Spillover Effects of US Monetary Policy on Asian Countries

Jianping Ding,Wei Ye,Yang Wu 한국APEC학회 2017 Journal of APEC Studies Vol.9 No.2

Ever since the global financial crises of 1997 and 2008, the recurrence of crises ledus evaluate the spillover effects of US monetary policy on Asian economies (Jan. 2005 - June 2017). This study makes precise use of various monetary policies (interest rate, money supply, exchange rate, and capital account) from the United States to different blocs (ASEAN, South Asian economies, and North Asia) and their spillover effects on the corresponding variables. Panel Vector Autoregression (PVAR) was applied in the cases. The findings are as follows. First, USD exchange rate volatility affects all Asian economies, ASEAN in particular; however, it doesn’t hold for the North Asian economies. For the exchange rate via SDR standard, only the South Asian countries are subjected to dollar volatility. The Fed money supply is ranked second in spillover effects, especially for the South Asian economies. The Fed’s policy interest exerts an impact on ASEAN, Northeast Asia, and South Asian economies. However, the US capital account movement only affects the latter two. The reasons behind the various intensities of spillover effects are interpreted accordingly. Regional location and size of economy might serve as an explanation for the spillover.

Interdecadal shift in the relationship between the East Asian summer monsoon and the tropical Indian Ocean

Ding, Ruiqiang,Ha, Kyung-Ja,Li, Jianping Springer-Verlag 2010 Climate dynamics Vol. No.

Decadal change of January and July persistence of monthly mean 500h ㎩ geopotential height anomalies

Ruiqiang Ding,Jianping Li,Kyung-Ja Ha 한국기상학회 2008 한국기상학회 학술대회 논문집 Vol.2008 No.-

Genome-wide association study reveals genetic loci and candidate genes for average daily gain in Duroc pigs

Quan, Jianping,Ding, Rongrong,Wang, Xingwang,Yang, Ming,Yang, Yang,Zheng, Enqin,Gu, Ting,Cai, Gengyuan,Wu, Zhenfang,Liu, Dewu,Yang, Jie Asian Australasian Association of Animal Productio 2018 Animal Bioscience Vol.31 No.4

Objective: Average daily gain (ADG) is an important target trait of pig breeding programs. We aimed to identify single nucleotide polymorphisms (SNPs) and genomic regions that are associated with ADG in the Duroc pig population. Methods: We performed a genome-wide association study involving 390 Duroc boars and by using the PorcineSNP60K Beadchip and two linear models. Results: After quality control, we detected 3,5971 SNPs, which included seven SNPs that are significantly associated with the ADG of pigs. We identified six quantitative trait loci (QTL) regions for ADG. These QTLs included four previously reported QTLs on Sus scrofa chromosome (SSC) 1, SSC5, SSC9, and SSC13, as well as two novel QTLs on SSC6 and SSC16. In addition, we selected six candidate genes (general transcription factor 3C polypeptide 5, high mobility group AT-hook 2, nicotinamide phosphoribosyltransferase, oligodendrocyte transcription factor 1, pleckstrin homology and RhoGEF domain containing G4B, and ENSSSCG00000031548) associated with ADG on the basis of their physiological roles and positional information. These candidate genes are involved in skeletal muscle cell differentiation, diet-induced obesity, and nervous system development. Conclusion: This study contributes to the identification of the casual mutation that underlies QTLs associated with ADG and to future pig breeding programs based on marker-assisted selection. Further studies are needed to elucidate the role of the identified candidate genes in the physiological processes involved in ADG regulation.

Writer Identification Based on Local Contour Distribution Feature

Hong Ding,Huiqun Wu,Xiaofeng Zhang,JianPing Chen 보안공학연구지원센터(IJSIP) 2014 International Journal of Signal Processing, Image Vol.7 No.1

Baseline Predictability of Daily East Asian Summer Monsoon Circulation Indices

Shucong Ai,Quanliang Chen,Jianping Li,Ruiqiang Ding,Quanjia Zhong 한국기상학회 2017 Asia-Pacific Journal of Atmospheric Sciences Vol.53 No.2

