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Articles 1921 - 1950 of 2397
Full-Text Articles in Entire DC Network
Pltl In The Developmental Writing Classsroom, Aaron Barlow, A. E. Dreyfuss, Jennifer Sears, Amelise Bonhomme, Rennee Clarke, Sungsoo Moon, Jodi-Ann Young, Lori Younge
Pltl In The Developmental Writing Classsroom, Aaron Barlow, A. E. Dreyfuss, Jennifer Sears, Amelise Bonhomme, Rennee Clarke, Sungsoo Moon, Jodi-Ann Young, Lori Younge
Publications and Research
Writing placement exam preparation can be broken down into small tasks overseen by Peer Leaders, following (though not precisely) patterns set out by Fred Keller in “Good-bye Teacher” in 1968. The mechanical aspect of writing, however, is never enough for the production of essays that communicate, something that requires audience and a desire to “speak.” Students in developmental classrooms often have problems beyond the writing itself: they may be test shy and may not be prepared to take on even college entry tasks without careful direction. Working with Peer Leaders, the developmental program can address the problems of mechanics and …
Homogeneous Besov Spaces On Stratified Lie Groups And Their Wavelet Characterization, Hartmut Fuhr, Azita Mayeli
Homogeneous Besov Spaces On Stratified Lie Groups And Their Wavelet Characterization, Hartmut Fuhr, Azita Mayeli
Publications and Research
We establish wavelet characterizations of homogeneous Besov spaces on stratified Lie groups, bothin terms of continuous and discrete wavelet systems. We first introduce a notion of homogeneous Besov space ̇Bsp,qin terms of a Littlewood-Paley-type decomposition, in analogy to the well-known characterization of the Euclidean case. Such decompositions can be defined via the spectral measure of a suitably chosen sub-Laplacian. We prove that the scale of Besov spaces is independent of the precise choice of Littlewood-Paley decomposition. In particular, different sub-Laplacians yield the same Besov spaces. We then turn to wavelet characterizations, first via continuous wavelet transforms which can be viewed …
Equivariant Degenerations Of Spherical Modules For Groups Of Type A, Stavros Argyrios Papadakis, Bart Van Steirteghem
Equivariant Degenerations Of Spherical Modules For Groups Of Type A, Stavros Argyrios Papadakis, Bart Van Steirteghem
Publications and Research
Let G be a complex reductive algebraic group. Fix a Borel subgroup B of G and a maximal torus T in B. Call the monoid of dominant weights L+ and let S be a finitely generated submonoid of L+. V. Alexeev and M. Brion introduced a moduli scheme MS which classifies affine G-varieties X equipped with a T-equivariant isomorphism SpecC[X]U → SpecC[S], where U is the unipotent radical of B. Examples of MS have been obtained by S. Jansou, P. Bravi and S. Cupit-Foutou. In this paper, we prove that MS is isomorphic to an affine space when S is …
Cross-Talk: A Shared Parameter Space For Gesturally Extended Human/Machine Improvisation, William Brent, Adam James Wilson
Cross-Talk: A Shared Parameter Space For Gesturally Extended Human/Machine Improvisation, William Brent, Adam James Wilson
Publications and Research
This paper describes Cross-talk, a piece of music and performance system for two instruments augmented with infrared motion-tracking capability, and an artificial software improviser. Cross-talk was commissioned by the Ammerman Center for Arts and Technology at Connecticut College, for the 13th Biennial Symposium on Arts and Technology. The work is part of an ongoing collaboration focused on developing integrated hardware and software performance systems to extend the timbral and expressive capabilities of traditional musical instruments and to generate musical structure in response to information retrieved from human performers in real-time. Artistic motivations and prior related work are presented here, along …
Economic Design Of Acceptance Sampling Plans In A Two-Stage Supply Chain, Lie-Fern Hsu, Jia-Tzer Hsu
Economic Design Of Acceptance Sampling Plans In A Two-Stage Supply Chain, Lie-Fern Hsu, Jia-Tzer Hsu
Publications and Research
Supply Chain Management, which is concerned with material and information flows between facilities and the final customers, has been considered the most popular operations strategy for improving organizational competitiveness nowadays. With the advanced development of computer technology, it is getting easier to derive an acceptance sampling plan satisfying both the producer’s and consumer’s quality and risk requirements. However, all the available QC tables and computer software determine the sampling plan on a noneconomic basis. In this paper, we design an economic model to determine the optimal sampling plan in a two-stage supply chain that minimizes the producer’s and the consumer’s …
Ledzewicz Applies Math To Health Sciences, Aldemaro Romero Jr.
