4-（Methylnitrosamino）-1-（3-pyridyl）-1-butanone （NNK） is a potent and prevalent nitrosamine procarcinogen found in cigarette smoke. The aim of this work is to study alterations in peroxiredoxin （Prx） expression...4-（Methylnitrosamino）-1-（3-pyridyl）-1-butanone （NNK） is a potent and prevalent nitrosamine procarcinogen found in cigarette smoke. The aim of this work is to study alterations in peroxiredoxin （Prx） expression induced by NNK during carcinogenesis. Characterization of Prx genes from hamster was performed using bioinformatics.展开更多
The stationary phase of microbial growth is a very complex state regulated by various environmental and physiological factors. An intensive study of stationary phase could promote a comprehensive understanding of the ...The stationary phase of microbial growth is a very complex state regulated by various environmental and physiological factors. An intensive study of stationary phase could promote a comprehensive understanding of the complete life cycle of microorganisms, and may provide important insights into their adaptation to harsh and nutrient-depleted conditions. Although the underlying mechanisms have been weU-studied in bacteria and yeasts （Herman, 2002; Navarro Llorens et al., 2010）, less is known about this growth phase in archaea yet. The haloarchaeon Haloferax mediterranei has served as a good model for studying haloarchaeal physiology and metabolism for several decades because of its accelerated growth, remarkable metabolic ability and genomic stability （Han et al., 2012）. During stationary phase, H. mediterranei can produce halocin H4 （Cheung et al.,展开更多
INTRODUCTION In recent years, with the gradual improvement of road construction, the rapid increase of the number of motor vehicles, vehicle emissions and the current poor vehicle performance, poor vehicle maintenance...INTRODUCTION In recent years, with the gradual improvement of road construction, the rapid increase of the number of motor vehicles, vehicle emissions and the current poor vehicle performance, poor vehicle maintenance, higher emission factor and so on, air pollution caused by the traffic issues becomes the focus of people attention. The harmful substances are gradually accumulated to atmosphere particles surrounding roads due to dust particles （soil dusts, road dusts, construction dusts）, coal emissions, industrial emissions, vehicle emissions, biomass burning, secondary particles, which has a certain harmful influence to the atmosphere, soil and plants surrounding roads.展开更多
The paper focuses on the four soldiers away from the battle field depicted in the short story vips oftke nation written by Frank O＇Conner. The character analysis is achieved by the reflection of the human nature wh...The paper focuses on the four soldiers away from the battle field depicted in the short story vips oftke nation written by Frank O＇Conner. The character analysis is achieved by the reflection of the human nature when the soldiers were temporarily living peacefully and their painful conflicts between duty as soldiers and human nature as men. Through the tragic fate of both the two executed Englishmen and the executors--two Irish men, the cruelty of the war is strongly condemned. The war mercilessly defeated the human nature cultivated through the friendship and knowing with each other.展开更多
Emily,the heroine in William Faulkner's short story A Rose for Emily,is a sacrifice to the disintegrating Old South culture.She performs the functions of a symbol of a system and culture and acts as the spiritual ...Emily,the heroine in William Faulkner's short story A Rose for Emily,is a sacrifice to the disintegrating Old South culture.She performs the functions of a symbol of a system and culture and acts as the spiritual pillar supporting the disintegrating Old South.There is a close relationship between Emily's high social position,her background,her fortune,her personality,inner thoughts and her tragedy.The paper tries to make brief analysis of Emily's tragic life from aspects of expressive techniques,symbolism,and Emily's personal characteristics.展开更多
