Fenzhen Su | Chinese Academy of Sciences (original) (raw)
Papers by Fenzhen Su
2011 19th International Conference on Geoinformatics, 2011
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Geo-information Science, 2009
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IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004
... According to different geo-events, or different themes in a same geo-event, the neighborhood ... more ... According to different geo-events, or different themes in a same geo-event, the neighborhood may be defined as different shape, director with distance or resolution. 2.2. ... 3.1Research area and the data The study area (fig.2) lies in Dasha area, the south of the Yellow Sea. ...
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IGARSS 2000. IEEE 2000 International Geoscience and Remote Sensing Symposium. Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment. Proceedings (Cat. No.00CH37120), 2000
Temperature, as one of the main factors, is thought to play a dominant role in determining the sp... more Temperature, as one of the main factors, is thought to play a dominant role in determining the spatial and temporal distribution of fish centers and fishing grounds. For many species of marine fish, research has provided much information about their spawning, feeding habitats and migrations; however, such information is always empirical. In order to investigate the relationship between sea surface
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Geo-information Science, 2009
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Chinese Geographical Science, 2015
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Geo-information Science, 2010
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Chinese Journal of Oceanology and Limnology, 2010
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2011 19th International Conference on Geoinformatics, 2011
This contribution presents a service-oriented application that addresses the issues of marine inf... more This contribution presents a service-oriented application that addresses the issues of marine information accessibility and enables scientists to implement ocean models online. The application serves four primary functions: 1) Integrate in-situ and satellite observation data and model results. 2) Produce value-added products by combing multiple data sources. 3) Supply various methods to access and visualize the data. 4) Provide on-demand
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2010 IEEE International Geoscience and Remote Sensing Symposium, 2010
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Packaging Technology and Science, 2014
ABSTRACT Many young females have difficulty opening jars. Although previous studies have attempte... more ABSTRACT Many young females have difficulty opening jars. Although previous studies have attempted to clarify the body posture effect during such a task, the experiments therein focused on a single digit or actions with unnatural finger positions and were further restricted to upper extremity postures. A further study is required to investigate the fingers’ coordination, as well as each subject's natural and self-selected upper extremity posture and finger grasp location when opening a jar. This study focused on the forces and coordination of the right hand fingers during a jar opening movement under both vertical and free-way opening postures. A jar simulator was set up to record the forces applied by finger groups (the thumb, the index–middle finger group, and the ring–little finger group) of the right hand. A self-selected finger position and free-arm posture of each subject were allowed. Results show that the force vectors of the finger groups were all in the counterclockwise direction for both postures. The total force and overall torque of the right hand decreased in the vertical opening posture. The thumb produced greater tangential and resultant forces in the vertical opening posture. Despite normal forces being 1.82–3.54 times the tangential forces for both postures, no difference was found for the normal force to tangential force ratio for each finger group between the two opening postures. The index–middle finger group had similar torque contributions for both postures. The torque contribution of the thumb increased (26% and 21% for vertical and free-way posture, respectively), while the ring–little finger group torque contribution decreased (35% and 42% for vertical and free-way posture, respectively) in the vertical opening posture. As such, the free-way opening posture is the better strategy for young females to open a jar. Copyright © 2013 John Wiley & Sons, Ltd.
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Ocean & Coastal Management, 2014
ABSTRACT Time is an indispensable means in accessibility expression and also an important index o... more ABSTRACT Time is an indispensable means in accessibility expression and also an important index of the search and rescue (SAR) ability to a country. In this paper, a method for forecasting the location and probability of patrol vessel which is responsible for SAR on the sea is presented; and a temporal accessibility model for assessing the SAR ability of countries around South China Sea in Nansha is structured. In this study, 19 islands and cays in Nansha Islands are selected as rescue targets; eight ports in four countries around South China Sea are selected as SAR bases; patrol vessels belong to coast guard or maritime agency of countries around South China Sea whose displacement is over 1000 tons are selected as principal searchers and rescuers. Based on the density of ships passing the area and the distance from ports of each homeland, the distributions of patrol vessel which belongs to four countries around South China Sea are obtained. The SAR time of China, Vietnam, Malaysia and Philippines in Nansha were calculated based on the proposed method. The results indicated that due to the number of big patrol vessels, China Coast Guard is able to get to Nansha in minimum time, only half an hour for SAR; Vietnam gets second, one and a half hours; Malaysia gets third, 4.6 h; Philippines costs almost 7 h at the bottom of the list, because of the distance and the number of vessels. Taking consideration of the scattered distribution of islands, rocky coral reefs, bad weather and complex marine conditions, it is a very difficult job for SAR vessels. So it is necessary to set up several sub centers and shelters on appropriate islands or atolls in Nansha. And more importantly, how to enhance connection and coordination among countries around South China Sea, build harmonious and smooth SAR mechanisms or channels for cooperation, and improve the ability for solving emergency accidents in Nansha and even the whole South China Sea.
