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主题 : 英语论文写作常用经典句型
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楼主  发表于: 2007-11-10   

英语论文写作常用经典句型

英语论文写作常用经典句型 l z-I[*bA  
n]i#&[*A(  
'xEK0~awD  
Beginning QW tDZ>  
1. In this paper, we focus on the need for m=SI *V  
2. This paper proceeds as follow. 7VL|\^Y`q  
3. The structure of the paper is as follows. m.<u !MI  
4. In this paper, we shall first briefly introduce fuzzy sets and related ?'_6M4UKa  
concepts _W^;a  
5. To begin with we will provide a brief background on the _*MK"  
Introduction NpaS2q-d  
1. This will be followed by a description of the fuzzy nature of the DTSf[zP/  
problem and a detailed presentation of how the required " m13HS  
membership functions are defined. is~2{:  
2. Details on xx and xx are discussed in later sections. &} { #g  
3. In the next section, after a statement of the basic problem, various kw E2V+2  
situations involving possibility knowledge are investigated: first, an 5n{d jP  
entirely possibility model is proposed; then the cases of a fuzzy  uxB`  
service time with stochastic arrivals and non-fuzzy service rule is *UJ4\  
studied; lastly, fuzzy service rule are considered. ]!&$&t8.  
Review |<5F08]v  
1. This review is followed by an introduction. 0Qq<h;8xEc  
2. A brief summary of some of the relevant concepts in xxx and xxx is ]Yw$A  
presented in Section 2. &*%x]fQ@  
3. In the next section, a brief review of the .... is given. 8|)^m[c&  
4. In the next section, a short review of ... is given with special regard O9ps?{g  
to ... P^Owgr=Y  
5. Section 2 reviews relevant research related to xx. m|F1_Gg z  
6. Section 1.1 briefly surveys the motivation for a methodology of =$fz</S=J  
action, while 1.2 looks at the difficulties posed by the complexity of kS8?N`2}LV  
systems and outlines the need for development of possibility ir/uHN@  
methods. mfN'+`r  
Body S#?2E8  
1. Section 1 defines the notion of robustness, and argues for its q\]X1N  
f?51sr  
importance. w2'q9pB+  
2. Section 1 devoted to the basic aspects of the FLC decision-making )Wr_*>xj  
logic. tP7<WGHd/  
3. Section 2 gives the background of the problem which includes xxx o3/o2[s  
4. Section 2 discusses some problems with and approaches to, kuD$]A Q`&  
natural language understanding. V< W;[#"  
5. Section 2 explains how flexibility which often ... can be expressed XhHgXVVGG<  
in terms of fuzzy time-window nOvR, 6  
6. Section 3 discusses the aspects of fuzzy set theory that are used in rR-[CT  
the ... [ gMn  
7. Section 3 describes the system itself in a general way, including {zvaZY|K"  
the ….. and also discusses how to evaluate system performance. \&hq$  
8. Section 3 describes a new measure of xx. 5@m ,*n&[  
9. Section 3 demonstrates the use of fuzzy possibility theory in the G?'^"ae"Z  
analysis of xx. ,3Q~X$f  
10. Section 3 is a fine description of fuzzy formulation of human `\62 iUN  
decision. u,So+%  
11. Section 3 is developed to the modeling and processing of fuzzy RI&O@?+U  
decision rules L AasmQ  
12. The main idea of the FLC is described in Section 3 while Section 4 E 6TeZ%g  
describes the xx strategies. EGUlLqP6e  
13. Section 3 and 4 show experimental studies for verifying the ,%*UF6B M  
proposed model. 1fS&KO{a  
14. Section 4 discusses a previous fuzzy set-based approach to cost 0N$7(.  
variance investigation. hhy+bA}  
15. Section 4 gives a specific example of xxx. l5{60$g  
16. Section 4 is the experimental study to make a fuzzy model of w~b:9_reY  
memory process. OX]$Xdb2:  
