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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 69>N xr~k  
E8Q Y6gKF  
( @y te  
Beginning jaq`A'o5  
1. In this paper, we focus on the need for Z}*{4V`R  
2. This paper proceeds as follow. d:V6.7>,  
3. The structure of the paper is as follows. :- Al}7  
4. In this paper, we shall first briefly introduce fuzzy sets and related 1 6N+  
concepts /K2=GLl ;  
5. To begin with we will provide a brief background on the E6FT*}Q  
Introduction KL}o%wfLy  
1. This will be followed by a description of the fuzzy nature of the ]sf1+3  
problem and a detailed presentation of how the required %Qc5_of  
membership functions are defined. Qso"jYl<  
2. Details on xx and xx are discussed in later sections. &/7D4!N]  
3. In the next section, after a statement of the basic problem, various (,5 ,}  
situations involving possibility knowledge are investigated: first, an e<;^P(g`E  
entirely possibility model is proposed; then the cases of a fuzzy '8|y ^\  
service time with stochastic arrivals and non-fuzzy service rule is l5R0^!t  
studied; lastly, fuzzy service rule are considered. #kt3l59Ty  
Review J0eJRs  
1. This review is followed by an introduction. >P/Nb]C  
2. A brief summary of some of the relevant concepts in xxx and xxx is 7kZ-`V|\.  
presented in Section 2. V?*\ISB`}  
3. In the next section, a brief review of the .... is given. *Ou)P9~-L  
4. In the next section, a short review of ... is given with special regard U(jZf{`Mz  
to ... Gc' CS_L  
5. Section 2 reviews relevant research related to xx. B?G!~lQ)o  
6. Section 1.1 briefly surveys the motivation for a methodology of m <DiYxK  
action, while 1.2 looks at the difficulties posed by the complexity of 6_s_2cr  
systems and outlines the need for development of possibility  V*bX>D/  
methods. wLDWD,"K  
Body 4KkjBPV  
1. Section 1 defines the notion of robustness, and argues for its S-8wL%r  
G q" [5r"  
importance. Imi#$bF6  
2. Section 1 devoted to the basic aspects of the FLC decision-making EP|OKXRltA  
logic. "XU M$:D  
3. Section 2 gives the background of the problem which includes xxx >brf7h  
4. Section 2 discusses some problems with and approaches to, eo C@b/F4  
natural language understanding. GomTec9.  
5. Section 2 explains how flexibility which often ... can be expressed ?ep'R&NV  
in terms of fuzzy time-window  ;m;a"j5  
6. Section 3 discusses the aspects of fuzzy set theory that are used in |9;6Cp  
the ... !&3iZQGWv  
7. Section 3 describes the system itself in a general way, including epWO}@ b a  
the ….. and also discusses how to evaluate system performance. RO([R=.`/  
8. Section 3 describes a new measure of xx. FuiEy=+  
9. Section 3 demonstrates the use of fuzzy possibility theory in the scff WqEo  
analysis of xx. <HLe,  
10. Section 3 is a fine description of fuzzy formulation of human Zewx*Y|  
decision. x}`]9XQ  
11. Section 3 is developed to the modeling and processing of fuzzy [BH^SvE  
decision rules 6evW O!  
12. The main idea of the FLC is described in Section 3 while Section 4 UogkQ& B  
describes the xx strategies. ]y4(WG;:  
13. Section 3 and 4 show experimental studies for verifying the rc*iL   
proposed model. aX oD{zA  
14. Section 4 discusses a previous fuzzy set-based approach to cost hr T_0FZV  
variance investigation. )wmG&"qsP  
15. Section 4 gives a specific example of xxx. 8>E_bxC  
16. Section 4 is the experimental study to make a fuzzy model of woHB![Q,  
memory process.  t8 "*j t  
17. Section 4 contains a discussion of the implication of the results of dF d^@b  
Section 2 and 3. 2 kOFyD  
18. Section 4 applies this fuzzy measure to the analysis of xx and o]&w"3vOP0  
illustrate its use on experimental data. d6$,iw@>^  
19. Section 5 presents the primary results of the paper: a fuzzy set 3f u*{8.XZ  
model .. QF  P3S(  
;g3z?Uz)  
20. Section 5 contains some conclusions plus some ideas for further lZY0A#   
work. J3]!<v=  
21. Section 6 illustrates the model with an example. s`j QX\{  
22. Various ways of justification and the reasons for their choice are ho1Mo  
discussed very briefly in Section 2. DcNQ2Zz?%  
23. In Section 2 are presented the block diagram expression of a X5@S LkJ-`  
whole model 61Z#;2]  
of human DM system Xq3n7d.  
