Judul: Kajian Efektivitas Penerapan Sistem Manajemen Lingkungan ISO 14001 di PT Unilever Indonesia Tbk. Pabrik Home Personal Care Liquid
Abstrak: ISO 14001 is an international standard used for maintain the Environmental Management System (EMS). The goal of this research is to determine the effectiveness of implementation SML ISO 14001 at PT Unilever Indonesia Tbk. The research method takes two steps, data collection and studies on the effectiveness of EMS ISO 14001. From the results of the study revealed that The specific environmental aspect of PT Unilever Indonesia are air pollution, solid waste, waste water, and hazardous waste. The specific environmental aspect of PT Unilever Indonesia Tbk has been appropriated to the quality standard and the regulatory laws. PT Unilever Indonesia Tbk has been committed to preventing pollution, obeying the rules, and continuous improvement as three fundamental supporting of environmental policy. PT Unilever Indonesia Tbk. also has been commited to establishing, implementing, and maintaining the procedure of identification environmental aspect
Keyword: environmental management system, ISO 14001, environmental policy, evvironmental aspects identification procedure, specific environmental aspect.

Judul: Kajian Efektivitas Penerapan Sistem Manajemen Lingkungan ISO 14001 di PT. Indocement Tunggal Prakarsa, Tbk. Citeureup, Bogor
Abstrak: PT. Indocement Tunggal Prakarsa. (ITP) Tbk. Cietureup, Bogor has implemented ISO 14001 since September 2002 and still retain such accreditation. The objective of this study was to determine the effectiveness of the implementation of the environmental management system ISO 14001 in PT. ITP Citeureup especially study the effectiveness of the management of significant environmental aspects which include: dust emissions, exhaust emissions, noise, hazardous and poisonous waste spill, and hazardous and poisonous waste utilization. In this research, the methods used are secondary data collection procedures in the form of company activities and data measurement results of monitoring of emissions of dust, exhaust emissions and noise levels. The Data compared with the standard ISO 14001-2005-19 and of legislation, so that it can be determined the effectiveness of the application of ISO 14001 in SML PT. ITP Citeureup. Based on the research results, in General, the implementation of ISO 14001 environmental management system in PT. ITP Citeureup weren't entirely effective, as there are several articles that have yet to comply with standards and regulations.
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Judul: Closed Knight’s Tour pada Papan Catur Berbentuk Persegi Panjang dengan Ukuran Maksimal 8 × 8
Abstrak: Closed Knight’s Tour merupakan langkah kuda yang mengunjungi setiap kotak pada papan catur tepat satu kali dengan langkah kuda berawal dan berakhir pada kotak yang sama. Graf yang terbentuk dari closed knight’s tour dinotasikan sebagai graf G(m,n), dengan m adalah banyaknya baris dan n adalah banyaknya kolom. Graf tersebut memuat Hamiltonian cycle. Sebuah graf terhubung G adalah graf bipartite jika dan hanya jika graf tersebut tidak memiliki cycle dengan panjang ganjil. Papan catur yang memenuhi syarat cukup untuk memiliki closed knight’s tour adalah papan catur berukuran 5 × 6, 5 × 8, 6 × 6, 6 × 7, 6 × 8, 7 × 8, dan 8 × 8.
Keyword: bipartite, closed knight’s tour, hamiltonian cycle, knight’s tour, teori graf