Ledzewicz Applies Math To Health Sciences, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Hamad Studies, Teaches Properties Of Light, Aldemaro Romero Jr.
Hamad Studies, Teaches Properties Of Light, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Minchin Studies, Teaches Conservation Issues, Aldemaro Romero Jr.
Minchin Studies, Teaches Conservation Issues, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Ackad Uses Power Computers To Solve Problems, Aldemaro Romero Jr.
Ackad Uses Power Computers To Solve Problems, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Jones Seeks To Engage Students In Chemistry, Aldemaro Romero Jr.
Jones Seeks To Engage Students In Chemistry, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Hildebrandt Teaches Lessons About Tornadoes, Aldemaro Romero Jr.
Hildebrandt Teaches Lessons About Tornadoes, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Voss Feels People Need To Know How Nature Works, Aldemaro Romero Jr.
Voss Feels People Need To Know How Nature Works, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Jennings Studies Environmental Pollutants, Aldemaro Romero Jr.
Jennings Studies Environmental Pollutants, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Morphine And Clonidine Synergize To Ameliorate Low Back Pain In Mice, Maral Tajerian, Magali Millecamps, Laura S. Stone
Morphine And Clonidine Synergize To Ameliorate Low Back Pain In Mice, Maral Tajerian, Magali Millecamps, Laura S. Stone
Publications and Research
Chronic low back pain (LBP) is a debilitating condition associated with signs of axial and radiating pain. In humans with chronic LBP, opioids are often prescribed with varying outcomes and a multitude of side effects. Combination therapies, in which multiple pharmacological agents synergize to ameliorate pain without similar potentiation of adverse reactions, may be useful in improving therapeutic outcome in these patients. The SPARC-null mouse model of low back pain due to disc degeneration was used to assess the effects of opioid (morphine) andα2-adrenergic agonist (clonidine) coadministration on measures of axial and radiating pain. The results indicate that systemic morphine …
Diffuse Optical Imaging Using Decomposition Methods, Binlin Wu, M. Alrubaiee, W. Cai, M. Xu, S. K. Gayen
Diffuse Optical Imaging Using Decomposition Methods, Binlin Wu, M. Alrubaiee, W. Cai, M. Xu, S. K. Gayen
Publications and Research
Diffuse optical imaging (DOI) for detecting and locating targets in a highly scattering turbid medium is treated as a blind source separation (BSS) problem. Three matrix decomposition methods, independent component analysis (ICA), principal component analysis (PCA), and nonnegative matrix factorization (NMF) were used to study the DOI problem. The efficacy of resulting approaches was evaluated and compared using simulated and experimental data. Samples used in the experiments included Intralipid-10% or Intralipid-20% suspension in water as the medium with absorptive or scattering targets embedded.
