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Search Results: 1 - 10 of 40854 matches for " Kun Lu "
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Estimation of Building’s Life Cycle Carbon Emissions Based on Life Cycle Assessment and Building Information Modeling: A Case Study of a Hospital Building in China  [PDF]
Kun Lu, Hongyu Wang
Journal of Geoscience and Environment Protection (GEP) , 2019, DOI: 10.4236/gep.2019.76013
Abstract: Throughout the life cycle, the buildings emit a great deal of carbon dioxide into the atmosphere, which directly leads to aggravation in the greenhouse effect and becomes a severe threat to the environment and humans. Researchers have made numerous efforts to accurately calculate emissions to reduce the life cycle carbon emissions of residential buildings. Nevertheless, there are still difficulties in quickly estimating carbon emissions in the design stage without specific data. To fill this gap, the study, based on Life Cycle Assessment (LCA) and Building Information Modeling (BIM), proposed a quick method for estimating Building’s Life Cycle Carbon Emissions (BLCCE). Taking a hospital building in Chuzhou City, Anhui Province, China as an example, it tested its possibility to estimate BLCCE. The results manifested that: 1) the BLCCE of the project is 40,083.56 tCO2-eq, and the carbon emissions per square meter per year are 119.91 kgCO2-eq/(m2·y); 2) the stage of construction, operational and demolition account for 7.90%, 91.31%, and 0.79% of BLCCE, respectively; 3) the annual carbon emissions per square meter of hospital are apparently higher than that of villa, residence, and office building, due to larger service population, longer daily operation time, and stricter patient comfort requirements. Considering the lack of BLCCE research in Chinese hospitals, this case study will provide a valuable reference for the estimated BLCCE of hospital building.
Multi-Objective Optimal Dispatch Considering Wind Power and Interactive Load for Power System  [PDF]
Xinxin Shi, Guangqing Bao, Kun Ding, Liang Lu
Energy and Power Engineering (EPE) , 2018, DOI: 10.4236/epe.2018.104B001
Abstract:
With the rapid and large-scale development of renewable energy, the lack of new energy power transportation or consumption, and the shortage of grid peak-shifting ability have become increasingly serious. Aiming to the severe wind power curtailment issue, the characteristics of interactive load are studied upon the traditional day-ahead dispatch model to mitigate the influence of wind power fluctuation. A multi-objective optimal dispatch model with the minimum operating cost and power losses is built. Optimal power flow distribution is available when both generation and demand side participate in the resource allocation. The quantum particle swarm optimization (QPSO) algorithm is applied to convert multi-objective optimization problem into single objective optimization problem. The simulation results of IEEE 30-bus system verify that the proposed method can effectively reduce the operating cost and grid loss simultaneously enhancing the consumption of wind power.
Selection of Thickness of High Density Polyethylene Film for Mulching in Paddy Rice  [PDF]
Xiangchen Liu, Li Qiao, Zhaocheng Lu, Daqing Feng, Ping Li, Xuejun Fan, Kun Xu
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.47166
Abstract:

In water deficit area, judicious use of water is essential for increasing area under crop production with limited water supply. Film Mulching has been advocated as an effective means for conserving soil moisture in rice production. The effects of high density polyethylene (HDPE) film on increasing rice production, controlling weeds and residue amount of plastic were studied under five treatments, including 5, 10, 15 and 20 μm thickness as well as bare cultivation (CK). The results indicated that the HDPE film mulching mode had significant effects on weed control, soil temperature, soil moisture, photosynthetic rate, seedling biomass, yield and residues of plastic film. Combined with economic effect, it showed that the HDPE film of 10 μm is the best option for rice production.

Molecular Cloning, Characterization and Expression Analysis of Macrohage-Colony Stimulating Factor 2 Gene from Grass Carp (Ctenopharyngodon idellus)  [PDF]
Linyong Du, Lei Qin, Shangnian Wang, Lu Yang, Kun Yang, Xinyan Wang, Hong Zhou
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.510B046
Abstract:

Macrophage colony-stimulating factor (CSF-1/M-CSF) is a key factor for the differentiation, growth and survival of monocytes/macrophages and osteoclasts. The functions of M-CSF have been well characterized in mammals. In this study, we have cloned and sequenced the cDNA of M-CSF2 in grass carp. The grass carp M-CSF2 cDNA was 1487 bp in length, containing an open reading frame of 855 bp that encodes 284 amino acids. The deduced protein of grass carp M-CSF2 possessed same domains similar to its mammalian counterparts. Multiple alignments and phylogenetic tree indicate that the grass carp M-CSF2 exhibits close evolutionary relationship with its counterparts in other teleosts. Lastly, the tissue distribution results also showed that the grass carp M-CSF2 transcript was dominantly expressed in head kidney, kidney and spleen in vivo.

