Physical bandwidth

We report a simple design of a water-based broadband metamaterial absorber in the terahertz region. The absorption performance of the designed absorber is simulated using numerical method. Due to the large frequency dispersive permittivity and high relative dielectric loss of water, the bandwidth of the proposed absorber can extend.

10p vispiderman 15-06-2023 6 2   Download

Modern analytical applications of liquid chromatography require more and more efficient columns. In this work, the possibility of utilizing particle size gradient in the chromatographic column was studied by a theoretical approach. In the course of our work three different scenarios of particle size gradients were considered with different shapes (linear, convex and concave).

8p viginny 23-12-2022 12 3   Download

Lecture Principles of network and system administration: Security provide students with knowledge about risk management; security policies, security goals; OS hardening; authentication; PAM; passwords; incident response; data confidentiality; secure the physical system;...

36p tanmocphong 19-01-2022 13 3   Download

Chapter 6 - Bandwidth utilization: Multiplexing and spreading. In this chapter we will show how we can use the available bandwidth efficiently. We discuss two separate, but related topics, multiplexing and spreading.

58p koxih_kothogmih5 01-09-2020 10 1   Download

In this paper, we propose two schemes for localizing P2P traffic without any peer reaction: (1) fixed-length bandwidth limitation scheme, (2) hierarchical bandwidth limitation scheme. By intentionally limiting the bandwidth of each connection path between peers based on geographical location of the peers destinations, the traffic can be localized with single level for the first scheme and with multiple levels for the second scheme.

14p vixyliton2711 17-04-2019 15 1   Download

The IEEE 802.16 std. includes medium access control (MAC) and physical (PHY) layer specifications and is consider to be a promising technology. Bandwidth reservation is employed to provide quality of service (QoS) to guarantee different services specified in the standard. A bandwidth request/grant scheme is defined in the IEEE 802.16 standard.

6p girlsseek 27-02-2019 33 0   Download

In this paper, we review the theoretical and experimental aspects of coherent diffractive imaging using a focused narrow-bandwidth table-top high harmonic source. The review begins with an outline of generation and characterization of the high harmonic source. Theoretical description of coherent diffractive imaging technique is then summarized. The review concludes with our recent results in imaging using a single harmonic beam selected by employing XUV focusing mirrors.

18p thuyliebe 08-10-2018 24 3   Download

Chapter 6 - Physical layer. In this chapter, we study the duties of the physical layer, first as a converter that converts data to signals, then as a manager that controls the medium. After reading this chapter, the reader should be able to: Distinguish between analog and digital data, distinguish between analog and digital signals, understand the concept of bandwidth and the relationship between bandwidth and data transmission speed,...

66p nhanmotchut_2 19-10-2016 46 2   Download

The quality of phased array and synthetic aperture ultrasonic images is limited by several factors determined by the sound propagation physics and diffraction laws. Image quality is mainly determined by: Resolution, which depends on signal bandwidth (in the axial direction) and on the aperture extent (in the lateral direction); Dynamic range, which is bounded by the ratio of the main to the sidelobes level and is related to the smallest features detection capability.

25p thaodien102 06-11-2015 32 2   Download

What can you measure and what are your limits when orbiting in space? Learn about what physical quantities you can measure and what types of sensors you can buy or build. We cover the 5 essential design limits as well: power, bandwidth, resolution, computing... and legal limitations. Explore what you can play with using your own personal satellite.

120p ringphone 07-05-2013 56 5   Download

Today, the data acquisition technology has found its way into virtually every segment of electronics. A digital signal processing (DSP) system accepts analog signals as input, converts those analog signals to numbers, performs computations using the numbers and eventually converts the results of the computations back into analog signals. Once converted to numbers, signals are unconditionally stable. Error detection and correction methods can be applied to store,transmit and reproduce numbers with no corruption. Signals stored digitally are really just large arrays of numbers.

351p namde01 11-04-2013 80 9   Download

The Data-over-Cable Service Interface Specification (DOCSIS)is an international standard developed by CableLabs, a non-profit research and development consortium for cable-related technologies. • DOCSIS specifies the OSI Layer 1 and Layer 2 requirements: Physical layer-For data signals that the cable operator can use, DOCSIS specifies the channel widths (bandwidths of each channel) as 200 kHz, 400 kHz, 800 kHz, 1.6 MHz, 3.2 MHz, and 6.4 MHz. DOCSIS also specifies modulation techniques (the way to use the RF signal to convey digital data).

47p mrdvad11 12-03-2013 131 52   Download

In 1991, Mark Weiser described his vision of an emerging world of pervasive, embedded computation. He predicted “a physical world that is richly and invisibly interwoven with sensors, actuators, displays, and computational elements, embedded seamlessly in the everyday objects of our lives and connected through a continuous network.

425p japet75 30-01-2013 56 6   Download

Tham khảo sách 'photonic crystals – innovative systems, lasers and waveguides', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

0p greengrass304 18-09-2012 75 7   Download

NETWORKED SYSTEMS RELIABILITY Many physical problems (e.g., computer networks, piping systems, and power grids) can be modeled by a network. In the context of this chapter, the word network means a physical problem that can be modeled as a mathematical graph composed of nodes and links (directed or undirected) where the branches have associated physical parameters such as flow per minute, bandwidth, or megawatts. In many such systems, the physical problem has sources and sinks or inputs and outputs, and the proper operation is based on connection between inputs and outputs....

48p vaseline 23-08-2010 100 11   Download

Network Economy Measures People who plan telecommunications networks are always searching for equipment economy a network for a given information carrying capacity; or, measures: reducing cost the of conversely, increasing the information throughput of a fixed network resource. To achieve their aims, can they either maximize electrical the bandwidth available from a given physical transmission path,or (if it is the other kindof economy they want)they can reduce the amount of electrical bandwidth required to carry individual messages or connections. ...

16p huggoo 20-08-2010 64 3   Download

Private SONET networks provide large multi-site enterprise customers and campuses a simple cost-effective way to interconnect each site or building using their own fiber, leasing SONET bandwidth or leasing dark fiber. Large enterprise customers typically have multiple sites in a metro or campus area. In addition to requiring connectivity to corporate headquarters, many of these sites need to be interconnected. Since building a physical mesh network can become quite expensive, enterprise customers require a cost-effective solution that can interconnect their sites.

4p halanh 14-08-2009 79 5   Download

ADC’s central office cables deliver the data bandwidth to eliminate throughput bottlenecks or downtime and improve customer satisfaction. The increased throughput potential translates to increased customer satisfaction. ADC combines innovative design and application engineering to deliver a cabling solution that exceeds your network’s physical layer requirements.

60p maiphuong 13-08-2009 87 9   Download

Campus-RS™ FLEX is an interface module that installs directly into a Campus-RS remote or Campus-RS Star concentrator and provides a multiport local interface capable of supporting a wide range of concurrent data, voice and video applications. Campus-RS FLEX supports a line speed of 1.544 Mbps (T1) and provides the capability to allocate this bandwidth between the single DSX-1 port and the two serial data ports. The DSX-1 provides support for up to 24 voice channels over a T1 backbone.

2p thuyvan 13-08-2009 123 10   Download