• 한국노년학
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• v.38 no.1
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• pp.1-14
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• 2018

Everyday hearing handicap caused by presbycusis ultimately reduces quality of life in older adults. The aim of this study was to explore effects of cognitive impairment on self-reported hearing handicap in older adults with early-stage presbycusis. We compared K-HHIE scores between 40 elderly subjects with mild cognitive impairment (MCI) and age- and hearing-threshold matched 40 cognitively normal elderly (CNE) subjects. The results are as follows: 1) The MCI group scored significantly higher than the CNE group on the social/situational and emotional sections, and in total. 2) The MCI group scored significantly higher than the CNE group on all four subscales, and the most significant group difference was on the first subscale relating to interpersonal relationships and social handicaps. 3) Both groups scored highest on the item 8 (problems hearing whispering sounds) and item 15 (problems hearing TV or radio sounds). Besides those two items, the MCI group also scored high on the item 21 (problems hearing in a restaurant), item 6 (problems hearing when attending a party), item 3 (avoiding groups of people), and item 20 (personal or social restrictions). Our findings suggest that, among older adults with early-stage presbycusis, older adults with cognitive impairment tend to report greater everyday hearing handicap than their peers with normal cognitive function. Especially, they show significant problems hearing in background noise or multi-talker situations, which cause social restrictions and social/emotional loneliness.

• Korean Journal of Medicinal Crop Science
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• v.14 no.3
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• pp.125-129
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• 2006

Two herbal medicines of the Polygonatum genus, namely Polygonati Rhizoma and Polygonati Odorati Rhizoma, are difficult to distinguish from each other through exterior morphologic aspects. Furthermore, because the standard components for physiochemical distinction have not yet been standardized, the identification of these medicines through botanic taxology is based on genetic methods of random amplified microsatellite polymorphism (RAMP). For the RAMP evaluation, we used five sets of UBC microsatellite primers 811, 818, 834, 836, 842 and random primer M1. Although no specific band that could clearly distinguish Polygonati Rhizoma from Polygonati Odorati Rhizoma was found, 11 Polygonatum plants could be divided into two groups by this method. P. sibiricum and P. stenophyllum were classified to group I and the others were to group II. As P. sibiricum and P. stenophyllum were very similar in genetic and morphologic perspective, the results suggest that P. stenophyllum belongs to the Polygonati Rhizoma family.

• Phonetics and Speech Sciences
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• v.16 no.2
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• pp.19-27
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• 2024

The Lombard effect is an involuntary response to speakers' experiences in the presence of noise during voice communication. This study aimed to investigate the Lombard effect by comparing the acoustic features of children and adults under different listening conditions. Twelve male children (5-9 years old) and 12 young adult men (24-35 years old) were recruited to produce speech under three different listening conditions (quiet, noise-55 dB, noise-70 dB). Acoustic analyses were then carried out to characterize their acoustic features, such as F0, intensity, duration, and vowel space area, under the three listening conditions. A Lombard effect was observed in the intensity and duration for children and adults who participated in this study under adverse listening conditions. However, we did not observe a Lombard effect in the F0 and vowel space areas of either group. These findings suggest that children can adjust their speech production in challenging listening conditions as much as adults.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.37 no.2
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• pp.30-39
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• 2019

In this study, 27 representative plants with symbolism and appreciation were extracted from 68 plants collected in Li Yu (1611-1680)'s monograph named 'Xianqingouji Zhongzhibu'. The interpretations were as follows. First, symbolism of plants could be summarized as 1) Li Yu thought that Paeonia suffruticosa was called 'the king of flowers', not only because of its beauty, but also because of its upright character. The only flower that could compete against Paeonia suffruticosa was Paeonia lactiflora Pall.. This flower was called 'the flower prime minister' by common people. But Li Yu thought that Paeonia lactiflora Pall. should also be included in the feudal princes. 2) Prunus persica and Camellia japonica were compared to 'beautiful cheeks', and Malus spectabilis (Ait.)Borkh, Jasminum sambac, Rosa multiflora var. platyphylla, Narcissus tazetta, Papaver rhoeas were compared to 'beautiful women', expressing his love for flowers. 3) Li Yu called Nelumbo nucifera a 'gentleman in flowers' and Buxus sinica Rehd. et Wils. Cheng a 'gentleman in trees'. On the contrary, Daphne odora was compared to 'villain in flowers'. 4) Ilex integra was compared to a hermit, and Campsis grandiflora was compared to an immortal. Second, appreciation of plants could be organized by 1) Appreciation of plants required assistive tools. When going to suburb to enjoy the scenery, tents needed to be prepared. Paper screens should be used to appreciate Prunus mume in the courtyard so as to gain more elegant. Li Yu also proposed that ornamental objects should be properly placed near Orchidaceae so as to gain more elegant. 2）Li Yu took Lagerstroemia indica and Prunus armeniaca L. as examples to interpret that plants were as perceptive as animals and human beings. 3) Li Yu took Salix pierotii and Albizia julibrissin as examples to interpret that people should communicate with plants through five senses to produce resonance. And took Nelumbo nucifera and Rosa rugosa to emphasize the ornamental and practical value of plants. 4) Plants were metaphored sth. similar to them. An interesting example was Celosia cristata L. which was more like an auspicious cloud in the sky than the crest on the cock's head. To sum up, Li Yu personified plants and thought that people should communicate with plants by multi-sensory world when appreciating plants. Through this, it fully showed his love for plants. Meanwhile, Li Yu's symbolism and appreciation of plants, to some extent, reflected the elegant life of literati in the early Qing Dynasty.

• Korean Journal of Agricultural Science
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• v.10 no.2
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• pp.249-256
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• 1983

The aspect of flowering was investigated in 'Georgia' cut lilies which had four flowers per stem. Concurrently effects of preservative solutions on longevity, petal length, water uptake and fresh weight of cut flowers were examined. 1. Days of opening of the 1st, 2nd and 3rd flower were 1-2 days, 3-4 days and 5-6days after beginning of holding treatment respectively. But the 4th flower was opened 9-10 days after beginning of holding treatment when the 1st and 2nd flowers were wilting or drying. 2. The later the opening of flower in a stem was, the shorter the longevity of flower became. But the effects of preservative solutions on longevity were gradually increased as the opening of flower was late in a stem. 3. Preservative solutions containing sucrose and $AgNO_3$ or HQ were able to increase petal length and longevity of the 3rd and 4th flowers sufficiently like the 1st and 2nd flowers. 4. Petal length, water uptake, fresh weight and longevity of cut lilies held in preservative solution containing sucrose, $AgNO_3$ and HQ were increased significantly compared with others. Solution containing sucrose alone increased longevity but decreased water uptake remarkably and did not increase fresh weight and petal length effectively compared with the control.