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in xx. 28. Since then, the subject has been extensively explored and it is still under investigation as well in methodological aspects as in concrete applications. 29. Many research studies have been carried out on this topic. 30. Problem of xx draws recently more and more attention of system analysis. 31. Attempts to resolve this dilemma have resulted in the development of 32. Many complex processes unfortunately, do not yield to this design procedure and have, therefore, not yet been automated. 33. Most of the methods developed so far are deterministic and /or probabilistic in nature. 34. The central issue in all these studies is to 35. The problem of xx has been studied by other investigators, however, these studies have been based upon classical statistical approaches. 36. Applied ... techniques to 37. Characterized the ... system as 38. Developed an algorithm to 39. Developed a system called ... which 40. Uses an iterative algorithm to deduce 41. Emphasized the need to 42. Identifies six key issues surrounding high technology 43. A comprehensive study of the... has been undertaken 44. Much work has been reported recently in these filed 45. Proposed/Presented/State that/Described/Illustrated/ Indicated/Has shown / showed/Address/Highlights 46. Point out that the problem of 47. A study on ...was done / developed by [] 48. Previous work, such as [] and [], deal only with 49. The approach taken by [] is 50. The system developed by [] consists 51. A paper relevant to this research was published by [] 52. []'s model requires consideration of... 53. []' model draws attention to evolution in human development 54. []'s model focuses on... 55. Little research has been conducted in applying ... to 56. The published information that is relevant to this research... 57. This study further shows that 58. Their work is based on the principle of 59. More history of ... can be found in xx et al. [1979]. 60. Studies have been completed to established 61. The ...studies indicated that 62. Though application of xx in the filed of xx has proliferated in recent years, effort in analyzing xx, especially xx, is lacking. Problem / Issue / Question 63. Unfortunately, real-world engineering problems such as manufacturing planning do not fit well with this narrowly defined model. They tend to span broad activities and require consideration of multiple aspects. 64. Remedy / solve / alleviate these problems 67. ... is a difficult problem, yet to be adequately resolved 68. Two major problems have yet to be addressed 69. An unanswered question 70. This problem in essence involves using x to obtain a solution. 71. An additional research issue to be tackled is .... 72. Some important issues in developing a ... system are discussed 73. The three prime issues can be summarized: 74. The situation leads to the problem of how to determine the ... 75. There have been many attempts to 76. It is expected to be serious barrier to 77. It offers a simple solution in a limited domain for a complex problem. 1. There are several ways to get around this problem. 2. As difficult as it seems to be, xx is by no means new. 3. The problem is to recognize xx from a design representation. 4. A xx problem can trace its roots to xx. 5. xx [1987] used a heuristic approach to simplify the complexity of the problem. 6. Several problems are associated with t