Electronic Journal of Information Systems in Developing Countries最新文献

筛选
英文 中文
Maturity as a critical sustainability factor for e-government: Toward a conceptual framework 成熟度是电子政务可持续发展的关键因素:建立概念框架
IF 1.3
Electronic Journal of Information Systems in Developing Countries Pub Date : 2023-11-28 DOI: 10.1002/isd2.12308
Hiwot Feleke, Lemma Lessa
{"title":"Maturity as a critical sustainability factor for e-government: Toward a conceptual framework","authors":"Hiwot Feleke,&nbsp;Lemma Lessa","doi":"10.1002/isd2.12308","DOIUrl":"10.1002/isd2.12308","url":null,"abstract":"<p>Extant literature reveals that many e-government initiatives fail especially in developing countries. Despite the alarming failure rate of e-government initiatives, governments of developing countries are allocating a huge budget to support and improve e-government services. Prior research suggested that maturity is a prerequisite for e-government sustainability, but the relationship between e-government maturity and sustainability is not investigated. Hence, this research is aimed at developing a conceptual framework that maps e-government maturity to a sustainable e-government service. First, the determinants of e-government maturity and sustainability were derived from the extant literature. Then, the proposed conceptual framework is revised based on qualitative research using a multiple exploratory case study considering four G2C cases selected from the e-government portal of Ethiopia. The conceptual framework was evaluated by domain experts, and the empirical data were analyzed using the thematic analysis technique. The study results show that manager's commitment to prioritize e-government projects, availability of an ICT department with an independent annual budget for the e-government development, human resource capability, degree and frequency of customer contacts, ICT infrastructure development, integration, website age, legal and political strategies, organizational e-government operational plan, and e-payments were identified to be the determinants of e-government maturity. The study contributes to e-government literature by providing a better understanding of the determinants of e-government service maturity and sustainability and the link between the two constructs. The outcome of the research could also be of value for practitioners as a quality tool to assess the maturity and sustainability of e-government initiatives. Evaluating the applicability of the proposed framework in different country contexts, a cross-case study across nations, and conducting a longitudinal investigation of e-government maturity and sustainability are avenues for future research.</p>","PeriodicalId":46610,"journal":{"name":"Electronic Journal of Information Systems in Developing Countries","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139224002","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
ICT and rural development in the global south. By Willem van Eekelen, 1st edn, Routledge, London, 2023, p. 226. 全球南部的信息和通信技术与农村发展》。Willemvan Eekelen(编辑)著,第 1 版,Routledge,伦敦,2023 年,第 226 页。
IF 1.3
Electronic Journal of Information Systems in Developing Countries Pub Date : 2023-11-28 DOI: 10.1002/isd2.12309
Malcolm Garbutt
{"title":"ICT and rural development in the global south. By Willem van Eekelen, 1st edn, Routledge, London, 2023, p. 226.","authors":"Malcolm Garbutt","doi":"10.1002/isd2.12309","DOIUrl":"10.1002/isd2.12309","url":null,"abstract":"","PeriodicalId":46610,"journal":{"name":"Electronic Journal of Information Systems in Developing Countries","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139224100","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
Practical Considerations for Implementing Adaptive Acoustic Noise Cancellation in Commercial Earbuds 在商用耳塞中实现自适应降噪的实际考虑
Electronic Journal of Information Systems in Developing Countries Pub Date : 2023-11-06 DOI: 10.30564/jeis.v5i2.5998
Agustinus Oey
{"title":"Practical Considerations for Implementing Adaptive Acoustic Noise Cancellation in Commercial Earbuds","authors":"Agustinus Oey","doi":"10.30564/jeis.v5i2.5998","DOIUrl":"https://doi.org/10.30564/jeis.v5i2.5998","url":null,"abstract":"Active noise cancellation has become a prominent feature in contemporary in-ear personal audio devices. However, due to constraints related to component arrangement, power consumption, and manufacturing costs, most commercial products utilize fixed-type controller systems as the basis for their active noise control algorithms. These systems offer robust performance and a straightforward structure, which is achievable with cost-effective digital signal processors. Nonetheless, a major drawback of fixed-type controllers is their inability to adapt to changes in acoustic transfer paths, such as variations in earpiece fitting conditions. Therefore, adaptive-type active noise control systems that employ adaptive digital filters are considered as the alternative. To address the increasing system complexity, design concepts and implementation strategies are discussed with respect to actual hardware limitations. To illustrate these considerations, a case study showcasing the implementation of a filtered-x least mean square-based active noise control algorithm is presented. A commercial evaluation board accommodating a low-cost, fixed-point digital signal processor is used to simplify operation and provide programming access. The earbuds are obtained from a commercial product designed for noise cancellation. This study underscores the importance of addressing hardware constraints when implementing adaptive active noise cancellation, providing valuable insights for real-world applications.","PeriodicalId":46610,"journal":{"name":"Electronic Journal of Information Systems in Developing Countries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135634977","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
