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Optimal Design for MIMO Relay System
2013
Journal of Signal and Information Processing
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Recently, multiple-input multiple-output (MIMO) relay technique has been received great attention due to its prominent ability to provide broad coverage and enhance the link reliability and spectral efficiency. In this paper, an overview of optimal design for single user and multiuser non-regenerative MIMO relay systems is proposed. We explore some key designs of source node and destination node as well as relay node processing matrices using minimum mean square error (MMSE) criterion under the
doi:10.4236/jsip.2013.43b016
fatcat:fpjwflviyndejlpbn7uog2pane
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... transmit power constraints. Simulation results compare different methods in terms of the MSE and bit error rate (BER) performance.
Study on Wireless Communication Distributed Control System in Chemical Production Process Control
2018
Chemical Engineering Transactions
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To understand the control of wireless communication distributed control system in chemical production. With industrial chemical production as the research subject, this article designs the functional modules of wireless communication distributed control system and analyzes the application effect of the system through experiment. Research results show that the system designed in this article can achieve the goal of low power consumption and facilitate the chemical enterprises in cutting down
doi:10.3303/cet1866153
doaj:637e051fc7cc4d778787f6f381b9c593
fatcat:w5zzky76qjb7lpmk5qo5ap5hqy
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... r production cost. STM32 chip may be used as main CPU of wireless communication computing control system and control the chemical production process through the network.
Energy Efficient SWIPT Based Mobile Edge Computing Framework for WSN-Assisted IoT
2021
Sensors
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With the increasing deployment of IoT devices and applications, a large number of devices that can sense and monitor the environment in IoT network are needed. This trend also brings great challenges, such as data explosion and energy insufficiency. This paper proposes a system that integrates mobile edge computing (MEC) technology and simultaneous wireless information and power transfer (SWIPT) technology to improve the service supply capability of WSN-assisted IoT applications. A novel
doi:10.3390/s21144798
fatcat:5ltjmu2xm5e7vpc62utqvh4zcm
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... ation problem is formulated to minimize the total system energy consumption under the constraints of data transmission rate and transmitting power requirements by jointly considering power allocation, CPU frequency, offloading weight factor and energy harvest weight factor. Since the problem is non-convex, we propose a novel alternate group iteration optimization (AGIO) algorithm, which decomposes the original problem into three subproblems, and alternately optimizes each subproblem using the group interior point iterative algorithm. Numerical simulations validate that the energy consumption of our proposed design is much lower than the two benchmark algorithms. The relationship between system variables and energy consumption of the system is also discussed.
99mTc-dextran lymphoscintigraphy can detect sentinel lymph node in breast cancer patients
2014
Experimental and Therapeutic Medicine
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The aim of this study was to retrospectively determine the accuracy and feasibility of using 99mTc-dextran (DX) lymphoscintigraphy for the localization of sentinel lymph nodes (SLNs) in breast cancer patients. The relevant factors affecting lymphoscintigraphy were also investigated. In this study, 235 breast cancer patients underwent 99mTc-DX lymphoscintigraphic imaging and examination by a γ-probe method in combination with blue dye staining to detect SLNs. The detection results were
doi:10.3892/etm.2014.2048
pmid:25452784
pmcid:PMC4247278
fatcat:d2wtp27vmbd6hbiu3tkj4la2w4
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... in combination with rapid frozen pathology results to determine whether SLN metastasis was positive or negative. SLNs were identified in 191 patients by γ-probe detection among the 202 patients that tested positive by lymphoscintigraphic imaging, a coincidence rate of 94.6%. This suggested that lymph node metastasis had occurred and could be detected using lymphoscintigraphy. The axillary status of the breast cancer patients was also predicted using lymphoscintigraphy and the false-negative rate, sensitivity, specificity and positive predictive value were 13.3% (4/30), 90.7% (39/43), 23.4% (45/192) and 13.5% (21/155), respectively. The age of the patient, menstrual status, tumor location, tumor size, pathological type, preoperative biopsy and neoadjuvant chemotherapy were unrelated to the success of lymphoscintigraphy (P>0.05). 99mTc-DX lymphoscintigraphy is able to exactly determine the location of SLN in breast cancer patients, and can be used for guiding γ-probe methods and sentinel lymph node biopsy.
