21 results on '"York AM"'
Search Results
2. The economic implications of self-care: the effect of lifestyle, functional adaptations, and medical self-care among a national sample of Medicare beneficiaries.
- Author
-
York AM
- Published
- 2001
3. An Exploratory Mixed-Methods Analysis of Factors Contributing to Students' Perceptions of Inclusion in Introductory STEM Courses.
- Author
-
York AM, Miller KG, Cahill MJ, Bernstein MA, Barber AM, Blomgren HE, and Frey RF
- Subjects
- Humans, Female, Male, Science education, Engineering education, Technology education, Mathematics education, Students, Perception, Curriculum
- Abstract
In this exploratory mixed-methods analysis of students' perceptions of inclusion in introductory STEM courses for STEM majors, we asked students to rate inclusion in their class and to provide an open-text explanation of their rating. Analyzing 1930 qualitative responses resulted in a codebook containing academic, identity, and nonspecific categories. The majority of responses (>80%) cited academic factors such as interactions between students and instructors or course elements and policies. Most academic responses aligned with evidence-based teaching practices fostering inclusion, describing a range of strategies and policies instructors can implement to increase students' perceptions of inclusion. A small number of student responses indicated that their perception of the required knowledge background for the course impacted course inclusivity. Few differences in frequency distributions were found between subgroups examined (gender, race and ethnicity, self-reported inclusion score, and discipline). Additionally, tracking a subset of students (135) across three courses revealed that most (80%) cited different factors influencing their perception of inclusion in each course. This suggests students' perceptions of inclusive practices are complex, and most students recognize multiple factors that influence their inclusion. Overall, our findings suggest instructors can significantly influence students' perceptions of inclusion by using multiple inclusive teaching strategies and course policies.
- Published
- 2024
- Full Text
- View/download PDF
4. Challenges and Opportunities in Academic Physiatry: An Environmental Scan.
- Author
-
Morgenroth DC, Knowlton T, Apkon S, Blauwet CA, Burns AS, Vallejos CC, Frontera W, Hearn SL, Jayabalan P, Lim PA, Moroz A, Perret D, Powell D, Puderbaugh M, Rivers WE, Sowa G, Verduzco-Gutierrez M, and Celnik PA
- Subjects
- Humans, United States, Education, Medical, Graduate, Delivery of Health Care, Physical and Rehabilitation Medicine, Medicine, Internship and Residency
- Abstract
Abstract: Environmental scans determine trends in an organization's or field's internal and external environment. The results can help shape goals, inform strategic decision making, and direct future actions. The Association of Academic Physiatrists convened a strategic planning group in 2020, composed of physiatrists representing a diversity of professional roles, career stages, race and ethnicity, gender, disability status, and geographic areas of practice. This strategic planning group performed an environmental scan to assess the forces, trends, challenges, and opportunities affecting both the Association of Academic Physiatrists and the entire field of academic physiatry (also known as physical medicine and rehabilitation, physical and rehabilitation medicine, and rehabilitation medicine). This article presents aspects of the environmental scan thought to be most pertinent to the field of academic physiatry organized within the following five themes: (1) Macro/Societal Trends, (2) Technological Advancements, (3) Diversity and Global Outreach, (4) Economy, and (5) Education/Learning Environment. The challenges and opportunities presented here can provide a roadmap for the field to thrive within the complex and evolving healthcare systems in the United States and globally., Competing Interests: Financial disclosure statements have been obtained, and no conflicts of interest have been reported by the authors or by any individuals in control of the content of this article., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
5. Drivers of prohibited natural resource collection in Chitwan National Park, Nepal.
- Author
-
Yabiku ST, Sullivan A, York AM, Zhao Q, Glick JE, Hall SJ, Ghimire DJ, and An L
- Abstract
Protected areas (PAs) are critical for achieving conservation, economic and development goals, but the factors that lead households to engage in prohibited resource collection in PAs are not well understood. We examine collection behaviours in community forests and the protected Chitwan National Park in Chitwan, Nepal. Our approach incorporates household and ecological data, including structured interviews, spatially explicit data on collection behaviours measured with computer tablets and a systematic field survey of invasive species. We pair our data with a framework that considers factors related to a household's demand for resources, barriers to prohibited resource collection, barriers to legal resource collection and alternatives to resource collection. The analysis identifies key drivers of prohibited collection, including sociodemographic variables and perceptions of an invasive plant ( Mikania micrantha ). The social-ecological systems approach reveals that household perceptions of the presence of M. micrantha were more strongly associated with resource collection decisions than the actual ecologically measured presence of the plant. We explore the policy implications of our findings for PAs and propose that employing a social-ecological systems approach leads to conservation policy and scientific insights that are not possible to achieve with social or ecological approaches alone., Competing Interests: Competing interests. None.