E-trading and services quality effects on stock exchange in a developing country: A study of Dhaka stock exchange 电子交易和服务质量对发展中国家证券交易所的影响:达卡证券交易所研究
IF 1.3
Electronic Journal of Information Systems in Developing Countries Pub Date : 2023-10-21 DOI: 10.1002/isd2.12305
Shah Md Safiul Hoque, Hesham Magd, Mohammad Ashraf, Abu Zafar Md Rashed Osman, Shah Mohammad Mazeedul Hoque
{"title":"E-trading and services quality effects on stock exchange in a developing country: A study of Dhaka stock exchange","authors":"Shah Md Safiul Hoque,&nbsp;Hesham Magd,&nbsp;Mohammad Ashraf,&nbsp;Abu Zafar Md Rashed Osman,&nbsp;Shah Mohammad Mazeedul Hoque","doi":"10.1002/isd2.12305","DOIUrl":"10.1002/isd2.12305","url":null,"abstract":"<p>In a developing country like Bangladesh, Members' satisfaction with stock exchanges was examined in this study based on the quality of e-trading services. Five specific objectives were set to accomplish the main objective. This study further used a tangibility dimension, empathy factor, and responsiveness dimension to define E-trading service quality. We conducted a descriptive and explanatory survey with 192 participants and 186 respondents (96.8%). The research design consisted of a mix of descriptive and explanatory methods. Data were collected through survey questionnaires with Likert scales using the SPSS (version 25) software program. Data analysis and interpretation were carried out using both descriptive and inferential statistics. It was found that both the Dhaka e-trading center and stock exchange moderately practiced all study variables. The level of member satisfaction with stock exchange services is significantly influenced by the level of reliability, tangibility, empathy, assurance, and responsiveness of that service. Using regression analysis, it has been found that the dimensions of E-trading service quality can explain 57.5% of the variation in stock exchange members' satisfaction. There is a positive statistically significant relationship between members' satisfaction with reliability, assurance, tangibility, and empathy, and no statistically significant relationship between members' satisfaction with responsiveness. Thus, exchange management bodies should improve practices regarding these dimensions of E-trading service quality to increase member satisfaction.</p>","PeriodicalId":46610,"journal":{"name":"Electronic Journal of Information Systems in Developing Countries","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135511953","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 community-driven social knowledge management framework for bridging rural–urban knowledge divide using social technology 利用社会技术弥合城乡知识鸿沟的社区驱动型社会知识管理框架
IF 1.3
Electronic Journal of Information Systems in Developing Countries Pub Date : 2023-10-18 DOI: 10.1002/isd2.12306
Jayanta Basak, Parama Bhaumik
{"title":"A community-driven social knowledge management framework for bridging rural–urban knowledge divide using social technology","authors":"Jayanta Basak,&nbsp;Parama Bhaumik","doi":"10.1002/isd2.12306","DOIUrl":"10.1002/isd2.12306","url":null,"abstract":"<p>This article illustrates how a social knowledge management (SKM) platform can be conceptualized, developed and implemented that can provide users with multi-community connectivity, making it quicker and easier for members to connect, communicate, collaborate, and learn. By conducting case studies on rural craft producers in West Bengal, India, we have demonstrated how this platform fosters meaningful collaboration among rural artisans and various stakeholders within the craft production system, ultimately resulting in the formation of vibrant virtual communities. The platform promotes purposeful knowledge exchanges among variety of agents, which helps to reduce the knowledge divide and the market isolation that rural artisans experience. The platform enhances inter and intra-group communication that supports rural artisans to establish their independent credibility in their trade without the assistance of intermediaries or middlemen.</p>","PeriodicalId":46610,"journal":{"name":"Electronic Journal of Information Systems in Developing Countries","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135825332","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
Determinants influencing SMEs in E-commerce adoption through local government facilities in Indonesia: Mixed methods approach 影响印度尼西亚中小型企业通过地方政府设施采用电子商务的决定因素:混合方法
IF 1.3
Electronic Journal of Information Systems in Developing Countries Pub Date : 2023-09-25 DOI: 10.1002/isd2.12301
Bagus Nuari Harmawan, Wahyu Fahrul Ridho
