aslan — a formal security specification language for distributed systems

... here, in a classical way, and which are detailed elsewhere [2] 4.1.1 Transition systems The labelled transition systems we use in this paper are Mealy automata An automaton A is a tuple A = Q, ... Delaval and E Rutten 11 s2 ∧ a3 s2 ∧ a3 ∧ a1 s1 a2 ∧ a1 s1 s2 ∧ a3 ∧ a1 a2 ∧ a1 a1 ∧ a3 s1 ¬s1 ∧ a2 a3 a3 ∧¬s1 a1 ∧ ¬s2 Err Err Err (a) Always t1 between (t2,t3) s2 s2 ∧ ¬s1 (b) Always t1 before ... control automaton can be constructed Each declared application has a name, and is launched on the occurrence of a signal req name The automaton of an application named A is shown in Figure 8 (a) On...

Ngày tải lên: 22/06/2014, 19:20

... for distributed computing • Chapter 1, On Patterns and Pattern Languages, outlines all aspects of the pattern and pattern language concepts that are relevant for understanding our pattern language ... For example, a pattern sequence defines a path through a language, taking in some or all of its patterns, and a pattern story recalls a route along one path 14 On Patterns and Pattern Languages ... 21 Database Access Database Access Layer ** Data Mapper ** Row Data Gateway ** Table Data Gateway ** Active Record 533 538 540 542 544 546 22 A Departing...

Ngày tải lên: 01/06/2014, 10:57

... Industrial Informatics, pp 294–300, Banff, Canada, September 2003 [7] S M Deen, Agent Based Manufacturing—Advances in the Holonic Approach, Advanced Information Processing, Springer, Berlin, Germany, ... the updated values of the data inputs SetCounterValue and CounterMax 4.2.3 FB—Engine 4.2.1 FB—AverageCont Both function blocks in Figure represent an average value calculator for one data point, ... 4.2.4 FB—StartUpChain Event Weight Old Value Real (b) IEC 61499 Figure 3: Function block for the average value Average := New Value; (a) INIT Average := (Weight Old Value Average + New Value)/...

Ngày tải lên: 22/06/2014, 19:20

... UWB is a technology for transmitting data spread over a large bandwidth (usually larger than 500 MHz) that shares among users UWB was traditionally applied in non-cooperative radar imaging Most ... increasing demands of high data transmission rate and reliable communication quality, channel estimation has become a necessary part in the OFDM system For example, the digital video broadcasting ... investigated, for both multipath Rayleigh channels and multipath Ricean channels The joint PDF of two arbitrary correlated Ricean random variables has been provided in an integral form (Chapter...

Ngày tải lên: 20/11/2012, 11:28

... Pennsylvania, Philadelphia, Pa., 1983 (Kaplan 79) Kaplan, S J., Cooperative responses from a portable natural language database query system Ph D dissertation, Univ of Pennsylvania,Philadelphia, Pa., ... whether natural language database systems still provide a valuable environment for natural language research is not a simple one As evidenced by the growing body of work on Gricean implicature and ... solving capabilities is being called o n Again, the system can use this information to avoid asking a question it would normally have to ask The use of natural language as an "overlay" on an underlying...

Ngày tải lên: 21/02/2014, 20:20

... with a formal model such as UML [CHA 05] Unfortunately UML is not intended to have an operational semantic and this feature is required for the analysis of distributed systems In particular, a formal ... M A, “MeFoSyLoMa, home-page”, www.mefosyloma.fr 2011 This acronym stands for Formal Methods for Software and Hardware Systems (in French) Laboratoire d’Informatique de Paris Laboratoire d’Informatique ... represented using a data specification language This language can either be dedicated to the kind of model [AMI11], a programming language [CPN11], or an abstract data type specification [REI 91]...

Ngày tải lên: 24/04/2014, 15:35

... management, database maintenance and query management; At application layer, users can manage database through not only interactive ways but also command mode a Management Strategy of Database Access ... Scripting Attack 2.2 Database security threats Database security relates to two parts: data visiting and data recovery The first part can be realized by using a suitable authorization to make sure that ... database, obtaining secret information and users data, controlling database and server system occur   Speculating table name and field name Attackers take advantage of SQL statement, such as...

Ngày tải lên: 27/06/2014, 00:20

... management, database maintenance and query management; At application layer, users can manage database through not only interactive ways but also command mode a Management Strategy of Database Access ... Scripting Attack 2.2 Database security threats Database security relates to two parts: data visiting and data recovery The first part can be realized by using a suitable authorization to make sure that ... database, obtaining secret information and users data, controlling database and server system occur   Speculating table name and field name Attackers take advantage of SQL statement, such as...

Ngày tải lên: 27/06/2014, 00:20

... doctoral dissertation [6] A preliminary version of this article appeared as a poster at the 2005 International Conference on Formal Power Series and Algebraic Combinatorics in Taormina, Italy The author ... determinantal method to calculate #APn , the sequence of determinants is not calculable by a J-factor expansion, as was the case in Brualdi and Kirkland’s work Using the same method as for Aztec diamonds, ... some walk of Wm either at vi , at wk+i, or both So there are four cases: Case ci intersects a walk cχβ at vi and no walk at wk+i Case ci intersects a walk cχγ at wk+i and no walk at vi Case ci...

Ngày tải lên: 07/08/2014, 13:21

... Magnitude of Duffing oscillator Baseband models are a low-pass waveform representation of passband waveforms The passband waveforms are characterized by a narrow frequency spectrum around a carrier ... f and Re gives access to the real part of a complex number All the waveforms x, A, f, I, and Q are scalar real-valued time-continuous waveforms A special waveform x(t) is characterized by a tupel ... especially for practically relevant analog components Due to that fact such a behavioral description of analog components is not suitable for the practical application of formal verification...

