Foreign-body ingestion is a relatively common presentation at emergency departments,but long metallic spoon swallowing is an infrequent occurrence.Unlike most cases of foreign-body ingestion,there have been no reporte...Foreign-body ingestion is a relatively common presentation at emergency departments,but long metallic spoon swallowing is an infrequent occurrence.Unlike most cases of foreign-body ingestion,there have been no reported cases of long foreign bodies reaching the jejunum.We report a rare case of a coffee spoon that was swallowed accidentally and passed through the pylorus and duodenal loop and reached the jejunum,with no complications.展开更多
Formulation of control objectives is a key issue in automatic control systems design. Although at first sight the desired goal （control objective） of a control system seems to be a trivial and obvious matter, for...Formulation of control objectives is a key issue in automatic control systems design. Although at first sight the desired goal （control objective） of a control system seems to be a trivial and obvious matter, for effectiveness of some high level robotic tasks, unusual exotic control objectives may be required. This paper presents a review of some exotic control objectives useful in robotics, such as velocity field control objective and range control objective. The paper also proposes a novel confinement control objective. The usefulness of these exotic control objectives may appear in safe robot-human interaction and self-protection of robots against collisions.展开更多
The paper addresses the disconnected students experience between evaluating their own writing and traditional evaluation methods, despite effective discussion and analysis in the classroom, especially, wide when stude...The paper addresses the disconnected students experience between evaluating their own writing and traditional evaluation methods, despite effective discussion and analysis in the classroom, especially, wide when students＇ reading skills are limited. The paper considers the application of flipping students＇ intense interest and intimate comprehension of video gaming into a lens for evaluating their writing. The sophisticated storylines in some literacy-laden video games rivet students＇ attention in higher order applications while the intricate plots and characters mirror those literary elements taught in print media. Garner comprehension is demandingly complex; transferring literary elements from the game storyline to their writing provides the comprehension carry-over for effective self-evaluation. They can ＂see＂ as a metaphor, those parallel concepts from screen to print, from playing strengths to reading and writing, for them, literary qualities become more transparent, and thus more accessible.展开更多
This paper will examine the essay, ＂Night Walks＂ （2000）, to see how Charles Dickens （1812-1870）, a social-realist writer of the Victorian era, has used elements adapted from the Romantics in order to draw attent...This paper will examine the essay, ＂Night Walks＂ （2000）, to see how Charles Dickens （1812-1870）, a social-realist writer of the Victorian era, has used elements adapted from the Romantics in order to draw attention to the pitiable social conditions of Victorian London. Dickens＇ the realist paradoxically reflected a readiness to think and feel ＂without immediate external excitement＂. He expressed his alignment with Romanticism by way of a cultivation of feeling and empathizing. His genius was, as expressed by Bagehot, ＂essentially irregular and unsymmetrical＂ because he was ＂utterly deficient in the faculty of reasoning＂. His daily, or rather nightly walks provided him with the inspiration to follow the Romantic tradition of writing on walks. The essay under consideration, ＂Night Walks＂, clearly supports the notion that Romanticism was fallaciously opposed to realism. The paper will examine the ways in which the theme, style, and structure of the essay evoke the preoccupation of a Romantic soul--for whom the walk becomes a space for ＂encounter and reflection＂--and the Romantic mind which is empowered by ＂imaginative self definition or discovery＂.展开更多
Mountain skiing has become a popular winter ecotourism activity in China. Studying the loyalty of eco-tourists from the perspective of tourist experience is important to the continued development of mountain ski touri...Mountain skiing has become a popular winter ecotourism activity in China. Studying the loyalty of eco-tourists from the perspective of tourist experience is important to the continued development of mountain ski tourism. Based on the flow experience theory, we developed and tested a structural equation model to examine relationships among flow experience, positive emotions and the loyalty of eco-tourists. Survey data from 324 eco-tourists with skiing experience at Daweishan Mountain Ski Resort was used for exploratory factor, confirmatory factor and path analyses. Results revealed five dimensions of flow experiences of eco-tourists： Concentration on task at hand, Loss of self-consciousness, Transformation of time, Autotelic experience, and Challenge-skill balance. As hypothesized, influences of Transformation of time, Autotelic experience and Challenge-skill balance on positive emotions were significant and positive. Concentration on task at hand, Autotelic experience, Challenge-skill balance and positive emotions positively influenced the loyalty of eco-tourists. Suggestions for developing ecotourism products are discussed such as designing a conductive environment to activate flow experience, providing personalized service to promote positive emotion, and developing experiential tourism activities.展开更多
