Electoral districts are an important component of the electoral system, as they have a significant impact on election results. Due to the uneven spatial distribution of electoral support political parties receive, district magnitude and the geography of electoral districts can have a decisive influence on the electoral viability of individual parties and candidates. Districting and redistricting are not a simple bureaucratic process but a politically very sensitive process with outcomes that can have far-reaching political consequences. Geoinformation tools can have a very important role in electoral district planning. In this article we aim to present the key advantages and disadvantages of their use. The presented results are derived from practical experience gained over the course of developing a new system of electoral districts in Slovenia.
Geografske informacijske sisteme lahko koristno uporabimo tudi na delovnih področjih, kjer nimamo na razpolago vseh ustreznih podatkov, metod za njihovo vrednotenje ter modeliranje. Takšen primer je tudi pomoč GIS pri iskanju možnih virov onesnaževanja na krasu. Razen redkih površinskih vodotokov (na fluviokrasu) se tam vode pretakajo po podzemlju. Zato moramo prisotnost krasa v zaledju površinskega vodotoka obravnavati na "poseben" način, pri čemer nam je GIS v veliko pomoč. GIS je v tem primeru dejansko podpora deduktivncmu pristopu k obravnavi problema. Z upoštevanjem "kraških predpostavk" glede možnega pretakanja podzemskih voda se območje možnih virov onesnaževanja znatno razširi preko meja površinskega porečja. Na podlagi vrednotenja upoštevanih predpostavk, podatkovnih slojev in njihovih medsebojnih relacij sva ločila tri "območja ogrožanja kvalitete vode" Otavščice. Ta lahko služijo za načrtovanje in izvajanje nadaljnjih ukrepov za rešitev problema. Izvajanje aplikacije na prenosnem osebnem računalniku omogoča njeno uporabo pri terenskih meritvah ter pri terenskem iskanju in popisovanju dejanskih virov onesnaževanja. V obravnavo je vključeno 255 kvadratnih kilometrov veliko območje jugozahodnega obrobja Ljubljanskega Barja (širša okolica porečja Otavščice, pritoka Borovniščice).
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