{"title":"Determinants influencing SMEs in E-commerce adoption through local government facilities in Indonesia: Mixed methods approach","authors":"Bagus Nuari Harmawan,&nbsp;Wahyu Fahrul Ridho","doi":"10.1002/isd2.12301","DOIUrl":"10.1002/isd2.12301","url":null,"abstract":"<p>The entry of SMEs into the E-Commerce network is influenced by various variables that can affect success in the business world. This study examines the determinant factors contributing to SMEs competing in the world of E-Commerce. In addition, this study also examines several factors that can influence SMEs in entering digital market networks. This research uses a mixed method with an explanatory design approach. For the first stage, this study was analyzed using a quantitative approach by surveying 56 SMEs members of the Banyuwangi-mall.com E-Commerce in Banyuwangi City, East Java Province, Indonesia. Quantitative data analysis was carried out by utilizing the Smart PLS 4 application. Furthermore, to carry out a more in-depth analysis, a qualitative stage was carried out by conducting semi-structured interviews with 13 SMEs owners who are members of Banyuwangi-mall.com E-Commerce marketing. The study results show that the factors influencing SMEs to enter e-commerce networks are regulatory support, competitor pressure, and the stability of information technology infrastructure. In contrast, the characteristics of the supporters/leaders and budget variables negatively influence the characteristics. The negative relationship between leader characteristics is caused by two things: the dominance of the role of creative houses and the lack of orders received by SMEs on the Banyuwangi-mall.com website. As for the budget aspect, the absence of a particular budget for SME activities in Banyuwangi-mall.com online marketing is the reason for needing a positive influence.</p>","PeriodicalId":46610,"journal":{"name":"Electronic Journal of Information Systems in Developing Countries","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135770954","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
The Application of Information Systems to Improve Ambulance Response Times in the UK 信息系统在英国的应用,以提高救护车的反应时间
Electronic Journal of Information Systems in Developing Countries Pub Date : 2023-09-21 DOI: 10.30564/jeis.v5i2.5881
Alan Slater
{"title":"The Application of Information Systems to Improve Ambulance Response Times in the UK","authors":"Alan Slater","doi":"10.30564/jeis.v5i2.5881","DOIUrl":"https://doi.org/10.30564/jeis.v5i2.5881","url":null,"abstract":"Emergency ambulance services in the UK are tasked with providing pre-hospital patient care and clinical services with a target response time between call connect to on-scene attendance. In 2017, NHS England introduced four new response time categories based on patient needs. The most challenging is to be on-scene for a life-threatening situation within seven minutes of the call being connected when such calls are random in terms of time and place throughout a large territory. Recent evidence indicates emergency ambulance services regularly fall short of achieving the target ambulance response times set by the National Health Service (NHS). To achieve these targets, they need to undertake transformational change and apply statistical, operations research and artificial intelligence techniques in the form of five separate modules covering demand forecasting, plus locate, allocate, dispatch, monitoring and re-deployment of resources. These modules should be linked in real-time employing a data warehouse to minimise computational data and generate accurate, meaningful and timely decisions ensuring patients receive an appropriate and timely response. A simulation covering a limited geographical area, time and operational data concluded that this form of integration of the five modules provides accurate and timely data upon which to make decisions that effectively improve ambulance response times.","PeriodicalId":46610,"journal":{"name":"Electronic Journal of Information Systems in Developing Countries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136235663","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
RFID technology usage and supply chain global positioning information sharing system: An enablers of manufacturing enterprises' supply chain performance-fresh insights from the Middle East region as developing countries RFID 技术的使用和供应链全球定位信息共享系统:制造业企业供应链绩效的促进因素--来自中东地区发展中国家的新启示
IF 1.3
Electronic Journal of Information Systems in Developing Countries Pub Date : 2023-09-19 DOI: 10.1002/isd2.12304
Moh'd Anwer AL-Shboul
{"title":"RFID technology usage and supply chain global positioning information sharing system: An enablers of manufacturing enterprises' supply chain performance-fresh insights from the Middle East region as developing countries","authors":"Moh'd Anwer AL-Shboul","doi":"10.1002/isd2.12304","DOIUrl":"10.1002/isd2.12304","url":null,"abstract":"<p>This research aims to assess a conceptual framework that includes radio frequency identification (RFID) technology usage and integrated with supply chain (SC) global positioning information system (GPIS) as antecedents to supply chain performance (SCP). A Web-based survey questionnaire was used for the data collection process. The research framework and the derived hypotheses were tested by structural equation modeling. Data were gathered from a sample of 314 participants who are working in manufacturing-sector enterprises. The targeted respondents were categorized as either managers (IT, engineers, production, operations, logistics, sales, purchasing, etc.), supervisors (IT/technical/operational workers, etc.) in medium and large-sized enterprises (MLEs) in developing countries (Jordan, Lebanon, King Saudi Arabia, Bahrain, Qatar, Emirates, Egypt, Oman, Kuwait, and Turkey). The findings of this research indicate that RFID technology usage directly affects the integration with supply chain global positioning information system (SCGPIS) and SCP. Furthermore, SCGPIS achieves enhancing information sharing among supply chain partners, which in turn leads to enhancing SCP. This research paper offers empirical evidence for using RFID technology within the planning-resources of manufacturing enterprises' context for enhancing their SCP.</p>","PeriodicalId":46610,"journal":{"name":"Electronic Journal of Information Systems in Developing Countries","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135014310","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
