This article profiles current status of spread and control of HIV/AIDS in China. China has a significant population of MSM (men who have sex with men) and they have been becoming very much alive in many ways since 199...This article profiles current status of spread and control of HIV/AIDS in China. China has a significant population of MSM (men who have sex with men) and they have been becoming very much alive in many ways since 1990s due to recent social changes. Some surveys indicate that great many of MSM are engaged in high-risk behaviors. In addition, majority of MSM have also experienced sexual encounters with women sometimes in their lives, which possibly con- tribute to spread of HIV to women. Some reports documented that HIV is becoming rampant among MSM since more than 1% of them are now infected. Political, cultural and custom elements could hinder intervention activities against HIV spread among MSM. Fortunately, many cities in China have seen that MSM were in cooperation with responsible institutions carrying out certain intervention measures. The general situation is promising. The authors forecast that the fast HIV spread among MSM of China could possibly be halted within several years when the authorities become more sensible to this issue, health service institutions offer unswerving efforts toward the MSM community and those who involve in MSM undertakes necessary responsibilities.展开更多
China is currently experiencing one of the most rapidly expanding HIV epidemics in the world. Although the overall prevalence rate is still low, with a population of 1.3 billion, high-risk factors which have contribut...China is currently experiencing one of the most rapidly expanding HIV epidemics in the world. Although the overall prevalence rate is still low, with a population of 1.3 billion, high-risk factors which have contributed to the HIV/AIDS epidemics worldwide continue to prevail in China, including a high rate of injecting drug use and needle sharing, commercial sex with low rates of condom use, and concurrent sex with both commercial sex workers and noncommercial casual or steady sex partners. In addition, there are increasing “double risk” populations overlapping drug users and sex workers, as well as increasing rates of STDs and HIV among high-risk populations. Sexual transmission, therefore, may serve as a bridge connecting high-risk populations with general populations. There is an urgent need to prevent the spread of HIV from these high-risk oooulations into the general oooulation of China.展开更多
The evolutionary dynamics first conceived by Darwin and Wallace, referring to as Darwinian dynamics in the present paper, has been found to be universally valid in biology. The statistical mechanics and thermodynamics...The evolutionary dynamics first conceived by Darwin and Wallace, referring to as Darwinian dynamics in the present paper, has been found to be universally valid in biology. The statistical mechanics and thermodynamics, while enormous successful in physics, have been in an awkward situation of wanting a consistent dynamical understanding. Here we present from a formal point of view an exploration of the connection between thermodynamics and Darwinian dynamics and a few related topics. We first show that the stochasticity in Darwinian dynamics implies the existence temperature, hence the canonical distribution of Boltzmann-Gibbs type. In term of relative entropy the Second Law of thermodynamics is dynamically demonstrated without detailed balance condition, and is valid regardless of size of the system. In particular, the dynamical component responsible for breaking detailed balance condition does not contribute to the change of the relative entropy. Two types of stochastic dynamical equalities of current interest are explicitly discussed in the present approach: One is based on Feynman-Kac formula and another is a generalization of Einstein relation. Both are directly accessible to experimental tests. Our demonstration indicates that Darwinian dynamics represents logically a simple and straightforward starting point for statistical mechanics and thermodynamics and is complementary to and consistent with conservative dynamics that dominates the physical sciences. Present exploration suggests the existence of a unified stochastic dynamical framework both near and far from equilibrium.展开更多
Integer numbers of natural units (Planck units) to express Newton's inverse square law of gravitation in terms of quantum mechanical probabilities are used. The strong nuclear force between two coupled nucleons is ...Integer numbers of natural units (Planck units) to express Newton's inverse square law of gravitation in terms of quantum mechanical probabilities are used. The strong nuclear force between two coupled nucleons is derived, the minds of giants such as Newton and Einstein are met. There is a considerable continuing effort directed for the understanding of gravity and the constants of nature, last century's legacy of Arthur Stanley Eddington.展开更多
