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1

Designing Establishment Survey Questionnaires.  

National Technical Information Service (NTIS)

In this paper, we demonstrate how establishment survey questionnaire design can be improved by utilizing different research methods such as focus groups, document design analyses, pretests, and response analysis surveys. We discuss the lack of research on...

K. L. Goldenberg P. A. Phipps S. Butani

2008-01-01

2

Quantitative evolutionary design  

PubMed Central

The field of quantitative evolutionary design uses evolutionary reasoning (in terms of natural selection and ultimate causation) to understand the magnitudes of biological reserve capacities, i.e. excesses of capacities over natural loads. Ratios of capacities to loads, defined as safety factors, fall in the range 1.2-10 for most engineered and biological components, even though engineered safety factors are specified intentionally by humans while biological safety factors arise through natural selection. Familiar examples of engineered safety factors include those of buildings, bridges and elevators (lifts), while biological examples include factors of bones and other structural elements, of enzymes and transporters, and of organ metabolic performances. Safety factors serve to minimize the overlap zone (resulting in performance failure) between the low tail of capacity distributions and the high tail of load distributions. Safety factors increase with coefficients of variation of load and capacity, with capacity deterioration with time, and with cost of failure, and decrease with costs of initial construction, maintenance, operation, and opportunity. Adaptive regulation of many biological systems involves capacity increases with increasing load; several quantitative examples suggest sublinear increases, such that safety factors decrease towards 1.0. Unsolved questions include safety factors of series systems, parallel or branched pathways, elements with multiple functions, enzyme reaction chains, and equilibrium enzymes. The modest sizes of safety factors imply the existence of costs that penalize excess capacities. Those costs are likely to involve wasted energy or space for large or expensive components, but opportunity costs of wasted space at the molecular level for minor components.

Diamond, Jared

2002-01-01

3

Comparing Quantitative and Qualitative Survey Data  

Microsoft Academic Search

This paper compares quantitative and qualitative data on firm level. The data is taken from two Swiss investment surveys. This has not yet been done in the literature. We will see that the mean change in investment of firms planning to increase (decrease) investments is positive (negative). In contrast, the mean change in investment of firms indi- cating “no change”

Rolf Schenker

2007-01-01

4

Design of future surveys  

USGS Publications Warehouse

This brief chapter addresses two related issues: how effort should be allocated to different parts of the sampling plan and, given optimal allocation, how large a sample will be required to achieve the PRISM accuracy target. Simulations based on data collected to date showed that 2 plots per cluster on rapid surveys, 2 intensive camps per field crew-year, 2-4 intensive plots per intensive camp, and 2-3 rapid surveys per intensive plot is the most efficient allocation of resources. Using this design, we investigated how crew-years should be allocated to each region in order to meet the PRISM accuracy target most efficiently. The analysis indicated that 40-50 crew-years would achieve the accuracy target for 18-24 of the 26 species breeding widely in the Arctic. This analysis was based on assuming that two rounds of surveys were conducted and that a 50% decline occurred between them. We discuss the complexity of making these estimates and why they should be viewed as first approximations.

Bart, Jonathan; Smith, Paul A.

2012-01-01

5

Survey Design - How to Begin Your Survey Design Project  

NSDL National Science Digital Library

This site, produced by Creative Research Systems, takes the user through the steps and decisions necessary when designing a survey. Pros and cons for each method are outlined and other issues in survey design are presented. The site does contain products which need to be purchased, such as a survey done by the corporation, but the page still contains a great deal of free resources which can be applied to conducting your own survey.

Systems, Creative R.

2008-12-19

6

Survey design for detecting rare freshwater mussels  

USGS Publications Warehouse

A common objective when surveying freshwater mussels is to detect the presence of rare populations. In certain situations, such as when endangered or threatened species are potentially in the area of a proposed impact, the survey should be designed to ensure a high probability of detecting species presence. Linking survey design to probability of detecting species presence has been done for quantitative surveys, but commonly applied designs that are based on timed searches have not made that connection. I propose a semiquantitative survey design that links search area and search efficiency to probability of detecting species presence. The survey can be designed to protect against failing to detect populations above a threshold abundance (or density). I illustrate the design for surveys to detect clubshell (Pluerobema clava) and northern riffleshell (Epioblasma torulosa rangiana) in the Allegheny River. Monte Carlo simulation indicated that the proposed survey design performs well under a range of spatial distributions and low densities (<0.05 m2) where search area is sufficient to ensure that the probability of detecting species presence is predicted to be ???0.85. ?? 2006 by The North American Benthological Society.

Smith, D. R.

2006-01-01

7

Applying Knowledge of Quantitative Design and Analysis  

ERIC Educational Resources Information Center

|This study compared and contrasted two quantitative scholarly articles in relation to their research designs. Their designs were analyzed by the comparison of research references and research specific vocabulary to describe how various research methods were used. When researching and analyzing quantitative scholarly articles, it is imperative to…

Baskas, Richard S.

2011-01-01

8

WATERSHED BASED SURVEY DESIGNS  

EPA Science Inventory

The development of watershed-based design and assessment tools will help to serve the multiple goals for water quality monitoring required under the Clean Water Act, including assessment of regional condition to meet Section 305(b), identification of impaired water bodies or wate...

9

STRATIFIED TELEPHONE SURVEY DESIGNS  

Microsoft Academic Search

Abstract Two stage random ,digit dialing procedures ,as developed ,by Mitofsky ,and elaborated by Waksberg ,are widely used in telephone ,sampling ,of the ,U.S. household population. Current alternative approaches have, relative to this procedure, coverage and cost deficiencies. These deficiencies are addressed through,telephone ,sample ,designs ,which ,use listed number ,information ,to improve the cost-efficiency of random digit dialing. The telephone

Robert J. Casady

1993-01-01

10

Designing Surveys for Student Affairs Research.  

ERIC Educational Resources Information Center

|Describes the use of sample surveys in student affairs data collection. Discusses guidelines for planning, designing, and conducting research projects which employ survey methodology. Considers survey methodology, wording of questions, survey format, and sample size. (RC)|

Davis-Palcic, Cynthia; And Others

1982-01-01

11

Report on Solar Water Heating Quantitative Survey  

SciTech Connect

This report details the results of a quantitative research study undertaken to better understand the marketplace for solar water-heating systems from the perspective of home builders, architects, and home buyers.

Focus Marketing Services

1999-05-06

12

Quantitative optical techniques for dense sprays investigation: A survey  

Microsoft Academic Search

The experimental study of dense sprays by optical techniques poses many challenges and no methods have proven to be completely reliable when accurate quantitative data are required, for example to validate breakup models and CFD simulations. The present survey is aimed to a critical analysis of optical techniques capable to provide quantitative and reliable data in dense sprays and to

A. Coghe; G. E. Cossali

2012-01-01

13

Watershed-based survey designs.  