17. Section 4 contains a discussion of the implication of the results of QPDh!A3T  
Section 2 and 3. ?n `m  
18. Section 4 applies this fuzzy measure to the analysis of xx and **hQb$  
illustrate its use on experimental data. g8##Be  
19. Section 5 presents the primary results of the paper: a fuzzy set u]IbTJ'  
model .. `s CwgY+  
"#r)NYq`"|  
20. Section 5 contains some conclusions plus some ideas for further >9&31wA_  
work. (4+P7Z,Nc  
21. Section 6 illustrates the model with an example. ,I jZQ53q~  
22. Various ways of justification and the reasons for their choice are Qu61$!  
discussed very briefly in Section 2. ;t{q]"? W  
23. In Section 2 are presented the block diagram expression of a {|?^@  
whole model Food<(!.>  
of human DM system `pfIgryns  
24. In Section 2 we shall list a collection of basic assumptions which 4b2d (x)0X  
a ... scheme must satisfy. c  C3>Ff'  
25. In Section 2 of this paper, we present representation and k7CKl;Fck  
uniqueness theorems for the fundamental measurement of fuzziness t WI-  
when the domain of discourse is order-dense. ?R)]D:`  
26. In Section 3, we describe the preliminary results of an empirical _? gCOr  
study ~lw9sm*2v2  
currently in progress to verify the measurement model and to L.HeBeO  
construct membership functions. Y %"Ji[  
27. In Section 5 is analyzed the inference process through the two DzAZv/h76  
kinds of inference experiments... Nc:s+ o  
This Section ``-N2U5  
1. In this section, the characteristics and environment under which M13HD/~O  
MRP is designed are described. 3kn-tM  
2. We will provide in this section basic terminologies and notations 6X \g7bg  
which are necessary for the understanding of subsequent results. }|DspO  
Next Section W7S~~  
2. The next section describes the mathematics that goes into the oW3"J6,S  
computer implementation of such fuzzy logic statements. $h#sb4ek  
3. However, it is cumbersome for this purpose and in practical AFrJzh:V[  
applications the formulae were rearranged and simplified as 1R2IlUlzFr  
discussed in the next section. \ 2\{c1df  
4. The three components will be described in the next two section, jf9+H!?^N  
and an example of xx analysis of a computer information system will !jj`Ht)  
jeC=s~  
then illustrate their use. r_T)| ||v  
5. We can interpret the results of Experiments I and II as in the 6Tl6A>%s  
following sections. FdU]!GO- X  
6. The next section summarizes the method in a from that is useful s4|\cY`b-  
for arguments based on xx fkV@3sj  
Summary At Wv9  
1. This paper concludes with a discussion of future research P'W} ]mCD  
consideration in section 5. {EgSjxfmw  
2. Section 5 summarizes the results of this investigation. l1+l@r\  
3. Section 5 gives the conclusions and future directions of research. ;ArwEzo(  
4. Section 7 provides a summary and a discussion of some extensions :#rP$LSYC  
of the paper. '/d51  
5. Finally, conclusions and future work are summarized ,B <\a  
6. The basic questions posed above are then discussed and S$mv(C  
conclusions are drawn. `^M ]|7  
7. Section 7 is the conclusion of the paper. hkMeUxS  
Chapter 0. Abstract zoq;3a5cqB  
1. A basic problem in the design of xx is presented by the choice of a Bkcwl  
xx rate for the measurement of experimental variables. xGd60"w2  
2. This paper examines a new measure of xx in xx based on fuzzy w~3X m{  
mathematics which overcomes the difficulties found in other xx O. * 0;5  
measures. vrs  
3. This paper describes a system for the analysis of the xx. YI0 wr1N  
4. The method involves the construction of xx from fuzzy relations. bC{4a_B  
5. The procedure is useful in analyzing how groups reach a decision. I Xc `Ec  
6. The technique used is to employ a newly developed and versatile (NJ{>@&  
xx algorithm. )%(ZFn}  
7. The usefulness of xx is also considered. _"8n&=+  
8. A brief methodology used in xx is discussed. &#p1ogf:  
9. The analysis is useful in xx and xx problem. rOJ>lPs  
10. A model is developed for a xx analysis using fuzzy matrices. EC+t-:a]  
11. Algorithms to combine these estimates and produce a xx are E7uIur=g!  
9b. kso9.  
presented and justified. M.}9)ho   
12. The use of the method is discussed and an example is given. oo'9ZE/%  
13. Results of an experimental applications of this xx analysis -#\T  
procedure are given to illustrate the proposed technique. /}:{(Go  
14. This paper analyses problems in h&"9v~  
15. This paper outlines the functions carried out by ... [gW eD  
16. This paper includes an illustration of the ... }">r0v!3  
17. This paper provides an overview and information useful for Ev fvU:z  
approaching *C*J1JYp+  
18. Emphasis is placed on the construction of a criterion function by UP]( 1lAf  
which the xx in achieving a hierarchical system of objectives are Mh%{cLM  
evaluated. %i9S"  
19. The main emphasis is placed on the problem of xx /~LE1^1&U  
20. Our proposed model is verified through experimental study. *yZ6"  
21. The experimental results reveal interesting examples of fuzzy 4D65VgVDM  
phases of: xx, xx @?B+|*cm  
22. The compatibility of a project in terms of cost, and xx are likewise ne#dEUD  
represented by linguistic variables. |MNSIb&,W  
23. A didactic example is included to illustrate the computational VDxm|7  
procedure E\iK_'#  
Chapter 1. Introduction Ym'h vK  
Time %. 1/ #{  
1. Over the course of the past 30 years, .. has emerged form intuitive oW~W(h!  
2. Technological revolutions have recently hit the industrial world K V5 '-Sv1  
3. The advent of ... systems for has had a significant impact on the !vz'zy)7  
4. The development of ... is explored )fJ"H q  
5. During the past decade, the theory of fuzzy sets has developed in a  y|LHnNQ  
variety of directions *Y>w0k  
6.The concept of xx was investigated quite intensively in recent years =~:IiK/#  
7. There has been a turning point in ... methodology in accordance kpgvAKyx  
with the advent of ... Nd0tR3gi7  
8. A major concern in ... today is to continue to improve... & bTCTDZh  
9. A xx is a latecomer in the part representation arena. 4 \z@Evm  
V60L\?a  
10. At the time of this writing, there is still no standard way of xx {!Qu(%  
11. Although a lot of effort is being spent on improving these 93*csO?Db  
weaknesses, the efficient and effective method has yet to be )^:H{1'  
developed. ::Zo` vP  
12. The pioneer work can be traced to xx [1965]. ^Iw$ (  
13. To date, none of the methods developed is perfect and all are far #*h\U]=VS  
from ready to be used in commercial systems. 9evr!=":  
Objective / Goal / Purpose eB0exPz%  
1. The purpose of the inference engine can be outlined as follows: qzW3MlD  
2. The ultimate goal of the xx system is to allow the non-experts to ,z&S;f.f  
utilize the existing knowledge in the area of manual handling of loads, 1Vpti4OmU  
