This study explores the key role of rivers in the westward expansion of the United States during the 19th century. In the early 1800s, President Jefferson envisioned a United States that extended from the Atlantic to ...This study explores the key role of rivers in the westward expansion of the United States during the 19th century. In the early 1800s, President Jefferson envisioned a United States that extended from the Atlantic to the Pacific Ocean. At the time, the entire United States territory was located between the Atlantic Ocean and the Mississippi River. Much of the land west of the Mississippi River was claimed by Spain, France, or Canada. In 1803, President Jefferson was able to purchase the Missouri River watershed from France via the Louisiana Purchase. This allowed the United States to extend its land claim west from the confluence of the Missouri and Mississippi Rivers to the head waters of the Missouri River at the continental divide in the Rocky Mountains. President Jefferson commissioned William Clark and Meriwether Lewis, in 1803, to explore, discover and describe the Missouri River watershed and find a water route to the Pacific Ocean. The Lewis and Clark Corps of Discovery trip found no such waterway link but did continue to explore the Pacific Northwest lands north and west of the continental divide. The only way that the Pacific Northwest could be claimed as part of the United States was for Americans to settle there before the Canadians did. Starting in the 1820s, many Americans traveled via the Oregon Trail to the Willamette Valley (Land of Flowing Milk and Honey) in Oregon. The primary objectives of this study are to document how the United States: 1) extended its land claims west from the Mississippi River to the North American continental drainage divide;2) established an American claim to the Pacific North West territory;and 3) fulfilled President Jefferson’s vision of a United States extending from the Atlantic to the Pacific Ocean.展开更多
Detailed topographic maps of drainage divides surrounding the Jefferson County, Montana, Boulder River drainage basin were analyzed to determine the nature of drainage systems that preceded today’s Boulder River drai...Detailed topographic maps of drainage divides surrounding the Jefferson County, Montana, Boulder River drainage basin were analyzed to determine the nature of drainage systems that preceded today’s Boulder River drainage system and how the Boulder River drainage system evolved from those earlier drainage systems. The Boulder River studied here drains in a north, east, and south direction to the Jefferson River, which at Three Forks, Montana joins the north-oriented Madison and Gallatin Rivers to form the north-oriented Missouri River. The North American east-west Continental Divide surrounds the Boulder River drainage basin western half and mountainous drainage divides with the Jefferson and Missouri Rivers surround the drainage basin’s eastern half. More than 25 deep mountain passes are notched into these drainage divides and provide evidence of the regional drainage system that preceded the present day Boulder River drainage system. Analysis of pass elevations and of orientations of valleys leading in opposite directions from those mountain passes shows that prior to Boulder River drainage system development immense volumes of south-oriented water moving in anastomosing complexes of diverging and converging channels flowed across the Boulder River drainage basin area and that the Boulder River drainage system evolved as deeper channels progressively captured flow from shallower channels. While not documented in detail crustal warping probably raised Boulder River drainage basin areas relative to adjacent valleys and basins as capture events took place. A water source was not determined, but may have been from a large North American continental ice sheet, although Boulder River drainage basin evolution probably occurred while mid Tertiary sediments were filling adjacent valleys and basins.展开更多
With the increased attention on community sustainability and resilience, different poles have developed voicing similarities and/or differences of the two concepts. This study quantifies adaptive capacity of Jefferson...With the increased attention on community sustainability and resilience, different poles have developed voicing similarities and/or differences of the two concepts. This study quantifies adaptive capacity of Jefferson County, Texas, one of the coastal communities at the Gulf of Mexico having some of the worse adverse effects. Review of existing methods is presented. Analyses were conducted for the last ten years: from 2005 to 2014. Interestingly, statistical analyses showed that the County’s socio-economic profile or indicators have not changed throughout the ten years, but the environmental, institutional, and infrastructure indicators have. Focusing on one location magnifies the adaptive capacity of Jefferson County, the temporal aspect of both perspectives, and the relevance of existing methods to this community with its peculiarities. Future assessments need to be based on primary data collected through participatory engagement of all stakeholders. This calls for attempts to quantify adaptive capacity using the comparatively more challenging deductive reasoning, which would allow for incorporation of more risks and thus higher readiness.展开更多
