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Automated detection of lunar craters based on object-oriented approach

Chinese science Bulletin 2008年第23期53卷 3699-3704页

作者： YuE ZongYu1,2,3.4, LIu JianZhong3.& Wu GanGuo2 1 Institute of Remote sensing Application, Chinese Academy of sciences, Beijing 100101, China 2 China university of Geosciences (Beijing), Beijing 100083. China 3.National Astronomical Observatories of Chinese Academy of sciences, Beijing 100012, China 4 department of geological sciences,{3., san antonio, tx 78249, u.s.a Institute of Remote sensing Application Chinese Academy of Sciences Beijing China China university of Geosciences (Beijing) Beijing China National Astronomical Observatories of Chinese Academy of sciences Beijing China

The object-oriented approach is a powerful method in making classification. With the segmentation of images to objects, many features can be calculated based on the objects so that the targets can be distinguished. However, this method has not been applied to lunar study. In this paper we attempt to apply this method to detecting lunar craters with promising results. Craters are the most obvious features on the moon and they are important for lunar geologic study. One of the important questions in lunar research is to estimate lunar surface ages by examination of crater density per unit area. Hence, proper detection of lunar craters is necessary. Manual crater identification is inefficient, and a more efficient and effective method is needed. This paper describes an object-oriented method to detect lunar craters using lunar reflectance images. In the method, many objects were first segmented from the image based on size, shape, color, and the weights to every layer. Then the feature of "contrast to neighbor objects" was selected to identify craters from the lunar image. In the next step, by merging the adjacent objects belonging to the same class, almost every crater can be taken as an independent object except several very big craters in the study area. To remove the crater rays diagnosed as craters, the feature of "length/width" was further used with suitable parameters to finish recognizing craters. Finally, the result was exported to ArcGIs for manual modification to those big craters and the number of craters was acquired.

关键词：自动化检测月球环形山地貌

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Interfaces In Advanced Materials——A Key Role for Active Device Applications

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四川大学学报（自然科学版） 2005年第S1期42卷 53-页

作者： Chen C L (department of Physics and Astronomy,university of texas at{3.,san antonio,tx 78249,u.s.a)

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Ferroelectric Thin Films for Room Temperature Tunable Microwave Devices--The Current status and Future

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四川大学学报（自然科学版） 2005年第S1期42卷 514-页

作者： Chen C L (department of Physics and Astronomy, university of texas at{3.,{3., tx 78249, u.s.a.)

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A review of methane leakage from abandoned oil and gas wells:A case study in Lubbock,texas,within the Permian Basin

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Energy Geoscience 2024年第3期5卷 1-12页

作者： stanley u.Opara Chinedu J.Okere Bob L.Herd department of Petroleum Engineering Texas Tech UniversityTXUSA

In the pursuit of global net zero carbon emissions and climate change mitigation,ongoing research into sustainable energy sources and emission control is *** review examines methane leakage from abandoned oil and gas(AOG)wells,focusing particularly on Lubbock,a geographic area situated within the larger region known as the Permian Basin in West texas,united *** objective is to assess the extent and environmental implications of methane leakage from these *** analysis integrates pertinent literature,governmental and industry data,and prior Lubbock *** affecting methane leakage,including well integrity,geological characteristics,and human activities,are *** research estimates 1781 drilled wells in Lubbock,forming a foundation for targeted assessments and monitoring due to historical drilling *** hierarchy of well statuses in Lubbock highlights the prevalence of“active oil wells,”trailed by“plugged and abandoned oil wells”and“inactive oil wells.”Methane leakage potential aligns with these well types,underscoring the importance of strategic monitoring and *** analysis notes a zenith in“drilled and completed”wells during *** our study's case analysis and literature review reiterate the critical significance of assessing and mitigating methane emissions from AOG wells,it's important to clarify that the research does not directly provide methane leakage ***,it contextualizes the issue's magnitude and emphasizes the well type and status analysis's role in targeted mitigation *** summary,our research deepens our understanding of methane leakage,aiding informed decision-making and policy formulation for environmental *** clarifying well type implications and historical drilling patterns,we aim to contribute to effective strategies in mitigating methane emissions from AOG wells.

关键词： Net zero carbon emissions Climate change mitigation Methane emission control Abandoned oil and gas(AOG)well Permian Basin

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从多元概化理论看高考综合能力测试的改进

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心理学报 2004年第2期36卷 195-200页

作者：杨志明张雷马世晔湖南师范大学心理学系 PMG The Harcourt Assessment Inc.San AntonioTX78259USA 香港中文大学教育心理学系中华人民共和国教育部考试中心信息科研处

通过多元概化理论的研究发现 ,高考综合能力测试 (2 0 0 1,广东 )的总体信度达到了可以接受的水平(0 .784 )。但测验中各部分对总方差的贡献程度与预定的赋分比例有较大差距。其中 ,地理和政治的贡献度偏低 ,化学和历史的贡献度偏高。... 详细信息

