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2017 25th Telecommunication Forum (TELFOR)最新文献

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nutIE — A modern open source natural language processing toolkit nutIE -一个现代的开源自然语言处理工具包
2017 25th Telecommunication Forum (TELFOR) Pub Date : 2017-11-01 DOI: 10.1109/TELFOR.2017.8249486
Slavko Žitnik, D. Drašković, B. Nikolić, M. Bajec
{"title":"nutIE — A modern open source natural language processing toolkit","authors":"Slavko Žitnik, D. Drašković, B. Nikolić, M. Bajec","doi":"10.1109/TELFOR.2017.8249486","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249486","url":null,"abstract":"Nowadays, there are many tools and applications available that use novel machine learning algorithms, but only few tools exist that bridge the gap between the computer scientists and general public. The latter especially holds for the field of natural language processing. Therefore in this paper we present a new information extraction toolkit, called nutIE, that offers a frontend for end-to-end text analysis using a modern javascript-based web application. The core of the toolkit includes all the high-level information extraction techniques with supporting preprocessing and evaluation methods. All these can be accessed by a Scala programmatic API or an arbitrary third-party application via REST interface. It has already been shown that the integrated toolkit's algorithms achieve state-of-the art results. The toolkit is currently applied at international text processing projects and courses.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126907639","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: 3
An analysis of hierarchical multi-hop routing protocols for large wireless sensor networks 大型无线传感器网络分层多跳路由协议分析
2017 25th Telecommunication Forum (TELFOR) Pub Date : 2017-11-01 DOI: 10.1109/TELFOR.2017.8249323
Srđan D. Misailović, Tatjana Nikolić, G. Markovic
{"title":"An analysis of hierarchical multi-hop routing protocols for large wireless sensor networks","authors":"Srđan D. Misailović, Tatjana Nikolić, G. Markovic","doi":"10.1109/TELFOR.2017.8249323","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249323","url":null,"abstract":"Wireless sensor networks represent technology for networking of sensor devices, as well as for other devices in IoT systems. The hierarchical routing protocols have many advantages when these networks are used in monitoring applications, with the energy efficient hierarchical multi-hop routing proposed for large scale networks that assures reliable data gathering in the non-ideal connectivity conditions. We here propose a modification of our previously designed multi-hop routing concept by employing clustering algorithm from HEED protocol in order to achieve uniformly placed clusters. The conducted analysis for several multi-hop protocols showed good performance of here proposed solution for ideal and non-ideal network connectivity.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126297354","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
Characterization of nonlinearities in a class-J power amplifier j类功率放大器非线性特性的研究
2017 25th Telecommunication Forum (TELFOR) Pub Date : 2017-11-01 DOI: 10.1109/TELFOR.2017.8249305
B. Bukvic, M. Ilić
{"title":"Characterization of nonlinearities in a class-J power amplifier","authors":"B. Bukvic, M. Ilić","doi":"10.1109/TELFOR.2017.8249305","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249305","url":null,"abstract":"We characterize the nonlinearities of a novel 10 W class-J power amplifier (PA) with a carrier at 1.5 GHz. We employ both numerical simulations and real time adjacent channel power ratio (ACPR) measurements on a fabricated prototype. The measurements are performed for a wideband code division multiple access (WCDMA) signal with 10.5 dB peak-to-average power ratio (PAPR) and 3.84 MHz bandwidth. For a 31.4 dBm modulated output power, the measured ACPR in the lower and upper adjacent channels was 37.89 dBc and 36.82 dBc, respectively, without predistortion.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"80-81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126639259","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
Hybrid-loop controlled solar tracker for hybrid solar energy harvester 用于混合太阳能采集器的混合回路控制太阳能跟踪器
2017 25th Telecommunication Forum (TELFOR) Pub Date : 2017-11-01 DOI: 10.1109/TELFOR.2017.8249413
S. Bularka, A. Gontean
{"title":"Hybrid-loop controlled solar tracker for hybrid solar energy harvester","authors":"S. Bularka, A. Gontean","doi":"10.1109/TELFOR.2017.8249413","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249413","url":null,"abstract":"Solar energy is one of the most abundant renewable energy sources that can be utilized to provide both electrical and thermal power. PV cells have seen great efficiency improvements in the past years, furthermore according to Swanson's law PV cells become more and more affordable, but a lot of obstacles in effective utilization are still present. Energy harvesting systems with solar tracker can obtain significant improvement in solar energy exposure in comparison with static systems. The aim of this paper is to investigate the efficiency improvement given by a dual axis automated solar tracker and the maintenance and evaluation benefits of a real-time monitoring system.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127763826","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
Applicability of the ECGalert solution ECGalert解决方案的适用性
2017 25th Telecommunication Forum (TELFOR) Pub Date : 2017-11-01 DOI: 10.1109/TELFOR.2017.8249437
M. Gusev, L. Poposka, E. Guseva
{"title":"Applicability of the ECGalert solution","authors":"M. Gusev, L. Poposka, E. Guseva","doi":"10.1109/TELFOR.2017.8249437","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249437","url":null,"abstract":"Wireless ECG patches have been extensively used for long-term monitoring of the patient and to help detect heart problems that cannot be captured within 24h monitoring. In this paper, we present how the ECGalert technology has successfully been used to detect serious heart problems as a long-term monitoring device. We present the features of the solution and a use case of applicability.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129189801","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
Expert system for infrared heating panel optimization 红外加热板优化专家系统
2017 25th Telecommunication Forum (TELFOR) Pub Date : 2017-11-01 DOI: 10.1109/telfor.2017.8249461
D. Lacrama, F. Alexa, F. A. Pintea, Paul G. Zinca