In this paper we discuss the reasons for our work towards establishing a new collaboration between Jefferson Lab （JLab） and the Institute of High Energy Physics （IHEP） in Beijing. We seek to combine experimentalis...In this paper we discuss the reasons for our work towards establishing a new collaboration between Jefferson Lab （JLab） and the Institute of High Energy Physics （IHEP） in Beijing. We seek to combine experimentalists and theorists into a dedicated group focused on better understanding the current and future data from JLab and from the Beijing Electron Positron Collider （BEPC）. Recent JLab results on the extraction of single- and double-polarization observables in both the lπ- and 2π-channel show their high sensitivity to small production amplitudes and therefore their importance for the extraction of resonance parameters. The Beijing Electron Spectrometer （BES） at the BEPC has collected high statistics data on J/ψ production. Its decay into baryon-antibaryon channels offers a unique and complementary way of probing nucleon resonances. The CEBAF Large Acceptance Spectrometer, CLAS, has access to N＊ form factors at high Q2 which is advantageous for the study of dynamical properties of nucleon resonances, while the low-background BES results will be able to provide guidance for the search for less-dominant excited states at JLab. Moreover, with the recently approved experimental proposal Nucleon Resonance Studies with CLAS12 and the high-quality data streaming from BES-Ⅲand CLAS, the time has come for forging a new Trans-Pacific collaboration of theorists and experimentalists on NSTAR physics.展开更多
Aim: To compare empathic levels among dental students of five Dental Faculties in Chile. Material and Methods: Empathic orientation of dental students was measured using the Jefferson Scale of Physician Empathy, the S...Aim: To compare empathic levels among dental students of five Dental Faculties in Chile. Material and Methods: Empathic orientation of dental students was measured using the Jefferson Scale of Physician Empathy, the Spanish version for students (S version), validated in Chile and culturally adapted to dental students. The data were compared using analysis of variance trifactorial (model III) and by a discriminant analysis. Results: It was found that differences exist between universities empathic orientation, courses, and gender. Conclusions: The results showed a great variability of empathetic guidance values on the factors studied. Discriminant test confirm the similarity and differences found among faculties from the data matrix provided by the scale used. It is not possible in this investigation to explain the variability found.展开更多
Background: The incumbent of medical professional is expected to be socially responsible and emotionally empathetic along with good communication propensity to fasten the doctor-patient relationship. Whilst doctor’s ...Background: The incumbent of medical professional is expected to be socially responsible and emotionally empathetic along with good communication propensity to fasten the doctor-patient relationship. Whilst doctor’s proficiency to recognize a patient’s perspectives, and convey such an understanding back to the patient;in our case, the empathy and compassion level of promising medical professional is unknown in Nepal. Thus, this study aimed to analyze the compassion and empathy score of final year’s undergraduate students of four medical colleges in Nepal. Methods: Self-reported empathy measures were obtained using the Jefferson Scale of Physician-Student version. Results: The degree of empathy for the participants was 97.28 (SD = 14.44) with a median score of 96.00 and a range of 44 (min) to 133 (max). There was a significant difference on scores of the Jefferson scale of physician empathy between NMC Nepalgunj and BPKIHS (p = 0.00) and between NMC Nepalgunj and Manipal Pokhara (p = 0.00), as well as between UCMS and Manipal Pokhara (p = 0.044). These results were significant at the 95% confidence interval. Conclusions: The mean empathy score for the Nepali students is lower than medical students from developed countries but almost similar to medical students from other Asian medical students. The female Nepali medical students scored slightly higher than their male counterparts. Thus colleges have to develop academic programs to improve empathy and compassion among medical students through providing adequate time to consult with patient and faculties.展开更多
Objective: The aim of this study is to check whether there are differences in the distribution of empathy levels in dental students from nine faculties of dentistry Colombia, Panama, Costa Rica and Dominican Republic....Objective: The aim of this study is to check whether there are differences in the distribution of empathy levels in dental students from nine faculties of dentistry Colombia, Panama, Costa Rica and Dominican Republic. Methods: The levels of empathy and matrices of empathy construct matrices are estimated dental students by using the Jefferson Scale of Physician Empathy, the Spanish version for students (S version) culturally validated in Colombia, Panama, Costa Rica and Dominican Republic measured by arbitrator criteria. Cronbach α is estimated. Data of empathic orientation of the studied factors between faculties are analyzed and compared by ANOVA and Duncan test and matrices of empathy construct using discriminant analysis. Results: We find that there are differences in levels of empathy between universities, courses, gender and interaction between the Dental Faculty (University) and Course. The comparison between matrices shows unexplained variances and differences observed between the levels of empathy in student populations. Conclusions: Variability in empathy is observed in the studied factors and among student populations. The variability is an empirical finding, but is not possible in this work, to explain why.展开更多
A easy proof of the theorem of Jefferson apportionment geometric region is given.mereover,we give a geometric explanation to show that Jefferson’s method may avoid Alabama Paxadox.Finally,some geometric properties re...A easy proof of the theorem of Jefferson apportionment geometric region is given.mereover,we give a geometric explanation to show that Jefferson’s method may avoid Alabama Paxadox.Finally,some geometric properties related to Jefferson’s method are investigated.展开更多
