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A Study on Economic and Environmental Evaluation of Building Integrated Photovoltaic in Daegu (대구광역시 건축물 적용 태양광발전시스템의 경제성 및 환경성 평가에 관한 연구)

  • Soh, Jae-Eak;Kim, Ju-Young;Hong, Won-Hwa
    • Proceedings of the SAREK Conference
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    • 2006.06a
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    • pp.1232-1237
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    • 2006
  • In Daegu, spread works of photovoltaic have were carrying out from a part of the solar city Daegu but, actual results have were insignificant. According to this study, it analyzed actual conditions of four building integrated photovoltaic system proper to the subject of investigation in Daegu City, in order to investigate the cause of inactive spread of building integrated photovoltaic system. After analyzing of actual state and performance, this study will present not only economic evaluation that Is problem of spread but also, environment evaluation by estimating to have an effect on greenhouse gas reduction.

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Seismic retrofit system made of viscoelastic polymer composite material and thin steel plates

  • Nasab, Mohammad Seddiq Eskandari;Chun, Seungho;Kim, Jinkoo
    • Steel and Composite Structures
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    • v.43 no.2
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    • pp.153-164
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    • 2022
  • In this study, a series of cyclic loading tests were performed on viscoelastic dampers (VED) composed of viscoelastic polymer composite material and thin steel plates to observe the variation of the mechanical properties under different loading conditions. A mathematical model was developed based on the Kelvin-Voigt and Bouc-Wen models to formulate the nonlinear force-displacement relationship of the viscoelastic damper. The accuracy of the proposed mathematical model was verified using the data obtained from the tests. The mathematical model was applied to analyze a reinforced concrete framed structure retrofitted with viscoelastic dampers. Nonlinear dynamic analysis results showed that the average maximum inter-story drift ratios of the retrofitted structure met the target limit state after installing the VED. In addition, both the maximum and residual displacements were significantly reduced after the installation of the VED.

Fuzzy Neural Network Active Disturbance Rejection Control for Two-Wheeled Self-Balanced Robot

  • Wang, Chao;Jianliang, Xiao;Zhang, Cheng
    • Journal of Information Processing Systems
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    • v.18 no.4
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    • pp.510-523
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    • 2022
  • Considering the problems of poor control effect, weak disturbance rejection ability and adaptive ability of two-wheeled self-balanced robot (TWSBR) systems on undulating roads, this paper proposes a fuzzy neural network active disturbance rejection controller (FNNADRC), that is based on fuzzy neural network (FNN) for online correction of active disturbance rejection controller (ADRC)'s nonlinear control rate. Firstly, the dynamic model of the TWSBR is established and decoupled, the extended state observer (ESO) is used to compensate dynamically and linearize the upright and displacement subsystems. Then, the nonlinear PD control rate and FNN are designed, and the FNN is used to modify the control parameters of the nonlinear PD control rate in real time. Finally, the proposed control strategy is simulated and compared with the traditional ADRC and fuzzy active disturbance rejection controller (FADRC). The simulation results show that the control effect of the proposed control strategy is slightly better than ADRC and FADRC.

The Effect of Organisational Structure on Quality Management in Public Hospitals in a Developing Nation: A Comparative Study Between District, State and National Level Hospitals in Malaysia

  • Manaf Noor Hazilah Abd.
    • International Journal of Quality Innovation
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    • v.7 no.1
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    • pp.161-176
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    • 2006
  • The objective of the study was to empirically assess the practice of quality management among employees of Malaysian public hospitals at the district, state and national level hospitals. Comparative analysis on the practice of quality management was made among the three groups of hospitals. Self-administered questionnaire was the main method of data collection. Twenty-three public hospitals throughout Peninsular Malaysia participated in the survey. Practice of quality management was found to be significantly higher in district hospitals than in the national referral centre, which is based in the capital city of Kuala Lumpur. However, there was no significant difference in perception of implementation outcome between the three levels of hospitals. Among the factors of quality management, teamwork was found to be significantly higher in district hospitals than in state hospitals and the national referral centre. Leadership and management commitment was found to be significantly higher in district and state hospitals than in the national referral centre. The effect of organizational structure could have an effect on practice of quality management.

