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A multi-dimensional microcanonical Monte Carlo study of S_0→T_1 intersystem crossing of isocyanic acid

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Science China Chemistry 2009年第11期52卷 1885-1891页

作者： ZHANG Feng1,2,FANG WeiHai1,LUO Yi2 & LIU RuoZhuang1 1 College of Chemistry,Beijing Normal University,Beijing 100875,China 2 Theoretical Chemistry,School of Biotechnology,Royal Institute of Technology,S-10691 Stockholm,Sweden College of Chemistry Beijing Normal University Beijing China Theoretical Chemistry School of Biotechnology Royal Institute of Technology Stockholm Sweden

A general formula for the multi-dimensional Monte Carlo microcanonical nonadiabatic rate constant expressed in configuration space is applied to calculate the rate of intersystem crossing(ISC) between the ground(S0) and first excited triplet(T1) states for isocyanic ***-,two-and three-dimensional potential energy surfaces are constructed by coupled-cluster single-double CCSD calculations,which are used for Monte Carlo *** calculated S0→T1 ISC rate is in good agreement with experimental findings,which gives us a reason to believe that the multi-dimensional Monte Carlo microcanonical nonadiabatic rate theory is a very effective method for calculating nonadiabatic transition rate of a polyatomic molecule.

关键词： multi-dimensional Monte Carlo microcanonical nonadiabatic rate theory intersystem crossing isocyanic acid nonadiabatic transition

Evaluation of pedestrian crossing speed change patterns at unprotected mid-block crosswalks in India

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Journal of Traffic and Transportation Engineering(English Edition) 2020年第6期7卷 832-842页

作者： B.Raghuram Kadali P.Vedagiri Department of Civil Engineering National Institute of Technology WarangalWarcmgal 506004India Department of Civil Engineering Indian Institute of Technology BombayMumbai 400076India

The pedestrian crossing speed is one of the important factors in pedestrian crossing facility *** studies have shown that the pedestrian crossing speed is influenced by availability of green time at signalized crosswalks and pedestrian characteristics such as gender and ***,the effects of vehicular time gap and additional pedestrian behavioural characteristics on pedestrian crossing speed patterns have not been examined at unprotected(un-signalized)mid-block *** present study examines the pedestrian crossing speed change patterns considering the effect of vehicular time gap and pedestrian behavioural characteristics such as rolling behaviour,path change,etc.,at selected unprotected mid-block crosswalk locations under mixed traffic conditions in *** graphic survey has been conducted at eight selected unprotected mid-block crosswalk locations in Mumbai City for two to three hours duration during normal weather *** data was mined using AVS video editor software,and the extracted data includes pedestrian speed,pedestrian characteristics(gender and age),pedestrian behaviour(rolling behaviour,path change,etc.),vehicle characteristics(type and speed of the vehicle)and traffic *** crossing speed change patterns(whether pedestrian is changing speed or not while crossing a road)was considered as a binary variable and a logistic regression model was developed with vehicular gaps and other pedestrian behavioural characteristics as independent *** results revealed that there is a reduction in pedestrian crossing speed change behaviour with an increase in vehicular gap size at unprotected mid-block *** younger pedestrians have more probability of exhibiting crossing speed change patterns as compared to the elderly pedestrians at mid-block ***,it is identified that there is an increase in pedestrian crossing speed with increase in vehicle speed as well as heavy vehicle type

关键词： Pedestrian behavior crossing Speed patterns Mid-block Vehicle gap

Mathematical formalization of the process of crossing individuals of different populations within the framework of the quasispecies model

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International Journal of Biomathematics 2021年第4期14卷 131-139页

作者： A.V.Sedelnikov Samara National Research University 443086 Samara Moskowskoe Shosse34Russia

This paper presents a mathematically formalized description of the process of crossing individuals of different populations as a break of the first kind of functional dependencies of the population state vector *** this case,the validity of the quasispecies model as a model of population development was *** practical interpretation of a mathematically formalized description is considered on the example of an artificial population of Lymantria *** results of the work can be used to assess the development parameters of both natural and artificial populations.

关键词： Quasispecies model crossing Lymantria dispar,artificial population

Optimism in crossing Brookly Ferry

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陕西师范大学学报（哲学社会科学版） 2004年第S2期33卷 438-440页

作者：安莉西安建筑科技大学外语系陕西西安710055

crossing Brookly Ferry is one of the most representative masterpieces composed by Walt Wiltman. In this pieces of writing, ones of the characteristics in this poem: optimism and unconventionality in its form are expre... 详细信息

关键词： crossing Brookly Ferry American literature Optimism

Inuence of Electron Donating Ability on Reverse Intersystem crossing Rate for One Kind of Thermally Activated Delayed Fluorescence Molecules

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Chinese Journal of Chemical Physics 2018年第3期31卷 291-299,367页

作者： Ming-lang Wang Jian-zhong Fan Li-li Lin Shandong Province Key Laboratory of Medical Physics and Image Processing Technology School of Physics and ElectronicsShandong Normal UniversityJinan 250014China Department of Electronics Peking UniversityBeijing 100871China

