Pub Date : 2007-09-01DOI: 10.1109/ELMAR.2007.4418840
M. Shirali-Shahreza, S. Shirali-Shahreza
In last 20 years, the Internet and mobile communication growth in parallel. There are many sites specially designed for mobile phones that users must enter username and password to enter them. In this paper we introduce a new method based on CAPTCHA which does not require entering any password. Instead of entering the password, an image of a number is shown to the user and he/she must type it. The user response is coded with his/her mobile phone IMEI and sent to the server. The server checks user's response according to user's IMEI and if it was correct, let the user to enter the site, so there is no need to enter any password. This method has been implemented in PHP andJ2ME languages and tested with a Nokia N71 phone.
{"title":"Passwordless login system for mobile phones using CAPTCHA","authors":"M. Shirali-Shahreza, S. Shirali-Shahreza","doi":"10.1109/ELMAR.2007.4418840","DOIUrl":"https://doi.org/10.1109/ELMAR.2007.4418840","url":null,"abstract":"In last 20 years, the Internet and mobile communication growth in parallel. There are many sites specially designed for mobile phones that users must enter username and password to enter them. In this paper we introduce a new method based on CAPTCHA which does not require entering any password. Instead of entering the password, an image of a number is shown to the user and he/she must type it. The user response is coded with his/her mobile phone IMEI and sent to the server. The server checks user's response according to user's IMEI and if it was correct, let the user to enter the site, so there is no need to enter any password. This method has been implemented in PHP andJ2ME languages and tested with a Nokia N71 phone.","PeriodicalId":170000,"journal":{"name":"ELMAR 2007","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134317550","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 : 2007-09-01DOI: 10.4018/978-1-60566-046-2.CH043
P. Podhradský, E. Mikóczy, Matejka Juraj, O. Labaj, R. Tomek
The evolution strategy of NGN laboratory towards the converged networks based on IP Multimedia Subsystem (IMS) as trends and aims for implementation of converged NGN network is presented in the article. This article describes actual implementation of NGN laboratory and future planned extensions and integration work for incorporating IMS core elements to our laboratory as unified service control subsystem. Existing NGN solution includes applications and our experiences with integrations of applications and their usability.
{"title":"Practical experience with new services and applications supported by NGN platform","authors":"P. Podhradský, E. Mikóczy, Matejka Juraj, O. Labaj, R. Tomek","doi":"10.4018/978-1-60566-046-2.CH043","DOIUrl":"https://doi.org/10.4018/978-1-60566-046-2.CH043","url":null,"abstract":"The evolution strategy of NGN laboratory towards the converged networks based on IP Multimedia Subsystem (IMS) as trends and aims for implementation of converged NGN network is presented in the article. This article describes actual implementation of NGN laboratory and future planned extensions and integration work for incorporating IMS core elements to our laboratory as unified service control subsystem. Existing NGN solution includes applications and our experiences with integrations of applications and their usability.","PeriodicalId":170000,"journal":{"name":"ELMAR 2007","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121200339","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 : 2007-09-01DOI: 10.1109/ELMAR.2007.4418789
Ismail Khalil Ibrahim
Summary form only given. Let us borrow this quote from the British humorist and cartoonist Ashleigh Brilliant to summarize the role of mobility in the development of the information society: "Unless you move, the place where you are is the place where you will always be". In more serious terms, new paradigms like pervasive and mobile computing clearly show a trend of using computing and communication power to overcome the physical limitations inherited from desktop computers. Technologies like wireless networks, ambient intelligence, mobile agents, miniaturized computing devices, embedded systems, etc., have enabled a plethora of new types of applications and services. However, usage statistics showed that there is still a huge gap between the potential of such services and their acceptance in practice. In this talk, we will explain and highlight the factors, trends, and issues on how to deploy and utilize mobile multimedia for the design, development and deployment of a content rich, user and business friendly, integrated network of autonomous, mobile agents. One of the major questions to be answered is how to enable the human users to cope with this omnipresence of information. We already observe in the "traditional" Web, how people are suffering from information overflow, receiving too much, the wrong, or even unwanted information. Personalization and adaptivity appear to be potential solutions to this problem but bear the risk of putting the user out of control. Approaches trying to overcome this conflict will be the focus of the presentation.