Ngày tải lên: 08/03/2016, 11:20

... computers for financial gain professional criminals - attackers who attack computers for personal financial gain vandals - attackers who attack computers to cause damage 15 incident attack(s) (s) Attackers ... actually take place during an event For example, when a user logs in to an account, we classify the action as authenticate and the target as account The actual action that takes place is for the ... data storage device, or in the form of data in transit across a transmission medium data in transit – data that are being transmitted across a network, or otherwise emanating from a source Examples...

Ngày tải lên: 14/02/2014, 08:20

... stratagem, or contrivance used to accomplish an immediate objective in a classroom A method is an overall plan for the orderly presentation of language material An approach is a set of correlative ... role play, etc 1.3 Communicative Language Teaching 1.3.1 Definition According to American and British proponents, Communicative Language Teaching is an approach that aims to (a) make communicative ... became so popular 5 • The Functional-Notional Approach In the 1970s teachers of the Functional-Notional Approach stopped teaching grammar and started teaching more practical phrases and vocabulary...

Ngày tải lên: 07/11/2012, 14:41

... VIET NAM NATIONAL UNIVERSITY, HANOI COLLEGE OF FOREIGN LANGUAGES POST GRADUATE STUDIES DEPARTMENT TRẦN QUỐC VIỆT A STUDY ON THE TECHNIQUES FOR THE IMPROVEMENT TO THE TEACHING OF ORAL SKILLS ... COMMUNICATIVE ENGLISH LANGUAGE TEACHING FOR JUNIOR HIGH SCHOOL TEACHERS IN QUẢNG NGÃI PROVINCE (NGHIÊN CỨU CÁC THỦ THUẬT NÂNG CAO VIỆC DẠY KỸ NĂNG NGHE NÓI TIẾNG ANH THEO ĐƯỜNG HƯỚNG GIAO TIẾP ... TIẾNG ANH THEO ĐƯỜNG HƯỚNG GIAO TIẾP CHO GIÁO VIÊN TRUNG HỌC CƠ SỞ TẠI TỈNH QUẢNG NGÃI) M .A. THESIS HA NOI-2007 ...

Ngày tải lên: 07/11/2012, 14:41

... Tấn Bảo and my colleagues of Foreign Languages Department, Quang Ngai Teachers Training College for their attention and encouragement I am appreciative of all those who have kindly advised and helped ... deep gratitude to all my teachers at College of Foreign Languages, Vietnam National University-Hanoi for their valuable lectures And their knowledge, their thoughtfulness as well as their sympathy ... ABBREVIATIONS • BA : Bachelor of Arts • : Communicative Language Teaching CLT • DES : District Education Service • ELT : English language teaching • JHS : Junior High School • TJC : Teachers Training...

Ngày tải lên: 07/11/2012, 14:41

... stratagem, or contrivance used to accomplish an immediate objective in a classroom A method is an overall plan for the orderly presentation of language material An approach is a set of correlative ... role play, etc 1.3 Communicative Language Teaching 1.3.1 Definition According to American and British proponents, Communicative Language Teaching is an approach that aims to (a) make communicative ... became so popular 5 • The Functional-Notional Approach In the 1970s teachers of the Functional-Notional Approach stopped teaching grammar and started teaching more practical phrases and vocabulary...

Ngày tải lên: 07/09/2013, 13:06

... on Haiphong Foreign Language Center Haiphong Foreign Language Center (HFLC) was established in 1976 and has become a reliable address for those who are eager to learn foreign languages In this ... reading habit, here below are some principles to keep in mind • The reading material is easy Learners read materials that contain few or no unfamiliar items of vocabulary and grammar Learners at ... reading Chapter two elaborates the analysis of current situation of teaching and learning reading at Haiphong Foreign Language Center - Haiphong University Time and efforts have been spent on accumulating...

Ngày tải lên: 29/01/2014, 10:43

... Chapter two: An Investigation into the Current Situation of Teaching and Learning Reading at Haiphong Foreign Language Center – Haiphong University 2.1 An Overview on HFLC 2.2 Learners and Learning ... Appropriate Supplementary Reading Materials Part three: Conclusion Recapitulation Limitations and Suggestions for Further Studies Varying strategies to aid the students in three phases of a reading ... lesson At Pre-reading Phase: Teachers should: Establish a reason for students to read Establish the context Activate existing cultural knowledge Express an attitude/opinion in relation to...

Ngày tải lên: 29/01/2014, 10:49

... implemented as a ∧ b, and a+ b as a ∨ b The Dyna programmer can declare the agenda discipline—i.e., the order in which updates are processed—to obtain variant algorithms Although Dyna supports stack and ... partial hypotheses are assembled, or where consistency has to be maintained It is already being used for parsing, syntax-based machine translation, morphological analysis, grammar induction, and ... permitted axioms may have values between and 1.8 C++ Interface and Implementation A Dyna program compiles to a set of portable C++ classes that manage the items and perform inference These classes can...

Ngày tải lên: 20/02/2014, 16:20

... constants ma y n o t h a v e translations We s p e a k therefore of t h e d a t a b a s e constituting a "partially specified model" for the meaning representation language C o m p u t a t i ... stipulations for a n y use of the language in a given domain First, a n y o n e - p l a c e predicate m u s t n a m e a concept, a n d a n y t w o - p l a c e predicate n a m e a role Second, any ... example, they can now appear as predicate l e t t e r s in meaning representations Moreover, to the associated data s t r u c t u r e we can attach a t r a n s l a t i o n rule, just as w e have...

Ngày tải lên: 21/02/2014, 20:20