Framework for assessing causality in disease management programs: principles.

PubMed

Wilson, Thomas; MacDowell, Martin

2003-01-01

To credibly state that a disease management (DM) program "caused" a specific outcome it is required that metrics observed in the DM population be compared with metrics that would have been expected in the absence of a DM intervention. That requirement can be very difficult to achieve, and epidemiologists and others have developed guiding principles of causality by which credible estimates of DM impact can be made. This paper introduces those key principles. First, DM program metrics must be compared with metrics from a "reference population." This population should be "equivalent" to the DM intervention population on all factors that could independently impact the outcome. In addition, the metrics used in both groups should use the same defining criteria (ie, they must be "comparable" to each other). The degree to which these populations fulfill the "equivalent" assumption and metrics fulfill the "comparability" assumption should be stated. Second, when "equivalence" or "comparability" is not achieved, the DM managers should acknowledge this fact and, where possible, "control" for those factors that may impact the outcome(s). Finally, it is highly unlikely that one study will provide definitive proof of any specific DM program value for all time; thus, we strongly recommend that studies be ongoing, at multiple points in time, and at multiple sites, and, when observational study designs are employed, that more than one type of study design be utilized. Methodologically sophisticated studies that follow these "principles of causality" will greatly enhance the reputation of the important and growing efforts in DM.

Crystal growth and crystallography

NASA Technical Reports Server (NTRS)

Chernov, A. A.

1998-01-01

Selected topics that may be of interest for both crystal-structure and crystal-growth communities are overviewed. The growth of protein crystals, along with that of some other compounds, is one of the topics, and recent insights into related phenomena are considered as examples of applications of general principles. The relationship between crystal growth shape and structure is reviewed and an attempt to introduce semiquantitative characterization of binding for proteins is made. The concept of kinks for complex structures is briefly discussed. Even at sufficiently low supersaturations, the fluctuation of steps may not be sufficient to implement the Gibbs-Thomson law if the kink density is low enough. Subsurface ordering of liquids and growth of rough interfaces from melts is discussed. Crystals growing in microgravity from solution should be more perfect if they preferentially trap stress-inducing impurities, thus creating an impurity-depleted zone around themselves. Evidently, such a zone is developed only around the crystals growing in the absence of convection. Under terrestrial conditions, the self-purified depleted zone is destroyed by convection, the crystal traps more impurity and grows stressed. The stress relief causes mosaicity. In systems containing stress-inducing but poorly trapped impurities, the crystals grown in the absence of convection should be worse than those of their terrestrial counterparts.

Hippeastrum Is Hardly a Humdrum Classroom Plant.

ERIC Educational Resources Information Center

Hershey, David R.

2002-01-01

Introduces the plant Amaryllis, which is the common name for the Hippeastrum species. Describes how to grow and bloom Amaryllis in soil using hydroponics. Introduces experiments investigating the anatomy of the bulb, growing and elongation rates, the flower, and foliage. (Contains 21 references.) (YDS)

Applying Brain-Based Learning Principles to Athletic Training Education

ERIC Educational Resources Information Center

Craig, Debbie I.

2007-01-01

Objective: To present different concepts and techniques related to the application of brain-based learning principles to Athletic Training clinical education. Background: The body of knowledge concerning how our brains physically learn continues to grow. Brain-based learning principles, developed by numerous authors, offer advice on how to…

The Sabatier Principle Illustrated by Catalytic H[subscript2]O[subscript2] Decomposition on Metal Surfaces

ERIC Educational Resources Information Center

Laursen, Anders B.; Man, Isabela Costinela; Trinhammer, Ole L.; Rossmeisl, Jan; Dahl, Soren

2011-01-01

Heterogeneous catalysis is important in today's industry. Hence, it is imperative to introduce students to this field and its tools. A new way of introducing one of these tools, the Sabatier principle, via a laboratory exercise is presented. A volcano plot is constructed for the well-known heterogeneous H[subscript2]O[subscript2] catalytic…

Use of Case Studies to Introduce Undergraduate Students to Principles of Food Microbiology, Molecular Biology, and Epidemiology of Food-Borne Disease

ERIC Educational Resources Information Center

Ponder, Monica A.; Sumner, Susan

2009-01-01

Mock outbreaks of infectious disease offer the ability to introduce principles of food microbiology, ecology, and epidemiology to undergraduate students using an inquiry driven process. Students were presented with an epidemiological case study detailing patient history, clinical presentation, and foods recently consumed. The students then had to…

Successful Deployment of High Flow Nasal Cannula in a Peruvian Pediatric Intensive Care Unit Using Implementation Science-Lessons Learned.

PubMed

Nielsen, Katie R; Becerra, Rosario; Mallma, Gabriela; Tantaleán da Fieno, José

2018-01-01

Acute lower respiratory infections are the leading cause of death outside the neonatal period for children less than 5 years of age. Widespread availability of invasive and non-invasive mechanical ventilation in resource-rich settings has reduced mortality rates; however, these technologies are not always available in many low- and middle-income countries due to the high cost and trained personnel required to implement and sustain their use. High flow nasal cannula (HFNC) is a form of non-invasive respiratory support with growing evidence for use in pediatric respiratory failure. Its simple interface makes utilization in resource-limited settings appealing, although widespread implementation in these settings lags behind resource-rich settings. Implementation science is an emerging field dedicated to closing the know-do gap by incorporating evidence-based interventions into routine care, and its principles have guided the scaling up of many global health interventions. In 2016, we introduced HFNC use for respiratory failure in a pediatric intensive care unit in Lima, Peru using implementation science methodology. Here, we review our experience in the context of the principles of implementation science to serve as a guide for others considering HFNC implementation in resource-limited settings.

On the Market for Principles of Economics Textbooks: Innovation and Product Differentiation--A Response.

ERIC Educational Resources Information Center

Schiller, Bradley

1988-01-01

Responding to Stiglitz's article "On the Market for Principles of Economics Textbooks: Innovation and Product Differentiation," Schiller disputes the claim that there is growing dissatisfaction with textbooks, stating that the central issue in the debate is "how best to teach economic principles." Discusses the importance of…

What Feynman Could Not yet Use: The Generalised Hong-Ou-Mandel Experiment to Improve the QED Explanation of the Pauli Exclusion Principle

ERIC Educational Resources Information Center

Malgieri, Massimiliano; Tenni, Antonio; Onorato, Pasquale; De Ambrosis, Anna

2016-01-01

In this paper we present a reasoning line for introducing the Pauli exclusion principle in the context of an introductory course on quantum theory based on the sum over paths approach. We start from the argument originally introduced by Feynman in "QED: The Strange Theory of Light and Matter" and improve it by discussing with students…

Accounting Principles 30G. Interim Guide.

ERIC Educational Resources Information Center

Manitoba Dept. of Education and Training, Winnipeg.

This curriculum guide was developed for a senior-level introductory accounting course for students in high schools in Manitoba. The course introduces Canadian accounting principles and practices; it applies Generally Accepted Accounting Principles (GAAP) to introductory financial accounting. The guide includes the following components: (1) an…

Simple Activity Demonstrates Wind Energy Principles

ERIC Educational Resources Information Center

Roman, Harry T.

2012-01-01

Wind energy is an exciting and clean energy option often described as the fastest-growing energy system on the planet. With some simple materials, teachers can easily demonstrate its key principles in their classroom. (Contains 1 figure and 2 tables.)

Toledo Guiding Principles on Teaching about Religions and Beliefs in Public Schools: Executive Summary

ERIC Educational Resources Information Center

Santoro, Simona

2008-01-01

In this article, the author provides an executive summary of the Toledo guiding principles on teaching about religions and beliefs in public schools in Spain. The Toledo Guiding Principles have been prepared in order to contribute to an improved understanding of the world's increasing religious diversity and the growing presence of religion in the…

What Constitutes Science and Scientific Evidence: Roles of Null Hypothesis Testing

ERIC Educational Resources Information Center

Chang, Mark

2017-01-01

We briefly discuss the philosophical basis of science, causality, and scientific evidence, by introducing the hidden but most fundamental principle of science: the similarity principle. The principle's use in scientific discovery is illustrated with Simpson's paradox and other examples. In discussing the value of null hypothesis statistical…

Design Principles for the Information Architecture of a SMET Education Digital Library.

ERIC Educational Resources Information Center

Dong, Andy; Agogino, Alice M.

This implementation paper introduces principles for the information architecture of an educational digital library, principles that address the distinction between designing digital libraries for education and designing digital libraries for information retrieval in general. Design is a key element of any successful product. Good designers and…

Aviation dentistry: current concepts and practice.

PubMed

Zadik, Y

2009-01-10

With the growing number of air passengers, flight attendants, leisure pilots as well as military and airline pilots, dentists may increasingly encounter flight-related oral conditions requiring treatment. Moreover, dentists should prevent the creation of in-flight hazards when treating aircrew members. The aim of this article is to introduce the concepts of aviation (aerospace) medicine and dentistry. Data were gathered to cover the following issues: head and facial barotraumas (barotrauma-related headache, external otitic barotrauma, barosinusitis and barotitis-media), dental barotrauma (barometric pressure-related tooth injury), barodontalgia (barometric pressure-related oro-dental pain), and dental care for aircrews. Special considerations have to be made when planning restorative, endodontic, prosthodontic and surgical treatment to an aircrew patient. This article supplies the dental practitioner with some diagnostic tools as well as treatment guidelines. Principles of prevention, periodic examination, dental-related flight restriction (grounding) and dental documentation (for forensic purposes) are described as well.

"Notice of Violation of IEEE Publication Principles" Multiobjective Reinforcement Learning: A Comprehensive Overview.

PubMed

Liu, Chunming; Xu, Xin; Hu, Dewen

2013-04-29

Reinforcement learning is a powerful mechanism for enabling agents to learn in an unknown environment, and most reinforcement learning algorithms aim to maximize some numerical value, which represents only one long-term objective. However, multiple long-term objectives are exhibited in many real-world decision and control problems; therefore, recently, there has been growing interest in solving multiobjective reinforcement learning (MORL) problems with multiple conflicting objectives. The aim of this paper is to present a comprehensive overview of MORL. In this paper, the basic architecture, research topics, and naive solutions of MORL are introduced at first. Then, several representative MORL approaches and some important directions of recent research are reviewed. The relationships between MORL and other related research are also discussed, which include multiobjective optimization, hierarchical reinforcement learning, and multi-agent reinforcement learning. Finally, research challenges and open problems of MORL techniques are highlighted.

Balancing animal welfare and assisted reproduction: ethics of preclinical animal research for testing new reproductive technologies.

PubMed

Jans, Verna; Dondorp, Wybo; Goossens, Ellen; Mertes, Heidi; Pennings, Guido; de Wert, Guido

2018-02-07

In the field of medically assisted reproduction (MAR), there is a growing emphasis on the importance of introducing new assisted reproductive technologies (ARTs) only after thorough preclinical safety research, including the use of animal models. At the same time, there is international support for the three R's (replace, reduce, refine), and the European Union even aims at the full replacement of animals for research. The apparent tension between these two trends underlines the urgency of an explicit justification of the use of animals for the development and preclinical testing of new ARTs. Considering that the use of animals remains necessary for specific forms of ART research and taking account of different views on the moral importance of helping people to have a genetically related child, we argue that, in principle, the importance of safety research as part of responsible innovation outweighs the limited infringement of animal wellbeing involved in ART research.

The Principle of the Fermionic Projector: An Approach for Quantum Gravity?

NASA Astrophysics Data System (ADS)

Finster, Felix

In this short article we introduce the mathematical framework of the principle of the fermionic projector and set up a variational principle in discrete space-time. The underlying physical principles are discussed. We outline the connection to the continuum theory and state recent results. In the last two sections, we speculate on how it might be possible to describe quantum gravity within this framework.

Technology study of quantum remote sensing imaging

NASA Astrophysics Data System (ADS)

Bi, Siwen; Lin, Xuling; Yang, Song; Wu, Zhiqiang

2016-02-01

According to remote sensing science and technology development and application requirements, quantum remote sensing is proposed. First on the background of quantum remote sensing, quantum remote sensing theory, information mechanism, imaging experiments and prototype principle prototype research situation, related research at home and abroad are briefly introduced. Then we expounds compress operator of the quantum remote sensing radiation field and the basic principles of single-mode compression operator, quantum quantum light field of remote sensing image compression experiment preparation and optical imaging, the quantum remote sensing imaging principle prototype, Quantum remote sensing spaceborne active imaging technology is brought forward, mainly including quantum remote sensing spaceborne active imaging system composition and working principle, preparation and injection compression light active imaging device and quantum noise amplification device. Finally, the summary of quantum remote sensing research in the past 15 years work and future development are introduced.

The Principle of Equivalence: Demonstrations of Local Effective Vertical and Horizontal

ERIC Educational Resources Information Center

Munera, Hector A.

2010-01-01

It has been suggested that Einstein's principle of equivalence (PE) should be introduced at an early stage. This principle leads to the notion of local effective gravity, which in turn defines effective vertical and horizontal directions. Local effective gravity need not coincide with the direction of terrestrial gravity. This paper describes…

Introduction to Therapeutic and Counseling Principles: A Manual for Human Service Workers.

ERIC Educational Resources Information Center

Alaska State Dept. of Health and Social Services, Juneau. Div. of Mental Health and Developmental Disabilities.

This manual introduces some of the essential principles of counseling. It is geared toward the training and education of those who have not had significant prior counseling experiences and is not comprehensive. These topics are discussed, focusing on basic, introductory material: (1) general principles of human behavior and motivation including…

Profit--The Key. Principles of the American Free Enterprise System for Distributive Education Students. Student Guide.

ERIC Educational Resources Information Center

Hook, Sallie A.; And Others

In this distributive education student's guide on the free enterprise system, principles of the American economic system are introduced as they relate to marketing and distribution. This twenty-four-page document includes directions and an introduction to the material. Twelve "Principle Sheets" on various economic concepts contain…

The Conservation Principles and Kepler's Laws of Planetary Motion

ERIC Educational Resources Information Center

Motz, Lloyd

1975-01-01

Derives Kepler's three laws of planetary motion algebraically from conservation principles without introducing Newton's law of force explicitly. This procedure can be presented to students who have had no more than high school algebra. (Author)

Mechanical Tunneling in Solid Rock

DOT National Transportation Integrated Search

1979-12-01

This report introduces the principles of mchanized tunneling and provides detailed guidelines for practical application. The subject is introduced with a detailed review of technical aspects and terms relating to mchanized tunneling. It discusses the...

Efficient Predictions of Excited State for Nanomaterials Using Aces 3 and 4

DTIC Science & Technology

2017-12-20

by first-principle methods in the software package ACES by using large parallel computers, growing tothe exascale. 15. SUBJECT TERMS Computer...modeling, excited states, optical properties, structure, stability, activation barriers first principle methods , parallel computing 16. SECURITY...2 Progress with new density functional methods

Marketing Principles as Applied to the Corporate Information Center.

ERIC Educational Resources Information Center

Brown, Suzan A.

Marketing principles, as applied by major businesses around the world, can also be used by information professionals to grow and expand their presence within their own organization. This paper focuses on parallels between marketing in the industrial/research arena, and the needs of information professionals to expand business from existing…

Educational Ecosystems: A Trend in Urban Educational Innovation

ERIC Educational Resources Information Center

Abdul-Jabbar, Mustafa; Kurshan, Barbara

2015-01-01

There is an increasing reliance on market principles and values in the education space, particularly in urban contexts, accompanied by a growing diversification of educational service providers. Due in part to increased interactivity amongst constituents in this growing assembly of providers and actors, educational innovation ecosystem…

Curricular Implications of Virtual World Technology: A Review of Business Applications

ERIC Educational Resources Information Center

Cyphert, Dale; Wurtz, M. Susan; Duclos, Leslie K.

2013-01-01

As business organizations grow increasingly virtual, traditional principles of organizational communication require examination and modification. This article considers the curricular implications of the growing business uses of virtual world technology through three different lenses--students as employee-users, students as strategic designers and…

Communicating with the public about risk

DOE Office of Scientific and Technical Information (OSTI.GOV)

Wade, C R; Molony, S T; Durbin, M E

1992-01-01

Risk communication is a growing specialty field in communication that draws from well-established principles of sociology and psychology. It is a new way to communicate with potentially hostile audiences about sensitive environmental, safety, and health issues they face. This paper explains the most important principles of risk communication and discusses audience analyses, perceptions of risk (outrage factors), and risk comparisons. These principles are applied to a risk communication issue in Malhuevo, a fictitious Arizona community.

Growing Great Minds: Seizing the Opportunity

ERIC Educational Resources Information Center

Grant, Carl A.

2015-01-01

Teachers must seize the opportunity to grow great minds. Contextualizing the argument in the writing of renowned poets, noted educators, and distinguished moral heroes whose life's work was dedicated to the principles of democracy, this article reminds practicing teachers in this challenging moment that "You are braver than you believe,…

(Re)constructing Ideals of Multicultural Education through "Grow Your Own Teachers"

ERIC Educational Resources Information Center

Madda, Christina L.; Schultz, Brian D.

2009-01-01

Reflecting on the current status of multicultural education in higher education institutions, we examine "Grow Your Own Teachers," a progressive, innovative program that not only embodies and enacts major principles of multicultural education, but also represents an ongoing effort to redefine and revitalize multicultural education within…

Evolution of fast-growing and more resistant phenotypes in introduced common mullein (Verbascum thapsus)

USDA-ARS?s Scientific Manuscript database

Species introduced into areas outside of their native range have to adapt to new biotic and abiotic conditions to be able to establish. Some of these introduced species are also more successful in their introduced than their native range, with increased growth and fecundity. We used a common garden ...

Introduction to economic assessment.

PubMed

McMahon, Ann; Sin, Chih Hoong

2013-11-01

This is the first in a series of four continuing professional development articles that explain some of the principles of economic assessment and describe the most commonly cited approaches. The series aims to enable readers to critically examine economic assessments in the context of nurse-led service innovation. It introduces a tried-and-tested methodology, with associated tools and templates, used to conduct economic assessments in nursing. In this article, the principles of economic assessment are introduced and two case studies of nurse-led innovation are used to illustrate how they are applied in practice.

Two prospective Li-based half-Heusler alloys for spintronic applications based on structural stability and spin–orbit effect

DOE Office of Scientific and Technical Information (OSTI.GOV)

Zhang, R. L.; Damewood, L.; Zeng, Y. J.

To search for half-metallic materials for spintronic applications, instead of using an expensive trial-and-error experimental scheme, it is more efficient to use first-principles calculations to design materials first, and then grow them. In particular, using a priori information of the structural stability and the effect of the spin–orbit interaction (SOI) enables experimentalists to focus on favorable properties that make growing half-metals easier. We suggest that using acoustic phonon spectra is the best way to address the stability of promising half-metallic materials. Additionally, by carrying out accurate first-principles calculations, we propose two criteria for neglecting the SOI so the half-metallicity persists.more » As a result, based on the mechanical stability and the negligible SOI, we identified two half-metals, β-LiCrAs and β-LiMnSi, as promising half-Heusler alloys worth growing.« less

Two prospective Li-based half-Heusler alloys for spintronic applications based on structural stability and spin–orbit effect

DOE PAGES

Zhang, R. L.; Damewood, L.; Zeng, Y. J.; ...

2017-07-07

To search for half-metallic materials for spintronic applications, instead of using an expensive trial-and-error experimental scheme, it is more efficient to use first-principles calculations to design materials first, and then grow them. In particular, using a priori information of the structural stability and the effect of the spin–orbit interaction (SOI) enables experimentalists to focus on favorable properties that make growing half-metals easier. We suggest that using acoustic phonon spectra is the best way to address the stability of promising half-metallic materials. Additionally, by carrying out accurate first-principles calculations, we propose two criteria for neglecting the SOI so the half-metallicity persists.more » As a result, based on the mechanical stability and the negligible SOI, we identified two half-metals, β-LiCrAs and β-LiMnSi, as promising half-Heusler alloys worth growing.« less

Water System Adaptation To Hydrological Changes: Module 7, Adaptation Principles and Considerations

EPA Science Inventory

This course will introduce students to the fundamental principles of water system adaptation to hydrological changes, with emphasis on data analysis and interpretation, technical planning, and computational modeling. Starting with real-world scenarios and adaptation needs, the co...

A finite-state, finite-memory minimum principle, part 2

NASA Technical Reports Server (NTRS)

Sandell, N. R., Jr.; Athans, M.

1975-01-01

In part 1 of this paper, a minimum principle was found for the finite-state, finite-memory (FSFM) stochastic control problem. In part 2, conditions for the sufficiency of the minimum principle are stated in terms of the informational properties of the problem. This is accomplished by introducing the notion of a signaling strategy. Then a min-H algorithm based on the FSFM minimum principle is presented. This algorithm converges, after a finite number of steps, to a person - by - person extremal solution.

"We need our own food, to grow our own veggies…" Remote Aboriginal food gardens in the Top End of Australia's Northern Territory.

PubMed

Hume, Andrew; O'Dea, Kerin; Brimblecombe, Julie

2013-10-01

Remote Aboriginal community gardens (gardens) frequently operate below their full potential. A set of gardening sustainability principles may improve their planning, operation and long-term sustainability. This paper aims to document the principles of sustainability of non-profit remote Aboriginal community gardens in the Top End of the Northern Territory. Throughout 2011, gardens in the Top End of the Northern Territory were visited. Interviews and observational data were used to explore the principles of garden sustainability with participants. Subsequent iterative thematic analysis informed development of a set of gardening sustainability principles. Principles of sustainability included effective garden planning; community autonomy, consultation and engagement; growing community vetted crops; employing long-term, effective, culturally sensitive managers; long-term, transparent funding organisations and cycles; garden integration into existing food supply chains; culturally appropriate employment arrangements; and physical aspects of successful gardening. This work uniquely consults gardeners, managers and Aboriginal and non-Aboriginal people of both genders in the largest reported study of its type, resulting in new and expanded findings, particularly including new social factors for gardening success. Expanding the understanding of what makes gardens work to include the important social factors identified here may have merit. © 2013 The Authors. ANZJPH © 2013 Public Health Association of Australia.

Teaching Principles of Management through Experiential and Service Learning

ERIC Educational Resources Information Center

Furutan, Omid

2014-01-01

Management faculties often use cases, simulations, and research projects to achieve learning objectives in the Principles of Management class. This class typically aims to introduce students to the topics of "planning, organizing, coordinating, staffing, directing, budgeting, controlling, and evaluating functions of management; leadership…

Using "First Principles of Instruction" to Design Secondary School Mathematics Flipped Classroom: The Findings of Two Exploratory Studies

ERIC Educational Resources Information Center

Lo, Chung Kwan; Hew, Khe Foon

2017-01-01

Flipping the classroom is a current pedagogical innovation in many schools and universities. Although interest in flipped classroom (or Inverted Classroom) continues to grow, its implementation so far has been driven more by teachers' intuitive beliefs, rather than empirically-based principles. Many studies merely replace in-class instructions…

"Languagizing" Their World: Why Talking, Reading, and Singing Are So Important

ERIC Educational Resources Information Center

Hirsh-Pasek, Kathryn; Golinkoff, Roberta Michnick

2018-01-01

Language is the single best predictor of later success in school and beyond. Using new findings in the science of learning, this article outlines 6 basic principles that will help parents and caregivers interact with children in ways that grow important language skills. Creating environments that nurture these principles gives every child a chance…

And now, from the company that brought you the seven-eyed trout: Risk communication in action

DOE Office of Scientific and Technical Information (OSTI.GOV)

Durbin, M.E.; Klein, S.H.; Molony, S.T.

1992-01-01

Risk communication is a growing specialty field in communication that draws from well-established principles of sociology and psychology. It is a way to communicate with potentially hostile audiences about sensitive environmental, safety, and health issues they face. This paper explains the most important principles of risk communication and discusses audience analyses, perceptions of risk (outrage factors), and risk comparisons. These principles are applied to a risk communication issue in a fictitious community.

The principle of superposition and its application in ground-water hydraulics

USGS Publications Warehouse

Reilly, Thomas E.; Franke, O. Lehn; Bennett, Gordon D.

1987-01-01

The principle of superposition, a powerful mathematical technique for analyzing certain types of complex problems in many areas of science and technology, has important applications in ground-water hydraulics and modeling of ground-water systems. The principle of superposition states that problem solutions can be added together to obtain composite solutions. This principle applies to linear systems governed by linear differential equations. This report introduces the principle of superposition as it applies to ground-water hydrology and provides background information, discussion, illustrative problems with solutions, and problems to be solved by the reader.

The principle of superposition and its application in ground-water hydraulics

USGS Publications Warehouse

Reilly, T.E.; Franke, O.L.; Bennett, G.D.

1984-01-01

The principle of superposition, a powerful methematical technique for analyzing certain types of complex problems in many areas of science and technology, has important application in ground-water hydraulics and modeling of ground-water systems. The principle of superposition states that solutions to individual problems can be added together to obtain solutions to complex problems. This principle applies to linear systems governed by linear differential equations. This report introduces the principle of superposition as it applies to groundwater hydrology and provides background information, discussion, illustrative problems with solutions, and problems to be solved by the reader. (USGS)

Physical principles for DNA tile self-assembly.

PubMed

Evans, Constantine G; Winfree, Erik

2017-06-19

DNA tiles provide a promising technique for assembling structures with nanoscale resolution through self-assembly by basic interactions rather than top-down assembly of individual structures. Tile systems can be programmed to grow based on logical rules, allowing for a small number of tile types to assemble large, complex assemblies that can retain nanoscale resolution. Such algorithmic systems can even assemble different structures using the same tiles, based on inputs that seed the growth. While programming and theoretical analysis of tile self-assembly often makes use of abstract logical models of growth, experimentally implemented systems are governed by nanoscale physical processes that can lead to very different behavior, more accurately modeled by taking into account the thermodynamics and kinetics of tile attachment and detachment in solution. This review discusses the relationships between more abstract and more physically realistic tile assembly models. A central concern is how consideration of model differences enables the design of tile systems that robustly exhibit the desired abstract behavior in realistic physical models and in experimental implementations. Conversely, we identify situations where self-assembly in abstract models can not be well-approximated by physically realistic models, putting constraints on physical relevance of the abstract models. To facilitate the discussion, we introduce a unified model of tile self-assembly that clarifies the relationships between several well-studied models in the literature. Throughout, we highlight open questions regarding the physical principles for DNA tile self-assembly.

Photo-excited charge carriers suppress sub-terahertz phonon mode in silicon at room temperature

DOE PAGES

Liao, Bolin; Maznev, A. A.; Nelson, Keith A.; ...

2016-10-12

There is a growing interest in the mode-by-mode understanding of electron and phonon transport for improving energy conversion technologies, such as thermoelectrics and photovoltaics. Whereas remarkable progress has been made in probing phonon–phonon interactions, it has been a challenge to directly measure electron–phonon interactions at the single-mode level, especially their effect on phonon transport above cryogenic temperatures. Here in this paper, we use three-pulse photoacoustic spectroscopy to investigate the damping of a single sub-terahertz coherent phonon mode by free charge carriers in silicon at room temperature. Building on conventional pump–probe photoacoustic spectroscopy, we introduce an additional laser pulse to opticallymore » generate charge carriers, and carefully design temporal sequence of the three pulses to unambiguously quantify the scattering rate of a single-phonon mode due to the electron–phonon interaction. Our results confirm predictions from first-principles simulations and indicate the importance of the often-neglected effect of electron–phonon interaction on phonon transport in doped semiconductors.« less

A mass spectrometry primer for mass spectrometry imaging

PubMed Central

Rubakhin, Stanislav S.; Sweedler, Jonathan V.

2011-01-01

Mass spectrometry imaging (MSI), a rapidly growing subfield of chemical imaging, employs mass spectrometry (MS) technologies to create single- and multi-dimensional localization maps for a variety of atoms and molecules. Complimentary to other imaging approaches, MSI provides high chemical specificity and broad analyte coverage. This powerful analytical toolset is capable of measuring the distribution of many classes of inorganics, metabolites, proteins and pharmaceuticals in chemically and structurally complex biological specimens in vivo, in vitro, and in situ. The MSI approaches highlighted in this Methods in Molecular Biology volume provide flexibility of detection, characterization, and identification of multiple known and unknown analytes. The goal of this chapter is to introduce investigators who may be unfamiliar with MS to the basic principles of the mass spectrometric approaches as used in MSI. In addition to guidelines for choosing the most suitable MSI method for specific investigations, cross-references are provided to the chapters in this volume that describe the appropriate experimental protocols. PMID:20680583

A New View of Radiation-Induced Cancer: Integrating Short- and Long-Term Processes. Part II: Second Cancer Risk Estimation

NASA Technical Reports Server (NTRS)

Shuryak, Igor; Brenner, David J.; Hahnfeldt, Philip; Hlatky, Lynn; Sachs, Rainer K.

2009-01-01

As the number of cancer survivors grows, prediction of radiotherapy-induced second cancer risks becomes increasingly important. Because the latency period for solid tumors is long, the risks of recently introduced radiotherapy protocols are not yet directly measurable. In the accompanying article, we presented a new biologically based mathematical model, which, in principle, can estimate second cancer risks for any protocol. The novelty of the model is that it integrates, into a single formalism, mechanistic analyses of pre-malignant cell dynamics on two different time scales: short-term during radiotherapy and recovery; long-term during the entire life span. Here, we apply the model to nine solid cancer types (stomach, lung, colon, rectal, pancreatic, bladder, breast, central nervous system, and thyroid) using data on radiotherapy-induced second malignancies, on Japanese atomic bomb survivors, and on background US cancer incidence. Potentially, the model can be incorporated into radiotherapy treatment planning algorithms, adding second cancer risk as an optimization criterion.

Germany's long-term-care insurance: putting a social insurance model into practice.

PubMed

Geraedts, M; Heller, G V; Harrington, C A

2000-01-01

A growing population of elderly has intensified the demand for long-term care (LTC) services. In response to the mounting need, Germany put into effect a LTC Insurance Act in 1995 that introduced mandatory public or private LTC insurance for the entire population of 82 million. The program was based on the organizational principles that define the German social insurance system. Those individuals in the public system and their employers each pay contributions equal to 0.85 percent of each employee's gross wages or salary. Ten percent of the population with the highest incomes have chosen the option of purchasing private long term care insurance. Provisions were made for uniform eligibility criteria, benefits based on level of care needs, cost containment, and quality assurance. Over the first four years of its operation, the system has proved financially sound and has expanded access to organized LTC services. The German system thus may serve as an example for other countries that are planning to initiate social LTC insurance systems in other nations.

Philipp Bozzini (1773-1809): The earliest description of endoscopy.

PubMed

Ramai, Daryl; Zakhia, Karl; Etienne, Denzil; Reddy, Madhavi

2018-05-01

The widespread use of endoscopy in today's clinical arena underscores its utility and growing significance within the field of medicine. Primitive forms of endoscopy have existed for hundreds of years, but it was not until the early 19th century that Dr Philipp Bozzini invented an endoscope that would form the basis of modern endoscopy. Born into an influential Italian family, Bozzini practiced medicine in a time and place of conflict and political unrest. His passion, ingenuity, and important social connections allowed him to create and introduce to the medical profession the Lichtleiter (light-conductor), which overcame two key issues plaguing endoscopy: inadequate lighting and poor penetration. A combination of professional rivalry and his premature passing stifled enthusiasm and further work on the Lichtleiter, but its value would not be lost forever. The advancements in the field of endoscopy that have come since the time of the Lichtleiter all build upon the principles of Bozzini, who became widely acknowledged as the father of modern endoscopy.

A new view of radiation-induced cancer: integrating short- and long-term processes. Part II: second cancer risk estimation.

PubMed

Shuryak, Igor; Hahnfeldt, Philip; Hlatky, Lynn; Sachs, Rainer K; Brenner, David J

2009-08-01

As the number of cancer survivors grows, prediction of radiotherapy-induced second cancer risks becomes increasingly important. Because the latency period for solid tumors is long, the risks of recently introduced radiotherapy protocols are not yet directly measurable. In the accompanying article, we presented a new biologically based mathematical model, which, in principle, can estimate second cancer risks for any protocol. The novelty of the model is that it integrates, into a single formalism, mechanistic analyses of pre-malignant cell dynamics on two different time scales: short-term during radiotherapy and recovery; long-term during the entire life span. Here, we apply the model to nine solid cancer types (stomach, lung, colon, rectal, pancreatic, bladder, breast, central nervous system, and thyroid) using data on radiotherapy-induced second malignancies, on Japanese atomic bomb survivors, and on background US cancer incidence. Potentially, the model can be incorporated into radiotherapy treatment planning algorithms, adding second cancer risk as an optimization criterion.

Physical properties of biological entities: an introduction to the ontology of physics for biology.

PubMed

Cook, Daniel L; Bookstein, Fred L; Gennari, John H

2011-01-01

As biomedical investigators strive to integrate data and analyses across spatiotemporal scales and biomedical domains, they have recognized the benefits of formalizing languages and terminologies via computational ontologies. Although ontologies for biological entities-molecules, cells, organs-are well-established, there are no principled ontologies of physical properties-energies, volumes, flow rates-of those entities. In this paper, we introduce the Ontology of Physics for Biology (OPB), a reference ontology of classical physics designed for annotating biophysical content of growing repositories of biomedical datasets and analytical models. The OPB's semantic framework, traceable to James Clerk Maxwell, encompasses modern theories of system dynamics and thermodynamics, and is implemented as a computational ontology that references available upper ontologies. In this paper we focus on the OPB classes that are designed for annotating physical properties encoded in biomedical datasets and computational models, and we discuss how the OPB framework will facilitate biomedical knowledge integration. © 2011 Cook et al.

Approaches to Foster Transfer of Formal Principles: Which Route to Take?

PubMed

Schalk, Lennart; Saalbach, Henrik; Stern, Elsbeth

2016-01-01

Enabling learners to transfer knowledge about formal principles to new problems is a major aim of science and mathematics education, which, however, is notoriously difficult to reach. Previous research advocates different approaches of how to introduce principles to foster the transfer of knowledge about formal principles. One approach suggests teaching a generic formalism of the principles. Another approach suggests presenting (at least) two concrete cases instantiating the principle. A third approach suggests presenting a generic formalism accompanied by a case. As yet, though, empirical results regarding the transfer potential of these approaches are mixed and difficult to integrate as the three approaches have rarely been tested competitively. Furthermore, the approaches have been evaluated in relation to different control conditions, and they have been assessed using varying transfer measures. In the present experiment, we introduced undergraduates to the formal principles of propositional logic with the aim to systematically compare the transfer potential of the different approaches in relation to each other and to a common control condition by using various learning and transfer tasks. Results indicate that all approaches supported successful learning and transfer of the principles, but also caused systematic differences in the magnitude of transfer. Results indicate that the combination of a generic formalism with a case was surprisingly unsuccessful while learners who compared two cases outperformed the control condition. We discuss how the simultaneous assessment of the different approaches allows to more precisely capture the underlying learning mechanisms and to advance theory on how these mechanisms contribute to transfer performance.

Fermion systems in discrete space-time

NASA Astrophysics Data System (ADS)

Finster, Felix

2007-05-01

Fermion systems in discrete space-time are introduced as a model for physics on the Planck scale. We set up a variational principle which describes a non-local interaction of all fermions. This variational principle is symmetric under permutations of the discrete space-time points. We explain how for minimizers of the variational principle, the fermions spontaneously break this permutation symmetry and induce on space-time a discrete causal structure.

TRAINING IN INDUSTRY--THE MANAGEMENT OF LEARNING.

ERIC Educational Resources Information Center

BASS, BERNARD M.; VAUGHAN, JAMES A.

THE PRINCIPLES OF LEARNING BEHAVIOR DERIVED THROUGH LABORATORY STUDY CAN BE EXTENDED TO EXPLAIN MUCH OF THE COMPLEX LEARNING REQUIRED IN INDUSTRIAL TRAINING PROGRAMS. A REVIEW OF THE BASIC PRINCIPLES OF HUMAN LEARNING INTRODUCES FOUR BASIC CONCEPTS--DRIVE, STIMULUS, RESPONSE, AND REINFORCER--AND DISCUSSES CLASSICAL AND INSTRUMENTAL CONDITIONING…

Introducing Plain Language Principles to Business Communication Students

ERIC Educational Resources Information Center

Greer, Rachelle R.

2012-01-01

In response to current federal mandates requiring selected businesses and government agencies to use plain language (PL) when reporting information to the public, this article advocates the introduction of PL principles into current business communication curricula. Despite recent PL mandates and advances, many current business textbooks and…

Fostering Family-Teacher Partnerships: Principles in Practice

ERIC Educational Resources Information Center

Knight-McKenna, Mary; Hollingsworth, Heidi L.

2016-01-01

Twenty-first century educators of young children need skills and dispositions for building partnerships with the families of all their students. Educators worldwide frequently teach children from families whose backgrounds, including socioeconomic status and home language, are different from their own. This article introduces 12 principles for…

Managing a Standards-Based Classroom

ERIC Educational Resources Information Center

Edwards, Susan

2011-01-01

Many preservice teachers are introduced to NCTM's "Principles and Standards for School Mathematics" (2000) and practices that support those Standards as part of their teacher education programs. They often appear to accept the underlying principles, and many intend to implement this type of instruction in their own classrooms. Unfortunately, as…

[Advance in imaging spectropolarimeter].

PubMed

Wang, Xin-quan; Xiangli, Bin; Huang, Min; Hu, Liang; Zhou, Jin-song; Jing, Juan-juan

2011-07-01

Imaging spectropolarimeter (ISP) is a type of novel photoelectric sensor which integrated the functions of imaging, spectrometry and polarimetry. In the present paper, the concept of the ISP is introduced, and the advances in ISP at home and abroad in recent years is reviewed. The principles of ISPs based on novel devices, such as acousto-optic tunable filter (AOTF) and liquid crystal tunable filter (LCTF), are illustrated. In addition, the principles of ISPs developed by adding polarized components to the dispersing-type imaging spectrometer, spatially modulated Fourier transform imaging spectrometer, and computer tomography imaging spectrometer are introduced. Moreover, the trends of ISP are discussed too.

European health systems and the internal market: reshaping ideology?

PubMed

da Costa Leite Borges, Danielle

2011-12-01

Departing from theories of distributive justice and their relation with the distribution of health care within society, especially egalitarianism and libertarianism, this paper aims at demonstrating that the approach taken by the European Court of Justice regarding the application of the Internal Market principles (or the market freedoms) to the field of health care services has introduced new values which are more concerned with a libertarian view of health care. Moreover, the paper also addresses the question of how these new values introduced by the Court may affect common principles of European health systems, such as equity and accessibility.

Growing What Works: Lessons Learned Replicating Promising Practices for Latino Student Success

ERIC Educational Resources Information Center

Santiago, Deborah A.; Lopez, Estela

2013-01-01

How does the country accelerate Latino student success in higher education? The U.S. has to find programs and strategies that improve the success of Latino students, and then replicate or scale up those programs and strategies to serve more students. Those are the basic principles behind "Excelencia" in Education's Growing What Works (GWW)…

Classrooms with Growing Room. Playing Smart: Enrichment in the Home. Lessons without Limits.

ERIC Educational Resources Information Center

Kanevsky, Lannie

Three papers by the same author address: (1) educational methods for gifted children in the regular classroom; (2) principles of enriching the gifted child's development in the home; and (3) modifying lessons to optimally challenge gifted students. The first paper is titled, "Classrooms with Growing Room." It stresses the need for gifted children…

Introducing Conservation of Momentum

ERIC Educational Resources Information Center

Brunt, Marjorie; Brunt, Geoff

2013-01-01

The teaching of the principle of conservation of linear momentum is considered (ages 15 + ). From the principle, the momenta of two masses in an isolated system are considered. Sketch graphs of the momenta make Newton's laws appear obvious. Examples using different collision conditions are considered. Conservation of momentum is considered…

Applying APA's Learner-Centered Principles to School-Based Group Counseling.

ERIC Educational Resources Information Center

Stroh, Heather R.; Sink, Christopher A.

2002-01-01

This article introduces the American Psychological Association's learner-centered principles and provides a brief rationale for infusing them into comprehensive guidance and counseling programs. Using small group counseling as an illustration, explains how counselors can apply a learner-centered approach to their work. (Contains 43 references.)…

Using marketing principles to promote nursing products and services.

PubMed

Siegel, M

1996-01-01

In this article, the author identifies basic marketing principles that can guide the introduction of new or existing products and services. To illustrate the elements of marketing, an example is used to describe how a new closed-circuit patient education channel was introduced at a midwestern teaching hospital.

