2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)最新文献

筛选
英文 中文
Hardening as a best practice for WLAN Security Meanwhile WPA3 is released 加固作为WLAN安全的最佳实践同时,WPA3发布
2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX) Pub Date : 2019-11-01 DOI: 10.1109/CONCAPANXXXIX47272.2019.8977073
J. Castillo-Velazquez, M. A. Garcia, Daniel Javier Serrano Martinez
{"title":"Hardening as a best practice for WLAN Security Meanwhile WPA3 is released","authors":"J. Castillo-Velazquez, M. A. Garcia, Daniel Javier Serrano Martinez","doi":"10.1109/CONCAPANXXXIX47272.2019.8977073","DOIUrl":"https://doi.org/10.1109/CONCAPANXXXIX47272.2019.8977073","url":null,"abstract":"Since 2004 till today is common to use WPA2 which replaced the broken WPA for WLAN security. WPA replaced WEP in 2003, due to this first security protocol was broken. The WLAN security problem is WPA was broken in 2017, but there is no a WPA3, it is under development, meanwhile people is looking for security on their WLAN. This work offers proven recommendations when hardening is applied based on an analysis for a test scenario. Results show WLAN security is strengthened when implementing hardening.","PeriodicalId":272652,"journal":{"name":"2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123591161","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}
引用次数: 2
Mobile Robot for the Spraying of Corn Crops with autonomous navigation camera for the Plains of the Andes 安第斯平原玉米作物自主导航相机喷洒移动机器人
2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX) Pub Date : 2019-11-01 DOI: 10.1109/CONCAPANXXXIX47272.2019.8976963
Jhony Carbajal, G. Quispe, Heyul Chavez-Arias, C. Raymundo-Ibañez, Francisco Dominguez
{"title":"Mobile Robot for the Spraying of Corn Crops with autonomous navigation camera for the Plains of the Andes","authors":"Jhony Carbajal, G. Quispe, Heyul Chavez-Arias, C. Raymundo-Ibañez, Francisco Dominguez","doi":"10.1109/CONCAPANXXXIX47272.2019.8976963","DOIUrl":"https://doi.org/10.1109/CONCAPANXXXIX47272.2019.8976963","url":null,"abstract":"The incidence of the disease in horticultural crops is one of the important problems that affect the production of fruits, vegetables and flowers. Regular monitoring of crops for early diagnosis and treatment with pesticides or removal of the affected crop is part of the solution to minimize crop loss. The monitoring of crops by human labor is expensive, time consuming, prone to errors due to insufficient knowledge of the disease and highly repetitive at different stages of crop growth. These needs have motivated to design the mobile robot with vision sensors for navigation through the field. The robot has been designed in the Autodesk Inventor software. Programming for navigation is done in the Arduino Mega 2560 tool. Image capture has been performed using the RGB camera. Image processing for the identification of the disease and its representation in a graphical user interface has been performed using an algorithm in MATLAB R2018B that interacts with the Arduino tool through a communication bus. The system developed consists of the design of a prototype that uses simple and cost effective equipment such as Raspberry Pi, RGB camera, two motors and sensors that allow the autonomous fumigation of corn crops.","PeriodicalId":272652,"journal":{"name":"2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115594393","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}
引用次数: 0
Design of an unmanned aerial system for the detection of dangerous areas during fires 一种用于火灾危险区域探测的无人机系统设计
2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX) Pub Date : 2019-11-01 DOI: 10.1109/CONCAPANXXXIX47272.2019.8977051
Richard Daviran, G. Quispe, Heyul Chavez-Arias, C. Raymundo-Ibañez, Francisco Dominguez
{"title":"Design of an unmanned aerial system for the detection of dangerous areas during fires","authors":"Richard Daviran, G. Quispe, Heyul Chavez-Arias, C. Raymundo-Ibañez, Francisco Dominguez","doi":"10.1109/CONCAPANXXXIX47272.2019.8977051","DOIUrl":"https://doi.org/10.1109/CONCAPANXXXIX47272.2019.8977051","url":null,"abstract":"This article presents the design of an unmanned aerial vehicle manufactured in aramid, through the use of sensors and actuators for flight stabilization, capturing the images through a thermal imager and its wireless transmission for ground processing for application in the social security area used in fire accidents. The work shows that it is feasible to use the aramid material for the construction of the prototype, since it is a high temperature resistant material, also the integration of neural networks for semi-automatic flight control. The results of this research will serve to develop more advanced control devices, with simple components and controls so that people with technological limitations can use it, so that they can save lives in danger, that of their colleagues or themselves.","PeriodicalId":272652,"journal":{"name":"2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123833392","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}
