In this article, we report the preparation of a three-dimensional（3D） interconnected mesoporous anatase TiO2-SiO2 nanocomposite. The nanocomposite was obtained by using an ordered two-dimensional（2D） hexagonal mes...In this article, we report the preparation of a three-dimensional（3D） interconnected mesoporous anatase TiO2-SiO2 nanocomposite. The nanocomposite was obtained by using an ordered two-dimensional（2D） hexagonal mesoporous anatase 70 TiO2-30 SiO2-950 nanocomposite（crystallized at 950 °C for 2 h） as a precursor, NaO H as an etchant of SiO2 via a ＂creating mesopores in the pore walls＂ approach. Our strategy adopts mild conditions of creating pores such as diluted NaO H solution, appropriate temperature and solid/liquid ratio, etc. aiming at ensuring the integrities of mesopores architecture and anatase nanocrystals. XRD, TEM and N2 sorption techniques have been used to systematically investigate the physico-chemical properties of the nanocomposites. The results show that the intrawall mesopores are highly dense and uniform（average pore size 3.6 nm）, and highly link the initial mesochannels in a 3D manner while retaining mesostructural integrity. There is no significant change to either crystallinity or size of the anatase nanocrystals before and after creating the intrawall mesopores. The photocatalytic degradation rates of rhodamine B（RhB, 0.303 min^–1） and methylene blue（MB, 0.757 min^–1） dyes on the resultant nanocomposite are very high, which are 5.1 and 5.3 times that of the precursor; even up to 16.5 and 24.1 times that of Degussa P25 photocatalyst, respectively. These results clearly demonstrate that the 3D interconnected mesopores structure plays an overwhelming role to the increments of activities. The 3D mesoporous anatase TiO2-SiO2 nanocomposite exhibits unexpected-high degradation activities to RhB and MB in the mesoporous metal oxide-based materials reported so far. Additionally, the nanocomposite is considerably stable and reusable. We believe that this method would pave the way for the preparation of other 3D highly interconnected mesoporous metal oxide-based materials with ultra-high performance.展开更多
With the introduction of software defined hardware by DARPA Electronics Resurgence Initiative,software definition will be the basic attribute of information system.Benefiting from boundary certainty and algorithm aggr...With the introduction of software defined hardware by DARPA Electronics Resurgence Initiative,software definition will be the basic attribute of information system.Benefiting from boundary certainty and algorithm aggregation of domain applications,domain-oriented computing architecture has become the technical direction that considers the high flexibility and efficiency of information system.Aiming at the characteristics of data-intensive computing in different scenarios such as Internet of Things(IoT),big data,artificial intelligence(AI),this paper presents a domain-oriented software defined computing architecture,discusses the hierarchical interconnection structure,hybrid granularity computing element and its computational kernel extraction method,finally proves the flexibility and high efficiency of this architecture by experimental comparison.展开更多
This paper presents introduction for a QoS verification of on-chip interconnection based on the new progress of the industry, which combined with an AMD processor chip design for big data. Some verification experience...This paper presents introduction for a QoS verification of on-chip interconnection based on the new progress of the industry, which combined with an AMD processor chip design for big data. Some verification experience in architectural modeling and simulation of on-chip interconnection is also introduced in this paper.展开更多
In view of the lack of research on the information model of tufting carpet machine in China,an information modeling method based on Object Linking and Embedding for Process Control Unified Architecture(OPC UA)framewor...In view of the lack of research on the information model of tufting carpet machine in China,an information modeling method based on Object Linking and Embedding for Process Control Unified Architecture(OPC UA)framework was proposed to solve the problem of“information island”caused by the differentiated data interface between heterogeneous equipment and system in tufting carpet machine workshop.This paper established an information model of tufting carpet machine based on analyzing the system architecture,workshop equipment composition and information flow of the workshop,combined with the OPC UA information modeling specification.Subsequently,the OPC UA protocol is used to instantiate and map the information model,and the OPC UA server is developed.Finally,the practicability of tufting carpet machine information model under the OPC UA framework and the feasibility of realizing the information interconnection of heterogeneous devices in the tufting carpet machine digital workshop are verified.On this basis,the cloud and remote access to the underlying device data are realized.The application of this information model and information integration scheme in actual production explores and practices the application of OPC UA technology in the digital workshop of tufting carpet machine.展开更多
