Powerplan: the alternative software for presentations at local area network using VirtualTreeViewand omnithread

International Journal of Electrical and Computer Engineering (IJECE)
Vol. 10, No. 1, February 2020, pp. 947~961
ISSN: 2088-8708, DOI: 10.11591/ijece.v10i1.pp947-961  947
Journal homepage: http://ijece.iaescore.com/index.php/IJECE
Powerplan: the alternative software for presentations at local
area network using VirtualTreeViewand omnithread
Daniel Silli Bataona1
, Rinaldi Munir2
, Tutun Juhana3
,
Gloria Christiana Manulangga4
, Jemsrado Sine5
1,4,5
Department of Electrical Engineering, Computer and Network Engineering, State Polytechnic of Kupang, Indonesia
2,3
School of Electrical Engineering and Informatics, Bandung Institute of Technology, Indonesia
Article Info ABSTRACT
Article history:
Received Jan 29, 2019
Revised Jul 27, 2019
Accepted Sep 28, 2019
Software development from the results of this research is not only beneficial
for educational institutions but also for personal or specific institutions and
institutions who want to conduct seminars, presentations, or other activities
that involve many audiences. The advantage is that the audience will not
experience problems such as when using an LCD projector, such as limited
visibility, location or space, and the viewpoint of the audience on
the Projectors. This research can be the answer to the need for using LCD
projectors that often occur in the process of education, meetings, or seminars
that continue to increase every time. Also, the lack of LCD compared to
the number of teaching needs in each class and the unstable electricity
conditions and the low electricity ratio in East Nusa Tenggara, so that makes
the device LCD vulnerable to damage. Testing on LAN networks withthe
same number of clients on each test shows that there was an increase of 18%
and 75% in each addition to the number of servers. The best performance of
Powerplan is still shown when the number of servers that present several
five, with the response time of each client connected under two seconds.
Keywords:
Local area network (LAN)
Omnithread
Powerpoint
Presentation
Software
Virtual tree view
Copyright © 2020Institute of Advanced Engineering and Science.
All rights reserved.
Corresponding Author:
Daniel Silli Bataona,
Department of Electrical Engineering, Computer Engineering and Network,
State Polytechnic of Kupang,
Adisucipto Street, Penfui, Kupang, East Nusa Tenggara, Indonesia.
Email: danielbataona@pnk.ac.id
1. INTRODUCTION
The reason why PowerPoint is the most widely used application in the world is that PowerPoint is
a powerful tool in making presentations with a clear structure and has a strong visual impact [1]. Microsoft's
continued development of PowerPoint also supports this since it was acquired from Forethought in 1987 [2].
Also, another advantage that PowerPoint has is the use of video, audio and hyperlink document functions,
where these functions are quite efficient in presenting learning material thus helping influence on student
achievement, despite the positive response of students to using PowerPoint [3, 4]. Another advantage of
PowerPoint compared to conventional teaching is that PowerPoint can give a positive effect on learning
retention over a more extended period [5].
In the field of research, there are around 86% of researchers or most researchers use PowerPoint to
present their research results because of the advantages of PowerPoint in reporting to tables and graphs [2].
While in the field of teaching, field offices and research fields where presentations using PowerPoint are
combined with projectors [6]. The results show that using PowerPoint makes it possible to tailor their
expertise through information exchange and negotiation in conveying information through PowerPoint
presentations. The combination of PowerPoint use and projector devices used in teaching and learning and
presentation, learning brings significant benefits regarding learning and motivation learning [7, 8].