PubMed

Watershed-based sampling design and assessment tools help serve the multiple goals for water quality monitoring required under the Clean Water Act, including assessment of regional conditions to meet Section 305(b), identification of impaired water bodies or watersheds to meet Section 303(d), and development of empirical relationships between causes or sources of impairment and biological responses. Creation of GIS databases for hydrography, hydrologically corrected digital elevation models, and hydrologic derivatives such as watershed boundaries and upstream-downstream topology of subcatchments would provide a consistent seamless nationwide framework for these designs. The elements of a watershed-based sample framework can be represented either as a continuous infinite set defined by points along a linear stream network, or as a discrete set of watershed polygons. Watershed-based designs can be developed with existing probabilistic survey methods, including the use of unequal probability weighting, stratification, and two-stage frames for sampling. Case studies for monitoring of Atlantic Coastal Plain streams, West Virginia wadeable streams, and coastal Oregon streams illustrate three different approaches for selecting sites for watershed-based survey designs. PMID:15861987

Detenbeck, Naomi E; Cincotta, Dan; Denver, Judith M; Greenlee, Susan K; Olsen, Anthony R; Pitchford, Ann M

2005-04-01

14

Design-Based and Model-Based Inference In Surveys of Fresh Water Mollusks.  

National Technical Information Service (NTIS)

Well-known concepts in statistical inference and sampling theory are used to develop recommendations for planning and analyzing the results of quantitative surveys of freshwater mollusks. Two methods of inference commonly used in survey sampling (design-b...

R. M. Dorazio

2000-01-01

15

Qualities of a Psychiatric Mentor: A Quantitative Singaporean Survey  

ERIC Educational Resources Information Center

|Objective: Psychiatric mentors are an important part of the new, seamless training program in Singapore. There is a need to assess the qualities of a good psychiatric mentor vis-a-vis those of a good psychiatrist. Method: An anonymous survey was sent out to all psychiatry trainees and psychiatrists in Singapore to assess quantitatively the…

Tor, Phern-Chern; Goh, Lee-Gan; Ang, Yong-Guan; Lim, Leslie; Winslow, Rasaiah-Munidasa; Ng, Beng-Yeong; Wong, Sze-Tai; Ng, Tse-Pin; Kia, Ee-Heok

2011-01-01

16

Dark Energy Survey Instrument Design.  

National Technical Information Service (NTIS)

We describe a new project, the Dark Energy Survey (DES), aimed at measuring the dark energy equation of state parameter, w, to a statistical precision of approximately 5%, with four complementary techniques. The survey will use a new 3 sq. deg. mosaic cam...

B. Flaugher

2006-01-01

17

Survey Design in Marine Environment: Three Examples.  

National Technical Information Service (NTIS)

Three examples are used to illustrate the range of statistical design problems encountered in marine research. The first example uses nonlinear design methods to find the optimum survey pattern for accurately locating the positions of acoustic beacons use...

W. Smith

1978-01-01

18

Construction of response surface designs for qualitative and quantitative factors  

Microsoft Academic Search

A general approach is proposed for constructing response surface designs of economical size for qualitative and quantitative factors. It starts with an efficient design (e.g. central composite design) for the quantitative factors and then partitions the design points into groups corresponding to different level combinations of the qualitative factors. Good designs are selected to ensure high estimation efficiency for models

C. F. J. Wu; Yuan Ding

1998-01-01

19

[The reflection spectrometer and quantitative analysis design].  

PubMed

The reflection spectrometer with optical fibre transmission was designed and used in quantitative analysis. The reflection spectrometry was applied to the determination of reducing sugar in samples based on the reduction reaction of the reducing sugar with Fehling's reagent. The reduction reaction was carried out in a micro-reaction cell, and the reddish colored Cu2O produced was settled at the bottom of the reaction cell. The reflectance R(infinity), which is directly proportional to the amount of Cu2O produced, was measured by the reflection spectrometer. The fundamental principle, effect factors, and experimental conditions of the method were discussed. Linear relationship was obtained in the range of 20-120 microg of reducing sugar. The special features of this method were its simplicity in operation, relatively high sensitivity of determination, and the use of small amount of reagent. Satisfactory results were obtained in its application to the analysis of wine and honey samples. PMID:16883882

Zhang, Ping; Chen, Yong-Heng; Yao, Yan

2006-05-01

20

Innovative rate design survey. Final report  

Microsoft Academic Search

This report presents the results of a survey on electric utility innovative rate design activity in the United States today. The survey, conducted during the fall of 1983, included all major investor-owned utilities and a representative sample of publicly-owned utilities. For the 11 innovative rate types identified, information was recorded by class of service and covered rates already in effect

L. A. Simon; M. Weiss; P. C. McMurray

1985-01-01

21

SURVEY OF HIGH CAPACITY STEAM GENERATOR DESIGN  

Microsoft Academic Search

The results of a survey of world literature on high capacity steam ; generator design are reported. Salient features of molten metal steam generators ; as well as hot plates for heating surfaces are included. (D.E.B.)

Bruckner

1954-01-01

22

An Integrative Model for Teaching Quantitative Research Design  

Microsoft Academic Search

Teaching quantitative research design continues to challenge management educators. Challenges arise because this research requires expertise in multiple design elements including theory development, measurement, and statistical analysis. Moreover, capable design necessitates the seamless integration of these separate elements with each other. To aid educators, this article proposes an integrative model for teaching quantitative research. The model specifically focuses on matching

Patricia Doyle Corner

2002-01-01

23

Estimates from two survey designs: national hospital discharge survey.  

PubMed

The methodology for the National Hospital Discharge Survey (NHDS) has been revised in several ways. These revisions, which were implemented for the 1988 NHDS, included adoption of a different hospital sampling frame, changes in the sampling design (in particular the implementation of a three-stage design), increased use of data purchased from abstracting service organizations, and adjustments to the estimation procedures used to derive the national estimates. To investigate the effects of these revisions on the estimates of hospital use from the NHDS, data were collected from January through March of 1988 using both the old and the new survey methods. This study compared estimates based on the old and the new survey methods for a variety of hospital and patient characteristics. Although few estimates were identical across survey methodologies, most of the variations could be attributed to sampling error. Estimates from two different samples of the same population would be expected to vary by chance even if precisely the same methods were used to collect and process the data. Because probability samples were used for the old and new survey methodologies, sampling error could be measured. Approximate relative standard errors were calculated for the estimates using the old and new survey methods. Taking these errors into account, less than 10 percent of the estimates were found to differ across survey methodologies at the 0.05 level of significance. Because a large number of comparisons were made, 5 percent of the estimates could have been found to be significantly different by chance alone. When there were statistically significant differences in nonmedical data, the new methods appeared to produce more accurate estimates than the old methods did. Race was more likely to be reported using the new methods. "New" estimates for hospitals in the West Region and government-owned hospitals were more similar than the corresponding "old" estimates to data from the census of hospitals conducted by the American Hospital Association. The numerous significant differences in estimates for bed size categories between the two survey methodologies reflected the change in the universe and definition of beds for the new survey. Few statistically significant differences were found in the medical data using the old and the new survey methods. Two main differences, in estimates for cataract and alcohol dependence syndrome, may have resulted from problems with the new survey. A measurement error, reporting outpatients to the NHDS, is one possible explanation of the higher estimates for diagnosis of cataract using the new survey methods.(ABSTRACT TRUNCATED AT 400 WORDS) PMID:1376945

Haupt, B J; Kozak, L J

1992-05-01

24

Conducting Research on the Internet: Online Survey Design, Development and Implementation Guidelines  

Microsoft Academic Search

Using the Internet to conduct quantitative research presents challenges not found in conventional research. Some of our knowledge concerning the effective design and use of paper-based surveys does translate into electronic formats. However, electronic surveys have distinctive technological, demographic and response characteristics that affect how they should be designed, when they can be used and how they can be implemented.

