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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 I>b-w;cC  
Xq&x<td  
QjfQoT F  
Beginning ;K?fAspSH  
1. In this paper, we focus on the need for H[%F o  
2. This paper proceeds as follow. 1Oo^  
3. The structure of the paper is as follows. +j5u[X  
4. In this paper, we shall first briefly introduce fuzzy sets and related zx\N^R;Jq  
concepts !l'Az3'J|  
5. To begin with we will provide a brief background on the `$`:PT\Zv4  
Introduction 3OHP-oa.  
1. This will be followed by a description of the fuzzy nature of the 6wzF6] @O  
problem and a detailed presentation of how the required {xt<`_R  
membership functions are defined. R~b9 )  
2. Details on xx and xx are discussed in later sections. uVqJl{e\  
3. In the next section, after a statement of the basic problem, various ua:.97~Ym  
situations involving possibility knowledge are investigated: first, an H<`[,t  
entirely possibility model is proposed; then the cases of a fuzzy *MkhRLw\,  
service time with stochastic arrivals and non-fuzzy service rule is :5?ti  
studied; lastly, fuzzy service rule are considered. $XFG1?L!  
Review SPsq][5eR  
1. This review is followed by an introduction. 5h[u2&;G  
2. A brief summary of some of the relevant concepts in xxx and xxx is M@Q=!!tQ(  
presented in Section 2. p'k stiB  
3. In the next section, a brief review of the .... is given. ,?B.+4CW\E  
4. In the next section, a short review of ... is given with special regard "<6pp4*I  
to ... !5`}s9hsF_  
5. Section 2 reviews relevant research related to xx. #2DH_P  
6. Section 1.1 briefly surveys the motivation for a methodology of aJMh>  
action, while 1.2 looks at the difficulties posed by the complexity of (uOW5,e7  
systems and outlines the need for development of possibility ~N[hY1}X[  
methods. w0S zK-&  
Body Z;S*fS-_  
1. Section 1 defines the notion of robustness, and argues for its #2ZXYH}  
F.A<e #e?  
importance. w^|,[G ^}H  
2. Section 1 devoted to the basic aspects of the FLC decision-making (%#d._j>fZ  
logic. @+1E|4L1vf  
3. Section 2 gives the background of the problem which includes xxx <O5;w  
4. Section 2 discusses some problems with and approaches to, 6xL=JSi~  
natural language understanding. FZ=6x}QZ  
5. Section 2 explains how flexibility which often ... can be expressed #C+Gk4"w  
in terms of fuzzy time-window c;U\nC<Y  
6. Section 3 discusses the aspects of fuzzy set theory that are used in <Dm6CH  
the ... F5 LQgK-z  
7. Section 3 describes the system itself in a general way, including !a~x |pjJ  
the ….. and also discusses how to evaluate system performance. sTG+c E  
8. Section 3 describes a new measure of xx. WP]<\_r2  
9. Section 3 demonstrates the use of fuzzy possibility theory in the !-.-!hBN  
analysis of xx. M8[YW|VkP  
10. Section 3 is a fine description of fuzzy formulation of human \=N tbBL$[  
decision. klf<=V  
11. Section 3 is developed to the modeling and processing of fuzzy w|L~+   
decision rules 5?O/Aub  
12. The main idea of the FLC is described in Section 3 while Section 4 keJec`q=X  
describes the xx strategies. +W;B8^imG  
13. Section 3 and 4 show experimental studies for verifying the h.?[1hT4R  
proposed model. )D[ypuM&  
14. Section 4 discusses a previous fuzzy set-based approach to cost rM?D7a{q  
variance investigation. ;~1r{kXxA"  
15. Section 4 gives a specific example of xxx. .vW~(ZuD  
16. Section 4 is the experimental study to make a fuzzy model of 5z]dA~;*2  
memory process. Ro<!n>H  
17. Section 4 contains a discussion of the implication of the results of 19N:9;Ixz  
Section 2 and 3. &)X<yd0  
18. Section 4 applies this fuzzy measure to the analysis of xx and !8L Ql}  
illustrate its use on experimental data. &R5M&Iw L  
19. Section 5 presents the primary results of the paper: a fuzzy set @wFm])}0  
model .. W^Rb~b^?  
pbzbh&Y  
20. Section 5 contains some conclusions plus some ideas for further eXOFAd]>u  
work. <>e<Xd:77{  
21. Section 6 illustrates the model with an example. #!5Nbe  
22. Various ways of justification and the reasons for their choice are :_aY:`  
discussed very briefly in Section 2. 6)3eB{$;  
23. In Section 2 are presented the block diagram expression of a Z|/):nVP7  
whole model sN g"JQ  
of human DM system >WDpBn :  
24. In Section 2 we shall list a collection of basic assumptions which h4qR\LX  
a ... scheme must satisfy. s{,e^T  
25. In Section 2 of this paper, we present representation and  ~Afs  
uniqueness theorems for the fundamental measurement of fuzziness Kulg84<AwM  
when the domain of discourse is order-dense. ?oJ~3K g  
26. In Section 3, we describe the preliminary results of an empirical Q&#:M>!|  
study \'EWur"  
currently in progress to verify the measurement model and to wMUnZHd{|  
construct membership functions. "_K 6=  
27. In Section 5 is analyzed the inference process through the two E+)Go-rS(  
kinds of inference experiments... ;MMFF{  
This Section KCT8Q!\  
1. In this section, the characteristics and environment under which { &'TA  
MRP is designed are described. OKqpc;y:D  
2. We will provide in this section basic terminologies and notations O9_YVE/-]  
which are necessary for the understanding of subsequent results. ^pjez+  
Next Section [GP( r  
2. The next section describes the mathematics that goes into the C|I 1 m  
computer implementation of such fuzzy logic statements. asi1c y\  
3. However, it is cumbersome for this purpose and in practical nAg(lNOWN  
applications the formulae were rearranged and simplified as $"8k|^Z3  
discussed in the next section. $Y`aS^IW  
4. The three components will be described in the next two section, -!0LIr:"  
and an example of xx analysis of a computer information system will `Ek!;u>  
.vv*bx   
then illustrate their use. 6.|~~/  
5. We can interpret the results of Experiments I and II as in the ]~^/w}(K  
following sections. s=T jM?)  
