For patients with chronic spinal cord injury,the co nventional treatment is rehabilitation and treatment of spinal cord injury complications such as urinary tract infection,pressure sores,osteoporosis,and deep vein th...For patients with chronic spinal cord injury,the co nventional treatment is rehabilitation and treatment of spinal cord injury complications such as urinary tract infection,pressure sores,osteoporosis,and deep vein thrombosis.Surgery is rarely perfo rmed on spinal co rd injury in the chronic phase,and few treatments have been proven effective in chronic spinal cord injury patients.Development of effective therapies fo r chronic spinal co rd injury patients is needed.We conducted a randomized controlled clinical trial in patients with chronic complete thoracic spinal co rd injury to compare intensive rehabilitation(weight-bearing walking training)alone with surgical intervention plus intensive rehabilitation.This clinical trial was registered at ClinicalTrials.gov(NCT02663310).The goal of surgical intervention was spinal cord detethering,restoration of cerebrospinal fluid flow,and elimination of residual spinal cord compression.We found that surgical intervention plus weight-bearing walking training was associated with a higher incidence of American Spinal Injury Association Impairment Scale improvement,reduced spasticity,and more rapid bowel and bladder functional recovery than weight-bearing walking training alone.Overall,the surgical procedures and intensive rehabilitation were safe.American Spinal Injury Association Impairment Scale improvement was more common in T7-T11 injuries than in T2-T6 injuries.Surgery combined with rehabilitation appears to have a role in treatment of chronic spinal cord injury patients.展开更多
The rising of aging and the declining of birth rates have forced the public to focus on the youth’s view on marriage.Based on critical discourse analysis and combined with Fairclough’s three-dimensional discourse an...The rising of aging and the declining of birth rates have forced the public to focus on the youth’s view on marriage.Based on critical discourse analysis and combined with Fairclough’s three-dimensional discourse analysis model,this paper builds a“Chinese media News Report Corpus on the topic of‘marriage’”whose news are collected from China Daily.It is found that the discourses are neutral and objective with regard to the advantages and disadvantages of marriage,but in general,it is still a traditional view of marriage that is inevitable and closely related to fertility.Although this is controlled by the policies and the social reasons including declining fertility rate,it deviates from the current view of the youth towards marriage,resulting in many serious consequences such as young people’s rejection.In addition,this research found that male and female have great differences in their views on marriage,and men’s resistance to marriage is far greater than that of women,which is departure from the public’s cognition.The reasons behind this need to be explored in order to solve the marriage and love problems of young people in today’s era and realize the healthy development of young marriage.展开更多
Rural marriage has characteristics such as close relationship with labor production,deep integration of traditional culture,shy and introverted expression of subjective emotions,and illegal and rough marriage.The civi...Rural marriage has characteristics such as close relationship with labor production,deep integration of traditional culture,shy and introverted expression of subjective emotions,and illegal and rough marriage.The civilization evolution of rural marriage forms is moving towards a path that is conducive to the development of production and the pursuit of happiness for farmers,the construction of rural spiritual civilization,and the comprehensive development of rural society.This study analyzes the direction of the evolution of rural marriage form civilization,predicts the trend of rural marriage form civilization evolution,and proposes the future path of rural marriage form civilization evolution,including adhering to human’s most original value expectations of marriage life,drawing nourishment from excellent traditional Chinese culture,and continuously adjusting marriage and family policy tools to keep up with changes in the world of life.展开更多
Objective:The purpose of this study was to determine the effectiveness of brisk walking as an intervention for self-care agency and care dependency in patients with permanent colorectal cancer stoma.Method:This study ...Objective:The purpose of this study was to determine the effectiveness of brisk walking as an intervention for self-care agency and care dependency in patients with permanent colorectal cancer stoma.Method:This study adopted a quasi-experimental research design,specifically a non-equivalent control group pre-test and post-test design.Utilizing the Exercise of Self-Care Agency Scale(ESCA)and Care Dependency Scale(CDS),a survey was administered to 64 patients from a hospital in Shandong Province.The statistical methods used for analyzing data included frequency,mean,standard deviation(SD),independent t-test,P-value calculation,and dependent t-test.Result:After two months of a brisk walking exercise program,participants in the experimental group had a higher level of self-care agency than before the experiment(P<0.05),and their level of care dependency was significantly reduced(P<0.05).Participants in the control group also showed higher levels of self-care agency(P<0.05)and lower levels of care dependency(P<0.05)after two months compared to their levels before the two months.Conclusion:The brisk walking program had a positive impact on patients’self-care agency and reduced their care dependency.展开更多