Two measurement techniques are investigated to characterize photodetector linearity. A model for the two-tone and three-tone photodetector systems is developed to thoroughly investigate the influences of setup compone...Two measurement techniques are investigated to characterize photodetector linearity. A model for the two-tone and three-tone photodetector systems is developed to thoroughly investigate the influences of setup components on the measurement results. We demonstrate that small bias shifts from the quadrature point of the modulator will induce deviation into measurement results of the two-tone system, and the simulation results correspond well to experimental and calculation results.展开更多
Six first row transition metal complexes with 1,6-bis（2′-pyridyl）-2,5-dithiahexane（Py;S;）, namely, MnPy;S;Cl;（1）, FePy;S;Cl;（2）, Co Py;S;Cl（3）, CoPy;S;（SCN）;（4）, NiPy;S;（SCN）;（5） and NiPy;S;（N;）;...Six first row transition metal complexes with 1,6-bis（2′-pyridyl）-2,5-dithiahexane（Py;S;）, namely, MnPy;S;Cl;（1）, FePy;S;Cl;（2）, Co Py;S;Cl（3）, CoPy;S;（SCN）;（4）, NiPy;S;（SCN）;（5） and NiPy;S;（N;）;（6）, have been synthesized. A mixture of MCl;·x H;O（M = Mn, Co） in MeOH（FeCl;·4H;O in MeCN） and the stoichiometric amount of Py;S;was stirred for 4 h at room temperature, then these aiming products 1, 2 and 3 could be obtained by purification. A mixture of MPy;S;Cl;（M = Co, Ni） in MeOH and two equivalents of KSCN or NaN;was stirred for 4 h at room temperature. After that, complexes 4, 5 and 6 could be got by purifying. For 1, 2, 3, 4 and 5, the metal centers are hexa-coordinated in a similar distorted octahedral geometry and the crystal structures have the same space group Pbcn. The crystal structure of compound 6 belongs to monoclinic with space group P21/c. The coordinated atoms around M（Ⅱ） are two pyridyl N atoms(N（1） and N（2）), two thioether S atoms(S（1） and S（2）) and two chloride ions(Cl（1） and Cl（2）) in compounds 1, 2, and 3, but in 4, 5, and 6, two chloride ions(Cl（1） and Cl（2）) are replaced by another two N atoms from N;or NCS;.展开更多
Understanding the flow mechanisms between hydrocarbons and interfaces in nanopores is critical for fluid supply in tight reservoirs with huge reserves.In this paper,the nanoscale liquid-solid interface interaction pot...Understanding the flow mechanisms between hydrocarbons and interfaces in nanopores is critical for fluid supply in tight reservoirs with huge reserves.In this paper,the nanoscale liquid-solid interface interaction potential is analyzed based on the molecular interface theory,and a new nanoscale fluid viscosity model is constructed through the Eyring model,and the fluid velocity and flow flux models in nanopores are derived based on the liquid-solid interface slip condition.In addition,n-pentane flow characteristics in quartz nanopores were investigated with key parameters including:the Hamaker constant,the decay length,the wetting angle,the boundary slip and the flux coefficient.The proposed model is validated in a comparison of theory,simulation and laboratory results.The study results show:(1)influenced by the liquid-solid interfacial effect,there is a viscosity gap between the fluid in the bulk and at the boundary,resulting in a non-linear variation of the flow velocity.Of the multiple microscopic forces considered by the model,Ligshitz-Van der Waals force has the strongest effect in confined pores below 40 nm,and electrostatic force has the weakest effect.When the pore diameter less than 10 nm,the constrained fluid viscosity was improved above 4 times.(2)based on the microscopic liquid-solid interface slip condition,a constrained space velocity model is derived,which indicates that the flow is directly dependent on the effective shear stresses on the fluid and the strength of the liquid-solid interface effect.Under the low shear stress in a tight reservoir,the slip at the liquid-solid interface has obvious linear characteristics,and the slip velocity depends on the effective shear stress.The liquid-solid interfacial effect parameter is increased from 1 to 30,and the slip velocity is reduced to 3.2Å/ps,which is a 55%reduction.(3)in this paper,the hamaker constant of n-pentane-quartz interface based on the molecular spacing variation and the decay constant for different water types and solute concentrations are obtained,and the effect of the decay length on the flow coefficient of the nano confined flow model is explored for different pore radiuses.The flux coefficient increases with pore radius,and the effect of the decay length is greater for pores<100 nm.展开更多
