Dynamic Behavior and Deposit Features of Debris Avalanche in Model Tests Using High Speed Photogrammetry

Model tests of debris avalanche can not only illuminate formation mechanisms but also represent deformation and motion processes. At present, the static terrain data of model tests are measured before and after experiments using terrestrial laser scanning. To study the motion and deformation of research objects, it is necessary to explore new techniques to obtain dynamic terrain data in the course of experimentation. In this paper, taking specified experimental tests of debris avalanche as an example, the method of 4D reconstruction using high-speed close-range photogrammetry is described in detail. The dynamic terrain data of model tests were obtained after the data were processed. Then, the dynamic behavior and deposit features of debris avalanche were analyzed in detail. Results show that dynamic terrain data of model tests can be obtained rapidly and accurately with this method. The propagation and deposit processes of the debris avalanche have evident stage characteristics, which can be divided into the starting, acceleration, constant, and deceleration stages. The granular size, slope angle, and barrier effect have a great influence on the travel distance and duration of the debris avalanche. The depth of the intermediate and leading area of the debris avalanche increased gradually and the depth of the trailing area first increased then decreased. We believe that this approach can also be applied to other domains involving the acquisition of dynamic terrain data and, thus, deserves to be applied widely.

ELAnatsui, Visual Arts and Intersection with Knowledge

“Natural synthesis” compartmentalized the black art world. This essay unravels how with folkloric gleeEL Anatsui, in a “selective critiquing and re-evaluation of self” dared to “wriggle out” of that quagmire. Thusly, reactivating the dynamic terrain that lives and is animated from within the soul of artists, he forged a new path of creativity. With reappraisals of the intellectual dynamics that forged the artistic substance of the post 1960s; empirical analysis and the engagement of storytelling mechanisms, this essay unreels that artistry. Anatsui, in spite of his accademisisation and art practice, threads a detour to cloth making craft traditions, particularly the Kente weave and its autography; for inspiration. Hence, the “vital and enabling” intellectual paradigm “resumptions, disappearances, and repetitions” makes possible an intersection with arcane knowledge, while the “uniting representation” of the synthesis in the appropriation of Memory and Interview grounds the contexts within which each artwork is experienced. EL’s “non-fixed forms” make visible the temerity of new shapes and forms forged directly from the wellsprings and fecundity of African roots as exemplars of the art of the new dawn (Ben Shahn, 1965:53).A deconstruction of EL’s artworks reveals the groundings of his discourses on assemblages of “Forgotten Biography” and the engagement of “mythopoeia imagination” (Marina Paolo Banchetti-Robino, 2011) in the recalibration of personal expression in language and imageries that inflect spiritual ties to ancestry and the reality of memory. This is sufficient basis for the historical narration of the intersection of visual arts and knowledge.

Navigasi Robot Mobile Pada Lingkungan Tak Pasti Dengan Pendekatan Behavior Based Control

Robots have been widely used to reach difficult environments or terrain such as disaster areas, wilderness and ruins of buildings. However, to reach these areas, there are many constraints on the limitations of robotic navigation because of the dynamic terrain. Therefore, a behavioral based control algorithm is needed that can make robots adapt flexibly to their environment.On the scheme of this behavior based control the robot moves based on its tasks. Each task is defined as robotic behavior. Each behavior take input from the sensor and send output to the effector. At each behavior there is a sensor as input for robot that work according to the stages in navigation to overcome uncertain obstacles. The results of the study show that robot can explore, avoid obstacles and reach the final destination.

Radical Gotham

New York City's identity as a cultural and artistic center, as a point of arrival for millions of immigrants sympathetic to anarchist ideas, and as a hub of capitalism made the city a unique and dynamic terrain for anarchist activity. For 150 years, Gotham's cosmopolitan setting created a unique interplay between anarchism's human actors and an urban space that invites constant reinvention. Tom Goyens gathers essays that demonstrate anarchism's endurance as a political and cultural ideology and movement in New York from the 1870s to 2011. The authors cover the gamut of anarchy's emergence in and connection to the city. Some offer important new insights on German, Yiddish, Italian, and Spanish-speaking anarchists. Others explore anarchism's influence on religion, politics, and the visual and performing arts. A concluding essay looks at Occupy Wall Street's roots in New York City's anarchist tradition. Contributors: Allan Antliff, Marcella Bencivenni, Caitlin Casey, Christopher J. Castañeda, Andrew Cornell, Heather Gautney, Tom Goyens, Anne Klejment, Alan W. Moore, Erin Wallace, and Kenyon Zimmer