Pub Date : 2016-11-01DOI: 10.1109/TENCON.2016.7847984
Huynh Thi Thanh Binh, Pham Dinh Thanh
Traveling salesman problem is a famous discrete optimization problem and has many applications in the real world. Biogeography-based on optimization algorithm (BBO) is a new evolution algorithm inspired by the science of biogcograpln and designed based on the migration strategy of animals. According to investigations and analysis on this algorithm, BBO has great success in numerous optimization problems and it has been used in different types of applications. In BBO, the migration operator is an important operator which is able to efficiently share the good information among solutions. In order to improve the performance of the migration operator, this paper proposes a new migration operator in BBO for solving TSP, The results of BBO using the new operator is compared with that using an existing migration operator on TSP instances from TSP-Lib. Experiment results show that the new migration operator is more effective in terms of quality of solution for most of the data instances.
{"title":"New migration operator in Biogeography-based optimization for solving traveling salesman problem","authors":"Huynh Thi Thanh Binh, Pham Dinh Thanh","doi":"10.1109/TENCON.2016.7847984","DOIUrl":"https://doi.org/10.1109/TENCON.2016.7847984","url":null,"abstract":"Traveling salesman problem is a famous discrete optimization problem and has many applications in the real world. Biogeography-based on optimization algorithm (BBO) is a new evolution algorithm inspired by the science of biogcograpln and designed based on the migration strategy of animals. According to investigations and analysis on this algorithm, BBO has great success in numerous optimization problems and it has been used in different types of applications. In BBO, the migration operator is an important operator which is able to efficiently share the good information among solutions. In order to improve the performance of the migration operator, this paper proposes a new migration operator in BBO for solving TSP, The results of BBO using the new operator is compared with that using an existing migration operator on TSP instances from TSP-Lib. Experiment results show that the new migration operator is more effective in terms of quality of solution for most of the data instances.","PeriodicalId":246458,"journal":{"name":"2016 IEEE Region 10 Conference (TENCON)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115223415","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 : 2016-11-01DOI: 10.1109/TENCON.2016.7848317
Jason M. Dy Perez, Windel B. Misa, Patrick Alvin C. Tan, R. Yap, Julita Robles
Ion sensitive Field Effect Transistor (ISFET) is popularly known for its numerous applications in the field of Biomedical Engineering. In this paper, we manually built a glucose sensor from ISFET. The Glucose sensor is then interfaced to a microcontroller to implement a glucometer. A Wifi module is then embedded to the system to allow a doctor to wirelessly monitor the blood sugar level of his patients through the network. A user friendly GUI is also created for the convenience of the doctor in accessing patients' record. A database is also created for each patient to allow the doctor to keep the patients record individually.
{"title":"A wireless blood sugar monitoring system using ion-sensitive Field Effect Transistor","authors":"Jason M. Dy Perez, Windel B. Misa, Patrick Alvin C. Tan, R. Yap, Julita Robles","doi":"10.1109/TENCON.2016.7848317","DOIUrl":"https://doi.org/10.1109/TENCON.2016.7848317","url":null,"abstract":"Ion sensitive Field Effect Transistor (ISFET) is popularly known for its numerous applications in the field of Biomedical Engineering. In this paper, we manually built a glucose sensor from ISFET. The Glucose sensor is then interfaced to a microcontroller to implement a glucometer. A Wifi module is then embedded to the system to allow a doctor to wirelessly monitor the blood sugar level of his patients through the network. A user friendly GUI is also created for the convenience of the doctor in accessing patients' record. A database is also created for each patient to allow the doctor to keep the patients record individually.","PeriodicalId":246458,"journal":{"name":"2016 IEEE Region 10 Conference (TENCON)","volume":"336 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115228745","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 : 2016-11-01DOI: 10.1109/TENCON.2016.7847950
Bharat Singh, Nidhi Kushwaha, O. Vyas
Sentiment analysis plays a very important role in BI's (Business Intelligence) applications which has been evident in the recent market activities. Towards sentiment analysis for most of the popular websites like Amazon, Facebook, Twitter necessitate the review of the customers which are used as a feedback. It's play very important role for product review, Business intelligence as well as in decision making. The main problem that arises to the point of view of users/customers is that, it is practically in-feasible to read all those online reviews one by one, because some of the products might have tens of thousand reviews. In this paper, reviews are collected from the sources like Amazon, Flipkart, and then used a method to combine both NLP (Natural Language Processing) and machine learning approach. Word sense disambiguation is also considered for this study. An improvised lesk algorithms is used for removing noise in the data. Different types of data have different types of properties and therefore are suited to different techniques correspondingly. This problem is closely related to the large scale nature of social networks and the necessity to perform aggregation operations, which results in the form of Pie-Chart. Thus, we aggregate millions of reviews into more user-friendly format.
{"title":"An interpretation of sentiment analysis for enrichment of Business Intelligence","authors":"Bharat Singh, Nidhi Kushwaha, O. Vyas","doi":"10.1109/TENCON.2016.7847950","DOIUrl":"https://doi.org/10.1109/TENCON.2016.7847950","url":null,"abstract":"Sentiment analysis plays a very important role in BI's (Business Intelligence) applications which has been evident in the recent market activities. Towards sentiment analysis for most of the popular websites like Amazon, Facebook, Twitter necessitate the review of the customers which are used as a feedback. It's play very important role for product review, Business intelligence as well as in decision making. The main problem that arises to the point of view of users/customers is that, it is practically in-feasible to read all those online reviews one by one, because some of the products might have tens of thousand reviews. In this paper, reviews are collected from the sources like Amazon, Flipkart, and then used a method to combine both NLP (Natural Language Processing) and machine learning approach. Word sense disambiguation is also considered for this study. An improvised lesk algorithms is used for removing noise in the data. Different types of data have different types of properties and therefore are suited to different techniques correspondingly. This problem is closely related to the large scale nature of social networks and the necessity to perform aggregation operations, which results in the form of Pie-Chart. Thus, we aggregate millions of reviews into more user-friendly format.","PeriodicalId":246458,"journal":{"name":"2016 IEEE Region 10 Conference (TENCON)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115912681","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}
Nonlinear phenomena in a digital integral-controlled synchronous Buck converter working in continuous conduction mode (CCM) are studied in this paper. Firstly, the closed-loop model of the system in z-domain is established. Next, the stability boundary of the system is calculated according to the Routh stability criterion. Then, the two nonlinear quantizers, namely the analog-to-digital converter (ADC) and the digital pulse width modulator (DPWM), are characterized via describing function method, and the approximate boundary to avoid limit-cycle oscillations of output voltage is obtained. Effectiveness of the calculated boundaries is validated by simulation in Simulink. It is found that the system will experience limit cycle oscillations and Hopf bifurcations successively with the increase of integral gain.
{"title":"Analysis of nonlinear phenomena in digital integral-controlled Buck converters","authors":"Xin Zhao, Changyuan Chang, Yuanye Li, Zhongjie Zhou","doi":"10.1109/TENCON.2016.7847960","DOIUrl":"https://doi.org/10.1109/TENCON.2016.7847960","url":null,"abstract":"Nonlinear phenomena in a digital integral-controlled synchronous Buck converter working in continuous conduction mode (CCM) are studied in this paper. Firstly, the closed-loop model of the system in z-domain is established. Next, the stability boundary of the system is calculated according to the Routh stability criterion. Then, the two nonlinear quantizers, namely the analog-to-digital converter (ADC) and the digital pulse width modulator (DPWM), are characterized via describing function method, and the approximate boundary to avoid limit-cycle oscillations of output voltage is obtained. Effectiveness of the calculated boundaries is validated by simulation in Simulink. It is found that the system will experience limit cycle oscillations and Hopf bifurcations successively with the increase of integral gain.","PeriodicalId":246458,"journal":{"name":"2016 IEEE Region 10 Conference (TENCON)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124408006","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 : 2016-11-01DOI: 10.1109/TENCON.2016.7848585
B. Krishna, M. Rao, B. Nalinikant, D. K. Golhani, S. Tiwari
Nanotechnology and bionanotechnology has opened new ways for fabricating sensors to detect gases, explosives or biological molecules. Biological molecule detection is very important for healthcare industry, food industry and in research. Nanostructured metal-oxides can be used to fabricate biosensors with high sensitivity, good response time and chemical stability for the detection of biological molecules by electrochemical oxidation. In this paper, we developed a nanostructured metal-oxide anatase TiO2 thin film as a sensing surface by using a new technique. The TiO2/SiO2/Si thin film matrix based glucose biosensor has good sensitivity, response time and selectivity. The phase modified anatase titania sensing thin film has been fabricated by biological technique using biological cells. The anatase TiO2 thin film was deposited on SiO2/Si at 28°C in presence of magnetic field. The high surface to volume ratio of TiO2 thin film showed excellent response to detect the glucose molecule. The results of time response studies of this biosensor show excellent sensitivity and rapid detection. The fabrication method of sensor for biomolecule detection is green and cost effective process for the development of sensing device for biosensing applications.