A Scaling Scheme for DCT Precoded Optical Intensity-Modulated Direct Detection Systems
2015
Journal of Electrical and Computer Engineering
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Acknowledgments The authors would like to thank Professor Lin Chen for his supervision and providing the experimental test equipment. ...
doi:10.1155/2015/367693
fatcat:qzh7uij2ijfejjpgiawo7w3enq
Disrupted interhemispheric resting-state functional connectivity and structural connectivity in first-episode, treatment-naïve generalized anxiety disorder
2019
Journal of Affective Disorders
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Disperse dyeing for polyethylene terephthalate (PET) fiber in different non-aqueous solvent dyeing systems have been extensively studied over the past decades. In the present work, disperse dyeing for PET was investigated in a silicone solvent dyeing system. The influence of accelerant on the fiber swelling, uptake of dye, K/S value of dyed fiber, and dye solubility in the silicone solvent were systematically investigated. Compared with no accelerant, the final uptake of the disperse dye (C. I.
doi:10.1016/j.jad.2019.03.082
fatcat:b77mebdqared3envrtujl2a7pe
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... Disperse Blue 367) could increase to 81% with 20% accelerant in the silicone solvent dyeing system, and the K/S value of dyed fiber was also higher (3.3 for no accelerant vs. 13.2 for accelerant). The influence of accelerant on the performance of disperse dyeing was also studied. Firstly, the solubility of the disperse dye in the silicone solvent can be decreased by the accelerant. Moreover, the solubility of the disperse dye is inversely proportional to the K/S value and the uptake of the dye. In addition, although the silicone solvent can diffuse to the inner fiber and has a partial swelling in the PET fiber, the swelling of PET can be improved by the accelerant. Furthermore, the swelling of fiber can reach equilibrium when the amount of accelerant was 15% (the weight of fiber). Therefore, this eco-friendly dyeing technology has considerable potential for application to a broad array of chemical fibers. solvent using an organic solvent as the dyeing medium [14] . However, this dyeing technology was often carried out by using hydrocarbon solvents which are not environment-friendly, such as hexane, cyclohexane, and n-heptane, as the continuous phase medium [15] . In recent years, some researchers have begun to choose new dyeing media to achieve a suitable eco-friendly dyeing system [20] . In our previous investigations [21, 22] , D5 (decamethylcyclopentasiloxane) was chosen as a dyeing medium to prepare a silicone solvent dyeing system for dyeing PET with disperse dye. The chemical structure of D5 is shown in Figure 1 [ [23] [24] [25] . In the D5 dyeing system, PET can be dyed with pure disperse dye without adding any dispersant. Furthermore, the dyeing medium can be recycled after dyeing. The dyeing performance is equivalent to that of traditional high temperature and high-pressure dyeing.
