Based on the Department of Agriculture which still does not have the tools or media to manage the letter of service, both the incoming and outgoing mail which impact on the weak supervision follow-up of the service letter due to ignorance that the letter should be processed. This study was made as a visual and text notification of incoming and outgoing mail data with more detailed archive storage. This website application is supported by using social media telegram API service that is used as notification in the form of notification to the employee so that the Service Letter can be followed up immediately.

Ekstrak aseton didapatkan dari daun Tristaniopsis merguensis Grifft menggunakan metode maserasi. Ekstrak aseton selanjutnya difraksinasi dengan metode partisi cair-cair dengan pelarut etil asetat. Penentuan kadar fenolik total dilakukan berdasarkan metode Follin-Ciocalteu dengan standar asam galat. Hasil penelitian ini menunjukkan bahwa fraksi etil asetat dari ekstrak aseton daun Tristaniopsis merguensis mengandung senyawa fenolik total 86,724 ± 1,83 mg GAE/g fraksi etil asetat kering. Berdasarkan spektrum FT-IR fraksi etil asetat ini mengandung senyawa yang memiliki gugus Ar-OH (fenolik), -OH (hidroksil), C=O (keton) dan C=C (aromatik). Gugus Ar-OH ini yang menandakan adanya senyawa fenolik pada fraksi etil asetat ekstrak aseton daun Tristaniopsis merguensis.

This study aims to determine the effect of the use of guided inquiry methods on students' science learning results at SDI Wae Ratun. This school is one of the schools in underdeveloped regions. This type of research is a quasi-experimental study with posttest only control group design research. The subject of the study was the fifth-grade students with sampling techniques using random class techniques. The sample chosen in this study was class V B as the experimental class and class V A as the control class. The instrument used is a test in the form of multiple-choice questions. Data analysis uses descriptive and inferential statistics. The results of data analysis obtained the calculation of tcount = 4.940 and ttable = 2.026 at a significant level and degrees of freedom = 35. Thus, there is a substantial influence on the use of guided inquiry learning models on student science learning results at SDI Wae Ratun.

The purpose of this study is to uncover the influence of supervision and distributive-relational leadership on the organizational commitment of principals. The method used in this study uses quantitative methods. The population in this study was the principal of Elementary School in Semarang District numbering 510. The sample in this study was determined based on a cluster sampling technique of 127 people. Data collected through a questionnaire that has been tested for validity and reliability. The data analysis technique uses path analysis with SPSS 21 software. The results of the study show that: (1) positive and significant supervision directly influences the principal's organizational commitment; (2) distributive-relational leadership positively and significantly directly influences the organizational commitment of the principal; and (3) supervision positively and significantly influences indirectly through distributive-relational leadership to the commitment of the principal's organization.

This study aims to improve the mathematical communication skills of fifth grade students in SD Negeri Kedundang through the application of cooperative learning models of Think Talk Write type. This type of research is classroom action research. The subjects in this study were 19 students. The technique used for data collection is observation and written test techniques. The research instrument is the teacher observation sheets, student observations and written tests. The data analysis technique used is descriptive quantitative and descriptive qualitative. The results of pre-action observation showed that students' communication skills were categorized as very low (47.63%) and low (38.48%). Then in the first cycle, students' mathematical communication skills on average increased from very low and low to low (22.60%), moderate (27.60), and high (22%). To strengthen the results of observations from the first cycle, the learning activities were held in the second cycle, the results of students' mathematical communication skills increased to the medium category (37.36%), high (39.47%), and very high (18.42%). Based on the results obtained it can be concluded that the application of the think talk write learning model can improve the mathematical communication skills of fifth grade students of Kedundang Elementary School.

Understanding concepts is one of the important things in learning Mathematics. However, in reality it was found that Grade 2 students had difficulty in understanding the concept of Mathematics. Therefore, in this study a strategy has chosen, namely Differentiated Instruction. The purpose of this study is to determine whether the application of Differentiated Instruction learning strategy can improve the understanding of the concept of class 2B students on Mathematics. The method carried out is the Classroom Action Research (CAR) by Robert Pelton with two cycles. The research was conducted at a Christian school in the West Jakarta area on September 26 to October 16, 2018, conducted with a total of 7 meetings. The instruments to collect data are lesson plans, mentor feedback, reflection journals, tests and documentation (photos). The results of the study shows that the Differentiated Instruction strategy can improve students' understanding of concepts on the three indicators used in this research. The maximum achievement of each indicator is restating a concept (72%), classifying objects based on certain characteristics according to the concept (100%), and presenting concepts in various forms of representation (80%). Differentiated Instruction can improve the understanding concept of, if each of the strategic steps are implemented properly. However, there are some things that need to be considered such as the emphasis on the concept of clear material, giving clear but simple instructions (for lower grade students), giving clear and firm rules, as well as variations in learning according to interests, learning styles, and student readiness.