Correlation Analysis of Persistent Heavy Rainfall Events in the Vicinity of the Yangtze River Valley and Global Outgoing Longwave Radiation in the Preceding Month

TANG Yanbing,ZHAO Lu,GAO Kun,

大气科学进展 , 2009,
Abstract: Based on the National Oceanic and Atmospheric Administration (NOAA) daily satellite dataset of global outgoing longwave radiation (OLR) for the period of 1974--2004 and the NCEP-NCAR reanalysis for 1971--2004, the linkage between persistent heavy rainfall (PHR) events in the vicinity of the Yangtze River valley and global OLR leading up to those events (with 1- to 30-day lag) was investigated. The results reveal that there is a significant connection between the initiation of PHR events over the study area and anomalous convective activity over the tropical Indian Ocean, maritime continent, and tropical western Pacific Ocean. During the 30-day period prior to the onset of PHR events, the major significantly anomalous convective centers have an apparent dipole structure, always with enhanced convection in the west and suppressed convection in the east. This dipole structure continuously shifts eastward with time during the 30-day lead period. The influence of the anomalous convective activity over the tropical oceans on the initiation of PHR events over the study area is achieved via an interaction between tropical and extratropical latitudes. More specifically, anomalous convective activity weakens the Walker circulation cell over the tropical Indian Ocean first. This is followed by a weakening of the Indian summer monsoon background state and the excitation and dispersion of Rossby wave activity over Eurasia. Finally, a major modulation of the large scale background circulation occurs. As a result, the condition of a phase-lock among major large scale circulation features favoring PHR events is established over the study area.
3,3′-Dibenzyl-1,1′-[naphthalene-1,4-diylbis(methylene)]di(1H-imidazol-3-ium) bis(hexafluorophosphate)
Chang-Lu Liu,Kun Huang
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811032132
Abstract: In the title N-heterocyclic carbene compound, C32H30N42+·2PF6 , the mean plane of the naphthalene ring system makes dihedral angles of 79.15 (15) and 76.85 (16) with the imidazole rings and 56.15 (19) and 80.56 (16)° with the benzene rings. An intramolecular C—H...N hydrogen bond occurs. The crystal structure is stabilized by C—H...F interactions. In addition, π–π interactions [centroid–centroid distances = 3.848 (1) and 3.574 (3) ] are observed. The nine equatorial F atoms in the two PF6 anions were disordered over two positions with occupancy ratios of 0.545 (10):0.455 (10) and 0.793 (11):0.207 (11) in the two anions.
Very Early Onset Schizophrenia: A Case Study
Murat CO?KUN,Salih ZORO?LU
N?ropsikiyatri Ar?ivi , 2008,
Abstract: Very early onset schizophrenia (defined as an onset of psychosis before 13 years of age) is a rare and severe form of the disorder which is clinically and neurobiologically continuous with the adult-onset disorder. It is rarely reported under 6 years of age in the literature. Here we present a 5.5 -year-old girl who developed psychosis and discuss the clinical and familial features, diagnostic and treatment processes and one year follow-up of this particular case. (Archives of Neuropsychiatry 2008; 45: 142-5)
A Usability Evaluation Model for Academic Library Websites: Efficiency, Effectiveness and Learnability
Soohyung Joo,Suyu Lin,Kun Lu
Journal of Library and Information Studies , 2011,
Abstract: Purpose – This paper aimed to develop a usability evaluation model and associated survey tool in the context of academic libraries. This study not only proposed a usability evaluation model but also a practical survey tool tailored to academic library websites. Design/methodology – A usability evaluation model has been developed for academic library websites based on literature review and expert consultation. Then, the authors verified the reliability and validity of the usability evaluation model empirically using the survey data from actual users. Statistical analysis, such as descriptive statistics, internal consistency test, and a factor analysis, were applied to ensure both the reliability and validity of the usability evaluation tool. Findings – From the document analysis and expert consultation, this study identified eighteen measurement items to survey the three constructs of the usability, effectiveness, efficiency, and learnability, in academic library websites. The evaluation tool was then validated with regard to data distribution, reliability, and validity. The empirical examination based on 147 actual user responses proved the survey evaluation tool suggested herein is acceptable in assessing academic library website usability. Originality/Value – This research is one of the few studies to engender a practical survey tool in evaluating library website usability. The usability model and corresponding survey tool would be useful for librarians and library administrators in academic libraries who plan to conduct a usability evaluation involving large sample.
Two-Way Partial AUC and Its Properties
Kun Lu,Feifang Hu,Hanfang Yang
Statistics , 2015,
Abstract: To evaluate the performance of diagnostic tests, it is important to control both TPR (True Positive Rate) and FPR (False Positive Rate). In literature, most researchers proposed to control the partial area under the ROC curve (pAUC) with restrictions on FPR, which is called FPR-pAUC. FPR-pAUC is designed to artificially measure the area controlled by TPR and FPR, but is often misleading conceptually and practically. In this paper, we provide a new and intuitive method, named two-way pAUC, which is the partial area under the ROC curve with both horizontal and vertical restrictions. We also propose an estimator of two-way pAUC and obtain its theoretical properties. Compared with other existing tools, the two-way pAUC approach is more efficient to distinguish diagnostic tests. We also demonstrate two-way pAUC as a new and efficient tool to analyze the Wisconsin Breast Cancer Data, where TPR need to be limited in high level due to diagnosing a lethal disease.
Minor Omphalocele, Type IV Ileal Atresia, Congenital Ostomy  [PDF]
Barlas Etensel, Ali Onur Erdem, ?zge ?o?kun, ?brahim Meteo?lu, Münevver Kaynak Türkmen, Mustafa Harun Gürsoy
Open Journal of Pediatrics (OJPed) , 2014, DOI: 10.4236/ojped.2014.43024
Abstract:

Abstract: Omphalocele is often associated with the presence of other congenital anomalies. Isolated minor omphaloceles are known to have a favorable prognosis. Case reports have demonstrated nonclassical associations occurring in minor omphaloceles. Intestinal atresia is seldom described as being associated with minor omphaloceles. Special attention should be paid to intestinal exploration in small omphaloceles to avoid complications. Here we report a new association of a minor omphalocele, type IV ileal atresia and congenital ostomy.

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