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PROCEEDINGS OF ASIAN CONFERENCE ON REMOTE SENSING ACRS <strong>2007</strong><br />
DEVELOPING ENVIRONMENTAL INFORMATION SYSTEM USING WEBGIS<br />
TECHNOLOGY OF A CASE STUDY IN THE CAN THO CITY, VIETNAM<br />
Bui Ta L<strong>on</strong>g 1 , Du<strong>on</strong>g Ngoc Hieu 2 , Luu Minh Tung 1<br />
1 Institute <str<strong>on</strong>g>of</str<strong>on</strong>g> Envir<strong>on</strong>ment and Resources,<br />
2 Hochiminh city university <str<strong>on</strong>g>of</str<strong>on</strong>g> technology,<br />
Vietnam nati<strong>on</strong>al university <str<strong>on</strong>g>of</str<strong>on</strong>g> Hochiminh city<br />
KEY WORDS: Envir<strong>on</strong>mental Informati<strong>on</strong> System, WebGIS, envir<strong>on</strong>mental m<strong>on</strong>itoring data,<br />
integrati<strong>on</strong>, s<str<strong>on</strong>g>of</str<strong>on</strong>g>tware.<br />
ABSTRACT: The strategy <str<strong>on</strong>g>of</str<strong>on</strong>g> informati<strong>on</strong> technology applicati<strong>on</strong> and development for the branch<br />
<str<strong>on</strong>g>of</str<strong>on</strong>g> resources and envir<strong>on</strong>ment in Viet Nam is aiming at the purpose <str<strong>on</strong>g>of</str<strong>on</strong>g> computerizing the<br />
administrative system <str<strong>on</strong>g>of</str<strong>on</strong>g> the Government regarding natural resources and envir<strong>on</strong>ment protecti<strong>on</strong><br />
for a preparati<strong>on</strong> to E-Government, which may facility people, organizati<strong>on</strong> to approach<br />
informati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> natural resources and envir<strong>on</strong>ment.<br />
In order to achieve the above target, it is must be build and integrate databases <str<strong>on</strong>g>of</str<strong>on</strong>g> all fields<br />
related to natural resources and envir<strong>on</strong>ment as well as ensure the nati<strong>on</strong>al standards <str<strong>on</strong>g>of</str<strong>on</strong>g> data.<br />
Besides, it is should be also build computer tools to support the informati<strong>on</strong> storage and share.<br />
This paper is to introduce some results <str<strong>on</strong>g>of</str<strong>on</strong>g> research in building WINSCAN S<str<strong>on</strong>g>of</str<strong>on</strong>g>tware (Web<br />
gIs envir<strong>on</strong>ment informati<strong>on</strong> management S<str<strong>on</strong>g>of</str<strong>on</strong>g>tware for Can Tho). The purpose <str<strong>on</strong>g>of</str<strong>on</strong>g> WINSCAN is to<br />
provide necessary informati<strong>on</strong> for envir<strong>on</strong>ment project manager <str<strong>on</strong>g>of</str<strong>on</strong>g> researchers, organizati<strong>on</strong> and<br />
legal authorities. WINSCAN plays the role <str<strong>on</strong>g>of</str<strong>on</strong>g> public informati<strong>on</strong> center for improving<br />
understanding <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>ment to people. The advantage <str<strong>on</strong>g>of</str<strong>on</strong>g> WINSCAN is the applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
WebGIS technology to display envir<strong>on</strong>mental informati<strong>on</strong> linking to electr<strong>on</strong>ic map with <strong>remote</strong><br />
accessibility<br />
The paper carried out for the past time at the Vietnam nati<strong>on</strong>al university <str<strong>on</strong>g>of</str<strong>on</strong>g> Hochiminh city,<br />
under funding support <str<strong>on</strong>g>of</str<strong>on</strong>g> the Can Tho envir<strong>on</strong>mental m<strong>on</strong>itoring center.<br />
1 INTRODUCTION<br />
Nowadays, Web GIS is a prospective research and applicati<strong>on</strong> directi<strong>on</strong> in Geographic<br />
Informati<strong>on</strong> System (GIS) and represents an important advancement over the traditi<strong>on</strong>al destop GIS<br />
