In this paper,the dynamical evolutions of two types of Arctic Oscillation (AO),the stratospheric (S) and tropospheric (T) types,have been investigated on an intermediate time scale in terms of transient eddy feedback ...In this paper,the dynamical evolutions of two types of Arctic Oscillation (AO),the stratospheric (S) and tropospheric (T) types,have been investigated on an intermediate time scale in terms of transient eddy feedback forcing and three-dimensional Rossby wave propagation.S-Type (T-type) events are characterized by an anomalous stratospheric polar vortex that is in phase (out of phase) with its tropospheric counterpart.Approximately onethird of AO events,both positive and negative,are T-type events.For the positive phase of a T-type event,the formation and maintenance of stratospheric positive anomalies over the polar cap are associated with an upward propagation of Rossby wave packets originating from the near-tropopause altitude over northeastern Asia.However,such upward propagating features are not found for S-type events.In the troposphere,transient eddy feedback forcing is primarily responsible for the meridional seesaw structure of both the S-and T-type events,with an additional contribution from Rossby wave propagation.展开更多
In this figure, it finds a vertex to another vertex k shortest path algorithm. Provided there are n vertices and edges in the diagram. If the path loops, the time complexity of the algorithm is allowed O(w + n log 2...In this figure, it finds a vertex to another vertex k shortest path algorithm. Provided there are n vertices and edges in the diagram. If the path loops, the time complexity of the algorithm is allowed O(w + n log 2 n + kw log 2 k). If the request path does not contain the loop, the time complexity of the algorithm O(kn(w + n log2 n)+ kw log2 k). The algorithm utilizes a simple extension of the Dijkstra algorithm determined the end of the length of the shortest path to the other vertices, and then, based on these data, branch and bound method to identify the required path. Experimental results show that the actual running time has relations with the structure of FIG.展开更多
The transverse vector vertex function in momentum space in four-dimensional QED is derived in terms of a set of transverse Ward-Takahashi relations for the vector and the axial-vector vertices in the case of massless ...The transverse vector vertex function in momentum space in four-dimensional QED is derived in terms of a set of transverse Ward-Takahashi relations for the vector and the axial-vector vertices in the case of massless fermion. It is demonstrated explicitly that the transverse vector vertex function derived this way to one-loop order leads to the same result as one obtained in perturbation theory. This provides a basic approach to determine the transverse part of basic vertex function from the symmetry relations of the system.展开更多
This paper reports an integrated study of in sire U-Pb geochronology and elemental geochemistry of zircons from the Xianglushan iron-polymetallic deposit in western Guizhou Province, Southwest China. Genetic relations...This paper reports an integrated study of in sire U-Pb geochronology and elemental geochemistry of zircons from the Xianglushan iron-polymetallic deposit in western Guizhou Province, Southwest China. Genetic relationship between this new type of deposit and unroofing of the Emeishan large igneous province (ELIP) is focused. Along with the zoning pattern in spatial distribution of diverse weathering-related deposits along the southern and southeastern margins of the ELIP, it is suggested that the genesis of the iron-polymetallic deposit was specialized by factors of coastal paleogeography in hot-humid climate, where iron-enriched laterites formed, and repetitive marine transgression-regression occurred during the Late Permian.展开更多
Objective:To compare the clinical efficacy between'warming-unblocking needling technique7 and reinforcing method by twirling in treating knee osteoarthritis(KOA)due to deficiency of liver and kidney.Methods:A tota...Objective:To compare the clinical efficacy between'warming-unblocking needling technique7 and reinforcing method by twirling in treating knee osteoarthritis(KOA)due to deficiency of liver and kidney.Methods:A total of 72 patients with KOA were divided into a warming-unblocking group and a reinforcing group by complete randomized method,with 36 cases in each group.Xuehai(SP 10),Heding(EX-LE 2),Liangqiu(ST 34);Neixiyan(EX-LE 4),Xizhong(Extra),Dubi(ST 35),Yinlingquan(SP 9),Zusanli(ST 36)and Yanglingquan(GB 34)were the main points in both groups.Taichong(LR 3),Taixi(Kl 3)and Sanyinjiao(SP 6)were the combined points.'Warming-unblocking needling technique'was applied in the warming-unblocking group,and reinforcing method by twirling was applied in the reinforcing group.The treatments were performed once a day,10 times as a treatment course,at a 2-day interval between two courses,for 3 courses in total.The scores of Western Ontario and McMaster Universities osteoarthritis index(WOMAC)in the two groups were observed before and after the treatment,and the clinical efficacy was compared.Results:After treatment,the total effective rate was 94.3%in the warming-unblocking group and 87.9%in the reinforcing group,and the difference between the two groups was statistically significant(P<0.05).The component scores of pain,stiffness and daily activities in WOMAC and total WOMAC scores in both groups decreased after treatment(all P<0.01).The component and total WOMAC scores in the warming-unblocking group were lower than those in the reinforcing group(P<0.05 or P<0.01).Conclusion:'Warming-unblocking needling technique' has significant efficacy than reinforcing method by twirling in treating KOA due to deficiency of liver and kidney.It can significantly improve pain,stiffness and daily functional activities of patients.展开更多
In the framework of the littlest Higgs model with T-parity (LHT), we study the top quark spin correlation and polarization at the International Linear Collider (ILC). We find that the top quark polarization asymme...In the framework of the littlest Higgs model with T-parity (LHT), we study the top quark spin correlation and polarization at the International Linear Collider (ILC). We find that the top quark polarization asymmetry δPt and the left-right asymmetry δALR can respectively reach -35% and -37.5% for s = 500 GeV and s = 1000 GeV via e+e- collision, which can reach the observable level at the ILC. By contrast, the spin correlation δC is smaller. The correlation behaviors of these observables at the e+e- collision and the yy, collision will be helpful to distinguish different models and test the LHT model at the ILC.展开更多
基金supported by the National Basic Research Program of China (973 Program) under Grant 2009CB421406the National Key Technologies R & D Programof China under Grant 2009BAC51B02
文摘In this paper,the dynamical evolutions of two types of Arctic Oscillation (AO),the stratospheric (S) and tropospheric (T) types,have been investigated on an intermediate time scale in terms of transient eddy feedback forcing and three-dimensional Rossby wave propagation.S-Type (T-type) events are characterized by an anomalous stratospheric polar vortex that is in phase (out of phase) with its tropospheric counterpart.Approximately onethird of AO events,both positive and negative,are T-type events.For the positive phase of a T-type event,the formation and maintenance of stratospheric positive anomalies over the polar cap are associated with an upward propagation of Rossby wave packets originating from the near-tropopause altitude over northeastern Asia.However,such upward propagating features are not found for S-type events.In the troposphere,transient eddy feedback forcing is primarily responsible for the meridional seesaw structure of both the S-and T-type events,with an additional contribution from Rossby wave propagation.
