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  #1  
قديم 13-06-2007, 04:19 PM
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Thumbs up Problem solving

Brainstorming

What is Brainstorming?Brainstorming is a method for developing creative solutions to problems. It works by focusing on a problem, and then deliberately coming up with as many deliberately unusual solutions as possible and by pushing the ideas as far as possible.
One approach to brainstorming is to 'seed' the session with a word pulled randomly from a dictionary. This word as a starting point in the process of generating ideas.

During the brainstorming session there is no criticism of ideas - the idea is to open up as many possibilities as possible, and break down preconceptions about the limits of the problem.

Once this has been done the results of the brainstorming session can be analysed and the best solutions can be explored either using further brainstorming or more conventional solutions.


How to BrainstormThe following rules are important to brainstorming successfully:

A leader should take control of the session, initially defining the problem to be solved with any criteria that must be met, and then keeping the session on course. He or she should encourage an enthusiastic, uncritical attitude among brainstormers and encourage participation by all members of the team. The session should be announced as lasting a fixed length of time, and the leader should ensure that no train of thought is followed for too long. The leader should try to keep the brainstorming on subject, and should try to steer it towards the development of some practical solutions.
Participants in the brainstorming process should come from as wide a range of disciplines with as broad a range of experience as possible. This brings many more creative ideas to the session.
Brainstormers should be encouraged to have fun brainstorming, coming up with as many ideas as possible, from solidly practical ones to wildly impractical ones in an environment where creativity is welcomed.
Ideas must not be criticised or evaluated during the brainstorming session. Criticism introduces an element of risk for a group member in putting forward an idea. This stifles creativity and cripples the free running nature of a good brainstorming session.
Brainstormers should not only come up with new ideas in a brainstorming session, but should also 'spark off' from associations with other people's ideas and develop other peoples ideas.
A record should be kept of the session either as notes or a tape recording. This should be studied subsequently for evaluation. It can also be helpful to jot down ideas on a board which can be seen by all brainstormers.

Individual vs. group brainstormingBrainstorming can either be carried out by individuals, groups or both:
Individual brainstorming tends to produce a wider range of ideas than group brainstorming, but tends not to develop the ideas as effectively, perhaps as individuals on their own run up against problems they cannot solve. Individuals are free to explore ideas in their own time without any fear of criticism, and without being dominated by other group members.
Group brainstorming develops ideas more deeply and effectively, as when difficulties in the development of an idea by one person are reached, another person's creativity and experience can be used to break them down. Group brainstorming tends to produce fewer ideas (as time is spent developing ideas in depth) and can lead to the suppression of creative but quiet people by loud and uncreative ones.
Individual and group brainstorming can be mixed, perhaps by defining a problem, and then letting team members initially come up with a wide range of possibly shallow solutions. These solutions could then be enhanced and developed by group brainstorming.
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  #2  
قديم 13-06-2007, 04:23 PM
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Critical Path AnalysisCritical Path Analysis is an extremely effective method of analysing a complex project. It helps you to calculate the minimum length of time in which the project can be completed, and which activities should be prioritised to complete by that date.
Where a job has to be completed on time, critical path analysis helps you to focus on the essential activities to which attention and resources should be devoted. It gives an effective basis for the scheduling and monitoring of progress.


Sequential and parallel activitiesThe essential concept behind Critical Path Analysis is that some plan activities are dependent on other activities being completed first. For example, you should not start building a bridge unless you have designed it first!
These dependent activities need to be completed in a sequence, with each activity being more-or-less completed before the next activity can begin. Dependent activities are also called 'sequential' activities.

Other activities are not dependent on completion of any other tasks, or may be done at any time before or after a particular stage is reached. These are non-dependent or 'parallel' tasks.


Method
The process of carrying out a critical path analysis is shown below:
List all activities in plan
Show the earliest start date, estimated duration and whether the tasks are parallel or sequential. If the tasks are sequential, show what they depend on.
This will show a task list like them one below (simplified custom written computer installation):

NB: Start week shows purely when resources become available. Whether a
task is parallel or sequential depends largely on context.