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Ocean & Coastal Management, 2012
ABSTRACT The exploitative intensity evaluation of bays is meaningful for the ecological conservat... more ABSTRACT The exploitative intensity evaluation of bays is meaningful for the ecological conservation, future utilization and integrated management of bays in China; especially for the regions where the economic development is depending on the coastal exploitation. Nevertheless, the complexity of morphology and structure of bays make the study a little bit difficult. A physical impulse-based approach to evaluate the exploitative intensity of bay was put forward in this paper. First of all, the differentiation in morphological, spatial location and structure of bays were analyzed, and the bay was separated into geographical elements of axes and areas accordingly; secondly, the exploitation and utilization process was abstracted and assumed using physical principles; Thirdly, physical Impulse-based Model of exploitative intensity evaluation was build according to the Law of Momentum which can convert the process variable to state variable. Daya Bay of Guangdong province in China was taken as a case study, four key time indicating the construction of large coastal engineering near Daya Bay coast were selected, namely year 1986, 1991, 2001 and 2004. The exploitative intensities of each spatial element of Daya Bay during 1986–1991, 1991–2001, and 2001–2004 were calculated and analyzed. The results show that the exploitative intensity of intertidal flat in Daya Bay during the study time spans is highest. The potential applications, current limitations, and future challenges of the approach were discussed.
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Journal of Ocean University of China, 2008
Analysis of ocean fronts’ uncertainties indicates that they result from indiscernibility of their... more Analysis of ocean fronts’ uncertainties indicates that they result from indiscernibility of their spatial position and fuzziness of their intensity. In view of this, a flow hierarchy for uncertainty representation of ocean fronts is proposed on the basis of fuzzy-rough set theory. Firstly, raster scanning and blurring are carried out on an ocean front, and the upper and lower approximate sets, the indiscernible relation in fuzzy-rough theories and related operators in fuzzy set theories are adopted to represent its uncertainties, then they are classified into three sets: with members one hundred percent belonging to the ocean front, belonging to the ocean front’s edge and definitely not belonging to the ocean front. Finally, the approximate precision and roughness degree are utilized to evaluate the ocean front’s degree of uncertainties and the precision of the representation. It has been proven that the method is not only capable of representing ocean fronts’ uncertainties, but also provides a new theory and method for uncertainty representation of other oceanic phenomena.
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Gait & Posture, 2000
The purpose of this study was to employ a computerized motion analysis system to identify the eff... more The purpose of this study was to employ a computerized motion analysis system to identify the effect of ankle arthrodesis on the three-dimensional kinematic behavior of the rear and fore foot during level walking. A three-segment rigid body model was used to describe the motion of the foot and ankle. The results demonstrated that sagittal plane motion of the hindfoot was significantly decreased in the foot of patients having had ankle arthrodesis compared to normal subjects. The kinematic data indicated a generalized stiffness of the hindfoot on the involved foot in the sagittal plane. Sagittal plane movement in the forefoot and transverse plane movements in the hindfoot and forefoot increased in patients compared to controls.
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Clinical Biomechanics, 2001
Elbow joint loading was evaluated during pushup exercises at various forearm rotations. Subjects ... more Elbow joint loading was evaluated during pushup exercises at various forearm rotations. Subjects were asked to perform pushup in various forearm rotations: neutral, 90 degrees internal rotation, and 90 degrees external rotation. Training with pushup exercise is good for the muscles and joints of the upper extremities. However, excessive shear forces on the elbow might lead to injuries to either normal trainees or to handicapped people, especially for those who rely on elbow prosthesis. The kinematics and kinetics of the elbow joint were investigated under various forearm rotations. The loading biomechanics of the elbow joint differed with various forearm rotations. It was noted that greater posterior and varus forces of the elbow are encountered with internal rotation of the hand position and, consequently, full forearm pronation. Pushup with hands in internally rotated position should be prevented so as to avoid excessive shear forces or moments. Knowledge of elbow kinematics and kinetics may be helpful in preventing injuries by reducing the elbow shear force with changes of forearm rotation.
