Historically,geopolitical risk(GPR)has posed significant challenges to international economic,social,and political frameworks.This study investigated how internal GPR in the selected five Southeast Asian countries(Ind...Historically,geopolitical risk(GPR)has posed significant challenges to international economic,social,and political frameworks.This study investigated how internal GPR in the selected five Southeast Asian countries(Indonesia,South Korea,Malaysia,the Philippines,and Thailand)influences foreign direct investment(FDI)during 1996-2019.The stationarity of the data was assessed using the Augmented Dickey-Fuller(ADF)unit root test,which shows that the data became stationary after the first difference.The Kao,Pedroni,and Westerlund cointegration tests were employed to examine long-term cointegration among the selected variables(FDI,GPR index(GPRI),gross domestic product(GDP),inflation,interest rate,and trade openness(TOP)).The results indicated that these variables have a long-term cointegration.Consequently,regression analysis using the Pooled Ordinary Least Squares(OLS)regression,fixed effect,random effect,Arellano-Bond dynamic panel-data estimation,and system generalized moment method(GMM)revealed that GPRI and TOP negatively impacted FDI in the selected five Southeast Asian countries.At the same time,GDP,inflation,and interest rate positively influenced FDI in these countries.Because FDI is crucial to shaping a country’s macroeconomic structure,this study recommends that governments and central banks of the selected five Southeast Asian countries should implement policies and strategies to encourage foreign investments.展开更多
By a linear Cournot model, the factors associated with the integration of two firms are discussed in terms of their effects on the private surplus and the social welfare in economies with varying extent of openness. M...By a linear Cournot model, the factors associated with the integration of two firms are discussed in terms of their effects on the private surplus and the social welfare in economies with varying extent of openness. Meanwhile, the trade policy of the host government is taken into account. It is concluded that the more open the economy and the more intense the competition, the less profitable the integration; the most important determinant to the changes of the domestic social welfare is the industry strength of the host country. The host authority can enhance the domestic social welfare in two ways: to adjust the trade policy and to only approve the socially desirable cross-border mergers and acquisitions.展开更多
The energy demand in Australia is increasing with the industrialization and rapid economic growth.This study analyzed the relationships among the economic growth,Foreign Direct Investment(FDI),trade openness,urbanizat...The energy demand in Australia is increasing with the industrialization and rapid economic growth.This study analyzed the relationships among the economic growth,Foreign Direct Investment(FDI),trade openness,urbanization,and energy usage in Australia based on the data from World Development Indicators(WDI)from 1972 to 2021.The results indicates that there is a cointegration among economic growth,FDI,trade openness,urbanization,and energy usage,which was traced through the autoregressivedistributed lag(ARDL).The Zivot-Andrews unit root test reveals that energy usage,economic growth,FDI,urbanization,and trade openness show significant structural breaks in 1993,1996,1982,2008,and 1994,respectively.The ARDL model shows that economic growth has a positive and significant effect on energy usage in the long-run(0.814)and short-run(0.809).Moreover,the results also show that FDI(0.028)and trade openness(0.043)have positive impacts on energy usage in the long-run.However,urbanization shows a negative and significant influence on energy usage in the long-run(–0.965).Then,the research demonstrates a unidirectional causation between energy usage and trade openness,with energy usage significantly causing trade openness.The current study endorses energy consumption policies and investment strategies for a paradigm shifting from a reliance on fossil fuels as the primary energy source to renewable energy sources.These findings have profound implications for sustainable energy usage.展开更多
"Policy of People’s Bank of China is veryenlightened. Conditions for foreign capitalentering into are very relaxed. After the FordCompany received the soliciting opiniondraft of Measures, we quickly translated i..."Policy of People’s Bank of China is veryenlightened. Conditions for foreign capitalentering into are very relaxed. After the FordCompany received the soliciting opiniondraft of Measures, we quickly translated itinto English and sent it by fax to theHeadquarters of Ford Auto Finance Co. forresearch. We are very excided for theenlightenment of the people’s Bank ofChina." Mr. Xu Guozheng, Vice Presidentof Ford Auto(China) Co. Ltd. Answeredquestions from the reporter with pleasure onOctober 10, 2002.展开更多
