AASHTO’s guideline for geometric design of highways and similar guidelines require that roadside areas on the inside of horizontal curves be cleared of high objects to provide stopping sight distance. The guidelines ...AASHTO’s guideline for geometric design of highways and similar guidelines require that roadside areas on the inside of horizontal curves be cleared of high objects to provide stopping sight distance. The guidelines have analytical models for determining the extent of clearance, known as the horizontal sightline offset or clearance offset, for simple curves. Researchers in the past have developed analytical models for clearance offsets for spiraled and reverse curves. Very few researchers developed analytical models for available sight distances for compound curves. Still missing are models for horizontal sightline offsets and locations of the offsets for compound curves. The objective of this paper is to present development of analytical models and charts for determining horizontal sightline offsets and their locations for compound curves. The paper considers curves whose component arcs are individually shorter than stopping sight distance. The resulting models and the charts have been verified with accurate values determined using graphical methods. The models and the charts will find application in geometric design of highway compound curves.展开更多
A discrete Hopf fibration of S15 over S8 with S7 (unit octonions) as fibers leads to a 16D Polytope P16 with 4320 vertices obtained from the convex hull of the 16D Barnes-Wall lattice Λ16. It is argued (conjectured) ...A discrete Hopf fibration of S15 over S8 with S7 (unit octonions) as fibers leads to a 16D Polytope P16 with 4320 vertices obtained from the convex hull of the 16D Barnes-Wall lattice Λ16. It is argued (conjectured) how a subsequent 2-1 mapping (projection) of P16 onto a 8D-hyperplane might furnish the 2160 vertices of the uniform 241 polytope in 8-dimensions, and such that one can capture the chain sequence of polytopes 241,231,221,211in D=8,7,6,5dimensions, leading, respectively, to the sequence of Coxeter groups E8,E7,E6,SO(10)which are putative GUT group candidates. An embedding of the E8⊕E8and E8⊕E8⊕E8lattice into the Barnes-Wall Λ16 and Leech Λ24 lattices, respectively, is explicitly shown. From the 16D lattice E8⊕E8one can generate two separate families of Elser-Sloane 4D quasicrystals (QC’s) with H4 (icosahedral) symmetry via the “cut-and-project” method from 8D to 4D in each separate E8 lattice. Therefore, one obtains in this fashion the Cartesian product of two Elser-Sloane QC’s Q×Qspanning an 8D space. Similarly, from the 24D lattice E8⊕E8⊕E8one can generate the Cartesian product of three Elser-Sloane 4D quasicrystals (QC’s) Q×Q×Qwith H4 symmetry and spanning a 12D space.展开更多
On the occasion of the 10th anniversary of the Grand Canal's application for the World Heritage status in 2024,with the strong support of the Department of International Cooperation of the National Radio and Telev...On the occasion of the 10th anniversary of the Grand Canal's application for the World Heritage status in 2024,with the strong support of the Department of International Cooperation of the National Radio and Television Administration and the International Tourism Alliance of Silk Road Cities.展开更多
On April 2,hosted by Network of International Culturalink Entities(NICE),Jiangsu Provincial Department of Culture and Tourism,and Wuxi Municipal People's Government,with special support from the International Coop...On April 2,hosted by Network of International Culturalink Entities(NICE),Jiangsu Provincial Department of Culture and Tourism,and Wuxi Municipal People's Government,with special support from the International Cooperation Department of the National Radio and Television Administration,and undertake by Wuxi Municipal Culture,Radio,Television and Tourism Bureau and Wuxi Liangxi District People's Government,the launch ceremony of"Nihao!China"-China's Grand Canal Tourism Overseas Promotion Season 2024 washeld in Wuxi,Jiangsu Province.展开更多
As a leading project of Beijing's visionary endeavor to construct a"City of Museums"and establish the Grand Canal Cultural Belt,the Grand Canal Museum of Beijing also an emblematic item fostering coordin...As a leading project of Beijing's visionary endeavor to construct a"City of Museums"and establish the Grand Canal Cultural Belt,the Grand Canal Museum of Beijing also an emblematic item fostering coordinated development between Beijing,Tianjin,and Hebei Province.It is an intelligent comprehensive museum that integrates the functions of exhibition,social education,cultural protection and conservation,collection and storage.展开更多
