Sökning: "trade up trade down"
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50 uppsatser innehållade orden trade up trade down.
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Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)
Författare :Siva Sai Reddy Mallangi; [2017]
Nyckelord :Multi functional health monitoring wearable devices are quite prominent these days. Usually these devices are battery-operated and consequently are limited by their battery life from few hours to a few weeks depending on the application . Of late; it was realized that these devices; which are currently being operated at fixed voltage and frequency; are capable of operating at multiple voltages and frequencies. By switching these voltages and frequencies to lower values based upon power requirements; these devices can achieve tremendous benefits in the form of energy savings. Dynamic Voltage and Frequency Scaling DVFS techniques have proven to be handy in this situation for an efficient trade-off between energy and timely behavior. Within imec; wearable devices make use of the indigenously developed MUSEIC v2 Multi Sensor Integrated circuit - version 2.0 . This system is optimized for efficient and accurate collection; processing; and transfer of data from multiple health sensors. MUSEIC v2 has limited means in controlling the voltage and frequency dynamically. In this thesis we explore how traditional DVFS techniques can be applied to the MUSEIC v2. Experiments were conducted to find out the optimum power modes to efficiently operate and also to scale up-down the supply voltage and frequency. Considering the overhead caused when switching voltage and frequency; transition analysis was also done. Real-time and non real-time benchmarks were implemented based on these techniques and their performance results were obtained and analyzed. In this process; several state of the art scheduling algorithms and scaling techniques were reviewed in identifying a suitable technique. Using our proposed scaling technique implementation; we have achieved 86.95% power reduction in average; in contrast to the conventional way of the MUSEIC v2 chip’s processor operating at a fixed voltage and frequency. Techniques that include light sleep and deep sleep mode were also studied and implemented; which tested the system’s capability in accommodating Dynamic Power Management DPM techniques that can achieve greater benefits. A novel approach for implementing the deep sleep mechanism was also proposed and found that it can obtain up to 71.54% power savings; when compared to a traditional way of executing deep sleep mode. Keywords - low-power; DVFS; DPM; energy; wearable devices; voltage and frequency scal- ing; låg effekt; DVFS; DPM; energi; bärbara enheter; spänning och frekvensskalning;
Sammanfattning :
Multi functional health monitoring wearable devices are quite prominent these days. Usually these devices are battery-operated and consequently are limited by their battery life (from few hours to a few weeks depending on the application). LÄS MER
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D-uppsats, Handelshögskolan i Stockholm/Institutionen för finansiell ekonomi
Författare :Vilem Fasura; [2017]
Nyckelord :Private equity; Culture; Trade unions; Sweden; Case study;
Sammanfattning :
The thesis chronicles Dometic's different ownerships from 2001 up to a stock exchange listing in 2015, and analyzes the specific context that played a significant role in the contrasting approaches of private equity firms EQT and BC Partners. Through a case study I investigate the impacts of Swedish national values and characteristics as well as the private equity firms' values and principles on performance, leverage, and conduct of business. LÄS MER
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Master-uppsats, Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling
Författare :Avinash Goud Chekkilla; [2017]
Nyckelord :Cassandra-stress; NoSQL; Docker; VM; Virtualization; CQL; Bare-Metal; Linux;
Sammanfattning :
Context Light weight process virtualization has been used in the past e.g., Solaris zones, jails in Free BSD and Linux’s containers (LXC). LÄS MER
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Master-uppsats, Linköpings universitet/Databas och informationsteknik
Författare :Zhiming Gao; [2017]
Nyckelord :Ontology alignment; Clustering; automated procedure; Large scale ontology; Evaluation;
Sammanfattning :
With the emerging amount of information available in the internet, how to make full use of this information becomes an urgent issue. One of the solutions is using ontology alignment to aggregate different sources of information in order to get comprehensive and complete information. LÄS MER
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Master-uppsats, KTH/Energiteknik
Författare :Floriane Paty; [2016]
Nyckelord :;
Sammanfattning :
De senaste 25 åren har präglats av en betydande ökning av efterfrågan på el. Tyvärr har den ökade el-produktionen skett utan hänsyn till miljön och genom ökning av CO2-utsläppen. Under de senaste decennierna har nya metoder för produktion av el från förnybara källor uppstått. LÄS MER
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