Informing sustainable development in education: Identification and actualization of layered IS affordances 为教育的可持续发展提供信息:识别和实现分层的基础设施服务能力
IF 1.3
Electronic Journal of Information Systems in Developing Countries Pub Date : 2023-09-15 DOI: 10.1002/isd2.12302
Bjørnar Valbø, Terje Aksel Sanner
{"title":"Informing sustainable development in education: Identification and actualization of layered IS affordances","authors":"Bjørnar Valbø,&nbsp;Terje Aksel Sanner","doi":"10.1002/isd2.12302","DOIUrl":"10.1002/isd2.12302","url":null,"abstract":"<p>This paper reports from a qualitative case study in the Gambian education sector. The study applies an affordance perspective to the ongoing strengthening of the national education management information system. Our analysis distinguishes between micro-level technology-use affordances (e.g., civil servants using IT for data capture and reporting), meso-level information system (IS) affordances (e.g., data-driven decision making at the organizational level), and macro-level affordances, which include policy interventions to ensure the attainment of education sector goals. The contribution of the paper is twofold. First, the paper introduces a stepwise framework for IS affordance identification in terms of granularity levels (micro, meso and macro). Second, the paper outlines how use of IT at the micro-level allows for the actualization of meso-level IS affordances, which in turn serve as a foundation for the articulation of higher-level interventions. Far too often, ICT for development (ICT4D) projects focus on putting technology in the hands of users with the assumption that “better data” will drive development. The significant work involved in identifying and actualizing meso-level IS affordances is often not explicated and recognized in related plans and budgets. By highlighting meso-level IS affordance actualizations, the paper explicates the link between public sector IT adoption and use and intended societal-level impact, which remains a key policy and research concern.</p>","PeriodicalId":46610,"journal":{"name":"Electronic Journal of Information Systems in Developing Countries","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/isd2.12302","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135437606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Why do people use telecentres in the age of mobile technologies? Answers from Malawi 在移动技术时代,人们为什么使用电信中心?马拉维的回答
IF 1.3
Electronic Journal of Information Systems in Developing Countries Pub Date : 2023-09-14 DOI: 10.1002/isd2.12303
Sellina Khumbo Kapondera, Jim Mtambo
{"title":"Why do people use telecentres in the age of mobile technologies? Answers from Malawi","authors":"Sellina Khumbo Kapondera,&nbsp;Jim Mtambo","doi":"10.1002/isd2.12303","DOIUrl":"10.1002/isd2.12303","url":null,"abstract":"<p>Telecentres provide access to Information and Communication Technonology (ICT) services to disadvantaged communities. With the coming of mobile technologies such as smartphones, some services that telecentres provide such as internet can easily be accessed through mobile technologies. This, therefore, questions the relevance of telecentres in the age of mobile technologies. Two main questions exist: are telecentres still relevant? If yes, why do people still use telecentres in the age of mobile technologies? This paper aims at answering these questions. It also discusses the challenges that users face in using telecentres. Qualitative data were collected from telecentre users and managers of two telecentres in Malawi through focus groups and interviews. Gioia methodology was used to analyze the data. The study reveals four main reasons why people still patronize telecentres: (i) to socialize with fellow users; and (ii) that it is cheaper to access services in the telecentre as compared to using smartphones for the same services; (iii) telecentres provide services compatible with users' needs such as library services and computers; (iv) and to attain ICT skills some of which are applied in using smartphones. However, users face numerous challenges such as limited space within telecentres and unreliable power. The study is valuable as it provides insights into why governments should continue investing in telecentres. It also comes at a right time when the government of Malawi plans to abandon the community telecentre model to adopt the school managed model that may limit the number of users thereby limiting the benefits of telecentres in the presence of mobile technologies.</p>","PeriodicalId":46610,"journal":{"name":"Electronic Journal of Information Systems in Developing Countries","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134970716","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
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