Pub Date : 2015-11-05DOI: 10.1109/ITECHA.2015.7317442
Y. Tu, A. Ali, F. Elmegri, M. Abousitta, R. Abd‐Alhameed, A. Hussaini, I. Elfergani, J. Rodriguez, A. Atiah
A novel multi-standard dual-wide band filter with a compact size of only 8.8 mm by 16.8mm is designed and developed for transceiver devices. The proposed filter has a fundamental bandwidth of 1.6GHz with fractional bandwidth (FBW) of 29.7% centered at the 5.4GHz band, and second bandwidth of 300.0MHz with FBW of 3.6% centered at the 8.15GHz band. The basic dual-wide bandwidth is attributed to the interaction of the novel modified polygon pair and upper stub loaded stepped impedance resonator. Moreover, the added down stub loaded stepped impedance resonator (SLSIR) further enhances the pass band performance by widening the bandwidth and optimizing reflection coefficient performance considerably. To validate the proposed ideas, the multi-standard filter is designed and simulated by Ansoft HFSS software. The simulated results agree well with the theory predictions. The featured broad bandwidths over two frequency bands and the miniaturized size of the proposed filter make it very promising for applications in future multi-standard wireless communication.
设计并开发了一种新型的多标准双宽带滤波器，其紧凑尺寸仅为8.8 mm × 16.8mm。该滤波器基本带宽为1.6GHz，分频带宽(FBW)为29.7%，以5.4GHz为中心;第二带宽为300.0MHz, FBW为3.6%，以8.15GHz为中心。基本双宽带宽是由改进的多面体对与上部短段负载阶跃阻抗谐振器相互作用产生的。此外，增加的下短段负载阶跃阻抗谐振器(SLSIR)通过拓宽带宽和优化反射系数性能进一步提高了通带性能。为了验证所提出的思想，采用Ansoft HFSS软件对多标准滤波器进行了设计和仿真。模拟结果与理论预测吻合较好。该滤波器具有两个频段的宽频带和小型化的特点，在未来的多标准无线通信中具有广阔的应用前景。
{"title":"A novel multi-standard dual-wide band polygon SLSIR filter","authors":"Y. Tu, A. Ali, F. Elmegri, M. Abousitta, R. Abd‐Alhameed, A. Hussaini, I. Elfergani, J. Rodriguez, A. Atiah","doi":"10.1109/ITECHA.2015.7317442","DOIUrl":"https://doi.org/10.1109/ITECHA.2015.7317442","url":null,"abstract":"A novel multi-standard dual-wide band filter with a compact size of only 8.8 mm by 16.8mm is designed and developed for transceiver devices. The proposed filter has a fundamental bandwidth of 1.6GHz with fractional bandwidth (FBW) of 29.7% centered at the 5.4GHz band, and second bandwidth of 300.0MHz with FBW of 3.6% centered at the 8.15GHz band. The basic dual-wide bandwidth is attributed to the interaction of the novel modified polygon pair and upper stub loaded stepped impedance resonator. Moreover, the added down stub loaded stepped impedance resonator (SLSIR) further enhances the pass band performance by widening the bandwidth and optimizing reflection coefficient performance considerably. To validate the proposed ideas, the multi-standard filter is designed and simulated by Ansoft HFSS software. The simulated results agree well with the theory predictions. The featured broad bandwidths over two frequency bands and the miniaturized size of the proposed filter make it very promising for applications in future multi-standard wireless communication.","PeriodicalId":161782,"journal":{"name":"2015 Internet Technologies and Applications (ITA)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124059306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-11-05DOI: 10.1109/ITECHA.2015.7317365
A. Pereverzev, Yaan A. Prokofiev, D. Kaleev
The architecture of one-dimensional median filter was developed, which allows increasing the length of the aperture by adding modules of the single-type and calculating the median on each step of filter operation. Synthesizable Verilog-description of the proposed architecture was obtained.
