• Transactions of the Korean Society of Automotive Engineers
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• v.19 no.5
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• pp.58-66
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• 2011

A 2-loop waste heat recovery system with Rankine steam cycles for the improvement of fuel efficiency of gasoline vehicles has been investigated. A high temperature loop(HT loop) is a system to recover the waste heat from the exhaust gas, a low temperature loop(LT loop) is for heat recovery from the engine coolant cold relatively. This paper has dealt with a layout of a LT loop system, the review of the working fluids, and the design of the cycle. The design point and the target heat recovery of the LT boiler, a core part of a LT loop, has been presented and analytically investigated. Considering the characteristics of the cycle, the basic concept of the LT boiler has been determined as a shell-and tube type counterflow heat exchanger, the performance characteristics for various design parameters were investigated.

• Research in Community and Public Health Nursing
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• v.33 no.2
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• pp.247-258
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• 2022

Purpose: Considering that nurses perform critical roles for caring for patients during the COVID-19 pandemic, it is important to investigate core competencies in disaster nursing. This study aimed to identify influencing factors on core competencies in disaster nursing by examining relationships between attitudes toward disaster management, disaster preparedness, and core competencies in disaster nursing in university hospital nurses' experiences of caring for patients with COVID-19. Methods: The participants were nurses working in two university hospitals who had either experiences of caring for patients with COVID-19 or no experiences. A questionnaire was distributed to 198 participants between October and November 2021. Results: The findings of multiple regression analysis demonstrated that the factors related to core competencies in disaster nursing in the participants were disaster preparedness (β=.80, p<.001) and nurses' experiences of caring for patients with COVID-19 (β=.11, p=.007). Specifically, the factors related to core competencies in disaster nursing in those having experiences of direct caring for patients with COVID-19 were disaster preparedness (β=.84, p<.001) and marital status (β=.16, p=.001). The factors related to core competencies in disaster nursing in those with indirect caring for patients with COVID-19 were disaster preparedness (β=.75, p<.001) and an intention to participate in disaster response (β=.16, p=.037). Conclusion: Based on this study, it is important to develop disaster nursing education programs focusing on the full spectrum of disaster management including disaster preparedness, disaster response, and disaster recovery training.

• Journal of the Korean Society for Library and Information Science
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• v.42 no.3
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• pp.103-131
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• 2008

Today. the mental health has a great deal of impact on individuals and the society surrounding. Therefore. this research is to propose a way of bibliotherapical intercession by stages and patterns as to examine the recovery process of students with negative emotion by using the grounded theoretical method. This research collected materials through focus-interview, participant observation and book reports of 4 experiments involving female college students aged from 21 to 23, all having emotional and psychological difficulties. The recovery process of female students with negative emotion involved causal factors such as "recognition of hidden wound" "Sense of inferiority", and "difficulty in forming relationships", as well as contextual factors like "sympathetic attitude". which altogether brought about the core phenomenon. "pursuit for healthy ego". This core phenomenon induced to recovering the bright and positive attitude through using the strategies of 'self insight' and application of 'management plan', influence by such incoherent conditions as 'intimate surroundings' and $\setminus$ 'support system patterns'. And as time passed. the recovery process appeared tin four stages: 'issues recognition'. 'emotional responses', 'issue solution' and 'self application'.

• KDI Journal of Economic Policy
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• v.32 no.3
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• pp.1-32
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• 2010

The global financial crisis has exerted enormous impacts on the attainment of inflation target in Korea. The annual average CPI inflation was 3.3% during the targeting period of 2007-2009 and the target was $3.0{\pm}0.5%$. Thus Korea has succeeded in keeping annual average CPI inflation just below the upper limit of the 2007-2009 target under the global crisis. This paper intends to evaluate the performance of the inflation targeting system in Korea. First, it estimates the conventional call rate reaction equation under the global crisis and finds that the policy interest rates never reacted to expected inflation, output gap, and won/dollar exchange rate, as expected by theory. Second, it identifies the shock of global financial crisis into core and non-core, applying the structural VAR model. The core shock was defined to have no (medium- to) long-run impact on real output. The core shock was identified to have the character of the demand shock, since it has the positive impact on the inflation and output in the short run. The structural core inflation due to core shock was an attractor of headline inflation, not vice versa. Therefore, the structural core inflation that reflects the demand-side shock would be the better intermediate target for the final headline inflation target than the official core inflation that excludes the volatile inflation of agricultural and oil-related products. During the inflation targeting period of 2007-2009, the structural core inflation was more volatile than the official core inflation, because the global crisis has very large negative impacts on the domestic demand as well as the prices of agricultural and oil-related products. This paper shows that the negative core shock during the fourth quarter of 2008 was larger than that in the financial crisis in 1998. But the core shock turned into positive very quickly in 2009, as the Korean economy recovered very quickly from crisis. The volatile changes in structural core inflation suggests that the Bank of Korea barely managed to attain the 2007-2009 inflation target, owing to the very large negative impacts of the global financial crisis on the domestic demand. It also suggests that the rapid rise in core inflation with the rapid recovery of the Korean economy will lead to rapid rise in headline inflation.