The catalysis of olefin polymerization through the chain-walking process is a subject of great interest. In this contribution, the successful synthesis of a Brookhart-type unsymmetrical α-diimine nickel catalyst Ni, ...The catalysis of olefin polymerization through the chain-walking process is a subject of great interest. In this contribution, the successful synthesis of a Brookhart-type unsymmetrical α-diimine nickel catalyst Ni, which contains both dibenzhydryl and phenyl groups, was determined by X-ray crystallography. The compound has a pseudo-tetrahedral geometry at the Ni center, showing pseudo-C2-symmetry. Upon activation with modified methylaluminoxane (MMAO), Ni1 exhibits high catalytic activity up to 1.02 × 107 g PE (mol Ni h)−1 toward ethylene polymerization, enabling the synthesis of high molecular weight branched polyethylene. The molecular weights and branching densities could be tuned over a very wide range. The polymerization results indicated the possibility of precise microstructure control, depending on the polymerization temperature. The branching densities were decreased with increasing the polymerization temperature.展开更多
In order to improve the elderly people's quality of life,supporting their walking behaviors is a promising technology.Therefore,based on one ultrasonic motor,a wire-driven series elastic mechanism for walking assi...In order to improve the elderly people's quality of life,supporting their walking behaviors is a promising technology.Therefore,based on one ultrasonic motor,a wire-driven series elastic mechanism for walking assistive system is proposed and investigated in this research.In contrast to tradition,it innovatively utilizes an ultrasonic motor and a wire-driven series elastic mechanism to achieve superior system performances in aspects of simple structure,high torque/weight ratio,quiet operation,quick response,favorable electromagnetic compatibility,strong shock resistance,better safety,and accurately stable force control.The proposed device is mainly composed of an ultrasonic motor,a linear spring,a steel wire,four pulleys and one rotating part.To overcome the ultrasonic motor's insufficient output torque,a steel wire and pulleys are smartly combined to directly magnify the torque instead of using a conventional gear reducer.Among the pulleys,there is one tailored pulley playing an important role to keep the reduction ratio as 4.5 constantly.Meanwhile,the prototype is manufactured and its actual performance is verified by experimental results.In a one-second operating cycle,it only takes 86 ms for this mechanism to output an assistive torque of 1.6 N·m.At this torque,the ultrasonic motor's speed is around 4.1 rad/s.Moreover,experiments with different operation periods have been conducted for different application scenarios.This study provides a useful idea for the application of ultrasonic motor in walking assistance system.展开更多
Researchers have proposed various linkage mechanisms to connect knee and ankle joints for above-knee prosthe-ses,but most of them only offer natural walking.However,studies have shown that people assume a squatting po...Researchers have proposed various linkage mechanisms to connect knee and ankle joints for above-knee prosthe-ses,but most of them only offer natural walking.However,studies have shown that people assume a squatting posture during daily activities.This paper introduces a novel mechanism that connects the knee joint with the foot-ankle joint to enable both squatting and walking.The prosthetic knee used is the well-known 3R36,while the energy storing and return(ESAR)prosthetic foot is used for the ankle-foot joint.To coordinate knee and ankle joint movements,a six-bar linkage mechanism structure is proposed.Simulation results demonstrate that the proposed modular transfemoral prosthesis accurately mimics the motion patterns of a natural human leg during walking and squatting.For instance,the prosthesis allows a total knee flexion of more than 140°during squatting.The new prosthesis design also incorporates energy-storing mechanisms to reduce energy expenditure during walking for amputees.展开更多