(to be installed in pers<strong>on</strong>al computer). In developed countries, Web GIS was applied in<br />
governmental agencies, educati<strong>on</strong>al instituti<strong>on</strong>s. Web GIS based s<str<strong>on</strong>g>of</str<strong>on</strong>g>tware have been built for the<br />
satisfacti<strong>on</strong> to the diversified needs in life.<br />
The increasing popularity <str<strong>on</strong>g>of</str<strong>on</strong>g> the internet, from <strong>on</strong>-line surfing to e-commerce to interactive<br />
chatting, has made Internet anintegral part <str<strong>on</strong>g>of</str<strong>on</strong>g> our society. Internet Gateways are mostly available<br />
anywhere and the diversified c<strong>on</strong>tents <str<strong>on</strong>g>of</str<strong>on</strong>g> World Wide Web (WWW) made the accessibility,<br />
informati<strong>on</strong> exchange and development easier. Many scientific applicati<strong>on</strong>s, publicati<strong>on</strong>s and other<br />
sectors were modified and changed for the suitability to Internet Applicati<strong>on</strong>s. In such a manner,<br />
Internet also makes the change <strong>on</strong> storage, share and applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> GIS.<br />
It might be said that Internet enables the GIS users to easily access to GIS data from various<br />
data supply sources. In additi<strong>on</strong>, Internet enables the popularity <str<strong>on</strong>g>of</str<strong>on</strong>g> the results <str<strong>on</strong>g>of</str<strong>on</strong>g> GIS analysis and<br />
spatial informati<strong>on</strong> to readers at an amount larger than traditi<strong>on</strong>al GIS. Through Web GIS<br />
1
PROCEEDINGS OF ASIAN CONFERENCE ON REMOTE SENSING ACRS <strong>2007</strong><br />
technology, users may be capable <str<strong>on</strong>g>of</str<strong>on</strong>g> a direct access to spatial informati<strong>on</strong> or informati<strong>on</strong> browse<br />
and links from Websites at their homes. Also, every<strong>on</strong>e may set up an <strong>on</strong>line browse or raising<br />
<strong>on</strong>line analysis questi<strong>on</strong>s and at free <str<strong>on</strong>g>of</str<strong>on</strong>g> charge <str<strong>on</strong>g>of</str<strong>on</strong>g> spatial subjects and without any investment for<br />
any GIS S<str<strong>on</strong>g>of</str<strong>on</strong>g>tware.<br />
In envir<strong>on</strong>mental sector, up<strong>on</strong> nearly 20 years (1980-1999), Envir<strong>on</strong>ment Protecti<strong>on</strong><br />
Angency <str<strong>on</strong>g>of</str<strong>on</strong>g> the United States <str<strong>on</strong>g>of</str<strong>on</strong>g> America developed the envir<strong>on</strong>mental informati<strong>on</strong> system<br />
ENVIROFACT that enabled the display <str<strong>on</strong>g>of</str<strong>on</strong>g> the envir<strong>on</strong>mental informati<strong>on</strong> in associated with map <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
which the <strong>remote</strong> access permitted. The results deemed to be the motivati<strong>on</strong> for several studies<br />
deployed in many countries worldwide and am<strong>on</strong>gst are Vietnam.<br />
2 REVIEW OF PREVIOUS STUDIES<br />
For the past time, the studies <str<strong>on</strong>g>of</str<strong>on</strong>g> informati<strong>on</strong> technology applicati<strong>on</strong> in envir<strong>on</strong>mental<br />
management were deployed at some institutes, research centers and big universities in Vietnam.<br />
Although all in the initial phase, the results <str<strong>on</strong>g>of</str<strong>on</strong>g> the study were applied into envir<strong>on</strong>mental<br />
management assignment and c<strong>on</strong>tributing to increase the efficacy for state administrati<strong>on</strong><br />
assignment in respect <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>ment. Am<strong>on</strong>gst there were informatics products CAP / [1]-[2],[5],<br />
