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27篇 您的检索式:作者名="LIU ChengFang"
    题名 作者 年代 出处 被引量
1China's Labor Transition and the Future of China's Rural Wages and Employment显示文摘This paper contributes to the assessment of China's rural labor markets.According to our data,the increase in off-farm employment that China experienced during the 1980s and1990s continued during the 2000s.Our analysis shows that migration has become the most prevalent off-farm activity,although the destination of migrants is shifting from outside of one's province to destinations closer to home.The present paper finds that large shares of male and female individuals,especially those under 40 years,are working off the farm.These findings represent an important contribution to the labor economics field.First,the results of the present paper reveal that the labor transition from the agricultural sector to the non-agricultural sector for key segments of China's rural labor force is nearly complete.Second,although a large share of China's rural labor force work in agriculture,most of these workers are older men and women(and likely would not be willing to take low-wage,labor-intensive jobs).Third,the rising unskilled wage rate in China is partially a result of the tightening of the labor force in the young age cohorts.Finally,due to factors associated with the one child policy and other demographic transition forces,successive age cohorts will continue to fall in absolute number in the coming decade.Assuming China's growth continues,we expect to see further wage increases since it will take higher wages to coax more workers to work off the farm.Qiang Li Jikun Huang Renfu Luo Chengfang Liu 2013China & World Economy2013,21,3:16
2Exploiting Geo-Social Correlations to Improve Pairwise Ranking for Point-of-Interest Recommendation显示文摘Recently, as location-based social network(LBSN) rapidly grow, point-of-interest(POI) recommendation has become an important way to help people locate interesting places. Nowadays, there have been deep studies conducted on the geographical and social influence in the point-of-interest recommendation model based on the rating prediction. The fact is, however, relying solely on the rating fails to reflect the user's preferences very accurately, because the users are most concerned with the list of ranked point-of-interests(POIs) on the actual output of recommender systems. In this paper, we propose a co-pairwise ranking model called Geo-Social Bayesian Personalized Ranking model(GSBPR), which is based on the pairwise ranking with the exploiting geo-social correlations by incorporating the method of ranking learning into the process of POI recommendation. In this model, we develop a novel BPR pairwise ranking assumption by injecting users' geo-social preference. Based on this assumption, the POI recommendation model is reformulated by a three-level joint pairwise ranking model. And the experimental results based on real datasets show that the proposed method in this paper enjoys better recommendation performance compared to other state-of-the-art POI recommendation models.Rong Gao Jing Li Bo Du Xuefei Li Jun Chang Chengfang Song Donghua Liu 2018China Communications2018,15,7:9
3Zacopride selectively activates the Kir2.1 channel via a PKA signaling pathway in rat cardiomyocytes显示文摘We recently reported that zacopride is a selective inward rectifier potassium current (IK1 ) channel agonist, suppressing ventricular arrhythmias without affecting atrial arrhythmias. The present study aimed to investigate the unique pharmacological properties of zacopride. The whole-cell patch-clamp technique was used to study IK1 currents in rat atrial myocytes and Kir2.x currents in human embryonic kidney (HEK)-293 cells transfected with inward rectifier potassium channel (Kir)2.1, Kir2.2, Kir2.3, or mutated Kir2.1 (at phosphorylation site S425L). Western immunoblots were performed to estimate the relative protein expression levels of Kir2.x in rat atria and ventricles. Results showed that zacopride did not affect the IK1 and transmembrane potential of atrial myocytes. In HEK293 cells, zacopride increased Kir2.1 homomeric channels by 40.7%±9.7% at 50 mV, but did not affect Kir2.2 and Kir2.3 homomeric channels, and Kir2.1-Kir2.2, Kir2.1-Kir2.3 and Kir2.2-Kir2.3 heteromeric channels. Western immunoblots showed that similar levels of Kir2.3 protein were expressed in rat atria and ventricles, but atrial Kir2.1 protein level was only 25% of that measured in the ventricle. In addition, 5-hydroxytryptamine (5-HT) 3 receptor was undetectable, whereas 5-HT 4 receptor was weakly expressed in HEK293 cells. The Kir2.1-activating effect of zacopride in these cells was abolished by inhibition of protein kinase A (PKA), but not PKC or PKG. Furthermore, zacopride did not activate the mutant Kir2.1 channel in HEK293 cells but selectively activated the Kir2.1 homomeric channel via a PKA-dependent pathway, independent to that of the 5-HT receptor.ZHANG Li LIU QingHua LIU ChengFang ZHAI XuWen FENG QiLong XU RuiLing CUI XiangLi ZHAO ZhiQing CAO JiMin WU BoWei 2013Science China(Life Sciences)2013,56,9:7
