Judul: Kajian Efektivitas Penerapan Sistem Manajemen Lingkungan ISO 14001 di PT Pupuk Sriwidjaja Palembang
Abstrak: PT Pupuk Sriwidjaja Palembang (PT Pusri Palembang) is a petrochemical industry that produces urea fertilizer as the main products with four plants with a capacity of 2.09 million tons/year. PT Pusri Palembang is determined to improvised the conservation of the environment by adopting an Environmental Management System (EMS) ISO 14001. This study aims to determine the effectiveness of implementation of ISO 14001 EMS of PT Pusri Palembang. This study was conducted through document review, field observation and questionnaire. Significant Environmental Aspects (SEA) which have been set including urea solution shelter, waste tank (MPAL) and the use of water have been fully effective in terms of compliance with the ISO 14001 EMS standard, the availability of procedures and records, compliance of facility and technology used and the achievement of environment performance accordance with the goals and objectives. Aspect of use energy (natural gas and electricity) are not fully effective because the program can not be made to meet goals and objectives yet.
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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: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular