Zoran Stamenkovic

Universität Potsdam · Institute of Computer Science

While past research has emphasized the importance of late blight infection detection and classification, anticipating the potato late blight infection is crucial from the economic point of view as it helps to significantly reduce the production cost. Furthermore, it is necessary to minimize the exposure of potatoes to harmful chemicals and pesticid...

This paper presents a methodology for detecting unhealthy lemons in a lemon dataset based on a deep Convolutional Neural Network (CNN) and transfer learning. Initially, a CNN model was developed and trained, after which a new model was framed on the existing CNN model using transfer learning. The base model was trained to a satisfying level of accu...

The widespread use of IoT devices has led to the generation of a huge amount of data and driven the need for analytical solutions in many areas of human activities, such as the field of smart agriculture. Continuous monitoring of crop growth stages enables timely interventions, such as control of weeds and plant diseases, as well as pest control, e...

Spike-Timing-Dependent Plasticity (STDP) is a biological-plausible learning mechanism widely adopted for building Spiking Neural Networks (SNNs). It determines plasticity polarity and synapse strength change according to the timing difference between pre-and postsynaptic spikes. The learning curves of STDP differ in temporal window size, magnitude...

Agriculture is one of the most important activities that produces crop and food that is crucial for the sustenance of a human being. In the present day, agricultural products and crops are not only used for local demand, but globalization has allowed us to export produce to other countries and import from other countries. India is an agricultural n...

This paper aims to provide a comprehensive review on Elliptic Curve Cryptography (ECC), a public key cryptographic system and its applications. The paper discusses important mathematical properties and operations of elliptic curves, like point addition and multiplication operations and its implementation in cryptographic methods such as encryption...

Research in agriculture is a promising field, and crop prediction for particular land areas is especially critical to agriculture. Such prediction depends on the soil, minerals, and environment, the last of which has been short-changed by changing climatic conditions. Consequently, crop prediction for a particular zone presents difficulties for far...

Optical character recognition (OCR) is a computer vision technique that enables computers to recognize text from images. Text detection and computer vision have made significant advancements, leading to the development of various OCR technologies. However, selecting the most suitable OCR system for a specific purpose has become a challenging task....

In this growing world of the internet, most of our daily routine tasks are somehow connected to the internet, from smartphones to internet of things (IoT) devices to cloud networks. Internet users are growing rapidly, and the internet is accessible to everyone from anywhere. Data phishing is a cyber security attack that uses deception to trick inte...

Instruments for measuring the absorbed dose and dose rate under radiation exposure, known as radiation dosi-meters, are indispensable in space missions. They are composed of radiation sensors that generate current or voltage response when exposed to ionizing radiation, and processing electronics for computing the absorbed dose and dose rate. Among...

Agriculture is a growing field of research. In particular, crop prediction in agriculture is critical and is chiefly contingent upon soil and environment conditions, including rainfall, humidity, and temperature. In the past, farmers were able to decide on the crop to be cultivated, monitor its growth, and determine when it could be harvested. Toda...

The main aim of the paper is to provide effective and accurate solutions for the calculation of the support region of the μ-law logarithmic companding quantizers. A new solution for the starting point of iterative methods will be proposed, that provides very accurate value of the support region (being the main parameter needed for the design of the...

The appearance of pest insects can lead to a loss in yield if farmers do not respond in a timely manner to suppress their spread. Occurrences and numbers of insects can be monitored through insect traps, which include their permanent touring and checking of their condition. Another more efficient way is to set up sensor devices with a camera at the...

The soft error rate (SER) of integrated circuits (ICs) operating in space environment may vary by several orders of magnitude due to the variable intensity of radiation exposure. To ensure the radiation hardness without compromising the system performance, it is necessary to implement the dynamic hardening mechanisms which can be activated under th...

Up to date, there are very few books covering all the steps (from the system-level to the transistor-level) necessary to design, model, verify, implement, integrate, and test a silicon system. Our book targets this empty space and intents to bridge the gap between system and circuit designers, technologists, and physicist. It is extremely important...

This paper presents an overview of semiconductor materials used in gas sensors, their technology, design, and application. Semiconductor materials include metal oxides, conducting polymers, carbon nanotubes, and 2D materials. Metal oxides are most often the first choice due to their ease of fabrication, low cost, high sensitivity, and stability. So...

The soft error rate (SER) of integrated circuits (ICs) operating in space environment may vary by several orders of magnitude due to the variable intensity of radiation exposure. To ensure the radiation hardness without compromising the system performance, it is necessary to implement the dynamic hardening mechanisms, which can be activated under t...

Measurement of absorbed dose and dose rate is a common task in radiation environments such as space. This is accomplished with the specialized instruments known as radiation dosimeters. Among the most commonly used radiation dosimeters in space missions are those based on the Radiation Sensitive Field Effect Transistors (RADFETs). In this paper, we...

This paper presents a model of an occupancy detection system based on artificial neural networks and data stream processing. With already available datasets, an artificial neural network was trained and the accuracy of 98.88% was achieved. Furthermore, data stream processing can be used as a part of the system for collecting and analysing data from...

This paper considers the design of robust logarithmic µ-law companding quantizers for the use in analog-to-digital converters in communication system receivers. The quantizers are designed for signals with the Gaussian distribution, since signals at the receivers of communication systems can be very well modeled by this type of distribution. Furthe...

Single event transients (SETs) stand out as one of the major causes of soft errors in nanoscale CMOS integrated circuits. To reduce the need for exhaustive circuit simulations in the design of radiation-hard integrated circuits, the cost-effective approaches for characterization and modeling of SET generation effects in standard logic cells are req...

IC designers are required to handle silicon systems of the huge complexity. The problem is tackled with design re-use of processors and custom design of hardware accelerators and analog circuits, that leads to system-on-chip (SOC) design methodology. SOC design has to deal with a wide range: it starts with a functional description on system level,...

The robustness of standard CMOS combinational logic gates to Single Event Transients (SETs), in the presence of resistive open and resistive bridge defects, was investigated. Analysis was performed with SPICE simulations, using the resistors for modeling the open and bridge defects, and a standard double-exponential current source for modeling the...

The paper describes a comprehensive approach (at the device, circuit, and system levels) to design, implementation, integration, and verification of reliable communication systems on chips. The approach will be illustrated on three examples: a middleware switch processor for reliable internal satellite communications , a baseband processor for RF-M...

A decision support system (DSS) able to protect/treat plants and crops taking into account the temporal and spatial variability of physical, environmental, and agricultural parameters has been described. It is based on remote sensing and the most sophisticated machine learning techniques: Gaussian processes and deep neural networks. An example of k...

This paper considers the design of robust logarithmic µ-law companding quantizers for the use in analog-to-digital converters in communication system receivers. Quantizers are designed for signals with the Gaussian distribution, since signals at the receivers of communication systems can be well modeled by this type of distribution. In order to red...

This paper reviews the design and characterization of humidity and pH sensors manufactured in the printed circuit board (PCB), ink-jet, and screen printing technologies. The first one (PCB technology) provides robust sensors with PET film which can be exposed to harsh environment. The second (ink-jet technology) can manufacture sensors on flexible...

Today’s agriculture is heavily reliant on technology. Nevertheless, many technological challenges remain to be addressed. One of these challenges is an accurate assessment of the actual status of plant health. Real-time assessment of crop health, in particular, would enable better and timely tactical decisions for crop health management. In the sen...

In this paper, a novel Medium Access Control (MAC) protocol for industrial Wireless Local Area Networks (WLANs) is proposed and studied. The main challenge in indus-try automation systems is the ultra-low network latency with a target upper bound in the order of 1 ms while maintaining high network reliability and availability. The nov-elty of the p...

In this paper, a high reliability and ultra-low latency wireless MAC protocol for industry automation applications is introduced. The proposed MAC protocol supports the flexibility, mobility and scalability of the wireless industrial LAN, approaching the data throughput and latency performance of the recent wired industrial LAN. We demonstrate the...

DEALmac is our solution for a reliable and low-latency wireless Medium Access Control (MAC) protocol designed for industrial automation applications. It is a part of a large collaborative project called DEAL project. DEAL is one of eight coordinated projects funded by German BMBF in the framework of “ZDKI”, which means “Reliable Wireless Communicat...

The single event transients (SETs) are a common source of malfunction in nano-scale CMOS integrated circuits. For this reason, evaluation of the SET effects and application of appropriate measures for their mitigation are fundamental tasks in the design of advanced radiation hardened integrated circuits. In general, SET analysis is based on the mul...

A novel design of an E-plane bandstop waveguide filter with a double-sided printed-circuit insert is presented. Split-ring resonators are used as the resonating elements to obtain the bandstop response. The amplitude response of the waveguide resonator with a single resonating element on the insert is analyzed for various dimensions and positions o...

Remote monitoring of beehive colonies becomes an interesting topic in the field of precision agriculture. One of the most relevant parameters which give insight into beehive health is the bee activity at beehive entrance. This paper presents design of a dedicated bee counter which is located at the beehive entrance to count bees entering or leaving...

This tutorial will review design, fabrication and characterization of sensors intended for use in agriculture and monitoring of the relevant environmental parameters. Sensors were fabricated in two technologies: LTCC (low-temperature co-fired ceramics) and flexible technology. The first one provides robust sensors which can be exposed to harsh envi...

