8 results on '"wide application"'
Search Results
2. Parameter identification of subsynchronous oscillation based on FastICA and MP algorithms.
- Author
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Li, Kuan, Zhang, Wanjie, Wang, Hong, Li, Yudun, and Liu, Meng
- Subjects
PARAMETER identification ,OSCILLATIONS ,POWER electronics ,INDEPENDENT component analysis ,EIGENVALUES - Abstract
The online identification of subsynchronous oscillation (SSO) became possible with a wide application of wide area measurement system. However, there is more power electronic equipment in the power system. So, there are strong interference noises in the sampled signal, and the veracity of vibration modal parameters is influenced. The fast independent component analysis (FastICA) could separate noise signal from the observed signal. This study presented the pretreatment of sampling signal through the FastICA and the identification of the SSO parameter through matrix pencil (MP). The recognition accuracy could be enhanced based on FastICA–MP. This study sets the ideal example and the IEEE first benchmark model as the simulation examples. The simulation results show that the FastICA could separate noise signal effectively, and the MP identification accuracy is improved. The research result lays the foundations for the design of supplementary subsynchronous damping controller. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
3. Parameter identification of subsynchronous oscillation based on FastICA and MP algorithms
- Author
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Kuan Li, Wanjie Zhang, Hong Wang, Yudun Li, and Meng Liu
- Subjects
damping ,power transmission control ,eigenvalues and eigenfunctions ,oscillations ,vibrations ,power system measurement ,independent component analysis ,parameter estimation ,noise signal ,observed signal ,SSO parameter ,FastICA–MP ,MP identification accuracy ,supplementary subsynchronous damping controller ,parameter identification ,subsynchronous oscillation ,MP algorithms ,online identification ,wide application ,wide area measurement system ,power electronic equipment ,power system ,strong interference noises ,sampled signal ,vibration modal parameters ,fast independent component analysis ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
The online identification of subsynchronous oscillation (SSO) became possible with a wide application of wide area measurement system. However, there is more power electronic equipment in the power system. So, there are strong interference noises in the sampled signal, and the veracity of vibration modal parameters is influenced. The fast independent component analysis (FastICA) could separate noise signal from the observed signal. This study presented the pretreatment of sampling signal through the FastICA and the identification of the SSO parameter through matrix pencil (MP). The recognition accuracy could be enhanced based on FastICA–MP. This study sets the ideal example and the IEEE first benchmark model as the simulation examples. The simulation results show that the FastICA could separate noise signal effectively, and the MP identification accuracy is improved. The research result lays the foundations for the design of supplementary subsynchronous damping controller.
- Published
- 2019
- Full Text
- View/download PDF
4. Adaptive appearance separation for interactive image segmentation based on Dense CRF.
- Author
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Peng, Zili and Li, Qiaoliang
- Abstract
Interactive segmentation has recently become a hot topic for its wide application. The authors propose an efficacious appearance separation model for interactive binary segmentation, which incorporates the difference of foreground and background colour models and the difference of corresponding geodesic models into the popular densely connected conditional random field (Dense CRF) framework. The proposed method can adaptively set relevant parameter values in this framework according to the characteristics of target images in a per‐image manner, therefore, it gets rid of the dependence on specific datasets. After accomplishing a mean‐field inference, the authors are able to get satisfactory results without the time‐consuming parameter learning process and multiple iterative optimisations. Overall, the proposed approach is highly efficient and mitigates the contradiction between accuracy and segmentation efficiency. In addition, the proposed approach reduces the efforts of scribble‐style interaction from users. The experimental results on three famous datasets show that the proposed method is superior to the other five new algorithms released in recent years regarding accuracy, and is faster than or close to them in runtime. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
5. Application of multimedia technology in the Internet of things
- Author
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Bačanek, Marija and Geček, Robert
- Subjects
tehnologija ,Internet ,multimedia ,wide application ,multimedijski podaci ,široka primjena ,Internet of Things ,smart devices ,Internet stvari ,korisnik ,TEHNIČKE ZNANOSTI. Grafička tehnologija. Procesi grafičke reprodukcije ,TECHNICAL SCIENCES. Graphic Technology. Processes of Graphic Reproduction ,technology ,pametni uređaji ,multimedia data ,user ,multimedija - Abstract
Ovaj rad se bavi istraživanjem o primjeni multimedijske tehnologije u Internet stvarima. Objašnjeno je što su to točno Internet stvari i kako one funkcioniraju i poboljšavaju upotrebu pametnih uređaja. Primjena multimedijske tehnologije, komponenti, podataka uvelike poboljšava i povećava korisnost Internet stvari. Kako bi se omogućila primjena i rad multimedije u Internet stvarima istražit će se ključne tehnološke komponente koje to omogućuju, kao što su: multimedijski senzori, računarstvo u oblaku, magli i na rubu, višeagentni sustavi, protokoli za multimedijske podatke i mnoge druge. Proučit će se gdje se sve mogu primjenjivati i na koji način multimedijske Internet stvari pomažu u poboljšanju i razvoju velikog broja raznolikih sustava od industrijske proizvodnje, poljoprivrede, pametnog zdravstva do zabavne industrije i mnogih drugih, te brojne pogodnosti koje pružaju za krajnjeg korisnika. The main research of this work is application of multimedia technologies in Internet of Things. It explains what are the Internet of Things and how they work and improve the use of smart devices. The application of multimedia technologies, components and multimedia data greatly improves and increases the usefulness of the Internet of Things. This work also explains key technological components that enable application and operation of multimedia in the Internet of Things such as multimedia sensors, cloud computing, fog and edge computing, multi-agent systems, multimedia data protocols, and many others. I will research where multimedia Internet things can be applied and how they improve and develop a large number of diverse systems from industrial production, agriculture, smart health to entertainment industries and many others. Here will be also shown many benefits which multimedia Internet of things provide for the end user.
