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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 m^s2kB4A[  
Q24:G  
\?ws0Ax  
Beginning p<nBS" /  
1. In this paper, we focus on the need for LB ^^e"  
2. This paper proceeds as follow. R*5;J`TW  
3. The structure of the paper is as follows. 0FR%<u  
4. In this paper, we shall first briefly introduce fuzzy sets and related ,,j=RG_  
concepts <rI$"=7  
5. To begin with we will provide a brief background on the ~ M>z O#U6  
Introduction *UxB`iA  
1. This will be followed by a description of the fuzzy nature of the \ A UtGP  
problem and a detailed presentation of how the required ifCGNvDR  
membership functions are defined. (pK4i5lT  
2. Details on xx and xx are discussed in later sections. s3RyLT   
3. In the next section, after a statement of the basic problem, various %v)'`|i  
situations involving possibility knowledge are investigated: first, an X@4d~6k?  
entirely possibility model is proposed; then the cases of a fuzzy MifgRUe  
service time with stochastic arrivals and non-fuzzy service rule is >2{HH\  
studied; lastly, fuzzy service rule are considered. bQQ/7KM  
Review 5GxM?%\  
1. This review is followed by an introduction. ]4~D;mv  
2. A brief summary of some of the relevant concepts in xxx and xxx is _SW a3O#'  
presented in Section 2. j1CD;9i)%  
3. In the next section, a brief review of the .... is given. hLD;U J?S  
4. In the next section, a short review of ... is given with special regard d7zE8)DU7  
to ... EUS]Se2  
5. Section 2 reviews relevant research related to xx. s H[34gCh;  
6. Section 1.1 briefly surveys the motivation for a methodology of ,#;ahwU~s  
action, while 1.2 looks at the difficulties posed by the complexity of H)fo4N4ii  
systems and outlines the need for development of possibility htSk2N/  
methods. K'/x9.'%  
Body \> dG'  
1. Section 1 defines the notion of robustness, and argues for its Lcb5 9Cs6e  
Q>*K/%KD  
importance. LKY Q?  
2. Section 1 devoted to the basic aspects of the FLC decision-making phSP+/w  
logic. 2 g==98>cg  
3. Section 2 gives the background of the problem which includes xxx G ~\$Oq8  
4. Section 2 discusses some problems with and approaches to, 8rNxd=!  
natural language understanding. Tj+WO6#V  
5. Section 2 explains how flexibility which often ... can be expressed %LW~oI.  
in terms of fuzzy time-window @h8~xs~DG  
6. Section 3 discusses the aspects of fuzzy set theory that are used in U]3JCZ{]0E  
the ... []^>QsS(X  
7. Section 3 describes the system itself in a general way, including 3=I Q  
the ….. and also discusses how to evaluate system performance. \ bE~iz3b9  
8. Section 3 describes a new measure of xx. <[~M|OL9q,  
9. Section 3 demonstrates the use of fuzzy possibility theory in the >s~`K^zS  
analysis of xx. Bqj *{m  
10. Section 3 is a fine description of fuzzy formulation of human vM8]fSc  
decision. }]@ "t)"  
11. Section 3 is developed to the modeling and processing of fuzzy "0mR*{nF  
decision rules 8t; nU;E*  
12. The main idea of the FLC is described in Section 3 while Section 4 Ceem R>\t  
describes the xx strategies. s5@^g8(+C  
13. Section 3 and 4 show experimental studies for verifying the !;oBvE7Kh  
proposed model. Yr@@ty  
14. Section 4 discusses a previous fuzzy set-based approach to cost 35et+9  
variance investigation. <#i'3TUR  
15. Section 4 gives a specific example of xxx. W X9BS$}0  
16. Section 4 is the experimental study to make a fuzzy model of ='azVw%_  
memory process. V#Eq74ic  
17. Section 4 contains a discussion of the implication of the results of $ :/1U$  
Section 2 and 3. *2Kte'+q  
18. Section 4 applies this fuzzy measure to the analysis of xx and R lu;l  
illustrate its use on experimental data. _1QNO#X  
19. Section 5 presents the primary results of the paper: a fuzzy set C_o.d~xm  
model .. {Gy_QRsp,  
&kGSxYDk%  
20. Section 5 contains some conclusions plus some ideas for further nLQJ~("  
work. ?/D#ql7  
21. Section 6 illustrates the model with an example. Fej$`2mRH  
22. Various ways of justification and the reasons for their choice are 9i@*\Ada  
discussed very briefly in Section 2. pw8'+FX  
23. In Section 2 are presented the block diagram expression of a /on p<u  
whole model ]T1"3 [si  
of human DM system .x&>H  
24. In Section 2 we shall list a collection of basic assumptions which Fc Cxr@  
a ... scheme must satisfy. i?]!8Ji  
25. In Section 2 of this paper, we present representation and Aka`L:k  
uniqueness theorems for the fundamental measurement of fuzziness #frhO;6  
when the domain of discourse is order-dense. UA^E^$f:  
26. In Section 3, we describe the preliminary results of an empirical FM5$83Q  
study se-}d.PwL  
currently in progress to verify the measurement model and to }[|"db  
construct membership functions. /W;;7k  
27. In Section 5 is analyzed the inference process through the two  GY>0v  
kinds of inference experiments... !eW<4jYB  
This Section Y\lBPp0{\v  
1. In this section, the characteristics and environment under which 6eb5q/  
MRP is designed are described. db`<E <  
2. We will provide in this section basic terminologies and notations 7Sokn?~i  
which are necessary for the understanding of subsequent results. &]5<^?3  
Next Section `g#\ Ws  
2. The next section describes the mathematics that goes into the PUI.Un2C_  
computer implementation of such fuzzy logic statements. {^~{X$YI  
3. However, it is cumbersome for this purpose and in practical #ws6z`mt  
applications the formulae were rearranged and simplified as s;A]GJ  
discussed in the next section. =w8*n2  
4. The three components will be described in the next two section, wH<S0vl   
and an example of xx analysis of a computer information system will d;f,vN(  
4>(?R[:p)  
then illustrate their use. E-r/$&D5mP  
5. We can interpret the results of Experiments I and II as in the Dq\#:NnKvx  
following sections. 3p7*UVR"  
6. The next section summarizes the method in a from that is useful H94$Xi"Bd  
for arguments based on xx eudPp"Km  
Summary y`'Ly@s  
1. This paper concludes with a discussion of future research z\fk?Tj<ro  
consideration in section 5. D0uf=BbS  
2. Section 5 summarizes the results of this investigation. CnAhEf)b  
3. Section 5 gives the conclusions and future directions of research. y:1?~R  
4. Section 7 provides a summary and a discussion of some extensions qWo|LpxWt  
of the paper. `OduBUI]]  
5. Finally, conclusions and future work are summarized ')_jK',1  
6. The basic questions posed above are then discussed and JG4 Tb{F=  
conclusions are drawn. wd u>3Ch"y  
7. Section 7 is the conclusion of the paper. MECR0S9  
Chapter 0. Abstract Dt8eVWkN~  
1. A basic problem in the design of xx is presented by the choice of a NAL%qQ  
xx rate for the measurement of experimental variables. #E>f.:)  
