Open Access Journals: Recent submissions

Now showing items 581-600 of 831

    • Sigma-Point Filters in Robotic Applications 

      Al-Shabi, Mohammad (Scientific Research Publishing, 2015-08)
      Sigma-Point Kalman Filters (SPKFs) are popular estimation techniques for high nonlinear system applications. The benefits of using SPKFs include (but not limited to) the following: the easiness of linearizing the nonlinear ...

    • Throughput Maximizing Frequency and Power Scheduling for Wireless Ad-Hoc Networks in the Low-SINR Regime 

      Saberi, Nahid (Scientific Research Publishing, 2012-07)
      We study the problem of frequency and power allocation and scheduling at a time-slotted cognitive ad-hoc wireless network, where cognitive nodes share a number of frequency bands and frequency reuse is allowed. In such a ...

    • Wireless Hybrid QoS Architecture with an Enhancement of Fair Intelligent Congestion Control 

      Zheng, Li; Hoang, Doan B.; Li, Ming (Scientific Research Publishing, 2012-07)
      More subtle and explicit QoS control mechanisms are required at the radio access level, even though the simple and scalable Differentiated Services (DiffServ) QoS control model is acceptable for the core of the network. ...

    • Energy-Efficient and Coverage-Aware Clustering in Wireless Sensor Networks 

      Awad, Fahed; Taqieddin, Eyad; Seyam, Asmaa (Scientific Research Publishing, 2012-07)
      Energy efficiency and sensing coverage are essential metrics for enhancing the lifetime and the utilization of wireless sensor networks. Many protocols have been developed to address these issues, among which, clustering ...

    • A Wideband Circularly Polarized Patch Antenna for 60 GHz Wireless Communications 

      Zhou, Rongguo; Liu, Duixian; Xin, Hao (Scientific Research Publishing, 2012-07)
      This paper presents the design of a fully packaged 60 GHz wideband patch antenna incorporating an air cavity and a fused silica superstrate. Circular polarization (CP) is realized by introducing a diagonal slot at the ...

    • Design of Low Power and High Speed CMOS Comparator for A/D Converter Application 

      Yewale, Shubhara; Gamad, Radheshyam (Scientific Research Publishing, 2012-04)
      This paper presents an improved method for design of CMOS comparator based on a preamplifier-latch circuit driven by a clock. Design is intended to be implemented in Sigma-delta Analog-to-Digital Converter (ADC). The main ...

    • Interference Mitigation MAC Protocol for Cognitive Radio Networks 

      Faruk, Nasir; Ali, Maaruf; Gumel, Mohammed I. (Scientific Research Publishing, 2012-04)
      The growing demand for wireless services coupled with the limited availability of suitable electromagnetic spectrum is increasing the need for more efficient RF spectrum utilization. Spectrum allocated to TV operators can ...

    • Software Defined Radio Prototyping with Visual C++ Express and Code Composer Studio 

      Wichlund, Sverre (Scientific Research Publishing, 2012-04)
      The primary goal of this project was educational: to demonstrate Software Defined Radio based prototyping using Visual C++ Express and Code Composer Studio. More specifically an IEEE802.11a Phy [1] compliant baseband ...

    • Jail Incarceration and Birth Outcomes 

      Bell, Janice F.; Zimmerman, Frederick J.; Cawthon, Mary L.; Huebner, Colleen E.; Ward, Deborah H.; Schroeder, Carole A. (2004)
      This study examined the relationships between jail incarceration during pregnancy and infant birth weight, preterm birth, and fetal growth restriction. We used multivariate regression analyses to compare outcomes for 496 ...

    • Determination of Accuracy of Nursing Diagnoses Used by Nursing Students in their Nursing Care Plans 

      Aydin, Nursel; Akansel, Neriman (2013)
      Aim: The aim of this study was to determine and evaluate appropriateness of nursing diagnoses with NANDA taxonomy used by second year nursing students in their nursing care plans. Methods: Retrospective design. Findings: ...