24. In Section 2 we shall list a collection of basic assumptions which S$CO T)7  
a ... scheme must satisfy. E+Jh4$x {  
25. In Section 2 of this paper, we present representation and ]s*Fs]1+H  
uniqueness theorems for the fundamental measurement of fuzziness j\^0BTZ  
when the domain of discourse is order-dense. `EV" /&`  
26. In Section 3, we describe the preliminary results of an empirical C~do*rnM^  
study xvZNshkpAX  
currently in progress to verify the measurement model and to +Za ew679  
construct membership functions. QHt;c  
27. In Section 5 is analyzed the inference process through the two 5yvaY "B  
kinds of inference experiments... 2?",2x09  
This Section |4UU`J9M  
1. In this section, the characteristics and environment under which "[`.I*WNo  
MRP is designed are described. 8+m[ %5lu  
2. We will provide in this section basic terminologies and notations ep"YGx  
which are necessary for the understanding of subsequent results. lpW|GFG  
Next Section 87/!u]q  
2. The next section describes the mathematics that goes into the  nI1DLVt  
computer implementation of such fuzzy logic statements. NDG3mCl  
3. However, it is cumbersome for this purpose and in practical s\c*ibxM,  
applications the formulae were rearranged and simplified as o8!gV/oy  
discussed in the next section. *. H1m{V  
4. The three components will be described in the next two section, ~[@Gj{6p0  
and an example of xx analysis of a computer information system will !i0jk,[B=  
:!omog  
then illustrate their use. 8\Y/?$on  
5. We can interpret the results of Experiments I and II as in the IAr  
following sections. T[w]w  
6. The next section summarizes the method in a from that is useful % -~W|Y  
for arguments based on xx Evz;eobW/  
Summary )I80Nq  
1. This paper concludes with a discussion of future research 5XO eYO{  
consideration in section 5. MC.,n$O}6  
2. Section 5 summarizes the results of this investigation. UcCkn7}  
3. Section 5 gives the conclusions and future directions of research. MCamc  
4. Section 7 provides a summary and a discussion of some extensions Q AJX7  
of the paper. O*3x'I*a  
5. Finally, conclusions and future work are summarized [\o+I:,}wi  
6. The basic questions posed above are then discussed and P)fv:a  
conclusions are drawn. 9`J!]WQ1[  
7. Section 7 is the conclusion of the paper. -e=p*7']  
Chapter 0. Abstract =d/\8\4  
1. A basic problem in the design of xx is presented by the choice of a Z, Kbt  
xx rate for the measurement of experimental variables. RUTlwTdv  
2. This paper examines a new measure of xx in xx based on fuzzy S7-ka{S  
mathematics which overcomes the difficulties found in other xx _(J7^rN  
measures. }?,Gn]]  
3. This paper describes a system for the analysis of the xx. !F0MLvdX7^  
4. The method involves the construction of xx from fuzzy relations. p*10u@,  
5. The procedure is useful in analyzing how groups reach a decision. ||y5XXs  
6. The technique used is to employ a newly developed and versatile & z;;Bx0s  
xx algorithm. z\Y+5<a  
7. The usefulness of xx is also considered. e";r_J3w  
8. A brief methodology used in xx is discussed. nG;wQvc  
9. The analysis is useful in xx and xx problem. 2 M c/ah  
10. A model is developed for a xx analysis using fuzzy matrices. ?PNG@OK  
11. Algorithms to combine these estimates and produce a xx are ;dl>  
\oF79   
presented and justified. PMk 3b3)Z  
12. The use of the method is discussed and an example is given. C+-GE9=  
13. Results of an experimental applications of this xx analysis -UaUFJa8K&  
procedure are given to illustrate the proposed technique. @Md%gEh;&  
14. This paper analyses problems in {aI8p}T  
15. This paper outlines the functions carried out by ... ]!J 6S.@#+  
16. This paper includes an illustration of the ... 8~?3: IZ  
17. This paper provides an overview and information useful for o.t$hv|  
approaching Zam.g>{]  
18. Emphasis is placed on the construction of a criterion function by n(.y_NEgV!  
which the xx in achieving a hierarchical system of objectives are U0'>(FP~2  
evaluated. >ir'v5  
19. The main emphasis is placed on the problem of xx hoI?,[@F  
20. Our proposed model is verified through experimental study. @-bX[}.  
21. The experimental results reveal interesting examples of fuzzy V6"<lK8"  
phases of: xx, xx /_E8'qlx  
22. The compatibility of a project in terms of cost, and xx are likewise @s J[<V  
represented by linguistic variables. vz:P 2TkM  
23. A didactic example is included to illustrate the computational zCKZv|j6  
procedure T;jp2 #  
Chapter 1. Introduction U'zW; Lt  
Time iph>"b$D  
1. Over the course of the past 30 years, .. has emerged form intuitive 9ctvy?53H  
2. Technological revolutions have recently hit the industrial world jr{C/B}  
3. The advent of ... systems for has had a significant impact on the !7!xJ&/V  
4. The development of ... is explored $8o(_8Q)  
5. During the past decade, the theory of fuzzy sets has developed in a y0>asl  
variety of directions Ar4E $\W  
6.The concept of xx was investigated quite intensively in recent years ')t :!#  
7. There has been a turning point in ... methodology in accordance K^`3Bg  
with the advent of ... YLVV9(  
8. A major concern in ... today is to continue to improve... /kE3V`es  
9. A xx is a latecomer in the part representation arena. 9K~2! <  
b'Qia'a%  
10. At the time of this writing, there is still no standard way of xx ,<F=\G_f  
11. Although a lot of effort is being spent on improving these w*<XPBi  
weaknesses, the efficient and effective method has yet to be ,~8:^*0 s  
developed. ?|'+5$  
12. The pioneer work can be traced to xx [1965]. S-{[3$  
13. To date, none of the methods developed is perfect and all are far \"B?'Ep;  
from ready to be used in commercial systems. w~a^r]lPW  
Objective / Goal / Purpose [2#5;')  
1. The purpose of the inference engine can be outlined as follows: XJy~uks,  
2. The ultimate goal of the xx system is to allow the non-experts to tAFKq>\  
utilize the existing knowledge in the area of manual handling of loads, n 4Nb,)M  
and to provide intelligent, computer-aided instruction for xxx. sS;6QkI"y  
3. The paper concerns the development of a xx ]| 6 2l+  
4. The scope of this research lies in t-Rfy`I3  
5. The main theme of the paper is the application of rule-based OJiW@Z_\  
decision making. > nV~5f+  
6. These objectives are to be met with such thoroughness and "*W:  
confidence as to permit ... .?R~!K{`  
7. The objectives of the ... operations study are as follows: n2&*5m&$  
8. The primary purpose/consideration/objective of HE58A.Q&  
9. The ultimate goal of this concept is to provide xY9 #ouF  
10. The main objective of such a ... system is to q/U(j &8W{  
11. The aim of this paper is to provide methods to construct such eygmhaE  
probability distribution. _+PiaJ&'  
12. In order to achieve these objectives, an xx must meet the #\s*>Z  
following requirements: li'h&!|]  