- Published
- 2022
- Full Text
- View/download PDF
6. Domestication reshaped the genetic basis of inbreeding depression in a maize landrace compared to its wild relative, teosinte.
- Author
-
Samayoa LF, Olukolu BA, Yang CJ, Chen Q, Stetter MG, York AM, Sanchez-Gonzalez JJ, Glaubitz JC, Bradbury PJ, Romay MC, Sun Q, Yang J, Ross-Ibarra J, Buckler ES, Doebley JF, and Holland JB
- Subjects
- Genes, Plant, Genetic Variation genetics, Phenotype, Plant Breeding, Plant Proteins genetics, Selection, Genetic genetics, Zea mays growth & development, Domestication, Inbreeding Depression genetics, Quantitative Trait Loci genetics, Zea mays genetics
- Abstract
Inbreeding depression is the reduction in fitness and vigor resulting from mating of close relatives observed in many plant and animal species. The extent to which the genetic load of mutations contributing to inbreeding depression is due to large-effect mutations versus variants with very small individual effects is unknown and may be affected by population history. We compared the effects of outcrossing and self-fertilization on 18 traits in a landrace population of maize, which underwent a population bottleneck during domestication, and a neighboring population of its wild relative teosinte. Inbreeding depression was greater in maize than teosinte for 15 of 18 traits, congruent with the greater segregating genetic load in the maize population that we predicted from sequence data. Parental breeding values were highly consistent between outcross and selfed offspring, indicating that additive effects determine most of the genetic value even in the presence of strong inbreeding depression. We developed a novel linkage scan to identify quantitative trait loci (QTL) representing large-effect rare variants carried by only a single parent, which were more important in teosinte than maize. Teosinte also carried more putative juvenile-acting lethal variants identified by segregation distortion. These results suggest a mixture of mostly polygenic, small-effect partially recessive effects in linkage disequilibrium underlying inbreeding depression, with an additional contribution from rare larger-effect variants that was more important in teosinte but depleted in maize following the domestication bottleneck. Purging associated with the maize domestication bottleneck may have selected against some large effect variants, but polygenic load is harder to purge and overall segregating mutational burden increased in maize compared to teosinte., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2021
- Full Text
- View/download PDF
7. A conserved genetic architecture among populations of the maize progenitor, teosinte, was radically altered by domestication.
- Author
-
Chen Q, Samayoa LF, Yang CJ, Olukolu BA, York AM, Sanchez-Gonzalez JJ, Xue W, Glaubitz JC, Bradbury PJ, Romay MC, Sun Q, Buckler ES, Holland JB, and Doebley JF
- Subjects
- Evolution, Molecular, Flowers, Gene-Environment Interaction, Reproduction, Zea mays physiology, Crops, Agricultural genetics, Genes, Plant, Zea mays genetics
- Abstract
Very little is known about how domestication was constrained by the quantitative genetic architecture of crop progenitors and how quantitative genetic architecture was altered by domestication. Yang et al. [C. J. Yang et al. , Proc. Natl. Acad. Sci. U.S.A. 116, 5643-5652 (2019)] drew multiple conclusions about how genetic architecture influenced and was altered by maize domestication based on one sympatric pair of teosinte and maize populations. To test the generality of their conclusions, we assayed the structure of genetic variances, genetic correlations among traits, strength of selection during domestication, and diversity in genetic architecture within teosinte and maize. Our results confirm that additive genetic variance is decreased, while dominance genetic variance is increased, during maize domestication. The genetic correlations are moderately conserved among traits between teosinte and maize, while the genetic variance-covariance matrices ( G -matrices) of teosinte and maize are quite different, primarily due to changes in the submatrix for reproductive traits. The inferred long-term selection intensities during domestication were weak, and the neutral hypothesis was rejected for reproductive and environmental response traits, suggesting that they were targets of selection during domestication. The G -matrix of teosinte imposed considerable constraint on selection during the early domestication process, and constraint increased further along the domestication trajectory. Finally, we assayed variation among populations and observed that genetic architecture is generally conserved among populations within teosinte and maize but is radically different between teosinte and maize. While selection drove changes in essentially all traits between teosinte and maize, selection explains little of the difference in domestication traits among populations within teosinte or maize., Competing Interests: The authors declare no competing interest., (Copyright © 2021 the Author(s). Published by PNAS.)
- Published
- 2021
- Full Text
- View/download PDF
8. The persistence of ancient settlements and urban sustainability.
- Author
-
Smith ME, Lobo J, Peeples MA, York AM, Stanley BW, Crawford KA, Gauthier N, and Huster AC
- Subjects
- Agriculture methods, Agriculture trends, Archaeology statistics & numerical data, Cities classification, Cities economics, Emigration and Immigration trends, Environment, Geography, Humans, Models, Theoretical, Population Dynamics trends, Socioeconomic Factors, Urban Population trends, Urban Renewal methods, Urban Renewal statistics & numerical data, Urban Renewal trends, Emigration and Immigration statistics & numerical data, Population Dynamics statistics & numerical data, Sustainable Growth, Urban Population statistics & numerical data, Urbanization
- Abstract
We propose a dedicated research effort on the determinants of settlement persistence in the ancient world, with the potential to significantly advance the scientific understanding of urban sustainability today. Settlements (cities, towns, villages) are locations with two key attributes: They frame human interactions and activities in space, and they are where people dwell or live. Sustainability, in this case, focuses on the capacity of structures and functions of a settlement system (geography, demography, institutions) to provide for continuity of safe habitation. The 7,000-y-old experience of urbanism, as revealed by archaeology and history, includes many instances of settlements and settlement systems enduring, adapting to, or generating environmental, institutional, and technological changes. The field of urban sustainability lacks a firm scientific foundation for understanding the long durée, relying instead on narratives of collapse informed by limited case studies. We argue for the development of a new interdisciplinary research effort to establish scientific understanding of settlement and settlement system persistence. Such an effort would build upon the many fields that study human settlements to develop new theories and databases from the extensive documentation of ancient and premodern urban systems. A scientific foundation will generate novel insights to advance the field of urban sustainability., Competing Interests: The authors declare no competing interest.
- Published
- 2021
- Full Text
- View/download PDF
9. TeoNAM: A Nested Association Mapping Population for Domestication and Agronomic Trait Analysis in Maize.
- Author
-
Chen Q, Yang CJ, York AM, Xue W, Daskalska LL, DeValk CA, Krueger KW, Lawton SB, Spiegelberg BG, Schnell JM, Neumeyer MA, Perry JS, Peterson AC, Kim B, Bergstrom L, Yang L, Barber IC, Tian F, and Doebley JF
- Subjects
- Edible Grain growth & development, Genes, Plant, Polymorphism, Single Nucleotide, Quantitative Trait, Heritable, Zea mays growth & development, Edible Grain genetics, Genome-Wide Association Study methods, Plant Breeding methods, Quantitative Trait Loci, Zea mays genetics
- Abstract
Recombinant inbred lines (RILs) are an important resource for mapping genes controlling complex traits in many species. While RIL populations have been developed for maize, a maize RIL population with multiple teosinte inbred lines as parents has been lacking. Here, we report a teosinte nested association mapping (TeoNAM) population, derived from crossing five teosinte inbreds to the maize inbred line W22. The resulting 1257 BC
1 S4 RILs were genotyped with 51,544 SNPs, providing a high-density genetic map with a length of 1540 cM. On average, each RIL is 15% homozygous teosinte and 8% heterozygous. We performed joint linkage mapping (JLM) and a genome-wide association study (GWAS) for 22 domestication and agronomic traits. A total of 255 QTL from JLM were identified, with many of these mapping near known genes or novel candidate genes. TeoNAM is a useful resource for QTL mapping for the discovery of novel allelic variation from teosinte. TeoNAM provides the first report that PROSTRATE GROWTH1 , a rice domestication gene, is also a QTL associated with tillering in teosinte and maize. We detected multiple QTL for flowering time and other traits for which the teosinte allele contributes to a more maize-like phenotype. Such QTL could be valuable in maize improvement., (Copyright © 2019 by the Genetics Society of America.)- Published