通过多元概化理论的研究发现 ,高考综合能力测试 (2 0 0 1,广东 )的总体信度达到了可以接受的水平(0 .784 )。但测验中各部分对总方差的贡献程度与预定的赋分比例有较大差距。其中 ,地理和政治的贡献度偏低 ,化学和历史的贡献度偏高。这表明有 (历史和化学 )偏科特点的考生得到了较高的综合分数。又经决策 (D)研究发现 ,增加地理部分的题量会反常地降低测验的总体信度 ,这说明有不少高分考生答错或主动放弃了地理科题目。因此 ,如何有效控制各部分的实际贡献程度、避免负面导向效应是当前高考综合能力测试亟待解决的问题。

关键词：测量信度多元概化理论高考综合能力测试

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二价金属铁离子（Fe^（＋＋））在体内和体外对阴道滴虫蛋白表达的调控

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寄生虫与医学昆虫学报 1994年第1期1卷 8-16页

作者：陈安平汪明北京农业大学兽医学院

阴道滴虫是世界范围的性传染的阴道滴虫病的病原体。病原微生物在机体内生存，不仅要逃避宿主的免疫反应，而且还要能获得其生存所必需的生长因子。金属铁离子（Ｆｅ^（＋＋））是关系到阴道滴虫能否正常生长的必需因子之一。先前的工... 详细信息

阴道滴虫是世界范围的性传染的阴道滴虫病的病原体。病原微生物在机体内生存，不仅要逃避宿主的免疫反应，而且还要能获得其生存所必需的生长因子。金属铁离子（Ｆｅ^（＋＋））是关系到阴道滴虫能否正常生长的必需因子之一。先前的工作已证明，在离体条件下，高铁离子环境促进滴虫吸附到Ｈｅｌａ细胞上。本文主要研究在体内和体外条件下，滴虫是如何在蛋白质表达水平上对环境中铁离子浓度高低作出反应。这里观察到至少３个铁诱导蛋白和两个铁抑制蛋白。其中分子量为１３６ｋＤ的蛋白是以前报道的乳铁蛋白受体。也研究了环境ｐＨ对于这些铁调节蛋白的影响。结果表明：在所研究的ｐＨ５．０～６．４范围内，虽然较低的ｐＨ环境促进滴虫细胞的增殖，但并不明显地影响铁离子对铁调节蛋白的调控。通过使用阴道滴虫病患者的血清进行放射免疫沉淀实验，间接证明铁离子不仅在体外，而且可能也在体内调节这些铁调节蛋白的表达。环境铁离子在体内调节滴虫蛋白表达这一事实在国内外鲜有报道。尚需做进一步研究才能全面理解铁离子调控滴虫蛋白的分子机制和水平。

关键词：阴道滴虫铁调节蛋白金属铁离子

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Thermal Product of Type-E Fast Response Temperature sensors

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Journal of Thermal science 2010年第4期19卷 364-371页

作者： H.A.Mohammed H.salleh M.Z.Yusoff antonio Campo department of Mechanical Engineering College of EngineeringUniversiti Tenaga NasionalKm 7Jalan Kajang-Puchong43009 KajangSelangorMalaysia department of Mechanical Engineering The University of Texas at San AntonioSan AntonioTX 78249USA

This paper provides practical data for thermal product values of different scratched temperature sensors that can be used for accurate transient heat transfer measurements under hypersonic flow *** effect of using different scratch techniqu.s.abrasive papers and scalpel blades)to form the sensor's junction is *** was observed that the thermal product of a particular sensor depends on the Mach number,junction scratch technique, junction location and enthalpy *** was demonstrated that using different scratched technique would produce different thermal product values.

关键词： thermal product fast response temperature sensor hypersonic flow.

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Loss expression of active fragile sites genes associated with the severity of breast epithelial abnormalities

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Chinese Medical Journal 2008年第20期121卷 1969-1974页

作者： WANG Tian-tian Eldo E Frezza MA Rong Hu san-yuan LIu Chong-zhong ZHANG Guang-yong Mitchell s. Wachtel Lu Xiao-mei FENG Jin-bo Lu Cui-xia department of General surgery Qilu Hospital Shandong University Jinan Shandong 250012 China texas Tech university Health sciences Center Lubbock TX 79430 USA department of Gynecology Jinan Central Hospital Jinan Shandong 250013 China Key Laboratory of Cardiovascular Remodeling and Function Research Chinese Ministry of Education and Chinese Ministry of Public Health Jinan Shandong 250012 China Division of statistics Shandong Center for Disease Control and Prevention Jinan Shandong 250012 China