As the COVID-19 pandemic continues to spread, the global tourism industry is facing enormous challenges. There is an urgent need to explore an effective path for tourism to recover and revitalize. With the normalizati...As the COVID-19 pandemic continues to spread, the global tourism industry is facing enormous challenges. There is an urgent need to explore an effective path for tourism to recover and revitalize. With the normalization of the epidemic, tourism destinations will pay more attention to the prevention, warning, and coping strategies of the epidemic, and this focus will also be evident in the study of tourism destination resilience in the post-epidemic period. Some studies on the epidemic and the resilience of tourism are currently underway, but few of them are integrated with research on the resilience of tourism destinations in the post-epidemic period, although no systematic research ideas or methods have been found. Based on resilience theory, this paper summarizes the general research ideas and develops an epidemic resilience model suitable for urban tourism destinations. The present study also proposes a set of research methods based on the index system to analyze the resilience and its spatiotemporal dynamic characteristics of tourism destinations in the post-epidemic period. The methodology can be divided into three stages: Firstly, construct the conceptual model and evaluation system for tourism destination resilience;Secondly, select case sites for empirical analysis, measure the resilience of tourism destinations, and analyze the characteristics of spatiotemporal differences and subsequent factors of influence;And finally, establish an adaptive management mechanism for tourism destinations to use in response to the epidemic and in guiding the formulation of post-epidemic recovery policies.展开更多
The skiing economy is a typical experience economy,so understanding the experience of ski tourists is essential to the development of the destination.To enrich the tourism experience research in the emerging ski marke...The skiing economy is a typical experience economy,so understanding the experience of ski tourists is essential to the development of the destination.To enrich the tourism experience research in the emerging ski market,this paper studies the 7118 online reviews of beginner skiers by selecting the main ski resorts in China as a case study.The content analysis method and sentiment analysis based on the domain lexicon and custom rules are combined to explore the perception characteristics of the beginners from the two aspects of experience dimension and experience satisfaction.Three main results were found.(1)The five main dimensions that affect the ski tourism experience of beginners are interaction perception,price perception,reputation perception,risk perception and functional perception.(2)For beginners,skiing is the primary purpose of tourism instead of being the critical factor of the positive reviews.They pay more attention to the pleasure produced by interpersonal interactions.(3)From 2014/2015 ski season to 2010/2021 ski season,the positive sentiment of beginners had no obvious change,while the negative sentiment showed a continuous downward trend,and the negative sentiment was mainly distributed among reviews on price,low temperature and service.This paper not only expands the research perspective of ski tourism,but also provides managerial inspiration for ski destinations interested in attracting beginners from the emerging ski markets.展开更多
文摘Foreign-body ingestion is a relatively common presentation at emergency departments,but long metallic spoon swallowing is an infrequent occurrence.Unlike most cases of foreign-body ingestion,there have been no reported cases of long foreign bodies reaching the jejunum.We report a rare case of a coffee spoon that was swallowed accidentally and passed through the pylorus and duodenal loop and reached the jejunum,with no complications.
文摘Formulation of control objectives is a key issue in automatic control systems design. Although at first sight the desired goal （control objective） of a control system seems to be a trivial and obvious matter, for effectiveness of some high level robotic tasks, unusual exotic control objectives may be required. This paper presents a review of some exotic control objectives useful in robotics, such as velocity field control objective and range control objective. The paper also proposes a novel confinement control objective. The usefulness of these exotic control objectives may appear in safe robot-human interaction and self-protection of robots against collisions.
文摘The paper addresses the disconnected students experience between evaluating their own writing and traditional evaluation methods, despite effective discussion and analysis in the classroom, especially, wide when students＇ reading skills are limited. The paper considers the application of flipping students＇ intense interest and intimate comprehension of video gaming into a lens for evaluating their writing. The sophisticated storylines in some literacy-laden video games rivet students＇ attention in higher order applications while the intricate plots and characters mirror those literary elements taught in print media. Garner comprehension is demandingly complex; transferring literary elements from the game storyline to their writing provides the comprehension carry-over for effective self-evaluation. They can ＂see＂ as a metaphor, those parallel concepts from screen to print, from playing strengths to reading and writing, for them, literary qualities become more transparent, and thus more accessible.
