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   https://doi.org/10.1016/j.ifacol.2022.07.444  

   Lee, J.; Sun, Z.; Tan, T.B.; Mendez, J.; Flores-Cerrillo, J.; Wang, J.; He, Q.P. (June 2022, Proceedings of 13th Dynamics and Control of Process Systems (DYCOPS 2022))

   Rotating machines, such as pumps and compressors, are critical components in refineries and chemical plants used to transport fluids between processing units. Bearings are often the critical parts of rotating machinery, and their failure could result in economic loss and/or safety issues. Therefore, estimation of the remaining useful life (RUL) of a bearing plays an important role in reducing production losses and avoiding machine damage. Because bearing failure mechanisms tend to be complex and stochastic, data-driven RUL estimation approaches have found more applications. This work proposes a novel RUL estimation method based on systematic feature engineering and extreme learning machine (ELM). The PRONOSTIA dataset is used to demonstrate the effectiveness of the proposed method. 

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2. Boom, bust, action! How communities can cope with boom‐bust cycles in unconventional oil and gas development

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   Arnold, Gwen; Klasic, Meghan; Schomburg, Madline; York, Abigail; Baum, Melissa; Cherin, Maia; Cliff, Sydney; Kavousi, Parisa; Miller, Alexandria Tillett; Shajari, Diana; et al (June 2022, Review of Policy Research)

   Abstract Scholarship on boom‐busts cycles in resource extraction often assumes that affected resource‐rich communities are at best reactive, at worst helpless, in the face of the large, exogenous shocks this cycle visits upon them. Researchers infrequently examine what communities themselves can do to improve their economic prospects and residents' quality of life amidst booms and busts. In this review paper, we identify and synthesize work scattered across disparate academic and gray literature—in planning, law, community economic development, rural sociology, economics, and political science, among others—to holistically assess what we know about how communities can use local policymaking to manage impacts of booms and busts associated with unconventional oil and gas drilling (UOGD), often called “fracking.” We highlight examples of communities tackling this task using vertical and horizontal governance strategies and distill expert recommendations for how communities can build boom‐bust resiliency generally and in key areas impacted by UOGD. 

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3. Dynamic life cycle economic and environmental assessment of residential solar photovoltaic systems

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   Ren, Mingcheng; Mitchell, Clayton R.; Mo, Weiwei (June 2020, Science of the total environment)

   With the increasing implementation of solar photovoltaic (PV) systems, comprehensive methods and tools are required to dynamically assess their economic and environmental costs and benefits under varied spatial and temporal contexts. This study integrated system dynamics modeling with life cycle assessment and life cycle cost assessment to evaluate the cumulative energy demand, carbon footprint, water footprint, and life cycle cost of residential grid-connected (GC) and standalone (SA) solar PV systems. The system dynamics model was specifically used for simulating the hourly solar energy generation, use, and storage during the use phase of the solar PVs. The modeling framework was then applied to a residential prototype house in Boston, MA to investigate various PV panel and battery sizing scenarios. When the SA design is under consideration, the maximum life cycle economic saving can be achieved with 20 panels with no battery in the prototype house, which increases the life cycle economic savings by 511.6% as compared to a baseline system sized based upon the engineering rule-of-thumb (40 panels and 40 batteries), yet decreases the demand met by 55.7%. However, the optimized environmental performance was achieved with significantly larger panel (up to 300 units) and battery (up to 320 units) sizes. These optimized configurations increase the life cycle environmental savings of the baseline system byup to 64.6%, but significantly decrease the life cycle economic saving by up to 6868.4%. There is a clear environmental and economic tradeoff when sizing the SA systems. When the GC system design is under consideration, both the economic and environmental benefits are the highest when no battery is installed, and the benefits increase with the increase of panel size. However, when policy constraints such as limitations/caps of grid sell are in place, tradeoffs would present as whether or not to install batteries for excess energy storage. 

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4. Life quality and social integration of migrants settled in Chile: Venezuelan Narratives

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   Acero, Liliana; Zuelta_Pastor, Pablo (October 2024, International Journal of Development Research)

   Local economic crisis, violence and permanent political uncertainty, especially in some developing countries, has led to a massive migration of Venezuelans, lately to other countries of South America, looking for better living conditions or mere subsistence. The total number of Venezuelans living in Chile had reached until 2022, 532.715 individuals, representing 32,8% of the migrant population in the country. Since 2014, Venezuelans have arrived in waves with different social, economic and cultural characteristics. This paper presented a qualitative analysis of the effects of selected indicators on the quality of life and social integration of ten Venezuelan migrants in Chile by gender, age and class, as narrated by themselves. Its aim was to explore their socioeconomic and cultural trajectories during settlement in Chile and show how they affected their resilience strategies and social integration. Findings showed a precarious stability in life quality, devaluation of their work and professional status, daily suffering of a variety of maltreatment forms and injustices, most especially, though not only at work. The resilient strategies they have followed involve regrouping among compatriots, certain emotional isolation from nationals, absence of or mild confrontation of ill-treatment, as well as denial of migrant discrimination as a marked social trend. 

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5. Simulating Urban Patterns of Life: A Geo-Social Data Generation Framework

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   Kim, Joon-Seok; Kavak, Hamdi; Manzoor, Umar; Crooks, Andrew; Pfoser, Dieter; Wenk, Carola; Züfle, Andreas (November 2019, Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems)

   Data generators have been heavily used in creating massive trajectory datasets to address common challenges of real-world datasets, including privacy, cost of data collection, and data quality. However, such generators often overlook social and physiological characteristics of individuals and as such their results are often limited to simple movement patterns. To address these shortcomings, we propose an agent-based simulation framework that facilitates the development of behavioral models in which agents correspond to individuals that act based on personal preferences, goals, and needs within a realistic geographical environment. Researchers can use a drag-and-drop interface to design and control their own world including the geospatial and social (i.e. geo-social) properties. The framework is capable of generating and streaming very large data that captures the basic patterns of life in urban areas. Streaming data from the simulation can be accessed in real time through a dedicated API. 

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