{"title":"Highly sensitive TiO2 thin film matrix biosensor for glucose detection in blood","authors":"B. Krishna, M. Rao, B. Nalinikant, D. K. Golhani, S. Tiwari","doi":"10.1109/TENCON.2016.7848585","DOIUrl":"https://doi.org/10.1109/TENCON.2016.7848585","url":null,"abstract":"Nanotechnology and bionanotechnology has opened new ways for fabricating sensors to detect gases, explosives or biological molecules. Biological molecule detection is very important for healthcare industry, food industry and in research. Nanostructured metal-oxides can be used to fabricate biosensors with high sensitivity, good response time and chemical stability for the detection of biological molecules by electrochemical oxidation. In this paper, we developed a nanostructured metal-oxide anatase TiO2 thin film as a sensing surface by using a new technique. The TiO2/SiO2/Si thin film matrix based glucose biosensor has good sensitivity, response time and selectivity. The phase modified anatase titania sensing thin film has been fabricated by biological technique using biological cells. The anatase TiO2 thin film was deposited on SiO2/Si at 28°C in presence of magnetic field. The high surface to volume ratio of TiO2 thin film showed excellent response to detect the glucose molecule. The results of time response studies of this biosensor show excellent sensitivity and rapid detection. The fabrication method of sensor for biomolecule detection is green and cost effective process for the development of sensing device for biosensing applications.","PeriodicalId":246458,"journal":{"name":"2016 IEEE Region 10 Conference (TENCON)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124455698","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 : 2016-11-01DOI: 10.1109/TENCON.2016.7848746
Si Wen-rong, Fu Chen-zhao, Lu Bing-Bing, Guo Xiang, Xu Zhi-Bing
In this paper, taking parameters measurement for grounding grids of the 1000kV ultra-high-voltage (UHV) Suzhou substation as an example, it introduces the basic situation about the designed grounding grids, the methods used to measure the power frequency (50 Hz) ground resistance (PFGR) and impulse grounding impedance (IGI), respectively. The PFGR data are analyzed and checked which were measured using the non-50Hz-frequency current method with two different instruments. While the measurement of IGI was realized using a small and portable instrument, which can output the 8/20 µs or 10/350 µs lightning currents with simultaneously recording the corresponding voltage waveforms from the grounding grids. All of work accumulated the engineering experience of the on-site test and parameters measurement technology for the grounding grids of 1000kV UHV substations.
{"title":"Parameters measurement for grounding grids of a 1000kV ultra-high-voltage substation","authors":"Si Wen-rong, Fu Chen-zhao, Lu Bing-Bing, Guo Xiang, Xu Zhi-Bing","doi":"10.1109/TENCON.2016.7848746","DOIUrl":"https://doi.org/10.1109/TENCON.2016.7848746","url":null,"abstract":"In this paper, taking parameters measurement for grounding grids of the 1000kV ultra-high-voltage (UHV) Suzhou substation as an example, it introduces the basic situation about the designed grounding grids, the methods used to measure the power frequency (50 Hz) ground resistance (PFGR) and impulse grounding impedance (IGI), respectively. The PFGR data are analyzed and checked which were measured using the non-50Hz-frequency current method with two different instruments. While the measurement of IGI was realized using a small and portable instrument, which can output the 8/20 µs or 10/350 µs lightning currents with simultaneously recording the corresponding voltage waveforms from the grounding grids. All of work accumulated the engineering experience of the on-site test and parameters measurement technology for the grounding grids of 1000kV UHV substations.","PeriodicalId":246458,"journal":{"name":"2016 IEEE Region 10 Conference (TENCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114448271","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 : 2016-11-01DOI: 10.1109/TENCON.2016.7847951
Vijayalakshmi Senniappan, J. Subramanian, A. Thirumal
Buildings today are a complex integration of structures, systems and technology. Sensors are increasingly being installed in buildings to gather data about the various factors which helps to monitor the health of the structural components. Energy efficiency and network congestion are the most common issues faced by the sensor nodes. The proposed piece of work, uses a bio inspired swarm intelligence algorithm to improve the energy efficiency of the sensor nodes and mitigates congestion by forming clusters. The proposed method employes Biography Based Krill Herd algorithm for improving the network performance. The results of the proposed method, when compared with other classical evolutionary optimizations, has shown an increase of 42.11% of the network lifetime.
{"title":"Application of novel swarm intelligence algorithm for congestion control in structural health monitoring","authors":"Vijayalakshmi Senniappan, J. Subramanian, A. Thirumal","doi":"10.1109/TENCON.2016.7847951","DOIUrl":"https://doi.org/10.1109/TENCON.2016.7847951","url":null,"abstract":"Buildings today are a complex integration of structures, systems and technology. Sensors are increasingly being installed in buildings to gather data about the various factors which helps to monitor the health of the structural components. Energy efficiency and network congestion are the most common issues faced by the sensor nodes. The proposed piece of work, uses a bio inspired swarm intelligence algorithm to improve the energy efficiency of the sensor nodes and mitigates congestion by forming clusters. The proposed method employes Biography Based Krill Herd algorithm for improving the network performance. The results of the proposed method, when compared with other classical evolutionary optimizations, has shown an increase of 42.11% of the network lifetime.","PeriodicalId":246458,"journal":{"name":"2016 IEEE Region 10 Conference (TENCON)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114774678","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 : 2016-11-01DOI: 10.1109/TENCON.2016.7848612
T. Komatsu, Sougo Kondou, T. Saito
When a video sequence is compressed by the MPEG encoder with a low coding rate, various artifacts such as blocking artifacts are produced. To remove the artifacts, this paper proposes a video restoration approach with the 3-D redundant DCT, which utilizes spatiotemporal correlations of a moving image sequence more effectually than the 3-D orthogonal DCT. The approach recovers an image sequence by applying the shrinkage operation to 3-D DCT coefficients of the recovered sequence with the imposition of the MPEG-quantization constraint, an expansion of the JPEG-quantization constraint. Experimental simulations demonstrate that the approach successfully removes the compression artifacts selectively and improves subjective quality considerably.