Free vibration analysis of FGP nanobeams with classical and non-classical boundary conditions using State-space approach

  • Tlidji, Youcef;Benferhat, Rabia;Daouadji, Tahar Hassaine;Tounsi, Abdelouahed;Trinh, L.Cong
    • Advances in nano research
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    • v.13 no.5
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    • pp.453-463
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    • 2022
  • This paper aims to investigate the vibration analysis of functionally graded porous (FGP) beams using State-space approach with several classical and non-classical boundary conditions. The materials properties of the porous FG beams are considered to have even and uneven distributions profiles along the thickness direction. The equation of motion for FGP beams with various boundary conditions is obtained through Hamilton's principle. State-space approach is used to obtain the governing equation of porous FG beam. The comparison of the results of this study with those in the literature validates the present analysis. The effects of span-to-depth ratio (L/h), of distribution shape of porosity and others parameters on the dynamic behavior of the beams are described. The results show that the boundary conditions, the geometry of the beams and the distribution shape of porosity affect the fundamental frequencies of the beams.

Cocoon Yield Pattern and Analysis of Water, Soil and Leaves from Mulberry Gardens Irrigated with Polluted Water Around Bangalore, India

  • Chandrakala, M.V.;Maribashetty, V.G.;Aftab Ahamed, C.A.;Jyothi, H.K.
    • International Journal of Industrial Entomology and Biomaterials
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    • v.18 no.2
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    • pp.97-103
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    • 2009
  • Sericulturists in the vicinity of Bangalore city irrigate their mulberry gardens with Vrishabhavathy stream water, which is polluted with domestic and industrial wastes from the city. To investigate the effect of pollutants on silkworm crops, a detailed field survey was conducted to study the cocoon yield pattern of the crops raised on mulberry irrigated with wastewater as against irrigation by bore/open wells. The villages along the stream were grouped into five test batches at about a distance of $5{\sim}8$ km from each other. The seasonal yield data with relevant information were collected through questionnaires from 117 rearers using stream water and 35 rearers using bore/open wells, the latter serving as control group. The average yield for 100 layings was 46 to 57 kg in the control group whereas in test groups, it ranged between 34 to 51 kg in the first test group and 22 to 38 kg in the rest. The difference in yield was $9{\sim}19$ kg depending on the season between control and test batches. In summer, this difference was higher, with high co-efficient of variation in test groups ($33{\sim}52$%). Further, water, soil and leaf samples were collected from selected rearers and were analyzed for zinc, copper, iron, lead and nickel. Results indicated significantly higher contents of these metals in samples from gardens using wastewater when compared control samples. Significantly (p<0.05 & p<0.01)) higher levels of zinc ($24{\sim}122$ ppm) and iron ($208{\sim}683$ ppm) were noticed in mulberry leaves during summer followed by winter and rainy season. The significance of high content of heavy metals in mulberry leaves and cocoon yield pattern of this area in relation to the quality of irrigation water is discussed.

Developing A Revitalization Planning and Design Guideline for Enhancing Land Use Performance of a Shrinking City

  • Yang, Shu;Kim, Jun-Hyun;Sohn, Wonmin;Kotval-K, Zeenat
    • Journal of People, Plants, and Environment
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    • v.23 no.4
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    • pp.387-398
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    • 2020
  • Background and objective: Land vacancy is a persistent issue in most urban areas in the United States, yet few case studies have examined how vacant lots are used and the functions they serve in local communities. The purposes of this study were to provide a new revitalization planning and design proposal for the Durant-Tuuri-Mott (DTM) target area in the shrinking city of Flint, MI, USA, and to assess the final planning and design guideline through an analysis of vacant land redevelopment alternatives. Methods: For developing a revitalization planning and design guideline, this study developed several design modules with three main design themes. Then, landscape performance of the final design proposals was analyzed by three development scenarios, based on implementation level: 100%, 75%, and 50%. These development scenarios were based on the local context and different implementation budgets needed to adopt the proposed design modules. To generate a comprehensive development plan by optimizing design module allocation in the study area, this research employed a system-oriented approach, analyzing the existing cultural, natural, and built environments. A community participant process was adopted to collect stakeholders' opinions on future development. Results: By utilizing landscape performance metrics to quantify the environmental, social, and economic benefits, this study developed optimized development scenarios and a master plan for the reuse and redevelopment of existing vacant lots across DTM neighborhoods and analyzed the benefits of each. Conclusion: This research offers a flexible design method for balancing objectives in vacant land redevelopment that can be applied in other shrinking cities.