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Int J Elec & Comp Eng, Vol. 10, No. 1, February 2020 : 947 - 961
948
This research can be the answer to the need for using LCD projectors that often occur in the process
of education, meetings, or seminars that continue to increase every time [9, 10]. Also, the lack of LCD
compared to the number of teaching needs in each class [11] and the unstable electricity conditions and
the low electricity ratio in East Nusa Tenggara [12, 13] have resulted in frequent blackouts suddenly, so that
makes the device LCD vulnerable to damage. Plug and play device connections by projectors make
the presentation process dependent on the use of the projector quite high. However, problems can arise when
there are no or limited available projectors. In addition to the problem of limited availability, there are also
other problems, such as blurry, shaded, or dead pixel projector display problems. Also, the Projector has
limitations regarding visibility and viewing angle to the projector screen. A projector with a larger resolution
is needed if you want to reach an audience with significant visibility. The viewing angle is also quite
influential because the viewers on the side with a narrow viewing angle from the screen projector cannot
enjoy the projector's display correctly. Another thing that also needs to be seen is the limited presentation
space using a projector because the range of projectors is limited to a particular location or room, additional
projectors are needed in each room if you have an audience in a different location or room.
The need for LCD projectors is very urgent, so even though they often experience shortcomings,
it is impossible to continue to make purchases when needed to repair LCD projectors that require high costs
such as buying a new device. Software development from the results of this study is not only beneficial for
educational institutions but also for personal or specific institutions and institutions who want to conduct
seminars, presentations, or other activities that involve many audiences. The advantage is that the audience
will not experience problems such as when using an LCD projector, such as limited visibility, location or
space and the viewpoint of the audience on the Projector LCD / Screen. Another contribution that can be
given from this research is a model of the teaching and learning process in real-time without using an LCD
and only using a PC/ Laptop connected to the same LAN. It is a development of research that supports
the concept of green computing because it also reduces the use of equipment LCD projector, but the usage
function remains the same even more effective and interactive even without the device. Presentation model
like this is the development of new models in the learning process using LAN networks but without using
the internet connection and is the cross-platform model.
The results of this study try to provide other alternatives in using PowerPoint to make presentations
but without using a projector. There are similar presentation applications that use cloud-based, web-based,
or internet connections [14-16]. The applications offered have other advantages, namely without using
an internet connection. The proposed alternative software solution is software with the name Powerplan
(PowerPoint at LAN) used in the scope of Local Area Networks (LAN) without an Internet connection [17].
Powerplan uses Transport Layer Protocols [18] are TCP and UDP.
2. RELATED WORKS
Some scientific articles below are an illustration of the use of several presentation devices that are
offline, online/ cloud and popular / most widely used types of applications.
2.1. Offline software
Collage is a software made for school teachers in developing countries for teaching needs in class.
Collage is another form of practical teaching method in several schools in India, after going through
the results of the investigation they believe that with simple equipment can display images and textbooks that
can help the process of teaching and learning interactions in the classroom as well as the blackboard used.
Four schools in the Indian suburbs tested the use of Collage for presentations in class, and the results showed
that in addition to the great interest of the Collage users, the fact that there was an increase in students'
learning abilities through visual media was given. Collage working principle is to display a scan of a picture
or textbooks through presentations, but more interactive for teachers or users can make a mark on the picture
and short writing on Collage media when doing presentations [19].
Applications such as PowerPoint presentations and the like today are commonly used in the world
of education. This situation also happens in the education process for students who have visual impairments.
Nevertheless, keep in mind that how practical the PowerPoint presentation application is for these students
because the teacher only focuses on oral and lecture explanations. In this paper, Onishi et al. [20] are testing
software for students who have visual impairments. The results of this software development allow
the instructor to distribute information in the form of text and graphics to students who have visual
impairments according to their individual needs. Using experimental devices, the results of the tests are
the increasing concentration of students regarding listening to the explanation from the teacher.

Int J Elec & Comp Eng ISSN: 2088-8708 
Powerplan : the alternative software for presentations at local area network using… (Daniel Silli Bataona)
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In Figure 1 we can see all the system components, including management tools for teachers, client
devices to display material, and server distribution services that connect management devices and client
devices. Server distribution services also distribute material data to management devices on the teaching
computer and mark material focus areas and instructions for deleting material data.
Figure 1. Overview of entire system components [20]
2.2. Online or cloud-based software
The easiest way to make teaching materials consisting of sound recordings and videos are using
PowerPoint because it is practical and does not require additional devices. However, now there is a Cloud
Computing based system that can provide e-learning content writing system with the name Kumamoto
Universal and Multipurpose Authoring (KUMA). The working principle of KUMA are the instructors upload
PowerPoint files that have narration to the web application server, and the results will be displayed in PDF
slide and video streaming [21, 22]. The working principle of KUMA can be seen in Figure 2. KUMA's work
process is to collect PowerPoint material as the initial material for video streaming. The PowerPoint material
is processed in a system called Pulsed Power, then published to the Internet in the form of Streaming Book
that is ready for use by students. The KUMA work process can be seen in Figure 3.
Figure 2. KUMA system architectures [21, 22]

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Figure 3. Streaming book process using pulsed power engineering [21, 22]
2.3. Popular presentation software
The results of the study [23, 24] provide an overview of the advantages and disadvantages of using
PowerPoint and Prezi through questionnaires given to students. However, the results of this study do not
compare PowerPoint and Prezi because not many students know and use Prezi compared to PowerPoint so
that the results will be less relevant. The following information is a general summary of students' opinions
about Prezi and PowerPoint, which can be seen in Table 1.
Table 1. Questionnaires opinion of students [24]
No. Prezi PowerPoint
1
1
- Good;
- Free;
- Has the function of zooming in and zooming out.
- No Opinion
2
2
- Interesting;
- Nevertheless, do not know how Prezi works.
- No Opinion
3
3
- Do not use Prezi because it requires an internet
connection.
- No Opinion
4
4
- No Opinion - Familiar;
- Easily accessible;
- Many use it.
5
5
- Low usability value. - No Opinion
6
6
- Less support for using plugins for physics,
chemistry, and math.
- PowerPoint has functions for physical, chemical and
mathematical formulas.
7
7
- No Opinion - They are using PowerPoint because they do not know
the other presentation programs.
8
8
- No Opinion - PowerPoint has fulfilled the presentation needs, so they
do not use other applications.
3. PROPOSED SYSTEM
3.1. Work system design
The application consists of two main modules are Client Module and Server Module. As we can see
the working principle in Figure 4.
Figure 4. Working principle of powerplan

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3.1.1. Server module
On the server module, there are several sub-modules, namely:
a. File Processing Sub Module;
Responsible for the entire retrieval process Presentation data from the File and saved into the JPEG file
format in the temporary directory using the Com Object Microsoft PowerPoint facility.
b. Image Processing Sub Module;
Responsible for the entire image processing process. The slide begins by taking a slide image that has
been processed by the processing sub-module and saved to memory. Besides this, sub-module is
responsible also for supplying image data to be transferred to the client at the client's request when
the connection is made.
c. Server Listing Sub Module;
This sub-module has the primary function of registering all presentation servers that are active on
the local network. The results of this data collection will be used by the Multicast submodule to decide
the name of the multicast group, UDP Port, TCP port and Multicast port that will be used on
the presentation server that wants to be activated so that no collision with the presentation server is active
on the network.
d. Listener Sub Module;
The Module is a UDP server that functions to respond to requests from Server Listing Sub Modules on
both the server and client to server status, multicast group names, UDP, TCP and Multicast ports used by
the server.
e. Multicast Sub Module.
Responsible for sending information and presentation data to the client during the presentation process.
3.1.2. Client module
In the Client Module there are several sub-modules, namely:
a. Server Listing Sub Module
Server Listing on the client is the same as the Server Listing sub-module on the Server, where
the primary function is to record all presentation servers that are active on the local network.
The client will use this list of active servers as a basis for selecting the presentation to be followed.
With this facility, the user does not need to manually enter the address and port of the presentation server
to be used.
b. Image Processing Sub Module
Responsible for the entire process of image processing Slide begins by requesting all image slides from
the server via the TCP protocol starting from the active slide and then all slides from the smallest
index/page.
c. Multicast Sub Module.
Responsible for listening to all commands from the server to be used as a basis for updating
GUI applications.
3.1.3. Working principles
a. Client records active servers on the network by broadcasting the word server to the network through
the UDP protocol;
b. UDP Server on each server that is active in the network will respond to the request by sending data Title
Presentation, Presenter Name, Multicast Group Name, TCP Port, Multicast Port, Number of Slides and
Active Index slides;
c. All responses from the active presentation server will be recorded and displayed on the broadcaster list to
be chosen by the user;
d. After the user selects which presentation to follow, the client will connect to the server via the TCP
protocol to request all available slides with IP Address and TCP Port;
e. The server will send all Slide data in the form of images and indexes (pages to what) in order: the first
slide sent is a slide on the current page, followed by all slides that have not been sent, slides starting from
the smallest to the most significant pages in the sequence. The process of sending Data Slide using
Background Thread;
f. Immediately after the First Slide (Slide on the active page) is received by the Client, Background Thread
that handles the Data Slide sending process notifies or informs the GUI to display the Slide on
the monitor screen while continuing the process of transferring the other Data Slide;
g. The client activates TIdIPMCastClient Component with Group Multicast and Port data according to
the information already obtained in the previous process to respond to (Listening) Multicast Data from
the Server;