On December 11,2020,State Councilor and Minister of Foreign Affairs Wang Yi attended the opening of the Symposium on the Intermational Situation and China's Foreign Relations in 2020 in Beijing,and delivered a key...On December 11,2020,State Councilor and Minister of Foreign Affairs Wang Yi attended the opening of the Symposium on the Intermational Situation and China's Foreign Relations in 2020 in Beijing,and delivered a keynote speech entitled“Serving the Country and Contributing to the World:China's Diplomacy in a Time of Unprecedented Global Changes and a Once-in-a-Century Pandemic.”展开更多
Hunan is situated on themiddle reaches of theYangtze River.As most partof the province lies on thesouth of Dongting Lake,it iscalled Hunan.Also it is called"Xiang"for the vast XiangRiver that runs through it...Hunan is situated on themiddle reaches of theYangtze River.As most partof the province lies on thesouth of Dongting Lake,it iscalled Hunan.Also it is called"Xiang"for the vast XiangRiver that runs through itfrom south to north.Furthermore,it is known asthe Hibiscus Kingdom dueto the abundant hibiscusthere,described in theancient poem"Autumn WindBlows through the HibiscusKingdom".展开更多
The Eighth Five-year Plan period wasa fast growing period for Jiangsu’sforeign economic and technical co-operation. Guided by the policy of seizingopportunities, expanding the opening driveand promoting development, ...The Eighth Five-year Plan period wasa fast growing period for Jiangsu’sforeign economic and technical co-operation. Guided by the policy of seizingopportunities, expanding the opening driveand promoting development, all the staff atthe provincial foreign economic front madeevery effort to fulfill the goal of the sus-tained, fast and healthy development in for-展开更多
This study aims to find out the effect of the model of ODL (Open and Distance Learning) for teaching Indonesian for foreign and whether this model of ODL implements socio-cultural and psychological approaches. The s...This study aims to find out the effect of the model of ODL (Open and Distance Learning) for teaching Indonesian for foreign and whether this model of ODL implements socio-cultural and psychological approaches. The students' learning of Indonesian for foreign is in so many aspects that it must be considered from both psychological aspects of students' language and cultural aspects. The research was carried out on foreign students' studying Indonesian language. The research method used action research. ODL model developed this concerning how the students are anxious in foreign language learning and language use in accordance with Indonesian culture. The model of ODL for teaching foreign Indonesian uses the Internet facilities such as email, Skype, VolP, Google Talk, circulating document with comments, chat, forum, CD, audio-video, stream media player, and e-learning system. Based on the results of this study which is that students study the model ODL for teaching Indonesian through socio-cultural approach and psychological aspects and students of Indonesian for foreign improve their ability to use the Indonesian language, students are able to converse fluently in Indonesian in accordance with Indonesian culture展开更多
It has been our consistent policy to expand the opening policy, while using foreign capital reasonably and effectively. Our experience of economic development since China’s economic reform and opening to the outside ...It has been our consistent policy to expand the opening policy, while using foreign capital reasonably and effectively. Our experience of economic development since China’s economic reform and opening to the outside world 20 years ago has shown that implementing the opening policy, participation in the international division of labour and exchange, the use of both domestic and international markets and resources, and the introduction of a foreign展开更多
Under the strategic background of“The Belt and Road”,the talents with comprehensive application ability and scientif ic and technological creativity are needed for the international society in the future.At present,...Under the strategic background of“The Belt and Road”,the talents with comprehensive application ability and scientif ic and technological creativity are needed for the international society in the future.At present,Zigong Radio&TV University is in a period of transformation and development.Therefore,the introduction of multiple foreign languages for teaching is especially nec essary for talent cultivation.This paper analyzed the current situation and shortcomings of foreign language teaching in Zigong Ra dio&TV University and put forward the concept and thinking of implementing multiple foreign language teaching in combination with the idea of serving the construction of“The Belt and Road”and the reality of Zigong Radio&TV University.展开更多