A review of advanced wireless sensor nodes, networks , and applications in precision agriculture has been presented. Features of several commercial and prototype sensor node platforms designed and implemented for agricultural applications have been described. Basics of sensor network protocols and topologies have been reviewed together with numerou...

A review of advanced wireless sensor nodes, networks, and applications in precision agriculture has been presented. Features of several commercial and prototype sensor node platforms designed and implemented for agricultural applications have been described. Basics of sensor network protocols and topologies have been reviewed together with numerous...

This paper presents the IHPNode platform in the context of precision farming (or Agriculture 4.0). This platform is an experimental platform for wireless sensor network (WSN) applications and can be used in precision farming as one of the most promising WSN application areas. The paper presents the requirements of the applications, the features of...

Internet of Things (IoT) applied in healthcare system has huge potential to improve patients' quality of life. Representing network of devices embedded with electronics and sensors, IoT enables constant monitoring of vital body functions, tracking of physical activities of a person and aides rehab physical therapy. Such an IoT-based system would al...

This paper analyzes the single event transient (SET) response of a single event latchup (SEL) protection switch (SPS cell) designed in the 130 and 250 nm bulk CMOS technologies. The analysis has been conducted through the SPICE simulations, using the standard double exponential current source as the SET model. It has been confirmed that the 130 nm...

Wireless sensor network applications range from industrial automation and control, agricultural and environmental protection, to surveillance and medicine. In most applications, data are highly sensitive and must be protected from any type of attack and abuse. Security challenges in wireless sensor networks are mainly defined by the power and compu...

The paper describes a hardware solution for a custom WLAN Medium Access Control (MAC) layer, designed for Industry Automation applications. Architecture and implementation details of the MAC processor including system simulation and test procedures are presented.

In spite of the huge research efforts and respectable scientific achievements, there are still challenges regarding the use of commercial ASIC technologies in space and safety-critical applications. This work presents a design methodology for fault-tolerant ASIC that is based on radiation-hard technology, redundant circuits with latchup protection,...

A novel compact dual-band bandpass waveguide filter is presented in this paper. H-plane metal inserts with complementary split-ring resonators are implemented as resonating elements in the standard (WR-90) rectangular waveguide. Design starts from the models of the waveguide resonators with two resonant frequencies (9 GHz and 11 GHz) using a single...

Coherent receivers provide better demodulation characteristics then non-coherent receivers especially with higher bit error probability signals. They require synchronization with received signal using preamble which is transmitted at beginning of IEEE 802.15.4 packet. Software defined radio does not allow adjustment of local oscillator frequency us...

We have considered implementation of parallel test pattern generator based on a linear feedback shift register (LFSR) with multiple outputs used as a building block in built-in-self-test (BIST) design within SoC. The proposed design can drive several circuits under test (CUT) simultaneously. The mathematical procedure for concurrent pseudo random n...

The circuit-level simulation analysis of the single event transient response of an on-chip single event latchup protection switch (SPS cell), previously designed and developed in the IHP 250 nm CMOS process, is presented. The SPS cell provides the latchup protection for standard cells on the principle of power domain control. It is based on a PMOS...

The paper presents an algorithm for localization of endoscopic capsules inside the human body. The goal is to determine the position of capsules by measuring the power of received electromagnetic signal on the human skin taking into account losses within the body. The algorithm was first developed and simulated in MATLAB. Simulation results prove i...

A single event latchup protection switch (SPS) has been developed in the IHP 250 nm bulk CMOS technology. The SPS has been designed as a standard library cell intended for implementation in the radiation-tolerant application specific integrated circuits (ASICs). It provides detection of single event latchup and subsequent shutdown of power supply t...

The lifetime of a wireless sensor node is determined by the energy required to complete specific sensor node tasks defined by sensor network application. To estimate the energy of a sensor node for specific application, it is required to profile its activity in a given application scenario. This paper presents an analytical approach to wireless sen...

A novel design of second-order dual-band H-plane bandpass waveguide filter is presented in this paper. Filter design is relatively simple and is based on the use of complementary split ring resonators, implemented as metal septa, with properly shaped slots, in the transverse planes of the standard (WR-90) rectangular waveguide. The positions of the...

Wireless sensor network consists of a large number of simple sensor nodes that collect information from external environment with sensors, then process the information, and communicate with other neighboring nodes in the network. Usually, sensor nodes operate with exhaustible batteries unattended. Since manual replacement or recharging of the batte...

Sensor networks usually complete several data processing tasks that include the acquiring sensor samples, preparing messages containing data, and sending/receiving radio messages. In this paper, we consider the impact of the sensing subsystem, intended for area monitoring applications, and its effect on the power consumption of sensor networks. We...