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h. The server sends Multicast Data to all clients by the procedures applied to the server. Multicast Data that
is sent is as follows:
 Slide Index information (Slide number) and Animation Index (Animation Number) which will be
displayed when there is an index change on the server;
 The command to end the presentation session when the server is finished or when the server stops
the Presentation process;
i. When the server has finished Presenting or cancelling the presentation, the server will send
a command to stop the presentation to all clients connected to the server;
j. The client will end the Listening session, close the Client form and return to the Powerplan Application
Main Form, immediately after receiving the command to stop the presentation from the server.
3.2. System compatibility with the operating system
This application is built with the Embarcadero Delphi XE-5 IDE under the Windows 8 Information
System so that it can run on almost every Operating System supported by Embarcadero. Prototype Example
An existing application is built with the target 32-bit Windows platform so that it can run on all Windows
Operating Systems both 32-bit and 64-bit. To produce a more specific Application Prototype following
the target Operating System can be done as follows:
a. To produce a specific application of 32 bit or 64 bit on a Windows Operating System, change the target
platform on the Project Manager Tab as shown below. The use of project managers in system
development is by adjusting the system platform when creating a project group. The process can be seen
as shown in Figure 5.
Figure 5. Specific target platforms application type
b. To be able to produce applications that can run on other PC operating systems, for example, Linux and
Mac-OS can be selected one of the following two possibilities:
1) The same source code is used to be built in each operating system with a note; the server must be
added with support Presentation files because of the com object and Microsoft PowerPoint as
a prerequisite for the proper functioning of the server running only the Windows Operating System.
2) The target is only added according to Embarcadero support with Com Object's Microsoft PowerPoint
must be replaced with an open office library.
c. To be able to produce applications that can run on mobile operating systems such as Windows Mobile,
Android, and IOS, the Platform must be changed to the Mobile Operating System. Also, it requires
changes to the design of the Graphical User Interface (GUI) according to the target Operating System,
and Com Object Microsoft PowerPoint must be replaced with the Open Office Library;
d. Embarcadero support for the Operating System that is targeted by the application platform is different for
each version. For example, Embarcadero Delphi XE-5 by default supports 32-bit and 64-bit platforms on
Windows Operating Systems but also supports Linux, Mac-OS, Android and IOS operating systems that
can be activated during the Embarcadero installation. While in Embarcadero Delphi Berlin/ Tokyo/ Rio,
almost all operating systems can be supported as a target application platform, even plugins or
components are prepared to add support to other operating systems.

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4. RESULTS AND ANALYSIS
4.1. Implementation system
One of the main advantages of Powerplan application is that the use of the system is not limited to
individual rooms. That is, as long as the user is connected to LAN where the server or presenter is located,
the user can follow the presentation without having to be present or in the meeting room or the room where
the presentation is intended. We can see the initial display or home screen of Powerplan application as shown
in Figure 6. The Powerplan application will open the Presentation file and convert it into a format that is
suitable for the Powerplan application. The time needed for this conversion process depends on the size of
the file size and the number of slides on the file. The conversion results will be displayed as in Figure 7 if
the Powerplan application system can read the presentation file.
Figure 6. Home screen of powerplan application
Figure 7. Converted result by powerplan
After completing the Presentation Title and Presenter Name on the prepared form, then click
the Start button to start the presentation. The presentation will begin in Fullscreen mode. You can press
the Esc key to exit Fullscreen mode into navigation mode, and vice versa can click the Preview menu in
navigation mode to enter FullScreen mode.
To be able to use Powerplan as a Client mode so that it can follow the presentation, follow
these steps:
 Run Powerplan, then select the tab Broadcasters as shown in Figure 8;