Buckling initiation devices/techniques,including sleepers,distributed buoyancy,snake lay,and residual curvature method(RCM),have recently been widely applied in engineering.These initiated buckles may induce a long pi...Buckling initiation devices/techniques,including sleepers,distributed buoyancy,snake lay,and residual curvature method(RCM),have recently been widely applied in engineering.These initiated buckles may induce a long pipeline to transform into multiple short pipeline segments,which promote the occurrence of pipeline walking.Thus,a pipeline,which is designed to buckle laterally,may laterally and axially displace over time when subjected to repeated heating and cooling cycles.This study aims to reveal the coupling mechanism of pipeline walking and global lateral buckling.First,an analytic solution is proposed to estimate the walking of pipeline segments between two adjacent buckles.Then,the sensitivity of this method to heating and cooling cycles is analyzed.Results show the applicability of the proposed walking analytical solution of buckling pipelines.Subsequently,an influence analysis of walking on global buckling,including the capacity of buckling initiation,buckling amplitude,buckling mode,and failure assessment of the buckling pipeline,is performed.The results reveal that the effect of walking on the buckling axial force is negligible.However,pipeline walking will aggravate the asymmetry of the pipeline buckling and the failure parameters of the pipeline during the post-buckling.展开更多
This paper presents a comprehensive analysis and comparison of the existing literature on the phenomenon of non-marriage or staying unmarried in Asian countries such as China,Japan,South Korea,and Singapore,as well as...This paper presents a comprehensive analysis and comparison of the existing literature on the phenomenon of non-marriage or staying unmarried in Asian countries such as China,Japan,South Korea,and Singapore,as well as European and American countries such as Spain and the US,and explores the trends,characteristics as well as reasons behind such a phenomenon.Through analysis,the present study found that there is a growing trend of postponed marriage and parenthood as well as an increasing proportion of individuals who exhibit no enthusiasm towards matrimony or parenthood in the aforementioned countries.To some extent,non-marriage or postponed marriage has become a prevalent trend in developed countries and even some developing countries.Japan,South Korea,and several developed countries in Europe and America have exhibited this phenomenon since the middle to late 20th century,with a relatively long history.The emergence of this phenomenon in China,Malaysia,the Philippines,and other developing countries in Asia,however,was relatively late,exhibiting a gradual development process.The current marriage landscape in China is characterized by a growing number of non-marriage individuals and a significant level of marital stability.In terms of reasons for staying unmarried,the marriage rates in the aforementioned countries can be attributed to various factors at macro,meso,and micro levels.In China,the phenomenon of non-marriage is closely associated with a range of factors,including diverse values and attitudes towards romance and marriage,marriage squeeze,education expansion,and the rise in females’economic and social status.The emphasis in future research should be placed on predicting the phenomenon of non-marriage,with a specific focus on exploring the reasons for advocating non-marriage,examining the internal mechanisms underlying this phenomenon,analyzing the consequences of non-marriage,and proposing corresponding countermeasures while establishing the public identity towards marriage.展开更多
We study a counterbalanced random walkS_(n)=X_(1)+…+X_(n),which is a discrete time non-Markovian process andX_(n) are given recursively as follows.For n≥2,X_(n) is a new independent sample from some fixed law̸=0 wit...We study a counterbalanced random walkS_(n)=X_(1)+…+X_(n),which is a discrete time non-Markovian process andX_(n) are given recursively as follows.For n≥2,X_(n) is a new independent sample from some fixed law̸=0 with a fixed probability p,andX_(n)=−X_(v(n))with probability 1−p,where v(n)is a uniform random variable on{1;…;n−1}.We apply martingale method to obtain a strong invariance principle forS_(n).展开更多
We construct a one-dimensional quasiperiodic quantum walk to investigate the localization–delocalization transition.The inverse participation ratio and Lyapunov exponent are employed as two indexes to determine the m...We construct a one-dimensional quasiperiodic quantum walk to investigate the localization–delocalization transition.The inverse participation ratio and Lyapunov exponent are employed as two indexes to determine the mobility edge, a critical energy to distinguish the energy regions of extended and localized states. The analytical solution of mobility edge is obtained by the Lyapunov exponents in global theory, and the consistency of the two indexes is confirmed. We further study the dynamic characteristics of the quantum walk and show that the probabilities are localized to some specific lattice sites with time evolution. This phenomenon is explained by the effective potential of the Hamiltonian which corresponds to the phase in the coin operator of the quantum walk.展开更多
Marriage is a very important part in one's life.But different countries have different wedding ceremonies because of the culture difference.western wedding is simple while Chinese wedding is complex.No matter you ...Marriage is a very important part in one's life.But different countries have different wedding ceremonies because of the culture difference.western wedding is simple while Chinese wedding is complex.No matter you choose the Chinese style or the western style,you should marry the one you love best,and then you can enjoy a beautiful life.展开更多
At the very beginning of the book-Pride and Prejudice,the author said"It is universally acknowledged that a single man in possession of a good fortune must be want of a wife."From this line,we can find that ...At the very beginning of the book-Pride and Prejudice,the author said"It is universally acknowledged that a single man in possession of a good fortune must be want of a wife."From this line,we can find that marriage is the most important thing to women.Sometimes it even equals to men's career at that time.It seems like once a woman married to a rich single man,she succeed in her lifetime"career".The question is what is the standard of that"succeed"? Married to a rich man,or the man you really love,or a man you had a crush on? Everyone keep these questions in mind since very early time,and different people have different opinions.In her short life,Jane Austin,the great novelist,composed six novels and created lot of female characters.Women in her novel had different attitudes toward marriage.Speaking of marriage,Pride and Prejudice must be the most representative work of it,and it is also Jane's masterpiece.Through the different type of marriage of Mr.Bennet's daughters,we can find the Jane's atti tude towards marriage.In this article the author will discuss this issue based on Pride and Prejudice.展开更多
Pride and Prejudice is a great realistic novel of the 18th century, in which Jane Austen presents us a central topic on marriage: the plots of the novels and the actions of the characters revolve around marriage.The t...Pride and Prejudice is a great realistic novel of the 18th century, in which Jane Austen presents us a central topic on marriage: the plots of the novels and the actions of the characters revolve around marriage.The thesis analyzes women's opinion on marriage in different two times-the end of the 18th century, the beginning of the 19th century and modern society. How the novel influence the people's views of marriage in that period, and what we can learn about marriage from it.展开更多
Pride and Prejudice is the masterpiece of Jane Austen.In her novel,through description of four marriages,Jane Austen expressed such views on marriage:marriages based on economics or superficial qualities such as lust,...Pride and Prejudice is the masterpiece of Jane Austen.In her novel,through description of four marriages,Jane Austen expressed such views on marriage:marriages based on economics or superficial qualities such as lust,money,and appearance will inevitably lead to unhappiness,while those based on mutual understanding and true love will be happy and stable.展开更多
The present paper,by the novel Pride and Prejudice,shows Jane Austen's opinion of marriage.And from which we also can see the executive concern with money of relationship in the English society at that time.Marria...The present paper,by the novel Pride and Prejudice,shows Jane Austen's opinion of marriage.And from which we also can see the executive concern with money of relationship in the English society at that time.Marriage,a special relationship,is also based on money.We all know that love is the basis of marriage,but at that time,in such a historical social environment,a good eco-nomic situation is necessary.展开更多
Austin’s work-Pride and prejudice, demonstrates three key factors of marriage, namely, a certain economic condition is the guarantee to maintain a happy family, and Love is the foundation of a happy marriage, a ratio...Austin’s work-Pride and prejudice, demonstrates three key factors of marriage, namely, a certain economic condition is the guarantee to maintain a happy family, and Love is the foundation of a happy marriage, a rational and serious attitude towards the matrimonial issue.展开更多
基金supported by Hong Kong Spinal Cord Injury Fund (HKSCIF),China (to HZ)。
文摘For patients with chronic spinal cord injury,the co nventional treatment is rehabilitation and treatment of spinal cord injury complications such as urinary tract infection,pressure sores,osteoporosis,and deep vein thrombosis.Surgery is rarely perfo rmed on spinal co rd injury in the chronic phase,and few treatments have been proven effective in chronic spinal cord injury patients.Development of effective therapies fo r chronic spinal co rd injury patients is needed.We conducted a randomized controlled clinical trial in patients with chronic complete thoracic spinal co rd injury to compare intensive rehabilitation(weight-bearing walking training)alone with surgical intervention plus intensive rehabilitation.This clinical trial was registered at ClinicalTrials.gov(NCT02663310).The goal of surgical intervention was spinal cord detethering,restoration of cerebrospinal fluid flow,and elimination of residual spinal cord compression.We found that surgical intervention plus weight-bearing walking training was associated with a higher incidence of American Spinal Injury Association Impairment Scale improvement,reduced spasticity,and more rapid bowel and bladder functional recovery than weight-bearing walking training alone.Overall,the surgical procedures and intensive rehabilitation were safe.American Spinal Injury Association Impairment Scale improvement was more common in T7-T11 injuries than in T2-T6 injuries.Surgery combined with rehabilitation appears to have a role in treatment of chronic spinal cord injury patients.