Background WWOX and FHIT are two candidate tumor suppressor genes located in active fragile sites, the damage of which has been associated with the development of breast cancer. The association of the expression of these genes and the development of breast cancer has not been fully explored. We evaluated mRNA and protein expression of WWOX and FHIT in breast tissue with normal histological appearances, atypical ductal hyperplasia, ductal carcinoma in situ, and invasive cancer to see if a progressive decline in expression was present. Methods Reverse transcription-polymerase chain reaction and Western blotting were used to evaluate the specimens for mRNA and protein expression, including 28 specimens with normal tissue, 28 specimens with atypical ductal hyperplasia, 3. specimens with ductal carcinoma in situ, and 51 specimens with invasive ductal carcinoma. Results Compared with in situ and invasive cancer specimens, both normal and atypical hyperplasia specimens had greater rates of detectable mRNA （WWOX rate ratio=2.95, 95% CI 1.24-7.08; FHIT rate ratio=4.58, 95% CI 1.82-11.81） and Western blotting detectable protein （WWOX rate ratio=4.12, 95% CI 1.63.10.73. FHIT rate ratio=3.76, 95% CI 1.44-10.06）. For both proteins, differences between normal and atypical hyperplasia specimens and between in situ and invasive carcinoma specimens were explainable by chance （P 〉0.05 for each analysis）. Within each histological category, differences among fractions of specimens showed that FHIT and WWOX mRNA and protein expression were explainable by chance （P 〉0.05 for each analysis）. Conclusion Expression of FHIT and WWOX decreases along with breast tissue progress from a normal histological appearance to atypical ductal hyperplasia, in situ cancer, and the final invasive cancer.

关键词： breast neoplasms chromosome fragile sites tumor suppressor genes carcinogens

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Racial and Ethnic Differences in Orthorexia Nervosa symptomatology and Other Disordered Eating

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Open Journal of Psychiatry 2024年第4期14卷 287-299页

作者： Dilan H. Arreguin Kendria s. shields-Rhodes Melissa L. Harel Crystal D. Oberle department of Psychology Texas State University San Marcos TX USA

While some research has explored racial and ethnic differences in disordered eating, this study may be the first to examine these differences in orthorexia nervosa, involving obsessive-compulsive thoughts and behaviors concerning healthy eating, which negatively impact one’s life. Adult participants, recruited from college courses and social media, completed an online survey with the Orthorexia Nervosa Inventory (ONI) and the Eating Attitudes Test-26 (EAT-26). Regarding racial and ethnic background, 743.were White, 249 were Hispanic, 87 were Black, 61 were Asian or Pacific Islander, and 110 were biracial/multiracial. A MANCOVA revealed that the racial and ethnic groups did not differ on the ONI su.s.ales assessing orthorexic behaviors, impairments, and emotions, after accounting for gender, BMI, and EAT-26 total scores that were covariates. In contrast, a second MANCOVA did reveal group differences on the EAT-26 su.s.ales, after accounting for gender, BMI, and ONI total scores that were covariates. Black participants scored significantly lower than the other racial and ethnic groups on the su.s.ale assessing dieting behaviors characteristic of anorexia nervosa, and the su.s.ale assessing binge-eating and purging behaviors characteristic of bulimia nervosa. Further, Hispanic participants scored significantly lower than White participants on the latter su.s.ale. These findings suggest that while orthorexic symptomatology does not differ based on race and ethnicity, a Black race and Hispanic ethnicity may be protective factors against disordered eating, perhaps related either to cultural norms concerning body image or to the resiliency and social support among the Black and Hispanic communities.

关键词： Race Ethnicity Orthorexia Disordered Eating

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Effect of pipe characteristics in umbrella arch method on controlling tunneling-induced settlements in soft grounds

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Journal of Rock Mechanics and Geotechnical Engineering 2020年第5期12卷 984-1000页

作者： Ali Morovatdar Massoud Palassi Reza s.Ashtiani department of Civil Engineering The University of Texas at El PasoEl PasoTX79968USA College of Engineering Faculty of Civil EngineeringUniversity of TehranTehran14155-6619Iran

Recent developments in tunneling have stimulated design practitioners to more effectively utilize the underground ***,tunneling at shallow depth in soft grounds gives rise to concerns associated with tunnel *** arch method(uAM),as a pre-reinforcement approach of tunnels in complex geological conditions,is widely used to maintain the tunnel *** assessment of the impacts of the entire approach and forepoling pipe features on tunnel stability remains challenging due to the complex nature of the uAM *** study aimed to assess the effect of pipe design parameters on reinforcing the tunnels excavated in soft *** practical investigation considered the actual field conditions attributed to the tunneling procedure and uAM ***,the tunneling process was modeled and the tunnel excavation-induced settlements were *** post-processed results confirmed that deploying the uAM su.s.antially reduced the tunnel crown and ground surface settlements by 76%and 42%,*** of various design parameters of pipes underscored the significance of incorporating the optimum value for each individual parameter into design schemes to more effectively control the ***,contrasting the settlement reduction rates(sRRs)for pipe design variables showed that the tunnel stability is more sensitive to the changes in the values of diameter and length,compared to values of the installation angle and center-tocenter distance of the pipes.

关键词： Tunnel reinforcement umbrella arch method(uAM) urban tunneling Forepoling pipes Finite element analysis Numerical simulation

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