It can actually heat the lead used in the older models. This could cause cardiac tissue damage in patients. The lead acts as a conductor to the radio frequency energy. The studies have shown a wide range in heating after an MRI. (Ahmed, et al., 2013) The gradient magnetic field comes about by the actual process of the MRI.
75uS is the time constant used for a high-pass filter to enhance the high frequency audio before transmission to help reduce noise upon reception. The PLL is the portion of the IC which locks your chosen transmission frequency to the crystal reference X1. The PLL portion also contains an oscillator circuit which works in conjunction with the external parts of D5 and the STUB (that weird trace on the back of the board). D5 is called a varactor diode, and is a special variety of diode that is connected backwards. As a reverse DC voltage is applied across the diode, its capacitance varies.
------------------------------------------------- Top of Form | Question 1 | ________ refers to applying the abilities of many computers in a network to work on a single problem at the same time. | Answer | Grid computing | CIS105 - Lesson 13 Quiz | | Question 2 | If two companies need to exchange data and documents over the Internet, they may be using ________ standards. | Answer | EDI | | | Question 3 | All of the following are necessary in a good disaster recovery plan EXCEPT | Answer | on-site physical backup protection. | | | Question 4 | When enterprises want all aspects of their computing integrated into one application, it is referred to as a | Answer | common virtual system | | | Question 5 | Which of the following is another term for duplicating all enterprise data? | Answer | Mirroring | | | Question 6 | Which of the following solutions address the problem of disparate applications that run on different platforms?
NT1210 Research Paper From what I gathered about “Layer 2 switches” is that the Layer 2 switches use a MAC address from a host NIC card. This makes it to decide where to “forward frames”. Also Layer 2 is a hardware-based control. It uses “application-specific integrated circuits”, which provides “wire speed, high speed, low latency”. OIS layer 7 packets are called “layer 4-7 switches” these are like content switches, content service switches and web switches or application switches… Content switches are normally used for “load balancing” among server groups like on TCP/IP.
iii. Internet – Defines the protocols used for addressing and routing the data packets. iv. Network Interface – Defines how the host connects to the network. 2.
Inside a speaker: 1. Cone 2. Electromagnet (coil) 3. Permanent magnet The frequency of the vibrations governs the pitch of the sound produced, and their amplitude affects the volume – turn your stereo up high enough and you might even be able to see the diaphragm covering the cone move. To reproduce all the different frequencies of sound in a piece of music faithfully, top quality speakers typically use different sized cones dedicated to high, medium and low frequencies.
This link is above the Physical layer it is responsible for end-to-end validity of what is being transmitted. Datalink layer is divided into; two sub-layer which is Media Access Control (MAC) that determines the physical addressing of the host. The MAC addresses (physical device addresses) that communicate with other devices within the network. Then there is the Logical Link Control (LLC) sub layer. What it is responsible for is the synchronizing frames, error checking, and the flow control.
It does not guarantee data integrity and discard packets when there is network congestion. In reality, it still delivers data with high reliability. Frame relay uses DLCI in order to communicate frames from one side of the network to the other, the DLCI should be unique for each path on the network, so that when a frame is sent to a certain location and the DCLI is attached it can be sent to the correct recipient. The DLC looks like the
If the sound created was displayed visually, it would look like what is called a wave pattern. The electronic sound synthesizer or synth for short is a device designed to create or manipulate sounds. A synthesizer is composed of many ways to create and manipulate sounds. Depending on the synth the options range from filtering out certain frequency’s and distorting sounds to pitching them higher than any know instrument can achieve. However, there is one component of design of which all the others build upon, the oscillators.
When we use some electric appliances, the electromagnetic waves of these appliances will change periodically and produce enough energy to cause ionization. As we all known, ionization can dislodge orbiting electrons from atoms or break bonds which hold molecules together and then producing ions or charged particles. During this process, the production of ions or ionization in our tissues may cause direct damage to cells and cause other health risks. So EMF radiation is also called ionizing radiation. (DCMNR, 2005) This conception maybe a little bit confusing, but it’s easy to find out that EMF really produces some extra electrons or magnetic field which we have never seen before.