Science and technology will facilitate human work. However, on the other hand it will increase competition. In facing intense competition, it is necessary to have competent human resources. Students are expected to be academically prepared, in the form of knowledge and skill readiness to face increasingly fierce competition. One way to see student competence is to look at learning outcomes that can be represented by the exam scores taken. The midterm exam (UTS) is a form of exam which is an assessment component. By knowing the UTS scores, the lecturer knows the distribution of students in terms of academic competence. For this reason, it is necessary to group (clustering) using the k-means algorithm as a consideration for lecturers in forming student study groups based on UTS value clusters.

Indonesia merupakan negara yang kaya akan sumber daya alam, dengan kondisi tanah dan musim yang cocok untuk sektor pertanian. Indonesia juga dikenal sebagai negara agraris karena sebagian besar mata pencaharian masyarakat Indonesia berasal dari sektor pertanian yang memegang peranan penting bagi perekonomian Indonesia. Sektor pertanian berkontribusi besar bagi perekonomian indonesia. Hal ini dilihat dari pertumbuhan domestik bruto (PDB), pertanian merupakan tiga besar penyumbang Produk Domestik Bruto (PDB) nasional yang tumbuh bersama industri dan pertambangan yaitu sebesar 12,98 persen dengan pertumbuhannya sebesar 1,37 persen. Penentuan daerah penelitian ini dilakukan secara sengaja (Purposive Method) yakni di Kabupaten Nias, Provinsi Sumatera Utara. Adapun pengambilan sampelnya adalah petani sebanyak 30 responden yang berada di Kecamatan Somolo-molo dari populasi seluruh petani yang berada di Kabupaten Nias. Metode analisis data yang digunakan dalam penelitian ini adalah metode deskriptif. Dari hasil penelitian disimpulkan bahwa Kabupaten Nias memiliki potensi besar dibidang pertanian yaitu dibidang SDA, iklim, luas lahan pertanian dan Sumber daya manusia (SDM) yang mayoritas bekerja sebagai petani. Tantangan yang dihadapi dalam pengembangan pertanian di Kabupaten Nias adalah ketersediaan bibit, pupuk, dan pestisida, rendahnya pengetahuan petani akan teknologi, teknik budidaya yang masih konvensional, kurangnya perhatian pemerintah, pertanian dipandang sebelah mata, rendahnya minat regenerasi muda untuk terjun ke dunia pertanian dan rantai niaga yang merugikan petani. Strategi yang dapat dimanfaatkan dalam pengembangan pertanian di Kabupaten Nias adalah pengembangan bibit unggul dari tanaman sendiri, pertanian berbasis teknologi, digitalisasi informasi dan pemasaran produk pertanian, pembangunan infrastruktur pendukung pertanian, kebijakan pemerintah yang pro dengan petani dan pertanian.
 
 

This study examined the principal's communication style in encouraging learning effectiveness during the pandemic in junior high school. Previous studies have not explored the principal's communication style in encouraging the effectiveness of online and limited face-to-face learning during the pandemic. This research used a qualitative case study method. The data collection techniques were interviews with one principal, eleven teachers, three education staff, five students, three parents, observation on the learning process, and document data analysis. This research used the six leadership communication styles approach from Tubbs and Moss. The study found that the principal applied the equalitarian, structuring, dynamic, and relinquishing styles. The learning process was adequate to achieve the score and graduating target. Therefore, the learning effectiveness needed improvement because there needs encouraging student activity, improving the teacher's capacities, and encouraging parent participation in the learning process. The principal's communication styles encouraged overcoming barriers due to the lack of online interaction and limited face-to-face learning but did not directly improve the learning effectiveness problem. The principal's communication styles failed to encourage learning effectiveness because the problem was not only communication. The principal was not arranged a particular assessment to solve the learning effectiveness problem.

One of the most memorable films from our childhood would be "Mulan" by Disney. When most of the Disney princesses show us the glamour, the elegance of being a princess, “Mulan” shows us something else, like a battlefield, army, war, and lots of other things that may sound new and fresh from a child's perspective. People watch Mulan on her journey to become China's saviour. Ignoring the line that separates a man from a woman she kept her head up and worked hard to become the perfect soldier for her land. Despite showing her capability in fight and strategies to help her comrades survive the battlefield, she still faces rejection and anger when people around her find out that she is a woman. But she still tries her best to save the country by protecting China's emperor when he faces life and death situations caused by the enemies. Her success caused a lot of people to acknowledge her power as a woman and praise her. This paper will study the female representation of “Mulan”. A qualitative method will be used to conduct this study to show educational values in “Mulan” by Disney.