- Published
- 2021
6. CsPbX3 (X = Cl, Br, I) perovskite quantum dots embedded in glasses: Recent advances and perspectives.
- Author
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Li, Sixing, Pan, Yan, Wang, Wenming, and Li, Yong
- Subjects
- *
QUANTUM dots , *PEROVSKITE , *OPTOELECTRONIC devices , *GLASS , *OPTICAL properties , *LUMINESCENCE - Abstract
• The preparation methods of glass containing CsPbX 3 quantum dots are summarized. • Crystallization behavior of glass containing CsPbX 3 quantum dots is summarized. • The luminescence mechanism of glass containing CsPbX 3 quantum dots is summarized. • Applications of glass containing CsPbX 3 quantum dots are summarized. • The future development of glass containing CsPbX 3 quantum dots is predicted. The glass containing CsPbX 3 (X = Cl, Br, I) perovskite quantum dots (CsPbX 3 QDs@glass) has a wide range of applications in the fields of optoelectronic devices, photocatalysis, and sensors due to their tunable emission, high-efficiency luminescence, narrow-band emission, and high stability. The synthesis method, crystallization process, photoluminescence mechanism, spectral modulation, and application of the CsPbX 3 QDs@glass are introduced, and the conditions for obtaining high transparency and excellent optical properties are discussed in detail. The achievement of research in recent years is summarized and the future challenges of the CsPbX 3 QDs@glass for the application are also discussed. It is expected that this review can provide valuable insights into the current status of CsPbX 3 QDs@glass and stimulate new ideas and further research on their practical applications. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
7. Fabrication, photoluminescence and applications of quantum dots embedded glass ceramics.
- Author
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Xue, Junpeng, Wang, Xiangfu, Jeong, Jung Hyun, and Yan, Xiaohong
- Subjects
- *
QUANTUM dots , *CERAMICS , *GLASS-ceramics , *PHOTOLUMINESCENCE , *OPTICAL amplifiers , *PLASTIC optical fibers , *GLASS , *TRANSPARENT ceramics - Abstract
• The preparation methods of quantum dots embedded glass ceramics are summarized. • Crystallization behavior of quantum dots embedded glass ceramics is summarized. • The luminescence mechanism of QDs embedded glass ceramics is summarized. • Applications of quantum dots embedded glass ceramics are summarized. • The future development of quantum dots embedded glass ceramics is predicted. Quantum dots (QDs) embedded glass ceramics have been widely studied in laser crystals, LEDs, optical fiber amplifiers, optoelectronic devices, photocatalysts and sensors owing to the size dependent multicolor fluorescence emissions, crystal field controllability, high transparency and stability, and high temperature sensitivity. The rapid advancements of QDs embedded glass ceramics are reviewed in detail. The synthetic methods, crystallization theory, spectral modulation, nonlinear optical property, photoluminescence mechanism, and applications of QDs embedded glass ceramics are exhibited. The most important results obtained in each case are summarized, and the key challenges in market viability are also discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
8. Plate heat exchangers
- Author
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Kovač Marija and Bucić-Kojić, Ana
- Subjects
brtve ,wide application ,nehrđajuči čelik ,široka primjena ,gaskets ,reljefne ploče ,corrugated plates ,pločasti izmjenjivači topline ,BIOTECHNICAL SCIENCES. Food Technology. Engineering ,stainless steel ,BIOTEHNIČKE ZNANOSTI. Prehrambena tehnologija. Inženjerstvo ,plate heat exchangers - Abstract
Izmjenjivači topline su procesni uređaji pomoću kojih se toplina prenosi sa toplijeg fluida na hladniji kroz čvrstu stjenku, bez kondenzacije i isparavanja fluida. Pločasti izmjenjivači topline sastavljeni su od niza reljefnih ploča pričvršćenih u okvir. Ploče su najčešće izrađene od nehrđajućeg čelika, a upotrebljeni materijal mora biti kompatibilan sa procesnim medijem. Nabori na pločama osiguravaju optimalni prijenos topline. Razmak između susjednih ploča tvori protočne kanale u koje fluid ulazi i zatim izlazi kroz otvore na rubovima ploča. Brtve oko rubova ploča i oko otvora stvaraju barijeru između kanala te sprječavaju miješanje fluida i njihovo istjecanje u okolinu. Pločasti izmjenjivači topline imaju široku primjenu zbog svojih prednosti pred ostalim izmjenjivačima, kao što su: bolji prijenos topline, mogućnost različitih izvedbi te kraće vrijeme servisiranja. Posebno je zanimljiva primjena u prehrambenoj industriji, gdje su pogodni jer omogućuju održavanje visokog stupnja sanitacije te procesiranje visokoviskoznih fluida i fluida kod kojih je moguće taloženje. Heat exchangers are process equipment for transferring heat between hot and cold streams through a solid wall, without condensation and evaporation of fluid. Plate heat exchangers are consisted of a pack of corrugated plates on a frame. Plates are usually made of stainless steel, and the used material needs to be compatible with the process media. Plate corrugations ensure optimal heat transfer. The spacing between adjacent plates forms the flow channels in which fluid enters and then exits through channels at the corners. Gaskets around the edges of the plate and around the hole, creating a barrier between the channels, prevent the fluid mixing and their leaking into the environment. Plate heat exchangers are widely used because of its advantages over other heat exchangers, such as greater heat transfer capacity, possibility of different performance and shorter service time. It is especially interesting their application in the food industry. The accessibility of the heat exchange surface for cleaning makes them particularly suitable for fouling services, highly viscous fluids processing and wehere a high degree of sanitation is required.
- Published
- 2011
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