and to provide intelligent, computer-aided instruction for xxx. ZvRa"j  
3. The paper concerns the development of a xx 0? {ADQz  
4. The scope of this research lies in b 3x|Dq.  
5. The main theme of the paper is the application of rule-based F`g(vD >  
decision making. +M"j#H  
6. These objectives are to be met with such thoroughness and R"W}\0k  
confidence as to permit ... &=lc]sk  
7. The objectives of the ... operations study are as follows: H<d~AurX)J  
8. The primary purpose/consideration/objective of O`Tz^Q /D  
9. The ultimate goal of this concept is to provide V k{;g  
10. The main objective of such a ... system is to &g|[/~dIr  
11. The aim of this paper is to provide methods to construct such =RB {.%  
probability distribution. kqBZsfF  
12. In order to achieve these objectives, an xx must meet the }n^Rcz6HeO  
following requirements: C]!2   
13. In order to take advantage of their similarity X%yG{\6:  
14. more research is still required before final goal of ... can be }$_@yt<{W@  
completed NW1Jr/  
15. In this trial, the objective is to generate... GK$[!{w;  
16. for the sake of concentrating on ... research issues |nNcV~%~  
17. A major goal of this report is to extend the utilization of a recently 7ws<' d7/  
developed procedure for the xx. = wz}yfdrC  
!1l~UB_  
18. For an illustrative purpose, four well-known OR problems are `*s:[k5k  
studied in presence of fuzzy data: xx. L-|l$Ti"  
19. A major thrust of the paper is to discuss approaches and B0Df7jr%`>  
strategies for structuring ..methods r qjq}L)  
20. This illustration points out the need to specify X.b8qbnq[  
21. The ultimate goal is both descriptive and prescriptive. nQc,^A )I  
22. Chapter 2. Literature Review bv4umL /  
23. A wealth of information is to be found in the statistics literature, L;3%8F\-.  
for example, regarding xx 6ld4'oM  
24. A considerable amount of research has been done .. during the |^Iox0A  
last decade w~@"r#-  
25. A great number of studies report on the treatment of D /QLp3+o  
uncertainties associated with xx. 6=f)3!=  
26. There is considerable amount of literature on planning Ksx-Y"  
27. However, these studies do not provide much attention to k!Yc_ZB:*l  
uncertainty in xx. QXb2jWz  
28. Since then, the subject has been extensively explored and it is S)U *1t7[  
still under investigation as well in methodological aspects as in :qE.(k1@5  
concrete applications. y-hTTd"{  
29. Many research studies have been carried out on this topic.  I0 mp[6  
30. Problem of xx draws recently more and more attention of system it}h8:^<  
analysis. GlJ[rD  
31. Attempts to resolve this dilemma have resulted in the -_ 9k+AV  
development of BdD]HXB|_  
32. Many complex processes unfortunately, do not yield to this TnQ>v{Rx  
design procedure and have, therefore, not yet been automated. 9Jwd*gevV  
33. Most of the methods developed so far are deterministic and /or ~9]vd|  
probabilistic in nature. "}3sL#|z  
34. The central issue in all these studies is to /5sn*,  
35. The problem of xx has been studied by other investigators, :A8r{`R'N  
however, these studies have been based upon classical statistical 'pt (  
approaches. )+L|<6JXA  
36. Applied ... techniques to 54p{J  
37. Characterized the ... system as ejd_ 85$  
q|ce7HnK  
38. Developed an algorithm to ! t!4CY  
39. Developed a system called ... which neU=1socJ  
40. Uses an iterative algorithm to deduce ^t3>Z|DiB^  
41. Emphasized the need to uqcG3Pi  
42. Identifies six key issues surrounding high technology fnX[R2KZ  
43. A comprehensive study of the... has been undertaken !/,oQoG  
44. Much work has been reported recently in these filed ~Z5AImR|  
45. Proposed/Presented/State that/Described/Illustrated/ |pHlBzHj  
Indicated/Has shown / showed/Address/Highlights -1 dD~S$  
46. Point out that the problem of Zv}F?4T~:  
47. A study on ...was done / developed by [] N7s0Ua'-v  
48. Previous work, such as [] and [], deal only with f:M^q ;  
49. The approach taken by [] is wnC-~&+6  
50. The system developed by [] consists /rpr_Xw}  
51. A paper relevant to this research was published by [] =bh: U90y  
52. []'s model requires consideration of... lZAGoR;0Ra  
53. []' model draws attention to evolution in human development 3u j|jwL  
54. []'s model focuses on... >\K=)/W2  
55. Little research has been conducted in applying ... to lq.:/_m0  
56. The published information that is relevant to this research... -o~zb-E  
57. This study further shows that fYuSfB+<  
58. Their work is based on the principle of {*;8`+R&  
59. More history of ... can be found in xx et al. [1979]. gE#|eiu  
60. Studies have been completed to established Hx6O Dj[-  
61. The ...studies indicated that }-:B`:K&  
62. Though application of xx in the filed of xx has proliferated in cS Lj\'`b  
recent years, effort in analyzing xx, especially xx, is lacking. (ORbhjl  
Problem / Issue / Question zx<t{e7  
63. Unfortunately, real-world engineering problems such as 8{0XqE~ix=  
manufacturing planning do not fit well with this narrowly defined D,=~7/g  
model. They tend to span broad activities and require consideration "yH?df24  
of multiple aspects. {3KY:%6qj  
64. Remedy / solve / alleviate these problems Y 22Ai  
67. ... is a difficult problem, yet to be adequately resolved 3]1 ! g6  
ue3 ].:  
68. Two major problems have yet to be addressed A)~ oD_ooQ  
69. An unanswered question e,#w* |  
70. This problem in essence involves using x to obtain a solution. _t,aPowX  
71. An additional research issue to be tackled is .... }s?3   
72. Some important issues in developing a ... system are discussed d(}? \|  
73. The three prime issues can be summarized: [BdRx`  
74. The situation leads to the problem of how to determine the ... PO5,lcBD<  
75. There have been many attempts to M5RN Z%  
76. It is expected to be serious barrier to /*gs]  
77. It offers a simple solution in a limited domain for a complex hTO5*5]0zP  
problem. t0cS.hi  
1. There are several ways to get around this problem. "E7<S5 cr  
2. As difficult as it seems to be, xx is by no means new. B{0]v-w  
3. The problem is to recognize xx from a design representation. (soTkH:#  
4. A xx problem can trace its roots to xx. _=x*yDPG}  
5. xx [1987] used a heuristic approach to simplify the complexity of w8 S pt  
the problem. N/lEfy<&g:  
6. Several problems are associated with them. P;(@"gD8z5  
7. Although some progress has been made in this area, at least two 5fs,UH  
