Judul: Nilai Fisik dan Sosial Vegetasi Pekarangan dalam Penurunan Konsentrasi Partikel Debu di Desa Gunung Putri Kecamatan Gunung Putri, Kabupaten Bogor
Abstrak: Rapid developments in various fields, have caused both positive and negative impacts, such as decline environmental quality. Gunung Putri Village as one of the villages located in an overcrowded area of settlement, industry and transportation, is very vulnerable to communal health problems especially due to Suspended Particulate Matter (SPM). One effort to anticipate decline in health quality is through conservation programme for better environmental health. This program could be initiated from the people’s closest environment by improving homegarden quality. Apart from the physical factors of the homegarden, its quality is also influence by the owner’s attitude. Therefore, study of the effects of homegarden and community attitudes on homegarden should be conducted. This research has the objective to determine the physical and social values of homegarden vegetation that influenced the reduction of SPM value on air, and factors related to community attitudes and the functions and existence of homegarden. This research would provide information on the importance of homegarden in reducing air pollution due to SPM, thus it is expected that community could be aware and participated in homegarden maintenance, as well as to provide inputs to related institutions as references for prevention of air pollution by SPM. The research was conducted on June 2009 – August 2009 in Gunung Putri Village Bogor and Water an Air Laboratory of SEAMEO Biotrop Bogor. Based on shading criteria, sample plots were divided into three groups; Dense Shade (SR), Sufficient Shade (R) and Least Shade (TR). Control plot ( K)comprised of plot with no vegetation. Measurement of dust sample analysis then carried out followed by study on community attitudes on the functions and the existence of homegarden. Several parameters that were expected to influence the value of SPM were total area of crown projection, Leaf Area Index (LAI) and height of tree, while factors influencing attitudes were age, formal education, occupation and duration of living on the area. Research results showed that SPM on air experienced a decline with increasing vegetation shade. Height of tree and LAI were negatively correlated with SPM values, meaning in an increase of LAI values and tree height would reduce the value of SPM. Tree height significantly effect (P-value = 0.021 < α) on reducing SPM by (y = 920.4 -59.66 x) and LAI also has significantly effect (P-value = 0.092 < α) in reducing SPM by (y = 2762 – 944.8 x). The majority of respondents (76.74%) had positive attitudes, meaning that they understand and directly felt the benefit of homegarden, while the rest had average value of attitudes. Attitudes directly influence by the age, duration of living in the area and occupation. The older a respondents get, the more positive attitudes he/she showed. Similar results were obtained for duration of living. The occupation influences attitude based on direct interaction with SPM.
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Judul: Valuasi ruang terbuka hijau tipe pekarangan berdasarkan pendekatan biaya kesehatan (Studi kasus Desa Gunung Putri, Kecamatan Gunung Putri, Kabupaten Bogor)
Abstrak: The rapidly developed industry cause positive and negative impact to environment. One of the negative impacts is air pollution. Air pollution causes respiratory diseases. It makes goverment spend much fund for health subsidy. Health subsidy can be reduce by building green open space which would reduce the pollutant of environmental. Home garden is one of green open space type. Currently the existence home garden decrease unstead of it is contribution toward the quality at the environments. Gunung Putri village is one of village located industrial area. It cause of air pollution. Impact of air pollution in this village will cause economic loss. This fee are the cost of medical treatment and the cost of prevention disease and reduced income due to air pollution Therefore, study of valuation of home garden based on health cost must be done. This research was conducted to determine the value of home garden type of green open space based on health cost approach and to determine the public perception of the existence of the home garden. The results could be useful for the society and goverment in spatial management. This research also provides information to the public about the economic value of home garden so that the existence of the home garden can be maintained. The research was conducted in July - August 2012 in Gunung Putri village, Gunung Putri subdistrict, Bogor regency. The research was conducted through interview with respondents about the costs to be incurred due to air pollution.This fee are the cost of medical treatment and the cost of prevention disease and reduced income due to air pollution. The reseach showed that the home garden is Gunung Putri Village was able to provide benefit cost as much Rp 1.863.606 per capita per year. It will continue to increase because the value of these each year will continue to be supplied by home garden to quality of environments. This value indicates the amount of the subsidy cost to be incurred by the government every year. People already know the benefits of being trees in the home garden.This knowledge has not been accompanied by the attitude of the villagers to keep the existence of the home garden.
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Judul: Konstruksi Hukum Grup Kurva Eliptik Atas F3m
Abstrak: Elliptic curves upon F3m can be divided in two cases, i.e. supersingular and nonsupersingular case. Based on group laws on elliptic curves, a new arithmetic upon F3m can be formulated as an addition process of two random points on the curve. This addition process can then be applied to the ElGamal algorithm.
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