Judul: An analysis of environmental quality of medium and small cities in Kalimantan.
Abstrak: Based on the 2010 census, Kalimantan region inhibited by 13 787 831 people where 5 799 291 people or 42.06 % among them live in urban areas. The population growth occurred because of the rising birth rate, urbanization from rural areas, as well as immigrant that coming from other areas. On one side, this condition contributes positively to abundant availability of human resources. On the other hand, this condition causes problems or negative impacts on the environment such as pollution and more intense use of urban land. Through good urban environment management, these negative impacts can be reduced. This study conducted in order to achieve a sustainable city through good environmental management. This study conducted in order to achieve a sustainable city through good environmental management. Based on population classifications, Kalimantan region consist of 52 cities. These cities divided into 5 big cities, 4 medium cities and 43 small cities. Until now, there was a tendency of urban environmental management research more focused on big cities and very limited similar researches have done in medium and small cities. As the result, information about environment management in medium and small cities is generally difficult to obtain. Therefore, in these researches medium and small cities were chosen to be the object of the research. The objectives of this research are : (1) analyzing and grouping medium and small cities in Kalimantan based on common characteristics of the environment, (2) analyzing factors that affect the medium and small cities environmental quality index in Kalimantan, (3) analyzing relationship between environmental budget allocations, solid waste management budget allocation and city environmental quality index, (4) analyzing relationship between population density and city environmental quality index and (5) developing direction in improving environmental quality for medium and small cities. The research was conducted over 14 months in the period of June 2012 to July 2013. Research area covers 47 cities in Kalimantan, which consist of 4 medium cities and 43 small cities. Analysis of the data used in this study including: (1) Cluster analysis, (2) Principal component analysis and (3) Panel data analysis. Cluster analysis was used to group cities based on common characteristics related to environmental management. The analysis obtained 6 or 12.77 % of the cities belongs to best category, 7 or 14.89 % of the cities belongs to good category, 19 or 40.43 % of the cities belongs to sufficient category, 11 or 23.40 % of the cities belongs to bad category while the rest 4 or 8.51 % are belongs to the worst category. Principal component analysis showed that management of public area such as city park and traditional market has greatest impact on city environment quality index. While management of private area such as citizen settlements has less positive impact on city environment quality index. Panel analysis was used to get correlation between environmental management budget allocation, solid waste management budget allocation, urban area population density and environmental quality index of the cities. As the result environmental management budget allocation and solid waste management budget allocation have positive correlation with city environmental quality index.
Keyword: budget allocations, green open space, population density, solid waste, urban environment quality

Judul: Analisis Status Kualitas Udara Lima Kota Metropolitan di Indonesia.
Abstrak: The air pollution has become environmental quality indicator that impact to citizen health and affect the air quality in that area. The metropolitan city with rapid population rate and higher living standard as well as prosperity level than in rural area caused the increasing of energy consumption and pollutant emission. The aim of this study was to analyse the air quality status and the correlation between air quality and the condition of metropolitan cities in Indonesia namely Jakarta, Bandung, Medan, Surabaya, and Semarang. Secondly, to determine the factor affecting the air quality in those cities. The data were obtained from the State Ministry of Environment, BPS-Statistics, and the other related institutions which were then processed by SPSS program. Based on the analyzed data, the pollutant concentrations were fluctuated from 2007-2012 in those five cities. The positive correlation was occurred between the amount of vehicles and the concentration of PM10, SO2, and NO2, between the population and the concentration of SO2 and NO2, also between energy consumption and SO2. The negative correlation was occurred between the green open area with CO and NO2. Therefore, the factors that affect the air quality in metropolitan cities in Indonesia are population, vehicles, and green open area. Moreover, industrial estate and meteorological factor are allegedly to affect air quality in those cities.
Keyword: air quality, metropolitan city, correlation, Indonesia

Judul: Desain Sistem Transfer Energi Nirkabel Berbasiskan Tesla Coil
Abstrak: Tesla coil merupakan alat yang ditemukan oleh Nikola Tesla yang dapat mentransmisikan daya tanpa kabel dengan memanfaatkan prinsip induksi elektromagnetik. Pada penelitian ini dibuat sebuah prototype Tesla Coil dengan menggunakan transistor C1970 dan receiver menggunakan rangkaian LC. Identifikasi alat meliputi pengaruh daya input transmitter terhadap receiver, bentuk signal yang dipancarkan transmitter, pengaruh jarak transmitter dan receiver, nilai efisiensi serta efek alat terhadap perangkat lain. Hasil pengamatan menunjukkan bahwa semakin besar daya input maka semakin besar daya yang dipancarkan oleh transmitter. Bentuk sinyal yang dipancarkan oleh transmitter berupa gelombang listrik AC sinusoidal dengan frekuensi ~2.9 MHz. Semakin jauh jarak receiver terhadap transmitter maka semakin kecil amplitudo gelombang AC yang diterima oleh receiver, menyebabkan semakin kecil daya yang diterima oleh receiver. Adapun nilai efisiensi terbesar penangkapan daya oleh receiver yaitu sebesar 0.00516 % serta terdapat gangguan pada alat-alat tertentu seperti monitor komputer dan radio.
Keyword: rangkaian LC, receiver, tesla coil, transistor C1970, transmitter