Coded excitation technology （CET） can effectively enhance the penetration and resolution of ultrasonic testing. To analyze the influence of rock properties on pulse compression performance （PCP） of coded excitatio...Coded excitation technology （CET） can effectively enhance the penetration and resolution of ultrasonic testing. To analyze the influence of rock properties on pulse compression performance （PCP） of coded excitation signals （CES）, a numerical simulation, and an ultrasonic experiment on different rock samples are performed; and the detection ability of several CESs are also investigated and compared. The results of experiments showed that the loss of the signal-to-noise ratio （SNR） of Barker coded signal with tapered linear frequency modulated carrier （BTLFM） is always less than Barker coded signal with sine carrier （BS）, while the resolution loss of BTLFM is lower than tapered linear frequency modulated signal （TLFM）. In sum, the results not only verifiy the effectiveness of CET, but also provide a basis for the parameter settings of coded signals used in rock ultrasonic testing.展开更多
The present work demonstrates the effectiveness of combining the hydromechanical deep-drawing process with the Tailored Heat Treated Blank（THTB） technique. In the hydromechanical deep-drawing process, the fluid pres...The present work demonstrates the effectiveness of combining the hydromechanical deep-drawing process with the Tailored Heat Treated Blank（THTB） technique. In the hydromechanical deep-drawing process, the fluid pressure is used for postponing the fracture occurrence in the blank, while the THTB technique allows to create a material property gradient through a suitable artificial aging treatment carried out prior to the forming process. Since the number of process variables is large, in the present work the authors propose an optimization loop for the determination of the parameters controlling the extension of the blank regions to be subjected to the aging treatment and the temperature levels to be set during the heat treatment. The proposed methodology couples a simple finite element model（Abaqus） with a multiobjective optimization platform（mode FRONTIER）. A preliminary experimental campaign was carried out for determining the effect of the aging treatment on the mechanical（through tensile tests） and deformative（through formability tests）behavior of the AC170 PX aluminum alloy. Optimization results prove the effectiveness of the adopted methodology and put in evidence that the adoption of properly aged blanks in the hydromechanical deep drawing allows to increase the limit drawing ratio and to simplify the process since it is conducted at room temperature.展开更多
Many independent films provide a realistic interpretation of everyday events. Passive viewing techniques used by independent scriptwriters and filmmakers require active engagement from the viewer in order to interpret...Many independent films provide a realistic interpretation of everyday events. Passive viewing techniques used by independent scriptwriters and filmmakers require active engagement from the viewer in order to interpret characters and/or events. The following proposes that the ＂expositive puzzle＂ is an example of these techniques. It uses the fim Short Term 12 in order to demonstrate how the ＂expositive puzzle＂ works and to encourage use in real-world interactions in order to avoid interaction based on stereotypes.展开更多
A traffic matrix is a necessary parameter fornetwork management functions,and itsupplies a flow-level view of a largescale IP-over-WDM backbone network.This paper studies the problem of traffic matrix estimationand pr...A traffic matrix is a necessary parameter fornetwork management functions,and itsupplies a flow-level view of a largescale IP-over-WDM backbone network.This paper studies the problem of traffic matrix estimationand proposes an exact traffic matrix estimation approach based on network tomography techniques.The traditional network tomography model is extended to make it compatible with compressive sensing constraints.First,a stochastic perturbation is introduced in the traditional network tomography inference model.Then,an algorithm is proposed to achieve additional optical link observations via optical bypass techniques.The obtained optical link observations are used as extensions for the perturbed network tomography model to ensure that the synthetic model can meetcompressive sensing constraints.Finally,the traffic matrix is estimated from the synthetic model by means of a compressive sensing recovery algorithm.展开更多
