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Search Results: 1 - 10 of 25610 matches for " Yumi Lee "
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Coastal Planning Strategies for Adaptation to Sea Level Rise: A Case Study of Mokpo, Korea  [PDF]
Yumi Lee
Journal of Building Construction and Planning Research (JBCPR) , 2014, DOI: 10.4236/jbcpr.2014.21007
Abstract: Climate change and sea level rise necessitate adaptation strategies for coastal areas. This paper showcases five strategies for sea level rise adaptation: hard protection, soft protection, accommodation, retreat, and attack. This study proposes adaptation measures and a phased development strategy for coastal areas of Mokpo, an old port city on the southwestern tip of the Korean Peninsula that has been expanded by land reclamation. Mokpo presently experiences frequent flooding during high-water and storm events; due to their low elevation and land subsidence, most of the reclaimed areas are susceptible to future inundation via sea level rise. The fundamental adaptation strategies for the impact areas are: hard protection of important infrastructures via multi-tiered terraces; the retreat of coastal developments accompanied by green buffer zones such as wetlands and parks to accommodate temporary inundation; and up-leveling the ground for new development and phased relocation of existing development. Through the case study of Mokpo, the paper emphasizes the importance of resilient planning strategies for urban development, and highlights both the challenges and opportunities for sea level rise adaptation.
Protecting the Coastline from the Effects of Climate Change: Adaptive Design for the Coastal Areas of Gangneung, Korea  [PDF]
Yumi Lee
Journal of Building Construction and Planning Research (JBCPR) , 2015, DOI: 10.4236/jbcpr.2015.32011
Abstract: The purpose of this research is to present design strategies to enable coastal areas to adapt to climate change and maintain the coastlines by addressing the environmental and urban issues. Gangneung is a tourist attraction situated on South Korea’s east coast, and there is an urgent need for integrated research on strategies to prevent the loss of sandy beaches and the damage caused by storm surges and high swell. This research has two objectives: The first is to offer an overview and describe the characteristics of exemplary projects carried out to manage the storm damage while maintaining the coastlines. The second is to propose a design model that can be applied to coastal areas susceptible to climate change by analyzing the design strategies and the current conditions of the Gangneung coastal area. In the case of Gangneung, the damage caused by the storm surges and high swells are more severe compared to inundation caused by sea level rise because of the steep slope and deep water. Therefore, adaptive design strategies are mainly focused on accommodation and retreat strategies that consider these characteristics by moving the coastal roads behind the pine forest and raising the coastal buildings to connect the coast to the forest and to prevent coastal erosion. This research has the potential to be used as an exemplary design adaptation for coastal erosion as well as a basis for regulating the land use policy in areas susceptible to flood by establishing guidelines for publicly funded developments, and preparing long-term relocation plans for the existing coastal developments to create a sustainable and resilient future for the coastal areas.
The Influence of Surrounding Ground Floor Facilities on the Use of Privately Owned Public Spaces in Seoul  [PDF]
Bonwoo Koo, Yumi Lee
Journal of Building Construction and Planning Research (JBCPR) , 2015, DOI: 10.4236/jbcpr.2015.32010
Abstract: Seoul’s privately owned public space (POPS) initiative has achieved quantitative success since its introduction in the early 1990s. However, POPSs have been frequently criticized for failing to correspond with the urban context in which they are created and are thus often underused. Association between surrounding urban context and the use of POPS is acknowledged, but specific elements of the urban context associated with the use of POPS and the extent of association are unclear. In this study, the relationship between constituent elements of 48 POPSs including the surrounding ground floor facility use and the use of those spaces in Seoul’s central business district was measured by multiple regression analysis. The results present empirical evidence of a substantial relationship between assembly, mercantile, and business facilities on ground floors of surrounding buildings and the use of POPS. As the surrounding ground floor facility use showed an overriding relationship with the use of POPS that possibly overshadowed the influence of secondary determinants, the 48 POPSs were divided into two groups: those surrounded by commercial facilities and those surrounded by business facilities. The use of POPSs surrounded by commercial facilities was associated with additional variables including the proximity to transit stations and crosswalks. Models using the sample of POPSs surrounded by business facilities were not statistically significant. Based on these results, this paper emphasizes the importance of creating POPSs in connection with desirable surrounding facilities. This study also suggests that anticipation of the usage patterns of POPSs and establishment of guidelines supporting those patterns may be viable by investigating preexisting urban contexts.