2. This paper examines a new measure of xx in xx based on fuzzy S7-?&[oeJ  
mathematics which overcomes the difficulties found in other xx F/mD05{  
measures. x'}{^'}/  
3. This paper describes a system for the analysis of the xx. 5C/u`{4]Hg  
4. The method involves the construction of xx from fuzzy relations. KPKby?qQ^  
5. The procedure is useful in analyzing how groups reach a decision. K{HdqmxL.I  
6. The technique used is to employ a newly developed and versatile `lr\V;o!  
xx algorithm. }* *^ g:  
7. The usefulness of xx is also considered. nLYyS#  
8. A brief methodology used in xx is discussed. BC&Et62*  
9. The analysis is useful in xx and xx problem. ~bvx<:8*%  
10. A model is developed for a xx analysis using fuzzy matrices. ,v(G2`Z  
11. Algorithms to combine these estimates and produce a xx are _Tev503  
$yRbo '-  
presented and justified.  RtK/bUa  
12. The use of the method is discussed and an example is given. ))u$j4 V  
13. Results of an experimental applications of this xx analysis J>x)J}:;  
procedure are given to illustrate the proposed technique. jt;68SA P  
14. This paper analyses problems in dA )7d77  
15. This paper outlines the functions carried out by ... 9NKZE?5P|D  
16. This paper includes an illustration of the ... BYP,}yzA  
17. This paper provides an overview and information useful for 4{*K%pv\  
approaching rXvvJIbi  
18. Emphasis is placed on the construction of a criterion function by 8ec~"vGLz~  
which the xx in achieving a hierarchical system of objectives are vP? "MG  
evaluated. v||8Q\d  
19. The main emphasis is placed on the problem of xx C'kd>LAGu  
20. Our proposed model is verified through experimental study. w ~Es,@  
21. The experimental results reveal interesting examples of fuzzy u]CW5snz  
phases of: xx, xx ,c}Q;eYc3  
22. The compatibility of a project in terms of cost, and xx are likewise j =[Td   
represented by linguistic variables. 7RTp+FC]  
23. A didactic example is included to illustrate the computational rQ. j$U  
procedure ytr~} M%  
Chapter 1. Introduction 866n{lyL  
Time :E]A51  
1. Over the course of the past 30 years, .. has emerged form intuitive '9H]S Ew  
2. Technological revolutions have recently hit the industrial world B4_0+K H  
3. The advent of ... systems for has had a significant impact on the h,0mJj-ma  
4. The development of ... is explored V1;n5YL  
5. During the past decade, the theory of fuzzy sets has developed in a g@KS\.m]  
variety of directions :8jHN_u  
6.The concept of xx was investigated quite intensively in recent years !SKEL6~7  
7. There has been a turning point in ... methodology in accordance OV Iu&6#  
with the advent of ... 5(tOQ%AQ  
8. A major concern in ... today is to continue to improve... &-s!ko4z  
9. A xx is a latecomer in the part representation arena. Ga"$_DyM  
mf^(Tq[  
10. At the time of this writing, there is still no standard way of xx 3Q Zw  
11. Although a lot of effort is being spent on improving these ~g ~z"!K  
weaknesses, the efficient and effective method has yet to be {pm>F}Cwy  
developed. \{P(s:  
12. The pioneer work can be traced to xx [1965]. `4g m'C  
13. To date, none of the methods developed is perfect and all are far =0MW+-  
from ready to be used in commercial systems. {{SeD:hx  
Objective / Goal / Purpose /t(dhz&xN  
1. The purpose of the inference engine can be outlined as follows: #=q)>+\  
2. The ultimate goal of the xx system is to allow the non-experts to b-;+&Rb  
utilize the existing knowledge in the area of manual handling of loads, +}J2\!Jw  
and to provide intelligent, computer-aided instruction for xxx. OtrO"K  
3. The paper concerns the development of a xx 9Psy$  
4. The scope of this research lies in PGOi#x  
5. The main theme of the paper is the application of rule-based Lg sQz(-  
decision making. :W? 7J"  
6. These objectives are to be met with such thoroughness and 7fgA)dU:K  
confidence as to permit ... k]] (I<2  
7. The objectives of the ... operations study are as follows: #y~^!fdp9  
8. The primary purpose/consideration/objective of ^$4d'  
9. The ultimate goal of this concept is to provide JD^(L~n]  
10. The main objective of such a ... system is to )K4 |-<i  
11. The aim of this paper is to provide methods to construct such ?A3pXa  
probability distribution. x%jJvwb^|  
12. In order to achieve these objectives, an xx must meet the $,bLK|<hi  
following requirements: 7^ A;.x  
13. In order to take advantage of their similarity :CNHN2 J  
14. more research is still required before final goal of ... can be .>Gq/[c0|  
completed |-bSoq7t  
15. In this trial, the objective is to generate... #Wey)DI  
16. for the sake of concentrating on ... research issues Ig-9Y;hdmn  
17. A major goal of this report is to extend the utilization of a recently ;3 s_#L  
developed procedure for the xx. =cs;avtL  
Ix93/FAn  
18. For an illustrative purpose, four well-known OR problems are ; H9d.D8  
studied in presence of fuzzy data: xx. @ kK${  
19. A major thrust of the paper is to discuss approaches and U N1HBW;  
strategies for structuring ..methods x00"d$!  