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Figure 8. Powerplan application in client mode
 Click the Reload button or right-click on the Server List and select the menuReload as shown
the following and wait until the search is complete. During the process searching of active Server,
the button and menu Reload will be deactivated. If the Reload button is active again, then the searching
has finished. The active Server on the network will appear on the Server list;
 Just right-click on the Server list then select Connect and wait for the Presentation Slide to appear.
The connection process, as shown in Figure 9.
Figure 9. Connection process to the list of server
The development process of Powerplan uses the Embarcadero Delphi XE5 IDE by utilizing
"Internet Direct (Indy)" component [25, 26]. In addition to using these Indy components, the Powerplan
application also uses third-party components which include VirtualTreeView developed by Mike
Lischke [27, 28] and OmniThread developed by Primož Gabrijelčič [29, 30]. The Indy components used in
the Powerplan application are :
1. Indy Components in Server Modules;
 TIdUDPServer: Serves to respond to the search for Active Servers from the Client;
 TIdTCPServer: Serves to transfer presentation data to the Client after the Client is connected to
the presentation;
 TIdIPMCastServer: Works as Multicaster presentation files;
 TIdUDPClient: Serves to record all UDP Ports that have been used by the active server to prevent
Port Collision, which is where two or more servers use the same multicast and port groups.

955
2. Indy Components in Client Modules;
 TIdUDPClient: Serves to record all active servers so users can choose to follow available slide
presentations, without having to input additional information such as Host Name or IP Address
and Port;
 TIdTCPClient: Serves to transfer presentation slide data from the server after the client is connected
to the presentation;
 TIdIPMCastClient: Serves to receive and process data and information sent by the server.
3. Indy Complementary Components on Powerplan.
 TIdAntiFreeze: Works to prevent application freezes.
4.2. Procedure and function list broadcasting of powerplan system
4.2.1. Procedure list broadcasting
procedure _ListBroadcastings(Task:IOmniTask; OnItem:TStrProcRef; UDPPort:Word;
AWaitMSec:Integer);
var
UDP:TIdUDPClient;
peerIP, s:String;
PeerPort:word;
L:Tstringlist;
stoped:boolean;
begin
UDP:=TIdUDPClient.Create(nil);
L:=Tstringlist.Create;
try
UDP.Port:=UDPPort;
UDP.BroadcastEnabled:=true;
UDP.Broadcast('SERVER',UDPPort);
stoped:=false;
while not (stoped or Task.Stopped or Task.Terminated) do begin
s:=UDP.ReceiveString(peerIP, PeerPort,5000);
stoped:=s='';
if not (stoped or Task.Stopped or Task.Terminated) then begin
L.Text:=s;
L.VStr['PeerIP']:=peerIP;
L.VInt['PeerPort']:=PeerPort;
TThread.Synchronize(nil,
procedure
begin
OnItem(L.Text)
end);
end;
end;
finally
L.Free;
UDP.Free;
if not (stoped or Task.Stopped or Task.Terminated) then
Task.Invoke(
procedure
begin
OnItem('')
end);
end;
end;
4.2.2. Function list broadcasting
function ListBroadcastings(OnItem:TStrProcRef; OnTerminated:TOmniOnTerminatedFunction=nil;
UDPPort:Word=8889; AWaitMSec:Integer=5000):IOmniTaskControl;
begin
result:=CreateTask(