Water System Adaptation to Hydrological Changes: Module 10, Basic Principles of Incorporating Adaptation Science into Hydrologic Planning and Design

EPA Science Inventory

This course will introduce students to the fundamental principles of water system adaptation to hydrological changes, with emphasis on data analysis and interpretation, technical planning, and computational modeling. Starting with real-world scenarios and adaptation needs, the co...

Practicing Professional Communication Principles by Creating Public Service Announcements

ERIC Educational Resources Information Center

Fredrick, Terri

2008-01-01

A primary goal of most introductory business and technical communication courses is to introduce students to the idea that the professional communication most of them will engage in is different from the writing they do for academic purposes. This overall idea covers several principles concerning professional writing. However, implementing active…

The Art of Evaluation: A Handbook for Educators and Trainers.

ERIC Educational Resources Information Center

Fenwick, Tara J.; Parsons, Jim

This book introduces adult educators and trainers to the principles and techniques of learner evaluation in the various contexts of adult education. The following are among the topics discussed: (1) the purposes of evaluation (the importance of authentic evaluation; principles of evaluation; traps in evaluation); (2) evaluating one's philosophy…

Drawing on the Principles of SoTL to Illuminate a Path Forward for the Scholarship of Educational Development

ERIC Educational Resources Information Center

Kenny, Natasha; Popovic, Celia; McSweeney, Jill; Knorr, Kris; Hoessler, Carolyn; Hall, Shirley; Fujita, Nobuko; El Khoury, Eliana

2017-01-01

There has been growing discourse related to the importance of the scholarship of educational development (SoED), but less discussion related to clearly defining principles for guiding engagement in SoED or contextualizing SoED within literature related to the scholarship of teaching and learning (SoTL). Expanding upon Felten's (2013) principles…

Approaches to Foster Transfer of Formal Principles: Which Route to Take?

PubMed Central

Schalk, Lennart; Saalbach, Henrik; Stern, Elsbeth

2016-01-01

Enabling learners to transfer knowledge about formal principles to new problems is a major aim of science and mathematics education, which, however, is notoriously difficult to reach. Previous research advocates different approaches of how to introduce principles to foster the transfer of knowledge about formal principles. One approach suggests teaching a generic formalism of the principles. Another approach suggests presenting (at least) two concrete cases instantiating the principle. A third approach suggests presenting a generic formalism accompanied by a case. As yet, though, empirical results regarding the transfer potential of these approaches are mixed and difficult to integrate as the three approaches have rarely been tested competitively. Furthermore, the approaches have been evaluated in relation to different control conditions, and they have been assessed using varying transfer measures. In the present experiment, we introduced undergraduates to the formal principles of propositional logic with the aim to systematically compare the transfer potential of the different approaches in relation to each other and to a common control condition by using various learning and transfer tasks. Results indicate that all approaches supported successful learning and transfer of the principles, but also caused systematic differences in the magnitude of transfer. Results indicate that the combination of a generic formalism with a case was surprisingly unsuccessful while learners who compared two cases outperformed the control condition. We discuss how the simultaneous assessment of the different approaches allows to more precisely capture the underlying learning mechanisms and to advance theory on how these mechanisms contribute to transfer performance. PMID:26871902

Introducing an Equal Rights Framework for Older Persons in Residential Care

PubMed Central

Jönson, Håkan; Harnett, Tove

2016-01-01

This article reconceptualizes residential care for older persons by introducing a framework developed from a rights-based principle of disability policies: the normalization principle. This principle is part of the social model and states that society should make available for people who have impairments living conditions that are as close as possible to those of “others.” Using the framework on the case of eldercare in Sweden shows that although disability policies have used people without impairments as a comparative (external) reference group for claiming rights, eldercare policies use internal reference groups, basing comparisons on other care users. The article highlights the need for external comparisons in eldercare and suggests that the third age, which so far has been a normative reference group for older people, could be a comparative reference group when older persons in need of care claim rights to equal conditions. PMID:26035884

Principles of Celestial Navigation: An Online Resource for Introducing Practical Astronomy to the Public

NASA Astrophysics Data System (ADS)

Urban, Sean E.

2015-08-01

Astronomy is often called a "gateway" science because it inspires appreciation and awe among children and non-scientists. Applied astronomy, with practical, real-world applications, can entice even the most utilitarian people to take notice and learn about the subject. Traditional celestial navigation is an astronomy topic that captures the attention of the public. The U.S. Naval Observatory has led the development of a publicly available online celestial navigation educational module titled, "Principles of Celestial Navigation". It can be used world-wide to introduce people to astronomy. This poster describes some of the aspects of this teaching module.

Limitations and Functions: Four Examples of Integrating Thermodynamics

ERIC Educational Resources Information Center

Chang, Wheijen

2011-01-01

Physics students are usually unaware of the limitations and functions of related principles, and they tend to adopt "hot formulas" inappropriately. This paper introduces four real-life examples for bridging five principles, from fluids to thermodynamics, including (1) buoyant force, (2) thermal expansion, (3) the ideal-gas law, (4) the 1st law,…

Presenting Science to the Public. The Professional Writing Series.

ERIC Educational Resources Information Center

Gastel, Barbara

This book introduces scientists, health professionals, and engineers to principles of communicating with the public and to practical aspects of dealing with the press. Part I focuses on the advantages, principles, and problems of communicating with the public. Part II discusses the nature of science reporting and offers advice for presenting…

EcoWellness & Guiding Principles for the Ethical Integration of Nature into Counseling

ERIC Educational Resources Information Center

Reese, Ryan F.

2016-01-01

Connection with nature impacts human wellness, yet few resources currently exist in the international literature to help guide clinicians in the ethical integration of EcoWellness into therapeutic processes. Ethical principles for EcoWellness practice are introduced and linked to applicable portions of the American Counseling Association's (2014)…

The Value of the Operational Principle in Instructional Design

ERIC Educational Resources Information Center

Gibbons, Andrew S.

2009-01-01

Formal design studies are increasing our insight into design processes, including those of instructional design. Lessons are being learned from other design fields, and new techniques and concepts can be imported as they are demonstrated effective. The purpose of this article is to introduce a design concept--the "operational principle"--for…

DOE Office of Scientific and Technical Information (OSTI.GOV)

Reister, D.B.

This paper uses the Pontryagin maximum principle to find time optimal paths for a constant speed unicycle. The time optimal paths consist of sequences of arcs of circles and straight lines. The maximum principle introduced concepts (dual variables, bang-bang solutions, singular solutions, and transversality conditions) that provide important insight into the nature of the time optimal paths. 10 refs., 6 figs.

Integrating Sustainable Development in Chemical Engineering Education: The Application of an Environmental Management System

ERIC Educational Resources Information Center

Montanes, M. T.; Palomares, A. E.; Sanchez-Tovar, R.

2012-01-01

The principles of sustainable development have been integrated in chemical engineering education by means of an environmental management system. These principles have been introduced in the teaching laboratories where students perform their practical classes. In this paper, the implementation of the environmental management system, the problems…

Career Education and the Marshmallow Principle.

ERIC Educational Resources Information Center

Hoyt, Kenneth B.

The "Marshmallow Principle" introduced in this paper is stated as follows: "External pressure exerted on an organization to change its basic structure will, for as long as that pressure is applied, cause the organization's structure to bend and assume a new shape. Once the pressure is removed, the organization will reassume its original shape.…

Dynamic reasoning in a knowledge-based system

NASA Technical Reports Server (NTRS)

Rao, Anand S.; Foo, Norman Y.

1988-01-01

Any space based system, whether it is a robot arm assembling parts in space or an onboard system monitoring the space station, has to react to changes which cannot be foreseen. As a result, apart from having domain-specific knowledge as in current expert systems, a space based AI system should also have general principles of change. This paper presents a modal logic which can not only represent change but also reason with it. Three primitive operations, expansion, contraction and revision are introduced and axioms which specify how the knowledge base should change when the external world changes are also specified. Accordingly the notion of dynamic reasoning is introduced, which unlike the existing forms of reasoning, provide general principles of change. Dynamic reasoning is based on two main principles, namely minimize change and maximize coherence. A possible-world semantics which incorporates the above two principles is also discussed. The paper concludes by discussing how the dynamic reasoning system can be used to specify actions and hence form an integral part of an autonomous reasoning and planning system.

GROWING SEEDS, TEACHER'S GUIDE.

ERIC Educational Resources Information Center

Elementary Science Study, Newton, MA.

THIS TEACHER'S GUIDE IS DESIGNED FOR USE WITH AN ELEMENTARY SCIENCE STUDY UNIT, "GROWING SEEDS," IN WHICH SUCH BASIC SCIENCE SKILLS AND PROCESSES AS MEASUREMENT, OBSERVATION, AND HYPOTHESIS FORMATION ARE INTRODUCED THROUGH STUDENT ACTIVITIES INVOLVING SEEDS, GERMINATION, AND SEEDLING GROWTH. THE MATERIALS WERE DEVELOPED FOR USE IN…

The ethics of public policy RCTs: The principle of policy equipoise.

PubMed

MacKay, Douglas

2018-01-01

In this article, I ask whether a principle analogous to the principle of clinical equipoise should govern the design and conduct of RCTs evaluating the effectiveness of policy interventions. I answer this question affirmatively, and introduce and defend the principle of policy equipoise. According to this principle, all arms of a policy RCT must be, at minimum, in a state of equipoise with the best proven policy that is also morally and practically attainable and sustainable. For all arms of a policy RCT, policy experts must either (1) reasonably disagree about whether the trial arms are more effective than this policy, or (2) know that they are. © 2017 John Wiley & Sons Ltd.

Study of Opto-electronic Properties of a Single Microtubule in the Microwave Regime

DTIC Science & Technology

2013-01-09

apparently microtubule grows continuously from tubulins, in that growth randomly triggered rapid growth and long silence modes are superimposed by...synchrony and de-synchrony glues. When such synchrony is introduced in an artificial cell like environment, microtubule does not grow freely, similar to...NOTES 14. ABSTRACT The research establishes the supremacy of synchrony by proving that though apparently microtubule grows continuously from

Dark energy: A brief review

NASA Astrophysics Data System (ADS)

Li, Miao; Li, Xiao-Dong; Wang, Shuang; Wang, Yi

2013-12-01

The problem of dark energy is briefly reviewed in both theoretical and observational aspects. In the theoretical aspect, dark energy scenarios are classified into symmetry, anthropic principle, tuning mechanism, modified gravity, quantum cosmology, holographic principle, back-reaction and phenomenological types. In the observational aspect, we introduce cosmic probes, dark energy related projects, observational constraints on theoretical models and model independent reconstructions.

Principles for Instructional Stack Development in HyperCard.

ERIC Educational Resources Information Center

McEneaney, John E.

The purpose of this paper is to provide information about obtaining and using HyperCard stacks that introduce users to principles of stack development. The HyperCard stacks described are available for downloading free of charge from a server at Indiana University South Bend. Specific directions are given for stack use, with advice for beginners. A…

[MLPA technique--principles and use in practice].

PubMed

Rusu, Cristina; Sireteanu, Adriana; Puiu, Maria; Skrypnyk, Cristina; Tomescu, E; Csep, Katalin; Creţ, Victoria; Barbarii, Ligia

2007-01-01

MLPA (Multiplex Ligation-dependent Probe Amplification) is a recently introduced method, based on PCR principle, useful for the detection of different genetic abnormalities (aneuploidies, gene deletions/duplications, subtelomeric rearrangements, methylation status etc). The technique is simple, reliable and cheap. We present this method to discuss its importance for a modern genetic service and to underline its multiple advantages.

Supporting the Strengths and Activity of Children with Autism in a Technology-Enhanced Learning Environment

ERIC Educational Resources Information Center

Vellonen, Virpi; Kärnä, Eija; Virnes, Marjo

2013-01-01

This paper introduces four principles for the establishment of a technology-enhanced learning environment with and for children with autism spectrum disorders and presents results on how the principles were actualized in relation to children's actions in the environment. The study was conducted as action research premised on the children's active…

A Comparison of Traditional and Blended Learning in Introductory Principles of Accounting Course

ERIC Educational Resources Information Center

Du, Chan

2011-01-01

This paper examines whether a blended course that introduces lower-level education online learned by students before they come into class and after class online assignments and online discussions enhances student performance for an introductory principles of accounting course over the period 2009-2010. The blended course design includes (1)…

Report of the Polymer Core Course Committee: Polymer Principles in the Undergraduate Physical Chemistry Course, Part 1.

ERIC Educational Resources Information Center

Journal of Chemical Education, 1985

1985-01-01

Demonstrates, with a set of definitive examples, how polymer principles can be introduced into the first undergraduate physical chemistry course in a very natural way. The intent is to encourage introduction of polymer-related material into conventional physical chemistry courses without sacrificing any rigor associated with such courses. (JN)

Public Relations for Brazilian Libraries: Process, Principles, Program Planning, Planning Techniques and Suggestions.

ERIC Educational Resources Information Center

Kies, Cosette N.

A brief overview of the functions of public relations in libraries introduces this manual, which provides an explanation of the public relations (PR) process, including fact-finding, planning, communicating, evaluating, and marketing; some PR principles; a 10-step program that could serve as a model for planning a PR program; a discussion of PR…

Thermodynamics in landscape ecology: The importance of integrating measurement and modeling of landscape entropy

Treesearch

Samuel A. Cushman

2015-01-01

Entropy and the second law of thermodynamics are the central organizing principles of nature. Or perhaps more accurately, the second law is the central disorganizing principle. Hot things cool down. Cold things warm up. You cannot get something for nothing. You always pay more than you get. Things fall apart. You cannot repeat the past. We grow old and die. It is all...

Principles of commercially available pretreatment and feeding equipment for baled biomass

DOE Office of Scientific and Technical Information (OSTI.GOV)

Koch, T.; Hummelshoej, R.M.

1993-12-31

During the last 15 years, there has been a growing interest in utilizing waste biomass for energy production in Denmark. Since 1990, it has been unlawful to burn surplus straw on open land. Before the year 2000, it is intended to utilize most of the 2--3 million tons of surplus straw as an energy resource. The type of plants that were built in the beginning were combustion plants for district heating. The feeding equipment for these plants has been developed to an acceptable standard. Later, combustion plants for combined heat and power production based on a steam turbine were introduced.more » This type of plant demands a much greater continuity in the fuel flow, and the consequences of minor discontinuities are to be dropped from the grid. Gasification and pyrolysis demands a high sealing ability of the feeding equipment, because of the explosive and poisonous gas in the plant and a need for a very high continuity in the fuel feed. The first plants were built with the equipment and experiences from the farming industries, which have a long tradition in working with biomass-handling. The experiences gained with this type of equipment were not very promising, and in the early eighties, a more industrial type of biomass-handling equipment was developed. This paper presents the principles of the heavy-duty biomass pretreatment and feeding equipment that was commercially available in Denmark in May, 1993.« less

Tutorial Facilitation in the Humanities Based on the Tenets of Carl Rogers

ERIC Educational Resources Information Center

Heim, Caroline

2012-01-01

This article introduces a model for group facilitation in the humanities based on Carl Rogers' model for group psychotherapy. Certain aspects of Carl Rogers' reflective learning strategies are reappraised and principles, specific only to psychotherapy, are introduced. Five of Rogers' axioms are applied to the tutorial discussion model: a…

Beckham as Physicist?

ERIC Educational Resources Information Center

Ireson, Gren

2001-01-01

If football captures the interest of students, it can be used to teach physics. In this case, a Beckham free-kick can be used to introduce concepts such as drag, the Bernoulli principle, Reynolds number, and the Magnus effect by asking the simple question: How does he curve the ball so much? Introduces basic mechanics along the way. (Author/ASK)

Economics: An Analysis of Unintended Consequences. Volume 1: Introduction to Microeconomics.

ERIC Educational Resources Information Center

Schenk, Robert E.

This curriculum guide introduces high school students to the basic principles of microeconomics. Chapter 1 provides a basic definition of economics, while chapter 2 introduces a number of important economic concepts and ideas and examines reasons for unintended or unexpected consequences of decision-making. Chapter 3 considers how individual…

Principles of Quantile Regression and an Application

ERIC Educational Resources Information Center

Chen, Fang; Chalhoub-Deville, Micheline

2014-01-01

Newer statistical procedures are typically introduced to help address the limitations of those already in practice or to deal with emerging research needs. Quantile regression (QR) is introduced in this paper as a relatively new methodology, which is intended to overcome some of the limitations of least squares mean regression (LMR). QR is more…

If Maxwell Had Worked between Ampere and Faraday: An Historical Fable with a Pedagogical Moral.

ERIC Educational Resources Information Center

Jammer, Max; Stachel, John

1980-01-01

Describes a new pedagogical approach to electromagnetic theory, in which the displacement current and the Galilean relativity principle are introduced before discussion of the Faraday induction term. Rationale for the alternate order of introducing these concepts and laws is explained, relative to their historical development. (CS)

The anatomy of self-defense.

PubMed

Stein, Pamela Sparks; Richardson, April D; Challman, Sandra D

2008-01-01

The following study describes a creative application of anatomical principles in the instruction of self-defense. Undergraduates at the University of Kentucky were invited to a special lecture that featured a series of self-defense moves introduced by a local police officer. Following a demonstration of each self-defense tactic, the students were briefed on the anatomy of both the victim and the assailant that contributed to the overall effectiveness of each move. This approach was unique in that students learned critical knowledge of self-defense while reinforcing anatomical principles previously introduced in class. Moreover, this integration of topics prompted students to think about their response to potentially dangerous situations on campus. (c) 2008 American Association of Anatomists.

An Experimental Introduction to Acoustics

NASA Astrophysics Data System (ADS)

Black, Andy Nicholas; Magruder, Robert H.

2017-11-01

Learning and understanding physics requires more than studying physics texts. It requires doing physics. Doing research is a key opportunity for students to connect physical principles with their everyday experience. A powerful way to introduce students to research and technique is through subjects in which they might find interest. Presented is an experiment that serves to introduce an advanced undergraduate or high school student to conducting research in acoustics via an experiment involving a standard dreadnought acoustic guitar, recording industry-related equipment, and relevant industrial analysis software. This experimental process is applicable to a wide range of acoustical topics including both acoustic and electric instruments. Also, the student has a hands-on experience with relevant audio engineering technology to study physical principles.

Theoretical and practical considerations for the development of online international collaborative learning for dental hygiene students.

PubMed

Gussy, M G; Knevel, R J M; Sigurdson, V; Karlberg, G

2006-08-01

Globalization and concurrent development in computer and communication technology has increased interest in collaborative online teaching and learning for students in higher education institutions. Many institutions and teachers have introduced computer-supported programmes in areas including dental hygiene. The potential for the use of this technology is exciting; however, its introduction should be careful and considered. We suggest that educators wanting to introduce computer-supported programmes make explicit their pedagogical principles and then select technologies that support and exploit these principles. This paper describes this process as it was applied to the development of an international web-based collaborative learning programme for dental hygiene students.

Terminating DNA Tile Assembly with Nanostructured Caps.

PubMed

Agrawal, Deepak K; Jiang, Ruoyu; Reinhart, Seth; Mohammed, Abdul M; Jorgenson, Tyler D; Schulman, Rebecca

2017-10-24

Precise control over the nucleation, growth, and termination of self-assembly processes is a fundamental tool for controlling product yield and assembly dynamics. Mechanisms for altering these processes programmatically could allow the use of simple components to self-assemble complex final products or to design processes allowing for dynamic assembly or reconfiguration. Here we use DNA tile self-assembly to develop general design principles for building complexes that can bind to a growing biomolecular assembly and terminate its growth by systematically characterizing how different DNA origami nanostructures interact with the growing ends of DNA tile nanotubes. We find that nanostructures that present binding interfaces for all of the binding sites on a growing facet can bind selectively to growing ends and stop growth when these interfaces are presented on either a rigid or floppy scaffold. In contrast, nucleation of nanotubes requires the presentation of binding sites in an arrangement that matches the shape of the structure's facet. As a result, it is possible to build nanostructures that can terminate the growth of existing nanotubes but cannot nucleate a new structure. The resulting design principles for constructing structures that direct nucleation and termination of the growth of one-dimensional nanostructures can also serve as a starting point for programmatically directing two- and three-dimensional crystallization processes using nanostructure design.

Geography library of Test Items. Volume Seven: A Selection of Test Items to Accompany the Resource Kit: Rice Growing & Rice Milling in South-Western New South Wales.

ERIC Educational Resources Information Center

Kouimanos, John, Ed.

Accompanying a multimedia resource unit on aspects of rice growing, volume eight of the geography collection includes a section introducing terminology, a viewing guide to the filmstrips and unit test items. Rice farming and marketing in Australia and growing methods in several countries are presented with regional studies in southeast Australia.…

DOE Office of Scientific and Technical Information (OSTI.GOV)

Mohapi, N.; Hees, A.; Larena, J., E-mail: n.mohapi@gmail.com, E-mail: a.hees@ru.ac.za, E-mail: j.larena@ru.ac.za

The Einstein Equivalence Principle is a fundamental principle of the theory of General Relativity. While this principle has been thoroughly tested with standard matter, the question of its validity in the Dark sector remains open. In this paper, we consider a general tensor-scalar theory that allows to test the equivalence principle in the Dark sector by introducing two different conformal couplings to standard matter and to Dark matter. We constrain these couplings by considering galactic observations of strong lensing and of velocity dispersion. Our analysis shows that, in the case of a violation of the Einstein Equivalence Principle, data favourmore » violations through coupling strengths that are of opposite signs for ordinary and Dark matter. At the same time, our analysis does not show any significant deviations from General Relativity.« less

Traits and Resource Use of Co-Occurring Introduced and Native Trees in a Tropical Novel Forest

Treesearch

Jéssica Fonseca da Silva; Ernesto Medina; Ariel Lugo

2017-01-01

Novel forests are naturally regenerating forests that have established on degraded lands and have a species composition strongly influenced by introduced species. We studied ecophysiological traits of an introduced species (Castilla elastica Sessé) and several native species growing side by side in novel forests dominated by C. elastica ...

Principles of cancer prevention.

PubMed

Meyskens, Frank L; Tully, Patricia

2005-11-01

To summarize the scientific principles underlying cancer prevention. Articles, text books, personal communications, and experience. The scientific basis of cancer prevention is complex and involves experimental and epidemiologic approaches and clinical trials. As more information becomes available regarding proven and potential cancer-prevention strategies, oncology nurses are regularly called upon to guide patients and others in making choices regarding preventative options. It is important for oncology nurses to stay abreast of this growing body of knowledge.

Acupressure for Educators: An Illustrated Workbook for the Practice of Simple Acupressure Techniques. Experiencing Energy. Third Edition.

ERIC Educational Resources Information Center

St. John, Jeanne

The guidelines are intended to familiarize educators with the basics of acupressure and to suggest ways in which the principles may help relieve anxiety and stress in school students. Eight energy exercises are introduced, followed by a review of the basic principles of energy and guidelines for giving and receiving acupressure. Illustrations of…

Application of Multimedia Design Principles to Visuals Used in Course-Books: An Evaluation Tool

ERIC Educational Resources Information Center

Kuzu, Abdullah; Akbulut, Yavuz; Sahin, Mehmet Can

2007-01-01

This paper introduces an evaluation tool prepared to examine the quality of visuals in course-books. The tool is based on Mayer's Cognitive Theory of Multimedia Learning (i.e. Generative Theory) and its principles regarding the correct use of illustrations within text. The reason to generate the tool, the development process along with the…

Environmental Impact Assessment: Teaching the Principles and Practices by Means of a Role-Playing Case Study

ERIC Educational Resources Information Center

Crittenden, Barry D.; England, Richard

2005-01-01

The principles and practices of environmental impact assessment are best taught to chemical engineering undergraduate students by means of a role­-playing case study. Many suitable examples are available from public sources. The planning appeal process has been selected so as to introduce an adversarial style involving cross-­examination on…

Profit--The Key. Principles of the American Free Enterprise System for Distributive Education Students. Instructor's Guide.

ERIC Educational Resources Information Center

Hook, Sallie A.; And Others

In this distributive education unit teacher's guide on the free enterprise system, principles of the American economic system are introduced as they relate to marketing and distribution. (The study guide is available as CE 020 458.) The guide preview sheet includes a list of audiovisual equipment necessary, duration of the unit (sixteen to…

New antimicrobial peptides against foodborne pathogens: From in silico design to experimental evidence.

PubMed

Palmieri, Gianna; Balestrieri, Marco; Proroga, Yolande T R; Falcigno, Lucia; Facchiano, Angelo; Riccio, Alessia; Capuano, Federico; Marrone, Raffaele; Neglia, Gianluca; Anastasio, Aniello

2016-11-15

Recently there has been growing interest in the discovery of new antimicrobial agents to increase safety and shelf-life of food products. Here, we developed an innovative approach by introducing the concept that mitochondrial targeting peptides (MTP) can interact and disrupt bacterial membranes, acting as antimicrobial agents. As proof-of-principle, we used a multidisciplinary strategy by combining in silico predictions, docking simulations and antimicrobial assays, to identify two peptides, MTP1 and MTP2, which were structurally and functionally characterized. Both compounds appeared effective against Listeria monocytogenes, one of the most important foodborne pathogens. Specifically, a significant bactericidal activity was evidenced with EC50 values of 16.8±1.2μM for MTP1 and 109±7.0μM for MTP2. Finally, NMR structure determinations suggested that MTP1 would be oriented into the membrane bilayer, while the molecular shape of MTP2 could indicate porin-mediated antimicrobial mechanisms, as predicted using molecular docking analysis. Therefore, MTPs represent alternative sources to design new potential bio-preservatives. Copyright © 2016 Elsevier Ltd. All rights reserved.

The Significance of Small Cracks in Fatigue Design Concepts as Related to Rotorcraft Metallic Dynamic Components

NASA Technical Reports Server (NTRS)

Everett, R. A., Jr.; Elber, W.

2000-01-01

In this paper the significance of the "small" crack effect as defined in fracture mechanics will be discussed as it relates to life managing rotorcraft dynamic components using the conventional safe-life, the flaw tolerant safe-life, and the damage tolerance design philosophies. These topics will be introduced starting with an explanation of the small-crack theory, then showing how small-crack theory has been used to predict the total fatigue life of fatigue laboratory test coupons with and without flaws, and concluding with how small cracks can affect the crack-growth damage tolerance design philosophy. As stated in this paper the "small" crack effect is defined in fracture mechanics where it has been observed that cracks on the order of 300 microns or less in length will propagate at higher growth rates than long cracks and also will grow at AK values below the long crack AK threshold. The small-crack effect is illustrated herein as resulting from a lack of crack closure and is explained based on continuum mechanics principles using crack-closure concepts in fracture mechanics.

RELIGIOUS, SPIRITUAL, AND TRADITIONAL BELIEFS AND PRACTICES AND THE ETHICS OF MENTAL HEALTH RESEARCH IN LESS WEALTHY COUNTRIES*

PubMed Central

NOLAN, JENNIFER A.; WHETTEN, KATHRYN; KOENIG, HAROLD G.

2013-01-01

This discussion article contributes to ethics reform by introducing the contribution of religious, spiritual, and traditional beliefs and practices to both subject vulnerability and patient improvement. A growing body of evidence suggests that religious, spiritual, and traditional beliefs and practices may provide positive benefits, although in some cases mixed or negative consequences to mental and physical health. These beliefs and practices add a new level of complexity to ethical deliberations, in terms of what ignoring them may mean for both distributive justice and respect for persons. International ethical guidelines need to be created that are expansive enough to cover an array of social groups and circumstances. It is proposed that these guidelines incorporate the religious, spiritual, and/or traditional principles that characterize a local population. Providing effective mental healthcare requires respecting and understanding how differences, including ones that express a population's religious, spiritual, or traditional belief systems, play into the complex deliberations and negotiations that must be undertaken if researchers are to adhere to ethical imperatives in research and treatment. PMID:22439296

Lateral habenula perturbation reduces default-mode network connectivity in a rat model of depression.

PubMed

Clemm von Hohenberg, Christian; Weber-Fahr, Wolfgang; Lebhardt, Philipp; Ravi, Namasivayam; Braun, Urs; Gass, Natalia; Becker, Robert; Sack, Markus; Cosa Linan, Alejandro; Gerchen, Martin Fungisai; Reinwald, Jonathan Rochus; Oettl, Lars-Lennart; Meyer-Lindenberg, Andreas; Vollmayr, Barbara; Kelsch, Wolfgang; Sartorius, Alexander

2018-03-27

Hyperconnectivity of the default-mode network (DMN) is one of the most widely replicated neuroimaging findings in major depressive disorder (MDD). Further, there is growing evidence for a central role of the lateral habenula (LHb) in the pathophysiology of MDD. There is preliminary neuroimaging evidence linking LHb and the DMN, but no causal relationship has been shown to date. We combined optogenetics and functional magnetic resonance imaging (fMRI), to establish a causal relationship, using an animal model of treatment-resistant depression, namely Negative Cognitive State rats. First, an inhibitory light-sensitive ion channel was introduced into the LHb by viral transduction. Subsequently, laser stimulation was performed during fMRI acquisition on a 9.4 Tesla animal scanner. Neural activity and connectivity were assessed, before, during and after laser stimulation. We observed a connectivity decrease in the DMN following laser-induced LHb perturbation. Our data indicate a causal link between LHb downregulation and reduction in DMN connectivity. These findings may advance our mechanistic understanding of LHb inhibition, which had previously been identified as a promising therapeutic principle, especially for treatment-resistant depression.

First-principles comparative study on the interlayer adhesion and shear strength of transition-metal dichalcogenides and graphene

NASA Astrophysics Data System (ADS)

Levita, Giacomo; Molinari, Elisa; Polcar, Tomas; Righi, Maria Clelia

2015-08-01

Due to their layered structure, graphene and transition-metal dichalcogenides (TMDs) are easily sheared along the basal planes. Despite a growing attention towards their use as solid lubricants, so far no head-to-head comparison has been carried out. By means of ab initio modeling of a bilayer sliding motion, we show that graphene is characterized by a shallower potential energy landscape while more similarities are attained when considering the sliding forces; we propose that the calculated interfacial ideal shear strengths afford the most accurate information on the intrinsic sliding capability of layered materials. We also investigate the effect of an applied uniaxial load: in graphene, this introduces a limited increase in the sliding barrier while in TMDs it has a substantially different impact on the possible polytypes. The polytype presenting a parallel orientation of the layers (R 0 ) bears more similarities to graphene while that with antiparallel orientation (R 180 ) shows deep changes in the potential energy landscape and consequently a sharper increase of its sliding barrier.

A Model for Training Public Health Workers in Health Policy: the Nebraska Health Policy Academy

PubMed Central

Brandert, Kathleen; McCarthy, Claudine; Grimm, Brandon; Svoboda, Colleen; Palm, David

2014-01-01

There is growing recognition that health goals are more likely to be achieved and sustained if programs are complemented by appropriate changes in the policies, systems, and environments that shape their communities. However, the knowledge, skills, and abilities needed to create and implement policy are among the major needs identified by practitioners at both the state and local levels. This article describes the structure and content of the Nebraska Health Policy Academy (the Academy), a 9-month program developed to meet the demand for this training. The Academy is a competency-based training program that aims to increase the capacity of Nebraska’s state and local public health staff and their community partners to use public health policy and law as a public health tool. Our initiative allows for participation across a large, sparsely populated state; is grounded in adult learning theory; introduces the key principles and practices of policy, systems, and environmental change; and is offered free of charge to the state’s public health workforce. Challenges and lessons learned when offering workforce development on public health policy efforts are discussed. PMID:24831286

Emergence of Multiplex Communities in Collaboration Networks.

PubMed

Battiston, Federico; Iacovacci, Jacopo; Nicosia, Vincenzo; Bianconi, Ginestra; Latora, Vito

2016-01-01

Community structures in collaboration networks reflect the natural tendency of individuals to organize their work in groups in order to better achieve common goals. In most of the cases, individuals exploit their connections to introduce themselves to new areas of interests, giving rise to multifaceted collaborations which span different fields. In this paper, we analyse collaborations in science and among movie actors as multiplex networks, where the layers represent respectively research topics and movie genres, and we show that communities indeed coexist and overlap at the different layers of such systems. We then propose a model to grow multiplex networks based on two mechanisms of intra and inter-layer triadic closure which mimic the real processes by which collaborations evolve. We show that our model is able to explain the multiplex community structure observed empirically, and we infer the strength of the two underlying social mechanisms from real-world systems. Being also able to correctly reproduce the values of intra-layer and inter-layer assortativity correlations, the model contributes to a better understanding of the principles driving the evolution of social networks.

Machine learning Z2 quantum spin liquids with quasiparticle statistics

NASA Astrophysics Data System (ADS)

Zhang, Yi; Melko, Roger G.; Kim, Eun-Ah

2017-12-01

After decades of progress and effort, obtaining a phase diagram for a strongly correlated topological system still remains a challenge. Although in principle one could turn to Wilson loops and long-range entanglement, evaluating these nonlocal observables at many points in phase space can be prohibitively costly. With growing excitement over topological quantum computation comes the need for an efficient approach for obtaining topological phase diagrams. Here we turn to machine learning using quantum loop topography (QLT), a notion we have recently introduced. Specifically, we propose a construction of QLT that is sensitive to quasiparticle statistics. We then use mutual statistics between the spinons and visons to detect a Z2 quantum spin liquid in a multiparameter phase space. We successfully obtain the quantum phase boundary between the topological and trivial phases using a simple feed-forward neural network. Furthermore, we demonstrate advantages of our approach for the evaluation of phase diagrams relating to speed and storage. Such statistics-based machine learning of topological phases opens new efficient routes to studying topological phase diagrams in strongly correlated systems.

Research on Hartmann test for progressive addition lenses

NASA Astrophysics Data System (ADS)

Qin, Lin-ling; Yu, Jing-chi

2009-05-01

Recently, in the world some growing-up measurements for Progressive addition lenses and relevant equipments have been developed. They are single point measurement, moiré deflectometry, Ronchi test techniques. Hartmann test for Progressive addition lenses is proposed in the article. The measurement principle of Hartmann test for ophthalmic lenses and the power compensation of off-axis rays are introduced. The experimental setup used to test lenses is put forward. For experimental test, a spatial filter is used for selecting a clean Gaussian beam; a collimating lens with focal distance f =300 mm is used to produce collimated beam. The Hartmann plate with a square array of holes separated at 2 mm is selected. The selection of laser and CCD camera is critical to the accuracy of experiment and the image processing algorithm. The spot patterns from CCD are obtained from the experimental tests. The power distribution map for lenses can be obtained by image processing in theory. The results indicate that Hartmann test for Progressive addition lenses is convenient and feasible; also its structure is simple.

Growing, Growing Strong. A Whole Health Curriculum for Young Children.

ERIC Educational Resources Information Center

Smith, Connie Jo; Hendricks, Charlotte M.; Bennett, Becky S.

This curriculum supports teachers who want to integrate health education into the early childhood curriculum, introducing health information through interactive activities. The book presents ideas for eight health-related themes. Themes overlap and are reinforced throughout the book. Chapter 1, "My Wonderful Body," discusses three topics: body…

Analysis of multiple pulse NMR in solids. III

NASA Technical Reports Server (NTRS)

Burum, D. P.; Rhim, W. K.

1979-01-01

The paper introduces principles which greatly simplify the process of designing and analyzing compound pulse cycles. These principles are demonstrated by applying them to the design and analysis of several cycles, including a 52-pulse cycle; this pulse cycle combines six different REV-8 cycles and has substantially more resolving power than previously available techniques. Also, a new 24-pulse cycle is introduced which combines three different REV-8 cycles and has a resolving ability equivalent to that of the 52-pulse cycle. The principle of pulse-cycle decoupling provides a method for systematically combining pulse groups into compound cycles in order to achieve enhanced performance. This method is illustrated by a logical development from the two-pulse solid echo sequence to the WAHUHA (Waugh et al., 1968), the REV-8, and the new 24-pulse and 52-pulse cycles, along with the 14-pulse and 12-pulse cycles. Proton chemical shift tensor components for several organic solids, measured by using the 52-pulse cycle, are reported without detailed discussion.

The Ranking of Higher Education Institutions in Russia: Some Methodological Problems.

ERIC Educational Resources Information Center

Filinov, Nikolay B.; Ruchkina, Svetlana

2002-01-01

The ranking of higher education institutions in Russia is examined from two points of view: as a social phenomenon and as a multi-criteria decision-making problem. The first point of view introduces the idea of interested and involved parties; the second introduces certain principles on which a rational ranking methodology should be based.…

Introducing High School Students to Chemical Engineering Kinetics with a Simple Experiment-Based Smartphone Education Application

ERIC Educational Resources Information Center

Stanley, Simone; Ymele-Leki, Patrick

2017-01-01

A community outreach project was integrated in a District of Columbia public schools summer internship program for students from underrepresented minorities in STEM. The project introduced these students to fundamental engineering principles by leveraging a smartphone application (App) so readily accessible and attractive to them that it boosted…

The Perception of Participation in Executive Governance Structures in Dutch Universities

ERIC Educational Resources Information Center

Huisman, Jeroen; de Boer, Harry; Goedegebuure, Leo

2006-01-01

In 1997 a new governance act, based on the principles of New Public Management (NPM) was introduced at Dutch universities. The aims were to realise integrated management, to strengthen the position of executives at the central (executive board) and faculty (dean) levels, to introduce a Supervisory Board at the institution's central level, and to…

Derivation of GFDM Based on OFDM Principles

DOE Office of Scientific and Technical Information (OSTI.GOV)

Hussein Moradi; Behrouz Farhang-Boroujeny

2015-06-01

This paper starts with discussing the principle based on which the celebrated orthogonal frequency division multiplexing (OFDM) signals are constructed. It then extends the same principle to construct the newly introduced generalized frequency division multiplexing (GFDM) signals. This novel derivation sheds light on some interesting properties of GFDM. In particular, our derivation seamlessly leads to an implementation of GFDM transmitter which has significantly lower complexity than what has been reported so far. Our derivation also facilitates a trivial understanding of how GFDM (similar to OFDM) can be applied in MIMO channels.

Maximum principle for a stochastic delayed system involving terminal state constraints.

PubMed

Wen, Jiaqiang; Shi, Yufeng

2017-01-01

We investigate a stochastic optimal control problem where the controlled system is depicted as a stochastic differential delayed equation; however, at the terminal time, the state is constrained in a convex set. We firstly introduce an equivalent backward delayed system depicted as a time-delayed backward stochastic differential equation. Then a stochastic maximum principle is obtained by virtue of Ekeland's variational principle. Finally, applications to a state constrained stochastic delayed linear-quadratic control model and a production-consumption choice problem are studied to illustrate the main obtained result.

Fluorescent-protein-based probes: general principles and practices.

PubMed

Ai, Hui-Wang

2015-01-01

An important application of fluorescent proteins is to derive genetically encoded fluorescent probes that can actively respond to cellular dynamics such as pH change, redox signaling, calcium oscillation, enzyme activities, and membrane potential. Despite the large diverse group of fluorescent-protein-based probes, a few basic principles have been established and are shared by most of these probes. In this article, the focus is on these general principles and strategies that guide the development of fluorescent-protein-based probes. A few examples are provided in each category to illustrate the corresponding principles. Since these principles are quite straightforward, others may adapt them to create fluorescent probes for their own interest. Hopefully, the development of the ever-growing family of fluorescent-protein-based probes will no longer be limited to a small number of laboratories specialized in senor development, leading to the situation that biological studies will be bettered assisted by genetically encoded sensors.

Principles of Wetland Restoration

EPA Pesticide Factsheets

the return of a degraded ecosystem to a close approximation of its remaining natural potential - is experiencing a groundswell of support across the United States. The number of stream, river, lake, wetland and estuary restoration projects grows yearly

Opportunities and problems in introducing or expanding the teaching of remote sensing in universities

NASA Technical Reports Server (NTRS)

Maxwell, E. L.

1980-01-01

The need for degree programs in remote sensing is considered. Any education program which claims to train remote sensing specialists must include expertise in the physical principles upon which remote sensing is based. These principles dictate the limits of engineering and design, computer analysis, photogrammetry, and photointerpretation. Faculty members must be hired to provide emphasis in those five areas.