The Three Idiots, has a Strong appreciation ,with excellent script, creative actor, sophisticated production, fine plot, the endless stream of jokes. It uses a variety of narrative technique and also gives insight to ...The Three Idiots, has a Strong appreciation ,with excellent script, creative actor, sophisticated production, fine plot, the endless stream of jokes. It uses a variety of narrative technique and also gives insight to audiences on the various time lines clearly, Dance also added a beautiful landscape to the film. We can learn from the achievements on Artistic and box office and it reflects the present situation of Indian society.展开更多
Taking Nathaniel Hawthorne’s Young Goodman Brown as an example,this paper analyzes the Puritan thought of“inherently evil human nature”embodied by the main characters in the work.Through the analysis of characters,...Taking Nathaniel Hawthorne’s Young Goodman Brown as an example,this paper analyzes the Puritan thought of“inherently evil human nature”embodied by the main characters in the work.Through the analysis of characters,such as Brown,Faith,and the mysterious old man,it shows the evil under Brown’s loyal and kind appearance,the devilish nature under Faith’s angelic appearance,and the evil of human nature revealed by everyone’s participation in the devil’s appointment.At the same time,it is pointed out that the novel not only reveals the life of Puritans,but also prompts readers to think about how to redeem themselves in the case of inherently evil human nature and explore the dark side of human nature and the deep themes of the novel against the dark and mysterious background.展开更多
George Willard, an innocent adolescent in Winesburg, Ohio by Sherwood Anderson, is in search of answers in life. He is the only one who leaves the town and pursues dream in Winesburg. What makes George Willard differe...George Willard, an innocent adolescent in Winesburg, Ohio by Sherwood Anderson, is in search of answers in life. He is the only one who leaves the town and pursues dream in Winesburg. What makes George Willard different from other grotesque so that he can finally be led to his full growth and achieve awakening? Therefore, this paper utilizes the method of text analysis to conduct a research from the perspective of character study and to analyze George's six qualities to achieve awakening and redeem other grotesques' lives, such as quality of understanding others, quality of ability to communicate with others,quality of action without hesitation, quality of deliberateness, quality of ability to love,and quality of innocence.展开更多
We give a new characterization of the paratingent cone in terms of contingent cones,i. e., the paratingent cone to any open set at a boundary point is the upper limit of the contingentcones at the neighboring points. ...We give a new characterization of the paratingent cone in terms of contingent cones,i. e., the paratingent cone to any open set at a boundary point is the upper limit of the contingentcones at the neighboring points. We use this result to characterize the strict differentiability in termsof the contingent directional derivatives. We also define a P-subderivative for continuous functionsand develop a subdifferential calculus with applications to optimality conditions in mathematicalprograming.展开更多
How were the Chinese characters created? And who created them? These questions about the origins of one of the world’s oldest collection of characters are beyond the comprehension of many native speakers, not to ment...How were the Chinese characters created? And who created them? These questions about the origins of one of the world’s oldest collection of characters are beyond the comprehension of many native speakers, not to mention foreigners who are only展开更多
基金supported by Doctor Foundation of Zhengzhou University of Light IndustryScientific and technological research projects in Zhengzhou City(141PPTGG399)Scientific and technological research projects in Henan province
文摘4-（Methylnitrosamino）-1-（3-pyridyl）-1-butanone （NNK） is a potent and prevalent nitrosamine procarcinogen found in cigarette smoke. The aim of this work is to study alterations in peroxiredoxin （Prx） expression induced by NNK during carcinogenesis. Characterization of Prx genes from hamster was performed using bioinformatics.
