to 10 PM for several days at the starting points. For waste composition analysis, you need to work for a long time. Through sharing....we can establish a confidential relationship with each other. So the first important factor is the honesty. In our survey we need to manage many workers and get cooperation from targets. To keep the data quality you need to prepare guideline for targets and also workers. I also need to monitor their activities. In case we form programs, we need to discuss a lot of things that established. Especially for social studies, communication skill is also necessary. To get the information basis for surveys, you need to negotiate with relevant authorities. To invite targets you need to explain the objectives and request in a short time and get agreement from them. To manage the workers, you need to monitor and control their activity and properly educate them to improve in case you form programs. So if you keep five factors: high motivation, high interest, high patience, high honesty and high communication skill, you can do an ideal research one. I told my students: you must be proud of your study, consider what you need to do and manage your own one. Luckily, I have two motivated Vietnamese students, and I believe we share the pride for our own ones.

Dr. Kawai: One of the most important key words for our research is reliable data. We try to collect reliable data. For example, Dr. Matsui has just mentioned on five factors for the research, and if we do not have five factors, we can not collect the reliable data. We always ask our Vietnamese counterpart to get the reliable data. Of course it is not easy to collect such data but it is necessary or fundamental to develop a master plan or action plan of MWS management which contributes to improve the current situation of MSW management. Finally, I would like to ask the panelists about your next step of your research or which topic you would like to implement in the near future.

Dr. Abe: For my next step and for my future study, I really want to implement same workshop in different cities, different regions, and different areas. For example, we had workshop in Hanoi last year, and I am very interested in what I could learn if I can implement the same workshop in Ho Chi Minh city, or in smaller cities and rural areas. The difficulty and challenge is clearly the communication. I can not speak Vietnamese, and people in many rural areas, I assume that they do not speak English. So the communication would be the biggest challenge and I do need the collaboration with local experts. That's my next idea.

Dr. Harada: I have many things to do in the near future but the most important thing for the next steps is to make a good scenario to manage the septic tanks together with relevant issues, for example the sewerage development. As I mentioned, the management a scenario is very different in the area with or without the sewerage. Most of the public organizations do not have good enough visions how on-site sanitation facilities collaborate with sewerage development. This is very closely connected to how sludge management collaborates with SWM for efficient resources recovery and also efficient disposal. May be this is one of our big next challenges.