The China Foreign Exchange Trade System, the only national foreign exchange trading institution in China, officially opened for business at 15 Shanghai Bund, Shanghai, on April 18 this year. It marked the start of the...The China Foreign Exchange Trade System, the only national foreign exchange trading institution in China, officially opened for business at 15 Shanghai Bund, Shanghai, on April 18 this year. It marked the start of the first market prices for foreign exchange in the country. The opening of the system means that the relationship between展开更多
Open Space Ratio(OSR)是《1961纽约市区划决议案》中居住环境控制的核心概念与重要指标,自1990年代始国内的许多学者引进这个概念,并倡导作为规划控制指标,因此也催生了中文术语"空地率"。本文系统梳理国内有关"OSR&qu...Open Space Ratio(OSR)是《1961纽约市区划决议案》中居住环境控制的核心概念与重要指标,自1990年代始国内的许多学者引进这个概念,并倡导作为规划控制指标,因此也催生了中文术语"空地率"。本文系统梳理国内有关"OSR"和"空地率"研究的30余年学术文献,基于《1961纽约市区划决议案》的法律文本,对OSR的译名及其概念作出全面的阐释,澄清了OSR指标的意义、应用目的及其范围,辨析了OSR与中文术语"空地率"本质性的概念差异,建议将OSR指标引入控制性详细规划的居住环境控制,调整和完善我国控制性详细规划的指标控制体系。展开更多
Rock mass damage at great depths near underground openings is often of a zonal character.However,the classical elastoplastic theory fails to explain sufficiently all properties of zonal failure structures.A new non-Eu...Rock mass damage at great depths near underground openings is often of a zonal character.However,the classical elastoplastic theory fails to explain sufficiently all properties of zonal failure structures.A new non-Euclidean mathematical model for highly-stressed rock mass was developed based on the principles of mechanics of defected material and non-equilibrium thermodynamics.Methods were developed to determine model parameters that provide satisfactory correspondence between the experimental findings concerning faulted zonal structures near openings at great depths and mathematical calculations.The mechanism of this phenomenon was discovered which consisted in a periodical character of stresses in the surrounding rock mass and development of tensile macrocracks at zones of maximal tangential stresses.Main relationships between the cracking zone width and rock mass strength were established.展开更多
Confluences play a major role in the dynamics of networks of natural and man-made open channels, and field measurements on river confluences reveal that discordance in bed elevation is common.Studies of schematized co...Confluences play a major role in the dynamics of networks of natural and man-made open channels, and field measurements on river confluences reveal that discordance in bed elevation is common.Studies of schematized confluences with a step at the interface between the tributary and the main channel bed reveal that bed elevation discordance is an important additional control for the confluence hydrodynamics.This study aimed to improve understanding of the influence of bed elevation discordance on the flow patterns and head losses in a right-angled confluence of an open channel with rectangular cross-sections.A large eddy simulation (LES)-based numerical model was set up and validated with experiments by others.Four configurations with different bed discordance ratios were investigated.The results confirm that, with increasing bed elevation discordance, the tributary streamlines at the confluence interface deviate less from the geometrical confluence angle, the extent of the recirculation zone (RZ) gets smaller, the ratio of the water depth upstream to that downstream of the confluence decreases, and the water level depression reduces.The bed elevation discordance also leads to the development of a large-scale structure in the lee of the step.Despite the appearance of the large-scale structure, the reduced extent of the RZ and associated changes in flow deflection/contraction reduce total head losses experienced by the main channel with an increase of the bed discordance ratio.It turns out that bed elevation discordance converts the lateral momentum from the tributary to streamwise momentum in the main channel more efficiently.展开更多
AIM:To demonstrate prognostic factors for poor visual outcome in patients with post-traumatic endophthalmitis(PTE)following open globe injury.METHODS:A retrospective study was conducted on 66 patients(66 eyes)with PTE...AIM:To demonstrate prognostic factors for poor visual outcome in patients with post-traumatic endophthalmitis(PTE)following open globe injury.METHODS:A retrospective study was conducted on 66 patients(66 eyes)with PTE following open globe injury from 2005 to 2015.Potential factors accounting for good and poor visual outcome were statistically analyzed by Chisquare test and Logistic regression model.RESULTS:In 66 cases,39 cases(59%)had a poor visual outcome.Univariate and multivariate Logistic regression analysis identified retained intraocular foreign body(IOFB)as the only factor significantly associated with poor visual outcome[adjusted odds ratio,4.62;95%confidence interval(1.04-20.53);P=0.04].The most common causative agents were gram-positive organisms(83%),of which Bacillus cereus(33%),was the most common pathogen.All cases received intravitreal antibiotic injections.Oral ciprofloxacin was the most used systemic antibiotic(33%).Pars plana vitrectomy was performed in 83%(55/66)of cases.At 6 mo follow-up,mean BCVA was 1.74±0.72 log MAR units.CONCLUSION:In patients with PTE following open globe injury,the only predictor of poor visual outcome is the presence of IOFB.Bacillus cereus is the most isolated microorganism.展开更多