The nonlinear local Lyapunov exponent (NLLE) method is adopted to quantitatively determine the predictability limit of East Asian summer monsoon (EASM) intensity indices on a synoptic timescale. The predictability limit of EASM indices varies widely according to the definitions of indices. EASM indices defined by zonal shear have a limit of around 7 days, which is higher than the predictability limit of EASM indices defined by sea level pressure (SLP) difference and meridional wind shear (about 5 days). The initial error of EASM indices defined by SLP difference and meridional wind shear shows a faster growth than indices defined by zonal wind shear. Furthermore, the indices defined by zonal wind shear appear to fluctuate at lower frequencies, whereas the indices defined by SLP difference and meridional wind shear generally fluctuate at higher frequencies. This result may explain why the daily variability of the EASM indices defined by zonal wind shear tends be more predictable than those defined by SLP difference and meridional wind shear. Analysis of the temporal correlation coefficient (TCC) skill for EASM indices obtained from observations and from NCEP’s Global Ensemble Forecasting System (GEFS) historical weather forecast dataset shows that GEFS has a higher forecast skill for the EASM indices defined by zonal wind shear than for indices defined by SLP difference and meridional wind shear. The predictability limit estimated by the NLLE method is shorter than that in GEFS. In addition, the June-September average TCC skill for different daily EASM indices shows significant interannual variations from 1985 to 2015 in GEFS. However, the TCC for different types of EASM indices does not show coherent interannual fluctuations.

Dietary phosphorus deficiency impaired growth, intestinal digestion and absorption function of meat ducks

Huimin Xu,Shujun Dai,Keying Zhang,Xuemei Ding,Shiping Bai,Jianping Wang,Huanwei Peng,Qiufeng Zeng 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.12

Objective: An experiment was conducted to investigate the effects of dietary non-phytate phosphorus (nPP) deficiency on intestinal pH value, digestive enzyme activity, morphology, nutrient utilization, and gene expression of NaPi-IIb in meat ducks from 1 to 21 d of age. Methods: A total of 525 one-d-old Cherry Valley ducklings were fed diets (with 7 pens of 15 ducklings, or 105 total ducklings, on each diet) with five levels of nPP (0.22%, 0.34%, 0.40%, 0.46%, or 0.58%) for 21 d in a completely randomized design. Five experimental diets contained a constant calcium (Ca) content of approximately 0.9%. Body weight (BW), body weight gain (BWG), feed intake (FI), and feed to gain ratio (F:G) were measured at 14 and 21 d of age. Ducks were sampled for duodenum and jejunum digestion and absorption function on 14 and 21 d. Nutrient utilization was assessed using 25- to 27-d-old ducks. Results: The results showed ducks fed 0.22% nPP had lower (p<0.05) growth performance and nutrient utilization and higher (p<0.05) serum Ca content and alkaline phosphatase (ALP) activity. When dietary nPP levels were increased, BW (d 14 and 21), BWG and FI (all intervals), and the serum phosphorus (P) content linearly and quadratically increased (p<0.05); and the jejunal pH value (d 14), duodenal muscle layer thickness (d 14), excreta dry matter, crude protein, energy, Ca and total P utilization linearly increased (p<0.05); however, the serum ALP activity, jejunal Na+-K+-ATPase activity, and duodenal NaPi-IIb mRNA level (d 21) linearly decreased (p<0.05). Conclusion: The results indicated that ducks aged from 1 to 21 d fed diets with 0.22% nPP had poor growth performance related to poor intestinal digestion and absorption ability; but when fed diets with 0.40%, 0.46%, and 0.58% nPP, ducks presented a better growth performance, intestinal digestion and absorption function.

Micro-characteristics of Strength Reduction of Tuff Residual Soil with Different Moisture

Changqun Zuo*,,Daiguo Liu,Shaolin Ding,Jianping Chen 대한토목학회 2016 KSCE JOURNAL OF CIVIL ENGINEERING Vol.20 No.2