基金supported by the grants from the National Natural Science Foundation of China(Nos.30925001 and 31271334)the Chinese Academy of Sciences(No. KSCX2-EW-G-2-4)
文摘The stationary phase of microbial growth is a very complex state regulated by various environmental and physiological factors. An intensive study of stationary phase could promote a comprehensive understanding of the complete life cycle of microorganisms, and may provide important insights into their adaptation to harsh and nutrient-depleted conditions. Although the underlying mechanisms have been weU-studied in bacteria and yeasts （Herman, 2002; Navarro Llorens et al., 2010）, less is known about this growth phase in archaea yet. The haloarchaeon Haloferax mediterranei has served as a good model for studying haloarchaeal physiology and metabolism for several decades because of its accelerated growth, remarkable metabolic ability and genomic stability （Han et al., 2012）. During stationary phase, H. mediterranei can produce halocin H4 （Cheung et al.,
基金financially supported by National Major Scientific Instrument Equipment Development Special(2011YQ060111)
文摘INTRODUCTION In recent years, with the gradual improvement of road construction, the rapid increase of the number of motor vehicles, vehicle emissions and the current poor vehicle performance, poor vehicle maintenance, higher emission factor and so on, air pollution caused by the traffic issues becomes the focus of people attention. The harmful substances are gradually accumulated to atmosphere particles surrounding roads due to dust particles （soil dusts, road dusts, construction dusts）, coal emissions, industrial emissions, vehicle emissions, biomass burning, secondary particles, which has a certain harmful influence to the atmosphere, soil and plants surrounding roads.
文摘The paper focuses on the four soldiers away from the battle field depicted in the short story vips oftke nation written by Frank O＇Conner. The character analysis is achieved by the reflection of the human nature when the soldiers were temporarily living peacefully and their painful conflicts between duty as soldiers and human nature as men. Through the tragic fate of both the two executed Englishmen and the executors--two Irish men, the cruelty of the war is strongly condemned. The war mercilessly defeated the human nature cultivated through the friendship and knowing with each other.
文摘Emily,the heroine in William Faulkner's short story A Rose for Emily,is a sacrifice to the disintegrating Old South culture.She performs the functions of a symbol of a system and culture and acts as the spiritual pillar supporting the disintegrating Old South.There is a close relationship between Emily's high social position,her background,her fortune,her personality,inner thoughts and her tragedy.The paper tries to make brief analysis of Emily's tragic life from aspects of expressive techniques,symbolism,and Emily's personal characteristics.
基金Supported by the National Natural Science Foundation of China under Grant Nos 61574019,61674018 and 61674020the Fund of State Key Laboratory of Information Photonics and Optical Communicationsthe Specialized Research Fund for the Doctoral Program of Higher Education of China under Grant No 20130005130001
文摘Two measurement techniques are investigated to characterize photodetector linearity. A model for the two-tone and three-tone photodetector systems is developed to thoroughly investigate the influences of setup components on the measurement results. We demonstrate that small bias shifts from the quadrature point of the modulator will induce deviation into measurement results of the two-tone system, and the simulation results correspond well to experimental and calculation results.
基金supported by the NNSFC(Nos.21231003 and 21203195)
文摘Six first row transition metal complexes with 1,6-bis（2′-pyridyl）-2,5-dithiahexane（Py;S;）, namely, MnPy;S;Cl;（1）, FePy;S;Cl;（2）, Co Py;S;Cl（3）, CoPy;S;（SCN）;（4）, NiPy;S;（SCN）;（5） and NiPy;S;（N;）;（6）, have been synthesized. A mixture of MCl;·x H;O（M = Mn, Co） in MeOH（FeCl;·4H;O in MeCN） and the stoichiometric amount of Py;S;was stirred for 4 h at room temperature, then these aiming products 1, 2 and 3 could be obtained by purification. A mixture of MPy;S;Cl;（M = Co, Ni） in MeOH and two equivalents of KSCN or NaN;was stirred for 4 h at room temperature. After that, complexes 4, 5 and 6 could be got by purifying. For 1, 2, 3, 4 and 5, the metal centers are hexa-coordinated in a similar distorted octahedral geometry and the crystal structures have the same space group Pbcn. The crystal structure of compound 6 belongs to monoclinic with space group P21/c. The coordinated atoms around M（Ⅱ） are two pyridyl N atoms(N（1） and N（2）), two thioether S atoms(S（1） and S（2）) and two chloride ions(Cl（1） and Cl（2）) in compounds 1, 2, and 3, but in 4, 5, and 6, two chloride ions(Cl（1） and Cl（2）) are replaced by another two N atoms from N;or NCS;.
