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Recent expansion of oil palm agriculture has resulted in loss of forest habitat and forest-dependent species. However, large numbers of species-particularly insectscan persist within plantations. This study focuses on Odonata (dragonflies and damselflies): a charismatic indicator taxon and a potentially valuable pest control agent.We surveyed adult Odonata populations biannually over three years within an industrial oil palm plantation in Sumatra, Indonesia. We assessed the effects of rainfall (including an El Niño Southern Oscillation-associated drought), the role of roadside ditches, and the importance of understory vegetation on Odonata populations.To assess the impacts of vegetation, we took advantage of a long-term vegetation management experiment that is part of the Biodiversity and Ecosystem Function in Tropical Agriculture (BEFTA) Programme. We found 41 Odonata species, and communities varied between plantation core and roadside edge microhabitats, and between seasons. Abundance was significantly related to rainfall levels four months before surveys, probably indicating the importance of high water levels in roadside ditches for successful larval development. We found no significant effect of the BEFTA understory vegetation treatments on Odonata abundance, and only limited effects on community composition, suggesting that local understory vegetation structure plays a relatively unimportant role in determining communities. Our findings highlight that there are large numbers of Odonata species present within oil palm plantations and | 367 LUKE Et aL.

Background and Study Aim. Judo is a popular sport with dynamic characteristics and requires high physical abilities to achieve achievement. The purpose of this study was to analyze the effects of plyometric exercises with active-passive recovery for eight weeks to improve the physical ability of male judo athletes. Material and Methods. This study used an experimental method. A total of 36 male judoka participated as samples and were randomly divided into three groups. The plyometric experimental group with active recovery (21.8±1.78 years, 1.70±0.06 m, 71.1±13.5 kg), plyometric experimental group with passive recovery (21.7±2.53 years, 1.71±0.06 m, 63.8±10.1 kg), and the control group (21.4±2.30 years, 1.72±0.05 m, 67.4±7.76 kg). The training program was conducted for eight weeks with a frequency of 3 times/week. The experimental group was treated with plyometric training after warm-up, judo training, and post-exercise active-passive recovery intervention. The control group continued regular judo training. The statistical analysis procedure used the ANOVA test to determine the difference and comparison of the pre-test and post-test mean values in the control and experimental groups with a significance level (p<0.05). Results. The results showed differences in the average value of experimental and control groups found significant to the VO2Max endurance and leg power. Meanwhile, no significant difference occurred in left and right grip strength, flexibility, and speed. Conclusions. The study concluded that plyometric training with active-passive recovery positively affects male judoka's VO2max endurance and leg power.

In addition to good physical and psychological conditions, recovery is another important component that athletes must meet to support success in the field. This study aims to determine the effect of active and passive recovery on plyometric exercises on speed and power. The type used in this study is quasi-experimental. The sample of this research is 44 athletes from Lampung Province who will compete for Pekan Olahraga Nasional (PON) 2021 Papua. The plyometric exercises applied are plyometric exercises (multiple hops and jump variations). After doing the plyometric exercises, active and passive recovery is applied. The speed research instrument is the 30 m sprint test for power using a vertical jump. Analysis of the data used: paired test analysis and independent sample test. The results obtained are that plyometric exercises on active and passive recovery affect athletes' speed and power abilities. Although it affects performance, in the effectiveness test, the speed of active recovery is better than passive recovery. As for power, both of them do not have the level of effectiveness between passive and active recovery. The study's results are expected to be a reference to be included in the training program using the plyometric model with active and passive recovery to support the success of the Lampung Province athletes in 2021.

The ransomware can encrypt the files on the victim’s device and then offer a keyword to decrypt them with a ransom of money. Information about the basic structure of ransomware is needed so that an antivirus can detect its presence. To find out the structure of ransomware, static and/or dynamic analysis can be done. In this study, ransomware analysis was performed using static techniques. The choice of static techniques was based on the ease of doing the analysis and also it does not need to run the malware sample being analyzed. The result of the research shows that of the six ransomware samples analyzed, it is known that all of the samples used almost the same structure in the form of imphash, ssdeep, and library and there are even samples come from the same family of ransomware.

The purpose of this study was to determine student profiles and the percentage of student achievement motivation in a blended learning-based learning system in the industrial era 4.0. The sampling technique used was stratified random sampling with cluster sampling. Total sample: 120 participants (30 x 4 classes = 120). From the data analysis, it can be seen that achievement motivation data results include, 33% of students have very high motivation, 38% high motivation, 17% moderate motivation, 8% less motivation, and 4% very low motivation. Overall student motivation in digital-based learning systems is very good, it can be seen from the results of data analysis that has been carried out, learning systems that can provoke interest in learning are very influential on increasing motivation, and conversely high motivation will be able to form a personality that is ready in various situations. no exception to the adaptation of the learning system that continues to grow.

This study aims to analyze the effect of differences resulting from the combination of HIIT with recovery models in active and passive forms on the quality of VO2max and monitoring of heart-rate recovery. This study was designed using a quasi-experimental design, and 30 participants participated voluntarily in the study which was further divided into three groups: HIIT-PP experiment (n:10; Age: 21.0±0.82; Weight: 67.2±13.6; Height: 1.68±0.07), HIIT-PP experiment (n=10; Age: 21.1±1.20; Weight: 64.9±6.07; Height: 1.68±0.04), and control group (n=10; Age: 21.09±1.29; Weight: 69.3±5.46; Height 1.69±0.05). This research instrument uses Multistage Fitness Test (MFT) and Heart-Rate Monitoring. The procedure for analyzing the statistical research data used the Analysis of Variance (ANOVA) test with a p-value <0.05. The results showed that the parameter differences between the experimental and control groups significantly improved the quality of VO2max and monitoring of heart-rate recovery (HRM, and HRR 2min, 5min, 10min). This study can conclude that using HIIT with recovery models in passive forms for eight weeks resulted in a change in the quality of VO2max and monitoring of heart rate recovery.

Sports nutrition is a science that studies the relationship between the management of nutritional needs with performance that is beneficial for health, fitness, growth, and fostering sports achievement. The purpose of this PkM activity is to expand the knowledge and understanding of sports, increase competence and develop skills in compiling the need for good nutritional intake for sports through activities. The method used in this PkM activity uses a lecture approach, discussion, guided practice, and evaluation. Furthermore, this PkM activity provides valuable results and conclusions. It positively impacts various knowledge and understanding of the critical role of sports nutrition for the audience of athletes, sports coaches, and physical education teachers, as well as developing skills in formulating appropriate nutritional intake needs in sports activities.