Road Surface Characteristics for the Automotive 77 GHz Band

In order to achieve a safety proof of autonomous driving using simulations, information about the environment has to be determined, which is not sufficiently available until now. This work is concerned with road surfaces and their scattering of radar signals. As it is not enough to look at geometries, as it is already done for many ray tracing approaches, also material and composition have to be investigated. Therefore, measurements are performed using a SAR setup in a laboratory as well as open space measurements using a radar evaluation board on a testing area of the Federal Highway Research Institute. The SAR setup enables a quick estimation on differences in reflection of different test objects. With the result from the latter values for the relative permittivity are calculated for different road surface types exploiting Fresnel's equations. The differences in reflection depending on material and surface structure of the road see in the measurements of both setups are discussed in the paper.

Clarification of Eosinophilic Esophagitis Treatment in the DoD Retention Standards

ABSTRACT The DoD Instruction 6130.03, Volume 2, outlines the retention standards for the U.S. Military, providing guidance on medical conditions and treatments that are disqualifying for all branches of the military. This document states that patients with conditions requiring immunomodulating or immunosuppressant medications do not meet retention standards. Eosinophilic esophagitis is a common, chronic inflammatory disease of the esophagus that typically presents with dysphagia. Although proton pump inhibitors are effective at treating this disease in some cases, swallowed topical steroids are the most frequently used therapy within the DoD. These medications act locally in the esophagus and do not cause systemic side effects typical of oral steroid therapy, including immunosuppression. They are effective at inducing and maintaining disease remission and are generally well tolerated, with minimal side effects. We propose a brief amendment to this document to clarify the language used and avoid inappropriate Medical Evaluation Board referrals.

First bioimpedance assessment for detecting effects caused by environmental stimuli on Grapevine ( Vitis vinifera L.): preliminary results

Plants comprise biological tissues where bioimpedance could be measured. Changes in values of these impedance parameters within tissues are the result of changes in the chemical composition of the sap, cellular depolarization, and ion transport in response to external stimuli such as water availability, diseases, and photosynthesis activity, among others. Therefore, the environmental effects on the plant change its morphology and physiology would be related to bioimpedance. In this way, bioimpedance could become a novel and powerful technique used to analyze, in-situ and in real-time, the physiologic activity and status. In this study, we assess the Evaluation Board AD5933EBZ as a bioimpedance low-cost measurement device to perform observations of module and phase of the bioimpedance, aimed to correlate them with the effects of environmental stimuli such as irrigation, CO2 concentration, sun exposure and temperature level in the grapevine.

A Novel Points of Interest Selection Method For SVM-based Profiled Attacks

Abstract—Currently, one of the most powerful side channel attacks (SCA) is profiled attack. Machine learning algorithms, for example support vector machine (SVM), are currently used to improve the effectiveness of the attack. One issue of using SVM-based profiled attack is extracting points of interest (POIs), or features from power traces. Our work proposes a novel method for POIs selection of power traces based on the combining variational mode decomposition (VMD) and Gram-Schmidt orthogonalization (GSO). VMD is used to decompose the power traces into sub-signals (modes) and POIs selection process based on GSO is conducted on these sub-signals. As a result, the selected POIs are used for SVM classifier to conduct profiled attack. This attack method outperforms other profiled attacks in the same attack scenario. Experiments were performed on a trace data set collected from the Atmega8515 smart card with AES-128 run on the Sakura-G/W side channel evaluation board and the DPA Contest v4 dataset to verify the effectiveness of our method in reducing number of power traces for the attacks, especially with noisy power traces.Tóm tắt—Hiện nay, tấn công mẫu được xem là một trong những tấn công kênh kề (SCA) mạnh. Các thuật toán học máy, ví dụ như máy vector hỗ trợ (SVM), thường được sử dụng để nâng cao hiệu quả của tấn công mẫu. Một thách thức đối với tấn công mẫu sử dụng SVM là cần phải tìm được các điểm thích hợp (POI) hay các đặc trưng từ vết điện năng tiêu thụ. Công trình nghiên cứu này đề xuất một phương pháp mới đề tìm POI của vết điện năng tiêu thụ bằng cách kết hợp kỹ thuật phân tích mode biến phân (VMD) và quá trình trực giao hóa Gram-Schmidt (GSO). Trong đó, VMD được sử dụng để phân tách vết điện năng tiêu thụ thành các tín hiệu con còn gọi là VMD mode và việc lựa chọn POIs trên VMD mode này được thực hiện dựa trên quá trình GSO. Dựa trên phương pháp lựa chọn POIs này, chúng tôi đề xuất phương pháp tấn công mẫu sử dụng SVM có hiệu quả tốt hơn các tấn công mẫu khác ở cùng kịch bản tấn công. Các thí nghiệm tấn công được thực hiện trên tập dữ liệu được thu thập từ thẻ thông minh Atmega8515 cài đặt AES-128 chạy trên nền tảng thiết bị tấn công kênh kề Sakura-G/W và tập dữ liệu DPA Contest v4, để chứng minh tính hiệu quả của phương pháp của chúng tôi, trong việc giảm số lượng vết điện năng tiêu thụ cần cho cuộc tấn công, đặc biệt trong trường hợp các điện năng tiêu thụ có nhiễu.

