Financial time series have been analyzed with a wide variety of models and approaches,some of which can forecast with great accuracy.However,most of these models,especially the machine learning ones,cannot show additi...Financial time series have been analyzed with a wide variety of models and approaches,some of which can forecast with great accuracy.However,most of these models,especially the machine learning ones,cannot show additional information for the decision maker or the financial analyst.The notion of causality is a concept that provides a more complete understanding of a problem beyond improved forecasts.In this study,we propose integrating the treatment/control concept of causality into a forecasting framework to better predict financial time series.Our results show that the proposed methodology outperforms classic econometric approaches such as ARIMA and Random Walk,as well as machine learning approaches without the proposed methodology.This improvement is statistically significant,as indicated by the Model Confidence Set test in the complete test set and quarterly analysis.展开更多
Classical Physics is a branch of Physics that should be described by classical notions, which define emergent phenomena. An Emergent Phenomenon is a property that is a result of simple interactions that work cooperati...Classical Physics is a branch of Physics that should be described by classical notions, which define emergent phenomena. An Emergent Phenomenon is a property that is a result of simple interactions that work cooperatively to create a more complex interaction. Physically, simple interactions occur at a microscopic level, and the collective result can be observed at a macroscopic level. The developed Hypersphere World-Universe Model (WUM) introduces classical notions, when the very first ensemble of particles was created at the cosmological time π<sub>M</sub> ≅ 10<sup>-18</sup> and become possible to introduce the notion “Medium of the World”. We emphasize that Classical Physics is principally different from Quantum Physics that describes quantum objects, which have four-momenta only. Classical Physics is dealing with ensembles of quantum objects! The present paper discusses the Basic Notions of Classical Physics considering a principally different cosmological model WUM, which is, in fact, a Paradigm Shift for Cosmology. WUM is a natural continuation of Classical Physics, and it can already serve as a basis for a New Cosmology proposed by Paul Dirac in 1937.展开更多
This paper presents a kind of visual programming, which is called R-technology of programming. The R-technology is independent of any programming language or operating system and the R-chart is in accord with internat...This paper presents a kind of visual programming, which is called R-technology of programming. The R-technology is independent of any programming language or operating system and the R-chart is in accord with international standard (ISO 8631H). The package of R-technology has been applied to the high level languages such as PASCAL, C, ASSEMBLER, FORTRAN, PL/1, MODULA-2 and RTRAN. This package is applied to computers ranging from mainframes (IBM 370) and minis (VAX) to micros (IBM/PC).展开更多
Current SLA theories have delivered important language-learning notions. This paper will report the results of a study into 64 high school English teachers＇ beliefs about language learning and their instructional pra...Current SLA theories have delivered important language-learning notions. This paper will report the results of a study into 64 high school English teachers＇ beliefs about language learning and their instructional practices, with a focus on two of them. A questionnaire was developed on the basis of major tenets of second language learning and administered to the 64 participants. In addition, classroom observations and interviews were employed to explore the two focal teachers＇ beliefs and their actual classroom instruction practices. Results show both consistencies and inconsistencies between the participants＇ beliefs and major SLA notions and between the two focal participants＇ beliefs and their classroom practices.展开更多
Upon celebrating the 50<sup>th</sup> anniversary of the Urban Planning Society of China,it is particularly important to learn from the foreign lessons,to summarize the historical experiences, to confront t...Upon celebrating the 50<sup>th</sup> anniversary of the Urban Planning Society of China,it is particularly important to learn from the foreign lessons,to summarize the historical experiences, to confront the current challenges and to look out into the future,so as to seriously examine what exactly are the notions to be cherished by China’s urban planning profes-展开更多
In summer 2021, veteran sprinte Su Bingtian, endearingly dubbed the "flying man" by fans, set a new Asian record at 9.83 seconds in the men’s 100-meter dash during the Tokyo Olympics semifinals, making him ...In summer 2021, veteran sprinte Su Bingtian, endearingly dubbed the "flying man" by fans, set a new Asian record at 9.83 seconds in the men’s 100-meter dash during the Tokyo Olympics semifinals, making him the firs Chinese athlete to qualify for the event’s final. Following his achievement, some people in China hailed Su as YYDS, acro nym for yongyuan di shen.展开更多
Species boundaries are dynamic and constantly challenged by gene flow.Understanding the strategies different lineages adopt to maintain ecological and genetic distinctiveness requires employing an integrative species ...Species boundaries are dynamic and constantly challenged by gene flow.Understanding the strategies different lineages adopt to maintain ecological and genetic distinctiveness requires employing an integrative species concept that incorporates data from a variety of sources.In this study,we incorporated genetic,ecological,and environmental evidence to assess the extent of speciation or evolutionary divergence within a monophyletic yet dimorphic group(i.e.,clade Leucolirion consisting of six species)within the genus Lilium.This clade consists of two lineages that exhibit unexpectedly distinct perianth appearances:whitish trumpet(funnel form,encompassing four species)and orange recurved(reflex form,including two species),respectively,which are separated by completely different pollination syndromes.Transcriptome-based nuclear and plastome datasets indicate that these two lineages are isolated,with only weak ancient gene flow between them.Within each lineage,several taxa with incomplete isolation have diverged,as indicated by weak genetic structure,strong gene flow,and conflicts between nuclear and chloroplast phylogenies,especially in the trumpet lineage.Although these taxa are not entirely independent,our evidence indicates that they are diverging,with recent gene flow disappearing and multiple isolation strategies emerging,such as differences in flowering time and niche specialization.Taken together,our findings suggest that species divergence and maintenance in Lilium are driven by a combination of adaptive and non-adaptive processes,highlighting the complex interplay of historical climate changes,ecological adaptation,and gene flow in shaping biodiversity within this genus.展开更多
