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- 摘要
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- 实验方案
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - PV Plant Performance Loss Rate Assessment: Significance of Data Filtering and Aggregation
摘要： Predicting the performance of parallel scienti?c applications is becoming increasingly complex. Our goal was to characterize the behavior of message-passing applications on different target machines. To achieve this goal, we developed a method called parallel application signature for performance prediction (PAS2P), which strives to describe an application based on its behavior. Based on the application’s message-passing activity, we identi?ed and extracted representative phases, with which we created a parallel application signature that enabled us to predict the application’s performance. We experimented with using different scienti?c applications on different clusters. We were able to predict execution times with an average accuracy greater than 97 percent.
关键词： performance prediction,application signature,Parallel application
更新于2025-09-23 15:21:01
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[IEEE 2019 International Conference on Computer, Communication, Chemical, Materials and Electronic Engineering (IC4ME2) - Rajshahi, Bangladesh (2019.7.11-2019.7.12)] 2019 International Conference on Computer, Communication, Chemical, Materials and Electronic Engineering (IC4ME2) - State Modeling to Investigate the CW Pumping Behaviour of Organic Solid-State Lasers
摘要： Molecular communication is an emerging communication paradigm for biological nanomachines. It allows biological nanomachines to communicate through exchanging molecules in an aqueous environment and to perform collaborative tasks through integrating functionalities of individual biological nanomachines. This paper develops the layered architecture of molecular communication and describes research issues that molecular communication faces at each layer of the architecture. Specifically, this paper applies a layered architecture approach, traditionally used in communication networks, to molecular communication, decomposes complex molecular communication functionality into a set of manageable layers, identifies basic functionalities of each layer, and develops a descriptive model consisting of key components of the layer for each layer. This paper also discusses open research issues that need to be addressed at each layer. In addition, this paper provides an example design of targeted drug delivery, a nanomedical application, to illustrate how the layered architecture helps design an application of molecular communication. The primary contribution of this paper is to provide an in-depth architectural view of molecular communication. Establishing a layered architecture of molecular communication helps organize various research issues and design concerns into layers that are relatively independent of each other, and thus accelerates research in each layer and facilitates the design and development of applications of molecular communication.
关键词： layered network architecture,molecular communication,Biological nanomachine,nanomedical application
更新于2025-09-23 15:21:01
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High-selectivity bandpass filter using six pairs of quarter-wavelength coupled lines
摘要： We present a 16-channel readout integrated circuit (ROIC) with nanosecond-resolution time to digital converter (TDC) for pixelated Cadmium Telluride (CdTe) gamma-ray detectors. The pixel array ROIC is the proof of concept of the pixel array readout ASIC for positron-emission tomography (PET) scanner, positron-emission mammography (PEM) scanner, and Compton gamma camera. The electronics of each individual pixel integrates an analog front-end with switchable gain, an analog to digital converter (ADC), configuration registers, and a 4-state digital controller. For every detected photon, the pixel electronics provides the energy deposited in the detector with 10-bit resolution, and a fast trigger signal for time stamp. The ASIC contains the 16-pixel matrix electronics, a digital controller, five global voltage references, a TDC, a temperature sensor, and a band-gap based current reference. The ASIC has been fabricated with TSMC m mixed-signal CMOS technology and occupies an area of mm. The TDC shows a resolution mm of 95.5 ps, a precision of 600 ps at full width half maximum W. In acquisition (FWHM), and a power consumption of mode, the total power consumption of every pixel is W. An equivalent noise charge (ENC) of at maximum gain and negative polarity conditions has been measured at room temperature.
关键词： positron emission tomography,low-power electronics,semiconductor radiation detectors,application specific integrated circuits,gamma-ray detectors,Analog-digital conversion,energy resolution
更新于2025-09-23 15:21:01
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Doped Layer Characterization Using Accurate Optical Modelling of Mid-Infrared Spectrometry
摘要： We present a 16-channel readout integrated circuit (ROIC) with nanosecond-resolution time to digital converter (TDC) for pixelated Cadmium Telluride (CdTe) gamma-ray detectors. The pixel array ROIC is the proof of concept of the pixel array readout ASIC for positron-emission tomography (PET) scanner, positron-emission mammography (PEM) scanner, and Compton gamma camera. The electronics of each individual pixel integrates an analog front-end with switchable gain, an analog to digital converter (ADC), con?guration registers, and a 4-state digital controller. For every detected photon, the pixel electronics provides the energy deposited in the detector with 10-bit resolution, and a fast trigger signal for time stamp. The ASIC contains the 16-pixel matrix electronics, a digital controller, ?ve global voltage references, a TDC, a temperature sensor, and a band-gap based current reference. The ASIC has been fabricated with TSMC m mixed-signal CMOS technology and occupies an area of mm. The TDC shows a resolution mm of 95.5 ps, a precision of 600 ps at full width half maximum W. In acquisition (FWHM), and a power consumption of mode, the total power consumption of every pixel is W. An equivalent noise charge (ENC) of at maximum gain and negative polarity conditions has been measured at room temperature.
