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[phd-thesis.git] / back / summary.tex

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 \documentclass[../thesis.tex]{subfiles}
 
-\begin{document}
-\ifSubfilesClassLoaded{
-       \pagenumbering{arabic}
-}{}
-
-\chapter{Summary}%
-\label{chp:summary}
-\begin{center}
+\input{subfilepreamble}
 
-\noindent%
-This is a summary of 350--400 words.
+\begin{document}
+\input{subfileprefixsmall}
+\ifSubfilesClassLoaded{\chapter*{Summary}}{\chapter{Summary}}%
+\label{chp:summary}%
+\glsresetall%
+The number of computers around us is growing exponentially, compounding the complexity of the systems in which they operate.
+Many of these computers are \emph{edge devices} operating in \gls{IOT} systems.
+Within these orchestrations of computers, they interact with the environment using sensors and actuators.
+Edge devices often use low-cost microcontrollers designed for embedded applications.
+They have little memory, unhurried processors, and are slow in communication but are also small and energy efficient.
+Programming \gls{IOT} systems is complex since they are dynamic, interactive, distributed, collaborative, multi-tiered, and multitasking in nature.
+The complexity is increased further by semantic friction that arises through different hardware and software characteristics between tiers.
 
-\end{center}
+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 combining and transforming tasks into compound tasks.
+From this declarative description of the work, a ready-for-work computer system is generated that guides all operators in doing the work.
+An example of a \gls{TOP} system is \gls{ITASK}, a language which describes interactive web applications.
+Programming edge devices benefits from \gls{TOP} as well.
+However, it is not straightforward to run \gls{TOP} systems on resource-constrained edge devices.
 
-\input{subfilepostamble}
+This dissertation demonstrates 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 current work requirements.
+The compiled task is sent to the device for interpretation.
+For a device to be used in an \gls{MTASK} system, it is programmed once with a lightweight domain-specific \gls{OS}.
+This \gls{OS} executes tasks in an energy-efficient way and automates all communications 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.
+Many problems such as semantic friction; maintainability and robustness issues; and interoperation safety are mitigated when using tierless programming.
+%This is a summary of 350--400 words.
 \end{document}