with technical issues, or simple password are easy to take away to use privately or sell; different producers replace or vandalize bikes of other brands then put their own bikes instead. Those problems emerges not only in China, but also other places around the world. I guess it's more a discussion of national quality and profit distribution than bikes. Should government be involved in? Or should bike-sharing continue?
第10题
I. Read the following statements and choose the correct answer. There is no denying that students should learn something about how computers work, just as we expect them at least to understand that the internal-combustion engine (内燃机) has something to do with burning fuel, expanding gases and pistons (活塞) being driven. For people should have some basic idea of how the things that they use do what they do. Further, students might be helped by a course that considers the computer’s impact on society. But that is not what is meant by computer literacy. For computer literacy is not a form of literacy (读写能力); it is a trade skill that should not be taught as a liberal art. Learning how to use a computer and learning how to program one are two distinct activities. A case might be made that the competent citizens of tomorrow should free themselves from their fear of computers. But this is quite different from saying that all ought to know how to program one. Leave that to people who have chosen programming as a career. While programming can be lots of fun, and while our society needs some people who are experts at it, the same is true of auto repaid and violin-making. Learning how to use a computer is not that difficult, and it gets easier all the time as programs become more “user-friendly”. Let us assume that in the future everyone is going to have to know how to use a computer to be a competent citizen. What does the phrase “learning to use a computer” mean? It sounds like “learning to drive a car”, that is, it sounds as if there is some set of definite skills that, once acquired, enable one to use a computer. In fact, “learning to use a computer” is much more like “learning to play a game”, but learning the rules of one game may not help you play a second game, whose rules may not be the same. There is no such a thing as teaching someone how to use a computer. One can only teach people to use this or that program and generally that is easily accomplished. 3. Learning to use a computer is getting easier all the time because ________.
A、A) programs are becoming less complicated
B、B) programs are designed to be convenient to users
C、C) programming is becoming easier and easier
D、D) programs are becoming readily available to computer users
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