Hi Everyone! After being silent for quite a long time, today, I bring you a new Khmer Unicode font namely Kh MPS Prey Veng. Tested with Adobe CS3+ products and Microsoft Office.

Click HERE to download.


After taking the quiz at

I have found myself a NERD. I’ve never noticed it before!

But what is a NERD? Here, as described on Wikipedia, a Nerd is a term, often bearing a derogatory connotation or stereotype, that refers to a person who avidly pursues intellectual activities, technical or scientific endeavors, esoteric knowledge, or other obscure interests, rather than engaging in more social or conventional activities. The nerd may be awkward, shy and unattractive.[1] Therefore, a nerd is often excluded from physical activity and considered a loner by peers, or will tend to associate with like-minded people.

The description works find for my case. It is true that I am often excluded from physical activity and considered a loner by peers, or will ten to associate with like-minded people.

Are you sometimes unsure if your important e-mail you sent is received? In such case, you will really want to make sure that your e-mail reaches your intended recipient.

Some time we can try to send our self a copy by using the option BCC (Blind Carbon Copy) which will send us a copy without letting the recipient know you are sending to yourself. Still, this is not a good solution, if the problem is not at your side. You may receive your own e-mail while your recipient may not.

So what else can you do? Following is the suggested way you should try.

Add a Read and/or Delivery Receipt


1. Create a new message. Click the Options button. The Message Options window will appear.

2. In the Voting and Tracking Options area, check Request a delivery receipt for this message.

Click OK

Now you can compose your message and send.


Create a new message and click on the Options button.

Check the option-Request a Delivery Receipt. It is much easier than the earlier versions.
Now you can compose your message and send.

This option helps you make sure your mail reaches your recipient. If you want to even make sure that your e-mail is opened by your recipient, then use the following option:


Download font here!

This is a new font I created during the New Year Holiday. It was not created from the scratch but from the existing font, ABC family. I just made some changes, yet what is important is it becomes Khmer Unicode font.


Overview of Chart Types and their Uses

Chart Type


Typical Applications

Variants, Remarks


Yes Cumulated totals (numbers or percentages) over time Percentage, Cumulative


Yes Observations over time or under different conditions; data sets must be small Vertical (columns), horizontal (bars); multiple columns/bars, columns/bars centered at zero

Segmented Column/Bar

Yes Proportional relationships over time May be scaled to 100%

Frequency Polygon

No Discrete frequency distribution


No Discrete frequency distribution Columns/bars without gaps

Line, Curve

Yes Trends, functional relations Data point connected by lines or higher order curves


Yes Proportional relationships at a point in time Segments may be pulled out of the the pie for emphasis (exploded pie chart)


No Distribution of data points along one or two dimensions One-dimensional, two-dimensional


No Typically used for geographical data; can also be used for parts of devices, human or animal bodies Useful, if an analog relation can be used for representing data

The column PIG indicates whether the respective charts types are available as Portable Interactive Graphics.

Area Chart

Area chart

Figure 1: Area chart

Use it to…

  • Display over time (or any other dimension):
    • How a set of data adds up to a whole (cumulated totals)
    • Which part of the whole each element represents


  • Percentage: The sum always represents 100% (relative scale)
  • Cumulative: The sum can vary according to the elements (absolute scale)

Column/Bar Chart

Use it to…

  • Present few data over a nominal (e.g. countries, testing conditions, …) or interval scale (e.g. time); useful for comparisons of data

Do not Use it for…

  • Comparisons: Better use one-dimensional scatterplots, because these are not dominated by bars or columns.
  • Larger data sets: Use line charts.