Dorine Andrews; Blair Nonnecke; Jennifer Preece

2003-01-01

25

WATERSHED-BASED SURVEY DESIGNS  

EPA Science Inventory

Water-based sampling design and assessment tools help serve the multiple goals for water quality monitoring required under the Clean Water Act, including assessment of regional conditions to meet Section 305(b), identification if impaired water bodies or watersheds to meet Sectio...

26

Quantitative Methods for Evaluating Hospital Designs.  

National Technical Information Service (NTIS)

The study provides an integrated quantitative-qualitative basis for decisions involving the relative locations of functions, and hence facilities, within the individual short-term, general, voluntary hospital. The approach used in attacking the problem wa...

G. L. Delon H. E. Smalley

1970-01-01

27

Survey Design for Large-Scale, Unstructured Resistivity Surveys  

NASA Astrophysics Data System (ADS)

In this paper, we discuss the issues in designing data collection strategies for large-scale, poorly structured resistivity surveys. Existing or proposed applications for these types of surveys include carbon sequestration, enhanced oil recovery monitoring, monitoring of leachate from working or abandoned mines, and mineral surveys. Electrode locations are generally chosen by land access, utilities, roads, existing wells etc. Classical arrays such as the Wenner array or dipole-dipole arrays are not applicable if the electrodes cannot be placed in quasi-regular lines or grids. A new, far more generalized strategy is needed for building data collection schemes. Following the approach of earlier two-dimensional (2-D) survey designs, the proposed method begins by defining a base array. In (2-D) design, this base array is often a standard dipole-dipole array. For unstructured three-dimensional (3-D) design, determining this base array is a multi-step process. The first step is to determine a set of base dipoles with similar characteristics. For example, the base dipoles may consist of electrode pairs trending within 30 degrees of north and with a length between 100 and 250 m in length. These dipoles are then combined into a trial set of arrays. This trial set of arrays is reduced by applying a series of filters based on criteria such as separation between the dipoles. Using the base array set, additional arrays are added and tested to determine the overall improvement in resolution and to determine an optimal set of arrays. Examples of the design process are shown for a proposed carbon sequestration monitoring system.

Labrecque, D. J.; Casale, D.

2009-12-01

28

Design-based and model-based inference in surveys of freshwater mollusks  

USGS Publications Warehouse

Well-known concepts in statistical inference and sampling theory are used to develop recommendations for planning and analyzing the results of quantitative surveys of freshwater mollusks. Two methods of inference commonly used in survey sampling (design-based and model-based) are described and illustrated using examples relevant in surveys of freshwater mollusks. The particular objectives of a survey and the type of information observed in each unit of sampling can be used to help select the sampling design and the method of inference. For example, the mean density of a sparsely distributed population of mollusks can be estimated with higher precision by using model-based inference or by using design-based inference with adaptive cluster sampling than by using design-based inference with conventional sampling. More experience with quantitative surveys of natural assemblages of freshwater mollusks is needed to determine the actual benefits of different sampling designs and inferential procedures.

Dorazio, R. M.

1999-01-01

29

Six Criteria for Survey Sample Design Evaluation.  

ERIC Educational Resources Information Center

|The popularity of the sample survey in educational research makes it necessary for consumers to tell a good study from a poor one. Several sources were identified that gave advice on how to evaluate a sample design. The sources are either limited or too extensive to use in a practical sense. The purpose of this paper is to recommend six important…

Wang, Lin; Fan, Xitao

30

Optimal design of focused experiments and surveys  

NASA Astrophysics Data System (ADS)

Experiments and surveys are often performed to obtain data that constrain some previously underconstrained model. Often, constraints are most desired in a particular subspace of model space. Experiment design optimization requires that the quality of any particular design can be both quantified and then maximized. This study shows how the quality can be defined such that it depends on the amount of information that is focused in the particular subspace of interest. In addition, algorithms are presented which allow one particular focused quality measure (from the class of focused measures) to be evaluated efficiently. A subclass of focused quality measures is also related to the standard variance and resolution measures from linearized inverse theory. The theory presented here requires that the relationship between model parameters and data can be linearized around a reference model without significant loss of information. Physical and financial constraints define the space of possible experiment designs. Cross-well tomographic examples are presented, plus a strategy for survey design to maximize information about linear combinations of parameters such as bulk modulus, ? =?+ 2?/3.

Curtis, Andrew

1999-10-01

31

Design of an Embedded Video Compression System - A Quantitative Approach  

Microsoft Academic Search

A good system design should spend resources in a way that the system is well bal- anced and a high performance\\/cost ratio is achieved. In a quantitative approach the deci- sions upon the most suitable size for each com- ponent is based on measured analysis data. Adopting this approach for Embedded Syste- m(ES) design requires to measure analysis data for

Jörg Wilberg; Raul Camposano; Ursula Westerholz; Uwe Steinhausen

1994-01-01

32

The Dark Energy Survey CCD imager design  

SciTech Connect

The Dark Energy Survey is planning to use a 3 sq. deg. camera that houses a {approx} 0.5m diameter focal plane of 62 2kx4k CCDs. The camera vessel including the optical window cell, focal plate, focal plate mounts, cooling system and thermal controls is described. As part of the development of the mechanical and cooling design, a full scale prototype camera vessel has been constructed and is now being used for multi-CCD readout tests. Results from this prototype camera are described.

Cease, H.; DePoy, D.; Diehl, H.T.; Estrada, J.; Flaugher, B.; Guarino, V.; Kuk, K.; Kuhlmann, S.; Schultz, K.; Schmitt, R.L.; Stefanik, A.; /Fermilab /Ohio State U. /Argonne

2008-06-01

33

Quantitative design and evaluation of enhancement\\/thresholding edge detectors  

Microsoft Academic Search

Quantitative design and performance evaluation techniques are developed for the enhancement\\/thresholding class of image edge detectors. The design techniques are based on statistical detection theory and deterministic pattern-recognition classification procedures. The performance evaluation methods developed include: a)deterministic measurement of the edge gradient amplitude; b)comparison of the probabilities of correct and false edge detection; and c) figure of merit computation. The

I. E. Abdou; W. K. Pratt

1979-01-01

34

New journal selection for quantitative survey of infectious disease research: application for Asian trend analysis  

Microsoft Academic Search

BACKGROUND: Quantitative survey of research articles, as an application of bibliometrics, is an effective tool for grasping overall trends in various medical research fields. This type of survey has been also applied to infectious disease research; however, previous studies were insufficient as they underestimated articles published in non-English or regional journals. METHODS: Using a combination of Scopus™ and PubMed, the

Hiromi Takahashi-Omoe; Katsuhiko Omoe; Nobuhiko Okabe

2009-01-01

35

Factors Affecting Horseshoe Crab Limulus polyphemus Trawl Survey Design  

Microsoft Academic Search

There is currently a lack of abundance information for effectively managing horseshoe crabs Limulus polyphemus. A trawl survey program that specifically targets horseshoe crabs would provide that information. We conducted a study to examine the factors that would influence the trawl survey design. Depth, topography, and time of day were examined as potential survey design influences. Horseshoe crab catches were

