• Current Photovoltaic Research
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• v.2 no.3
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• pp.124-129
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• 2014

Dye-sensitized solar cells (DSSCs) are considered as promising alternatives to conventional photovoltaic device. However, commercialization of the DSSCs is restricted due to the low efficiency. In this paper, highly efficiency DSSCs were fabricated by the adding the TBA to the $TiO_2$ paste. $TiO_2$ photoanode added 0.2 M TBA in DSSCs are shown the best efficiency of 9.14 %. This result ascribed to improvement of the connection between the $TiO_2$ nanoparticles by the addition of the optimized amount TBA. The morphology of the photoanode was observed by FE-SEM. Further investigation about the kinetics of the electrochemical processes are performed by the EIS analysis. Longest diffusion length was obtained in case adding 0.2 M of TBA to $TiO_2$ paste, which was matched well with the improved efficiency.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.2 no.4
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• pp.13-18
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• 2009

This paper suggests that efficiency improvement of power amplifier to enhance harmonic suppression using a DGS line structure. A efficiency related harmonic component is an important factor to design of power amplifier. Therefor harmonic component suppress consisting coupled line using DGS after power amplifier. A DGS line with periodic slits and stubs is first designed and joined after power ampifier. Experimental measurements for efficiency of power amplifier in the WCDMA are shown to improve 6% of PAE.

• Advances in Energy Research
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• v.5 no.3
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• pp.207-217
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• 2017

Energy consumption in agriculture is responsible for greenhouse gas emission but it can be reduced after efficient utilization of energy inputs. Therefore, the present study aims for the estimation of energy efficiency and extent of greenhouse gas reduction after benchmarking of inefficient farms in off-season tomato in Punjab province of Pakistan. Primary data were collected from 70 farmers with simple random sampling. By using data envelopment analysis, the average value of technical, pure technical and scale efficiency was 0.80, 0.92 and 0.87, respectively while increasing, constant and decreasing return to scale was observed in 33, 26 and 11 farmers, respectively. Total input energy was reduced by $12,688.91MJ\;ha^{-1}$ (13.89%) if inefficient farms used the energy inputs according to recommendations or benchmarking. A major portion of energy saving comes from fertilizers (68.79%) followed by diesel (15.70%), chemicals (5.91%), machinery (4.37%) and water (4.00%). Total greenhouse gases reduction was $499.17kg\;CO_2\;eq.ha^{-1}$ (14.57%) as a result of improvement in energy efficiency or benchmarking of inefficient farms. Agricultural extension staff should visit the vegetable farms on regular basis and give necessary information about efficient utilization of energy inputs. The government should create awareness about the optimum use of input through seminars and pamphlets.

• Journal of the military operations research society of Korea
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• v.29 no.2
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• pp.111-130
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• 2003

This paper deals with the improvement of doctrine, organization, and training for Weapon systems during the defense acquisition process. We analyze the combat development element such as doctrine, organization, and training which is working in the United States of America. then we apply the ideas to our proposal for the improvement of doctrine, organization, and training for weapon systems. This paper will be contributed to the improvement of doctrine, organization, and training and the efficiency of defense acquisition program management.

• 한국정보디스플레이학회:학술대회논문집
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• 2003.07a
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• pp.339-342
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• 2003

Main PDP panel efficacy improvement factors are discussed. A large panel efficacy improvement can be obtained through a combination of discharge efficiency improvement and phosphor improvement. Important design elements are a high Xe-content gas mixture, the application of a $TiO_2-layer$, and a new green phosphor with little saturation at high VUV-load. In a 4-inch color test panel with a conventional stripe-type cell configuration a white efficacy of 4.4 lm/W and a luminance of 5000 $cd/m^2$ is obtained for sustaining at 250V in addressed condition.

• Journal of the Korea Safety Management & Science
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• v.5 no.1
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• pp.143-162
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• 2003

The governance structure of corporate is very important to raise the nation's economic efficiency and the operation result of firm. However, the innovation of corporate governance structure is a important problem to improve international confidence in our country, since most large corporate in our country has a promodern governance structure to be influenced in decision making of corporate group by minority governance-shareholder. Therefore, in our country the improvement of corporate governance structure is very urgent. This study examine the improvement device of corporate governance structure to be introduced in our country, and present the improvement direction to be suitable to our country's economic circumstance.

• Journal of Applied Reliability
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• v.14 no.4
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• pp.256-261
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• 2014

Solar cells are considered ideal as a clean energy to generate electricity. However, silicon-based photoelectric cells show some shortcomings in efficiency, cost and reliability. This has been a barrier to further commercialization. This paper shows how 40 Inventive Principles can be used in the research and development on the solar cells to improve efficiency, cost and reliability.

• Proceedings of the KIEE Conference
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• 1998.11c
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• pp.919-921
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• 1998

In Color AC Plasma Display Panel(PDP). Low luminous efficiency is a major problem. We measured luminous efficiency of PDP as a function of the Ar mixing ratio. Our results show that efficiency has improved by $5{\sim}10%$ at the condition of 0.5% Ar mixing ratio, compared with Ne-Xe(4%) or He-Ne-Xe(4%) (He:Ne = 7:3) gas.

• Journal of Oriental Neuropsychiatry
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• v.10 no.1
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• pp.147-157
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• 1999

In order to confirm the efficiency of Oriental medical treatment on Vascular dementia, 24 probable and possible vascular dementia patients diagnosed by ADDTC criteria, were chosen and followed among the patients who had visited KOMC from April, 1996 to March, 1997. They were given herbal and acupuncture therapy, mainly focused on circulating qi(順氣)and removing phlegm(治痰) which is generally applied in early stage of cerebro-vascular disease, and then assessed by the improvement of stage according to the level of impairment, as proposed by APA. The results were as followed. 1. Out of 25 cases, 8 patients showed 2 grade improvement(++), 15 patients showed 1 grade improvement(+), and 1 patient showed no change. 2. The efficiency of treatment is higher when they're given treatment earlier. 3. The efficiency of treatment is higher when their symptoms are lighter. In conclusion, this study shows meaningful effect of Oriental medical treatment on vascular dementia and also shows that It's more effective in the case of short onset and mild symptom.

• Quality Improvement in Health Care
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• v.19 no.2
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• pp.68-80
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• 2013

Background: This study investigates improvements in non-value-added nursing activities in clinical work, in order to improve the efficiency and quality of nursing activities. Methods: The study was performed as a quality improvement project at a tertiary general hospital. The nursing activities that needed improvements were categories into admission care, discharge care, supply management, diagnostic work-up related activities, and others. The nursing time and frequency of non-value-added activities were compared across nine nursing units before and after implementation of the quality improvement program. Post-implementation patient and nurse satisfaction were subsequently analyzed. Result: Post-implementation, the time spent on non-value-added nursing activities was reduced and patients and nurses were satisfied with the improvements. Discussion: Reducing non-value-added activities in nursing can increase the work efficiency and ensure time for patient care, thus improving the quality of nursing care. For further study, accurate surveys on nursing activities based on nursing time are required.