6. The next section summarizes the method in a from that is useful $dP)8_Z2  
for arguments based on xx iy]}1((hR  
Summary VTWE-:r  
1. This paper concludes with a discussion of future research @__;RVQ  
consideration in section 5. 8zC k9&  
2. Section 5 summarizes the results of this investigation.  J31M:<  
3. Section 5 gives the conclusions and future directions of research. {^W,e ^:  
4. Section 7 provides a summary and a discussion of some extensions yj~"C$s  
of the paper. `z_7[$\~  
5. Finally, conclusions and future work are summarized j7 =3\SO  
6. The basic questions posed above are then discussed and M0SH-0T;Z  
conclusions are drawn. :BX{ *P  
7. Section 7 is the conclusion of the paper. i)L:VkN  
Chapter 0. Abstract X|`,AK Jit  
1. A basic problem in the design of xx is presented by the choice of a nb_^3K]r  
xx rate for the measurement of experimental variables. b 0b9#9x  
2. This paper examines a new measure of xx in xx based on fuzzy <j\;>3Q  
mathematics which overcomes the difficulties found in other xx DBBBpb~~  
measures. ^|GtO.  
3. This paper describes a system for the analysis of the xx. WcwW@cY7\  
4. The method involves the construction of xx from fuzzy relations.  - 1  
5. The procedure is useful in analyzing how groups reach a decision. Sz|CreFK16  
6. The technique used is to employ a newly developed and versatile ,/6:bc:W  
xx algorithm. *ZR@ z80i  
7. The usefulness of xx is also considered. `4.sy +2  
8. A brief methodology used in xx is discussed. ;3|Lw<D5;  
9. The analysis is useful in xx and xx problem. C9U { ^  
10. A model is developed for a xx analysis using fuzzy matrices. rm=~^eB  
11. Algorithms to combine these estimates and produce a xx are S@xsAib0J  
%?oU{KzQ@;  
presented and justified. O)xEF~DaD  
12. The use of the method is discussed and an example is given. < mK  
13. Results of an experimental applications of this xx analysis bepYeT  
procedure are given to illustrate the proposed technique. Z!-<rajl  
14. This paper analyses problems in X;6 r $   
15. This paper outlines the functions carried out by ... )~.&bEm\  
16. This paper includes an illustration of the ... 8gtCY~m  
17. This paper provides an overview and information useful for H'0*CiHes  
approaching \8*,&ak%  
18. Emphasis is placed on the construction of a criterion function by |/\U^AHm"h  
which the xx in achieving a hierarchical system of objectives are 7#9'2dI  
evaluated. ;Co[y=Z  
19. The main emphasis is placed on the problem of xx ]v@tZ}  
20. Our proposed model is verified through experimental study. @b!R2Yq  
21. The experimental results reveal interesting examples of fuzzy ^Em@6fz[  
phases of: xx, xx KBr5bcm4u  
22. The compatibility of a project in terms of cost, and xx are likewise @x=BJuUuX  
represented by linguistic variables. CS;W)F  
23. A didactic example is included to illustrate the computational eY 4`k  
procedure !HR2Rfl  
Chapter 1. Introduction XJJ[F|k~  
Time {FJX  
1. Over the course of the past 30 years, .. has emerged form intuitive ?BDlB0jxzi  
2. Technological revolutions have recently hit the industrial world V8nz-DL{  
3. The advent of ... systems for has had a significant impact on the w(V? N'[  
4. The development of ... is explored Lov.E3S6;  
5. During the past decade, the theory of fuzzy sets has developed in a z[5Y Z~}*  
variety of directions y#Mc4?  
6.The concept of xx was investigated quite intensively in recent years {(M&-~Yh  
7. There has been a turning point in ... methodology in accordance 1=/doo{^  
with the advent of ... } T/}0W]0  
8. A major concern in ... today is to continue to improve... bIb6 yVnHi  
9. A xx is a latecomer in the part representation arena. +Q SxYV  
"$~}'`(]  
10. At the time of this writing, there is still no standard way of xx FI?gT  
11. Although a lot of effort is being spent on improving these b:FEp'ZS  
weaknesses, the efficient and effective method has yet to be 9<t9a f\.>  
developed. ,30FGz^i  
12. The pioneer work can be traced to xx [1965]. DnNt@e2|  
13. To date, none of the methods developed is perfect and all are far 1N!Oslum  
from ready to be used in commercial systems. F@=e2e 4  
Objective / Goal / Purpose 3{Na ZIk  
1. The purpose of the inference engine can be outlined as follows: m4P hn~>Gg  
2. The ultimate goal of the xx system is to allow the non-experts to P9 {}&z%:  
utilize the existing knowledge in the area of manual handling of loads, LyuSZa]  
and to provide intelligent, computer-aided instruction for xxx. -TzI>Fz  
3. The paper concerns the development of a xx }mKGuCoH>  
4. The scope of this research lies in +={  
5. The main theme of the paper is the application of rule-based tJUVw=  
decision making. 3)6+1Yc  
6. These objectives are to be met with such thoroughness and DC?21[60  
confidence as to permit ... cm@jt\D  
7. The objectives of the ... operations study are as follows: c=b+g+*xd  
