a foundation for information security

... communicating, or managing the organization’s information and information processing facilities Other information Information might be put at risk by external parties with inadequate security management ... identifies that the organization’s approach and implementation to managing information security is inadequate or not compliant with the direction for information security stated in the information security ... other organizations Other Information Labeling and secure handling of classified information is a key requirement for information sharing arrangements Physical labels are a common form of labeling...

Ngày tải lên: 21/02/2014, 10:20

... communicating, or managing the organization’s information and information processing facilities Other information Information might be put at risk by external parties with inadequate security management ... identifies that the organization’s approach and implementation to managing information security is inadequate or not compliant with the direction for information security stated in the information security ... other organizations Other Information Labeling and secure handling of classified information is a key requirement for information sharing arrangements Physical labels are a common form of labeling...

Ngày tải lên: 17/03/2014, 13:20

... confidential data, but where security- typed languages can be used: A home user wants a guarantee that accounting software, which needs access to both personal financial data and a database of information ... was given for this approach, partly due to a lack of a formal characterization of what it means for a program to be insecure Goguen and Meseguer addressed this problem of formalizing information- security ... These information flows arise for many reasons: Explicit flows are information channels that arise from the ways in which the language allows data to be assigned to memory locations or variables...

Ngày tải lên: 19/03/2014, 13:41

... a particular syntactic category, such as proper noun or adverb, Montague was able to say that the meaning of a constituent of that category was a semantic object of such and such a type Montague's ... is clearly unchanged, s AA-57 departs from Boston depart (aa-57, bos~on) A. A-57 departs from Boston to Chicago conltecT, (aa-5T, besT,on chicago) AA-57 departs from Boston on Monday dday (aa-57, ... (1967 :A4 4): AA-57 departs from Boston after 8:00am greater (dtime (aa-5T, boston), 8:00am) A. A-57 departs from Boston before 8:00am greater (8:00am, dtlme (aa-5T boston)) Although Montague semantics has...

Ngày tải lên: 31/03/2014, 17:20

... of approximation is called ‘the midpoint rule’ for calculating an approximate value of the area A Numerical integration (or numerical quadrature) is a whole subject devoted to calculating areas ... Delhi Shanghai Taipei Toronto With offices in Argentina Austria Brazil Chile Czech Republic France Greece Guatemala Hungary Italy Japan Poland Portugal Singapore South Korea Switzerland Thailand Turkey ... Evaluate a b if a = ay and b = bx y (d) The aim of this part is to convince you that just as in normal algebra where a( b + c) = ab + ac, with scalar products a · (b + c) = a · b + a · c Look at...

Ngày tải lên: 10/06/2014, 22:31

... respectively that ca-1 + cao + cal = c (a- j faofal); instead commutative? (associative law) a- 1 + a0 + al = al + a0 + a- 1 of (distributive law) (a- 1 Sb-1) + (ao+b) + (al +bl) = (a- l+ao+al)+(b-l+bo+bl); ... Concrete Ma the- matics is a bridge to abstract mathematics “The advanced reader who skips parts that appear too elementary may miss more than the less advanced reader who skips parts that appear too ... a mathematician with excellent handwriting A handwritten rather than mechanical style is appropriate because people generally create mathematics with pen, pencil, PREFACE ix or chalk (For example,...

Ngày tải lên: 14/08/2014, 04:21

... ‘mod’ as a binary operation, just as addition and subtraction are binary operations Mathematicians have used mod this way informally for a long time, taking various quantities mod 10, mod 277, and ... when all terms are nonnegative, because we can prove the general case by breaking everything into real and imaginary, positive and negative parts as before Let’s assume therefore that oi,k for all ... warrant giving them special symbols, just as we have adopted special notations for rising powers as well as falling powers Mathematicians have long had both sine and cosine, tangent and cotangent,...

Ngày tải lên: 14/08/2014, 04:21

... mathematical formulas that are easy to deal with? A bit of experimentation suggests that the best way is to maintain a x matrix that holds the four quantities involved in the ancestral fractions ... congruences are almost like equations For example, congruence is an equivalence relation; that is, it satisfies the reflexive law a = a , the symmetric law a b =$ b E a , and the transitive law a E ... nm possible patterns appears at least once in this array of mN(m,n) strings, and some patterns appear more than once How many times does a pattern a~ a, ,-, appear? That’s easy: It’s the number...

Ngày tải lên: 14/08/2014, 04:21

... the air The hats come back randomly, one hat to each of the n fans How many ways h(n, k) are there for exactly k fans to get their own hats back? For example, if n = and if the hats and fans are ... named A, B, C, D, the 4! = 24 possible ways for hats to land generate the following numbers of rightful owners: ABCD ABDC ACBD ACDB ADBC ADCB 2 1 BACD BADC BCAD BCDA BDAC BDCA 0 CABD CADB CBAD ... because the polynomial a0 -t al k + + a, kn can always be written as a Newton series CO(~) + cl (F) -t + c,(E) with c, = n! a, Many sums that appear to be hopeless at first glance can actually...

Ngày tải lên: 14/08/2014, 04:21

... drone has one grandfather and one grandmother; he has one greatgrandfather and two great-grandmothers; he has two great-great-grandfathers and three great-great-grandmothers In general, it is easy ... induction that he has exactly Fn+l greatn-grandpas and F,+z greatn-grandmas Fibonacci numbers are often found in nature, perhaps for reasons similar to the bee-tree law For example, a typical sunflower ... name We have, for example, a0 + 1 a1 + ~ a2 + G = K(ao,al,az ,a3 ) -K(al,az ,a3 ) ' (6.135) The same pattern holds for continued fractions of any depth It is easily proved by induction; we have, for...