文摘The rising of aging and the declining of birth rates have forced the public to focus on the youth’s view on marriage.Based on critical discourse analysis and combined with Fairclough’s three-dimensional discourse analysis model,this paper builds a“Chinese media News Report Corpus on the topic of‘marriage’”whose news are collected from China Daily.It is found that the discourses are neutral and objective with regard to the advantages and disadvantages of marriage,but in general,it is still a traditional view of marriage that is inevitable and closely related to fertility.Although this is controlled by the policies and the social reasons including declining fertility rate,it deviates from the current view of the youth towards marriage,resulting in many serious consequences such as young people’s rejection.In addition,this research found that male and female have great differences in their views on marriage,and men’s resistance to marriage is far greater than that of women,which is departure from the public’s cognition.The reasons behind this need to be explored in order to solve the marriage and love problems of young people in today’s era and realize the healthy development of young marriage.
文摘Rural marriage has characteristics such as close relationship with labor production,deep integration of traditional culture,shy and introverted expression of subjective emotions,and illegal and rough marriage.The civilization evolution of rural marriage forms is moving towards a path that is conducive to the development of production and the pursuit of happiness for farmers,the construction of rural spiritual civilization,and the comprehensive development of rural society.This study analyzes the direction of the evolution of rural marriage form civilization,predicts the trend of rural marriage form civilization evolution,and proposes the future path of rural marriage form civilization evolution,including adhering to human’s most original value expectations of marriage life,drawing nourishment from excellent traditional Chinese culture,and continuously adjusting marriage and family policy tools to keep up with changes in the world of life.
文摘Objective:The purpose of this study was to determine the effectiveness of brisk walking as an intervention for self-care agency and care dependency in patients with permanent colorectal cancer stoma.Method:This study adopted a quasi-experimental research design,specifically a non-equivalent control group pre-test and post-test design.Utilizing the Exercise of Self-Care Agency Scale(ESCA)and Care Dependency Scale(CDS),a survey was administered to 64 patients from a hospital in Shandong Province.The statistical methods used for analyzing data included frequency,mean,standard deviation(SD),independent t-test,P-value calculation,and dependent t-test.Result:After two months of a brisk walking exercise program,participants in the experimental group had a higher level of self-care agency than before the experiment(P<0.05),and their level of care dependency was significantly reduced(P<0.05).Participants in the control group also showed higher levels of self-care agency(P<0.05)and lower levels of care dependency(P<0.05)after two months compared to their levels before the two months.Conclusion:The brisk walking program had a positive impact on patients’self-care agency and reduced their care dependency.
文摘The catalysis of olefin polymerization through the chain-walking process is a subject of great interest. In this contribution, the successful synthesis of a Brookhart-type unsymmetrical α-diimine nickel catalyst Ni, which contains both dibenzhydryl and phenyl groups, was determined by X-ray crystallography. The compound has a pseudo-tetrahedral geometry at the Ni center, showing pseudo-C2-symmetry. Upon activation with modified methylaluminoxane (MMAO), Ni1 exhibits high catalytic activity up to 1.02 × 107 g PE (mol Ni h)−1 toward ethylene polymerization, enabling the synthesis of high molecular weight branched polyethylene. The molecular weights and branching densities could be tuned over a very wide range. The polymerization results indicated the possibility of precise microstructure control, depending on the polymerization temperature. The branching densities were decreased with increasing the polymerization temperature.
基金Supported by China Scholarship Council(Grant No.202006830033),Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)of China.