13. In order to take advantage of their similarity NRu _6~^^  
14. more research is still required before final goal of ... can be |/<,71Ae  
completed zQ3m@x  
15. In this trial, the objective is to generate... O b'B?  
16. for the sake of concentrating on ... research issues :5Vk+s]8  
17. A major goal of this report is to extend the utilization of a recently /(I V+  
developed procedure for the xx. `roos<F1D  
X`i'U7%I  
18. For an illustrative purpose, four well-known OR problems are "fK`F/  
studied in presence of fuzzy data: xx. sd4eJ  
19. A major thrust of the paper is to discuss approaches and _8t5rF  
strategies for structuring ..methods 1o"/5T:S[  
20. This illustration points out the need to specify 7P1G^)  
21. The ultimate goal is both descriptive and prescriptive. ^b|Z<oF  
22. Chapter 2. Literature Review pde,@0(Fa  
23. A wealth of information is to be found in the statistics literature, >[t0a"  
for example, regarding xx hojP3 [  
24. A considerable amount of research has been done .. during the ^(z 7?T  
last decade _vOV(#q2a  
25. A great number of studies report on the treatment of W\]bh'(  
uncertainties associated with xx. :"m~tU3&  
26. There is considerable amount of literature on planning 48%-lkol)  
27. However, these studies do not provide much attention to i%BrnjX  
uncertainty in xx. + *u'vt?  
28. Since then, the subject has been extensively explored and it is 3On IAk3  
still under investigation as well in methodological aspects as in ;+v5li  
concrete applications. bVfFhfh*  
29. Many research studies have been carried out on this topic. n(X{|?  
30. Problem of xx draws recently more and more attention of system j,<3[  
analysis. /|7@rH([{  
31. Attempts to resolve this dilemma have resulted in the }YV,uJH[  
development of 9Z?P/ o  
32. Many complex processes unfortunately, do not yield to this mCM7FFl I  
design procedure and have, therefore, not yet been automated. x"g-okLN  
33. Most of the methods developed so far are deterministic and /or sk'< K5~  
probabilistic in nature. V+\L@mz;  
34. The central issue in all these studies is to X;2I' Kg  
35. The problem of xx has been studied by other investigators, 6yDj1PI  
however, these studies have been based upon classical statistical $'Pn(eZHGv  
approaches. kg,t[Jl  
36. Applied ... techniques to N5W;Zx]  
37. Characterized the ... system as }E o\=>l7  
QuF76&)7  
38. Developed an algorithm to ^3>Qf  
39. Developed a system called ... which Y!3Mm*  
40. Uses an iterative algorithm to deduce ^pI&f{q  
41. Emphasized the need to cZ8lRVaWW  
42. Identifies six key issues surrounding high technology hMcSB8?  
43. A comprehensive study of the... has been undertaken 1yFVF  
44. Much work has been reported recently in these filed yQP!Vt^  
45. Proposed/Presented/State that/Described/Illustrated/ Z)JJ-V!  
Indicated/Has shown / showed/Address/Highlights 6CQ.>M:R  
46. Point out that the problem of 2 X ];zY  
47. A study on ...was done / developed by [] #9R[%R7Nz  
48. Previous work, such as [] and [], deal only with d3nx"=Cy0I  
49. The approach taken by [] is n jfh4}g:  
50. The system developed by [] consists B/:+(|  
51. A paper relevant to this research was published by [] Yg @&@S]  
52. []'s model requires consideration of... {"^LUw8fd  
53. []' model draws attention to evolution in human development $q"/q*ys  
54. []'s model focuses on... ~RdD6V  
55. Little research has been conducted in applying ... to KC"#   
56. The published information that is relevant to this research... tEU}?k+:j)  
57. This study further shows that 5g x9W\a ?  
58. Their work is based on the principle of $0-}|u]5U  
59. More history of ... can be found in xx et al. [1979]. y_s^dQe  
60. Studies have been completed to established S]Y3nI  
61. The ...studies indicated that {S9't;%]  
62. Though application of xx in the filed of xx has proliferated in `.MY" g9  
recent years, effort in analyzing xx, especially xx, is lacking. (31ia"i%  
Problem / Issue / Question "w PA;4VQ  
63. Unfortunately, real-world engineering problems such as :,<G6"i  
manufacturing planning do not fit well with this narrowly defined "7> o"FQ  
model. They tend to span broad activities and require consideration )2nx5 "  
of multiple aspects. sp&s 5aw  
64. Remedy / solve / alleviate these problems `:aml+  
67. ... is a difficult problem, yet to be adequately resolved ;^[VqFpeS  
8\AyKw  
68. Two major problems have yet to be addressed YK=o[nPmK  
69. An unanswered question -a[[1  
70. This problem in essence involves using x to obtain a solution. k;7R3O@  
71. An additional research issue to be tackled is .... K)D5%?D  
72. Some important issues in developing a ... system are discussed 6~oo.6bA  
73. The three prime issues can be summarized: 6\+ ZTw  
74. The situation leads to the problem of how to determine the ... HsF8$C$z  
75. There have been many attempts to ~.:9~(2;  
76. It is expected to be serious barrier to `rwzCwA1  
77. It offers a simple solution in a limited domain for a complex 4s:S_Dw  
problem. x)]_]_vX  
1. There are several ways to get around this problem. @nh* H{  
2. As difficult as it seems to be, xx is by no means new. <n+]\a97*  
3. The problem is to recognize xx from a design representation. >~%EB?8  
4. A xx problem can trace its roots to xx. v^;p]_c~2  
5. xx [1987] used a heuristic approach to simplify the complexity of 'j#J1 xwJ  
the problem. [|vE*&:uO  
6. Several problems are associated with them. ~Z{IdE  
7. Although some progress has been made in this area, at least two SU` RHAo  
major obstacles must be overcome before a fully automated system u @@0YUa  
can be realized. mDCz=pk)  
8. Most problems in practice are complicated *EB`~s  
9. More problem surface here. 5n1aRA1  
10. Hamper effort toward a xx system 0afDqvrC6  
11. In order to overcome the limitations due to incomplete and pBbfU2p  
imprecise xx knowledge, a xx program has been developed, which 2w7PwNb*32  
bases its knowledge upon the statistical analysis of a sample 46(=*iT&V  
population of xx <mk'n6B  
12. The above difficulties are real challenges faced by researchers 9>OPaL n  
attempting to develop #+Pk_?  