David Hata; Jim Berkson

2004-01-01

36

Responsive design for household surveys: tools for actively controlling survey errors and costs  

Microsoft Academic Search

Over the past few years surveys have expanded to new populations, have incorporated measurement of new and more complex substantive issues and have adopted new data collection tools. At the same time there has been a growing reluctance among many household populations to participate in surveys. These factors have combined to present survey designers and survey researchers with increased uncertainty

Robert M. Groves; Steven G. Heeringa

2006-01-01

37

Survey over image thresholding techniques and quantitative performance evaluation  

Microsoft Academic Search

We conduct an exhaustive survey of image thresholding methods, categorize them, express their formulas under a uniform notation, and finally carry their performance comparison. The thresholding methods are categorized according to the information they are exploiting, such as histogram shape, measurement space clustering, entropy, object attributes, spatial correlation, and local gray-level surface. 40 selected thresholding methods from various categories are

Mehmet Sezgin; Bülent Sankur

2004-01-01

38

A Quantitative Survey of Corporate Governance in Russia  

Microsoft Academic Search

The objective of this paper is to verify the range and depth of the study on corporate governance in Russia through a comprehensive survey of 192 pioneering research works. With regard to the internal structure of Russian corporations, a great deal of research has been conducted in a relatively short time since the collapse of the Soviet Union by many

Ichiro IWASAKI

39

ENTERPRISE REFORM AND CORPORATE GOVERNANCE IN RUSSIA: A QUANTITATIVE SURVEY  

Microsoft Academic Search

Abstract.?The objective of this paper is to verify the range and depth of the study on corporate governance in Russia through a comprehensive survey of 202 research works. With regard to the internal structure of Russian corporations, a great deal of research has been conducted in a relatively short time since the collapse of the Soviet Union by many highly

Ichiro Iwasaki

2007-01-01

40

Survey of rural, private wells. Statistical design  

USGS Publications Warehouse

Half of Illinois' 38 million acres were planted in corn and soybeans in 1988. On the 19 million acres planted in corn and soybeans, approximately 1 million tons of nitrogen fertilizer and 50 million pounds of pesticides were applied. Because groundwater is the water supply for over 90 percent of rural Illinois, the occurrence of agricultural chemicals in groundwater in Illinois is of interest to the agricultural community, the public, and regulatory agencies. The occurrence of agricultural chemicals in groundwater is well documented. However, the extent of this contamination still needs to be defined. This can be done by randomly sampling wells across a geographic area. Key elements of a random, water-well sampling program for regional groundwater quality include the overall statistical design of the program, definition of the sample population, selection of wells to be sampled, and analysis of survey results. These elements must be consistent with the purpose for conducting the program; otherwise, the program will not provide the desired information. The need to carefully design and conduct a sampling program becomes readily apparent when one considers the high cost of collecting and analyzing a sample. For a random sampling program conducted in Illinois, the key elements, as well as the limitations imposed by available information, are described.

Mehnert, Edward; Schock, Susan, C.

1991-01-01

41

Practical Guidelines for Evaluating Sampling Designs in Survey Studies.  

ERIC Educational Resources Information Center

|The popularity of sample surveys in evaluation and research makes it necessary for consumers to tell a good survey from a poor one. Several sources were identified that gave advice on how to evaluate a sample design used in a survey study. The sources are either too limited or too extensive to be useful practically. The purpose of this paper is…

Fan, Xitao; Wang, Lin

42

Design and Validation of the Quantum Mechanics Conceptual Survey  

ERIC Educational Resources Information Center

|The Quantum Mechanics Conceptual Survey (QMCS) is a 12-question survey of students' conceptual understanding of quantum mechanics. It is intended to be used to measure the relative effectiveness of different instructional methods in modern physics courses. In this paper, we describe the design and validation of the survey, a process that included…

McKagan, S. B.; Perkins, K. K.; Wieman, C. E.

2010-01-01

43

Design Effects and the Analysis of Survey Data.  

ERIC Educational Resources Information Center

|The National Assessment of Educational Progress (NAEP), like most large national surveys, employs a complex stratified multistage unequal probability sample. The design provides a rigorous justification for extending survey results to the entire U.S. target population. Developments in the analysis of data from complex surveys which provide a…

Folsom, Ralph E.; Williams, Rick L.

44

A survey of user-centered design practice in China  

Microsoft Academic Search

This paper is the first time to report the results of a recent survey of user-centered design (UCD) practice in China, conducted in 2007. The survey involved over four hundred respondents who were at the user friendly conference or attended other UCD related activities. The survey identified, e.g. practitioners' demographics and experience, the type of organization, the usage frequency of

Ronggang Zhou; Shengshan Huang; Xiangang Qin; Jason Huang

2008-01-01

45

Survey of protective canopy design. Final report  

Microsoft Academic Search

The protective canopy survey consisted of visits to 10 coal mines and to manufacturing of coal mining equipment. Mines with mining heights of 60 inches and higher were visited to evaluate protective canopy experience, operator acceptance, and to identify possible improvement areas. The report provides the results of the survey and evaluation of protective canopies currently in use on coal

R. Farrar; R. Champney; L. Weiner

1974-01-01

46

Young people, alcohol, and designer drinks: quantitative and qualitative study.  

PubMed Central

OBJECTIVE: To examine the appeal of "designer drinks" to young people. DESIGN: Qualitative and quantitative research comprising group discussions and questionnaire led interviews with young people accompanied by a self completion questionnaire. SETTINGS: Argyll and Clyde Health Board area, west Scotland. SUBJECTS: Eight groups aged 12-17 years; 824 aged 12-17 recruited by multistage cluster probability sample from the community health index. RESULTS: Young people were familiar with designer drinks, especially MD 20/20 and leading brands of strong white cider. Attitudes towards these drinks varied quite distinctly with age, clearly reflecting their attitudes towards and motivations for drinking in general. The brand imagery of designer drinks-in contrast with that of more mainstream drinks-matched many 14 and 15 year olds' perceptions and expectations of drinking. Popularity of designer drinks peaked between the ages of 13 and 16 while more conventional drinks showed a consistent increase in popularity with age. Consumption of designer drinks tended to be in less controlled circumstances and was associated with heavier alcohol intake and greater drunkenness. CONCLUSIONS: Designer drinks are a cause for concern. They appeal to young people, often more so than conventional drinks, and are particularly attractive to 14-16 year olds. Consumption of designer drinks is also associated with drinking in less controlled environments, heavier drinking, and greater drunkenness. There is a need for policy debate to assess the desirability of these drinks and the extent to which further controls on their marketing are required.

Hughes, K.; MacKintosh, A. M.; Hastings, G.; Wheeler, C.; Watson, J.; Inglis, J.

1997-01-01

47

Design effects in the transition to web-based surveys.  