1. High level analysis
start week 1, 5 days, sequential
2. Selection of hardware platform
start week 1, 1 day, sequential,
dependent on (1)
3. Installation and commissioning of hardware
start week 3, 2 weeks, parallel
dependent on (2), any time after
4. Detailed analysis of core modules
start week 1, 2 weeks, sequential
dependent on (1)
5. Detailed analysis of supporting utilities
start week 1, 2 weeks, sequential
dependent on (4)
6. Programming of core modules
start week 4, 3 weeks, sequential
dependent on (4)
7. Programming of supporting modules
start week 4, 3 weeks, sequential
dependent on (5)
8. Quality assurance of core modules
start week 5, 1 week, sequential
dependent on (6)
9. Quality assurance of supporting modules
start week 5, 1 week, sequential
dependent on (7)
10.Core module training
start week 7, 1 day, parallel
dependent on (6), any time after
11.Development of accounting reporting
start week 6, 1 week, parallel
dependent on (5), any time after
12.Development of management reporting
start week 6, 1 week, parallel
dependent on (5), any time after
13.Development of management analysis
start week 6, 2 weeks
dependent on (5), any time after
14.Detailed training
start week 7, 1 week, sequential
dependent on (1-13)
15.Documentation
start week 4, 2 weeks, parallel



Head up graph paper with the days or weeks through to task completion


Plot the tasks on the graph paper
Start on the earliest start dates, and mark on the duration. Show the tasks as arrows, and the ends of tasks with dots. Above the tasks arrows, mark the time taken to complete the task. Do not worry about task scheduling yet - all we are doing is setting up the first draft of the analysis.
Once you have plotted the tasks, plot in lines to show dependencies.

This will produce an untidy draft analysis like the one below:



Schedule Activities
Take the draft analysis, and use it to schedule the actions in the plan, in such a way that sequential actions are carried out in the required sequence. Parallel actions should be scheduled so that they do not interfere with sequential actions on the critical path, if possible.
While scheduling, bear in mind the resources you have available, and allow some slack time in the schedule for hold-ups, over-runs, failures in delivery, etc.
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  #3  
قديم 13-06-2007, 04:26 PM
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أختى الفاضلة كونزيت لا أعرف ماذا يحدث أشياء تنزل يمين واشياء يسار لا أدرى ماذا أفعل؟؟؟؟

لى عودة ان شاء الله
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سأغيب وقد يطول غيابى
فان طال
فتذكّرونى بالخير
وسامحونى على التقصير والذلل
وان عدت فترقبونى فى حلّة جديدة

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  #4  
قديم 14-06-2007, 02:47 PM
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إقتباس:
المشاركة الأصلية بواسطة عاشق القمر
أختى الفاضلة كونزيت لا أعرف ماذا يحدث أشياء تنزل يمين واشياء يسار لا أدرى ماذا أفعل؟؟؟؟

لى عودة ان شاء الله


المهم أن المضمون ثابت أخي عاشق القمر

تحدث مشكلة الترقيم معي أيضاً أخي عاشق فعندما أبدأ الكتابة برقم فإنه يظهر بالعربي وإذا كتبت في نفس السطر مبتدأة بكلمة ثم وضعت الرقم فهو يظهر باللغة الإنجليزية.
g 2

1

إذا كنت تحب أن أجرب تنسيق كتابتك مجدداً فسأحاول .
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قديم 14-06-2007, 04:48 PM
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جزيتى عنّى خيرا

هناك بقيه
ان شاء الله انزلها
وبعدين نحاول نصلحه كله
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سأغيب وقد يطول غيابى
فان طال
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  #6  
قديم 15-06-2007, 12:44 PM
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Presenting the Analysis
The final stage in this process is to prepare a clean final copy of the analysis. This should combine the draft analysis (see above) with your scheduling and analysis of resources to show when you anticipate that jobs should start and finish.
There are two formats for this clean copy. The choice of the most effective form of presentation comes down to the circumstances of the analysis and personal taste.

