Int. J. Handheld Comput. Res.最新文献_第4页

Coherent Passive Backscatter Communications Using Ambient Transmitters 使用环境发射机的相干无源后向散射通信

Int. J. Handheld Comput. Res. Pub Date : 2014-04-01 DOI: 10.4018/ijhcr.2014040102

W. Barott, Kevin M. Scott

引用次数: 3

Illustration of Centralized Command and Control for Flocking Behavior 群集行为的集中指挥与控制实例

Int. J. Handheld Comput. Res. Pub Date : 2014-04-01 DOI: 10.4018/ijhcr.2014040101

Sami Oweis, S. Ganesan, K. Cheok

引用次数: 2

A Piecewise Linear Time-Varying Model for Modeling the Charging and Discharging Processes of a Lithium-Ion Battery 锂离子电池充放电过程的分段线性时变模型

Int. J. Handheld Comput. Res. Pub Date : 2014-04-01 DOI: 10.4018/ijhcr.2014040106

Arab AlSharif, M. Das

引用次数: 1

Heuristic Based User Interface Evaluation of Mobile Money Application: A Case Study 基于启发式的移动支付应用用户界面评价:一个案例研究

Int. J. Handheld Comput. Res. Pub Date : 2014-04-01 DOI: 10.4018/ijhcr.2014040105

B. Kumar, Shamina Hussein

引用次数: 11

Ubiquity and Context-Aware M-Learning Model: A Mobile Virtual Community Approach 无处不在和上下文感知移动学习模型:一种移动虚拟社区方法

Int. J. Handheld Comput. Res. Pub Date : 2014-01-01 DOI: 10.4018/ijhcr.2014010104

Mohammad M. Alnabhan

{"title":"Ubiquity and Context-Aware M-Learning Model: A Mobile Virtual Community Approach","authors":"Mohammad M. Alnabhan","doi":"10.4018/ijhcr.2014010104","DOIUrl":"https://doi.org/10.4018/ijhcr.2014010104","url":null,"abstract":"This paper presents a new adaptive m-learning model supporting collaborative and context-aware learning. A seamless integration between learners' location information and a set of associated learning context dimensions is used to facilitate the provision of pervasive and ubiquitous learning services. The new model adopts nearest search algorithm in order to group spatially related mobile learners, constructing learning-oriented virtual communities and achieving a collaborative learning experience. The presented model implements two virtual community construction modes, described as client-based and server-based collaboration modes. A preliminary evaluation methodology was conducted, measuring the successful implementation of the proposed new model, and confirming the establishment of the virtual community after considering a set of learning context dimensions; such as learning collaboration type, learning style and learners' location information. Results have confirmed that both collaboration modes were successful in establishing the virtual communities between mobile learners. However, the server-based mode was more scalable than client-based mode while handling the increased number of mobile peers, in which less response time was experienced and a smaller learning grid area was formed.","PeriodicalId":265963,"journal":{"name":"Int. J. Handheld Comput. Res.","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123064526","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

Using Communication Frequency and Recency Context to Facilitate Mobile Contact List Retrieval 利用通信频率和最近时间上下文方便移动联系人列表检索

Int. J. Handheld Comput. Res. Pub Date : 2013-10-01 DOI: 10.4018/ijhcr.2013100104

A. Plessas, V. Stefanis, Andreas Komninos, J. Garofalakis

引用次数: 10

LTE Cellular Network Planning for Urban Area 城市LTE蜂窝网络规划

Int. J. Handheld Comput. Res. Pub Date : 2013-10-01 DOI: 10.4018/ijhcr.2013100102

M. Ahamed, Zahirul Islam, S. Hossain, S. Faruque

引用次数: 3

Interference Modeling and Analysis in Cognitive Radio Networks 认知无线电网络中的干扰建模与分析

Int. J. Handheld Comput. Res. Pub Date : 2013-10-01 DOI: 10.4018/ijhcr.2013100101

Yanxiao Zhao, B. Panigrahi, K. Sohraby, Wei Wang

{"title":"Interference Modeling and Analysis in Cognitive Radio Networks","authors":"Yanxiao Zhao, B. Panigrahi, K. Sohraby, Wei Wang","doi":"10.4018/ijhcr.2013100101","DOIUrl":"https://doi.org/10.4018/ijhcr.2013100101","url":null,"abstract":"Cognitive radio networks CRNs have received considerable attention and viewed as a promising paradigm for future wireless networking. Its major difference from the traditional wireless networks is that secondary users are allowed to access the channel if they pose no harmful interference to primary users. This distinct feature of CRNs has raised an essential and challenging question, i.e., how to accurately estimate interference to the primary users from the secondary users? In addition, spectrum sensing plays a critical role in CRNs. Secondary users have to sense the channel before they transmit. A two-state sensing model is commonly used, which classifies a channel into either busy or idle state. Secondary users can only utilize a channel when it is detected to be in idle state. In this paper, we tackle the estimation of interference at the primary receiver due to concurrently active secondary users. With the spectrum sensing, secondary users are refrained from transmitting once an active user falls into their sensing range. As a result, the maximum number of simultaneously interfering secondary users is bounded, typically ranging from 1 to 4. This significant conclusion considerably simplifies interference modeling in CRNs. The authors present all the cases with possible simultaneously interfering secondary users. Moreover, the authors derive the probability for each case. Extensive simulations are conducted and results validate the effectiveness and accuracy of the proposed approach.","PeriodicalId":265963,"journal":{"name":"Int. J. Handheld Comput. Res.","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114440462","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: 4

Toward an RFID Scheme for Secure Material Flow Tracing and Verification in Supply Chains 供应链中安全物料流追踪与验证的RFID方案研究

Int. J. Handheld Comput. Res. Pub Date : 2013-10-01 DOI: 10.4018/ijhcr.2013100105

Yanjun Zuo

引用次数: 4

GSM-Based Positioning Technique Using Relative Received Signal Strength 基于相对接收信号强度的gsm定位技术

Int. J. Handheld Comput. Res. Pub Date : 2013-10-01 DOI: 10.4018/ijhcr.2013100103

M. H. A. Meniem, A. Hamad, E. Shaaban

引用次数: 8