\chapter*{abbreviations \markboth{abbreviations}{abbreviations}}
\label{chap}
\addcontentsline{toc}{chapter}{List of Abbreviations}

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\begin{abbreviations}
\item[WSN] Wireless Sensor Network
\item[DILCO] Distributed Lifetime Coverage Optimization
\item[MuDiLCO] Multiround Distributed Lifetime Coverage Optimization
\item[PeCO] Perimeter-based Coverage Optimization
\item[OMNeT++] Objective Modular Network Testbed
\item[DESK] Distributed Energy-efficient Scheduling for K-coverage
\item[GAF] Geographical Adaptive Fidelity
\item[PDA] Personal Digital Assistant
\item[WLAN] Wireless Local-Area Network
\item[MEMS] Micro-Electro-Mechanical Systems
\item[ADC] Analog to Digital Converters
\item[VCO] Voltage-Controlled Oscillator 
\item[PLL] Phase-Locked Loop
\item[GPS] Global Positioning System
\item[OS] Operating System
\item[CMOS]  Complementary Metal-Oxide-Silicon
\item[MAV] Micro Aerial Vehicle
\item[ECG] Electrocardiogram
\item[SCADA] Supervisory Control and Data Acquisition 
\item[QoS]  Quality of Service
\item[DSC] Disjoint  Set Covers
\item[MIP] Mixed Integer Programming
\item[LP] Linear Programming
\item[GAS] Geometrically based Activity Scheduling 
\item[NCG] Node Coverage Grouping
\item[CG] Column Generation
\item[MLP] Maximum-network Lifetime Problem
\item[RMP] Restricted Master Problem
\item[PS] Pricing Subproblem
\item[GRASP] Greedy Randomized Adaptive Search Procedure
\item[VNS] Variable Neighborhood Search
\item[CSB] Cover Sets Balance
\item[CNSC] Correlated Node Set Computing
\item[HREF] High Residual Energy First
\item[SHM] Structural Health Monitoring
\item[ESA] Effective Sensing Area
\item[MSCR] Maximum Sensing Coverage Region
\item[DASSA] Distributed Adaptive Sleep  Scheduling Algorithm
\item[DTGA] Distributed Truncated Greedy Algorithm
\item[FIT]  Future Internet of the Things
\item[GUI] Graphical User Interface
\item[NED] NEtwork Description
\item[ns-2] Network Simulator-2
\item[OPNET] Optimized Network Engineering Tool
\item[GloMoSim]  Global Mobile System Simulator
\item[SENSE] Sensor Network Simulator and Emulator
\item[GTSNetS] Georgia Tech Sensor Network Simulator
\item[GNU] GNU's Not Unix
\item[LP] Linear Programming 
\item[GLPK] GNU Linear Programming Kit
\item[MPS]  Mathematical Programming System
\item[COIN-OR] COmputational INfrastructure for Operations Research 
\item[BCP]  Branch Cut and Price
\item[CBC]  COIN-OR Branch and Cut
\item[OPL] Optimization Programming Language 
\item[QP] Quadratic Programming 
\item[QCP] Quadratically Constrained Programming
\item[MILP] Mixed Integer Linear Programming
\item[MIQP] Mixed-Integer Quadratic Programming
\item[MIQCP] Mixed-Integer Quadratically Constrained Programming
\item[AIMMS] Advanced Interactive Multidimensional Modeling System
\item[AMPL] A Mathematical Programming Language
\item[GAMS] General Algebraic Modeling System
\item[MPL] Mathematical Programming Language
\item[UAV] Unmanned Aerial Vehicle
\item[WSNL] Wireless Sensor Node Leader
\item[MCU]  Microcontroller Unit
\item[CR] Coverage Ratio
\item[EC] Energy Consumption
\item[ASR] Active Sensors Ratio

\end{abbreviations}

   