- 2019
- Full Text
- View/download PDF
10. The genetic architecture of teosinte catalyzed and constrained maize domestication.
- Author
-
Yang CJ, Samayoa LF, Bradbury PJ, Olukolu BA, Xue W, York AM, Tuholski MR, Wang W, Daskalska LL, Neumeyer MA, Sanchez-Gonzalez JJ, Romay MC, Glaubitz JC, Sun Q, Buckler ES, Holland JB, and Doebley JF
- Subjects
- Agriculture, Chromosome Mapping methods, Chromosomes, Plant physiology, Domestication, Edible Grain genetics, Evolution, Molecular, Genomics, Phenotype, Plant Proteins genetics, Quantitative Trait Loci, Selection, Genetic genetics, Genetics, Population methods, Zea mays genetics
- Abstract
The process of evolution under domestication has been studied using phylogenetics, population genetics-genomics, quantitative trait locus (QTL) mapping, gene expression assays, and archaeology. Here, we apply an evolutionary quantitative genetic approach to understand the constraints imposed by the genetic architecture of trait variation in teosinte, the wild ancestor of maize, and the consequences of domestication on genetic architecture. Using modern teosinte and maize landrace populations as proxies for the ancestor and domesticate, respectively, we estimated heritabilities, additive and dominance genetic variances, genetic-by-environment variances, genetic correlations, and genetic covariances for 18 domestication-related traits using realized genomic relationships estimated from genome-wide markers. We found a reduction in heritabilities across most traits, and the reduction is stronger in reproductive traits (size and numbers of grains and ears) than vegetative traits. We observed larger depletion in additive genetic variance than dominance genetic variance. Selection intensities during domestication were weak for all traits, with reproductive traits showing the highest values. For 17 of 18 traits, neutral divergence is rejected, suggesting they were targets of selection during domestication. Yield (total grain weight) per plant is the sole trait that selection does not appear to have improved in maize relative to teosinte. From a multivariate evolution perspective, we identified a strong, nonneutral divergence between teosinte and maize landrace genetic variance-covariance matrices (G-matrices). While the structure of G-matrix in teosinte posed considerable genetic constraint on early domestication, the maize landrace G-matrix indicates that the degree of constraint is more unfavorable for further evolution along the same trajectory., Competing Interests: The authors declare no conflict of interest., (Copyright © 2019 the Author(s). Published by PNAS.)
- Published
- 2019
- Full Text
- View/download PDF
11. A pilot investigation of an iOS-based app for toilet training children with autism spectrum disorder.
- Author
-
Mruzek DW, McAleavey S, Loring WA, Butter E, Smith T, McDonnell E, Levato L, Aponte C, Travis RP, Aiello RE, Taylor CM, Wilkins JW, Corbett-Dick P, Finkelstein DM, York AM, and Zanibbi K
- Subjects
- Child, Child, Preschool, Feasibility Studies, Female, Humans, Male, Pilot Projects, Reinforcement, Psychology, Wireless Technology, Autism Spectrum Disorder rehabilitation, Enuresis rehabilitation, Mobile Applications, Parents, Toilet Training
- Abstract
We developed an iOS-based app with a transmitter/disposable sensor and corresponding manualized intervention for children with autism spectrum disorder. The app signaled the onset of urination, time-stamped accidents for analysis, reminded parents to reinforce intervals of continence, provided a visual outlet for parents to communicate reinforcement, and afforded opportunity for timely feedback from clinicians. We compared this intervention with an intervention that uses standard behavioral treatment in a pilot randomized controlled trial of 33 children with autism spectrum disorder aged 3-6 years with urinary incontinence. Parents in both groups received initial training and four booster consultations over 3 months. Results support the feasibility of parent-mediated toilet training studies (e.g., 84% retention rate, 92% fidelity of parent-implemented intervention). Parents used the app and related technology with few difficulties or malfunctions. There were no statistically significant group differences for rate of urine accidents, toilet usage, or satisfaction at close of intervention or 3-month follow-up; however, the alarm group trended toward greater rate of skill acquisition with significantly less day-to-day intervention. Further development of alarm and related technology and future comparative studies with a greater number of participants are warranted.