文摘In order to improve the elderly people's quality of life,supporting their walking behaviors is a promising technology.Therefore,based on one ultrasonic motor,a wire-driven series elastic mechanism for walking assistive system is proposed and investigated in this research.In contrast to tradition,it innovatively utilizes an ultrasonic motor and a wire-driven series elastic mechanism to achieve superior system performances in aspects of simple structure,high torque/weight ratio,quiet operation,quick response,favorable electromagnetic compatibility,strong shock resistance,better safety,and accurately stable force control.The proposed device is mainly composed of an ultrasonic motor,a linear spring,a steel wire,four pulleys and one rotating part.To overcome the ultrasonic motor's insufficient output torque,a steel wire and pulleys are smartly combined to directly magnify the torque instead of using a conventional gear reducer.Among the pulleys,there is one tailored pulley playing an important role to keep the reduction ratio as 4.5 constantly.Meanwhile,the prototype is manufactured and its actual performance is verified by experimental results.In a one-second operating cycle,it only takes 86 ms for this mechanism to output an assistive torque of 1.6 N·m.At this torque,the ultrasonic motor's speed is around 4.1 rad/s.Moreover,experiments with different operation periods have been conducted for different application scenarios.This study provides a useful idea for the application of ultrasonic motor in walking assistance system.
文摘Researchers have proposed various linkage mechanisms to connect knee and ankle joints for above-knee prosthe-ses,but most of them only offer natural walking.However,studies have shown that people assume a squatting posture during daily activities.This paper introduces a novel mechanism that connects the knee joint with the foot-ankle joint to enable both squatting and walking.The prosthetic knee used is the well-known 3R36,while the energy storing and return(ESAR)prosthetic foot is used for the ankle-foot joint.To coordinate knee and ankle joint movements,a six-bar linkage mechanism structure is proposed.Simulation results demonstrate that the proposed modular transfemoral prosthesis accurately mimics the motion patterns of a natural human leg during walking and squatting.For instance,the prosthesis allows a total knee flexion of more than 140°during squatting.The new prosthesis design also incorporates energy-storing mechanisms to reduce energy expenditure during walking for amputees.
基金supported by the China National Postdoctoral Program for Innovative Talents(No.BX2021213)the Natural Science Foundation for Distinguished Young Scholars of China(No.51825904).
文摘Buckling initiation devices/techniques,including sleepers,distributed buoyancy,snake lay,and residual curvature method(RCM),have recently been widely applied in engineering.These initiated buckles may induce a long pipeline to transform into multiple short pipeline segments,which promote the occurrence of pipeline walking.Thus,a pipeline,which is designed to buckle laterally,may laterally and axially displace over time when subjected to repeated heating and cooling cycles.This study aims to reveal the coupling mechanism of pipeline walking and global lateral buckling.First,an analytic solution is proposed to estimate the walking of pipeline segments between two adjacent buckles.Then,the sensitivity of this method to heating and cooling cycles is analyzed.Results show the applicability of the proposed walking analytical solution of buckling pipelines.Subsequently,an influence analysis of walking on global buckling,including the capacity of buckling initiation,buckling amplitude,buckling mode,and failure assessment of the buckling pipeline,is performed.The results reveal that the effect of walking on the buckling axial force is negligible.However,pipeline walking will aggravate the asymmetry of the pipeline buckling and the failure parameters of the pipeline during the post-buckling.
文摘This paper presents a comprehensive analysis and comparison of the existing literature on the phenomenon of non-marriage or staying unmarried in Asian countries such as China,Japan,South Korea,and Singapore,as well as European and American countries such as Spain and the US,and explores the trends,characteristics as well as reasons behind such a phenomenon.Through analysis,the present study found that there is a growing trend of postponed marriage and parenthood as well as an increasing proportion of individuals who exhibit no enthusiasm towards matrimony or parenthood in the aforementioned countries.To some extent,non-marriage or postponed marriage has become a prevalent trend in developed countries and even some developing countries.Japan,South Korea,and several developed countries in Europe and America have exhibited this phenomenon since the middle to late 20th century,with a relatively long history.The emergence of this phenomenon in China,Malaysia,the Philippines,and other developing countries in Asia,however,was relatively late,exhibiting a gradual development process.The current marriage landscape in China is characterized by a growing number of non-marriage individuals and a significant level of marital stability.In terms of reasons for staying unmarried,the marriage rates in the aforementioned countries can be attributed to various factors at macro,meso,and micro levels.In China,the phenomenon of non-marriage is closely associated with a range of factors,including diverse values and attitudes towards romance and marriage,marriage squeeze,education expansion,and the rise in females’economic and social status.The emphasis in future research should be placed on predicting the phenomenon of non-marriage,with a specific focus on exploring the reasons for advocating non-marriage,examining the internal mechanisms underlying this phenomenon,analyzing the consequences of non-marriage,and proposing corresponding countermeasures while establishing the public identity towards marriage.