Background: Aged skin exhibits visual alterations such as wrinkles, rough texture, pore dilation, and dull skin tone, as well as physiological aging, namely, decreased hydration and increased transepidermal water loss...Background: Aged skin exhibits visual alterations such as wrinkles, rough texture, pore dilation, and dull skin tone, as well as physiological aging, namely, decreased hydration and increased transepidermal water loss (TEWL). Recent advances in coherence tomography have also revealed that skin aging affects in vivo epidermal keratinocyte architecture. However, the interconnectivity between spatial architectural aging and visual/physiological aging parameters remains largely unknown. Purpose: To elucidate whether the tomographic keratinocyte architectural aging is correlated with visual and physiological skin aging parameters and to quantitatively evaluate the improvements of the architectural, visual, and physiological aging parameters by the daily treatment of the skin care formula containing Galactomyces Ferment Filtrate (GFF, 8X Pitera<sup>TM</sup>). Method: We measured the in vivo keratinocyte cellular architecture with two-photon stereoscopic tomography obtaining by-layer epidermal section images in 78 Asian females of various ages. Visual aging parameters were analyzed using a portable image capture system. Hydration and TEWL were also assessed. The anti-aging effects of GFF-containing skin moisturizer (SK-II LXP Cream<sup>TM</sup>) were also examined in two studies after twice-daily application for 2 (N = 35) and 4 (N = 32) weeks. Results: As for the keratinocyte cellular architecture, skin aging was significantly associated with decreased cell density and increased cell uniformity. These architectural aging parameters were significantly correlated with visual and physiological aging parameters, namely, rough texture, wrinkles, pore dilation, dull skin tone, dehydration, and increased TEWL. The strong interconnectivity allowed us to develop formulae to estimate the keratinocyte architecture from visual aging parameters. Moreover, twice-daily application of SK-II significantly improved the keratinocyte architecture associated with multiple skin aging visual and physiological parameters. Conclusion: Skin aging is a process involving mutual interconnections among epidermal keratinocyte cellular architecture, visual, and physiological parameters. The GFF-containing moisturizer SK-II effectively improves spatial architecture of keratinocytes in epidermis and these evaluated skin aging parameters in a new trajectory over the course of treatment. .展开更多
To address the issues of head-of-line(HOL)blocking at the virtual output queue(VOQ)level,packet loss,and congestion spreading caused by buffer overflow in the shared-buffer-based combined input and output queued(CIOQ)...To address the issues of head-of-line(HOL)blocking at the virtual output queue(VOQ)level,packet loss,and congestion spreading caused by buffer overflow in the shared-buffer-based combined input and output queued(CIOQ)switching architecture,while enhancing its performance and stability,we propose a de-blocking adaptive feedback control(AFC)design in this study.The introduction of the credit timeout detection mechanism(CTDM)enables the CIOQ to achieve theoretical 100%non-blocking state,effectively eliminating the impact of HOL blocking.With the combined effect of the proposed VOQ dynamic regulation algorithm(VDRA)and threshold dynamic adaptive algorithm(TDAA),it can reduce the risk of congestion spreading caused by buffer overflow and consequently improve the overall performance of the system.Both theoretical analysis and experimental results demonstrate that,under typical traffic conditions,the proposed design achieves a maximum throughput of 1499.66 Gb/s and a minimum latency of 83 ns.Additionally,the effective throughput ratio reaches 96.94%,with a data link layer packet(DLLP)loss ratio of merely 0.61%and a packet loss rate as low as 0.6%.In comparison with traditional CIOQ and input queued(IQ)switch architectures,the proposed design demonstrates improvements in throughput by 15.12%and 20.55%,and forwarding latency is reduced by 26.9%and 54.7%,respectively,and the system stability is stronger,which can fully satisfy the demand for data exchange in complex situations.展开更多
构建数据中心加速服务的软硬件系统级原型平台,需要考虑高计算能力、扩展性、灵活性和低成本等因素.为了提高数据中心的能力,从软硬件协同的角度研究数据中心异构计算在云平台架构、硬件实现、高速互连和应用等方面的创新,研究设计并构...构建数据中心加速服务的软硬件系统级原型平台,需要考虑高计算能力、扩展性、灵活性和低成本等因素.为了提高数据中心的能力,从软硬件协同的角度研究数据中心异构计算在云平台架构、硬件实现、高速互连和应用等方面的创新,研究设计并构建了一个可重构组合的软硬件加速原型系统,简化了现有以处理器为中心的系统级计算平台构建方法,实现目标软硬件设计的快速部署与系统级原型验证.针对以上目标,通过解耦的可重构架构设备虚拟化和远程映射等方法,发掘独立计算单元的潜力,构建了一套ISOF(independent system of FPGA(field programmable gate arrays))软硬件计算平台系统,可使其超越普通服务器设计所能提供的能力,实现计算单元低成本高效扩展,使客户端可灵活使用外设资源,并且为满足系统级通信挑战,设计了一套计算单元之间的通信硬件平台和交互机制.此外,为提升软硬件系统级平台的敏捷性,ISOF提供了灵活统一的调用接口.最后,通过对平台目标系统级的分析评估,验证了该平台在满足了当下计算与加速需求下,保证了高速、低延时的通信,以及良好的吞吐率和弹性扩容效率,另外在高速通信的基础上改进的拥塞避免和丢包恢复机制,满足了数据中心规模通信的稳定性需求.展开更多
