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The proses of decision-making in stock investment considers criteria based on the personal preferences of each investor. In addition, investors also need to analyze fundamental factors that include quantitative and qualitative criteria in which external or internal factors are affecting the company. This is because stocks have a high level of risk, so the selection of a portfolio must be done with the right decision. In making decisions based on many criteria can use fuzzy AHP (analytical hierarchy process) and fuzzy TOPSIS methods. The use of fuzzy logic because it can to cope the subjective assessment result of investor preferences. The fuzzy AHP method is applied to obtain the weights of each criterion which are the factors of stock fundamental analysis. The fuzzy TOPSIS method is applied to determine the ranking of alternatives. Based on the analysis and calculation, the most influential sub criteria is inflation rate and top alternative is the company with the BBNI stock code. Keywords: Decision-making, Fuzzy AHP, Fuzzy TOPSIS MSC2020: 90B50, 91B06, 62C86

Limbah Taman Kampus berupa rumput pahitan berpotensi sebagai pakan ternak ruminansia karena kandungan selulosanya yang tinggi, namun selulosa tersebut masih dalam bentuk lignoselulosa yang menurunkan ketercernaannya pada rumen ruminansia sehingga bentuk lignoselulosa tersebut perlu didegradasi untuk menurunkan kadar lignin sebagai zat anti nutrisi. Fermentasi limbah rumput pahitan menggunakan Kapang Pelapuk Kayu Indigenous Thermothelomyces guttulata KLUM2 merupakan metode alternatif untuk menurunkan kadar lignin dalam menciptakan kadidat pakan ternak yang mudah dicerna dari limbah rumput pahitan. Tujuan penelitian ini adalah mengamati pengaruh jumlah spora dan waktu fermentasi terhadap kandungan lignin, lemak kasar, dan protein kasar selama fermentasi rumput pahitan oleh kapang pelapuk kayu Thermothelomyces guttulata KLUM2. Penelitian ini merupakan penelitian eksperimen laboratories menggunakan metode RAL dengan variasi jumlah spora (1,23×107; 3,07×107; dan 6,14×107sel) dan waktu fermentasi (14 dan 21 hari). Tahapan penelitian ini: (1) Preparasi limbah rumput, (2) Preparasi suspensi spora Thermothelomyces guttulata KLUM2, (3) Fermentasi limbah rumput pahitan oleh Thermothelomyces guttulata KLUM2, dan (4) Analisis kadar lignin, protein kasar, dan lemak kasar. Hasil penelitian yang dilakukan menunjukkan bahwa fermentasi limbah rumput pahitan dengan Thermothelomyces guttulata KLUM2 mampu menurunkan kadar lignin dan meningkatkan kadar lemak serta protein kasar, namun secara umum tidak dipengaruhi oleh variasi lama dan jumlah spora. Kondisi optimum yang diperoleh adalah kombinasi jumlah spora 6,14x107 sel dan waktu fermentasi 21 hari menghasilkan kadar lignin, kadar lemak kasar dan kadar protein kasar berturut-turut sebesar 12,20±0,25%; 2,51±0,38%; dan 11,17±0,08%. Berdasarkan hal tersebut maka fermentasi menggunakan KPK Indigenous Thermothelomyces guttulata KLUM2 berpotensi dalam rangka menciptakan pakan ternak yang mudah dicerna oleh ruminansia.

Backpacks are the main choice for students as a means of carrying school supplies and materials, but often they do not pay attention to the weight of the load they carry every day, potentially causing injuries and pain in the back. This study aims to design and implement a capacity limit measuring device on children's school bags using the ESP32 microcontroller as the control center. The tool is equipped with a 10kg load cell sensor to accurately measure the weight of the bag, as well as a keypad as a user interface to easily enter the child's weight. Safety is also considered with the addition of a buzzer as an alarm if the weight of the bag's capacity exceeds the set limit. GPS trackers are also integrated to monitor the geographical location of bags, allowing parents to monitor the movement of children and the location of bags directly through Telegram bots. With ESP32 as the brain, this tool provides a comprehensive solution to maintain the health and safety of children in carrying their school load. This tool also utilizes Telegram technology to provide direct notifications about the weight and location of children's bags to parents or other users. Telegram bots connected to this tool automatically transmit this information, providing additional convenience and security for users. [ABSTRACT FROM AUTHOR]

This study was aimed at describing the link between the second year students’ critical thinking skill and their argumentative writing skill at Islamic Senior High School in Palembang, South Sumatera, Indonesia. There were 60 students participated in this study. The data were obtained by using two instruments: Cornell Critical Thinking Test (CCTT) and argumentative writing test. Pearson Product Moment Correlation Coefficient and regression analysis were used to analyze the data. From the result, statistically significant positive link between students’ critical thinking skill and their argumentative writing skill was found with correlation coefficient .695, and the p-value was (.000) lower than significance value (.000 < .005). Since there was a significant link, regression analysis was used. As the result, critical thinking skill had 48.4% contribution to the students’ argumentative writing skill. In short, critical thinking skill had relationship with argumentative writing skill, and it gave 48.4 % constribution to the students’ argumentative writing skill.