20. This illustration points out the need to specify O['gp~P"  
21. The ultimate goal is both descriptive and prescriptive. 0zCe|s.S&  
22. Chapter 2. Literature Review g 7res  
23. A wealth of information is to be found in the statistics literature, rhO ]4A  
for example, regarding xx 7^4F,JuJO  
24. A considerable amount of research has been done .. during the J*Dj`@`4`g  
last decade u>Z;/kr  
25. A great number of studies report on the treatment of Z"<aS&GH  
uncertainties associated with xx. W 'hE,  
26. There is considerable amount of literature on planning e; 5 n.+m  
27. However, these studies do not provide much attention to DBYD>UA  
uncertainty in xx. ]X?~Cz/wl  
28. Since then, the subject has been extensively explored and it is 4# MvOjA5[  
still under investigation as well in methodological aspects as in L ']EYK5  
concrete applications.  uh*b[`e  
29. Many research studies have been carried out on this topic. <"Z]S^>$  
30. Problem of xx draws recently more and more attention of system p:U9#(v)  
analysis. Z;M]^?  
31. Attempts to resolve this dilemma have resulted in the FVNxjMm,  
development of h~)oiT2v  
32. Many complex processes unfortunately, do not yield to this Kf2Ob 1  
design procedure and have, therefore, not yet been automated. fEf ",{I  
33. Most of the methods developed so far are deterministic and /or p8o ~  
probabilistic in nature. %B5.zs]Of  
34. The central issue in all these studies is to %p6"Sg*  
35. The problem of xx has been studied by other investigators, m:CiXM   
however, these studies have been based upon classical statistical Sr Z\]  
approaches. c-.t8X,5(~  
36. Applied ... techniques to Vui5ZK  
37. Characterized the ... system as FZ'|z8Dm  
t"k6wv;Tq  
38. Developed an algorithm to WW82=2rJ9  
39. Developed a system called ... which Y+ 75}]B  
40. Uses an iterative algorithm to deduce YzJ\< tkp  
41. Emphasized the need to =$;i  
42. Identifies six key issues surrounding high technology l&2A]5C  
43. A comprehensive study of the... has been undertaken ImO\X`{  
44. Much work has been reported recently in these filed ^vmT=f;TM  
45. Proposed/Presented/State that/Described/Illustrated/ | Z'NMJU  
Indicated/Has shown / showed/Address/Highlights ]o`qI#{R~R  
46. Point out that the problem of @9~a3k|  
47. A study on ...was done / developed by [] n*~=O'  
48. Previous work, such as [] and [], deal only with qXPjxTg{[  
49. The approach taken by [] is b)RU+9x &  
50. The system developed by [] consists MUsF/1  
51. A paper relevant to this research was published by [] }z:g}".4  
52. []'s model requires consideration of... ]7 " W(  
53. []' model draws attention to evolution in human development S\=j; Uem  
54. []'s model focuses on... ; mnV)8:F  
55. Little research has been conducted in applying ... to COPH)Bdq.  
56. The published information that is relevant to this research... o&}!bq]  
57. This study further shows that  U, _nEx  
58. Their work is based on the principle of d\&{Ev9v  
59. More history of ... can be found in xx et al. [1979]. )jk X&7x  
60. Studies have been completed to established Wm>[5h%>  
61. The ...studies indicated that mOji\qia  
62. Though application of xx in the filed of xx has proliferated in <y#-I%ed  
recent years, effort in analyzing xx, especially xx, is lacking. *ub]M3O  
Problem / Issue / Question 6d/;GyG  
63. Unfortunately, real-world engineering problems such as N>qOiw[  
manufacturing planning do not fit well with this narrowly defined 'q%56WAJ  
model. They tend to span broad activities and require consideration xL8r'gV@  
of multiple aspects. Sc03vfmo"N  
64. Remedy / solve / alleviate these problems V|GH4DT=  
67. ... is a difficult problem, yet to be adequately resolved _~V7m  
wG;#L7%  
68. Two major problems have yet to be addressed ` K -j  
69. An unanswered question Gx Z'"x  
70. This problem in essence involves using x to obtain a solution. ~aKM+KmtPH  
71. An additional research issue to be tackled is .... 4C@ .X[r  
72. Some important issues in developing a ... system are discussed ~)>O=nR  
73. The three prime issues can be summarized: _}MO.&Y  
74. The situation leads to the problem of how to determine the ... 9G njJ  
75. There have been many attempts to 1aEM&=h_W  
76. It is expected to be serious barrier to 4n6EkTa  
77. It offers a simple solution in a limited domain for a complex (-k`|X"  
problem. tQ!p<Q= $)  
