X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=back%2Fsummary.tex;h=182ba8a2180e54b91c3ac4b827f0d3edd9856c77;hb=48685f7c608c566a9b6935e02e39196dea783b4c;hp=08e0fd6d0023b0ee70ab02e6120478be19a97a20;hpb=4c449b205b49b4773934bd5cfd22e0f15e199eeb;p=phd-thesis.git diff --git a/back/summary.tex b/back/summary.tex index 08e0fd6..182ba8a 100644 --- a/back/summary.tex +++ b/back/summary.tex @@ -3,15 +3,43 @@ \input{subfilepreamble} \begin{document} -\input{subfileprefix} -\chapter{Summary}% -\label{chp:summary} -\begin{center} +\input{subfileprefixsmall} +\ifSubfilesClassLoaded{\chapter*{Summary}}{\chapter{Summary}}% +\label{chp:summary}% +\glsresetall% +%\begin{center} +%\noindent% +The number of computers around us is growing exponentially, thus increasing the complexity of the systems in which they operate. +Many of these computers are \emph{edge devices} operating in \gls{IOT} systems. +Within these orchestras of computers, they interact with their environment using sensors and actuators. +Edge devices often use cheap microcontrollers designed for embedded applications. +They, therefore, have little memory, unhurried processors, and slow communication but are tiny and energy efficient. +Programming \gls{IOT} systems is complex due to their dynamic, interactive, distributed, collaborative, multi-tiered, and multitasking nature. +This is impeded even more by semantic friction that arises through different hardware and software characteristics between the tiers. -\noindent% -This is a summary of 350--400 words. +A solution is found in \gls{TOP}. +%A solution is found in the declarative programming paradigm \gls{TOP}.%, a declarative programming paradigm. +In \gls{TOP}, the main building blocks are tasks, an abstract representation of work. +During execution, the current value of the task is observable, and other tasks can act upon it. +Collaboration patterns can be modelled by combinding and transforming tasks into compound tasks. +From this declarative description of the work, a ready-for-work computer system is generated that guides the user in doing the work. +An example of a \gls{TOP} system is \gls{ITASK}, a language for describing interactive web applications. +Programming edge devices would benefit from \gls{TOP} as well. +However, it is not straightforward to run \gls{TOP} systems on resource-constrained edge devices. -\end{center} - -\input{subfilepostamble} +This dissertation shows how to orchestrate complete \gls{IOT} systems using \gls{TOP}. +% +First, I present advanced \gls{DSL} embedding techniques. +Then \gls{MTASK} is shown, a \gls{TOP} \gls{DSL} for \gls{IOT} edge devices, embedded in \gls{ITASK}. +Tasks are constructed and compiled at run time. +This allows tasks to be tailor-made for the work that needs to be done. +The compiled task is sent to the device for interpretation. +For a device to be used in an \gls{MTASK} system, it needs to be programmed once with a lightweight domain-specific \gls{OS}. +This \gls{OS} executes tasks in an energy-efficient way and automates all communication and data sharing. +All aspects of the \gls{MTASK} system are shown: example applications, language design, implementation details, integration with \gls{ITASK}, and green computing facilities. +When using \gls{MTASK} in conjunction with \gls{ITASK}, entire \gls{IOT} systems are programmed tierlessly from a single source, language, paradigm, high abstraction level, and type system. +The dissertation concludes with a comparison between tierless programming, in particular in \gls{MTASK}, and traditional tiered programming. +It shows that many problems such as semantic friction, maintainability, robustness, and interoperation safety are mitigated when using tierless programming. +%This is a summary of 350--400 words. +%\end{center} \end{document}