AIM: To elucidate the question of whether the ocular trauma score(OTS) and the zones of injury could be used as a predictive model of traumatic and post traumatic retinal detachment(RD) in patients with open globe inj...AIM: To elucidate the question of whether the ocular trauma score(OTS) and the zones of injury could be used as a predictive model of traumatic and post traumatic retinal detachment(RD) in patients with open globe injury(OGI).METHODS: A retrospective observational chart analysis of OGI patients was performed. The collected variables consisted of age, date, gender, time of injury, time until repair, mechanism of injury, zone of injury, injury associated vitreous hemorrhage, trauma associated RD, post traumatic RD, aphakia at injury, periocular trauma and OTS in cases of OGI. RESULTS: Totally 102 patients with traumatic OGI with a minimum of 12 mo follow-up and a median age at of 48.6 y(range: 3-104 y) were identified. Final best corrected visual acuity(BCVA) was independent from the time of repair, yet a statistically significant difference was present between the final BCVA and the zone of injury. Severe trauma presenting with an OTS score Ⅰ(P<0.0001) or Ⅱ(P<0.0001) revealed a significantly worse BCVA at last follow up when compared to the cohort with an OTS score >Ⅲ. OGI associated RD was observed in 36/102 patients(35.3%), whereas post traumatic RD(defined as RD following 14 d after OGI) occurred in 37 patients(36.3%). OGI associated RD did not correlate with the OTS and the zone of injury(P=0.193), yet post traumatic RD correlated significantly with zone Ⅲ injuries(P=0.013). CONCLUSION: The study shows a significant association between lower OTS score and zone Ⅲ injury with lower final BCVA and a higher number of surgeries, but only zone Ⅲ could be significantly associated with a higher rate of RD.展开更多
AIM: To study the criterion-reference of endotamponades in pars plana vitrectomy for metallic intraocular foreign body (MIOFD) associated with endophthalmitis. METHODS:Thirty-six patients of MIOFD with endophthalmitis...AIM: To study the criterion-reference of endotamponades in pars plana vitrectomy for metallic intraocular foreign body (MIOFD) associated with endophthalmitis. METHODS:Thirty-six patients of MIOFD with endophthalmitis accorded with Exclusion and inclusion criteria were retrospectively analyzed. A detailed analysis of the patients' natural factors, preoperative examinations, intraoperative endotamponades choice, postoperative complications and therapeutic effects was performed. RESULTS: BSS was used in 4 eyes without obvious retinal damage. There was no postoperative complication and their visual acuity (VA) was improved. Sixteen eyes that had mild retinal damage filled with C3F8 gas. The postoperative VA improved in 10 eyes (62.5%), 4 eyes (25.0%) remained unchanged and 2 eyes (12.5%) decreased. Only 2 cases occurred postoperative retinal detachment in gas group. Another 16 eyes with serious retinal damage were treated with silicone oil. Postoperative VA of 9 eyes (56.3%) improved, 3 eyes (18.8%) remained unchanged and 4 eyes (25.0%) decreased. The silicone oil group had higher incidence of postoperative complications, but the incidence of secondary treatment had no significant different between silicone oil and gas group. CONCLUSION: An appropriate choice of endotamponades in vitrectomy surgery for MIOFB with endophthalmitis is important for prognosis.展开更多
文摘Historically,geopolitical risk(GPR)has posed significant challenges to international economic,social,and political frameworks.This study investigated how internal GPR in the selected five Southeast Asian countries(Indonesia,South Korea,Malaysia,the Philippines,and Thailand)influences foreign direct investment(FDI)during 1996-2019.The stationarity of the data was assessed using the Augmented Dickey-Fuller(ADF)unit root test,which shows that the data became stationary after the first difference.The Kao,Pedroni,and Westerlund cointegration tests were employed to examine long-term cointegration among the selected variables(FDI,GPR index(GPRI),gross domestic product(GDP),inflation,interest rate,and trade openness(TOP)).The results indicated that these variables have a long-term cointegration.Consequently,regression analysis using the Pooled Ordinary Least Squares(OLS)regression,fixed effect,random effect,Arellano-Bond dynamic panel-data estimation,and system generalized moment method(GMM)revealed that GPRI and TOP negatively impacted FDI in the selected five Southeast Asian countries.At the same time,GDP,inflation,and interest rate positively influenced FDI in these countries.Because FDI is crucial to shaping a country’s macroeconomic structure,this study recommends that governments and central banks of the selected five Southeast Asian countries should implement policies and strategies to encourage foreign investments.
