Now showing items 636-655 of 1516

    • Lajos Takács and his work 

      Dshalalow, Jewgeni H.; Syski, Ryszard (1994-10-01)
      This paper, written in honor of the 70th birthday of Lajos Takács, addresses his life and work, and includes some personal observations and appreciation of his contributions. In particular, it includes a short biography, ...
    • Language Relations on Twitter: A Network Science Approach 

      Saha, Priya (2017-04)
      Online social networks (e.g., Twitter and Facebook) play a vital role in the spreading of information in today’s world. Interestingly, the spread of information is enabled by the existence of an underlying connectivity ...
    • Late Holocene Climate and Vegetation Change in Central Michigan 

      Sales, Rachel K (2017-05)
      Understanding the effects of drought and temperature change on eastern North America will be key in the context of future climate change. Perhaps the best method to understand how drought and temperature will impact this ...
    • Layered unequal loss protection for image transmission over packet loss channels with delay constraints 

      Cai, Jianfei; Li, Xiangjun; Chen, Chang Wen (2004-10-25)
      In the case of high bit rate image transmission or having lots of packets, the FEC (forward error correction) encoding and decoding processes in the ULP (unequal loss protection) based schemes should be applied to individual ...
    • Layered unequal loss protection for progressive image transmission over packet loss channels 

      Cai, Jianfei; Li, Xiangjun; Chen, Chang Wen (2004-01-18)
      In the past, many schemes have been proposed for progressive image transmission using unequal error protection (UEP) or unequal loss protection (ULP). However, most existing UEP/ULP schemes do not consider the minimum image ...
    • Leader Emotion Management Behavior and Perceived Leader Effectiveness: The Moderating Roles of Gender and Culture 

      Fischer, Julianna (2016-12)
      A key aspect of successful management includes a leader’s responsibility to manage employees’ emotions (Leavitt & Bahrami, 1988). This form of management can be reflected in a number of behaviors, such as demonstrating ...
    • Learning implicit user interest hierarchy for context in personalization 

      Kim, Hyoung-Rae; Chan, Philip K. (2002-10-05)
      To provide a more robust context for personalization, we desire to extract a continuum of general (long-term) to specific (short-term) interests of a user. Our proposed approach is to learn a user interest hierarchy (UIH) ...
    • Learning implicit user interest hierarchy for web personalization 

      Kim, Hyoung-Rae (2005-04-19)
      Most web search engines are designed to serve all users in a general way, without considering the interests of individual users. In contrast, personalized web search engines incorporate an individual user's interests when ...
    • Learning models of network traffic for detecting novel attacks 

      Mahoney, Matthew V.; Chan, Philip K. (2002-05-24)
      Network intrusion detection systems often rely on matching patterns that are gleaned from known attacks. While this method is reliable and rarely produces false alarms, it has the obvious disadvantage that it cannot detect ...
    • Learning nonstationary models of normal network traffic for detecting novel attacks 

      Mahoney, Matthew V.; Chan, Philip K. (2002-04-29)
      Traditional intrusion detection systems (IDS) detect attacks by comparing current behavior to signatures of known attacks. One main drawback is the inability of detecting new attacks which do not have known signatures. In ...
    • Learning rules for anomaly detection of hostile network traffic 

      Mahoney, Matthew V.; Chan, Philip K. (2003-06-10)
      We introduce an algorithm called LERAD that learns rules for finding rare events in nominal time-series data with long range dependencies. We use LERAD to find anomalies in network packets and TCP sessions to detect novel ...
    • Learning rules for time series anomaly detection 

      Mahoney, Matthew V.; Chan, Philip K. (2005-02-17)
      We describe a multi-dimensional time series anomaly detection method in which each point in a test series is required to match the value, slope, and curvature of a point seen in training (with an optional sequential ...
    • Learning rules from system call arguments and sequences for anomaly detection 

      Tandon, Gaurav; Chan, Philip K. (2003-06-11)
      Many approaches have been suggested and various systems have been modeled to detect intrusions from anomalous behavior of systems calls as a result of an attack. Though these techniques have been shown to be quite effective, ...
    • Learning states and rules for time series anomaly detection 

      Salvador, Stan; Chan, Philip K.; Brodie, John (2003-03-09)
      In this paper, we investigate machine learning techniques for discovering knowledge that can be used to monitor the operation of devices or systems. Specifically, we study methods for generating models that can detect ...
    • Learning states for detecting anomalies in time series 

      Salvador, Stan Weidner (2004-04-24)
      The normal operation of a device can be characterized in different operational states. To identify these states, we introduce a segmentation algorithm called Gecko that can determine a reasonable number of segments using ...
    • Light Exoskeleton Gear (L.E.G.) 

      Myers, Andy; Al Matouq, Ali; DeJesus-Banos, Kelsey; Vidmark, Jessica
      The L.E.G. combines the inherent mechanical support of a knee brace with extra assistance provided in a similar way as a robotic leg. Surface Electromyography (SEMG) sensors are connected to the user’s leg to assess ...
    • The lightning-TGF relationship on microsecond timescales 

      Cummer, Steven A.; Lu, Gaopeng; Briggs, Michael S.; Connaughton, Valerie; Xiong, Shaolin; Fisherman, Gerald Jerry; Dwyer, Joseph R. (2011-07-28)
      We analyze the count rates of two terrestrial gamma-ray flashes (TGFs) detected by the Fermi Gamma-ray Burst Monitor (GBM) with the broadband magnetic fields (1 to 300 kHz) produced by the simultaneous lightning processes. ...
    • Limits on spacetime foam 

      Christiansen, Wayne A.; Ng, Yeejack; Floyd, David J. E.; Perlman, Eric S. (2011-04-04)
      Plausibly spacetime is foamy on small distance scales, due to quantum fluctuations. We elaborate on the proposal to detect spacetime foam by looking for seeing disks in the images of distant quasars and active galactic ...
    • Linear Inductive Position Sensor 

      Clark, Brittany; Vreeland, Erin
      The aim of this project is to create a linear position sensor with an accuracy of 1 μm. Two 'driving' inductors are powered by a frequency generator with a magnitude of 4.5 V and a frequency of 1.5 kHz. The inductors create ...
    • Lionsat 

      Guenther, Alec; Maldonado, Derek; Throne, James; Truszkowski, Adam
      In the previous semesters, a mission was designed for a cubesatellite to enter a low-earth orbit and take pictures of weather patterns. To overcome drag and provide essential correction maneuvers, a resistojet would be ...