• Journal of Korea Game Society
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• v.9 no.2
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• pp.29-39
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• 2009

Game scenarios are playing more important role as much as games are getting more sophisticated and expanded in their applications. However, general-purpose tools for production of game scenarios are still not developed. There are similar tools for the production of films or dramas and simple tools for the development of UCG. However, analysis about them shows that they are not suitable for the production of game scenarios. In this paper, we are to develop game scenario authoring tool called 'UMa' suitable for game production and easy to use. UMa is composed of synopsis entry, quest entry, DB entry, communication, display, and control component. Since UMa provides templates to make synopsis, quest, and DB, users can produce them very easily. Especially, characters and items DB are stored independently so that they may be reused to the production of scenarios for follow-up or another game. Using UMa, users can write game scenarios more easily and quickly and cooperate with each other at the same time by Web.

• Journal of Astronomy and Space Sciences
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• v.28 no.2
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• pp.109-116
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• 2011

The first presented BV light curves of BH UMa confirmed Krajci's (2005) result that BH UMa is an RR Lyr star that belongs to the RRc subgroup. The light curves showed a slight asymmetry of D = 0.453 with an amplitude of about $0.^m58$ in B, $0.^m47$ in V, and $0.^m11$ in B-V and with a small hump between $0.^p82$ and $0.^p86$. We determined nine new times of minimum light and eight times of maximum light. We also analyzed all of the available unanalyzed minimum timings and found for the first time that the period of BH UMa has varied dramatically in at least three independent sinusoidal ways superposed on a secularly downward parabola over 66 years. The secular period decreasing rate was obtained as $6.^d684{\times}10^{-8}y^{-1}$, corresponding to -0.58 s/century. The semi-amplitude and period for each of the three sinusoidal variations were ($0.^d058$, $14.^y44$), ($0.^d044$, $9.^y98$), and ($0.^d005$, $0.^y97$), respectively. It is uncertain whether the periodicity for the shortest period of $0.^y97$ is real or spurious. The secular period decrease, well consistent with those of the other RRc stars, could be considered as a natural result of the evolution of the BH UMa system. The two possible sinusoidal terms were interpreted as both two light-time effects due to two additional bodies orbiting BH UMa and combinations of random fluctuations in the pulsation period of BH UMa. Two interpretations were shortly discussed with related parameters.

• 정보화사회
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• s.182
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• pp.16-17
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• 2006

현재 UMA 단말을 제공하고 있는 곳은 삼성전자.노키아.모토로라 등 3사뿐이다. 서비스 사업자와 단말 제조업자간 신경전이 약간 섞여 있기 때문이다. 새로운 기술이 등장할 때 항상 벌어지는 일로, 사업자측은 단말기 선출시를 요구하고, 단말 제조사는 서비스 시작을 강요하는 불협화음 말이다. 이 불협화음에도 불구하고 업계에서는 내년 초까지 6개 정도 업체가 UMA 단말 시장에 진출할 것으로 예상하고 있다. 업계에서는 FMC 단말기가 중저가형이어야 한다고 주장한다. 가격이 높으면 사용자들이 새로운 단말기를 구입하기에 부담스럽다는 이유이다.

• Journal of Astronomy and Space Sciences
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• v.15 no.1
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• pp.65-68
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• 1998

We construct the X-ray light curves of the W UMa type contact binary SS Arietis(HD12929) from the EXOSAT data in HEASARC data archive. The phase dependent X-ray light curves obtained by using the ephimeris of Kaluzny & Pojmanski of SS Ari is modulated on the orbital phase as in the case of other W UMa type binaries. Although a detailed analysis of these data is impossible because of the very low X-ray light curves in the context of the radiation in the corona region of W UMa type stars.

• The Bulletin of The Korean Astronomical Society
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• v.26 no.2
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• pp.45-45
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• 2001

• Journal of Advanced Navigation Technology
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• v.12 no.3
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• pp.239-244
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• 2008

In this paper refer to the digital multimedia mobile phone with the combination of broadcasting and the communication the unity of wire and wireless solution that can provide the UMA(Unlicensed Mobile Access) function is added. In UNC(Universal Naming Convention) in the case of CAS(Conditional Access System) is supported, the device(mobile phone) is authenticated through AP and then following the method of broadcasting signal the user can view the wanted contents as long as they want and for this matter the service charge system are proposed.

• The KIPS Transactions:PartC
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• v.16C no.1
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• pp.125-132
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• 2009

The pre-generated web contents or various devices have to be used in order to execute UMA(UMA:Universal Multimedia Access). However, an HTLM web page for PC is not very compatible with wireless internet because of its unnecessary advertisements, high resolution, and various multimedia data. This is because the main focus when creating it was on high speed. In this paper indicates with the RSS channel, converted from the main part of the HTML web page, which users show interest in, a wireless compatible internet page can easily be created. Consequently, web administrators could create a wireless page easily and quickly, and wireless users would be able to find information in the same manner.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.26 no.8
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• pp.748-757
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• 2015

MIMO systems utilizing multiple antenna transmission and reception is one of the key technologies to enhance the capacity of 5G wireless communications. In order to obtain an appropriate performance evaluation of MIMO techniques, the usage of wireless channel model reflecting spatial channel characteristics is required, such as the 3-dimensional spatial channel model(3D SCM) proposed by 3GPP TR36.873 documentation. In this paper, we implement and verify the channel simulation environment based on 3D SCM, to present and compare the characteristics of UMi and UMa environments. We also apply MIMO transmission to the UMa scenario to investigate the channel correlation among antenna elements with different array distances and to identify the corresponding throughput changes. By evaluating the channel power correlations for randomly distributed users within the sector for different horizontal and vertical antenna distances, we present the statistical characteristics which determine the transmission performance under the SCM environment.

• Journal of The Korean Astronomical Society
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• v.38 no.2
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• pp.43-57
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• 2005

The authors have assembled a sample of 80 W UMa binary systems (42 W-subtype and 38 A-subtype) whose light curves have all been solved by means of the recent W-D code and combined with up-to-date radial velocity solutions. The absolute parameters (masses, radii and luminosities) have been derived (without any constraint on the physical parameters). The main results of this paper are: (1) the mass-luminosity relations for both W&A-subtypes. as well as for all W UMa contact binaries have been shown, (2) the mass-radius relations have been found for both subtypes, (3) some remarks on the evolution status have been presented.

• Journal of Astronomy and Space Sciences
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• v.5 no.1
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• pp.57-72
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• 1988

The long-term observational properties of the photometric behaviors of the short period(p=0.48 day) eclipsing binary system XY UMa are discussed. They are based on the UBV observatins, which were carried out by Geyer in the yaers 1955-1961, 1968, 1975-1984. Light curves of XY UMa revealed very large changes not only between consecutive observing nights, but also from season to season. Between 1955 and 1984, the mean system brightness increased about 30% during this time interfvals, meanwhile, the orbital period of this system was constant whithin 1.6% of its period. The colour index curve shows similar variations like the light curve but with a phase offset oscillation around the time instants of the primary minama. Observational evidence for photospheric and chromospheric activities on the XY Uma are also discussed.