Gantt Charts
A redrawn and scheduled version of the analysis above is shown below, in the format of a modified Gantt chart:




Here time is marked out in columns across the chart, with individual tasks represented as arrows terminating at dots. The length and positions of the arrows show the start date and duration of the tasks.

You may prefer to show tasks in pure Gantt format, as solid bars rather than arrows terminating in dots. Similarly you may prefer not to show the linkages between related tasks - this is a matter of personal taste and personal convention.

The Critical Path is the longest sequence of dependent activities that lead to the completion of the plan. Any delay of a stage in the critical path will delay completion of the whole plan unless future sequential activities are speeded up.


PERT Charts
PERT stands for Programme Evaluation and Review Technique. Here circles represent completion of tasks, with linking lines showing the time taken to achieve the tasks. The critical path for the project is shown as the horizontal series of tasks.
Note that in the diagram below we are using dotted lines to link completed tasks back to the appropriate stages of the critical path. These lines serve to tidy the diagram and do not represent tasks to be carried out. This diagram shows our example critical path analysis in PERT format:




Carrying out the example critical path analysis above shows us:

That if all goes well the project can be completed in 10 weeks
That if we want to complete the task as rapidly as possible, we need:
1 analyst for the first 5 weeks
1 programmer for 6 weeks starting week 4
1 programmer for 3 weeks starting week 6
Quality assurance for weeks 7 and 9
Hardware to be installed by the end of week 7
That the critical path is the path for development and installation of supporting modules
That hardware installation is a low priority task as long as it is completed by the end of week 7
Summary
Critical Path Analysis is an effective and powerful method of assessing:
Tasks which must be carried out
Where parallel activity can be carried out
The shortest time in which a project can be completed
Resources needed to achieve a project
The sequence of activities, scheduling, and timings involved
Task priorities
etc.
An effective critical path analysis can make the difference between success and failure on complex projects, and can be an effective tool for assessing the importance of problems faced during the implementation of the plan.
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  #7  
قديم 15-06-2007, 12:48 PM
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Decision Theory and Decision Trees
Decision trees are excellent tools for making financial or number based decisions where a lot of complex information needs to be taken into account. They provide an effective structure in which alternative decisions and the implications of taking those decisions can be laid down and evaluated. They also help you to form an accurate, balanced picture of the risks and rewards that can result from a particular choice.

How to Draw a Decision Tree
You start a decision tree with a decision that needs to be made. This decision is represented by a small square towards the left of a large piece of paper. From this box draw out lines towards the right for each possible solution, and write that solution along the line. Keep the lines apart as far as possible so that you can expand your thoughts.
At the end of each solution line, consider the results. If the result of taking that decision is uncertain, draw a small circle. If the result is another decision that needs to be made, draw another square. Squares represent decisions, circles represent uncertainty or random factors. Write the decision or factor to be considered above the square or circle. If you have completed the solution at the end of the line, just leave it blank.

Starting from the new decision squares on your diagram, draw out lines representing the options that could be taken. From the circles draw out lines representing possible outcomes. Again mark a brief note on the line saying what it means. Keep on doing this until you have drawn down as many of the possible outcomes and decisions as you can see leading on from your original decision.

An example of the sort of thing you will end up with is shown below:




Once you have done this, review your tree diagram. Challenge each square and circle to see if there are any solutions or outcomes you have not considered. If there are, draw them in. If necessary, redraft your tree if parts of it are too congested or untidy.

You should now have a good understanding of the range of possible outcomes.


Starting to Evaluate Your Decision Tree
Now you are ready to evaluate the decision tree. This is where you can calculate the decision that has the greatest worth to you. Start by assigning a cash or numeric value to each possible outcome - how much you think it would be worth to you.
Next look at each circle (representing an uncertainty point) and estimate the probability of each outcome. If you use percentages, the total must come to 100% at each circle. If you use fractions, these must add up to 1. If you have data on past events you may be able to make rigorous estimates of the probabilities. Otherwise write down your best guess.