13. This type of mapping raises no controversy to the issue of S>6f0\F/Y%  
membership function determination. `w;8xD(  
14. However, attempts to quantify the xx have met both theoretical K<g<xW*X  
and empirical problems. %x]8^vze  
$ Ith8p~  
15. It has become apparent that in order to apply this new -aV!ZODt  
methodological framework to real-world problems and data, we have P{gGvC,  
to pay attention to the problems of xx and xx. T`7HQf ;  
Chapter 3. Proposed methodology ; Pd nE~  
Assumption KT9!R  
1. In the case when the assumption of a xx seems to be too x Ilo@W6  
restrictive or inadequate, the formulation with Fuzzy termination WxrG o o^  
time, i.e. given by a fuzzy set in the space of control stages, may be kgl7l?|O  
applied. A#@9|3  
2. We assume here the fuzzy constraints to be state-dependent, and :,f~cdq=  
the fuzzy goal to be the same for all the control states, xx, which xis],.N  
stems from the problem's nature. }iE!( l  
3. An approach to the solution of this problem is presented under the ';>A=m9(4%  
assumption that the sampling rate Decision can be made prior to the knS(\51A  
execution of the experiment, as opposed to being made while the |l#<vw wE  
experiment is in progress. ih[!v"bv  
4. Another assumption made above is that there are precise odds at S!r,p};  
which the expert is indifferent. {p R4+g  
5. Main simplifying assumptions are: ;J&p17~T9  
6. This, in our view, is a questionable assumption. v|K'M,E  
Outline / Structure / Module Ks>l=5~v|  
1. An outline of the research iKVJ c=C  
2. Information is incorporated within the scheme WW&ag r  
3. Is built into ... structure ^fq^s T.$  
4. A nice modular structure. [/+}E X  
5. The principles of ... are applied as modularized criteria ;NJx9)7<  
Classification dR|*VT\  
1. A xx system comprises three main components: &&s3>D^Ta  
2. Must decompose the original .. into a set of .. Ix59(g  
3. Consists of the following steps: t8:QK9|1  
4. This is summarized in the following steps: 921m'WE  
)&F]j  
5. Can be broadly classified into the following areas: v\}s(X(J  
6. Can be characterized by its function of effectively processing the j-%@A`j;  
7. Can allow further breadth of application of ...into more S@^o=B]]  
8. The following steps should be followed vvwQ/iJO4Q  
9. xx can be classified by a different ways. 5z=.Z\M`8  
10. Based on the xx, one may classify xx into the following: ] i:WP2  
11. This catalog may change due to wear, breakage, and purchasing. ON-zhT?v  
System :oeDksld  
1. Unlike many conventional program, expert systems do not +aoenUm5  
usually deal with problem for which there is clearly a right or wrong vP @\"  
answer. *Ud=x^JxO  
2. The system consists of both ... and ... (Z |Nz*<  
3. The system has a hierarchical modular architecture organized on sogdM{tz\  
three levels. 7]F@ g}8  
4. expert system domains are area of expertise J-U5_>S  
5. To develop a xx system for xx, the following factors must be Bbj%RF2,  
considered: De^Uc  
6. The system has been developed / designed to determine D3(rD]c0{  
7. The system has proven to be able to <_>xkQbn2  
8. The domain in which an expert system operates is a particular {^*K@c  
domain u5O`|I@R  
9. The system comprises a ... with EN-;@P9;C  
10. The system is [feature-oriented ] / based on the ... technique H[o >"@4  
11. The system environment must be relatively stable z~($ "  
12. The system is utilized to generate, load, store, update and ~m6b6Aj@6  
retrieve ... \u$[$R5  
13. The development of a xx system has two stages: xx stage and xx DcRvZH  
stage. 4r tNvf5`  
14. The most essential part of .. system is the ... C-tkYP  
15. The successful developments in ESs have made them an (TTS-(  
important tool in the development of 8Xx4W^*_  
16. An automated system was developed for mhW*rH*m  
17. In this case, the system can be considered to be generative. 4'# ?"I  
QruclNW{Bv  
18. An interactive automatic ... system >!3r7LgK  
19. A …. is commonly thought of as a truly integrated .. system l> *L Am5  
20. Should be capable of being generated from a ... system C0gO^A.d  
21. xx is an important part of the integrated system. *nx$r[Mqj  
22. The model consists of four rule bases, each of which addresses a .r~M7 I  
separate problem in the hierarchy of scheduling decision. ngOGo =  
23. The rule bases are linked to each other in a chin-like manner in MG:eI?G/'  
the sense that the consequent of one rule base constitutes a part of jT*?Z:U  
the antecedent of the next rule base. *X\J[$!  
24. The rule base consists of all possible combinations of the :kKdda<g#  
linguistic terms associated with the linguistic variable of the a\B'Qe+  
antecedent of a rule. ZtGtJV"H  
Computer System ^i!I0Q2yd  
1. The system has been implemented using Prolog language in an \rM5@ Vf  
MS-DOS environment. Prolog was chosen because it offers a well c&'5r OY~  
known and flexible environment in which fuzzy reasoning may be agd^ga3  
easily implemented. !W/"Z!k  
2. The current version of the xx program when compiled with 9>r@wK'Pn  
WATFOR77 results in an executable code of about 270K bytes. |+Cd2[hN  
Typical run time, when run on a XX computer (an IBM compatible opgNt o6$  
machine) operating at 4.77 Mhz with 640K RAM, ranges from 10 min 8EY]<#PN  
to 2h, depending on the size (or complexity) of the problem. TjS &V  
3. Time consuming procedures have been implemented in ~EM(*k._  
C-language and directly linked to the Prolog environment. tE<'*o'  
4. The xx process, once the xx's data has been entered, requires {ObUJ3  
approximately 180 seconds. C."\ a_p  
5. It should be noted that the computation was done with a 20 Hhz, ldt]=Sqy  
80386..209;based microcomputer equipped with a 80387 math R(f6uO!m  
co-processor. .l$U:d  
6. The computer programs used for the analyses, one based on the xx r3 dGX iu  
method and the other based on the new method, were written in 0i(c XB  
FORTRAN with a compiler that supports the math co-processor. 4{ [d '-H5  
7. Lisp, Prolog give maximum flexibility but also maximizes _&N}.y)+t  
`L%<3/hF  
development time. JHa\"h  
l Internal representation is the way a model is represented in the 6w~Cyu4Ov  
computer. kS4YxtvB  
l An interactive menu-driven procedure is used in this study C!U$<_I\2  
l Shell can be develop very fast at the cost of time fairly severe ! ~tf0aY  
limitations. XTRF IY  
l While there is no measurable saving of time for the case involving C {~O!^2G  
five criteria, the saving is dramatic for the case involving 10 criteria S$ k=70H  
-- the computation time reduces from 10 hr 40 min to about 1 min. s8dP=_ `  
l This combination is being implemented in an objected-oriented :eIQF7-  
programming environment (Smalltalk-80 system) to solve problems P!I Lji!  