A Grand Canal,spanning ancient and modern times,traversing north and south,flows endlessly.The Grand Canal,stretching nearly 3,200 kilometers and with a history of over 2,500 years,is the world's largest,longest,a...A Grand Canal,spanning ancient and modern times,traversing north and south,flows endlessly.The Grand Canal,stretching nearly 3,200 kilometers and with a history of over 2,500 years,is the world's largest,longest,and oldest canal.On June 22,2014,the Grand Canal was officially inscribed on the World Heritage List by the World Heritage Committee at its 38th session.展开更多
David’s Story by Zoë Wicomb addresses the complexities of representing female suffering and the limitations of traditional historical narratives in capturing the experiences of marginalized bodies.It challenges ...David’s Story by Zoë Wicomb addresses the complexities of representing female suffering and the limitations of traditional historical narratives in capturing the experiences of marginalized bodies.It challenges the grand narratives of national history by emphasizing the indispensable role of women’s experiences.Through characters like Dulcie and Rachael,Wicomb portrays the female body as a site of resistance and resilience,highlighting the need for more nuanced and inclusive ways of documenting history.Underscoring the inexpressibility of trauma and the limitations of language and representation,the novel self-reflexively acknowledges its own aporia of completing the narrative,embodying the ongoing struggle to capture the full breadth of human experience.展开更多
My grandpa is an elderly man in his seventies.He used to have black hair and now it's turning gray.He is tall and fat so he looks strong.My grandfather has 6 children.They are all kind to him and want him to have ...My grandpa is an elderly man in his seventies.He used to have black hair and now it's turning gray.He is tall and fat so he looks strong.My grandfather has 6 children.They are all kind to him and want him to have a happy life.They ask my grandpa to live with one of them,but he refuses them.He doesn't want to bother them,and he wants to live alone,either?展开更多
The book initiates by portraying Africa,introducing its physical features and endowments,and providing a concise historical perspective that highlights Africa as the initial home of the human species.Subsequently,the ...The book initiates by portraying Africa,introducing its physical features and endowments,and providing a concise historical perspective that highlights Africa as the initial home of the human species.Subsequently,the book explores another epoch in Africa’s self-consciousness,focusing on the Pan-Africanism in the middle of the 20th century-the time when Africa had been greatly subjected to imperialism and colonialism,which plunged it into great destitution.展开更多
Introduction: Grand multiparity is a known risk factor for maternal and fetal complications. Materials and Methods: We carried out a cross-sectional descriptive study on the delivery of grand multiparas at the materni...Introduction: Grand multiparity is a known risk factor for maternal and fetal complications. Materials and Methods: We carried out a cross-sectional descriptive study on the delivery of grand multiparas at the maternity of the regional hospital annex of Ayos, a semi-rural locality in the Center region of Cameroon. The study covered the period from January 2012 through December 2020, and the objective was to assess the frequency, the determinants and the outcome of delivery in grand multiparas. Results: We recorded 1384 deliveries and enrolled 137 cases of delivery of grand multiparas. This gives a frequency of grand multipara delivery of 9.89%. The mean age of the women was 34.96 ± 4.45 years. Married parturients accounted for 65% of the cases and 16.8% were HIV positive. Delivery occurred at term in 89.9%. In 35.8%, no antenatal consultation was done. The use of the partograph during labor was reported in 11.7%. Per vaginal delivery was noted in 88.3%, emergency cesarean in 10.2% and elective cesarean in 1.5%. The most frequent maternal complications included post-partum hemorrhage (19.9%), genital tract tears (12.4%), endometritis (9.5%) and surgical wound infection (8.7%). No maternal death was recorded. The mean birth weight of the newborns was 3336.8 ± 550 g. Fetal complications were mostly represented by neonatal infection (20.1%), perinatal death (7.9%) and neonatal asphyxia (9.5%). Conclusion: The frequency of grand multiparous delivery in the semi-rural locality of Ayos, Cameroon, was 9.89%. The mean age of parturients was 38.96 years and the proportion of vaginal delivery was 88.3%.展开更多