{"title":"Mobile multimedia: Bringing users into focus","authors":"Ismail Khalil Ibrahim","doi":"10.1109/ELMAR.2007.4418789","DOIUrl":"https://doi.org/10.1109/ELMAR.2007.4418789","url":null,"abstract":"Summary form only given. Let us borrow this quote from the British humorist and cartoonist Ashleigh Brilliant to summarize the role of mobility in the development of the information society: \"Unless you move, the place where you are is the place where you will always be\". In more serious terms, new paradigms like pervasive and mobile computing clearly show a trend of using computing and communication power to overcome the physical limitations inherited from desktop computers. Technologies like wireless networks, ambient intelligence, mobile agents, miniaturized computing devices, embedded systems, etc., have enabled a plethora of new types of applications and services. However, usage statistics showed that there is still a huge gap between the potential of such services and their acceptance in practice. In this talk, we will explain and highlight the factors, trends, and issues on how to deploy and utilize mobile multimedia for the design, development and deployment of a content rich, user and business friendly, integrated network of autonomous, mobile agents. One of the major questions to be answered is how to enable the human users to cope with this omnipresence of information. We already observe in the \"traditional\" Web, how people are suffering from information overflow, receiving too much, the wrong, or even unwanted information. Personalization and adaptivity appear to be potential solutions to this problem but bear the risk of putting the user out of control. Approaches trying to overcome this conflict will be the focus of the presentation.","PeriodicalId":170000,"journal":{"name":"ELMAR 2007","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115853607","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 : 2007-09-01DOI: 10.1109/ELMAR.2007.4418824
B. Tóth, G. Németh
Smart mobile devices support web technologies, audio and video playback, integrated extra features and 3rd party development beyond telephony. Multimodal user interfaces are favorable in mobile environments, when the traditional standard modality (keyboard and stylus) is supported by other modalities, primarily by speech input and output. Multimodality increases the usability of applications and makes them accessible for impaired persons, although creating multimodal interfaces on mobile devices is a challenging task. This paper investigates the main problems, briefly examines the upcoming issues of the graphical user interface and introduces the most important challenges of creating speech user interfaces on mobile devices. A new approach of creating multimodal, scaleable user interfaces for mobile devices is shortly discussed and some application scenarios are given, as well.
{"title":"Challenges of creating multimodal interfaces on mobile devices","authors":"B. Tóth, G. Németh","doi":"10.1109/ELMAR.2007.4418824","DOIUrl":"https://doi.org/10.1109/ELMAR.2007.4418824","url":null,"abstract":"Smart mobile devices support web technologies, audio and video playback, integrated extra features and 3rd party development beyond telephony. Multimodal user interfaces are favorable in mobile environments, when the traditional standard modality (keyboard and stylus) is supported by other modalities, primarily by speech input and output. Multimodality increases the usability of applications and makes them accessible for impaired persons, although creating multimodal interfaces on mobile devices is a challenging task. This paper investigates the main problems, briefly examines the upcoming issues of the graphical user interface and introduces the most important challenges of creating speech user interfaces on mobile devices. A new approach of creating multimodal, scaleable user interfaces for mobile devices is shortly discussed and some application scenarios are given, as well.","PeriodicalId":170000,"journal":{"name":"ELMAR 2007","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126200833","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 : 2007-09-01DOI: 10.1109/ELMAR.2007.4418835
N. Katevas, A. Pantelouka, K. Petrakou, S. Voliotis, T. Zahariadis
Visual sensor networks (VSN) are considered among the most demanding future mesh networks. Typical applications include surveillance, monitoring & discovery, remote control. In this paper, we set up a laboratory environment, using the DRK8080 wireless mobile animated head system, and a number of stationary nodes, in order to study the case of streaming in VSN. Concerning robot navigation, the VFF and VFH approaches are followed. Experimental results are provided for the comparison of the well-known routing algorithms AODVand OLSR as they apply to the VSN.