- Published
- 2019
- Full Text
- View/download PDF
12. Stepwise cis-Regulatory Changes in ZCN8 Contribute to Maize Flowering-Time Adaptation.
- Author
-
Guo L, Wang X, Zhao M, Huang C, Li C, Li D, Yang CJ, York AM, Xue W, Xu G, Liang Y, Chen Q, Doebley JF, and Tian F
- Subjects
- Adaptation, Physiological, Domestication, Flowers physiology, MADS Domain Proteins genetics, MADS Domain Proteins metabolism, Phenotype, Plant Proteins metabolism, Quantitative Trait Loci, Zea mays genetics, Acclimatization genetics, Plant Proteins genetics, Polymorphism, Single Nucleotide, Zea mays physiology
- Abstract
Maize (Zea mays ssp. mays) was domesticated in southwestern Mexico ∼9,000 years ago from its wild ancestor, teosinte (Zea mays ssp. parviglumis) [1]. From its center of origin, maize experienced a rapid range expansion and spread over 90° of latitude in the Americas [2-4], which required a novel flowering-time adaptation. ZEA CENTRORADIALIS 8 (ZCN8) is the maize florigen gene and has a central role in mediating flowering [5, 6]. Here, we show that ZCN8 underlies a major quantitative trait locus (QTL) (qDTA8) for flowering time that was consistently detected in multiple maize-teosinte experimental populations. Through association analysis in a large diverse panel of maize inbred lines, we identified a SNP (SNP-1245) in the ZCN8 promoter that showed the strongest association with flowering time. SNP-1245 co-segregated with qDTA8 in maize-teosinte mapping populations. We demonstrate that SNP-1245 is associated with differential binding by the flowering activator ZmMADS1. SNP-1245 was a target of selection during early domestication, which drove the pre-existing early flowering allele to near fixation in maize. Interestingly, we detected an independent association block upstream of SNP-1245, wherein the early flowering allele that most likely originated from Zea mays ssp. mexicana introgressed into the early flowering haplotype of SNP-1245 and contributed to maize adaptation to northern high latitudes. Our study demonstrates how independent cis-regulatory variants at a gene can be selected at different evolutionary times for local adaptation, highlighting how complex cis-regulatory control mechanisms evolve. Finally, we propose a polygenic map for the pre-Columbian spread of maize throughout the Americas., (Copyright © 2018 Elsevier Ltd. All rights reserved.)
- Published
- 2018
- Full Text
- View/download PDF
13. Defining the Role of the MADS-Box Gene, Zea Agamous-like1, a Target of Selection During Maize Domestication.
- Author
-
Wills DM, Fang Z, York AM, Holland JB, and Doebley JF
- Subjects
- Alleles, Amino Acid Substitution, Domestication, MADS Domain Proteins genetics, Models, Genetic, Selection, Genetic, Zea mays physiology, Flowers genetics, Plant Proteins genetics, Zea mays genetics
- Abstract
Genomic scans for genes that show the signature of past selection have been widely applied to a number of species and have identified a large number of selection candidate genes. In cultivated maize (Zea mays ssp. mays) selection scans have identified several hundred candidate domestication genes by comparing nucleotide diversity and differentiation between maize and its progenitor, teosinte (Z. mays ssp. parviglumis). One of these is a gene called zea agamous-like1 (zagl1), a MADS-box transcription factor, that is known for its function in the control of flowering time. To determine the trait(s) controlled by zagl1 that was (were) the target(s) of selection during maize domestication, we created a set of recombinant chromosome isogenic lines that differ for the maize versus teosinte alleles of zagl1 and which carry cross-overs between zagl1 and its neighbor genes. These lines were grown in a randomized trial and scored for flowering time and domestication related traits. The results indicated that the maize versus teosinte alleles of zagl1 affect flowering time as expected, as well as multiple traits related to ear size with the maize allele conferring larger ears with more kernels. Our results suggest that zagl1 may have been under selection during domestication to increase the size of the maize ear.