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procedure(const task: IOmniTask)
begin
_ListBroadcastings(Task,OnItem,UDPPort,AWaitMSec);
end, 'List Broadcast')
.OnMessage(
procedure(const task: IOmniTaskControl; const msg: TOmniMessage)
begin
case MSG.MsgID of
1:OnItem(Msg.MsgData.AsString);
2:OnItem('NULL');
end;
end)
.OnTerminated(onTerminated)
.Run;
end;
Applications Powerplan does not handle itself access to presentation files but uses Com Object to
access files of the presentation with Microsoft Office applications. Working principles of Server are:
1. The Powerplan application requests the reading of presentation files to Microsoft Office (PowerPoint)
using Com Object;
2. If the file can be accessed and read, the Powerplan application will ask Microsoft Office (PowerPoint)
to extract each Slide page into JPG / JPEG format images;
3. The extracted page is stored sequentially as a slide in the form of Graph data (images) to be then used to
be displayed on the client computer screen or sent to each client when connected.
4.3. Strengths and weaknesses of system
4.3.1. Strengths
a. Simple, no particular server is needed. This application can function as a server, can function as
a client.
b. For monitoring purposes, this application can run at the same time as a client and server with a note :
 The Operating System supports the reuse of the network address by the socket. In this case,
the Operating System must support the SO_REUSEADDR option when the setsockopt function is
called [31, 32].
 If the REUSEADDR option is not supported by the operating system, the client can only run if
the Group Multicast, UDP Port and TCP Port on the client are not the same as Group Multicast, UDP
Port and TCP Port on the server running on the same machine / PC.
We tested the REUSEADDR function to find out the operating system support for the placement of
server and client applications on the same PC or different PCs. Test indicators are Multicast Group,
TCP Port and UDP Port. The test results are as shown in Table 2.
 The network is not flooded with broadcast data because the server only broadcasts as needed.
Thus there is no limit on how many servers are allowed to broadcast simultaneously in the same
network.
4.3.2. Weaknesses
a. Files Supported presentations are PowerPoint files using com objects. It means the Server not only can
read PowerPoint files but also only run if the Operating System havePowerPoint;
b. There is no support for open office;
c. Application characteristics are "Still Slide" where the information sent is slide images without support for
animation, sound, and video or other media files. The animations found in the Application Prototype are
only randomly selected randomly by the server of the animation library developed by developers based on
the PicShow library version 4.20 by Kambiz R. Khojasteh[33, 34]. However, keep in mind that still slides
also have their advantages because they do not cause flood packets on the network, thus preventing the
possibility of bottlenecks. If real-time is required, the broadcast sub-module on the server module must be
replaced with real-time online streaming, in the form of a streaming video (audiovisual) in real-time;
d. Relatively Real-Time. It means that it can be said to be Real-Time but not completely real-time because
what is broadcast is a command, not a video or image of everything that happens on the server monitor
screen. For example, if there is a movement of the cursor on the monitor server/broadcaster screen,
the information can only be obtained by the client if the server sends specific information about
the movement of the cursor.

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Table 2. Reuse address option
PC 01
Support SO_REUSEADDR
Experiment 1: Self Presentation
(follow the presentation from the server on the same machine or PC)
Server Client Status
Multicast Group 239.255.2.3 239.255.2.3 OK
UDP Port 8889 8889 OK
Multicast Port 6155 6155 OK
TCP Port 6155 6155 OK
Experiment 2: Attend Presentation
(follow the presentation from the server on different machine or PC)
PC 02
Unsupport SO_REUSEADDR
Experiment 3: Self Presentation
(follow the presentation from the server on the same machine or PC)
UDP Port 8889 8889 failed
Multicast Port 6155 6155 failed
TCP Port 6155 6155 failed
Experiment 4: Attend Presentation
(follow the presentation from the server on different machine or PC)
4.4. Proposed algorithm
The algorithm described it is a function to start the connection from the client to the server, which is
the condition where the client starts joining the server that broadcasts the presentation.
a. TFClient Create Application;
b. F.fServerData start assign
c. Connection F.fUserName
d. Broadcaster makes CellText for PresentationTitle and PeerIP;
e. Prepare Multicast;
f. ServerData answer and send Presentation Title, Multicast Group, and Multicast Port;
g. Prepare TCP port and Multicast use TCP Port in ServerData;
h. If the result then begins F.Show.
We can see the proposed algorithm model in the flowchart chart in Figure 10.
Figure 10. Flowchart of powerplan