Design Principles for E-Government Architectures

NASA Astrophysics Data System (ADS)

Sandoz, Alain

The paper introduces a holistic approach for architecting systems which must sustain the entire e-government activity of a public authority. Four principles directly impact the architecture: Legality, Responsibility, Transparency, and Symmetry leading to coherent representations of the architecture for the client, the designer and the builder. The approach enables to deploy multipartite, distributed public services, including legal delegation of roles and outsourcing of non mandatory tasks through PPP.

A variational principle for compressible fluid mechanics: Discussion of the multi-dimensional theory

NASA Technical Reports Server (NTRS)

Prozan, R. J.

1982-01-01

The variational principle for compressible fluid mechanics previously introduced is extended to two dimensional flow. The analysis is stable, exactly conservative, adaptable to coarse or fine grids, and very fast. Solutions for two dimensional problems are included. The excellent behavior and results lend further credence to the variational concept and its applicability to the numerical analysis of complex flow fields.

Teaching Archimedes' Principle to Sixth Graders without Teaching Mass, Density, Pressure, Volume or Buoyancy

ERIC Educational Resources Information Center

Raghavan, Neeraja

2017-01-01

Flotation is usually taught in Indian schools after students have been introduced to the concepts of mass, density, pressure, volume and buoyancy. This paper describes an attempt to teach the principle of flotation to a class of sixth graders--who had not yet been taught these concepts--so they could understand (and perhaps, arrive at) Archimedes'…

Blind Channel Equalization with Colored Source Based on Constrained Optimization Methods

NASA Astrophysics Data System (ADS)

Wang, Yunhua; DeBrunner, Linda; DeBrunner, Victor; Zhou, Dayong

2008-12-01

Tsatsanis and Xu have applied the constrained minimum output variance (CMOV) principle to directly blind equalize a linear channel—a technique that has proven effective with white inputs. It is generally assumed in the literature that their CMOV method can also effectively equalize a linear channel with a colored source. In this paper, we prove that colored inputs will cause the equalizer to incorrectly converge due to inadequate constraints. We also introduce a new blind channel equalizer algorithm that is based on the CMOV principle, but with a different constraint that will correctly handle colored sources. Our proposed algorithm works for channels with either white or colored inputs and performs equivalently to the trained minimum mean-square error (MMSE) equalizer under high SNR. Thus, our proposed algorithm may be regarded as an extension of the CMOV algorithm proposed by Tsatsanis and Xu. We also introduce several methods to improve the performance of our introduced algorithm in the low SNR condition. Simulation results show the superior performance of our proposed methods.

The precautionary principle and pharmaceutical risk management.

PubMed

Callréus, Torbjörn

2005-01-01

Although it is often vigorously contested and has several different formulations, the precautionary principle has in recent decades guided environmental policy making in the face of scientific uncertainty. Originating from a criticism of traditional risk assessment, the key element of the precautionary principle is the justification for acting in the face of uncertain knowledge about risks. In the light of its growing invocation in various areas that are related to public health and recently in relation to drug safety issues, this article presents an introductory review of the main elements of the precautionary principle and some arguments conveyed by its advocates and opponents. A comparison of the characteristics of pharmaceutical risk management and environmental policy making (i.e. the setting within which the precautionary principle evolved), indicates that several important differences exist. If believed to be of relevance, in order to avoid arbitrary and unpredictable decision making, both the interpretation and possible application of the precautionary principle need to be adapted to the conditions of pharmaceutical risk management.

Adsorption of organic molecules on mineral surfaces studied by first-principle calculations: A review.

PubMed

Zhao, Hongxia; Yang, Yong; Shu, Xin; Wang, Yanwei; Ran, Qianping

2018-04-09

First-principle calculations, especially by the density functional theory (DFT) methods, are becoming a power technique to study molecular structure and properties of organic/inorganic interfaces. This review introduces some recent examples on the study of adsorption models of organic molecules or oligomers on mineral surfaces and interfacial properties obtained from first-principles calculations. The aim of this contribution is to inspire scientists to benefit from first-principle calculations and to apply the similar strategies when studying and tailoring interfacial properties at the atomistic scale, especially for those interested in the design and development of new molecules and new products. Copyright © 2017. Published by Elsevier B.V.

Growing up and Growing out: Emerging Adults Learn Management through Service-Learning

ERIC Educational Resources Information Center

Fairfield, Kent D.

2010-01-01

This article describes a journey introducing service-learning based on large-scale projects in an undergraduate management curriculum, leading to supplementing this approach with more conventional small-group projects. It outlines some of the foundation for service-learning. Having students undertake a single class-wide project offers distinctive…

Plant Factory

NASA Astrophysics Data System (ADS)

Ikeda, Hideo

Recently, much attention is paid on the plant factory, as it enable to grow plants stably under extraordinary climate condition such as high and/or low air temperature and less rain. Lots of questions such as decreasing investing cost, realizing stable plant production and developing new growing technique should be solved for making popular this growing system. However, I think that we can introduce a highly developed Japanese industrial now-how to plant factory system and can produce a business chance to the world market.

"I'm Not a Feminist, But...": Introducing Feminism in Psychology of Women Courses

ERIC Educational Resources Information Center

Dottolo, Andrea L.

2011-01-01

This article will describe an exercise the author uses within the first week (usually the second day) of her Psychology of Women courses in order to (a) quickly introduce basic principles of feminism, (b) dispel some of the myths and stereotypes about feminists, and (c) address some students' fears and misconceptions about feminism and the course.…

Bustin' Bunnies: An Adaptable Inquiry-Based Approach Introducing Molecular Weight and Polymer Properties

ERIC Educational Resources Information Center

Mc Ilrath, Sean P.; Robertson, Nicholas J.; Kuchta, Robert J.

2012-01-01

Plastics are more prevalent in our society than ever before, yet the general public has a limited understanding of why plastics have properties that are vastly different from other common materials such as glass and ceramics. This lab is designed to introduce students to several introductory principles of polymer science and their relation to the…

Sleightly Persuasive: Using Magic To Teach Principles of Persuasion.

ERIC Educational Resources Information Center

Frasier, C. Jay

Magic can be used in the communication classroom as a means for introducing and/or illustrating the subject of persuasion. A magical effect which fools the class can lead to an early discussion of the need to be a critical consumer of persuasive messages. Magic can also be used to introduce the subject of ethics in persuasion. Each student can be…

Introducing Chemical Reactions Concepts in K-6 through a Hands-On Food Spherification and Spaghetti-Fication Experiment

ERIC Educational Resources Information Center

Gupta, Anju; Hill, Nicole; Valenzuela, Patricia; Johnson, Eric

2017-01-01

Recruiting students in STEM majors to fill the gap in STEM workforce is a continued challenge, which can be addressed by introducing scientific principles through hand-on activities to the students at an early stage. This paper presents the design, implementation and assessment of a chemistry-related workshop for sixth grade students that were…

Participation in Research Program: A Novel Course in Undergraduate Education of Life Science

ERIC Educational Resources Information Center

Zhou, Xuanwei; Lin, Juan; Yin, Yizhou; Sun, Xiaofen; Tang, Kexuan

2007-01-01

A novel course, "Participation in Research Program (PRP)" in life sciences is open for 1st to 3rd year undergraduates. PRP introduces the principles of a variety of biological methods and techniques and also offers an opportunity to explore some specific knowledge in more detail prior to thesis research. In addition, the PRP introduces some…

Detecting Breakdowns in Local Coherence in the Writing of Chinese English Learners

ERIC Educational Resources Information Center

Wang, Y.; Harrington, M.; White, P.

2012-01-01

This paper introduces "CTutor", an automated writing evaluation (AWE) tool for detecting breakdowns in local coherence and reports on a study that applies it to the writing of Chinese L2 English learners. The program is based on Centering theory (CT), a theory of local coherence and salience. The principles of CT are first introduced and…

Hydroponics--Studies in Plant Culture With Historical Roots.

ERIC Educational Resources Information Center

Lopez, Luz Maria

1981-01-01

Presents methods for demonstrating and applying scientific principles by growing plants through water culture (hydroponics), including a review of the history of hydroponics, re-creating some early experiments, and setting up a modern hydroponic system. (CS)

Machine learning approach for automatic quality criteria detection of health web pages.

PubMed

Gaudinat, Arnaud; Grabar, Natalia; Boyer, Célia

2007-01-01

The number of medical websites is constantly growing [1]. Owing to the open nature of the Web, the reliability of information available on the Web is uneven. Internet users are overwhelmed by the quantity of information available on the Web. The situation is even more critical in the medical area, as the content proposed by health websites can have a direct impact on the users' well being. One way to control the reliability of health websites is to assess their quality and to make this assessment available to users. The HON Foundation has defined a set of eight ethical principles. HON's experts are working in order to manually define whether a given website complies with s the required principles. As the number of medical websites is constantly growing, manual expertise becomes insufficient and automatic systems should be used in order to help medical experts. In this paper we present the design and the evaluation of an automatic system conceived for the categorisation of medical and health documents according to he HONcode ethical principles. A first evaluation shows promising results. Currently the system shows 0.78 micro precision and 0.73 F-measure, with 0.06 errors.

The alcohol industry and public interest science.

PubMed

Stenius, Kerstin; Babor, Thomas F

2010-02-01

This report argues that the growing involvement of the alcohol industry in scientific research needs to be acknowledged and addressed. It suggests a set of principles to guide ethical decision-making in the future. We review relevant issues with regard to relationships between the alcohol industry and the international academic community, especially alcohol research scientists. The guiding principles proposed are modelled after expert committee statements, and describe the responsibilities of governmental agencies, the alcohol industry, journal editors and the academic community. These are followed by recommendations designed to inform individuals and institutions about current 'best practices' that are consistent with the principles. Growing evidence from the tobacco, pharmaceutical and medical fields suggests that financial interests of researchers may compromise their professional judgement and lead to research results that are biased in favour of commercial interests. It is recommended that the integrity of alcohol science is best served if all financial relationships with the alcoholic beverage industry are avoided. In cases where research funding, consulting, writing assignments and other activities are initiated, institutions, individuals and the alcoholic beverage industry itself are urged to follow appropriate guidelines that will increase the transparency and ethicality of such relationships.

The Quantitative Analysis of User Behavior Online - Data, Models and Algorithms

NASA Astrophysics Data System (ADS)

Raghavan, Prabhakar

By blending principles from mechanism design, algorithms, machine learning and massive distributed computing, the search industry has become good at optimizing monetization on sound scientific principles. This represents a successful and growing partnership between computer science and microeconomics. When it comes to understanding how online users respond to the content and experiences presented to them, we have more of a lacuna in the collaboration between computer science and certain social sciences. We will use a concrete technical example from image search results presentation, developing in the process some algorithmic and machine learning problems of interest in their own right. We then use this example to motivate the kinds of studies that need to grow between computer science and the social sciences; a critical element of this is the need to blend large-scale data analysis with smaller-scale eye-tracking and "individualized" lab studies.

High speed nucleic acid sequencing

DOEpatents

Korlach, Jonas [Ithaca, NY; Webb, Watt W [Ithaca, NY; Levene, Michael [Ithaca, NY; Turner, Stephen [Ithaca, NY; Craighead, Harold G [Ithaca, NY; Foquet, Mathieu [Ithaca, NY

2011-05-17

The present invention is directed to a method of sequencing a target nucleic acid molecule having a plurality of bases. In its principle, the temporal order of base additions during the polymerization reaction is measured on a molecule of nucleic acid. Each type of labeled nucleotide comprises an acceptor fluorophore attached to a phosphate portion of the nucleotide such that the fluorophore is removed upon incorporation into a growing strand. Fluorescent signal is emitted via fluorescent resonance energy transfer between the donor fluorophore and the acceptor fluorophore as each nucleotide is incorporated into the growing strand. The sequence is deduced by identifying which base is being incorporated into the growing strand.

Chapter 6. Climate and terrain

Treesearch

James N. Davis

2004-01-01

Our knowledge of the physical requirements of cultivated plants is far advanced in contrast to that of the native and introduced species used in range plantings. Cultivated plants are usually grown as single varieties of a species under specific controlled conditions to ensure maximum yields. Native and introduced range plants often grow in species mixtures on sites...

Distance Teaching: A Catalyst for Curriculum Change for Introducing Vocational Subjects.

ERIC Educational Resources Information Center

Jenkins, Janet; And Others

Distance education offers a set of techniques through which new content can be rapidly and effectively introduced into schools. Its growing importance is due to these key factors: educational expansion, democratization of education, improving quality, and reducing costs. If distance teaching methods are to be used successfully for curriculum…

[History of ureteropelvic junction obstruction repair (pyeloplasty). From Trendelenburg (1886) to the present].

PubMed

Poulakis, V; Witzsch, U; Schultheiss, D; Rathert, P; Becht, E

2004-12-01

The first reconstructive procedure for ureteropelvic junction (UPJ) obstruction was performed by Trendelenburg in 1886. The important milestones in the reconstruction of UPJ are discussed and all available historical papers and reports since 1886 are reviewed. Kuster published the first successful dismembered pyeloplasty 5 years later, but his technique was prone to strictures. In 1892, the application of the Heineke-Mickulicz principle by Fenger resulted in bulking and kinking with obstruction. Plication of the renal pelvis, first introduced by Israel in 1896, was modified by Kelly in 1906. After the principle of the Finney pyloroplasty, von Lichtenberg designed his pyeloplasty in 1921, best suited to cases of high implantation of the ureter. Foley modified flap techniques, first introduced by Schwyzer in 1923 after the application of the Durante pyloroplasty principle, successfully to Y-V pyeloplasty in 1937. Culp and de-Weerd introduced the spiral flap in 1951. Scardino and Prince reported about the vertical flap in 1953. Patel published the extra-long spiral flap technique in 1982. In order to decrease the likelihood of stricture, Nesbit, in 1949, modified Kuster's procedure by utilizing an elliptic anastomosis. In the same year, Anderson and Hynes, published their technique. With the advent of endourology, several minimally invasive procedures were applied: antegrade or retrograde endopyelotomy, balloon dilation, and laparoscopic pyeloplasty. The concept of full-thickness incision of the narrow segment followed by prolonged stenting was first described in 1903 by Albarran and was popularized by Davis in 1943. Several basic principles must be applied in order to ensure successful repair: the resultant anastomosis should be widely patent, performed in a watertight fashion without tension. Endopyelotomy represents an alternative to open surgery.

Basic hydraulic principles of open-channel flow

USGS Publications Warehouse

Jobson, Harvey E.; Froehlich, David C.

1988-01-01

The three basic principles of open-channel-flow analysis--the conservation of mass, energy, and momentum--are derived, explained, and applied to solve problems of open-channel flow. These principles are introduced at a level that can be comprehended by a person with an understanding of the principles of physics and mechanics equivalent to that presented in the first college level course of the subject. The reader is assumed to have a working knowledge of algebra and plane geometry as well as some knowledge of calculus. Once the principles have been derived, a number of example applications are presented that illustrate the computation of flow through culverts and bridges, and over structures, such as dams and weirs. Because resistance to flow is a major obstacle to the successful application of the energy principle to open-channel flow, procedures are outlined for the rational selection of flow resistance coefficients. The principle of specific energy is shown to be useful in the prediction of water-surface profiles both in the qualitative and quantitative sense. (USGS)

A Beach in Your Classroom.

ERIC Educational Resources Information Center

Conn, Kathleen

2001-01-01

Introduces an integrated science activity in which students learn about the principles of superposition, biostratigraphy, and correlation and study the single-celled microorganism foraminifera to learn about marine biology. (YDS)

Six principles of language development: implications for second language learners.

PubMed

Konishi, Haruka; Kanero, Junko; Freeman, Max R; Golinkoff, Roberta Michnick; Hirsh-Pasek, Kathy

2014-01-01

The number of children growing up in dual language environments is increasing in the United States. Despite the apparent benefits of speaking two languages, children learning English as a second language (ESL) often face struggles, as they may experience poverty and impoverished language input at home. Early exposure to a rich language environment is crucial for ESL children's academic success. This article explores how six evidenced-based principles of language learning can be used to provide support for ESL children.

Theories of Matter, Space and Time; Classical theories

NASA Astrophysics Data System (ADS)

Evans, N.; King, S. F.

2017-12-01

This book and its sequel ('Theories of Matter Space and Time: Quantum Theories') are taken from third and fourth year undergraduate Physics courses at Southampton University, UK. The aim of both books is to move beyond the initial courses in classical mechanics, special relativity, electromagnetism, and quantum theory to more sophisticated views of these subjects and their interdependence. The goal is to guide undergraduates through some of the trickier areas of theoretical physics with concise analysis while revealing the key elegance of each subject. The first chapter introduces the key areas of the principle of least action, an alternative treatment of Newtownian dynamics, that provides new understanding of conservation laws. In particular, it shows how the formalism evolved from Fermat's principle of least time in optics. The second introduces special relativity leading quickly to the need and form of four-vectors. It develops four-vectors for all kinematic variables and generalize Newton's second law to the relativistic environment; then returns to the principle of least action for a free relativistic particle. The third chapter presents a review of the integral and differential forms of Maxwell's equations before massaging them to four-vector form so that the Lorentz boost properties of electric and magnetic fields are transparent. Again, it then returns to the action principle to formulate minimal substitution for an electrically charged particle.

Core principles of evolutionary medicine

PubMed Central

Grunspan, Daniel Z; Nesse, Randolph M; Barnes, M Elizabeth; Brownell, Sara E

2018-01-01

Abstract Background and objectives Evolutionary medicine is a rapidly growing field that uses the principles of evolutionary biology to better understand, prevent and treat disease, and that uses studies of disease to advance basic knowledge in evolutionary biology. Over-arching principles of evolutionary medicine have been described in publications, but our study is the first to systematically elicit core principles from a diverse panel of experts in evolutionary medicine. These principles should be useful to advance recent recommendations made by The Association of American Medical Colleges and the Howard Hughes Medical Institute to make evolutionary thinking a core competency for pre-medical education. Methodology The Delphi method was used to elicit and validate a list of core principles for evolutionary medicine. The study included four surveys administered in sequence to 56 expert panelists. The initial open-ended survey created a list of possible core principles; the three subsequent surveys winnowed the list and assessed the accuracy and importance of each principle. Results Fourteen core principles elicited at least 80% of the panelists to agree or strongly agree that they were important core principles for evolutionary medicine. These principles over-lapped with concepts discussed in other articles discussing key concepts in evolutionary medicine. Conclusions and implications This set of core principles will be helpful for researchers and instructors in evolutionary medicine. We recommend that evolutionary medicine instructors use the list of core principles to construct learning goals. Evolutionary medicine is a young field, so this list of core principles will likely change as the field develops further. PMID:29493660

Core principles of evolutionary medicine: A Delphi study.

PubMed

Grunspan, Daniel Z; Nesse, Randolph M; Barnes, M Elizabeth; Brownell, Sara E

2018-01-01

Evolutionary medicine is a rapidly growing field that uses the principles of evolutionary biology to better understand, prevent and treat disease, and that uses studies of disease to advance basic knowledge in evolutionary biology. Over-arching principles of evolutionary medicine have been described in publications, but our study is the first to systematically elicit core principles from a diverse panel of experts in evolutionary medicine. These principles should be useful to advance recent recommendations made by The Association of American Medical Colleges and the Howard Hughes Medical Institute to make evolutionary thinking a core competency for pre-medical education. The Delphi method was used to elicit and validate a list of core principles for evolutionary medicine. The study included four surveys administered in sequence to 56 expert panelists. The initial open-ended survey created a list of possible core principles; the three subsequent surveys winnowed the list and assessed the accuracy and importance of each principle. Fourteen core principles elicited at least 80% of the panelists to agree or strongly agree that they were important core principles for evolutionary medicine. These principles over-lapped with concepts discussed in other articles discussing key concepts in evolutionary medicine. This set of core principles will be helpful for researchers and instructors in evolutionary medicine. We recommend that evolutionary medicine instructors use the list of core principles to construct learning goals. Evolutionary medicine is a young field, so this list of core principles will likely change as the field develops further.

Alternative to the Palatini method: A new variational principle

DOE Office of Scientific and Technical Information (OSTI.GOV)

Goenner, Hubert

2010-06-15

A variational principle is suggested within Riemannian geometry, in which an auxiliary metric and the Levi Civita connection are varied independently. The auxiliary metric plays the role of a Lagrange multiplier and introduces nonminimal coupling of matter to the curvature scalar. The field equations are 2nd order PDEs and easier to handle than those following from the so-called Palatini method. Moreover, in contrast to the latter method, no gradients of the matter variables appear. In cosmological modeling, the physics resulting from the alternative variational principle will differ from the modeling using the standard Palatini method.

On Large Time Behavior and Selection Principle for a Diffusive Carr-Penrose Model

NASA Astrophysics Data System (ADS)

Conlon, Joseph G.; Dabkowski, Michael; Wu, Jingchen

2016-04-01

This paper is concerned with the study of a diffusive perturbation of the linear LSW model introduced by Carr and Penrose. A main subject of interest is to understand how the presence of diffusion acts as a selection principle, which singles out a particular self-similar solution of the linear LSW model as determining the large time behavior of the diffusive model. A selection principle is rigorously proven for a model which is a semiclassical approximation to the diffusive model. Upper bounds on the rate of coarsening are also obtained for the full diffusive model.

Green extraction of natural products: concept and principles.

PubMed

Chemat, Farid; Vian, Maryline Abert; Cravotto, Giancarlo

2012-01-01

The design of green and sustainable extraction methods of natural products is currently a hot research topic in the multidisciplinary area of applied chemistry, biology and technology. Herein we aimed to introduce the six principles of green-extraction, describing a multifaceted strategy to apply this concept at research and industrial level. The mainstay of this working protocol are new and innovative technologies, process intensification, agro-solvents and energy saving. The concept, principles and examples of green extraction here discussed, offer an updated glimpse of the huge technological effort that is being made and the diverse applications that are being developed.

A case study of organisational Cultural Competence in mental healthcare.

PubMed

Adamson, Jean; Warfa, Nasir; Bhui, Kamaldeep

2011-09-15

Ensuring Cultural Competence (CC) in health care is a mechanism to deliver culturally appropriate care and optimise recovery. In policies that promote cultural competence, the training of mental health practitioners is a key component of a culturally competent organisation. This study examines staff perceptions of CC and the integration of CC principles in a mental healthcare organisation. The purpose is to show interactions between organisational and individual processes that help or hinder recovery orientated services. We carried out a case study of a large mental health provider using a cultural competence needs analysis. We used structured and semi-structured questionnaires to explore the perceptions of healthcare professionals located in one of the most ethnically and culturally diverse areas of England, its capital city London. There was some evidence that clinical staff were engaged in culturally competent activities. We found a growing awareness of cultural competence amongst staff in general, and many had attended training. However, strategic plans and procedures that promote cultural competence tended to not be well communicated to all frontline staff; whilst there was little understanding at corporate level of culturally competent clinical practices. The provider organisation had commenced a targeted recruitment campaign to recruit staff from under-represented ethnic groups and it developed collaborative working patterns with service users. There is evidence to show tentative steps towards building cultural competence in the organisation. However, further work is needed to embed cultural competence principles and practices at all levels of the organisation, for example, by introducing monitoring systems that enable organisations to benchmark their performance as a culturally capable organisation.

A case study of organisational cultural competence in mental healthcare

PubMed Central

2011-01-01

Background Ensuring Cultural Competence (CC) in health care is a mechanism to deliver culturally appropriate care and optimise recovery. In policies that promote cultural competence, the training of mental health practitioners is a key component of a culturally competent organisation. This study examines staff perceptions of CC and the integration of CC principles in a mental healthcare organisation. The purpose is to show interactions between organisational and individual processes that help or hinder recovery orientated services. Methods We carried out a case study of a large mental health provider using a cultural competence needs analysis. We used structured and semi-structured questionnaires to explore the perceptions of healthcare professionals located in one of the most ethnically and culturally diverse areas of England, its capital city London. Results There was some evidence that clinical staff were engaged in culturally competent activities. We found a growing awareness of cultural competence amongst staff in general, and many had attended training. However, strategic plans and procedures that promote cultural competence tended to not be well communicated to all frontline staff; whilst there was little understanding at corporate level of culturally competent clinical practices. The provider organisation had commenced a targeted recruitment campaign to recruit staff from under-represented ethnic groups and it developed collaborative working patterns with service users. Conclusion There is evidence to show tentative steps towards building cultural competence in the organisation. However, further work is needed to embed cultural competence principles and practices at all levels of the organisation, for example, by introducing monitoring systems that enable organisations to benchmark their performance as a culturally capable organisation. PMID:21920044

A Novel MS-Cleavable Azo Cross-Linker for Peptide Structure Analysis by Free Radical Initiated Peptide Sequencing (FRIPS)

NASA Astrophysics Data System (ADS)

Iacobucci, Claudio; Hage, Christoph; Schäfer, Mathias; Sinz, Andrea

2017-10-01

The chemical cross-linking/mass spectrometry (MS) approach is a growing research field in structural proteomics that allows gaining insights into protein conformations. It relies on creating distance constraints between cross-linked amino acid side chains that can further be used to derive protein structures. Currently, the most urgent task for designing novel cross-linking principles is an unambiguous and automated assignment of the created cross-linked products. Here, we introduce the homobifunctional, amine-reactive, and water soluble cross-linker azobisimidoester (ABI) as a prototype of a novel class of cross-linkers. The ABI-linker possesses an innovative modular scaffold combining the benefits of collisional activation lability with open shell chemistry. This MS-cleavable cross-linker can be efficiently operated via free radical initiated peptide sequencing (FRIPS) in positive ionization mode. Our proof-of-principle study challenges the gas phase behavior of the ABI-linker for the three amino acids, lysine, leucine, and isoleucine, as well as the model peptide thymopentin. The isomeric amino acids leucine and isoleucine could be discriminated by their characteristic side chain fragments. Collisional activation experiments were conducted via positive electrospray ionization (ESI) on two Orbitrap mass spectrometers. The ABI-mediated formation of odd electron product ions in MS/MS and MS3 experiments was evaluated and compared with a previously described azo-based cross-linker. All cross-linked products were amenable to automated analysis by the MeroX software, underlining the future potential of the ABI-linker for structural proteomics studies. [Figure not available: see fulltext.

Raising native plants in nurseries: basic concepts

Treesearch

R. Kasten Dumroese; Thomas D. Landis; Tara Luna

2012-01-01

Growing native plants can be fun, challenging, and rewarding. This booklet, particularly the first chapter that introduces important concepts, is for the novice who wants to start growing native plants as a hobby; however, it can also be helpful to someone with a bit more experience who is wondering about starting a nursery. The second chapter provides basic...

Iranian Critical ELT: A Belated but Growing Intellectual Shift in Iranian ELT Community

ERIC Educational Resources Information Center

Aghagolzadeh, Ferdows; Davari, Hossein

2014-01-01

Reviewing and discussing the development of critical studies in the field of applied linguistics in general and English language teaching (ELT) in particular in Iran, this paper attempts to highlight the main contributions in this field. Introducing a new growing critical-oriented shift in Iranian ELT community as the one which has been mostly…

Ulex europaeus L.: common gorse

Treesearch

George P. Markin

2008-01-01

Gorse is a leafless, spined shrub introduced from western Europe. In its homeland, it grows 1 to 2 m tall and is primarily a nonaggressive invader of disturbed areas that is recognized as useful for wildlife protection, soil stabilization, and revegetation. It has also been cultivated as an ornamental and as forage for livestock, which feed on the soft, new growing...

Lifelong Learning in Italy: The Extent to Which Vocational Education and Training Policy Is Nurturing Lifelong Learning in Italy. CEDEFOP Panorama Series.

ERIC Educational Resources Information Center

Richini, Pierluigi

This report assesses the extent to which lifelong learning (LL) is being implemented in vocational education and training (VET) in Italy. Section 1 depicts the general situation regarding policies and innovations introduced at the statutory level to implement LL objectives. It introduces the principle of integration around which policy is…

Merging Environmental Health and Education

ERIC Educational Resources Information Center

Guth, Douglas J.

2016-01-01

Community colleges nationwide are retrofitting their campuses to meet best environmental principles, creating comprehensive "living laboratories" where participants have a direct impact on reducing an institution's carbon footprint. Environmental stewardship is a growing priority among millennials, observers say. Sixty-six percent of…

Population Education: Lessons for a Changing World.

ERIC Educational Resources Information Center

Wasserman, Pamela

1996-01-01

Considers the global effects of a rapidly growing population combined with dwindling natural resources and how these issues might be addressed in the classroom. Includes a population education lesson plan, guiding principles, list of resources, and suggested activities. (MJP)

Principles for Health System Capacity Planning: Insights for Healthcare Leaders.

PubMed

Shaw, James; Wong, Ivy; Griffin, Bailey; Robertson, Michael; Bhatia, R Sacha

2017-01-01

Jurisdictions across Canada and around the world face the challenge of planning high-performing and sustainable health systems in response to growing healthcare demands. In this paper, we report on the process of developing principles for health system capacity planning by the Ministry of Health and Long-Term Care in Ontario. Integrating the results of a literature review on health system planning and a symposium with representatives from local health integration networks, we describe the following six principles in detail: (1) develop an aspirational vision, (2) establish clear leadership, (3) commit to stakeholder engagement, (4) engage patients and the public, (5) build analytics infrastructure and (6) revise policy when necessary.

Integrating the Principles of Effective Intervention into Batterer Intervention Programming: The Case for Moving Toward More Evidence-Based Programming.

PubMed

Radatz, Dana L; Wright, Emily M

2016-01-01

The majority of batterer intervention program (BIP) evaluations have indicated they are marginally effective in reducing domestic violence recidivism. Meanwhile, correctional programs used to treat a variety of offenders (e.g., substance users, violent offenders, and so forth) that adhere to the "principles of effective intervention" (PEI) have reported significant reductions in recidivism. This article introduces the PEI-the principles on which evidence-based practices in correctional rehabilitation are based-and identifies the degree to which they are currently integrated into BIPs. The case is made that batterer programs could be more effective if they incorporate the PEI. Recommendations for further integration of the principles into BIPs are also provided. © The Author(s) 2015.

The foundational principles as psychological lodestars: Theoretical inspiration and empirical direction in rehabilitation psychology.

PubMed

Dunn, Dana S; Ehde, Dawn M; Wegener, Stephen T

2016-02-01

Historically, the Foundational Principles articulated by Wright (1983) and others guided theory development, research and scholarship, and practice in rehabilitation psychology. In recent decades, these principles have become more implicit and less explicit or expressive in the writings and work of rehabilitation professionals. We believe that the Foundational Principles are essential lodestars for working with people with disabilities that can guide inquiry, practice, and service. To introduce this special issues, this commentary identifies and defines key Foundational Principles, including, for example, Lewin's (1935) person-environment relation, adjustment to disability, the malleability of self-perceptions of bodily states, and the importance of promoting dignity for people with disabilities. We then consider the role the Foundational Principles play in the articles appearing in this special issue. We close by considering some new principles and their potential utility in rehabilitation settings. Readers in rehabilitation psychology and aligned areas (e.g., social-personality psychology, health psychology, rehabilitation therapist, psychiatry, and nursing) are encouraged to consider how the Foundational Principles underlie and can shape their research and practice. (c) 2016 APA, all rights reserved).

A mechanism producing power law etc. distributions

NASA Astrophysics Data System (ADS)

Li, Heling; Shen, Hongjun; Yang, Bin

2017-07-01

Power law distribution is playing an increasingly important role in the complex system study. Based on the insolvability of complex systems, the idea of incomplete statistics is utilized and expanded, three different exponential factors are introduced in equations about the normalization condition, statistical average and Shannon entropy, with probability distribution function deduced about exponential function, power function and the product form between power function and exponential function derived from Shannon entropy and maximal entropy principle. So it is shown that maximum entropy principle can totally replace equal probability hypothesis. Owing to the fact that power and probability distribution in the product form between power function and exponential function, which cannot be derived via equal probability hypothesis, can be derived by the aid of maximal entropy principle, it also can be concluded that maximal entropy principle is a basic principle which embodies concepts more extensively and reveals basic principles on motion laws of objects more fundamentally. At the same time, this principle also reveals the intrinsic link between Nature and different objects in human society and principles complied by all.

Theoretical principles for biology: Variation.

PubMed

Montévil, Maël; Mossio, Matteo; Pocheville, Arnaud; Longo, Giuseppe

2016-10-01

Darwin introduced the concept that random variation generates new living forms. In this paper, we elaborate on Darwin's notion of random variation to propose that biological variation should be given the status of a fundamental theoretical principle in biology. We state that biological objects such as organisms are specific objects. Specific objects are special in that they are qualitatively different from each other. They can undergo unpredictable qualitative changes, some of which are not defined before they happen. We express the principle of variation in terms of symmetry changes, where symmetries underlie the theoretical determination of the object. We contrast the biological situation with the physical situation, where objects are generic (that is, different objects can be assumed to be identical) and evolve in well-defined state spaces. We derive several implications of the principle of variation, in particular, biological objects show randomness, historicity and contextuality. We elaborate on the articulation between this principle and the two other principles proposed in this special issue: the principle of default state and the principle of organization. Copyright © 2016 Elsevier Ltd. All rights reserved.

After the smoke has cleared: evaluation of the impact of a new national smoke-free law in New Zealand.

PubMed

Edwards, R; Thomson, G; Wilson, N; Waa, A; Bullen, C; O'Dea, D; Gifford, H; Glover, M; Laugesen, M; Woodward, A

2008-02-01

The New Zealand 2003 Smoke-free Environments Amendment Act (SEAA) extended existing restrictions on smoking in office and retail workplaces by introducing smoking bans in bars, casinos, members' clubs, restaurants and nearly all other workplaces from 10 December 2004. To evaluate the implementation and outcomes of aspects of the SEAA relating to smoke-free indoor workplaces and public places, excluding schools and early learning centres. Data were gathered on public and stakeholder attitudes and support for smoke-free policies; dissemination of information, enforcement activities and compliance; exposure to secondhand smoke (SHS) in the workplace; changes in health outcomes linked to SHS exposure; exposure to SHS in homes; smoking prevalence and smoking related behaviours; and economic impacts. Surveys suggested growing majority support for the SEAA and its underlying principles among the public and bar managers. There was evidence of high compliance in bars and pubs, where most enforcement problems were expected. Self reported data suggested that SHS exposure in the workplace, the primary objective of the SEAA, decreased significantly from around 20% in 2003, to 8% in 2006. Air quality improved greatly in hospitality venues. Reported SHS exposure in homes also reduced significantly. There was no clear evidence of a short term effect on health or on adult smoking prevalence, although calls to the smoking cessation quitline increased despite reduced expenditure on smoking cessation advertising. Available data suggested a broadly neutral economic impact, including in the tourist and hospitality sectors. The effects of the legislation change were favourable from a public health perspective. Areas for further investigation and possible regulation were identified such as SHS related pollution in semi-enclosed outdoor areas. The study adds to a growing body of literature documenting the positive impact of comprehensive smoke-free legislation. The scientific and public health case for introducing comprehensive smoke-free legislation that covers all indoor public places and workplaces is now overwhelming, and should be a public health priority for legislators across the world as part of the globalization of effective public health policy to control the tobacco epidemic.

Economic Evaluation of Health IT.

PubMed

Luzi, Daniela; Pecoraro, Fabrizio; Tamburis, Oscar

2016-01-01

Economic evaluation in health care supports decision makers in prioritizing interventions and maximizing the available limited resources for social benefits. Health Information Technology (health IT) constitutes a promising strategy to improve the quality and delivery of health care. However, to determine whether the appropriate health IT solution has been selected in a specific health context, its impact on the clinical and organizational process, on costs, on user satisfaction as well as on patient outcomes, a rigorous and multidimensional evaluation analysis is necessary. Starting from the principles of evaluation introduced since the mid-1980s within the Health Technology Assessment (HTA) guidelines, this contribution provides an overview of the main challenging issues related to the complex task of performing an economic evaluation of health IT. A set of necessary key principles to deliver a proper design and implementation of a multidimensional economic evaluation study is described, focusing in particular on the classification of costs and outcomes as well as on the type of economic analysis to be performed. A case study is eventually described to show how the key principles introduced are applied.

Energy production for environmental issues in Turkey

NASA Astrophysics Data System (ADS)

Yuksel, Ibrahim; Arman, Hasan; Halil Demirel, Ibrahim

2017-11-01

Due to the diversification efforts of energy sources, use of natural gas that was newly introduced into Turkish economy, has been growing rapidly. Turkey has large reserves of coal, particularly of lignite. The proven lignite reserves are 8.0 billion tons. The estimated total possible reserves are 30 billion tons. Turkey, with its young population and growing energy demand per person, its fast growing urbanization, and its economic development, has been one of the fast growing power markets of the world for the last two decades. It is expected that the demand for electric energy in Turkey will be 580 billion kWh by the year 2020. Turkey's electric energy demand is growing about 6-8% yearly due to fast economic growing. This paper deals with energy demand and consumption for environmental issues in Turkey.

Status of dye solar cell technology as a guideline for further research.

PubMed

Hinsch, Andreas; Veurman, Welmoed; Brandt, Henning; Jensen, Katrine Flarup; Mastroianni, Simone

2014-04-14

Recently, the first commercial dye solar cell (DSC) products based on the mesoscopic principle were successfully launched. Introduction to the market has been accompanied by a strong increase in patent applications in the field during the last four years, which is a good indication of further commercialization activity. Materials and cell concepts have been developed to such extent that easy uptake by industrial manufacturers is possible. The critical phase for broad market acceptance has therefore been reached, which implies focusing on standardization-related research topics. In parallel the number of scientific publications on DSC is growing further (>3500 since 2012), and the range of new or renewed fundamental topics is broadening. A recent example is the introduction of the perovskite mesoscopic cell, for which an efficiency of 14.1% has been certified. Thus, a growing divergence between market introduction and research could be the consequence. Herein, an attempt is made to show that such an unwanted divergence can be prevented, for example, by developing suitable reference-type cell and module concepts as well as manufacturing routes. An in situ cell manufacturing concept that can be applied to mesoscopic-based solar cells in a broader sense is proposed. As a guideline for future module concepts, recent results for large-area, glass-frit-sealed DSC modules from efficiency studies (6.6% active-area efficiency) and outdoor analysis are discussed. Electroluminescence measurements are introduced as a quality tool. Another important point that is addressed is sustainability, which affects both market introduction and the direction of fundamental research. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

An Interdisciplinary Education of Sustainability, Energy and Green Economics

NASA Astrophysics Data System (ADS)

Sikand, M. V.; Mazzatenta, C.; Wong, K.; Socha, A.

2017-12-01

This following project demonstrates an interdisciplinary method of teaching Sustainability, Energy and Green Economics. It is shown that an interdisciplinary approach to introduce students to the foundations of sustainability strongly connects education with real world applications, and highlights the growing influence of sustainable practices on the world at large. The authors will present results from the interdisciplinary course "Sustainability, Energy and Green Economy" taught at the Center of Sustainable Energy, Bronx Community College, City University of New York (CSE-BCC-CUNY) by faculty from Physics, Chemistry, Biology. The course curriculum covers the relationship of humans within their environment, the facts of climate change, an analysis of the current global energy portfolio, the burgeoning renewable energy sector, and connections between consumption and quality of life. The students are exposed to empirical data and asked to evaluate trends to ascertain the future energy and resource demands of a growing global population. The students are lead through an estimation of their own carbon footprint. Emphasis is made on the concept of `Life Cycle Analysis' and how such analyses can be used to create market value and a "green product". The interdisciplinary approach to teach students on how the principles of sustainability are building the green economy and how to build a successful career within today's workforce encourages students to apply the critical lens of sustainability to all aspects of their personal lives, as well as local, regional and global economies. The authors will present data collected by students to formulate and articulate a hypothesis specifically related to the sustainability of societal and economic market trends.

Teaching Principles of Patient-Centered Care During Radiology Residency.