Mathematical teaching and learning of an introductory calculus conception of limit in secondary school before students learn the formal definition of limit in higher education are discussed.In this study,applications ...Mathematical teaching and learning of an introductory calculus conception of limit in secondary school before students learn the formal definition of limit in higher education are discussed.In this study,applications of the theory of instruction based on“Formalizing Introductory Notions(FIN)”(Nagle,2013),in which a theory incorporating new pedagogical approaches was introduced to describe static notions of limit,without ignoring dynamic notions of limit,are presented to help foster an informal limit conception better aligned with the formal definition.A qualitative discourse analysis based on students’utterances,including students’drawing pictures on graphs,was done.In the results of the investigation,it was found that the students’utterances drawings on a graph of the secants(segments)used static notions of limit supported by dynamic notions of limit according to the operating activities.There were learning activities in which students developed a notion of limit as the proximity of the predicted tangent line of a function.Consequently,students’discussions changed focus to the validation of limit candidates with static notions of limit.To overcome the contradiction of their explanations of the operating activities with dynamic notions of limit,the students changed to an explanation with static notions of limit.In light of the findings,this study suggests adapting the pedagogical approach used by the Nagle(2013).展开更多
In this paper, we introduced the notion of uniform convergence of the linear operators on the probabilistic nornied space, and the notion of probabilistic distance between the operators, which describes the above conv...In this paper, we introduced the notion of uniform convergence of the linear operators on the probabilistic nornied space, and the notion of probabilistic distance between the operators, which describes the above convergence completely. In terms of these notions, we obtained the essential features of the continuity of operators, and of the uniform convergence of operator sequences, and we also obtained the closure of continuity and complete continuity under the operation of the limit of uniform convergence.展开更多
Women are the backbone of our rural as well as national economy.Agriculture is the main occupation for more than 60%of Indian population and half of its population is sufficed by women.They play pivot role in the tota...Women are the backbone of our rural as well as national economy.Agriculture is the main occupation for more than 60%of Indian population and half of its population is sufficed by women.They play pivot role in the total GDP,but how far their role is paid attention or measured is a major question all over the nation.In fact,conferences,seminars and workshops are taking places on this vital issue genuinely and even policies come in the form of proceedings but on ground level reality is something different.Still in some part of the country girls are not being provided equal rights for their health,education and in decision making process.Women play multipronged role starting from dawn to dusk but due to illiteracy,poverty and pre-occupied notions in some societies(that girl child are cursed not boon)female infanticide and their trafficking for prostitution or for domestic help.Not only in India but it’s a matter of concern across the world.Across the world women faces more or less same challenges and problems.Although they play a major role in nurturing their kids,agricultural production and its post harvest management but when it comes to their right and participation in decision making process,it comes minimum or negligent ratio as compared to their male counterparts.It’s said that they are equal to boys but in reality they are not.展开更多
THE beautiful area of mountains and rivers atthe juncture of Hunan, Gulzhou and GuangxiZhuang Autonomous Region is irthabited byover 1 million Dong people. Because of the area’sgeographic remoteness, this minority et...THE beautiful area of mountains and rivers atthe juncture of Hunan, Gulzhou and GuangxiZhuang Autonomous Region is irthabited byover 1 million Dong people. Because of the area’sgeographic remoteness, this minority ethnic groupformed its own notions on nature over the centuries.The Dong ancestors worshiped snakes, a tradition thathas not entirely died out today.In the traditional concept of the Dong people,snakes are not ordinary reptiles but supernatural展开更多
CLT in China has experienced a lot of ups and downs, which has given rise to some skepticism and criticisms from some Chinese ESL/EFL instructors and learners. drawing on the theoretical notions of symbolic violence, ...CLT in China has experienced a lot of ups and downs, which has given rise to some skepticism and criticisms from some Chinese ESL/EFL instructors and learners. drawing on the theoretical notions of symbolic violence, and correlations between identity, language and representation, this paper tends to explore the main constrains that result in the failure of using CLT in Chinese ESL/EFL classroom and figure out whether CLT could be a viable approach for ESL/EFL teaching and learning in Chinese higher education.展开更多
The whole paper advocates translating on discourse level to achieveequivalence between the source language and the receptor language.As thetitle suggests,there would be no understanding of equivalent translation witho...The whole paper advocates translating on discourse level to achieveequivalence between the source language and the receptor language.As thetitle suggests,there would be no understanding of equivalent translation withoutunderstanding first what discourse is.Upon this assumption,the paper dealswith the notion of discourse first.1.The definition of discourse1.1 What is meant by“discourse”Linguists have various opinions on the term“discourse”.S.J.Schmidtregards discourse as the part that contains a theme of communicative展开更多
基金ANID for supporting the Fondecyt project 1200555.