文摘In this figure, it finds a vertex to another vertex k shortest path algorithm. Provided there are n vertices and edges in the diagram. If the path loops, the time complexity of the algorithm is allowed O(w + n log 2 n + kw log 2 k). If the request path does not contain the loop, the time complexity of the algorithm O(kn(w + n log2 n)+ kw log2 k). The algorithm utilizes a simple extension of the Dijkstra algorithm determined the end of the length of the shortest path to the other vertices, and then, based on these data, branch and bound method to identify the required path. Experimental results show that the actual running time has relations with the structure of FIG.
基金The project supported by National Natural Science Foundation of China under Grant No. 90303006
文摘The transverse vector vertex function in momentum space in four-dimensional QED is derived in terms of a set of transverse Ward-Takahashi relations for the vector and the axial-vector vertices in the case of massless fermion. It is demonstrated explicitly that the transverse vector vertex function derived this way to one-loop order leads to the same result as one obtained in perturbation theory. This provides a basic approach to determine the transverse part of basic vertex function from the symmetry relations of the system.
基金supported by the National Natural Science Foundation of China(Grant Nos.41373037 and 41173048)Integrated Exploration Project of the Weining-Shuicheng Iron-Polymetallic Deposits,Guizhou Province
文摘This paper reports an integrated study of in sire U-Pb geochronology and elemental geochemistry of zircons from the Xianglushan iron-polymetallic deposit in western Guizhou Province, Southwest China. Genetic relationship between this new type of deposit and unroofing of the Emeishan large igneous province (ELIP) is focused. Along with the zoning pattern in spatial distribution of diverse weathering-related deposits along the southern and southeastern margins of the ELIP, it is suggested that the genesis of the iron-polymetallic deposit was specialized by factors of coastal paleogeography in hot-humid climate, where iron-enriched laterites formed, and repetitive marine transgression-regression occurred during the Late Permian.
文摘Objective:To compare the clinical efficacy between'warming-unblocking needling technique7 and reinforcing method by twirling in treating knee osteoarthritis(KOA)due to deficiency of liver and kidney.Methods:A total of 72 patients with KOA were divided into a warming-unblocking group and a reinforcing group by complete randomized method,with 36 cases in each group.Xuehai(SP 10),Heding(EX-LE 2),Liangqiu(ST 34);Neixiyan(EX-LE 4),Xizhong(Extra),Dubi(ST 35),Yinlingquan(SP 9),Zusanli(ST 36)and Yanglingquan(GB 34)were the main points in both groups.Taichong(LR 3),Taixi(Kl 3)and Sanyinjiao(SP 6)were the combined points.'Warming-unblocking needling technique'was applied in the warming-unblocking group,and reinforcing method by twirling was applied in the reinforcing group.The treatments were performed once a day,10 times as a treatment course,at a 2-day interval between two courses,for 3 courses in total.The scores of Western Ontario and McMaster Universities osteoarthritis index(WOMAC)in the two groups were observed before and after the treatment,and the clinical efficacy was compared.Results:After treatment,the total effective rate was 94.3%in the warming-unblocking group and 87.9%in the reinforcing group,and the difference between the two groups was statistically significant(P<0.05).The component scores of pain,stiffness and daily activities in WOMAC and total WOMAC scores in both groups decreased after treatment(all P<0.01).The component and total WOMAC scores in the warming-unblocking group were lower than those in the reinforcing group(P<0.05 or P<0.01).Conclusion:'Warming-unblocking needling technique' has significant efficacy than reinforcing method by twirling in treating KOA due to deficiency of liver and kidney.It can significantly improve pain,stiffness and daily functional activities of patients.
文摘In the framework of the littlest Higgs model with T-parity (LHT), we study the top quark spin correlation and polarization at the International Linear Collider (ILC). We find that the top quark polarization asymmetry δPt and the left-right asymmetry δALR can respectively reach -35% and -37.5% for s = 500 GeV and s = 1000 GeV via e+e- collision, which can reach the observable level at the ILC. By contrast, the spin correlation δC is smaller. The correlation behaviors of these observables at the e+e- collision and the yy, collision will be helpful to distinguish different models and test the LHT model at the ILC.