基金supported by the National Natural Science Foundation of China(21373056)the Science and Technology Commission of Shanghai Municipality(13DZ2275200)~~
文摘In this article, we report the preparation of a three-dimensional（3D） interconnected mesoporous anatase TiO2-SiO2 nanocomposite. The nanocomposite was obtained by using an ordered two-dimensional（2D） hexagonal mesoporous anatase 70 TiO2-30 SiO2-950 nanocomposite（crystallized at 950 °C for 2 h） as a precursor, NaO H as an etchant of SiO2 via a ＂creating mesopores in the pore walls＂ approach. Our strategy adopts mild conditions of creating pores such as diluted NaO H solution, appropriate temperature and solid/liquid ratio, etc. aiming at ensuring the integrities of mesopores architecture and anatase nanocrystals. XRD, TEM and N2 sorption techniques have been used to systematically investigate the physico-chemical properties of the nanocomposites. The results show that the intrawall mesopores are highly dense and uniform（average pore size 3.6 nm）, and highly link the initial mesochannels in a 3D manner while retaining mesostructural integrity. There is no significant change to either crystallinity or size of the anatase nanocrystals before and after creating the intrawall mesopores. The photocatalytic degradation rates of rhodamine B（RhB, 0.303 min^–1） and methylene blue（MB, 0.757 min^–1） dyes on the resultant nanocomposite are very high, which are 5.1 and 5.3 times that of the precursor; even up to 16.5 and 24.1 times that of Degussa P25 photocatalyst, respectively. These results clearly demonstrate that the 3D interconnected mesopores structure plays an overwhelming role to the increments of activities. The 3D mesoporous anatase TiO2-SiO2 nanocomposite exhibits unexpected-high degradation activities to RhB and MB in the mesoporous metal oxide-based materials reported so far. Additionally, the nanocomposite is considerably stable and reusable. We believe that this method would pave the way for the preparation of other 3D highly interconnected mesoporous metal oxide-based materials with ultra-high performance.
基金supported by National Science and Technology Major Project granted No.2016ZX01012101
文摘With the introduction of software defined hardware by DARPA Electronics Resurgence Initiative,software definition will be the basic attribute of information system.Benefiting from boundary certainty and algorithm aggregation of domain applications,domain-oriented computing architecture has become the technical direction that considers the high flexibility and efficiency of information system.Aiming at the characteristics of data-intensive computing in different scenarios such as Internet of Things(IoT),big data,artificial intelligence(AI),this paper presents a domain-oriented software defined computing architecture,discusses the hierarchical interconnection structure,hybrid granularity computing element and its computational kernel extraction method,finally proves the flexibility and high efficiency of this architecture by experimental comparison.
文摘This paper presents introduction for a QoS verification of on-chip interconnection based on the new progress of the industry, which combined with an AMD processor chip design for big data. Some verification experience in architectural modeling and simulation of on-chip interconnection is also introduced in this paper.
文摘In view of the lack of research on the information model of tufting carpet machine in China,an information modeling method based on Object Linking and Embedding for Process Control Unified Architecture(OPC UA)framework was proposed to solve the problem of“information island”caused by the differentiated data interface between heterogeneous equipment and system in tufting carpet machine workshop.This paper established an information model of tufting carpet machine based on analyzing the system architecture,workshop equipment composition and information flow of the workshop,combined with the OPC UA information modeling specification.Subsequently,the OPC UA protocol is used to instantiate and map the information model,and the OPC UA server is developed.Finally,the practicability of tufting carpet machine information model under the OPC UA framework and the feasibility of realizing the information interconnection of heterogeneous devices in the tufting carpet machine digital workshop are verified.On this basis,the cloud and remote access to the underlying device data are realized.The application of this information model and information integration scheme in actual production explores and practices the application of OPC UA technology in the digital workshop of tufting carpet machine.