PubMed

Innovation within survey modes should always be mitigated by concerns about survey quality and in particular sampling, coverage, nonresponse, and measurement error. This is as true today with the development of web surveying as it was in the 1970s when telephone surveying was being developed. This paper focuses on measurement error in web surveys. Although Internet technology provides significant opportunities for innovation in survey design, systematic research has yet to be conducted on how most of the possible innovations might affect measurement error, leaving many survey designers "out in the cold." This paper summarizes recent research to provide an overview of how choosing the web mode affects the asking and answering of questions. It starts with examples of how question formats used in other survey modes perform differently in the web mode. It then provides examples of how the visual design of web surveys can influence answers in unexpected ways and how researchers can strategically use visual design to get respondents to provide their answers in a desired format. Finally, the paper concludes with suggested guidelines for web survey design. PMID:17466824

Dillman, Don A; Smyth, Jolene D

2007-05-01

48

Research on Basic Design Education: An International Survey  

ERIC Educational Resources Information Center

This paper reports on the results of a survey and qualitative analysis on the teaching of "Basic Design" in schools of design and architecture located in 22 countries. In the context of this research work, Basic Design means the teaching and learning of design fundamentals that may also be commonly referred to as the Principles of Two- and…

Boucharenc, C. G.

2006-01-01

49

Quantitative survey on the shape of the back of men's head as viewed from the side.  

PubMed

This article classifies quantitatively into 4 shapes men's back part of the head viewed from the side that are demonstrated in some of the figures in this article. Because of self-evident reasons, the shapes were blurred. The survey is based on the analysis of 2220 shapes obtained by photographing mainly bald men and by finding pictures in the Internet. To the best of the author's knowledge, this quantitative approach has never been implemented before. The results obtained are as follows: the percentage of 376 "flat heads" is 17%; the percentage of 755 "little round heads," 34%; the percentage of 1017 "round heads," 45.8%; and the percentage of 72 "very round heads," 3.2%. This quantitative survey is an additional step in analyzing quantitatively the shape of the parts of the face wherein, in articles that were previously published or that will be published in this magazine, shapes of the nose, ear conch, and human eye were analyzed quantitatively. In addition, the shapes of the leg toes were also analyzed. Finally, it should be noted that, because of obvious reasons, the survey is based on men's head, most of which are with baldness. PMID:23714907

Tamir, Abraham

2013-05-01

50

Survey Design under the Regression Superpopulation Model  

Microsoft Academic Search

The construction of sample designs and estimators under a linear regression superpopulation model is considered. The anticipated variance, the variance of the predictor computed with respect to the sampling design and the superpopulation model, is used as a criterion for evaluating probability designs and model-unbiased predictors. Regression predictors that are model unbiased and design consistent are constructed.

Cary T. Isaki; Wayne A. Fuller

1982-01-01

51

Survey data collection: operationalizing the research design.  

PubMed

This article describes how indigenous interviewers were used to collect data about the health needs and resources in a black South African township. The survey was done during the dismantling of the apartheid political system of South Africa. The political unrest, distrust, and tension were barriers to carrying out a survey and threatened the quality of the data collection. A vulnerability of survey research is the difficulty in controlling the variables of the community and the interviewer during the process of data collection. How this survey was carried out, in this unstable setting, influenced the quality of the data and the validity and reliability of the research. The data-collection requirements were carried out in a way that was functional in the real-world setting while maintaining research standards. The criteria used for hiring interviewers and the content and delivery of training were effective in this tense, educationally disadvantaged community setting. Methods that were used to motivate and supervise interviewers were successful and are recommended for use in similar survey research. PMID:8936247

Hildebrandt, E

1996-04-01

52

Considerations in 3D depth-specific PS survey design  

Microsoft Academic Search

A new sparse-shot design for 3D P-S surveys is introduced. In the sparse shot design a shot separation greater than the receiver separation is used, and given by the relationship ?s = ?r(1 + Vp\\/Vs)\\/2. This design yields fewer non-unique P-S traces than traditional 3D surveys with equal source and receiver intervals. New measures of global offset and azimuth distribution

Don C. Lawton; Peter W. Cary

2003-01-01

53

Designing surveys for tests of gravity.  

PubMed

Modified gravity theories may provide an alternative to dark energy to explain cosmic acceleration. We argue that the observational programme developed to test dark energy needs to be augmented to capture new tests of gravity on astrophysical scales. Several distinct signatures of gravity theories exist outside the 'linear' regime, especially owing to the screening mechanism that operates inside halos such as the Milky Way to ensure that gravity tests in the solar system are satisfied. This opens up several decades in length scale and classes of galaxies at low redshift that can be exploited by surveys. While theoretical work on models of gravity is in the early stages, we can already identify new regimes that cosmological surveys could target to test gravity. These include: (i) a small-scale component that focuses on the interior and vicinity of galaxy and cluster halos, (ii) spectroscopy of low-redshift galaxies, especially galaxies smaller than the Milky Way, in environments that range from voids to clusters, and (iii) a programme of combining lensing and dynamical information, from imaging and spectroscopic surveys, respectively, on the same (or statistically identical) sample of galaxies. PMID:22084295

Jain, Bhuvnesh

2011-12-28

54

A survey of user-centered design practice  

Microsoft Academic Search

This paper reports the results of a recent survey of user-centered design (UCD) practitioners. The survey involved over a hundred respondents who were CHI'2000 attendees or current UPA members. The paper identifies the most widely used methods and processes, the key factors that predict success, and the critical tradeoffs practitioners must make in applying UCD methods and processes. Results show

Karel Vredenburg; Ji-Ye Mao; Paul W. Smith; Tom Carey

2002-01-01

55

A survey of spacecraft thermal design solutions  

Microsoft Academic Search

A number of thermal projects are outlined giving a perspective on the scope and depth of activities in the thermal control group. A set of designs are presented in a form to illustrate some of the more innovative work. Design configurations, solution techniques, and flight anomalies are discussed. Activities include the instruments of the Hubble Space Telescope, Space Station Freedom,

R. Humphries; R. Wegrich; E. Pierce; W. Patterson

1991-01-01

56

The Dark Energy Survey instrument design  

SciTech Connect

We describe a new project, the Dark Energy Survey (DES), aimed at measuring the dark energy equation of state parameter, w, to a statistical precision of {approx}5%, with four complementary techniques. The survey will use a new 3 sq. deg. mosaic camera (DECam) mounted at the prime focus of the Blanco 4m telescope at the Cerro-Tololo International Observatory (CTIO). DECam includes a large mosaic camera, a five element optical corrector, four filters (g,r,i,z), and the associated infrastructure for operation in the prime focus cage. The focal plane consists of 62 2K x 4K CCD modules (0.27''/pixel) arranged in a hexagon inscribed within the 2.2 deg. diameter field of view. We plan to use the 250 micron thick fully-depleted CCDs that have been developed at the Lawrence Berkeley National Laboratory (LBNL). At Fermilab, we will establish a packaging factory to produce four-side buttable modules for the LBNL devices, as well as to test and grade the CCDs. R&D is underway and delivery of DECam to CTIO is scheduled for 2009.

Flaugher, B.; /Fermilab

2006-05-01

57

Acoustical surveys of Methane plumes using the quantitative echo sounder in Japan Sea  

Microsoft Academic Search

R&T\\/V Umitaka-maru(Tokyo Univ. of Marine Science and Technology) and R\\/V Natsushima(JAMSTEC) sailed to the methane seep area on a small ridge in the Naoetsu Basin, in the eastern margin of the Sea of Japan in 2004,2005 and 2006 to survey the ocean floor gas hydrate and related acoustic signatures of methane plumes by using a quantitative echo sounder and a

Chiharu Aoyama; R. Matsumoto; A. Hiruta; O. Ishizaki; H. Machiyama; H. Numanami; M. Hiromatsu; G. Snyder

2007-01-01

58

On locating multiple interacting quantitative trait loci in intercross designs.  

