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旅游大讲堂（第210期）——博士生论坛： Staging a comeback? The influencing mechanism of tourist crowding perception on adaptive behavior（图）
扎根理论 结构方程模型 游客拥挤感知
2024/2/29
2023年11月3日下午，南开大学旅游与服务学院“旅游大讲堂——博士生论坛”如期举行。博士生程云就“Staging a comeback?The influencing mechanism of tourist crowding perception on adaptive behavior”为主题进行了汇报交流。本次论坛在学院111报告厅举行，学院青年教师和硕博研究生等共计90余人参加了此次讲座...
Root system development in naturally regenerated Douglas-fir saplings as influenced by canopy closure and crowding
natural regeneration competition shading physical tree stability
2015/9/15
Documented information on the growth dynamics and related silvicultural manipulation of naturally
regenerat ed Douglas-fir beneath a canopy shelter is scarce. We hypothesized that long regeneration ...
JILA study finds crowding has big effects on biomolecules
JILA study finds crowding has big effects biomolecules
2014/6/12
Crowding has notoriously negative effects at large size scales, blamed for everything from human disease and depression to community resource shortages. But relatively little is known about the influe...
Opinions of American and Swedish Orthodontists about the Role of Erupting Third Molars as a Cause of Dental Crowding
Third molars Crowding Anterior forces
2010/3/9
Objective: To compare the opinions of Swedish orthodontists and American orthodontists regarding the association between third molar eruption and dental crowding.
Materials and Methods: A survey was ...
Head Posture and Lower Arch Dental Crowding
Occlusal contacts Retention Bonded retainers Hawley
2010/3/5
Objective: To test the hypothesis that there is no difference in the number of occlusal contacts in centric occlusion in patients treated with bonded and removable retention procedures and a control g...
基于动态聚集距离的多目标粒子群优化算法及其应用（Multi-objective Particle Swarm Optimization Algorithm Based on Dynamic Crowding Distance and Its Application）
粒子群算法 多目标优化 改进的快速排序法 动态聚集距离 Pareto集
2010/4/1
为了增加Pareto集的多样性，提高多目标优化的全局寻优能力，提出了一种基于动态聚集距离的多目标粒子群算法(DCD-MOPSO)。该算法利用改进的快速排序方法来减少计算量，采用动态变化的惯性权重和加速因子以增强算法的全局寻优能力，并基于动态聚集距离对外部集进行维护以增加Pareto集的多样性。通过典型测试函数的仿真实验和应用实例对DCD-MOPSO算法性能进行了分析，并与多目标优化算法MOPSO和...
Ingestion of bonito extract ameliorates peripheral blood flow in mice loaded from over crowding stress
peripheral blood crowding stress
2009/5/8
Bonito extract (BE) has been shown to improve various fatigue-related symptoms. The possibility that the improvement of blood flow contributes to the improvement of fatigue-related symptoms has been...
The Relationship Between Eruption, Calcification, And Crowding Of Certain Mandibular Teeth
Eruption Calcification Certain Mandibular Teeth
2009/3/14
The Relationship Between Eruption, Calcification, And Crowding Of Certain Mandibular Teeth.
The Anterior Migration of Dentitions and Anterior Crowding：A Review
Anterior Migration Dentitions Anterior Crowding
2009/3/12
The Anterior Migration of Dentitions and Anterior Crowding: A Review.
Late Lower Arch Crowding in Relation to Primary Crowding
Late Lower Arch Crowding Primary Crowding
2009/3/4
A preliminary study of changes in crowding during the five years following eruption of all permanent teeth anterior to the third molar, showing a tendency toward increased crowding with some reciproca...
The Effect of Lower Second Molar Extraction on Late Lower Arch Crowding
Lower Second Molar Extraction Late Lower Arch Crowding
2009/3/2
A preliminary study, finding distal movement of buccal teeth and reduced anterior crowding following lower second molar extraction. Third molar occlusion is not evaluated.
Statistical evaluations finding a tendency for early molar crowding to decrease, with forward molar movement and an increase in anterior crowding.
A study of the relationship between dental crowding and facial morphology in 51 individuals studied over the first five years of the permanent dentition, finding some relationships but no strong or ...
Mandibular Anterior Crowding and Periodontal Disease
CROWDING GINGIVITIS MALOCCLUSION PERIODONTAL DISEASE PLAQUE
2009/2/26
A short-term longitudinal study of the role of mandibular anterior crowding in inflammatory periodontal diseases. Crowded dentitions show more periodontal involvement, and the improvement after scalin...
Incisor Crowding in Untreated Persons 15–50 Years of Age：United States，1988–1994
Incisor Irregularity NHANES III Adults Epidemiology
2008/12/19
The purpose of this study was to (1) describe the prevalence of mandibular incisor irregularity (II) among untreated adults in the United States and (2) evaluate the factors explaining individual ...