major obstacles must be overcome before a fully automated system :?EZ\WM7  
can be realized. {pi_yr 3  
8. Most problems in practice are complicated e`a4Gr  
9. More problem surface here. [x?9< #T  
10. Hamper effort toward a xx system RJ3uu NK7  
11. In order to overcome the limitations due to incomplete and )Dms9:  
imprecise xx knowledge, a xx program has been developed, which $#%R _G]  
bases its knowledge upon the statistical analysis of a sample x]Nx,tt  
population of xx o S{hv:)>  
12. The above difficulties are real challenges faced by researchers 5KbPpKpd  
attempting to develop $EIKi'!8  
13. This type of mapping raises no controversy to the issue of A'}!'1  
membership function determination. 3 P75: v  
14. However, attempts to quantify the xx have met both theoretical 0 GFho$f  
and empirical problems. ~U7Bo(EJp  
TqS s*as5  
15. It has become apparent that in order to apply this new -1$z=,q'  
methodological framework to real-world problems and data, we have ]ZR` 6|"VO  
to pay attention to the problems of xx and xx. B(FM~TVZ  
Chapter 3. Proposed methodology a` 9pHH:7Q  
Assumption i,;a( Sy4  
1. In the case when the assumption of a xx seems to be too T6?03cSE  
restrictive or inadequate, the formulation with Fuzzy termination Uv?^qe0=  
time, i.e. given by a fuzzy set in the space of control stages, may be ]p4?nT@]  
applied. Q|VBH5}1O  
2. We assume here the fuzzy constraints to be state-dependent, and &&jQ4@m}j  
the fuzzy goal to be the same for all the control states, xx, which 1Xh@x  
stems from the problem's nature. t0xE&#4  
3. An approach to the solution of this problem is presented under the "`S?q G  
assumption that the sampling rate Decision can be made prior to the eC 2~&:$L  
execution of the experiment, as opposed to being made while the ze LIOw  
experiment is in progress. `CL\ -  
4. Another assumption made above is that there are precise odds at 247vU1  
which the expert is indifferent. _h,X3P   
5. Main simplifying assumptions are: <%|u1cn~!v  
6. This, in our view, is a questionable assumption. a3:45[SO4e  
Outline / Structure / Module 5&A' +]  
1. An outline of the research #;1RStb:zj  
2. Information is incorporated within the scheme &{#6Z  
3. Is built into ... structure iB~dO @  
4. A nice modular structure. Z,-TMtM7  
5. The principles of ... are applied as modularized criteria Hit )mwfYE  
Classification Qi qRx  
1. A xx system comprises three main components: wvxqgXnB\  
2. Must decompose the original .. into a set of .. =_6 Q26  
3. Consists of the following steps: 3qV~C{ S  
4. This is summarized in the following steps: F7=\*U  
VY|U B7,C  
5. Can be broadly classified into the following areas: : .{d,)G  
6. Can be characterized by its function of effectively processing the V sL*&Fk  
7. Can allow further breadth of application of ...into more a>ye  
8. The following steps should be followed HFYe@2r  
9. xx can be classified by a different ways. KZ=5"a  
10. Based on the xx, one may classify xx into the following: !af;5F  
11. This catalog may change due to wear, breakage, and purchasing. ,>kXn1 ,  
System Oz xiT +  
1. Unlike many conventional program, expert systems do not A-^B ?E  
usually deal with problem for which there is clearly a right or wrong b+d mJ]c  
answer. A~s6~  
2. The system consists of both ... and ... wSALK)T1{  
3. The system has a hierarchical modular architecture organized on 'I[xZu/8yg  
three levels. >;s2V_d  
4. expert system domains are area of expertise 2@&"*1(Xu  
5. To develop a xx system for xx, the following factors must be UU#$Kt*frR  
considered: %yR 80mn8  
6. The system has been developed / designed to determine ILHn~d IC  
7. The system has proven to be able to 5["n] i  
8. The domain in which an expert system operates is a particular COH.`Tv{*  
domain SS;'g4h\6  
9. The system comprises a ... with L'"od;(6R  
10. The system is [feature-oriented ] / based on the ... technique y}W*P#BDO  
11. The system environment must be relatively stable ;~}!P7z  
12. The system is utilized to generate, load, store, update and tK\ $LZ  
retrieve ... \qJ^ n %  
13. The development of a xx system has two stages: xx stage and xx |A H@W#7j  
stage. PJh97%7  
14. The most essential part of .. system is the ... .4=A:9  
15. The successful developments in ESs have made them an (Q|Y*yI  
important tool in the development of z+?48 }  
16. An automated system was developed for 52*KRq o  
17. In this case, the system can be considered to be generative. I=8MLv  
t\ 9Y)d  
18. An interactive automatic ... system O(T6Y80pU  
19. A …. is commonly thought of as a truly integrated .. system ve*6WDK,H  
20. Should be capable of being generated from a ... system >>>MTV f  
21. xx is an important part of the integrated system. ?zK>[L  
22. The model consists of four rule bases, each of which addresses a  Z Mf,3  
separate problem in the hierarchy of scheduling decision. N)YoWA>#bF  
23. The rule bases are linked to each other in a chin-like manner in xQzXl  
the sense that the consequent of one rule base constitutes a part of pf_`{2.\uO  
the antecedent of the next rule base. 42 rIIJ1A  
24. The rule base consists of all possible combinations of the `6G:<wX  
linguistic terms associated with the linguistic variable of the jTok1k  
antecedent of a rule. WQY\R!+  
Computer System /.m}y$@GV  
1. The system has been implemented using Prolog language in an 8j@ADfZ9  
MS-DOS environment. Prolog was chosen because it offers a well V8z*mnD  
known and flexible environment in which fuzzy reasoning may be ^}hSsE  
easily implemented. &. "ltB  
2. The current version of the xx program when compiled with  d|$-Sz  
WATFOR77 results in an executable code of about 270K bytes. Hd~fSXFl  
Typical run time, when run on a XX computer (an IBM compatible A@I3:V  
machine) operating at 4.77 Mhz with 640K RAM, ranges from 10 min `AEL e_  
to 2h, depending on the size (or complexity) of the problem. h,2?+}Fn  
3. Time consuming procedures have been implemented in g);.".@"  
C-language and directly linked to the Prolog environment. [N*`3UZk"  
4. The xx process, once the xx's data has been entered, requires 7Y*Q)DDy  
approximately 180 seconds. !Y]%U @4}  
5. It should be noted that the computation was done with a 20 Hhz, unkA%x{W;  
80386..209;based microcomputer equipped with a 80387 math \1#!% I=.  
co-processor. J y0TVjA  
6. The computer programs used for the analyses, one based on the xx {Gr"oO`&"  
method and the other based on the new method, were written in _zFJ]7Ym.)  