{"title":"3-D redundant DCT restoration method for MPEG-compressed video","authors":"T. Komatsu, Sougo Kondou, T. Saito","doi":"10.1109/TENCON.2016.7848612","DOIUrl":"https://doi.org/10.1109/TENCON.2016.7848612","url":null,"abstract":"When a video sequence is compressed by the MPEG encoder with a low coding rate, various artifacts such as blocking artifacts are produced. To remove the artifacts, this paper proposes a video restoration approach with the 3-D redundant DCT, which utilizes spatiotemporal correlations of a moving image sequence more effectually than the 3-D orthogonal DCT. The approach recovers an image sequence by applying the shrinkage operation to 3-D DCT coefficients of the recovered sequence with the imposition of the MPEG-quantization constraint, an expansion of the JPEG-quantization constraint. Experimental simulations demonstrate that the approach successfully removes the compression artifacts selectively and improves subjective quality considerably.","PeriodicalId":246458,"journal":{"name":"2016 IEEE Region 10 Conference (TENCON)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114779316","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 : 2016-11-01DOI: 10.1109/TENCON.2016.7848768
A. Das, R. Kumar, D. Kisku, G. Sanyal
Visual Saliency plays an important role in attending faces in the crowd. While considering faces in a crowd, humans are inclined towards certain faces due to dominance of some features in those faces like color, texture, intensity, geometry etc. In this paper, we have proposed a novel method to analyze the saliency of faces in a crowd face image based on four parameters namely feature difference (intensity difference), spatial distance, area of each face and camera distance i.e. distance of each face in crowd from the viewer's point. To the best of our knowledge it is confirmed that this zone has not been explored by researchers to its full capacity till now. The experimental results have been found motivating. This method can find its future application in artificial intelligent systems and cognitive models can be established based on this theory which has the capacity to mimic the ability of human vision system.
{"title":"A novel approach to attend faces in the crowd through relative visual saliency","authors":"A. Das, R. Kumar, D. Kisku, G. Sanyal","doi":"10.1109/TENCON.2016.7848768","DOIUrl":"https://doi.org/10.1109/TENCON.2016.7848768","url":null,"abstract":"Visual Saliency plays an important role in attending faces in the crowd. While considering faces in a crowd, humans are inclined towards certain faces due to dominance of some features in those faces like color, texture, intensity, geometry etc. In this paper, we have proposed a novel method to analyze the saliency of faces in a crowd face image based on four parameters namely feature difference (intensity difference), spatial distance, area of each face and camera distance i.e. distance of each face in crowd from the viewer's point. To the best of our knowledge it is confirmed that this zone has not been explored by researchers to its full capacity till now. The experimental results have been found motivating. This method can find its future application in artificial intelligent systems and cognitive models can be established based on this theory which has the capacity to mimic the ability of human vision system.","PeriodicalId":246458,"journal":{"name":"2016 IEEE Region 10 Conference (TENCON)","volume":"455 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114533217","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 : 2016-11-01DOI: 10.1109/TENCON.2016.7847973
R. K., D. Kurup
In this article, we propose a new RFID anti-collision algorithm which increases the throughput as well as system efficiency when compared to the Dynamic Frame Slotted Aloha (DFSA) algorithm in EPC-global standard. The proposed algorithm is synthesized in 180nm technology for studying its power consumption and on-chip area.
{"title":"Implementation aspects of a new RFID anti-collision algorithm","authors":"R. K., D. Kurup","doi":"10.1109/TENCON.2016.7847973","DOIUrl":"https://doi.org/10.1109/TENCON.2016.7847973","url":null,"abstract":"In this article, we propose a new RFID anti-collision algorithm which increases the throughput as well as system efficiency when compared to the Dynamic Frame Slotted Aloha (DFSA) algorithm in EPC-global standard. The proposed algorithm is synthesized in 180nm technology for studying its power consumption and on-chip area.","PeriodicalId":246458,"journal":{"name":"2016 IEEE Region 10 Conference (TENCON)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115045987","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：