On May 26th,the China Cardiovascular Health Index 2023 was grandly released at the opening ceremony of the 17th Oriental Congress of Cardiology.The China Cardiovascular Health Index(CHI)is not only the first medical i...On May 26th,the China Cardiovascular Health Index 2023 was grandly released at the opening ceremony of the 17th Oriental Congress of Cardiology.The China Cardiovascular Health Index(CHI)is not only the first medical index-type indicator reflecting and measuring the status of cardiovascular diseases and treatment in our country,but also the world's first comprehensive index assessment of three-dimensional scanning for cardiovascular disease prevention and control at a national level.It holds a milestone significance for thedevelopmenttof cardiovascular disease prevention and treatment.展开更多
This paper attempts to propose a grand unified guiding principle of gauge fields from the mathematical and physical picture of fiber bundles: it is believed that our universe may have more fundamental interactions tha...This paper attempts to propose a grand unified guiding principle of gauge fields from the mathematical and physical picture of fiber bundles: it is believed that our universe may have more fundamental interactions than the four fundamental interactions, and the gauge fields of these fundamental interactions are just a unified gauge potential on the fiber bundle manifold or the components connected to the bottom manifold, that is, our universe;these components can meet the transformation of gauge potential, and even can be transformed from a fundamental interaction gauge potential to another fundamental interaction gauge potential, and can be summarized into a unified equation, namely the expression of the generalized gauge equation, corresponding to the gauge transformation invariance;so gauge transformation invariance is a necessary condition to unify field theory, but quantization of field is not a necessary condition;the four (or more) fundamental interaction fields of the universe are unified into a universal gauge field defined by the connection of the principal fiber bundle on the cosmic base manifold.展开更多
Grand canonical Monte Carlo simulation(GCMCs)is utilized for studying hydrogen storage gravimetric density by pha-graphene at different metal densities,temperatures and pressures.It is demonstrated that the optimum ad...Grand canonical Monte Carlo simulation(GCMCs)is utilized for studying hydrogen storage gravimetric density by pha-graphene at different metal densities,temperatures and pressures.It is demonstrated that the optimum adsorbent location for Li atoms is the center of the seven-membered ring of pha-graphene.The binding energy of Li-decorated phagraphene is larger than the cohesive energy of Li atoms,implying that Li can be distributed on the surface of pha-graphene without forming metal clusters.We fitted the force field parameters of Li and C atoms at different positions and performed GCMCs to study the absorption capacity of H_(2).The capacity of hydrogen storage was studied by the differing density of Li decoration.The maximum hydrogen storage capacity of 4Li-decorated pha-graphene was 15.88 wt%at 77 K and100 bar.The enthalpy values of adsorption at the three densities are in the ideal range of 15 kJ·mol^(-1)-25 kJ·mol^(-1).The GCMC results at different pressures and temperatures show that with the increase in Li decorative density,the hydrogen storage gravimetric ratio of pha-graphene decreases but can reach the 2025 US Department of Energy's standard(5.5 wt%).Therefore,pha-graphene is considered to be a potential hydrogen storage material.展开更多
Perceive a new tendency,see a new future,take advantage of new technologies and lead a new wave!From Mar.23rd-25th,the“2023 China Surfactant Industry Conference”and“2023 China International Surfactant Industry Expo...Perceive a new tendency,see a new future,take advantage of new technologies and lead a new wave!From Mar.23rd-25th,the“2023 China Surfactant Industry Conference”and“2023 China International Surfactant Industry Expo”were held fervently at Guangzhou Nanfeng Langham Hotel.This grand event was sponsored by China Research Institute of Daily Chemical Industry,undertaken by China Daily Chemical Industry Information Center and Surfactant&Detergent Industry Productivity Promotion Center.展开更多