PubMed

Miller, Matthew M; Slanetz, Priscilla J; Lourenco, Ana P; Eisenberg, Ronald L; Kung, Justin W

2016-07-01

Patient-centered healthcare delivery has become increasingly established as a cornerstone of quality medical care, but teaching these principles in a radiology residency setting is often difficult and ineffective in a traditional lecture format. We developed a novel educational session in which actual patient letters about a healthcare provider are used to facilitate a case-based discussion of key principles of patient-centered care. A novel patient letter-facilitated, case-based session was conducted at two different university-based teaching institutions. Prior to the educational session, patient letters introducing the principles of patient-centered care were distributed to residents for review. During the session, radiology-specific cases were discussed in the context of the principles introduced by the letters. A post-session survey was administered to evaluate the efficacy and usefulness of the session. Forty-six of the 61 session attendees (75%) completed the post session survey. Most respondents (93%) preferred this case-based, interactive session to a typical didactic session. A majority of the residents indicated that both the patient letters (64%) and radiology specific cases (73%) helped them think differently about how they interact with patients. They indicated that the session enhanced their understanding of professionalism (3.7 out of 5.0 [95% CI 3.4-4.0]) and increased their motivation to become more patient-centered (3.0 out of 4.0 [95% CI 2.8-3.3]). Our findings suggest that patient letter-facilitated, case-based sessions may influence resident attitudes regarding the principles of patient-centered care and may help to increase resident motivation to become more patient-centered in their own practice. Copyright © 2016 The Association of University Radiologists. Published by Elsevier Inc. All rights reserved.

Introducing a High Bounce Ball Unit

ERIC Educational Resources Information Center

Bernardo, Pat

2004-01-01

Those growing up in the 1950s, 60s or 70s are familiar with how physically active children were before computers and video games were introduced. Each neighborhood had its own version of the various games that were played. Many of these games involved a pink rubber ball called a Spaldeen. They were everywhere and almost everyone had one. These…

Patterns of hybridization among cutthroat trout and rainbow trout in northern Rocky Mountain streams

Treesearch

Kevin S. McKelvey; Michael K. Young; Taylor M. Wilcox; Daniel M. Bingham; Kristine L. Pilgrim; Michael K. Schwartz

2016-01-01

Introgressive hybridization between native and introduced species is a growing conservation concern. For native cutthroat trout and introduced rainbow trout in western North America, this process is thought to lead to the formation of hybrid swarms and the loss of monophyletic evolutionary lineages. Previous studies of this phenomenon, however, indicated that...

The New Phys Ed.: Dodgeball Is Passe; Schools Are Teaching Lifelong Fitness

ERIC Educational Resources Information Center

Schachter, Ron

2011-01-01

A growing number of physical education teachers are introducing a new kind of P.E. in schools, emphasizing lifelong activities such as running, cycling, yoga, and skateboarding, in an attempt to make exercise more engaging--and lifelong--for elementary and middle school students. The new generation of P.E. classes is introducing youngsters to…

DOE Office of Scientific and Technical Information (OSTI.GOV)

Gallavotti, G.

It is shown that the chaoticity hypothesis recently introduced in statistical mechanics, which is analogous to Ruelle`s principle for turbulence, implies the Onsager reciprocity and the fluctuation-dissipation theorem in various reversible models for coexisting transport phenomena.

Hydrogen adatom interaction on graphene: A first principles study

DOE PAGES

Zhang, Wei; Lu, Wen-Cai; Zhang, Hong-Xing; ...

2018-05-01

Interaction between two hydrogen adatoms on graphene was studied by first-principles calculations. We showed that there is an attraction between two H adatoms on graphene. However, the strength of interaction between two hydrogen adatoms and magnetic properties of graphene are strongly dependent on the residence of the two adatoms on the graphene sublattices. Hydrogen adatoms introduce lattice distortion and electron localization in graphene which mediate the attractive interaction between the two H adatoms.

Brst-Bfv Quantization and the Schwinger Action Principle

NASA Astrophysics Data System (ADS)

Garcia, J. Antonio; Vergara, J. David; Urrutia, Luis F.

We introduce an operator version of the BRST-BFV effective action for arbitrary systems with first class constraints. Using the Schwinger action principle we calculate the propagators corresponding to: (i) the parametrized nonrelativistic free particle, (ii) the relativistic free particle and (iii) the spinning relativistic free particle. Our calculation correctly imposes the BRST invariance at the end points. The precise use of the additional boundary terms required in the description of fermionic variables is incorporated.

Application of the no-signaling principle to obtain quantum cloners for any allowed value of fidelity

NASA Astrophysics Data System (ADS)

Gedik, Z.; Çakmak, B.

2013-04-01

Special relativity forbids superluminal influences. Using only the no-signaling principle and an assumption about the form of the Schmidt decomposition, we show that for any allowed fidelity there is a unique approximate qubit cloner which can be written explicitly. We introduce the prime cloners whose fidelities have multiplicative property and show that the fidelity of the prime cloners for the infinite copy limit is 1/2.

Demonstration of Human-Autonomy Teaming Principles

NASA Technical Reports Server (NTRS)

Shively, Robert Jay

2016-01-01

Known problems with automation include lack of mode awareness, automation brittleness, and risk of miscalibrated trust. Human-Autonomy Teaming (HAT) is essential for improving these problems. We have identified some critical components of HAT and ran a part-task study to introduce these components to a ground station that supports flight following of multiple aircraft. Our goal was to demonstrate, evaluate, and refine HAT principles. This presentation provides a brief summary of the study and initial findings.

Hydrogen adatom interaction on graphene: A first principles study

DOE Office of Scientific and Technical Information (OSTI.GOV)

Zhang, Wei; Lu, Wen-Cai; Zhang, Hong-Xing

Interaction between two hydrogen adatoms on graphene was studied by first-principles calculations. We showed that there is an attraction between two H adatoms on graphene. However, the strength of interaction between two hydrogen adatoms and magnetic properties of graphene are strongly dependent on the residence of the two adatoms on the graphene sublattices. Hydrogen adatoms introduce lattice distortion and electron localization in graphene which mediate the attractive interaction between the two H adatoms.

Sustainable Development in Engineering Education

ERIC Educational Resources Information Center

Taoussanidis, Nikolaos N.; Antoniadou, Myrofora A.

2006-01-01

The principles and practice of environmentally and socially sustainable engineering are in line with growing community expectations and the strengthening voice of civil society in engineering interventions. Pressures towards internationalization and globalization are reflected in new course accreditation criteria and higher education structures.…

Digital Renegades in America: Changing Metaphors to Realize the Potential of Technology in Education

ERIC Educational Resources Information Center

Smith, Thomas

2013-01-01

In 2001, Marc Prensky introduced a new metaphor to the educational landscape. He suggested that the rising generation were growing up in a time so filled with new media that they were "digital natives," while those born earlier were "digital immigrants." In this view, because the digital natives are growing up immersed in a sea…

Validation of a multi-criteria evaluation model for animal welfare.

PubMed

Martín, P; Czycholl, I; Buxadé, C; Krieter, J

2017-04-01

The aim of this paper was to validate an alternative multi-criteria evaluation system to assess animal welfare on farms based on the Welfare Quality® (WQ) project, using an example of welfare assessment of growing pigs. This alternative methodology aimed to be more transparent for stakeholders and more flexible than the methodology proposed by WQ. The WQ assessment protocol for growing pigs was implemented to collect data in different farms in Schleswig-Holstein, Germany. In total, 44 observations were carried out. The aggregation system proposed in the WQ protocol follows a three-step aggregation process. Measures are aggregated into criteria, criteria into principles and principles into an overall assessment. This study focussed on the first two steps of the aggregation. Multi-attribute utility theory (MAUT) was used to produce a value of welfare for each criterion and principle. The utility functions and the aggregation function were constructed in two separated steps. The MACBETH (Measuring Attractiveness by a Categorical-Based Evaluation Technique) method was used for utility function determination and the Choquet integral (CI) was used as an aggregation operator. The WQ decision-makers' preferences were fitted in order to construct the utility functions and to determine the CI parameters. The validation of the MAUT model was divided into two steps, first, the results of the model were compared with the results of the WQ project at criteria and principle level, and second, a sensitivity analysis of our model was carried out to demonstrate the relative importance of welfare measures in the different steps of the multi-criteria aggregation process. Using the MAUT, similar results were obtained to those obtained when applying the WQ protocol aggregation methods, both at criteria and principle level. Thus, this model could be implemented to produce an overall assessment of animal welfare in the context of the WQ protocol for growing pigs. Furthermore, this methodology could also be used as a framework in order to produce an overall assessment of welfare for other livestock species. Two main findings are obtained from the sensitivity analysis, first, a limited number of measures had a strong influence on improving or worsening the level of welfare at criteria level and second, the MAUT model was not very sensitive to an improvement in or a worsening of single welfare measures at principle level. The use of weighted sums and the conversion of disease measures into ordinal scores should be reconsidered.

Chemical Safety Alert: Safer Technology and Alternatives

EPA Pesticide Factsheets

This alert is intended to introduce safer technology concepts and general approaches, explains the concepts and principles, and gives brief examples of the integration of safer technologies into facility risk management activities.

Ballooning Interest in Science.

ERIC Educational Resources Information Center

Kim, Hy

1992-01-01

Presents an activity in which students construct model hot air balloons to introduce the concepts of convection current, the principles of Charles' gas law, and three-dimensional geometric shapes. Provides construction and launching instructions. (MDH)

Introducing Empirical Exercises into Principles of Economics.

ERIC Educational Resources Information Center

McGrath, Eileen L.; Tiemann, Thomas K.

1985-01-01

A rationale for requiring undergraduate students to become familiar with the empirical side of economics is presented, and seven exercises that can be used in an introductory course are provided. (Author/RM)

Market-Based and System-Wide Fuel Cycle Optimization

DOE Office of Scientific and Technical Information (OSTI.GOV)

Wilson, Paul Philip Hood; Scopatz, Anthony; Gidden, Matthew

This work introduces automated optimization into fuel cycle simulations in the Cyclus platform. This includes system-level optimizations, seeking a deployment plan that optimizes the performance over the entire transition, and market-level optimization, seeking an optimal set of material trades at each time step. These concepts were introduced in a way that preserves the flexibility of the Cyclus fuel cycle framework, one of its most important design principles.

Current Practices in Constructing and Evaluating Assurance Cases With Applications to Aviation

NASA Technical Reports Server (NTRS)

Rinehart, David J.; Knight, John C.; Rowanhill, Jonathan

2015-01-01

This report introduces and provides an overview of assurance cases including theory, practice, and evaluation. This report includes a section that introduces the principles, terminology, and history of assurance cases. The core of the report presents twelve example uses of assurance cases from a range of domains, using a novel classification scheme. The report also reviews the state of the art in assurance case evaluation methods.

Feynman’s clock, a new variational principle, and parallel-in-time quantum dynamics

PubMed Central

McClean, Jarrod R.; Parkhill, John A.; Aspuru-Guzik, Alán

2013-01-01

We introduce a discrete-time variational principle inspired by the quantum clock originally proposed by Feynman and use it to write down quantum evolution as a ground-state eigenvalue problem. The construction allows one to apply ground-state quantum many-body theory to quantum dynamics, extending the reach of many highly developed tools from this fertile research area. Moreover, this formalism naturally leads to an algorithm to parallelize quantum simulation over time. We draw an explicit connection between previously known time-dependent variational principles and the time-embedded variational principle presented. Sample calculations are presented, applying the idea to a hydrogen molecule and the spin degrees of freedom of a model inorganic compound, demonstrating the parallel speedup of our method as well as its flexibility in applying ground-state methodologies. Finally, we take advantage of the unique perspective of this variational principle to examine the error of basis approximations in quantum dynamics. PMID:24062428

Copernicus, Kant, and the anthropic cosmological principles

NASA Astrophysics Data System (ADS)

Roush, Sherrilyn

In the last three decades several cosmological principles and styles of reasoning termed 'anthropic' have been introduced into physics research and popular accounts of the universe and human beings' place in it. I discuss the circumstances of 'fine tuning' that have motivated this development, and what is common among the principles. I examine the two primary principles, and find a sharp difference between these 'Weak' and 'Strong' varieties: contrary to the view of the progenitors that all anthropic principles represent a departure from Copernicanism in cosmology, the Weak Anthropic Principle is an instance of Copernicanism. It has close affinities with the step of Copernicus that Immanuel Kant took himself to be imitating in the 'critical' turn that gave rise to the Critique of Pure Reason. I conclude that the fact that a way of going about natural science mentions human beings is not sufficient reason to think that it is a subjective approach; in fact, it may need to mention human beings in order to be objective.

A new electrophoretic focusing principle: focusing of nonamphoteric weak ionogenic analytes using inverse electromigration dispersion profiles.

PubMed

Gebauer, Petr; Malá, Zdena; Bocek, Petr

2010-03-01

This contribution introduces a new separation principle in CE which offers focusing of weak nonamphoteric ionogenic species and their inherent transport to the detector. The prerequisite condition for application of this principle is the existence of an inverse electromigration dispersion profile, i.e. a profile where pH is decreasing toward the anode or cathode for focusing of anionic or cationic weak analytes, respectively. The theory presented defines the principal conditions under which an analyte is focused on a profile of this type. Since electromigration dispersion profiles are migrating ones, the new principle offers inherent transport of focused analytes into the detection cell. The focusing principle described utilizes a mechanism different from both CZE (where separation is based on the difference in mobilities) and IEF (where separation is based on difference in pI), and hence, offers another separation dimension in CE. The new principle and its theory presented here are supplemented by convincing experiments as their proof.

First-principles calculations reveal controlling principles for carrier mobilities in semiconductors

DOE PAGES

Wu, Yu -Ning; Zhang, Xiaoguang; Pantelides, Sokrates T.; ...

2016-10-11

It has long been believed that carrier mobilities in semiconductors can be calculated by Fermi s golden rule (Born approximation). Phenomenological models for scattering amplitudes are typically used for engineering- level device modeling. Here we introduce a parameter-free, first-principles approach based on complex- wavevector energy bands that does not invoke the Born approximation. We show that phonon-limited mobility is controlled by low-resistivity percolation paths and that in ionized-impurity scattering one must account for the effect of the screening charge, which cancels most of the Coulomb tail.Finally, calculated electron mobilities in silicon are in agreement with experimental data.

Life on the arc: principle-centered comprehensive care.

PubMed

Fohey, T; Cassidy, J L

1998-01-01

Today's dental practice is experiencing an evolution in the manner through which new materials and techniques are marketed and introduced. An increasing concern among the patient population regarding aesthetics contributes to the acceptance of a commodity dental philosophy, without questioning the reliability of the technique or new material. A principle-centered practice differentiates the product marketing from the viability of a restorative material in vivo. This article discusses the concept of a principle-centered practice and describes how to place quality products in a balanced system in which harmony exits between all components of the masticatory system: the teeth, the muscles, and the temporomandibular joints.

A different method for calculation of the deflection angle of light passing close to a massive object by Fermat’s principle

DOE Office of Scientific and Technical Information (OSTI.GOV)

Akkus, Harun, E-mail: physicisthakkus@gmail.com

2013-12-15

We introduce a method for calculating the amount of deflection angle of light passing close to a massive object. It is based on Fermat’s principle. The varying refractive index of medium around the massive object is obtained from the Buckingham pi-theorem. Highlights: •A different and simpler method for the calculation of deflection angle of light. •Not a curved space, only 2-D Euclidean space. •Getting a varying refractive index from the Buckingham pi-theorem. •Obtaining the some results of general relativity from Fermat’s principle.

Urban Space Innovation - “10+” Principles through Designing the New Image of the Existing Shopping Mall in Csepel, Hungary

NASA Astrophysics Data System (ADS)

Gyergyak, Janos

2017-10-01

The first part of the paper is about to introduce the principles of “placemaking” as an innovation and important tool of the cities in the 21st century. The process helps designers to transform the spaces of “nobody” to a community-based space for supporting the connection among humans. The second part of the paper shows the process of the used principles by the author for designing the new image of the existing shopping mall in Csepel, Hungary. This work was selected as one of the best design ideas for renewing the existing underutilized space.

Fundamentals of Pharmacogenetics in Personalized, Precision Medicine.

PubMed

Valdes, Roland; Yin, DeLu Tyler

2016-09-01

This article introduces fundamental principles of pharmacogenetics as applied to personalized and precision medicine. Pharmacogenetics establishes relationships between pharmacology and genetics by connecting phenotypes and genotypes in predicting the response of therapeutics in individual patients. We describe differences between precision and personalized medicine and relate principles of pharmacokinetics and pharmacodynamics to applications in laboratory medicine. We also review basic principles of pharmacogenetics, including its evolution, how it enables the practice of personalized therapeutics, and the role of the clinical laboratory. These fundamentals are a segue for understanding specific clinical applications of pharmacogenetics described in subsequent articles in this issue. Copyright © 2016 Elsevier Inc. All rights reserved.

Brain-Based Research & Language Teaching.

ERIC Educational Resources Information Center

Christison, MaryAnn

2002-01-01

Introduces brain-based teaching and learning. Reviews basic biological facts about the human brain and discusses seven principles based on recent research that have practical benefits for English-as-a-Foreign-Language teachers. (Author/VWL)

Creating Great Neighborhoods: Density in Your Community

EPA Pesticide Factsheets

This report highlights nine community-led efforts to create vibrant neighborhoods through density, discusses the connections between smart growth and density, and introduces design principles to ensure that density becomes a community asset.

Robot-aided electrospinning toward intelligent biomedical engineering.

PubMed

Tan, Rong; Yang, Xiong; Shen, Yajing

2017-01-01

The rapid development of robotics offers new opportunities for the traditional biofabrication in higher accuracy and controllability, which provides great potentials for the intelligent biomedical engineering. This paper reviews the state of the art of robotics in a widely used biomaterial fabrication process, i.e., electrospinning, including its working principle, main applications, challenges, and prospects. First, the principle and technique of electrospinning are introduced by categorizing it to melt electrospinning, solution electrospinning, and near-field electrospinning. Then, the applications of electrospinning in biomedical engineering are introduced briefly from the aspects of drug delivery, tissue engineering, and wound dressing. After that, we conclude the existing problems in traditional electrospinning such as low production, rough nanofibers, and uncontrolled morphology, and then discuss how those problems are addressed by robotics via four case studies. Lastly, the challenges and outlooks of robotics in electrospinning are discussed and prospected.

Programmable hydrogels.

PubMed

Wang, Yong

2018-03-05

Programmable hydrogels are defined as hydrogels that are able to change their properties and functions periodically, reversibly and/or sequentially on demand. They are different from those responsive hydrogels whose changes are passive or cannot be stopped or reversed once started and vice versa. The purpose of this review is to summarize major progress in developing programmable hydrogels from the viewpoints of principles, functions and biomedical applications. The principles are first introduced in three categories including biological, chemical and physical stimulation. With the stimulation, programmable hydrogels can undergo functional changes in dimension, mechanical support, cell attachment and molecular sequestration, which are introduced in the middle of this review. The last section is focused on the introduction and discussion of four biomedical applications including mechanistic studies in mechanobiology, tissue engineering, cell separation and protein delivery. Copyright © 2018 Elsevier Ltd. All rights reserved.

Comparative pharmaceutical metabolism by rainbow trout (Oncorhynchus mykiss) liver S9 fractions

EPA Science Inventory

The occurrence of pharmaceuticals in the environment presents a challenge of growing concern. In contrast to many industrial compounds, pharmaceuticals undergo extensive testing prior to their introduction to the environment. In principle, therefore, it may be possible to emplo...

Reply & Supply: Efficient crowdsourcing when workers do more than answer questions

PubMed Central

McAndrew, Thomas C.; Guseva, Elizaveta A.

2017-01-01

Crowdsourcing works by distributing many small tasks to large numbers of workers, yet the true potential of crowdsourcing lies in workers doing more than performing simple tasks—they can apply their experience and creativity to provide new and unexpected information to the crowdsourcer. One such case is when workers not only answer a crowdsourcer’s questions but also contribute new questions for subsequent crowd analysis, leading to a growing set of questions. This growth creates an inherent bias for early questions since a question introduced earlier by a worker can be answered by more subsequent workers than a question introduced later. Here we study how to perform efficient crowdsourcing with such growing question sets. By modeling question sets as networks of interrelated questions, we introduce algorithms to help curtail the growth bias by efficiently distributing workers between exploring new questions and addressing current questions. Experiments and simulations demonstrate that these algorithms can efficiently explore an unbounded set of questions without losing confidence in crowd answers. PMID:28806413

[The design and experiment of multi-parameter water quality monitoring microsystem based on MOEMS microspectrometer].

PubMed

Wei, Kang-Lin; Wen, Zhi-Yu; Guo, Jian; Chen, Song-Bo

2012-07-01

Aiming at the monitoring and protecting of water resource environment, a multi-parameter water quality monitoring microsystem based on microspectrometer was put forward in the present paper. The microsystem is mainly composed of MOEMS microspectrometer, flow paths system and embedded measuring & controlling system. It has the functions of self-injecting samples and detection regents, automatic constant temperature, self -stirring, self- cleaning and samples' spectrum detection. The principle prototype machine of the microsystem was developed, and its structure principle was introduced in the paper. Through experiment research, it was proved that the principle prototype machine can rapidly detect quite a few water quality parameters and can meet the demands of on-line water quality monitoring, moreover, the principle prototype machine has strong function expansibility.

EMERGING BIOLOGICAL PRINCIPLES OF METASTASIS

PubMed Central

Lambert, Arthur W.; Pattabiraman, Diwakar R.; Weinberg, Robert A.

2016-01-01

Metastases account for the great majority of cancer-associated deaths, yet this complex process remains the least understood aspect of cancer biology. As the body of research concerning metastasis continues to grow at a rapid rate, the biological programs that underlie the dissemination and metastatic outgrowth of cancer cells are beginning to come into view. In this review we summarize the cellular and molecular mechanisms involved in metastasis, with a focus on carcinomas where the most is known, and highlight the general principles of metastasis that have begun to emerge. PMID:28187288

Trail networks formed by populations of immune cells

NASA Astrophysics Data System (ADS)

Yang, Taeseok Daniel; Kwon, Tae Goo; Park, Jin-sung; Lee, Kyoung J.

2014-02-01

Populations of biological cells that communicate with each other can organize themselves to generate large-scale patterns. Examples can be found in diverse systems, ranging from developing embryos, cardiac tissues, chemotaxing ameba and swirling bacteria. The similarity, often shared by the patterns, suggests the existence of some general governing principle. On the other hand, rich diversity and system-specific properties are exhibited, depending on the type of involved cells and the nature of their interactions. The study on the similarity and the diversity constitutes a rapidly growing field of research. Here, we introduce a new class of self-organized patterns of cell populations that we term as ‘cellular trail networks’. They were observed with populations of rat microglia, the immune cells of the brain and the experimental evidence suggested that haptotaxis is the key element responsible for them. The essential features of the observed patterns are well captured by the mathematical model cells that actively crawl and interact with each other through a decomposing but non-diffusing chemical attractant laid down by the cells. Our finding suggests an unusual mechanism of socially cooperative long-range signaling for the crawling immune cells.

Landscape co-evolution and river discharge.

NASA Astrophysics Data System (ADS)

van der Velde, Ype; Temme, Arnaud

2015-04-01

Fresh water is crucial for society and ecosystems. However, our ability to secure fresh water resources under climatic and anthropogenic change is impaired by the complexity of interactions between human society, ecosystems, soils, and topography. These interactions cause landscape properties to co-evolve, continuously changing the flow paths of water through the landscape. These co-evolution driven flow path changes and their effect on river runoff are, to-date, poorly understood. In this presentation we introduce a spatially distributed landscape evolution model that incorporates growing vegetation and its effect on evapotranspiration, interception, infiltration, soil permeability, groundwater-surface water exchange and erosion. This landscape scale (10km2) model is calibrated to evolve towards well known empirical organising principles such as the Budyko curve and Hacks law under different climate conditions. To understand how positive and negative feedbacks within the model structure form complex landscape patterns of forests and peat bogs that resemble observed landscapes under humid and boreal climates, we analysed the effects of individual processes on the spatial distribution of vegetation and river peak and mean flows. Our results show that especially river peak flows and droughts decrease with increasing evolution of the landscape, which is a result that has direct implications for flood management.

Theoretical Heterogeneous Catalysis: Scaling Relationships and Computational Catalyst Design.

PubMed

Greeley, Jeffrey

2016-06-07

Scaling relationships are theoretical constructs that relate the binding energies of a wide variety of catalytic intermediates across a range of catalyst surfaces. Such relationships are ultimately derived from bond order conservation principles that were first introduced several decades ago. Through the growing power of computational surface science and catalysis, these concepts and their applications have recently begun to have a major impact in studies of catalytic reactivity and heterogeneous catalyst design. In this review, the detailed theory behind scaling relationships is discussed, and the existence of these relationships for catalytic materials ranging from pure metal to oxide surfaces, for numerous classes of molecules, and for a variety of catalytic surface structures is described. The use of the relationships to understand and elucidate reactivity trends across wide classes of catalytic surfaces and, in some cases, to predict optimal catalysts for certain chemical reactions, is explored. Finally, the observation that, in spite of the tremendous power of scaling relationships, their very existence places limits on the maximum rates that may be obtained for the catalyst classes in question is discussed, and promising strategies are explored to overcome these limitations to usher in a new era of theory-driven catalyst design.

Toward an automated parallel computing environment for geosciences

NASA Astrophysics Data System (ADS)

Zhang, Huai; Liu, Mian; Shi, Yaolin; Yuen, David A.; Yan, Zhenzhen; Liang, Guoping

2007-08-01

Software for geodynamic modeling has not kept up with the fast growing computing hardware and network resources. In the past decade supercomputing power has become available to most researchers in the form of affordable Beowulf clusters and other parallel computer platforms. However, to take full advantage of such computing power requires developing parallel algorithms and associated software, a task that is often too daunting for geoscience modelers whose main expertise is in geosciences. We introduce here an automated parallel computing environment built on open-source algorithms and libraries. Users interact with this computing environment by specifying the partial differential equations, solvers, and model-specific properties using an English-like modeling language in the input files. The system then automatically generates the finite element codes that can be run on distributed or shared memory parallel machines. This system is dynamic and flexible, allowing users to address different problems in geosciences. It is capable of providing web-based services, enabling users to generate source codes online. This unique feature will facilitate high-performance computing to be integrated with distributed data grids in the emerging cyber-infrastructures for geosciences. In this paper we discuss the principles of this automated modeling environment and provide examples to demonstrate its versatility.

3D Bioprinting for Engineering Complex Tissues

PubMed Central

Mandrycky, Christian; Wang, Zongjie; Kim, Keekyoung; Kim, Deok-Ho

2016-01-01

Bioprinting is a 3D fabrication technology used to precisely dispense cell-laden biomaterials for the construction of complex 3D functional living tissues or artificial organs. While still in its early stages, bioprinting strategies have demonstrated their potential use in regenerative medicine to generate a variety of transplantable tissues, including skin, cartilage, and bone. However, current bioprinting approaches still have technical challenges in terms of high-resolution cell deposition, controlled cell distributions, vascularization, and innervation within complex 3D tissues. While no one-size-fits-all approach to bioprinting has emerged, it remains an on-demand, versatile fabrication technique that may address the growing organ shortage as well as provide a high-throughput method for cell patterning at the micrometer scale for broad biomedical engineering applications. In this review, we introduce the basic principles, materials, integration strategies and applications of bioprinting. We also discuss the recent developments, current challenges and future prospects of 3D bioprinting for engineering complex tissues. Combined with recent advances in human pluripotent stem cell technologies, 3D-bioprinted tissue models could serve as an enabling platform for high-throughput predictive drug screening and more effective regenerative therapies. PMID:26724184

3D bioprinting for engineering complex tissues.

PubMed

Mandrycky, Christian; Wang, Zongjie; Kim, Keekyoung; Kim, Deok-Ho

2016-01-01

Bioprinting is a 3D fabrication technology used to precisely dispense cell-laden biomaterials for the construction of complex 3D functional living tissues or artificial organs. While still in its early stages, bioprinting strategies have demonstrated their potential use in regenerative medicine to generate a variety of transplantable tissues, including skin, cartilage, and bone. However, current bioprinting approaches still have technical challenges in terms of high-resolution cell deposition, controlled cell distributions, vascularization, and innervation within complex 3D tissues. While no one-size-fits-all approach to bioprinting has emerged, it remains an on-demand, versatile fabrication technique that may address the growing organ shortage as well as provide a high-throughput method for cell patterning at the micrometer scale for broad biomedical engineering applications. In this review, we introduce the basic principles, materials, integration strategies and applications of bioprinting. We also discuss the recent developments, current challenges and future prospects of 3D bioprinting for engineering complex tissues. Combined with recent advances in human pluripotent stem cell technologies, 3D-bioprinted tissue models could serve as an enabling platform for high-throughput predictive drug screening and more effective regenerative therapies. Copyright © 2015 Elsevier Inc. All rights reserved.

Ground State and Finite Temperature Lanczos Methods

NASA Astrophysics Data System (ADS)

Prelovšek, P.; Bonča, J.

The present review will focus on recent development of exact- diagonalization (ED) methods that use Lanczos algorithm to transform large sparse matrices onto the tridiagonal form. We begin with a review of basic principles of the Lanczos method for computing ground-state static as well as dynamical properties. Next, generalization to finite-temperatures in the form of well established finite-temperature Lanczos method is described. The latter allows for the evaluation of temperatures T>0 static and dynamic quantities within various correlated models. Several extensions and modification of the latter method introduced more recently are analysed. In particular, the low-temperature Lanczos method and the microcanonical Lanczos method, especially applicable within the high-T regime. In order to overcome the problems of exponentially growing Hilbert spaces that prevent ED calculations on larger lattices, different approaches based on Lanczos diagonalization within the reduced basis have been developed. In this context, recently developed method based on ED within a limited functional space is reviewed. Finally, we briefly discuss the real-time evolution of correlated systems far from equilibrium, which can be simulated using the ED and Lanczos-based methods, as well as approaches based on the diagonalization in a reduced basis.

Cascade use indicators for selected biopolymers: Are we aiming for the right solutions in the design for recycling of bio-based polymers?

PubMed

Hildebrandt, Jakob; Bezama, Alberto; Thrän, Daniela

2017-04-01

When surveying the trends and criteria for the design for recycling (DfR) of bio-based polymers, priorities appear to lie in energy recovery at the end of the product life of durable products, such as bio-based thermosets. Non-durable products made of thermoplastic polymers exhibit good properties for material recycling. The latter commonly enjoy growing material recycling quotas in countries that enforce a landfill ban. Quantitative and qualitative indicators are needed for characterizing progress in the development towards more recycling friendly bio-based polymers. This would enable the deficits in recycling bio-based plastics to be tracked and improved. The aim of this paper is to analyse the trends in the DfR of bio-based polymers and the constraints posed by the recycling infrastructure on plastic polymers from a systems perspective. This analysis produces recommendations on how life cycle assessment indicators can be introduced into the dialogue between designers and recyclers in order to promote DfR principles to enhance the cascading use of bio-based polymers within the bioeconomy, and to meet circular economy goals.

Cascade use indicators for selected biopolymers: Are we aiming for the right solutions in the design for recycling of bio-based polymers?

PubMed Central

Hildebrandt, Jakob; Bezama, Alberto; Thrän, Daniela

2017-01-01

When surveying the trends and criteria for the design for recycling (DfR) of bio-based polymers, priorities appear to lie in energy recovery at the end of the product life of durable products, such as bio-based thermosets. Non-durable products made of thermoplastic polymers exhibit good properties for material recycling. The latter commonly enjoy growing material recycling quotas in countries that enforce a landfill ban. Quantitative and qualitative indicators are needed for characterizing progress in the development towards more recycling friendly bio-based polymers. This would enable the deficits in recycling bio-based plastics to be tracked and improved. The aim of this paper is to analyse the trends in the DfR of bio-based polymers and the constraints posed by the recycling infrastructure on plastic polymers from a systems perspective. This analysis produces recommendations on how life cycle assessment indicators can be introduced into the dialogue between designers and recyclers in order to promote DfR principles to enhance the cascading use of bio-based polymers within the bioeconomy, and to meet circular economy goals. PMID:28097922

Irwin's conjecture: Crack shape adaptability in transversely isotropic solids

NASA Astrophysics Data System (ADS)

Laubie, Hadrien; Ulm, Franz-Josef

2014-08-01

The planar crack propagation problem of a flat elliptical crack embedded in a brittle elastic anisotropic solid is investigated. We introduce the concept of crack shape adaptability: the ability of three-dimensional planar cracks to shape with the mechanical properties of a cracked body. A criterion based on the principle of maximum dissipation is suggested in order to determine the most stable elliptical shape. This criterion is applied to the specific case of vertical cracks in transversely isotropic solids. It is shown that contrary to the isotropic case, the circular shape (i.e. penny-shaped cracks) is not the most stable one. Upon propagation, the crack first grows non-self-similarly before it reaches a stable shape. This stable shape can be approximated by an ellipse of an aspect ratio that varies with the degree of elastic anisotropy. By way of example, we apply the so-derived crack shape adaptability criterion to shale materials. For this class of materials it is shown that once the stable shape is reached, the crack propagates at a higher rate in the horizontal direction than in the vertical direction. We also comment on the possible implications of these findings for hydraulic fracturing operations.

Irreversibility and entropy production in transport phenomena, III—Principle of minimum integrated entropy production including nonlinear responses

NASA Astrophysics Data System (ADS)

Suzuki, Masuo

2013-01-01

A new variational principle of steady states is found by introducing an integrated type of energy dissipation (or entropy production) instead of instantaneous energy dissipation. This new principle is valid both in linear and nonlinear transport phenomena. Prigogine’s dream has now been realized by this new general principle of minimum “integrated” entropy production (or energy dissipation). This new principle does not contradict with the Onsager-Prigogine principle of minimum instantaneous entropy production in the linear regime, but it is conceptually different from the latter which does not hold in the nonlinear regime. Applications of this theory to electric conduction, heat conduction, particle diffusion and chemical reactions are presented. The irreversibility (or positive entropy production) and long time tail problem in Kubo’s formula are also discussed in the Introduction and last section. This constitutes the complementary explanation of our theory of entropy production given in the previous papers (M. Suzuki, Physica A 390 (2011) 1904 and M. Suzuki, Physica A 391 (2012) 1074) and has given the motivation of the present investigation of variational principle.

Research status of wave energy conversion (WEC) device of raft structure

NASA Astrophysics Data System (ADS)

Dong, Jianguo; Gao, Jingwei; Tao, Liang; Zheng, Peng

2017-10-01

This paper has briefly described the concept of wave energy generation and six typical conversion devices. As for raft structure, detailed analysis is provided from its development process to typical devices. Taking the design process and working principle of Plamis as an example, the general principle of raft structure is briefly described. After that, a variety of raft structure models are introduced. Finally, the advantages and disadvantages, and development trend of raft structure are pointed out.

Fault Management Guiding Principles

NASA Technical Reports Server (NTRS)

Newhouse, Marilyn E.; Friberg, Kenneth H.; Fesq, Lorraine; Barley, Bryan

2011-01-01

Regardless of the mission type: deep space or low Earth orbit, robotic or human spaceflight, Fault Management (FM) is a critical aspect of NASA space missions. As the complexity of space missions grows, the complexity of supporting FM systems increase in turn. Data on recent NASA missions show that development of FM capabilities is a common driver for significant cost overruns late in the project development cycle. Efforts to understand the drivers behind these cost overruns, spearheaded by NASA's Science Mission Directorate (SMD), indicate that they are primarily caused by the growing complexity of FM systems and the lack of maturity of FM as an engineering discipline. NASA can and does develop FM systems that effectively protect mission functionality and assets. The cost growth results from a lack of FM planning and emphasis by project management, as well the maturity of FM as an engineering discipline, which lags behind the maturity of other engineering disciplines. As a step towards controlling the cost growth associated with FM development, SMD has commissioned a multi-institution team to develop a practitioner's handbook representing best practices for the end-to-end processes involved in engineering FM systems. While currently concentrating primarily on FM for science missions, the expectation is that this handbook will grow into a NASA-wide handbook, serving as a companion to the NASA Systems Engineering Handbook. This paper presents a snapshot of the principles that have been identified to guide FM development from cradle to grave. The principles range from considerations for integrating FM into the project and SE organizational structure, the relationship between FM designs and mission risk, and the use of the various tools of FM (e.g., redundancy) to meet the FM goal of protecting mission functionality and assets.

Extension in Tough Times--Addressing Failures in Public and Private Extension, Lessons from the Tasmanian Wool Industry, Australia

ERIC Educational Resources Information Center

Hunt, Warren; Coutts, Jeff

2009-01-01

This paper reports research on the impact of introducing a range of extension approaches into the wool-growing regions of Tasmania Australia to meet an emerging knowledge and skills gap in the sector. The wool-growing industry of the state has experienced minimal government extension support for over 15 years. There is a failure in both private…

Sink or Swim: Standards-Based Integrated Science.

ERIC Educational Resources Information Center

Audet, Richard H.

1997-01-01

Describes an activity designed to comply with the National Science Education Standards that introduces the principles of buoyancy and density by using plastic soda bottles, ketchup packets, and other simple materials. Laboratory activity is included. (DKM)

Formulae as Scientific Stories

ERIC Educational Resources Information Center

Horsewell, Ian

2017-01-01

In science lessons many students struggle to apply the principles of rearranging formulae, even after coverage in maths. A structured approach is suggested that focuses on describing a narrative linking cause and effect before explicit mathematical terms are introduced.

Weyl gravitoelectromagnetism

NASA Astrophysics Data System (ADS)

Ramos, J.; de Montigny, M.; Khanna, F. C.

2018-07-01

We study the gauge transformation in the context of gravitoelectromagnetism and introduce a new expression for the phase factor. Using these concepts and with the principle of local gauge invariance applied to physical theories, a formal derivation of gravitoelectromagnetism is obtained.

Understanding Patterns for System-of-Systems Integration

DTIC Science & Technology

2013-12-01

would be completely newly constructed. 2. Brownfield : there exists something, but we can (in principle) modify the realization of it. Here access to...systems (SoS constitu- ents). If we consider again the enterprise software infrastructure introduced above, a Brownfield scenario occurs in a SoS...context if the company did initially build its own SoS that now must be modified (e.g., by introducing an ESB5 backbone). A Brownfield scenario also

The Green Team

ERIC Educational Resources Information Center

Jahnigen, Charlie

2006-01-01

As interest in green building grows, much discussion has focused on aligning a project with the principles of Leadership in Energy and Environmental Design (LEED) certification: (1) cost savings through energy and water conservation; (2) improved worker productivity; (3) health, insurance and risk-management benefits; and (4) enhanced building…

Use of data sources, analytical techniques, and public involvement : MPO environmental justice report

DOT National Transportation Integrated Search

2001-01-01

In the wake of new Federal guidelines on environmental justice that amplify Title VI of the Civil Rights Act, growing attention has been placed on the need to incorporate environmental justice principles into the processes and products of transportat...

Our Growing Planet.

ERIC Educational Resources Information Center

Lener, Elizabeth

2001-01-01

Discusses population growth in the U.S. and questions the appropriate time to teach about environmental protection to elementary school students. Introduces activities on conservation, natural resources, and endangered species. (YDS)

Ultrasound control of magnet growing rod distraction in early onset scoliosis.

PubMed

Pérez Cervera, T; Lirola Criado, J F; Farrington Rueda, D M

2016-01-01

The growing rod technique is currently one of the most common procedures used in the management of early onset scoliosis. However, in order to preserve spine growth and control the deformity it requires frequent surgeries to distract the rods. Magnetically driven growing rods have recently been introduced with same treatment goal, but without the inconvenience of repeated surgical distractions. One of the limitations of this technical advance is an increase in radiation exposure due to the increase in distraction frequency compared to conventional growing rods. An improvement of the original technique is presented, proposing a solution to the inconvenience of multiple radiation exposure using ultrasound technology to control the distraction process of magnetically driven growing rods. Copyright © 2014 SECOT. Publicado por Elsevier España, S.L.U. All rights reserved.

Introducing survival ethics into engineering education and practice.

PubMed

Verharen, C; Tharakan, J; Middendorf, G; Castro-Sitiriche, M; Kadoda, G

2013-06-01

Given the possibilities of synthetic biology, weapons of mass destruction and global climate change, humans may achieve the capacity globally to alter life. This crisis calls for an ethics that furnishes effective motives to take global action necessary for survival. We propose a research program for understanding why ethical principles change across time and culture. We also propose provisional motives and methods for reaching global consensus on engineering field ethics. Current interdisciplinary research in ethics, psychology, neuroscience and evolutionary theory grounds these proposals. Experimental ethics, the application of scientific principles to ethical studies, provides a model for developing policies to advance solutions. A growing literature proposes evolutionary explanations for moral development. Connecting these approaches necessitates an experimental or scientific ethics that deliberately examines theories of morality for reliability. To illustrate how such an approach works, we cover three areas. The first section analyzes cross-cultural ethical systems in light of evolutionary theory. While such research is in its early stages, its assumptions entail consequences for engineering education. The second section discusses Howard University and University of Puerto Rico/Mayagüez (UPRM) courses that bring ethicists together with scientists and engineers to unite ethical theory and practice. We include a syllabus for engineering and STEM (Science, Technology, Engineering and Mathematics) ethics courses and a checklist model for translating educational theory and practice into community action. The model is based on aviation, medicine and engineering practice. The third and concluding section illustrates Howard University and UPRM efforts to translate engineering educational theory into community action. Multidisciplinary teams of engineering students and instructors take their expertise from the classroom to global communities to examine further the ethicality of prospective technologies and the decision-making processes that lead to them.