The University-City Interface: Plazas and Boulevards  [PDF]
Yumi Lee, Gwang Ya Han, Hong-ill Kim
Journal of Building Construction and Planning Research (JBCPR) , 2014, DOI: 10.4236/jbcpr.2014.22014
Abstract: It has become an increased challenge for designers to define the boundaries between the university and its surrounding city. The amount of space serving as a nexus between universities and urban areas is gradually increasing. This study defines such intermediate spaces as “the university-city interface”—areas that influence the university’s physical and functional connection to the surrounding city. The research presents comparative case studies of three universities in urban contexts—Harvard University, University of Pennsylvania, and Université Catholique de Louvain— by analyzing plazas and boulevards. These representative open spaces provide interfaces for both the university campuses and their surrounding cities. This paper analyzes design elements from the perspective of campus spatial structure, as well as locations and functions, to develop a comparative checklist for plazas and boulevards. The results offer a set of urban design principles for university plazas and boulevards that could significantly improve the quality of the university-city relationship. While these checklists and principles may vary depending on circumstances, they can be useful starting points for initializing design processes.
Relationship between Depression and Aging Awareness among Frail Older Adults Living Alone in Japan  [PDF]
Yumi Okinaka
Health (Health) , 2018, DOI: 10.4236/health.2018.1011117
Abstract: Aim: This study aimed to clarify the relationship between depression and aging awareness among older adults living alone with low-level long-term-care needs. Methods: Participants were older adults aged 65 years and older in Japan. Data were collected via an anonymous questionnaire. Participants were categorized based on their long-term care need level, from Support 1 to Care 2 according to the care insurance criteria in Japan. The questionnaire included: 1) the Geriatric Depression Scale-Short Version-Japanese (GDS); 2) items on aging life satisfaction at present, and positive and negative aging awareness in the past (when they were young); 3) the SF-8 to assess health-related quality of life; 4) the Lubben Social Network Scale-6 (LSNS-6); and 5) items on the use of care services. Data were analyzed using multiple logistic regression analysis. Results: In total, 457 participants were recruited. Their mean age was 83.9 ± 6.5 years; 39.8% of the participants had a GDS score of 6 and above. In the regression analysis, the GDS score significantly correlated with aging life satisfaction at present, negative aging awareness in the past, mental health, and social networks. Conclusion: Older adults living alone who have positive views of their current lives and lacked negative views of aging in their younger years were resistant to depression after being certified as requiring low-level long-term care. Preventing and improving depression in this population requires community-based support to expand their social networks and to help individuals of all ages view the aging process positively.