引用次数: 0
Smart Mobile LoRa Agriculture System based on Internet of Things 基于物联网的智能移动LoRa农业系统
2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX) Pub Date : 2019-11-01 DOI: 10.1109/CONCAPANXXXIX47272.2019.8977109
S. Gutiérrez, Israel Martínez, J. Varona, M. Cardona, Ricardo Espinosa
{"title":"Smart Mobile LoRa Agriculture System based on Internet of Things","authors":"S. Gutiérrez, Israel Martínez, J. Varona, M. Cardona, Ricardo Espinosa","doi":"10.1109/CONCAPANXXXIX47272.2019.8977109","DOIUrl":"https://doi.org/10.1109/CONCAPANXXXIX47272.2019.8977109","url":null,"abstract":"Agriculture represents the main source of food in the world, but it also represents challenges such as population growth, urbanization and aging, global economic growth, investment, trade, and food prices and competition for natural resources. The development of technology can help us cope with these challenges. The internet of things (IoT) technology represents the future of computing and communications. These can be useful to improve traditional agriculture methods around the world. By implementing these modern technologies is possible to reduce costs and maintenance and, to increase the performance of our agriculture processes and goods. Particularly, one of this relatively new technology is the LoRa communication protocol that uses long wavelengths for the communication link to obtain long ranges. This is extremely useful in agriculture where the communicating areas are extensive crop fields and greenhouses. This paper proposes and presents the development of a mobile LoRaWANgateway device that can be applied to increase greenhouses' productivity and accuracy. The presented development includes the use of a Heltec's Mini LoRa Gateway controlled by a Raspberry Pi 3 B+. It is powered by an external Li-On battery and uses a defined number of LoRa nodes with sensors. Sensors will measure humidity and temperature and send the data, which are gathered by the mobile LoRaWAN gateway. These data are processed using third-party free online services. This document illustrates and explains the development and application of data collectors for agriculture and their advantages.","PeriodicalId":272652,"journal":{"name":"2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114376194","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}
引用次数: 21
IoT Platform for the Control and Monitoring of Physical Variables with Open Hardware Technology 基于开放硬件技术的物联网物理变量控制与监测平台
2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX) Pub Date : 2019-11-01 DOI: 10.1109/CONCAPANXXXIX47272.2019.8977015
Ricardo Edgardo Quintanilla Padilla, C. Lobos
{"title":"IoT Platform for the Control and Monitoring of Physical Variables with Open Hardware Technology","authors":"Ricardo Edgardo Quintanilla Padilla, C. Lobos","doi":"10.1109/CONCAPANXXXIX47272.2019.8977015","DOIUrl":"https://doi.org/10.1109/CONCAPANXXXIX47272.2019.8977015","url":null,"abstract":"The control and monitoring of physical variables in real time is very important to the industry to guarantee the quality of products, industrial safety, the operation of the machines and the manufacturing process. Nowadays, the Salvadoran industry must adopt technologies associated with the Internet of Things. Understanding as Internet of Things the possibility to provide Internet connection to any object, giving the user the possibility to make physical measures or remote controlling. In this case, knowing that the impact that represent for industry the control and monitoring of physical variables is very important, ITCA FEPADE Regional Center of Santa Ana City has designed and implemented a IoT platform to monitor the physical variables with educational purposes. For the designing of the platform some open source tools were use. The hardware tools used were atmega 328p and xbee antennas. PHP, Java and C were the programming language used for the interface design. This IoT platform can control the electric charges and monitoring variables like: electric current and power, electrical energy and temperature. For statistical measurement the computer center 2 and classroom 103 were chosen. For using this software, the user just needs a smartphone, a computer or a tablet to connect to the IoT platform. The user can visualize and have control of physical variables using the platform interface. Both devices (user device and the server) must be connected to the same network, in this case ITCA Santa Ana's network.","PeriodicalId":272652,"journal":{"name":"2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131961685","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}
引用次数: 0
Design of a solar tracker to improve the capture of solar radiation in photovoltaic panels using a closed loop control system 利用闭环控制系统设计了一种太阳能跟踪器,以提高光伏板对太阳辐射的捕获