FORTRAN with a compiler that supports the math co-processor. >qynd'eToR  
7. Lisp, Prolog give maximum flexibility but also maximizes ~DK=&hCd!  
Bd*\|M  
development time. ZY> u4v.  
l Internal representation is the way a model is represented in the /)xQ# yfX  
computer. Z`bo1,6>  
l An interactive menu-driven procedure is used in this study }{ "RgT-qG  
l Shell can be develop very fast at the cost of time fairly severe fuA 8jx  
limitations. kpO+  
l While there is no measurable saving of time for the case involving #Xd#Nc j  
five criteria, the saving is dramatic for the case involving 10 criteria |0a GX]Y  
-- the computation time reduces from 10 hr 40 min to about 1 min. 5%(xZ  6  
l This combination is being implemented in an objected-oriented i]n ?zWo_h  
programming environment (Smalltalk-80 system) to solve problems aOo;~u2-=  
encountered in construction xxx. Q##L|*Qy  
Method / Approach / Study / Process Model / Equation /Algorithm / 7!E7XP6,~>  
Rule / Formula / Technique v@E/?\k"  
l A discussion is presented of a problem-solving system s$;IR c5!6  
l To improve the efficiency of the method, the following approach h2Jdcr#@FF  
may be applied. I~I$/j]e`  
l In order to an investigation was made to find the causes of the HA%r:Px  
l Although large collections of rules and equations have been  al:c2o  
complied, none are generally accepted J*CfG;Y:  
l This approach will be explained and discussed thoroughly in the ^5![tTJ  
body of the report. k34!*(`q  
l This can be accomplished by 2wG4"  
l This algorithm to compute the total cost can be described step by * E3 c--  
step as follows: z@S39Xp==  
l The above preliminary analysis has provided important Z ]WA-Q6n  
information #T8$NZA  
l Various methods have been proposed for selecting an optimum... tpi>$:e  
l These concepts have been applied to x2g P, p-  
l On the basis of the concept mentioned above, )z#M_[zC>  
l This can be achieved by c;e2= A  
l This fact suggests that a new concept f~D> *<L4-  
l This was accomplished by taking ... ]xIfgSq  
p@7[w@B\c  
l The preparatory stage is very time consuming process. ihJC)m`Hbl  
l Test are performed for validity, completeness, and compatibility #dgWXO  
l There is little hope of achieving successful ... K9y!ZoB  
l There has been an increasing awareness of the potential of using -cHX3UAEI  
most ..so far made have not taken this approach, with the exception sR. ecs+  
of 5Y&s+|   
l Only a few studies can be found. _8'FI_E3  
l It is a very tedious process to go through +$+'|w  
l It is only when .. has been completed that .. may be effected \ns#l@B  
l The entire interpretation process is conducted in one's head. ?DC3BA\)  
l These approaches are sometimes very tedious. ^Q?I8,4}  
l Several techniques can be used 5)yQrS !{:  
l A polynomial parametric model can be written as [the <Z c:  
following]/[follows]: $W8  
l A xx model is constructed/formulated using xx. 1& k_&o  
l A xx model represents an xx by its xx.  F%6`D  
l A process decision model captures the logic essential to pA V}hB  
l From the equation above, xx is equal to the summation of xx mdOF0b%-]  
times the ... eD, 7gC-  
l The validity of a xx model can be checked using Euler's formula. `C`_2y8  
l Given a model, one can mathematically determine whether ... or ... 3 SQ_9{  
l Equations for xx need to be derived and implemented in the e3wFi,/@  
system. gT R:9E:B  
l A number of heuristic rules have been developed for Wv"[,5 Z13  
l Optimum .. techniques can be made more reliable by ... so that i)0*J?l=  
l An algorithm based on the characteristic ... is used to determine ~`MGXd"o  
l Euler's formula states the following: 48n>[ FMSR  
l The completed model should agree with the formula. KW.S)+<H&  
l For manufacturing purposes, a detailed and precise model of the '8>#`Yba  
object is necessary sf?D4UdIH  
l Engineering design models are very well defined; therefore,  { Lt \4h  
l To keep the domain narrow enough to be implementable, yet wide AdB5D_ Ir  
enough to 6yF4%Sz9  
be useful. / GJ"##<  
9h$-:y3  
Point of View q01zN:|-1  
l from an implementation standpoint, HF5aU :M  
l From the point of view of this application, }qW%=;!  
l From this point of view, Zadeh suggested an inference rule named ~?6V-m{>#  
xxx (CRI for short). 0pu])[P]_[  
l Information is the meaningful interpretation and correlation of U;6~]0^K  
some aggregation of data in order to allow one to make decisions. .dp~%!"Sn,  
l From a practical point of view, the computational aspects of an G_[|N>  
FLC require a simplification of the fuzzy control algorithm. 89@89-_mC  
l The use of a hammer to insert screws, although partly effective, J C1T033 r  
tends to distort, destroy, and generally defeat the purpose of using a Tc\^=e^N?  
screw [Kusiak AI Implications for CIM p.129] u3 ?+Hu|*T  
Justification Z[AJat@H  
l We choose the so called xx in our experiment because it has ^$_ifkkLz  
received wide acceptance and can akBR"y:~:H  
l Prolog was chosen because it offers a well known and flexible j>?H^fB  
environment in which fuzzy reasoning may be easily implemented. 0c7&J?"wE  
l The rationale behind this is that it can be much easier for an 0wZLkU_(  
estimator to rate a cost as high than to attempt to place a dollar yi# Nrc5B  
value on the estimate. ',6QL4qV/  
l This strategy has been widely used in fuzzy control applications R.|fc5_"+  
since it is natural and easy to implement. cdP+X'Y4D  
l A function definition expresses the membership function of a Y: KB"H  
fuzzy set in a functional form, typically a bell-shaped function, etc. XT~JP  
Such functions are used in FLC because they lead themselves to \#2,1W@  
manipulation through the use of fuzzy arithmetic. k%:]PQjYT  
l It should be noted that in our daily life most of the information on w69`vK  
which our decisions are based is linguistic rather than numerical in 1oj7R7  
nature. Seen in this perspective, fuzzy control rules provide a natural UH%?{>oRh  
framework for the characterization of human behavior and decisions AUS?P t[w  
analysis. )@1_Dm@0b  
l Many experts have found that fuzzy control rules provide a x gaN0!  