1. There are several ways to get around this problem. OZ{YQ}t{^1  
2. As difficult as it seems to be, xx is by no means new. },r30`)Q  
3. The problem is to recognize xx from a design representation. ,/{(8hn  
4. A xx problem can trace its roots to xx. .Up\ 0|b  
5. xx [1987] used a heuristic approach to simplify the complexity of ]O%wZIp\P  
the problem. c6 O1Z\M@\  
6. Several problems are associated with them. &f12Q&jY7  
7. Although some progress has been made in this area, at least two P#e1?  
major obstacles must be overcome before a fully automated system uZ[7[mK}n7  
can be realized. i WCR 5c=  
8. Most problems in practice are complicated S b0p?  
9. More problem surface here. "ecG\}R=  
10. Hamper effort toward a xx system bbGSh|u+P  
11. In order to overcome the limitations due to incomplete and  :{#%_^}k  
imprecise xx knowledge, a xx program has been developed, which Xx.4K>j+j  
bases its knowledge upon the statistical analysis of a sample ;ZnSWIF2  
population of xx RM^3Snd=V  
12. The above difficulties are real challenges faced by researchers vTrjhTa\  
attempting to develop OnD!*jy  
13. This type of mapping raises no controversy to the issue of h8R3N?S3#  
membership function determination. q. i2BoOd  
14. However, attempts to quantify the xx have met both theoretical PKDzIA~T  
and empirical problems. U)v['5%  
j$2rU'  
15. It has become apparent that in order to apply this new `2}Frw+?  
methodological framework to real-world problems and data, we have kNC.^8ryz[  
to pay attention to the problems of xx and xx. , `4chD  
Chapter 3. Proposed methodology +>zjTP7\e"  
Assumption |I; tBqN{u  
1. In the case when the assumption of a xx seems to be too j41)X'MgJ  
restrictive or inadequate, the formulation with Fuzzy termination CV9o,rL  
time, i.e. given by a fuzzy set in the space of control stages, may be  18(hrj  
applied. [w0@7p"7  
2. We assume here the fuzzy constraints to be state-dependent, and 8 $!&D&v  
the fuzzy goal to be the same for all the control states, xx, which QNH-b9u>8  
stems from the problem's nature. y. xt7 F1  
3. An approach to the solution of this problem is presented under the :K:oH}4oh  
assumption that the sampling rate Decision can be made prior to the x,U '!F  
execution of the experiment, as opposed to being made while the 4trP*u,4  
experiment is in progress. \a_75^2  
4. Another assumption made above is that there are precise odds at <7U\@si4  
which the expert is indifferent. b" Z$?5  
5. Main simplifying assumptions are: :i{Svb*_'  
6. This, in our view, is a questionable assumption. oFO)28 Btv  
Outline / Structure / Module OouIV3  
1. An outline of the research  "aU) [  
2. Information is incorporated within the scheme )bd)noZi  
3. Is built into ... structure \ F\ /<  
4. A nice modular structure. \?$`dA[  
5. The principles of ... are applied as modularized criteria O/(QLgUr  
Classification Li'>pQ+  
1. A xx system comprises three main components: %>z4hH,  
2. Must decompose the original .. into a set of .. [NxC7p:Lo  
3. Consists of the following steps: Oc6_x46S4  
4. This is summarized in the following steps: f3>L/9[[<P  
9}[UZN6  
5. Can be broadly classified into the following areas: z[cs/x  
6. Can be characterized by its function of effectively processing the >U~{WM$"Y  
7. Can allow further breadth of application of ...into more gNWTzz<[f>  
8. The following steps should be followed 8gHOs#\  
9. xx can be classified by a different ways. Nf]h8d~  
10. Based on the xx, one may classify xx into the following: &'V1p4'  
11. This catalog may change due to wear, breakage, and purchasing. #VvU8"u  
System  &Hi;>  
1. Unlike many conventional program, expert systems do not -MK9IO]i  
usually deal with problem for which there is clearly a right or wrong ? PI2X.6  
answer. ~pC\"LU`  
2. The system consists of both ... and ... b2tUJ2p  
3. The system has a hierarchical modular architecture organized on yrF"`/zv6|  
three levels. ^H(,^cVN  
4. expert system domains are area of expertise NQmdEsK  
5. To develop a xx system for xx, the following factors must be sQXj?5!  
considered: W]CsKN,K  
6. The system has been developed / designed to determine ng{ "W|  
7. The system has proven to be able to \-W|)H  
8. The domain in which an expert system operates is a particular _C%:AFPP>  
domain @2;/-,4O  
9. The system comprises a ... with bzWWW^kNL  
10. The system is [feature-oriented ] / based on the ... technique L)z `  
11. The system environment must be relatively stable PC<[ $~  
12. The system is utilized to generate, load, store, update and 6Bf aB:  
retrieve ... 2X,`t%o  
13. The development of a xx system has two stages: xx stage and xx M(Tlkr  
stage. Fd;%wWY.zm  
14. The most essential part of .. system is the ... U~GQ JR  
15. The successful developments in ESs have made them an SMn(c  
important tool in the development of O63:t$Yx#  
16. An automated system was developed for !zQbF&>  
17. In this case, the system can be considered to be generative. P^57a?[`  
f 0r?cZ  
18. An interactive automatic ... system _Q9I W  
19. A …. is commonly thought of as a truly integrated .. system !T"jvDYH  
20. Should be capable of being generated from a ... system xl ]1TB@  
21. xx is an important part of the integrated system. &e \UlM22  
22. The model consists of four rule bases, each of which addresses a [T(`+ #f  
separate problem in the hierarchy of scheduling decision. f;=<$Y>i  
23. The rule bases are linked to each other in a chin-like manner in WNSY@q  
the sense that the consequent of one rule base constitutes a part of s3[\&zt  
the antecedent of the next rule base. t Uk)S  