基金The National Natural Science Foundationof China (No.70372057)
文摘By a linear Cournot model, the factors associated with the integration of two firms are discussed in terms of their effects on the private surplus and the social welfare in economies with varying extent of openness. Meanwhile, the trade policy of the host government is taken into account. It is concluded that the more open the economy and the more intense the competition, the less profitable the integration; the most important determinant to the changes of the domestic social welfare is the industry strength of the host country. The host authority can enhance the domestic social welfare in two ways: to adjust the trade policy and to only approve the socially desirable cross-border mergers and acquisitions.
文摘The energy demand in Australia is increasing with the industrialization and rapid economic growth.This study analyzed the relationships among the economic growth,Foreign Direct Investment(FDI),trade openness,urbanization,and energy usage in Australia based on the data from World Development Indicators(WDI)from 1972 to 2021.The results indicates that there is a cointegration among economic growth,FDI,trade openness,urbanization,and energy usage,which was traced through the autoregressivedistributed lag(ARDL).The Zivot-Andrews unit root test reveals that energy usage,economic growth,FDI,urbanization,and trade openness show significant structural breaks in 1993,1996,1982,2008,and 1994,respectively.The ARDL model shows that economic growth has a positive and significant effect on energy usage in the long-run(0.814)and short-run(0.809).Moreover,the results also show that FDI(0.028)and trade openness(0.043)have positive impacts on energy usage in the long-run.However,urbanization shows a negative and significant influence on energy usage in the long-run(–0.965).Then,the research demonstrates a unidirectional causation between energy usage and trade openness,with energy usage significantly causing trade openness.The current study endorses energy consumption policies and investment strategies for a paradigm shifting from a reliance on fossil fuels as the primary energy source to renewable energy sources.These findings have profound implications for sustainable energy usage.
文摘"Policy of People’s Bank of China is veryenlightened. Conditions for foreign capitalentering into are very relaxed. After the FordCompany received the soliciting opiniondraft of Measures, we quickly translated itinto English and sent it by fax to theHeadquarters of Ford Auto Finance Co. forresearch. We are very excided for theenlightenment of the people’s Bank ofChina." Mr. Xu Guozheng, Vice Presidentof Ford Auto(China) Co. Ltd. Answeredquestions from the reporter with pleasure onOctober 10, 2002.
文摘On December 11,2020,State Councilor and Minister of Foreign Affairs Wang Yi attended the opening of the Symposium on the Intermational Situation and China's Foreign Relations in 2020 in Beijing,and delivered a keynote speech entitled“Serving the Country and Contributing to the World:China's Diplomacy in a Time of Unprecedented Global Changes and a Once-in-a-Century Pandemic.”
文摘Hunan is situated on themiddle reaches of theYangtze River.As most partof the province lies on thesouth of Dongting Lake,it iscalled Hunan.Also it is called"Xiang"for the vast XiangRiver that runs through itfrom south to north.Furthermore,it is known asthe Hibiscus Kingdom dueto the abundant hibiscusthere,described in theancient poem"Autumn WindBlows through the HibiscusKingdom".
