• Journal of The Korean Astronomical Society
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• v.49 no.6
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• pp.233-238
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• 2016

The missing historical record of the Cassiopeia A (Cas A) supernova (SN) event implies a large extinction to the SN, possibly greater than the interstellar extinction to the current SN remnant. Here we investigate the possibility that the guest star that appeared near Cas A in 1592-1593 in Korean history books could have been an 'impostor' of the Cas A SN, i.e., a luminous transient that appeared to be a SN but did not destroy the progenitor star, with strong mass loss to have provided extra circumstellar extinction. We first review the Korean records and show that a spatial coincidence between the guest star and Cas A cannot be ruled out, as opposed to previous studies. Based on modern astrophysical findings on core-collapse SN, we argue that Cas A could have had an impostor and derive its anticipated properties. It turned out that the Cas A SN impostor must have been bright ($M_V=-14.7{\pm}2.2mag$) and an amount of dust with visual extinction of ${\geq}2.8{\pm}2.2mag$ should have formed in the ejected envelope and/or in a strong wind afterwards. The mass loss needs to have been spherically asymmetric in order to see the light echo from the SN event but not the one from the impostor event.

• Journal of Korea Entertainment Industry Association
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• v.14 no.7
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• pp.55-68
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• 2020

This study is purposed to make sure of the Effects of Enterprise Trust on Relation-Continuing Intention and the Mediation Effects of Relation-Continuing Intention in the effects of Enterprise Trust on Customer Citizenship Behavior. Enterprise Trust consists of two elements(Enterprise Sincerity, Enterprise Ability), Customer Citizenship Behavior is made up of two elements(Guest Preference, Guest Cooperation) and Relation-Continuing Intention has one element itself. As a result, two things have been found. First, Enterprise Trust has a partly positive impact on Customer Citizenship Behavior. In details, both of two elements of Enterprise Trust have positive influences on Guest Preference, one element of Customer Citizenship Behavior, on the other hand, Enterprise Sincerity, one element of Enterprise Trust has a positive influence on Guest Preference, one element of Customer Citizenship Behavior but Enterprise Ability, the other element of Enterprise Trust, has no meaningful impact on Guest Preference. Second, Relation-Continuing Intention has a mediating effect between Enterprise Trust and Customer Citizenship Behavior. In details, Relation-Continuing Intention has a partial mediating role between Enterprise Sincerity and Guest Preference, between Enterprise Ability and Guest Preference and between Enterprise Sincerity and Guest Cooperation. However Relation-Continuing Intention has a full mediating role between Enterprise Ability and Guest Cooperation.

• The Journal of Asian Finance, Economics and Business
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• v.5 no.3
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• pp.73-80
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• 2018

The growth of Bandung's tourism industry has had a massive impact on the hotel sector. Most tourists visiting Bandung are domestic tourists and tend to be modest spenders fitting the profile of a mid-market (2/3 star) hotel guest. As competition has increased mid-market hotels have come under pressure from upmarket (4/5 star) and budget hotels committed to cutting prices. There is also competition with the mid-market hotel sector, which means that the 2/3 star hotels have to keep innovating in order to remain competitive. This study uses the Service Quality framework to describe customer expectations and identify gaps in hotel services. A questionnaire survey of 105 local tourists who had stayed in 2/3 star hotels in Bandung showed that the most important dimension is responsiveness, following by reliability, assurance, tangibles and empathy. Thus we conclude that local tourists' primary expectations are that hotels will deliver the service they have promised, be responsive to guests' needs and comply with service standards. Furthermore, these findings validate the earlier prediction that comparing 2/3 star hotel with 5/4 start hotel, the customers are having preliminary knowledge on facilities limitation and friendliness. Tourists using 2/3 star hotels tend to be prepared to accept limited facilities and less friendly staff service.

• Journal of The Korean Astronomical Society
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• v.1 no.1
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• pp.29-36
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• 1968

1. 28 candidates of novae and supernovae were selected from ancient Korean observational records. 2. 4 Supernovae were confirmed. 3. 1 guest star was suspected as the original explosion of Cas A. 4. 9 asterisked positions were suggested for further study in the hope of finding additional supernovae-radio sources.

• Publications of The Korean Astronomical Society
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• v.5 no.1
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• pp.85-94
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• 1990

Wangjo Silok, the official chronicle of Lee Dynasty, carries 131 records on the Kepler Supernova 1604; all of them are given in the present report. Among them 112 records are detailed descriptions about the observed brightness variation over the period from October 13, 1604 (the 37th year of King Sunjo) to April 23, 1605. On July 14, 1605, an addendum is given as a final assessment of the guest star incidence. Since the apparent brightness, size and position are carefully described as compared to bright planets and stars, these records are ideal for retrieving light curve of the Kepler Supernova over the seven month period. Simple procedures are suggested for the derivation of light curve.

• Journal of Korea Entertainment Industry Association
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• v.13 no.8
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• pp.93-106
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• 2019

This study is purposed to make sure of the Effects of Hotel Brand Equity on Enterprise Trust and Customer Citizenship Behavior. For this study, the effects of Hotel Brand Equity on Enterprise, the effects of Hotel Brand Equity on Customer Citizenship Behavior and the effects of Enterprise Trust on Customer Citizenship Behavior were analyzed statically by the method of multiple regression analysis. Hotel Brand Equity consists of 3 elements(Perceived Service Quality, Brand Image, Brand Awareness), Enterprise Trust is made of 2 elements(Enterprise Ability, Enterprise Sincerity) and Customer Citizenship Behavior has 2 element(Guest Preference, Guest Helping). As a result, three things have been found. First, Perceived Service Quality has a positive influence on both of Enterprise Trust and Customer Citizenship Behavior which means that Perceived Service Quality is the most essential element for hotel marketing performance. Second, Brand Image has a positive influence partly on Enterprise Trust, that is, only on Enterprise Ability, not Enterprise Sincerity and also on both Guest Preference and Guest Helping whereas Brand Awareness has a positive influence on both of Enterprise Ability and Sincerity but it has no influence on Customer Citizenship Behavior. Third, Enterprise Sincerity has a positive influence on both of two elements in Customer Citizenship Behavior whereas Enterprise Ability has a positive influence on only Guest Helping.

• Journal of Astronomy and Space Sciences
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• v.29 no.2
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• pp.209-220
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• 2012

This paper will introduce and overview in general the $Seongbyeon$ $Deungrok$ issued by the Gwansang-gam, the Astronomical Board in the Joseon Dynasty of Korea. All the Chinese characters in the 1668 $Seongbyeon$ $Deungrok$ was deciphered at first and these were translated into Korean and English. With these translations and the word 'white vapor' in particular we discuss the nature of the main object in this $Deungrok$. Lastly, names of observers who engaged in the observations of this 1668 celestial, which are made as a by-product of this research, are introduced.