Family Processes, Beliefs About Intelligence, And Openness As Predictors Of English Language Learners’ Creative Problem Solving, Seokhee Cho, Norman Eng
Family Processes, Beliefs About Intelligence, And Openness As Predictors Of English Language Learners’ Creative Problem Solving, Seokhee Cho, Norman Eng
Publications and Research
There has been a pressing need in creativity research to discover interactive relationships that can predict creative problem solving, particularly in the fastest growing demographic segment in public schools, immigrants. This study examined the best predictor for creative problem solving attributes of English Language Learners (ELLs) among family processes, beliefs about intelligence, and openness. 198 mathematically promising third graders in seven public schools were selected and administered questionnaires on their family processes, beliefs about intelligence, openness to experience, and creative problem solving attributes. It was found that the Asian English learners' creative problem solving were predicted better with their incremental …
Fluids, Anomalies And The Chiral Magnetic Effect: A Group-Theoretic Formulation, V. Parameswaran Nair, Rashmi Ray, Shubho Roy
Fluids, Anomalies And The Chiral Magnetic Effect: A Group-Theoretic Formulation, V. Parameswaran Nair, Rashmi Ray, Shubho Roy
Publications and Research
It is possible to formulate fluid dynamics in terms of group-valued variables. This is particularly suited to the cases where the fluid has nonabelian charges and is coupled to nonabelian gauge fields. We explore this formulation further in this paper. An action for a fluid of relativistic particles (with and without spin) is given in terms of the Lorentz and Poincare (or de Sitter) groups. Considering the case of particles with flavor symmetries, a general fluid action which also incorporates all flavor anomalies is given. The chiral magnetic and chiral vorticity effects as well as the consequences of the mixed …
History, Interactive Technology And Pedagogy: Past Successes And Future Directions, Stephen Brier
History, Interactive Technology And Pedagogy: Past Successes And Future Directions, Stephen Brier
Publications and Research
Based on a keynote presentation at the 2012 Canadian Historical Association conference, this paper surveys the state of digital technology and its impact on academic publication and teaching in the contemporary university. Focusing on the dramatic rise of the Digital Humanities in the last few years, the paper examines alternative forms of peer review, academic scholarship and publication, and classroom teaching as they have been reshaped by the adoption of a variety of digital technologies and formats, including open-access, online peer reviewing, use of data- bases and visualization techniques in humanities work, online journal publication, and the use of blogs …
Where’S The Pedagogy? The Role Of Teaching And Learning In The Digital Humanities, Stephen Brier
Where’S The Pedagogy? The Role Of Teaching And Learning In The Digital Humanities, Stephen Brier
Publications and Research
The Digital Humanities (DH) has focused narrowly on digital research methods and projects and digital publication efforts. Yet DH has also had a significant, if under recognized, impact on classroom pedagogy. This chapter evaluates the ways DH practices, embodied in a series of pedagogy projects at the City University of York (CUNY), have been used to reshape teaching and learning in college classrooms.
Impaired Structural Connectivity Of Socio-Emotional Circuits In Autism Spectrum Disorders: A Diffusion Tensor Imaging Study, Stephanie H. Ameis, Jin Fan, Conrad Rockel, Aristotle N. Voineskos, Nancy J. Lobaugh, Latha Soorya, A. Ting Wang, Eric Hollander, Evdokia Anagnostou
Impaired Structural Connectivity Of Socio-Emotional Circuits In Autism Spectrum Disorders: A Diffusion Tensor Imaging Study, Stephanie H. Ameis, Jin Fan, Conrad Rockel, Aristotle N. Voineskos, Nancy J. Lobaugh, Latha Soorya, A. Ting Wang, Eric Hollander, Evdokia Anagnostou
Publications and Research