The chromosomal localization of 45S ribosomal RNA genes in Ambystoma jeffersonianum was determined by fluorescence in situ hybridization with 18S rDNA fragment as a probe (FISH-rDNA). Our results revealed the presence...The chromosomal localization of 45S ribosomal RNA genes in Ambystoma jeffersonianum was determined by fluorescence in situ hybridization with 18S rDNA fragment as a probe (FISH-rDNA). Our results revealed the presence of rDNA polymorphism among A.jeffersonianum populations in terms of number,location and FISH signal intensity on the chromosomes. Nine rDNA cytotypes were found in ten geographically isolated populations and most of them contained derivative rDNA sites. Our preliminary study provides strong indication of karyotypic diversification of A.jeffersonianum that is demonstrated by intraspecific variation of 45S rDNA cytotypes. rDNA cytotype polymorphism has been described in many other caudate amphibians. We predict that habitat isolation,low dispersal ability and decline of effective population size could facilitate the fixation and accumulation of variable rDNA cytotypes during their chromosome evolution.展开更多
文摘This study explores the key role of rivers in the westward expansion of the United States during the 19th century. In the early 1800s, President Jefferson envisioned a United States that extended from the Atlantic to the Pacific Ocean. At the time, the entire United States territory was located between the Atlantic Ocean and the Mississippi River. Much of the land west of the Mississippi River was claimed by Spain, France, or Canada. In 1803, President Jefferson was able to purchase the Missouri River watershed from France via the Louisiana Purchase. This allowed the United States to extend its land claim west from the confluence of the Missouri and Mississippi Rivers to the head waters of the Missouri River at the continental divide in the Rocky Mountains. President Jefferson commissioned William Clark and Meriwether Lewis, in 1803, to explore, discover and describe the Missouri River watershed and find a water route to the Pacific Ocean. The Lewis and Clark Corps of Discovery trip found no such waterway link but did continue to explore the Pacific Northwest lands north and west of the continental divide. The only way that the Pacific Northwest could be claimed as part of the United States was for Americans to settle there before the Canadians did. Starting in the 1820s, many Americans traveled via the Oregon Trail to the Willamette Valley (Land of Flowing Milk and Honey) in Oregon. The primary objectives of this study are to document how the United States: 1) extended its land claims west from the Mississippi River to the North American continental drainage divide;2) established an American claim to the Pacific North West territory;and 3) fulfilled President Jefferson’s vision of a United States extending from the Atlantic to the Pacific Ocean.
文摘Detailed topographic maps of drainage divides surrounding the Jefferson County, Montana, Boulder River drainage basin were analyzed to determine the nature of drainage systems that preceded today’s Boulder River drainage system and how the Boulder River drainage system evolved from those earlier drainage systems. The Boulder River studied here drains in a north, east, and south direction to the Jefferson River, which at Three Forks, Montana joins the north-oriented Madison and Gallatin Rivers to form the north-oriented Missouri River. The North American east-west Continental Divide surrounds the Boulder River drainage basin western half and mountainous drainage divides with the Jefferson and Missouri Rivers surround the drainage basin’s eastern half. More than 25 deep mountain passes are notched into these drainage divides and provide evidence of the regional drainage system that preceded the present day Boulder River drainage system. Analysis of pass elevations and of orientations of valleys leading in opposite directions from those mountain passes shows that prior to Boulder River drainage system development immense volumes of south-oriented water moving in anastomosing complexes of diverging and converging channels flowed across the Boulder River drainage basin area and that the Boulder River drainage system evolved as deeper channels progressively captured flow from shallower channels. While not documented in detail crustal warping probably raised Boulder River drainage basin areas relative to adjacent valleys and basins as capture events took place. A water source was not determined, but may have been from a large North American continental ice sheet, although Boulder River drainage basin evolution probably occurred while mid Tertiary sediments were filling adjacent valleys and basins.
文摘With the increased attention on community sustainability and resilience, different poles have developed voicing similarities and/or differences of the two concepts. This study quantifies adaptive capacity of Jefferson County, Texas, one of the coastal communities at the Gulf of Mexico having some of the worse adverse effects. Review of existing methods is presented. Analyses were conducted for the last ten years: from 2005 to 2014. Interestingly, statistical analyses showed that the County’s socio-economic profile or indicators have not changed throughout the ten years, but the environmental, institutional, and infrastructure indicators have. Focusing on one location magnifies the adaptive capacity of Jefferson County, the temporal aspect of both perspectives, and the relevance of existing methods to this community with its peculiarities. Future assessments need to be based on primary data collected through participatory engagement of all stakeholders. This calls for attempts to quantify adaptive capacity using the comparatively more challenging deductive reasoning, which would allow for incorporation of more risks and thus higher readiness.