关键词： positron emission tomography,low-power electronics,application speci?c integrated circuits,semiconductor radiation detectors,gamma-ray detectors,Analog-digital conversion,energy resolution
更新于2025-09-23 15:21:01
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A COMPACT CPW FED CRR LOADED FOUR ELEMENT METAMATERIAL ARRAY ANTENNA FOR WIRELESS APPLICATION
摘要： A compact coplanar waveguide (CPW) fed close ring resonator (CRR) loaded four-element metamaterial (MTM) array antenna for wireless application is designed and discussed in this article. The array is designed with corporate feeding network, arranged in a manner to offer 3 dB power at its each element. The proposed 1 × 4 MTM array antenna offers a fractional bandwidth of 10.18% with respect to the resonance frequency of fr = 2:26 GHz. At the resonance frequency of 2.26 GHz, the proposed 1 × 4 MTM array antenna offers a gain of 5.10 dBi in the direction of broadside radiation. Each element of the proposed array antenna consists of CRR, which removes the requirement of via and allows the design of a uniplanar MTM array. The overall electrical size of the single element antenna shows compactness of 0:255λ0 ×0:155λ0 ×0:012λ0, where λ0 is the free space wavelength at its resonance frequency of fr = 2:3 GHz. The proposed MTM array antenna is designed and simulated on ANSYS HFSS 14.0, and simulated results are verified with the fabricated proto-type.
关键词： wireless application,metamaterial,compact,CRR loaded,CPW fed,array antenna
更新于2025-09-23 15:21:01
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ON THE COOPERATIVITY EFFECT IN WATSON&CRICK AND WOBBLE PAIRS FOR A HALOURACIL SERIES AND ITS POTENTIAL QUANTITATIVE APPLICATION STUDIED THROUGH SERS
摘要： The nature of the cooperativity effect of hydrogen bonds in Watson & Crick and wobble base pairs formed with thymine, uracil and its 5-halogenated derivatives (5-fluoro, -chloro and -bromouracil) have been studied through SERS, and using chemometric tools to process data and extract relevant information. Remarkable differences between the two kinds of pairs were clearly observed and the behavior correlated to the withdrawing character of different substituents at the 5- position of uracil was verified. Multivariate analyses have also unveiled information about pair’s stability and a stronger cooperativity effect seems to rule the Watson & Crick pairs when compared to wobble pairs. Defined patterns in the behavior of Watson & Crick pairs allowed the design of an indirect methodology for quantifying 5-bromouracil using a PLS method with variable selection. LOD values of 0.037 and 0.112 mmol L-1 in absence and presence of structurally similar interferences were reached, while its direct SERS quantification is only possible at around 45 mmol L-1.
关键词： SERS,5-halogenated derivatives,Watson & Crick pairs,wobble pairs,multivariate analyses,quantitative application,chemometric tools,cooperativity effect,hydrogen bonds
更新于2025-09-23 15:21:01
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Protective effect of RIPK1-inhibitory compound in in vivo models for retinal degenerative disease
摘要： Receptor interacting protein kinase 1 (RIPK1) plays a key role in necroptosis, which is a type of programmed necrosis that is involved in ocular diseases, including glaucoma and dry age-related macular degeneration (AMD). We previously introduced RIPK1-inhibitory compound (RIC), which has biochemical characteristics and a mode of action that are distinct from those of the prototype RIPK1 inhibitor necrostatin-1. The intraperitoneal administration of RIC exerts a protective effect on retinal ganglion cells against a glaucomatous insult. In this study, we examined the protective effect of RIC on retinal pigment epithelium (RPE) against sodium iodate (SI) insult, which is associated with dry AMD pathogenesis. The eye drop administration of RIC that reached on the retina prevented RPE loss in SI-induced retinal degeneration. RIC consistently demonstrated retinal protection in the funduscopy and electroretinogram analyses in SI-injected rabbits and iodoacetic acid-treated mini-pigs. Moreover, the in vivo protective effects of RIC were superior to those of ACU-4429 and doxycycline, which are other medications investigated in clinical trials for the treatment of dry AMD, and RIC did not induce retinal toxicity following topical administration in rats. Collectively, RIC displayed excellent retinal penetration and prevented retinal degeneration in the pathogenesis of dry AMD with a high in vivo efficacy.