To understand the prevalence and evolution of drug resistant HIV strains in Henan China after the implementation of free antiretroviral therapy for AIDS patients. 45 drug naive AIDS patients, 118 AIDS patients who rec...To understand the prevalence and evolution of drug resistant HIV strains in Henan China after the implementation of free antiretroviral therapy for AIDS patients. 45 drug naive AIDS patients, 118 AIDS patients who received three months antiretroviral therapy and 124 AIDS patients who received six months antiretroviral treatment were recruited in the southern part of Henan province. Information on general condition, antiretroviral medicines, adherence and clinical syndromes were collected by face to face interview. Meanwhile, 14ml EDTA anticoagulant blood was drawn. CD4/CD8 T cell count, viral load and genotypic drug resistance were tested. The rates of clinical improvement were 55.1% and 50.8% respectively three months and six months after antiretroviral therapy. The mean CD4 cell count after antiretroviral therapy was significantly higher than in drug naive patients. The prevalence rate of drug resistant HIV strains were 13.9%, 45.4% and 62.7% in drug naive patients, three month treatment patients and six month treatment patients, respectively. The number of resistance mutation codons and the frequency of mutations increased significantly with continued antiretroviral therapy. The mutation sites were primarily at the 103, 106 and 215 codons in the three-month treatment group and they increased to 15 codon mutations in the six-month treatment group. From this result, the evolution of drug resistant strains was inferred to begin with the high level NNRTI resistant strain, and then develop low level resistant strains to NRTIs. The HIV strains with high level resistance to NVP and low level resistance to AZT and DDI were highly prevalent because of the AZT+DDI+NVP combination therapy. These HIV strains were also cross resistant to DLV, EFV, DDC and D4T. Poor adherence to therapy was believed to be the main reason for the emergence and prevalence of drug resistant HIV strains. The prevalence of drug resistant HIV strains was increased with the continuation of antiretroviral therapy in the southern part of Henan province. Measures, that could promote high level adherence, provide new drugs and change ART regimens in failing patients, should be implemented as soon as possible.展开更多
The locally rotationally symmetric Bianchi-type II string cosmological models with bulk viscosity are obtained, where an equation of state, , and a relation between metric potentials, , are adopted. The physical featu...The locally rotationally symmetric Bianchi-type II string cosmological models with bulk viscosity are obtained, where an equation of state, , and a relation between metric potentials, , are adopted. The physical features of the models are also discussed. In special cases the model reduces to the string models without viscosity that was previously given in the literatures.展开更多
Edgar Allan Poe is one of the greatest writers in American literary history. He was a short-story writer, fathering the detective story and starting the psychoanalytical tradition. He was also a poet, advocating short...Edgar Allan Poe is one of the greatest writers in American literary history. He was a short-story writer, fathering the detective story and starting the psychoanalytical tradition. He was also a poet, advocating short poems with regular and delicate rhyming schemes. He was, at the same time, a literary theorist, writing about the principles of composition. This paper is to analyze the theme and musical quality of Poe's poems, focusing on the techniques Poe had employed in his poems to help enhance his major themes of death and beauty. According to Poe, the most appropriate tone for all poems is melancholy. In Poe's life, there was a personal connection with "the death of a beautiful woman", which is acknowledged in his thesis The philosophy of composition. The impetus for composing of poems undoubtedly arose from Poe's loss of his mother and of other women he had loved. The beauty of music exerts great influence on Poe's aesthetic perception. He paid more than enough attention to the musical qualities of poetry. He defined poetry as "the rhythmical creation of beauty". Poe advocated the idea of the poet as a craftsman, interested in polishing and refining language. He stressed the use of language as a medium of convey pure musical and rhythmical beauty. Poe's reputation for musical verses is due to his choice of sounds and treatment of rimes and meter.展开更多
According to the model of Dornyei three levels (language level, learner level, learning situation level) of foreign language learning motivation, the paper mainly discusses "course-specific motivational components...According to the model of Dornyei three levels (language level, learner level, learning situation level) of foreign language learning motivation, the paper mainly discusses "course-specific motivational components" from learning situation level, and puts forward advantages and disadvantages of the model. Basing on the model, the paper further expounds relative contents relating to learner's motivation, for example, syllabus, teaching methods and learning tasks. At last, the paper states the existing problems in language teaching and learning, at the same time, pointing out some suggestions.展开更多