"@GopD  
convenient way to express their domain knowledge. This explains XV%L6x  
why most FLCs are based on the knowledge and experience which _*bXVJ ]  
are expressed in the language of fuzzy "if-the" rule. F2oY_mA   
Chapter 4. Examples 8dIgw  
Example/ Data Yq`r>g  
l The data used in the following example was taken from an N1P [&lR  
experiment in which xx was measured between x and x using a xx ./5|i*ow  
technique. X@af[J[cQ  
l The data consists of over xx measurements. U G ^6I5  
l An example of xx is discussed and the control rules of xx are "M_X9n_  
compared with a xx {U^mL6=&v  
l Examples of complex processes to which this technique may be vj?9X5A_  
applied are xx, xx, etc. <T  
l The following example is constructed only for the purpose of ttZ!P:H2  
illustrating the computational procedure discussed. D9#e2ex]  
l This example clearly demonstrates that the profile of an individual GE~mu76%  
xx, or a very small group of xx, with no enough data to be studied MfeW|   
statistically, can be meaningfully analyzed by fuzzy possibilistic "-v9V7KCM  
methods. vhWj_\m  
l There is no space here to go into detail on all these methods, but Q(V c/  
deserve a mention and the bibliography will point to detailed <Er|s^C  
references for those wishing this level of detail. @f*/V e0.  
l Note that the golf ball spotting example is used throughout the "-ZuH   
paper.  9l{r&]  
Comparisons 68 -I2@&  
l As well, the pros and cons of these representations from a process g[H7.  
planning point of view will be discussed. aWe H,A%  
l The method of using xx to implement xx described by Zadeh w:M faN*  
(1973) appeared more suitable .~W7{SY[  
l As discussed [in the previous section]/[preciously], 20%xD e  
"5K x]y8  
Relation bmt2~!  
l We can not invert F' directly because it defines a many-to-one ##k== 'dR  
mapping. @zd)]O]xH?  
l The relationships appear very complicate Gt6$@ji4u  
l Lifting tasks involve complex and imprecise relationship between )2bPu[U  
the task variables and the human operator's characteristics. U6.$F#n  
l These methods are based on the relationship between ... and ... 8 A%)m  
l The fundamental concept of a fuzzy rating language is that we can 9-bDgzk   
establish a relationship among terms such as high, medium, and low, [0MVsc=  
and then modify these relationships. m:p1O3[R  
l This article will thus mention the latter as well as the former. 1S.nqOfx  
l The former two bear a close relation to a fuzzy Cartesian product. hz\7Z+$L_  
Importance oWx! 'K6]V  
l The emphasis is on an implementation of a general approach to r%_)7Wk*  
rule based decision making. AO8`ItNZdT  
Consideration / Attention h\D y(\  
l Careful evaluation is necessary to ensure 9O@ eJ$  
l Such a formulation does not change further considerations. Q3z-v&^E9  
l Considerable attention has been paid to @Cw<wrem  
l Attention should be paid to an important finding of this zbi[r  
investigation. sbkWJy  
l Caution should be exercised in this process to avoid ... /o8h1L=  
l Primary consideration is given to ... components, though others e-{k;V7b  
can be accommodated q jUQ2d  
l After ... has been defined by ..., a carefully analysis is carried =<a`G3SY!  
out/performed to determine DFR.F:O%  
l A number of factors such as ...need to be taken into consideration 1_GUi  
before making the appropriate decision. ;'R{b$B;|  
l It should be noted that C4Bh #C  
l It is important to point out that ... _j <46^  
l These considerations have heightened interest in the possibility of vxZz9+UbF  
providing ... 3VA Lrb;  
oDM}h +  
l We should stress the fundamental importance of the xx HPr5mWs:  
Chapter 5. Results. mY;Y$fz;xL  
Advantages / Disadvantage  SvDVxK  
l One of the major advantages of this new measure of xx is that it  +?nW  
can be applied to the experimental study of 5XA6IL|/l  
l One advantage of using a .. is the ease of preparing it. ,C(")?4aJ  
l The xx system is versatile J/R=O>  
l It has a very fast decision making process h_x"/z&  
l All the algorithms involve mostly logical operations. |2 {y'?,  
l It can be easily and without additional cost implemented in a CKNH/[ ZR,  
microprocessor-based environment. 8Ay#6o  
l It can reduce the waste of designing from scratch. &xrm;pO  
l The advantages of using a xx to represent xx are the following: waO*CjxE:  
l However, xx is not without its shortcomings. j4+hWalm  
l In most cases, the xxx shows an improvement over the existing Bb8lklQ  
xxx. 1th|n  
l Compared to the existing xx, the impacts of the xx are generally { S4?L8  
reduced by 5% to 9%. '1^\^) &q  
l The "best case" results shows a savings of 6% to 9%. 9'td}S  
l Most of the existing works based on xx approach can only +Rxf~m(pV  
recognize a xx . tlI3jrgw  
l Most of the above methods are computational expansive and OUnt?[U\  
limited to xx. K (Z d-U  
l Some other advantages of xx are the following: Wi hQ j  
l The problem is the limitation of this method to a limited domain of $zy Y"yWRZ  
parts. a?M<r>  
l It proved limited in application because it demanded precision in WTSY:kvcCY  
system modeling that was impossible in practice.   VG q'  
l There are advantages to be gained in the structuring of costs and L8/o9N1  
benefits, the use of xx, :7@"E W  
l The disadvantages of this method are also disadvantages of _I3j 7f,V  
conventional xx approaches. 2AzF@Pi^z  
qYGnebn@\  
l This combines the best features of both techniques % 7/XZQ  
l Hopefully, this tool can be as the reference framework of for :*)~nPVV  
developing a xx platform, and helping the administration, marketing, P\*-n"  
and knowledge management activities in virtual communities. 573wK~9oMh  
Results ?K|PM <A  
l An improvement on the result shown above can be made by based +\\*Iy'xK  
on the data provided "|.>pD#0&  
l Discussion of these theories is beyond the scope of this review Bwn9ZYu#r  
l Based on the information contained in this m/cbRuPWgP  
l The result can be categorized into nine classes q'hMf?_  
l The results are illustrated by an example *{)[:;  
l The experimental results for each xx time are reported in Table 2. -Z4J?b  
l From the results obtained so far, it seem that 0r_8/|N#  
l Because of the inaccuracy of the ..., a conclusion cannot be drawn Rr|VGtg  
as ~; Ss)d  
l Although much effort has been made to., this reality is far from #f zvK+  
completion. QKE$>G  
l The results indicate that the total benefits are higher than the <E&1HeP  
total costs. |.*),t3 (w  
l Their results may then serve as guidelines for lower level models, zVGjXuNa  
less fuzzy and more detailed. ~i fq_Ag.  
Chapter 6. Conclusion }Xrs"u,  
l From the discussion, one may conclude that ... agM.-MK  
l Form the above discussion, the conclusion can be reached that T9*\I TA  
l The conclusions drawn are also valid ~Rs|W;  
l In conclusion to this, it becomes obvious that the problem of xx 8rGW G  
lies not only in... e\%QHoi>u  
l We have attempted to introduce some concepts associated with a k#c BBrY  
theory of c^6v7wT5  
xx based on fuzzy sets. x +q"%9.c  
l Considerable more work, hopefully, will be done in this area pyT+ba#  
l A fuzzy set procedure is proposed to solve xx selection problems c1jHg2xim  
/A9Mv%zjk  
interwoven with imprecise data v|?hc'Fj  
l Employing the compositional rule of inference, the assessment of 6mep|![6  
the xx compatibility in achieving prescribed xx projectiles in any k]qZOO}  
level of the hierarchy is made possible. .sbU-_ij@U  
l This paper has presented a theoretical and experimental study of PUltn}M  
the xx process and xx concept. o*qEAy ?  
l The experimental research results will hopefully serve as useful r[TS#hQ  
feedback information for improvements for xx work. "<v_fF<Y  
l The scope of this contribution was to introduce a xx method. j72cS Rv  
l In general, fuzzy sets theory provides an alternative foundation YUT"A{L  
for xx analysis in a fuzzy environment. $- =aqUU  
Future Research _8 vxb  
l Thus, first extension of the approach could be, hO;bnt%(  
l Present some cues for a further approach from Fuzzy Sets Theory 8kW9.   
application to vEtogkFA"  
l Some improvements to the scheduling aspect of the model may %f6l"~y  
be brought through additional levels in the hierarchy for more $#]?\psf  
detailed representation of the scheduling activity. J:?t.c~$o  
Tables and Figures O<6/0ub&+h  
l Figure 7-1 sketches these relationships. n\,TW&3  
l The graphical representation of these functions is shown in Figure Wn0r[h5t  
1. E OtrrfT&  
l The xx may be depicted as in Figure 1. f910drg 7  
l Figure x shows the schematic diagram of the &U4]hawbOU  
l Figure 1 though 2 provide a ... that GVn9=[r  
l the architecture of this expert system for .... is illustrated in Figure A'[A!NL%  
2. OiM{@  
l Figure 2 gives the outline of an ... system |i|YlWQS  
l Table shows the ]3d&S5zU  
l as shown in Table 1 and 2 \M>AN Z}  
l This concept is illustrated in Figure 2 3qpk Mu3  
l At the top of Table xx are shown two blocks of data. L'aMXN O  
aj(M{gFq~  
l Each table or matrix has constructs xx through xx as ZmmuP/~2K  
row-headings, ]\#RsVX  
xx through xx as column-headings. ]"/ *7NM  
l A table of .. is developed and significant recommendations are {GHGFi`Z  
made. Xo%Anqk  
CONJUGATION f{3FoN= z  
To Indicate Addition ^<y$+HcH  
l additionally, again, also, and then, as can be easily understood, n0vPW^EQ  
besides, equally important, especially, finally, for the same reason, q8kt_&Ij  
first, further, furthermore, in addition, last, likewise, moreover, next, ioa 1n=j  
second, third, too, evidently, obviously, roughly speaking, broadly L {B#x@9tQ  
speaking wV5<sH__  
To Indicate Cause and Effect H.>KYiv+  
l accordingly, as a result, consequently, for this reason, hence, in HnY: gu  
short, otherwise, then, therefore, thus, truly jWU)y)$  
To indicate Comparison i^QcW!X&  
l in a like manner, likewise, similarly , alternatively @&EP& $*  
To Indicate Concession <n6/np!  
l after all, although this may be true, at the same time, even though, R0/~) P  
even so , I admit, naturally, of course OmoY] 8N}  
To Indicate Contrast [,1j(s`N5  
l and yet, at the same time, but, for all that, however, yet, in fact, in \{UiGC K  
contrast, in the real life, in spite of, nevertheless, notwithstanding, 97Q!Rot  
normally, on the contrary, on the other hand, still, traditionally, /1OhW>W3eH  
rather, unfortunately, hOwVm;:  
To Indicate Time Relationships: ol:_2G2xQ  
after a short time, afterwards, as indicated earlier, as long as, as soon E3gQ`+wNg?  