A clinical KPC-producing Klebsiella michiganensis strain carrying IncFII/IncFIA (HI1)/IncFIB (K) multiple replicon plasmid
2023
Frontiers in Microbiology
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Klebsiella michiganensis is an increasingly important bacterial pathogen causing nosocomial infections in clinical patients. In this study, we described the molecular and genomic characteristics of a carbapenem-resistant K. michiganensis strain KM166 cultured from a one-month premature baby's blood sample. KM166 showed lower biofilm forming ability in optical density (OD) than K. pneumoniae NTUH-K2044 (0.271 ± 0.027 vs. 0.595 ± 0.054, p = 0.001), and the median lethal dose (0.684 lg CFU/mL) was
doi:10.3389/fmicb.2022.1086296
pmid:36687642
pmcid:PMC9845883
fatcat:iaipp26axfaxdlb2p2qtxcrkmq
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... lower than K. pneumoniae strain NTUH-K2044 (6.679 lg CFU/mL). A IncFII/IncFIA(HI1)/IncFIB(K) multiple replicon plasmid in KM166 was identified carrying three replicon types. It has low homology to Escherichia coli pMRY09-581ECO_1 and the highest homology similarity to the INcFIA/INcFII(p14)-type plasmid in K. michiganensis strain fxq plasmid pB_KPC, suggesting that this multiple replicon plasmid was unlikely to have been transmitted from E. coli and probably a transfer of repFIB replicon genes from other K. michiganensis strains into the INcFIA/INcFII(p14)-type plasmid of KM166 had occurred. Mapping of the gene environment revealed that blaKPC-2 in KM166 plasmid 3 had high identity and same Tn3-tnpR-IS481-blaKPC-2-klcA_1 genomic context structure with K. pneumoniae strain JKP55, plasmid pKPC-J5501, and blaKPC-2-carrying plasmid proved to be autonomously transferred under the help of mobile genetic elements into Escherichia coli 600 by plasmid conjugation experiment. In conclusion, we have characterized a K. michiganensis strain carrying multi-replicon IncFII/IncFIA(HI1)/IncFIB(K) plasmid and blaKPC-2-carrying IncFII(p14)/IncFIA plasmid in this study, which provided insights about the evolutionary diversity of plasmids carried by K. michiganensis.
Genomic Evolution of ST11 Carbapenem-Resistant Klebsiella pneumoniae from 2011 to 2020 Based on Data from the Pathosystems Resource Integration Center
2022
Genes
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(1) Objective: ST11 carbapenem-resistant Klebsiella pneumoniae (CRKP) is widespread throughout the world, and the mechanisms for the transmission and evolution of major serotypes, ST11-KL47 and ST11-KL64, were analyzed to investigate the global distribution and evolutionary characteristics of ST11 CRKP; (2) Methods: The Pathosystems Resource Integration Center (PATRIC) database was downloaded and all K. pneumoniae from 2011 to 2020 were screened to obtain ST11 CRKP genome assemblies with basic
doi:10.3390/genes13091624
pmid:36140792
pmcid:PMC9498433
fatcat:taiehtsbyve77cbuux5gfwajhy
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... nformation. The relationship of serotype evolution between KL47 and KL64 was then investigated using statistical and bioinformatic analysis; (3) Results: In total, 386 ST11 CRKP isolates were included for analysis. Blood (31.09%, 120/386), respiratory tract (23.06%, 89/386), and feces (20.21%, 78/386) were the major sources of samples. China was the leading country where ST11 CRKP was isolated. KL47 and KL64 were found to be the most prevalent serotypes. ST11-KL64 CRKP [median 78(P25-P75: 72~79.25)] had remarkably more virulence genes than the KL47 [median 63(P25~P75: 63~69)], and the distinction was statistically significant (p < 0.001). A differential comparison of virulence genes between KL47 and KL64 revealed 35 differential virulence genes, including rmpA/rmpA2, iucABCD, iutA, etc. The comparison of the recombination of serotype-determining regions between the two serotypes revealed that KL64 CRKP carried more nucleotide sequences in the CD1-VR2-CD2 region than KL47 CRKP. More nucleotide sequences added approximately 303 base pairs (bp) with higher GC content (58.14%), which might facilitate the evolution of the serotype toward KL64; (4) Conclusions: KL47 and KL64 have become the predominant serotypes of ST11 CRKP. KL64 CRKP carries more virulence genes than KL47 and has increased by approximately 303 bp through recombinant mutations, thus facilitating the evolution of KL47 to KL64. Stricter infection prevention and control measures should be developed to deal with the epidemic transmission of ST11-KL64 CRKP.