文摘Financial time series have been analyzed with a wide variety of models and approaches,some of which can forecast with great accuracy.However,most of these models,especially the machine learning ones,cannot show additional information for the decision maker or the financial analyst.The notion of causality is a concept that provides a more complete understanding of a problem beyond improved forecasts.In this study,we propose integrating the treatment/control concept of causality into a forecasting framework to better predict financial time series.Our results show that the proposed methodology outperforms classic econometric approaches such as ARIMA and Random Walk,as well as machine learning approaches without the proposed methodology.This improvement is statistically significant,as indicated by the Model Confidence Set test in the complete test set and quarterly analysis.
文摘Classical Physics is a branch of Physics that should be described by classical notions, which define emergent phenomena. An Emergent Phenomenon is a property that is a result of simple interactions that work cooperatively to create a more complex interaction. Physically, simple interactions occur at a microscopic level, and the collective result can be observed at a macroscopic level. The developed Hypersphere World-Universe Model (WUM) introduces classical notions, when the very first ensemble of particles was created at the cosmological time π<sub>M</sub> ≅ 10<sup>-18</sup> and become possible to introduce the notion “Medium of the World”. We emphasize that Classical Physics is principally different from Quantum Physics that describes quantum objects, which have four-momenta only. Classical Physics is dealing with ensembles of quantum objects! The present paper discusses the Basic Notions of Classical Physics considering a principally different cosmological model WUM, which is, in fact, a Paradigm Shift for Cosmology. WUM is a natural continuation of Classical Physics, and it can already serve as a basis for a New Cosmology proposed by Paul Dirac in 1937.
文摘This paper presents a kind of visual programming, which is called R-technology of programming. The R-technology is independent of any programming language or operating system and the R-chart is in accord with international standard (ISO 8631H). The package of R-technology has been applied to the high level languages such as PASCAL, C, ASSEMBLER, FORTRAN, PL/1, MODULA-2 and RTRAN. This package is applied to computers ranging from mainframes (IBM 370) and minis (VAX) to micros (IBM/PC).
文摘Current SLA theories have delivered important language-learning notions. This paper will report the results of a study into 64 high school English teachers＇ beliefs about language learning and their instructional practices, with a focus on two of them. A questionnaire was developed on the basis of major tenets of second language learning and administered to the 64 participants. In addition, classroom observations and interviews were employed to explore the two focal teachers＇ beliefs and their actual classroom instruction practices. Results show both consistencies and inconsistencies between the participants＇ beliefs and major SLA notions and between the two focal participants＇ beliefs and their classroom practices.
文摘Upon celebrating the 50<sup>th</sup> anniversary of the Urban Planning Society of China,it is particularly important to learn from the foreign lessons,to summarize the historical experiences, to confront the current challenges and to look out into the future,so as to seriously examine what exactly are the notions to be cherished by China’s urban planning profes-
文摘In summer 2021, veteran sprinte Su Bingtian, endearingly dubbed the "flying man" by fans, set a new Asian record at 9.83 seconds in the men’s 100-meter dash during the Tokyo Olympics semifinals, making him the firs Chinese athlete to qualify for the event’s final. Following his achievement, some people in China hailed Su as YYDS, acro nym for yongyuan di shen.
基金supported by the National Natural Science Foundation of China(NSFC Grant Nos.32171605,31770406)Natural Science Foundation of Sichuan Province(Grant No.2023NSFSC0141)to Y.D.Gao.