www.envim.com.vn/ and ENVIM /[4]-[5]. Technology for carrying out such s<str<strong>on</strong>g>of</str<strong>on</strong>g>tware could be<br />
briefed as a integrati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> Geographic Informati<strong>on</strong> System (GIS), envir<strong>on</strong>mental database and<br />
mathematical models processing envir<strong>on</strong>mental data into a sole tool for user.<br />
In the work [3], an informati<strong>on</strong> model proposed, to be called INSEM (Informati<strong>on</strong> System<br />
for supporting Envir<strong>on</strong>mental Management), this is an integrated informati<strong>on</strong> system assisting<br />
envir<strong>on</strong>ment management assignment <str<strong>on</strong>g>of</str<strong>on</strong>g> which database management system is selected as MS<br />
SQL Server (managing m<strong>on</strong>itoring data <strong>on</strong> water envir<strong>on</strong>ment, air, meteorology, hydrology, and so<br />
<strong>on</strong>), GIS data inherited traditi<strong>on</strong>al s<str<strong>on</strong>g>of</str<strong>on</strong>g>tware such as mapinfo, arcview and transport models <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
evaluating air and surface water polluti<strong>on</strong>. INSEM has targets facilitating the envir<strong>on</strong>mental<br />
informati<strong>on</strong> interpretati<strong>on</strong>; the assistance <strong>on</strong> the analysis <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>ment informati<strong>on</strong>; the supply <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
tools for analysis, and the assessment <str<strong>on</strong>g>of</str<strong>on</strong>g> various scenarios.<br />
In work [4] executed the upgrade <str<strong>on</strong>g>of</str<strong>on</strong>g> INSEM into a new versi<strong>on</strong> called ENVIM<br />
(Envir<strong>on</strong>mental Informati<strong>on</strong> Management s<str<strong>on</strong>g>of</str<strong>on</strong>g>tware). C<strong>on</strong>ceptual model <str<strong>on</strong>g>of</str<strong>on</strong>g> ENVIM is presented <strong>on</strong><br />
Fig. 1.<br />
ENVIM integrates databases <strong>on</strong> envir<strong>on</strong>mental m<strong>on</strong>itoring data with traditi<strong>on</strong>al GIS layers<br />
such as the layers <str<strong>on</strong>g>of</str<strong>on</strong>g> administrati<strong>on</strong>, rivers and streams, etc. The key modules <str<strong>on</strong>g>of</str<strong>on</strong>g> ENVIM including:<br />
data management module; module <str<strong>on</strong>g>of</str<strong>on</strong>g> analysis, query and report preparati<strong>on</strong>; module model (Fig. 2);<br />
WEB module, ENVIM enables the prompt performance <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>mental reports with the<br />
comparis<strong>on</strong> to Vietnamese envir<strong>on</strong>ment standards. In additi<strong>on</strong>, the s<str<strong>on</strong>g>of</str<strong>on</strong>g>tware enables the emulative<br />
calculati<strong>on</strong> giving the influences <str<strong>on</strong>g>of</str<strong>on</strong>g> socio-ec<strong>on</strong>omic activities over envir<strong>on</strong>ment polluti<strong>on</strong> within a<br />
regi<strong>on</strong>al scale.<br />
2
PROCEEDINGS OF ASIAN CONFERENCE ON REMOTE SENSING ACRS <strong>2007</strong><br />
Air dispersi<strong>on</strong> model (Gauss,Berliand)<br />
Height<br />
Diameter<br />
Emissi<strong>on</strong> exit speed<br />
Dispersi<strong>on</strong><br />
parameters<br />
Wind speed<br />
Air temperature<br />
Meteorological<br />
data<br />
Figure 1. C<strong>on</strong>ceptual model <str<strong>on</strong>g>of</str<strong>on</strong>g> ENVIM<br />
Transport mathematical model for pollutants<br />
Stack<br />
parameters<br />
Data processing<br />
Interface for parameter opti<strong>on</strong>s<br />
Result representati<strong>on</strong> <strong>on</strong> GIS<br />
3<br />
Water quality simulati<strong>on</strong> model (Qual2K)<br />
Discharge<br />
parameter<br />
Hydrological<br />
parameter<br />
Volume<br />