encountered in construction xxx. xnHB <xrE}  
Method / Approach / Study / Process Model / Equation /Algorithm / D!z'Y,.  
Rule / Formula / Technique CSY-{  
l A discussion is presented of a problem-solving system 7^syu;DT9Y  
l To improve the efficiency of the method, the following approach |g'ceG-  
may be applied. FKUo^F?z  
l In order to an investigation was made to find the causes of the @`ii3&W4  
l Although large collections of rules and equations have been ^SK!? M  
complied, none are generally accepted I%NeC d  
l This approach will be explained and discussed thoroughly in the ]Ljb&*IEj  
body of the report. FY`t7_Y?GV  
l This can be accomplished by R{ udV  
l This algorithm to compute the total cost can be described step by }I1j#d0.  
step as follows: hM[3l1o{|  
l The above preliminary analysis has provided important = 5[%%Lf  
information L4Kg%icz l  
l Various methods have been proposed for selecting an optimum... aKE`nA0\B  
l These concepts have been applied to 5nTcd@lX  
l On the basis of the concept mentioned above, I;n < ) >  
l This can be achieved by  e<(6x[_  
l This fact suggests that a new concept 0+u >"7T  
l This was accomplished by taking ... 9hssI ZO  
?1zGs2Qs  
l The preparatory stage is very time consuming process. Xvoz4'Gme  
l Test are performed for validity, completeness, and compatibility S^ D7}  
l There is little hope of achieving successful ... o 0T1pGs'  
l There has been an increasing awareness of the potential of using 3rd8mh&l  
most ..so far made have not taken this approach, with the exception qHtIjtt[q  
of q"oNFHYPDs  
l Only a few studies can be found. 8vtembna4  
l It is a very tedious process to go through \Rb:t}  
l It is only when .. has been completed that .. may be effected QPh3(K1w^  
l The entire interpretation process is conducted in one's head. W-gu*iZ6&  
l These approaches are sometimes very tedious. t\ a|Gp W  
l Several techniques can be used 7=5eLc^  
l A polynomial parametric model can be written as [the z@w}+fYO  
following]/[follows]: Jgg<u#  
l A xx model is constructed/formulated using xx. t`{T:Tjc  
l A xx model represents an xx by its xx. F_m' 9KX4E  
l A process decision model captures the logic essential to bM5o-U#^ C  
l From the equation above, xx is equal to the summation of xx bar=^V)  
times the ... A_WaRYG  
l The validity of a xx model can be checked using Euler's formula. M_-L#FHX  
l Given a model, one can mathematically determine whether ... or ... :>r W`= e'  
l Equations for xx need to be derived and implemented in the zx,9x*g  
system. Hb::;[b m:  
l A number of heuristic rules have been developed for Xx%<rsA>F  
l Optimum .. techniques can be made more reliable by ... so that jWV}U a  
l An algorithm based on the characteristic ... is used to determine \v5;t9uBZ  
l Euler's formula states the following: s@5~Hy eI  
l The completed model should agree with the formula. NdSuOkwwt  
l For manufacturing purposes, a detailed and precise model of the x#N_h0[i  
object is necessary J=gFiBw  
l Engineering design models are very well defined; therefore, @SpP"/)JY  
l To keep the domain narrow enough to be implementable, yet wide AO]cnh C  
enough to )wCNLi>4  
be useful. )7.DF|A  
EG|dN(qh  
Point of View a!-J=\>9  
l from an implementation standpoint, N$IA~)  
l From the point of view of this application, H,5]w\R6\  
l From this point of view, Zadeh suggested an inference rule named ' h< (  
xxx (CRI for short). X?wZ7*'1  
l Information is the meaningful interpretation and correlation of : ?BK A0E  
some aggregation of data in order to allow one to make decisions. Ez0zk9  
l From a practical point of view, the computational aspects of an _p+E(i 9  
FLC require a simplification of the fuzzy control algorithm. jVQ89vf ~  
l The use of a hammer to insert screws, although partly effective, G$MEVfd"  
tends to distort, destroy, and generally defeat the purpose of using a } aR}ZzK/v  
screw [Kusiak AI Implications for CIM p.129] L 1!V'Hm{  
Justification 3^~J;U!3  
l We choose the so called xx in our experiment because it has c>{QTI:]  
received wide acceptance and can 2M'dT Xz  
l Prolog was chosen because it offers a well known and flexible /\h*v!:  
environment in which fuzzy reasoning may be easily implemented. D_0Vu/v  
l The rationale behind this is that it can be much easier for an ~"#HHaBO#  
estimator to rate a cost as high than to attempt to place a dollar kVs YB  
value on the estimate. J;8 d-R5  
l This strategy has been widely used in fuzzy control applications 7 g(Z @  
since it is natural and easy to implement. qx[c0X!  