文摘Species boundaries are dynamic and constantly challenged by gene flow.Understanding the strategies different lineages adopt to maintain ecological and genetic distinctiveness requires employing an integrative species concept that incorporates data from a variety of sources.In this study,we incorporated genetic,ecological,and environmental evidence to assess the extent of speciation or evolutionary divergence within a monophyletic yet dimorphic group(i.e.,clade Leucolirion consisting of six species)within the genus Lilium.This clade consists of two lineages that exhibit unexpectedly distinct perianth appearances:whitish trumpet(funnel form,encompassing four species)and orange recurved(reflex form,including two species),respectively,which are separated by completely different pollination syndromes.Transcriptome-based nuclear and plastome datasets indicate that these two lineages are isolated,with only weak ancient gene flow between them.Within each lineage,several taxa with incomplete isolation have diverged,as indicated by weak genetic structure,strong gene flow,and conflicts between nuclear and chloroplast phylogenies,especially in the trumpet lineage.Although these taxa are not entirely independent,our evidence indicates that they are diverging,with recent gene flow disappearing and multiple isolation strategies emerging,such as differences in flowering time and niche specialization.Taken together,our findings suggest that species divergence and maintenance in Lilium are driven by a combination of adaptive and non-adaptive processes,highlighting the complex interplay of historical climate changes,ecological adaptation,and gene flow in shaping biodiversity within this genus.
文摘Mathematical teaching and learning of an introductory calculus conception of limit in secondary school before students learn the formal definition of limit in higher education are discussed.In this study,applications of the theory of instruction based on“Formalizing Introductory Notions(FIN)”(Nagle,2013),in which a theory incorporating new pedagogical approaches was introduced to describe static notions of limit,without ignoring dynamic notions of limit,are presented to help foster an informal limit conception better aligned with the formal definition.A qualitative discourse analysis based on students’utterances,including students’drawing pictures on graphs,was done.In the results of the investigation,it was found that the students’utterances drawings on a graph of the secants(segments)used static notions of limit supported by dynamic notions of limit according to the operating activities.There were learning activities in which students developed a notion of limit as the proximity of the predicted tangent line of a function.Consequently,students’discussions changed focus to the validation of limit candidates with static notions of limit.To overcome the contradiction of their explanations of the operating activities with dynamic notions of limit,the students changed to an explanation with static notions of limit.In light of the findings,this study suggests adapting the pedagogical approach used by the Nagle(2013).
文摘In this paper, we introduced the notion of uniform convergence of the linear operators on the probabilistic nornied space, and the notion of probabilistic distance between the operators, which describes the above convergence completely. In terms of these notions, we obtained the essential features of the continuity of operators, and of the uniform convergence of operator sequences, and we also obtained the closure of continuity and complete continuity under the operation of the limit of uniform convergence.
文摘Women are the backbone of our rural as well as national economy.Agriculture is the main occupation for more than 60%of Indian population and half of its population is sufficed by women.They play pivot role in the total GDP,but how far their role is paid attention or measured is a major question all over the nation.In fact,conferences,seminars and workshops are taking places on this vital issue genuinely and even policies come in the form of proceedings but on ground level reality is something different.Still in some part of the country girls are not being provided equal rights for their health,education and in decision making process.Women play multipronged role starting from dawn to dusk but due to illiteracy,poverty and pre-occupied notions in some societies(that girl child are cursed not boon)female infanticide and their trafficking for prostitution or for domestic help.Not only in India but it’s a matter of concern across the world.Across the world women faces more or less same challenges and problems.Although they play a major role in nurturing their kids,agricultural production and its post harvest management but when it comes to their right and participation in decision making process,it comes minimum or negligent ratio as compared to their male counterparts.It’s said that they are equal to boys but in reality they are not.
文摘THE beautiful area of mountains and rivers atthe juncture of Hunan, Gulzhou and GuangxiZhuang Autonomous Region is irthabited byover 1 million Dong people. Because of the area’sgeographic remoteness, this minority ethnic groupformed its own notions on nature over the centuries.The Dong ancestors worshiped snakes, a tradition thathas not entirely died out today.In the traditional concept of the Dong people,snakes are not ordinary reptiles but supernatural
文摘CLT in China has experienced a lot of ups and downs, which has given rise to some skepticism and criticisms from some Chinese ESL/EFL instructors and learners. drawing on the theoretical notions of symbolic violence, and correlations between identity, language and representation, this paper tends to explore the main constrains that result in the failure of using CLT in Chinese ESL/EFL classroom and figure out whether CLT could be a viable approach for ESL/EFL teaching and learning in Chinese higher education.
文摘The whole paper advocates translating on discourse level to achieveequivalence between the source language and the receptor language.As thetitle suggests,there would be no understanding of equivalent translation withoutunderstanding first what discourse is.Upon this assumption,the paper dealswith the notion of discourse first.1.The definition of discourse1.1 What is meant by“discourse”Linguists have various opinions on the term“discourse”.S.J.Schmidtregards discourse as the part that contains a theme of communicative