{"title":"One-dimensional median filter with modular architecture hardware implementation","authors":"A. Pereverzev, Yaan A. Prokofiev, D. Kaleev","doi":"10.1109/ITECHA.2015.7317365","DOIUrl":"https://doi.org/10.1109/ITECHA.2015.7317365","url":null,"abstract":"The architecture of one-dimensional median filter was developed, which allows increasing the length of the aperture by adding modules of the single-type and calculating the median on each step of filter operation. Synthesizable Verilog-description of the proposed architecture was obtained.","PeriodicalId":161782,"journal":{"name":"2015 Internet Technologies and Applications (ITA)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128121297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-11-05DOI: 10.1109/ITECHA.2015.7317434
L. S. Yahya, Khalil H. Sayidmarie, F. Elmegri, R. Abd‐Alhameed
A double planar monopole antennas for WLAN and WiMAX application is proposed. Each antenna is represented in the form of crescent-shaped monopole structure. The lengths of the two arcs are designed to resonate at 2.45GHz, and 3.5GHz to meet the requirements for the WLAN and WiMAX standards respectively. The two monopoles have a small separation distance of 9mm (i.e., 0.0735λ0 at 2.45GHz). A new technique is proposed for the reduction of the mutual coupling between two closely-spaced antennas by etching a slot in each of the feed lines of two the antennas. The slots are folded to the shape of the letter S to conserve length of the feedlines. In each antenna, the slot is tuned to resonate at the operating frequency of the other antenna so that the other frequency is notched out. The antenna performance was investigated by simulation using CST Microwave Studio software. The results show that the proposed method has reduced the envelope correlation coefficient by 35 folds at the 2.45 GHz, and 21 folds at the 3.5GHz frequency bands. Measured S-parameters verified the simulated results.
{"title":"Crescent-shaped double-monopole antennas with reduced coupling for WLAN and WIMAX applications","authors":"L. S. Yahya, Khalil H. Sayidmarie, F. Elmegri, R. Abd‐Alhameed","doi":"10.1109/ITECHA.2015.7317434","DOIUrl":"https://doi.org/10.1109/ITECHA.2015.7317434","url":null,"abstract":"A double planar monopole antennas for WLAN and WiMAX application is proposed. Each antenna is represented in the form of crescent-shaped monopole structure. The lengths of the two arcs are designed to resonate at 2.45GHz, and 3.5GHz to meet the requirements for the WLAN and WiMAX standards respectively. The two monopoles have a small separation distance of 9mm (i.e., 0.0735λ0 at 2.45GHz). A new technique is proposed for the reduction of the mutual coupling between two closely-spaced antennas by etching a slot in each of the feed lines of two the antennas. The slots are folded to the shape of the letter S to conserve length of the feedlines. In each antenna, the slot is tuned to resonate at the operating frequency of the other antenna so that the other frequency is notched out. The antenna performance was investigated by simulation using CST Microwave Studio software. The results show that the proposed method has reduced the envelope correlation coefficient by 35 folds at the 2.45 GHz, and 21 folds at the 3.5GHz frequency bands. Measured S-parameters verified the simulated results.","PeriodicalId":161782,"journal":{"name":"2015 Internet Technologies and Applications (ITA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132098665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-11-05DOI: 10.1109/ITECHA.2015.7317423
Viktor V. Chistukhin, K. S. Lyalin, Zhanna V. Merkulova, V. I. Oreshkin, V. Grout
We describe the most important aspects of Smart Antenna Array design and functionality and give details of the operational Smart Antenna breadboard designed at the Moscow National Research University of Electronic Technology (MIET) for spatial interference reduction, including a description and some experimental results from beamformed pattern measurements.