8. The primary purpose/consideration/objective of @T<ad7g-2J  
9. The ultimate goal of this concept is to provide D ?Nd; [  
10. The main objective of such a ... system is to ^y&q5p jj  
11. The aim of this paper is to provide methods to construct such \p5|}<Sr)  
probability distribution. ;Ay >+M2O  
12. In order to achieve these objectives, an xx must meet the ~gu=x&{  
following requirements: NFB *1_m  
13. In order to take advantage of their similarity /Jh1rck  
14. more research is still required before final goal of ... can be _R EqT  
completed ~'NX~<m  
15. In this trial, the objective is to generate... c*N50%=4  
16. for the sake of concentrating on ... research issues v2Dt3$@H6  
17. A major goal of this report is to extend the utilization of a recently Y Sqv86  
developed procedure for the xx. Kb^>X{  
Wu4ot0SZ  
18. For an illustrative purpose, four well-known OR problems are JDkCUN5  
studied in presence of fuzzy data: xx. bAdiA2VF'  
19. A major thrust of the paper is to discuss approaches and 9z #P  
strategies for structuring ..methods F 4GP7]  
20. This illustration points out the need to specify EbCIIMbe"  
21. The ultimate goal is both descriptive and prescriptive. `q%U{IR  
22. Chapter 2. Literature Review ypH8QfxLTr  
23. A wealth of information is to be found in the statistics literature, 5gSylts8  
for example, regarding xx 5QAdcEcN@O  
24. A considerable amount of research has been done .. during the XcOA)'Py  
last decade S"zk!2@C  
25. A great number of studies report on the treatment of d]8_l1O  
uncertainties associated with xx. Mal<iNN  
26. There is considerable amount of literature on planning /?Vdqci  
27. However, these studies do not provide much attention to 7!p LK&_  
uncertainty in xx. cQX:%Ix=  
28. Since then, the subject has been extensively explored and it is R\*)@[y9l  
still under investigation as well in methodological aspects as in <|a=hHPi:  
concrete applications. EJ`Q8uz  
29. Many research studies have been carried out on this topic. b4 CF`BG  
30. Problem of xx draws recently more and more attention of system b vRB  
analysis. L=RGL+f1 _  
31. Attempts to resolve this dilemma have resulted in the r?pZ72 q  
development of za T_d/?J  
32. Many complex processes unfortunately, do not yield to this +i.u< T  
design procedure and have, therefore, not yet been automated. :=9<  
33. Most of the methods developed so far are deterministic and /or r2nBWA3  
probabilistic in nature. o&z!6"S<  
34. The central issue in all these studies is to MU1E_"Z)  
35. The problem of xx has been studied by other investigators, !" E-\cc'  
however, these studies have been based upon classical statistical H@D;e  
approaches. b/u8} J  
36. Applied ... techniques to 'w.} 2(  
37. Characterized the ... system as Efx= T$%^&  
>F[GVmC  
38. Developed an algorithm to r P'AJDuq  
39. Developed a system called ... which NEV p8)w  
40. Uses an iterative algorithm to deduce 5/?P|T   
41. Emphasized the need to X?/Lz;,&  
42. Identifies six key issues surrounding high technology E!! alc{  
43. A comprehensive study of the... has been undertaken z)}!e,7  
44. Much work has been reported recently in these filed YJ,*(A18  
45. Proposed/Presented/State that/Described/Illustrated/ ` 1+%}}!$u  
Indicated/Has shown / showed/Address/Highlights =K(Jq Sw+M  
46. Point out that the problem of dJ i|D  
47. A study on ...was done / developed by [] V_"f|[1  
48. Previous work, such as [] and [], deal only with _ym"m,,7?  
49. The approach taken by [] is kRlA4h1u_$  
50. The system developed by [] consists Z\ )C_p\-  
51. A paper relevant to this research was published by [] eT[&L @l]b  
52. []'s model requires consideration of... m Ni2b*k  
53. []' model draws attention to evolution in human development 1nI^-aQ3  
54. []'s model focuses on... ER^QV(IvP8  
55. Little research has been conducted in applying ... to U~H?4Izl=  
56. The published information that is relevant to this research... ;:]\KJm}?  
57. This study further shows that EzpFOqJG  
58. Their work is based on the principle of gXy -Mpzp  
59. More history of ... can be found in xx et al. [1979]. .H~YI  
60. Studies have been completed to established _<*Hv*Zm  
61. The ...studies indicated that (Rd$VYuf  
62. Though application of xx in the filed of xx has proliferated in  tR)H~l7q  
recent years, effort in analyzing xx, especially xx, is lacking. lV6dm=k  
Problem / Issue / Question (= ;N{u  
63. Unfortunately, real-world engineering problems such as Y; ) .+si  
manufacturing planning do not fit well with this narrowly defined )T|L,Lp  
model. They tend to span broad activities and require consideration lAi2,bz"  
of multiple aspects. nxo+?:**  
64. Remedy / solve / alleviate these problems Or0O/\D)  
67. ... is a difficult problem, yet to be adequately resolved |E)aT#$f'  
