1,484 research outputs found

    Remote Sensing of World War II Era Unexploded Bombs Using Object-Based Image Analysis and Multi-Temporal Datasets: A Case Study of the Fort Myers Bombing and Gunnery Range

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    During World War II, United States Army and Navy pilots trained on several hundred bombing ranges encompassing more than 12 million acres of land, leaving behind crater-scarred landscapes across the country. Post-war estimates suggest that 10-15% of aerial bombs used failed to detonate as intended, so these areas today are contaminated by a large number of dangerous unexploded bombs (UXB) which remain under the surface. Until recently, detecting UXB has been a tedious and expensive process done in three stages: (1) identifying and mapping general areas of concentrated bomb craters using historical air photos and records; (2) intensely searching these areas at a larger scale for much smaller UXB entry holes; and (3) confirming the presence of individual UXB using magnetometry or ground-penetrating radar. This research aims to streamline the workflow for stage 1 and 2 using semi-automated object-based image analysis (OBIA) methods with multi-source high spatial-resolution imagery. Using the Fort Myers Bombing and Gunnery Range in Florida as a study area, this thesis determines what OBIA software and Imagery is best at locating UXB in this environment. I assess the use of LiDAR-derived DEMs, historical air photos and high-resolution color digital orthophotos in Feature Analyst and Imagine Objective, and discuss optimal inputs and configurations for UXB searches in karst wetlands. This methodology might be applied by the detection and clearance industry in former war zones, and aid in restoring former training ranges to safe land uses in the U.S

    Digital Image Access & Retrieval

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    The 33th Annual Clinic on Library Applications of Data Processing, held at the University of Illinois at Urbana-Champaign in March of 1996, addressed the theme of "Digital Image Access & Retrieval." The papers from this conference cover a wide range of topics concerning digital imaging technology for visual resource collections. Papers covered three general areas: (1) systems, planning, and implementation; (2) automatic and semi-automatic indexing; and (3) preservation with the bulk of the conference focusing on indexing and retrieval.published or submitted for publicatio

    Technology for Good: Innovative Use of Technology by Charities

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    Technology for Good identifies ten technologies being used by charitable organizations in innovative ways. The report briefly introduces each technology and provides examples of how those technologies are being used.Examples are drawn from a broad spectrum of organizations working on widely varied issues around the globe. This makes Technology for Good a unique repository of inspiration for the public and private sectors, funders, and other change makers who support the creation and use of technology for social good

    Brief history of UAV development

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    In this article, the authors present the technical development of the drones from the beginning to the present. The reader will get to know the most important periods and events of the drone's military application. At the end of the article, the authors summarize the four main purposes of military use of drones

    Resurrecting Eden: inaugural British narration and policy of Iraq

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    This thesis examines Britain\u27s use of technology in developing Mesopotamia. British imaginations of Mesopotamia as Eden or El Dorado, reified by a multiplicity of travel literature,archaeological digs, and geographic societies, formed the first half of a violent dialectic that granted divine right and responsibility to the British. Instead, colonialists claimed that Mesopotamia\u27s inhabitants squandered its primordial potential through neglect and mismanagement. These justifications fueled British attempts to develop Mesopotamia, irrigation engineers designing floodgates for the Tigris and Euphrates while agriculturalists created new strains of wheat that would flourish in its climate. But technology was more than development. It formed the foundation of a polemic leading to prolonged aerial bombardment and discipline; if modernism could resurrect the Garden, airplanes would tend and cultivate it. Therefore, the value of aircraft was not restricted to its ability for disciplining a population. Planes were physical manifestations of the British colonial project, flying articulations of the modern that sanctioned violence against the primitive . They were the latest mechanisms to embody the narrative of English supremacy and the latest conversation topics in British high society

    Privileged Killers, Privileged Deaths: German Culture and Aviation in the First World War: 1909-1925

