Related Properties in .NET

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Of the many satellite systems in place covering the western hemisphere, the geostationary ones are most important to the cable television industry. A geostationary satellite has a circular, equatorial orbit, as shown in Figure 3-18. Notice that the usual orbit direction is the same as the Earth s rotation and the height above the Earth s surface is about 36,000 kilometers (21,600 statute miles). One such satellite can cover more than two-thirds of the Earth s surface. Satellites that orbit the Earth have to conform to the velocity equation given in Figure 3-18. Satellites in a geostationary orbit have the same angular velocity as the Earth. Therefore,

The Zilla controller (Zilla), shown in Figure 7-5, is by far one of the most popular and powerful motor controllers available for electric vehicles. The Zilla has exceptionally high power density. According to the conversion specialists and people in the EV community today, the Zilla is ranked as one of the best controllers out there on the market. This controller can make your EV have the most amazing pickup and torque like no other on the market (or even on your block). We like that Zilla cared about safety in their literature because it shows that a reasonably priced, efficient, and off-the-shelf controller can still be safe. From carefully monitoring that the controller comes up to voltage, communicates properly, and checks the integrity of the output stage before engaging the main contractor, to the dual microprocessors that cross-check and have independent means of shutting the system off, there is no other DC EV controller that approaches this level of security. It is no surprise that all of the world s quickest electric vehicles use Zilla controllers, but the safety features allow them to also excel in street applications. The Z1K in particular has become very popular for street conversions due to its superior feature set and low price. Table 7-1 shows the specifications of this popular controller.

1998, InnoVentry embarked on a strategy featuring unsupervised ATM kiosks, known as Rapid Payment Machines (RPM) that used facial recognition technology to identify customers. InnoVentry sought to reduce fraud, which has long plagued the check-cashing industry. Dr. Joseph Atick, whose company, then known as Visionics, provided the FaceIt facial recognition technology, claimed in an interview with Bank Technology News that The fraud rates with our check-cashing clients are down to half a percent because of the facial recognition biometrics. InnoVentry s major participants included Wells Fargo & Co., Cash America International Inc., and Diebold, a leading ATM maker. Investors pumped over $250 million into the venture. As an operational decision, InnoVentry located its RPM kiosks in high-traffic retail stores that offered a safe, well-lit environment with extended hours. InnoVentry s RPMs could be found throughout the United States, including Ohio, Pennsylvania, Arizona, Arkansas, California, Colorado, Florida, Georgia, Illinois, Louisiana, Massachusetts, Michigan, Nevada, North Carolina, Texas, and Wisconsin. It had agreements with major retail chains including Circle K, Kroger, Wal-Mart, and Albertson s Race-Trac to install the ATMs in their premises. (For more information, go to http://www.business-journal.com/LateNov00/ Dieboldcontract.html.) To enroll, a customer phoned a central call center using a telephone attached to the RPM. The customer service representative then got personal information, along with the enrollee s social security number. A camera in the RPM kiosk captured a digital photograph of the customer s face. Facial recognition software then generated a biometric template from the photograph. (For more information, go to http://www.dss.state.ct.us/digital/news24/bhsug24.htm.) To cash their checks and receive cash, customers inserted their checks into the RPM and followed the instructions on an interactive touch screen. For authentication, a customer entered his or her social security number, and InnoVentry then verified the claimed identity by doing a one-to-one match comparing the facial image presented to the template on file for the customer. On average, the transaction could be completed in less than three minutes. At the height of its operation, InnoVentry had enrolled 2.5 million people, cashed 8.0 million checks, and installed 1,400 RPMs (for more, go to http://www.biometrics-today .com/novdec01news.html). Over $4 billion worth of checks had been cashed (for more, go to http://www.banktechnews.com/btn/articles/btnsep01-1.shtml). Despite these impressive numbers, the business model failed. InnoVentory shut down in the Fall of 2001. Simply put, the cost of running the machines could not be covered by the charges generated, set at a small percentage of the value of each cashed check. More specifically, according to Ken Rees, the former InnoVentry chief operating officer, the cause of failure was the higher than expected failure rate of the technology in authenticating customers, which translated to lost revenue. As reported by ATM & Debit News in February 2002, Rees said that at some locations, up to 30 percent of attempts to authenticate users of InnoVentry s RPMs failed; most locations had failure rates of about 5 percent.

Payment Card Industry Data Security Standards (PCI DSS) requirement 2.2.1 is a nebulous area for many, especially as it relates to cloud computing. The requirement states that an organization can implement only one primary function per server. But does that mean one physical server The short answer is no. You can have multiple systems that are virtualized; you just have to ensure that they are segmented and isolated from each other. Virtualization is an emerging technology, and technology changes everything. In the past, copyright law was written to prevent you from making copies of movies and music. At the time, no one dreamed that there would be a day when copyrighted materials could be saved on a computer or an iPod. Now the copyright laws are written in such a way that all the bases are covered, no matter what technology throws at them. Expect PCI DSS rules to be changed as well.

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Although it doesn t offer all options for path properties, the Property Bar is probably the most convenient route to outline properties. It actively displays a selected path s current properties, which you can change when a path is selected. The Property Bar, shown here while a path is selected, has width, style, and arrowhead options you can make an open path with a head, tail, two heads it s up to you. Other options pertain to controlling connector lines, wrapping text around a path, and items not directly related to the look of the outline. Closed paths, naturally, can t have arrowheads, but your options for dashed lines

voltage source. While a voltage source operates at a xed voltage and the current owing through it is determined by the other components in the circuit, a current source always has a speci ed current owing through it and the voltage across it is determined by what elements are connected to it in the circuit. A current source is shown in a circuit diagram by drawing a circle that contains a current arrow in it. As usual, the arrow indicates the direction of ow of positive charge. An example is shown in Fig. 1-9. It is also possible to have dependent current sources. These are indicated with a diamond shape containing an arrow indicating the direction of the current. The current that ows through the element can be dependent on some other quantity in the circuit. For example, the current can be dependent on some voltage v(t) using the relation i(t) = gv(t), where g is a constant. This is shown in Fig. 1-10.

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A 20-year-old woman was worried about a mole that was getting darker. 1. 2. 3. 4. 5. Globules identify a melanocytic lesion. This could be the mountain and valley pattern of a seborrheic keratosis. This seborrheic keratosis is filled with pigmented pseudofollicular openings. Irregular dots and globules suggest that this is a changing dysplastic nevus or melanoma. This is the classic cobblestone global pattern of a banal nevus.

You say you want to be less stressed, yet you don t talk much about giving up what you currently do or changing your approach to work so you can relax more.

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You can create a BitArray from an array of bytes using this constructor: public BitArray(byte[ ] bytes) Here, the bit pattern in bytes becomes the bits in the collection, with bytes[0] specifying the first 8 bits, bytes[1] specifying the second 8 bits, and so on. In similar fashion, you can construct a BitArray from an array of ints using this constructor: public BitArray(int[ ] values) In this case, values[0] specifies the first 32 bits, values[1] specifies the second 32 bits, and so on. You can create a BitArray of a specific size using this constructor: