Ústav soudního inženýrství
Browse
Recent Submissions
- ItemProposal of Legal Status of the Expert Valuation Institute Objectifying the Acquisition Process(MINISTRY DEFENCE CZECH REPUBLIC, UNIV DEFENCE BRNO, 2024-06-30) Hak, Jan; Foltin, Pavel; Pospíšilová, Dagmar; Pospíšil, KarelThe process of procuring military equipment, technology, material, and associated services (VM) is frequently shrouded in concerns about cost-effectiveness and, in some instances, even becomes the focus of law enforcement investigations. This often leads to delays in strategic investments and exposes involved individuals to the risk of criminal charges. Additionally, there is a notable lack of capacity to impartially evaluate the overall investment's efficacy. Consequently, the ,,Znalec" (Expert Witness) project was initiated as a part of the defense research program. Its objective is to explore the feasibility of establishing an expert institute that could impartially assess the value of the military procurements, set a standard for evaluating these assets, and outline a training program for relevant experts
- ItemConcept of unification of mutually incompatible information models and data stored in relational databases of road administrations(ROAD & BRIDGE RES INST-INST BADAWCZY DROG & MOSTOW, 2024-05-01) Pospíšil, Karel; Janků, Michal; Stryk, Josef; Pospíšil, Vítězslav; Pospíšilová, DagmarRoad Administrations (RAs) implement Building Information Modelling (BIM) through pilot projects developed for new or reconstructed structures. Each model is processed with respect to BIM standards and practices valid at the time of its creation. Consequently, models are incompatible and cannot be interconnected to create a combined model of the managed network or even its selected parts. Existing structures are often not included in the BIM effort until some major repair is planned. In addition, RAs usually store data on fixed and variable parameters of structures in relational databases. This results in a situation in which a relatively small number of structures are included in mutually incompatible models and data regarding the majority of structures is contained in relational databases. It creates a heterogeneous data environment for RAs. The goals of the paper are as follows: to analyse the described problem, to propose a method of model unification models, a method of creation of simplified compatible information models using data on existing structures stored in relational databases and a method of storing data at the level of the managed network, to support RA asset management systems which can be treated as a dynamic part of BIM.
- Item0.3-V Voltage-Mode Versatile First-Order Analog Filter Using Multiple-Input DDTAs(MDPI, 2023-07-26) Kumngern, Montree; Khateb, Fabian; Kulej, Tomasz; Šteffan, PavelThis paper presents a versatile first-order analog filter using differential difference transconductance amplifiers (DDTAs). The DDTA employs the bulk-driven (BD) multiple-input MOS transistors technique (MI-MOST) operating in the subthreshold region. This results in low-voltage and low-power operational capability. Therefore, the DDTA, designed using 130 nm CMOS technology from UMC in the Cadence environment, operates with 0.3 V and consumes 357.4 nW. Unlike previous works, the proposed versatile first-order analog filter provides first-order transfer functions of low-pass, high-pass, and all-pass filters within a single topology. The non-inverting, inverting, and voltage gain of the transfer functions are available for all filters. Furthermore, the proposed structure provides high-input and low-output impedance, which is required for voltage-mode circuits. The pole frequency and voltage gain of the filters can be electronically controlled. The total harmonic distortion of the low-pass filter was calculated as -39.97 dB with an applied sine wave input signal of 50 mV(pp)@ 50 Hz. The proposed filter has been used to realize a quadrature oscillator to confirm the advantages of the new structure.
- ItemCurrent-Mode First-Order Versatile Filter Using Translinear Current Conveyors with Controlled Current Gain(MDPI, 2023-07-31) Kumngern, Montree; Jongchanachavawat, Wirote; Phatsornsiri, Punnavich; Wongprommoon, Natapong; Khateb, Fabian; Kulej, TomaszThis paper offers a new current-mode first-order versatile filter employing two translinear current conveyors with controlled current gain and one grounded capacitor. The proposed filter offers the following features: realization of first-order transfer functions of low-pass, high-pass, and all-pass current responses from single topology, availability of non-inverting and inverting transfer functions for all current responses, electronic control of current gain for all current responses, no requirement of component-matching conditions for realizing all current responses, low-input impedance and high-output impedance which are required for current-mode circuits, and electronic control of the pole frequency for all current responses. The proposed first-order versatile filter is used to realize a quadrature sinusoidal oscillator to confirm the advantage of the new topology. To confirm the functionality and workability of new circuits, the proposed circuit and its application are simulated by the SPICE program using transistor model process parameters NR100N (NPN) and PR100N (PNP) of bipolar arrays ALA400-CBIC-R from AT & T.
- ItemTransformation of garden settlements into a residential zone(Mendel University in Brno, 2023-05-31) Pokorná, Sofie; Hlavinková, VítězslavaThe content of this paper is research on gardening settlements. These are special urban areas that, as recreational spaces for city residents, contribute to the maintenance of their mental and physical condition. At the same time, from the point of view of environmental and ecological urbanism, they are a specific ecosystem of so-called green infrastructure, whose importance is seen, for example, in the prevention of overheating in urban areas in the summer months. At the same time, the economic aspect cannot be overlooked, namely the savings in the city budget for the maintenance of greenery. For the purpose of this research, the gardening settlements in Brno were monitored. The paper deals with the gradual transformation of these settlements into residential space. It analyses the economic factors and looks for parallels in the construction of emergency colonies in the 1920s in Brno. The article draws attention to the disruption of the local ecosystem and its transformation, the disappearance of the recreational zone and the benefits of urban green infrastructure.