Judul: Kebijakan pengelolaan pencemaran udara Pb, Debu Dan Co dari sektor transportasi darat (Studi kasus pencemaran Pb, Debu Dan Co di Jalan Tol Cawangsemaggi Jakarta )
Abstrak: Along with the fast of development in the city, then the frequency of vehicles on the highway is also higher, which causes the level of exhaust emissions from vehicles is also increasing. Increased levels of vehicle exhaust emissions will spread into the surrounding area and as a result can disrupt public health. Development of transportation policies that are less well and did not pay attention to aspects of public health will certainly exacerbate the negative impacts. This study aims to (1) identify the spread of Pb and dust conditions that exist today, (2) analyze the distribution of Pb, dust and CO levels to develop environmental management on the impact of air pollution risk in relation to local public health, and formulate management policy directives regional environmental impact of air pollution. Methods of analysis used is descriptive method, laboratory analysis by Atomic Absorption Spectrophotometer (AAS) and gravimetric, and analysis of hierarchy process (AHP). Results showed that air pollution from motor vehicles such as carbon monoxide (CO), nitrogen dioxide (NO2), sulfur oxides (SO2), lead (Pb), dust, generally above the threshold exceeds the ambient air quality standards, especially noise = 75 dBA, carbon monoxide gas = 3292,5 μg/Nm³ and dust = 218,10 g/m³ on environmental quality standards. Pollutants is very dangerous to human life because it can cause disease. Pb in plants at 4,3 ppm, efforts to reduce levels of Pb and dust can be a limitation of the vehicle, entry restrictions, parking restrictions, regulating traffic zone, day without driving, cycling, application of new technologies, and planting vegetation. Pb in hair traffic police officers on duty during: 0,3 ppm five years, ten years of 0,6 ppm and 0,8 ppm fifteen years. Alternative policies that can be selected in the field of environmental management of the impact of air pollution in Jakarta is an age restriction of motor vehicles. The most influential factor is not feasible to use the vehicle first, second and third the existence of incentives or vegetation maintained disintive Green Open Space (RTH). Activities must be supervised by the government, in this case the Ministry of Health, Board of Transportation and the Environment Agency and the Police are the most important actor role in maintaining air quality in Jakarta.
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Judul: Evaluasi Dampak Hari Bebas Kendaraan Bermotor Terhadap Polutan Berdasarkan Konsentrasi dan Faktor Meteorologi di DKI Jakarta (Studi Kasus Jalan M.H. Thamrin-Jalan Jend. Sudirman)
Abstrak: One of the main problems at several cities in developing countries is air pollution, for example is Jakarta. The biggest source of air pollution comes from the transportation sector. The increasing number of motor vehicle every year in Jakarta will increase the air pollution. The parameters of gas pollutant from motor vehicle are dust particulate < 10μm (PM10), carbon monoxide (CO) and nitric oxide (NO). The Car Free Day Program (CFD) is held to recovery the air quality. The goal of this research are analyzing the trend of pollutant concentration, analyzing air quality at Jakarta from the Air Quality Index (AQI) and studying the impact of CFD program based on pollutant concentration & meteorology factor in Jakarta from 2006 to 2009. This research is conducted by using continued data perception result of air ambient, sampling the air at some location where CFD was held, and then compare the result with data perception from mobile station on workday, holiday and by the time CFD was held. According to the perception from 2006 to 2008, the air quality of the roadway in Jakarta can be categorized as “Good” for 45 days in 2006, 73 days in 2007 and 148 days int 2008. This result show the increase of air quality in Jakarta. The concentration of PM10, CO, and NO parameter had been lower during CFD, compared to workdays. The decreasing level of pollutant concentration during CFD in 2009 are 38%, 63%, and 71% for PM10, CO and NO respectively. The correlation between PM10 parameter with the wind speed is -0,737 – 0,919. The correlation between CO parameter with the wind speed is -0,054 – 0,512. Meanwhile, the correlation between NO parameter with the wind speed is -0,11 – 0,856. The result of this research indicates that the CFD program helps recovering the air condition of roadway in Jakarta especially at M.H. Thamrin street and Jend. Sudirman street.
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Judul: Konstruksi aritmetika kurva eliptik F(2m) supersingular dan non-supersingular untuk skema kunci publik ElGamal
Abstrak: Algoritme ElGamal adalah salah satu algoritme kunci publik dengan aritmetik modular p yang mempunyai struktur grip siklik Z(p). Tingkat keanaman algoritme ini terletak pada pemecahan masalah logaritme diskret dari Z(p). Akan tetapi, tingkat keamanan tadi tahun ke tahun semakin menurun yang disebabkan kemampuan pemecahan algoritme diskret semakin meningkat. Untuk memenuhi tingkat keamanan yang memadai dibutuhkan p yang cukup besar yang menyebabkan proses enkripsi dan dekripsi menjadi lambat.
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