Data expansion with Huffman codes

The following topics were dealt with: Shannon theory; universal lossless source coding; CDMA; turbo codes; broadband networks and protocols; signal processing and coding; coded modulation; information theory and applications; universal lossy source coding; algebraic geometry codes; modelling analysis and stability in networks; trellis structures and trellis decoding; channel capacity; recording channels; fading channels; convolutional codes; neural networks and learning; estimation; Gaussian channels; rate distortion theory; constrained channels; 2D channel coding; nonparametric estimation and classification; data compression; synchronisation and interference in communication systems; cyclic codes; signal detection; group codes; multiuser systems; entropy and noiseless source coding; dispersive channels and equalisation; block codes; cryptography; image processing; quantisation; random processes; wavelets; sequences for synchronisation; iterative decoding; optical communications

The Effects of Family Dynamics on Pediatric Intervention

The family unit in America is becoming extremely diverse in its composition, perceptions, and capabilities. It is this diversity which challenges professionals to perceive and interact with each family as an unique entity. Most importantly, though, is the influence of family dynamics on the outcomes of therapeutic interventions for children with disabilities. Since the passage of Public Law 99-457, the focus of intervention has moved from treatment of the individual child to services involving the family as a single functioning unit. . Services are then provided to the child and family, as the family needs influence the child\u27s growth and development. The purpose of this study is to address the issues facing families with children who have special needs. Specific questions to be addressed include: 1.) What characteristics of families promote intervention? 2.) What are the stressors that influence family involvement with intervention? 3.) What is beneficial for therapists to know to be effective in servicing families? The procedure used for this study will be a literature review comprised of information on the structure and characteristics in today\u27s society of new families. Also, a brief summary will identify the effects of culture and stress on several coping mechanisms. Finally, specific approaches, suggested by both professionals and parents, are incorporated for therapists to use in developing partnerships with families, which will enable the intervention team to work toward the best quality of care for a child with special needs. The results gathered form this independent study will add to the knowledge of pediatric therapists on how to better communicate and function as a team member within each individual family system

Gamifying Digital Work: An Empirical Investigation how Gamification Affects IS Use Appraisal

Information systems (IS) and their healthy use are becoming increasingly important in the digital work environment. The cognitive appraisal of an IS-enabled demand is decisive for whether IS use leads to positive or negative outcomes. This work investigates how gamification integrated into IS can support challenge appraisal and reduce threat appraisal of IS-enabled demands. We conduct an online experiment to examine the impact of gamification on appraisal. We simulate time urgency in a gamified IS and examine how challenge and threat appraisal develop among participants during the experiment. We examine the panel data with a Latent Growth Model and find that gamified IS does not initially reduce threat appraisal but reduces it over time. Challenge appraisal is not significantly higher among users working in gamified IS. That this hypothesiszed effect does not show in the data might require further research. Our paper contributes to a better understanding of the cognitive appraisal process in IS use research and identifies gamification as a valuable tool to positively influence the cognitive appraisal process

Neurosystems: brain rhythms and cognitive processing

Neuronal rhythms are ubiquitous features of brain dynamics, and are highly correlated with cognitive processing. However, the relationship between the physiological mechanisms producing these rhythms and the functions associated with the rhythms remains mysterious. This article investigates the contributions of rhythms to basic cognitive computations (such as filtering signals by coherence and/or frequency) and to major cognitive functions (such as attention and multi-modal coordination). We offer support to the premise that the physiology underlying brain rhythms plays an essential role in how these rhythms facilitate some cognitive operations.098352 - Wellcome Trust; 5R01NS067199 - NINDS NIH HH

NASA Aerospace Flight Battery Program: Recommendations for Technical Requirements for Inclusion in Aerospace Battery Procurements

This NASA Aerospace Flight Battery Systems Working Group was chartered within the NASA Engineering and Safety Center (NESC). The Battery Working Group was tasked to complete tasks and to propose proactive work to address battery related, agency-wide issues on an annual basis. In its first year of operation, this proactive program addressed various aspects of the validation and verification of aerospace battery systems for NASA missions. Studies were performed, issues were discussed and in many cases, test programs were executed to generate recommendations and guidelines to reduce risk associated with various aspects of implementing battery technology in the aerospace industry. This document contains Part 2 - Volume I: Recommendations for Technical Requirements for Inclusion in Aerospace Battery Procurements of the program's operations

Gauging the Relationship between Contextual Growth and Structural Neglect

Population and land use out-migrations from urban to peripheral areas can result in non-functional, unmaintained historic structures which deteriorate to the point where removal is cheaper than removal – or demolition by neglect. The increasing rate of neglected historic structures is a growing concern. There is a need for research investigating connections between urban growth management and its effect on neglect. This paper applies Newman’s (2013) conceptual model of measuring neglect to Geographic Information Systems, comparing rates of neglect in historic Doylestown, Quakertown, and Bristol boroughs in Pennsylvania, USA utilizing different amounts of peripheral agricultural preservation. Comparisons are made examining descriptive statistics on existing conditions, a Polychoric correlation evaluating relationships between drivers of neglect, and a cross-comparative GIS spatial analysis. Results indicate as amounts of peripheral preserved farmlands increase, neglect can be lowered

Graphene Oxidation: Thickness Dependent Etching and Strong Chemical Doping

Patterned graphene shows substantial potential for applications in future molecular-scale integrated electronics. Environmental effects are a critical issue in a single layer material where every atom is on the surface. Especially intriguing is the variety of rich chemical interactions shown by molecular oxygen with aromatic molecules. We find that O2 etching kinetics vary strongly with the number of graphene layers in the sample. Three-layer-thick samples show etching similar to bulk natural graphite. Single-layer graphene reacts faster and shows random etch pits in contrast to natural graphite where nucleation occurs at point defects. In addition, basal plane oxygen species strongly hole dope graphene, with a Fermi level shift of ~0.5 eV. These oxygen species partially desorb in an Ar gas flow, or under irradiation by far UV light, and readsorb again in an O2 atmosphere at room temperature. This strongly doped graphene is very different than graphene oxide made by mineral acid attack.Comment: 15 pages, 5 figure

Transport and kinase activities of CbrA of Pseudomonas putida KT2440

The CbrA/CbrB system is a two-component signal transduction system known to participate in the regulation of the cellular carbon/nitrogen balance and to play a central role in carbon catabolite repression in Pseudomonas species. CbrA is composed of a domain with similarity to proteins of the solute/sodium symporter family (SLC5) and domains typically found in bacterial sensor kinases. Here, the functional properties of the sensor kinase CbrA and its domains are analyzed at the molecular level using the system of the soil bacterium P. putida KT2440 as a model. It is demonstrated that CbrA can bind and transport L-histidine. Transport is specific for L-histidine and probably driven by an electrochemical proton gradient. The kinase domain is not required for L-histidine uptake by the SLC5 domain of CbrA, and has no significant impact on transport kinetics. Furthermore, it is shown that the histidine kinase can autophosphorylate and transfer the phosphoryl group to the response regulator CbrB. The SLC5 domain is not essential for these activities but appears to modulate the autokinase activity. A phosphatase activity of CbrA is not detected. None of the activities is significantly affected by L-histidine. The results demonstrate that CbrA functions as a L-histidine transporter and sensor kinase

Complementary and Alternative Medicine Attitudes and Use in Caregivers of Patients with Lung Cancer

https://digitalcommons.psjhealth.org/summit_all/1071/thumbnail.jp