Ngày tải lên: 14/08/2014, 04:21

... following problem: How many sequences (al ,a2 , al,,) of +1's and -1's have the property that al + a2 + + azn = and have all their partial sums al, al +a2 , al +a2 + +aZn nonnegative? There must be ... for rational functions tells us that the answer can be obtained from a partial fraction representation We can use the general expansion theorem (7.30) and grind away; or we can use the fact that ... the pattern.) There is no closed form for p(n), but the theory of partitions is a fascinating branch of mathematics in which many remarkable discoveries have been made For example, Ramanujan proved...

Ngày tải lên: 14/08/2014, 04:21

... space, and we want to estimate the mean of a random variable X by sampling its value repeatedly (For exa.mple, we might want to know the average temperature at noon on a January day in San Francisco; ... person is reassigned to an adjacent state, each adjacent state being equally likely (Here’s a diagram of the adjacencies: The initial states are circled.) For example, Alice is restationed after the ... mean and variance are 36 and 996 Let’s get general: The problem we have just solved was “random” enough to show us how to analyze the case that we are waiting for the first appearance of an arbitrary...

Ngày tải lên: 14/08/2014, 04:21

... Stirling’s approximation behaves for generalized factorials (and for the Gamma function r( a + 1) = a! ) exactly as for ordinary factorials Summation 4: A bell-shaped summand Let’s turn now to a sum that ... formula does give us O(n mP1 ) for arbitrarily large m, even though we haven’t evaluated any remainders explicitly Summation 1, again: Recapitulation and generalization Before we leave our training ... But in practice, we have no reason to believe that an adversary is trying to trap us, so we can assume that the unknown O-constants are reasonably small With a pocket calculator we find that S4...

Ngày tải lên: 14/08/2014, 04:21

... aa2 -a a+ aa -a2 +a+ a > 0, which is a consequence of aa( a - a) + (1 + a) a ( + a) a > a2 - a Hence we can replace x, and a by a - and (3, repeating this transformation until cases or apply Another ... we have al ,a2 ,a3 , (al - a2 1 F = alF am bl, , bn al+l ,a2 ,a3 , ,am bl, , b, al ,a2 +l ,a3 , ,am 13 -wF( 514 ANSWERS TO EXERCISES because al - a2 = (a1 + k) -~ (al + k) If al - bl is a nonnegative ... present at the end of a month becomes a pair of adults aa at the end of the next month; and each pair aa becomes an The Fibonacci recurrence is additive, but the rabbits are multiplying A ANSWERS...

Ngày tải lên: 14/08/2014, 04:21

... Frederick V Waugh and Margaret W Maxfield, “Side-and-diagonal numbers,” Mathematics Magazine 40 (1967), 74-83 279 298 Warren Weaver, “Lewis Carroll and a geometrical paradox,” American Mathematical Monthly ... 135 Samuel L Greitzer, International Mathematical Olympiads, 1959-1977 Mathematical Association of America, 1978 602 136 Oliver A Gross, “Preferential arrangements,” American Mathematical 604 ... Paul R Halmos, I Want to Be a Mathematician: An Automathography Springer-Verlag, 1985 Reprinted by Mathematical Association of America, 1988 v 143 G H Halphen, “Sur des, suites de fractions analogues...

Ngày tải lên: 14/08/2014, 04:21

... designers can accommodate by arranging for slack storage within the network infrastructure plan Multi-fiber ribbon cables are gaining popularity as a valuable way to increase density per line card Without ... cables, but also reduces signal attenuation and enables service providers to realize fiber’s competitive advantage Most new-world equipment platforms feature modular line cards designed to ease ... connectivity Each time a new line card is added or upgraded, it is not uncommon to require substantial connectivity changes For example, to upgrade a line card, as many as to 16 connections may need...

Ngày tải lên: 04/12/2015, 03:52

... designated certifications Healthcare industry and HIPAA (Health Insurance Portability and Accountability Act): This 1996 Congressional Act requires standards be met regarding the security and privacy ... tools available, like IDS and firewalls, and how to repair damaged networks after a threat has been discovered These abilities are a must for all Network Engineers and System Administrators When ... this act is to verify certification of their network and information security staff Financial industry and web-based attacks: The financial industry and its customers are vulnerable to attacks...

Ngày tải lên: 21/12/2013, 06:18

... Manage, Design Regulatory and Standards Compliance: Manage, Evaluate Security Risk Management: Manage, Evaluate Strategic Security Management: Manage, Design, Evaluate System and Application Security: ... (IAM) Information Assurance Security Officer (IASO) Information Security Officer (ISO) Information Security Program Manager Information Systems Security Manager (ISSM) Information Systems Security ... Manage Physical and Environmental Security: Manage, Evaluate Procurement: Manage, Design, Evaluate Regulatory and Standards Compliance: Manage, Design, Evaluate Security Risk Management: Manage,...

Ngày tải lên: 28/03/2014, 20:20

... determined, and a detailed description of the facts found, as well as an evaluation of each fact for each safeguard tested Part This part contains the organisational information, for example the basis ... Association (ISACA), and international organisations such as the International Auditing and Assurance Standards Board (IAASB) or the Institute of Internal Auditors (IIA) These publications take ... used For this reason, information security is a must for everyone today For companies and government agencies, this means, among other things, that an appropriate information security management...

Ngày tải lên: 29/03/2014, 22:20

... security for databases, authentication and authorization issues, links and replication, database Trojans, and more You will also learn of vulnerabilities and attacks that exist within various database ... the database have many security and auditing features? Isn’t a database merely a file system with a set of value-added services such as transaction management and security? Isn’t my database secure? ... Chapter that there is more than one way to skin a cat and that databases are far more exposed than they used to be Ten years ago the database was accessed by applications that were only available...

Ngày tải lên: 01/06/2014, 09:49