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Ecological Modelling, 2004
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2011 19th International Conference on Geoinformatics, 2011
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Geo-information Science, 2009
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IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004
... According to different geo-events, or different themes in a same geo-event, the neighborhood ... more ... According to different geo-events, or different themes in a same geo-event, the neighborhood may be defined as different shape, director with distance or resolution. 2.2. ... 3.1Research area and the data The study area (fig.2) lies in Dasha area, the south of the Yellow Sea. ...
Bookmarks Related papers MentionsView impact
IGARSS 2000. IEEE 2000 International Geoscience and Remote Sensing Symposium. Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment. Proceedings (Cat. No.00CH37120), 2000
Temperature, as one of the main factors, is thought to play a dominant role in determining the sp... more Temperature, as one of the main factors, is thought to play a dominant role in determining the spatial and temporal distribution of fish centers and fishing grounds. For many species of marine fish, research has provided much information about their spawning, feeding habitats and migrations; however, such information is always empirical. In order to investigate the relationship between sea surface
Bookmarks Related papers MentionsView impact
Geo-information Science, 2009
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Chinese Geographical Science, 2015
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Geo-information Science, 2010
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Chinese Journal of Oceanology and Limnology, 2010
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2011 19th International Conference on Geoinformatics, 2011
This contribution presents a service-oriented application that addresses the issues of marine inf... more This contribution presents a service-oriented application that addresses the issues of marine information accessibility and enables scientists to implement ocean models online. The application serves four primary functions: 1) Integrate in-situ and satellite observation data and model results. 2) Produce value-added products by combing multiple data sources. 3) Supply various methods to access and visualize the data. 4) Provide on-demand
Bookmarks Related papers MentionsView impact
2010 IEEE International Geoscience and Remote Sensing Symposium, 2010
Bookmarks Related papers MentionsView impact
Packaging Technology and Science, 2014
ABSTRACT Many young females have difficulty opening jars. Although previous studies have attempte... more ABSTRACT Many young females have difficulty opening jars. Although previous studies have attempted to clarify the body posture effect during such a task, the experiments therein focused on a single digit or actions with unnatural finger positions and were further restricted to upper extremity postures. A further study is required to investigate the fingers’ coordination, as well as each subject's natural and self-selected upper extremity posture and finger grasp location when opening a jar. This study focused on the forces and coordination of the right hand fingers during a jar opening movement under both vertical and free-way opening postures. A jar simulator was set up to record the forces applied by finger groups (the thumb, the index–middle finger group, and the ring–little finger group) of the right hand. A self-selected finger position and free-arm posture of each subject were allowed. Results show that the force vectors of the finger groups were all in the counterclockwise direction for both postures. The total force and overall torque of the right hand decreased in the vertical opening posture. The thumb produced greater tangential and resultant forces in the vertical opening posture. Despite normal forces being 1.82–3.54 times the tangential forces for both postures, no difference was found for the normal force to tangential force ratio for each finger group between the two opening postures. The index–middle finger group had similar torque contributions for both postures. The torque contribution of the thumb increased (26% and 21% for vertical and free-way posture, respectively), while the ring–little finger group torque contribution decreased (35% and 42% for vertical and free-way posture, respectively) in the vertical opening posture. As such, the free-way opening posture is the better strategy for young females to open a jar. Copyright © 2013 John Wiley & Sons, Ltd.
Bookmarks Related papers MentionsView impact
Ocean & Coastal Management, 2014
ABSTRACT Time is an indispensable means in accessibility expression and also an important index o... more ABSTRACT Time is an indispensable means in accessibility expression and also an important index of the search and rescue (SAR) ability to a country. In this paper, a method for forecasting the location and probability of patrol vessel which is responsible for SAR on the sea is presented; and a temporal accessibility model for assessing the SAR ability of countries around South China Sea in Nansha is structured. In this study, 19 islands and cays in Nansha Islands are selected as rescue targets; eight ports in four countries around South China Sea are selected as SAR bases; patrol vessels belong to coast guard or maritime agency of countries around South China Sea whose displacement is over 1000 tons are selected as principal searchers and rescuers. Based on the density of ships passing the area and the distance from ports of each homeland, the distributions of patrol vessel which belongs to four countries around South China Sea are obtained. The SAR time of China, Vietnam, Malaysia and Philippines in Nansha were calculated based on the proposed method. The results indicated that due to the number of big patrol vessels, China Coast Guard is able to get to Nansha in minimum time, only half an hour for SAR; Vietnam gets second, one and a half hours; Malaysia gets third, 4.6 h; Philippines costs almost 7 h at the bottom of the list, because of the distance and the number of vessels. Taking consideration of the scattered distribution of islands, rocky coral reefs, bad weather and complex marine conditions, it is a very difficult job for SAR vessels. So it is necessary to set up several sub centers and shelters on appropriate islands or atolls in Nansha. And more importantly, how to enhance connection and coordination among countries around South China Sea, build harmonious and smooth SAR mechanisms or channels for cooperation, and improve the ability for solving emergency accidents in Nansha and even the whole South China Sea.