• Molecules and Cells
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• v.23 no.2
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• pp.161-169
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• 2007

We identified two alternatively spliced variants of the peroxisomal targeting signal 1 (PTS1) receptor protein Pex5ps in monocot (rice, wheat, and barley) but not in dicot (Arabidopsis and tobacco) plants. We characterized the molecular and functional differences between the rice (Oryza sativa) Pex5 splicing variants OsPex5pL and OsPex5pS. There is only a single-copy of OsPEX5 in the rice genome and RT-PCR analysis points to alternative splicing of the transcripts. Putative light-responsive cis-elements were identified in the 5' region flanking OsPEX5L and Northern blot analysis demonstrated that this region affected light-dependent expression of OsPEX5 transcription. Using the pex5-deficient yeast mutant Scpex5, we showed that OsPex5pL and OsPex5pS are able to restore translocation of a model PTS1 protein (GFP-SKL) into peroxisomes. OsPex5pL and OsPex5pS formed homo-complexes via specific interaction domains, and interacted with each other and OsPex14p to form hetero-complexes. Although overexpression of OsPex5pL in the Arabidopsis pex5 mutant (Atpex5) rescued the mutant phenotype, overexpression of OsPex5pS only resulted in partial recovery.

• ETRI Journal
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• v.44 no.2
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• pp.274-285
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• 2022

Retransmission in optical burst switching networks is a solution to recover data loss by retransmitting the dropped burst. The ingress node temporarily stores a copy of the complete burst and sends it each time it receives a retransmission request from the core node. Some retransmission schemes have been suggested, but uncontrolled retransmission often increases the network load, consumes more bandwidth, and consequently, increases the probability of contention. Controlled retransmission is therefore essential. This paper proposes a new controlled retransmission scheme for loss recovery, where the available bandwidth of wavelength channels and the burst lifetime are referred to as network conditions to determine whether to transmit a dropped burst. A retrial queue-based analysis model is also constructed to validate the proposed retransmission scheme. The simulation and analysis results show that the controlled retransmission scheme is more efficient than the previously suggested schemes regarding byte loss probability, successful retransmission rate, and network throughput.

• Journal of Korean Academy of Nursing
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• v.35 no.6
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• pp.1025-1035
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• 2005

Purpose: The purpose of this study was to explore the experiences of recovery from disease in the patients doing a kind of Buddhist meditation, and to develop a grounded theory about meditation. Method: Data was collected by an in-depth interview using tape-recordings from sixteen participants doing meditation. The data was analyzed using the grounded theory method proposed by Strauss and Corbin(1998). Result: The core category was discovering the true self. The participants began to do meditation because of their disease. They experienced obstacles due to incomplete religious acceptance. However, their faith grew gradually based on religious experiences that were indescribable. Finally, they entirely trusted the inner healer, which is emphasized in meditation. The strategies that they used were self reflection and seeking help for accepting deep meditation. They were stabilized in physical, psychological and social daily living. The processes of discovering the true self were identified as entering religious discipline, embodying religious discipline, self-accomplishing religious faith, and recovering mind-body health. Conclusion: This study provided the understanding of mind-body integration. Empirical research may be needed to prove scientifically the effects of meditation.

• The Transactions of the Korean Institute of Power Electronics
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• v.6 no.1
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• pp.64-73
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• 2001

This paper presents a Zero Voltage and Zero Current Switching (ZVZCS) 3-Level DC/DC converter. This converter overcomes the drawbacks presented by the conventional Zero Voltage Switching(ZVS) 3-Level converter, such as high circulating energy, severe parastic ringing on the rectifier diodes, and limited ZVS load range for the inner switches. The converter presented in this paper uses a phase shift control with a flying capacitor in the primary side to achieve ZVS for the outer switches. Additionally, the converter uses an energy recovery snubber to reset the primary current during the free-wheeling stage to achieve ZCS for the inner switches. The proposed converters are analyzed and verified on 6kW, 39kHz experimental prototype.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.39 no.1
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• pp.56-62
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• 2011

A Satellite transponder is mounted on the Satellite and performs radio communications with the ground station. A Digital transponder compared to The analog transponder is made easy and accurate performance prediction. Also Modulation Scheme, Data Rate, Loop Bandwidth, Modulation Index and etc. can be changed on orbit, by implementing FPGA can reduce the weight and volume. The core technology of digital transponder is Carrier Recovery loop. Dynamic Range, Frequency Tracking Range, Frequency Tracking Rate and Coherent performance are determined by the performance of the Carrier Recovery loop. In this paper, we proposed the structure of Carrier Recovery loop for the Satellite digital transponder, then tested and verified the structure.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.16 no.4
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• pp.1-14
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• 2013

A species restoration plan requires a process where the first is to thoroughly study the target species, second is to provide them with an onsite reproduction and adaptation period, and finally, third is to release them to their natural habitat. This study focuses on the space planning for target species' successful onsite reproduction and adaptation. For the study, a site planning near Sobaeksan National Park was implemented with Red Fox's behavior and habitat characteristics in mind for its recovery, reproduction, and natural adaptation. During site selection and planning, the basic aim was to incorporate the existing site as much as possible thus reducing the impact on the environment from the recovery plan. In addition, for a stable recovery of the Red Fox population, the site was classified into three different areas : core area, buffer zone, and transition area. Then, the facilities that help Red Fox's reproduction and adaptation such as reproduction center, foraging site, adaptation training center were planned. Under the condition that the site will be off limit to the public, a limited number of paths for monitoring was provided. For the site's vegetation, the existing species were planted as much as possible with the addition of plants that the Red Fox consume. The facilities included as Red Fox's habitat were fox burrows for hiding and ecological ponds for drinking. From this study, the recovery of the endangered fox species is expected as well as the contribution to an effort to increase of awareness toward the biological resources in Korea through Nagoya protocol. Furthermore, it has the potential to change the public's attitude toward endangered species recovery projects through publicizing and providing experience to the national park visitors.