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[ES] El objetivo de este proyecto es realizar un estudio (fiabilidad, escalabilidad, tiempo de aprendizaje, tiempo de desarrollo, etc.) sobre la gama de microcontroladores Renesas Synergy (recursos, capacidades), así como el diseño e implementación de un sistema jerárquico basado en capas, que permita la abstracción en el desarrollo de aplicaciones IoT, entre una aplicación final y el canal de comunicación utilizado para transmitir los datos generados., [EN] The objective of this project is to carry out a study (reliability, scalability, learning time, development time, etc.) on the Renesas Synergy range of microcontrollers (resources, capabilities), as well as the design and implementation of a hierarchical system based on layers, which allows the abstraction in the development of IoT applications, between a final application and the communication channel used to transmit the generated data.

[ES] El objetivo de este proyecto es realizar un estudio (fiabilidad, escalabilidad, tiempo de aprendizaje, tiempo de desarrollo, etc.) sobre la gama de microcontroladores Renesas Synergy (recursos, capacidades), así como el diseño e implementación de un sistema jerárquico basado en capas, que permita la abstracción en el desarrollo de aplicaciones IoT, entre una aplicación final y el canal de comunicación utilizado para transmitir los datos generados., [EN] The objective of this project is to carry out a study (reliability, scalability, learning time, development time, etc.) on the Renesas Synergy range of microcontrollers (resources, capabilities), as well as the design and implementation of a hierarchical system based on layers, which allows the abstraction in the development of IoT applications, between a final application and the communication channel used to transmit the generated data.

[ES] El objetivo de este proyecto es realizar un estudio (fiabilidad, escalabilidad, tiempo de aprendizaje, tiempo de desarrollo, etc.) sobre la gama de microcontroladores Renesas Synergy (recursos, capacidades), así como el diseño e implementación de un sistema jerárquico basado en capas, que permita la abstracción en el desarrollo de aplicaciones IoT, entre una aplicación final y el canal de comunicación utilizado para transmitir los datos generados., [EN] The objective of this project is to carry out a study (reliability, scalability, learning time, development time, etc.) on the Renesas Synergy range of microcontrollers (resources, capabilities), as well as the design and implementation of a hierarchical system based on layers, which allows the abstraction in the development of IoT applications, between a final application and the communication channel used to transmit the generated data.

[ES] El objetivo de este proyecto es realizar un estudio (fiabilidad, escalabilidad, tiempo de aprendizaje, tiempo de desarrollo, etc.) sobre la gama de microcontroladores Renesas Synergy (recursos, capacidades), así como el diseño e implementación de un sistema jerárquico basado en capas, que permita la abstracción en el desarrollo de aplicaciones IoT, entre una aplicación final y el canal de comunicación utilizado para transmitir los datos generados., [EN] The objective of this project is to carry out a study (reliability, scalability, learning time, development time, etc.) on the Renesas Synergy range of microcontrollers (resources, capabilities), as well as the design and implementation of a hierarchical system based on layers, which allows the abstraction in the development of IoT applications, between a final application and the communication channel used to transmit the generated data.

Busbar distribution system is used as a modular infrastructure to carry electrical energy in low voltage grid. Due to the widespread usage in industrial areas, the power line communication possibilities should be investigated in terms of smart grid concept. This paper addresses modeling of the busbar distribution system as a transmission line and gives some suggestions on the link performance for narrowband power line communication for the first time in literature. Firstly, S-parameters of different current level busbars were measured up to 500 kHz for all possible two-port signal paths. The utilization of the frequency-dependent model was proposed to extract transmission line characteristics to eliminate the unwanted measurement effects. Particle swarm algorithm was used to optimize the model parameters with a good agreement between measured and simulated S-parameters. Additionally, link performance of busbar distribution system as a power line communication channel at 3 kHz-148.5 kHz band was examined for frequency shift keying and phase shift keying modulations under different network configurations such as varying busbar type, the line length between transmitter and receiver, branch number, and terminating load impedance. Obtained results were presented as bit-error-rate vs. signal to noise ratio graphs.