2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX) Pub Date : 2019-11-01 DOI: 10.1109/CONCAPANXXXIX47272.2019.8976915
Chozver Gaspar, G. Quispe, Gianpierre Zapata-Ramirez, C. Raymundo-Ibañez, Luis Rivera
{"title":"Design of a solar tracker to improve the capture of solar radiation in photovoltaic panels using a closed loop control system","authors":"Chozver Gaspar, G. Quispe, Gianpierre Zapata-Ramirez, C. Raymundo-Ibañez, Luis Rivera","doi":"10.1109/CONCAPANXXXIX47272.2019.8976915","DOIUrl":"https://doi.org/10.1109/CONCAPANXXXIX47272.2019.8976915","url":null,"abstract":"This research presents the design of a solar tracker in order to make better use of solar energy that radiates in the skies of the province of Huancayo, a comprehensive biography with key contents and concepts was reviewed to make a good design Conceptually, a structure will be designed that adapts to the design of conventional photovoltaic systems. Everything is born from the need to take advantage of an inexhaustible resource, which is photovoltaic solar energy, a study in this field is proposed proposing the problems to be solved, and objectives such as analyzing the manufacturing costs of design, See the economic, technical and operational feasibility of the solar tracker, but above all you want to calculate the energy efficiency that can be gained by designing this type of mechanism and control system and compare with similar mechanisms existing in the market. For the development of the system, the German methodology VDI 2221 was used, which starts from a list of requirements and desires that the design must meet, and a function diagram of the previous concept is also made. To determine the most optimal solution, a morphological matrix is performed where all the solution alternatives are evaluated for each function and in the end a general solution concept is obtained and from this begins the economic, technical and operational evaluation of the solution.","PeriodicalId":272652,"journal":{"name":"2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116438430","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}
引用次数: 1
Monitoring Improvement on Reactive, Proactive and Hybrid Protocols of Wireless Sensor Networks 无线传感器网络被动、主动和混合协议的监测改进
2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX) Pub Date : 2019-11-01 DOI: 10.1109/CONCAPANXXXIX47272.2019.8977041
Carolina Del-Valle-Soto, R. Velázquez, C. Gutiérrez, Leonardo J. Valdivia, J. A. Del Puerto-Flores
{"title":"Monitoring Improvement on Reactive, Proactive and Hybrid Protocols of Wireless Sensor Networks","authors":"Carolina Del-Valle-Soto, R. Velázquez, C. Gutiérrez, Leonardo J. Valdivia, J. A. Del Puerto-Flores","doi":"10.1109/CONCAPANXXXIX47272.2019.8977041","DOIUrl":"https://doi.org/10.1109/CONCAPANXXXIX47272.2019.8977041","url":null,"abstract":"Wireless Sensor Networks (WSNs) base their performance on the routing protocol, which is in charge of managing information and making the network as resilient as possible. This work is based on performance metrics comparisons of three types of protocols (reactive, proactive and hybrid). In order to analyze wireless networks behavior and energy performance, simulations and real scenarios are ran on a university campus in Guadalajara, Mexico. The environment recreates the necessary conditions to evaluate and extrapolate the characteristics of a Smart Campus. With the implemented methodology, we can understand which performance metrics are impacting directly in a greater or lesser extent on three examples of well-known routing protocols. It is concluded that the hybrid protocol has 10% better performance than the others because it has the appropriate complexity and design to manage the packets under parameters such as: route validity and response time, overhead, packet re-transmissions, complexity, delay, resilience and energy. The simulation tool has an accuracy of 93 %, similar to the results thrown in a real environment where sensors are dispersed in 300 square meters of the campus.","PeriodicalId":272652,"journal":{"name":"2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127148588","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}
引用次数: 2
Health Information Management System for a Rural Medical Clinic in Nicaragua 尼加拉瓜农村诊所卫生信息管理系统
2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX) Pub Date : 2019-11-01 DOI: 10.1109/CONCAPANXXXIX47272.2019.8977099
Brianna Conte, Ethan Fortin, Pritpal Singh