PubMed

A modified version (mBIC) of the Bayesian Information Criterion (BIC) has been previously proposed for backcross designs to locate multiple interacting quantitative trait loci. In this article, we extend the method to intercross designs. We also propose two modifications of the mBIC. First we investigate a two-stage procedure in the spirit of empirical Bayes methods involving an adaptive (i.e., data-based) choice of the penalty. The purpose of the second modification is to increase the power of detecting epistasis effects at loci where main effects have already been detected. We investigate the proposed methods by computer simulations under a wide range of realistic genetic models, with nonequidistant marker spacings and missing data. In the case of large intermarker distances we use imputations according to Haley and Knott regression to reduce the distance between searched positions to not more than 10 cM. Haley and Knott regression is also used to handle missing data. The simulation study as well as real data analyses demonstrates good properties of the proposed method of QTL detection. PMID:16624924

Baierl, Andreas; Bogdan, Ma?gorzata; Frommlet, Florian; Futschik, Andreas

2006-04-19

59

On Locating Multiple Interacting Quantitative Trait Loci in Intercross Designs  

PubMed Central

A modified version (mBIC) of the Bayesian Information Criterion (BIC) has been previously proposed for backcross designs to locate multiple interacting quantitative trait loci. In this article, we extend the method to intercross designs. We also propose two modifications of the mBIC. First we investigate a two-stage procedure in the spirit of empirical Bayes methods involving an adaptive (i.e., data-based) choice of the penalty. The purpose of the second modification is to increase the power of detecting epistasis effects at loci where main effects have already been detected. We investigate the proposed methods by computer simulations under a wide range of realistic genetic models, with nonequidistant marker spacings and missing data. In the case of large intermarker distances we use imputations according to Haley and Knott regression to reduce the distance between searched positions to not more than 10 cM. Haley and Knott regression is also used to handle missing data. The simulation study as well as real data analyses demonstrates good properties of the proposed method of QTL detection.

Baierl, Andreas; Bogdan, Malgorzata; Frommlet, Florian; Futschik, Andreas

2006-01-01

60

Bayesian mapping of quantitative trait loci under complicated mating designs.  

PubMed Central

Quantitative trait loci (QTL) are easily studied in a biallelic system. Such a system requires the cross of two inbred lines presumably fixed for alternative alleles of the QTL. However, development of inbred lines can be time consuming and cost ineffective for species with long generation intervals and severe inbreeding depression. In addition, restriction of the investigation to a biallelic system can sometimes be misleading because many potentially important allelic interactions do not have a chance to express and thus fail to be detected. A complicated mating design involving multiple alleles mimics the actual breeding system. However, it is difficult to develop the statistical model and algorithm using the classical maximum-likelihood method. In this study, we investigate the application of a Bayesian method implemented via the Markov chain Monte Carlo (MCMC) algorithm to QTL mapping under arbitrarily complicated mating designs. We develop the method under a mixed-model framework where the genetic values of founder alleles are treated as random and the nongenetic effects are treated as fixed. With the MCMC algorithm, we first draw the gene flows from the founders to the descendants for each QTL and then draw samples of the genetic parameters. Finally, we are able to simultaneously infer the posterior distribution of the number, the additive and dominance variances, and the chromosomal locations of all identified QTL.

Yi, N; Xu, S

2001-01-01

61

Methodologies for designing CIM systems: A survey  

Microsoft Academic Search

It is a well known fact in the industrial world today, that CIM systems cannot be bought. They must be designed by the user, who will choose and integrate the various components. The selection of these will be influenced by such factors as their availability on the market, the human aspects, difficulty in capturing the knowledge and complexity of the

G. Doumeingts; B. Vallespir; D. Chen

1995-01-01

62

Computer aided facilities design : An international survey  

Microsoft Academic Search

A wide variety of computer programmes for solving facilities design problems have been developed. Since the arrival of programmes like CORELAP and CRAFT in the early sixties, a variety of aspects of this problem have been approached using computer technology. Engineers and architects appear to be the developers and users of most of these programmesThis paper describes the results of

JAMES M. MOORE

1974-01-01

63

Magnetic resonance elastography hardware design: a survey.  

PubMed

Magnetic resonance elastography (MRE) is an emerging technique capable of measuring the shear modulus of tissue. A suspected tumour can be identified by comparing its properties with those of tissues surrounding it; this can be achieved even in deep-lying areas as long as mechanical excitation is possible. This would allow non-invasive methods for cancer-related diagnosis in areas not accessible with conventional palpation. An actuating mechanism is required to generate the necessary tissue displacements directly on the patient in the scanner and three different approaches, in terms of actuator action and position, exist to derive stiffness measurements. However, the magnetic resonance (MR) environment places considerable constraints on the design of such devices, such as the possibility of mutual interference between electrical components, the scanner field, and radio frequency pulses, and the physical space restrictions of the scanner bore. This paper presents a review of the current solutions that have been developed for MRE devices giving particular consideration to the design criteria including the required vibration frequency and amplitude in different applications, the issue of MR compatibility, actuation principles, design complexity, and scanner synchronization issues. The future challenges in this field are also described. PMID:19499839

Tse, Z T H; Janssen, H; Hamed, A; Ristic, M; Young, I; Lamperth, M

2009-05-01

64

Communication--On Analyzing Survey Data for Journal Design  

Microsoft Academic Search

Cattin [Cattin, P. Comment on designing scientific journals. Management Sci. 25 (3) 295-296.] makes an interesting point in that the unstandardized comparisons made in King, Kilmann and Sochats [King, W. R., Kilmann, R. H., Sochats, K. 1978. Designing scientific journals: issues and survey results. Management Sci. 24 (7, March) 774-784.] do not account for possible response bias or for the

William R. King; Ralph H. Kilmann; Kenneth Sochats

1979-01-01

65

Mobile Libraries, Design and Construction: A Survey of Current Practice.  

ERIC Educational Resources Information Center

Forty-one country libraries in Wales, Scotland and England were surveyed in 1970 in an attempt to establish current practice in the design and construction of mobile libraries. This report is the first step of the Branch and Mobile Libraries Group of the Library Association to establish standards for mobile library design and construction. The…

Eastwood, C. R.; And Others

66

The Design Space of Implicit Hierarchy Visualization: A Survey  

Microsoft Academic Search

Apart from explicit node-link representations, implicit visualizations and especially the Treemap as their frontrunner have acquired a solid position among the available techniques to visualize hierarchies. Their advantage is a highly space-efficient graphical representation that does not require explicit drawing of edges. In this paper, we survey the design space for this class of visualization techniques. We establish the design

Hans-Jörg Schulz; Steffen Hadlak; Heidrun Schumann

2011-01-01

67

Sample Design: Third National Health and Nutrition Examination Survey.  

National Technical Information Service (NTIS)

The report presents a detailed description of the sample design for the Third National Health and Nutrition Examination Survey, 1988-94, including a brief description of research that led to the choice of the final design. The National Health and Nutritio...

