python s mutableset abstract base class

... light-sensing chips that what film used to in the cameras of old Sensors improve each year; but in general, the smaller the sensor, the worse the photos Tiny sensors mean that less light is used ... lens and sit in the bleachers at a tennis tournament, snapping hyper-closeups of the players’ sweaty faces You can read more about SLRs—and lenses—in Chapter Yes, lenses are expensive—some cost ... there s a maximum burst of, say, 10 or 20 shots.) Why is burst mode so high on this “important features” list? Because it s great for sports and wildlife It s also fantastic for portraits, because...

Ngày tải lên: 24/04/2014, 15:03

... Express slots Accelerated Graphics Port  AGP provided much faster speeds for video cards than PCI, but it has mostly been replaced by PCI Express PCI Express  PCI Express is currently used ... video cards and other adapter cards Different speed slots are used for different types of devices Expansion Slots This motherboard has two green PCIe 16x slots, two white PCI slots, and one ... There are several types of adapter cards, but the majority of them use PCI, PCIe, and AGP expansion slots  Adapter cards allow users to install more powerful components than those embedded...

Ngày tải lên: 19/03/2014, 22:09

... changes in timing of the disclosures might benefit consumers Consumers also report in the surveys that disclosures might be clearer The survey results suggest that much of consumers' dissatisfaction ... uninsured personal disaster In this view, consumers buy the insurance because they want it, not because it is sold overly aggressively Furthermore, in this view, loss ratios are reasonable because ... know/Decline to answer Total Satisfied? Very Somewhat Neither satisfied nor dissatisfied Somewhat dissatisfied Very dissatisfied Do not know/Decline to answer Total Purchase again? Yes No Do not know/Decline...

Ngày tải lên: 22/03/2014, 18:20

... Low-end systems EAS systems (Electronic Article Surveillance systems; see Section 3.1) represent the bottom end of low-end systems These systems check and monitor the possible presence of a transponder ... common in these systems These systems are operated at all frequencies available to RFID systems 2.4.3 High-end systems The high-end segment is made up of systems with a microprocessor and a smart card ... Sequential System SMD Surface Mounted Devices SNR Serial Number SOF Start of Frame SRAM Static Random Access Memory SRD Short Range Devices (low power radio systems for the transmission of data...

Ngày tải lên: 14/08/2014, 11:21

... system also reaches a maximum in the Qmax range This is particularly important in systems designed for mass production Such systems should be designed so that reliable operation is still possible ... to the slow dispersion speed of the surface waves on the substrate the first response pulse is only received by the reader after a dead time of around 1.5 ms after the transmission of the scanning ... coupling in close coupling systems occurs between two parallel metal surfaces positioned a short distance apart from each other This procedure is also used in close coupling smart cards The mechanical...

Ngày tải lên: 14/08/2014, 11:21

... ms and must also transmit booking data Contactless smart cards for 'hands free' access systems that transmit just a few bytes — usually the serial number of the data carrier — within – seconds ... coupled RFID system is always a compromise between the system 's range and its data transmission speed (baud rate/subcarrier frequency) Systems that require a short transaction time (that is, rapid ... cross-section) is used for the transmission of data from a transponder to a reader Because the reflective properties of objects generally increase with increasing frequency, these systems are used...

Ngày tải lên: 14/08/2014, 11:21

... systems Typical applications in these classes are movement sensors (for alarm systems, door openers and similar applications), data transmission systems (wireless LAN for PC), remote control systems ... to the class and class types Therefore class and class types will not be further considered in this book 5.2.2.1 Carrier power - limit values for H field transmitters In class and class inductive ... forms the basis for national European regulations for low power radio systems EN 300 440 classifies devices according to three types — classes I to III RFID systems with backscatter transponders...

Ngày tải lên: 14/08/2014, 11:21

... high security applications, such as access systems and systems for making payments or issuing tickets However, the use of RFID systems in these applications necessitates the use of security measures ... ms pause triggers the simultaneous start of the pulse pause cycle of reader A Stationary readers also use a synchronisation cable connected to all readers in the system The synchronisation signal ... cards possess a 4-byte serial number (single size) The standard also permits serial numbers of bytes (double size) and even 10 bytes (triple size) If the selected card has a double or triple size...