S\#17.=  
68. Two major problems have yet to be addressed ytAWOt}`  
69. An unanswered question R 9 4^4I  
70. This problem in essence involves using x to obtain a solution. 'T8W!&$  
71. An additional research issue to be tackled is .... #& ?g %'  
72. Some important issues in developing a ... system are discussed fV\]L4%  
73. The three prime issues can be summarized: q_[G1&MC  
74. The situation leads to the problem of how to determine the ... j\&pej  
75. There have been many attempts to Zjh 2{ :  
76. It is expected to be serious barrier to /)3Lnn{W  
77. It offers a simple solution in a limited domain for a complex Ond'R'3\E  
problem. 23]Y<->Eu<  
1. There are several ways to get around this problem. <wd]D@l7r  
2. As difficult as it seems to be, xx is by no means new. } ^kL|qmjR  
3. The problem is to recognize xx from a design representation. rNDrp@A>  
4. A xx problem can trace its roots to xx. =/0=$\Ws  
5. xx [1987] used a heuristic approach to simplify the complexity of q(M:QWA q  
the problem. r(A.<`\   
6. Several problems are associated with them. kFLB> j97  
7. Although some progress has been made in this area, at least two zg)sd1@  
major obstacles must be overcome before a fully automated system 0%`4px4J  
can be realized. ;3eKqr0  
8. Most problems in practice are complicated <If35Z)~  
9. More problem surface here.  t+uE  
10. Hamper effort toward a xx system EbNd=Z'J  
11. In order to overcome the limitations due to incomplete and dEa<g99[?  
imprecise xx knowledge, a xx program has been developed, which i yesD  
bases its knowledge upon the statistical analysis of a sample  >w6taX  
population of xx -e GL)M  
12. The above difficulties are real challenges faced by researchers (rtY!<|p  
attempting to develop W#fZ1E6  
13. This type of mapping raises no controversy to the issue of HeGY u?&  
membership function determination. hB;VCg8  
14. However, attempts to quantify the xx have met both theoretical B5%n(,Lx  
and empirical problems. /UcV  
R7 jmv n  
15. It has become apparent that in order to apply this new C BYX]  
methodological framework to real-world problems and data, we have ?4H#G)F  
to pay attention to the problems of xx and xx. uQ$^;Pr  
Chapter 3. Proposed methodology URgk^nt2p  
Assumption 3\O |ii  
1. In the case when the assumption of a xx seems to be too :e1o<JgPt  
restrictive or inadequate, the formulation with Fuzzy termination 4LcX<B U9  
time, i.e. given by a fuzzy set in the space of control stages, may be INs!Ame2  
applied. C;+(Zp  
2. We assume here the fuzzy constraints to be state-dependent, and N{SQ( %V  
the fuzzy goal to be the same for all the control states, xx, which n"PJ,ao  
stems from the problem's nature. Di_2Plo)4  
3. An approach to the solution of this problem is presented under the w.\w1:d  
assumption that the sampling rate Decision can be made prior to the vr^~ yEr  
execution of the experiment, as opposed to being made while the Lf([dE1  
experiment is in progress. #o/ H~Iv  
4. Another assumption made above is that there are precise odds at Z v_.na/^K  
which the expert is indifferent. -4rDbDsr  
5. Main simplifying assumptions are: 1axQ)},o@p  
6. This, in our view, is a questionable assumption. $mmup|;(  
Outline / Structure / Module unJid8Lo  
1. An outline of the research jc[_I&Oc_  
2. Information is incorporated within the scheme 4h!f/aF'  
3. Is built into ... structure <e]Oa$  
4. A nice modular structure. R3)57OyV  
5. The principles of ... are applied as modularized criteria [3l*F  
Classification h)1qp Qj  
1. A xx system comprises three main components: EV#MQM  
2. Must decompose the original .. into a set of .. P1b'%  
3. Consists of the following steps: l kyzNy9R  
4. This is summarized in the following steps: )b<k#(i@#  
\ \BCcr\l  
5. Can be broadly classified into the following areas: id<:p*  
6. Can be characterized by its function of effectively processing the ri`R<l8  
7. Can allow further breadth of application of ...into more 4Wy <?O2  
8. The following steps should be followed #po5_dE\*  
9. xx can be classified by a different ways. ZKQ hbNT  
10. Based on the xx, one may classify xx into the following: l$K,#P<)  
11. This catalog may change due to wear, breakage, and purchasing. mS#zraJn5  
System E^GHVt/.  
1. Unlike many conventional program, expert systems do not [s9O0i" Y  
usually deal with problem for which there is clearly a right or wrong B63pgPX  
answer. ;!o]wHmA  
2. The system consists of both ... and ... OA:%lC!  
3. The system has a hierarchical modular architecture organized on S[tE&[$(p  
three levels. $F.([?)k?  
4. expert system domains are area of expertise HL/bS/KX  
5. To develop a xx system for xx, the following factors must be bifS 2>c  
considered: cPgfTT  
6. The system has been developed / designed to determine ^gV T$A  
7. The system has proven to be able to [Q\GxX.  
8. The domain in which an expert system operates is a particular Oz|K8p  
domain  tv XW  
9. The system comprises a ... with Xh J,"=E+  
10. The system is [feature-oriented ] / based on the ... technique f84:hXo6  
11. The system environment must be relatively stable L lBN-9p  
12. The system is utilized to generate, load, store, update and C^ Q tSha  
retrieve ... >5R <;#8  
13. The development of a xx system has two stages: xx stage and xx L< zD<M  
stage. MNH1D! }  
14. The most essential part of .. system is the ... :'a AZegQY  
15. The successful developments in ESs have made them an y=Mq(c:'UN  
important tool in the development of +0),xu  
16. An automated system was developed for a[lY S{  
17. In this case, the system can be considered to be generative. j@Yi`a(sdm  
ExHKw~y9  
18. An interactive automatic ... system JbB}y'c4}=  
19. A …. is commonly thought of as a truly integrated .. system @aQ1khEd  
20. Should be capable of being generated from a ... system g%u&Zkevx  
21. xx is an important part of the integrated system. *m%]zj0bo  
22. The model consists of four rule bases, each of which addresses a v^ d]r Sm  
separate problem in the hierarchy of scheduling decision. 65ly2gl  
23. The rule bases are linked to each other in a chin-like manner in UD~p'^.m_  
the sense that the consequent of one rule base constitutes a part of T0)"1D<l  
the antecedent of the next rule base. (Qgde6  
24. The rule base consists of all possible combinations of the PpLU  
linguistic terms associated with the linguistic variable of the Sx    
antecedent of a rule. Pmi#TW3X  
Computer System q9"=mO0J+  
1. The system has been implemented using Prolog language in an V|)>{Xdn  
MS-DOS environment. Prolog was chosen because it offers a well KRJLxNr  
known and flexible environment in which fuzzy reasoning may be *&AfR8x_z  
easily implemented. /v095H@  
2. The current version of the xx program when compiled with ]]}tdn_  
WATFOR77 results in an executable code of about 270K bytes. c`x7u}C  
Typical run time, when run on a XX computer (an IBM compatible \, !Q Jp4  
machine) operating at 4.77 Mhz with 640K RAM, ranges from 10 min OL7_'2_z.  
to 2h, depending on the size (or complexity) of the problem. yGg,$WM  
3. Time consuming procedures have been implemented in QZ `tNq :/  
C-language and directly linked to the Prolog environment. UN"(5a8.  
4. The xx process, once the xx's data has been entered, requires 'gQidf  
approximately 180 seconds. Qr# 1u  
5. It should be noted that the computation was done with a 20 Hhz, ?Z\Yu'  
80386..209;based microcomputer equipped with a 80387 math UR(-q  
co-processor. dk8wIa"K`  
6. The computer programs used for the analyses, one based on the xx \b[9ebME  
method and the other based on the new method, were written in {f9{8-W <u  
FORTRAN with a compiler that supports the math co-processor. 93[DAs  
7. Lisp, Prolog give maximum flexibility but also maximizes {F&-7u0  
.@iFa3  
development time. ,? E&V_5  
l Internal representation is the way a model is represented in the %tA57Pn>  
computer. W;?(,xx  
l An interactive menu-driven procedure is used in this study c41: !u^  
l Shell can be develop very fast at the cost of time fairly severe 4^6.~6a  
limitations. >k']T/%  
l While there is no measurable saving of time for the case involving V+?]S  
five criteria, the saving is dramatic for the case involving 10 criteria w^K^I_2ge  
-- the computation time reduces from 10 hr 40 min to about 1 min. CeT~p6=  
l This combination is being implemented in an objected-oriented fpM #XFj  
programming environment (Smalltalk-80 system) to solve problems Z?i /r5F  
encountered in construction xxx. a :SQ16_?  
Method / Approach / Study / Process Model / Equation /Algorithm / "Clz'J]{  
Rule / Formula / Technique Dj-s5pAW  
l A discussion is presented of a problem-solving system Fb2%!0i  
l To improve the efficiency of the method, the following approach 9?+9UlJ7K  
may be applied. ;??ohA"{5  
l In order to an investigation was made to find the causes of the B68H&h]D#'  
l Although large collections of rules and equations have been ~E4"}n[3A#  
complied, none are generally accepted $awi>#[  
l This approach will be explained and discussed thoroughly in the _BnTv$.P  
body of the report. F-n"^.7  
l This can be accomplished by @-.? B  
l This algorithm to compute the total cost can be described step by jyW[m,#(go  
step as follows: &!7+Yb(1  
l The above preliminary analysis has provided important i~=s^8n`l  
information 5''*UFIF1  
l Various methods have been proposed for selecting an optimum... #;9H@:N  
l These concepts have been applied to t7#lsd`_  
l On the basis of the concept mentioned above, M\/XP| 7  
l This can be achieved by x49!{}  
l This fact suggests that a new concept O]u",J5  
l This was accomplished by taking ... p(3sgY1  
:x>T}C<Y  
l The preparatory stage is very time consuming process. L0Vgo <A  
l Test are performed for validity, completeness, and compatibility _45cH{$sA  
l There is little hope of achieving successful ... dK?); *w]  
l There has been an increasing awareness of the potential of using _pDjg%A>n  
most ..so far made have not taken this approach, with the exception gzfbzt}?  
of <Q`&o@I  
l Only a few studies can be found. * UcjQ  
l It is a very tedious process to go through m Pt)pn!rA  
l It is only when .. has been completed that .. may be effected *c]KHipUIS  
l The entire interpretation process is conducted in one's head. !c8L[/L  
l These approaches are sometimes very tedious. 4_Rdp`x#J  
l Several techniques can be used P[gO85  
l A polynomial parametric model can be written as [the _\AUQ{  
following]/[follows]: #a}N"*P  
l A xx model is constructed/formulated using xx. AqYxWk3>  
l A xx model represents an xx by its xx. l:e9y$_)  
l A process decision model captures the logic essential to xEoip?O?7F  
l From the equation above, xx is equal to the summation of xx V:^H4WvL\W  
times the ... ZxSsR{  
l The validity of a xx model can be checked using Euler's formula. OhWC}s  
l Given a model, one can mathematically determine whether ... or ... Z.jCera.  
l Equations for xx need to be derived and implemented in the 7>je6*(K  
system. ?MZ:_'2p  
l A number of heuristic rules have been developed for 3"i% {  
l Optimum .. techniques can be made more reliable by ... so that pcpxe&S  
l An algorithm based on the characteristic ... is used to determine FLbZ 9pX}  
l Euler's formula states the following: ?[SVqj2-  
l The completed model should agree with the formula. 9eSRCLhgD  
l For manufacturing purposes, a detailed and precise model of the )1z4q`  
object is necessary x-~-nn\O  
l Engineering design models are very well defined; therefore, @a;sV!S{  
l To keep the domain narrow enough to be implementable, yet wide q!*MH/R  
enough to g\J)= ,ju,  
be useful. (4ZLpsbJ  
)<'yQW=6  
Point of View 24|<<Xn  
l from an implementation standpoint, a(Sv,@/  
l From the point of view of this application, /,t| !)\]  
l From this point of view, Zadeh suggested an inference rule named R#fy60  
xxx (CRI for short). n2;(1qr  
l Information is the meaningful interpretation and correlation of rG5i-'  
some aggregation of data in order to allow one to make decisions. Nh :JU?h  
l From a practical point of view, the computational aspects of an mS7E_A8  
FLC require a simplification of the fuzzy control algorithm. qa;EI ; 8  
l The use of a hammer to insert screws, although partly effective, Ps|QW  
tends to distort, destroy, and generally defeat the purpose of using a yUj;4vd  
screw [Kusiak AI Implications for CIM p.129] )+k[uokj  
Justification a[JZ 5D  
l We choose the so called xx in our experiment because it has Yoe les-  
received wide acceptance and can 0O^r.&{j>  
l Prolog was chosen because it offers a well known and flexible 5 2fO)!  