On February 3,the 2023"Happy Chinese New Year"Float Parade and Square Celebration greeted the public in Port Louis,Mauritius.On the afternoon of that day,the streets of Port Louis were crowded with people bu...On February 3,the 2023"Happy Chinese New Year"Float Parade and Square Celebration greeted the public in Port Louis,Mauritius.On the afternoon of that day,the streets of Port Louis were crowded with people bustling with floats and flags flying.The grandly dressed people presented smile,with the streets filled with the joy of Chinese New Year.展开更多
Polish composer Chopin’s“Andante Spianato Et Grand Polonaise Brillante,Op.22”,composed in the 19th century,has distinctive features from compositional techniques to acoustic characteristics,and has very unique musi...Polish composer Chopin’s“Andante Spianato Et Grand Polonaise Brillante,Op.22”,composed in the 19th century,has distinctive features from compositional techniques to acoustic characteristics,and has very unique musical connotations,especially the often-mentioned national and melancholic features in Chopin’s music.Based on the research plan,this paper aims at exploring the nationalism and tragic content in Chopin’s works and further exploring the potential emotional and spiritual core of Chopin’s compositions through the study of his socio-psychological situation and his unique style of compositional techniques.展开更多
During the 3rd Belt and Road Forum for International Cooperation,the Children's Chorus of Xiaohuang Village Primary School from the hometown of Grand Song of the Dong Ethnic Group in Guizhou sang for guests at hom...During the 3rd Belt and Road Forum for International Cooperation,the Children's Chorus of Xiaohuang Village Primary School from the hometown of Grand Song of the Dong Ethnic Group in Guizhou sang for guests at home and abroad at China National Arts and Crafts Museum and China Intangible Cultural Heritage Museum(CTCM).The pure and beautiful voice won the praise of the foreign guests and the attention of allwalks oflife.展开更多
文摘AASHTO’s guideline for geometric design of highways and similar guidelines require that roadside areas on the inside of horizontal curves be cleared of high objects to provide stopping sight distance. The guidelines have analytical models for determining the extent of clearance, known as the horizontal sightline offset or clearance offset, for simple curves. Researchers in the past have developed analytical models for clearance offsets for spiraled and reverse curves. Very few researchers developed analytical models for available sight distances for compound curves. Still missing are models for horizontal sightline offsets and locations of the offsets for compound curves. The objective of this paper is to present development of analytical models and charts for determining horizontal sightline offsets and their locations for compound curves. The paper considers curves whose component arcs are individually shorter than stopping sight distance. The resulting models and the charts have been verified with accurate values determined using graphical methods. The models and the charts will find application in geometric design of highway compound curves.
文摘A discrete Hopf fibration of S15 over S8 with S7 (unit octonions) as fibers leads to a 16D Polytope P16 with 4320 vertices obtained from the convex hull of the 16D Barnes-Wall lattice Λ16. It is argued (conjectured) how a subsequent 2-1 mapping (projection) of P16 onto a 8D-hyperplane might furnish the 2160 vertices of the uniform 241 polytope in 8-dimensions, and such that one can capture the chain sequence of polytopes 241,231,221,211in D=8,7,6,5dimensions, leading, respectively, to the sequence of Coxeter groups E8,E7,E6,SO(10)which are putative GUT group candidates. An embedding of the E8⊕E8and E8⊕E8⊕E8lattice into the Barnes-Wall Λ16 and Leech Λ24 lattices, respectively, is explicitly shown. From the 16D lattice E8⊕E8one can generate two separate families of Elser-Sloane 4D quasicrystals (QC’s) with H4 (icosahedral) symmetry via the “cut-and-project” method from 8D to 4D in each separate E8 lattice. Therefore, one obtains in this fashion the Cartesian product of two Elser-Sloane QC’s Q×Qspanning an 8D space. Similarly, from the 24D lattice E8⊕E8⊕E8one can generate the Cartesian product of three Elser-Sloane 4D quasicrystals (QC’s) Q×Q×Qwith H4 symmetry and spanning a 12D space.
文摘On the occasion of the 10th anniversary of the Grand Canal's application for the World Heritage status in 2024,with the strong support of the Department of International Cooperation of the National Radio and Television Administration and the International Tourism Alliance of Silk Road Cities.