According to Felice Vinci's revolutionary theory of the Nordic origins of the Homeric poems, the Achaeans who migrated to the Aegean Sea to found the Mycenaean civilization--whose language actually was an Ionian dial...According to Felice Vinci's revolutionary theory of the Nordic origins of the Homeric poems, the Achaeans who migrated to the Aegean Sea to found the Mycenaean civilization--whose language actually was an Ionian dialect, similar to that of Homer--were the laones, deriving their origin from Sweden. The Italian scholar offers significant analogies to prove his hypothesis, drawing them from several scientific disciplines, such as history (the movement appears similar to that of Varangians, who in the Middle Ages moved from Sweden to found the kingdom of Rus'), geography (the promontory of Cape Sounion, located 43 miles south-southeast of Athens, seems to be a souvenir of the same name), archaeology (the spiral shape, one of the most popular ones in the volutes of the Ionic capitals, was a common decoration also during the Nordic Bronze Age), and literature (especially a remarkable quotation taken from Plato, Critias 111e). In the author's contribution, he tries to check Felice Vinci's interpretation through a careful survey in ancient literature and linguistics, in order to verify the etymological connections between the ancient people of laones and the Tacitean Suiones.展开更多
Based on a survey and some language experts' points of view about the motivation of Chinese university students, this article tries to deal with two issues: what kind of motivation does Chinese University students h...Based on a survey and some language experts' points of view about the motivation of Chinese university students, this article tries to deal with two issues: what kind of motivation does Chinese University students have and how can a teacher positively affect the motivation of his or her students?展开更多
"Backwash" has usually been described in terms of the effect of testing on language teaching and learning. "Backwash can be harmful or beneficial", as Arthur Hughes states. (Hughes: 1989) This paper set out to ..."Backwash" has usually been described in terms of the effect of testing on language teaching and learning. "Backwash can be harmful or beneficial", as Arthur Hughes states. (Hughes: 1989) This paper set out to see how far this term can be applied to the ways in which both the students and teachers can benefit from language testing.展开更多
With the method of Green's function, we investigate the energy spectra of two-component ultracold bosonic atoms in optical lattices. We End that there are two energy bands for each component. The critical conditio...With the method of Green's function, we investigate the energy spectra of two-component ultracold bosonic atoms in optical lattices. We End that there are two energy bands for each component. The critical condition of the superfluid-Mott insulator phase transition is determined by the energy band structure. We also find that the nearest neighboring and on-site interactions fail to change the structure of energy bands, but shift the energy bands only. According to the conditions of the phase transitions, three stable superfluid and Mott insulating phases can be found by adjusting the experiment parameters. We also discuss the possibility of observing these new phases and their transitions in further experiments.展开更多
In order to sustain and increase students' interest in learning English, we tried to design several motivational approaches based on teaching psychology and pedagogy so as to improve our English teaching. The three o...In order to sustain and increase students' interest in learning English, we tried to design several motivational approaches based on teaching psychology and pedagogy so as to improve our English teaching. The three orientations were identified to be the principles for the study: 1.Inspiration out of tracing the retrogression to its source; 2.Stimulating learning through integrative internal and external drives; 3.Providing chances to get more inspiration of creativity. The study of integrative motivation was made for two years, which turned out to be efficacious in our English teaching when it was finished.展开更多
Fostering students' pragmatic competence in ESL/EFL classrooms has been the subject of a large number of studies over the last several decades. This paper will examine the importance of pragmatic competence in L2 spo...Fostering students' pragmatic competence in ESL/EFL classrooms has been the subject of a large number of studies over the last several decades. This paper will examine the importance of pragmatic competence in L2 spoken communication and investigate factors leading to pragmatic failures. It will also discuss possible ways to help foster students' pragmatic competence in EFL speaking classes.展开更多
"The Sun Rising" is one of the most outstanding metaphysical poems of John Donne. After a general introduction about the metaphysical poetry and the author, this paper mainly aims to analyze the arresting and origin..."The Sun Rising" is one of the most outstanding metaphysical poems of John Donne. After a general introduction about the metaphysical poetry and the author, this paper mainly aims to analyze the arresting and original conceits and images used in "The Sun Rising" and comment on their effect on expressing the author's feeling and reflecting his emotions.展开更多
The findings of the study indicate that students prefer to engage in the vocabulary learning strategies that would be most appealing to them and that would entail less manipulation of the language. Of the four vocabul...The findings of the study indicate that students prefer to engage in the vocabulary learning strategies that would be most appealing to them and that would entail less manipulation of the language. Of the four vocabulary memorizing strategies cited in the study (rote repetition, structural associations, semantic strategies, and mnemonic keyword techniques), students apparently tended to favor the second and the third ones, though rote repetition remains appealing to some of them. Mnemonic devices such as keyword method were rather unpopular to most of the students because they would involve the learners in more active performance of the target language.展开更多
