• Asian Journal for Public Opinion Research
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• 제9권3호
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• pp.293-306
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• 2021

The news and views of Pakistani television channels are extensively shared on digital media for information or analysis where the general public discusses overt and covert agendas by mentioning their factual and presentational style. This study contributes to the contemporary studies of media perception through focus group interviews with 72 randomly selected master's and bachelor's students studying Media and Communication at the School of Media and Communication Studies, University of Management and Technology, Lahore, Pakistan to provide information about the feelings and observations of future journalists and media literates. In summary, the findings of our research exposed the negative perception of Pakistani electronic media among the participants due to what they perceived as biased, inaccurate, and unethical reporting.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권7호
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• pp.3329-3350
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• 2017

Installing caching and computing facilities in mobile edge networks is a promising solution to cope with the challenging capacity and delay requirements imposed on future mobile communication systems. The problem of optimal facility placement in mobile edge networks has not been fully studied in the literature. This is a non-trivial problem because the mobile edge network has a unidirectional topology, making existing solutions inapplicable. This paper considers the problem of optimal placement of a fixed number of facilities in a mobile edge network with an arbitrary tree topology and an arbitrary demand distribution. A low-complexity sequential algorithm is proposed and proved to be convergent and optimal in some cases. The complexity of the algorithm is shown to be $O(H^2{\gamma})$, where H is the height of the tree and ${\gamma}$ is the number of facilities. Simulation results confirm that the proposed algorithm is effective in producing near-optimal solutions.

• Journal of information and communication convergence engineering
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• 제13권4호
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• pp.241-247
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• 2015

Cognitive radio has been attracting increased attention as an effective approach to improving spectrum efficiency. One component of cognitive radio, spectrum sensing, has an important relationship with the performance of cognitive radio. In this paper, after a summary and analysis of the existing spectrum-sensing algorithms, we report that the existing eigenvalue-based semi-blind detection algorithm and blind detection algorithm have not made full use of the eigenvalues of the received signals. Applying multi-antenna systems to cognitive users, we design a variety of spectrum-sensing algorithms based on the joint distribution of the eigenvalues of the received signal. Simulation results validate that the proposed algorithms in this paper are able to detect whether the signal of the primary user exists or not with high probability of detection in an environment with a low signal-to-noise ratio. Compared with traditional algorithms, the new algorithms have the advantages of high detection performance and strong robustness

• 한국정보전자통신기술학회논문지
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• 제7권4호
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• pp.159-167
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• 2014

Local device-to-device (D2D) communication between two smart mobile devices is becoming increasingly popular. The first key step in starting a D2D communication is to discover and identify the remote target device to establish a link. However, existing device discovery mechanisms either require users to explicitly identify the ID of the target device or rely on inaccurate beamforming technology. This paper presents two novel device identification algorithms using a variety of embedded sensors. The algorithms only require that users to point two devices towards each other. This paper describes the algorithms, analyzes their accuracy using analytical models, and verifies the results using simulations.

• 한국컴퓨터정보학회논문지
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• 제24권6호
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• pp.89-97
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• 2019

This study proposes a method for investigating current patents related to information communication technology and smart mobility to provide insights into future technology trends. The method is based on text mining clustering analysis. The method consists of two stages, which are data preparation and clustering analysis, respectively. In the first stage, tokenizing, filtering, stemming, and feature selection are implemented to transform the data into a usable format (structured data) and to extract useful information for the next stage. In the second stage, the structured data is partitioned into groups. The K-medoids algorithm is selected over the K-means algorithm for this analysis owing to its advantages in dealing with noise and outliers. The results of the analysis indicate that most current patents focus mainly on smart connectivity and smart guide systems, which play a major role in the development of smart mobility.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -2
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• pp.747-750
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• 2002

A circuit building block for realizing a continuous-time active-only current-mode integrator is presented. The proposed integrator is composed only of internally compensated type operational amplifier (OA) and operational transconductance amplifiers (OTAs). The integrator is suitable for integrated circuit implementation in either bipolar or CMOS technologies, since it does not require any external passive elements. Moreover, the integrator gain can be tuned through the transconductance gains of the OTAs. Some application examples in the realization of current-mode network functions using the proposed current-mode integrator as an active element are also given.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 심포지엄 논문집 정보 및 제어부문
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• pp.242-243
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• 2008

사다리꼴 역기전력을 갖는 BLDC 전동기 제어는 구형파 전류를 인가함으로서 DC 모터와 같은 제어를 할 수 있어 많은 응용 분야에 사용되고 있다. 구형파 전류를 인가하기 위하여 연구된 PWM방식을 분석해 보면 몇 가지 문제점을 가지고 있다. 기존의 연구내용으로는 유니폴라 PWM방법, 바이폴라 PWM 방법, 하이브리드 PWM 방법이 있으나 PWM을 정확히 분석해보면 원하는 전압을 인가할 수 없는 부분이 있음을 알 수 있다. 특히 방향을 바꾸는 시점이나 속도를 급격히 줄이는 부분에서는 원하는 전압이 인가되지 않음을 알 수 있다. 본 논문에서는 이러한 문제점을 분석하고 정확한 전압이 인가될 수 있는 방법을 제안한다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.442-442
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• 2000

The intelligent auto-tuning method fur a strongly stable adaptive control system of a DC motor with great load inertia variation is proposed. The stable characteristic polynomial that is designed by an optimal servo is specified for the adaptive pole placement control system. The appropriate adaptive control system can be derived, by adjusting automatically the weight of a performance criterion in optimal control by means of the fuzzy inference on the basis of the stability index.

• 공학논문집
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• 제5권1호
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• pp.5-16
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• 2004

컴퓨터 통신이 보조통신 수단에서 주 통신 수단으로 변하고 있는 지금 메신저는 그 선두에 서있다. 꿈이라 생각 했던 얼굴을 보면서 대화 한다는 것이 컴퓨터를 통해 이루어 졌다. 이 두 가지 기능을 합쳐 놓은 것이 멀티 메신저이다. 이 논문에서 구현된 멀티메신저는 기존의 메신저들과 경쟁력을 두기 위하여 각각 차세대 언어라 할 수 있는 .NET 와 강력한 MFC을 사용하였다. 또한 메신저 기능뿐 만이 아니라 화상 채팅 기능을 포함했다.

• 한국전자통신학회논문지
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• 제16권4호
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• pp.755-762
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• 2021

본 연구는 남해안지역 진출을 위한 거점항만으로서의 마산항이 경제의 중추적 역할을 담당하기 위해 마산지역항의 해양 정보통신기술의 활용방안을 위한 연구로 기존의 마산항만의 현황과 적용중인 ICT를 바탕으로 중장기적으로 추구해야 할 해양 정보화 기술의 활용에 대하여 살펴보고자 한다.