{"title":"A spatial interference filter system breadboard on the base of a digital beamforming antenna","authors":"Viktor V. Chistukhin, K. S. Lyalin, Zhanna V. Merkulova, V. I. Oreshkin, V. Grout","doi":"10.1109/ITECHA.2015.7317423","DOIUrl":"https://doi.org/10.1109/ITECHA.2015.7317423","url":null,"abstract":"We describe the most important aspects of Smart Antenna Array design and functionality and give details of the operational Smart Antenna breadboard designed at the Moscow National Research University of Electronic Technology (MIET) for spatial interference reduction, including a description and some experimental results from beamformed pattern measurements.","PeriodicalId":161782,"journal":{"name":"2015 Internet Technologies and Applications (ITA)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125146114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-11-05DOI: 10.1109/ITECHA.2015.7317375
Hasan T. Arslan, D. Farkas
Gun violence and in particular police shootings have become prominent in the news media in the United. States. However, there is currently no national database of police incidents. This paper describes the first phase of a project to develop a database to collect, edit, query and analyze police shootings. The SHOT Project (Statistics Help Officer Tactics), an academic collaboration between Criminal Justice and Information Technology departments, has developed a protocol for collecting data from open sources using content analysis. The database will enable the research community and law enforcement the ability to study the dynamics of shooting incidents, the ability to analyze this information and be better prepared to understand trends and patterns. The second phase of the project will be GIS Visualization and an Internet-based enterprise system for update, query and analysis.
{"title":"SHOT: Developing a database for police shooting incidents in the United States","authors":"Hasan T. Arslan, D. Farkas","doi":"10.1109/ITECHA.2015.7317375","DOIUrl":"https://doi.org/10.1109/ITECHA.2015.7317375","url":null,"abstract":"Gun violence and in particular police shootings have become prominent in the news media in the United. States. However, there is currently no national database of police incidents. This paper describes the first phase of a project to develop a database to collect, edit, query and analyze police shootings. The SHOT Project (Statistics Help Officer Tactics), an academic collaboration between Criminal Justice and Information Technology departments, has developed a protocol for collecting data from open sources using content analysis. The database will enable the research community and law enforcement the ability to study the dynamics of shooting incidents, the ability to analyze this information and be better prepared to understand trends and patterns. The second phase of the project will be GIS Visualization and an Internet-based enterprise system for update, query and analysis.","PeriodicalId":161782,"journal":{"name":"2015 Internet Technologies and Applications (ITA)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132799653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-11-05DOI: 10.1109/ITECHA.2015.7317380
M. Barati, R. St.-Denis
The behavior composition problem consists in the synthesis of a controller that coordinates a set of available behaviors with the aim of realizing a desired target behavior. This problem suffers from a serious drawback because, for many instances, the target behavior cannot be achieved. In that case, the user is responsible for bringing changes until the problem becomes solvable. This inherent limitation is due to the fact that an exact match is required between the actions initiated by the user and those offered by the available behaviors. The main question is, how can a controller select a suitable behavior such that the functionality of one of its available actions is close to that currently requested by the desired target behavior? This paper provides an answer to this question by associating semantics to actions based on expectations and exploiting a semantic similarity function between actions. Similar actions that have different names, but comparable tasks, are considered equivalent. This renders the behavior composition framework more flexible so that it can fit with semantic environments.