Background Abnormal white matter development may disrupt integration within neural circuits, causing particular impairments in higher-order behaviours. In autism spectrum disorders (ASDs), white matter alterations may contribute to characteristic deficits in complex socio-emotional and communication domains. Here, we used diffusion tensor imaging (DTI) and tract based spatial statistics (TBSS) to evaluate white matter microstructure in ASD. Methods/Principal Findings DTI scans were acquired for 19 children and adolescents with ASD (∼8–18 years; mean 12.4±3.1) and 16 age and IQ matched controls (∼8–18 years; mean 12.3±3.6) on a 3T MRI system. DTI values for fractional anisotropy, mean diffusivity, radial diffusivity and axial …
Wave-Function Functionals For The Density, Marlina Slamet, Xiao-Yin Pan, Viraht Sahni
Wave-Function Functionals For The Density, Marlina Slamet, Xiao-Yin Pan, Viraht Sahni
Publications and Research
We extend the idea of the constrained-search variational method for the construction of wave-function functionals psi[chi] of functions chi. The search is constrained to those functions chi such that psi[chi] reproduces the density rho(r) while simultaneously leading to an upper bound to the energy. The functionals are thereby normalized and automatically satisfy the electron-nucleus coalescence condition. The functionals psi[chi] are also constructed to satisfy the electron-electron coalescence condition. The method is applied to the ground state of the helium atom to construct functionals psi[chi] that reproduce the density as given by the Kinoshita correlated wave function. The expectation of single-particle …
Migration And Invasion Of Brain Tumors, Richard A. Able, Jr., Veronica Dudu, Maribel Vazquez
Migration And Invasion Of Brain Tumors, Richard A. Able, Jr., Veronica Dudu, Maribel Vazquez
Publications and Research
Recent advances in molecular biology have led to new insights in the development, growth and infiltrative behaviors of primary brain tumors (Demuth and Berens, 2004; Huse and Holland, 2010; Johnson et al., 2009; Kanu et al., 2009). These tumors are derived from various brain cell lineages and have been historically classified on the basis of morphological and, more recently, immunohistochemical features with less emphasis on their underlying molecular pathogenesis (Huse and Holland, 2010). The detailed molecular characterization of brain tumors has laid the groundwork for augmentation of standard treatment with patient-specific designed targeted therapies (Johnson et al., 2009; Kanu et …
Undergraduate Research Through Nasa Initiatives, Gaffar Gailani, Sidi Berri, Nieves Angulo
Undergraduate Research Through Nasa Initiatives, Gaffar Gailani, Sidi Berri, Nieves Angulo
Publications and Research
There was a common belief that research should only be introduced at the graduate level or at least the senior undergraduate year. Research in the freshman year was not even a topic for discussion. Today, throughout the City University of New York, colleges are stepping forward and conducting research at all undergraduate levels and achieving good results. Conducting research as part of an internship or with a faculty member, proved to be one of the most effective ways to enhance the skills of the students in STEM by many authors. The department of Mechanical Engineering and Industrial Design Technology at …
Fabrication Of Size-Tunable Metallic Nanoparticles Using Plasmid Dna As A Biomolecular Reactor, Jacopo Samson, Irene Piscopo, Alex Yampolski, Patrick Nahirney, Andrea Parpas, Amit Aggarwal, Raihan Saleh, Charles Michael Drain
Fabrication Of Size-Tunable Metallic Nanoparticles Using Plasmid Dna As A Biomolecular Reactor, Jacopo Samson, Irene Piscopo, Alex Yampolski, Patrick Nahirney, Andrea Parpas, Amit Aggarwal, Raihan Saleh, Charles Michael Drain
Publications and Research
Plasmid DNA can be used as a template to yield gold, palladium, silver, and chromium nanoparticles of different sizes based on variations in incubation time at 70 °C with gold phosphine complexes, with the acetates of silver or palladium, or chromium acetylacetonate. The employment of mild synthetic conditions, minimal procedural steps, and aqueous solvents makes this method environmentally greener and ensures general feasibility. The use of plasmids exploits the capabilities of the biotechnology industry as a source of nanoreactor materials.
Dissemination Of Geological Information In Avoiding Geotechnical Risks Associated With Tunnel Construction: Lessons Learned From Deep Voids In Marble In Lower Manhattan, New York City, Nazrul I. Khandaker, Stanley Schleifer, Masud Ahmed, Leah Scott
Dissemination Of Geological Information In Avoiding Geotechnical Risks Associated With Tunnel Construction: Lessons Learned From Deep Voids In Marble In Lower Manhattan, New York City, Nazrul I. Khandaker, Stanley Schleifer, Masud Ahmed, Leah Scott
Publications and Research
Test boring associated with the recently accomplished City Water Tunnel # 3 in Manhattan, New York City revealed moderately to highly weathered marble with insoluble silicate residues composed mostly of phlogopite, chlorite, and tremolite. Apparent control on the weatherability of the marble was in response to original mineral constituents dominating this lithology. Encountered marble samples ranged between pure calcitic to mixed dolomitic/siliceous types. Fresh marble samples collected from adjacent boring locations revealed characteristic geochemical data: Lime (25-45%), Silica (4-7%), Alumina (1-3%), MgO (5-20%), and LOI (35-42%); compressive strength of unweathered marble varied between 2000-3000 Kg/cm2. Relict foliations with …
Unbound (Bioavailable) Igf1 Enhances Somatic Growth, Sebastien Elis, Yingjie Wu, Hayden-William Courtland, Dara Cannata, Hui Sun, Mordechay Beth-On, Chengyu Liu, Hector Jasper, Horacio Domené, Liliana Karabatas, Clara Guida, Jelena Basta-Pljakic, Luis Cardoso, Clifford J. Rosen, Jan Frystyk, Shoshana Yakar
Unbound (Bioavailable) Igf1 Enhances Somatic Growth, Sebastien Elis, Yingjie Wu, Hayden-William Courtland, Dara Cannata, Hui Sun, Mordechay Beth-On, Chengyu Liu, Hector Jasper, Horacio Domené, Liliana Karabatas, Clara Guida, Jelena Basta-Pljakic, Luis Cardoso, Clifford J. Rosen, Jan Frystyk, Shoshana Yakar
Publications and Research
SUMMARY Understanding insulin-like growth factor-1 (IGF1) biology is of particular importance because, apart from its role in mediating growth, it plays key roles in cellular transformation, organ regeneration, immune function, development of the musculoskeletal system and aging. IGF1 bioactivity is modulated by its binding to IGF-binding proteins (IGFBPs) and the acid labile subunit (ALS), which are present in serum and tissues. To determine whether IGF1 binding to IGFBPs is necessary to facilitate normal growth and development, we used a gene-targeting approach and generated two novel knock-in mouse models of mutated IGF1, in which the native Igf1 gene was replaced by …
The Niddk Central Repository At 8 Years—Ambition, Revision, Use And Impact, Charles F. Turner, Huaqin Pan, Gregg W. Silk, Mary-Anne Ardini, Vesselina Bakalov, Stephanie Bryant, Susanna Cantor, Kung-Yen Chang, Michael Delatte, Paul Eggers, Laxminarayana Ganapathi, Sujatha Lakshmikanthan, Joshua Levy, Sheping Li, Joseph Pratt, Norma Pugh, Ying Qin, Rebekah Rasooly, Helen Ray, Jean E. Richardson, Amanda Flynn Riley, Susan M. Rogers, Charlotte Scheper, Sylvia Tan, Stacie White, Philip C. Cooley
The Niddk Central Repository At 8 Years—Ambition, Revision, Use And Impact, Charles F. Turner, Huaqin Pan, Gregg W. Silk, Mary-Anne Ardini, Vesselina Bakalov, Stephanie Bryant, Susanna Cantor, Kung-Yen Chang, Michael Delatte, Paul Eggers, Laxminarayana Ganapathi, Sujatha Lakshmikanthan, Joshua Levy, Sheping Li, Joseph Pratt, Norma Pugh, Ying Qin, Rebekah Rasooly, Helen Ray, Jean E. Richardson, Amanda Flynn Riley, Susan M. Rogers, Charlotte Scheper, Sylvia Tan, Stacie White, Philip C. Cooley
Publications and Research
The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) Central Repository makes data and biospecimens from NIDDK-funded research available to the broader scientific community. It thereby facilitates: the testing of new hypotheses without new data or biospecimen collection; pooling data across several studies to increase statistical power; and informative genetic analyses using the Repository’s well-curated phenotypic data. This article describes the initial database plan for the Repository and its revision using a simpler model. Among the lessons learned were the trade-offs between the complexity of a database design and the costs in time and money of implementation; the …
Drosophila Insulin And Target Of Rapamycin (Tor) Pathways Regulate Gsk3 Beta Activity To Control Myc Stability And Determine Myc Expression In Vivo, Federica Parisi, Sara Riccardo, Margaret Daniel, Mahesh Saqcena, Nandini Kundu, Annalisa Pession, Daniela Grifoni, Hugo Stocker, Esteban Tabak, Paola Bellosta