Pollutant c<strong>on</strong>centrati<strong>on</strong><br />
Start time<br />
Temperatute exit<br />
gas Computing grid …...<br />
Figure 2. Envir<strong>on</strong>ment quality model that integrated in ENVIM.<br />
Width<br />
Depth<br />
Volume rate flow
PROCEEDINGS OF ASIAN CONFERENCE ON REMOTE SENSING ACRS <strong>2007</strong><br />
3 APPLICATION MODEL PROPOSAL<br />
In Vietnam, <strong>on</strong>e <str<strong>on</strong>g>of</str<strong>on</strong>g> the major restricti<strong>on</strong>s <strong>on</strong> building up the policies, decisi<strong>on</strong> making with<br />
respect to envir<strong>on</strong>ment in Vietnam is the shortage <str<strong>on</strong>g>of</str<strong>on</strong>g> reliable envir<strong>on</strong>mental informati<strong>on</strong>/data or<br />
informati<strong>on</strong> to be untimely supplied or not to be properly processed. All these reveal the<br />
informati<strong>on</strong> technology study works, the establishment <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>mental database in Vietnam<br />
becoming urgent.<br />
To be a province directly under the Vietnamese goverment in 2004, Can Tho city currently<br />
is the center <str<strong>on</strong>g>of</str<strong>on</strong>g> industry, commerce, tourism, educati<strong>on</strong> and science-technology <str<strong>on</strong>g>of</str<strong>on</strong>g> the Mek<strong>on</strong>g delta<br />
plain regi<strong>on</strong>, the important transport hub regi<strong>on</strong>ally and internati<strong>on</strong>ally. However, envir<strong>on</strong>mental<br />
management assignment in Can Tho City has not yet been computerized to keep pace with the<br />
requirement <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>ment management at this stage. Such a management method reveals a lot <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
limitati<strong>on</strong>s <strong>on</strong> exploiting data and making the planning, the variati<strong>on</strong> m<strong>on</strong>itoring and the<br />
envir<strong>on</strong>mental report preparati<strong>on</strong> difficult.<br />
Database<br />
<strong>on</strong> WebServer<br />
CANTHO<br />
Physical geography<br />
Envir<strong>on</strong>ment policy<br />
Envir<strong>on</strong>ment state<br />
Ec<strong>on</strong>imic -society<br />
ENTERPRISE<br />
Waste<br />
4<br />
GIS<br />
Industry and Envir<strong>on</strong>ment<br />
Goverment envir<strong>on</strong>ment<br />
policy<br />
ENVIM database GIS database<br />
ENVIM Applicati<strong>on</strong> Officer<br />
WEBGIS envir<strong>on</strong>ment<br />
Public User<br />
Figure 3. C<strong>on</strong>ceptual model for WINSCAN s<str<strong>on</strong>g>of</str<strong>on</strong>g>tware<br />
MONITORING<br />
Within the scope <str<strong>on</strong>g>of</str<strong>on</strong>g> performing the project “The applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> Geographic Informati<strong>on</strong><br />
System in m<strong>on</strong>itoring envir<strong>on</strong>ment <str<strong>on</strong>g>of</str<strong>on</strong>g> Can Tho City”, the authors <str<strong>on</strong>g>of</str<strong>on</strong>g> this article proposed the socalled<br />
envir<strong>on</strong>mental informati<strong>on</strong> system WINSCAN (Web gIs eNvir<strong>on</strong>mental informati<strong>on</strong><br />
technology S<str<strong>on</strong>g>of</str<strong>on</strong>g>tware for CAN tho). WINSCAN is the envir<strong>on</strong>mental informati<strong>on</strong> system for the<br />
storage, management and analysis <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>mental informati<strong>on</strong> and data in relati<strong>on</strong> to Can Tho
PROCEEDINGS OF ASIAN CONFERENCE ON REMOTE SENSING ACRS <strong>2007</strong><br />
city. Purpose <str<strong>on</strong>g>of</str<strong>on</strong>g> WINSCAN is to provide the required informati<strong>on</strong> to envir<strong>on</strong>mental project<br />
managers or researchers, legislati<strong>on</strong> authorities and organizati<strong>on</strong>s. WINSCAN may also play the<br />