关键词： RPE protection,Receptor interacting protein kinase1 (RIPK1),Dry AMD,Topical application,Retinal degeneration,RIPK1-inhibitory compound (RIC)
更新于2025-09-23 15:21:01
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A novel star shape photonic crystal fiber for low loss terahertz pulse propagation
摘要： An extremely low loss circle-based star shape photonic crystal fiber (CS-PCF) has been proposed for terahertz (THz) spectrum. A dielectric material TOPAS has been used for constructing the proposed model. Some important parameters for the proposed waveguide have been investigated a wide THz spectrum ranging from 0.5 to 2.50 THz. The simulation result exhibits an extremely-low material loss of 0.01607 cm-1 and a large effective area of 1.386 × 106 μm2 at 1.0 THz frequency with 55% core porosity. In addition, the proposed structure establishes comparatively higher core power fraction maintaining lower scattering loss about 1.235 × 10-15 dB/cm and 91.97% of bulk absorption material loss at the same operating frequency. From the above results, it is anticipated that proposed CS-PCF model of the THz waveguide will make the conventional communication very effective over the current designs.
关键词： Effective material Loss,Scattering Loss,Power Fraction,THz Application,Single Mode Fiber
更新于2025-09-23 15:21:01
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Large-scale preparation of rice-husk-derived mesoporous SiO2@TiO2 as efficient and promising photocatalysts for organic contaminants degradation
摘要： Mesoporous SiO2@TiO2 photocatalysts with application prospect for organic contaminants degradation were prepared by utilizing rice husk (RH), an easy-available bioresource, as the biotemplate. Structures and physicochemical properties of RH-derived SiO2@TiO2 photocatalysts were systematically characterized and discussed. Results indicate the RH-derived mesoporous and thermal-stable template, which can postpone the anatase-rutile phase transition of TiO2 at high temperatures, is mainly consisted of tightly compacted amorphous SiO2 nanoparticles. Optimized calcination temperature of 700 °C is positive for preparing the most active RH-derived SiO2@TiO2, which has the anatase phase, mesoporous structure, proper crystalline degree (grain size of 22.75 nm), specific surface area of 41.13 m2/g, and high ability in separating the photogenerated electron-hole pairs, for removal of Rhodamine B (RhB) in aqueous solutions under both the xenon lamp and visible light irradiation. Moreover, large-scale preparation, stable, and recyclable properties of the photocatalysts are also confirmed, which makes them as promising photocatalysts for practical application.
关键词： SiO2@TiO2 mesoporous structure,Biotemplate,Rice husk,Photocatalysis,Practical application
更新于2025-09-23 15:21:01
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[IEEE 2019 International Topical Meeting on Microwave Photonics (MWP) - Ottawa, ON, Canada (2019.10.7-2019.10.10)] 2019 International Topical Meeting on Microwave Photonics (MWP) - MWP 2019 Technical Prgoram Committee
摘要： This paper investigates the system performance evaluation framework of systematic rateless-coded (SRCed) transmissions for user experience in future 5G systems. To this end, we define the application-layer information loss ratio (AILR), i.e., the ratio of the number of unsuccessfully decoded messages to that of the total transmitted messages, as a system performance index from the perspective over network application layer, which can be used as an evaluation framework on the users’ experience in the viewpoint of 5G transmission systems. By using the integer partition theory, we analytically derive some theoretical results and then obtain an exact expression of the AILR for SRCed transmissions. Simulation and numerical results are provided to demonstrate the validness of our analytical results, which also show that the SRCed transmission achieves much better system performance than existing coded transmission methods in terms of AILR. Moreover, by using our presented AILR expression, the proper system configuration can be easily determined without a heavy burden of Monte Carlo simulations. It also illustrates some inherent relationships between system parameters by using SRCed transmission on application layer, which can be easily carried out to achieve a better performance in the viewpoint of users’ experiences. First, for a given channel condition, the larger the message length is, the smaller the ratio of the message length to the source symbol length should be selected. Second, for a given message length, the better the channel condition is, the larger the ratio of the message length to the source symbol length should be selected.
关键词： user experience,systematic rateless-coded transmissions,application-layer performance,application-layer information loss ratio.,fountain codes,Rateless codes
更新于2025-09-23 15:19:57