文摘The Eighth Five-year Plan period wasa fast growing period for Jiangsu’sforeign economic and technical co-operation. Guided by the policy of seizingopportunities, expanding the opening driveand promoting development, all the staff atthe provincial foreign economic front madeevery effort to fulfill the goal of the sus-tained, fast and healthy development in for-
文摘This study aims to find out the effect of the model of ODL (Open and Distance Learning) for teaching Indonesian for foreign and whether this model of ODL implements socio-cultural and psychological approaches. The students' learning of Indonesian for foreign is in so many aspects that it must be considered from both psychological aspects of students' language and cultural aspects. The research was carried out on foreign students' studying Indonesian language. The research method used action research. ODL model developed this concerning how the students are anxious in foreign language learning and language use in accordance with Indonesian culture. The model of ODL for teaching foreign Indonesian uses the Internet facilities such as email, Skype, VolP, Google Talk, circulating document with comments, chat, forum, CD, audio-video, stream media player, and e-learning system. Based on the results of this study which is that students study the model ODL for teaching Indonesian through socio-cultural approach and psychological aspects and students of Indonesian for foreign improve their ability to use the Indonesian language, students are able to converse fluently in Indonesian in accordance with Indonesian culture
文摘It has been our consistent policy to expand the opening policy, while using foreign capital reasonably and effectively. Our experience of economic development since China’s economic reform and opening to the outside world 20 years ago has shown that implementing the opening policy, participation in the international division of labour and exchange, the use of both domestic and international markets and resources, and the introduction of a foreign
文摘Under the strategic background of“The Belt and Road”,the talents with comprehensive application ability and scientif ic and technological creativity are needed for the international society in the future.At present,Zigong Radio&TV University is in a period of transformation and development.Therefore,the introduction of multiple foreign languages for teaching is especially nec essary for talent cultivation.This paper analyzed the current situation and shortcomings of foreign language teaching in Zigong Ra dio&TV University and put forward the concept and thinking of implementing multiple foreign language teaching in combination with the idea of serving the construction of“The Belt and Road”and the reality of Zigong Radio&TV University.
文摘The China Foreign Exchange Trade System, the only national foreign exchange trading institution in China, officially opened for business at 15 Shanghai Bund, Shanghai, on April 18 this year. It marked the start of the first market prices for foreign exchange in the country. The opening of the system means that the relationship between
文摘Open Space Ratio(OSR)是《1961纽约市区划决议案》中居住环境控制的核心概念与重要指标,自1990年代始国内的许多学者引进这个概念,并倡导作为规划控制指标,因此也催生了中文术语"空地率"。本文系统梳理国内有关"OSR"和"空地率"研究的30余年学术文献,基于《1961纽约市区划决议案》的法律文本,对OSR的译名及其概念作出全面的阐释,澄清了OSR指标的意义、应用目的及其范围,辨析了OSR与中文术语"空地率"本质性的概念差异,建议将OSR指标引入控制性详细规划的居住环境控制,调整和完善我国控制性详细规划的指标控制体系。
基金supported by grants No.13-06-0113m_a from“Scientific Fund”of Far Eastern Federal UniversityNo.5.2535.2014K from the Ministry of Education and Science of the Russian Federation
文摘Rock mass damage at great depths near underground openings is often of a zonal character.However,the classical elastoplastic theory fails to explain sufficiently all properties of zonal failure structures.A new non-Euclidean mathematical model for highly-stressed rock mass was developed based on the principles of mechanics of defected material and non-equilibrium thermodynamics.Methods were developed to determine model parameters that provide satisfactory correspondence between the experimental findings concerning faulted zonal structures near openings at great depths and mathematical calculations.The mechanism of this phenomenon was discovered which consisted in a periodical character of stresses in the surrounding rock mass and development of tensile macrocracks at zones of maximal tangential stresses.Main relationships between the cracking zone width and rock mass strength were established.
文摘Confluences play a major role in the dynamics of networks of natural and man-made open channels, and field measurements on river confluences reveal that discordance in bed elevation is common.Studies of schematized confluences with a step at the interface between the tributary and the main channel bed reveal that bed elevation discordance is an important additional control for the confluence hydrodynamics.This study aimed to improve understanding of the influence of bed elevation discordance on the flow patterns and head losses in a right-angled confluence of an open channel with rectangular cross-sections.A large eddy simulation (LES)-based numerical model was set up and validated with experiments by others.Four configurations with different bed discordance ratios were investigated.The results confirm that, with increasing bed elevation discordance, the tributary streamlines at the confluence interface deviate less from the geometrical confluence angle, the extent of the recirculation zone (RZ) gets smaller, the ratio of the water depth upstream to that downstream of the confluence decreases, and the water level depression reduces.The bed elevation discordance also leads to the development of a large-scale structure in the lee of the step.Despite the appearance of the large-scale structure, the reduced extent of the RZ and associated changes in flow deflection/contraction reduce total head losses experienced by the main channel with an increase of the bed discordance ratio.It turns out that bed elevation discordance converts the lateral momentum from the tributary to streamwise momentum in the main channel more efficiently.