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4.4. Performance evaluation
Below this will be given the results of Powerplan testing and analysis that is run on a Local Area
Network, using a scenario that is, Testing on a LAN with one server, two servers, and three servers.
Each test uses five DHCP clients with a packet size of data sent by 8 bytes; the client specifications used are
the Windows 10 64-bit home edition operating system with 2GB of RAM. As we can see, the first test in
Table 3. The Round Trip Times (RTT) test results from five clients deliver an average time of 3.6
milliseconds. In the second test, we can see in Table 4, the number of broadcaster servers plus one. The test
results showed that there was an increase in average RTT of 10.4 milliseconds.
Table 3. Test with one server
Name of
Presentation File
Number of
Slides
Server
Broadcaster
Group Client IP
Address
Average Round
Trip Times (ms)
Learning01 16 192.168.1.8 239.255.2.3 192.168.1.4 2
Learning01 16 192.168.1.8 239.255.2.3 192.168.1.7 2
Learning01 16 192.168.1.8 239.255.2.3 192.168.1.110 5
Learning01 16 192.168.1.8 239.255.2.3 192.168.1.11 2
Learning01 16 192.168.1.8 239.255.2.3 192.168.1.3 7
Averages Round Trip Times 3.6
Table 4. Test with two servers
Name of
Presentation File
Number of
Slides
Server
Broadcaster
Group Client IP
Address
Average Round
Trip Times (ms)
Learning01 16 192.168.1.8
239.255.2.3 192.168.1.4 2Learning02 6 192.168.1.13
Learning01 16 192.168.1.8
239.255.2.3 192.168.1.7 4Learning02 6 192.168.1.13
Learning01 16 192.168.1.8
239.255.2.3 192.168.1.110 27Learning02 6 192.168.1.13
Learning01 16 192.168.1.8
239.255.2.3 192.168.1.11 4Learning02 6 192.168.1.13
Learning01 16 192.168.1.8
239.255.2.3 192.168.1.3 15Learning02 6 192.168.1.13
Then in Table 5, testing uses three broadcaster servers but with fewer presentation slides. The third
test result showed that there was an increase in the average RTT value from 10.4 milliseconds, to 18.2
milliseconds. This test intends to illustrate that if there are network constraints when implementing
Powerplan in a LAN with several broadcaster servers, which causes an increase in the amount of traffic.
Table 5. Test with three servers
Name of
Presentation File
Number of
Slides
Server
Broadcaster
Group Client IP
Address
Average Round
Trip Times (ms)
Learning01 16 192.168.1.8
239.255.2.3 192.168.1.4 14
Learning02 6 192.168.1.13
Learning03 4 192.168.1.19
Learning01 16 192.168.1.8
239.255.2.3 192.168.1.7 3
Learning02 6 192.168.1.13
Learning03 4 192.168.1.19
Learning01 16 192.168.1.8
239.255.2.3 192.168.1.110 23
Learning02 6 192.168.1.13
Learning03 4 192.168.1.19
Learning01 16 192.168.1.8
239.255.2.3 192.168.1.11 10
Learning02 6 192.168.1.13
Learning03 4 192.168.1.19
Learning01 16 192.168.1.8
239.255.2.3 192.168.1.3 41
Learning02 6 192.168.1.13
Learning03 4 192.168.1.19