{"title":"Health Information Management System for a Rural Medical Clinic in Nicaragua","authors":"Brianna Conte, Ethan Fortin, Pritpal Singh","doi":"10.1109/CONCAPANXXXIX47272.2019.8977099","DOIUrl":"https://doi.org/10.1109/CONCAPANXXXIX47272.2019.8977099","url":null,"abstract":"Medical Staff at the rural medical clinic on the island of El Bluff, Nicaragua currently waste countless hours using a manual, paper-and-pen filing system to store medical and health information about the inhabitants on the island. In addition, using paper to store important records poses many threats such as destruction from unanticipated fires or floods. The hospital's method of tracing pharmaceutical records is nearly as inefficient, with only one trained technician to hand record each individual pill which is distributed. To eliminate risks and disorganization surrounding the hospital's current processes, the proposed design offers a multi-faceted solution: a database to more effectively store patient data and keep track of pharmaceutical inventory records and an application allowing the doctors to communicate with the database. Successful implementation of the proposed design should enable the doctors in the hospital to fetch, edit, and store the records of any patient in minimal time via an Android application they access on the tablet system. Using the app, the doctor will be able to fill out forms and other documents previously maintained physically. From a pharmaceutical standpoint, the app will keep track of gains and losses of the hospital's inventory and record patient prescriptions. By creating one system which improves a large number of the medical center's problems, including the reduction of mistakes in data recording and analysis, and will help the health center to be as productive as possible.","PeriodicalId":272652,"journal":{"name":"2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122961092","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}
引用次数: 1
Growing your Membership: Sign MOA for Students and Faculty 增加会员:为学生和教师签署谅解备忘录
2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX) Pub Date : 2019-11-01 DOI: 10.1109/CONCAPANXXXIX47272.2019.8977049
Martínez-Cruz Carlos Eugenio
{"title":"Growing your Membership: Sign MOA for Students and Faculty","authors":"Martínez-Cruz Carlos Eugenio","doi":"10.1109/CONCAPANXXXIX47272.2019.8977049","DOIUrl":"https://doi.org/10.1109/CONCAPANXXXIX47272.2019.8977049","url":null,"abstract":"During the last decade, Salvadoran IEEE membership has growth 367%, from 132 members in December 2008 to 587 members in December 2018. Mainly, this growth had to do with an exponential growing in students membership. In the same period of time, student membership went from 62 to 426. A growth of 525% has its origin through the nurture of existence student branches and the creation of new ones. Three out of seven student branches were created in the last decade. One student branch was reactivated in 2018, after almost two decade being inactive. Since 2010, a memorandum of agreement is signed with local universities that happens to have college of engineering. They received some benefits from IEEE El Salvador Section for their students and for their faculties. MOAs have had a very positive impact and has improved student branches making some of them the biggest and the most dynamics at the Central America and Panama area.","PeriodicalId":272652,"journal":{"name":"2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123059545","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}
引用次数: 0
A General Overview of Vehicle-to-X (V2X) Beacon-Based Cooperative Vehicular Networks 车辆对x (V2X)信标协同车辆网络概述
2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX) Pub Date : 2019-11-01 DOI: 10.1109/CONCAPANXXXIX47272.2019.8977034
A. Marroquin, Marco Antonio To, César A. Azurdia-Meza, Sandy Bolufé
{"title":"A General Overview of Vehicle-to-X (V2X) Beacon-Based Cooperative Vehicular Networks","authors":"A. Marroquin, Marco Antonio To, César A. Azurdia-Meza, Sandy Bolufé","doi":"10.1109/CONCAPANXXXIX47272.2019.8977034","DOIUrl":"https://doi.org/10.1109/CONCAPANXXXIX47272.2019.8977034","url":null,"abstract":"Nowadays, much effort has been put on Intelligent Transport Systems (ITS) and Vehicle-to-Anything (V2X) communications, given the immense impact these technologies will make in the near future. V2X communications have become mainstream, pushing the standardization of various protocols in order to facilitate their implementation and interoperability between vendors and hardware manufacturers. Furthermore, V2X related standards are under the 5G umbrella; hence, in this work we describe the IEEE 1609 and IEEE 802.11p standards, which define the Dedicated Short-Range Communication (DSRC) and the Wireless Access in Vehicular Environments (WAVE) technologies. Emphasis is made on the Physical and Data Link Layers, along with the specifications of the previous mentioned standards.","PeriodicalId":272652,"journal":{"name":"2019 IEEE 39th Central America and Panama Convention (CONCAPAN XXXIX)","volume":"313 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115625501","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}
引用次数: 1
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信