文摘On April 2,hosted by Network of International Culturalink Entities(NICE),Jiangsu Provincial Department of Culture and Tourism,and Wuxi Municipal People's Government,with special support from the International Cooperation Department of the National Radio and Television Administration,and undertake by Wuxi Municipal Culture,Radio,Television and Tourism Bureau and Wuxi Liangxi District People's Government,the launch ceremony of"Nihao!China"-China's Grand Canal Tourism Overseas Promotion Season 2024 washeld in Wuxi,Jiangsu Province.
文摘As a leading project of Beijing's visionary endeavor to construct a"City of Museums"and establish the Grand Canal Cultural Belt,the Grand Canal Museum of Beijing also an emblematic item fostering coordinated development between Beijing,Tianjin,and Hebei Province.It is an intelligent comprehensive museum that integrates the functions of exhibition,social education,cultural protection and conservation,collection and storage.
文摘A Grand Canal,spanning ancient and modern times,traversing north and south,flows endlessly.The Grand Canal,stretching nearly 3,200 kilometers and with a history of over 2,500 years,is the world's largest,longest,and oldest canal.On June 22,2014,the Grand Canal was officially inscribed on the World Heritage List by the World Heritage Committee at its 38th session.
基金This work was supported by Humanities and Social Sciences Fund of Ministry of Education of China(No.19XJA7520012020)by National Social Science Fund of China(No.20BWW069).
文摘David’s Story by Zoë Wicomb addresses the complexities of representing female suffering and the limitations of traditional historical narratives in capturing the experiences of marginalized bodies.It challenges the grand narratives of national history by emphasizing the indispensable role of women’s experiences.Through characters like Dulcie and Rachael,Wicomb portrays the female body as a site of resistance and resilience,highlighting the need for more nuanced and inclusive ways of documenting history.Underscoring the inexpressibility of trauma and the limitations of language and representation,the novel self-reflexively acknowledges its own aporia of completing the narrative,embodying the ongoing struggle to capture the full breadth of human experience.
文摘My grandpa is an elderly man in his seventies.He used to have black hair and now it's turning gray.He is tall and fat so he looks strong.My grandfather has 6 children.They are all kind to him and want him to have a happy life.They ask my grandpa to live with one of them,but he refuses them.He doesn't want to bother them,and he wants to live alone,either?
文摘The book initiates by portraying Africa,introducing its physical features and endowments,and providing a concise historical perspective that highlights Africa as the initial home of the human species.Subsequently,the book explores another epoch in Africa’s self-consciousness,focusing on the Pan-Africanism in the middle of the 20th century-the time when Africa had been greatly subjected to imperialism and colonialism,which plunged it into great destitution.
文摘Introduction: Grand multiparity is a known risk factor for maternal and fetal complications. Materials and Methods: We carried out a cross-sectional descriptive study on the delivery of grand multiparas at the maternity of the regional hospital annex of Ayos, a semi-rural locality in the Center region of Cameroon. The study covered the period from January 2012 through December 2020, and the objective was to assess the frequency, the determinants and the outcome of delivery in grand multiparas. Results: We recorded 1384 deliveries and enrolled 137 cases of delivery of grand multiparas. This gives a frequency of grand multipara delivery of 9.89%. The mean age of the women was 34.96 ± 4.45 years. Married parturients accounted for 65% of the cases and 16.8% were HIV positive. Delivery occurred at term in 89.9%. In 35.8%, no antenatal consultation was done. The use of the partograph during labor was reported in 11.7%. Per vaginal delivery was noted in 88.3%, emergency cesarean in 10.2% and elective cesarean in 1.5%. The most frequent maternal complications included post-partum hemorrhage (19.9%), genital tract tears (12.4%), endometritis (9.5%) and surgical wound infection (8.7%). No maternal death was recorded. The mean birth weight of the newborns was 3336.8 ± 550 g. Fetal complications were mostly represented by neonatal infection (20.1%), perinatal death (7.9%) and neonatal asphyxia (9.5%). Conclusion: The frequency of grand multiparous delivery in the semi-rural locality of Ayos, Cameroon, was 9.89%. The mean age of parturients was 38.96 years and the proportion of vaginal delivery was 88.3%.