Ngày tải lên: 14/08/2014, 11:21

... value Yes Yes Gases Yes Yes Conductivity Yes Yes Yes Yes Yes Yes Yes 10.4.2 Measurements using microwave transponders Industry standard microwave transponders can also be used to measure speed ... transponder Active transponder Single chip transponder Temperature Yes Yes Yes Yes Moisture Yes Yes Yes Yes Pressure mm Yes Yes Yes Shock mm Yes Yes Acceleration mm Light Yes Flow Yes Yes PH ... application 's own key The majority of segmented memory systems use fixed segment sizes In these systems, the storage space within a segment cannot be altered by the user A fixed segment size has the...

Ngày tải lên: 14/08/2014, 11:21

... transmission output module and filtering out just the response signal from the transponder In subharmonic systems, this is a simple process, because transmission and reception frequencies are usually ... greatest potential exists for the use of RFID systems, particularly contactless smart cards In Europe and the USA traffic associations are still operating at a huge loss, sometimes as much as 40% ... passes: Transport companies incur high costs through the sale of travel passes by automatic dispensers For example, the sale of a travel pass through an automatic dispenser in Zurich costs Sfr...

Ngày tải lên: 14/08/2014, 11:21

... industry 13.8.2 Waste disposal Because of increasingly rigorous environmental legislation, the cost of waste disposal is increasing all the time Costs associated with creating new waste disposal ... companies and associations The idea is that users, manufacturers, consultants, associations and organisations work together to create interdisciplinary solutions The working group is now active across ... Case Study, Meat Processor, J M Schneider Meats, Escort Memory Systems, Scotts Valley, California EURO ID (n.d.) Datasheet: Anwendungsbeispiele für das trovan® RF-Identifikationssystem — Dienstleistungen...

Ngày tải lên: 14/08/2014, 11:21

... Reindl, L.,Scholl, G.,Ostertag, T.,Scherr, H.,Wolff, U and Schmidt, F (1998c) Theory and application of passive SAW radio transponders as sensors, IEEE Transaction on Ultrasonics, Ferroelectrics and ... transponder system for measuring intraocular pressure, Technical Digest 11th International Congress on solid-state sensors and actuators Transducers '01 and Eurosensors XV, Munich, Germany, 10–14 ... authorisation 357 Access control 25, 360 Access protection page 290 Access register 282 Access rights 283 Acoustomagnetic security system 37 Activation field 230 Activator 29 Active transponder...

Ngày tải lên: 14/08/2014, 11:21

... permission of Siemens AG, ZT KM, Munich) Figure 10.40: A surface wave transponder is used as a pressure sensor in the valve shaft of a car tyre valve for the wireless measurement of tyre pressure ... the associated phase values between two pulses (?τ = 0.8 s) or four pulses (?τ = 2.27 s) The high degree of linearity of the measurement is striking (reproduced by permission of Siemens AG, ... fields of application for contactless smart cards are public transport and change systems for telephone boxes or consumer goods (groceries, cigarettes) (reproduced by permission of Philips Electronics...

Ngày tải lên: 14/08/2014, 11:21

Ngày tải lên: 25/11/2014, 07:37

... analysis and synthesis mode, where each proposition encompasses two separate proofs: first, assuming the problem as solved, a concomitant construction is shown in the analysis Then, in the synthesis, ... edition is the recovery of an ancient form, I not discuss as fully the issues – very interesting in themselves – of the various processes of transmission and transformation Moerbeke s Latin translation ... a postulate nor a proposition Archimedes does not set a series of definitions and postulates, but simply makes observations on his linguistic habits and assumptions g e n e r a l c o m me nts Definitions...

Ngày tải lên: 21/09/2012, 11:00

Ngày tải lên: 04/10/2012, 10:24

Ngày tải lên: 05/10/2012, 09:56

... products and services in particular Businesses have three ways to bring a new product or service to customers, to use: Mass marketing: businesses mass produces, mass distributes, and mass promotes ... and successes of Agribank, the branch has its decisions, policies to precede those successes Agribank Thanh Xuan posts in the account dependently, has its own seals, organizes and operates under ... high secure This shows profession of providing card products and services * Acquiring cards Besides issuing card, acquiring card operation plays an important part in success of card business of...

Ngày tải lên: 09/11/2012, 15:31

... students shortcomings and suggest some techniques in translating metaphors In terms of existing shortcomings in metaphoric translation, the most common mistakes are those in word choice and expressions, ... considered separately And metaphor is an expression that describes a person or object by referring to something that is considered to possess similar characteristics Very often, an idiom has no ... results for this research, asking specialist idea method was conducted in order that these instruments would clarify and illustrate theories on English Vietnamese translation of metaphors, so...

Ngày tải lên: 26/11/2012, 09:53