T. M. Ezzati J. T. Massey J. Waksberg A. Chu K. R. Maurer

1992-01-01

68

A quantitative approach to nonlinear IC process design rule scaling  

NASA Astrophysics Data System (ADS)

As minimum dimensions in integrated circuit technologies are reduced beyond 0.1 m m, linear process scaling becomes more difficult and costly. Exponentially rising manufacturing facility and process scaling costs can be better managed by performing nonlinear process shrinks. Nonlinear scaling allows the horizontal design rules to be reduced by different factors according to their ability to provide area and performance improvement in a cost effective manner. This thesis describes a methodology and CAD tools for use in selecting nonlinear design rule reduction ratios that make effective tradeoffs between die cost and performance. The cost effectiveness of nonlinear scaling is demonstrated for a complementary GaAs (CGaAsTM) process. CGaAs is a young technology with coarse design rules that would benefit significantly from a nonlinear shrink. The cost/benefit analysis for scaling the design rules is based on a process-independent optimizing SRAM compiler which was developed as part of this work. The methodology for nonlinear scaling includes identifying the rules which have the greatest impact on circuit area and analyzing the area and performance improvements as these rules are scaled through a range of practical scale factors. Benefit data (product of power and delay improvement ratios) is then combined with die cost estimates at each step to yield the cost/benefit ratio, a quantitative metric for design rule reduction. The slopes and inflection points of cost/benefit vs. scale factor plots guide process engineers in selecting reduction ratios for the various design rules. This procedure should be repeated, using the results of one pass as the starting point for the next. The cost/benefit analysis methodology compares embedded static RAMs that are generated by the PUMA process-independent SRAM compiler. This compiler, which is based on Duet's MasterPortTM layout compactor, can create optimized SRAM cell libraries for any complementary technology. It is capable of exploring a large design space, including the ability to adjust the transistors within the six-transistor memory cell. It produces power-delay curves that are combined with SRAM area measurements to provide the power, delay, and area data required for a cost/benefit analysis. A 0.5 m m CGaAs process is analyzed to demonstrate the methodology. A cost/benefit analysis of the design rules shows that the first scaling step should include a reduction of at least four rules: minimum transistor width, source/drain ohmic width, ohmic contact width, and active overlap of contact. The proportion by which these rules should be reduced depends on the number of wafers over which the scaling costs are amortized, and ranges from 20 to 40%. A similar analysis of the effect of transistor threshold voltage reduction clearly showed diminishing cost/benefit and cost/delay returns for an embedded SRAM.

Gold, Spencer Montgomery

69

Database design and implementation for quantitative image analysis research  

Microsoft Academic Search

Quantitative image analysis (QIA) goes beyond sub- jective visual assessment to provide computer measurements of the image content, typically following image segmentation to iden- tify anatomical regions of interest (ROIs). Commercially available picture archiving and communication systems focus on storage of image data. They are not well suited to efficient storage and mining of new types of quantitative data. In

Matthew S. Brown; Sumit K. Shah; Richard C. Pais; Yeng-zhong Lee; Michael F. Mcnitt-gray; Jonathan G. Goldin; Alfonso F. Cardenas; Denise R. Aberle

2005-01-01

70

A Successful Broadband Survey for Giant Ly? Nebulae. I. Survey Design and Candidate Selection  

NASA Astrophysics Data System (ADS)

Giant Ly? nebulae (or Ly? "blobs") are likely sites of ongoing massive galaxy formation, but the rarity of these powerful sources has made it difficult to form a coherent picture of their properties, ionization mechanisms, and space density. Systematic narrowband Ly? nebula surveys are ongoing, but the small redshift range covered and the observational expense limit the comoving volume that can be probed by even the largest of these surveys and pose a significant problem when searching for such rare sources. We have developed a systematic search technique designed to find large Ly? nebulae at 2 <~ z <~ 3 within deep broadband imaging and have carried out a survey of the 9.4 deg2 NOAO Deep Wide-Field Survey Boötes field. With a total survey comoving volume of ?108 h -3 70 Mpc3, this is the largest volume survey for Ly? nebulae ever undertaken. In this first paper in the series, we present the details of the survey design and a systematically selected sample of 79 candidates, which includes one previously discovered Ly? nebula.

Prescott, Moire K. M.; Dey, Arjun; Jannuzi, Buell T.

2012-04-01

71

23 CFR 1340.10 - Submission and approval of seat belt survey design.  

Code of Federal Regulations, 2013 CFR

...false Submission and approval of seat belt survey design. 1340.10 Section...FOR STATE OBSERVATIONAL SURVEYS OF SEAT BELT USE Administrative Requirements...10 Submission and approval of seat belt survey design. (a)...

2013-04-01

72

Mobile Libraries, Design and Construction: A Survey of Current Practice.  

National Technical Information Service (NTIS)

Forty-one country libraries in Wales, Scotland and England were surveyed in 1970 in an attempt to establish current practice in the design and construction of mobile libraries. This report is the first step of the Branch and Mobile Libraries Group of the ...

C. R. Eastwood

1971-01-01

73

Microstructure Sensitive Design: A Quantitative Approach to New Materials Development.  

National Technical Information Service (NTIS)

The central goal of the project is to develop a new spectral method for design of polycrystalline materials. The methodology (MSD) differs from other materials design approaches in that all components of the materials design enterprise are communicated in...

B. L. Adams S. R. Kalidindi

2005-01-01

74

Designing nursing research: the qualitative-quantitative debate.  

PubMed

Nursing research has not evolved with immunity from the qualitative-quantitative debate which has surrounded the behavioural and social sciences. The outcome of this debate should be better nursing science since researchers are forced to face and address the controversial issues. Attaining this goal requires researchers to debate the issues with a knowledge of epistemology and methodology and not blind devotion to the tradition of the hard sciences. This paper addresses the issues of epistemology, methodology, and ethics for two prototypes of the qualitative-quantitative continuum. Grounded theory explains the issues of qualitative research: the search for meaning, the inclusion of environmental factors, the depth of data, and the treatment of participants as subjects. The true experiment, the epitomy of the quantitative approach, seeks to identify existing truths by isolating the significant variables and controlling for contaminating factors. Based on these arguments, recommendations are made for nursing research which rely on both approaches. PMID:3848448

Duffy, M E

1985-05-01

75

A survey of bio-inspired compliant legged robot designs.  

PubMed

The roles of biological springs in vertebrate animals and their implementations in compliant legged robots offer significant advantages over the rigid legged ones in certain types of scenarios. A large number of robotics institutes have been attempting to work in conjunction with biologists and incorporated these principles into the design of biologically inspired robots. The motivation of this review is to investigate the most published compliant legged robots and categorize them according to the types of compliant elements adopted in their mechanical structures. Based on the typical robots investigated, the trade-off between each category is summarized. In addition, the most significant performances of these robots are compared quantitatively, and multiple available solutions for the future compliant legged robot design are suggested. Finally, the design challenges for compliant legged robots are analysed. This review will provide useful guidance for robotic designers in creating new designs by inheriting the virtues of those successful robots according to the specific tasks. PMID:23151609

Zhou, Xiaodong; Bi, Shusheng

2012-11-14

76

Assessing usual dietary intake in complex sample design surveys: the National Dietary Survey.  