Interoceptive hypersensitivity and interoceptive exposure in patients with panic disorder: specificity and effectiveness
Kiyoe Lee, Yumiko Noda, Yumi Nakano, Sei Ogawa, Yoshihiro Kinoshita, Tadashi Funayama, Toshiaki A Furukawa
BMC Psychiatry , 2006, DOI: 10.1186/1471-244x-6-32
Abstract: We first performed an exploratory principal factor analysis of all the items contained in the BSQ to obtain meaningful dimensions of interoceptive fears. Next, we examined the correlations between each interoceptive exposure task's degree of similarity to panic attacks and each BSQ factor and then examined whether the BSQ factor scores decreased in comparison with the baseline values when the corresponding exposure tasks were successfully completed by the subjects.The factor analyses revealed four factors, which we named "pseudoneurological fears", "gastrointestinal fears", "cardiorespiratory fears" and "fears of dissociative feelings." Among the nine interoceptive exposure tasks, 'hyperventilation', 'shaking head', 'holding breath' and 'chest breathing' were considered to reproduce pseudoneurological symptoms, 'breathing through a straw' was considered to reproduce gastrointestinal symptoms, and 'spinning' was considered to reproduce both pseudoneurological and dissociative symptoms; none of the interoceptive exercises were found to reproduce cardiorespiratory symptoms. Among each group of patients for whom 'hyperventilation', 'holding breath', 'spinning' or 'chest breathing' was effective, a significant improvement in the BSQ pseudoneurological fears factor scores was observed. On the other hand, no significant difference between the baseline and endpoint values of the BSQ gastrointestinal fears or the BSQ fears of dissociative feelings factor scores were observed among the patients for whom 'spinning' or 'breathing through a straw' was effective.Several interoceptive exposure tasks were particularly effective in reducing pseudoneurological fears. New interoceptive tasks, especially tasks related to cardiorespiratory and dissociative feelings, are needed.Panic disorder is a common but disabling anxiety disorder. The chief defining criteria for panic disorder are recurrent unexpected panic attacks, persistent concern about having an additional attack, and worry abo
Amino Acids That Centrally Influence Blood Pressure and Regional Blood Flow in Conscious Rats
Yumi Takemoto
Journal of Amino Acids , 2012, DOI: 10.1155/2012/831759
Abstract: Functional roles of amino acids have increasingly become the focus of research. This paper summarizes amino acids that influence cardiovascular system via the brain of conscious rats. This paper firstly describes why amino acids are selected and outlines how the brain regulates blood pressure and regional blood flow. This section includes a concise history of amino acid neurotransmitters in cardiovascular research and summarizes brain areas where chemical stimulations produce blood pressure changes mainly in anesthetized animals. This is followed by comments about findings regarding several newly examined amino acids with intracisternal stimulation in conscious rats that produce changes in blood pressure. The same pressor or depressor response to central amino acid stimulations can be produced by distinct mechanisms at central and peripheral levels, which will be briefly explained. Thereafter, cardiovascular actions of some of amino acids at the mechanism level will be discussed based upon findings of pharmacological and regional blood flow measurements. Several examined amino acids in addition to the established neurotransmitter amino acids appear to differentially activate brain structures to produce changes in blood pressure and regional blood flows. They may have physiological roles in the healthy brain, but pathological roles in the brain with cerebral vascular diseases such as stroke where the blood-brain barrier is broken. 1. Introduction When the rat spontaneously performs an action such as grooming [1] or walking [2], changes in regional blood flows for head and legs are produced. The brain appropriately regulates blood supply to organs needed for planning of each behavior. For matching cardiovascular demand to each behavior, various kinds of potential neurotransmitters and neuromodulators should work in neuronal networks of the brain relating to the cardiovascular system and behavioral planning. A list of neurotransmitters includes the amino acids glutamate and GABA (gamma-amino-butyric acid) which are well established as endogenously produced excitatory and inhibitory agonists, respectively [3], and appear to play a pivotal role in the central nervous system relating to cardiovascular regulation [4–7]. However, it has been expanding to range the kind and the number of mediators between brain cells from classic neurotransmitter biogenic amines to gaseous neurotransmitters [8] and to gliotransmitters [9]. With respect to amino acids, the concentration of most amino acids in the cerebrospinal fluid is lower than those in the blood [10]. The