First-principles calculations are applied for investigating influence of electron donating ability of donor groups in eight thermally activated delayed fluorescence（TADF） molecules on their geometrical structures and transition properties as well as reverse intersystem crossing（RISC） processes. Results show that the diphenylamine substitution in the donor part can slightly change the bond angle but decrease bond length between donor and acceptor unit except for the lowest triplet state（Ti） of carbazole-xanthone molecule. As the electron donating ability of donor groups is increased, the overlap between the highest occupied molecular orbital（HOMO） and the lowest unoccupied molecular orbital（LUMO） is decreased. As the diphenylamine groups are added in donor part, the delocalization of HOMO is enlarged,which brings a decreased energy gap(△ES1-T1) between the lowest singlet excited state（S1）and T1 state. Furthermore, with the calculated spin-orbit coupling coefficient(HSO), one finds that the larger value of ■ is, the faster the RISC is. The results show that all investigated molecules are promising candidates as TADF molecules. Overall, a wise molecular design strategy for TADF molecules,in which a small △ES1-T1 can be achieved by enlarging the delocalization of frontier molecular orbitals with large separation between HOMO and LUMO, is proposed.

关键词： Thermally activated delayed fluorescence Donating ability Reverse intersystem crossing Spin-orbit coupling

crossing Borders: Negotiation of Dual Cultural Identity of Chinese American in Pangs of Love

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海外英语 2013年第16期 182-183页

作者：李林斌云南大学外国语学院云南昆明650091

David Wong Louie demonstrates the emotional pangs between the immigrant parent Mrs. Pang and her Americanized children in Pangs of Love. Through examining the source of the pangs, this paper argues that characters'pangs mainly stem from confrontations between their different cultural identities. Focusing on the way of dealing with conflicts of cultural identities in contemporary Chinese American families, this paper illuminates that Chinese Americans need to cross cultural borders and negotiate cultural identity between Chinese and American cultures under the circumstance of globalization.

关键词： crossing borders cultural identity pangs of love

Measurement and Simulation of Induced Voltage and Current on 110 KV crossing Transmission Lines under UHV AC Transmission Lines

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Energy and Power Engineering 2017年第4期9卷 635-643页

作者： Weiwei Pan Shoucheng Miu Guangkai Yu Tian Wu Bo Zhang State Grid Jinhua Power Supply Company Jinhua China China Electric Power Research Institute Wuhan China School of Electrical Engineering Wuhan University Wuhan China

The induced electricity of 110 kV transmission lines which cross the UHV AC transmission lines may threaten personal safety of the maintenance staff. In this paper, field measurement of the induced voltage and induced current on a 110 kV crossing line inside Jinhua in Zhejiang province is performed. The electrostatic induced voltage on the measured line is 12.24 kV. The power frequency electromagnetic field simulation model is established, and the calculation results are consistent with the measured. Influence factors analysis shows that the electrostatic induced voltage on the 110 kV line is 12.78 kV, the electromagnetic induced voltage is 12.3 V, the induced current through ground wire is less than 1A when the UHV lines operate at full load. The induced voltage and current decrease while the crossing distance increases. Parallel lines induction is much higher than crossing lines. The electromagnetic induced voltage after ground knife-switch shut down would exceed the human safety voltage 36 V while the crossing angle is less than 30?, so the temporary ground wire must be hanged to ensure safety of the maintenance staff.

关键词： UHV AC Transmission Lines crossing Induced Voltage Induced Current Field Measurement Simulation Calculation

Anomaly of the Anomalous Delays of the crossing Frequencies in Odd Proton Nuclei

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Chinese journal of nuclear physics 1994年第3期 211-216页

作者： Chen Yong-shou~(1,2) Lou Wen-dong~(1)((1)Institute of Atomic Energy,P.O.Box 275(18),Beijing 102413)((1)Institute of Theoretical Physics,Academia Sinica,Beijing 100080)

The anomaly,or the “V” shape feature,of the anomalous delays of the cros-sing frequencies of 1/2[541]bands observed in Ta isotopes was reproduced very well bythe present calculation based on the mean field theory and was interpreted as the inter-play of the deformation driving effect of the 1/2[541]proton orbit and the pairingmean fields for the first time.

关键词： Band crossing Odd proton nuclei Deformation drive

AN OBSERVATIONAL STUDY OF THE CHANGES IN THE INTENSITY AND MOTION OF TROPICAL CYCLONES crossing LUZON

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Tropical Cyclone Research and Review 2015年第3期4卷 95-109页

作者： WU MAN-CHI CHOY CHUN-WING Hong Kong Observatory

Tropical cyclones(TCs) moving across Luzon from east to west are likely to affect Hong Kong. As such, it is important for forecasters take into account the likely changes in intensity and movement characteristics of TCs crossing Luzon. 50 TCs in the period 1980-2014 were examined to determine the effect of Luzon’s terrain on their intensity and *** results indicated that TCs generally weakened as they passed through the terrain of Luzon. The decrease in the maximum sustained winds(MSW) for TCs with intensity of severe tropical storms or below was normally crossing Luzon. A TC defl ected to the right(left) before landfall was likely to defl ect to the left(right) after leaving Luzon. Also, defl ection upon/near landfalling is found to be related to the intensity, moving speed and the direction of motion of a TC.

关键词： AN OBSERVATIONAL STUDY OF THE CHANGES IN THE INTENSITY AND MOTION OF TROPICAL CYCLONES crossing LUZON AP TC Figure