environment in which fuzzy reasoning may be easily implemented. =_pmy>_z  
l The rationale behind this is that it can be much easier for an B,:23[v  
estimator to rate a cost as high than to attempt to place a dollar B~BUW WMfp  
value on the estimate. R>` ih&,)  
l This strategy has been widely used in fuzzy control applications D~7%};D[  
since it is natural and easy to implement. ew /KZE  
l A function definition expresses the membership function of a zo 87^y5?G  
fuzzy set in a functional form, typically a bell-shaped function, etc. 6O]Xhe0d@  
Such functions are used in FLC because they lead themselves to &7lk2Q\  
manipulation through the use of fuzzy arithmetic. J;7s/YH^  
l It should be noted that in our daily life most of the information on ul}4p{ m[  
which our decisions are based is linguistic rather than numerical in W3aXW,P.V  
nature. Seen in this perspective, fuzzy control rules provide a natural $k M '  
framework for the characterization of human behavior and decisions !+%Az*ik  
analysis. \}n !yYh(  
l Many experts have found that fuzzy control rules provide a o<~-k,{5P  
}isCv b  
convenient way to express their domain knowledge. This explains ,q/tyGj  
why most FLCs are based on the knowledge and experience which Cd$dn HVh  
are expressed in the language of fuzzy "if-the" rule. <tGI]@Nwk  
Chapter 4. Examples Ixyvn#ux )  
Example/ Data N,h1$)\B#  
l The data used in the following example was taken from an nmTm(?yE  
experiment in which xx was measured between x and x using a xx #IH<HL)t%e  
technique. Ax :3}  
l The data consists of over xx measurements. ,s\x]bh  
l An example of xx is discussed and the control rules of xx are +"TI_tK, S  
compared with a xx cH+h=E=  
l Examples of complex processes to which this technique may be m+;B!4 6  
applied are xx, xx, etc. A%.J%[MVz  
l The following example is constructed only for the purpose of pj aiAe!k  
illustrating the computational procedure discussed. HTR "mQ  
l This example clearly demonstrates that the profile of an individual s ZlJ/_g  
xx, or a very small group of xx, with no enough data to be studied u^j8 XOT  
statistically, can be meaningfully analyzed by fuzzy possibilistic H ={O13  
methods. x*5 Ch~<k  
l There is no space here to go into detail on all these methods, but ]}UeuF\  
deserve a mention and the bibliography will point to detailed 0BbiQXU  
references for those wishing this level of detail.  '7S!6kd?  
l Note that the golf ball spotting example is used throughout the chvrHvByS  
paper. e; &{50VY  
Comparisons h(+m<J  
l As well, the pros and cons of these representations from a process c,3'wnui  
planning point of view will be discussed. `'A(`. CL  
l The method of using xx to implement xx described by Zadeh k;"R y8[k  
(1973) appeared more suitable ! 0>!tW  
l As discussed [in the previous section]/[preciously], Ak %no3:9  
tu?Z@W/  
Relation Lic{'w&  
l We can not invert F' directly because it defines a many-to-one ZTgAZ5_cz  
mapping. q:EzKrE  
l The relationships appear very complicate hB2s$QS  
l Lifting tasks involve complex and imprecise relationship between ,Do$`yO+  
the task variables and the human operator's characteristics. 6\)8mK  
l These methods are based on the relationship between ... and ... 0,"n-5Im  
l The fundamental concept of a fuzzy rating language is that we can c1)BGy li  
establish a relationship among terms such as high, medium, and low, B4\:2hBq  
and then modify these relationships. &dwI8@&  
l This article will thus mention the latter as well as the former. : e0R7sj  
l The former two bear a close relation to a fuzzy Cartesian product. OxmlzQ"vM  
Importance T ?<'=  
l The emphasis is on an implementation of a general approach to l?yZtZ8  
rule based decision making. NXWIE4T>*^  
Consideration / Attention Q J(e*/  
l Careful evaluation is necessary to ensure Gg3?2h"d  
l Such a formulation does not change further considerations. 9m#H24{V'  
l Considerable attention has been paid to r=P$iG'&  
l Attention should be paid to an important finding of this 0N3tsIm>  
investigation. 'wT./&Z  
l Caution should be exercised in this process to avoid ... x=)30y3*;  
l Primary consideration is given to ... components, though others "z(fBnv  
can be accommodated 0=(-8vwd  
l After ... has been defined by ..., a carefully analysis is carried Z>MJ0J76]  
out/performed to determine (8m\#[T+R  
l A number of factors such as ...need to be taken into consideration K9z_=c+  
before making the appropriate decision. Y(G*Yi?;  
l It should be noted that C Sk  
l It is important to point out that ... 1!v >I"]  
l These considerations have heightened interest in the possibility of )8 N)Z~h  
providing ... E{k%d39>  
ETH#IM8J  
l We should stress the fundamental importance of the xx +G=C~X  
Chapter 5. Results. )>#<S0>'j  
Advantages / Disadvantage V@+<,tjq  
l One of the major advantages of this new measure of xx is that it >* Qk~kv<%  
can be applied to the experimental study of yn ?U7`V  
l One advantage of using a .. is the ease of preparing it. Lw2Y P[CR  
l The xx system is versatile ~BYEeUo;%v  
l It has a very fast decision making process cdU >iB,  
l All the algorithms involve mostly logical operations. 2QuypVC ]  
l It can be easily and without additional cost implemented in a s)7`r6w  
microprocessor-based environment. 7zk m  
l It can reduce the waste of designing from scratch. $lG--s  
l The advantages of using a xx to represent xx are the following: |sZ9 /G7  
l However, xx is not without its shortcomings. ~zOU/8n ,F  
l In most cases, the xxx shows an improvement over the existing cB])A57<  
xxx. O6/=/-?N=c  
l Compared to the existing xx, the impacts of the xx are generally W!9f'Yn  
reduced by 5% to 9%. 1p5q}">z  
l The "best case" results shows a savings of 6% to 9%. Pc:'>,3!V3  
l Most of the existing works based on xx approach can only &)'kX  
recognize a xx . "@'9+$i6  
l Most of the above methods are computational expansive and V@s/]|rf,  
limited to xx. / )<7$  
l Some other advantages of xx are the following: ^J=txsx  
l The problem is the limitation of this method to a limited domain of o>k-~v7  
parts. )UU6\2^  
l It proved limited in application because it demanded precision in $,@ +Ua  
system modeling that was impossible in practice. ;0}"2aGY  
l There are advantages to be gained in the structuring of costs and Cr\/<zy1-e  
benefits, the use of xx, pDS4_u  
l The disadvantages of this method are also disadvantages of !{=%l+^.  
