chapter€8 €networking json xml and twitter

... of networking, XML, JSON and Twitter connectivity iOS SDK allows us to connect to the internet and retrieve and send data using the NSURLConnection class Our JSON serialization and deserialization ... deserialization will all be done using the NSJSONSerialization class XML parsing will be done using the NSXMLParser and the Twitter connectivity will be done using the Twitter framework 8.1 Downloading ... frameworks and static libraries Find and select both the CoreLocation.framework and the MapKit.framework and then press Add, as shown in Figure 6-2 430 | Chapter 6: Core Location and Maps Figure...

Ngày tải lên: 13/08/2014, 18:20

... self.view.center.y - 50); [self.buttonPickAndPlay setTitle:@"Pick and Play" forState:UIControlStateNormal]; [self.buttonPickAndPlay addTarget:self action:@selector(displayMediaPickerAndPlayItem) forControlEvents:UIControlEventTouchUpInside]; ... find and expand the Link Binary with Libraries box and press the + button, located at the bottom left corner of that box In the list that gets displayed, select the AddressBook.framework and press ... Name = Vandad Last Name = Nahavandipoor Address = ABMultiValueRef 0x684ad50 with value(s) 0: _$!!$_ (0x684af00) - vandad.np@gmail.com (0x684af20) 1: _$!!$_ (0x684aee0) - iosandosx@gmail.com...

Ngày tải lên: 13/08/2014, 18:20

Ngày tải lên: 26/08/2013, 13:10

Ngày tải lên: 14/10/2013, 17:11

Ngày tải lên: 08/02/2014, 14:57

... chun bao gm: kờnh chớnh C (Center), kờnh stereo c bn trỏi v phi L-R (Left and Right) v kờnh vũng Ls-Rs (Left Surround and Right Surround) H thng ny cũn c gi l h thng õm Stereo 3/2 ( phớa trc v ... chuyờn dng studio cho cht lng cao c ghi v phỏt 2.2.3 Cụng ngh nộn Cp tớn hiu audio trỏi v phi (L and R), ly mu theo chun AES/EBU vi tn s 48 KHz, 16 bit/mu n 20 bit/mu cho tc bit t 1536 Kbps n...

Ngày tải lên: 22/06/2014, 14:53

... thành phần có dải band tần biểu thị điều chế tần số tín hiệu biểu diễn hình 2.3 với ba điều kiện ứng với hình 2.2 Chồng phổ xảy dải band tần thành phần tần số lấy mẫu chồng lên dải band tần thành ... trình phức tạp với mục đích thực nén liệu 2.3 CHỌN TẦN SỐ LẤY MẪU Tần số lấy mẫu định độ rộng band tần hệ thống đạt mà không gây chồng phổ, định tốc độ bit hệ thống theo biểu thức: Tốc độ bit ... tiền lọc analog phải loại bỏ thành phần tần cao, nửa tần số lấy mẫu tần cao Đặc tuyến phẳng dải band tần yêu cầu đạt dễ dàng giảm xuống tới tận 1,5 tần số lấy mẫu tần cao Do trình lọc số thực làm...

Ngày tải lên: 24/07/2014, 16:20

Ngày tải lên: 26/07/2014, 13:21

... terms must be added to the right side of Equation 2-5 Tables 2-1 and 2-2 have basic tube and coil properties for use in Equation 2-5 and Table 2-3 lists the conductivity of different metals Inside ... 33 21 38 9.4 7.1 7.0 6.4 11.3 12.0 11.3 7.6 20 Design of GAS-HANDLING Systems and Facilities (text continued from page 17} ature and the tube wall temperature The tube wall temperature may be ... The specific heat of natural gas and hydrocarbon liquids can be calculated using procedures described later in this text (see pp 41 and 42) The physical properties and the optimum temperature range...

Ngày tải lên: 06/08/2014, 02:20

... desiccant and design on the basis of 6% loading Sorbeads weigh approximately 49 lb/ft3 (bulk density) The required weight and volume of desiccant per bed would be: 238 Design of GAS-HANDLING Systems and ... propane and/ or propylene Product Characteristics Commercial Propane Predominantly butanes and/ or butylenes 208* ASTMD- 1267-84 or butane and heavier, liquid volume percent max pentane and heavier, ... its various components and sell it as 250 Design of GAS-HANDLING Systems and Facilities Figure 9-4 Simplified flow diagram of a fractionation plant ethane, propane, butane, and natural gasoline...

Ngày tải lên: 06/08/2014, 02:20

... efficiency, and longer life than the high speeds 264 Design of GAS-HANDLING Systems and Facilities The major characteristics of low-speed reciprocating compressors are: Size • Some one and two power ... seal After-coolers and separators are required to separate the seal oil and recirculate it to suction Screw compressors can handle moderate amounts of liquid They can also handle dirty gases because ... centrifugal compressor (top) and vertically split centrifugal compressor, barrel (bottom) {Courtesy of Dresser-Rand Company.) 269 270 Design of GAS-HANDLING Systems and Facilities efficiently This...

Ngày tải lên: 06/08/2014, 02:20

... Dresser-Rand Company.) 306 Design of GAS-HANDLING Systems and Facilities tlon and discharge valves so that the valves can be removed and reinstalled These clearances are called fixed clearances and ... Dresser-Rand Company.} Figure 11-12 Journal bearings allow axial and circumferential oil flow abng the bearing 298 Design of GAS-HANDLING Systems and Facilities film between the stationary and rotating ... cylinders and crossheads are mounted (Courtesy of Dresser-Rand Company.) 288 Design of GAS-HANDLING Systems and Facilities facturers for a maximum continuous horsepower, speed (rpm), and rod load...

Ngày tải lên: 06/08/2014, 02:20

... crosshead shoes, and can also supply oil to the packing and cylinder lubrication system Splash lubrication systems are 314 Design of GAS-HANDLING Systems and Facilities the least expensive and are used ... maintenance and lost production Due to the basic design of the compressor, its rotating and reciprocating masses produce inertia forces and moments tha cannot be completely eliminated and must be ... forces and moments by adding counterweights to the crossheads but cannot totally eliminate them 320 Design of GAS-HANDLING Systems and Facilities In addition to the unbalanced forces and moments,...

Ngày tải lên: 06/08/2014, 02:20

... Pressure vessels handling salt water and fluids containing signficiant amounts of H2S and CO2 require corrosion protection Common corro- 350 Design of GAS-HANDLING Systems and Facilities SIDE ... should be provided for 12-in and larger manways for safe and easy opening and closing of the cover Figure 12-10 shows an example of a horizontal manway cover davit and sleeve details Vessel Supports ... cone apex angle 339 340 Design of GAS-HANDLING Systems and Facilities The weight of nozzles and internals can be estimated at to 10% of the sum of the shell and head weights The weight of a skirt...

Ngày tải lên: 06/08/2014, 02:20

... disc, and allowing the disc to rise, 366 Design of GAS-HANDLING Systems and Facilities Pilot-operated valves have the advantage of allowing operations near the set point with no leakage, and the ... depends on the relieving rate and the length and size of the outlet piping It can't be determined from* the vessel pressure and PSV orifice size because the flow is choked and is independent of the ... relief valve, and Figure 13-5 is a schematic that shows how the valve operates The bonnet is vented to atmosphere and a bellows is installed so that the back-pressure acts both downward and upward...

Ngày tải lên: 06/08/2014, 02:20

... arresters and stack arresters on fire tubes to prevent flash back and exhaust sparks, gas detectors to sense the presence of a fuel in a confined space, and fire 396 Design of GAS-HANDLING Systems and ... can lead to fire or explosion and thus to injury by way of creating an oil spill This type of accident is more time-dependent and lower in magnitude of damage, and thus an even lower level of ... blankets, pressure vacuum valves, and flame arresters can be installed to ensure that flame will not flash back into the tank and create an explosion Electrical shorts and sparks are also sources of...

Ngày tải lên: 06/08/2014, 02:20

... and Glycol Non-corrosive Hydrocarbons and Glycol Non-corrosive Hydrocarbons and Glycol Non-corrosive Hydrocarbons and Glycol Non-corrosive Hydrocarbons and Glycol Non-corrosive Hydrocarbons and ... Design of GAS-HANDLING Systems and Facilities Table 15-2 (Continued) Example Specifications of Pipe, Valves, and Fittings Couplings -in and smaller J4-in Plugs !44n, and smaller 2-in and larger Screwed ... steps: Design and maintain a system for process upset detection and shutdown—RP 14C Design and select hardware with known reliability and mechanical integrity to contain pressure and mitigate...

Ngày tải lên: 06/08/2014, 02:20

... Valves, Fittings, and Piping Details Figure 15-8 Needle valve (Courtesy of Anderson Greenwood and Co.) 437 438 Design of GAS-HANDLING Systems and Facilities Figure 15-9 Swing check ... for sizes 1-in and smaller Can be used in vertical lines Valve Selection and Designation Table 15-3 summarizes and compares the different valve types discussed in this chapter and highlights ... slugging and thus as small a diameter as possible should be used; consistent with pressure drop available and velocity constraints discussed in Volume 446 Design of GAS-HANDLING Systems and Facilities...

Ngày tải lên: 06/08/2014, 02:20

... with an understanding of basic engine operating principles and practices as necessary for selection and application The reader is referred to any of the many texts available on engine and turbine ... power, and exhaust Figures 16-3 and 16-4 illustrate a cross section and a P~V diagram for a two-cycle engine, respectively In this common type of engine, the piston in its traverse covers and uncovers ... Point under normal atmospheric pressure and temperature, PI and Tl It is then isentropically compressed to Point where the pressure and temperature are now P2 and T2 From Point the air flows into...

Ngày tải lên: 06/08/2014, 02:20

... similar to those of hydrogen and acetylene Group IIC includes both U.S and Canada Groups A and B To promote uniformity in area classifications for oil and gas drilling and producing facilities, ... engineering and to the various codes and standards listed at the end of this chapter for a more detailed description concerning the design of electrical circuits, sizing conductors, and circuit ... an allowance for future demand Standby loads not add to generator demand as they are activated only when another load is out of service Generators must be sized to handle the starting current...

Ngày tải lên: 06/08/2014, 02:20