Digital Commons Network^™

Demonstration Of The Gunnarsson-Lundqvist Theorem And The Multiplicity Of Potentials For Excited States, Yu-Qi Li, Xiao-Yin Pan, Biao Li, Viraht Sahni

Publications and Research

The Gunnarsson-Lundqvist (GL) theorem of density functional theory states that there is a one-to-one relationship between the density of the lowest nondegenerate excited state of a given symmetry and the external potential. As a consequence, knowledge of this excited state density determines the external potential uniquely. [The GL theorem is the equivalent for such excited states of theHohenberg-Kohn (HK) theorem for nondegenerate ground states.] For other excited states, there is no equivalent of the GL or HK theorem. For these states, there thus exist multiple potentials that generate the excited-state density. We show, by example, the satisfaction that the GL …

Using Equivalence-Based Instruction To Increase Efficiency In Teaching Neuroanatomy, Carolyn L. Pytte, Daniel M. Fienup

Publications and Research

A goal of all instruction is to efficiently allocate time spent teaching -- balancing redundancy that enhances learning with redundancy that is irrelevant to increasing student understanding. Efficient allocation of time allows the instructor to present additional material and go into more detail about the information being presented. Here we borrow laboratory research on concept formation and apply these formal principles in teaching introductory neuroanatomy within a lecture course on Behavioral Neuroscience. Concept formation is taught by pairing multiple stimuli, for instance brain name, location, and function, in such a way that novel associations within a category emerge without direct …

Entropy And The Complexity Of Graphs Revisited, Abbe Mowshowitz, Matthias Dehmer

Publications and Research

This paper presents a taxonomy and overview of approaches to the measurement of graph and network complexity. The taxonomy distinguishes between deterministic (e.g., Kolmogorov complexity) and probabilistic approaches with a view to placing entropy-based probabilistic measurement in context. Entropy-based measurement is the main focus of the paper. Relationships between the different entropy functions used to measure complexity are examined; and intrinsic (e.g., classical measures) and extrinsic (e.g., Körner entropy) variants of entropy-based models are discussed in some detail.

College Senate Minutes March 8, 2012, Bronx Community College Senate

BCC Governance Archives

Minutes for the meeting of the College Senate on March 8, 2012.

The Logic Of Fashion Cycles, Alberto Acerbi, Stefano Ghirlanda, Magnus Enquist

Publications and Research

Many cultural traits exhibit volatile dynamics, commonly dubbed fashions or fads. Here we show that realistic fashion-like dynamics emerge spontaneously if individuals can copy others' preferences for cultural traits as well as traits themselves. We demonstrate this dynamics in simple mathematical models of the diffusion, and subsequent abandonment, of a single cultural trait which individuals may or may not prefer. We then simulate the coevolution between many cultural traits and the associated preferences, reproducing power-law frequency distributions of cultural traits (most traits are adopted by few individuals for a short time, and very few by many for a long time), …

Catalog Addendum Spring 2012, Kingsborough Community College

Course Catalogs

No abstract provided.

Queensborough Community College: Textbook Reserves, Sheila Beck

Publications and Research

This paper examines the textbook reserve collection at Queensborough Community College. Although the collection is heavily used in its current configuration, the library is looking for less labor intensive and less costly alternatives.

The cost of textbooks is skyrocketting. Textbooks are a major, unexpected bill for many students beginning college. Students and their family, used to having their textbooks provided or loaned free of charge at the start of the school year, face often large and unexpected bills when the first term begins. Many times, financial aid does not cover the cost of the books;. Even if it is covered …

Coupling Of Fog And Marine Microbial Content In The Near-Shore Coastal Environment, M. E. Ducker, Gregory D. O'Mullan, K. C. Weathers, A. R. Juhl, M. Uriarte

Publications and Research

Microbes in the atmosphere (microbial aerosols) play an important role in climate and provide an ecological and biogeochemical connection between oceanic, atmospheric, and terrestrial environments. However, the sources and environmental factors controlling the concentration, diversity, transport, and viability of microbial aerosols are poorly understood. This study examined culturable microbial aerosols from a coastal environment in Maine (USA) and determined the effect of onshore wind speed and fog presence on deposition rate, source, and community composition. During fog events with low onshore winds (

Aligned Layers Of Silver Nano-Fibers, Andrii B. Golovin, Jeremy Stromer, Liubov Kreminska

Publications and Research

We describe a new dichroic polarizers made by ordering silver nano-fibers to aligned layers. The aligned layers consist of nano-fibers and self-assembled molecular aggregates of lyotropic liquid crystals. Unidirectional alignment of the layers is achieved by means of mechanical shearing. Aligned layers of silver nano-fibers are partially transparent to a linearly polarized electromagnetic radiation. The unidirectional alignment and density of the silver nano-fibers determine degree of polarization of transmitted light. The aligned layers of silver nano-fibers might be used in optics, microwave applications, and organic electronics.