Effects of high Cell Density on growth-Associated Monoclonal Antibody Production by Hybridoma T0405 Cells Immobilized in Macroporous Cellulose carriers

  • Hideki Mochoda;Wang, Pi-Chao;Fr Jr. Nayve;Ryuji Sato;Minoru Harige;Nakao Nomura;Masatoshi Matsumura
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.5 no.2
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    • pp.110-117
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    • 2000
  • Relationship between monoclonal antibody (MAb) productivity and growth rate, and effects of high cell density on MAb production rate increased with increasing specifis growth rate in both suspended and immobilized continuous cultures indicate a positively growth-associated relationship between MAb productivity and growth rate. moreover, the specific production rate was higher in the immobilized cell culture than that in suspended one at all dilution rates. In order to clarify these phenomana, MAb mPNA experession and cell cycle distribution were investigated in bacth cultures with immobilized cells and suspended cells. RT-PCR was used for observation of MAb mRNA expression and a two-color bromodeoxyuridine (BrdU)/propidium iodide (PI) flow cytometry method for determination of cell cycle distribution. The results revealed that MAb nRNA expression until dead phase, which was longer than in suspended cell. The cell cycle distribution patterns were observed almost the same for both immobilized and suspended cells. Such results may imply that a high cell density state has positive influence on the mRNA expression and on growth-associated Mab productivity of T0405 cells.

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A Comparative Study on the Relation between the Scholastic Achievement Test and the Intelligence according to the Area - Centering around the Scholastic Achievement Test of University - (지역간(地域間) 학력고사(學力考査)와 지능(知能)에 대(對)한 비교연구(比較硏究) -대학학력고사(大學學力考査)를 중심(中心)으로-)

  • Ryu Hui-Yeong;Kim Jeong-Hwa
    • Journal of Oriental Neuropsychiatry
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    • v.1 no.1
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    • pp.81-93
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    • 1990
  • On the Scholastic Achievement Test grads it was compared Chung Nam's with Cheon Puk by dividing a city, a farm village, a fishing village and a mountine village. The results were as follows ; 1. The regional difference of arerage grades were that the first is a large city, the second amiddle city, the third a mountine villgae, the fourth a fishing village, the last a farm village all the same Chung Nam and Cheon Puk. 2. The grades of acity and a farm of Chung Nam are higher then these of Cheon Puk. 3. Cheon Puk is higher than Chung Nam on a middle city, a mountine and a fishing's grades. 4. The characteristic was that the region of non benefits of civilization effect obstruction of intelligence less than a city mountine village. 5. It is considered that the obstruction of intelligence may diminish when eating marine products at a fishing village than a city-fishing village by side dish. From the above results, acknowledging a regional charater, it is suggested that improrement of food life imitate city shund sublate lest the physiological function of Bie Wee(脾胃) should converse a puthological state, get out of the food life civilization misled abnormal food life to normal. Systemic study must continue for maintaining of tradition of regional difference food life. By that manner excellent food life civilization may creat. Therefore it is recognized that experience accumulation of Oriental Medicine theory also close contact food life, so may make constent effort.

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A Study on the Nutritional Status of Children Living in Rural Area and City Orphan Asylum -II. Hematological view- (농어촌(農漁村)과 시설거주(施設居住) 아동(兒童)의 영양상태(營養狀態)에 관(關)한 연구(硏究) -제2보(第2報) : 혈액성장(血液性狀)을 중심(中心)으로-)

  • Park, Bock-Hee
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.14 no.2
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    • pp.108-116
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    • 1985
  • This study was designed to investigate the nutritional anemic state and hematological findings of children, aged 11 and 12 years, living in Haenam Koon (living at home) and in Mokpo City (living in an orphan asylum) located in Chonnam. The mean red blood cell number of male was higher than female in both groups of living in the rural area and in the city orphan asylum (p<0.01), but the white blood cell count was not significantly different. The levels of average hemoglobin, hematocrit and mean corpuscular hemoglobin concentration of the children in both groups were similar, and 19.8% of children living at home in the rural area and 32.1% of children living in the city orphan asylum were anemic. The mean levels of serum total protein, albumin and A/G ratio in children of both group were not statistically different, and 18.4% of children living at home in the rural area and 13.2% of children living in the city orphan asylum were insufficient in the serum total protein value. The average serum cholesterol level of children living at home in the rural area was higher than that of children living in the city orphan asylum(p<0.01), and that of female living at home was higher than that of male (p<0.05). The mean levels of serum iron, total iron binding capacity and transferrin saturation of children living at home in the rural area were significantly higher than those of children living in the city orphan asylum (p<0.01).

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