Intracisternally Injected L-Proline Activates Hypothalamic Supraoptic, but Not Paraventricular, Vasopressin-Expressing Neurons in Conscious Rats
Yumi Takemoto
Journal of Amino Acids , 2011, DOI: 10.4061/2011/230613
Abstract: When injected into specific rat brain regions, the neurotransmitter candidate L-proline produces various cardiovascular changes through ionotropic excitatory amino acid receptors. The present study used an immunohistochemical double-labeling approach to determine whether intracisternally injected L-proline in freely moving rats, which increases blood pressure, activates hypothalamic vasopressin-expressing neurons and ventral medullary tyrosine-hydroxylase- (TH-) containing neurons. Following injection of L-proline, the number of activated hypothalamic neurons that coexpressed vasopressin and c-Fos was much greater in the supraoptic nucleus (SON) than in the paraventricular nucleus (PVN) of rats with increased blood pressure. The number of activated TH-containing neurons was significantly greater following L-proline treatment than following control injections of artificial cerebrospinal fluid (ACSF). These results clearly demonstrate that intracisternally injected L-proline activates hypothalamic supraoptic, but not paraventricular, vasopressin-expressing neurons and medullary TH-containing (A1/C1) neurons in freely moving rats. 1. Introduction The nonessential imino acid L-proline has been proposed to be a neurotransmitter or neuromodulator of the central nervous system [1–3]. It produces various functional changes in animals, such as cardiovascular changes in rats [4–8] and sedation as well as hypnotic effects under stressful conditions in chicks [9, 10]. Intracisternal injections of L-proline, but not D-proline, have been shown to cause an increase in blood pressure in freely moving rats in a dose-dependent manner via ionotropic excitatory amino acid receptors in the brain [4, 5, 11]. This hypertensive response to centrally administered L-proline can be almost inhibited by intravenous preinjection of a vasopressin V1 receptor antagonist alone and augmented in ganglionic blocking rats where the augmented response was completely abolished by the additional vasopressin receptor antagonist [11], suggesting that the L-proline-induced pressor response could be mainly mediated by the release of hypothalamic vasopressin into the blood stream. Previous studies have shown that intracisternally injected dye robustly stains the medullary surface [12, 13]. These results suggest that intracisternally injected L-proline might diffuse and reach the medullary A1 catecholamine neurons, which send their terminals to vasopressin-expressing neurons in both the paraventricular nucleus (PVN) and the supraoptic nucleus (SON) of the hypothalamus [14]. The goal of this study
Molecular characterization of a novel mycovirus in the cultivated mushroom, Lentinula edodes
Yumi Magae
Virology Journal , 2012, DOI: 10.1186/1743-422x-9-60
Abstract: A cDNA library was constructed from a dsRNA purified from the fruiting body of L. edodes. The virus was tentatively named L. edodes mycovirus HKB (LeV). Based on the deduced RNA-dependent RNA polymerase (RdRp) sequence, phylogenetic analysis of LeV was conducted. Because no virion particles associated with the dsRNA were observed by electron microscopic observation, atomic force microscopy (AFM) observation was chosen for achieving molecular imaging of the virus.The 11,282-bp genome of LeV was obtained. The genome encoded two open reading frames (ORFs). ORF1 coded for a hypothetical protein and ORF2 for a putative RdRp, respectively. In addition, a region coding for a NUDIX domain was present in ORF1. There was a 62-bp intergenic region between ORF1 and RdRp. Similarity with coat protein of mycoviruses was not found within the whole sequence. Based on phylogenetic analysis of the putative RdRp sequence, LeV grouped into a clade with dsRNA found in the basidiomycetes Phlebiopsis gigantea and Helicobasidium mompa. The clade was placed apart from the Totiviridae and Chrysoviridae families. As suggested from the genome sequence, AFM revealed that the structure of LeV was linear unencapsidated dsRNA.The results suggest that LeV represents a novel family of mycoviruses, found thus far only among the basidiomycetes.In the 1970s, viruses that infect the cultivated mushroom Lentinula edodes, or shiitake, were extensively studied in Japan [1-3], and three morphologically distinct viruses were detected by electron microscopy [1,3]. However, unlike La France disease of the white button mushroom [4,5], mycoviruses have not been associated with shiitake diseases because these mycoviruses have commonly been found in healthy fruiting bodies [1,3]. In the USA, dsRNAs have also been observed in shiitake strains, but these appeared to be latent [6]. In the 1970s, shiitake cultivation was performed by inoculating mycelium spawn on oak logs; however, this labor-intensive method was grad
What You See is Not Necessarily What You Get: A Caveat for Scandinavian Place-name Evidence
Yumi Yukota
E-Sharp , 2004,
Abstract:
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