Now showing items 2468-2487 of 2985

    • S.E.L.E.N.E: System Engineered for Lunar Environment, Navigation, and Exploration 

      Morales, Kevin; Wang, Long; Christensen, Fennie; Kim, Arnold; Alfaro, Jennifer; Smith, Brandon; Ergil, Selin; Rincon, Clarissa (Wichita State University, 2021-04-02)
      Augmented Reality (AR) display technologies utilize computer-generated virtualized content to enhance the observer's perception of the physical environment. This NASA SUITS (Spacesuit User Interface Technologies for Students) ...
    • SafeExit4All: An inclusive indoor emergency evacuation system for people with disabilities 

      Unknown author (Association for Computing Machinery, Inc., 2019-05-13)
      Indoor wayfinding has remained a challenge for people with disabilities in unfamiliar environments. With some accessible indoor wayfinding systems coming to the fore recently, a major application of interest is that of ...
    • Safety concerns in composite manufacturing and machining 

      Asmatulu, Eylem; Alonayni, Abdullah; Alamir, Mohammed Abdullah (SPIE, 2018-03-22)
      Because of the superior properties, composites have been used in many industrial applications, including aerospace, wind turbines, ships, cars, fishing rods, storage tanks, swimming pool panels, and baseball bats. Each ...
    • Safety critical networks using commodity SDNs 

      Kashinath, Ashish; Hasan, Monowar; Kumar, Rakesh; Mohan, Sibin; Bobba, Rakesh B.; Padhy, Smruti (IEEE, 2021-05-05)
      Safety-critical networks often have stringent real-time requirements; they must also be resilient to failures. In this paper, we propose the RealFlow framework that uses commodity software-defined networks (SDNs) to realize ...
    • Sagittal plane moment arms of the female lumbar region rectus abdominis in an upright neutral torso posture 

      Jorgensen, Michael J.; Marras, William S.; Smith, Francis W.; Pope, Malcolm H. (Pergamon, 2005-03)
      Prior imaging studies of torso muscle moment arms for use as inputs into biomechanical models have been derived from subjects lying supine. Recent research suggests moment arms of the rectus abdominis are larger when ...
    • Salt hydrates as phase change materials for photovoltaics thermal management 

      Choo, Yee M.; Wei, Wei (Wiley Open Access, 2021-11-10)
      Recently, phase change materials (PCMs) are acquiring much attention for the overall enhancement of photovoltaic (PV) systems' performance, because of their extraordinary property in temperature management. Many researchers ...
    • Satellite digital beamforming with digital channelizer and it's performance under predistorted high power amplifier 

      Goswami, Madhuprana (Wichita State University, 2019-12)
      This dissertation proposes for the rst time a simple combination of a digital channelizer and a digital predistorter (PD) to generate an output signal without intermodulation (IM) products even under a nonlinear memoryless ...
    • Satellite digital channelizer with predistorted high-power amplifier 

      Goswami, Madhuprana; Rana, Vidhi; Kwon, Hyuck M.; Pham, Khanh D.; Lyke, James (IEEE, 2020-03-05)
      A geostationary earth orbit satellite requires high transmitting power (e.g., 20 dBW=100 watts) because the waveform traveling distance can be more than 36,000 km. Thus, it is necessary to operate close to the saturation ...
    • Satellite jamming: a game theoretic analysis 

      Wang, Qiwei; Nguyen, Thinh; Pham, Khanh D.; Kwon, Hyuck M. (IEEE, 2017)
      In this paper, the problem of minimizing the damaging effect on the frequency hopping (FH) spread-spectrum satellite is formulated using the two-player asymmetric zero-sum game framework. The payoff is modeled as the channel ...
    • Satellite MIMO digital beam-forming under nonlinear high-power amplifier and keyhole 

      Goswami, Madhuprana; Kwon, Hyuck M.; Pham, Khanh D.; Lyke, James (IEEE, 2019-04-11)
      In a satellite communication (Sat-Com) system, channel coefficients from multiple-input, multiple-output (MIMO) antennas are correlated strongly because of a long propagation distance and a narrow angle spread. This is ...
    • SCADA security device: design and implementation 

      Rodrigues, Aniket (Wichita State University, 2011-12)
      Securing SCADA systems is a critical aspect of Smart grid security. As sophisticated attacks continue to target industrial systems, the focus should be on planning and developing new security techniques that will adapt to ...
    • Scalable meter data collection in smart grids through message concatenation 

      Karimi, Babak; Namboodiri, Vinod; Jadliwala, Murtuza Shabbir (IEEE, 2015-07)
      Advanced metering infrastructure (AMI) initiatives are a popular tool to incorporate changes for modernizing the electricity grid, reduce peak loads, and meet energy efficiency targets. There is the looming issue of how ...
    • Scalable QoS provisioning for mobile networks using wireless sensors 

      Bahety, V.; Pendse, Ravi (IEEE, 2004-03-21)
      In the past few years support for mobility has increased to a large extent. Mobile IP enables nodes to move from one network to the other while maintaining the same IP address. Minimal packet loss during handoff is a ...
    • Scaling laws for free piston engines: benefits and challenges of miniaturization 

      Ijaola, Ahmed O. (Wichita State University, 2019-04-26)
      Small scale internal combustion engines (less than 10 centimeter in linear dimension) are being designed for powering next generation miniature robots, micro unmanned aerial vehicles (UAVs), and exoskeleton systems. This ...
    • Scaling studies on the tensile strain rate sensitivity of laminated composites 

      Siddiqui, Md. Tareq (Wichita State University, 2011-12)
      The stress-strain behavior and failure of composite materials are strain rate sensitive, and influenced by the dimensions of the structure. To elucidate the combined effects of scaling and strain rate on the strength of ...
    • Scheduling Continuous Aluminium Casting Lines 

      Duman, Ekrem; Yildirim, Mehmet Bayram; Alkaya, Ali Fuat (Taylor & Francis, 2008-10-15)
      This study considers the problem of scheduling casting lines of an aluminium casting and processing plant. In aluminium processing plants, continuous casting lines are the bottleneck resources, i.e. factory throughput ...
    • Scheduling of multi-spindle CNC gantry mills 

      Cheraghi, S. Hossein; Waram, Vish (Springer New York LLC, 2002-01-8)
      This paper considers the problem of scheduling a multi-spindle CNC gantry mill. Multiple spindle gantry mills are characterized by their ability to process multiple numbers of parts simultaneously and that they allow a ...
    • Scheduling traffic lights in a capacitated junction 

      Ksen, Deniz A.; Aksu, Murat; Altinel, I. Kuban; Yildirim, Mehmet Bayram (Turkish Chamber of Mechanical Engineers, 1994-12)
    • Scope for energy improvement for hospital imaging services in the USA 

      Esmaeili, Mohammad Amin; Twomey, Janet M.; Overcash, Michael; Soltani, Seyed A.; McGuire, Charles W.; Ali, Kamran (SAGE Publications, 2015-04)
      Objective To aid radiologists by measuring the carbon footprint of CT scans by quantifying in-hospital and out-of-hospital energy use and to assess public health impacts. Method The study followed a standard life cycle ...
    • Secret sharing from correlated Gaussian random variables and public communication 

      Rana, Vidhi; Chou, Rémi; Kwon, Hyuck M. (IEEE, 2021-04-11)
      We study a secret sharing problem, where a dealer distributes shares of a secret among a set of participants under the constraints that (i) authorized sets of users can recover the secret by pooling their shares, (ii) ...