24. The rule base consists of all possible combinations of the m0p%R>:5  
linguistic terms associated with the linguistic variable of the dCA! R"HD  
antecedent of a rule. vMzBp#MT  
Computer System b ;>?m  
1. The system has been implemented using Prolog language in an dK41NLGQ  
MS-DOS environment. Prolog was chosen because it offers a well k`B S{,=  
known and flexible environment in which fuzzy reasoning may be %J8uVD.2  
easily implemented. k_`h (R  
2. The current version of the xx program when compiled with )lU9\"?o  
WATFOR77 results in an executable code of about 270K bytes. @ a i2A|  
Typical run time, when run on a XX computer (an IBM compatible NwN3T]W  
machine) operating at 4.77 Mhz with 640K RAM, ranges from 10 min 3qkPe_<I  
to 2h, depending on the size (or complexity) of the problem. U%n>(!d  
3. Time consuming procedures have been implemented in P~;1adi3  
C-language and directly linked to the Prolog environment. 7/K L<T9@  
4. The xx process, once the xx's data has been entered, requires ,AH2/^:%c  
approximately 180 seconds. On0,#i=  
5. It should be noted that the computation was done with a 20 Hhz, u6Yp ,!+  
80386..209;based microcomputer equipped with a 80387 math 3e9UDN2  
co-processor. M'VJE|+t  
6. The computer programs used for the analyses, one based on the xx B'I_i$g4w  
method and the other based on the new method, were written in C]&/k_k  
FORTRAN with a compiler that supports the math co-processor. HWFL u  
7. Lisp, Prolog give maximum flexibility but also maximizes 2({| LQqk  
[#(',~lN7  
development time. `Hqgahb{P  
l Internal representation is the way a model is represented in the [6Q1yNE  
computer. mqbCa6>_S  
l An interactive menu-driven procedure is used in this study = |E8z u%  
l Shell can be develop very fast at the cost of time fairly severe juI)Do2_  
limitations. N'CW Sf.e  
l While there is no measurable saving of time for the case involving j`#H%2W\;  
five criteria, the saving is dramatic for the case involving 10 criteria 'e_e*.z3  
-- the computation time reduces from 10 hr 40 min to about 1 min. P`avn  
l This combination is being implemented in an objected-oriented 5"ooam3  
programming environment (Smalltalk-80 system) to solve problems L)qUBp@MW  
encountered in construction xxx. +BDW1%  
Method / Approach / Study / Process Model / Equation /Algorithm / I+( b!(H  
Rule / Formula / Technique $y{.fjy3  
l A discussion is presented of a problem-solving system u@tH6k*cBz  
l To improve the efficiency of the method, the following approach jrpki<D  
may be applied. UXh%DOq   
l In order to an investigation was made to find the causes of the iRx`Nx<@  
l Although large collections of rules and equations have been hl0\$  
complied, none are generally accepted 6uTC2ka[&R  
l This approach will be explained and discussed thoroughly in the Lq2jXy5#n  
body of the report. o'Fyo4Qd  
l This can be accomplished by l%xTF@4e  
l This algorithm to compute the total cost can be described step by *U}-Y*  
step as follows: g W_E  
l The above preliminary analysis has provided important 5$Kd<ky  
information EdTL]Xk  
l Various methods have been proposed for selecting an optimum... |~#A?mK-  
l These concepts have been applied to vvs2:87zvJ  
l On the basis of the concept mentioned above, ~2 nt33"  
l This can be achieved by zg'.fUZ  
l This fact suggests that a new concept HAo=t  
l This was accomplished by taking ... lr[T+nQ  
}%AfZ 2g;h  
l The preparatory stage is very time consuming process. sSc~q+xz  
l Test are performed for validity, completeness, and compatibility 2h#.:!/SMw  
l There is little hope of achieving successful ... ~]].i~EV(  
l There has been an increasing awareness of the potential of using ,CN (;z)  
most ..so far made have not taken this approach, with the exception R]o0V*n  
of D?UURURf  
l Only a few studies can be found. x^ `IZ{!  
l It is a very tedious process to go through CU*TY1%  
l It is only when .. has been completed that .. may be effected .z=%3p8+  
l The entire interpretation process is conducted in one's head. gs7_Q  
l These approaches are sometimes very tedious. N8k=c3|  
l Several techniques can be used hW9!  
l A polynomial parametric model can be written as [the /9,'.  
following]/[follows]: K :kb&W  
l A xx model is constructed/formulated using xx. SAj#+_db  
l A xx model represents an xx by its xx. B2*7H   
l A process decision model captures the logic essential to mlLqQ<  
l From the equation above, xx is equal to the summation of xx [b&V^41W  
times the ... m@lUJY  
l The validity of a xx model can be checked using Euler's formula. {\NBNg(Vo  
l Given a model, one can mathematically determine whether ... or ... <RpTk*Yo^=  
l Equations for xx need to be derived and implemented in the U$y wO4.  
system. xf8[&?  
l A number of heuristic rules have been developed for _~{J."q  
l Optimum .. techniques can be made more reliable by ... so that w{lj'3z I  
l An algorithm based on the characteristic ... is used to determine 8DMqjt3B  
l Euler's formula states the following: 8~yP?#p  
l The completed model should agree with the formula. "EA =auN{  
l For manufacturing purposes, a detailed and precise model of the H=*0KX{  
object is necessary avM8-&h  
l Engineering design models are very well defined; therefore, 3TLym&  
l To keep the domain narrow enough to be implementable, yet wide o8H\l\(  
enough to N6p0`  
be useful. xLLTp7b(  
mF!4*k  
Point of View H3vnc\d~  
l from an implementation standpoint, B2*>7 kc_s  
l From the point of view of this application, p:$kX9mT&  
l From this point of view, Zadeh suggested an inference rule named 9z{g3m70@  
xxx (CRI for short). |'JN<?   
