It aims at existing defects of traditional VPN (Virtual Private Network) in constructing enterprise network, analyses problems which must be considered in designing secure enterprise network, puts forward solution of DMVPN (Dynamic Multipoint VPN) technique to solve the problems that traditional VPN has not solved by now. At the same time, it expatiates on the implementation mechanism of DMVPN, puts forward a concrete case that to adopts the DMVPN technique constructs secure enterprise network of some universities and business chain organization, and network performance indexes are tested. From the results of the test, the DMVPN network entirely satisfies the actual requirements that an enterprise uses a network. It offers a mode that is a convenient and economical investment to an enterprise for building a secure network.

Peatlands in the vast area of West Kalimantan can be utilized especially in Kubu Raya Regency is the Longan plantation. This study aims to determine soil fertility based on the physical and electrical properties of the soil. The parameters to be examined are specific gravity using ASTM method D-854-02 Pycnometer, EC value using conductivity meter, Cation Exchange Capacity (CEC) using Titrimetry/PU 3011 method, and C-Organic using Spectrophotometry method. Based on the results of the study it was found that the KL 1 sample had a specific gravity of 0.28 gcm-3, a CEC of 28.61 me 100g-1, and C-Organic of 42.14%. In the sample KL 2 has a specific gravity of 0.38 gcm-3, CEC of 15.79 me 100g-1, and C-Organic 14.16%. EC values have a range of 0.01 - 0.19 dSm-1. The results showed that the physical and electrical properties of the soil can be used to determine soil fertility.

Soil takes a big role as a source of excess CO2 gas emissions mainly peat soils that contain a lot of organic matter. One of the factors that influence is soil temperature. The research aims to analyze the temperature distribution at the surface of the soil to optimize the detection of CO2 gas sensors. The method using peat soil placed in the chamber, the heater was placed on it, and a number of thermometer-digitals are placed at several points on its surface in the x-y axis by distance from the heater is 5cm, 10cm, and 15cm. The temperature distribution at 5cm, the temperature alteration toward time is 0.0020oC/s, at 10cm is 0.0004oC/s, and at 15cm is 0.0001oC/s. Based on it, the optimal distance used in the design of 5cm and 10cm distance. This result can be used as supporting data for a portable CO2 concentration gauge for soil.

This research was pursued in a telescope motion control system that leads to right ascension and declination. This research will discuss and create a new system for telescopes that use the ATMega2560 microcontroller which is embedded in the Arduino Mega board as the brain of this system. The way this system works is first the ATmega2560 microcontroller will read the first position of the telescope after that the telescope will be moved by the hand box towards right ascension or declination and then the last position of the telescope will be read by the microcontroller. By using this latest system, the servo motor in the GOTO telescope can move with three-speed modes namely guide, set and slew where the speed of the guide requires a frequency of 1604 Hz, the speed of the set requires a frequency of 51.340 Hz and the slew speed requires a frequency of 501,368 KHz.

This research study how to convey student attendance to the parents and documentation process by schools about. The purpose of this research is to design and build a student attendance reporting application using WhatsApp gateway for parents to control their kids and can help users in the present process. The development model consists of stages: (1) Listen to the customer, (2) Build revise mock-up, (3) Customer test drive mock-up. Data collection techniques using TAM (Technology Acceptance Model). The results stated that the level of eligibility of student attendance reporting systems reviewed by aspect perceived usefulness is 86%, perceived ease of use is 90%, behavioural intention is 90%, actual use is 90%, attitude toward using is 90%, with an average rating is 89% and every aspect is in very good category. In conclusion, the student attendance reporting system can help user to make a presence process and worthy for use.

This study is sat out from reinforcement of scientific approach as 21st century learning. Therefore, learning management that recommended to use is Project based learning that using contextual problem as learning resource material. In line with this idea, the purpose of this study is to examine the competence of Grade VII students in solving contextual questions that consider one of the vehicles for building HOTS abilities. The subjects of this study were students of class VII Tp. 2019/2020 arrested 356 people. Research data were collected by tests then analyzed descriptively and inferentially. The results of data analysis showed that: (1) students who were taught with K13-based learning models had significantly better ability to solve problems compared to students who were taught conventionally; (2) the ability of students who are taught using K13-based learning models in solving contextual questions is better than students who are taught in the conventional way at each level.

University is a non-profit organization which consists of several unit organization. In Indonesia, the smallest unit organization of university is a study program that serves the citizens by specific education. The Indonesia government monitors all the study programs by some indicators that represent its performance. Dashboard is a system that holds all information so that the organization can use the information to monitor the organization's performance. The dashboard can be categorized based on a managerial level, one of them is a tactical dashboard. Therefore, in this study, a tactical dashboard was designed to present information on the program study at university.

The purpose of this study is to analyze the effect of learning hands-on activity media on the mathematical reasoning ability of junior high school students. The approach of this research is quantitative by using the quasi-experimental method. The research design is pretest-posttest with experimental and control class. The subjects of this study were seventth-grade students of the junior high schools in three schools in Bandung, totaling 278 people. The research data was obtained using a mathematical reasoning ability test. The results of study show that; the reasoning ability of students who get hands-on activity media learning is better than students who get conventional learning.

Blended Learning using Canvas became a familiar method in 2019 because of the easiest access and the centralized system management in university. This paper described the findings of the case study focusing on the engineering students’ participation and the creativity in the implementation of flipped classroom method emphasizing group discussion and students’ answer sheets. The findings were optimally reached from online group discussion, paper-based test, and online test using a qualitative approach. The findings were surprised because the engineering students through the flipped classroom were more active than in the classroom. There were more comment in group discussion and the answer from discussions’ topic were vary. The discussion was more interactive because every student have different questions that must be answered by other students. The engineering graduated students could answer fluently and vary. The students’ answer on the paper-based test and online test were varied and all the questions were answered correctly. It could be said that flipped classroom optimally implemented so that change the students’ participation and creativity significantly.

The aim of the research are making conceptual, functional model and implementing land suitability evaluation, creating database management system of land suitability evaluation, producing thematic map of land suitability evaluation for housing and residential based on GIS, satellite imagery and DTM. Research instruments are measurement and mapping tools, questionnaires, observations, computer hardware, and software. Primary data were taken by the physical, chemical and biological environment. Secondary data taken are maps of soil texture, soil drainage, soil type, erosion, slope, the effective depth of soil and flooding. Spatial analysis is used to superimpose layers, using GIS software. The thematic map which was producing land suitability evaluation for housing and residential based on GIS, satellite imagery, DTM from GIS software and satellite imagery from the internet could be more accurate and effective than conventional and analog methods.