Dynamic frequency scaling

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    proposed to decrease energy consumption for them. For CMOS based processors, the power consumption is dominated by dynamic power dissipation, which is quadratically related to supply voltage and linearly related to processing frequency [4]. Besides, the processing frequency also has an almost linear relation with supply voltage. Consequently, for lowering system’s energy requirements, processing frequency and the equivalent supply voltage is lowered to reduce the power consumption cubically. The motivation of trading processing speed for energy savings was first proposed by Weiser et al. in [5], where processor frequency and subsequent supply voltage is adjusted by means of utilization based predictions. Yao et al. [6] illustrated a polynomial-time static off-line scheduling algorithm for autonomous tasks running with variable frequencies, assuming worst-case execution time. Based on dynamic voltage scaling (DVS) technique, Moss´e et al. proposed and analyzed a number of schemes to dynamically adjust processor speed with slack reclamation [7], where statistical information about task’s execution time was used to slow down processor speed uniformly and set aside more energy. The best proposal is an adaptive one that takes an aggressive approach while providing safeguards that avoid violating application deadlines [8][9]. Another important energy management technique is Dynamic Power Management (DPM) that puts the idle system components into low-power states whenever…

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    The motion in the fastening reason for the unit might be supervised with vibration pickup and examined to determine the spectrum. These details may then be employed to set the shaker drive signal to proper spectrum shape and level. The best approach would be to arrange the machine to watch and control the amount instantly. The three functional limitations to the performance of electrodynamic shaker are displacement, velocity and acceleration. Shaker is operated by displacement at the lowest…

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    Polarization In Antenna

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    Polarization in Antenna Polarization is the basic thing used in transmission antennas for the propagation and reception of the signals. As we know that antenna emits electromagnetic waves in the space for the communication purposes. These two types of waves as depicted by the name Electro-Magnetic is a combination of electrical and magnetics fields. These two waves are mutually orthogonal i.e. oriented at an angle of 90o with each other. The general wave form is given as Fig: Electromagnetic…

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    Chapter eight of the text Sound and Recording by Francis Rumsey and Tim McCormick, discusses the principles of digital audio, and contrasts digital with analog. The text also illustrates how digital and analog work together to produce desired sound. In the world of audio there are two types; digital and analog. Analog can be described as physical or tangible in a sense, being etched onto some type of media. Digital however, is a representation of the audio waveform, which is converted into a…

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    ROMAC Stability Test Fig

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    subsection{Experiment description} In order to validate this data procedure and estimation method, we carried out experiment on the ROMAC stability test rig as depicted in Fig. ef{fig2:subfig:a}. The fluid and magnetic bearing configurations were in cite{cloud2007stability}, and during the excitation process, the temperature of inlet oil was 37 ${}^{circ}mathrm{C}$. The shaft rotates at 3500 rpm, and the actuator #2 that is located at the node 47 in the FE model excited this test rig at six…

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    Firstly, its advantages include being safe and painless. Unlike X-ray, MRI scanners do not use ionizing radiation; instead they use magnetic fields and radio waves which are harmless and can be absorbed by the body without causing mutations because radio waves have a low frequency and thus a low energy that doesn’t cause harm. Secondly, the pictures that are created by the MRI are precise which allow definite analysis of the image by a medical professional; especially for organs such as brain,…

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    they combine with the laser beam entering the instrument. In this way, the laser beam is amplified without using a high power beam at the source [1].Figure 1: The LIGO Interferometer[2]2 LIGO Laser For laser interferometers, the most important property is coherence of the laser beam. Because of this,the precision of measurement depends on the intensity and frequency noise of the source. The most common type of laser used in interferometers are solid-state lasers due to their…

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    example, say that you are in a room. You hear some women to your right talking in a high pitched voice, then to your left you hear a man talking in a low pitched voice. You wonder why these two people standing in the same room are able to sound so different. This is because of both the frequency of the sound coming out of the person, and also the wave length. The frequency of a sound wave is able to have a shorter distance between its crests in a time period, the highs and lows of a wave. While…

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    Like light waves, sounds waves are also reflected, refracted, diffracted and exhibit interface. Sound is a mechanical wave and needs a material medium like air, water, steel etc for its propagation. It cannot travel through vacuum. Some of the major properties are stated below. 2.1.1 Speed It depends on the medium through which sound is traveling, also it is a fundamental property of a material. The speed of sound is proportional to the square root of the ratio of the elastic modulus (stiffness)…

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    seismic relocation is a propelled method in light of wave condition and uses limited contrasts. It has a few points of interest over ordinary strategies as it deals with sidelong speed varieties, can endure bigger speed blunders, exact up to 70 degrees and can deal with plunges up to 90 degrees. Be that as it may, it is computationally extremely concentrated. The movement calculations in ω - x area are innately parallel as far as frequencies. This favors us to respond to the call of exceptional…

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