The high level of poverty in Indonesia encourages the government and social institutions to seek to provide social assistance to the community in improving welfare, especially during the COVID-19 pandemic, in the form of basic necessities, cash, and other forms of subsidies. However, sometimes the distribution of social assistance is not well-targeted so that some people should receive the assistance but are not touched at all. Then the data obtained are also still manual so it takes time in making decisions. Therefore we need a method that can assist in making decisions quickly with the help of computers. One of the methods used in making these decisions is the Fuzzy Analytic Hierarchy Process (FAHP) which is widely used for solving decision-making problems with many criteria. Fuzzy AHP itself is a combination of the analytic hierarchy process (AHP) method and fuzzy theory. In this study, several criteria were determined in the selection of recipients of social assistance, namely employment, expenditure, clothing, food, and housing. Furthermore, the alternative recipients of social assistance that will be selected are compared based on predetermined criteria. The highest value which is the result of Fuzzy AHP calculations can be used as a recommendation for decision-makers in selecting social assistance recipients.
Keywords: fuzzy, ahp, decision support system.   

Management of medical actions carried out in handling patients who are ODP (people under monitoring), OTG (asymptomatic people), PDP (patient under monitoring) and positive Covid-19 patients is carried out based on assumptions, such as self-isolation, hospitalization, or special treatments in the ICU (Intensive Care Unit) room. The condition of the body in each patient is different, a patient may have same symptoms but the treatment is different, especially in elderly patients. Many problems occur in determining medical action because the patient's body condition is different. Therefore, it needs to be appointed as a research. The research method used in this study was Nive Bayes algorithm with supporting application Rapid Miner. It was applied to carry out the process of testing on patient data as much as 500 data, 25 variables or patient symptoms and 3 outputs as a form of medical action. Based on the results of the analysis carried out in this study, prediction of medical actions for ODP, PDP, OTG and positive Covid-19 patients were obtained by comparing training data with testing data using Rapid Miner application. It resulted that an accuracy rate of 76.00% was obtained

The waste processing and renewable energy are being the issues in the industrial 4.0 era. Kitchen and organic trash in the rural areas will become a disaster if there is no solutions. On the other hand, kitchen and organic waste have a positive side, that they can be converted into biogas which can be converted into electricity. On the Minister of Energy and Mineral Resources Regulation Number 27 of 2014, supports the development of biogas and will buy electricity from the biogas conversion. The potential for biogas that obtained by the organic trash per 1000 people is 7619.8 liters of biogas, it meas that the energy contained is still abundant and the production can still be increased if processed with a modern digester system. This research produces a tool in the form of a portable digester that named GenBIoT (IoT-based Biogas Generator) which can be used by the public to produce biogas that  used by home industries or general factories. This research used the research method that similar to System Development Life Cycle (SDLC), this tool is built with several stages starting from planning analysis, designing, functional testing, data analysis and reporting of the results or implementing this tool that can be used as an alternative, as a cheap and easy source energy. This tool is based on the Internet of Things so that this tool can be monitored regarding gas pressure in the reactor, biogas volume and it will detect if there is a biogas leak so it will displayed on the system. To produce the maximum biogas composition, 50% of cow dung is required, 40% of kitchen trash and 10% of water with a ratio of 5: 4: 1 so it will produce 40 kg of biogas with a volume of methane gas (VGM) 0.11 m3 of biogas for cow dung. and 0.04 m3. The third experiment becomes the basis of future biogas production with energy produced from biogas per day of 716.39 Wh

Student satisfaction at a university could predict the continuity of the university. Therefore understanding and improving student satisfaction needs to be done. This study provides an alternative model of student satisfaction instruments at private universities. The research methodology consists of a series of literature reviews, interviews, expert validation and testing the validity of the instrument using the Rasch model. The respondents of this study were 543 students from 6 faculties in a private university. Research findings include: (1) student satisfaction instrument models; (2) items that are difficult to approve; and (3) items perceived differently based on respondents' demographics. This research has implications for the management of private universities to improve some domains of student satisfaction.