Species composition and reproductive phenology of aquatic plants in Na Haeo District. Loei Province Northeastern Thailand were conducted from October 2008 to September 2009. A total of 85 species 67 genera were identified from 37 families. Of the 85 species there were 4 species of lower plants and 81 species

The purposes of this study were to investigate students problems of Rajamangala Institute of Technology Bangkok Commercial Campus in three aspects ; educational social and economic problem. The subjects were comprised of 1000 students in the 2002 academic year. Data were collected by questionnaires and analyzed by SPSS -PC program. Various statistic methods were used for data analyzing such as percentage means standard diviation t -test and F -test. Research results were as follows: 1. The students problems had significance lower than criteria (3.00) in educational social and economic problems at 0.05 significant statistical level. 2. The comparing of students problems in educational and economic aspects was found that there was no significant difference at 0.05 statistical level. 3. The comparing of students problems in social aspect classified by students groups parents income and parents marital status was found that there was significant difference at 0.05 statistical le

The inventory is being counted as an important circulatory asset because of its highly investment. Moreover other assets investment can not be done to make any profits without selling the inventory out. If any businesses have got too many inventories the investment will be embedded in these assets resulting in too much spending on storing taking risk of losing damaging being out of date and lacking of the circulation of the assets. On the contrary if too little amount of inventories are stored there will be too many times for ordering goods. Cost of order will also be high and lose of selling opportunity because they dont cope with the customers need. If the business lacks of an effective inventory management many problems will affect the business operations such us lacking of money circulation lacking of profiency etc. That leads to the lose of investment and the damage of businesses. The study of liThe Executives Opinions Towards the Inventory Management of the Enterprises in Bangkok was to : (1) study the executives opinions towards the inventory management of the enterprises in Bangkok; ( 2) find the guideline to develop the inventory management more efficiently ; and(3) compare the executives opinions and their guideline to develop the inventory management of the merchandising enterprises and the manufacturing enterprises in Bangkok. The population used in this study was the merchandising enterprises and the manufacturing enterprises in Bangkok which these data were collected from the Ministry of Commerce. About 400 staff from 2 types of the mentioned enterprises were accidentally sampled. The questionnaires and the interviewing form were used as the tool to collect the data. The data were analyzed as mean standard deviation and t -test independent samples. The findings were as follows: (1) The executives from the enterprises thought that business sectors should plan and control the inventory efficiently to control the inventory to be at the appropriate level not too high or not too low and they should predict customers need precisely as well as being able to specify the best quantity of order and the best location of stock order. The total expenses of the inventory should be controlled at the lowest rate which the inventory มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร .. circulation was in higher rate and could solve problems of the out of date and the damaged assets problems resulting in cost decrease and good assets circulation. (2) The executives suggested that the guidelines in development of the inventory was that new advanced technology and the information technology should be presented in business operating to cope with the continuously assets movement. the enterprises could fix quantity of order nearly as the business sectors demand in various period of time which caused higher assets circulation less inventory less investment and the least cost. This will lead to less price setting and gave more advantage in business competition. (3) The comparison of the executives opinions and their guideline to develop merchandising enterprises and the manufacturing enterprises in Bangkok showed that the executives from both sectors had the same opinions. Suggestions : small business sectors should apply the executives experiences to make a plan predict customer need find the quantity of order by using the previous statistic data and the customers request as their criteria. The computerized bar-code has not yet been used to order and purchase the assets in the inventory since it needs high cost investment and non-controlled inventory expenditure which lead to decrease cost of investment.

The purposes of the study are 1) to develop the translating ability of undergraduates in Business English Field 2) to perceive learning activities problems and 3) to know the undergraduates attitude towards the learning activities using the Reflective approach and Group Investigation technique. The sample used in this study was 38 undergraduates of the Business English Field Academic Year 2006 of Rajamangala University of Technology Bangkok Commercial Campus. The researcher provided the undergraduates 50 business news per a week for 10 groups totaling 300 business news to study trough the seventh stages of the Reflective Approach and Group Investigation technique combination: stage1 student selected a business news to be studied stage2 students planed together and divided labor stage4 students prepared the final report stage5 was a presentation of the report to the class stage6 was an evaluation of each group work and stage7 was a reflective learning recording in the reflective learning form. The study was carried out 13 weeks for forty-two 50 minute periods. The experimental design was one group pretest and posttest design. The instruments used in this study were: 1) the preparation plan 2) The Reflective Approach and Group Investigation learning-activities plan 3) pre and post tests 4) summative tests 5) the RA and GI learning-activities working-observation forms 6) the Reflective leamingrecording form and 7) attitude questionnaires. All datas were statistically analyzed by mean percentage and the t-test