This study examines whether the function f(x)=x2-9x-99 can be used as a key generator in cryptography. The quadratic function is regenerated using the fixed point iteration method into an iteration function. The distribution of digits to the output of iterative function to generate a number of chaos. Randomization testing uses run test and monobit testing. Followed by cryptographic testing to get the correlation between ciphertext and key which will be used as a decision whether the resulting key is random or not. Based on research that has been done iteration function xi = (xi-12-9xi-1-99)/9 can generate CSRPNG Chaos random numbers with the correlation level closest to the value of 0.

The research was conducted at Sriwijaya Sports State High School, a special school for students who have talent in the field of sports. The aim is to know the pattern of discipline and the form of disciplinary techniques applied in fostering student behavior. The method used is descriptive qualitative with a case study approach that explores important information about the pattern of application and the form of disciplinary techniques. The data analysis is done by processing and preparing data, reflecting on meaning, processing information, data coding, and making narrative writings. The results of the study show that disciplinary patterns are applied through two mechanisms: first is through supervision (panapticon). This form of supervision takes the form of a point system that has the power to oversee the behavior of students. Other forms of supervision are raids on behavior that violates school rules. Second is the normalization, which is done by applying and enforcing punishment and reward. Disciplinary techniques that are carried out including the use of democratic discipline, permissive discipline, and the application of punishment that is educational in value, but does not lead to a form of violence.

Permasalahan utama pada penelitian ini adalah kurangnya kemampuan berpikir tingkat tinggi siswa kelas VIII SMP Adhyaksa 2 Kupang. Tujuan penelitian untuk meningkatkan Kemampuan Berpikir Tingkat Tinggi siswa melalui penerapan model siklus belajar 5e. Metode penelitian ini merupakan penelitian tindakan kelas (PTK) menggunakan model  Kemmis dan Mc Taggart. Subjek dalam penelitian ini siswa/siswi kelas VIIIC berjumlah 23 orang. Teknik pengumpulan data yang digunakan yaitu tes untuk data kemampuan berpikir tingkat tinggi dan observasi untuk data aktivitas guru, teknik analisis data menggunakan analisis data kualitatif dan persentase secara individu dan klasikal. Hasil penelitian menunjukan bahwa kemampuan berpikir tingkat tinggi siswa dan observasi aktivitas guru mengalami peningkatan di setiap siklus dimana pada siklus I kemampuan berpikir tingkat tinggi siswa 62% dan mengalami peningkatan pada siklus II yaitu 87% sedangkan obsservasi aktivitas guru pada siklus I 59% dan pada siklus II mengalami peningkatan yaitu 85%. Adanya peningakatan terhadap kemampuan berpikir tingkat tinggi siswa dan aktivitas guru dalam proses pembelajaran setelah menerapkan model siklus belajar 5e, sehingga disimpulkan bahwa dengan penerapan siklus belajar 5e dapat meningkatkan kemampuan berpikir tingkat tinggi siswa.
 

The Intrusion Prevention System (IPS) Snort is a server security System that can prevent attacks by examining and recording all data packets as well as recognizing packets with sensors, when the attack has been identified, IPS Snort will deny the access (block) and log of all data packets identified. However by using only IPS Snort which can only check and note the Allert attacks that are incoming in less sense to secure a server by collaborating with the other server's secure system in the sense of being able to make the network security of the server better. Honeypot Artillery chosen which works when there is a Hacker trying to penetrate through open ports can be detected as if hackers can break through the system, then Honeypot Artillery will provide information about who attackers and how the attacker could enter the Snort IPS system for later record in the database that can be viewed on the Web interface, Allert recorded on the experiment that has been done in the database as much as 9453 on TCP protocol as much as 9%, UDP as much as < 1%, and ICMP As much as 91%.