November 2012, the CPC eighteen report makes clear the "three advocacy" that is "promote a prosperous, democratic, civilized, harmonious, advocating freedom, equality, justice, rule of law, promote patriotism, dedi...November 2012, the CPC eighteen report makes clear the "three advocacy" that is "promote a prosperous, democratic, civilized, harmonious, advocating freedom, equality, justice, rule of law, promote patriotism, dedication, integrity, kindness, and actively cultivate community ism core values". Shanghai University of Engineering Science actively exchange, in consultation with Chen Yun Memorial. Chen Yun Memorial becomes education base of Party spirit of Shanghai University of Engineering Science in January 2012. The two sides mutual assistance, resource sharing, innovation, and collaborate on a series of patriotic education, spirit of education, the socialist core value education as the core of ideological education. Make full use of Shanghai University of Engineering Science Chen Yun Memorial rich red cultural resources, cultural heritage and innovation red while actively practice the socialist core values, help young party members to establish a correct outlook on life and values, enhance the spirit of patriotism of young party members to enhance awareness of young party members in the party spirit.展开更多
文摘This article profiles current status of spread and control of HIV/AIDS in China. China has a significant population of MSM (men who have sex with men) and they have been becoming very much alive in many ways since 1990s due to recent social changes. Some surveys indicate that great many of MSM are engaged in high-risk behaviors. In addition, majority of MSM have also experienced sexual encounters with women sometimes in their lives, which possibly con- tribute to spread of HIV to women. Some reports documented that HIV is becoming rampant among MSM since more than 1% of them are now infected. Political, cultural and custom elements could hinder intervention activities against HIV spread among MSM. Fortunately, many cities in China have seen that MSM were in cooperation with responsible institutions carrying out certain intervention measures. The general situation is promising. The authors forecast that the fast HIV spread among MSM of China could possibly be halted within several years when the authorities become more sensible to this issue, health service institutions offer unswerving efforts toward the MSM community and those who involve in MSM undertakes necessary responsibilities.
文摘China is currently experiencing one of the most rapidly expanding HIV epidemics in the world. Although the overall prevalence rate is still low, with a population of 1.3 billion, high-risk factors which have contributed to the HIV/AIDS epidemics worldwide continue to prevail in China, including a high rate of injecting drug use and needle sharing, commercial sex with low rates of condom use, and concurrent sex with both commercial sex workers and noncommercial casual or steady sex partners. In addition, there are increasing “double risk” populations overlapping drug users and sex workers, as well as increasing rates of STDs and HIV among high-risk populations. Sexual transmission, therefore, may serve as a bridge connecting high-risk populations with general populations. There is an urgent need to prevent the spread of HIV from these high-risk oooulations into the general oooulation of China.
基金The project supported in part by USA NIH Grant under HG002894
文摘The evolutionary dynamics first conceived by Darwin and Wallace, referring to as Darwinian dynamics in the present paper, has been found to be universally valid in biology. The statistical mechanics and thermodynamics, while enormous successful in physics, have been in an awkward situation of wanting a consistent dynamical understanding. Here we present from a formal point of view an exploration of the connection between thermodynamics and Darwinian dynamics and a few related topics. We first show that the stochasticity in Darwinian dynamics implies the existence temperature, hence the canonical distribution of Boltzmann-Gibbs type. In term of relative entropy the Second Law of thermodynamics is dynamically demonstrated without detailed balance condition, and is valid regardless of size of the system. In particular, the dynamical component responsible for breaking detailed balance condition does not contribute to the change of the relative entropy. Two types of stochastic dynamical equalities of current interest are explicitly discussed in the present approach: One is based on Feynman-Kac formula and another is a generalization of Einstein relation. Both are directly accessible to experimental tests. Our demonstration indicates that Darwinian dynamics represents logically a simple and straightforward starting point for statistical mechanics and thermodynamics and is complementary to and consistent with conservative dynamics that dominates the physical sciences. Present exploration suggests the existence of a unified stochastic dynamical framework both near and far from equilibrium.