基金supported by the Key Program of the National Natural Science Foundation of China[No.U24B200683]Natural Science Foundation of Sichuan Provincial,China[No.2024NSFSC2012].
文摘Understanding the flow mechanisms between hydrocarbons and interfaces in nanopores is critical for fluid supply in tight reservoirs with huge reserves.In this paper,the nanoscale liquid-solid interface interaction potential is analyzed based on the molecular interface theory,and a new nanoscale fluid viscosity model is constructed through the Eyring model,and the fluid velocity and flow flux models in nanopores are derived based on the liquid-solid interface slip condition.In addition,n-pentane flow characteristics in quartz nanopores were investigated with key parameters including:the Hamaker constant,the decay length,the wetting angle,the boundary slip and the flux coefficient.The proposed model is validated in a comparison of theory,simulation and laboratory results.The study results show:(1)influenced by the liquid-solid interfacial effect,there is a viscosity gap between the fluid in the bulk and at the boundary,resulting in a non-linear variation of the flow velocity.Of the multiple microscopic forces considered by the model,Ligshitz-Van der Waals force has the strongest effect in confined pores below 40 nm,and electrostatic force has the weakest effect.When the pore diameter less than 10 nm,the constrained fluid viscosity was improved above 4 times.(2)based on the microscopic liquid-solid interface slip condition,a constrained space velocity model is derived,which indicates that the flow is directly dependent on the effective shear stresses on the fluid and the strength of the liquid-solid interface effect.Under the low shear stress in a tight reservoir,the slip at the liquid-solid interface has obvious linear characteristics,and the slip velocity depends on the effective shear stress.The liquid-solid interfacial effect parameter is increased from 1 to 30,and the slip velocity is reduced to 3.2Å/ps,which is a 55%reduction.(3)in this paper,the hamaker constant of n-pentane-quartz interface based on the molecular spacing variation and the decay constant for different water types and solute concentrations are obtained,and the effect of the decay length on the flow coefficient of the nano confined flow model is explored for different pore radiuses.The flux coefficient increases with pore radius,and the effect of the decay length is greater for pores<100 nm.
基金supported by the National Natural Science Foundation of China(41104117)
文摘Coded excitation technology （CET） can effectively enhance the penetration and resolution of ultrasonic testing. To analyze the influence of rock properties on pulse compression performance （PCP） of coded excitation signals （CES）, a numerical simulation, and an ultrasonic experiment on different rock samples are performed; and the detection ability of several CESs are also investigated and compared. The results of experiments showed that the loss of the signal-to-noise ratio （SNR） of Barker coded signal with tapered linear frequency modulated carrier （BTLFM） is always less than Barker coded signal with sine carrier （BS）, while the resolution loss of BTLFM is lower than tapered linear frequency modulated signal （TLFM）. In sum, the results not only verifiy the effectiveness of CET, but also provide a basis for the parameter settings of coded signals used in rock ultrasonic testing.
文摘The present work demonstrates the effectiveness of combining the hydromechanical deep-drawing process with the Tailored Heat Treated Blank（THTB） technique. In the hydromechanical deep-drawing process, the fluid pressure is used for postponing the fracture occurrence in the blank, while the THTB technique allows to create a material property gradient through a suitable artificial aging treatment carried out prior to the forming process. Since the number of process variables is large, in the present work the authors propose an optimization loop for the determination of the parameters controlling the extension of the blank regions to be subjected to the aging treatment and the temperature levels to be set during the heat treatment. The proposed methodology couples a simple finite element model（Abaqus） with a multiobjective optimization platform（mode FRONTIER）. A preliminary experimental campaign was carried out for determining the effect of the aging treatment on the mechanical（through tensile tests） and deformative（through formability tests）behavior of the AC170 PX aluminum alloy. Optimization results prove the effectiveness of the adopted methodology and put in evidence that the adoption of properly aged blanks in the hydromechanical deep drawing allows to increase the limit drawing ratio and to simplify the process since it is conducted at room temperature.