{"title":"Expert system for infrared heating panel optimization","authors":"D. Lacrama, F. Alexa, F. A. Pintea, Paul G. Zinca","doi":"10.1109/telfor.2017.8249461","DOIUrl":"https://doi.org/10.1109/telfor.2017.8249461","url":null,"abstract":"This paper is focused on the development of an expert system able to add flexibility to the residential building heating system The proposed solution is adjusted to the Infrared Heating Panel's technology but it can be adapted also for other heating devices. The experimental results prove that our method can improve life quality and also reduce consumption.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129148014","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
Key aspects of narrow band internet of things communication technology driving future IoT applications 窄带物联网通信技术驱动未来物联网应用的关键方面
2017 25th Telecommunication Forum (TELFOR) Pub Date : 2017-11-01 DOI: 10.1109/TELFOR.2017.8249327
A. Rakic, I. Popović, I. Petruševski, Đorđe Begenišić, V. Spajić, Miriam Rakić
{"title":"Key aspects of narrow band internet of things communication technology driving future IoT applications","authors":"A. Rakic, I. Popović, I. Petruševski, Đorđe Begenišić, V. Spajić, Miriam Rakić","doi":"10.1109/TELFOR.2017.8249327","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249327","url":null,"abstract":"Narrow Band (NB) Internet of Things (IoT) technology enables integration of low power devices into future Internet of Things. In this paper, both the intended technology benefits and the available solutions for IoT connectivity are analyzed in order to fully utilize the NB-IoT potential. Although existing connectivity solutions support reliable communication, they have to be adapted or upgraded in order to fulfill the requirements of IoT end-devices in the aspect of energy efficient two-way end-to-end communication. The basic remote sensing application using NB-IoT connectivity is presented in the form of the case study to support such claim.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129190057","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
Solar storm detecting by integrated magnetometer based on anisotropic magnetoresistivity 基于各向异性磁电阻率的集成磁强计探测太阳风暴
2017 25th Telecommunication Forum (TELFOR) Pub Date : 2017-11-01 DOI: 10.1109/TELFOR.2017.8249414
J. Široký
{"title":"Solar storm detecting by integrated magnetometer based on anisotropic magnetoresistivity","authors":"J. Široký","doi":"10.1109/TELFOR.2017.8249414","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249414","url":null,"abstract":"This paper deals with the geomagnetic field measurement by integrated sensor based on principle of anisotropic magnetoresistivity (AMR). The geomagnetic field measurements require very precise instrumentation which is mostly spacious. On the other hand, the chosen magnetometer — HMC5883L — is very tiny but suffers from lower resolution and high noise floor. The objective is to examine possibility of geomagnetism investigation made by an integrated widespread magnetometer, to evaluate its precision and to detect some outer space events by geomagnetism observations. There was proposed and constructed measuring device including AMR chip. The measuring device including the AMR chip was proposed and produced. A long-term measurement was recorded in collaboration with the geomagnetic observatory Budkov, Czech Republic (Institute of Geophysics of the CAS, v. v. i.; INTERMAGNET). The post-processing was designed in order to suppress sensor noise and temp-drift. The post-processing used was standardized by INTERMAGNET especially for geomagnetic observatories. Finally, with the constructed device there were detected the day-night variations of the Earth magnetic field and a solar storm of 4th grade of k-index.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121348932","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
First path component power based NLOS mitigation in UWB positioning system 基于第一路径分量功率的超宽带定位系统NLOS抑制
2017 25th Telecommunication Forum (TELFOR) Pub Date : 2017-11-01 DOI: 10.1109/TELFOR.2017.8249313
Marcin Kołakowski, J. Modelski
{"title":"First path component power based NLOS mitigation in UWB positioning system","authors":"Marcin Kołakowski, J. Modelski","doi":"10.1109/TELFOR.2017.8249313","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249313","url":null,"abstract":"The paper describes an NLOS (Non-Line-of-Sight) mitigation method intended for use in a UWB positioning system. In the proposed method propagation conditions between the localized objects and the anchors forming system infrastructure are classified into one of three categories: LOS (Line-of-Sight), NLOS and severe NLOS. Non-Line-of-Sight detection is conducted based on first path signal component power measurements. For each of the categories, average NLOS inducted time of arrival bias and bias standard deviation have been estimated based on results gathered during a measurement campaign conducted in a fully furnished apartment. To locate a tag, an EKF (Extended Kalman Filter) based algorithm is used. The proposed method of NLOS mitigation consists in correcting measurement results obtained in NLOS conditions and lowering their significance in a tag position estimation process. The paper includes the description of the method and the results of the conducted experiments.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115388386","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: 10
Analysis of the influence of the inducational character elements on the reduction of harmonics 感应特性元素对谐波抑制的影响分析
2017 25th Telecommunication Forum (TELFOR) Pub Date : 2017-11-01 DOI: 10.1109/TELFOR.2017.8249373
S. Bjelić, Z. Bogićević, N. Milenkovic
{"title":"Analysis of the influence of the inducational character elements on the reduction of harmonics","authors":"S. Bjelić, Z. Bogićević, N. Milenkovic","doi":"10.1109/TELFOR.2017.8249373","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249373","url":null,"abstract":"On smoothing or reduction in the harmonic filters with inductive character elements (or elements that are part of ballasts to limit the current in the circuits), is influenced by their mutual inductance of the windings are often laid along the same magnetic circuit. In addition to the analysis carried out by the T scheme filter function with respect to the influence of mutual induktivity on L filter parameters elements, the paper presents suggestions on how to ensure greater efficiency of the filter.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114290590","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
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