Bookmarks Related papers MentionsView impact
Ocean & Coastal Management, 2012
ABSTRACT The exploitative intensity evaluation of bays is meaningful for the ecological conservat... more ABSTRACT The exploitative intensity evaluation of bays is meaningful for the ecological conservation, future utilization and integrated management of bays in China; especially for the regions where the economic development is depending on the coastal exploitation. Nevertheless, the complexity of morphology and structure of bays make the study a little bit difficult. A physical impulse-based approach to evaluate the exploitative intensity of bay was put forward in this paper. First of all, the differentiation in morphological, spatial location and structure of bays were analyzed, and the bay was separated into geographical elements of axes and areas accordingly; secondly, the exploitation and utilization process was abstracted and assumed using physical principles; Thirdly, physical Impulse-based Model of exploitative intensity evaluation was build according to the Law of Momentum which can convert the process variable to state variable. Daya Bay of Guangdong province in China was taken as a case study, four key time indicating the construction of large coastal engineering near Daya Bay coast were selected, namely year 1986, 1991, 2001 and 2004. The exploitative intensities of each spatial element of Daya Bay during 1986–1991, 1991–2001, and 2001–2004 were calculated and analyzed. The results show that the exploitative intensity of intertidal flat in Daya Bay during the study time spans is highest. The potential applications, current limitations, and future challenges of the approach were discussed.
Bookmarks Related papers MentionsView impact
Journal of Ocean University of China, 2008
Analysis of ocean fronts’ uncertainties indicates that they result from indiscernibility of their... more Analysis of ocean fronts’ uncertainties indicates that they result from indiscernibility of their spatial position and fuzziness of their intensity. In view of this, a flow hierarchy for uncertainty representation of ocean fronts is proposed on the basis of fuzzy-rough set theory. Firstly, raster scanning and blurring are carried out on an ocean front, and the upper and lower approximate sets, the indiscernible relation in fuzzy-rough theories and related operators in fuzzy set theories are adopted to represent its uncertainties, then they are classified into three sets: with members one hundred percent belonging to the ocean front, belonging to the ocean front’s edge and definitely not belonging to the ocean front. Finally, the approximate precision and roughness degree are utilized to evaluate the ocean front’s degree of uncertainties and the precision of the representation. It has been proven that the method is not only capable of representing ocean fronts’ uncertainties, but also provides a new theory and method for uncertainty representation of other oceanic phenomena.
Bookmarks Related papers MentionsView impact
Gait & Posture, 2000
The purpose of this study was to employ a computerized motion analysis system to identify the eff... more The purpose of this study was to employ a computerized motion analysis system to identify the effect of ankle arthrodesis on the three-dimensional kinematic behavior of the rear and fore foot during level walking. A three-segment rigid body model was used to describe the motion of the foot and ankle. The results demonstrated that sagittal plane motion of the hindfoot was significantly decreased in the foot of patients having had ankle arthrodesis compared to normal subjects. The kinematic data indicated a generalized stiffness of the hindfoot on the involved foot in the sagittal plane. Sagittal plane movement in the forefoot and transverse plane movements in the hindfoot and forefoot increased in patients compared to controls.
Bookmarks Related papers MentionsView impact
Clinical Biomechanics, 2001
Elbow joint loading was evaluated during pushup exercises at various forearm rotations. Subjects ... more Elbow joint loading was evaluated during pushup exercises at various forearm rotations. Subjects were asked to perform pushup in various forearm rotations: neutral, 90 degrees internal rotation, and 90 degrees external rotation. Training with pushup exercise is good for the muscles and joints of the upper extremities. However, excessive shear forces on the elbow might lead to injuries to either normal trainees or to handicapped people, especially for those who rely on elbow prosthesis. The kinematics and kinetics of the elbow joint were investigated under various forearm rotations. The loading biomechanics of the elbow joint differed with various forearm rotations. It was noted that greater posterior and varus forces of the elbow are encountered with internal rotation of the hand position and, consequently, full forearm pronation. Pushup with hands in internally rotated position should be prevented so as to avoid excessive shear forces or moments. Knowledge of elbow kinematics and kinetics may be helpful in preventing injuries by reducing the elbow shear force with changes of forearm rotation.
Bookmarks Related papers MentionsView impact
Ecological Modelling, 2004
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