文摘Many independent films provide a realistic interpretation of everyday events. Passive viewing techniques used by independent scriptwriters and filmmakers require active engagement from the viewer in order to interpret characters and/or events. The following proposes that the ＂expositive puzzle＂ is an example of these techniques. It uses the fim Short Term 12 in order to demonstrate how the ＂expositive puzzle＂ works and to encourage use in real-world interactions in order to avoid interaction based on stereotypes.
基金supported in part by the National Natural Science Foundation of China(Nos.61571104,61071124,61501105)the General Project of Scientific Research of the Education Department of Liaoning Province(No.L20150174)+2 种基金the Program for New Century Excellent Talents in University(No.NCET-11-0075)the Fundamental Research Funds for the Central Universities(Nos.N150402003,N120804004,N130504003,N150404018)the State Scholarship Fund(201208210013)
文摘A traffic matrix is a necessary parameter fornetwork management functions,and itsupplies a flow-level view of a largescale IP-over-WDM backbone network.This paper studies the problem of traffic matrix estimationand proposes an exact traffic matrix estimation approach based on network tomography techniques.The traditional network tomography model is extended to make it compatible with compressive sensing constraints.First,a stochastic perturbation is introduced in the traditional network tomography inference model.Then,an algorithm is proposed to achieve additional optical link observations via optical bypass techniques.The obtained optical link observations are used as extensions for the perturbed network tomography model to ensure that the synthetic model can meetcompressive sensing constraints.Finally,the traffic matrix is estimated from the synthetic model by means of a compressive sensing recovery algorithm.
文摘The Three Idiots, has a Strong appreciation ,with excellent script, creative actor, sophisticated production, fine plot, the endless stream of jokes. It uses a variety of narrative technique and also gives insight to audiences on the various time lines clearly, Dance also added a beautiful landscape to the film. We can learn from the achievements on Artistic and box office and it reflects the present situation of Indian society.
文摘Taking Nathaniel Hawthorne’s Young Goodman Brown as an example,this paper analyzes the Puritan thought of“inherently evil human nature”embodied by the main characters in the work.Through the analysis of characters,such as Brown,Faith,and the mysterious old man,it shows the evil under Brown’s loyal and kind appearance,the devilish nature under Faith’s angelic appearance,and the evil of human nature revealed by everyone’s participation in the devil’s appointment.At the same time,it is pointed out that the novel not only reveals the life of Puritans,but also prompts readers to think about how to redeem themselves in the case of inherently evil human nature and explore the dark side of human nature and the deep themes of the novel against the dark and mysterious background.
文摘George Willard, an innocent adolescent in Winesburg, Ohio by Sherwood Anderson, is in search of answers in life. He is the only one who leaves the town and pursues dream in Winesburg. What makes George Willard different from other grotesque so that he can finally be led to his full growth and achieve awakening? Therefore, this paper utilizes the method of text analysis to conduct a research from the perspective of character study and to analyze George's six qualities to achieve awakening and redeem other grotesques' lives, such as quality of understanding others, quality of ability to communicate with others,quality of action without hesitation, quality of deliberateness, quality of ability to love,and quality of innocence.
文摘We give a new characterization of the paratingent cone in terms of contingent cones,i. e., the paratingent cone to any open set at a boundary point is the upper limit of the contingentcones at the neighboring points. We use this result to characterize the strict differentiability in termsof the contingent directional derivatives. We also define a P-subderivative for continuous functionsand develop a subdifferential calculus with applications to optimality conditions in mathematicalprograming.
文摘How were the Chinese characters created? And who created them? These questions about the origins of one of the world’s oldest collection of characters are beyond the comprehension of many native speakers, not to mention foreigners who are only