{"title":"A semantic-based flexible framework for automatic behavior composition","authors":"M. Barati, R. St.-Denis","doi":"10.1109/ITECHA.2015.7317380","DOIUrl":"https://doi.org/10.1109/ITECHA.2015.7317380","url":null,"abstract":"The behavior composition problem consists in the synthesis of a controller that coordinates a set of available behaviors with the aim of realizing a desired target behavior. This problem suffers from a serious drawback because, for many instances, the target behavior cannot be achieved. In that case, the user is responsible for bringing changes until the problem becomes solvable. This inherent limitation is due to the fact that an exact match is required between the actions initiated by the user and those offered by the available behaviors. The main question is, how can a controller select a suitable behavior such that the functionality of one of its available actions is close to that currently requested by the desired target behavior? This paper provides an answer to this question by associating semantics to actions based on expectations and exploiting a semantic similarity function between actions. Similar actions that have different names, but comparable tasks, are considered equivalent. This renders the behavior composition framework more flexible so that it can fit with semantic environments.","PeriodicalId":161782,"journal":{"name":"2015 Internet Technologies and Applications (ITA)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122773806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-11-05DOI: 10.1109/ITECHA.2015.7317370
Adriana Caione, A. Martella, Roberto Paiano, Andrea Pandurino
The reference context in which companies operate is often characterized by a high level of complexity. Any attempt aimed to represent such complexity can be facilitated by referring to appropriate semantic knowledge bases, able to structure the domain concepts along with the relationships between them. Such consideration can be particularly applied to the Model-Driven designing phases of a software system, and especially within the User eXperience - UX - modelling process. In effect, the UX modelling is becoming more and more dominant, even with the advent of Rich Internet Applications - RIAs. They represent particular web applications that are capable to provide features and functionalities of traditional desktop applications. This paper introduces a Knowledge-Driven framework for the UX engineering process based on the interaction with a domain knowledge base, along with a prototype generator. Such framework is obtained by extending and by adapting an existing one, the IDM Editor, which performs the UX reengineering of a legacy application, using the methodology Interactive Dialogue Model - IDM.
{"title":"A Knowledge-Driven framework for user experience modelling and prototyping","authors":"Adriana Caione, A. Martella, Roberto Paiano, Andrea Pandurino","doi":"10.1109/ITECHA.2015.7317370","DOIUrl":"https://doi.org/10.1109/ITECHA.2015.7317370","url":null,"abstract":"The reference context in which companies operate is often characterized by a high level of complexity. Any attempt aimed to represent such complexity can be facilitated by referring to appropriate semantic knowledge bases, able to structure the domain concepts along with the relationships between them. Such consideration can be particularly applied to the Model-Driven designing phases of a software system, and especially within the User eXperience - UX - modelling process. In effect, the UX modelling is becoming more and more dominant, even with the advent of Rich Internet Applications - RIAs. They represent particular web applications that are capable to provide features and functionalities of traditional desktop applications. This paper introduces a Knowledge-Driven framework for the UX engineering process based on the interaction with a domain knowledge base, along with a prototype generator. Such framework is obtained by extending and by adapting an existing one, the IDM Editor, which performs the UX reengineering of a legacy application, using the methodology Interactive Dialogue Model - IDM.","PeriodicalId":161782,"journal":{"name":"2015 Internet Technologies and Applications (ITA)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123425485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-11-05DOI: 10.1109/ITECHA.2015.7317458
Rae A. Earnshaw, S. Liggett, Peter S. Excell
In the UK, periodic assessment of research in universities has taken place since 1986. The most recent took place during 2014 with the results being published at the end of the year. This evaluation is concerned with art and design though all disciplines were included in the assessment. The method used for assessing research quality is outlined and the results summarised. The lessons drawn from the evaluation by REF2014 are detailed. A number of issues are identified and discussed. These include the staff selected for submission, the method of evaluation, and a cost-benefit analysis of the process.