The weathered residual soil slope formed by the long term weathering of large igneous rock mass under the impact of abundant rainfall in southern China is prone to instability and deformation, causing wreak havoc. Therefore, it is very important to study the internal mechanisms of its instability and deformation induced by rainfall based on its special structural properties. In this paper, we 1) analyzed its mineral compositions using X-ray diffraction method, 2) obtained its shear strength parameters through quadruplet direct shear tests in the conditions of different moisture contents and dry-wet cycles, 3) studied its microstructure using Scanning Electron Microscopy (SEM), 4) quantitatively studied its porous distribution with the help of MATLAB image processing toolbox, and 5) established the fitting curve of fractal dimension and soil shear strength parameters of the tuff residual soil of Qishan landslide zone in Yongtai County, Fujian Province, China. The results indicated that 1) tuff residual soils are rich in clay minerals with lamination as the dominant microstructure, 2) moisture content and dry-wet cycle significantly affect soil microstructures as characterized with decreased pore size and increased pore number, and 3) soil mass has obvious fractal characteristics, the shear strength decreases gradually with the fractal dimension increasing and the fractal dimension has greater impact on soil cohesiveness than the angle of internal friction.

Assessment Based on the Forecast Error for the Transition Period between the Jianghuai Meiyu and North China Rainy Seasons in 2016

Jie Ma,Zhiping Zong,Li Jianping,Ruiqing Ding 한국기상학회 2021 Asia-Pacific Journal of Atmospheric Sciences Vol.57 No.3

During the transition period between the Jianghuai Meiyu and North China rainy seasons in 2016, there was a high-impact rainstorm event, connecting these two rainy seasons. However, both the short and medium range forecasts predicted a rain band that was too far south; this error can have serious implications for flood preparedness. This study discusses the causes of the forecast error using the ECMWF deterministic and ensemble models. The results show that the prediction of a too-weak westerly trough at the 500-hPa level is the dominant factor. Specifically, a weaker predicted 500-hPa westerly trough reduces the strength of the low vortex at 850 hPa; correspondingly, the shear line to the east of the vortex and the Meiyu front are weaker and farther south, and the monsoon is also weaker, which causes the large area of humidity convergence to be shifted southward. Finally, the heavy rainfall is located farther south with weaker intensity. And vice visa, when a stronger westerly trough is predicted, the location of rain band will be northward. This conclusion may be useful for meteorological decision making in medium range and will help to improve capabilities of risk reduction.

A Resting-state Functional Magnetic Resonance Imaging Study of Whole-brain Functional Connectivity of Voxel Levels in Patients With Irritable Bowel Syndrome With Depressive Symptoms

( Jie Li ),( Ping He ),( Xingqi Lu ),( Yun Guo ),( Min Liu ),( Guoxiong Li ),( Jianping Ding ) 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2021 Journal of Neurogastroenterology and Motility (JNM Vol.27 No.2

Background/Aims Depressive symptom is one of the most common symptoms in patients with irritable bowel syndrome (IBS), but its pathogenetic mechanisms remain unclear. As a voxel-level graph theory analysis method, degree centrality (DC) can provide a new perspective for exploring the abnormalities of whole-brain functional network of IBS with depressive symptoms (DEP-IBS). Methods DC, voxel-wise image and clinical symptoms correlation and seed-based functional connectivity (FC) analyses were performed in 28 DEP-IBS patients, 21 IBS without depressive symptoms (nDEP-IBS) patients and 36 matched healthy controls (HC) to reveal the abnormalities of whole brain FC in DEP-IBS. Results Compared to nDEP-IBS patients and HC, DEP-IBS patients showed significant decrease of DC in the left insula and increase of DC in the left precentral gyrus. The DC’s z-scores of the left insula negatively correlated with depression severity in DEP-IBS patients. Compared to nDEP-IBS patients, DEP-IBS patients showed increased left insula-related FC in the left inferior parietal lobule and right inferior occipital gyrus, and decreased left insula-related FC in the left precentral gyrus, right supplementary motor area (SMA), and postcentral gyrus. In DEP-IBS patients, abstracted clusters’ mean FC in the right SMA negatively correlated with depressive symptoms. Conclusions DEP-IBS patients have abnormal FC in brain regions associated with the fronto-limbic and sensorimotor networks, especially insula and SMA, which explains the vicious circle between negative emotion and gastrointestinal symptoms in IBS. Identification of such alterations may facilitate earlier and more accurate diagnosis of depression in IBS, and development of effective treatment strategies. (J Neurogastroenterol Motil 2021;27:248-256)