Essays about: "Peng Peng"

Showing result 1 - 5 of 91 essays containing the words Peng Peng.

  1. 1. An Evaluation Study of Leak Testing Technologies for Watertight Plate Heat Exchangers : Fast and sustainable leak testing technology for high energy efficiency products

    University essay from Blekinge Tekniska Högskola/Institutionen för matematik och naturvetenskap

    Author : Fritjof Nilsson; Yanjun Peng; [2023]
    Keywords : Leak rate; Optimization; Pressure Decay; Vacuum Technology; Volume; Läckhastighet; Optimering; Tryckfall; Vakuum Teknologi; Volym;

    Abstract : Background: One part of manufacturing a Plate Heat Exchanger (PHE) is to leak test them before delivery. Today, helium is used extensively in leak testing. How-ever, it is unsustainable to use helium in leak testing, because of its non-renewability and therefore becoming more and more expensive. Also, this technology is relatively complex. READ MORE

  3. 2. How owners and managers of start-ups deal with the potential trade-offs between sustainability, growth, and profitability in the early stages

    University essay from Uppsala universitet/Företagsekonomiska institutionen

    Author : Lei Peng; Thiago Lucena; [2023]
    Keywords : sustainability; profitability; growth; start-ups; trade-offs;

    Abstract : Sustainability has become a major concern for society, adding pressure on companies to become more sustainability-driven, while at the same time attending to the questions of economic growth and financial performance. Although the existing literature has provided frameworks that highlight the need for balancing environmental, social, and economic impact, there is still limited knowledge about how company representatives perceive and deal with the implicit trade-offs. READ MORE

  4. 3. Modeling of Energy Consumptionin Milling Process to Assess their Environmental Impact

    University essay from KTH/Produktionsutveckling

    Author : Vasanth Kumaran Ashok Kumar; Peng Liang; [2023]
    Keywords : Milling process; Energy consumption; Mechanistic model; Environmental impact; Life cycle assessment; Fräsningsprocess; Energiförbrukning; Mekanisk modell; Miljöpåverkan; Livscykelbedömning;

    Abstract : This thesis presents a method for modeling energy consumption in the milling process to assess their environmental impact, using a simple experimental approach. The factors influencing the environmental impact in milling processes are analyzed with life cycle assessment principles, and their climate change impact is calculated with examples of dry milling experiments. READ MORE

  5. 4. Calculating Value-at-Risk under the G-Normal distribution. : Applied with Swedish data.

    University essay from Uppsala universitet/Nationalekonomiska institutionen

    Author : Daniel Renvall Moberg; [2023]
    Keywords : ;

    Abstract : Value–at–Risk (VaR) since its birth at JPMorgan in the 1990s, has become widely adopted by first and foremost the financial industry, but in later days regulatory authorities as a way of calculating downside risk. The subject in hand has led to numerous attempts by both the industry as well as scholars to find the perfect settings to calculate VaR. READ MORE

  6. 5. Statistical Analysis on Aerodynamics of Passenger Vehicles

    University essay from Uppsala universitet/Sannolikhetsteori och kombinatorik

    Author : Dingkang Peng; [2023]
    Keywords : statistics; aerodynamics; automotive engineering; causality; time series; cluster analysis;

    Abstract : This thesis aims to use statistical methods to analyze wind tunnel data generated in automotive aerodynamics testing to understand the properties of aerodynamic force and pressure in a vehicle's working environment. The data used for analysis are visualized, clustered and finally analyzed for Granger causality to see whether a causal link exists between different variables. READ MORE