l A function definition expresses the membership function of a )3:0TFS}}k  
fuzzy set in a functional form, typically a bell-shaped function, etc. @;P ;iI  
Such functions are used in FLC because they lead themselves to T!KwRxJ23  
manipulation through the use of fuzzy arithmetic. L}Y.xi  
l It should be noted that in our daily life most of the information on z_fjmqa?  
which our decisions are based is linguistic rather than numerical in {D Q%fneN4  
nature. Seen in this perspective, fuzzy control rules provide a natural o?hr>b  
framework for the characterization of human behavior and decisions iP"sw0V8  
analysis. XgHJ Oqt  
l Many experts have found that fuzzy control rules provide a 3yKmuu!  
ikV;]ox  
convenient way to express their domain knowledge. This explains }\?9Prsd  
why most FLCs are based on the knowledge and experience which 4F6aPo2  
are expressed in the language of fuzzy "if-the" rule. KRC"3Qt  
Chapter 4. Examples c Pf_B=  
Example/ Data OpEH4X.Z  
l The data used in the following example was taken from an V>`ANZ4  
experiment in which xx was measured between x and x using a xx fyb;*hgu  
technique. UE.kR+1  
l The data consists of over xx measurements. ~E7IU<B  
l An example of xx is discussed and the control rules of xx are XAU%B-l:  
compared with a xx bT^dtEr[  
l Examples of complex processes to which this technique may be wc4BSJa,19  
applied are xx, xx, etc. ujX; wGje  
l The following example is constructed only for the purpose of Ptv'.<-  
illustrating the computational procedure discussed. <Kv$3y  
l This example clearly demonstrates that the profile of an individual Sz go@x$^  
xx, or a very small group of xx, with no enough data to be studied _xp8*2~-  
statistically, can be meaningfully analyzed by fuzzy possibilistic (O5Yd 6u  
methods. ZP<<cyY  
l There is no space here to go into detail on all these methods, but J{1H$[W~}  
deserve a mention and the bibliography will point to detailed 7#0buXBg  
references for those wishing this level of detail. o3fc-  
l Note that the golf ball spotting example is used throughout the $s/E } X  
paper. &3[oM)-V  
Comparisons 3S:Lce'f  
l As well, the pros and cons of these representations from a process qq| 5[I.?  
planning point of view will be discussed. No'?8+i  
l The method of using xx to implement xx described by Zadeh {_O!mI*  
(1973) appeared more suitable go uU  
l As discussed [in the previous section]/[preciously], ?FQ#I~'<  
Fz%;_%j  
Relation b|d-vnYE  
l We can not invert F' directly because it defines a many-to-one MEiP&=gX!  
mapping.  p+h$]CH  
l The relationships appear very complicate a[-!X7,IU  
l Lifting tasks involve complex and imprecise relationship between Gmz^vpQ]t  
the task variables and the human operator's characteristics. #X}HF$t{=  
l These methods are based on the relationship between ... and ... AI-*5[w#A  
l The fundamental concept of a fuzzy rating language is that we can k {*QU(  
establish a relationship among terms such as high, medium, and low, %=^/^[D  
and then modify these relationships. ^,>w`8  
l This article will thus mention the latter as well as the former. $.SBW=^V  
l The former two bear a close relation to a fuzzy Cartesian product. #).$o~1ht!  
Importance Ax;[Em?I  
l The emphasis is on an implementation of a general approach to g^'h 4qOa  
rule based decision making. #Iw(+%D  
Consideration / Attention jx: IK  
l Careful evaluation is necessary to ensure ;w7mr1  
l Such a formulation does not change further considerations. l|P"^;*zq  
l Considerable attention has been paid to N~ v 6K}`}  
l Attention should be paid to an important finding of this :GXF=Df  
investigation. u"[f\l  
l Caution should be exercised in this process to avoid ... #De>EQ%  
l Primary consideration is given to ... components, though others Nd~B$venh  
can be accommodated Bm$|XS3cD  
l After ... has been defined by ..., a carefully analysis is carried :<QknU}dwy  
out/performed to determine 2c `m=  
l A number of factors such as ...need to be taken into consideration b6D;98p  
before making the appropriate decision. De?VZ2o9"  
l It should be noted that ,>;21\D  
l It is important to point out that ... k9Pvh,_wp  
l These considerations have heightened interest in the possibility of "tJ+v*E  
providing ... 8Zr;n`~  
iQ'*QbP'Z  
l We should stress the fundamental importance of the xx <!OBpAq  
Chapter 5. Results. xye-Z\-t  
Advantages / Disadvantage %~u]|q<{  
l One of the major advantages of this new measure of xx is that it K d&/9<{>  
can be applied to the experimental study of kwI``7g8*e  
l One advantage of using a .. is the ease of preparing it. lSxb:$g  
l The xx system is versatile EL 5+pt  
l It has a very fast decision making process 02;jeZ#z  
l All the algorithms involve mostly logical operations. eV9U+]C`  
l It can be easily and without additional cost implemented in a 3:J>-MO  
microprocessor-based environment. %w;qu1j  
l It can reduce the waste of designing from scratch. @@65t'3S  
l The advantages of using a xx to represent xx are the following: ){^J8]b7#  
l However, xx is not without its shortcomings. HW@wia  
l In most cases, the xxx shows an improvement over the existing vObZ|>.J~O  
xxx. `m,4#P-kj  
l Compared to the existing xx, the impacts of the xx are generally !~ox;I }S  
reduced by 5% to 9%. 6(n0{A  
l The "best case" results shows a savings of 6% to 9%. iT]t`7R  
l Most of the existing works based on xx approach can only }vndt*F   
recognize a xx . YT\`R  
l Most of the above methods are computational expansive and G|6qL  
limited to xx. 7J'%;sH  
l Some other advantages of xx are the following: Ak'= l;  
l The problem is the limitation of this method to a limited domain of '&IGdB I  
parts. o Pe|Gfv\G  
l It proved limited in application because it demanded precision in K-RmB4WI  
system modeling that was impossible in practice. .#[ 9q-  
l There are advantages to be gained in the structuring of costs and 0TU3 _;o  
benefits, the use of xx, at uqo3  
l The disadvantages of this method are also disadvantages of Xw H>F7HPe  
conventional xx approaches. j G8;p41  
GVY7`k"km  
l This combines the best features of both techniques \"l z,bT  
l Hopefully, this tool can be as the reference framework of for P9v(5Z00|d  
developing a xx platform, and helping the administration, marketing, e~)[I!n  
and knowledge management activities in virtual communities. (x=$b(I   
Results @G5T8qwN  
l An improvement on the result shown above can be made by based wQxI({k@  
on the data provided >|f"EK}m!  