Teknik Sortir Produk Pangan menggunakan Teknik Bio-impedansi

ABSTRAKKarakterisasi untuk memisahkan mutu-mutu yang berbeda dalam aplikasi industri dapat dipenuhi dengan menggunakan alat dengan kemampuan yang terbatas. Teknik sortir memanfaatkan sistem papan evaluasi Eval AD5933 EBZ berakurasi 0,5% dilakukan terhadap pisang kepok (musa spp) hasil perkebunan di Pulau Enggano, Provinsi Bengkulu. Sistem dinyalakan dengan sambungan listrik bertegangan 2,7 V – 5,5 V mengeksitasi gelombang dari frekuensi 4000 Hz sampai 100.000 Hz kepada tiga sampel, masing-masing tiga kali sapuan. Tanpa ada modifikasi yang diberikan, sistem mampu membedakan impedansi musa spp antara jenis-jenis mutu mentah, mengkal dan masak melalui diagram Argand yang digambar dari data impedansi masing-masing. Diagram Argand yang dihasilkan menunjukkan jenis mutu masak dari musa spp lebih besar (dalam Ohm) dari jenisj-jenis mutu di bawahnya. Sistem ini dapat membantu industri pembuatan tepung pisang yang memerlukan pemilahan jenis bahan baku bermutu tertentu. Kata kunci: sortir, mutu, buah pisang kepok, impedansi ABSTRACTCharacterization to sortir different qualities in industrial applications can be fulfilled by using a tool with limited capability. Sorting technique using a 0.5% accuracy Eval AD5933 EBZ evaluation board system has been carried out on kepok banana (musa spp) from the plantation of Enggano Island, Bengkulu province. The system powered by a 2.7 V – 5.5 V DC low-voltage excited waves from 4000 Hz to 100,000 Hz frequencies to three samples, three sweeps of each. Without any modification, the system has been able to segregate different quality types of unripe, almost ripe and ripe from their Argand diagram drawn from their impedance data. The Argand diagram characterizes that the quality type of banana ripe is more expanded (in Ohm) than the other quality types of below. The system is applicable for a banana flour manufacturing industry that requires the sorting of certain types of quality raw materials.Keywords: sorting, quality, musa banana, impedance

A Prototype Unit of a Distributed Sensor System for Ecological Monitoring

Introduction. In this article, the basic principles of ecological monitoring were considered, and the possibilities of constructing sensor systems were analysed. It was proposed to use the NB-IoT low-energy telecommunication standard as a basic wireless protocol for ecological system development, which ensures effective communication of network devices. A prototype of the system was constructed, and algorithms for receiving and transmitting signals were simulated.Aim. To construct a prototype of a transceiver based on the NB-IoT standard and perform its simulation. To utilize digital twin in MatLab to create the proposed system.Materials and methods. The prototype was constructed using the Xilinx Zedboard evaluation board and transceiver on AD9361 chip, and the simulation was performed using the MatLab 2010 software package.Results. The results of the simulation in the channel with the additive white Gaussian noise (AWGN) were obtained, and the level of the detected synchronization signals of the NB-IoT standard was determined. The receiver and transmitter of the NB-IoT standard were implemented on the Xilinx Zedboard evaluation board. The timing simulation results show that the designed system can be tested in a real environment. The power consumption and resource utilization of the constructed wireless sensor network prototype unit were determined. Conclusion. The results obtained via the simulation process show that the designed prototype of the communication system works correctly, and the produced signal meets all the requirements of the NB-IoT standard. The results can be used for creating a domestic manufactured, specialized integrated chip for data units of ecological monitoring systems.

High Priority Arbitration for Less Burst Data Transactions for Improved Average Waiting Time of Multi-Processor Cores

The multi-processor cores in SoC which have high burst data transactions can play a critical role while accessing the shared resources such as the off-chip memory. These processor cores can starve other processor cores that have less burst data transactions while accessing the same shared resources. The starving issue of other processor cores leads to degrade the entire system performance of the SoC. However, the arbiter architecture in the SoC design plays the best solution to manage different processor core requests and granting one of them to access the shared resources according to different scheduling algorithms. In this paper, we have designed AXI interconnect, which includes arbiter architecture to connect four processor cores represented by the AXI masters and the off-chip memory represented by the salve. Each processor core (AXI Master) uses the AXI4 interface protocol to improve the system performance and the arbiter based on the static fixed-priority algorithm to improve the average waiting time for all the processor cores. The SoC design architecture is modeled in System Verilog HDL; simulation and synthesis are done by using the Vivado tool and FPGA ZYNQ-7 ZC702 Evaluation Board (xc7z020clg484-1).

A Connected Component Labelling algorithm for multi-pixel per clock cycle video stream

This work describes the hardware implementation of a connected component labelling (CCL) module in reprogammable logic. The main novelty of the design is the ``full'', i.e. without any simplifications, support of a 4 pixel per clock format (4 ppc) and real-time processing of a 4K/UltraHD video stream (3840 x 2160 pixels) at 60 frames per second. To achieve this, a special labelling method was designed and a functionality that stops the input data stream in order to process pixel groups which require writing more than one merger into the equivalence table. The proposed module was verified in simulation and in hardware on the Xilinx Zynq Ultrascale+ MPSoC chip on the ZCU104 evaluation board.

A Connected Component Labelling algorithm for multi-pixel per clock cycle video stream

This work describes the hardware implementation of a connected component labelling (CCL) module in reprogammable logic. The main novelty of the design is the ``full'', i.e. without any simplifications, support of a 4 pixel per clock format (4 ppc) and real-time processing of a 4K/UltraHD video stream (3840 x 2160 pixels) at 60 frames per second. To achieve this, a special labelling method was designed and a functionality that stops the input data stream in order to process pixel groups which require writing more than one merger into the equivalence table. The proposed module was verified in simulation and in hardware on the Xilinx Zynq Ultrascale+ MPSoC chip on the ZCU104 evaluation board.