文摘Background: Aged skin exhibits visual alterations such as wrinkles, rough texture, pore dilation, and dull skin tone, as well as physiological aging, namely, decreased hydration and increased transepidermal water loss (TEWL). Recent advances in coherence tomography have also revealed that skin aging affects in vivo epidermal keratinocyte architecture. However, the interconnectivity between spatial architectural aging and visual/physiological aging parameters remains largely unknown. Purpose: To elucidate whether the tomographic keratinocyte architectural aging is correlated with visual and physiological skin aging parameters and to quantitatively evaluate the improvements of the architectural, visual, and physiological aging parameters by the daily treatment of the skin care formula containing Galactomyces Ferment Filtrate (GFF, 8X Pitera<sup>TM</sup>). Method: We measured the in vivo keratinocyte cellular architecture with two-photon stereoscopic tomography obtaining by-layer epidermal section images in 78 Asian females of various ages. Visual aging parameters were analyzed using a portable image capture system. Hydration and TEWL were also assessed. The anti-aging effects of GFF-containing skin moisturizer (SK-II LXP Cream<sup>TM</sup>) were also examined in two studies after twice-daily application for 2 (N = 35) and 4 (N = 32) weeks. Results: As for the keratinocyte cellular architecture, skin aging was significantly associated with decreased cell density and increased cell uniformity. These architectural aging parameters were significantly correlated with visual and physiological aging parameters, namely, rough texture, wrinkles, pore dilation, dull skin tone, dehydration, and increased TEWL. The strong interconnectivity allowed us to develop formulae to estimate the keratinocyte architecture from visual aging parameters. Moreover, twice-daily application of SK-II significantly improved the keratinocyte architecture associated with multiple skin aging visual and physiological parameters. Conclusion: Skin aging is a process involving mutual interconnections among epidermal keratinocyte cellular architecture, visual, and physiological parameters. The GFF-containing moisturizer SK-II effectively improves spatial architecture of keratinocytes in epidermis and these evaluated skin aging parameters in a new trajectory over the course of treatment. .
基金supported by the National Key Research and Development Program of China(No.2022YFB4500900).
文摘To address the issues of head-of-line(HOL)blocking at the virtual output queue(VOQ)level,packet loss,and congestion spreading caused by buffer overflow in the shared-buffer-based combined input and output queued(CIOQ)switching architecture,while enhancing its performance and stability,we propose a de-blocking adaptive feedback control(AFC)design in this study.The introduction of the credit timeout detection mechanism(CTDM)enables the CIOQ to achieve theoretical 100%non-blocking state,effectively eliminating the impact of HOL blocking.With the combined effect of the proposed VOQ dynamic regulation algorithm(VDRA)and threshold dynamic adaptive algorithm(TDAA),it can reduce the risk of congestion spreading caused by buffer overflow and consequently improve the overall performance of the system.Both theoretical analysis and experimental results demonstrate that,under typical traffic conditions,the proposed design achieves a maximum throughput of 1499.66 Gb/s and a minimum latency of 83 ns.Additionally,the effective throughput ratio reaches 96.94%,with a data link layer packet(DLLP)loss ratio of merely 0.61%and a packet loss rate as low as 0.6%.In comparison with traditional CIOQ and input queued(IQ)switch architectures,the proposed design demonstrates improvements in throughput by 15.12%and 20.55%,and forwarding latency is reduced by 26.9%and 54.7%,respectively,and the system stability is stronger,which can fully satisfy the demand for data exchange in complex situations.
文摘构建数据中心加速服务的软硬件系统级原型平台,需要考虑高计算能力、扩展性、灵活性和低成本等因素.为了提高数据中心的能力,从软硬件协同的角度研究数据中心异构计算在云平台架构、硬件实现、高速互连和应用等方面的创新,研究设计并构建了一个可重构组合的软硬件加速原型系统,简化了现有以处理器为中心的系统级计算平台构建方法,实现目标软硬件设计的快速部署与系统级原型验证.针对以上目标,通过解耦的可重构架构设备虚拟化和远程映射等方法,发掘独立计算单元的潜力,构建了一套ISOF(independent system of FPGA(field programmable gate arrays))软硬件计算平台系统,可使其超越普通服务器设计所能提供的能力,实现计算单元低成本高效扩展,使客户端可灵活使用外设资源,并且为满足系统级通信挑战,设计了一套计算单元之间的通信硬件平台和交互机制.此外,为提升软硬件系统级平台的敏捷性,ISOF提供了灵活统一的调用接口.最后,通过对平台目标系统级的分析评估,验证了该平台在满足了当下计算与加速需求下,保证了高速、低延时的通信,以及良好的吞吐率和弹性扩容效率,另外在高速通信的基础上改进的拥塞避免和丢包恢复机制,满足了数据中心规模通信的稳定性需求.