4How Off-farm Employment Affects Technical Efficiency of China's Farms" The Case of Jiangsu显示文摘Linxiu Zhang Weiliang Su Tor Eriksson Chengfang Liu 2016China & World Economy2016,24,3:6
5Opening of the inward rectifier potassium channel alleviates maladaptive tissue repair following myocardial infarction显示文摘里面的整流器钾水流(IK1 ) 的激活隧道被报导了与室的心律不齐的抑制被联系。在这研究,我们测试了与 zacopride (ZAC ) IK1 隧道开在心肌的梗塞以后涉及织物修理的调整的假设。Sprague-Dawley 老鼠服从于冠的动脉结扎, ZAC intraperitoneally 被管理(15 諟?牦吗?Chengfang Liu Enli Liu Tiane Luo Weifang Zhang Rongli He 2016Acta Biochimica et Biophysica Sinica2016,48,8:4
6How Are Secondary Vocational Schools in China Measuring up to Government Benchmarks?显示文摘Drawing on a survey of 106 secondary vocational schools and 7309 students in two provinces of China,this descriptive paper assesses whether vocational schooling is measuring up to government benchmarks for quality and whether poor students are able to access quality schools.We find that secondary vocational schoob have met government benchmarks for teacher qualification and training,student opportunities for practical training and adequate facilities.Furthermore,poor students access schoob of similar quality to non-poor students,even though 34 percent of poor students do not receive financial aid.We conclude that recent policies are successfully ensuring secondary vocational school quality and equity of access to school quality between poor and non-poor students.However,financial aid policies should be re-examined,such that poor students receive sufficient coverage.Moreover,given that input-based measures only proxy school quality,the government should consider holding schoob accountable for outcomes such as student learning.Hongmei Yi Linxiu Zhang Chengfang Liu James Chu Prashant Loyalka May Maani Jianguo Wei 2013China & World Economy2013,21,3:4
7Effect of Migration on Children's Self-esteem in Rural China显示文摘China's rapid economic growth has been facilitated by its large volume of rural to urban migration.China's projected future development,especially increasing urbanization,implies that such migration will further intensify.However,migration does not come without cost.There are concerns about the potential negative impacts of migration on children 's care,education,and,in particular,the self-esteem of children left behind in villages where one or both parents have out-migrated to cities.In this paper,we employ unique survey data collected from Shaanxi Province,where more than 4700 ninth grade students from 36 rural junior high schools in five counties were surveyed in late 2011.The results show that having both parents migrate into cities significantly reduced children 's self-esteem.The effects are also gender sensitive.Girls that had a father or both parents who had out-migrated were inclined to have lower self-esteem than boys.Moreover,our study findings indicate that parental migration decreased children 's self-esteem more for individuals with initial low self-esteem.Xuefeng Zhan Shaoping Li Chengfang Liu Linxiu Zhang 2014China & World Economy2014,22,4:2
8Kinetics of absorp?tion of CO2 into aqueous blends of MDEA blended with DEA显示文摘Zhang Xu Zhang Chengfang Liu Yi 2002Ind Eng Chern Res2002,41,:1
9Studying on the steady-state and time-resolved fluorescence characteris- tics of melamine显示文摘Yang Chengfang Liu Ying Li Lei 2010Spectrochimica Acta Part A2010,75,:1
10Behaviors of coke deposition on SAPO-34 catalyst during methanol conversion to light olefins显示文摘Guozhen Qi Zaiku Xie Weimin Yang Siqing Zhong Hongxing Liu Chengfang Zhang Qingling Chen 2006Fuel Processing Technology2006,,5:1
11Protective effect of erythropoietin on β-amyloid-induced PC12 cell death through antioxidant mechanisms显示文摘Gang Li Rong Ma Chengfang Huang Qiang Tang Qin Fu Hui Liu Benrong Hu Jizhou Xiang 2008Neuroscience Letters2008,,2:1
12Kinetics of absorption of CO2 into aqueous solution of MDEA blended with DEA显示文摘ZHANG Xu ZHANG Chengfang LIU Yi 2002Industrial&Engineering Chemistry Research2002,41,5:1
