Ability Of Video Research Articles

UAV Video-Based Approach to Identify Damaged Trees in Windthrow Areas

Disturbances in forest ecosystems are expected to increase by the end of the twenty-first century. An understanding of these disturbed areas is critical to defining management measures to improve forest resilience. While some studies emphasize the importance of quick salvage logging, others emphasize the importance of the deadwood for biodiversity. Unmanned aerial vehicle (UAV) remote sensing is playing an important role to acquire information in these areas through the structure-from-motion (SfM) photogrammetry process. However, the technique faces challenges due to the fundamental principle of SfM photogrammetry as a passive optical method. In this study, we investigated a UAV video-based technology called full motion video (FMV) to identify fallen and snapped trees in a windthrow area. We compared the performance of FMV and an orthomosaic, created by the SfM photogrammetry process, to manually identify fallen and snapped trees, using a ground survey as a reference. The results showed that FMV was able to identify both types of damaged trees due to the ability of video to deliver better context awareness compared to the orthomosaic, although providing lower position accuracy. In addition to its processing being simpler, FMV technology showed great potential to support the interpretation of conventional UAV remote sensing analysis and ground surveys, providing forest managers with fast and reliable information about damaged trees in windthrow areas.

Development of Online Learning Videos: An Innovation for Higher Education Students in Electromagnetic Experiment Course During a Pandemic COVID 19

The ongoing COVID-19 pandemic has led to government decisions regarding the continuation of online lectures. This transformation becomes a problem in the ongoing compulsory course for students, namely electromagnetic experiment. Until finally the researchers chose video media as the answer to these problems. In the process, video development was carried out in two cycles. Through this development, the researcher wanted to know the ability of video in presenting data and its feasibility. The subjects of this study were students of S1 Physics Education, Universitas Negeri Malang in batch 2019 with a total of 100 people. This video was developed using the Four-D method which consists of defining, designing, and developing stages. The first cycle video acts as the preceding video and the second cycle video acts as the development result video. Practical reports and student assessment questionnaires are used as a review of development results. As a result, students obtained an average experiment report score of 93 in the first cycle and 96 in the second cycle. Student assessments related to the first cycle of media showed that 70.57% stated that they were feasible and became 79.86% in the second cycle.

Research on Video on Demand Based on P2P Network

A P2P approaches to extend the ability of Video on Demand systems to serve more users. In the proposed system users share with each other the media data obtained and the media server is no longer the only source to get data from, thereby, the load on the media server could be greatly alleviated and the overall system capacity increases and more users could be served. The P2P streaming system introduces efficient searching; data transfer dynamically monitoring and initial buffering to maintain a high quality of playback. Its provider selection policy helps to reduce the load of the underlying network by avoiding remote data transfer.

Video- and computer-enhanced light microscopy of three-dimensional colloidal structures

The ability of video- and computer-enhanced microscopy to directly visualize colloidal structures in real time has allowed colloid scientists to discover and characterize many new structures and processes. Low contrast surfactant microstructures are particularly amenable to this technique. Recent applications include the discovery and characterization of vesicles in mixtures of cationic and anionic surfactants, the mapping of the phase behavior of superwetting trisiloxane surfactants, the observation of the effects of counter-ion exchange on the dynamics of vesicle structure, and the characterization of the stability of novel reverse vesicles. The coupling of a video microscope and a digital image processor enables the three-dimensional tracking of colloidal particles. As a result, hydrodynamic radii, particle densities, mobilities, and pair potentials are readily accessible. Image processing techniques also allow us to use colloidal dispersions as simulators of molecular nucleation and growth processes.

Comparative Characteristic Analyses of On-Campus Resident and Off-Campus Video-Based Engineering Graduate Students and Their Implications

With research now fully supporting the ability of video to disseminate off-campus graduate engineering education, it is useful to review other factors impacting on program quality. One key issue is the quality of off-campus students, particularly in comparison to their on-campus peers. The following compares on-and off-campus engineering graduate students for traditionally accepted quantitative characteristics. These include: chronological age, age of undergraduate degree, scores on the GRE Verbal, Quantitative, and Analytic test, and undergraudate quality point average.