l Discussion of these theories is beyond the scope of this review >pq~ &)^u  
l Based on the information contained in this rN0<y4)!  
l The result can be categorized into nine classes QiK>]xJ'  
l The results are illustrated by an example zdN[Uc+1Bd  
l The experimental results for each xx time are reported in Table 2. -Vn#Ab_C  
l From the results obtained so far, it seem that J%"BCbxW~B  
l Because of the inaccuracy of the ..., a conclusion cannot be drawn $1f2'_ `8~  
as GJ9 >i)+h;  
l Although much effort has been made to., this reality is far from *X0>Ru[  
completion. Gwd38  
l The results indicate that the total benefits are higher than the q/O2E<=w*c  
total costs. j=r1JV @  
l Their results may then serve as guidelines for lower level models, g~hMOI?KK^  
less fuzzy and more detailed. IO)B3,g  
Chapter 6. Conclusion {'b;lA]0  
l From the discussion, one may conclude that ... gAAC>{Wh  
l Form the above discussion, the conclusion can be reached that o/pw=R/):  
l The conclusions drawn are also valid OBi(]l}^O  
l In conclusion to this, it becomes obvious that the problem of xx T$;S   
lies not only in... \jfK']P/H  
l We have attempted to introduce some concepts associated with a {JE [  
theory of h;V 4|jM  
xx based on fuzzy sets. Qs1p  
l Considerable more work, hopefully, will be done in this area M%E<]H2;S  
l A fuzzy set procedure is proposed to solve xx selection problems f@i#Znkf*?  
AjK5x@\  
interwoven with imprecise data 5,Fq:j)MxW  
l Employing the compositional rule of inference, the assessment of OxHcoNrz  
the xx compatibility in achieving prescribed xx projectiles in any NBk0P*SI  
level of the hierarchy is made possible. ~.T|n =  
l This paper has presented a theoretical and experimental study of oJa}NH   
the xx process and xx concept. VeQGdyh Y  
l The experimental research results will hopefully serve as useful /EjXyrn2  
feedback information for improvements for xx work. ,`f]mv l  
l The scope of this contribution was to introduce a xx method. , >7PG2 a  
l In general, fuzzy sets theory provides an alternative foundation /@\`Ibe  
for xx analysis in a fuzzy environment. , 5W7a  
Future Research JC cYFtW  
l Thus, first extension of the approach could be, OlT8pG5Oa  
l Present some cues for a further approach from Fuzzy Sets Theory )0/9 L  
application to (.UU40:t  
l Some improvements to the scheduling aspect of the model may 2E1`r@L  
be brought through additional levels in the hierarchy for more p7QZn.,=u  
detailed representation of the scheduling activity. fXMY.X>f  
Tables and Figures |y^=(|eM  
l Figure 7-1 sketches these relationships. Lg<h54X  
l The graphical representation of these functions is shown in Figure nP%U<$,+  
1. rt^~ I \V  
l The xx may be depicted as in Figure 1. ,IB\1#  
l Figure x shows the schematic diagram of the V/#Ra  
l Figure 1 though 2 provide a ... that ]hV!lG1_  
l the architecture of this expert system for .... is illustrated in Figure p3vf7eqn  
2. @ujwN([I  
l Figure 2 gives the outline of an ... system d.? }>jl  
l Table shows the b? o  
l as shown in Table 1 and 2 =mXC,<]  
l This concept is illustrated in Figure 2 W{-g?)Tou  
l At the top of Table xx are shown two blocks of data. q=pRe-{  
UN'n~d @~  
l Each table or matrix has constructs xx through xx as -6+7&.A+  
row-headings, {dZ]+2Z~+  
xx through xx as column-headings. 1_t+lJI9j  
l A table of .. is developed and significant recommendations are ]A2E2~ ~G  
made. l:'#pZ4T  
CONJUGATION >Lo\?X~  
To Indicate Addition ?Kgb-bXB  
l additionally, again, also, and then, as can be easily understood, E !ndXz 59  
besides, equally important, especially, finally, for the same reason, eyK xnBz  
first, further, furthermore, in addition, last, likewise, moreover, next, IW~wO  
second, third, too, evidently, obviously, roughly speaking, broadly Zp)=l Td  
speaking 0Agse)  
To Indicate Cause and Effect k\[(;9sf.  
l accordingly, as a result, consequently, for this reason, hence, in wj6u,+  
short, otherwise, then, therefore, thus, truly est  iS  
To indicate Comparison YH\9Je%jx  
l in a like manner, likewise, similarly , alternatively 36{GZDGQ  
To Indicate Concession =sk[I0W  
l after all, although this may be true, at the same time, even though, b7>'ARdbzX  
even so , I admit, naturally, of course %_W4\  
To Indicate Contrast Nbr$G=U  
l and yet, at the same time, but, for all that, however, yet, in fact, in Qn8xe,  
contrast, in the real life, in spite of, nevertheless, notwithstanding, dCi:@+z8  
normally, on the contrary, on the other hand, still, traditionally, T)gulP  
rather, unfortunately, :m<&Ff}  
To Indicate Time Relationships: ;(?tlFc  
after a short time, afterwards, as indicated earlier, as long as, as soon ] :;x,$k  
.yy-jf/  
as, at last, at length, at the moment, at that time, at the same time, K#+?oFo:  
before, earlier, currently, immediately, in the meantime, in recent @#4-4.6I<x  
years, lately, later, meanwhile, often, of late, presently, recently, Jx5`0?  