Drosophila Insulin And Target Of Rapamycin (Tor) Pathways Regulate Gsk3 Beta Activity To Control Myc Stability And Determine Myc Expression In Vivo, Federica Parisi, Sara Riccardo, Margaret Daniel, Mahesh Saqcena, Nandini Kundu, Annalisa Pession, Daniela Grifoni, Hugo Stocker, Esteban Tabak, Paola Bellosta
Publications and Research
Background Genetic studies in Drosophila melanogaster reveal an important role for Myc in controlling growth. Similar studies have also shown how components of the insulin and target of rapamycin (TOR) pathways are key regulators of growth. Despite a few suggestions that Myc transcriptional activity lies downstream of these pathways, a molecular mechanism linking these signaling pathways to Myc has not been clearly described. Using biochemical and genetic approaches we tried to identify novel mechanisms that control Myc activity upon activation of insulin and TOR signaling pathways. Results Our biochemical studies show that insulin induces Myc protein accumulation in Drosophila S2 …
The Accuracy Of The Electrocardiogram During Exercise Stress Test Based On Heart Size, Jason C. Siegler, Shafiq Rehman, Geetha P. Bhumireddy, Raushan Abdula, Igor Klem, Sorin J. Brener, Leonard Lee, Christopher C. Dunbar, Barry Saul, Terrence J. Sacchi, John F. Heitner
The Accuracy Of The Electrocardiogram During Exercise Stress Test Based On Heart Size, Jason C. Siegler, Shafiq Rehman, Geetha P. Bhumireddy, Raushan Abdula, Igor Klem, Sorin J. Brener, Leonard Lee, Christopher C. Dunbar, Barry Saul, Terrence J. Sacchi, John F. Heitner
Publications and Research
Background Multiple studies have shown that the exercise electrocardiogram (ECG) is less accurate for predicting ischemia, especially in women, and there is additional evidence to suggest that heart size may affect its diagnostic accuracy. Hypothesis The purpose of this investigation was to assess the diagnostic accuracy of the exercise ECG based on heart size. Methods We evaluated 1,011 consecutive patients who were referred for an exercise nuclear stress test. Patients were divided into two groups: small heart size defined as left ventricular end diastolic volume (LVEDV) <65 mL (Group A) and normal heart size defined as LVEDV ≥65 mL (Group B) and associations between ECG outcome (false positive vs. no false positive) and heart size (small vs. normal) were analyzed using the Chi square test for independence, with a Yates continuity correction. LVEDV calculations were performed via a computer-processing algorithm. SPECT myocardial perfusion imaging was used as the gold standard for the presence of coronary artery disease (CAD). Results Small heart size was found in 142 patients, 123 female and 19 male patients. There was a significant association between ECG outcome and heart size (χ2 = 4.7, p = 0.03), where smaller hearts were associated with a significantly greater number of false positives. Conclusions This study suggests a possible explanation for the poor diagnostic accuracy of exercise stress testing, especially in women, as the overwhelming majority of patients with small heart size were women.
Group 11 Metal Compounds With Tripodal Bis(Imidazole) Thioether Ligands. Applications As Catalysts In The Oxidation Of Alkenes And As Antimicrobial Agents, Fangwei Liu, Reema Anis, Eunmi Hwang, Rafael Ovalle, Armando Varela-Ramírez, Renato J. Aguilera, María Contel
Group 11 Metal Compounds With Tripodal Bis(Imidazole) Thioether Ligands. Applications As Catalysts In The Oxidation Of Alkenes And As Antimicrobial Agents, Fangwei Liu, Reema Anis, Eunmi Hwang, Rafael Ovalle, Armando Varela-Ramírez, Renato J. Aguilera, María Contel
Publications and Research
New group 11 metal complexes have been prepared using the previously described tripodal bis(imidazole) thioether ligand (N-methyl-4,5-diphenyl-2- imidazolyl)2C(OMe)C(CH3)2S(tert-Bu) ({BITOMe,StBu}, 2). The pincer ligand offers a N2S donor atom set that can be used to coordinate the group 11 metals in different oxidation states [AuI , AuIII, AgI , CuI and CuII]. Thus the new compounds [Au{BITOMe,StBu}Cl][AuCl4]2 (3), [Au{BITOMe,StBu}Cl] (4), [Ag{BITOMe,StBu}X] (X = OSO2CF3 - 5, PF6 - 6) and [Cu{BITOMe,StBu}Cl2] (7) have been synthesized from reaction of 2 with the appropriate metal precursors, and characterized in solution. While attempting characterization in the solid state of 3, single crystals of the …