Selecting Bars or Columns

  • Use analogy as a selection criterion, if applicable; when in doubt, use columns
  • Use a horizontal bar chart if the labels are too long to fit under the columns


  • Multiple Column/Bar Chart: Use it to present data rows for several variables
  • Side-by-Side Chart: Use it to (1) show contrasting trends between levels of an independent variable, (2) if comparisons between individual pairs of values are most important; do not use for more than two independent variables
Multiple column chart side-by-side chart

Figure 2: Multiple column chart (left), side-by-side chart (right)

Segmented Column/Bar Chart

Other Names: Divided or stacked column/bar chart

Segmented column chart (relative values)

Figure 3: Segmented column chart (relative values)

Use it to…

  • Present a part-whole relation over time (with accurate impression, see below)
  • Show proportional relationships over time
  • Display wholes which are levels on a nominal scale

Segmented column/bar charts are more accurate than pie chart, because distances can be more accurately estimated than areas.

Frequency Polygon, Histograms

Histogrm as frequency ditribution

Figure 4: Histogram as frequency distribution


  • Polygon: Connects data points through straight lines or higher order graphs
  • Histogram: Columns/bars touch; useful for larger sets of data points, typically used for frequency distributions
  • Staircase Chart: Displays only the silhouette of the histogram; useful for even larger sets of data points, typically used for frequency distributions
  • Step chart: Use it to illustrate trends among more than two members of nominal or ordinal scales; do not use it for two or more variables or levels of a single variable (hard to read)
  • Pyramid histogram: Two mirror histograms; use it for comparisons

Line Chart

Line chart

Figure 5: Line chart

Use it…

  • To display long data rows
  • To interpolate between data points
  • To extrapolate beyond known data values (forecast)
  • To compare different graphs
  • To find and compare trends (changes over time)
  • To recognize correlations and covariations between variables
  • If the X axis requires an interval scale
  • To display interactions over two levels on the X axis
  • When convention defines meaningful patterns (e.g. a zigzag line)

Line graphs may consist of line or curved segments:

  • Lines: Use straight lines to connect “real” data points
  • Curves: Use curves to represent functional relations between data points or to interpolate data

Do not Use it…

  • If the X axis has non-numeric values


  • Graph with double-logarithmic or half-logarithmic scale divisions
  • Graph with variance bars, stock charts (High/Low/Close) etc.

Pie Chart

Pie chart

Figure 6: Pie chart

Use it to…

  • convey approximate proportional relationships (relative amounts) at a point in time
  • compare part of a whole at a given point in time
  • Exploded: emphasize a small proportion of parts

Do not Use it …

  • For exact comparisons of values, because estimating angles is difficult for people.
  • For rank data: Use column/bar charts in this case; use multiple column/bar charts for grouped data
  • If proportions vary greatly; do not use multiple pies to compare corresponding parts.


  • Pie charts cannot represent values beyond 100%.
  • Each pie chart is valid for one point in time only.
  • Pie charts are only suited to presenting quite a few percentage values.
  • Angles are harder to estimate for people than distances; perspective pie charts are even harder to interpret.


One-dimensional scatterplot two-dimensional  scatterplot

Figure 7: One-dimensional scatterplot (left), two-dimensional scatterplot (right)


  1. One-dimensional scatterplot: Data point are drawn above a baseline (as in column/bar charts). Here the data points are not connected but remain isolated data points.
  2. Two-dimensional scatter plot: Shows correlation between two data sets. This chart type has two dependent variables: One is plotted along the X axis, the other along the Y axis; the independent variable is the intersection of both dependent variables, realized as a data point in the diagram.

Use it to…

  • Show measurements over time (one-dimensional scatterplot)
  • Convey an overall impression of the relation between two variables (Two-dimensional scatterplot)

Do not Use it for…

  • Determining and comparing trends, interpolation, extrapolation, recognition and comparison of change rates
  • More than one independent variable: Avoid illustrating more than one independent variable in a scatter plot


If your answer is yes, then virus is one of the others to be considered causing such problems.

Be careful with opening e-mail attachment. It may contain virus, but it does not mean that you can never open it, just to make sure it is sent from your real sender. If you see some unexpected attached file, be sure to check with your sender before opening it or scan it first. Here are some of the more common file types which may hide viruses: (more…)