Heuristic Evaluation of Ehealth Interventions: Establishing Standards That Relate to the Therapeutic Process Perspective

PubMed Central

Muench, Fred

2016-01-01

In recent years, the number of available eHealth interventions aimed at treating behavioral and mental health challenges has been growing. From the perspective of health care providers, there is a need for eHealth interventions to be evaluated prior to clinical trials and for the limited resources allocated to empirical research to be invested in the most promising products. Following a literature review, a gap was found in the availability of eHealth interventions evaluation principles related to the patient experience of the therapeutic process. This paper introduces principles and concepts for the evaluation of eHealth interventions developed as a first step in a process to outline general evaluation guidelines that relate to the clinical context from health care providers’ perspective. Our approach was to conduct a review of literature that relates to the examination of eHealth interventions. We identified the literature that was most relevant to our study and used it to define guidelines that relate to the clinical context. We then compiled a list of heuristics we found to be useful for the evaluation of eHealth intervention products’ suitability for empirical examination. Four heuristics were identified with respect to the therapeutic process: (1) the product’s ease of use (ie, usability), (2) the eHealth intervention’s compatibility with the clinical setting, (3) the presence of tools that make it easier for the user to engage in therapeutic activities, and (4) the provision of a feasible therapeutic pathway to growth. We then used this set of heuristics to conduct a detailed examination of MyFitnessPal. This line of work could help to set the bar higher for product developers and to inform health care providers about preferred eHealth intervention designs. PMID:26764209

Heuristic Evaluation of Ehealth Interventions: Establishing Standards That Relate to the Therapeutic Process Perspective.

PubMed

Baumel, Amit; Muench, Fred

2016-01-13

In recent years, the number of available eHealth interventions aimed at treating behavioral and mental health challenges has been growing. From the perspective of health care providers, there is a need for eHealth interventions to be evaluated prior to clinical trials and for the limited resources allocated to empirical research to be invested in the most promising products. Following a literature review, a gap was found in the availability of eHealth interventions evaluation principles related to the patient experience of the therapeutic process. This paper introduces principles and concepts for the evaluation of eHealth interventions developed as a first step in a process to outline general evaluation guidelines that relate to the clinical context from health care providers' perspective. Our approach was to conduct a review of literature that relates to the examination of eHealth interventions. We identified the literature that was most relevant to our study and used it to define guidelines that relate to the clinical context. We then compiled a list of heuristics we found to be useful for the evaluation of eHealth intervention products' suitability for empirical examination. Four heuristics were identified with respect to the therapeutic process: (1) the product's ease of use (ie, usability), (2) the eHealth intervention's compatibility with the clinical setting, (3) the presence of tools that make it easier for the user to engage in therapeutic activities, and (4) the provision of a feasible therapeutic pathway to growth. We then used this set of heuristics to conduct a detailed examination of MyFitnessPal. This line of work could help to set the bar higher for product developers and to inform health care providers about preferred eHealth intervention designs.

[Genome editing ~Principle and possibility of a novel genetic engineering technology. Basic principles of genome editing.

PubMed

Yamamoto, Takashi

Programmable site-specific nuclease mediated-genome editing is an emerging biotechnology for precise manipulation of target genes. In genome editing, gene-knockout as well as gene-knockin are possible in various organisms and cultured cells. CRISPR-Cas9, which was developed in 2012, is a convenient and efficient programmable site-specific nuclease and the use spreads around the world rapidly. For this, it is important for the progress of life science research to introduce the genome editing technology.

Adapting mudharabah principle in Islamic option

NASA Astrophysics Data System (ADS)

Suhaimi, Siti Noor Aini binti; Salleh, Hassilah binti

2013-04-01

Most of the options today use the Black-Scholes model as the basis in valuing their price. This conventional model involves the elements that are strictly prohibited in Islam namely riba, gharar and maisir. Hence, this paper introduces a new mathematical model that has been adapted with mudharabah principle to replace the Black-Scholes model. This new model which is more compatible with Islamic values produces a new Islamic option which avoids any form of oppression and injustice to all parties involved.

Malthus, the 18th century European explorers and the principle of population in Africa

PubMed Central

Reniers, Georges

2012-01-01

In the second edition of his Essay on the Principle of Population, Malthus included twelve chapters that offer a remarkable description of population dynamics from all corners of the world. His discussion of (sub-Saharan) Africa was almost entirely based on the travel accounts of James Bruce and Mungo Park, two late eighteenth century British explorers. In this essay, I introduce these sources and discuss the insights that Malthus did, or perhaps should have, derived from both. PMID:24259758

[THE PRINCIPLES OF ORGANIZATION AND TREATMENT FOR SORTING OF WOUNDED PERSONS WITH A COMBAT SURGICAL TRAUMA OF EXTREMITIES ON THE IV LEVEL OF THE MEDICAL CARE PROVISION].

PubMed

Korohl, S O; Zherdev, I I; Domanskiy, A M

2015-12-01

Experience of medical sorting of 434 injured persons with a gun-shot woundings of extremities in 2014-2015 yrs is adduced. The principles of organization and treatment for medical sorting of wounded persons were elaborated. Prognostic intrahospital, diagnostic and evacuation--transport sorting was introduced in wounded persons in the IV level hospital, concerning severity of traumatic shock and prognosis of their survival.

Exploring the Dynamics and Modeling National Budget as a Supply Chain System: A Proposal for Reengineering the Budgeting Process and for Developing a Management Flight Simulator

DTIC Science & Technology

2012-09-01

Elmendorf, D. W., & Gregory Mankiw , N. (1999). Government debt. Handbook of Macroeconomics , 1, 1615-1669. European Union. European financial stability...budget process, based on the supply chain demand management process principles of operations and it is introduced the idea of developing a Budget... principles of systems dynamics, a proposal for the development of a Budget Management Flight Simulator, that will operate as a learning and educational

[Problems in transferring a research institute of ophthalmology to new economic system].

PubMed

Travkin, A G; Zolotova, O A; Kiseleva, O A; Ter-Grigorian, M G; Megreladze, T S; Mazurova, L M

1991-01-01

Introduction of new economic principles in the activities of medical research institutions helps extend the rights and responsibilities of the institutes' stuff and make them economically interested in the results of their activity; these principles provide high quality of treatment and prophylaxis work and permit concentrating all the resources on the priority trends in medical research. The authors discuss the pressing problems in introducing the cost accounting system in the activity of a research institute in ophthalmology.

Patterning Self-Assembled Monolayers on Gold: Green Materials Chemistry in the Teaching Laboratory

ERIC Educational Resources Information Center

McFarland, Adam D.; Huffman, Lauren M.; Parent, Kathryn, E.; Hutchison, James E.; Thompson, John E.

2004-01-01

An experiment demonstrating self-assembled monolayer (SAM) chemistry, organic thin-film patterning and the use of molecular functionality to control macroscopic properties is described. Several important green chemistry principles are introduced.

Database Management

NASA Technical Reports Server (NTRS)

1984-01-01

Management of the data within a planetary data system (PDS) is addressed. Principles of modern data management are described and several large NASA scientific data base systems are examined. Data management in PDS is outlined and the major data management issues are introduced.

What We Could Tell Advanced Student Writers about Audience.

ERIC Educational Resources Information Center

Ewald, Helen Rothschild

1991-01-01

Explores what advanced student writers could be told about audience based on current principles of reading theory. Discusses reasons why teachers may not want to introduce students to these reading-based concepts of audience. (RS)

Guidelines for Teaching Cross-Cultural Clinical Ethics: Critiquing Ideology and Confronting Power in the Service of a Principles-Based Pedagogy.

PubMed

Brunger, Fern

2016-03-01

This paper presents a pedagogical framework for teaching cross-cultural clinical ethics. The approach, offered at the intersection of anthropology and bioethics, is innovative in that it takes on the "social sciences versus bioethics" debate that has been ongoing in North America for three decades. The argument is made that this debate is flawed on both sides and, moreover, that the application of cross-cultural thinking to clinical ethics requires using the tools of the social sciences (such as the critique of the universality of the Euro-American construct of "autonomy") within (rather than in opposition to) a principles-based framework for clinical ethics. This paper introduces the curriculum and provides guidelines for how to teach cross-cultural clinical ethics. The learning points that are introduced emphasize culture in its relation to power and underscore the importance of viewing both biomedicine and bioethics as culturally constructed.

A real-time measurement system for parameters of live biology metabolism process with fiber optics

NASA Astrophysics Data System (ADS)

Tao, Wei; Zhao, Hui; Liu, Zemin; Cheng, Jinke; Cai, Rong

2010-08-01

Energy metabolism is one of the basic life activities of cellular in which lactate, O2 and CO2 will be released into the extracellular environment. By monitoring the quantity of these parameters, the mitochondrial performance will be got. A continuous measurement system for the concentration of O2, CO2 and PH value is introduced in this paper. The system is made up of several small-sized fiber optics biosensors corresponding to the container. The setup of the system and the principle of measurement of several parameters are explained. The setup of the fiber PH sensor based on principle of light absorption is also introduced in detail and some experimental results are given. From the results we can see that the system can measure the PH value precisely suitable for cell cultivation. The linear and repeatable accuracies are 3.6% and 6.7% respectively, which can fulfill the measurement task.

[Free choice of doctor: patient's right or doctor's power?].

PubMed

Bertens, R M; Huisman, F G

2016-01-01

This article outlines the historical development of the principle of patients' free choice of doctor in the Netherlands. Far from being the result of debates on patients' rights, this principle was used instead as an instrument by the medical profession to gain a foothold in the power relations between doctors and sickness funds back in the early 20th-century. This development created a medical power bloc that lasted for most of that century and forced sickness funds and private insurers to start organizing in this fashion too. Therefore, when the new market ideology of introducing competition in health care was introduced in 1987, the fields of health provision and insurance were already defined by a high degree of cartelization. These relations lingered even after the introduction of regulated competition in 2006. Knowledge of this history therefore leads to a better understanding of current debates and problems in the organization of Dutch health care.

Preparation of Gold Nanoparticles Using Tea: A Green Chemistry Experiment

ERIC Educational Resources Information Center

Sharma, R. K.; Gulati, Shikha; Mehta, Shilpa

2012-01-01

Assimilating green chemistry principles in nanotechnology is a developing area of nanoscience research nowadays. Thus, there is a growing demand to develop environmentally friendly and sustainable methods for the synthesis of nanoparticles that utilize nontoxic chemicals, environmentally benign solvents, and renewable materials to avoid their…

Islamist Movement Challenges Universities

ERIC Educational Resources Information Center

Lindsey, Ursula

2013-01-01

In Tunisian and Egyptian universities, scholars face a growing Islamist resolve to remake their countries on the basis of religious principles. Both Tunisia and Egypt face questions that could affect higher education across the Middle East and North Africa: Can their new Islamist governments spread conservative religious values and also create…

The Shape of Words in the Brain

ERIC Educational Resources Information Center

Kovic, Vanja; Plunkett, Kim; Westermann, Gert

2010-01-01

The principle of arbitrariness in language assumes that there is no intrinsic relationship between linguistic signs and their referents. However, a growing body of sound-symbolism research suggests the existence of some naturally-biased mappings between phonological properties of labels and perceptual properties of their referents (Maurer,…

Ekistics, the Science of Human Settlements

ERIC Educational Resources Information Center

Doxiadis, Constantinos A.

1970-01-01

Presents the science of ekistics for systematic analysis of historical, contemporary, and proposed human settlements varying from individual to Ecumenopolis size. Five principles are described as applicable to all cities and applied to growing urban developments. Isolation of Dimensions and Elimination of Alternatives (IDEA method) is proposed for…

Leibniz on teleology and the laws of optics

NASA Astrophysics Data System (ADS)

McDonough, Jeffrey Keegan

This essay explores Leibniz's defense of teleology and teleological explanations in the domain of physics in general, and the roles that teleology plays in his studies of optics in particular. I argue first that Leibniz draws upon Plato's defense of final causes to introduce a novel research program intended to steer a middle course, on the one hand, between Aristotelian-Scholasticism and the new mechanical philosophy, and, on the other hand, between Cartesian rationalism and Gassendist empiricism. The implementation of this program leads Leibniz to significant conceptual innovations, as he attempts to reconcile teleological and efficient explanatory frameworks, and important discoveries, as he tries to show how final causes can be used to achieve results in the study of the natural world. Having situated Leibniz's defense of final causes in the broader context of his general philosophy of physics, I turn to a more detailed investigation of the roles that teleology plays in his work in geometrical optics. Interest in final causes leads Leibniz to introduce his "Most Determined Path Principle" from which both of the central laws of geometrical optics may be derived. I argue that Leibniz uses the discovery of such principles to introduce a thin notion of final causation within the order of nature based on teleological laws that link prior events to subsequent events via the likely or expected outcomes of those events, and defend this view against objections made both by Leibniz's contemporaries and our own. I also argue that Leibniz uses the discovery of principles like Most Determined Path Principle to provide a novel connection within his system between considerations of divine perfection and the laws of nature. I defend the internal consistency of this connection, and explore its relations to Leibniz's mature physics, and to his view that the world is governed by two sets of equipotent laws, one teleological and one mechanical.

Accelerated Evolution in the Death Galaxy

NASA Astrophysics Data System (ADS)

Austin, Robert; Tung, Chih-Kuan; Gong, Xiu-Quing; Lambert, Guillaume; Liao, David

2010-03-01

We recall 4 main guiding principles of evolution: 1) instability of defections, 2) stress induced non-random mutations, 3) genetic heterogeneity, and 4) fragmented populations. Our previous preliminary experiments have been relatively simple 1-D stress experiments. We are proceeding with 2-D experiments whose design is guided by these principles. Our new experiment we have dubbed the Death Galaxy because of it's use of these design principles. The ``galaxy'' name comes from the fact that the structure is designed as an interconnected array of micro-ecologies, these micro-ecologies are similar to the stars that comprise an astronomical galaxy, and provide the fragmented small populations. A gradient of the antibiotic Cipro is introduced across the galaxy, and we will present results which show how bacterial evolution resulting in resistance to Cipro is accelerated by the physics principles underlying the device.

An experimental test of the EICA hypothesis in multiple ranges: invasive populations outperform those from the native range independent of insect herbivore suppression

PubMed Central

DeWalt, Saara J.; Zou, Jianwen; Rogers, William E.

2017-01-01

Abstract The success of invasive plants may reflect environmental differences in their native and introduced ranges including both abiotic and biotic conditions, such as release from aboveground herbivory. However, in response to these novel conditions, plants from invasive populations may have higher growth rates and lower defence levels compared with those in the native range. This may contribute to their success in the introduced range but perhaps not in the native range. Here, we grew 1000 Triadica sebifera plants from 14 native and introduced populations in seven common gardens with unmanaged background vegetation for three growing seasons in three geographic venues that varied in T. sebifera status and insect herbivore communities: Texas—T. sebifera is invasive, low levels of generalist herbivory; Hawaii—T. sebifera introduced but not invasive, high levels of generalist herbivory from exotic herbivores; China—native range, both generalist and specialist herbivores. We suppressed aboveground insects with insecticide on half the plants. Aboveground damage in the first growing season was lowest in Texas and insecticide sprays reduced damage in China. At the end of the first growing season, plants were tallest on an average in China and shortest in Hawaii. However, height in later years and mass were the highest on average in Texas and the lowest in Hawaii. However, there was large variation in damage and plant performance among gardens within venues. Our results suggest that more rapid aboveground growth rates contribute to T. sebifera’s success in both the invasive and native ranges independent of aboveground herbivory. However, strong variation among sites indicates that T. sebifera plants from invasive populations only have a strong advantage in a subset of sites in Texas. PMID:28039113

An experimental test of the EICA Hypothesis in multiple ranges: invasive populations outperform those from the native range independent of insect herbivore suppression.

PubMed

Siemann, Evan; DeWalt, Saara J; Zou, Jianwen; Rogers, William E

2016-12-30

The success of invasive plants may reflect environmental differences in their native and introduced ranges including both abiotic and biotic conditions, such as release from aboveground herbivory. However, in response to these novel conditions, plants from invasive populations may have higher growth rates and lower defense levels compared to those in the native range. This may contribute to their success in the introduced range but perhaps not in the native range. Here, we grew 1000 Triadica sebifera plants from 14 native and introduced populations in seven common gardens with unmanaged background vegetation for three growing seasons in three geographic venues that varied in T. sebifera status and insect herbivore communities: Texas -T. sebifera is invasive, low levels of generalist herbivory; Hawaii - T. sebifera introduced but not invasive, high levels of generalist herbivory from exotic herbivores; China - native range, both generalist and specialist herbivores. We suppressed aboveground insects with insecticide on half the plants. Aboveground damage in the first growing season was lowest in Texas and insecticide sprays reduced damage in China. At the end of the first growing season, plants were tallest on average in China and shortest in Hawaii. However, height in later years and mass were highest on average in Texas and lowest in Hawaii. However, there was large variation in damage and plant performance among gardens within venues. Our results suggest that more rapid aboveground growth rates contribute to T. sebifera's success in both the invasive and native ranges independent of aboveground herbivory. However, strong variation among sites indicates that T. sebifera plants from invasive populations only have a strong advantage in a subset of sites in Texas. Published by Oxford University Press on behalf of the Annals of Botany Company.

Let's Grow Act of 2012

THOMAS, 112th Congress

Rep. Fudge, Marcia L. [D-OH-11

2012-04-16

House - 09/26/2012 Referred to the Subcommittee on Early Childhood, Elementary, and Secondary Education. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

Let's Grow Act of 2013

THOMAS, 113th Congress

Rep. Fudge, Marcia L. [D-OH-11

2013-05-09

House - 07/08/2013 Referred to the Subcommittee on Early Childhood, Elementary, and Secondary Education. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

Three Principles to REVISE People's Unethical Behavior.

PubMed

Ayal, Shahar; Gino, Francesca; Barkan, Rachel; Ariely, Dan

2015-11-01

Dishonesty and unethical behavior are widespread in the public and private sectors and cause immense annual losses. For instance, estimates of U.S. annual losses indicate $1 trillion paid in bribes, $270 billion lost due to unreported income, and $42 billion lost in retail due to shoplifting and employee theft. In this article, we draw on insights from the growing fields of moral psychology and behavioral ethics to present a three-principle framework we call REVISE. This framework classifies forces that affect dishonesty into three main categories and then redirects those forces to encourage moral behavior. The first principle, reminding, emphasizes the effectiveness of subtle cues that increase the salience of morality and decrease people's ability to justify dishonesty. The second principle, visibility, aims to restrict anonymity, prompt peer monitoring, and elicit responsible norms. The third principle, self-engagement, increases people's motivation to maintain a positive self-perception as a moral person and helps bridge the gap between moral values and actual behavior. The REVISE framework can guide the design of policy interventions to defeat dishonesty. © The Author(s) 2015.

Automated first-principles mapping for phase-change materials.

PubMed

Esser, Marc; Maintz, Stefan; Dronskowski, Richard

2017-04-05

Plotting materials on bi-coordinate maps according to physically meaningful descriptors has a successful tradition in computational solid-state science spanning more than four decades. Equipped with new ab initio techniques introduced in this work, we generate an improved version of the treasure map for phase-change materials (PCMs) as introduced previously by Lencer et al. which, other than before, charts all industrially used PCMs correctly. Furthermore, we suggest seven new PCM candidates, namely SiSb 4 Te 7 , Si 2 Sb 2 Te 5 , SiAs 2 Te 4 , PbAs 2 Te 4 , SiSb 2 Te 4 , Sn 2 As 2 Te 5 , and PbAs 4 Te 7 , to be used as synthetic targets. To realize aforementioned maps based on orbital mixing (or "hybridization") and ionicity coordinates, structural information was first included into an ab initio numerical descriptor for sp 3 orbital mixing and then generalized beyond high-symmetry structures. In addition, a simple, yet powerful quantum-mechanical ionization measure also including structural information was introduced. Taken together, these tools allow for (automatically) generating materials maps solely relying on first-principles calculations. © 2017 Wiley Periodicals, Inc. © 2017 Wiley Periodicals, Inc.

Expanding Role of Data Science and Bioinformatics in Drug Discovery and Development.

PubMed

Fingert, Howard J

2018-01-01

Numerous barriers have been identified which detract from successful applications of clinical trial data and platforms. Despite the challenges, opportunities are growing to advance compliance, quality, and practical applications through top-down establishment of guiding principles, coupled with bottom-up approaches to promote data science competencies among data producers. Recent examples of successful applications include modern treatments for hematologic malignancies, developed with support from public-private partnerships, guiding principles for data-sharing, standards for protocol designs and data management, digital technologies, and quality analytics. © 2017 American Society for Clinical Pharmacology and Therapeutics.

A Novel Physical Sensing Principle for Liquid Characterization Using Paper-Based Hygro-Mechanical Systems (PB-HMS).

PubMed

Perez-Cruz, Angel; Stiharu, Ion; Dominguez-Gonzalez, Aurelio

2017-07-20

In recent years paper-based microfluidic systems have emerged as versatile tools for developing sensors in different areas. In this work; we report a novel physical sensing principle for the characterization of liquids using a paper-based hygro-mechanical system (PB-HMS). The PB-HMS is formed by the interaction of liquid droplets and paper-based mini-structures such as cantilever beams. The proposed principle takes advantage of the hygroscopic properties of paper to produce hygro-mechanical motion. The dynamic response of the PB-HMS reveals information about the tested liquid that can be applied to characterize certain properties of liquids. A suggested method to characterize liquids by means of the proposed principle is introduced. The experimental results show the feasibility of such a method. It is expected that the proposed principle may be applied to sense properties of liquids in different applications where both disposability and portability are of extreme importance.

Introducing Students to Basic ChE Concepts: Four Simple Experiments.

ERIC Educational Resources Information Center

Fraser, Duncan M.

1999-01-01

Describes an Introduction to Chemical Engineering course with particular reference to the development, use, and evaluation of four simple experiments centered around the fundamental principles of heat transfer, mass transfer, reaction kinetics, and momentum transfer. (WRM)

Curriculum Design for Distance Education in the Tertiary Sector

ERIC Educational Resources Information Center

Chugh, Ritesh; Ledger, Shirley; Shields, Rebecca

2017-01-01

A growing number of students globally are enrolling in distance education programs and it is becoming important now, more than ever before, to design curriculum that reflects educational principles, represents elements of engagement and pedagogy and meets institutional and industry requirements. In doing so, it is vital to design contemporary…

Protecting and Enhancing Campus Facilities: 6 Principles for Boards

ERIC Educational Resources Information Center

Kaiser, Harvey H.

2012-01-01

Dormitories, student centers, lecture halls, laboratories, athletic facilities, quads--just try to imagine a residential campus without them. Impossible. They are among its most important assets. As fiduciaries, boards must ensure that those assets are protected and enhanced over time. But how to do so effectively when growing internal and…

A Microeconomic Model of the Personnel Shortage in Public Rehabilitation Agencies

ERIC Educational Resources Information Center

Schultz, Jared C.; Millington, Michael J.

2007-01-01

There is a well-documented, growing shortage of rehabilitation counseling professionals in the public sector. Using microeconomics principles, a theoretical model is offered to account for the personnel shortage and propose potential solutions to recruit and retain rehabilitation counselors in the public sector. Suggestions for rehabilitation…

A Cultural Experience: Japan.

ERIC Educational Resources Information Center

Wood, Robert W.; And Others

This activities unit for teaching about Japan is designed for use with elementary students. The activities reflect the growing importance of Japan in today's world, and the belief that the social studies curriculum should reflect principles of global education. The unit is intended to explore seven major goals included in the social studies…

Online Pedagogy: Principles for Supporting Effective Distance Education

ERIC Educational Resources Information Center

Scheer, Stephanie B.; Terry, Krista P.; Doolittle, Peter E.; Hicks, David

2004-01-01

Distance education has become a major form of education in the United States. This surge in popularity has launched a plethora of scholarship emphasizing the distillation of those strategies which inform effective, learning experiences in the distance environment. A growing consensus among researchers recognizes the need for a holistic approach to…

Sustaining Partnerships between Schools and Industry: A Minerals and Energy Case

ERIC Educational Resources Information Center

Flynn, Matthew; Pillay, Hitendra; Watters, James J.

2016-01-01

Internationally, there is a growing body of research on industry-school partnership, particularly regarding the principles that contribute to effective and efficient partnership models that facilitate vocational-industrial education. However, there are very few articles in the literature that seek to understand the sustainability of…

Distance Supervision in Rehabilitation Counseling: Ethical and Clinical Considerations

ERIC Educational Resources Information Center

Lund, Emily M.; Schultz, Jared C.

2015-01-01

Background: The use of technology-mediated distance supervision is a rapidly growing area in rehabilitation counseling and other fields. Distance supervision has both tremendous potential and notable challenges to address, including questions of ethics and evidence. Purpose: This article examines both the ethical and nonethical principles that…

Computerized Adaptive Testing: Some Issues in Development.

ERIC Educational Resources Information Center

Orcutt, Venetia L.

The emergence of enhanced capabilities in computer technology coupled with the growing body of knowledge regarding item response theory has resulted in the expansion of computerized adaptive test (CAT) utilization in a variety of venues. Newcomers to the field need a more thorough understanding of item response theory (IRT) principles, their…

CALL Essentials: Principles and Practice in CALL Classrooms

ERIC Educational Resources Information Center

Egbert, Joy

2005-01-01

Computers and the Internet offer innovative teachers exciting ways to enhance their pedagogy and capture their students' attention. These technologies have created a growing field of inquiry, computer-assisted language learning (CALL). As new technologies have emerged, teaching professionals have adapted them to support teachers and learners in…

Toward Evidence-Informed Policy and Practice in Child Welfare

ERIC Educational Resources Information Center

Littell, Julia H.; Shlonsky, Aron

2010-01-01

Drawing on the authors' experience in the international Campbell Collaboration, this essay presents a principled and pragmatic approach to evidence-informed decisions about child welfare. This approach takes into account the growing body of empirical evidence on the reliability and validity of various methods of research synthesis. It also…

Production of lactic acid from hemicellulose extracts by Bacillus coagulans MXL-9

USDA-ARS?s Scientific Manuscript database

Bacillus coagulans MXL-9 was found capable of growing on pre-pulping hemicellulose extracts, utilizing all of the principle monosugars found in woody biomass. This organism is a moderate thermophile isolated from compost for its pentose utilizing capabilities. It was found to have high tolerance f...

Controlling the Thermal Environment of the Co-ordinated Classroom.

ERIC Educational Resources Information Center

Harmon, Darell Boyd

The classroom environment is a working surround in which children, through participating in organized experiences, can grow and develop in an optimum manner. Classroom design requires organization of principles of environmental control in order to assure efficient and successful performance. This control cannot be left to chance. In considering…

Productivity limits and potentials of the principles of conservation agriculture

USDA-ARS?s Scientific Manuscript database

One of the primary challenges of our time is to feed a growing and more demanding world population with reduced external inputs and minimal environmental impacts, all under more variable and extreme climate conditions of the future. Conservation agriculture (CA) represents a set of three crop manage...

Promoting Efficacy Research on Functional Analytic Psychotherapy

ERIC Educational Resources Information Center

Maitland, Daniel W. M.; Gaynor, Scott T.

2012-01-01

Functional Analytic Psychotherapy (FAP) is a form of therapy grounded in behavioral principles that utilizes therapist reactions to shape target behavior. Despite a growing literature base, there is a paucity of research to establish the efficacy of FAP. As a general approach to psychotherapy, and how the therapeutic relationship produces change,…

Facile silicification of plastic surface for bioassays

PubMed Central

Hong, Seonki; Park, Ki Soo; Weissleder, Ralph; Castro, Cesar M.; Lee, Hakho

2017-01-01

We herein report a biomimetic technique to modify plastic substrates for bioassays. The method first places a polydopamine adhesion layer to plastic surface, and then grows conformal silica coating. As proof of principle, we coated plastic microbeads to construct a disposable filter for point-of-care nucleic acid extraction. PMID:28134385

Campus network security model study

NASA Astrophysics Data System (ADS)

Zhang, Yong-ku; Song, Li-ren

2011-12-01

Campus network security is growing importance, Design a very effective defense hacker attacks, viruses, data theft, and internal defense system, is the focus of the study in this paper. This paper compared the firewall; IDS based on the integrated, then design of a campus network security model, and detail the specific implementation principle.

BioCapacitor: A novel principle for biosensors.

PubMed

Sode, Koji; Yamazaki, Tomohiko; Lee, Inyoung; Hanashi, Takuya; Tsugawa, Wakako

2016-02-15

Studies regarding biofuel cells utilizing biocatalysts such as enzymes and microorganisms as electrocatalysts have been vigorously conducted over the last two decades. Because of their environmental safety and sustainability, biofuel cells are expected to be used as clean power generators. Among several principles of biofuel cells, enzyme fuel cells have attracted significant attention for their use as alternative energy sources for future implantable devices, such as implantable insulin pumps and glucose sensors in artificial pancreas and pacemakers. However, the inherent issue of the biofuel cell principle is the low power of a single biofuel cell. The theoretical voltage of biofuel cells is limited by the redox potential of cofactors and/or mediators employed in the anode and cathode, which are inadequate for operating any devices used for biomedical application. These limitations inspired us to develop a novel biodevice based on an enzyme fuel cell that generates sufficient stable power to operate electric devices, designated "BioCapacitor." To increase voltage, the enzyme fuel cell is connected to a charge pump. To obtain a sufficient power and voltage to operate an electric device, a capacitor is used to store the potential generated by the charge pump. Using the combination of a charge pump and capacitor with an enzyme fuel cell, high voltages with sufficient temporary currents to operate an electric device were generated without changing the design and construction of the enzyme fuel cell. In this review, the BioCapacitor principle is described. The three different representative categories of biodevices employing the BioCapacitor principle are introduced. Further, the recent challenges in the developments of self-powered stand-alone biodevices employing enzyme fuel cells combined with charge pumps and capacitors are introduced. Finally, the future prospects of biodevices employing the BioCapacitor principle are addressed. Copyright © 2015 The Authors. Published by Elsevier B.V. All rights reserved.

Growth form and distribution of introduced plants in their native and non-native ranges in Eastern Asia and North America

Treesearch

Robert E. Ricklefs; Qinfeng Guo; Hong Qian

2008-01-01

There is a growing interest in understanding the influence of plant traits on their ability to spread in non-native regions. Many studies addressing this issue have been based on relatively small areas or restricted taxonomic groups. Here, we analyse a large data base involving 1567 plant species introduced between Eastern Asia and North America or from elsewhere to...

Containerless protein crystal growth method

NASA Technical Reports Server (NTRS)

Rhim, Won-Kyu; Chung, Sang K.

1991-01-01

A method of growing protein crystals from levitated drops is introduced and unique features of containerless approach in 1-g and micro-G laboratories are discussed. Electrostatic multidrop levitation system which is capable of simultaneous four drop levitation is described. A method of controlling protein saturation level in a programmed way is introduced and discussed. Finally, some of the unique features of containerless approach of protein crystal growth in space are discussed and summarized.

Operationalizing Principle-Based Standards for Animal Welfare-Indicators for Climate Problems in Pig Houses.

PubMed

Vermeer, Herman M; Hopster, Hans

2018-03-23

The Dutch animal welfare law includes so-called principle-based standards. This means that the objective is described in abstract terms, enabling farmers to comply with the law in their own way. Principle-based standards are, however, difficult for the inspection agency to enforce because strict limits are missing. This pilot project aimed at developing indicators (measurements) to assess the climate in pig houses, thus enabling the enforcement of principle-based standards. In total, 64 farms with weaners and 32 farms with growing-finishing pigs were visited. On each farm, a set of climate-related measurements was collected in six pens. For each of these measurements, a threshold value was set, and exceeding this threshold indicated a welfare risk. Farm inspections were carried out during winter and spring, thus excluding situations with heat stress. Assessment of the variation and correlation between measurements reduced the dataset from 39 to 12 measurements. Using a principal components analysis helped to select five major measurements as warning signals. The number of exceeded thresholds per pen and per farm was calculated for both the large (12) and small (five) sets of measurements. CO₂ and NH₃ concentrations were related to the outside temperature. On colder days, there was less ventilation, and thus CO₂ and NH₃ concentrations increased. Air quality, reflected in the CO₂ and NH₃ concentrations, was associated with respiratory problems. Eye scores were positively correlated with both pig and pen fouling, and pig and pen fouling were closely related. We selected five signal indicators: CO₂, NH₃, and tail and eye score for weaners and finishers, and added ear score for weaners and pig fouling for growing-finishing pigs. The results indicate that pig farms can be ranked based on five signal indicators related to reduced animal welfare caused by climatic conditions. This approach could be adopted to other principle-based standards for pigs as well as for other species.

Growing Safe Food Act of 2009

THOMAS, 111th Congress

Sen. Stabenow, Debbie [D-MI

2009-11-09

Senate - 11/09/2009 Read twice and referred to the Committee on Agriculture, Nutrition, and Forestry. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

Chemical Defects, Electronic Structure, and Transport in N-type and P-type Organic Semiconductors: First Principles Theory

DTIC Science & Technology

2012-11-29

of localized states extending into the gap. We also introduced a simple model allowing estimates of the upper limit of the intra-grain mobility in...well as to pentacene , and DATT. This research will be described below. In addition to our work on the electronic structure and charge mobility, we have...stacking distance gives rise to a tail of localized states which act as traps for electrons and holes. We introduced a simple effective Hamiltonian model

Materials Databases Infrastructure Constructed by First Principles Calculations: A Review

DOE PAGES

Lin, Lianshan

2015-10-13

The First Principles calculations, especially the calculation based on High-Throughput Density Functional Theory, have been widely accepted as the major tools in atom scale materials design. The emerging super computers, along with the powerful First Principles calculations, have accumulated hundreds of thousands of crystal and compound records. The exponential growing of computational materials information urges the development of the materials databases, which not only provide unlimited storage for the daily increasing data, but still keep the efficiency in data storage, management, query, presentation and manipulation. This review covers the most cutting edge materials databases in materials design, and their hotmore » applications such as in fuel cells. By comparing the advantages and drawbacks of these high-throughput First Principles materials databases, the optimized computational framework can be identified to fit the needs of fuel cell applications. The further development of high-throughput DFT materials database, which in essence accelerates the materials innovation, is discussed in the summary as well.« less

Swine influenza and vaccines: an alternative approach for decision making about pandemic prevention.

PubMed

Basili, Marcello; Ferrini, Silvia; Montomoli, Emanuele

2013-08-01

During the global pandemic of A/H1N1/California/07/2009 (A/H1N1/Cal) influenza, many governments signed contracts with vaccine producers for a universal influenza immunization program and bought hundreds of millions of vaccines doses. We argue that, as Health Ministers assumed the occurrence of the worst possible scenario (generalized pandemic influenza) and followed the strong version of the Precautionary Principle, they undervalued the possibility of mild or weak pandemic wave. An alternative decision rule, based on the non-extensive entropy principle, is introduced, and a different Precautionary Principle characterization is applied. This approach values extreme negative results (catastrophic events) in a different way and predicts more plausible and mild events. It introduces less pessimistic forecasts in the case of uncertain influenza pandemic outbreaks. A simplified application is presented using seasonal data of morbidity and severity among Italian children influenza-like illness for the period 2003-10. Established literature results predict an average attack rate of not less than 15% for the next pandemic influenza [Meltzer M, Cox N, Fukuda K. The economic impact of pandemic influenza in the United States: implications for setting priorities for interventions. Emerg Infect Dis 1999;5:659-71; Meltzer M, Cox N, Fukuda K. Modeling the Economic Impact of Pandemic Influenza in the United States: Implications for Setting Priorities for Intervention. Background paper. Atlanta, GA: CDC, 1999. Available at: http://www.cdc.gov/ncidod/eid/vol5no5/melt_back.htm (7 January 2011, date last accessed))]. The strong version of the Precautionary Principle would suggest using this prediction for vaccination campaigns. On the contrary, the non-extensive maximum entropy principle predicts a lower attack rate, which induces a 20% saving in public funding for vaccines doses. The need for an effective influenza pandemic prevention program, coupled with an efficient use of public funding, calls for a rethinking of the Precautionary Principle. The non-extensive maximum entropy principle, which incorporates vague and incomplete information available to decision makers, produces a more coherent forecast of possible influenza pandemic and a conservative spending in public funding.

The design principles of edutainment system for autistic children with communication difficulties

NASA Astrophysics Data System (ADS)

Hussain, Azham; Abdullah, Adil; Husni, Husniza

2016-08-01

Approximately 50% of all individuals with Autism have difficulties in developing functional language owing to communication deterioration. Mobile devices with installed educational games help these individuals feel more comfortable and relaxed doing such activities. Although numerous mobile applications are available for individuals with Autism, they are difficult to use; particularly in terms of user-interface design. From the analysis of existing apps for autistic children, an app design principles are proposed based on interaction design (IxD), that would fulfil the users' requirements in a better manner. Five applications were involved in this analysis. The analysis identified fifteen suggestions for the design principles. These recommendations are offered by this paper towards designing and developing a prototype app for autistic children. This paper introduces an edutainment-system design principle formulated to help develop the communication skills of children with Autism-spectrum disorders.

Gestalt theory: implications for radiology education.

PubMed

Koontz, Nicholas A; Gunderman, Richard B

2008-05-01

The Gestalt theory of modern psychology is grounded in the ideas that holistic rather than atomistic approaches are necessary to understand the mind, and that the mental whole is greater than the sum of its component parts. Although the Gestalt school fell out of favor due to its descriptive rather than explanatory nature, it permanently changed our understanding of perception. For the radiologist, such fundamental Gestalt concepts as figure-ground relationships and a variety of "grouping principles" (the laws of closure, proximity, similarity, common region, continuity, and symmetry) are ubiquitous in daily work, not to mention in art and personal life. By considering the applications of these principles and the stereotypical ways in which humans perceive visual stimuli, a radiology learner may incur fewer errors of diagnosis. This article serves to introduce several important principles of Gestalt theory, identify examples of these principles in widely recognizable fine art, and highlight their implications for radiology education.

[Profile of Shohei Ninomiya (pharmacist), the first Japanese medical representative to practice modern European-style propaganda in the late Meiji era].

PubMed

Nishikawa, Takashi

2007-01-01

A Swiss pharmaceutical company (F-Hoffmann-La Roche Ltd.), first introduced the profession of "propagandist" in Japan in 1912. At the time, Shohei Ninomiya was a chief hospital pharmacist, but he changed his vocation to become the first "propah" (Japanese abbreviation for propagandist). The German physician Dr. Rudolf Ebering initiated Dr. Ninomiya in the methods and principles of "propah," and he faithfully practiced them. The defining principle of a modern European propagandist is one who is far from sales-centered. From the late 1970s through 1980s, however, Japanese pharmaceutical companies indulged in pursuing sales and neglected this principle, resulting in numerous abuses and adverse effects. Today, use of the description "medical representative" (MR) is more common than "propah." Even with this different description, pharmaceutical companies and MRs should never neglect the founding principle to avoid repeating such abuses.

The contribution of new findings and ideas to the old principles of teratology.

PubMed

Jelínek, Richard

2005-01-01

Although the last generally accepted concept of principles of teratology was issued more than 30 years ago, the cause of less than 50% of all congenital anomalies is known and no substantial change in their incidence has been observed worldwide. In the meantime, powerful techniques of molecular biology as well as many sophisticated preventive measures have been introduced with marginal effects on the overall birth defects numbers. In this paper, we follow the history of basic concepts of teratology starting with Isidore Geoffroy Saint-Hilaire and Dareste, followed in the 20th century by James Wilson. Since that time no bright and completely new idea, which would deserve the name principle, has emerged. The advanced molecular studies support the long-existing principles and disclose the great variability of individuals and their responses to adverse exposures. In this way, the future of teratology counseling may be seen in a deep analysis of any individual case.

Accounting 202, 302.

ERIC Educational Resources Information Center

Manitoba Dept. of Education, Winnipeg.