conventional xx approaches. o\YdL2:X  
2F)OyE  
l This combines the best features of both techniques j W]c9u  
l Hopefully, this tool can be as the reference framework of for ;@\J scNJ|  
developing a xx platform, and helping the administration, marketing, ll^O+>1dO  
and knowledge management activities in virtual communities. % [F;TZt  
Results 9jFDBy+  
l An improvement on the result shown above can be made by based TgG)btQ  
on the data provided <^$b1<@  
l Discussion of these theories is beyond the scope of this review [9Hm][|Ph  
l Based on the information contained in this \DdVMn  
l The result can be categorized into nine classes "@bk$o=  
l The results are illustrated by an example KUV{]?'  
l The experimental results for each xx time are reported in Table 2. lcLxqnv  
l From the results obtained so far, it seem that {-Oc8XI/  
l Because of the inaccuracy of the ..., a conclusion cannot be drawn c=mFYsSv  
as ,$*klod  
l Although much effort has been made to., this reality is far from TV2:5@33  
completion. 667tL(  
l The results indicate that the total benefits are higher than the x?$Y<=vT  
total costs. ?7dDQI7^(  
l Their results may then serve as guidelines for lower level models, (bXp1*0 ;  
less fuzzy and more detailed. gC:E38u  
Chapter 6. Conclusion X*;p;N  
l From the discussion, one may conclude that ... +1A<kJ  
l Form the above discussion, the conclusion can be reached that cA^7}}?e  
l The conclusions drawn are also valid : \cJ vm  
l In conclusion to this, it becomes obvious that the problem of xx 3@A k6Uh  
lies not only in... l0,O4k2'  
l We have attempted to introduce some concepts associated with a ]5L3[A4Vu  
theory of 4WnxJ]5`  
xx based on fuzzy sets. AY]nc# zz  
l Considerable more work, hopefully, will be done in this area n[7zK'%Dxg  
l A fuzzy set procedure is proposed to solve xx selection problems od|.E$B  
Q?q m~wD  
interwoven with imprecise data L*38T\  
l Employing the compositional rule of inference, the assessment of k#M W>  
the xx compatibility in achieving prescribed xx projectiles in any IVKE dwA  
level of the hierarchy is made possible. l{yPO@ut`F  
l This paper has presented a theoretical and experimental study of Rx<F^J  
the xx process and xx concept. EtG)2)  
l The experimental research results will hopefully serve as useful DKH9 O  
feedback information for improvements for xx work. "+60B0>sc  
l The scope of this contribution was to introduce a xx method. .})8gL7 V  
l In general, fuzzy sets theory provides an alternative foundation R&p53n  
for xx analysis in a fuzzy environment. `z.#O\@o  
Future Research V-|}.kOH2  
l Thus, first extension of the approach could be, ];YOP%2   
l Present some cues for a further approach from Fuzzy Sets Theory CaMG$X&O  
application to ~+hG}7(:  
l Some improvements to the scheduling aspect of the model may h:wD &Fh8  
be brought through additional levels in the hierarchy for more 5kz`_\ &  
detailed representation of the scheduling activity. <Th.}=  
Tables and Figures <o O_wS@:  
l Figure 7-1 sketches these relationships. P[~a'u  
l The graphical representation of these functions is shown in Figure {s]eXc]K}  
1. jLg4_N1SD  
l The xx may be depicted as in Figure 1. 4!wfh)Z  
l Figure x shows the schematic diagram of the inPGWG K]  
l Figure 1 though 2 provide a ... that MtljI6  
l the architecture of this expert system for .... is illustrated in Figure j~0hAKHG  
2. .'M]cN~  
l Figure 2 gives the outline of an ... system KAGq\7  
l Table shows the L`BLkDm  
l as shown in Table 1 and 2 b~-9u5.L1  
l This concept is illustrated in Figure 2 Om*Dy}  
l At the top of Table xx are shown two blocks of data. "cZ.86gG`:  
Bs*s8}6  
l Each table or matrix has constructs xx through xx as LdL< 5Q[  
row-headings, 6aL`^^  
xx through xx as column-headings. hk(^?Fp  
l A table of .. is developed and significant recommendations are 6k-]2,\#  
made. d{  Z  
CONJUGATION | =&r) ~  
To Indicate Addition 6xwC1V?:0t  
l additionally, again, also, and then, as can be easily understood, 'sC{d&c  
besides, equally important, especially, finally, for the same reason, y3vOb, 4  
first, further, furthermore, in addition, last, likewise, moreover, next, 1mf_1spB  
second, third, too, evidently, obviously, roughly speaking, broadly `KZ}smMA  
speaking .d;/6HD[y  
To Indicate Cause and Effect X@B+{IFC  
l accordingly, as a result, consequently, for this reason, hence, in j&F&wRD%r  
short, otherwise, then, therefore, thus, truly Bi]%bl>%  
To indicate Comparison w!Z3EA;`  
l in a like manner, likewise, similarly , alternatively f?)qZPM  
To Indicate Concession Z# 1Qj9  
l after all, although this may be true, at the same time, even though, I3A](`  
even so , I admit, naturally, of course {Tx+m;5F  
To Indicate Contrast ]RV6( |U4_  
l and yet, at the same time, but, for all that, however, yet, in fact, in Mv_4* xVc  
contrast, in the real life, in spite of, nevertheless, notwithstanding, uu HWN|  
normally, on the contrary, on the other hand, still, traditionally, ]itvu:pl%  
rather, unfortunately, rLp0VKPe  
To Indicate Time Relationships: - iU7'  
after a short time, afterwards, as indicated earlier, as long as, as soon ).LJY<A  
NVP~`sxiZ  
as, at last, at length, at the moment, at that time, at the same time, {jbOcx$t  
before, earlier, currently, immediately, in the meantime, in recent {2-w<t  
years, lately, later, meanwhile, often, of late, presently, recently, ee6Zm+.B  
soon, shortly, since, thereupon, temporarily, therefore, until, when, S-My6'ar  
while azN<]u@.  