{"title":"Evaluating the REF2014 results in art and design","authors":"Rae A. Earnshaw, S. Liggett, Peter S. Excell","doi":"10.1109/ITECHA.2015.7317458","DOIUrl":"https://doi.org/10.1109/ITECHA.2015.7317458","url":null,"abstract":"In the UK, periodic assessment of research in universities has taken place since 1986. The most recent took place during 2014 with the results being published at the end of the year. This evaluation is concerned with art and design though all disciplines were included in the assessment. The method used for assessing research quality is outlined and the results summarised. The lessons drawn from the evaluation by REF2014 are detailed. A number of issues are identified and discussed. These include the staff selected for submission, the method of evaluation, and a cost-benefit analysis of the process.","PeriodicalId":161782,"journal":{"name":"2015 Internet Technologies and Applications (ITA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130413017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-11-05DOI: 10.1109/ITECHA.2015.7317428
V. Voytenko, S. Stepenko, Oleksandr Velihorskyi, R. Chakirov, Dylan Roberts, Y. Vagapov
The most important component of a closed-loop industrial control system is the communication unit located between a digital controller and the object being controlled. A pulse converter is usually used for this purpose in systems operating under pulse width modulation. However the dynamic characteristics of the converter bring a significant impact on the quality of the system regulation. This article discusses the design and implementation a closed-loop digital automatic control system for a zero-current switching quasi-resonant boost converter. It enables a high-speed transient process of the controlled object voltage having the advantages provided by pulse methods of electrical energy conversion. This paper also presents the simulation and experimental verification of the proposed approach.
{"title":"Digital control of a zero-current switching quasi-resonant boost converter","authors":"V. Voytenko, S. Stepenko, Oleksandr Velihorskyi, R. Chakirov, Dylan Roberts, Y. Vagapov","doi":"10.1109/ITECHA.2015.7317428","DOIUrl":"https://doi.org/10.1109/ITECHA.2015.7317428","url":null,"abstract":"The most important component of a closed-loop industrial control system is the communication unit located between a digital controller and the object being controlled. A pulse converter is usually used for this purpose in systems operating under pulse width modulation. However the dynamic characteristics of the converter bring a significant impact on the quality of the system regulation. This article discusses the design and implementation a closed-loop digital automatic control system for a zero-current switching quasi-resonant boost converter. It enables a high-speed transient process of the controlled object voltage having the advantages provided by pulse methods of electrical energy conversion. This paper also presents the simulation and experimental verification of the proposed approach.","PeriodicalId":161782,"journal":{"name":"2015 Internet Technologies and Applications (ITA)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116661734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-11-05DOI: 10.1109/ITECHA.2015.7317444
Khalil H. Sayidmarie, L. S. Yahya
A crescent-shaped planar monopole antenna for UWB applications is proposed. The design parameters were investigated using CST software package. Modeling of the UWB monopole antennas is investigated using two methods. The input impedance is represented by the first Foster canonical form, where the equivalent circuit components at resonance are derived from either the reflection coefficient or the input impedance responses of the investigated antenna. In the second method, a SPICE-compatible equivalent circuit is used to model the input admittance of the antenna utilizing the vector fitting technique. The CST Microwave Studio is used to obtain the reflection coefficient and input impedance of the investigated antenna, and these results are used to extract values of the components of the equivalent circuit. The performances of the investigated methods are compared, and validity of the modeling methods is verified using MATLAB and ADS softwares.
{"title":"Analysis design and modeling of crescent antenna for UWB applications","authors":"Khalil H. Sayidmarie, L. S. Yahya","doi":"10.1109/ITECHA.2015.7317444","DOIUrl":"https://doi.org/10.1109/ITECHA.2015.7317444","url":null,"abstract":"A crescent-shaped planar monopole antenna for UWB applications is proposed. The design parameters were investigated using CST software package. Modeling of the UWB monopole antennas is investigated using two methods. The input impedance is represented by the first Foster canonical form, where the equivalent circuit components at resonance are derived from either the reflection coefficient or the input impedance responses of the investigated antenna. In the second method, a SPICE-compatible equivalent circuit is used to model the input admittance of the antenna utilizing the vector fitting technique. The CST Microwave Studio is used to obtain the reflection coefficient and input impedance of the investigated antenna, and these results are used to extract values of the components of the equivalent circuit. The performances of the investigated methods are compared, and validity of the modeling methods is verified using MATLAB and ADS softwares.","PeriodicalId":161782,"journal":{"name":"2015 Internet Technologies and Applications (ITA)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128500110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：