An analysis of enhanced traffic management system data using three dimensional MATLAB visualizations

Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.Includes bibliographical references (leaf 28).In this thesis I use MATLAB visualizations to analyze right patterns over major airports. I will analyze capacity constraints on some of the nation's most congested airports, and define flight paths that converge on them using these MATLAB visualizations. I will also analyze the air traffic patterns over a specific number of sites around the United States where a change in plane surveillance technology is scheduled to occur.by Evan Tindell.S.B

Toward a More Reliable Fact-Finder In Patent Litigation

Juries have been perceived as a blessing and a curse. They are perceived differently in different areas of law. For example, practitioners in patent law view juries in a negative light as the fact finders. In accordance with this view, Federal Courts of Appeals have begun to narrow the role of juries in patent trials. This paper follows the development of the Seventh Amendment in the patent context and its current status. This paper then proposes a system similar to peer-review to replace the traditional jury in patent trials

A multi-input deep learning model for C/C++ source code attribution

Code stylometry is applying analysis techniques to a collection of source code or binaries to determine variations in style. The variations extracted are often used to identify the author of the text or to differentiate one piece from another. In this research, we were able to create a multi-input deep learning model that could accurately categorize and group code from multiple projects. The deep learning model took as input word-based tokenization for code comments, character-based tokenization for the source code text, and the metadata features described by A. Caliskan-Islam et al. Using these three inputs, we were able to achieve 90% validation accuracy with a loss value of 0.1203 using 12 projects consisting of 5,877 files. Finally, we analyzed the Bitcoin source code using our data model showing a high probability match to the OpenSSL project

A comparison of biological indices and water quality for different land uses

Five subwatersheds in the Sweetwater Valley of Tennessee were sampled from October 1997 to March 1999 comparing biological and chemical methodologies for each of the different land uses. The five subwatersheds were; (1) wooded, (2) urban, (3) mixed, (4) agricultural, and (5) rural. In each subwatershed fish sampling was conducted in the spring of 1998 along with macroinvertebrate sampling in the fell of 1997, spring 1998, and fall 1998. Also, water quality parameters such as fecal conforms, chloride, nitrate, sulfate, ammonia, biological oxygen demand (BOD), and total suspended solids (TSS) were sampled weekly from April 17,1997 to September 30, 1998. Other water quality parameters such as dissolved oxygen (DO), pH, electrical conductivity, and water temperature were analyzed at high and low flows in all subwatershed stream reaches. The Index of Biotic Integrity (IBI) in the spring of 1998 revealed values for each subwatershed that ranged from 20 (very poor) in the wooded stream reach, 22 (very poor) for the urban stream reach, 32 (poor) for both mixed and rural stream reaches, and 38 (poor/fair) in the agricultural stream reach. Ephemeroptera, Plecoptera, and Trichoptera (EPT) values also ranged from poor to fair. The rural stream reach was rated as fair and the other four stream reaches were rated as poor by EPT sampling. All water quality constituents were within EPA water quality standards, except fecal conforms. The in situ water quality parameters were within the State of Tennessee standards for aquatic life. Results from biotic indices and water quality constituents did not agree among the five subwatersheds since water quality standards were within EPA standards, except fecal coliforms, and the biotic indices were poor to poor/fair for stream health. This suggested that physical parameters were influencing the aquatic habitat. From the habitat analyses all of the subwatersheds were rated poor for homogenous substrate, channelization, and lack of vegetated riparian zones. It appeared that as development and human population increased, physical conditions and stream health were degraded. IBI scores generally improved with decreased development and population densities. The subwatershed with the least amount of anthropogenic activities was the agricultural subwatershed which scored the highest IBI (38), the lowest fecal coliform counts, and the best physical parameters. It was felt that the wider vegetated riparian zones in the agricultural steam reach reduced sediment entering the stream therefore providing better habitat than in the other subwatershed stream reaches

Chromatic polynomials and network reliability

AbstractIn this paper, we introduce and study an extension of the chromatic polynomial of a graph. The new polynomial, determined by a graph G and a subset K of points of G, coincides with the classical chromatic polynomial when K is the set of all points of G. The main theorems in the present paper include analogues of the standard axiomatic characterization and Whitney's topological characterizations of the chromatic polynomial, and the theorem of Stanley relating the chromatic polynomial to the number of acylic of G. The work in this paper was stimulated by important connections between the chromatic polynomial and the all-terminal network reliability problem, and by recent work of Boesch, Satyanarayana, and Suffel on a graph invariant related to the K-terminal reliability problem. Several of the Boesch, Satyanarayana, and Suffel are derived as corollaries to the main theorems of the present paper