1.1 --- a/thesis/tex/2-MarketAnalysis.tex	Sat Feb 07 12:06:30 2009 +0100
     1.2 +++ b/thesis/tex/2-MarketAnalysis.tex	Sat Feb 07 14:47:27 2009 +0100
     1.3 @@ -22,19 +22,19 @@
     1.4  Electronic communication technologies can be divided in synchronous and asynchronous communication. Synchronous communication is direct dialog with little delay. Telephone conversation is an example. Asynchronous communication consists of independent messages. Dialogs are possible as well, but not in the same direct fashion. These two groups can also be split by the time which is needed for data delivery. Synchronous communication requires nearly real-time delivery, whereas for asynchronous communication message delivery times of several seconds or minutes are sufficient.
     1.5  \index{electronic communication!classification of}
     1.6  
     1.7 -Another possible separation is to distinguish recorded and written information. Recorded information, like audio or video data, is accessible only in a linear way by spooling and replay. Written information, on the other hand, can be accessed in arbitrary sequence, detail and speed.
     1.8 +Another possible separation is to distinguish recorded and written information. Recorded information, like audio or video data, is accessible only in a linear way by spooling and replay. Written information, on the other hand, can be accessed in arbitrary sequence, detail, and speed.
     1.9  
    1.10  \person{Lenke} and \person{Schmitz} use the same criteria to classify \emph{new media} \cite{lenke95}. They additionally divide into local and remote communication---the latter is presumed here---and by the number of communication participants. A classification by participant structure is omitted here, as communication technologies for many-to-many communication (like chat rooms) are usable for one-to-one (private chat) too, and ones for one-to-one (email) are usable for many-to-many (mailing lists).
    1.11  
    1.12 -Figure~\ref{fig:comm-classification} shows a classification of communication technologies by the properties synchronous/asynchronous and written/recorded. Email and \NAME{SMS} are examples for written and asynchronous communication; \NAME{IM} and chats are ones for written but synchronous communication. Voice mail and video messages stand as examples for recorded asynchronous communication. VoIP represents recorded synchronous communication.
    1.13 +Figure~\ref{fig:comm-classification} shows a classification of communication technologies by the properties synchronous/asynchronous and written/recorded. Email and \NAME{SMS} are examples for written and asynchronous communication; \NAME{IM} and chats are ones for written but synchronous communication. Voice mail and video messages stand as examples for recorded asynchronous communication. \NAME{VoIP} represents recorded synchronous communication.
    1.14  
    1.15  \begin{figure}
    1.16  	\begin{center}
    1.17  		\includegraphics[scale=0.75]{img/comm-classification.eps}
    1.18  	\end{center}
    1.19 -	\caption{Classification of electronic communication}
    1.20 +	\caption{Classification of electronic communication technologies}
    1.21  	\label{fig:comm-classification}
    1.22 -	\index{figure!Classification of electronic communication}
    1.23 +	\index{figure!Classification of electronic communication technologies}
    1.24  \end{figure}
    1.25  
    1.26  One might be surprised to find Instant \emph{Messaging} not in the group of \emph{message} communication. Instant Messaging could be put in both groups because it allows asynchronous communication additional to being a chat system. The reasons why it is classified as dialog communication are its primary use for dialog communication and the very fast---instant---delivery time.
    1.27 @@ -174,9 +174,9 @@
    1.28  
    1.29  \subsubsection*{Opportunities}
    1.30  
    1.31 -Opportunities of the market are large data transfers, originating in multimedia content, which becomes popular. If email is used as basis for Unified Messaging, lots of voice and video mail will be transferred. Email is weak related to this kind of data: The data needs to be encoded to \NAME{ASCII} which stresses mail servers a lot.
    1.32 -%fixme: ref to store-and-forward
    1.33 +Opportunities of the market are large data transfers, originating in multimedia content, which becomes popular. If email is used as basis for Unified Messaging, lots of voice and video mail will be transferred. Email is weak related to this kind of data: The data needs to be encoded to \NAME{ASCII} which stresses mail servers a lot. Additionally a lot of traffic is generated by the \name{store-and-forward} transfer, which \SMTP\ uses.
    1.34  \index{um}
    1.35 +\index{store-and-forward}
    1.36  
    1.37  The use of different hardware to access mail is another opportunity of the market. But as more hardware gets involved, the networks become more complex. Thus the need for more software and infrastructure to transfer mail within the growing network might be a weakness of the email system. %fixme: think about that
    1.38