The document presents a method for conducting surveys using a portable server based on the Raspberry Pi, aiming to facilitate data collection in areas with unreliable internet access. It discusses the advantages of this approach, including reduced manual labor and instantaneous statistical results, while also exploring resource usage and stress testing outcomes. The authors conclude that further research is needed for real-world implementation and potential performance improvements.

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Introduction Method Simulation Conclusion and Future Work
Hand Carry Data Collecting Through
Questionnaire and Quiz Alike on Crowds Using
Mini computer Raspberry Pi
Fajar Purnama, Muhammad Bagus Andra, Hendarmawan,
Tsuyoshi Usagawa, Masahiro Iida
Computer Science and Electrical Engineering, Kumamoto University
fajar@st.cs.kumamoto-u.ac.jp, bagus@st.cs.kumamoto-u.ac.jp,
hendarmawan@st.cs.kumamoto-u.ac.jp, tuie@cs.kumamoto-u.ac.jp,
iida@cs.kumamoto-u.ac.jp
10 June 2017
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

2. 2/22
Introduction Method Simulation Conclusion and Future Work
Outline
Introduction
Method
Simulation
Conclusion and Future Work
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

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Introduction Method Simulation Conclusion and Future Work
Technical Methods of Survey
Surveys has been often used to access other peoples thoughts, opinions, and
feelings. Simply, it is one of many existing methods to gain information.
Conventional Paper Based Method
https://static.pexels.com/photos/159353/
survey-opinion-research-voting-fill-159353.jpeg
Modern Online Based Method
https://upload.wikimedia.org/wikipedia/
commons/thumb/1/1b/Online Survey Icon
or logo.svg/1024px-Online Survey Icon or logo.svg.png
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

4. 4/22
Introduction Method Simulation Conclusion and Future Work
Motivation
People
Most people owns computer devices.
which favors to modern online based method due to its automations
Problem
Internet connections are still unreliable.
usually in most developing countries (Monmonthe., Win, T., Oo, M, Z., & Usagawa, T.
(2016). Students Ereadiness for Elearning at Two MajorTechnological Universities in Myanmar. In Seventh
International Conference on Science andEngineering (pp. 299-303). Yangon, Myanmar)
online based survey cannot be used and revert to paper based survey
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

5. 5/22
Introduction Method Simulation Conclusion and Future Work
Proposal
Make a portable server (hand carry server) and ask the participants
to connect to the local survey site. (Bring the server to them)
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

6. 6/22
Introduction Method Simulation Conclusion and Future Work
Hypothesis
The handcarry server:
will reduce manual labor
have resource limitation
have service limitation
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

7. 7/22
Introduction Method Simulation Conclusion and Future Work
Hand Carry Server Specification
Raspberry Pi 2 Model B $30
Resources:
A 900MHz quad-core ARM Cortex-A7 CPU
1 Giga Byte (GB) Random Access Memory (RAM)
Video Core IV 3D graphics cire
Physical aspects:
Size of 85.60 mm 56.5 mm (3.370 in 2.224 in)
Weight of 45g
Others:
Micro Serial Digital (SD) card slot
4 Universal Serial Bus (USB) ports
Ethernet Port
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

8. 8/22
Introduction Method Simulation Conclusion and Future Work
Transforming to Hand Carry Server
Insert an Operating System (OS) (here is Raspbian).
Install a Hotspot Module (here is Hostapd).
Install a Dynamic Host Configuration Protocol (DHCP)
Server (here is udhcpd).
Install a Webserver and Database Server (here is Apache2 and
MySQL).
Install Limesurvey Content Management System (CMS).
Optional install Domain Name System (DNS) Server and
Iptables for landing page.
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

9. 9/22
Introduction Method Simulation Conclusion and Future Work
Hypothesis
The handcarry server:
will reduce manual labor
have resource limitation
have service limitation
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

10. 10/22
Introduction Method Simulation Conclusion and Future Work
Survey Labor Simulation
A survey of MOOC Readiness containing 30 questionnaire items.
The number of participants is 30.
Preparation Stage.
Creating the questionnaire.
Printing the questionnaire (for paper based).
Responding Stage
Handing the questionnaire to participants.
Answering session.
Collecting the responses.
Post Survey Stage
Inputing responses to the database (for paper based).
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

11. 11/22
Introduction Method Simulation Conclusion and Future Work
Survey Settings
Responses are anonymous.
Cookies are used for duplication control.
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

12. 12/22
Introduction Method Simulation Conclusion and Future Work
Labors
Preparation: no significant difference.
Responding: no significant difference.
Post Survey:
Paper-based: needs to input response into database.
Hand-carry-server: automatic and can do any analysis.
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

13. 13/22
Introduction Method Simulation Conclusion and Future Work
Hypothesis
The handcarry server:
will reduce manual labor
have resource limitation
have service limitation
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

14. 14/22
Introduction Method Simulation Conclusion and Future Work
Resources Usage
Power delivery of 4.6 watt hour (low cost):
Whole survey process: 39 minutes.
Power bank: 20000 miliampere hours, 5 volts.
Power bank indicater: from 100% to 97%.
In this condition is should be able to last 1300
minutes ( 21 hours).
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

15. 15/22
Introduction Method Simulation Conclusion and Future Work
Resources Usage
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

16. 16/22
Introduction Method Simulation Conclusion and Future Work
Hypothesis
The handcarry server:
will reduce manual labor
have resource limitation
have service limitation
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

17. 17/22
Introduction Method Simulation Conclusion and Future Work
Stress Testing
Stress testing application: Funkload
Number of virtual users up to: 100
Testing: attempting survey
Tested: response time
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

18. 18/22
Introduction Method Simulation Conclusion and Future Work
Stress testing up to 100 virtual users. The larger the concurrent
users and questionnaire items, the longer the response time.
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

19. 19/22
Introduction Method Simulation Conclusion and Future Work
Advantage
Simple, low power cost and requires less manual labors.
Instantaneous statistical result and able to do any analysis.
Screenshot:
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

20. 20/22
Introduction Method Simulation Conclusion and Future Work
Conclusion and Future Work
Conclusion
A method of survey using hand carry servers are presented.
The simulation results gives insights to surveyors of how much
the hand carry server can handle.
Low power cost but exhausts CPU and memory.
The response time is affected by the size of conccurent users
and questionnaire contents.
Future Work
This work is only experimental and real implementation is
necessary to complete this research.
Performance can be further increased.
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

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Introduction Method Simulation Conclusion and Future Work
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017

22. 22/22
Introduction Method Simulation Conclusion and Future Work
Thank you
Any comments or questions?
Presented by: Fajar Purnama Computer Science and Electrical Engineering, Kumamoto University
International Mobile Learning Festival (IMLF) 2017