Alan Caulkins
CS-6310, Assignment #9
11/13/2017
Part 1: For this assignment, two design patterns will be covered: Observer and Visitor.
Pattern #1, Observer:
This design pattern provides a mechanism for one-to-many communication
between an entity acting as an information source, called the “subject”, and any number
of receiving entities, called “observers”. The pattern is also known by the the more
descriptive name “publish-subscribe”. The advantage of this pattern is that the developer
of the subject doesn’t need to know what or how many observers will be used ahead of
time. The number of observers can be determined at run time, or at a time well after the
subject has been written. This pattern allows observing entities to be added without
coupling them to the subject or requiring the author of the subject to know about them
ahead of time. The pattern is useful in situations where a (possibly unknown) number of
independent aspects of a system depend simultaneously on an object and need to be
informed of changes to it.
Pattern #2, Visitor:
This design pattern provides a mechanism for executing different operations on
nodes in a data structure, determined by node type or class. The advantage of this pattern
is that the operations don’t have to be known to the nodes, and the node classes are not
coupled to the operations. The Visitor class contains the different versions of a given
operation for all of the node types and an arbitrary number
The latest action on this bill was made by House Education and the Workforce on April 29, 2015. The type of action was Committee Consideration.
Matthew is a conscientious, hard-working student. He has been very dedicated this year to learning each topic in the course especially programming. This level of commitment will no doubt give great dividends in the future. He is very good at meeting deadlines, and he always does his work to a high standard. All he needs now to gain endorsement in this subject is complete the externally marked Computer Science report to a high standard.
In 1996 the largest population consisted of people aged 30-50, there were not as many people in the dependency load. In 2011, there were more people aged 40-65, who are getting close to retirement. There are not as many babies being born today as previous years because people are choosing to not have as many children. The baby boomers are getting older and there will soon be more people in the dependency load as the workforce. In 2011 there were more people ages 85 and up because nowadays people have been able to live longer.
The game was about the following direction while creating different shapes using mathematical concepts such as lines, left and right. I had to create figures with blocks as I moved along. There were several sections that I had to complete. Each section was getting a little more complicated to accomplish because there were more steps to follow. You can say that we had to use algorithms because we had to follow a process to problem solve. I had to read and know which direction I would choose so that my character would finish their task. In order to pass to the next level, you were supposed to finish the first puzzle or section that you were on. The game that I had did not provide hints like the first one that I tried. The game had a lot of repetition which provided a choose for several turns in one.
Flexible single master operation (FSMO) Roles should be assigned to ensure the best recoverability and operation of your Domain Controllers.
to do the specific task. It has a node structure which contains integer data, pointers for next node and previous node of doubly linked list. It has a Head node
It involves a reference to a sequence of steps or events and the allotted time for each one.
“What?! Why won't you work!” I sighed in frustration, pushing my hand over my face desperately. It was 1:32 am, and I still hadn't completed my computer programming assignment. After countless stack overflow errors and simple compiling problems, I was about ready to give up and submit the broken code that lay before me. The assignment was about recursion, where a program calls its own method on itself to solve a problem. However, my program wasn’t working as it should, and I felt the computer was freaking out as well. Taking a step back, I analyzed my code from a different perspective, hoping to see the problem. What I needed to do, was think outside the box. After tiredly researching previous recursion problems and observing their reasons
The hierarchical typical structure has levels which shows one –to – many also relationship between a parent and children divisions. The main key this models which following by each parent can have many children as well each child has simply one parent.
The second type of design pattern is the structural pattern. Structural patterns provide a manner to define relationships between classes or objects.
This Schema type on uses attributes and elements and follows a hierarchy in structure type. It is very simplistic and uses few attribute definitions, and does not follow XML type syntax. However, despite its simplistic nature, it is the most widely used standard according to Lee and Chu (2000).
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n distributed system, state of the system continuously changes. So any fault fromany state that propagates with time is hard to track among the continuous changes ofthe system. To reason about changes in a distributed system’s state Wenchao Zhouet al proposed a novel provenance model called Distributed Time-aware Provenance(DTaP) to aid debugging by explicitly representing time, distributed state, and statechanges[17]. For this reasonDTaPneeds to continuously process, update and syn-chronize. Changes or provenance can be stored proactively or reactively. In proactiveapproach provenance information are logged, so it can quickly answer to any querymade. However in case of reactive approach only non-deterministic events (such asreceived
• Clustering: Hierarchical clustering groups patterns into a set of clusters which are in the form of a hierarchy.
At the finest level view, the most intermittently occurring namespaces are displayed, with edges linking that are ordinarily connected. Each namespace is shown as a nodule and labeled with its shorthand URI and a number indicts the number of times that an instance is defined as belonging to a class of this namespace. Between two namespaces the user can have the mouse pointer over the arrowhead of an edge to view the number of links between occurrences belonging to classes of relevant namespaces. In order to view the corresponding class level map the user can click on the shorthand URI of a namespace