Xt7uCs  
as, at last, at length, at the moment, at that time, at the same time, ]I}' [D  
before, earlier, currently, immediately, in the meantime, in recent }RyYzm2  
years, lately, later, meanwhile, often, of late, presently, recently, wEkW=  
soon, shortly, since, thereupon, temporarily, therefore, until, when, ^T<<F}@q  
while _Y~+ #Vc  
To Indicate Special Features or Examples: Fh?q;o Ej  
for example, for instance, incidentally, indeed, in fact, in other words, leyX: +  
in particular, in practice, specifically, that is, to illustrate, in this G4=v2_]  
respect, theoretically, as mentioned before / above =XWi+')  
To Indicate Summary: "C0oFRk  
in brief, in conclusion, in short, in summary, on the whole, to a2g15;kM  
conclude y\@XW*_?  
, in general, to summarize, to sum up, as a result, ultimately, y t<K!=7&  
VERB PHASE |9(uiWf  
l build a .. model 0&w.QoZY(  
l build up the key link aIm\tPbb  
l began a new era in ... 3N<FG.6  
l can be regarded as / achieved / used to/for / found / obtained mk0rAN  
through jt;,7Ek  
l can result in 9 s>JdAw?  
l carries out ... tasks S(rA96n  
l production information in order to simultaneously 3|@Ske1%Y  
l contains all information necessary to describe paiF ah  
l do not make use of production information O@EpRg 1  
l deals with g y &B"`  
l end with failure  C9*'.~  
l fetch the information from the model directly #Ok*O r  
l has great potential / yet to be resolved / spurred the  DMf:u`<  
development of / 6{1c S  
been recognized as :}j{NM#  
l BE aimed at / built up / carried out by / essentially concerned F7L+bv   
p+A#t~K  
with / considered to be the key technology / associated with each UB=I>  
feature of a compo *R8q)Q  
site component / cable of / currently implemented for / VBsS1!g  
demonstrated by an example / finally reached / made equal to / q(_pk&/  
equivalent to / more suitable to / oriented to / interpreted as / {3!v<CY'  
pointed out / potentially of great benefit in the complex task of / 6x6PP}IX  
shown in / used to effectively guide the search lS 9rgq<n  
l makes use of K^w(WE;db  
l make up >8HcCG  
l meets the needs of real life production,/ the current demands ,%yjEO  
placed upon it .J'}qkz~  
l must be justified 8dNwi&4  
l point out :q<8:,rP  
l play an important role lqTTTk  
l relates to nM>oG'm[n  
l rely on %!mJ nc%  
l satisfy the needs s(o{SC'tt  
l determine the total requirements for the ... 2I* 7?`  
l uses ... as a key to search for... hjtkq .@  
l without relying on b*\K I  
l will be available/ performed/ overlooked 2Xys;Dwx  
NOUN PHASE yIC8Rl  
l a basic technical function of waz)jEk  
l a critical need imv[xBA(d  
l a key / principle feature of ]Nz~4ebB  
l a substantial impact on u^8:/ ~8K  
l an intensive review was conducted TL-sxED,,D  
l an increasing need for expanding the application of .... }1VxMx@  
l an important component / function / aspect / issue $6kVhE!;  
l each rule is numbered in sequence sKVN*8ia  
l each of these involves ^I*</w8  
l for this calculation, it is necessary to define ,u8)g; 8s  
l in the physical environment / integration of 61L  vT"  
`z=U-v'H)D  
l in the reality of situations where … ~8L*N>Y  
l many aspects of <5 X?6*Qvr  
l most past efforts have been spent on ... %5Hsd  
l common sense to a well studied and documented technical field. SR7$m<0t*  
l sources of additional information on ... are listed &MKG#Y}  
l systematic and rationally structured format {>PN}fk2QP  
l the basis on which a range of ...operations can be established is l?2(c  
shown _H@Y%"ZHJ6  
l THE basic philosophy / principles of / key element / general 6;6a.iZ  
hypothesis / candidate list of / concept of ... has attracted wide lO3W:,3_a  
interest / function is concerned with / heart / impact / nature / role [!H2i p-  
/ task of / kernel functions ywWF+kR_  
l the number of parts needed to ;43Ye ^=  
l the above statement means that __o`+^FS  
l the output data is passed to BB@I|) 9O(  
l the proposed method / underlying principle feU]a5%XZ  
l the recommendations made in this report, if implemented, should K;moV| j  
l this information resides in Ja<pvb  
l this process is composed of ... different ... operation GG%X1c8K  
l along with the use of hp=TWt~  
l concerning general aspects of Au3> =x`  
l due to *qdf?' R  
l for later use in generating..., Hbwjs?Vq?]  
l in turn, ."b=dkx  
l IT IS believed / noted / assumed / suggested / shown / quite gSLwpIK%  
evident / appears / implies that / intended for / of no important to 6Q S[mWU  
l it can be claimed/concluded that ;ELQIHnD"  
l it demonstrates the decisions required of SxV(.i'  
l it also provides information to .. $T7hY$2Q l  
l it becomes essential to w}n:_e  
l let ... be the probability that L$zI_ z  
l once... is written, it is compiled into... s!S,;H  
l suppose it is observed that $mFsf)1]]?  
l this is because rx`G* k{X  
]} z ;!D>  
l this results in a #:Z"V8n'  
l upon completion of the ... analysis, DF D5">g@  
l when the knowledge is of mathematics or quantum physics, it will 63:0Vt>hZ^  
also be <jd S0YT  
recorded in books and papers Q]X0 O10  
l selection of rules for using the tools, for generating operation +o&E)S}wP  
plans, +wd} '4)  
is another matter of preference, since practice varies greatly. ]P/eg$u'I  
l for the sake of convenience {m5tgVi&  
l correct decision to be reach /_~b~3 {u  
l keeping the number of rules to a minimum. #sit8k`GR8  
l a good process plan will result exhibiting several characteristics: G3QB Rh{  
l practical solutions B.fL gQK0  
l because of rather small job lot sizes }%k,PYe/  
l Backward reasoning can be used to answer the question "should @~6A9Fr  
milling tool be select" different level of knowledge in the realm of )f#@`lf[<  
process planning
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沙发  发表于: 2007-11-14   
Very useful, thank u!
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