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    This dissertation examines aviation’s influence on German cultural and social history between 1908 and 1925. Before the First World War, aviation embodied one of many new features of a rapidly modernizing Germany. In response, Germans viewed flight as either a potentially transformative tool or a possible weapon of war. The outbreak of war in 1914 moved aviation away from its promised potential to its lived reality. In doing so, the airplane became a machine which compressed time and space, reordered the spatial arrangement of the battlefield, and transformed the human relationship with killing. Germany’s fliers initially served as observers, noting troop positions in the war’s opening weeks. As the Western Front transformed into static trench warfare, flight, in concert with photography, became a method of gathering intelligence. The camera also shaped the identity and iconography of the aviator both in public and in private photographs. Aviation created a privileged space for combat pilots to engage with, or ignore, the consequences of killing as aerial violence became commonplace. Killing, death, and superstition in the air were repackaged with older cultural tropes to render new violence knowable. The German general staff too, became increasingly obsessed with killing in the air, and this fascination fed a new system for understanding the air war. Germany’s regional divisions were also reflected in aviation and directly influenced both the composition of its air service and the machines issued to its pilots. Aviators were again privileged in their use of cultural markers to signpost individual, local, and national identities. The end of the war, however, shattered previous perceptions of war time, and left living aviators to struggle to make sense of a new present, while the nation’s lost fliers were repurposed for contradictory social and political ends

    The Mexican punitive expedition and the United States Army Aviation Section

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    The United States Army Signal Corps Aviation Section was a weak air service devoted primarily to experimental testing prior to World War I. In March 1916, President Woodrow Wilson ordered a punitive expedition into Mexico to capture the Mexican nationalist, Francisco (Panco) Villa. One of the organizations assigned to the expedition was the Frist Aero Squadron: The Signal Corps\u27 only operational unit. This study examines the Mexican punitive expedition, preparedness for World War I, and the development of United States air power. It concludes that the Mexican punitive expedition was a critical point in the history of the United States Air Force

    Militarized visualities

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    Disaster Site Structure Analysis: Examining Effective Remote Sensing Techniques in Blue Tarpaulin Inspection

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    This thesis aimed to evaluate three methods of analyzing blue roofing tarpaulin (tarp) placed on homes in post natural disaster zones with remote sensing techniques by assessing the different methods- image segmentation, machine learning (ML), and supervised classification. One can determine which is the most efficient and accurate way of detecting blue tarps. The concept here was that using the most efficient and accurate way to locate blue tarps can aid federal, state, and local emergency management (EM) operations and homeowners. In the wake of a natural disaster such as a tornado, hurricane, thunderstorm, or similar weather events, roofs are the most likely to be damaged (Esri Events., 2019). Severe roof damage needs to be mitigated as fast as possible: which in the United States is often done at no cost by the Federal Emergency Management Agency (FEMA). This research aimed to find the most efficient and accurate way of detecting blue tarps with three different remote sensing practices. The first method, image segmentation, separates parts of a whole image into smaller areas or categories that correspond to distinct items or parts of objects. Each pixel in a remotely sensed image is then classified into categories set by the user. A successful segmentation will result when pixels in the same category have comparable multivariate, grayscale values and form a linked area, whereas nearby pixels in other categories have distinct values. Machine Learning, ML, a second method, is a technique that processes data depending on many layers for feature v identification and pattern recognition. ArcGIS Pro mapping software processes data with ML classification methods to classify remote sensing imagery. Deep learning models may be used to recognize objects, classify images, and in this example, classify pixels. The resultant model definition file or deep learning software package is used to run the inference geoprocessing tools to extract particular item positions, categorize or label the objects, or classify the pixels in the picture. Finally, supervised classification is based on a system in which a user picks sample pixel in an image that are indicative of certain classes and then tells image-processing software to categorize the other pixels in the picture using these training sites as references. To group pixels together, the user also specifies the limits for how similar they must be. The number of classifications into which the image is categorized is likewise determined by the user. The importance of tracking blue roofs is multifaceted. Structures with roof damage from natural disasters face many immediate dangers, such as further water and wind damage. These communities are at a critical moment as responding to the damage efficiently and effectively should occur in the immediate aftermath of a disaster. In part due to strategies such as FEMA and the United States Army Corps of Engineers’ (USACE) Operation Blue Roof, most often blue tarpaulins are installed on structures to prevent further damage caused by wind and rain. From a Unmanned Arial Vehicles (UAV) perspective, these blue tarps stand out amid the downed trees, devastated infrastructure, and other debris that will populate the area. Understanding that recovery can be one of the most important stages of Emergency Management, testing techniques vi for speed, accuracy, and effectiveness will assist in creating more effective Emergency Management (EM) specialists
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