Distributed systems require the ability to communicate securely with other computers in the network. To accomplish this, most systems use key management schemes that require prior knowledge of public keys associated with critical nodes. In large, dynamic, anonymous systems, this key sharing method is not viable. Scribe is a method for efficient key management inside a distributed system that us...

In the last lecture, we discussed Reference Broadcast Synchronization, a mechanism which addresses the problem of energy-frugal μ-second precision time synchronization. The method involved synchronization between receivers based on the arrival time of a reference broadcast. The algorithm was extended to work on multiple domains as well, where nodes not in the same broadcast domain achieve this ...

In a game (N, 〈Si〉, 〈ui〉) players are interested in maximizing ui. In this section we consider games where players incur costs, and hence their goal is to minimize costs. These games are represented as (N, 〈Si〉, 〈ci〉) where ci is the cost function of player i. Recall that we defined a potential function to prove that a load balancing game had a pure Nash equilibrium. In this section we define a...

Abstract The application of protective layers is the primary method keeping metallic structures resistant to degradation. measurement layer resistance delamination one important indicators protection quality. Therefore, ISO 4628 standard has been issued handle and quantify main coating defects. Here, an innovative assessment degree around a scribe according practically realized. It utilizes com...

We are going to start a new topic today: Quorum system. The lexical meaning of the word Quorum is “the minimum number of members of a group that needs to be present at any of its meetings to make any decision for the group”. For example, majority is an example of a quorum for voting in a group. Majority is required in the voting system to avoid the partitioning and inconsistency in the decision...

This paper presents S ribe, a fun tional programming language for authoring do uments. Even if it is a general purpose tool, it best suits the writing of te hni al do uments su h as web pages or te hni al reports, API do umentations, et . Exe uting S ribe programs an produ e do uments of various formats su h as PostS ript, PDF, HTML, Texinfo or Unix man pages. That is, the very same program an ...

In the past lecture we introduced 3-player variants of both the CHSH and Magic Square games. These have the property that, even though from the point of view of classical players the new games are exactly as hard as the 2-player variants (ω(CHSH2) = ω(CHSH3) and ω(MS2) = ω(MS3)), for quantum players the 3-player variants proved much more challenging: we showed ω∗(CHSH3) = ω(CHSH3) < ω∗(CHSH2) a...

This paper presents S ribe, a fun tional programming language for authoring do uments. Even if it is a general purpose tool, it best suits the writing of te hni al do uments su h as web pages or te hni al reports, API do umentations, et . Exe uting S ribe programs an produ e do uments of various formats su h as PostS ript, PDF, HTML, Texinfo or Unix man pages. That is, the very same program an ...