This teaching guide consists of guidelines for conducting two secondary-level introductory accounting courses. Intended for vocational business education students, the courses are designed to introduce financial principles and practices important to personal and business life, to promote development of clerical and bookkeeping skills sufficient…

The Urban Dust Dome: A Demonstration Model

ERIC Educational Resources Information Center

Cross, Ralph D.

1973-01-01

Working plans for an inexpensive urban dust dome model are presented together with some generalizations about urban atmosphere pollution. Theories and principles of atmospheric pollution which are introduced can be made meaningful to elementary students through classroom use of this model. (SM)

Green Chemistry and Education.

ERIC Educational Resources Information Center

Hjeresen, Dennis L.; Schutt, David L.; Boese, Janet M.

2000-01-01

Many students today are profoundly interested in the sustainability of their world. Introduces Green Chemistry and its principles with teaching materials. Green Chemistry is the use of chemistry for pollution prevention and the design of chemical products and processes that are environmentally benign. (ASK)

Kool-Aid Chromatography

ERIC Educational Resources Information Center

Jenkins, Christie L.

1986-01-01

Offers guidelines and suggests activities that can introduce middle school students to the process and principles of chromatography in an inexpensive and safe manner. Proposes that experiences with Kool-aid and food coloring chromatography can provide insights into how scientists think, work, and communicate. (ML)

Large Deviations for Stochastic Models of Two-Dimensional Second Grade Fluids

DOE Office of Scientific and Technical Information (OSTI.GOV)

Zhai, Jianliang, E-mail: zhaijl@ustc.edu.cn; Zhang, Tusheng, E-mail: Tusheng.Zhang@manchester.ac.uk

2017-06-15

In this paper, we establish a large deviation principle for stochastic models of incompressible second grade fluids. The weak convergence method introduced by Budhiraja and Dupuis (Probab Math Statist 20:39–61, 2000) plays an important role.

Raman chemical imaging technology for food and agricultural applications

USDA-ARS?s Scientific Manuscript database

This paper presents Raman chemical imaging technology for inspecting food and agricultural products. The paper puts emphasis on introducing and demonstrating Raman imaging techniques for practical uses in food analysis. The main topics include Raman scattering principles, Raman spectroscopy measurem...

Intercultural Action Learning within a Business Context.

ERIC Educational Resources Information Center

Sand, Gregory A.

1996-01-01

Describes an intercultural program adapted to international marketing requirements by GLOBALTEAM, a marketing consultancy. GLOBALTEAM aims to increase sales by introducing corporate managers and workers to merchandising principles and standards. Training stresses goal setting, appropriate change atmosphere, task-force organization, operational…

Development of a multi-criteria evaluation system to assess growing pig welfare.

PubMed

Martín, P; Traulsen, I; Buxadé, C; Krieter, J

2017-03-01

The aim of this paper was to present an alternative multi-criteria evaluation model to assess animal welfare on farms based on the Welfare Quality® (WQ) project, using an example of welfare assessment of growing pigs. The WQ assessment protocol follows a three-step aggregation process. Measures are aggregated into criteria, criteria into principles and principles into an overall assessment. This study focussed on the first step of the aggregation. Multi-attribute utility theory (MAUT) was used to produce a value of welfare for each criterion. The utility functions and the aggregation function were constructed in two separated steps. The Measuring Attractiveness by a Categorical Based Evaluation Technique (MACBETH) method was used for utility function determination and the Choquet Integral (CI) was used as an aggregation operator. The WQ decision-makers' preferences were fitted in order to construct the utility functions and to determine the CI parameters. The methods were tested with generated data sets for farms of growing pigs. Using the MAUT, similar results were obtained to the ones obtained applying the WQ protocol aggregation methods. It can be concluded that due to the use of an interactive approach such as MACBETH, this alternative methodology is more transparent and more flexible than the methodology proposed by WQ, which allows the possibility to modify the model according, for instance, to new scientific knowledge.

A methodology for adaptable and robust ecosystem services assessment.

PubMed

Villa, Ferdinando; Bagstad, Kenneth J; Voigt, Brian; Johnson, Gary W; Portela, Rosimeiry; Honzák, Miroslav; Batker, David

2014-01-01

Ecosystem Services (ES) are an established conceptual framework for attributing value to the benefits that nature provides to humans. As the promise of robust ES-driven management is put to the test, shortcomings in our ability to accurately measure, map, and value ES have surfaced. On the research side, mainstream methods for ES assessment still fall short of addressing the complex, multi-scale biophysical and socioeconomic dynamics inherent in ES provision, flow, and use. On the practitioner side, application of methods remains onerous due to data and model parameterization requirements. Further, it is increasingly clear that the dominant "one model fits all" paradigm is often ill-suited to address the diversity of real-world management situations that exist across the broad spectrum of coupled human-natural systems. This article introduces an integrated ES modeling methodology, named ARIES (ARtificial Intelligence for Ecosystem Services), which aims to introduce improvements on these fronts. To improve conceptual detail and representation of ES dynamics, it adopts a uniform conceptualization of ES that gives equal emphasis to their production, flow and use by society, while keeping model complexity low enough to enable rapid and inexpensive assessment in many contexts and for multiple services. To improve fit to diverse application contexts, the methodology is assisted by model integration technologies that allow assembly of customized models from a growing model base. By using computer learning and reasoning, model structure may be specialized for each application context without requiring costly expertise. In this article we discuss the founding principles of ARIES--both its innovative aspects for ES science and as an example of a new strategy to support more accurate decision making in diverse application contexts.

A methodology for adaptable and robust ecosystem services assessment

USGS Publications Warehouse

Villa, Ferdinando; Bagstad, Kenneth J.; Voigt, Brian; Johnson, Gary W.; Portela, Rosimeiry; Honzák, Miroslav; Batker, David

2014-01-01

Ecosystem Services (ES) are an established conceptual framework for attributing value to the benefits that nature provides to humans. As the promise of robust ES-driven management is put to the test, shortcomings in our ability to accurately measure, map, and value ES have surfaced. On the research side, mainstream methods for ES assessment still fall short of addressing the complex, multi-scale biophysical and socioeconomic dynamics inherent in ES provision, flow, and use. On the practitioner side, application of methods remains onerous due to data and model parameterization requirements. Further, it is increasingly clear that the dominant “one model fits all” paradigm is often ill-suited to address the diversity of real-world management situations that exist across the broad spectrum of coupled human-natural systems. This article introduces an integrated ES modeling methodology, named ARIES (ARtificial Intelligence for Ecosystem Services), which aims to introduce improvements on these fronts. To improve conceptual detail and representation of ES dynamics, it adopts a uniform conceptualization of ES that gives equal emphasis to their production, flow and use by society, while keeping model complexity low enough to enable rapid and inexpensive assessment in many contexts and for multiple services. To improve fit to diverse application contexts, the methodology is assisted by model integration technologies that allow assembly of customized models from a growing model base. By using computer learning and reasoning, model structure may be specialized for each application context without requiring costly expertise. In this article we discuss the founding principles of ARIES - both its innovative aspects for ES science and as an example of a new strategy to support more accurate decision making in diverse application contexts.

Current Challenges in Geothermal Reservoir Simulation

NASA Astrophysics Data System (ADS)

Driesner, T.

2016-12-01

Geothermal reservoir simulation has long been introduced as a valuable tool for geothermal reservoir management and research. Yet, the current generation of simulation tools faces a number of severe challenges, in particular in the application for novel types of geothermal resources such as supercritical reservoirs or hydraulic stimulation. This contribution reviews a number of key problems: Representing the magmatic heat source of high enthalpy resources in simulations. Current practice is representing the deeper parts of a high enthalpy reservoir by a heat flux or temperature boundary condition. While this is sufficient for many reservoir management purposes it precludes exploring the chances of very high enthalpy resources in the deepest parts of such systems as well as the development of reliable conceptual models. Recent 2D simulations with the CSMP++ simulation platform demonstrate the potential of explicitly including the heat source, namely for understanding supercritical resources. Geometrically realistic incorporation of discrete fracture networks in simulation. A growing number of simulation tools can, in principle, handle flow and heat transport in discrete fracture networks. However, solving the governing equations and representing the physical properties are often biased by introducing strongly simplifying assumptions. Including proper fracture mechanics in complex fracture network simulations remains an open challenge. Improvements of the simulating chemical fluid-rock interaction in geothermal reservoirs. Major improvements have been made towards more stable and faster numerical solvers for multicomponent chemical fluid rock interaction. However, the underlying thermodynamic models and databases are unable to correctly address a number of important regions in temperature-pressure-composition parameter space. Namely, there is currently no thermodynamic formalism to describe relevant chemical reactions in supercritical reservoirs. Overcoming this unsatisfactory situation requires fundamental research in high temperature physical chemistry rather than further numerical development.

A Methodology for Adaptable and Robust Ecosystem Services Assessment

PubMed Central

Villa, Ferdinando; Bagstad, Kenneth J.; Voigt, Brian; Johnson, Gary W.; Portela, Rosimeiry; Honzák, Miroslav; Batker, David

2014-01-01

Ecosystem Services (ES) are an established conceptual framework for attributing value to the benefits that nature provides to humans. As the promise of robust ES-driven management is put to the test, shortcomings in our ability to accurately measure, map, and value ES have surfaced. On the research side, mainstream methods for ES assessment still fall short of addressing the complex, multi-scale biophysical and socioeconomic dynamics inherent in ES provision, flow, and use. On the practitioner side, application of methods remains onerous due to data and model parameterization requirements. Further, it is increasingly clear that the dominant “one model fits all” paradigm is often ill-suited to address the diversity of real-world management situations that exist across the broad spectrum of coupled human-natural systems. This article introduces an integrated ES modeling methodology, named ARIES (ARtificial Intelligence for Ecosystem Services), which aims to introduce improvements on these fronts. To improve conceptual detail and representation of ES dynamics, it adopts a uniform conceptualization of ES that gives equal emphasis to their production, flow and use by society, while keeping model complexity low enough to enable rapid and inexpensive assessment in many contexts and for multiple services. To improve fit to diverse application contexts, the methodology is assisted by model integration technologies that allow assembly of customized models from a growing model base. By using computer learning and reasoning, model structure may be specialized for each application context without requiring costly expertise. In this article we discuss the founding principles of ARIES - both its innovative aspects for ES science and as an example of a new strategy to support more accurate decision making in diverse application contexts. PMID:24625496

Defending the social value of knowledge as a safeguard for public trust.

PubMed

Holzer, Felicitas S

2017-09-01

The 'socially valuable knowledge' (SVK) principle has been widely acknowledged as one of the most important guiding principles for biomedical research involving human subjects. The principle states that the potential of producing socially valuable knowledge is a necessary requirement, although not sufficient, for the ethical conduct of research projects. This is due to the assumption that the social value of knowledge avoids exploitation of research subjects and justifies the use of health resources. However, more recently, several authors have started interrogating the validity of SVK in research and offered various lines of argument against the SVK principle as a necessary constraint to research. In this article, I will reconstruct the main arguments of this discussion between defenders and debunkers of the SVK principle and offer a third way to consider the social value of knowledge in research studies. I will argue that the social value of knowledge can be supported by an independent justification. This justification of the SVK principle addresses the rationality and common interest of researchers. Thus, I will introduce the SVK principle as a safeguarding principle for public trust based on a conceptual framework by Alex John London. My approach justifies keeping the principle as a precautionary and rational requirement for human health research that all rational stakeholders can agree upon. © 2017 John Wiley & Sons Ltd.

Hands-on lessons in ergonomics for youth

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bennett, C; Alexandre, M; Jacobs, K

Ergonomics risk factors apply to everybody. Numerous adults have experienced disabling injuries related to use of computers and other forms of technology. Now children are using technology even more than adults. Increasingly ergonomics risk factors are being recognized as present in the world of children. Outreach to schools and the surrounding community by employers may help protect the future work force. A growing body of researchers believe that children can benefit from the early introduction of ergonomics awareness and preventative measures. While individual representatives of the educational system may embrace the concept of introducing ergonomics into the classroom, a numbermore » of barriers can prevent implementation of integrated programs. Some of the barriers to introducing ergonomics in schools have been absence of a tie to educational standards, the existing demands on teaching hours, and the absence of easily executable lesson plans. Ergonomics is rarely included in teacher training and professional ergonomics expertise is needed for the development of a class-based program. As part of Strategic Vision plan for 2025, a National Laboratory identified community outreach and the future workforces as key areas for initiatives. A series of hands-on interactive modules have been developed by professional ergonomics specialists. They are being tested with elementary, middle and high school students. Where possible, the content has been tied to the educational standards in the State of California in the USA. Currently the modules include grip strength, effective breathing, optimal keyboard and mouse positions, optimizing chairs, posture and movement, backpack safety and safe lifting. Each module takes the students through a related activity or experience. An individual worksheet asks them questions about the experience and guides them to consider implications in their activities of daily living. A module on hearing is under development. The goal is to have a toolkit that teachers can use in classrooms with minimal training. The kit will come with lesson plans, including background material, key points, questions and answers, possible homework assignments and references. It will include instructions and worksheets for students as well as the materials needed for each module. A pre- and posttest will be administered to test the awareness and understanding of the principles introduced in through the modules. This interactive session will offer the opportunity to for attendees to participate in some of the modules that have been developed to provide experiential demonstration of ergonomics principles. Attendees will experience ergonomics in action and be able to evaluate the applicability of the process in their own area in the world of ergonomics. The session will consist of 20 minutes introduction, 40 minutes working with the toolkit, finally another 30 minutes for questions or discussion for a total time of 90 minutes.« less

Growing Farm to School Programs Act of 2010

THOMAS, 111th Congress

Sen. Leahy, Patrick J. [D-VT

2010-03-16

Senate - 03/16/2010 Read twice and referred to the Committee on Agriculture, Nutrition, and Forestry. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

[Principles for molecular identification of traditional Chinese materia medica using DNA barcoding].

PubMed

Chen, Shi-Lin; Yao, Hui; Han, Jian-Ping; Xin, Tian-Yi; Pang, Xiao-Hui; Shi, Lin-Chun; Luo, Kun; Song, Jing-Yuan; Hou, Dian-Yun; Shi, Shang-Mei; Qian, Zhong-Zhi

2013-01-01

Since the research of molecular identification of Chinese Materia Medica (CMM) using DNA barcode is rapidly developing and popularizing, the principle of this method is approved to be listed in the Supplement of the Pharmacopoeia of the People's Republic of China. Based on the study on comprehensive samples, the DNA barcoding systems have been established to identify CMM, i.e. ITS2 as a core barcode and psbA-trnH as a complementary locus for identification of planta medica, and COI as a core barcode and ITS2 as a complementary locus for identification of animal medica. This article introduced the principle of molecular identification of CMM using DNA barcoding and its drafting instructions. Furthermore, its application perspective was discussed.

Common Principles and Multiculturalism

PubMed Central

Zahedi, Farzaneh; Larijani, Bagher

2009-01-01

Judgment on rightness and wrongness of beliefs and behaviors is a main issue in bioethics. Over centuries, big philosophers and ethicists have been discussing the suitable tools to determine which act is morally sound and which one is not. Emerging the contemporary bioethics in the West has resulted in a misconception that absolute westernized principles would be appropriate tools for ethical decision making in different cultures. We will discuss this issue by introducing a clinical case. Considering various cultural beliefs around the world, though it is not logical to consider all of them ethically acceptable, we can gather on some general fundamental principles instead of going to the extremes of relativism and absolutism. Islamic teachings, according to the presented evidence in this paper, fall in with this idea. PMID:23908720

Development of a surface topography instrument for automotive textured steel plate

NASA Astrophysics Data System (ADS)

Wang, Zhen; Wang, Shenghuai; Chen, Yurong; Xie, Tiebang

2010-08-01

The surface topography of automotive steel plate is decisive to its stamping, painting and image clarity performances. For measuring this kind of surface topography, an instrument has been developed based on the principle of vertical scanning white light microscopy interference principle. The microscopy interference system of this instrument is designed based on the structure of Linnik interference microscopy. The 1D worktable of Z direction is designed and introduced in details. The work principle of this instrument is analyzed. In measuring process, the interference microscopy is derived as a whole and the measured surface is scanned in vertical direction. The measurement accuracy and validity is verified by templates. Surface topography of textured steel plate is also measured by this instrument.

Common principles and multiculturalism.

PubMed

Zahedi, Farzaneh; Larijani, Bagher

2009-01-01

Judgment on rightness and wrongness of beliefs and behaviors is a main issue in bioethics. Over centuries, big philosophers and ethicists have been discussing the suitable tools to determine which act is morally sound and which one is not. Emerging the contemporary bioethics in the West has resulted in a misconception that absolute westernized principles would be appropriate tools for ethical decision making in different cultures. We will discuss this issue by introducing a clinical case. Considering various cultural beliefs around the world, though it is not logical to consider all of them ethically acceptable, we can gather on some general fundamental principles instead of going to the extremes of relativism and absolutism. Islamic teachings, according to the presented evidence in this paper, fall in with this idea.

A finite state, finite memory minimum principle, part 2. [a discussion of game theory, signaling, stochastic processes, and control theory

NASA Technical Reports Server (NTRS)

Sandell, N. R., Jr.; Athans, M.

1975-01-01

The development of the theory of the finite - state, finite - memory (FSFM) stochastic control problem is discussed. The sufficiency of the FSFM minimum principle (which is in general only a necessary condition) was investigated. By introducing the notion of a signaling strategy as defined in the literature on games, conditions under which the FSFM minimum principle is sufficient were determined. This result explicitly interconnects the information structure of the FSFM problem with its optimality conditions. The min-H algorithm for the FSFM problem was studied. It is demonstrated that a version of the algorithm always converges to a particular type of local minimum termed a person - by - person extremal.

Measures of Quantum Synchronization in Continuous Variable Systems

NASA Astrophysics Data System (ADS)

Mari, A.; Farace, A.; Didier, N.; Giovannetti, V.; Fazio, R.

2013-09-01

We introduce and characterize two different measures which quantify the level of synchronization of coupled continuous variable quantum systems. The two measures allow us to extend to the quantum domain the notions of complete and phase synchronization. The Heisenberg principle sets a universal bound to complete synchronization. The measure of phase synchronization is, in principle, unbounded; however, in the absence of quantum resources (e.g., squeezing) the synchronization level is bounded below a certain threshold. We elucidate some interesting connections between entanglement and synchronization and, finally, discuss an application based on quantum optomechanical systems.

Measures of quantum synchronization in continuous variable systems.

PubMed

Mari, A; Farace, A; Didier, N; Giovannetti, V; Fazio, R

2013-09-06

We introduce and characterize two different measures which quantify the level of synchronization of coupled continuous variable quantum systems. The two measures allow us to extend to the quantum domain the notions of complete and phase synchronization. The Heisenberg principle sets a universal bound to complete synchronization. The measure of phase synchronization is, in principle, unbounded; however, in the absence of quantum resources (e.g., squeezing) the synchronization level is bounded below a certain threshold. We elucidate some interesting connections between entanglement and synchronization and, finally, discuss an application based on quantum optomechanical systems.

Biosensor development.

PubMed

Ziegler, C; Göpel, W

1998-10-01

Current biosensor developments can be summarised by different trends. For traditional enzymatic biosensors such as glucose sensors, steady improvements of well known basic principles have been made in order to achieve better sensor stability. On the other hand, new affinity sensors such as nucleic acid sensors, transmembrane sensors, and sensors utilising whole cells or even cell networks have become of increasing interest. New ways to miniaturise biosensors and to control their interfaces down to the molecular level have been introduced (the bioelectronics approach). High-throughput screening based on various signal transduction principles has become of increasing importance.

The development and application of high energy laser protective material

NASA Astrophysics Data System (ADS)

Zhao, Xinying; Hu, Yihua; Zhao, Yizheng

2016-03-01

With the emergence of strong light source, laser weapons in the modern war, the threat of damage to the photoelectric sensor and the human eye, the laser protection technology has begun to be paid attention to and widespread concern. In the laser protective materials, we can divide it into the protective material based on the principle of linear optics and the protective material based on the principle of nonlinear optics. In this paper, two different mechanisms of laser protective materials are introduced, and their development and application are reviewed.

Application of fractography to core and outcrop fracture investigations

DOE Office of Scientific and Technical Information (OSTI.GOV)

Kulander, B.R.; Barton, C.C.; Dean, S.L.

1979-03-01

Purpose of this paper is to introduce geologists to the principles of fractography, especially those principles that govern the formation of fracture surface structures commonly observed in rocks. A knowledge of the inception mechanics governing the formation of a fracture's tendential and transient structures should provide geologists with a method to distinguish natural from coring-induced and handling-induced fractures in oriented core samples, and show how coring-induced fractures may be assisted in their formation by stresses that can be attributed to the drilling process. 118 figures.

Extension to linear dynamics for hybrid stress finite element formulation based on additional displacements

NASA Astrophysics Data System (ADS)

Sumihara, K.

Based upon legitimate variational principles, one microscopic-macroscopic finite element formulation for linear dynamics is presented by Hybrid Stress Finite Element Method. The microscopic application of Geometric Perturbation introduced by Pian and the introduction of infinitesimal limit core element (Baby Element) have been consistently combined according to the flexible and inherent interpretation of the legitimate variational principles initially originated by Pian and Tong. The conceptual development based upon Hybrid Finite Element Method is extended to linear dynamics with the introduction of physically meaningful higher modes.

Guided design of copper oxysulfide superconductors

DOE Office of Scientific and Technical Information (OSTI.GOV)

Yee, Chuck-Hou; Birol, Turan; Kotliar, Gabriel

2015-07-01

We describe a framework for designing novel materials, combining modern first-principles electronic-structure tools, materials databases, and evolutionary algorithms capable of exploring large configurational spaces. Guided by the chemical principles introduced by Antipov et al., for the design and synthesis of the Hg-based high-temperature superconductors, we apply our framework to screen 333 proposed compositions to design a new layered copper oxysulfide, Hg(CaS)2CuO2. We evaluate the prospects of superconductivity in this oxysulfide using theories based on charge-transfer energies, orbital distillation and uniaxial strain.

Age, growth, and mortality of introduced flathead catfish in Atlantic rivers and a review of other populations

USGS Publications Warehouse

Kwak, T.J.; Pine, William E.; Waters, D.S.

2006-01-01

Knowledge of individual growth and mortality rates of an introduced fish population is required to determine the success and degree of establishment as well as to predict the fish's impact on native fauna. The age and growth of flathead catfish Pylodictis olivaris have been studied extensively in the species' native and introduced ranges, and estimates have varied widely. We quantified individual growth rates and age structure of three introduced flathead catfish populations in North Carolina's Atlantic slope rivers using sagittal otoliths, determined trends in growth rates over time, compared these estimates among rivers in native and introduced ranges, and determined total mortality rates for each population. Growth was significantly faster in the Northeast Cape Fear River (NECFR) than in the Lumber and Neuse rivers. Fish in the NECFR grew to a total length of 700 mm by age 7, whereas fish in the Neuse and Lumber river populations reached this length by 8 and 10 years, respectively. The growth rates of fish in all three rivers were consistently higher than those of native riverine populations, similar to those of native reservoir populations, and slower than those of other introduced riverine populations. In general, recent cohorts (1998-2001 year-classes) in these three rivers exhibited slower growth among all ages than did cohorts previous to the 1998 year-class. The annual total mortality rate was similar among the three rivers, ranging from 0.16 to 0.20. These mortality estimates are considerably lower than those from the Missouri and Mississippi rivers, suggesting relatively low fishing mortality for these introduced populations. Overall, flathead catfish populations in reservoirs grow faster than those in rivers, the growth rates of introduced populations exceed those of native populations, and eastern United States populations grow faster than those in western states. Such trends constitute critical information for understanding and managing local populations.

Better management of multimorbidity: a critical look at the 'Ariadne principles'.

PubMed

Bower, Peter

2014-12-08

Primary care clinicians and researchers are growing increasingly aware of the prevalence of multimorbidity among long-term conditions, and the impact on patient experience, health, and utilisation of care. The correspondence paper by Muth et al. entitled 'The Ariadne principles: how to handle multimorbidity in primary care consultations' outlines new thinking on a better way to manage the challenges of decision-making in multimorbidity. The paper highlights the importance of shared treatment goals as a fundamental basis for more effective management. Although a welcome contribution to the literature, the principles raise a number of challenges: the complexities of achieving effective patient-centred assessment and goal-setting; how best to encourage implementation of new practices; and the current state of the evidence around multimorbidity and its management.Please see related article: http://www.biomedcentral.com/1741-7015/12/223.

The role of socio-technical principles in leveraging meaningful benefits from IT investments.

PubMed

Doherty, Neil F

2014-03-01

In recent years there has been a great deal of academic and practitioner interest in the role of 'benefits realisation management' [BRM] approaches, as a means of proactively leveraging value from IT investments. This growing body of work owes a very considerable, but as yet unacknowledged, debt to the work of Ken Eason, and other early socio-technical theorists. Consequently, the aim of this paper is to demonstrate, using the literature, how many of the principles, practices and techniques of BRM have evolved either directly or indirectly from socio-technical approaches to systems design. In so doing, this article makes a further important contribution to the literature by explicitly identifying the underlying principles and key practices of benefits realisation management. Copyright © 2012 Elsevier Ltd and The Ergonomics Society. All rights reserved.

The Provision of Healthcare to Young and Dependent Children: The Principles, Concepts, and Utility of the Children Act 1989.

PubMed

Bridgeman, Jo

2017-08-01

This article undertakes a thorough analysis of the case law concerned with the provision of healthcare to young and dependent children. It demonstrates how, despite the procedural changes introduced by the Children Act 1989 at an early stage in this body of case law, cases have continued to be brought to court by way of applications for the court to exercise its inherent jurisdiction or in wardship rather than using the orders introduced by the Act. In determining these cases, the court is focused upon its protective duty to the vulnerable but proceedings appear to be adversarial contests between the claims of adults to know what is best for the child in which the medical view normally prevails. Through consideration of the principles and concepts of the Children Act of parental responsibility, working together, the welfare principle and placing the child at the centre of care, this article demonstrates their utility, as yet to be fully realised, in relation to the responsibilities of parents, professionals, public authorities, and the courts concerned with the provision of healthcare to young and dependent children. © The Author 2017. Published by Oxford University Press; all rights reserved. For Permissions, please email: journals.permissions@oup.com.

Cracking the Code of Electronic Games: Some Lessons for Educators

ERIC Educational Resources Information Center

Alexander, Gadi; Eaton, Isabelle; Egan, Kieran

2010-01-01

Background/Context: Students' ready engagement in electronic games and the relative ease with which they sometimes learn complex rules have intrigued some educators and learning researchers. There has been growing interest in studying electronic gaming with the aim of trying to work out how learning principles that are evident in games can be…

Pre-Service Teachers Designing and Constructing "Good Digital Games"

ERIC Educational Resources Information Center

Artym, Corbett; Carbonaro, Mike; Boechler, Patricia

2016-01-01

There is a growing interest in the application of digital games to enhance learning across many educational levels. This paper investigates pre-service teachers' ability to operationalize the learning principles that are considered part of a good digital game (Gee, 2007) by designing digital games in Scratch. Forty pre-service teachers, enrolled…

The Possibilities and Limitations of Applying "Open Data" Principles in Schools

ERIC Educational Resources Information Center

Selwyn, Neil; Henderson, Michael; Chao, Shu-Hua

2017-01-01

Large quantities of data are now being generated, collated and processed within schools through computerised systems and other digital technologies. In response to growing concerns over the efficiency and equity of how these data are used, the concept of "open data" has emerged as a potential means of using digital technology to…

Motivational Dynamics in Language Learning: Change, Stability, and Context

ERIC Educational Resources Information Center

Waninge, Freerkien; Dörnyei, Zoltán; De Bot, Kees

2014-01-01

Motivation as a variable in L2 development is no longer seen as the stable individual difference factor it was once believed to be: Influenced by process-oriented models and principles, and especially by the growing understanding of how complex dynamic systems work, researchers have been focusing increasingly on the dynamic and changeable nature…

Parent Handbook: Developing Your Child's Skills and Abilities at Home.

ERIC Educational Resources Information Center

Ahr, A. Edward; Simons, Benita

There is a growing belief among educators that parents can make an influential contribution to their children's educational opportunities by working with them on the development of certain skills in the years before the initiation of formal schooling. This parents' handbook attempts to supply a mixture of general principles and specific practices…

Guiding Principles: A Resource Guide for Improving School Climate and Discipline

ERIC Educational Resources Information Center

US Department of Education, 2014

2014-01-01

Developing positive school climates and improving school discipline policies and practices are critical steps to raising academic achievement and supporting student success. However, there is no single formula for doing so. Rather, the growing body of research and best practices in the field should inform locally developed approaches to improving…

Toward a Model for Early Childhood Environmental Education: Foregrounding, Developing, and Connecting Knowledge through Play-Based Learning

ERIC Educational Resources Information Center

Cutter-Mackenzie, Amy; Edwards, Susan

2013-01-01

Environmental education represents a growing area of interest in early childhood education, especially since the inclusion of environmental principles and practices in the Australian Early Years Learning Framework. Traditionally, these two fields of education have been characterized by diverse pedagogical emphases. This article considers how…

What's Next? Experiences of a Formal Course for Academic Developers

ERIC Educational Resources Information Center

Skead, Melanie

2018-01-01

A growing impetus for disciplinary status for academic development has prompted efforts to construct a principled knowledge base in this emerging field. This paper considers the impact of academic developers' access to structured knowledge through a systematic process. In 2011, the Centre for Higher Education Research, Teaching and Learning at…

Connecting Vulnerable Children and Families to Community-Based Programs Strengthens Parents' Perceptions of Protective Factors

ERIC Educational Resources Information Center

Hughes, Marcia; Joslyn, Allison; Wojton, Morella; O'Reilly, Mairead; Dworkin, Paul H.

2016-01-01

We employed principles from a nationally recognized prevention model on family support to investigate whether connecting vulnerable children to community-based programs and services through a statewide intervention system, the "Help Me Grow" program, strengthens parents' perceptions of protective factors. We used a parent survey modeled…

Post Modern and Effective: The Pyramid Program for Three-to-Six-Year-Olds.

ERIC Educational Resources Information Center

van Kuyk, Jef J.

A 3-year experiment evaluated the effectiveness of the Pyramid program, an educational program for young children from deprived situations and based on two concepts: psychological nearness (principles of attachment theory) and psychological distance (derived from developmental distancing, or the growing ability of a child to comprehend that an…

Say Cheese! A Snapshot of Elementary Teachers' Engagement and Motivation for Classroom Assessment

ERIC Educational Resources Information Center

Black, Glenda L.

2014-01-01

Assessment is a complex function requiring an understanding of student learning, assessment principles, practices, and purposes of data to implement effective classroom assessment. The purpose of this study was to add to the growing base of knowledge about teachers' engagement with assessment data and their motivation for classroom assessment.…

Inclusive Values: Exploring the Perspectives of Pre-Service Teachers

ERIC Educational Resources Information Center

Mergler, Amanda; Carrington, Suzanne; Kimber, Megan; Bland, Derek

2016-01-01

Since the turn of the century there has been an increasing focus on inclusive education in Australian schools, and growing interest in understanding how the values of pre-service teachers impact on their willingness to implement inclusive principles in their future classrooms. The current qualitative study explored the values and views toward…

Incorporating Molecular and Cellular Biology into a Chemical Engineering Degree Program

ERIC Educational Resources Information Center

O'Connor, Kim C.

2005-01-01

There is a growing need for a workforce that can apply engineering principles to molecular based discovery and product development in the biological sciences. To this end, Tulane University established a degree program that incorporates molecular and cellular biology into the chemical engineering curriculum. In celebration of the tenth anniversary…

We Are the Champions: Organizational Learning and Change for Responsible Management Education

ERIC Educational Resources Information Center

Solitander, Nikodemus; Fougere, Martin; Sobczak, Andre; Herlin, Heidi

2012-01-01

As the number of institutions adopting the United Nations' Principles for Responsible Management Education (PRME) initiative grows, there is an overhanging risk that many of them will merely add "responsibility" as a topic to the existing curriculum. The authors contend that a serious reading of PRME should instead entail thinking in…

Maker Principles and Technologies in Teacher Education: A National Survey

ERIC Educational Resources Information Center

Cohen, Jonathan

2017-01-01

Broadly speaking, the maker movement is characterized by people who engage in the construction, deconstruction, and reconstruction of physical artifacts, and who share both the process of making and their physical products with the broader community of makers. There is growing sentiment that elements of the maker movement have the capability of…

Voices from the Other Side of the Fence: Early Childhood Teachers' Experiences with Mandatory Regulatory Requirements

ERIC Educational Resources Information Center

Bown, Kathryn; Sumsion, Jennifer

2007-01-01

Guided by feminist research principles, the study reported in this article contributes to the growing research dialogue on early childhood teachers' experiences with, and perceptions of, the impact of regulatory requirements on their teaching and on their perceptions of themselves as professionals. Specifically, three teachers from metropolitan…

Usability Studies and User-Centered Design in Digital Libraries

ERIC Educational Resources Information Center

Comeaux, David J.

2008-01-01

Digital libraries continue to flourish. At the same time, the principles of user-centered design and the practice of usability testing have been growing in popularity, spreading their influence into the library sphere. This article explores the confluence of these two trends by surveying the current literature on usability studies of digital…

Electrochemical Hydrogen Evolution: Sabatier's Principle and the Volcano Plot

ERIC Educational Resources Information Center

Laursen, Anders B.; Varela, Ana Sofia; Dionigi, Fabio; Fanchiu, Hank; Miller, Chandler; Trinhammer, Ole L.; Rossmeisl, Jan; Dahl, Soren

2012-01-01

The electrochemical hydrogen evolution reaction (HER) is growing in significance as society begins to rely more on renewable energy sources such as wind and solar power. Thus, research on designing new, inexpensive, and abundant HER catalysts is important. Here, we describe how a simple experiment combined with results from density functional…

New Rural Livelihoods or Museums of Production? Quality Food Initiatives in Practice

ERIC Educational Resources Information Center

Bowen, Sarah; De Master, Kathryn

2011-01-01

In recent years, the European Union's stated commitment to the principle of multifunctionality within its Common Agricultural Policy has fostered a resurgence of interest in recovering and protecting the heritage and traditions associated with local agricultural products. In spite of, or perhaps because of, the growing political and economic…

Research-Based Reading Instruction in an Adult Basic Education Program

ERIC Educational Resources Information Center

Perin, Dolores; Greenberg, Daphne

2007-01-01

There is a growing emphasis in adult basic education on research-based reading instruction. Using Kruidenier's (2002) framework of principles and trends, we describe research-based techniques found during a visit to an adult basic education program. We also describe how the program moved to research-based instruction, and the factors that seem…

The Application of Adult Learning Principles in Effective Preaching

ERIC Educational Resources Information Center

DeVille, Randall C.

2012-01-01

Evidence suggests that a disconnect is growing between the information provided in Christian sermons and the life challenges faced by those church attendees. To bridge that divide, the purpose of this study was to better understand the characteristics of a sermon that enhance learning for churchgoers in Christian churches. The guiding question…

The basic principles of migration health: Population mobility and gaps in disease prevalence

PubMed Central

Gushulak, Brian D; MacPherson, Douglas W

2006-01-01

Currently, migrants and other mobile individuals, such as migrant workers and asylum seekers, are an expanding global population of growing social, demographic and political importance. Disparities often exist between a migrant population's place of origin and its destination, particularly with relation to health determinants. The effects of those disparities can be observed at both individual and population levels. Migration across health and disease disparities influences the epidemiology of certain diseases globally and in nations receiving migrants. While specific disease-based outcomes may vary between migrant group and location, general epidemiological principles may be applied to any situation where numbers of individuals move between differences in disease prevalence. Traditionally, migration health activities have been designed for national application and lack an integrated international perspective. Present and future health challenges related to migration may be more effectively addressed through collaborative global undertakings. This paper reviews the epidemiological relationships resulting from health disparities bridged by migration and describes the growing role of migration and population mobility in global disease epidemiology. The implications for national and international health policy and program planning are presented. PMID:16674820

Water System Adaptation To Hydrological Changes: Module 15, Course Summary and Project Presentation

EPA Science Inventory

This course will introduce students to the fundamental principles of water system adaptation to hydrological changes, with emphasis on data analysis and interpretation, technical planning, and computational modeling. Starting with real-world scenarios and adaptation needs, the co...

How Should Equation Balancing Be Taught?

ERIC Educational Resources Information Center

Porter, Spencer K.

1985-01-01

Matrix methods and oxidation-number methods are currently advocated and used for balancing equations. This article shows how balancing equations can be introduced by a third method which is related to a fundamental principle, is easy to learn, and is powerful in its application. (JN)

Integrity Is More than Validity: Seeking Credible, Usable, and Ethical Research

ERIC Educational Resources Information Center

Rallis, Sharon F.; Lawrence, Rachael B.

2017-01-01

This chapter introduces integrity and use as central concepts for judging research quality. Analyzing an illustrative case through the NRC Guiding Principles for Education Research and Terenzini's tiers of intelligence, we demonstrate the centrality of research integrity to use.

Microscale Group Test for Carbonyl Compounds.

ERIC Educational Resources Information Center

Horak, V.; Klein, R. F. X.

1985-01-01

Procedures are provided for a test that (1) demonstrates principles of derivatization with 2,4-dinitrophenylhydrazine; (2) is a thin layer chromatography experiment that visually demonstrates separation of colored compounds of different polarities; and (3) introduces microscale experimentation to students in sophomore organic chemistry…

Water System Adaptation To Hydrological Changes: Module 11, Methods and Tools: Computational Models

EPA Science Inventory

This course will introduce students to the fundamental principles of water system adaptation to hydrological changes, with emphasis on data analysis and interpretation, technical planning, and computational modeling. Starting with real-world scenarios and adaptation needs, the co...

A Mechanical Lattice Aid for Crystallography Teaching.

ERIC Educational Resources Information Center

Amezcua-Lopez, J.; Cordero-Borboa, A. E.

1988-01-01

Introduces a 3-dimensional mechanical lattice with adjustable telescoping mechanisms. Discusses the crystalline state, the 14 Bravais lattices, operational principles of the mechanical lattice, construction methods, and demonstrations in classroom. Provides lattice diagrams, schemes of the lattice, and various pictures of the lattice. (YP)

Infusing Culture in Career Counseling

ERIC Educational Resources Information Center

Arthur, Nancy; Collins, Sandra

2011-01-01

This article introduces the culture-infused career counselling (CICC) model. Six principles are foundational to a tripartite model emphasizing cultural self-awareness, awareness of client cultural identities, and development of a culturally sensitive working alliance. The core competencies ensure the cultural validity and relevance of career…

Undocumented Students at the Community College: Creating Institutional Capacity

ERIC Educational Resources Information Center

Valenzuela, Jéssica I.; Perez, William; Perez, Iliana; Montiel, Gloria Itzel; Chaparro, Gabriel

2015-01-01

This chapter introduces Institutional Undocu-Competence (IUC), an institutional capacity framework emerging from a critical analysis of cultural competence, aimed to inform community colleges' efforts to better support the growing undocumented student population.

Moving code - Sharing geoprocessing logic on the Web

NASA Astrophysics Data System (ADS)

Müller, Matthias; Bernard, Lars; Kadner, Daniel

2013-09-01

Efficient data processing is a long-standing challenge in remote sensing. Effective and efficient algorithms are required for product generation in ground processing systems, event-based or on-demand analysis, environmental monitoring, and data mining. Furthermore, the increasing number of survey missions and the exponentially growing data volume in recent years have created demand for better software reuse as well as an efficient use of scalable processing infrastructures. Solutions that address both demands simultaneously have begun to slowly appear, but they seldom consider the possibility to coordinate development and maintenance efforts across different institutions, community projects, and software vendors. This paper presents a new approach to share, reuse, and possibly standardise geoprocessing logic in the field of remote sensing. Drawing from the principles of service-oriented design and distributed processing, this paper introduces moving-code packages as self-describing software components that contain algorithmic code and machine-readable descriptions of the provided functionality, platform, and infrastructure, as well as basic information about exploitation rights. Furthermore, the paper presents a lean publishing mechanism by which to distribute these packages on the Web and to integrate them in different processing environments ranging from monolithic workstations to elastic computational environments or "clouds". The paper concludes with an outlook toward community repositories for reusable geoprocessing logic and their possible impact on data-driven science in general.