- Published
- 2018
- Full Text
- View/download PDF
14. Entrustable Professional Activities For Residency Training in Physical Medicine and Rehabilitation.
- Author
-
Mallow M, Baer H, Moroz A, and Nguyen VQC
- Subjects
- Advisory Committees, Competency-Based Education standards, Delphi Technique, Educational Measurement, Humans, United States, Clinical Competence standards, Education, Medical, Graduate standards, Internship and Residency, Physical and Rehabilitation Medicine education
- Abstract
Entrustable professional activities are observable units of professional practice that can potentially provide a link between competency-based medical education and clinical practice. The authors, part of a subcommittee of the Association of Academic Physiatrists Education Committee, identified a set of entrustable professional activities that would serve residency training programs in the specialty of physical medicine and rehabilitation. Using a modified Delphi process, residency program directors in the field reviewed and validated a set of entrustable professional activities. The final set of 19 entrustable professional activities is presented in this article.
- Published
- 2017
- Full Text
- View/download PDF
15. Patient Beliefs Have a Greater Impact Than Barriers on Medication Adherence in a Community Health Center.
- Author
-
Gagnon MD, Waltermaurer E, Martin A, Friedenson C, Gayle E, and Hauser DL
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Female, Health Care Surveys, Humans, Male, Medication Adherence statistics & numerical data, Middle Aged, New York City, Self Report, Young Adult, Community Health Centers, Family Practice, Health Knowledge, Attitudes, Practice, Health Services Accessibility statistics & numerical data, Medication Adherence psychology
- Abstract
Purpose: Nonadherence to medicines contributes to poor health outcomes, especially for patients with complicated medicine regimens. We examined adherence among patients at a family health center and the impact that barriers to getting medicines and negative beliefs about medicines have on adherence., Methods: A survey was administered incorporating the 8-item Morisky Medication Adherence Scale, questions from the Beliefs about Medicine Questionnaire, and questions about patients' external barriers to getting medicines. Low adherence was examined by any external barrier and by higher negative beliefs, adjusting for patient characteristics., Results: The convenience sample of 343 participants is demographically representative of the larger population. Among these patients, 54% report low adherence, 51% have at least 1 barrier to adherence, and 52% report more negative than positive beliefs about medicines. When beliefs and barriers are examined together, patients with negative beliefs are 49% less likely to adhere than those with more positive beliefs, whereas barriers show no significant impact on adherence., Conclusions: Negative beliefs about medicines are as prevalent in this population as external barriers to accessing medicines, but negative beliefs were more significantly associated with adherence than external barriers. Physicians should identify and address patients' negative beliefs about medicines to improve adherence rates., Competing Interests: Conflict of interest: none declared., (© Copyright 2017 by the American Board of Family Medicine.)
- Published
- 2017
- Full Text
- View/download PDF
16. Shared cultural norms for justice in water institutions: results from Fiji, Ecuador, Paraguay, New Zealand, and the U.S.
- Author
-
Wutich A, York AM, Brewis A, Stotts R, and Roberts CM
- Subjects
- Consensus, Ecuador, New Zealand, Paraguay, United States, Social Justice
- Abstract
It is widely agreed that current institutions are insufficient to meet global water challenges, and extensive institutional reforms are needed. To achieve effective local water management, institutional rules should be congruent with local cultural norms. Conversely, a major potential challenge is posed by tensions between institutional rules and local cultural norms for justice. We propose and demonstrate a new approach to cross-cultural analysis designed to investigate this tension, which can assess when local cultural norms are likely to facilitate or impede the acceptance of specific institutional rules. Using data from 238 respondents in five global sites (in Fiji, Ecuador, Paraguay, New Zealand, and the U.S.) analyzed using cultural consensus analysis, we find evidence of culturally-shared norms of justice in water institutions in at least six domains: a human right to water, water governance, water access, environmental stewardship, aspects of water markets, and aspects of water quality and health. Additionally, local cultural models across sites differed on only two topics: (1) ownership and allocation and (2) restrictions and enforcement. Indigenous heritage is the best single predictor of views on controversial institutional rules dealing with water restrictions/enforcement and ownership/allocation. This approach can help build effective water management solutions by identifying cases in which specific institutional reforms are congruent with local cultural norms (or not), and when those will matter most., (Copyright © 2012 Elsevier Ltd. All rights reserved.)