l Information is the meaningful interpretation and correlation of %X^qWKix}m  
some aggregation of data in order to allow one to make decisions. lq]8zm<\)]  
l From a practical point of view, the computational aspects of an {QmK4(k?|c  
FLC require a simplification of the fuzzy control algorithm. :f%kk atO  
l The use of a hammer to insert screws, although partly effective, P*>?/I`G  
tends to distort, destroy, and generally defeat the purpose of using a ?~T(Cue>  
screw [Kusiak AI Implications for CIM p.129] f x 4#R(N  
Justification T-GvPl9ZJw  
l We choose the so called xx in our experiment because it has d0|{/4IWw;  
received wide acceptance and can trjeGSt&  
l Prolog was chosen because it offers a well known and flexible p,|)qr:M  
environment in which fuzzy reasoning may be easily implemented. `#85r{c$:  
l The rationale behind this is that it can be much easier for an +t1+1 Zv  
estimator to rate a cost as high than to attempt to place a dollar .I]v D#o  
value on the estimate. -^t.eZ*|  
l This strategy has been widely used in fuzzy control applications 7QZy d-  
since it is natural and easy to implement. 'rFLG+W  
l A function definition expresses the membership function of a {iq^CHAVK  
fuzzy set in a functional form, typically a bell-shaped function, etc. ",[/pb  
Such functions are used in FLC because they lead themselves to >gq=W5vN(  
manipulation through the use of fuzzy arithmetic. &U=_:]/  
l It should be noted that in our daily life most of the information on H8B.c%_|U  
which our decisions are based is linguistic rather than numerical in oRcP4k;d=  
nature. Seen in this perspective, fuzzy control rules provide a natural r8N)]Hs ZH  
framework for the characterization of human behavior and decisions  r3OtQ  
analysis. v;g,qO!LJ  
l Many experts have found that fuzzy control rules provide a q3-cWfU  
NU{eoqaT  
convenient way to express their domain knowledge. This explains ~R=p[h)  
why most FLCs are based on the knowledge and experience which =z<sx2#*  
are expressed in the language of fuzzy "if-the" rule. W$l4@A  
Chapter 4. Examples ?;(!( <{  
Example/ Data N>P" $  
l The data used in the following example was taken from an $(OL#>9Ly  
experiment in which xx was measured between x and x using a xx V1G5Kph  
technique. )liNjY@  
l The data consists of over xx measurements. c^&:':Z%'  
l An example of xx is discussed and the control rules of xx are 7<2?NLE8*  
compared with a xx  +, rm  
l Examples of complex processes to which this technique may be 6OQ\f,h@  
applied are xx, xx, etc. >%_i#|dE>  
l The following example is constructed only for the purpose of CJ#Yu3}  
illustrating the computational procedure discussed. la]Zk  
l This example clearly demonstrates that the profile of an individual eR3MU]zF  
xx, or a very small group of xx, with no enough data to be studied ms+gq  
statistically, can be meaningfully analyzed by fuzzy possibilistic k9\n='OI  
methods. 1'k,P;s  
l There is no space here to go into detail on all these methods, but : :/vDUDc  
deserve a mention and the bibliography will point to detailed =_2(S6~  
references for those wishing this level of detail. @Hp=xC9V  
l Note that the golf ball spotting example is used throughout the 1py >[II@  
paper. | l?*' =  
Comparisons A2fuNV_  
l As well, the pros and cons of these representations from a process 'sI @e s  
planning point of view will be discussed. q }9n.  
l The method of using xx to implement xx described by Zadeh {?IUf~<  
(1973) appeared more suitable OnE~0+  
l As discussed [in the previous section]/[preciously], .8CfCRq  
|q_Hiap#a  
Relation ^"$~&\+x5  
l We can not invert F' directly because it defines a many-to-one t@`Sa<  
mapping. ` B+Pl6l)F  
l The relationships appear very complicate -9"[/  
l Lifting tasks involve complex and imprecise relationship between U }}E E~W  
the task variables and the human operator's characteristics. yf e4}0}  
l These methods are based on the relationship between ... and ... k jR-p=}  
l The fundamental concept of a fuzzy rating language is that we can L0xh?B  
establish a relationship among terms such as high, medium, and low, xEe3,tb'e  
and then modify these relationships. (R{z3[/u&  
l This article will thus mention the latter as well as the former. 0 9*?'^s4  
l The former two bear a close relation to a fuzzy Cartesian product. LBhDP5qF  
Importance Dt+u f5o(  
l The emphasis is on an implementation of a general approach to _,|N`BBqd  
rule based decision making. t3aDDu  
Consideration / Attention &vS@-K  
l Careful evaluation is necessary to ensure xo(3<1mD  
l Such a formulation does not change further considerations. ,6^V)F  
l Considerable attention has been paid to dIvvJk8  
l Attention should be paid to an important finding of this k|_LF[ *Z  
investigation. DUu~s,A  
l Caution should be exercised in this process to avoid ... A ]~%<=b  
l Primary consideration is given to ... components, though others Gv }~  
can be accommodated IgtTYxI  
l After ... has been defined by ..., a carefully analysis is carried se]QEd7]7  
out/performed to determine EN2/3~syO-  
l A number of factors such as ...need to be taken into consideration BYsQu.N  
before making the appropriate decision. [5jXYqD=vj  
l It should be noted that Ng<oz*>U  
l It is important to point out that ... E@^mlUf  
l These considerations have heightened interest in the possibility of D,;6$Pvg^  
providing ... }h`ddo  
/c -%+Xd  
l We should stress the fundamental importance of the xx q#!c6lG  
Chapter 5. Results. "+KAYsVtU  
Advantages / Disadvantage BvV!?DY4  
l One of the major advantages of this new measure of xx is that it LDv>hzo  
can be applied to the experimental study of d7Devs k  
l One advantage of using a .. is the ease of preparing it. ~l>2NY  
l The xx system is versatile 1:d,8  
l It has a very fast decision making process LuW^Ga"E  
l All the algorithms involve mostly logical operations. -axV;+"b  
l It can be easily and without additional cost implemented in a Y!L<& sl   
microprocessor-based environment. E'4 dI:  
l It can reduce the waste of designing from scratch. i5^U1K\M  
l The advantages of using a xx to represent xx are the following: /QCyA%y  
l However, xx is not without its shortcomings.  $>y   
l In most cases, the xxx shows an improvement over the existing Kf-rthO  
xxx. JPfE`NZ  
l Compared to the existing xx, the impacts of the xx are generally y1 53ax  
reduced by 5% to 9%. $y&1.caMa  
l The "best case" results shows a savings of 6% to 9%. E?Ofkc$q  
l Most of the existing works based on xx approach can only 1 |zy6  
recognize a xx . oc3}L^aD  