role <str<strong>on</strong>g>of</str<strong>on</strong>g> a center for public communicati<strong>on</strong> in respect <str<strong>on</strong>g>of</str<strong>on</strong>g> the enhancement <str<strong>on</strong>g>of</str<strong>on</strong>g> the awareness <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
envir<strong>on</strong>ment. WINSCAN could be built, maintained and allocated through various communicati<strong>on</strong><br />
techniques / fig. 3/. The key modules in WINSCAN s<str<strong>on</strong>g>of</str<strong>on</strong>g>tware including:<br />
- Envir<strong>on</strong>mental m<strong>on</strong>itoring data module: liable to the management <str<strong>on</strong>g>of</str<strong>on</strong>g> all data pertaining<br />
to envir<strong>on</strong>ment m<strong>on</strong>itoring such air, surface water, underground water, waste water,<br />
emissi<strong>on</strong>s polluti<strong>on</strong> m<strong>on</strong>itoring.<br />
- Envir<strong>on</strong>mental m<strong>on</strong>itoring report module: automatically releases the statistical reports <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
m<strong>on</strong>itoring data in various criteria.<br />
- Enterprise management module: managing enterprises, producti<strong>on</strong> situati<strong>on</strong>, utility<br />
situati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> resources, chemicals and fuel, to name just a few. This module is also gather and<br />
make the reports in terms <str<strong>on</strong>g>of</str<strong>on</strong>g> discharge and exhausti<strong>on</strong> situati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> enterprises, discharge and<br />
exhausti<strong>on</strong> situati<strong>on</strong> in excessive <str<strong>on</strong>g>of</str<strong>on</strong>g> Vietnam envir<strong>on</strong>mental standards for enterprises.<br />
- News management module: managing news <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>mental management, natural<br />
resources, political – socio – ec<strong>on</strong>omic news and goverment regulati<strong>on</strong>s in terms <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
envir<strong>on</strong>ment.<br />
- Administrati<strong>on</strong> management module: managing the subjects participating in use <str<strong>on</strong>g>of</str<strong>on</strong>g> the<br />
system, administrator account supply, and so forth.<br />
Figure 4. Main interface <str<strong>on</strong>g>of</str<strong>on</strong>g> WINSCAN<br />
The new features <str<strong>on</strong>g>of</str<strong>on</strong>g> the WINSCAN in comparis<strong>on</strong> with our previously products are indicated as<br />
follows:<br />
5
PROCEEDINGS OF ASIAN CONFERENCE ON REMOTE SENSING ACRS <strong>2007</strong><br />
- Web GIS technologies applied into WINSCAN enable the integrati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>mental<br />
informati<strong>on</strong> data flows and providing the prompt access to websites <str<strong>on</strong>g>of</str<strong>on</strong>g> the program.<br />
- The essence <str<strong>on</strong>g>of</str<strong>on</strong>g> the WINSCAN system is the Geographic Informati<strong>on</strong> System (GIS)<br />
c<strong>on</strong>taining envir<strong>on</strong>mental data changing in line with time, the user may see and access<br />
websites with map in associated with envir<strong>on</strong>mental informati<strong>on</strong> such as m<strong>on</strong>itoring sites <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
water and air polluti<strong>on</strong> and sewage sources, and so <strong>on</strong>.<br />
- The design approach in module enables the management <str<strong>on</strong>g>of</str<strong>on</strong>g> variety <str<strong>on</strong>g>of</str<strong>on</strong>g> informati<strong>on</strong> (but<br />
c<strong>on</strong>cerning to envir<strong>on</strong>ment) helps local envir<strong>on</strong>ment managers update and exchange<br />
informati<strong>on</strong> and data easily.<br />