Determination of Microalgal Lipid Content and Fatty Acid for Biofuel Production

PubMed Central

Chen, Zhipeng; Wang, Lingfeng

2018-01-01

Biofuels produced from microalgal biomass have received growing worldwide recognition as promising alternatives to conventional petroleum-derived fuels. Among the processes involved, the downstream refinement process for the extraction of lipids from biomass greatly influences the sustainability and efficiency of the entire biofuel system. This review summarizes and compares the current techniques for the extraction and measurement of microalgal lipids, including the gravimetric methods using organic solvents, CO2-based solvents, ionic liquids and switchable solvents, Nile red lipid visualization method, sulfo-phospho-vanillin method, and the thin-layer chromatography method. Each method has its own competitive advantages and disadvantages. For example, the organic solvents-based gravimetric method is mostly used and frequently employed as a reference standard to validate other methods, but it requires large amounts of samples and is time-consuming and expensive to recover solvents also with low selectivity towards desired products. The pretreatment approaches which aimed to disrupt cells and support subsequent lipid extraction through bead beating, microwave, ultrasonication, chemical methods, and enzymatic disruption are also introduced. Moreover, the principles and procedures for the production and quantification of fatty acids are finally described in detail, involving the preparation of fatty acid methyl esters and their quantification and composition analysis by gas chromatography.

Green Urbanism for the Greener Future of Metropolitan Areas

NASA Astrophysics Data System (ADS)

Zaręba, Anna; Krzemińska, Alicja; Widawski, Krzysztof

2016-10-01

Intensive urbanization is swallowing municipal green areas which causes intensification of erosion, decrease in biodiversity and permanent fragmentation of habitats. In the face of these changes, a risk of irreversible damages to urban ecosystems is growing. That is why planning of solutions within the framework of Green Urbanism in metropolitan areas inhabited by over 55% of the global population is of extraordinary importance. The task of the paper is to present patterns of the Green Urbanism using selected examples of metropolitan areas as case studies. The main goal of the research is to make comparison between GU practices in different countries, in various spatial settings. The principles of triple zero framework: zero fossil-fuel energy use, zero waste, zero emissions (from low-to-no-carbon emissions) introduce not only the contemporary trends in theoretical urban planning but are dictated by practical considerations to create a healthy environment for a healthy society with a minimized environmental footprint. The research results help to identify Green Urbanism techniques used for multiple functions, including ecological, recreational, cultural, aesthetic and other uses and present opportunities for implementation of Green Urbanism solutions in metropolitan areas. To achieve healthier society and environment, highly congested and polluted cities have to be recreated through working with the existing landscape, topography and natural resources particular to the site.

Safeguarding the child athlete in sport: a review, a framework and recommendations for the IOC youth athlete development model

PubMed Central

Mountjoy, M; Rhind, D J A; Tiivas, A; Leglise, M

2015-01-01

Participation in sport has many physical, psychological and social benefits for the child athlete. A growing body of evidence indicates, however, that sport participation may have inherent threats for the child’s well-being. The subject of safeguarding children in sport has seen an increase in scientific study in recent years. In particular, there is increasing emphasis on identifying who is involved in abuse, the context of where it occurs and the identification of the various forms of abuse that take place in the sporting domain. Safeguarding principles developed by the International Safeguarding Children in Sport Founders Group are presented along with 8 underlying pillars which underpin the successful adoption and implementation of safeguarding strategies. This safeguarding model is designed to assist sport organisations in the creation of a safe sporting environment to ensure that the child athlete can flourish and reach their athletic potential through an enjoyable experience. The aim of this narrative review is to (1) present a summary of the scientific literature on the threats to children in sport; (2) introduce a framework to categorise these threats; (3) identify research gaps in the field and (4) provide safeguarding recommendations for sport organisations. PMID:26084527

Detection of local chemical states of lithium and their spatial mapping by scanning transmission electron microscopy, electron energy-loss spectroscopy and hyperspectral image analysis.

PubMed

Muto, Shunsuke; Tatsumi, Kazuyoshi

2017-02-08

Advancements in the field of renewable energy resources have led to a growing demand for the analysis of light elements at the nanometer scale. Detection of lithium is one of the key issues to be resolved for providing guiding principles for the synthesis of cathode active materials, and degradation analysis after repeated use of those materials. We have reviewed the different techniques currently used for the characterization of light elements such as high-resolution transmission electron microscopy, scanning transmission electron microscopy (STEM) and electron energy-loss spectroscopy (EELS). In the present study, we have introduced a methodology to detect lithium in solid materials, particularly for cathode active materials used in lithium-ion battery. The chemical states of lithium were isolated and analyzed from the overlapping multiple spectral profiles, using a suite of STEM, EELS and hyperspectral image analysis. The method was successfully applied in the chemical state analyses of hetero-phases near the surface and grain boundary regions of the active material particles formed by chemical reactions between the electrolyte and the active materials. © The Author 2016. Published by Oxford University Press on behalf of The Japanese Society of Microscopy. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

A systematic and efficient method for modeling acoustic response of multilayered media

NASA Astrophysics Data System (ADS)

Feng, Shi-Jin; Chen, Zhang-Long; Chen, Hong-Xin

2017-12-01

A generalized transmission and reflection matrix (GTRM) method for determining the acoustic response of multilayered media is developed in this paper. The principle of the method is to decipher the wave vectors by constructing generalized T/R matrices and recursive formulas. The generalized T/R matrices are introduced to account for the contributions of multiple reflection and transmission in a global manner. Three types of interface T/R matrices are developed to accommodate the coupling between any type of physical medium. This method is not only stable for high-frequency and large thickness cases by excluding the growing terms but also explicitly exhibits the physical mechanism of wave propagation. Acoustic response in both frequency and time domains can be solved by the method. Moreover, the method has a simple framework, and it is easy to be implemented in numerical tools. The method is successfully validated by several typical acoustic problems, including poroelastic medium immersed in fluid, aluminum-glass-aluminum immersed in fluid, and poroelastic sediment sandwiched between water and bedrock. In fact, the present method can be extended to any physical problem of a multilayered structure. When the wave frequency is high or the layered media is greatly thick or the material combination is highly complex, the advantage of the GTRM method is more conspicuous.

ProteoWizard: open source software for rapid proteomics tools development.

PubMed

Kessner, Darren; Chambers, Matt; Burke, Robert; Agus, David; Mallick, Parag

2008-11-01

The ProteoWizard software project provides a modular and extensible set of open-source, cross-platform tools and libraries. The tools perform proteomics data analyses; the libraries enable rapid tool creation by providing a robust, pluggable development framework that simplifies and unifies data file access, and performs standard proteomics and LCMS dataset computations. The library contains readers and writers of the mzML data format, which has been written using modern C++ techniques and design principles and supports a variety of platforms with native compilers. The software has been specifically released under the Apache v2 license to ensure it can be used in both academic and commercial projects. In addition to the library, we also introduce a rapidly growing set of companion tools whose implementation helps to illustrate the simplicity of developing applications on top of the ProteoWizard library. Cross-platform software that compiles using native compilers (i.e. GCC on Linux, MSVC on Windows and XCode on OSX) is available for download free of charge, at http://proteowizard.sourceforge.net. This website also provides code examples, and documentation. It is our hope the ProteoWizard project will become a standard platform for proteomics development; consequently, code use, contribution and further development are strongly encouraged.

Primer in Genetics and Genomics, Article 2-Advancing Nursing Research With Genomic Approaches.

PubMed

Lee, Hyunhwa; Gill, Jessica; Barr, Taura; Yun, Sijung; Kim, Hyungsuk

2017-03-01

Nurses investigate reasons for variable patient symptoms and responses to treatments to inform how best to improve outcomes. Genomics has the potential to guide nursing research exploring contributions to individual variability. This article is meant to serve as an introduction to the novel methods available through genomics for addressing this critical issue and includes a review of methodological considerations for selected genomic approaches. This review presents essential concepts in genetics and genomics that will allow readers to identify upcoming trends in genomics nursing research and improve research practice. It introduces general principles of genomic research and provides an overview of the research process. It also highlights selected nursing studies that serve as clinical examples of the use of genomic technologies. Finally, the authors provide suggestions about how to apply genomic technology in nursing research along with directions for future research. Using genomic approaches in nursing research can advance the understanding of the complex pathophysiology of disease susceptibility and different patient responses to interventions. Nurses should be incorporating genomics into education, clinical practice, and research as the influence of genomics in health-care research and practice continues to grow. Nurses are also well placed to translate genomic discoveries into improved methods for patient assessment and intervention.

Colors of the Yellowstone thermal pools for teaching optics

NASA Astrophysics Data System (ADS)

Shaw, J. A.; Nugent, P. W.; Vollmer, M.

2015-10-01

Nature provides many beautiful optical phenomena that can be used to teach optical principles. Here we describe an interdisciplinary education project based on a simple computer model of the colors observed in the famous thermal pools of Yellowstone National Park in the northwestern United States. The primary wavelength-dependent parameters that determine the widely varying pool colors are the reflectance of the rocks or the microbial mats growing on the rocks beneath the water (the microbial mat color depends on water temperature) and optical absorption and scattering in the water. This paper introduces a teaching module based on a one-dimensional computer model that starts with measured reflectance spectra of the microbial mats and modifies the spectra with depth-dependent absorption and scattering in the water. This module is designed to be incorporated into a graduate course on remote sensing systems, in a section covering the propagation of light through air and water, although it could be adapted to a general university optics course. The module presents the basic 1-D radiative transfer equation relevant to this problem, and allows them to build their own simple model. Students can then simulate the colors that would be observed for different variations of the microbial mat reflectance spectrum, skylight spectrum, and water depth.

Age-related inequalities in health and healthcare: the life stages approach.

PubMed

Jecker, Nancy S

2018-06-01

How should healthcare systems prepare to care for growing numbers and proportions of older people? Older people generally suffer worse health than younger people do. Should societies take steps to reduce age-related health inequalities? Some express concern that doing so would increase age-related inequalities in healthcare. This paper addresses this debate by (1) presenting an argument in support of three principles for distributing scarce resources between age groups; (2) framing these principles of age group justice in terms of life stages; and (3) indicating policy implications that merit further attention in light of rapidly aging societies. © 2017 John Wiley & Sons Ltd.

The potentiality of medicinal plants as the source of new contraceptive principles in males

PubMed Central

Ogbuewu, Ifeanyi Princewill; Unamba-Oparah, Ihemdirim Chukwuma; Odoemenam, Victor Udodirim; Etuk, Idorenyin Friday; Okoli, Ifeanyi Charles

2011-01-01

Rising human population throughout the world especially in developing and underdeveloped countries has detrimental effects on life supporting system on earth. Traditionally, plants have been used to treat different kinds of ailments. The growing importance of phytochemicals in males has been reported. Contraceptive ability of plants has been reported in several animal models. The reversibility of the anti-fertility effects of plants and its active compounds are of potential clinical relevance in the development of male contraceptive. This review attempts to discuss the latest reports on the potentiality of medicinal plants as the source of new contraceptive principles in males. PMID:22540095

An audience-channel-message-evaluation (ACME) framework for health communication campaigns.

PubMed

Noar, Seth M

2012-07-01

Recent reviews of the literature have indicated that a number of health communication campaigns continue to fail to adhere to principles of effective campaign design. The lack of an integrated, organizing framework for the design, implementation, and evaluation of health communication campaigns may contribute to this state of affairs. The current article introduces an audience-channel-message-evaluation (ACME) framework that organizes the major principles of health campaign design, implementation, and evaluation. ACME also explicates the relationships and linkages between the varying principles. Insights from ACME include the following: The choice of audience segment(s) to focus on in a campaign affects all other campaign design choices, including message strategy and channel/component options. Although channel selection influences options for message design, choice of message design also influences channel options. Evaluation should not be thought of as a separate activity, but rather should be infused and integrated throughout the campaign design and implementation process, including formative, process, and outcome evaluation activities. Overall, health communication campaigns that adhere to this integrated set of principles of effective campaign design will have a greater chance of success than those using principles idiosyncratically. These design, implementation, and evaluation principles are embodied in the ACME framework.

Combination of confocal principle and aperture stop separation improves suppression of crystalline lens fluorescence in an eye model.

PubMed

Klemm, Matthias; Blum, Johannes; Link, Dietmar; Hammer, Martin; Haueisen, Jens; Schweitzer, Dietrich

2016-09-01

Fluorescence lifetime imaging ophthalmoscopy (FLIO) is a new technique to detect changes in the human retina. The autofluorescence decay over time, generated by endogenous fluorophores, is measured in vivo. The strong autofluorescence of the crystalline lens, however, superimposes the intensity decay of the retina fluorescence, as the confocal principle is not able to suppress it sufficiently. Thus, the crystalline lens autofluorescence causes artifacts in the retinal fluorescence lifetimes determined from the intensity decays. Here, we present a new technique to suppress the autofluorescence of the crystalline lens by introducing an annular stop into the detection light path, which we call Schweitzer's principle. The efficacy of annular stops with an outer diameter of 7 mm and inner diameters of 1 to 5 mm are analyzed in an experimental setup using a model eye based on fluorescent dyes. Compared to the confocal principle, Schweitzer's principle with an inner diameter of 3 mm is able to reduce the simulated crystalline lens fluorescence to 4%, while 42% of the simulated retina fluorescence is preserved. Thus, we recommend the implementation of Schweitzer's principle in scanning laser ophthalmoscopes used for fundus autofluorescence measurements, especially the FLIO device, for improved image quality.

Thermoelectric properties of nanocrystalline Sb2Te3 thin films: experimental evaluation and first-principles calculation, addressing effect of crystal grain size.

PubMed

Morikawa, Satoshi; Inamoto, Takuya; Takashiri, Masayuki

2018-02-16

The effect of crystal grain size on the thermoelectric properties of nanocrystalline antimony telluride (Sb 2 Te 3 ) thin films was investigated by experiments and first-principles studies using a developed relaxation time approximation. The Sb 2 Te 3 thin films were deposited on glass substrates using radio-frequency magnetron sputtering. To change the crystal grain size of the Sb 2 Te 3 thin films, thermal annealing was performed at different temperatures. The crystal grain size, lattice parameter, and crystal orientation of the thin films were estimated using XRD patterns. The carrier concentration and in-plane thermoelectric properties of the thin films were measured at room temperature. A theoretical analysis was performed using a first-principles study based on density functional theory. The electronic band structures of Sb 2 Te 3 were calculated using different lattice parameters, and the thermoelectric properties were predicted based on the semi-classical Boltzmann transport equation in the relaxation time approximation. In particular, we introduced the effect of carrier scattering at the grain boundaries into the relaxation time approximation by estimating the group velocities from the electronic band structures. Finally, the experimentally measured thermoelectric properties were compared with those obtained by calculation. As a result, the calculated thermoelectric properties were found to be in good agreement with the experimental results. Therefore, we can conclude that introducing the effect of carrier scattering at the grain boundaries into the relaxation time approximation contributes to enhance the accuracy of a first-principles calculation relating to nanocrystalline materials.

Thermoelectric properties of nanocrystalline Sb2Te3 thin films: experimental evaluation and first-principles calculation, addressing effect of crystal grain size

NASA Astrophysics Data System (ADS)

Morikawa, Satoshi; Inamoto, Takuya; Takashiri, Masayuki

2018-02-01

The effect of crystal grain size on the thermoelectric properties of nanocrystalline antimony telluride (Sb2Te3) thin films was investigated by experiments and first-principles studies using a developed relaxation time approximation. The Sb2Te3 thin films were deposited on glass substrates using radio-frequency magnetron sputtering. To change the crystal grain size of the Sb2Te3 thin films, thermal annealing was performed at different temperatures. The crystal grain size, lattice parameter, and crystal orientation of the thin films were estimated using XRD patterns. The carrier concentration and in-plane thermoelectric properties of the thin films were measured at room temperature. A theoretical analysis was performed using a first-principles study based on density functional theory. The electronic band structures of Sb2Te3 were calculated using different lattice parameters, and the thermoelectric properties were predicted based on the semi-classical Boltzmann transport equation in the relaxation time approximation. In particular, we introduced the effect of carrier scattering at the grain boundaries into the relaxation time approximation by estimating the group velocities from the electronic band structures. Finally, the experimentally measured thermoelectric properties were compared with those obtained by calculation. As a result, the calculated thermoelectric properties were found to be in good agreement with the experimental results. Therefore, we can conclude that introducing the effect of carrier scattering at the grain boundaries into the relaxation time approximation contributes to enhance the accuracy of a first-principles calculation relating to nanocrystalline materials.

Science Fair Projects: The Environment.

ERIC Educational Resources Information Center

Bonnet, Bob; Keen, Dan

This book approaches the development of science fair projects from the point of view that science should be enjoyable, interesting, and thought-provoking. The scientific concepts introduced here will later help young students to understand more advanced scientific principles. These projects develop skills such as classification, making measured…

Experiments To Demonstrate Chemical Process Safety Principles.

ERIC Educational Resources Information Center

Dorathy, Brian D.; Mooers, Jamisue A.; Warren, Matthew M.; Mich, Jennifer L.; Murhammer, David W.

2001-01-01

Points out the need to educate undergraduate chemical engineering students on chemical process safety and introduces the content of a chemical process safety course offered at the University of Iowa. Presents laboratory experiments demonstrating flammability limits, flash points, electrostatic, runaway reactions, explosions, and relief design.…

Multiculturalism: Being Canadian.

ERIC Educational Resources Information Center

Department of the Secretary of State, Ottawa (Ontario). Multiculturalism Directorate.

This booklet introduces Canada's Multiculturalism Act which provides for a new government-wide commitment to the principles and policy objectives of multiculturalism. As an essential component of the Canadian identity, multiculturalism has been fundamental to nation building and has allowed Canadians to enjoy the benefits of life in a culturally…

Introductory Course in Biomedical Ethics in the Obstetrics-Gynecology Residency.

ERIC Educational Resources Information Center

Elkins, Thomas E.

1988-01-01

Information used in a brief lecture that introduces a biomedical ethics curriculum in an obstetrics and gynecology residency is described. Major components include theories of philosophic ethics (formalist and consequentialist) and principles of biomedical ethics (honesty, contract-keeping, nonmaleficence, justice, autonomy, beneficence,…

A Theory of Intellectual Development: Part 1.

ERIC Educational Resources Information Center

Confrey, Jere

1994-01-01

Part 1 of a three-part article analyzing radical constructivism (as one interpretation of Piaget) and the socio-cultural perspective (as one interpretation of Vygotsky), including major principles, primary contributions to mathematics education, and potential limitations. Introduces an integration of the two theories through a feminist…

The Peroxidase-Glucose Oxidase Enzyme System in the Undergraduate Laboratory.

ERIC Educational Resources Information Center

Woolridge, Elisa; And Others

1986-01-01

Offers a series of experiments which introduce students to the general principles of enzymology. The experiment demonstrates several basic enzyme properties and the chromatographic exercises provide an analysis of each enzymatic activity. Questions are also presented for extending discussion on the activities. (ML)

Obsidian Hydration Dating in the Undergraduate Curriculum.

ERIC Educational Resources Information Center

Manche, Emanuel P.; Lakatos, Stephen

1986-01-01

Provides an overview of obsidian hydration dating for the instructor by presenting: (1) principles of the method; (2) procedures; (3) applications; and (4) limitations. The theory of the method and one or more laboratory exercises can be easily introduced into the undergraduate geology curriculum. (JN)

Variation and Linguistic Theory.

ERIC Educational Resources Information Center

Bailey, Charles-James N.

This volume presents principles and models for describing language variation, and introduces a time-based, dynamic framework for linguistic description. The book first summarizes some of the problems of grammatical description encountered from Saussure through the present and then outlines possibilities for new descriptions of language which take…

Water System Adaptation To Hydrological Changes: Module 8, Regulatory Framework Intersections: Past, Present, and Future

EPA Science Inventory

This course will introduce students to the fundamental principles of water system adaptation to hydrological changes, with emphasis on data analysis and interpretation, technical planning, and computational modeling. Starting with real-world scenarios and adaptation needs, the co...

Humanistic Intentionality in Clinical Collaboration

ERIC Educational Resources Information Center

Gold, Joshua

2016-01-01

This conceptual paper introduces a clinical collaboration model for counselors founded in the principles of humanistic counseling and wellness. The article offers applications for client life self-assessment and the discovery of personally relevant social resources. Finally, implications of this approach for graduate training, clinical service and…

Part 1: Principles of Urban Watershed Forestry

Treesearch

Karen Cappiella; Tom Schueler; Tiffany Wright

2005-01-01

Conserving forests in a watershed? This manual introduces the emerging topic of urban watershed forestry and presents new methods for systematically measuring watershed forest cover and techniques for maintaining or increasing this cover. The audience for this manual includes the local watershed planner or forester.

Human Factors Research in Aircrew Performance and Training

DTIC Science & Technology

1986-11-01

enable performance elements to be introduced at random times. More complex decision rules were needed to provide the necessary degree of realism in... cinematic simulation in which the students experience the practical application of the principles they are taught. The exercises begin with a preflight

Holopoetry.

ERIC Educational Resources Information Center

Kac, Eduardo

1996-01-01

Discusses a new poetic language invented in 1983 based on innovative use of the holographic medium. Defines what a holopoem is and explains the fundamental concepts of holopoetics. Introduces theoretical principles that address the new readerly experience created by the holotext. Provides a descriptive list of all holopoems created to date. (PA)

Whither Headship?

ERIC Educational Resources Information Center

Male, Trevor

2006-01-01

Headship in England was radically altered in nature in 1988 by the Education Reform Act which introduced the principle of local management of schools. Despite this legislative intervention, however, the model of headship in England remained virtually unchanged, rather it was headteacher behaviour that changed. The maintained school system is still…

Casimir and Casimir-Polder forces with dissipation from first principles

NASA Astrophysics Data System (ADS)

Bordag, M.

2017-12-01

We consider Casimir-Polder and Casimir forces with finite dissipation by coupling heat baths to the dipoles introducing, this way, dissipation from first principles. We derive a representation of the free energy as an integral over real frequencies, which can be viewed as an generalization of the remarkable formula introduced by Ford et al. [Phys. Rev. Lett. 55, 2273 (1985), 10.1103/PhysRevLett.55.2273]. For instance, we obtain a nonperturbative representation for the atom-atom and atom-wall interactions. We investigate several limiting cases. From the limit T →0 we show that the third law of thermodynamics cannot be violated within the given approach, where the dissipation parameter cannot depend on temperature by construction. We conclude that the given approach is insufficient to resolve the thermodynamic puzzle connected with the Drude model when inserted into the Lifshitz formula. Further, we consider the transition to the Matsubara representation and discuss modifications of the contribution from the zeroth Matsubara frequency.

Computer-aided detection of breast lesions in DCE-MRI using region growing based on fuzzy C-means clustering and vesselness filter

NASA Astrophysics Data System (ADS)

B. Shokouhi, Shahriar; Fooladivanda, Aida; Ahmadinejad, Nasrin

2017-12-01

A computer-aided detection (CAD) system is introduced in this paper for detection of breast lesions in dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). The proposed CAD system firstly compensates motion artifacts and segments the breast region. Then, the potential lesion voxels are detected and used as the initial seed points for the seeded region-growing algorithm. A new and robust region-growing algorithm incorporating with Fuzzy C-means (FCM) clustering and vesselness filter is proposed to segment any potential lesion regions. Subsequently, the false positive detections are reduced by applying a discrimination step. This is based on 3D morphological characteristics of the potential lesion regions and kinetic features which are fed to the support vector machine (SVM) classifier. The performance of the proposed CAD system is evaluated using the free-response operating characteristic (FROC) curve. We introduce our collected dataset that includes 76 DCE-MRI studies, 63 malignant and 107 benign lesions. The prepared dataset has been used to verify the accuracy of the proposed CAD system. At 5.29 false positives per case, the CAD system accurately detects 94% of the breast lesions.

PubMed Central

Légaré, F.; Bélanger, N.; Doyon, H.

2000-01-01

PROBLEM BEING ADDRESSED: Family medicine training programs are required to teach the four principles of family medicine, two of which deal with community responsibilities. Teachers in the Family Practice Unit at the Centre hospitalier de Québec, pavillon St-François d'Assise (UMF-SFA) have developed a learning activity that introduces residents to community agencies in the area. OBJECTIVE OF PROGRAM: To introduce family medicine residents to community aspects of the principles of family medicine, to help them identify community resources in the area served by UMF-SFA, to discuss these services so that they can use them effectively, and to offer new residents an opportunity to become better acquainted with these services and with the UMF-SFA team. MAIN COMPONENTS OF PROGRAM: In early September, a half-day is set aside for a rally during which mixed teams of supervisors and residents (four to eight to a team) visit about 10 community agencies in the vicinity of UMF-SFA. Walking from place to place, the teams spend 15 to 20 minutes with staff or users of each agency. The informal tone of the rally makes it easier for residents to understand these agencies. CONCLUSION: Each year for the past 10 years, all UMF-SFA members have taken part in a rally that introduces residents to the community-based resources of family medicine. PMID:11153411

Growing Opportunities for Agriculture and Responding to Markets Act of 2011

THOMAS, 112th Congress

Sen. Casey, Robert P., Jr. [D-PA

2011-11-17

Senate - 11/17/2011 Read twice and referred to the Committee on Agriculture, Nutrition, and Forestry. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

Growing Opportunities for Agriculture and Responding to Markets Act of 2013

THOMAS, 113th Congress

Sen. Casey, Robert P., Jr. [D-PA

2013-04-09

Senate - 04/09/2013 Read twice and referred to the Committee on Agriculture, Nutrition, and Forestry. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

WASTE REDUCTION USING COMPUTER-AIDED DESIGN TOOLS

EPA Science Inventory

Growing environmental concerns have spurred considerable interest in pollution prevention. In most instances, pollution prevention involves introducing radical changes to the design of processes so that waste generation is minimized.
Process simulators can be effective tools i...

Growing Education Achievement Training Academies for Teachers and Principals Act

THOMAS, 112th Congress

Sen. Bennet, Michael F. [D-CO

2011-06-22

Senate - 06/22/2011 Read twice and referred to the Committee on Health, Education, Labor, and Pensions. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine.

PubMed

Yun, Xiao; Quarini, Giuseppe L

2017-03-13

We demonstrate a method for the study of the heat and mass transfer and of the freezing phenomena in a subcooled brine environment. Our experiment showed that, under the proper conditions, ice can be produced when water is introduced to a bath of cold brine. To make ice form, in addition to having the brine and water mix, the rate of heat transfer must bypass that of mass transfer. When water is introduced in the form of tiny droplets to the brine surface, the mode of heat and mass transfer is by diffusion. The buoyancy stops water from mixing with the brine underneath, but as the ice grows thicker, it slows down the rate of heat transfer, making ice more difficult to grow as a result. When water is introduced inside the brine in the form of a flow, a number of factors are found to influence how much ice can form. Brine temperature and concentration, which are the driving forces of heat and mass transfer, respectively, can affect the water-to-ice conversion ratio; lower bath temperatures and brine concentrations encourage more ice to form. The flow rheology, which can directly affect both the heat and mass transfer coefficients, is also a key factor. In addition, the flow rheology changes the area of contact of the flow with the bulk fluid.

Prescription drug abuse: problem, policies, and implications.

PubMed

Phillips, Janice

2013-01-01

This article provides an overview on prescription drug abuse and highlights a number of related legislative bills introduced during the 112th Congress in response to this growing epidemic. Prescription drug abuse has emerged as the nation's fastest growing drug problem. Although prescription drugs have been used effectively and appropriately for decades, deaths from prescription pain medicine in particular have reached epidemic proportions. Bills related to prescription drug abuse introduced during the 112th Congress focus on strengthening provider and consumer education, tracking and monitoring prescription drug abuse, improving data collection on drug overdose fatalities, combating fraud and abuse in Medicare and Medicaid programs, reclassifying drugs to make them more difficult to prescribe and obtain, and enforcing stricter penalties for individuals who operate scam pain clinics and sell pain pills illegitimately. This article underscores the importance of a multifaceted approach to combating prescription drug abuse and concludes with implications for nursing. Copyright © 2013. Published by Mosby, Inc.

Quantum Common Causes and Quantum Causal Models

NASA Astrophysics Data System (ADS)

Allen, John-Mark A.; Barrett, Jonathan; Horsman, Dominic C.; Lee, Ciarán M.; Spekkens, Robert W.

2017-07-01

Reichenbach's principle asserts that if two observed variables are found to be correlated, then there should be a causal explanation of these correlations. Furthermore, if the explanation is in terms of a common cause, then the conditional probability distribution over the variables given the complete common cause should factorize. The principle is generalized by the formalism of causal models, in which the causal relationships among variables constrain the form of their joint probability distribution. In the quantum case, however, the observed correlations in Bell experiments cannot be explained in the manner Reichenbach's principle would seem to demand. Motivated by this, we introduce a quantum counterpart to the principle. We demonstrate that under the assumption that quantum dynamics is fundamentally unitary, if a quantum channel with input A and outputs B and C is compatible with A being a complete common cause of B and C , then it must factorize in a particular way. Finally, we show how to generalize our quantum version of Reichenbach's principle to a formalism for quantum causal models and provide examples of how the formalism works.

The Uncertainty Principle in the Presence of Quantum Memory

NASA Astrophysics Data System (ADS)

Renes, Joseph M.; Berta, Mario; Christandl, Matthias; Colbeck, Roger; Renner, Renato

2010-03-01

One consequence of Heisenberg's uncertainty principle is that no observer can predict the outcomes of two incompatible measurements performed on a system to arbitrary precision. However, this implication is invalid if the the observer possesses a quantum memory, a distinct possibility in light of recent technological advances. Entanglement between the system and the memory is responsible for the breakdown of the uncertainty principle, as illustrated by the EPR paradox. In this work we present an improved uncertainty principle which takes this entanglement into account. By quantifying uncertainty using entropy, we show that the sum of the entropies associated with incompatible measurements must exceed a quantity which depends on the degree of incompatibility and the amount of entanglement between system and memory. Apart from its foundational significance, the uncertainty principle motivated the first proposals for quantum cryptography, though the possibility of an eavesdropper having a quantum memory rules out using the original version to argue that these proposals are secure. The uncertainty relation introduced here alleviates this problem and paves the way for its widespread use in quantum cryptography.

Separation and sorting of cells in microsystems using physical principles

NASA Astrophysics Data System (ADS)

Lee, Gi-Hun; Kim, Sung-Hwan; Ahn, Kihoon; Lee, Sang-Hoon; Park, Joong Yull

2016-01-01

In the last decade, microfabrication techniques have been combined with microfluidics and applied to cell biology. Utilizing such new techniques, various cell studies have been performed for the research of stem cells, immune cells, cancer, neurons, etc. Among the various biological applications of microtechnology-based platforms, cell separation technology has been highly regarded in biological and clinical fields for sorting different types of cells, finding circulating tumor cells (CTCs), and blood cell separation, amongst other things. Many cell separation methods have been created using various physical principles. Representatively, these include hydrodynamic, acoustic, dielectrophoretic, magnetic, optical, and filtering methods. In this review, each of these methods will be introduced, and their physical principles and sample applications described. Each physical principle has its own advantages and disadvantages. The engineers who design the systems and the biologists who use them should understand the pros and cons of each method or principle, to broaden the use of microsystems for cell separation. Continuous development of microsystems for cell separation will lead to new opportunities for diagnosing CTCs and cancer metastasis, as well as other elements in the bloodstream.

Structure of a randomly grown 2-d network.

PubMed

Ajazi, Fioralba; Napolitano, George M; Turova, Tatyana; Zaurbek, Izbassar

2015-10-01

We introduce a growing random network on a plane as a model of a growing neuronal network. The properties of the structure of the induced graph are derived. We compare our results with available data. In particular, it is shown that depending on the parameters of the model the system undergoes in time different phases of the structure. We conclude with a possible explanation of some empirical data on the connections between neurons. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

Outcome science in practice: an overview and initial experience at the Vanderbilt Spine Center.

PubMed

McGirt, Matthew J; Speroff, Theodore; Godil, Saniya Siraj; Cheng, Joseph S; Selden, Nathan R; Asher, Anthony L

2013-01-01

In terms of policy, research, quality improvement, and practice-based learning, there are essential principles--namely, quality, effectiveness, and value of care--needed to navigate changes in the current and future US health care environment. Patient-centered outcome measurement lies at the core of all 3 principles. Multiple measures of disease-specific disability, generic health-related quality of life, and preference-based health state have been introduced to quantify disease impact and define effectiveness of care. This paper reviews the basic principles of patient outcome measurement and commonly used outcome instruments. The authors provide examples of how utilization of outcome measurement tools in everyday neurosurgical practice can facilitate practice-based learning, quality improvement, and real-world comparative effectiveness research, as well as promote the value of neurosurgical care.

Nature of the Physical Observer

NASA Astrophysics Data System (ADS)

Osoroma, Drahcir S.

2010-12-01

The nature of the observer has long plagued physical science. Here we review the current status of cognitive science in the context of a cosmology of mind in an Anthropic Multiverse. The concept of an élan vital or life force has long been considered the elementary action principle driving the evolution of living-systems by theologically minded scientists and individuals. Sufficiently extending Einstein's original model of a Static Universe, to a Holographic Anthropic Multiverse (HAM), provides a context for solving this centuries old problem for introducing this type of teleological principle into Physics, Biology, Medicine and Psychology. This means the contemporary framework of biological mechanism should no longer be considered the formal philosophical basis for describing living systems and contemporary allopathic (scientific) medicine. The new noetic action principle has far reaching implications for medicine and transpersonal psychology.

Human experience and product usability: principles to assist the design of user-product interactions.

PubMed

Chamorro-Koc, Marianella; Popovic, Vesna; Emmison, Michael

2009-07-01

This paper introduces research that investigates how human experience influences people's understandings of product usability. It describes an experiment that employs visual representation of concepts to elicit participants' ideas of a product's use. Results from the experiment lead to the identification of relationships between human experience, knowledge, and context-of-use--relationships that influence designers' and users' concepts of product usability. These relationships are translated into design principles that inform the design activity with respect to the aspects of experience that trigger people's understanding of a product's use. A design tool (ECEDT) is devised to aid designers in the application of these principles. This tool is then trialled in the context of a design task in order to verify applicability of the findings.

Research to Assembly Scheme for Satellite Deck Based on Robot Flexibility Control Principle

NASA Astrophysics Data System (ADS)

Guo, Tao; Hu, Ruiqin; Xiao, Zhengyi; Zhao, Jingjing; Fang, Zhikai

2018-03-01

Deck assembly is critical quality control point in final satellite assembly process, and cable extrusion and structure collision problems in assembly process will affect development quality and progress of satellite directly. Aimed at problems existing in deck assembly process, assembly project scheme for satellite deck based on robot flexibility control principle is proposed in this paper. Scheme is introduced firstly; secondly, key technologies on end force perception and flexible docking control in the scheme are studied; then, implementation process of assembly scheme for satellite deck is described in detail; finally, actual application case of assembly scheme is given. Result shows that compared with traditional assembly scheme, assembly scheme for satellite deck based on robot flexibility control principle has obvious advantages in work efficiency, reliability and universality aspects etc.

On the maximum principle for complete second-order elliptic operators in general domains

NASA Astrophysics Data System (ADS)

Vitolo, Antonio

This paper is concerned with the maximum principle for second-order linear elliptic equations in a wide generality. By means of a geometric condition previously stressed by Berestycki-Nirenberg-Varadhan, Cabré was very able to improve the classical ABP estimate obtaining the maximum principle also in unbounded domains, such as infinite strips and open connected cones with closure different from the whole space. Now we introduce a new geometric condition that extends the result to a more general class of domains including the complements of hypersurfaces, as for instance the cut plane. The methods developed here allow us to deal with complete second-order equations, where the admissible first-order term, forced to be zero in a preceding result with Cafagna, depends on the geometry of the domain.

Assessing the biophysical naturalness of grassland in eastern North Dakota with hyperspectral imagery

NASA Astrophysics Data System (ADS)

Zhou, Qiang

Over the past two decades, non-native species within grassland communities have quickly developed due to human migration and commerce. Invasive species like Smooth Brome grass (Bromus inermis) and Kentucky Blue Grass (Poa pratensis), seriously threaten conservation of native grasslands. This study aims to discriminate between native grasslands and planted hayfields and conservation areas dominated by introduced grasses using hyperspectral imagery. Hyperspectral imageries from the Hyperion sensor on EO-1 were acquired in late spring and late summer on 2009 and 2010. Field spectra for widely distributed species as well as smooth brome grass and Kentucky blue grass were collected from the study sites throughout the growing season. Imagery was processed with an unmixing algorithm to estimate fractional cover of green and dry vegetation and bare soil. As the spectrum is significantly different through growing season, spectral libraries for the most common species are then built for both the early growing season and late growing season. After testing multiple methods, the Adaptive Coherence Estimator (ACE) was used for spectral matching analysis between the imagery and spectral libraries. Due in part to spectral similarity among key species, the results of spectral matching analysis were not definitive. Additional indexes, "Level of Dominance" and "Band variance", were calculated to measure the predominance of spectral signatures in any area. A Texture co-occurrence analysis was also performed on both "Level of Dominance" and "Band variance" indexes to extract spatial characteristics. The results suggest that compared with disturbed area, native prairie tend to have generally lower "Level of Dominance" and "Band variance" as well as lower spatial dissimilarity. A final decision tree model was created to predict presence of native or introduced grassland. The model was more effective for identification of Mixed Native Grassland than for grassland dominated by a single species. The discrimination of native and introduced grassland was limited by the similarity of spectral signatures between forb-dominated native grasslands and brome-grass stands. However, saline native grasslands were distinguishable from brome grass.

Beckham as physicist?

NASA Astrophysics Data System (ADS)

Ireson, Gren

2001-01-01

It is hard to think of a medium that does not use football or soccer as a means of promotion. It is also hard to think of a student who has not heard of David Beckham. If football captures the interest of students it can be used to teach physics; in this case a Beckham free-kick can be used to introduce concepts such as drag, the Bernoulli principle, Reynolds number and the Magnus effect, by asking the simple question: How does he curve the ball so much? Much basic mechanics can also be introduced along the way.

Surface Plasmon Resonance Sensors on Raman and Fluorescence Spectroscopy

PubMed Central

Wang, Jiangcai; Lin, Weihua; Cao, En; Xu, Xuefeng; Liang, Wenjie; Zhang, Xiaofang

2017-01-01

The performance of chemical reactions has been enhanced immensely with surface plasmon resonance (SPR)-based sensors. In this review, the principle and application of SPR sensors are introduced and summarized thoroughly. We introduce the mechanism of the SPR sensors and present a thorough summary about the optical design, including the substrate and excitation modes of the surface plasmons. Additionally, the applications based on SPR sensors are described by the Raman and fluorescence spectroscopy in plasmon-driven surface catalytic reactions and the measurement of refractive index sensing, especially. PMID:29212139

Introducing AC inductive reactance with a power tool

NASA Astrophysics Data System (ADS)

Bryant, Wesley; Baker, Blane

2016-09-01

The concept of reactance in AC electrical circuits is often non-intuitive and difficult for students to grasp. In order to address this lack of conceptual understanding, classroom exercises compare the predicted resistance of a power tool, based on electrical specifications, to measured resistance. Once students discover that measured resistance is smaller than expected, they are asked to explain these observations using previously studied principles of magnetic induction. Exercises also introduce the notion of inductive reactance and impedance in AC circuits and, ultimately, determine self-inductance of the motor windings within the power tool.

Research on Design Information Management System for Leather Goods

NASA Astrophysics Data System (ADS)

Lu, Lei; Peng, Wen-li

The idea of setting up a design information management system of leather goods was put forward to solve the problems existed in current information management of leather goods. Working principles of the design information management system for leather goods were analyzed in detail. Firstly, the acquiring approach of design information of leather goods was introduced. Secondly, the processing methods of design information were introduced. Thirdly, the management of design information in database was studied. Finally, the application of the system was discussed by taking the shoes products as an example.

Pluripotent stem cell-derived organoids: using principles of developmental biology to grow human tissues in a dish.

PubMed

McCauley, Heather A; Wells, James M

2017-03-15

Pluripotent stem cell (PSC)-derived organoids are miniature, three-dimensional human tissues generated by the application of developmental biological principles to PSCs in vitro The approach to generate organoids uses a combination of directed differentiation, morphogenetic processes, and the intrinsically driven self-assembly of cells that mimics organogenesis in the developing embryo. The resulting organoids have remarkable cell type complexity, architecture and function similar to their in vivo counterparts. In the past five years, human PSC-derived organoids with components of all three germ layers have been generated, resulting in the establishment of a new human model system. Here, and in the accompanying poster, we provide an overview of how principles of developmental biology have been essential for generating human organoids in vitro , and how organoids are now being used as a primary research tool to investigate human developmental biology. © 2017. Published by The Company of Biologists Ltd.