soon, shortly, since, thereupon, temporarily, therefore, until, when, esJ7#G xt  
while upuN$4m&{  
To Indicate Special Features or Examples: tfU*U>j  
for example, for instance, incidentally, indeed, in fact, in other words, E@ :9|5  
in particular, in practice, specifically, that is, to illustrate, in this 7,SQz6]  
respect, theoretically, as mentioned before / above Oin9lg-jR  
To Indicate Summary: |@AXW   
in brief, in conclusion, in short, in summary, on the whole, to OL 0YjU@  
conclude p{L;)WTI  
, in general, to summarize, to sum up, as a result, ultimately, e\C-a4[C8P  
VERB PHASE $Er=i }`  
l build a .. model wGti |7Tu*  
l build up the key link 9InP2u\&:  
l began a new era in ... KdCrI@^  
l can be regarded as / achieved / used to/for / found / obtained 4<-Kd~uL  
through D<J'\mo  
l can result in Q|)>9m !tt  
l carries out ... tasks ? uYO]!VC  
l production information in order to simultaneously i%9vZ  
l contains all information necessary to describe zgGysjV  
l do not make use of production information v8-My1toV  
l deals with 3wv@wqx  
l end with failure n0=]C%wr  
l fetch the information from the model directly  zjUQ]  
l has great potential / yet to be resolved / spurred the  z[f]mU  
development of / 'm Z v5?  
been recognized as zdwQpB,+^  
l BE aimed at / built up / carried out by / essentially concerned WVeNO,?ytS  
>2s6Y  
with / considered to be the key technology / associated with each t5E$u(&+'B  
feature of a compo nDvfb* \  
site component / cable of / currently implemented for / :\~>7VFg  
demonstrated by an example / finally reached / made equal to / }K)A jZ  
equivalent to / more suitable to / oriented to / interpreted as / b*Qd9  
pointed out / potentially of great benefit in the complex task of / g}hUCx(  
shown in / used to effectively guide the search C[,h!  
l makes use of 1R}9k)JQ  
l make up ]izHn;+  
l meets the needs of real life production,/ the current demands m ^oG9&";  
placed upon it &Z~_BT  
l must be justified >c0leT  
l point out Y A,. C4=s  
l play an important role N[Xm5J  
l relates to @2"uJ6o  
l rely on zmQQ/ 7K  
l satisfy the needs 'ij+MU 1  
l determine the total requirements for the ... <p<6!tdO  
l uses ... as a key to search for... Ia%cc L=  
l without relying on |\Gkhi>;  
l will be available/ performed/ overlooked =EVB?k ,  
NOUN PHASE =A5i84y.2u  
l a basic technical function of (A2ga):Pk  
l a critical need jy~hLEt7  
l a key / principle feature of y3( ~8n  
l a substantial impact on NdJ]\>5oN,  
l an intensive review was conducted JVg}XwR  
l an increasing need for expanding the application of .... c@,1?q1 bv  
l an important component / function / aspect / issue f]10^y5&  
l each rule is numbered in sequence b6;MTz*k>  
l each of these involves 0>m$e(Z  
l for this calculation, it is necessary to define T=w0T-[f  
l in the physical environment / integration of [|$C2Dhw=  
>Ch2 Ep  
l in the reality of situations where … dgQ<>+9]6  
l many aspects of &iD&C>;pf  
l most past efforts have been spent on ... jKcl{',  
l common sense to a well studied and documented technical field. DCa=o  
l sources of additional information on ... are listed &9gI?b8  
l systematic and rationally structured format F'wG%  
l the basis on which a range of ...operations can be established is nIOSP :'>  
shown T g(\7Kq  
l THE basic philosophy / principles of / key element / general \1?'JdN  
hypothesis / candidate list of / concept of ... has attracted wide -m ,Y6  
interest / function is concerned with / heart / impact / nature / role p1GP@m,^n0  
/ task of / kernel functions OGH, K'l  
l the number of parts needed to BC#`S&R  
l the above statement means that 3it*l-i\  
l the output data is passed to asQ^33g z  
l the proposed method / underlying principle 6e|uA7i 4  
l the recommendations made in this report, if implemented, should e~he#o[%a  
l this information resides in s{c|J#s  
l this process is composed of ... different ... operation lV./K;\T  
l along with the use of K{Nj-Rqd  
l concerning general aspects of -oZw+ge}  
l due to b5~p:f-&4B  
l for later use in generating..., )yz) Fw|&  
l in turn, 5l d?N2<8/  
l IT IS believed / noted / assumed / suggested / shown / quite 7^!iGhI]r  
evident / appears / implies that / intended for / of no important to /Aw@2 6  
l it can be claimed/concluded that M`iE'x  
l it demonstrates the decisions required of Q"!GdKM  
l it also provides information to .. Rw63{b/  
l it becomes essential to hVz]' ,  
l let ... be the probability that mU[  
l once... is written, it is compiled into... 5|}u25J  
l suppose it is observed that :"nh76xg<  
l this is because IW}Wt{'m  
SgN?[r)  
l this results in a /nh3/[u  
l upon completion of the ... analysis, B<.ZW}#v  
l when the knowledge is of mathematics or quantum physics, it will 4UPxV"H  
also be 6#:V3 ;  
recorded in books and papers g&_f%hx?  
l selection of rules for using the tools, for generating operation oZL# *Z(h  
plans, E KJ2P$  
is another matter of preference, since practice varies greatly. K|D1  
l for the sake of convenience n b*`GE  
l correct decision to be reach 6 !Mm")  
l keeping the number of rules to a minimum. V HLNJnA  
l a good process plan will result exhibiting several characteristics: IO2@^jup  
l practical solutions @'Pay)P  
l because of rather small job lot sizes tu ;Pm4q7  
l Backward reasoning can be used to answer the question "should B <G,{k  
milling tool be select" different level of knowledge in the realm of YKOj  
process planning
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沙发  发表于: 2007-11-14   
Very useful, thank u!
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