To Indicate Special Features or Examples: zvE]4}VL?  
for example, for instance, incidentally, indeed, in fact, in other words, *c.*e4uzF  
in particular, in practice, specifically, that is, to illustrate, in this y/E%W/3  
respect, theoretically, as mentioned before / above s %/3X\_  
To Indicate Summary: IpHGit28  
in brief, in conclusion, in short, in summary, on the whole, to *r=6bpi  
conclude e_7a9:2e  
, in general, to summarize, to sum up, as a result, ultimately, G$WMW@fy  
VERB PHASE  zoA]7pG-  
l build a .. model h ~v8Q_6  
l build up the key link .- uH ax0  
l began a new era in ... PU[] Nw  
l can be regarded as / achieved / used to/for / found / obtained c JGU~\  
through Z sv(/>  
l can result in R FWJ ZN"  
l carries out ... tasks kect)=T(  
l production information in order to simultaneously FZO}+ P  
l contains all information necessary to describe VM88#^  
l do not make use of production information ]9F$/M#  
l deals with qJj"WU5  
l end with failure b dP @^Q  
l fetch the information from the model directly G*JasHFs  
l has great potential / yet to be resolved / spurred the BRyrdt*_e  
development of / ) 7w%\i{M  
been recognized as A63=$  
l BE aimed at / built up / carried out by / essentially concerned bW-9YXj%  
4zzJ5,S1  
with / considered to be the key technology / associated with each Z^wogIAV  
feature of a compo lf-1;6nyk"  
site component / cable of / currently implemented for / [3o^06V8j  
demonstrated by an example / finally reached / made equal to / v)1@Ew=Y%  
equivalent to / more suitable to / oriented to / interpreted as / K+|G9  
pointed out / potentially of great benefit in the complex task of / L.X"wIs^  
shown in / used to effectively guide the search \I"n~h^_  
l makes use of V(wm?Cc]  
l make up yzWVUqtXm  
l meets the needs of real life production,/ the current demands Q!.JV. (  
placed upon it 1K\z amBg  
l must be justified M 5c$  
l point out JP{Y Q:NF  
l play an important role C@b-)In  
l relates to qg1tDN`s  
l rely on \l-JU  
l satisfy the needs wjy<{I  
l determine the total requirements for the ... b= +3/-d  
l uses ... as a key to search for... YUjKOPN  
l without relying on [jnA?Ge:  
l will be available/ performed/ overlooked N||a0&&  
NOUN PHASE zoibinm}Eg  
l a basic technical function of ,76Q*p  
l a critical need aE(DNeG-H  
l a key / principle feature of ,Jrm85 oG  
l a substantial impact on # KUN ZW  
l an intensive review was conducted !,<rW<&;  
l an increasing need for expanding the application of .... q"0_Px9P  
l an important component / function / aspect / issue ]kdU]}z  
l each rule is numbered in sequence 0u}+n+\g  
l each of these involves W4#E&8g%  
l for this calculation, it is necessary to define P" aw--f(  
l in the physical environment / integration of f]NaQ!. 7  
TOsHb+Uv  
l in the reality of situations where … :0% $u>;O:  
l many aspects of 7Ga'FT.F  
l most past efforts have been spent on ... _]M :  
l common sense to a well studied and documented technical field. es1'z.UJ  
l sources of additional information on ... are listed MC_i"P6a  
l systematic and rationally structured format `;Xwv)  
l the basis on which a range of ...operations can be established is vPsf{[Kr  
shown pA H 9  
l THE basic philosophy / principles of / key element / general ogJ>`0 +J  
hypothesis / candidate list of / concept of ... has attracted wide qb PC5v  
interest / function is concerned with / heart / impact / nature / role ?mh0^G  
/ task of / kernel functions yb-/_{Y  
l the number of parts needed to oN[# C>#(  
l the above statement means that ?>iZ){0,  
l the output data is passed to 8]&lUMaqVZ  
l the proposed method / underlying principle IWnyqt(k  
l the recommendations made in this report, if implemented, should ~!ICBF~j  
l this information resides in GI/4<J\  
l this process is composed of ... different ... operation A5YS "i  
l along with the use of 8zH/a   
l concerning general aspects of k6??+b:rE  
l due to l]mn 4cn3  
l for later use in generating..., )}SiM {g  
l in turn, b* o,re)Dj  
l IT IS believed / noted / assumed / suggested / shown / quite \?NT,t=3J  
evident / appears / implies that / intended for / of no important to v QL)I  
l it can be claimed/concluded that 'q*:+|"  
l it demonstrates the decisions required of R,ddH[3  
l it also provides information to .. -O>*` O>M  
l it becomes essential to l|K`'YS!<{  
l let ... be the probability that nuX W/7M  
l once... is written, it is compiled into... *!x/ia9  
l suppose it is observed that ,__|SnA.  
l this is because o!M*cyq  
T#w *5Qf  
l this results in a g6 3?(+Fz  
l upon completion of the ... analysis, rFR2c?j8  
l when the knowledge is of mathematics or quantum physics, it will /yj-^u\R  
also be O"x/O#66  
recorded in books and papers =v]eQIp  
l selection of rules for using the tools, for generating operation =AJ I3 'x  
plans, Gg9NG`e6I  
is another matter of preference, since practice varies greatly. QZ54Osdl  
l for the sake of convenience iXDQ2&gE*  
l correct decision to be reach 5-pz/%,  
l keeping the number of rules to a minimum. 6">jf #pE  
l a good process plan will result exhibiting several characteristics: JSQ*8wDcl  
l practical solutions o$r]Z1  
l because of rather small job lot sizes E5 0$y:  
l Backward reasoning can be used to answer the question "should c=p@l<)  
milling tool be select" different level of knowledge in the realm of `N"fs Ema  
process planning
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沙发  发表于: 2007-11-14   
Very useful, thank u!
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