文摘Integer numbers of natural units (Planck units) to express Newton's inverse square law of gravitation in terms of quantum mechanical probabilities are used. The strong nuclear force between two coupled nucleons is derived, the minds of giants such as Newton and Einstein are met. There is a considerable continuing effort directed for the understanding of gravity and the constants of nature, last century's legacy of Arthur Stanley Eddington.
文摘To understand the prevalence and evolution of drug resistant HIV strains in Henan China after the implementation of free antiretroviral therapy for AIDS patients. 45 drug naive AIDS patients, 118 AIDS patients who received three months antiretroviral therapy and 124 AIDS patients who received six months antiretroviral treatment were recruited in the southern part of Henan province. Information on general condition, antiretroviral medicines, adherence and clinical syndromes were collected by face to face interview. Meanwhile, 14ml EDTA anticoagulant blood was drawn. CD4/CD8 T cell count, viral load and genotypic drug resistance were tested. The rates of clinical improvement were 55.1% and 50.8% respectively three months and six months after antiretroviral therapy. The mean CD4 cell count after antiretroviral therapy was significantly higher than in drug naive patients. The prevalence rate of drug resistant HIV strains were 13.9%, 45.4% and 62.7% in drug naive patients, three month treatment patients and six month treatment patients, respectively. The number of resistance mutation codons and the frequency of mutations increased significantly with continued antiretroviral therapy. The mutation sites were primarily at the 103, 106 and 215 codons in the three-month treatment group and they increased to 15 codon mutations in the six-month treatment group. From this result, the evolution of drug resistant strains was inferred to begin with the high level NNRTI resistant strain, and then develop low level resistant strains to NRTIs. The HIV strains with high level resistance to NVP and low level resistance to AZT and DDI were highly prevalent because of the AZT+DDI+NVP combination therapy. These HIV strains were also cross resistant to DLV, EFV, DDC and D4T. Poor adherence to therapy was believed to be the main reason for the emergence and prevalence of drug resistant HIV strains. The prevalence of drug resistant HIV strains was increased with the continuation of antiretroviral therapy in the southern part of Henan province. Measures, that could promote high level adherence, provide new drugs and change ART regimens in failing patients, should be implemented as soon as possible.
文摘The locally rotationally symmetric Bianchi-type II string cosmological models with bulk viscosity are obtained, where an equation of state, , and a relation between metric potentials, , are adopted. The physical features of the models are also discussed. In special cases the model reduces to the string models without viscosity that was previously given in the literatures.
文摘Edgar Allan Poe is one of the greatest writers in American literary history. He was a short-story writer, fathering the detective story and starting the psychoanalytical tradition. He was also a poet, advocating short poems with regular and delicate rhyming schemes. He was, at the same time, a literary theorist, writing about the principles of composition. This paper is to analyze the theme and musical quality of Poe's poems, focusing on the techniques Poe had employed in his poems to help enhance his major themes of death and beauty. According to Poe, the most appropriate tone for all poems is melancholy. In Poe's life, there was a personal connection with "the death of a beautiful woman", which is acknowledged in his thesis The philosophy of composition. The impetus for composing of poems undoubtedly arose from Poe's loss of his mother and of other women he had loved. The beauty of music exerts great influence on Poe's aesthetic perception. He paid more than enough attention to the musical qualities of poetry. He defined poetry as "the rhythmical creation of beauty". Poe advocated the idea of the poet as a craftsman, interested in polishing and refining language. He stressed the use of language as a medium of convey pure musical and rhythmical beauty. Poe's reputation for musical verses is due to his choice of sounds and treatment of rimes and meter.
文摘According to the model of Dornyei three levels (language level, learner level, learning situation level) of foreign language learning motivation, the paper mainly discusses "course-specific motivational components" from learning situation level, and puts forward advantages and disadvantages of the model. Basing on the model, the paper further expounds relative contents relating to learner's motivation, for example, syllabus, teaching methods and learning tasks. At last, the paper states the existing problems in language teaching and learning, at the same time, pointing out some suggestions.