文摘On May 26th,the China Cardiovascular Health Index 2023 was grandly released at the opening ceremony of the 17th Oriental Congress of Cardiology.The China Cardiovascular Health Index(CHI)is not only the first medical index-type indicator reflecting and measuring the status of cardiovascular diseases and treatment in our country,but also the world's first comprehensive index assessment of three-dimensional scanning for cardiovascular disease prevention and control at a national level.It holds a milestone significance for thedevelopmenttof cardiovascular disease prevention and treatment.
文摘This paper attempts to propose a grand unified guiding principle of gauge fields from the mathematical and physical picture of fiber bundles: it is believed that our universe may have more fundamental interactions than the four fundamental interactions, and the gauge fields of these fundamental interactions are just a unified gauge potential on the fiber bundle manifold or the components connected to the bottom manifold, that is, our universe;these components can meet the transformation of gauge potential, and even can be transformed from a fundamental interaction gauge potential to another fundamental interaction gauge potential, and can be summarized into a unified equation, namely the expression of the generalized gauge equation, corresponding to the gauge transformation invariance;so gauge transformation invariance is a necessary condition to unify field theory, but quantization of field is not a necessary condition;the four (or more) fundamental interaction fields of the universe are unified into a universal gauge field defined by the connection of the principal fiber bundle on the cosmic base manifold.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11904175,11804169,and 11804165)the Graduate Innovation Project of Jiangsu Province,China(Grant No.KYCX210700)。
文摘Grand canonical Monte Carlo simulation(GCMCs)is utilized for studying hydrogen storage gravimetric density by pha-graphene at different metal densities,temperatures and pressures.It is demonstrated that the optimum adsorbent location for Li atoms is the center of the seven-membered ring of pha-graphene.The binding energy of Li-decorated phagraphene is larger than the cohesive energy of Li atoms,implying that Li can be distributed on the surface of pha-graphene without forming metal clusters.We fitted the force field parameters of Li and C atoms at different positions and performed GCMCs to study the absorption capacity of H_(2).The capacity of hydrogen storage was studied by the differing density of Li decoration.The maximum hydrogen storage capacity of 4Li-decorated pha-graphene was 15.88 wt%at 77 K and100 bar.The enthalpy values of adsorption at the three densities are in the ideal range of 15 kJ·mol^(-1)-25 kJ·mol^(-1).The GCMC results at different pressures and temperatures show that with the increase in Li decorative density,the hydrogen storage gravimetric ratio of pha-graphene decreases but can reach the 2025 US Department of Energy's standard(5.5 wt%).Therefore,pha-graphene is considered to be a potential hydrogen storage material.
文摘Perceive a new tendency,see a new future,take advantage of new technologies and lead a new wave!From Mar.23rd-25th,the“2023 China Surfactant Industry Conference”and“2023 China International Surfactant Industry Expo”were held fervently at Guangzhou Nanfeng Langham Hotel.This grand event was sponsored by China Research Institute of Daily Chemical Industry,undertaken by China Daily Chemical Industry Information Center and Surfactant&Detergent Industry Productivity Promotion Center.
文摘On February 3,the 2023"Happy Chinese New Year"Float Parade and Square Celebration greeted the public in Port Louis,Mauritius.On the afternoon of that day,the streets of Port Louis were crowded with people bustling with floats and flags flying.The grandly dressed people presented smile,with the streets filled with the joy of Chinese New Year.
文摘Polish composer Chopin’s“Andante Spianato Et Grand Polonaise Brillante,Op.22”,composed in the 19th century,has distinctive features from compositional techniques to acoustic characteristics,and has very unique musical connotations,especially the often-mentioned national and melancholic features in Chopin’s music.Based on the research plan,this paper aims at exploring the nationalism and tragic content in Chopin’s works and further exploring the potential emotional and spiritual core of Chopin’s compositions through the study of his socio-psychological situation and his unique style of compositional techniques.
文摘During the 3rd Belt and Road Forum for International Cooperation,the Children's Chorus of Xiaohuang Village Primary School from the hometown of Grand Song of the Dong Ethnic Group in Guizhou sang for guests at home and abroad at China National Arts and Crafts Museum and China Intangible Cultural Heritage Museum(CTCM).The pure and beautiful voice won the praise of the foreign guests and the attention of allwalks oflife.