    • Nurse Staffing and Workload Drivers in Small Rural Hospitals: An Imperative for Evidence 

      Twigg, Diane E.; Cramer, Jennifer H.; Pugh, Judith D. (2016)
      Purpose: The aim of this study was to explore staffing issues and the workload drivers influencing nursing activities in designated small rural hospitals of Western Australia. A problem for small rural hospitals is an ...

    • Skills Required for Nursing Career Advancement: A Qualitative Study 

      Sheikhi, Mohammad R.; Fallahi-Khoshnab, Masoud; Mohammadi, Farahnaz; Oskouie, Fatemeh (2016-05)
      Abstract Background: Nurses require certain skills for progression in their field. Identifying these skills can provide the context for nursing career advancement. Objectives: This study aimed to identify the skills ...

    • Intellectual CAD for Three-Tier Wide Band WDR Filters 

      Yushchenko, Alexander G.; Mamedov, Dovlet S.; Zaytsev, Denis M. (Scientific Research Publishing, 2012-01)
      The paper presents an original physical points of an intellectual CAD system designing for three-tier wide band waveguide-dielectric filters with LM modes. On the basis of formalized physical knowledge about the behavior ...

    • Generalized PIC Detector for Distributed STBC under Quasi-Synchronization 

      Astal, Mohammed T.; Abu-Hudrouss, Ammar M. (Scientific Research Publishing, 2012-01)
      In this paper, we propose a Generalized Parallel Interference Cancelation (G-PIC) approach for the detection of D-STBC under Quasi-Synchronization in the case of any number of relay nodes with just statistical information ...

    • Microstrip Ultra-Wideband Filter with Flexible Notch Characteristics 

      Mokhtaari, Marjan; Bornemann, Jens (Scientific Research Publishing, 2012-01)
      A microstrip ultra-wideband (UWB) filter with unique shape, compactness, simplicity of operation and flexible notch characteristics is introduced. It is based on the fundamental and harmonic characteristics of a 50 Ohm ...

    • Improving Bandwidth of Yagi-Uda Arrays 

      Formato, Richard A. (Scientific Research Publishing, 2012-01)
      A novel approach for improving antenna bandwidth is described using a 6-element Yagi-Uda array as an example. The new approach applies Central Force Optimization, a deterministic metaheuristic, and Variable Z0 technology, ...

    • Comparison of Indoor Localization Systems Based on Wireless Communications 

      Dalce, Rejane; Val, Thierry; Bossche, Adrien V. (Scientific Research Publishing, 2011-10)
      Localization using a Wireless Sensor Network (WSN) has become a field of interest for researchers in the past years. This information is expected to aid in routing, systems maintenance and health monitoring. For example, ...

    • 3 - 10 GHz Ultra-Wideband Low-Noise Amplifier Using Inductive-Series Peaking Technique with Cascode Common-Source Circuit 

      Wu, Chia-Song; Lin, Tah-Yeong; Chang, Chien-Huang; Wu, Hsien-Ming (Scientific Research Publishing, 2011-10)
      The objective of this paper is to investigate a ultra-wideband (UWB) low noise amplifier (LNA) by utilizing a two-stage cascade circuit schematic associated with inductive-series peaking technique, which can improve the ...

    • A Comprehensive Parametric Study of Planar Inverted-F Antenna 

      Chattha, Hassan T.; Huang, Yi; Ishfaq, Muhammad K.; Boyes, Stephen J. (Scientific Research Publishing, 2012-01)
      This paper presents a comprehensive numerical and experimental study of Planar Inverted-F Antennas (PIFA) involving all the parameters which may affect the characteristics of PIFA. It is found that PIFA characteristics are ...

    • A Novel Ultra-Wideband Monopole Antenna with Band-Stop Characteristic 

      Lak, Hadi J.; Ghobadi, Changiz; Nourinia, Javad (Scientific Research Publishing, 2011-10)
      In this letter, a simple monopole antenna with variable band-notched characteristic for ultra wide band (UWB) function is proposed. Two L-shaped quarter-waveguide resonators coupled to the ground plane with two shorting ...