13Characterization of the chemical fungicides-responsive and bacterial pathogen-preventing Bacillus licheniformis in rice spikelet显示文摘Seed-borne bacterial pathogens cause severe yield loss and biotoxin contamination in rice,leading to increasing concern on the global food supply and environmental safety.Plant native microbes play an important role in defending against diseases,but their actions are often influ-enced by the chemical fungicides applied in the field.Here,Bacillus licheniformis mmj was isolated from rice spikelet,which uniquely showed not only fungicide-responsiveness but also broad-spectrum antimicrobial activity against major rice bacterial pathogens including Xanthomonas oryzae pv.oryzae,Burkholderia plantari and Burkholderia glumae.To understand the hallmark underlying the environmental adaptation and anti-microbial activity of B.licheniformis mmj,the genome sequence was determined by SMRT and subjected to bioinformatics analysis.Genome sequence analysis enabled the identification of a set of antimicrobial-resistance and antibacterial activity genes together with an array of harsh environment-adaptive genes.Moreover,B.licheniformis mmj metabolites were analyzed with gas chromatography coupled to triple quadrupole mass spectrometry,and the volatile components that were linked with the antimicrobial activity were preliminarily profiled.Collectively,the present findings reveal the genomic and metabolic landscapes underlying fungicide-responsive B.licheniformis,which offers a new opportunity to design harsh environment-adaptive biopesticides to cope with prevalent bacterial phytopathogens.Chengfang Zhan Mengchen Wu Hongda Fang Xiaoyu Liu Jiuyue Pan Xiaoyan Fan Mengcen Wang Haruna Matsumoto 2023Food Quality and Safety2023,7,2:1
14Investing in rural China: tracking China's commitment to modernization 显示文摘Zhang Linxiu Renfu Luo Liu Chengfang 2006The Chinese Economy2006,39,4:1
15White Electroluminescence with Simultaneous Three-Color Emission from a Four-Armed Star-Shaped Single-Polymer System显示文摘有4,7二度的一个四手臂的塑造星的单个聚合物的系统(5-(4-( 9H-carbazol-9-yl )苯基) -4-hexylthiophen-2-yl)benzo[c][1,2,5]thiadiazole ( FTBT )作为一个红放射性的核心, polyfluorene ( PF )作为绿放射性的掺杂物作为蓝放射性的手臂和 1,3-benzo thiadiazole ( BT )被设计并且综合,在里面哪个红,绿,并且蓝色(红绿蓝)排放平衡能被小心地调整 FTBT 和 BT 的做的集中完成。一台典型 single-emissive-layer 设备(ITO/PEDOT : PSS/polymer/TPBI/LiF/Al ) 被学习并且讨论,与 1.59 cd·A −1 和 CIE 的发光效率(LE ) 认识到纯、稳定的白排出物协调(0.31, 0.34 ) 。设备的 high-color-quality 白人 electroluminescence 能主要从蓝 PF 手臂被归因于压制的分子间的相互作用,和部分精力转移到红、绿的掺杂物。Yuanda Jiu Jianyun Wang Chengfang Liu Wenyong Lai Lingling Zhao Xiangchun Li Yi Jiang Weidong Xu Xinwen Zhang Wei Huang 2015Chinese Journal of Chemistry2015,33,8:1
16Feminization of Agriculture in China? Debunking Myths Surrounding Women's Participation in Farming, China Quarterly 显示文摘Alan de Brauw Qiang Li Chengfang Liu Scott Rozelle Linxiu Zhang 2008(194): 327-3482008,,194:1
17Development Challenges, Tuition Barriers, And High School Education In China 显示文摘Liu Chengfang Linxiu Zhang and Renfu Luo 2009Asia Pacific Journal of Education2009,29,4:1
18Nutrition impacts of non-solid cooking fuel adoption on under-five children in developing countries显示文摘This paper examines the nutrition impacts of using non-solid cooking fuel on under-five children in developing countries.We draw on data from more than 1.12 million children in 62 developing countries from the Demographic and Health Surveys(DHS).Results from both fixed effects(FE)and instrumental variable(IV)estimates show that using non-solid cooking fuel significantly improves the nutrition outcomes of under-five children.Compared with their peers from households mainly using solid fuel,children from households mainly using non-solid fuel exhibit a lower probability of experiencing stunting(by 5.9 percentage points)and being underweight(by 1.2 percentage points).Our further investigation provides evidence for several underlying mechanisms,such as improved indoor air quality,induced reduction in children’s respiratory symptoms,benefits on maternal health,and reduction in maternal time spent on fuel collection or cooking.Heterogenous analyses suggest that the nutrition benefits of using non-solid cooking fuel are more prominent among boys,children above three years old,and those from households of lower socioeconomic status,rural areas,and Southeast Asia.Yalin Tang Yuhe Guo Gang Xie Chengfang Liu 2024Journal of Integrative Agriculture2024,23,2:1
19A comparative study of biodegradability of a carcinogenic aromatic amine (4,4' -Diaminodiphenylmethane) with OECD 301 test methods显示文摘MEI Chengfang LIU Yanzhen LONG Weinian 2015Ecotoxicology and Environ- mental Safety2015,111,:1
20College is a Rich, Han, Urban, Male Club: Research Notes from a Census Survey of Four Tier One Colleges in China *显示文摘Xiaobing Wang Chengfang Liu Linxiu Zhang Yaojiang Shi Scott Rozelle 2013The China Quarterly2013,,:1
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