Tài liệu Lecture 14: The Theoretical Basis for Data Communication: pptx

... Winter 2000 Lecture 14 Communication Basics Part-2 The Theoretical Basis for Data Communication: Frequency-domain concept: A sine wave with a frequency of 1 kHz will look like this in the frequency ... So, for a 10 dBm signal (10 mW) the noise level has to be less than -20 dBm (10 microW). Shanon Theorem: Mathematical guidelines have been established to determ...

Ngày tải lên: 10/12/2013, 08:15

... even be considered for most data centers. Although it is standard for data cen- ters to run a fiber backbone for the main incoming lines (in combination with horizontal copper cabling for inner-room ... increased throughput within the data center. The plan specified a 50-micron fiber, rather than the industry standard 62.5-micron fiber. Higher bandwidth capacity is a val...

Ngày tải lên: 20/12/2013, 22:15

... permanently (without having to dial) from one site to another. • They are leased on a monthly basis and you pay for them whether you use them or not. Can be expensive unless usage is high. • ... the phone is "on-hook" it is not connected to the circuit. The open- circuit voltage presented to the phone is a 48 volts DC. Off-Hook: When the phone is lifted or connec...

Ngày tải lên: 10/12/2013, 08:15

... propeller but prevent the sea water outside the hull from comingn as well. For the fore end of stern tube is connected either with the shaft tunnel or the engine room, while the rear end is in ... and the following requirements for the alignment must first be met with. (1)All the fabrication, welding and hot work for the calibration below the upper deck to be...

Ngày tải lên: 25/01/2014, 23:20

Ngày tải lên: 15/02/2014, 13:20

... Circumstances leading to the termination of the scheme;  Other information which is necessary for investors to make an informed judgement. 8 February 2012 This publication has been prepared for general guidance ... Commission (the “SFC”) . 3 February 2012 PwC 3. Hong Kong Offering Document • The Hong Kong Offering Document of a scheme should contain, inter alia, the following...

Ngày tải lên: 19/02/2014, 14:20

... the original signal in the first place. That means we have to choose the sampling rate properly. The sampling theorem expresses the relation between the frequency of the analog signal and the ... modulation. • The samples of the message signal vary the duration of the individual pulses. 3. Pulse-position modulation (PPM) • The samples of the message signal var...

Ngày tải lên: 09/12/2013, 16:15

... the preceding code, the endpoint of the GetAccount method is specified in the SOAPAction header, and the method and its parameters are contained in the soap:Body element. The response to the ... provide information about who caused the fault to happen within the message path. It indicates the source of the fault. The value of the faultactor element is an URI that...

Ngày tải lên: 10/12/2013, 16:15

... describes the things that applications say to each other in their conversations. SOAP describes how they call each other on the phone. How do you greet the service at the other end? How do you ask for ... uses XML as a format for storing initialization data. As a universal format for data, XML is an ideal format for importing and exporting data between applications and...

Ngày tải lên: 10/12/2013, 16:15

... CHẤP TÀU BIỂN APPLICATION FORM FOR REGISTRATION OF SHIP MORTGAGE Kính gửi: (Tên cơ quan đăng ký) To: (Name of the Registrar of ship) Căn cứ hợp đồng thế chấp tài sản số: đã được ký kết ... Based on the Mortgage Contract No: signed between …. dated , hereby request ………. to register the mortgage of following ship into Vietnam National Ships Registration Book at ………… from...

Ngày tải lên: 13/12/2013, 18:15