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청년 임차자의 주택구매에 대한 인식과 경제적 준비: 소비성향과의 관계를 중심으로
이혜주(Lee, Hyeju),김현태(Kim, Hyeontae),이휘현(Lee, Hwihyun),황윤서(Hwang, Yoon-Seo),이현정(Lee, Hyun-Jeong) 한국생활과학회 2021 한국생활과학회지 Vol.30 No.5
The purpose of this study was to explore the status of young renters’ perception of home purchase and their financial preparation, and to examine the influences on the perception and preparation with a focus on their consumption propensity (CP). In April 2021, an online questionnaire survey was conducted among 200 young renters (age 20-39 years) nationwide and data were analyzed statistically. The major findings were as follows: (1) Young renters tended to perceive home purchase as necessary, and 68.0% of them were financially preparing themselves for future home purchase. However, the unfavorable economic situation and negative outlook on the realities of housing purchase appeared to be the biggest obstacles in their financial preparation for home purchase. (2) Through factor analysis, two factors on perception of home purchase (essential-perception factor and active-tendency factor) and four CP factors (conspicuous CP factor, impulse CP factor, prudent CP factor, and planned CP factor) were retrieved. (3) The essential-perception factor on home purchase was found to be influenced by the prudent CP factor and household size; and the active-tendency factor was found to be influenced by the conspicuous CP factor, household size, income level, and impulse CP factor. (4) Actual financial preparation for home purchase was found to be influenced by the income level, employment status, and essential-perception factor on home purchase. CP factors showed no significant influences on the actual financial preparation. In conclusion, it is important to expand the opportunities for young people to accumulate assets by stabilizing their employment, increasing their income, and expanding the supply of affordable rental housing in order to promote their financial preparation for home purchase.
Kaplan, Kyle F.,Dinerstein, Harriet L.,Oh, Heeyoung,Mace, Gregory N.,Kim, Hwihyun,Sokal, Kimberly R.,Pavel, Michael D.,Lee, Sungho,Pak, Soojong,Park, Chan,Oh, Jae Sok,Jaffe, Daniel T. American Astronomical Society 2017 The Astrophysical journal Vol.838 No.2
<P>We present a deep near-infrared spectrum of the Orion Bar Photodissociation Region (PDR) taken with the Immersion Grating INfrared Spectrometer (IGRINS) on the 2.7 m telescope at the McDonald Observatory. IGRINS has high spectral resolution (R similar to 45,000) and instantaneous broad wavelength coverage (1.45-2.45 mu m), enabling us to detect 87 emission lines from rovibrationally excited molecular hydrogen (H-2) that arise from transitions out of 69 upper rovibration levels of the electronic ground state. These levels cover a large range of rotational and vibrational quantum numbers and excitation energies, making them excellent probes of the excitation mechanisms of H2 and physical conditions within the PDR. The Orion Bar PDR is thought to consist of cooler high density clumps or filaments (T = 50-250 K, n(H) = 10(5)-10(7) cm(-3)) embedded in a warmer lower density medium (T = 250-1000 K, n(H) = 10(4)-10(5) cm(-3)). We fit a grid of constant temperature and density Cloudy models, which recreate the observed H2 level populations well, to constrain the temperature to a range of 600-650. K and the density to n(H) = 2.5 x 10(3) -10(4) cm(-3). The best-fit model gives T = 625 K and n(H) = 5 x 10(3) cm(-3). This well-constrained warm temperature is consistent with kinetic temperatures found by other studies for the Orion Bar's lower density medium. However, the range of densities well fit by the model grid is marginally lower than those reported by other studies. We could be observing lower density gas than the surrounding medium, or perhaps a density-sensitive parameter in our models is not properly estimated.</P>
THE CHEMICAL COMPOSITIONS OF VERY METAL-POOR STARS HD 122563 AND HD 140283: A VIEW FROM THE INFRARED
Afş,ar, Melike,Sneden, Christopher,Frebel, Anna,Kim, Hwihyun,Mace, Gregory N.,Kaplan, Kyle F.,Lee, Hye-In,Oh, Heeyoung,Oh, Jae Sok,Pak, Soojong,Park, Chan,Pavel, Michael D.,Yuk, In-Soo,Jaffe, Dan American Astronomical Society 2016 The Astrophysical journal Vol.819 No.2
<P>From high resolution (R similar or equal to 45,000), high signal-to-noise ratio (S/N > 400) spectra gathered with the Immersion Grating Infrared Spectrograph (IGRINS) in the H and K photometric bands, we have derived elemental abundances of two bright, well-known metal-poor halo stars: the red giant HD 122563 and the subgiant HD 140283. Since these stars have metallicities approaching [Fe/H] = -3, their absorption features are generally very weak. Neutral-species lines of Mg, Si, S and Ca are detectable, as well as those of the light odd-Z elements Na and Al. The derived IR-based abundances agree with those obtained from optical-wavelength spectra. For Mg and Si the abundances from the infrared transitions are improvements to those derived from shorter wavelength data. Many useful OH and CO lines can be detected in the IGRINS HD 122563 spectrum, from which derived O and C abundances are consistent to those obtained from the traditional [O I] and CH features. IGRINS high resolutions Hand K-band spectroscopy offers promising ways to determine more reliable abundances for additional metal-poor stars whose optical features are either not detectable, or too weak, or are based on lines with analytical difficulties.</P>
The Spectrum of SS 433 in the<i>H</i>and<i>K</i>Bands
Robinson, Edward L.,Froning, Cynthia S.,Jaffe, Daniel T.,Kaplan, Kyle F.,Kim, Hwihyun,Mace, Gregory N.,Sokal, Kimberly R.,Lee, Jae-Joon American Astronomical Society 2017 The Astrophysical journal Vol.841 No.2
<P>SS 433 is an X-ray binary and the source of sub-relativistic, precessing, baryonic jets. We present high-resolution spectrograms of SS. 433 in the infrared H and K bands. The spectrum is dominated by hydrogen and helium emission lines. The precession phase of the emission lines from the jet continues to be described by a constant period, P-jet = 162.375 days. The limit on any secularly changing period is |P| less than or similar to 10(-5). The He I lambda 2.0587 mu m line has complex and variable P-Cygni absorption features produced by an inhomogeneous wind with a maximum outflow velocity near 900 km s(-1). The He II emission lines in the spectrum also arise in this wind. The higher members of the hydrogen Brackett lines show a double-peaked profile with symmetric wings extending more than +/- 1500 km s(-1) from the line center. The lines display radial velocity variations in phase with the radial velocity variation expected of the compact star, and they show a distortion during disk eclipse that we interpret as a rotational distortion. We fit the line profiles with a model in which the emission comes from the surface of a symmetric, Keplerian accretion disk around the compact object. The outer edge of the disk has velocities that vary from 110 to 190 km s(-1). These comparatively low velocities place an important constraint on the mass of the compact star: its mass must be less than 2.2 M-circle dot and is probably less than 1.6 M-circle dot</P>