文摘This paper will examine the essay, ＂Night Walks＂ （2000）, to see how Charles Dickens （1812-1870）, a social-realist writer of the Victorian era, has used elements adapted from the Romantics in order to draw attention to the pitiable social conditions of Victorian London. Dickens＇ the realist paradoxically reflected a readiness to think and feel ＂without immediate external excitement＂. He expressed his alignment with Romanticism by way of a cultivation of feeling and empathizing. His genius was, as expressed by Bagehot, ＂essentially irregular and unsymmetrical＂ because he was ＂utterly deficient in the faculty of reasoning＂. His daily, or rather nightly walks provided him with the inspiration to follow the Romantic tradition of writing on walks. The essay under consideration, ＂Night Walks＂, clearly supports the notion that Romanticism was fallaciously opposed to realism. The paper will examine the ways in which the theme, style, and structure of the essay evoke the preoccupation of a Romantic soul--for whom the walk becomes a space for ＂encounter and reflection＂--and the Romantic mind which is empowered by ＂imaginative self definition or discovery＂.
基金Humanities and Social Science Foundation of Hunan Province(16JD48)
文摘Mountain skiing has become a popular winter ecotourism activity in China. Studying the loyalty of eco-tourists from the perspective of tourist experience is important to the continued development of mountain ski tourism. Based on the flow experience theory, we developed and tested a structural equation model to examine relationships among flow experience, positive emotions and the loyalty of eco-tourists. Survey data from 324 eco-tourists with skiing experience at Daweishan Mountain Ski Resort was used for exploratory factor, confirmatory factor and path analyses. Results revealed five dimensions of flow experiences of eco-tourists： Concentration on task at hand, Loss of self-consciousness, Transformation of time, Autotelic experience, and Challenge-skill balance. As hypothesized, influences of Transformation of time, Autotelic experience and Challenge-skill balance on positive emotions were significant and positive. Concentration on task at hand, Autotelic experience, Challenge-skill balance and positive emotions positively influenced the loyalty of eco-tourists. Suggestions for developing ecotourism products are discussed such as designing a conductive environment to activate flow experience, providing personalized service to promote positive emotion, and developing experiential tourism activities.
基金The Major Project of Beijing Social Science Foundation (19ZDA11)。
文摘As the COVID-19 pandemic continues to spread, the global tourism industry is facing enormous challenges. There is an urgent need to explore an effective path for tourism to recover and revitalize. With the normalization of the epidemic, tourism destinations will pay more attention to the prevention, warning, and coping strategies of the epidemic, and this focus will also be evident in the study of tourism destination resilience in the post-epidemic period. Some studies on the epidemic and the resilience of tourism are currently underway, but few of them are integrated with research on the resilience of tourism destinations in the post-epidemic period, although no systematic research ideas or methods have been found. Based on resilience theory, this paper summarizes the general research ideas and develops an epidemic resilience model suitable for urban tourism destinations. The present study also proposes a set of research methods based on the index system to analyze the resilience and its spatiotemporal dynamic characteristics of tourism destinations in the post-epidemic period. The methodology can be divided into three stages: Firstly, construct the conceptual model and evaluation system for tourism destination resilience;Secondly, select case sites for empirical analysis, measure the resilience of tourism destinations, and analyze the characteristics of spatiotemporal differences and subsequent factors of influence;And finally, establish an adaptive management mechanism for tourism destinations to use in response to the epidemic and in guiding the formulation of post-epidemic recovery policies.
基金The Fundamental Research Funds for the Central Universities(2019JBWB002)The Major Project of National Social Science Foundation of China(20ZDA067)The General Project of Humanities and Social Sciences Research of National Level(17BTY057).
文摘The skiing economy is a typical experience economy,so understanding the experience of ski tourists is essential to the development of the destination.To enrich the tourism experience research in the emerging ski market,this paper studies the 7118 online reviews of beginner skiers by selecting the main ski resorts in China as a case study.The content analysis method and sentiment analysis based on the domain lexicon and custom rules are combined to explore the perception characteristics of the beginners from the two aspects of experience dimension and experience satisfaction.Three main results were found.(1)The five main dimensions that affect the ski tourism experience of beginners are interaction perception,price perception,reputation perception,risk perception and functional perception.(2)For beginners,skiing is the primary purpose of tourism instead of being the critical factor of the positive reviews.They pay more attention to the pleasure produced by interpersonal interactions.(3)From 2014/2015 ski season to 2010/2021 ski season,the positive sentiment of beginners had no obvious change,while the negative sentiment showed a continuous downward trend,and the negative sentiment was mainly distributed among reviews on price,low temperature and service.This paper not only expands the research perspective of ski tourism,but also provides managerial inspiration for ski destinations interested in attracting beginners from the emerging ski markets.