l Most of the above methods are computational expansive and K~JXP5`(  
limited to xx. SR\F2@u  
l Some other advantages of xx are the following: fnm:Wa|,%|  
l The problem is the limitation of this method to a limited domain of C2 ] x  
parts. 'U'#_mYG  
l It proved limited in application because it demanded precision in &k2nt  
system modeling that was impossible in practice. jB-)/8.qk  
l There are advantages to be gained in the structuring of costs and @|GKNW#  
benefits, the use of xx, P?P))UB5  
l The disadvantages of this method are also disadvantages of *PVv=SU  
conventional xx approaches. ]\t+zF>&Y  
3qc o2{nz  
l This combines the best features of both techniques E5b JIC(  
l Hopefully, this tool can be as the reference framework of for d@72z r  
developing a xx platform, and helping the administration, marketing, 0fTEb%z8  
and knowledge management activities in virtual communities. [o,S.!W8  
Results YQ+Kl[ec  
l An improvement on the result shown above can be made by based KVrK:W--p  
on the data provided q;V1fogqI)  
l Discussion of these theories is beyond the scope of this review %aszZP  
l Based on the information contained in this xf.2Ig  
l The result can be categorized into nine classes \#A=twp  
l The results are illustrated by an example `(9B(&t^,  
l The experimental results for each xx time are reported in Table 2. >5jHgs#  
l From the results obtained so far, it seem that UT9=S21  
l Because of the inaccuracy of the ..., a conclusion cannot be drawn \O7?!i  
as 2F[;Z*&  
l Although much effort has been made to., this reality is far from ,A>i)brc  
completion. \JLiA>@ @  
l The results indicate that the total benefits are higher than the nAp7 X-t  
total costs. 2ju1<t,8)  
l Their results may then serve as guidelines for lower level models, D^Z~>D6  
less fuzzy and more detailed. +(3PY  e\  
Chapter 6. Conclusion [\ JZ pF  
l From the discussion, one may conclude that ... n]B)\D+V^  
l Form the above discussion, the conclusion can be reached that /rNY;qXM  
l The conclusions drawn are also valid 8<g_JW[%  
l In conclusion to this, it becomes obvious that the problem of xx ^saJfr x  
lies not only in... >oc7=F<8lS  
l We have attempted to introduce some concepts associated with a c3lfmTT6^  
theory of _W: S>ij(  
xx based on fuzzy sets. F|V co]"S1  
l Considerable more work, hopefully, will be done in this area J<_&f_K0]  
l A fuzzy set procedure is proposed to solve xx selection problems ZUyM:$  
rr4yJ;qpeP  
interwoven with imprecise data $ZDh8 *ND  
l Employing the compositional rule of inference, the assessment of H[x9 7r  
the xx compatibility in achieving prescribed xx projectiles in any nm'm*sU\  
level of the hierarchy is made possible. Y@.> eS  
l This paper has presented a theoretical and experimental study of ,ASY &J5)7  
the xx process and xx concept. 1&YP}sg)  
l The experimental research results will hopefully serve as useful -T{~m6  
feedback information for improvements for xx work. #G#gB   
l The scope of this contribution was to introduce a xx method. W,agP G\+  
l In general, fuzzy sets theory provides an alternative foundation ]-.Q9cjc$q  
for xx analysis in a fuzzy environment. l}AB):<Z  
Future Research PfrW,R~r  
l Thus, first extension of the approach could be, dl{3fldb  
l Present some cues for a further approach from Fuzzy Sets Theory lQ+-g#`  
application to 0/KNXz  
l Some improvements to the scheduling aspect of the model may Q}2w~Cn\S  
be brought through additional levels in the hierarchy for more 71/6=aq>n  
detailed representation of the scheduling activity. w\t{'  
Tables and Figures b'-gy0  
l Figure 7-1 sketches these relationships. t%dPj8~  
l The graphical representation of these functions is shown in Figure */8\Z46z  
1. &(.ZHF  
l The xx may be depicted as in Figure 1. 9)YG)A~<  
l Figure x shows the schematic diagram of the v5$zz w  
l Figure 1 though 2 provide a ... that E>V8|Hz;  
l the architecture of this expert system for .... is illustrated in Figure (~#PzE :  
2. lMO0d_:b1  
l Figure 2 gives the outline of an ... system W4YC5ZH{l  
l Table shows the q{_buTARq  
l as shown in Table 1 and 2 uC;@Yi8  
l This concept is illustrated in Figure 2 Aio0++ r-  
l At the top of Table xx are shown two blocks of data. vMI\$E &  
7PvuKAv?k  
l Each table or matrix has constructs xx through xx as HxM-VK '  
row-headings, )t.q[O`  
xx through xx as column-headings. $ `ho+  
l A table of .. is developed and significant recommendations are g+CH F?O  
made. 5y~[2jB:  
CONJUGATION 7:;V[/   
To Indicate Addition Gce_gZH7{  
l additionally, again, also, and then, as can be easily understood, AUq?<Vg\  
besides, equally important, especially, finally, for the same reason, 3wh yIXs  
first, further, furthermore, in addition, last, likewise, moreover, next, ]zm6;/ S  
second, third, too, evidently, obviously, roughly speaking, broadly s-DtkO  
speaking ]Lh\[@#1f  
To Indicate Cause and Effect NdZ: 7  
l accordingly, as a result, consequently, for this reason, hence, in 3A9|{Vaz+6  
short, otherwise, then, therefore, thus, truly I[|I\tW  
To indicate Comparison <*\J 6:^n  
l in a like manner, likewise, similarly , alternatively {F4:  
To Indicate Concession n-X j>  
l after all, although this may be true, at the same time, even though, ,s)H%  
even so , I admit, naturally, of course ^q6~xC,/  
To Indicate Contrast g=%&p?1@E  
l and yet, at the same time, but, for all that, however, yet, in fact, in 1Li@O[%X<  
contrast, in the real life, in spite of, nevertheless, notwithstanding, A4^+p0@  
normally, on the contrary, on the other hand, still, traditionally, 4>W`XH  
rather, unfortunately, f0F$*"#G  
To Indicate Time Relationships: cQR1v-Xt  
after a short time, afterwards, as indicated earlier, as long as, as soon o6r4tpiR5  
)0Lq>6j9  
as, at last, at length, at the moment, at that time, at the same time, zaZnL7ZJX  
before, earlier, currently, immediately, in the meantime, in recent W< n`[  
years, lately, later, meanwhile, often, of late, presently, recently, Ud GoPzN  
soon, shortly, since, thereupon, temporarily, therefore, until, when, (g Z! o_  
while 1mX*0>  
To Indicate Special Features or Examples: =6sXZ"_Tw  
for example, for instance, incidentally, indeed, in fact, in other words, Y!L jy [/  
in particular, in practice, specifically, that is, to illustrate, in this 1bBK1Uw  
respect, theoretically, as mentioned before / above WdT|xf.Q&  
To Indicate Summary: )>fi={!=c  
in brief, in conclusion, in short, in summary, on the whole, to ff#-USK^R  
conclude Trrh`@R  
, in general, to summarize, to sum up, as a result, ultimately, k mj m6  
VERB PHASE nR7\ o(!  