Busbar distribution system is used as a modular infrastructure to carry electrical energy in low voltage grid. Due to the widespread usage in industrial areas, the power line communication possibilities should be investigated in terms of smart grid concept. This paper addresses modeling of the busbar distribution system as a transmission line and gives some suggestions on the link performance for narrowband power line communication for the first time in literature. Firstly, S-parameters of different current level busbars were measured up to 500 kHz for all possible two-port signal paths. The utilization of the frequency-dependent model was proposed to extract transmission line characteristics to eliminate the unwanted measurement effects. Particle swarm algorithm was used to optimize the model parameters with a good agreement between measured and simulated S-parameters. Additionally, link performance of busbar distribution system as a power line communication channel at 3 kHz-148.5 kHz band was examined for frequency shift keying and phase shift keying modulations under different network configurations such as varying busbar type, the line length between transmitter and receiver, branch number, and terminating load impedance. Obtained results were presented as bit-error-rate vs. signal to noise ratio graphs.

Busbar distribution system is used as a modular infrastructure to carry electrical energy in low voltage grid. Due to the widespread usage in industrial areas, the power line communication possibilities should be investigated in terms of smart grid concept. This paper addresses modeling of the busbar distribution system as a transmission line and gives some suggestions on the link performance for narrowband power line communication for the first time in literature. Firstly, S-parameters of different current level busbars were measured up to 500 kHz for all possible two-port signal paths. The utilization of the frequency-dependent model was proposed to extract transmission line characteristics to eliminate the unwanted measurement effects. Particle swarm algorithm was used to optimize the model parameters with a good agreement between measured and simulated S-parameters. Additionally, link performance of busbar distribution system as a power line communication channel at 3 kHz-148.5 kHz band was examined for frequency shift keying and phase shift keying modulations under different network configurations such as varying busbar type, the line length between transmitter and receiver, branch number, and terminating load impedance. Obtained results were presented as bit-error-rate vs. signal to noise ratio graphs.

Colour centres in nanodiamonds are an important resource for applications in quantum sensing, biological imaging, and quantum optics. Here we report unprecedented narrow optical transitions for individual colour centres in nanodiamonds smaller than 200 nm. This demonstration has been achieved using the negatively charged silicon vacancy centre, which has recently received considerable attention due to its superb optical properties in bulk diamond. We have measured an ensemble of silicon-vacancy centres across numerous nanodiamonds to have an inhomogeneous distribution of 1.05 nmat 5 K. Individual spectral lines as narrower than 360 MHz were measured in photoluminescence excitation, and correcting for apparent spectral diffusion yielded an homogeneous linewidth of about 200 MHz which is close to the lifetime limit. These results indicate the high crystalline quality achieved in these nanodiamond samples, and advance the applicability of nanodiamond-hosted colour centres for quantum optics applications.

Subject, theme, aim. The subject of the research is strength of the band to pure bending for a large curvature. The aim is to establish patterns of stress distribution in the cross section of a flexible band using the plasticity condition Huber-Mises and distribution methods of the theory of plastic plane stress to the case of pure bending of the band.Method or methodology. It was based on the earlier decision of the problem of elastic-plastic state of the ring under external or internal pressure. During the study, the authors introduced a new parameter that defines the limits of the variable through which the stress components are expressed. This option is called a neutral corner and, depending on the ratio of the inner and outer radii of curvature of the band varies from 65 ˚ to 180 ˚.Results. We developed the technique of the theoretical solution of the problem, based on the introduction of the parameter defining the state of stress. Also we got the formulas for determining the position of the neutral surface stresses and dependence of the bending moment per unit bandwidth, the entered variableField of application of the results. Results of the solution of this problem can be used by the scientific and technical personnel engaged in the field of metal forming., Разработана методика и теоретически решена задача чистого изгиба узкой полосы с использованием энергетического условия пластичности. Установлено распределение радиальных и окружных напряжений по сечению полосы в зависимости от параметра, связанного с радиусом кривизны аналитической зависимостью. Введено понятие нейтрального угла, определяющего пределы изменения вышеупомянутого параметра, а, следовательно, и напряжённое состояние. Получены зависимости нейтрального угла от соотношения внешнего и внутреннего радиуса кривизны. Получены формулы для определения нейтрального радиуса через нейтральный угол. Определены допустимые пределы изменения отношения внутреннего радиуса кривизны к внешнему радиусу. Введено понятие коэффициента смещения нейтральной поверхности, построены зависимости этого коэффициента от толщины полосы. Произведён расчёт напряжённого состояния полосы конкретных размеров с использованием энергетического критерия пластичности и критерия пластичности максимальных касательных напряжений. Установлено, что в некоторых точках различие между полученными значениями окружного напряжения достигает 13%., Розроблена методика та теоретично розв’язана задача чистого згину вузької полоси з використанням енергетичної умови пластичності. Встановлено розподіл радіальних і окружних напружень по перерізу смуги залежно від параметра, пов'язаного з радіусом кривизни аналітичною залежністю. Введено поняття нейтрального кута, що визначає межі зміни вищезгаданого параметра, а, отже, і напружений стан. Отримано залежності нейтрального кута від співвідношення зовнішнього і внутрішнього радіуса кривизни. Отримано формули для визначення нейтрального радіусу через нейтральний кут. Визначені допустимі межі зміни відношення внутрішнього радіуса кривизни до зовнішньому радіусу. Введено поняття коефіцієнта зміщення нейтральної поверхні, побудовані залежності цього коефіцієнта від товщини смуги. Проведено розрахунок напруженого стану смуги конкретних розмірів з використанням енергетичного критерію пластичності та критерію пластичності максимальних дотичних напружень. Встановлено, що в деяких точках різниця між отриманими величинами тангенціального напруження досягає 13 %.

The tonal noise or vibration of air-cooled or water-cooled chillers with rotary twin screw compressors is crucial for environmental concerns. This work aims to perform the receiver tests regarding the radiated noise and structural vibration due to the compressor in different operating conditions. The sound pressure near the compressor is recorded by the one-third octave and narrow band frequency analyzers, respectively. For environmental concern, the one-third octave band spectrum is frequently adopted to evaluate the radiated noise, while the narrow band spectrum can be used to characterize the noise sources. The axial, vertical and horizontal accelerations on the compressor shell at the motor and oil-injection locations are also monitored to correlate the structure-borne noise. Other than the comparison of spectral content between radiated noise and compressor shell vibration, the frequency response functions and the coherence functions are examined to further characterize the relation between noise and vibration. This work lays out the general steps and measurement procedures for noise and vibration evaluation in primary stage for receiver tests considering different load capacities. The vibration energy transmission path tests as well as the refrigerant pulsation effects on the compressor noise and vibration can then be carried out accordingly.

The tonal noise or vibration of air-cooled or water-cooled chillers with rotary twin screw compressors is crucial for environmental concerns. This work aims to perform the receiver tests regarding the radiated noise and structural vibration due to the compressor in different operating conditions. The sound pressure near the compressor is recorded by the one-third octave and narrow band frequency analyzers, respectively. For environmental concern, the one-third octave band spectrum is frequently adopted to evaluate the radiated noise, while the narrow band spectrum can be used to characterize the noise sources. The axial, vertical and horizontal accelerations on the compressor shell at the motor and oil-injection locations are also monitored to correlate the structure-borne noise. Other than the comparison of spectral content between radiated noise and compressor shell vibration, the frequency response functions and the coherence functions are examined to further characterize the relation between noise and vibration. This work lays out the general steps and measurement procedures for noise and vibration evaluation in primary stage for receiver tests considering different load capacities. The vibration energy transmission path tests as well as the refrigerant pulsation effects on the compressor noise and vibration can then be carried out accordingly.

Deformable isosurfaces, implemented with level-set methods, have demonstrated a great potential in visualization and computer graphics for applications such as segmentation, surface processing, and physically-based modeling. Their usefulness has been limited, however, by their high computational cost and reliance on significant parameter tuning. This paper presents a solution to these challenges by describing graphics processor (GPU) based algorithms for solving and visualizing level-set solutions at interactive rates. The proposed solution is based on a new, streaming implementation of the narrow-band algorithm. The new algorithm packs the level-set isosurface data into 2D texture memory via a multi-dimensional virtual memory system. As the level-set moves, this texture-based representation is dynamically updated via a novel GPU-to-CPU message passing scheme. By integrating the level-set solver with a real-time volume renderer, a user can visualize and intuitively steer the level-set surface as it evolves. We demonstrate the capabilities of this technology for interactive volume segmentation and visualization.

