Judul: Strategy of the Implementation Environmentally Sound Management Scheme of Electronic Waste
Abstrak: Ketersediaan perangkat elektronik dengan kecepatan inovasi teknologi yang menawarkan fungsionalitas lebih baik, ukuran yang lebih compact dan desain yang lebih baru di pasaran menyebabkan perangkat elektronik dengan model lama tidak lagi memuaskan dan mendorong pengguna untuk menggantinya dengan perangkat elektronik yang baru dalam kurun waktu yang lebih cepat. Hal ini mengakibatkan masa habis pakai perangkat elektronik menjadi semakin pendek dan menyebabkan perangkat elektronik menjadi lebih cepat menjadi limbah elektronik. Limbah elektronik berbeda dengan sampah rumah tangga yang biasanya bersifat dapat diuraikan. Limbah elektronik memiliki karakteristik mengandung bahan berbahaya dan beracun (B3) selain material berharga yang terkadang masih mempunyai nilai ekonomi di dalamnya. Sebagai negara berkembang dengan tingkat konsumsi dan penjualan barang elektronik yang tinggi. Indonesia juga menghadapi permasalahan limbah elektronik. Tingkat pertumbuhan ekonomi yang terus membaik menjadikan daya beli masyarakat terhadap perangkat elektronik terus meningkat. Belum adanya kerangka hukum yang mengatur masalah penanganan limbah elektronik, keseragaman definisi dan kriteria serta tata cara pengolahan limbah elektronik yang ramah lingkungan, menyebabkan pemerintah belum dapat mengatur kegiatan pengelolaan limbah elektronik ataupun melakukan pengawasan pergerakan limbah elektronik. terutama yang dilakukan oleh sektor informal yang tersebar di berbagai daerah. Kegiatan pada sektor informal ini umumnya dikerjakan oleh pekerja-pekerja tidak terampil dengan cara yang tidak aman. Pengelolaan yang tidak ramah terhadap lingkungan ini, lambat laun akan menimbulkan dampak yang semakin signifikan terhadap kesehatan dan lingkungan., The availability of electronic devices with the speed of technological innovation that offers better functionality, size is more compact and newer designs on the market in constant time cause electronic devices with older models no longer satisfactory and encourage users to replace it with a new electronic device in the faster period. The life span of electronic devices is becoming increasingly shorter and has led the electronic devices become electronic waste faster. Electronic waste is different from household waste that usually can be described. Electronic waste has the characteristic of containing hazardous materials and toxic In addition to the valuable material that sometimes still have economic value in it. As a developing country with the level of consumption and higher sales of electronic goods, Indonesia is also facing the problem of electronic waste. The absence of a legal framework specifically governing the handling of electronic waste, setting up definitions, criteria and procedures for the processing of environmentally sound electronic waste management, has led the government not been able to regulate the management of electronic waste or to supervise the movement of electronic waste, mainly carried out by the informal sector that spread in various regions. The activities in the informal sector are generally done by unskilled workers using improperly methods that will gradually lead to an increasingly significant impact on health and the environment.
Keyword: strategy, management of electronic waste, environmentally friendly

Judul: Formulasi kebijakan sistem pengolahan sampah perkotaan berkelanjutan
Abstrak: Solid waste is still considered as worthless goods, so that it is still causing many problems. The purpose of this study is to formulate a sustainable urban waste management policy. The study was conducted in DKI Jakarta. The research is devided into four stages of analyses which include the availability and needed of land for a solid waste treatment, waste treatment technology optimization analysis of environmentally friendly, multi-criteria evaluation and policy analysis. Indonesia has many waste management policy, but not synergize together and not yet operational. Solid Waste management in DKI Jakarta has led to efforts to minimize waste, and waste reduction programs integrated between recycling, composting, combustion (incineration) and waste disposal system with a system of sanitary landfills, and will be pursued to zero waste program. DKI Jakarta needs to improve management efficiency and improved quality of service to the community, one with separation of regulator and operator functions, but managed by one institution to improve its performance and to cover the financing gap, ideally to cooperate with the private sector. The result of regression analysis shows a significant effect of economic growth in waste generation and characteristics. Increased in prosperity will increase the amount of inorganic waste, and lower amount of organic waste. Increased inorganic waste will increase the calorie content which is more beneficial if done with incinerator waste to energy (WTE), while providing the understanding that the waste is a resource that can be utilized as an energy alternative to electricity. Production of electricity from WTE incinerator is influenced by the calorie content, and type of waste. WTE incinerators have the advantage in processing speed and the required land area, but WTE incinerator required high initial investment. The result of CBA analysis shows that WTE incinerator is more expensive, but it is the most cost effective in the long term (25 years). The variables have a very strong influence on the cost of processing waste is waste transportation costs. In the context of environmental, sanitary landfill waste treatment system, which is placed far away from services area, can lead to a much larger greenhouse gases and generate leachate. The existence of designated land use and changes that are uncontrolled by DKI Jakarta complicate the placement of garbage processing unit. WTE technology or HRC which indoor system is more acceptable to local communities, compared to the open SLF. Incinerator technology is more efficient for processing large scale with a capacity of more than 500 tons / day, with the optimal point on the capacity of 3000 tons / day, which is supported by segregation. Organic waste treatment system is most optimal at high-rate composting system (HRC). WTE processing unit and HRC, should be placed in administrative of DKI. The sensitivity analysis shows that if the government would buy in a good price the electricity production and energy from solid waste, will raise the level of feasibility WTE incinerator system. Implementation of WTE incinerator technology, need to involve the private sector.
Keyword: High-Rate Composting (HRC), Sanitary Landfill

Judul: Karakteristik Tripel Pithagoras Dari Sudut Pandang Hiperbolik
Abstrak: Misalkan (a, b, c) merupakan tripel pithagoras (TP), jika dipilih x = cia dan y = bla maka diperoleh titik (x, y) pada cabang kanan hiperbola satuan x2+y2 = 1. Dengan demikian sembarang TP dipandang berperan dalam menentukan titik-titik rasional dari Hiperbola satuan yang disebut sudut pandang hiperbolik.
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