- Published
- 2012
- Full Text
- View/download PDF
17. An empirical evaluation of private landowner participation in voluntary forest conservation programs.
- Author
-
Kauneckis D and York AM
- Subjects
- Data Collection, Geographic Information Systems, Humans, Indiana, Private Sector, Conservation of Natural Resources, Forestry, Ownership
- Abstract
The use of voluntary programs targeting resource conservation on private land has become increasingly prevalent in environmental policy. Voluntary programs potentially offer significant benefits over regulatory and market-based approaches. This article examines the factors affecting landowner participation in voluntary forest conservation programs using a combination of parcel-level GIS and remotely sensed data and semi-structured interviews of landowners in Monroe County, Indiana. A logistic regression model is applied to determine the probability of participation based on landowner education, membership in other non-forest voluntary programs, dominant land use activity, parcel size, distance from urban center, land resource portfolios, and forest cover. Both land use activity and the spatial configuration of a landholder's resource portfolio are found to be statistically significant with important implications for the design and implementation of voluntary programs.
- Published
- 2009
- Full Text
- View/download PDF
18. Identification of SNPs and INDELS in swine transcribed sequences using short oligonucleotide microarrays.
- Author
-
Bischoff SR, Tsai S, Hardison NE, York AM, Freking BA, Nonneman D, Rohrer G, and Piedrahita JA
- Subjects
- Animals, Base Sequence, Computational Biology, DNA genetics, Female, Fetus metabolism, Gene Expression Profiling, Linear Models, Male, Oligonucleotide Array Sequence Analysis methods, Oligonucleotide Array Sequence Analysis statistics & numerical data, Placenta metabolism, Pregnancy, RNA genetics, Species Specificity, INDEL Mutation, Polymorphism, Single Nucleotide, Swine genetics
- Abstract
Background: Genome-wide detection of single feature polymorphisms (SFP) in swine using transcriptome profiling of day 25 placental RNA by contrasting probe intensities from either Meishan or an occidental composite breed with Affymetrix porcine microarrays is presented. A linear mixed model analysis was used to identify significant breed-by-probe interactions., Results: Gene specific linear mixed models were fit to each of the log2 transformed probe intensities on these arrays, using fixed effects for breed, probe, breed-by-probe interaction, and a random effect for array. After surveying the day 25 placental transcriptome, 857 probes with a q-value < or = 0.05 and |fold change| > or = 2 for the breed-by-probe interaction were identified as candidates containing SFP. To address the quality of the bioinformatics approach, universal pyrosequencing assays were designed from Affymetrix exemplar sequences to independently assess polymorphisms within a subset of probes for validation. Additionally probes were randomly selected for sequencing to determine an unbiased confirmation rate. In most cases, the 25-mer probe sequence printed on the microarray diverged from Meishan, not occidental crosses. This analysis was used to define a set of highly reliable predicted SFPs according to their probability scores., Conclusion: By applying a SFP detection method to two mammalian breeds for the first time, we detected transition and transversion single nucleotide polymorphisms, as well as insertions/deletions which can be used to rapidly develop markers for genetic mapping and association analysis in species where high density genotyping platforms are otherwise unavailable.SNPs and INDELS discovered by this approach have been publicly deposited in NCBI's SNP repository dbSNP. This method is an attractive bioinformatics tool for uncovering breed-by-probe interactions, for rapidly identifying expressed SNPs, for investigating potential functional correlations between gene expression and breed polymorphisms, and is robust enough to be used on any Affymetrix gene expression platform.
- Published
- 2008
- Full Text
- View/download PDF
19. Intratumoral administration of cisplatin through a bronchoscope followed by irradiation for treatment of inoperable non-small cell obstructive lung cancer.
