In this research we will study an algebraic structure d-algebras. Then we establish an algorithm to check any sets in d-algebras if they are ideals or T-fuzzy d-ideals. Moreover we investigate some related properties in d-algebras.

This research aims to study 1) personal characteristics that affect the purchasing behavior of consumers in convenience stores in Nong-Don District Saraburi province and 2) retail market factors that affect the purchasing behavior in convenience stores in Nong-Don District Saraburi province. The sample group used in the research consisted of 400 people in Nong Don District Saraburi province. The instrument used for data collection was a questionnaire. The statistics used for data analysis were percentage mean standard deviation a statistical significance test with a value of 0.05. The results of the research are that 1) most of the sample groups were female aged 21-25 years with status occupation student a monthly income less than or equal to 10000 Baht and an education level below bachelors degree. 2) Furthermore factors influenced the purchasing behavior in convenience stores. Overall the average score was at the highest level. The process had the highest average score followed by the product and distribution physical characteristics personnel and marketing communications. The aspect with the least average score was the price. 3) Shopping behavior in convenience stores was analyzed by hypothesis testing. It was found that different sexes had different purchasing behavior in convenience stores in Nong-Don District Saraburi province. It was significantly different at the 0.05 level and age marital status occupation monthly income educational backgrounds. The different is consumers purchasing behavior in convenience stores in Nong-Don District Saraburi province were significantly different at the 0.05 level. Retail market factors like products price distribution marketing promotion personnel process and physical appearance affect the purchasing behavior in convenience stores in Nong-Don District Saraburi province.

The objective of this study was to develop the Homemade Black-Sesame Butter recipe. By adapt from 3 basic Peanut Butter recipes by replacing peanut to black-sesame 100% by total peanut weight. And improving the texture (spreading) by added Rice Bran Oil Shortening in 4 different level are 0% 10% 20% and 30% by total product weight. Randomized Complete Block Design (RCBD) was used to evaluate the sensory quality in terms of appearance color odor taste texture (spreading) and overall liking. Recorded the results of the characteristic of Homemade Black-Sesame Butter in the list with description to choose the best formula to get the experimental result. The result showed that the first formula of Homemade Black-Sesame Butter by replacing Peanut to Black-Sesame 100% by total Peanut weight. The characteristics are coagulated appearance matt-black color strong sesame odor medium sweet and the texture (spreading) showed that spread better than another recipe. Therefrom improving the texture (spreading) of Homemade Black-Sesame Butter by added Rice Bran Oil Shortening. The study showed the added level at 30% of Rice Bran Oil Shortening by total product weight of Homemade Black-Sesame Butter. The characteristics are coagulated and sticky appearance glossy black color high sesame odor lower sweet than the previous and very smooth texture (spreading). Homemade Black-Sesame Butter formula ingredients are cooked fine crush Black-Sesame 85% Rice Bran Oil Shortening 36.1% Soybean Oil 3% Powdered Sugar 1.7% Honey 3% and Salt 1.2% by total ingredients weight

Teaching and learning in the 21st century is not as focused on lecture notes as in the past. Students must listen to the teacher and answer exactly as the teacher teaches but emphasizes as the instructor is a coach or a facilitator is not a teacher that teaches only and must be organized Learning for change (Transformative Learning) is learning to make changes within oneself including worldview affective attributes cognitive attributes and behaviors (psychomotor attributes) is to change dramatically complete in all aspects it is a change known as the Holistic Change” (Thitirat Raksasri 2019). Learning with digital technology is considered a learning style suitable for the new generation. Because it is a model that can use technology to be useful in teaching and learning both inside and outside the classroom. Result in new learning styles such as massive open online courses (MOOCs) or other learning channels such as video computer games social media and audio media (OKMD 2019). It is therefore a good opportunity for students to be able to choose a learning style that is suitable for themselves. According to a study by Jiratan Prayaruwong (2019). It was found that learning English using digital media technology allows learners to develop and develop proficiency in English. It can be used to study and search for knowledge and information by oneself in the 21st century and achieve complete and effective lifelong learning skills. Therefore teaching and learning English integrated with digital technology and practical training it is a suitable idea for the development of English communication skills of Thai youth in the 21st century and in line with the education reform policy the national strategy for the development and enhancement of human resource capacity of Thailand at present (Nattaphon Teepsuwan 2019).

This research aims to for the development of an automated message response system using the LINE bot program for supporting information technology work. For supporting the reporting of computer problems the Internet the use of audiovisual equipment within the Faculty of Business Administration. Including basic troubleshooting for users. The results showed that developing an automated message response system using the LINE bot program. For IT support the use of Line Bot by using Line to report problems enables better interaction between users and device administrators. Allows users to be aware of basic solutions. Which is also a convenient and quick way to report problems save cost because within the area of the Faculty of Business Administration Rajamangala University of Technology Phra Nakhon has full internet service that the lecturer and staff can connect internet at all times.