Tien-Tsai Huang

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Among all kinds of investment activities, security's transaction is an important activity among all investors' involvements in the past decade. How to find out the relationships between a security's name, price, trading quantity, and/or other scientific technical indices, humane feeling, and how these factors affect the buy or the sell timing is an(More)
In terms of flexibility and product variety in lot-sizing systems of crisp cases, the average demand of per unit of time (mj), the relative duration of setup (qj), and the unit cost of production (cj) are considered. Instead of using the usual method that the mj, qj, and cj in the total cost function are respectively fuzzified by the triangular fuzzy(More)
In recent years, the existing universities of Taiwan face crucial competition due to the multiple impact of the decreasing rate of birth, widespread establishment of new universities, and the opening of branch divisions of foreign universities in Taiwan. In order to survive and develop in such an environment, university authorities need to improve service(More)
1 According to the statistical random sampling method, estimation has been taken confidence interval into account in statistics due to the unknown probability for the deviations of point estimate. In terms of fuzziness or vagueness, confidence interval is defined as a range of numerical values, not a single value, so we have to discover an estimate for that(More)
In real world, there are many uncertain conditions which cannot be absolutely pre-determined or controlled by the decision maker. Then, by the empirical experience in the market behavior, there are no fixed carrying cost rate, interest paid rate and interest earned rate. In this paper, we will extend Chen et al. [1] model with fuzzification in the carrying(More)
This paper extends the previous EOQ models with two-level trade credit to reflect the real-life situations by incorporating the following concepts: (1) the supplier offers the retailer an up-stream trade credit linked to order quantity, and (2) the dispensable assumptions of the up-stream trade credit is longer than the down-stream trade credit (N <; M)(More)
The Shewhart control charts are still subject to new application areas that deserve further attention. If the quality-related characteristics cannot be represented in numerical form, such as characteristics for appearance, softness, color, etc., then control charts for attributes are used. except for the special cases, fuzzy control charts are used for(More)
There are u main evaluation criteria, for each i &#x03B5; {1,2,&#x2026;, u}, under each i<sup>th</sup> criterion, there are k<inf>i</inf> second evaluation criteria,. These criteria are assessed by r experts with linguistic terms and transformed into corresponding triangular fuzzy numbers. Thus the weights can be derived from these criteria in the fuzzy(More)