Measuring 'virtue' in medicine.

PubMed

Kotzee, Ben; Ignatowicz, Agnieszka

2016-06-01

Virtue-approaches to medical ethics are becoming ever more influential. Virtue theorists advocate redefining right or good action in medicine in terms of the character of the doctor performing the action (rather than adherence to rules or principles). In medical education, too, calls are growing to reconceive medical education as a form of character formation (rather than instruction in rules or principles). Empirical studies of doctors' ethics from a virtue-perspective, however, are few and far between. In this respect, theoretical and empirical study of medical ethics are out of alignment. In this paper, we survey the empirical study of medical ethics and find that most studies of doctors' ethics are rules- or principles-based and not virtue-based. We outline the challenges that exist for studying medical ethics empirically from a virtue-based perspective and canvas the runners and riders in the effort to find virtue-based assessments of medical ethics.

Double Standards and First Principles: Framing Teaching Assistant Support for Pupils with Special Educational Needs

ERIC Educational Resources Information Center

Webster, Rob; Blatchford, Peter; Bassett, Paul; Brown, Penelope; Martin, Clare; Russell, Anthony

2010-01-01

Teaching assistants (TAs) are part of a growing international trend toward paraprofessionals working in public services. There has been controversy over TAs' deployment and appropriate role when supporting the learning of pupils with special educational needs (SEN) in mainstream schools. Such debates have been transformed by findings from a large…

Ethical Principles as a Guide in Implementing Policies for the Management of Food Allergies in Schools

ERIC Educational Resources Information Center

Behrmann, Jason

2010-01-01

Food allergy in children is a growing public health problem that carries a significant risk of anaphylaxis such that schools and child care facilities have enacted emergency preparedness policies for anaphylaxis and methods to prevent the inadvertent consumption of allergens. However, studies indicate that many facilities are poorly prepared to…

A prototype harvester for short-rotation plantations

Treesearch

James A. Mattson; Michael A. Wehr

1983-01-01

A promising approach to increasing the supply of wood fiber for pulp and energy is short-rotation intensively cultured (SRIC) forestry. To apply the principles of agriculture to the growing of wood fiber, designers of harvesting equipment must consider a unique set of operating criteria. This paper summarizes the design criteria relevant to the SRIC concept and...

Building an Adult Workplace Literacy Program for Spanish-Speaking Carpenters

ERIC Educational Resources Information Center

Case, Rod E.; Ainsworth, John; Emerson, Rick

2004-01-01

This article provides a field-based account of how to develop and implement an adult workplace literacy program for English as a Second Language (ESL) students based upon the principles of a social practices definition of literacy. The purpose of the program is to provide basic literacy instruction for the growing population of Spanish-speaking…

3-PG simulations of young ponderosa pine plantations under varied management intensity: why do they grow so differently?

Treesearch

Liang Wei; Marshall John; Jianwei Zhang; Hang Zhou; Robert Powers

2014-01-01

Models can be powerful tools for estimating forest productivity and guiding forest management, but their credibility and complexity are often an issue for forest managers. We parameterized a process-based forest growth model, 3-PG (Physiological Principles Predicting Growth), to simulate growth of ponderosa pine (Pinus ponderosa) plantations in...

The Impact of Nontraditional Classroom Assessment on Retention of Information in an Introductory Psychology Course

ERIC Educational Resources Information Center

Gordon, M. Cristina M.

2010-01-01

In 1989 the North Central Higher Learning Commission joined a growing movement to improve learning and classroom assessment. The movement called for a more inclusive type of assessment that involves tasks other that learning for testing. The Association of American Colleges and Universities agreed and proposed new Principles of Excellence…

When Mergers Fail: A Case Study on the Critical Role of External Stakeholders in Merger Initiatives

ERIC Educational Resources Information Center

Stensaker, Bjørn; Persson, Mats; Pinheiro, Rómulo

2016-01-01

One can, in principle, identify numerous arguments for mergers in higher education (HE), including efficiency, diversity, quality, and regional needs. This diversity can be explained by the growing societal interest in the sector, not least concerning the contributions from HE to society at large. However, research on merger processes has tended…

Recovering Knowledge for Science Education Research: Exploring the "Icarus Effect" in Student Work

ERIC Educational Resources Information Center

Georgiou, Helen; Maton, Karl; Sharma, Manjula

2014-01-01

Science education research has built a strong body of work on students' understandings but largely overlooked the nature of science knowledge itself. Legitimation Code Theory (LCT), a rapidly growing approach to education, offers a way of analyzing the organizing principles of knowledge practices and their effects on science education. This…

Commander’s Handbook for Unit Leader Development

DTIC Science & Technology

2007-07-02

Transforming Organizations: Growing Leaders for Tomorrow. Mahwah, NJ: Lawrence Erlbaum Associates. Kolb , D. (1984). Experiential learning : Experiences...development tools, job aides, or other on-the-job leader development interventions. Implicitly, the handbook employs adult learning theory to engage...most effective and efficient methods of leader development for a unit environment. Principles of adult learning theory were then applied to

Meeting the Growing Demand for Sustainability-Focused Management Education: A Case Study of a PRME Academic Institution

ERIC Educational Resources Information Center

Young, Suzanne; Nagpal, Swati

2013-01-01

The current business landscape has created the impetus to develop management graduates with capabilities that foster responsible leadership and sustainability. Through the lens of Gitsham's 3C Model (Complexity, Context and Connection) of graduate capabilities, this paper discusses the experience of implementing the United Nations Principles for…

Rhetorical Analysis of Teaching Process in Selected English Classes: Methods and Implications.

ERIC Educational Resources Information Center

Lindley, Daniel Allen, Jr.

This study related selected principles of rhetorical analysis to teaching as it actually occurs in the classroom. The Aristotelian definition of rhetoric as the means of discovering all the available means of persuasion is central to teaching, in that the entire endeavor of education rests upon the premise that children, as they grow, need and…

"Minecraft," Teachers, Parents, and Learning: What They Need to Know and Understand

ERIC Educational Resources Information Center

Ellison, Tisha Lewis; Evans, Jessica N.

2016-01-01

This article explores six effective principles for teachers to use to understand and apply "Minecraft" in today's classrooms. Video games have become one of the fastest growing forms of media for youth and adult consumers. "Minecraft," a multiplayer online game (MOG), is one of the most popular video games to date. By allowing…

Garbage Pollution Has a Solution: The Sanitary Landfill.

ERIC Educational Resources Information Center

Andresen, Ruth

The principle ways in which communities solve the growing problems of solid waste disposal are studied in this set of audio-visual materials prepared for grades 6-12. A 58-frame colored filmstrip, cassette tape narration, and teacher's guide focus upon the Monterey Bay area of California. Topics examined range from types of disposal sites, the…

Fixed-Tuition Pricing: A Solution that May Be Worse than the Problem

ERIC Educational Resources Information Center

Morphew, Christopher C.

2007-01-01

Fixed-tuition plans, which vary in specifics from institution to institution, rely on a common principle: Students pay the same annual tuition costs over a pre-determined length of time, ostensibly the time required to earn an undergraduate degree. Students, parents, and policymakers are demonstrating growing interest in such plans. At face value,…

Thermophilic Beta-Glycosidase

NASA Technical Reports Server (NTRS)

Grogan, Dennis W.

1992-01-01

Report describes identification of thermophilic Beta-glycosidase enzyme from isolate of Sulfolobus solfataricus, sulfur-metabolizing archaebacteria growing aerobically and heterotrophically to relatively high cell yields. Enzyme useful in enzymatic conversion of cellulose to D-glucose and important in recycling of biomass. Used for removal of lactose from milk products. Offers promise as model substance for elucidation of basic principles of structural stabilization of proteins.

A practical approach for translating climate change adaptation principles into forest management actions

Treesearch

Maria K. Janowiak; Christopher W. Swanston; Linda M. Nagel; Leslie A. Brandt; Patricia R. Butler; Stephen D. Handler; P. Danielle Shannon; Louis R. Iverson; Stephen N. Matthews; Anantha Prasad; Matthew P. Peters

2014-01-01

There is an ever-growing body of literature on forest management strategies for climate change adaptation; however, few frameworks have been presented for integrating these strategies with the real-world challenges of forest management. We have developed a structured approach for translating broad adaptation concepts into specific management actions and silvicultural...

Risk Assessment of Sexual Offenders for Extended Supervision Orders in New Zealand: Basic Principles and Current Practice

ERIC Educational Resources Information Center

Vess, James

2009-01-01

A growing number of jurisdictions in North America, the United Kingdom, and Australasia have enacted legislation allowing for special sentencing, civil commitment, and community supervision options for high risk sexual offenders. In New Zealand, one example of this concern for public protection is the Parole (Extended Supervision) Amendment Act…

Noah-MP-Crop: Introducing dynamic crop growth in the Noah-MP land surface model

NASA Astrophysics Data System (ADS)

Liu, Xing; Chen, Fei; Barlage, Michael; Zhou, Guangsheng; Niyogi, Dev

2016-12-01

Croplands are important in land-atmosphere interactions and in the modification of local and regional weather and climate; however, they are poorly represented in the current version of the coupled Weather Research and Forecasting/Noah with multiparameterization (Noah-MP) land surface modeling system. This study introduced dynamic corn (Zea mays) and soybean (Glycine max) growth simulations and field management (e.g., planting date) into Noah-MP and evaluated the enhanced model (Noah-MP-Crop) at field scales using crop biomass data sets, surface heat fluxes, and soil moisture observations. Compared to the generic dynamic vegetation and prescribed-leaf area index (LAI)-driven methods in Noah-MP, the Noah-MP-Crop showed improved performance in simulating leaf area index (LAI) and crop biomass. This model is able to capture the seasonal and annual variability of LAI and to differentiate corn and soybean in peak values of LAI as well as the length of growing seasons. Improved simulations of crop phenology in Noah-MP-Crop led to better surface heat flux simulations, especially in the early period of growing season where current Noah-MP significantly overestimated LAI. The addition of crop yields as model outputs expand the application of Noah-MP-Crop to regional agriculture studies. There are limitations in the use of current growing degree days (GDD) criteria to predict growth stages, and it is necessary to develop a new method that combines GDD with other environmental factors, to more accurately define crop growth stages. The capability introduced in Noah-MP allows further crop-related studies and development.

Chemistry in Microfluidic Channels

ERIC Educational Resources Information Center

Chia, Matthew C.; Sweeney, Christina M.; Odom, Teri W.

2011-01-01

General chemistry introduces principles such as acid-base chemistry, mixing, and precipitation that are usually demonstrated in bulk solutions. In this laboratory experiment, we describe how chemical reactions can be performed in a microfluidic channel to show advanced concepts such as laminar fluid flow and controlled precipitation. Three sets of…

Introducing Psychiatric Care into Nursing Homes.

ERIC Educational Resources Information Center

Sakauye, Kenneth M.; Camp, Cameron J.

1992-01-01

Consultation-liaison psychiatry program in teaching nursing home helped implement six guiding principles, including make patient human to the staff; assume no behavior is random; look for depression or psychosis as source of problems; reduce medications and medication doses; create more homelike environment; and use conditions in which learning…

Quality Management for Schools.

ERIC Educational Resources Information Center

Mulligan, Dorothy

1992-01-01

W. Edwards Deming introduced management principles that helped Japan become a world economic power. Virginia is attempting to adapt these techniques to education with a grant that provides training and support for school personnel in several school districts. Describes a quality management program at Christa McAuliffe Elementary School that has…

Virtual Immunology: Software for Teaching Basic Immunology

ERIC Educational Resources Information Center

Berçot, Filipe Faria; Fidalgo-Neto, Antônio Augusto; Lopes, Renato Matos; Faggioni, Thais; Alves, Luiz Anastácio

2013-01-01

As immunology continues to evolve, many educational methods have found difficulty in conveying the degree of complexity inherent in its basic principles. Today, the teaching-learning process in such areas has been improved with tools such as educational software. This article introduces "Virtual Immunology," a software program available…

Promoting Retention through the Implementation of Integrated Multicultural Instructional Design

ERIC Educational Resources Information Center

Higbee, Jeanne L.; Goff, Emily; Schultz, Jennifer L.

2013-01-01

This article introduces the guiding principles of integrated multicultural instructional design (IMID), a new pedagogical model created to promote retention by addressing multicultural perspectives and social justice issues across the curriculum. To illustrate the model, specific strategies for implementing IMID in a content-based,…

The Introduction of Agility into Albania.

ERIC Educational Resources Information Center

Smith-Stevens, Eileen J.; Shkurti, Drita

1998-01-01

Describes a plan to introduce and achieve a national awareness of agility (and easy entry into the world market) for Albania through the relatively stable higher-education order. Agility's four strategic principles are enriching the customer, cooperating to enhance competitiveness, organizing to master change and uncertainty, and leveraging the…

Children in Contemporary Society: Child Ecology.

ERIC Educational Resources Information Center

Frank, Mary, Ed.

This collection of short articles focuses on various dimensions of childhood ecology. Section I introduces a conceptual framework for the study of childhood ecology and poses 4 methodological principles for human development specialists. Four ecological subsystems are identified and discussed briefly. Section II discusses the family microsystem in…

A Photoelectrochemical Solar Cell: An Undergraduate Experiment.

ERIC Educational Resources Information Center

Boudreau, Sharon M.; And Others

1983-01-01

Preparation and testing of a cadmium selenide photoelectrical solar cell was introduced into an environmental chemistry course to illustrate solid state semiconductor and electrochemical principles. Background information, procedures, and results are provided for the experiment which can be accomplished in a three- to four-hour laboratory session…

Defending the Environment at the Department of Defense: Using Environmentally Preferable Purchasing Procedures to Maintain the Pentagon and Other DOD Facilities

EPA Pesticide Factsheets

To demonstrate the ways environmentally preferable purchasing principles are currently being applied, EPA is documenting pilot procurement projects. This case describes efforts by the U.S. DOD to introduce these practices to the Pentagon.

The Froebelian Kindergarten as an International Movement.

ERIC Educational Resources Information Center

Hewes, Dorothy W.

This paper presents an overview of the educational principles of Friedrich Froebel and indicates how the Froebelian approach was introduced into Israel. The modern aspects of Froebel's ideas are emphasized as well as scientistic distortions in their implementation. Recommendations to practitioners for improving early childhood education are…

Psychometrics: An Introduction

ERIC Educational Resources Information Center

Furr, Mike; Bacharach, Verne R.

2007-01-01

The authors center their presentation of material around a conceptual understanding of psychometric issues, such as validity and reliability, and on purpose rather than procedure, the "why" rather than the "how to." Their goal is to introduce psychometric principles at a level that is deeper and more focused than found in introductory…

Understanding Facilitation: Theory and Principles.

ERIC Educational Resources Information Center

Hogan, Christine

This book introduces newcomers to the concept of facilitation, and it presents a critical analysis of established and current theory on facilitation for existing practitioners. The following are among the topics discussed: (1) emergence of the field of facilitation; (2) development of facilitation in management; (3) development of facilitation in…

Principles and application of transgenic technology in marine organisms

USDA-ARS?s Scientific Manuscript database

Marine organisms into which a foreign gene or noncoding DNA fragment is artificially introduced and stably integrated in their genomes are termed transgenic marine organisms. Since the first report in 1985, a wide range of transgenic fish and marine bivalve mollusks have been produced by microinjec...

Design of a Dynamic Undergraduate Green Chemistry Course

ERIC Educational Resources Information Center

Kennedy, Sarah A.

2016-01-01

The green chemistry course taught at Westminster College (PA) incorporates nontraditional teaching techniques and texts to educate future chemists about the importance of using green chemistry principles. The course is designed to introduce green chemistry concepts and demonstrate their inherent necessity by discussing historical missteps by the…

Agile Learning: Sprinting through the Semester

ERIC Educational Resources Information Center

Lang, Guido

2017-01-01

This paper introduces agile learning, a novel pedagogical approach that applies the processes and principles of agile software development to the context of learning. Agile learning is characterized by short project cycles, called sprints, in which a usable deliverable is fully planned, designed, built, tested, reviewed, and launched. An…

Catalytic Hydrogenation of Organic Compounds without H2 Supply: An Electrochemical System

ERIC Educational Resources Information Center

Navarro, Daniela Maria do Amaral Ferraz; Navarro, Marcelo

2004-01-01

An experiment developed for an undergraduate organic chemistry laboratory course that can be used to introduce the catalytic hydrogenation reaction, catalysis electrochemical principles and gas chromatography is presented. The organic compounds hydrogenated by the electrocatalytic hydrogenation (ECH) process were styrene, benzaldehyde and…

Marketing Student Services in a Community College.

ERIC Educational Resources Information Center

Culp, Marguerite McGann

This paper applies business marketing principles to college student services, introduces a model for measuring the life cycle of a service, outlines strategic planning procedures, and describes the implementation of a comprehensive student service marketing program at Seminole Community College in Florida. An overview of marketing defines…

The Evolution of Learning Mechanisms.

ERIC Educational Resources Information Center

Garcia, John; Garcia y Robertson, Rodrigo

This paper introduces seven principles of learning, enduring over the last five centuries of psychological thought, to discuss the evolution of the "Biophyche" (the brain in action) in the development of humans and other large organisms. It describes the conditioning theories of Darwin, Pavlov, and Thorndike and critically reviews the…

[Ion mobility spectrometer (IMS): a novel online monitor of trace volatile organic compounds].

PubMed

Li, Fang; Xie, Zhi-yong; Schmidt, H; Sielemann, S; Baumbach, J I

2002-12-01

The principle, character and developments of the instrument of ion mobility spectrometry are introduced, the applications of IMS to chemical warfare agents, explosives, drugs, environments monitoring and on-site industrial sensing are discussed, and some work on IMS in ISAS is represented.

Water System Adaptation To Hydrological Changes: Module 12, Models and Tools for Stormwater and Wastewater System Adaptation

EPA Science Inventory

This course will introduce students to the fundamental principles of water system adaptation to hydrological changes, with emphasis on data analysis and interpretation, technical planning, and computational modeling. Starting with real-world scenarios and adaptation needs, the co...

A Field Exercise in Fluvial Sediment Transport.

ERIC Educational Resources Information Center

Tharp, Thomas M.

1983-01-01

Describes an investigation which introduces the mathematical principles of stream hydraulics and fluvial sediment in a practical context. The investigation has four stages: defining hydrology of the stream; defining channel hydraulics in a study reach; measuring grain size; and calculating transportable grain size and comparing measure stream-bed…

Picasso, Car Classics, and the Engineers.

ERIC Educational Resources Information Center

Wosk, Julie H.

1982-01-01

Describes a college course which introduces engineering and business students to abstract art. Students study the relationships between abstract styles in painting and abstract styles in twentieth-century architecture and industrial design. The relevance of abstract design principles is shown by referring students to "Car and Driver"…

Snapshots of Informed Learning: LIS and Beyond

ERIC Educational Resources Information Center

Hughes, Hilary; Bruce, Christine

2013-01-01

Responding to the need for innovative LIS curriculum and pedagogy, grounded in both information and learning theory, this paper introduces the theory and practice of "informed learning" [3]. After explaining how informed learning originated within the LIS discipline we outline the principles and characteristics of informed learning. Then…

Querying Proofs (Work in Progress)

NASA Technical Reports Server (NTRS)

Aspinall, David; Denney, Ewen; Lueth, Christoph

2011-01-01

We motivate and introduce the basis for a query language designed for inspecting electronic representations of proofs. We argue that there is much to learn from large proofs beyond their validity, and that a dedicated query language can provide a principled way of implementing a family of useful operations.

Queering Participatory Design Research

ERIC Educational Resources Information Center

McWilliams, Jacob

2016-01-01

This article offers a way forward for educators and researchers interested in drawing on the principles of "queer theory" to inform participatory design. In this article, I aim to achieve two related goals: To introduce new concepts within a critical conceptual practice of questioning and challenging the "heterosexual matrix"…

Effects of Introduced and Indigenous Viruses on Native Plants: Exploring Their Disease Causing Potential at the Agro-Ecological Interface

PubMed Central

Vincent, Stuart J.; Coutts, Brenda A.; Jones, Roger A. C.

2014-01-01

The ever increasing movement of viruses around the world poses a major threat to plants growing in cultivated and natural ecosystems. Both generalist and specialist viruses move via trade in plants and plant products. Their potential to damage cultivated plants is well understood, but little attention has been given to the threat such viruses pose to plant biodiversity. To address this, we studied their impact, and that of indigenous viruses, on native plants from a global biodiversity hot spot in an isolated region where agriculture is very recent (<185 years), making it possible to distinguish between introduced and indigenous viruses readily. To establish their potential to cause severe or mild systemic symptoms in different native plant species, we used introduced generalist and specialist viruses, and indigenous viruses, to inoculate plants of 15 native species belonging to eight families. We also measured resulting losses in biomass and reproductive ability for some host–virus combinations. In addition, we sampled native plants growing over a wide area to increase knowledge of natural infection with introduced viruses. The results suggest that generalist introduced viruses and indigenous viruses from other hosts pose a greater potential threat than introduced specialist viruses to populations of native plants encountered for the first time. Some introduced generalist viruses infected plants in more families than others and so pose a greater potential threat to biodiversity. The indigenous viruses tested were often surprisingly virulent when they infected native plant species they were not adapted to. These results are relevant to managing virus disease in new encounter scenarios at the agro-ecological interface between managed and natural vegetation, and within other disturbed natural vegetation situations. They are also relevant for establishing conservation policies for endangered plant species and avoiding spread of damaging viruses to undisturbed natural vegetation beyond the agro-ecological interface. PMID:24621926

Quantum Bath Refrigeration towards Absolute Zero: Challenging the Unattainability Principle

NASA Astrophysics Data System (ADS)

Kolář, M.; Gelbwaser-Klimovsky, D.; Alicki, R.; Kurizki, G.

2012-08-01

A minimal model of a quantum refrigerator, i.e., a periodically phase-flipped two-level system permanently coupled to a finite-capacity bath (cold bath) and an infinite heat dump (hot bath), is introduced and used to investigate the cooling of the cold bath towards absolute zero (T=0). Remarkably, the temperature scaling of the cold-bath cooling rate reveals that it does not vanish as T→0 for certain realistic quantized baths, e.g., phonons in strongly disordered media (fractons) or quantized spin waves in ferromagnets (magnons). This result challenges Nernst’s third-law formulation known as the unattainability principle.

In search of a metatheory for cognitive development (or, Piaget is dead and I don't feel so good myself).

PubMed

Bjorklund, D F

1997-02-01

With the waning of influence of Piaget's theory and the shortcomings of information-processing perspectives of cognitive growth, cognitive developmentalists lack a common set of broad, overarching principles and assumptions--a metatheory--to guide their research. Developmental biology is suggested as metatheory for cognitive development. Although it is important for developmentalists to understand proximal biological causes (e.g., brain development), most important for such a metatheory is an evolutionary perspective. Some basic principles of evolutionary psychology are introduced, and examples of contemporary research and theory consistent with these ideas are provided.

Variable focus photographic lens without mechanical movements

NASA Astrophysics Data System (ADS)

Chen, Jiabi; Peng, Runling; Zhuang, Songlin

2007-09-01

A novel design of a zoom lens system without motorized movements is proposed. The lens system consists of a fixed lens and two double-liquid variable-focus lenses. The liquid lenses, made out of two immiscible liquids, are based on the principle of electrowetting: an effect controlling the wetting properties of a liquid on a solid by modifying the applied voltage at the solid-liquid interface. The structure and principle of the lens system are introduced in this paper. And detailed calculations and simulation examples are presented to predict how two liquid lenses are related to meet the basic requirements of zoom lenses.

Design of a zoom lens without motorized optical elements

NASA Astrophysics Data System (ADS)

Peng, Runling; Chen, Jiabi; Zhu, Cheng; Zhuang, Songlin

2007-05-01

A novel design of a zoom lens system without motorized movements is proposed. The lens system consists of a fixed lens and two double-liquid variable-focus lenses. The liquid lenses, made out of two immiscible liquids, are based on the principle of electrowetting: an effect controlling the wetting properties of a liquid on a solid by modifying the applied voltage at the solid-liquid interface. The structure and principle of the lens system are introduced in this paper. Detailed calculations and simulation examples are presented to show that this zoom lens system appears viable as the next-generation zoom lens.

Design of a zoom lens without motorized optical elements.

PubMed

Peng, Runling; Chen, Jiabi; Zhu, Cheng; Zhuang, Songlin

2007-05-28

A novel design of a zoom lens system without motorized movements is proposed. The lens system consists of a fixed lens and two double-liquid variable-focus lenses. The liquid lenses, made out of two immiscible liquids, are based on the principle of electrowetting: an effect controlling the wetting properties of a liquid on a solid by modifying the applied voltage at the solid-liquid interface. The structure and principle of the lens system are introduced in this paper. Detailed calculations and simulation examples are presented to show that this zoom lens system appears viable as the next-generation zoom lens.

Entropy and equilibrium via games of complexity

NASA Astrophysics Data System (ADS)

Topsøe, Flemming

2004-09-01

It is suggested that thermodynamical equilibrium equals game theoretical equilibrium. Aspects of this thesis are discussed. The philosophy is consistent with maximum entropy thinking of Jaynes, but goes one step deeper by deriving the maximum entropy principle from an underlying game theoretical principle. The games introduced are based on measures of complexity. Entropy is viewed as minimal complexity. It is demonstrated that Tsallis entropy ( q-entropy) and Kaniadakis entropy ( κ-entropy) can be obtained in this way, based on suitable complexity measures. A certain unifying effect is obtained by embedding these measures in a two-parameter family of entropy functions.

Towards an emergent model of solitonic particles from non-trivial vacuum structure

NASA Astrophysics Data System (ADS)

Gillard, Adam B.; Gresnigt, Niels G.

2017-12-01

We motivate and introduce what we refer to as the principles of Lie-stability and Hopf-stability and see what the physical theories must look like. Lie-stability is needed on the classical side and Hopf-stability is needed on the quantum side. We implement these two principles together with Lie-deformations consistent with basic constraints on the classical kinematical variables to arrive at the form of a theory that identifies standard model fermions with quantum solitonic trefoil knotted flux tubes which emerge from a flux tube vacuum network. Moreover, twisted unknot fluxtubes form natural dark matter candidates

If Maxwell had worked between Ampère and Faraday: An historical fable with a pedagogical moral

NASA Astrophysics Data System (ADS)

Jammer, Max; Stachel, John

1980-01-01

If one drops the Faraday induction term from Maxwell's equations, they become exactly Galilei invariant. This suggests that if Maxwell had worked between Ampère and Faraday, he could have developed this Galilei-invariant electromagnetic theory so that Faraday's discovery would have confronted physicists with the dilemma: give up the Galileian relativity principle for electromagnetism (ether hypothesis), or modify it (special relativity). This suggests a new pedagogical approach to electromagnetic theory, in which the displacement current and the Galileian relativity principle are introduced before the induction term is discussed.

Laplace-Runge-Lenz vector for a light ray trajectory in r-1 media

NASA Astrophysics Data System (ADS)

Rangwala, Abbas A.; Kulkarni, Vaman H.; Rindani, Amishi A.

2001-07-01

Using the variational formulation of the Fermat principle and exploiting its analogy with the Hamilton principle of mechanics, we introduce an optical Lagrangian to show that the Euler-Lagrange equations result in the ray equation of optics. For a medium with refractive index given by n2(r)=C+2k/r we show that there exists an additional conservation law as in the Kepler problem of mechanics giving the Laplace-Runge-Lenz vector. We consider its two applications: (a) bending of a light ray near a massive star and (b) its bending in a nonmagnetized thermal plasma.

On the Support of Minimizers of Causal Variational Principles

NASA Astrophysics Data System (ADS)

Finster, Felix; Schiefeneder, Daniela

2013-11-01

A class of causal variational principles on a compact manifold is introduced and analyzed both numerically and analytically. It is proved under general assumptions that the support of a minimizing measure is either completely timelike, or it is singular in the sense that its interior is empty. In the examples of the circle, the sphere and certain flag manifolds, the general results are supplemented by a more detailed and explicit analysis of the minimizers. On the sphere, we get a connection to packing problems and the Tammes distribution. Moreover, the minimal action is estimated from above and below.

Quantum bath refrigeration towards absolute zero: challenging the unattainability principle.

PubMed

Kolář, M; Gelbwaser-Klimovsky, D; Alicki, R; Kurizki, G

2012-08-31

A minimal model of a quantum refrigerator, i.e., a periodically phase-flipped two-level system permanently coupled to a finite-capacity bath (cold bath) and an infinite heat dump (hot bath), is introduced and used to investigate the cooling of the cold bath towards absolute zero (T=0). Remarkably, the temperature scaling of the cold-bath cooling rate reveals that it does not vanish as T→0 for certain realistic quantized baths, e.g., phonons in strongly disordered media (fractons) or quantized spin waves in ferromagnets (magnons). This result challenges Nernst's third-law formulation known as the unattainability principle.

Basic principles of Hasse diagram technique in chemistry.

PubMed

Brüggemann, Rainer; Voigt, Kristina

2008-11-01

Principles of partial order applied to ranking are explained. The Hasse diagram technique (HDT) is the application of partial order theory based on a data matrix. In this paper, HDT is introduced in a stepwise procedure, and some elementary theorems are exemplified. The focus is to show how the multivariate character of a data matrix is realized by HDT and in which cases one should apply other mathematical or statistical methods. Many simple examples illustrate the basic theoretical ideas. Finally, it is shown that HDT is a useful alternative for the evaluation of antifouling agents, which was originally performed by amoeba diagrams.

Extraordinary Magnetic Field Enhancement with Metallic Nanowire: Role of Surface Impedance in Babinet's Principle for Sub-Skin-Depth Regime

NASA Astrophysics Data System (ADS)

Koo, Sukmo; Kumar, M. Sathish; Shin, Jonghwa; Kim, Daisik; Park, Namkyoo

2009-12-01

We propose and analyze the “complementary” structure of a metallic nanogap, namely, the metallic nanowire for magnetic field enhancement. A huge enhancement of the field up to a factor of 300 was achieved. Introducing the surface impedance concept, we also develop and numerically confirm a new analytic theory which successfully predicts the field enhancement factors for metal nanostructures. Compared to the predictions of the classical Babinet principle applied to a nanogap, an order of magnitude difference in the field enhancement factor was observed for the sub-skin-depth regime nanowire.

Terahertz detection using double quantum well devices

NASA Astrophysics Data System (ADS)

Khodier, Majid; Christodoulou, Christos G.; Simmons, Jerry A.

2001-12-01

This paper discusses the principle of operation of an electrically tunable THz detector, working around 2.54 THz, integrated with a bowtie antenna. The detection is based on the idea of photon-assisted tunneling (PAT) in a double quantum well (DQW) device. The bowtie antenna is used to collect the THz radiation and feed it to the detector for processing. The Bowtie antenna geometry is integrated with the DQW device to achieve broadband characteristic, easy design, and compatibility with the detector fabrication process. The principle of operation of the detector is introduced first. Then, results of different bowtie antenna layouts are presented and discussed.

[Artificial cycle therapy of acupuncture and moxibustion for irregular menstruation].

PubMed

Wu, Jie; Yang, Lijie; Chen, Yajie; Li, Qing; Chen, Lin

2015-03-01

Through the discussion on TCM physiological characters of females in follicular, ovulatory, luteal and menstrual phases and treatment principles, the clinical application of artificial cycle therapy of acupuncture and moxibustion was introduced for irregular menstruation and the typical cases were attached. It is suggested that the menstrual cycle follows the growth-consumption rule of yin, yang, qi and blood. The corresponding treatment principles should be applied in accordance with the change rule of menstrual cycle. Hence, it is worth to adopt the artificial cycle therapy of acupuncture and moxibustion for irregular menstruation in clinical application.

Scale relativity theory and integrative systems biology: 2. Macroscopic quantum-type mechanics.

PubMed

Nottale, Laurent; Auffray, Charles

2008-05-01

In these two companion papers, we provide an overview and a brief history of the multiple roots, current developments and recent advances of integrative systems biology and identify multiscale integration as its grand challenge. Then we introduce the fundamental principles and the successive steps that have been followed in the construction of the scale relativity theory, which aims at describing the effects of a non-differentiable and fractal (i.e., explicitly scale dependent) geometry of space-time. The first paper of this series was devoted, in this new framework, to the construction from first principles of scale laws of increasing complexity, and to the discussion of some tentative applications of these laws to biological systems. In this second review and perspective paper, we describe the effects induced by the internal fractal structures of trajectories on motion in standard space. Their main consequence is the transformation of classical dynamics into a generalized, quantum-like self-organized dynamics. A Schrödinger-type equation is derived as an integral of the geodesic equation in a fractal space. We then indicate how gauge fields can be constructed from a geometric re-interpretation of gauge transformations as scale transformations in fractal space-time. Finally, we introduce a new tentative development of the theory, in which quantum laws would hold also in scale space, introducing complexergy as a measure of organizational complexity. Initial possible applications of this extended framework to the processes of morphogenesis and the emergence of prokaryotic and eukaryotic cellular structures are discussed. Having founded elements of the evolutionary, developmental, biochemical and cellular theories on the first principles of scale relativity theory, we introduce proposals for the construction of an integrative theory of life and for the design and implementation of novel macroscopic quantum-type experiments and devices, and discuss their potential applications for the analysis, engineering and management of physical and biological systems and properties, and the consequences for the organization of transdisciplinary research and the scientific curriculum in the context of the SYSTEMOSCOPE Consortium research and development agenda.

Income-related health transfers principles and orderings of joint distributions of income and health.

PubMed

Khaled, Mohamad A; Makdissi, Paul; Yazbeck, Myra

2018-01-01

The objective of this article is to provide the analyst with the necessary tools that allow for a robust ordering of joint distributions of health and income. We contribute to the literature on the measurement and inference of socioeconomic health inequality in three distinct but complementary ways. First, we provide a formalization of the socioeconomic health inequality-specific ethical principle introduced by Erreygers et al. (2012) . Second, we propose new graphical tools and dominance tests for the identification of robust orderings of joint distributions of income and health associated with this new ethical principle. Finally, based on both pro-poor and pro-extreme ranks ethical principles we address a very important aspect of dominance literature: the inference. To illustrate the empirical relevance of the proposed approach, we compare joint distributions of income and a health-related behavior in the United States in 1997 and 2014. Copyright © 2017 Elsevier B.V. All rights reserved.

Novel Principles and Techniques to Create a Natural Design in Female Hairline Correction Surgery.

PubMed

Park, Jae Hyun

2015-12-01

Female hairline correction surgery is becoming increasingly popular. However, no guidelines or methods of female hairline design have been introduced to date. The purpose of this study was to create an initial framework based on the novel principles of female hairline design and then use artistic ability and experience to fine tune this framework. An understanding of the concept of 5 areas (frontal area, frontotemporal recess area, temporal peak, infratemple area, and sideburns) and 5 points (C, A, B, T, and S) is required for female hairline correction surgery (the 5A5P principle). The general concepts of female hairline correction surgery and natural design methods are, herein, explained with a focus on the correlations between these 5 areas and 5 points. A natural and aesthetic female hairline can be created with application of the above-mentioned concepts. The 5A5P principle of forming the female hairline is very useful in female hairline correction surgery.

Novel Principles and Techniques to Create a Natural Design in Female Hairline Correction Surgery

PubMed Central

2015-01-01

Abstract Background: Female hairline correction surgery is becoming increasingly popular. However, no guidelines or methods of female hairline design have been introduced to date. Methods: The purpose of this study was to create an initial framework based on the novel principles of female hairline design and then use artistic ability and experience to fine tune this framework. An understanding of the concept of 5 areas (frontal area, frontotemporal recess area, temporal peak, infratemple area, and sideburns) and 5 points (C, A, B, T, and S) is required for female hairline correction surgery (the 5A5P principle). The general concepts of female hairline correction surgery and natural design methods are, herein, explained with a focus on the correlations between these 5 areas and 5 points. Results: A natural and aesthetic female hairline can be created with application of the above-mentioned concepts. Conclusion: The 5A5P principle of forming the female hairline is very useful in female hairline correction surgery. PMID:26894014

Age and growth of flathead catfish, Pylodictus olivaris rafinesque, in the Altamaha River system, Georgia

USGS Publications Warehouse

Grabowski, T.B.; Isely, J.J.; Weller, R.R.

2004-01-01

Flathead catfish were introduced to the Altamaha River system, Georgia in the 1970's. We determined the length-weight relationship, Von Bertalanffy growth parameters, and back calculated lengths by examining the sagittal otoliths of 331 individuals captured from this population. We found that there were no sex related differences in length weight relationship or Von Bertalanffy growth parameters. Flathead catfish in the Altamaha River system grow at about the same rate as individuals in other introduced populations.

Biotechnology in the High School Classroom.

ERIC Educational Resources Information Center

Ahmed, Maryam

1996-01-01

Describes a project that introduces students to the field of biotechnology and provides them with an understanding of the basic principles and techniques as well as an opportunity to participate in experimental methodology. Presents specific science projects that deal with polymorphism in the lipase gene and the genetic engineering of a lipase…

An Experimental Introduction to Acoustics

ERIC Educational Resources Information Center

Black, Andy Nicholas; Magruder, Robert H.

2017-01-01

Learning and understanding physics requires more than studying physics texts. It requires doing physics. Doing research is a key opportunity for students to connect physical principles with their everyday experience. A powerful way to introduce students to research and technique is through subjects in which they might find interest. Presented is…

A Two-Week Guided Inquiry Protein Separation and Detection Experiment for Undergraduate Biochemistry

ERIC Educational Resources Information Center

Carolan, James P.; Nolta, Kathleen V.

2016-01-01

A laboratory experiment for teaching protein separation and detection in an undergraduate biochemistry laboratory course is described. This experiment, performed in two, 4 h laboratory periods, incorporates guided inquiry principles to introduce students to the concepts behind and difficulties of protein purification. After using size-exclusion…

Introducing the Accounting Equation with M&M's®

ERIC Educational Resources Information Center

Scofield, Barbara W.; Dye, Wilma

2009-01-01

On the first day of Principles of Accounting classes, students learn the fundamental accounting equation from which all financial accounting practice emerge. The accounting equation is the criterion by which companies are valued and by which company performance is measured. This activity simplifies assets, liabilities, and owners' equity to the…

Report of the Polymer Core Course Committee: Polymer Principles for the Chemical Engineering Curriculum.

ERIC Educational Resources Information Center

Journal of Chemical Education, 1985

1985-01-01

Offers suggestions for introducing polymer topics into: (1) introductory chemical engineering; (2) transport phenomena and unit operations; (3) chemical engineering thermodynamics; and (4) reaction engineering. Also included for each area are examples of textbooks in current use and a few typical problems. (JN)

Core ITAC for Career-Focused Education. Integrated Technical & Academic Competencies.

ERIC Educational Resources Information Center

Ohio State Univ., Columbus. Vocational Instructional Materials Lab.

This document introduces the underlying principles and components of Ohio's Integrated Technical and Academic Competencies (ITAC) system of career-focused education, which combines high-level academics and technical skills with a real-life context for learning that maximizes students' present and future academic and career success. The document…

Does TQM Affect Teaching and Learning?

ERIC Educational Resources Information Center

Mauriel, John J.; And Others

Many schools and school districts are attempting to introduce principles and practices of Total Quality Management (TQM). These attempts take many forms with varying degrees of commitment of resources and management attention. This paper describes the research design of a study intended to identify best current practices in applying TQM concepts…

Water System Adaptation To Hydrological Changes: Module 14, Life Cycle Analysis (LCA) and Prioritization Tools in Water System Adaptation

EPA Science Inventory

This course will introduce students to the fundamental principles of water system adaptation to hydrological changes, with emphasis on data analysis and interpretation, technical planning, and computational modeling. Starting with real-world scenarios and adaptation needs, the co...

Expressing the sense of the House of Representatives that the Federal Government should incorporate the principles of the Lean Six Sigma management strategy.

THOMAS, 112th Congress

Rep. Schweikert, David [R-AZ-5

2011-09-22

House - 10/03/2011 Referred to the Subcommittee on Federal Workforce, U.S. Postal Service, and Labor Policy. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation: