Ngày tải lên: 18/10/2013, 17:15
Ngày tải lên: 27/01/2014, 02:20
Module 10 Inheritance, Virtual Functions, and Polymorphism ppt
Ngày tải lên: 06/03/2014, 22:20
Báo cáo hóa học: " Research Article Monotonic and Logarithmically Convex Properties of a Function Involving Gamma Functions" pdf
Ngày tải lên: 22/06/2014, 02:20
Configuring OSPF Virtual Link
... 192.168.3.1 [110/65] via 192.168.240.1, 00 Ngoài ra để xem " ;virtual link" bạ Code: #sh ip ospf virtual- links Tóm lại : == virtual links phải được cấu h vùng trung chuyển (transit area) == ... " ;virtual link" trên Singapore và SanJose1 thông qua area 51 như một "vùng trung chuyển" (transit area) Code: SanJose1: ! router ospf 1 log-adjacency-changes area 51 virtual- link ... configuration : 1790 bytes ! Code: Singapore: ! router ospf 1 log-adjacency-changes area 51 virtual- link 192.168.1.3 network 192.168.3.0 0.0.0.255 area 51 network 192.168.224.0 0.0.0.255 area...
Ngày tải lên: 14/08/2012, 09:32
Tổng quan về Functions
... http://www.w3.org/TR/xquery/ XQuery 1.0 & XPath 2.0 Functions & Operators: http://www.w3.org/TR/xpath -functions/ XSLT-Only Functions current() as item() current-group() as item()* ... Date/Time Functions adjust-date-to-timezone(xs:date?) as xs:date? adjust-date-to-timezone(xs:date?, xs:dayTimeDuration?) ... xs:string?) as xs:string? format-time(xs:time?, xs:string) as xs:string? function- available(xs:string) as xs:boolean function- available(xs:string, xs:integer) as xs:boolean generate-id() as...
Ngày tải lên: 21/08/2012, 09:30
Procedural Abstraction and Functions That Return a Value
... Publishing as Pearson Addison-Wesley Function Libraries Predefined functions are found in libraries The library must be “included” in a program to make the functions available An include directive ... Education, Inc. Publishing as Pearson Addison-Wesley Predefined Functions C++ comes with libraries of predefined functions Example: sqrt function the_root = sqrt(9.0); returns, or computes, ... that accompanies a function declaration? Describe what it means to say a programmer should be able to treat a function as a black box? Describe what it means for two functions to be black...
Ngày tải lên: 12/09/2012, 22:48
C++ Basics - Functions for All Subtasks
... Functions Each function should be tested as a separate unit Testing individual functions facilitates finding mistakes Driver programs allow testing of individual functions Once a function ... as Pearson Addison-Wesley Rule for Testing Functions Fundamental Rule for Testing Functions Test every function in a program in which every other function in that program has already been ... Publishing as Pearson Addison-Wesley Display 5.1 void -Function Definition Two main differences between void -function definitions and the definitions of functions that return one value Keyword void...
Ngày tải lên: 12/09/2012, 22:49
Templates
... Addison-Wesley Defining the Member Functions Member functions of a template class are defined the same way as member functions of ordinary classes The only difference is that the member function definitions ... functions index_of_smallest also uses a general algorithm and could be defined with a template swap_values has already been adapted as a template All three functions, defined with templates, ... able to separate declaration and definitions of template functions just as you do with regular functions To be safe, place template function definitions in the same file where they are used…with...
Ngày tải lên: 12/09/2012, 22:55
Virtual Private Network (VPN)
... SUMMARY VPNs do not make use of dedicated leased lines VPNs send data through a secure tunnel that leads from one endpoint to another VPNs keep critical business communications private and secure VPN components VPN servers VPN clients Protocols 39 TUNNELING PROTOCOLS Layer 2 Tunneling Protocol (L2TP) Provides better security through IPSec IPSec enables L2TP to perform Authentication Encapsulation Encryption 18 TUNNELING PROTOCOLS Secure Shell (SSH) Provides authentication and encryption Works with UNIXbased systems Versions for Windows are also available Uses publickey cryptography Socks V. 5 Provides proxy services for applications That do not usually support proxying Socks version 5 adds encrypted authentication and support for UDP 20 16 ENCRYPTION SCHEMES USED BY VPNS (CONTINUED) Secure Sockets Layer (SSL) (continued) Steps Server uses its private key to decode premaster code Generates a master secret key Client and server use it to generate session keys Server and client exchange messages saying handshake is completed SSL session begins 34 SUMMARY (CONTINUED) VPN types Sitetosite Clienttosite Encapsulation encloses one packet within another Conceals the original information VPN protocols Secure Shell (SSH) Socks version 5 PointtoPoint Tunneling Protocol (PPTP) Layer 2 Tunneling Protocol (L2TP) 40 Virtual Private Network (VPN) 29 BIếN ĐổI ĐÓNG GÓI TRONG VPN (ENCAPSULATION) Các buớc trong tiến trình VPN Đóng gói (Encapsulation) Mã hoá (Encryption) Xác thực (Authentication) Encapsulation Đóng gói dữ liệu và các thông số khác nhau Ví dụ như IP header Bảo vệ tính nguyên vẹn dữ liệu 15 31 27 VPN CORE ACTIVITY 2: ENCRYPTION Encryption Process of rendering information unreadable by all but the intended recipient Components Key Digital certificate Certification Authority (CA) Key exchange methods Symmetric cryptography Asymmetric cryptography Internet Key Exchange FWZ 28 12 SUMMARY (CONTINUED) IPSec/IKE Encryption makes the contents of the packet unreadable Authentication ensures participating computers are authorized users Kerberos: strong authentication system VPN advantages High level of security at low cost VPN disadvantages Can introduce serious security risks 41 24 10 25 5 ENCRYPTION SCHEMES USED BY VPNS Triple Data Encryption Standard (3DES) Used by many VPN hardware and software 3DES is a variation on Data Encryption Standard (DES) DES is not secure 3DES is more secure Three separate 64bit keys to process data 3DES requires more computer resources than DES 30 WHY ESTABLISH A VPN? VPN combinations Combining VPN hardware with software adds layers of network security One useful combination is a VPN bundled with a firewall VPNs do not eliminate the need for firewalls Provide flexibility and versatility 13 FIREWALL CONFIGURATION FOR VPNS 37 Protocol...
Ngày tải lên: 17/09/2012, 10:44
Báo cáo y học: " High blood pressure, antihypertensive medication and lung function in a general adult population"
... antihypertensive medication and lung function. Cigarette smoking is a common risk factor for both impaired lung function and high blood pressure and BMI might have an effect on lung function. However, adjustment ... lung function. Nevertheless, this study has some possible limitation. Methodological bias might lead to insufficient lung function measurements. Thus in patients with high blood pressure lung function ... blood pressure, its treatment and lung function. Several pro- spective studies indicated that high blood pressure is a risk factor for reduced lung function as well as impaired lung function increases the risk...
Ngày tải lên: 25/10/2012, 10:45
ứng dụng hàm tách biệt (discriminant function) để phân loại cấp sinh trưởng cây rừng
... ép (Overtopped). 7 ỨNG DỤNG HÀM TÁCH BIỆT (DISCRIMINANT FUNCTION) ĐỂ PHÂN LOẠI CẤP SINH TRƯỞNG CÂY RỪNG THE USE OF DISCRIMINANT FUNCTION IN TREE GROWTH GRADING Nguyễn Văn Thêm Khoa Lâm ... nhiều nhà lâm học quan tâm. Bài báo này giới thiệu kết quả ứng dụng hàm tách biệt (Discriminant Function) để phân cấp sinh trưởng cây rừng dựa trên ba nhân tố định lượng là đường kính thân cây, ... Bảng 4 . Các hệ số của hàm phân loại hợp quy chuẩn hoá (Standardized Canonical Discriminant Function Coefficients) Hàm hợp quy chuẩn hoá Biến dự đoán 1 2 3 D1.3, cm 0,961 - 0,387 - 0,238...
Ngày tải lên: 30/10/2012, 16:53
Lỗi Virtual Memory
... hành bằng cách nhấn chuột phải vào My Computer > Properties > Advanced > Advanced > Virtual memory > Change. Có thể trò choi đó chiếm quá nhiều bộ nhớ RAM. Hiện nay, với WinXP,...
Ngày tải lên: 05/11/2012, 14:45
Significant substitutive figures of speech – linguistic functions and pedagogical implications part 1
Ngày tải lên: 07/11/2012, 14:24
Significant substitutive figures of speech – linguistic functions and pedagogical implications part 2
... or the old yet useful odd-man-out activity. 34 Sails Boat Gunwale II. METONYMY II.1. Linguistic functions of metonymy Among the substitutive figures of speech, metonymy is probably the most frequently ... language teaching, should contain recognizable examples illustrating these figures’ linguistic functions. They should be creative figures so as to highlight stylistic differences between uses ... better. 32 FOOD mea CHAPTER II SOME SIGNIFICANT SUBSTITUTIVE FIGURES OF SPEECH IN POETRY I. SYNECDOCHE I.1. Linguistic functions of synecdoche An adult native speaker of English may not remember how many times in his/her...
Ngày tải lên: 07/11/2012, 14:24
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