A comparative life cycle analysis of electromicrobial production systems

Electromicrobial production (EMP) processes represent an attractive strategy for the capture and conversion of CO2 into carbon-based products. We describe the development and application of comprehensive reactor, process, and life cycle impact models to analyze three major EMP systems relying on formate, H2, and acetate as intermediate molecules. Our results demonstrate that EMP systems can achieve a smaller carbon footprint than traditional bioprocessing strategies provided the electric grid is composed of >~90% renewable energy sources. For each of the three products we consider (biomass, enzymes, and lactic acid), the H2-mediated Knallgas bacteria system achieves the lowest overall global warming potential, indicating that this EMP strategy may be best-suited for industrial efforts based on current technology. We also identify environmental hotspots and process limitations that are key sites for future engineering and research efforts for each EMP system. Our analysis demonstrates the utility of an integrated bioelectrochemical model/life cycle assessment framework in both analyzing and aiding the ecodesign of electromicrobial processes and should help guide the design of working, scalable, and sustainable systems.

ARES: Automated Risk Estimation in Smart Sensor Environments

Industry 4.0 adoption demands integrability, interoperability, composability, and security. Currently, integrability, interoperability and composability are addressed by next-generation approaches for enterprise systems integration such as model-based standards, ontology, business process model life cycle management and the context of business processes. Security is addressed by conducting risk management as a first step. Nevertheless, security risks are very much influenced by the assets that the business processes are supported. To this end, this paper proposes an approach for automated risk estimation in smart sensor environments, called ARES, which integrates with the business process model life cycle management. To do so, ARES utilizes standards for platform, vulnerability, weakness, and attack pattern enumeration in conjunction with a well-known vulnerability scoring system. The applicability of ARES is demonstrated with an application example that concerns a typical case of a microSCADA controller and a prototype tool called Business Process Cataloging and Classification System. Moreover, a computer-aided procedure for mapping attack patterns-to-platforms is proposed, and evaluation results are discussed revealing few limitations.

PENILAIAN KELAYAKAN EKONOMI INVESTASI PERALATAN TAMBANG MENGGUNAKAN METODE INCREMENTAL COST (STUDI KASUS: EXCAVATOR DOOSAN DX 340 LC-5)

Penambangan merupakan kegiatan padat modal, salah satunya pertimbangan investasi dalam kepemilikan peralatan penambangan. Dalam menentukan kapan harus melakukan investasi peralatan juga harus dipertimbangkan. Alternatif pertimbangan penilaian kelayakan ekonomi dalam investasi terdapat beberapa metode, diantaranya adalah metode average cost dan incremental cost. Analisa kelayakan dimulai dengan membuat model life cycle cost excavator Doosan DX 340 LC-5 untuk mengetahui performa biaya yang ditimbulkan akibat penggunaan alat tersebut. Model life cycle cost dimulai dari data tahun 2012 sampai dengan tahun 2018. Biaya dan harga menggunakan dolar ($), dengan konversi dari rupiah ke dolar adalah Rp. 14.000,-. Harga rental alat excavator Doosan DX 340 LC-5 saat pengambilan data ini adalah $ 25,36/ jam. Harga solar industry yang digunakan adalah $ 0,75/Lt, dan gaji operator sebesar $ 1,75/jam. Dari hasil Analisa penggunaan excavator Doosan 340 DX LC5 saat ini tidak layak jika diteruskan hingga tahun proyek selesai. Untuk melanjutkan sisa proyek tersebut akan lebih baik jika mendatangkan excavator Doosan 340 unit baru dengan metode sewa walaupun harga sewa lebih mahal dari saat ini, tetapi dengan PA unit yang baik maka average unit cost akan lebih menguntungkan dibandingkan tetap menggunakan alat yang lama. Alternatif mendatangkan unit dengan cara membeli alat tidak direkomendasikan karena dilihat dari analisis incremental cost pada cash flow terlihat NPV dan ROR yang lebih kecil sehingga tidak layak secara ekonomi.

Green Information System for a Sustainable Enterprise

The changes made in the environment as a consequence of massive industrialization led to a change in the vision of mankind on how organizations should interact with the ecosystem. In the same time information system has a key role in their activity. The increasing their use is accompanied by positive effects. This chapter presents the changes necessary for transformation traditional information systems in green information system. The organization's motivations to develop and implement strategies and regulations for environmental protection are varied. They can be the organization's internal drivers, such as reducing delivery costs, increasing efficiency, improving market reputation, and external, such as government legislation or policies, regulations, competition. Changes necessary to implement green information system are presented based on agile model life cycle and in accord with organizations objectives.

Business Process Model Life-Cycle Management in Cloud Manufacturing

To facilitate the vision of service-oriented manufacturing, Cloud Manufacturing (CMfg) will need to support business process model life-cycle management. In this paper, we propose the Business Process Cataloging and Classification System (BPCCS) to support that role. BPCCS can facilitate adaptation of business process models. We validate life-cycle management requirements for such a system and propose capabilities the system must have to address these requirements. We analyze related work in academia and industry as a basis for synthesizing a meta-model and a conceptual architecture for the system. We conclude that contextual information for business process models is a critical part of such a system and where the CMfg community can contribute new and valuable results.

Green Information System for a Sustainable Enterprise

The changes made in the environment as a consequence of massive industrialization led to a change in the vision of mankind on how organizations should interact with the ecosystem. In the same time information system has a key role in their activity. The increasing their use is accompanied by positive effects. This chapter presents the changes necessary for transformation traditional information systems in green information system. The organization's motivations to develop and implement strategies and regulations for environmental protection are varied. They can be the organization's internal drivers, such as reducing delivery costs, increasing efficiency, improving market reputation, and external, such as government legislation or policies, regulations, competition. Changes necessary to implement green information system are presented based on agile model life cycle and in accord with organizations objectives.

Environmental and Economic Model Life Cycle of Buildings Based on the Concept of "Green Building”

Purpose - to ensure sustainable development of the territory and incentives to increase the "green" building by improving the competitiveness of the buildings that have higher environmental and economic performance at all stages of the life cycle. A systematic analysis of standards of "green" building and the existing methodologies for life cycle assessment back. Developed and studied environmental-economic model of the life cycle of the building effectively, by identifying and organizing the quantitative and qualitative characteristics and to calculate the total cost of the building. These issues are discussed in this article.