This will give you a tree like the one below:



Note that the tree looks less confused when different colours are used for numbers than for the structure of the tree.


Calculating Tree Values
Once you have worked out the value of the outcomes, and have assessed the probablity of the outcomes of uncertainty, it is time to start calculating the values that will help you make your decision.
We start on the right hand side of the decision tree, and work back towards the left. As we complete a set of calculations on a node (decision square or uncertainty circle), all we need to do is to record the result. All the calculations that lead to that result can be ignored from now on - effectively that branch of the tree can be discarded. This is called 'pruning the tree'.


Calculating The Value of Uncertain Outcome Nodes
Where we are assessing the value of an uncertain outcomes (circles on the diagram), we do this by multiplying the value of the outcomes by their probability, and noting the result. The total value of that node of the tree is gained by adding these together.
In the example above, the value for 'new product, thorough development' is:


0.4 (probability good outcome) x $500,000 (value) = $200,000
0.4 (probability moderate outcome) x $25,000 (value) = $10,000
0.2 (probability poor outcome) x $1,000 (value) = $200
--------
$210,200

This is shown across our example tree in the diagram below:



Note that the values calculated for each node are shown in the boxes.

Calculating The Value of Decision Nodes
When you are evaluating a decision node, write down the cost of each option along each decision line. Then subtract the cost from the value of that outcome that you have already calculated. This will give you a value which represents the benefit of that decision.
Sunk costs, amounts already spent, do not count for this analysis.

When you have calculated the benefit of each decision, select the decision which has the largest benefit, and take that as the decision made and the value of that node.

Calculation of decision nodes in our example is shown below:



In this example, the benefit we previously calculated for 'new product, thorough development' was $210,000. This example shows that we calculate the cost of this approach as $75,000. This gives a net benefit of $135,000. The benefit of 'new product, rapid development' was $15,700. On this branch we therefore choose the most valuable option, 'new product, thorough development', and allocate this value to the decision node.


Result
By applying this technique we can see that the best option for us may be to develop a new product. What the analysis shows which we might not have appreciated, is that it is worth much more to us to take our time and get the product right than to rush the product to market. In fact, it is better just to improve our existing products than to botch a new product, even though it costs us less.

Summary
Decision trees provide an effective method of decision making because they:
clearly lay out the problem so that all choices can be viewed, discussed and challenged
provide a framework to quantify of the values of outcomes and the probabilities of achieving them
help us to make the best decisions on the basis of our existing information and best guesses.
As with all decision making methods, though, decision tree analysis should be used in conjunction with common sense. They are just one important part of your decision-making tool kit.
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  #8  
قديم 15-06-2007, 12:51 PM
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Force Field Analysis
Force Field Analysis is a method used to get a whole view of all the forces for or against a plan so that a decision can be made which takes into account all interests. In effect this is a specialised method of weighing pros and cons.
Where a plan has been decided on, force field analysis allows you to look at all the forces for or against the plan. It helps you to plan or reduce the impact of the opposing forces, and strengthen and reinforce the supporting forces.


Carrying Out a Force Field Analysis
To carry out a force field analysis, follow the following steps:
List all forces for change in one column, and all forces against change in another column.
Assign a score to each force, from 1 (weak) to 5 (strong).
Draw a diagram showing the forces for and against, and the size of the forces.
Example Force Field Analysis
An example of the analysis is shown below:



Once you have carried out an analysis, you can decide on the viability of the project.

Where you have decided to carry out a project, it can help you to analyse how you can push through a project that may be in difficulty. Here you have two choices:

To reduce the strength of the forces opposing a project
To increase the forces pushing a project
Often the most elegant solution is the first: just trying to force change through may cause its own problems as e.g. staff can be annoyed into active opposition to a plan instead of merely not welcoming it.
If you were faced with the task of pushing through the project in the example above, the analysis might suggest a number of points:

By training staff (increase cost by 1) fear of technology could be eliminated (reduce fear by 2)
It would be useful to show staff that change is necessary for business survival (new force in favour, +2)
Staff could be shown that the new machines will introduce variety and interest to their jobs (new force, +1)
Wages could be raised to reflect new productivity (cost +1, loss of overtime -2)
Slightly different machines with filters to eliminate pollution could be installed (environmental impact -1)
These changes swing the balance from 11:10 (against the plan), to 8:13 (in favour of the plan)
Summary
Force Field Analysis is an effective method of getting a picture of all the forces for and against a plan. It helps you to weigh the importance of these factors and asses whether a plan is worth pursuing.
Where you have decided to proceed with a plan, carrying out a Force Field Analysis helps you identify changes that might be made to improve the plan.
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فتذكّرونى بالخير
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  #9  
قديم 15-06-2007, 12:53 PM
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PMI - Plus/Minus/Interesting

What is PMI?

PMI stands for 'Plus/Minus/Interesting'. It is a valuable development (by Edward de Bono) of the 'pros and cons' technique used for centuries.
PMI is a basic decision making tool. When you are facing a difficult decision, simply draw up a table headed up 'Plus', 'Minus', and 'Interesting'. In the column underneath the 'Plus' heading, write down all the positive points of taking the action. Underneath the 'Minus' heading write down all the negative effects. In the 'Interesting' column write down the extended implications of taking the action, whether positive or negative.


Scoring your PMI table
You may be able to make a decision just from the table you have drawn up. Alternatively, consider each of the points you have written down and assign a positive or negative score to each appropriately. The scores you assign can be entirely subjective. Once you have done this, add up the score. A strongly positive score indicated that an action should be taken, a strongly negative score that it should be avoided.
An example is shown below:


Should I move to the big city?

Plus Minus Interesting
--------------------------------------------------------------------------------------------------------------
More going on Have to sell my Easier to find a new job? (+1)
(+5) house (-6)
Easier to see More pollution (-3) Meet more people? (+2)
my friends
(+5) Less space (-3) More difficult to get work done?(-4)
No countryside (-2)
Easier to get More difficult to get to work? (-4)
places (+3)
----------------------------------------------------------------------------------------------------------------
13 -14 -5 = - 6
Total = -6 - I'm happier living just outside the city.


For further information
Edward de Bono, Serious Creativity, HarperBusiness, New York, US, 1992.

Links
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  #10  
قديم 15-06-2007, 12:55 PM
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SWOT Analysis - Strengths, Weaknesses, Opportunities, Threats
SWOT Analysis is an effective method of identifying your Strengths and Weaknesses, and to examine the Opportunities and Threats you face. Often carrying out an analysis using the SWOT framework will be enough to reveal changes which can be usefully made.
To carry out a SWOT Analysis write down answers to the following questions:


Strengths:
What are your advantages?
What do you do well?
Consider this from your own point of view and from the point of view of the people you deal with. Don't be modest, be realistic. If you are having any difficulty with this, try writing down a list of your characteristics. Some of these will hopefully be strengths!

Weaknesses:
What could be improved?
What is done badly?
What should be avoided?
Again this should be considered from an internal and external basis - do other people perceive weaknesses that you don't see? Do your competitors do any better? It is best to be realistic now, and face any unpleasant truths as soon as possible.

Opportunities
Where are the good chances facing you?
What are the interesting trends?
Useful opportunities can come from such things as:
Changes in technology and markets on both a broad and narrow scale
Changes in government policy related to your field
Changes in social patterns, population profiles, lifestyle changes, etc.
Local Events

Threats
What obstacles do you face?
What is your competition doing?
Are the required specifications for your job, products or services changing?
Is changing technology threatening your position?
Do you have bad debt or cash-flow problems?
Carrying out this analysis is will often be illuminating - both in terms of pointing out what needs to be done, and in putting problems into perspective.
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