Sökning: "operational requirements"

Visar resultat 21 - 25 av 202 avhandlingar innehållade orden operational requirements.

  1. 21. Continuous-Time Delta-Sigma Modulators for Ultra-Low-Power Radios

    Författare :Dejan Radjen; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Delta-Sigma; continuous-time; analog-to-digital; ultra-low-power; clock jitter; single operational amplifier; SAR quantizer;

    Sammanfattning : The modern small devices of today require cheap low power radio frequency (RF) transceivers that can provide reliable connectivity at all times. In an RF transceiver, the analog-to-digital converter (ADC) is one of the most important parts and it is also one of the main power consumers. LÄS MER

  3. 22. Food traceability in regulated fresh food supply chains with an emphasis on the Swedish fishing industry

    Författare :Henrik Ringsberg; Förpackningslogistik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Food traceability; fresh food supply chains; ICT; conceptual modelling; governmental authorities; food supply chain transparency; food traceability requirements;

    Sammanfattning : Food traceability is gaining increased attention in food companies and governmental authorities. This is because of the increase in legal and consumer requirements on ensuring food safety, quality and preservation of living resources. These requirements especially apply to the management of food traceability in regulated fresh food supply chains. LÄS MER

  4. 23. SiC Readout IC for High Temperature Seismic Sensor System

    Författare :Ye Tian; Carl-Mikael Zetterling; Ana Rusu; Philip A. Mawby; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Silicon carbide SiC ; bipolar junction transistor BJT ; integrated circuit IC ; sigma-delta Σ∆ ; data conversion; operational amplifier OpAmp ; VBIC; SPICE Gummel-poon; high-temperature; electromechanical; accelerometer; capacitive sensor; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : Over the last decade, electronics operating at high temperatures have been increasingly demanded to support in situ sensing applications such as automotive, deep-well drilling and aerospace. However, few of these applications have requirements above 460 °C, as the surface temperature of Venus, which is a specific target for the seismic sensing application in this thesis. LÄS MER

  5. 24. Increasing the environmental and social sustainability in corporate purchasing: Practices and tools

    Författare :Charlotte Leire; Internationella miljöinstitutet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Green Purchasing; Information tools; Environmental Management; Environmental and social requirements;

    Sammanfattning : Despite efforts to stimulate the dissemination of green purchasing practices, their uptake in business and industry has so far proven limited. Reasons for the limited progress remain largely unclear. LÄS MER

  7. 25. On Formal Specification and Verification of Function Block Applications in Industrial Control Logic Development

    Författare :Oscar Ljungkrantz; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; safety logic; function block; IEC 61131; software requirements and specification; formal verification; reusable automation component RAC ; temporal logic; manufacturing automation software; programmable logic controller PLC ; model checking;

    Sammanfattning : Developing a control system for an automated manufacturing system is a challenging task. In addition to controlling and coordinating the machines and robots used in the production, the safety of the operators must be assured. LÄS MER