{"title":"Test environment for VSN routing algorithms using mobile robot","authors":"N. Katevas, A. Pantelouka, K. Petrakou, S. Voliotis, T. Zahariadis","doi":"10.1109/ELMAR.2007.4418835","DOIUrl":"https://doi.org/10.1109/ELMAR.2007.4418835","url":null,"abstract":"Visual sensor networks (VSN) are considered among the most demanding future mesh networks. Typical applications include surveillance, monitoring & discovery, remote control. In this paper, we set up a laboratory environment, using the DRK8080 wireless mobile animated head system, and a number of stationary nodes, in order to study the case of streaming in VSN. Concerning robot navigation, the VFF and VFH approaches are followed. Experimental results are provided for the comparison of the well-known routing algorithms AODVand OLSR as they apply to the VSN.","PeriodicalId":170000,"journal":{"name":"ELMAR 2007","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116895466","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 : 2007-09-01DOI: 10.1109/ELMAR.2007.4418819
B. Tomas, M. Maletić, Z. Raguž
People's coding and decoding of nonlinguistic speech attributes is usually subconscious with an enhanced psychological element and it brings spontaneousness, more information and beauty of speech act into the speech communication. Therefore, these attributes are extremely important within the human-machine speech communication. Emotions are definitely one of the most important nonlinguistic speech attributes. Each speaker's emotion forms vocal chords and vocal system that is acoustically shown through variations of the speech signal parameters. In this paper, the glottal speech during the pronouncing vowel /a/ has been analyzed. This is done by analyzing structure of pitch harmonics parameters for three emotional states: neutral, anger and speech under stress. The difference between structure pitch harmonics parameters of glottal speech is very informative about speaker's emotional state.
{"title":"Influence of Emotions to pitch harmonics parameters of vowel /a/","authors":"B. Tomas, M. Maletić, Z. Raguž","doi":"10.1109/ELMAR.2007.4418819","DOIUrl":"https://doi.org/10.1109/ELMAR.2007.4418819","url":null,"abstract":"People's coding and decoding of nonlinguistic speech attributes is usually subconscious with an enhanced psychological element and it brings spontaneousness, more information and beauty of speech act into the speech communication. Therefore, these attributes are extremely important within the human-machine speech communication. Emotions are definitely one of the most important nonlinguistic speech attributes. Each speaker's emotion forms vocal chords and vocal system that is acoustically shown through variations of the speech signal parameters. In this paper, the glottal speech during the pronouncing vowel /a/ has been analyzed. This is done by analyzing structure of pitch harmonics parameters for three emotional states: neutral, anger and speech under stress. The difference between structure pitch harmonics parameters of glottal speech is very informative about speaker's emotional state.","PeriodicalId":170000,"journal":{"name":"ELMAR 2007","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132774271","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 : 2007-09-01DOI: 10.1109/ELMAR.2007.4418804
T. Grigorie, D. Sandu
The paper presents a way to determining the attitude by numerical integration of the Poisson attitude quaternionic equation using a dedicated method suggested by Wilcox. The method is implemented in a Matlab/simulink S-function and simulated with the help of a model for different types of inputs. There is also presented an evaluation of attitude errors for applied inputs and their variation surfaces depending on the time and angular speed.
{"title":"On the attitude errors when the quaternionic Wilcox method is used","authors":"T. Grigorie, D. Sandu","doi":"10.1109/ELMAR.2007.4418804","DOIUrl":"https://doi.org/10.1109/ELMAR.2007.4418804","url":null,"abstract":"The paper presents a way to determining the attitude by numerical integration of the Poisson attitude quaternionic equation using a dedicated method suggested by Wilcox. The method is implemented in a Matlab/simulink S-function and simulated with the help of a model for different types of inputs. There is also presented an evaluation of attitude errors for applied inputs and their variation surfaces depending on the time and angular speed.","PeriodicalId":170000,"journal":{"name":"ELMAR 2007","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124699848","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 : 2007-09-01DOI: 10.1109/ELMAR.2007.4418828
Zlatan Begi, Melika Boli, Himzo Bajri
In 1990, Deering proposed IP multicast - an extension to the IP unicast service model for efficient multipoint communication. The multicast service model offered two key benefits: the efficient use of bandwidth for multipoint communication and the indirection of a group address which allows for network-level rendezvous and service discovery. This work describes a statistical analysis model that was used to compare the bandwidth used for distributed versus centralized multicast replication. The analysis uses probability to determine the amount of bandwidth that would be needed to serve a population of subscribers using a broadcast TV service. Because the maximum expected use of the broadcast service as a percentage of video subscribers (broadcast peak take rate) is typically much higher than that for the VoD service, the amount of bandwidth that is needed for broadcast and VoD services can be much higher when the broadcast service is delivered as unicast streams rather than by means of distributed replication.