Deformable isosurfaces, implemented with level-set methods, have demonstrated a great potential in visualization and computer graphics for applications such as segmentation, surface processing, and physically-based modeling. Their usefulness has been limited, however, by their high computational cost and reliance on significant parameter tuning. This paper presents a solution to these challenges by describing graphics processor (GPU) based algorithms for solving and visualizing level-set solutions at interactive rates. The proposed solution is based on a new, streaming implementation of the narrow-band algorithm. The new algorithm packs the level-set isosurface data into 2D texture memory via a multi-dimensional virtual memory system. As the level-set moves, this texture-based representation is dynamically updated via a novel GPU-to-CPU message passing scheme. By integrating the level-set solver with a real-time volume renderer, a user can visualize and intuitively steer the level-set surface as it evolves. We demonstrate the capabilities of this technology for interactive volume segmentation and visualization.

Deformable isosurfaces, implemented with level-set methods, have demonstrated a great potential in visualization for applications such as segmentation, surface processing, and surface reconstruction. Their usefulness has been limited, however, by two problems. First, 3D level sets are relatively slow to compute. Second, their formulation usually entails several free parameters that can be difficult to tune correctly for specific applications. The second problem is compounded by the first. This paper presents a solution to these challenges by describing graphics processor (GPU) based algorithms for solving and visualizing level-set solutions at interactive rates. Our efficient GPU-based solution relies on packing the level-set isosurface data into a dynamic, sparse texture format. As the level set moves, this sparse data structure is updated via a novel GPU to CPU message passing scheme. When the level-set solver is integrated with a real-time volume renderer operating on the same packed format, a user can visualize and steer the deformable level-set surface as it evolves. In addition, the resulting isosurface can serve as a region-of-interest specifier for the volume renderer. This paper demonstrates the capabilities of this technology for interactive volume visualization and segmentation.

Deformable isosurfaces, implemented with level-set methods, have demonstrated a great potential in visualization for applications such as segmentation, surface processing, and surface reconstruction. Their usefulness has been limited, however, by two problems. First, 3D level sets are relatively slow to compute. Second, their formulation usually entails several free parameters that can be difficult to tune correctly for specific applications. The second problem is compounded by the first. This paper presents a solution to these challenges by describing graphics processor (GPU) based algorithms for solving and visualizing level-set solutions at interactive rates. Our efficient GPU-based solution relies on packing the level-set isosurface data into a dynamic, sparse texture format. As the level set moves, this sparse data structure is updated via a novel GPU to CPU message passing scheme. When the level-set solver is integrated with a real-time volume renderer operating on the same packed format, a user can visualize and steer the deformable level-set surface as it evolves. In addition, the resulting isosurface can serve as a region-of-interest specifier for the volume renderer. This paper demonstrates the capabilities of this technology for interactive volume visualization and segmentation.

This paper considers analysis of methods for estimating the parameters of narrow-band signals arriving at an array of sensors. This problem has important applications in, for instance, radar direction finding and underwater source localization. The so-called deterministic and stochastic maximum likelihood (ML) methods are the main focus of this paper. A performance analysis is carried out assuming a finite number of samples and that the array is composed of a sufficiently large number of sensors. Several thousands of antennas are not uncommon in, e.g., radar applications. Strong consistency of the parameter estimates is proved, and the asymptotic covariance matrix of the estimation error is derived. Unlike the previously studied large sample case, the present analysis shows that the accuracy is the same for the two ML methods. Furthermore, the asymptotic covariance matrix of the estimation error coincides with the deterministic Cramer-Rao bound. Under a certain assumption, the ML methods can be implemented by means of conventional beamforming for a large enough number of sensors. We also include a simple simulation study, which indicates that both ML methods provide efficient estimates for very moderate array sizes, whereas the beamforming method requires a somewhat larger array aperture to overcome the inherent bias and resolution problem., QC 20111229