An Intelligent Epileptic Prediction System Based on Synchrosqueezed Wavelet Transform and Multi-Level Feature CNN for Smart Healthcare IoT
2022
Sensors
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Epilepsy is a common neurological disease worldwide, characterized by recurrent seizures. There is currently no cure for epilepsy. However, seizures can be controlled by drugs and surgeries in about 70% of epileptic patients. A timely and accurate prediction of seizures can prevent injuries during seizures and improve the patients' quality of life. In this paper, we proposed an intelligent epileptic prediction system based on Synchrosqueezed Wavelet Transform (SWT) and Multi-Level Feature
doi:10.3390/s22176458
pmid:36080916
pmcid:PMC9460721
fatcat:znpsa4vp3jgk5gmqaymsnr5dna
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... utional Neural Network (MLF-CNN) for smart healthcare IoT network. In this system, we used SWT to map EEG signals to the frequency domain, which was able to measure the energy changes in EEG signals caused by seizures within a well-defined Time-Frequency (TF) plane. MLF-CNN was then applied to extract multi-level features from the processed EEG signals and classify the different seizure segments. The performance of our proposed system was evaluated with the publicly available CHB-MIT dataset and our private ZJU4H dataset. The system achieved an accuracy of 96.99% and 94.25%, a sensitivity of 96.48% and 97.76%, a specificity of 97.46% and 94.07% and a false prediction rate (FPR/h) of 0.031 and 0.049 FPR/h on the CHB-MIT dataset and the ZJU4H dataset, respectively.
The beginning and the end: flanking nucleotides induce a parallel G-quadruplex topology
2021
Nucleic Acids Research
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Genomic sequences susceptible to form G-quadruplexes (G4s) are always flanked by other nucleotides, but G4 formation in vitro is generally studied with short synthetic DNA or RNA oligonucleotides, for which bases adjacent to the G4 core are often omitted. Herein, we systematically studied the effects of flanking nucleotides on structural polymorphism of 371 different oligodeoxynucleotides that adopt intramolecular G4 structures. We found out that the addition of nucleotides favors the formation
doi:10.1093/nar/gkab681
pmid:34379785
fatcat:nyvlixfxvvgudlplx5rniidnue
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... of a parallel fold, defined as the 'flanking effect' in this work. This 'flanking effect' was more pronounced when nucleotides were added at the 5′-end, and depended on loop arrangement. NMR experiments and molecular dynamics simulations revealed that flanking sequences at the 5′-end abolish a strong syn-specific hydrogen bond commonly found in non-parallel conformations, thus favoring a parallel topology. These analyses pave a new way for more accurate prediction of DNA G4 folding in a physiological context.
Research on D2D Communication
2015
Proceedings of the 2015 International Symposium on Computers and Informatics
unpublished
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The significant development in mobile internet greatly enrich our daily life, meanwhile it challenges the capacity of the current cellular networks. The limited frequency resources are the main bottleneck of the development of cellular networks. Device-to-device(D2D) communication is a new technology that allows mobile terminals to directly communicate with each other by sharing the resources of cells under the control of cellular systems. D2D communication is introduced into cellular networks
doi:10.2991/isci-15.2015.332
fatcat:fnp3prqmpfakvajkighog5mjjq
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... o improve resource utilization efficiency and increase system throughput. However, it also gives rise to many new challenges. We first introduce the system model and operating principle of D2D communication. Next a survey is made on the recent researches aiming to achieve D2D communication in cellular networks, including session set up, resource optimization, and application.