文摘In this paper we discuss the reasons for our work towards establishing a new collaboration between Jefferson Lab （JLab） and the Institute of High Energy Physics （IHEP） in Beijing. We seek to combine experimentalists and theorists into a dedicated group focused on better understanding the current and future data from JLab and from the Beijing Electron Positron Collider （BEPC）. Recent JLab results on the extraction of single- and double-polarization observables in both the lπ- and 2π-channel show their high sensitivity to small production amplitudes and therefore their importance for the extraction of resonance parameters. The Beijing Electron Spectrometer （BES） at the BEPC has collected high statistics data on J/ψ production. Its decay into baryon-antibaryon channels offers a unique and complementary way of probing nucleon resonances. The CEBAF Large Acceptance Spectrometer, CLAS, has access to N＊ form factors at high Q2 which is advantageous for the study of dynamical properties of nucleon resonances, while the low-background BES results will be able to provide guidance for the search for less-dominant excited states at JLab. Moreover, with the recently approved experimental proposal Nucleon Resonance Studies with CLAS12 and the high-quality data streaming from BES-Ⅲand CLAS, the time has come for forging a new Trans-Pacific collaboration of theorists and experimentalists on NSTAR physics.
文摘Aim: To compare empathic levels among dental students of five Dental Faculties in Chile. Material and Methods: Empathic orientation of dental students was measured using the Jefferson Scale of Physician Empathy, the Spanish version for students (S version), validated in Chile and culturally adapted to dental students. The data were compared using analysis of variance trifactorial (model III) and by a discriminant analysis. Results: It was found that differences exist between universities empathic orientation, courses, and gender. Conclusions: The results showed a great variability of empathetic guidance values on the factors studied. Discriminant test confirm the similarity and differences found among faculties from the data matrix provided by the scale used. It is not possible in this investigation to explain the variability found.
文摘Background: The incumbent of medical professional is expected to be socially responsible and emotionally empathetic along with good communication propensity to fasten the doctor-patient relationship. Whilst doctor’s proficiency to recognize a patient’s perspectives, and convey such an understanding back to the patient;in our case, the empathy and compassion level of promising medical professional is unknown in Nepal. Thus, this study aimed to analyze the compassion and empathy score of final year’s undergraduate students of four medical colleges in Nepal. Methods: Self-reported empathy measures were obtained using the Jefferson Scale of Physician-Student version. Results: The degree of empathy for the participants was 97.28 (SD = 14.44) with a median score of 96.00 and a range of 44 (min) to 133 (max). There was a significant difference on scores of the Jefferson scale of physician empathy between NMC Nepalgunj and BPKIHS (p = 0.00) and between NMC Nepalgunj and Manipal Pokhara (p = 0.00), as well as between UCMS and Manipal Pokhara (p = 0.044). These results were significant at the 95% confidence interval. Conclusions: The mean empathy score for the Nepali students is lower than medical students from developed countries but almost similar to medical students from other Asian medical students. The female Nepali medical students scored slightly higher than their male counterparts. Thus colleges have to develop academic programs to improve empathy and compassion among medical students through providing adequate time to consult with patient and faculties.
文摘Objective: The aim of this study is to check whether there are differences in the distribution of empathy levels in dental students from nine faculties of dentistry Colombia, Panama, Costa Rica and Dominican Republic. Methods: The levels of empathy and matrices of empathy construct matrices are estimated dental students by using the Jefferson Scale of Physician Empathy, the Spanish version for students (S version) culturally validated in Colombia, Panama, Costa Rica and Dominican Republic measured by arbitrator criteria. Cronbach α is estimated. Data of empathic orientation of the studied factors between faculties are analyzed and compared by ANOVA and Duncan test and matrices of empathy construct using discriminant analysis. Results: We find that there are differences in levels of empathy between universities, courses, gender and interaction between the Dental Faculty (University) and Course. The comparison between matrices shows unexplained variances and differences observed between the levels of empathy in student populations. Conclusions: Variability in empathy is observed in the studied factors and among student populations. The variability is an empirical finding, but is not possible in this work, to explain why.
文摘A easy proof of the theorem of Jefferson apportionment geometric region is given.mereover,we give a geometric explanation to show that Jefferson’s method may avoid Alabama Paxadox.Finally,some geometric properties related to Jefferson’s method are investigated.
文摘The chromosomal localization of 45S ribosomal RNA genes in Ambystoma jeffersonianum was determined by fluorescence in situ hybridization with 18S rDNA fragment as a probe (FISH-rDNA). Our results revealed the presence of rDNA polymorphism among A.jeffersonianum populations in terms of number,location and FISH signal intensity on the chromosomes. Nine rDNA cytotypes were found in ten geographically isolated populations and most of them contained derivative rDNA sites. Our preliminary study provides strong indication of karyotypic diversification of A.jeffersonianum that is demonstrated by intraspecific variation of 45S rDNA cytotypes. rDNA cytotype polymorphism has been described in many other caudate amphibians. We predict that habitat isolation,low dispersal ability and decline of effective population size could facilitate the fixation and accumulation of variable rDNA cytotypes during their chromosome evolution.