l build a .. model a5-\=0L~  
l build up the key link MjpJAV/84  
l began a new era in ... =CoT{LRQ_  
l can be regarded as / achieved / used to/for / found / obtained z7q2+;L  
through K>[H@|k\k  
l can result in q}5A^QX  
l carries out ... tasks gnXjd}  
l production information in order to simultaneously { Fi@|'  
l contains all information necessary to describe Nj0)/)<r+  
l do not make use of production information U3}R^W~eb  
l deals with %'e(3;YI  
l end with failure IMza 2  
l fetch the information from the model directly `dP+5u!  
l has great potential / yet to be resolved / spurred the sh ;uKzQ  
development of / W[Bu&?h$  
been recognized as iIE(zw)H  
l BE aimed at / built up / carried out by / essentially concerned %7msAvbk  
2~V Im#  
with / considered to be the key technology / associated with each #ja`+w}  
feature of a compo #-T.@a1X  
site component / cable of / currently implemented for / 7X(]r1-+\  
demonstrated by an example / finally reached / made equal to / AiZFvn[n8  
equivalent to / more suitable to / oriented to / interpreted as / Net)l@IB]  
pointed out / potentially of great benefit in the complex task of / .gGvyscdH;  
shown in / used to effectively guide the search 8[)]3K x  
l makes use of s&hA  
l make up ~lqGnNhh 7  
l meets the needs of real life production,/ the current demands 7[g;|(G0  
placed upon it >&QH{!(  
l must be justified {~fCqP.2  
l point out *O> aqu  
l play an important role 1G%PXrEj8  
l relates to O[)]dD&'  
l rely on "F$o!Vk  
l satisfy the needs 45sxF?GSwL  
l determine the total requirements for the ... :z.Y$]F@  
l uses ... as a key to search for... zN+* R;Ds  
l without relying on >:E* 7  
l will be available/ performed/ overlooked K\ +}q{  
NOUN PHASE oNB,.:  
l a basic technical function of l(#ke  
l a critical need `n`"g<K)Q  
l a key / principle feature of UIOEkQ\Wl  
l a substantial impact on ggI=I<7M  
l an intensive review was conducted E0 eQ9BXh  
l an increasing need for expanding the application of .... - SS r  
l an important component / function / aspect / issue EeJqszmH  
l each rule is numbered in sequence <* "pra{3  
l each of these involves {HHh.K  
l for this calculation, it is necessary to define 7~"(+f  
l in the physical environment / integration of jD/7/G*  
M6]0Y@@>  
l in the reality of situations where … Ji6`-~ k  
l many aspects of ZSPgci  
l most past efforts have been spent on ... pSQCT  
l common sense to a well studied and documented technical field. a,~D+s;^  
l sources of additional information on ... are listed h zZ-$IX X  
l systematic and rationally structured format e" Eqi-  
l the basis on which a range of ...operations can be established is mT6q}``vtG  
shown _7lt(f[ S  
l THE basic philosophy / principles of / key element / general /z1p/RiX  
hypothesis / candidate list of / concept of ... has attracted wide i)7n c  
interest / function is concerned with / heart / impact / nature / role 2"leUur~rO  
/ task of / kernel functions RQ^m6)BTo  
l the number of parts needed to T2DF'f3A  
l the above statement means that 4YDT%_h0  
l the output data is passed to ?aFr8i:)M  
l the proposed method / underlying principle '7Mep ]  
l the recommendations made in this report, if implemented, should q]"2hLq  
l this information resides in eC6>yD6D  
l this process is composed of ... different ... operation {gFAvMj #  
l along with the use of 'y4zBLY  
l concerning general aspects of }+Rgx@XZ\  
l due to ]<27Sw&yaG  
l for later use in generating..., =U4f}W;  
l in turn, 5LQk8NPh  
l IT IS believed / noted / assumed / suggested / shown / quite FZe:co8Mu  
evident / appears / implies that / intended for / of no important to i`[#W(m  
l it can be claimed/concluded that c ]>DI&$;J  
l it demonstrates the decisions required of "jL1. 9%"  
l it also provides information to .. 1.'(nKoq  
l it becomes essential to iH-bo@  
l let ... be the probability that EXA^!/)  
l once... is written, it is compiled into... {(rf/:X!p  
l suppose it is observed that  T/[f5?p  
l this is because 9s! 2 wwh  
!|:RcH[  
l this results in a i=oTg  
l upon completion of the ... analysis, bb|}'  
l when the knowledge is of mathematics or quantum physics, it will >n]oB~P%  
also be Bk,2WtVX  
recorded in books and papers k+FMZ, D|  
l selection of rules for using the tools, for generating operation ?-e7e %  
plans, LU%#mY  
is another matter of preference, since practice varies greatly. lM>.@ :  
l for the sake of convenience (Aorx #z  
l correct decision to be reach lbRzx4=\y  
l keeping the number of rules to a minimum. C1b*v&1{  
l a good process plan will result exhibiting several characteristics: ton1oq  
l practical solutions DKX/W+#a  
l because of rather small job lot sizes ~p:?QB>1]  
l Backward reasoning can be used to answer the question "should Hb+X}7c$  
milling tool be select" different level of knowledge in the realm of G~"z_  (  
process planning
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沙发  发表于: 2007-11-14   
Very useful, thank u!
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