959
The results of the performance testing showed that there was an increase in the number of RTT
averages as the number of broadcaster servers increased. These results can be seen in Figure 11, which shows
that the increase influences the increase in RTT in the amount of traffic on the network. This test by adding
the number of broadcaster servers that broadcast at the same time, so that all clients can see the list of active
servers totalling three servers. The client can select the list of servers that are currently active according to
the desired topic or theme. The results test of the Powerplan illustrates that as the number of servers that
broadcast increases, traffic increases, and impacts on increasing RTT. However, this has not affected
the process of accessing slide presentations presented from each active server. Performance result of
Powerplan is right; this is indicated by the average waiting time of each client to get a slide show on
the monitor screen of each client is one to two seconds.
Figure 11. Averages round trip times of performance
5. CONCLUSION
Powerplan system does not broadcast video presentations or broadcast picture frames at any time.
Powerplan application only broadcasts commands and broadcast commands carried out only in the event of
a change to the server. In this way, reducing the occurrence of collisions on the network by the number of
data packages or condition of load balancing [35]; Powerplan application allows the Client and Server
modules to run simultaneously on one machine, but this depends entirely on the Authority provided by
the Operating System used; Powerplan system can be used on LAN without an internet connection.
Powerplan application uses Microsoft PowerPoint files as a presentation base but has the following
limitations:
 Server functions can only be implemented if the Server has Microsoft Office installed because
the application uses COM facilities to access Presentation files;
 Client and Server functions can only run if the Operating System used is not installed VirtualBox
applications or other similar applications, because the application blocks broadcast and multicast data
through UDP. To be able to use the Powerplan Application together with VirtualBox without problems, it
is necessary to set up the VirtualBox Network Adapter;
 Powerplan application has a Client-Server module in which the application functions not only as
a Server that does the presentation but also function as a Client or presentation participant;
The test results showed an increase in RTT along with the increasing number of servers conducting
presentation activities. Testing on LAN networks with the same number of clients on each test shows that
there was an increase of 18% and 75% in each addition to the number of servers. The best performance of
Powerplan is still shown when the number of servers that present several five, with the response time of each
client connected under two seconds.
6. FUTURE WORKS
The Powerplan system does not have a chat function between clients and servers, so in its
development, the chat function needs to be added. In addition to the Delphi IDE, there are other Compilers,
namely Java, which has more and more extensive support because there are almost all libraries for
Presentation and streaming. So that in the development of Powerplan will be created using Java.
ACKNOWLEDGEMENTS
The authors gratefully acknowledge that Ministry of Research Technology and Higher Education,
Republic of Indonesia through the Research Cooperation Between Universities Program (PKPT) that
supports the publication of research conducted.

 ISSN: 2088-8708
960
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BIOGRAPHIES OF AUTHORS
Daniel Silli Bataona is currently working as Lecturer, Department of Electrical Engineering,
Computer Technology and Network, State Polytechnic of Kupang, East Nusa Tenggara, Indonesia.
He received a Master degree in Informatics from Bandung Institute of Technology, West Java,
Indonesia, in 2014. His research area are Computer Network and Software Engineering.
He published 6 research papers in international journals and conferences
Rinaldi Munir, is currently working as Associate Professor, School of Electrical Engineering and
Informatics, Bandung Institute of Technology, West Java, Indonesia. He holds Ph.D in School of
Electrical Engineering and Informatics, Bandung Institute of Technology, Indonesia. His research
area are Cryptography, Image Processing, Watermarking, Numerical Methods, and Algorithm.
He published 20 research papers in international journals and conferences.
Tutun Juhana, is currently working as Associate Professor, School of Electrical Engineering and
Informatics, Bandung Institute of Technology, West Java, Indonesia. He holds Ph.D in School of
Electrical Engineering and Informatics, Bandung Institute of Technology, Indonesia. His research
area are Telecommunication, Computer Network, Ad-Hoc Networkn and Network Security.
He published 20 research papers in international journals and conferences.
Gloria Manulangga, is currently working as Lecturer, Department of Electrical Engineering,
Computer Technology and Network, State Polytechnic of Kupang, East Nusa Tenggara, Indonesia.
She received a Master degree in Technology Management from Sepuluh November Institute of
Technology, East Java, Indonesia, in 2007. His research area are Infromation System and data
Mining. She published 9 research papers in international journals and conferences.
Jemsrado Sine, is currently working as Lecturer, Department of Electrical Engineering, Computer
Technology and Network, State Polytechnic of Kupang, East Nusa Tenggara, Indonesia.
He received a Master degree in Computer Engineering from Gadjah Mada University, Central
Java, Indonesia, in 2011. His research area are DSS and Telecommunication. He published 3
research papers in international journals and conferences.

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