文摘According to Felice Vinci's revolutionary theory of the Nordic origins of the Homeric poems, the Achaeans who migrated to the Aegean Sea to found the Mycenaean civilization--whose language actually was an Ionian dialect, similar to that of Homer--were the laones, deriving their origin from Sweden. The Italian scholar offers significant analogies to prove his hypothesis, drawing them from several scientific disciplines, such as history (the movement appears similar to that of Varangians, who in the Middle Ages moved from Sweden to found the kingdom of Rus'), geography (the promontory of Cape Sounion, located 43 miles south-southeast of Athens, seems to be a souvenir of the same name), archaeology (the spiral shape, one of the most popular ones in the volutes of the Ionic capitals, was a common decoration also during the Nordic Bronze Age), and literature (especially a remarkable quotation taken from Plato, Critias 111e). In the author's contribution, he tries to check Felice Vinci's interpretation through a careful survey in ancient literature and linguistics, in order to verify the etymological connections between the ancient people of laones and the Tacitean Suiones.
文摘Based on a survey and some language experts' points of view about the motivation of Chinese university students, this article tries to deal with two issues: what kind of motivation does Chinese University students have and how can a teacher positively affect the motivation of his or her students?
文摘"Backwash" has usually been described in terms of the effect of testing on language teaching and learning. "Backwash can be harmful or beneficial", as Arthur Hughes states. (Hughes: 1989) This paper set out to see how far this term can be applied to the ways in which both the students and teachers can benefit from language testing.
文摘With the method of Green's function, we investigate the energy spectra of two-component ultracold bosonic atoms in optical lattices. We End that there are two energy bands for each component. The critical condition of the superfluid-Mott insulator phase transition is determined by the energy band structure. We also find that the nearest neighboring and on-site interactions fail to change the structure of energy bands, but shift the energy bands only. According to the conditions of the phase transitions, three stable superfluid and Mott insulating phases can be found by adjusting the experiment parameters. We also discuss the possibility of observing these new phases and their transitions in further experiments.
文摘In order to sustain and increase students' interest in learning English, we tried to design several motivational approaches based on teaching psychology and pedagogy so as to improve our English teaching. The three orientations were identified to be the principles for the study: 1.Inspiration out of tracing the retrogression to its source; 2.Stimulating learning through integrative internal and external drives; 3.Providing chances to get more inspiration of creativity. The study of integrative motivation was made for two years, which turned out to be efficacious in our English teaching when it was finished.
文摘Fostering students' pragmatic competence in ESL/EFL classrooms has been the subject of a large number of studies over the last several decades. This paper will examine the importance of pragmatic competence in L2 spoken communication and investigate factors leading to pragmatic failures. It will also discuss possible ways to help foster students' pragmatic competence in EFL speaking classes.
文摘"The Sun Rising" is one of the most outstanding metaphysical poems of John Donne. After a general introduction about the metaphysical poetry and the author, this paper mainly aims to analyze the arresting and original conceits and images used in "The Sun Rising" and comment on their effect on expressing the author's feeling and reflecting his emotions.
文摘The findings of the study indicate that students prefer to engage in the vocabulary learning strategies that would be most appealing to them and that would entail less manipulation of the language. Of the four vocabulary memorizing strategies cited in the study (rote repetition, structural associations, semantic strategies, and mnemonic keyword techniques), students apparently tended to favor the second and the third ones, though rote repetition remains appealing to some of them. Mnemonic devices such as keyword method were rather unpopular to most of the students because they would involve the learners in more active performance of the target language.
文摘November 2012, the CPC eighteen report makes clear the "three advocacy" that is "promote a prosperous, democratic, civilized, harmonious, advocating freedom, equality, justice, rule of law, promote patriotism, dedication, integrity, kindness, and actively cultivate community ism core values". Shanghai University of Engineering Science actively exchange, in consultation with Chen Yun Memorial. Chen Yun Memorial becomes education base of Party spirit of Shanghai University of Engineering Science in January 2012. The two sides mutual assistance, resource sharing, innovation, and collaborate on a series of patriotic education, spirit of education, the socialist core value education as the core of ideological education. Make full use of Shanghai University of Engineering Science Chen Yun Memorial rich red cultural resources, cultural heritage and innovation red while actively practice the socialist core values, help young party members to establish a correct outlook on life and values, enhance the spirit of patriotism of young party members to enhance awareness of young party members in the party spirit.