文摘AIM:To demonstrate prognostic factors for poor visual outcome in patients with post-traumatic endophthalmitis(PTE)following open globe injury.METHODS:A retrospective study was conducted on 66 patients(66 eyes)with PTE following open globe injury from 2005 to 2015.Potential factors accounting for good and poor visual outcome were statistically analyzed by Chisquare test and Logistic regression model.RESULTS:In 66 cases,39 cases(59%)had a poor visual outcome.Univariate and multivariate Logistic regression analysis identified retained intraocular foreign body(IOFB)as the only factor significantly associated with poor visual outcome[adjusted odds ratio,4.62;95%confidence interval(1.04-20.53);P=0.04].The most common causative agents were gram-positive organisms(83%),of which Bacillus cereus(33%),was the most common pathogen.All cases received intravitreal antibiotic injections.Oral ciprofloxacin was the most used systemic antibiotic(33%).Pars plana vitrectomy was performed in 83%(55/66)of cases.At 6 mo follow-up,mean BCVA was 1.74±0.72 log MAR units.CONCLUSION:In patients with PTE following open globe injury,the only predictor of poor visual outcome is the presence of IOFB.Bacillus cereus is the most isolated microorganism.
文摘AIM: To elucidate the question of whether the ocular trauma score(OTS) and the zones of injury could be used as a predictive model of traumatic and post traumatic retinal detachment(RD) in patients with open globe injury(OGI).METHODS: A retrospective observational chart analysis of OGI patients was performed. The collected variables consisted of age, date, gender, time of injury, time until repair, mechanism of injury, zone of injury, injury associated vitreous hemorrhage, trauma associated RD, post traumatic RD, aphakia at injury, periocular trauma and OTS in cases of OGI. RESULTS: Totally 102 patients with traumatic OGI with a minimum of 12 mo follow-up and a median age at of 48.6 y(range: 3-104 y) were identified. Final best corrected visual acuity(BCVA) was independent from the time of repair, yet a statistically significant difference was present between the final BCVA and the zone of injury. Severe trauma presenting with an OTS score Ⅰ(P<0.0001) or Ⅱ(P<0.0001) revealed a significantly worse BCVA at last follow up when compared to the cohort with an OTS score >Ⅲ. OGI associated RD was observed in 36/102 patients(35.3%), whereas post traumatic RD(defined as RD following 14 d after OGI) occurred in 37 patients(36.3%). OGI associated RD did not correlate with the OTS and the zone of injury(P=0.193), yet post traumatic RD correlated significantly with zone Ⅲ injuries(P=0.013). CONCLUSION: The study shows a significant association between lower OTS score and zone Ⅲ injury with lower final BCVA and a higher number of surgeries, but only zone Ⅲ could be significantly associated with a higher rate of RD.
文摘AIM: To study the criterion-reference of endotamponades in pars plana vitrectomy for metallic intraocular foreign body (MIOFD) associated with endophthalmitis. METHODS:Thirty-six patients of MIOFD with endophthalmitis accorded with Exclusion and inclusion criteria were retrospectively analyzed. A detailed analysis of the patients' natural factors, preoperative examinations, intraoperative endotamponades choice, postoperative complications and therapeutic effects was performed. RESULTS: BSS was used in 4 eyes without obvious retinal damage. There was no postoperative complication and their visual acuity (VA) was improved. Sixteen eyes that had mild retinal damage filled with C3F8 gas. The postoperative VA improved in 10 eyes (62.5%), 4 eyes (25.0%) remained unchanged and 2 eyes (12.5%) decreased. Only 2 cases occurred postoperative retinal detachment in gas group. Another 16 eyes with serious retinal damage were treated with silicone oil. Postoperative VA of 9 eyes (56.3%) improved, 3 eyes (18.8%) remained unchanged and 4 eyes (25.0%) decreased. The silicone oil group had higher incidence of postoperative complications, but the incidence of secondary treatment had no significant different between silicone oil and gas group. CONCLUSION: An appropriate choice of endotamponades in vitrectomy surgery for MIOFB with endophthalmitis is important for prognosis.