Ganglioside GM3 Protects Against Abdominal Aortic Aneurysm by Suppressing Ferroptosis in Vascular Smooth Muscle Cells
2023
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Abdominal aortic aneurysm (AAA) is a potentially life-threatening vascular condition, but approved medical therapies to prevent AAA progression and rupture are currently lacking. Sphingolipid metabolism disorders are associated with the occurrence and development of AAA. It has been discovered that ganglioside GM3, a sialic acid-containing type of glycosphingolipid, plays a protective role in atherosclerosis, which is an important risk factor for AAA; however, the potential contribution of GM3
doi:10.1161/circulationaha.123.066110
pmid:38018467
fatcat:3ikgjbzxwvefvbqzkndojx546i
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... o AAA development has not been investigated. We performed a metabolomics study to evaluated GM3 level in plasma of human patients with AAA. We profiled GM3 synthase (ST3GAL5) expression in the mouse model of aneurysm and human AAA tissues through Western blotting and immunofluorescence staining. RNA sequencing, affinity purification and mass spectrometry, proteomic analysis, surface plasmon resonance analysis, and functional studies were used to dissect the molecular mechanism of GM3-regulating ferroptosis. We conditionally deleted and overexpressed St3gal5 in smooth muscle cells (SMCs) in vivo to investigate its role in AAA. We found significantly reduced plasma levels of GM3 in human patients with AAA. GM3 content and ST3GAL5 expression were decreased in abdominal aortic vascular SMCs in patients with AAA and an AAA mouse model. RNA sequencing analysis showed that ST3GAL5 silencing in human aortic SMCs induced ferroptosis. We showed that GM3 interacted directly with the extracellular domain of TFR1 (transferrin receptor 1), a cell membrane protein critical for cellular iron uptake, and disrupted its interaction with holo-transferrin. SMC-specific St3gal5 knockout exacerbated iron accumulation at lesion sites and significantly promoted AAA development in mice, whereas GM3 supplementation suppressed lipid peroxidation, reduced iron deposition in aortic vascular SMCs, and markedly decreased AAA incidence. Together, these results suggest that GM3 dysregulation promotes ferroptosis of vascular SMCs in AAA. Furthermore, GM3 may constitute a new therapeutic target for AAA.
Research and Practice of Teaching Analog Circuit for Foreign Students
2017
Proceedings of the 2017 3rd Conference on Education and Teaching in Colleges and Universities (CETCU 2017)
unpublished
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Along with the expansion of international higher education in China, the English teaching for foreign students has become the important way for foreign students education. This paper introduces teaching practices of Analog Circuit with English for foreign students, and discusses the teaching methods, the teachers' team building and the evaluation of teaching.Teaching practice shows that the learning interest of students and the teaching effects are improved greatly after the teaching reform.
doi:10.2991/cetcu-17.2017.38
fatcat:77clg4c3bjdyvnjy3sc7czyy6q
PAPR Reduction of OFDM Signal for Visible Light Communication by Using Hartley Transform and Companding Techniques
2016
Proceedings of the 2015 4th National Conference on Electrical, Electronics and Computer Engineering
unpublished
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OFDM Visible light communication (VLC) systems can achieve both illumination and data transmission simultaneously via light emitting diodes (LEDs). Orthogonal frequency-division multiplexing (OFDM) has been considered as a promising multi-carrier modulation technique for VLC due to its ability to boost data rates and efficiently combat inter-symbol-interference (ISI). However, the peak-to-average power ratio (PAPR) is the main problem of the OFDM-based VLC system. In this paper, a combined
doi:10.2991/nceece-15.2016.151
fatcat:76z4mb5btndknkly3a5pmovjku
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... ete Hartley transform (DHT) precoding and companding transform scheme is proposed to reduce the PAPR of OFDM-based VLC systems. The performance of the proposed PAPR reduction scheme is studied via simulation. Simulation results show that the proposed scheme may obtain significant PAPR reduction compared to the previously proposed DHT spread (DHTS) and conventional companding transform (CT) in terms of PAPR reduction capability. The bit error rate (BER) performance of the OFDM-based VLC system with combined DHT precoding and companding is also evaluated over an indoor dispersive VLC channel model. The simulation shows that the BER of the proposed scheme outperforms that of the companding scheme used alone.
Page 1920 of Das Kunstwerk Vol. 39, Issue 6
[page]
1986
Das Kunstwerk
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Die physiologischen Bedingungen gar des Ausdrucks, der Emp- fängnis, der Vermittlung hat nur das 19. Jahrhundert über- schätzen können. ...
a-capella-Vortrag des Palestri- nastils und dann im höchsten Maße in den Passionen von Heinrich Schütz, den Fugen Bachs, den letzten Quartetten Beethovens und dem Tristan erleben wir hinter dem sinnli- chen ...
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