Sökning: "jun liu"

Visar resultat 1 - 5 av 11 uppsatser innehållade orden jun liu.

1. 1. Classification of microbiome data with structural zeroes and small samples

   Master-uppsats, Linköpings universitet/Institutionen för datavetenskap

   Författare :Jun Li; [2021]
   Nyckelord :;

   Sammanfattning : OTU data possesses its uniqueness of small sample size and high proportion of zeros,because of which the classification is of huge challenge. The thesis covers case ofstructural zeros in OTU counts and tries to establish new methodology based on Kaul’sassumption and the original model. LÄS MER

3. 2. A Combination method of Fingerprint Positioning and Propagation Model Based localization scheme in 3D Large-Scale Indoor Space

   Master-uppsats, Mittuniversitetet/Avdelningen för informationssystem och -teknologi

   Författare :Jun Liu; [2018]
   Nyckelord :;

   Sammanfattning : To achieve the concrete aim of improving the positioning accuracy for large-scale indoor space in this thesis, we propose a weighted Gaussian and Mean hybrid filter (G-M filter) to obtain the G-M mean of received signal strength indicator (RSSI) measurements, which is implemented by taking the practically experimental measurements of received signal strength indicator and analyzing the characteristics of received signal strength indicator. Meanwhile, various path loss models have been utilized to estimate the separation between the transmitting antenna and the receiver (T-R separation) by calculating the G-M mean of received signal strength indicator, therefore, a dynamic-parameter path loss model has been proposed which can be appropriate to enhance the accuracy of estimated T-R separation and accurately describe the indoor position. LÄS MER

4. 3. Learning to Manage the Unmanageable. A Case Study on Exchange Rate Risk Management within Globally Sourcing Multinational Corporations.

   Master-uppsats, Göteborgs universitet/Graduate School

   Författare :Charlotte Granfors Wellemets; Jun Liu; [2017-07-27]
   Nyckelord :Exchange Rate Risk Management; Multinational Corporations; Global Sourcing; Risk Management; Capability Transfers;

   Sammanfattning : Background and problem: Existing research has shown that the various risks related to multinational corporations’ (MNCs) supply chains are inherent cost drivers, creating managerial challenges and coherently affecting the bottom line of the companies ( Clark & Marois, 1996; Stanczyk et al., 2017 ). LÄS MER

5. 4. COD fractionation of wastewater on cruise liners before and after advanced treatment

   Kandidat-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

   Författare :Karin Ekström; Jenni Borg; [2015]
   Nyckelord :Chemical oxygen demand; COD; biodegradability; wastewater; permeate; water treatment; cruise liners; analytical chemistry; ozonation; nanofiltration; physiochemical method;

   Sammanfattning : The purpose of this Bachelor thesis was to establish a method for determining the chemical oxygen demand (COD) fractionation in wastewater from cruise liners. COD fractions of interest were soluble biodegradable (SS), particulate biodegradable (XS), soluble unbiodegradable (SI) and particulate unbiodegradable (XI). LÄS MER

7. 5. Water Situation In China - Crisis Or Business As Usual?

   Master-uppsats, Industriell miljöteknik

   Författare :Elaine Leong; [2013]
   Nyckelord :water; water crisis; water pollution; China; Yangtze River; Yellow River; Huai River; Hai River; Tarim River; Pearl River; Falkenmark Water Scarcity Index; Global threats to human water security and river biodiversity; Physical and economic water scarcity index; Water stress indicator taking environmental water requirements into account; Heihe River; China s future water demand; China s water future;

   Sammanfattning : Several studies indicates China is experiencing a water crisis, were several regions are suffering of severe water scarcity and rivers are heavily polluted. On the other hand, water is used inefficiently and wastefully: water use efficiency in the agriculture sector is only 40% and within industry, only 40% of the industrial wastewater is recycled. LÄS MER