- WINSCAN provides the direct accessibility to the spatial informati<strong>on</strong> or informati<strong>on</strong> browse<br />
and links from the web browse. The user may seek the <strong>on</strong>line informati<strong>on</strong> relevant to<br />
m<strong>on</strong>itoring as well as enterprise in the area <str<strong>on</strong>g>of</str<strong>on</strong>g> district or commune, etc. This soluti<strong>on</strong> helps<br />
user get many <strong>on</strong>line answers and at free <str<strong>on</strong>g>of</str<strong>on</strong>g> charge <str<strong>on</strong>g>of</str<strong>on</strong>g> spatial subjects without any cost to be<br />
spent for any GIS s<str<strong>on</strong>g>of</str<strong>on</strong>g>tware.<br />
4 CONCLUSION<br />
In this study, WINSCAN is developed to serve envir<strong>on</strong>ment managers in respect <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
employing envir<strong>on</strong>mental informati<strong>on</strong> more effectively by the applicati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> WebGIS technologies.<br />
The product <str<strong>on</strong>g>of</str<strong>on</strong>g> the project helps envir<strong>on</strong>ment management authority to get a modern<br />
management instrument. The decisi<strong>on</strong>s to be adopted in the assistance <str<strong>on</strong>g>of</str<strong>on</strong>g> WINSCAN will be more<br />
rapidly and better to the extent <str<strong>on</strong>g>of</str<strong>on</strong>g> scientific foundati<strong>on</strong>. The project performance will help enhance<br />
the managerial ability through the breakthrough in new thoughts.<br />
Development orientati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> WINSCAN is the integrati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> several envir<strong>on</strong>mental data and<br />
the provisi<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>mental informati<strong>on</strong> to various subjects in need <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>mental<br />
informati<strong>on</strong>. Furthermore, WINSCAN is in the need <str<strong>on</strong>g>of</str<strong>on</strong>g> more opini<strong>on</strong>s <str<strong>on</strong>g>of</str<strong>on</strong>g> government in all levels in<br />
Mek<strong>on</strong>g delta provinces so that it would become an envir<strong>on</strong>mental informati<strong>on</strong> system at regi<strong>on</strong>al<br />
scale.<br />
5 REFERENCES<br />
1. Bui Ta L<strong>on</strong>g, 1999. Building the computerized tool for evaluating the impact <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
anthropogenic factors <strong>on</strong> air envir<strong>on</strong>ment. Scientific and technical hydro-meteorological<br />
journal, Vol. 2 (446), pp. 21 – 26.<br />
2. Bui Ta L<strong>on</strong>g, 1999. Using GIS technology in modeling <str<strong>on</strong>g>of</str<strong>on</strong>g> ecological processes. Scientific<br />
and technical hydro-meteorological journal, Vol. 12 (468), pp. 34 – 41.<br />
3. Bui Ta L<strong>on</strong>g, Le Thi Quynh Ha, Luu Minh Tung, 2004. Development <str<strong>on</strong>g>of</str<strong>on</strong>g> INSEM s<str<strong>on</strong>g>of</str<strong>on</strong>g>tware<br />
for supporting the m<strong>on</strong>itoring <str<strong>on</strong>g>of</str<strong>on</strong>g> envir<strong>on</strong>ment quality in Vietnam provinces and cities.<br />
Scientific and technical hydro-meteorological journal, Vol. 1 (517), pp. 10 – 19.<br />
4. Bui Ta L<strong>on</strong>g, Le Thi Quynh Ha, Luu Minh Tung, Vo Dang Khoa, 2005. Settting up an<br />
informati<strong>on</strong> system for envir<strong>on</strong>mental management at provincial level. Scientific and<br />
technical hydro-meteorological journal, Vol. 5 (533), pp. 31 – 40.<br />
5. Bui Ta L<strong>on</strong>g, 2006. Envir<strong>on</strong>mental Informati<strong>on</strong> System. Vietnam Nati<strong>on</strong>al University<br />
Hochiminh city publisher, 334 p.<br />
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