Horizontally-Aligned Carbon Nanotubes Arrays And Their Interactions With Liquid Crystal Molecules: Physical Characteristics And Display Applications, Frederick Roussel, Jean-Francois Brun, Alexandre Allart, Limin Huang, Stephen O'Brien

Publications and Research

We report on the physical characteristics of horizonthally-grown Single-Walled Carbon Nanotubes (h-al-SWNT) arrays and their potential use as transparent and conducting alignment layer for liquid crystals display devices. Microscopy (SEM and AFM), spectroscopic (Raman) and electrical investigations demonstrate the strong anisotropy of h-al-SWNT arrays. Optical measurements show that h-al-SWNTs are efficient alignment layers for Liquid Crystal (LC) molecules allowing the fabrication of optical wave plates. Interactions between h-al-SWNT arrays and LC molecules are also investigated evidencing the weak azimuthal anchoring energy at the interface, which, in turn, leads to LC devices with a high pretilt angle. The electro-optical reponses of …

Course Catalog 2012-2013, Laguardia Community College

Course Catalogs

No abstract provided.

Tr-2012004: Solving Linear Systems Of Equations With Randomization, Augmentation And Aggregation, Victor Y. Pan, Guoliang Qian

Computer Science Technical Reports

No abstract provided.

Tr-2012011: Binding Modalities, Sergei N. Artemov, Tatiana Yavorskaya (Sidon)

Computer Science Technical Reports

No abstract provided.

Tr-2012005: Randomized Matrix Computations, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng

Computer Science Technical Reports

No abstract provided.

Tr-2012015: Randomized Matrix Methods For Real And Complex Polynomial Root-Finding, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng

Computer Science Technical Reports

No abstract provided.

Tr-2012010: Explicit Generic Common Knowledge, Evangelia Antonakos

Computer Science Technical Reports

No abstract provided.

Tr-2012001: Algebraic Algorithms, Ioannis Z. Emiris, Victor Y. Pan, Elias P. Tsigaridas

Computer Science Technical Reports

No abstract provided.

Tr-2012002: Randomized Matrix Methods For Real And Complex Polynomial Root-Finding, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng

Computer Science Technical Reports

No abstract provided.

Tr-2012003: Root-Finding And Root-Refining For A Polynomial Equation, Victor Y. Pan

Computer Science Technical Reports

No abstract provided.

Tr-2012006: Randomized Matrix Computations Ii, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng

Computer Science Technical Reports

No abstract provided.

Tr-2012008: Randomized Matrix Computations Iii, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng

Computer Science Technical Reports

No abstract provided.

Tr-2012009: Randomized Matrix Computations Iv, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng

Computer Science Technical Reports

No abstract provided.

Tr-2012012: Condition Estimation By Means Of Power Method, Victor Y. Pan

Computer Science Technical Reports

No abstract provided.

Tr-2012016: More On The Power Of Randomized Matrix Multiplication I, Victor Y. Pan, Guoliang Qian

Computer Science Technical Reports

No abstract provided.

An Assessment Of Strategies For Choosing Between Competitive Marketplaces, Tim Miller, Jinzhong Niu

Publications and Research

Traders that operate in markets with multiple competing marketplaces must often choose with which marketplace they will trade. These choices encourage marketplaces to seek competitive advantages against each other by adjusting various parameters, such as the price they charge, or how they match buyers and sellers. Traders can take advantage of this competition to improve utility. However, appropriate strategies must be used to decide with which marketplace a trader should shout. In this paper, we assess several different solutions to the problem of marketplace selection by running simulations of double auctions using the JCAT platform. The parameter spaces of these …

Phenomenological Theories Of Crime, Peter K. Manning, Michael W. Raphael

Graduate Student Publications and Research

The distinctive aspect of phenomenological theories of crime is that they are based upon a stated epistemology: how things are known and a specific ontology—the nature of social reality. This specificity aligns itself with neo-Kantian concern with forms of knowing, interpretation, and meaning, as well as with 20th-century concern with perception, cognition, and the framing of events. While there are influences of phenomenological thinking on varieties of theorizing, such as symbolic interactionism, critical theory, queer theory, and gender-based theories of crime, these ideas are refractions and are inconsistent in their reference to and understanding of the foundational phenomenological works. A …

Tr-2012007: Solving Linear Systems Of Equations With Randomization, Augmentation And Aggregation Ii, Victor Y. Pan, Guoliang Qian

Computer Science Technical Reports

No abstract provided.

Tr-2012013: Condition Numbers Of Random Toeplitz And Circulant Matrices, Victor Y. Pan, Guoliang Qian

Computer Science Technical Reports

No abstract provided.

Tr-2012014: More On The Power Of Randomized Matrix Multiplication, Victor Y. Pan, Guoliang Qian

Computer Science Technical Reports

No abstract provided.

De Meo Carries On Tradition Of Teaching Chemistry, Aldemaro Romero Jr.

Publications and Research

No abstract provided.