{"title":"Centralized versus distributed replication model for multicast replication","authors":"Zlatan Begi, Melika Boli, Himzo Bajri","doi":"10.1109/ELMAR.2007.4418828","DOIUrl":"https://doi.org/10.1109/ELMAR.2007.4418828","url":null,"abstract":"In 1990, Deering proposed IP multicast - an extension to the IP unicast service model for efficient multipoint communication. The multicast service model offered two key benefits: the efficient use of bandwidth for multipoint communication and the indirection of a group address which allows for network-level rendezvous and service discovery. This work describes a statistical analysis model that was used to compare the bandwidth used for distributed versus centralized multicast replication. The analysis uses probability to determine the amount of bandwidth that would be needed to serve a population of subscribers using a broadcast TV service. Because the maximum expected use of the broadcast service as a percentage of video subscribers (broadcast peak take rate) is typically much higher than that for the VoD service, the amount of bandwidth that is needed for broadcast and VoD services can be much higher when the broadcast service is delivered as unicast streams rather than by means of distributed replication.","PeriodicalId":170000,"journal":{"name":"ELMAR 2007","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126710730","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 : 2007-09-01DOI: 10.1109/ELMAR.2007.4418818
J. Vojtko, J. Kacur, G. Rozinaj
In the submitted paper we present the training process of HMM models that are designed to be used in ASR systems employed in GSM networks. First a brief overview regarding the current problems and applications of ASR systems is given, followed by the description of MOBILDAT-SK speech database and the SPHINX 4 and SphitixTrain capabilities. Then the process of HMM models training is presented utilizing the facility of the SphinxTrain system adjusted for the structure of MOBILDAT database and the Slovak language. The article is concluded by presenting the achieved results using the tools of the SHINX 4 by the means of 3 types of tests: application words, isolated digits, and looped digits. The WER for the looped digits and CD phoneme models is 1.8% which is roughly comparable to the performance of other systems.
{"title":"The training of Slovak speech recognition system based on Sphinx 4 for GSM networks","authors":"J. Vojtko, J. Kacur, G. Rozinaj","doi":"10.1109/ELMAR.2007.4418818","DOIUrl":"https://doi.org/10.1109/ELMAR.2007.4418818","url":null,"abstract":"In the submitted paper we present the training process of HMM models that are designed to be used in ASR systems employed in GSM networks. First a brief overview regarding the current problems and applications of ASR systems is given, followed by the description of MOBILDAT-SK speech database and the SPHINX 4 and SphitixTrain capabilities. Then the process of HMM models training is presented utilizing the facility of the SphinxTrain system adjusted for the structure of MOBILDAT database and the Slovak language. The article is concluded by presenting the achieved results using the tools of the SHINX 4 by the means of 3 types of tests: application words, isolated digits, and looped digits. The WER for the looped digits and CD phoneme models is 1.8% which is roughly comparable to the performance of other systems.","PeriodicalId":170000,"journal":{"name":"ELMAR 2007","volume":"515 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116821306","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 : 2007-09-01DOI: 10.1109/ELMAR.2007.4418844
K. Benkič, P. Planinsic, Z. Cucej
Wireless sensor networks have been very popular research field for the last couple of years. Many wireless sensor network researches are done on simulations and theoretical predictions instead of practical implementations, measurements and tests. With the interest of combining simulation results and theory with practical implementation we started building our own sensor network called "WiRsE". WiRsE is a Wireless Remote Sensor network based on ZigBee platform. Sensor network provides capability of temperature and moisture measurement in two flours of the Faculty building. Sensor Network can be accessed locally or remotely (over GSM phone). WiRsE is mainly designed for education demonstrations and testing different topology controls. In this article a minimum spanning tree algorithm for topology implementation is described.
{"title":"Custom wireless sensor network based on ZigBee","authors":"K. Benkič, P. Planinsic, Z. Cucej","doi":"10.1109/ELMAR.2007.4418844","DOIUrl":"https://doi.org/10.1109/ELMAR.2007.4418844","url":null,"abstract":"Wireless sensor networks have been very popular research field for the last couple of years. Many wireless sensor network researches are done on simulations and theoretical predictions instead of practical implementations, measurements and tests. With the interest of combining simulation results and theory with practical implementation we started building our own sensor network called \"WiRsE\". WiRsE is a Wireless Remote Sensor network based on ZigBee platform. Sensor network provides capability of temperature and moisture measurement in two flours of the Faculty building. Sensor Network can be accessed locally or remotely (over GSM phone). WiRsE is mainly designed for education demonstrations and testing different topology controls. In this article a minimum spanning tree algorithm for topology implementation is described.","PeriodicalId":170000,"journal":{"name":"ELMAR 2007","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130860720","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：