基金Supported by the National Natural Science Foundation of China(11671373).
文摘We study a counterbalanced random walkS_(n)=X_(1)+…+X_(n),which is a discrete time non-Markovian process andX_(n) are given recursively as follows.For n≥2,X_(n) is a new independent sample from some fixed law̸=0 with a fixed probability p,andX_(n)=−X_(v(n))with probability 1−p,where v(n)is a uniform random variable on{1;…;n−1}.We apply martingale method to obtain a strong invariance principle forS_(n).
文摘We construct a one-dimensional quasiperiodic quantum walk to investigate the localization–delocalization transition.The inverse participation ratio and Lyapunov exponent are employed as two indexes to determine the mobility edge, a critical energy to distinguish the energy regions of extended and localized states. The analytical solution of mobility edge is obtained by the Lyapunov exponents in global theory, and the consistency of the two indexes is confirmed. We further study the dynamic characteristics of the quantum walk and show that the probabilities are localized to some specific lattice sites with time evolution. This phenomenon is explained by the effective potential of the Hamiltonian which corresponds to the phase in the coin operator of the quantum walk.
文摘Marriage is a very important part in one's life.But different countries have different wedding ceremonies because of the culture difference.western wedding is simple while Chinese wedding is complex.No matter you choose the Chinese style or the western style,you should marry the one you love best,and then you can enjoy a beautiful life.
文摘At the very beginning of the book-Pride and Prejudice,the author said"It is universally acknowledged that a single man in possession of a good fortune must be want of a wife."From this line,we can find that marriage is the most important thing to women.Sometimes it even equals to men's career at that time.It seems like once a woman married to a rich single man,she succeed in her lifetime"career".The question is what is the standard of that"succeed"? Married to a rich man,or the man you really love,or a man you had a crush on? Everyone keep these questions in mind since very early time,and different people have different opinions.In her short life,Jane Austin,the great novelist,composed six novels and created lot of female characters.Women in her novel had different attitudes toward marriage.Speaking of marriage,Pride and Prejudice must be the most representative work of it,and it is also Jane's masterpiece.Through the different type of marriage of Mr.Bennet's daughters,we can find the Jane's atti tude towards marriage.In this article the author will discuss this issue based on Pride and Prejudice.
文摘Pride and Prejudice is a great realistic novel of the 18th century, in which Jane Austen presents us a central topic on marriage: the plots of the novels and the actions of the characters revolve around marriage.The thesis analyzes women's opinion on marriage in different two times-the end of the 18th century, the beginning of the 19th century and modern society. How the novel influence the people's views of marriage in that period, and what we can learn about marriage from it.
文摘Pride and Prejudice is the masterpiece of Jane Austen.In her novel,through description of four marriages,Jane Austen expressed such views on marriage:marriages based on economics or superficial qualities such as lust,money,and appearance will inevitably lead to unhappiness,while those based on mutual understanding and true love will be happy and stable.
文摘The present paper,by the novel Pride and Prejudice,shows Jane Austen's opinion of marriage.And from which we also can see the executive concern with money of relationship in the English society at that time.Marriage,a special relationship,is also based on money.We all know that love is the basis of marriage,but at that time,in such a historical social environment,a good eco-nomic situation is necessary.
文摘Austin’s work-Pride and prejudice, demonstrates three key factors of marriage, namely, a certain economic condition is the guarantee to maintain a happy family, and Love is the foundation of a happy marriage, a rational and serious attitude towards the matrimonial issue.