- Author
-
Celikoglu F, Celikoglu SI, York AM, and Goldberg EP
- Subjects
- Adult, Aged, Bronchoscopes, Carcinoma, Non-Small-Cell Lung mortality, Carcinoma, Non-Small-Cell Lung pathology, Cisplatin adverse effects, Combined Modality Therapy, Female, Humans, Lung Neoplasms mortality, Lung Neoplasms pathology, Male, Middle Aged, Radiotherapy adverse effects, Antineoplastic Agents administration & dosage, Carcinoma, Non-Small-Cell Lung therapy, Cisplatin administration & dosage, Lung Neoplasms therapy
- Abstract
Purpose: Patients presenting with inoperable non-small cell carcinoma of the lung associated with severe bronchial obstruction are at a high risk for developing post-obstructive pneumonia or respiratory failure. This often leads to death in weeks to months. Several studies suggest that initial use of debulking of obstructed airways by Nd-YAG laser photo resection or by cryotherapy lessens morbidity by reducing infections and respiratory insufficiencies. This can shorten hospitalization, improve the quality of life, and prolong survival. It has also been demonstrated that patients first treated for debulking and then by irradiation have better survival than similar patients treated with irradiation alone. Intratumoral (IT) injection of cytotoxic drugs (IT chemotherapy) has also been successfully used to debulk airways. The aim of the present work was to study the effectiveness, safety, and feasibility of initial debulking by IT chemotherapy with cisplatin combined with irradiation with a curative intent in the treatment of obstructive inoperable non-small cell lung cancer., Patients and Methods: Twenty three patients were treated first by bronchoscopic IT injection of up to 40 mg cisplatin solution (4 mg/ml), administered weekly four times (on days: 1, 8, 15, 22) and then by irradiation., Results: At the end of a 3-week period of IT treatment, 11 of 23 patients showed an increase in airway lumen diameter of more than 50% (good response), 8 patients showed an improvement of 25-50% (partial response) and 4 patients showed an increase of less than 25% (small response). Overall, debulking by IT chemotherapy was considered clinically effective in 19 of 23 patients and only marginally effective in 4 patients. Statistical analysis indicated a statistically significant improvement in lumen diameter (P < 0.001) for all patients. The combination of IT chemotherapy and irradiation resulted in prolonged survival in the patients with good response (median survival 636 days) compared to patients with partial response (median survival 342 days). The four patients with only a small response had a median survival of 202 days., Conclusions: Debulking by intratumoral injection of cisplatin was shown to be a safe, simple, and cost effective procedure. There were no severe side effects and complications. Initial debulking of obstructed airways by IT administration of cisplatin, followed by irradiation requires further studies in order to determine its effect on survival.
- Published
- 2006
- Full Text
- View/download PDF
20. Efficacy of mitoxantrone-loaded albumin microspheres for intratumoral chemotherapy of breast cancer.
- Author
-
Almond BA, Hadba AR, Freeman ST, Cuevas BJ, York AM, Detrisac CJ, and Goldberg EP
- Subjects
- Adenocarcinoma pathology, Albumins, Animals, Antineoplastic Agents administration & dosage, Body Weight drug effects, Female, Mammary Neoplasms, Experimental pathology, Mice, Mice, Inbred C3H, Microscopy, Electron, Scanning, Microspheres, Mitoxantrone administration & dosage, Survival Analysis, Adenocarcinoma drug therapy, Antineoplastic Agents therapeutic use, Mammary Neoplasms, Experimental drug therapy, Mitoxantrone therapeutic use
- Abstract
Systemic toxicity of intravenously delivered chemotherapy is a limiting factor in the treatment of many cancers. We have shown that intratumoral injection of antineoplastic drugs can provide high localized drug concentrations with greatly reduced systemic toxicity. Using albumin microspheres as a drug carrier, localized and sustained release of chemotherapeutic drugs has been achieved by intratumoral injection, thus increasing the intratumoral dose and antitumor efficacy. Microspheres provide the advantages of localized, prolonged drug release. The efficacy and toxicity of intratumoral free mitoxantrone or mitoxantrone-loaded albumin microspheres were evaluated in a murine breast cancer model. In the same model, a combination of these two therapies was also evaluated. Results indicated that intratumoral mitoxantrone, especially in microsphere preparations, significantly improved survival and decreased systemic toxicity.
- Published
- 2003
- Full Text
- View/download PDF
21. HIPAA Smarts. Top 10 privacy musts.
- Author
-
York AM
- Subjects
- Disclosure legislation & jurisprudence, Documentation, Guideline Adherence legislation & jurisprudence, Humans, Inservice Training, Patient Care Management, Rehabilitation Centers legislation & jurisprudence, United States, Confidentiality legislation & jurisprudence, Guideline Adherence organization & administration, Health Insurance Portability and Accountability Act, Rehabilitation Centers organization & administration
- Published
- 2003
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.