PubMed

The National Cancer Institute (NCI) method allows the distributions of usual intake of nutrients and foods to be estimated. This method can be used in complex surveys. However, the user must perform additional calculations, such as balanced repeated replication (BRR), in order to obtain standard errors and confidence intervals for the percentiles and mean from the distribution of usual intake. The objective is to highlight adaptations of the NCI method using data from the National Dietary Survey. The application of the NCI method was exemplified analyzing the total energy (kcal) and fruit (g) intake, comparing estimations of mean and standard deviation that were based on the complex design of the Brazilian survey with those assuming simple random sample. Although means point estimates were similar, estimates of standard error using the complex design increased by up to 60% compared to simple random sample. Thus, for valid estimates of food and energy intake for the population, all of the sampling characteristics of the surveys should be taken into account because when these characteristics are neglected, statistical analysis may produce underestimated standard errors that would compromise the results and the conclusions of the survey. PMID:23703261

Barbosa, Flávia dos Santos; Sichieri, Rosely; Junger, Washington Leite

2013-02-01

77

Design and Optimization of Reverse-Transcription Quantitative PCR Experiments  

Microsoft Academic Search

BACKGROUND: Quantitative PCR (qPCR) is a valuable technique for accurately and reliably profiling and quantifying gene expression. Typically, samples ob- tainedfromtheorganismofstudyhavetobeprocessed via several preparative steps before qPCR. METHOD: We estimated the errors of sample with- drawal and extraction, reverse transcription (RT), and qPCR that are introduced into measurements of mRNA concentrations. We performed hierarchically arranged experiments with 3 animals, 3

Ales Tichopad; Rob Kitchen; Irmgard Riedmaier; Christiane Becker; Anders Ståhlberg; Mikael Kubista

2009-01-01

78

Current State of Agile User-Centered Design: A Survey  

Microsoft Academic Search

Agile software development methods are quite popular nowadays and are being adopted at an increasing rate in the industry\\u000a every year. However, these methods are still lacking usability awareness in their development lifecycle, and the integration\\u000a of usability\\/User-Centered Design (UCD) into agile methods is not adequately addressed. This paper presents the preliminary\\u000a results of a recently conducted online survey regarding

Zahid Hussain; Wolfgang Slany; Andreas Holzinger

2009-01-01

79

New journal selection for quantitative survey of infectious disease research: application for Asian trend analysis  

PubMed Central

Background Quantitative survey of research articles, as an application of bibliometrics, is an effective tool for grasping overall trends in various medical research fields. This type of survey has been also applied to infectious disease research; however, previous studies were insufficient as they underestimated articles published in non-English or regional journals. Methods Using a combination of Scopus™ and PubMed, the databases of scientific literature, and English and non-English keywords directly linked to infectious disease control, we identified international and regional infectious disease journals. In order to ascertain whether the newly selected journals were appropriate to survey a wide range of research articles, we compared the number of original articles and reviews registered in the selected journals to those in the 'Infectious Disease Category' of the Science Citation Index Expanded™ (SCI Infectious Disease Category) during 1998-2006. Subsequently, we applied the newly selected journals to survey the number of original articles and reviews originating from 11 Asian countries during the same period. Results One hundred journals, written in English or 7 non-English languages, were newly selected as infectious disease journals. The journals published 14,156 original articles and reviews of Asian origin and 118,158 throughout the world, more than those registered in the SCI Infectious Disease Category (4,621 of Asian origin and 66,518 of the world in the category). In Asian trend analysis of the 100 journals, Japan had the highest percentage of original articles and reviews in the area, and no noticeable increase in articles was revealed during the study period. China, India and Taiwan had relatively large numbers and a high increase rate of original articles among Asian countries. When adjusting the publication of original articles according to the country population and the gross domestic product (GDP), Singapore and Taiwan were the most productive. Conclusion A survey of 100 selected journals is more sensitive than the SCI Infectious Disease Category from the viewpoint of avoiding underestimating the number of infectious disease research articles of Asian origin. The survey method is applicable to grasp global trends in disease research, although the method may require further development.

2009-01-01

80

Patient safety begins with proper planning: a quantitative method to improve hospital design  

Microsoft Academic Search

BackgroundA quantitative methodology that enhances design of patient-safe healthcare facilities is presented. The prevailing paradigm of evaluating the design of healthcare facilities relies mainly on postconstruction criticism of design flaws; by then, design flaws may have already negatively affected patient safety. The methodology presented here utilises simulation-based testing in real-size replicas of proposed hospital designs. Other simulations to assess design

D. J. Birnbach; I. Nevo; S. R. Scheinman; M. Fitzpatrick; I. Shekhter; J. L. Lombard

2010-01-01

81

A control design for a tracked vehicle with implicit nonlinearities using quantitative feedback theory  

Microsoft Academic Search

A vehicle speed-control system is developed for the M113 tracked vehicle. Because the nonlinearities involved are implicit in the model, it is difficult to apply most currently available techniques. However, quantitative feedback theory (QFT) offers an alternative solution to this complex control design problem. The main idea of QFT nonlinear control design is to design one robust controller for an

G. G. Wang; I. Horowitz; S. H. Wang; C. W. Chen

1988-01-01

82

SEDS: The Spitzer Extended Deep Survey. Survey Design, Photometry, and Deep IRAC Source Counts  

NASA Astrophysics Data System (ADS)

The Spitzer Extended Deep Survey (SEDS) is a very deep infrared survey within five well-known extragalactic science fields: the UKIDSS Ultra-Deep Survey, the Extended Chandra Deep Field South, COSMOS, the Hubble Deep Field North, and the Extended Groth Strip. SEDS covers a total area of 1.46 deg2 to a depth of 26 AB mag (3?) in both of the warm Infrared Array Camera (IRAC) bands at 3.6 and 4.5 ?m. Because of its uniform depth of coverage in so many widely-separated fields, SEDS is subject to roughly 25% smaller errors due to cosmic variance than a single-field survey of the same size. SEDS was designed to detect and characterize galaxies from intermediate to high redshifts (z = 2-7) with a built-in means of assessing the impact of cosmic variance on the individual fields. Because the full SEDS depth was accumulated in at least three separate visits to each field, typically with six-month intervals between visits, SEDS also furnishes an opportunity to assess the infrared variability of faint objects. This paper describes the SEDS survey design, processing, and publicly-available data products. Deep IRAC counts for the more than 300,000 galaxies detected by SEDS are consistent with models based on known galaxy populations. Discrete IRAC sources contribute 5.6 ± 1.0 and 4.4 ± 0.8 nW m-2 sr-1 at 3.6 and 4.5 ?m to the diffuse cosmic infrared background (CIB). IRAC sources cannot contribute more than half of the total CIB flux estimated from DIRBE data. Barring an unexpected error in the DIRBE flux estimates, half the CIB flux must therefore come from a diffuse component.

Ashby, M. L. N.; Willner, S. P.; Fazio, G. G.; Huang, J.-S.; Arendt, R.; Barmby, P.; Barro, G.; Bell, E. F.; Bouwens, R.; Cattaneo, A.; Croton, D.; Davé, R.; Dunlop, J. S.; Egami, E.; Faber, S.; Finlator, K.; Grogin, N. A.; Guhathakurta, P.; Hernquist, L.; Hora, J. L.; Illingworth, G.; Kashlinsky, A.; Koekemoer, A. M.; Koo, D. C.; Labbé, I.; Li, Y.; Lin, L.; Moseley, H.; Nandra, K.; Newman, J.; Noeske, K.; Ouchi, M.; Peth, M.; Rigopoulou, D.; Robertson, B.; Sarajedini, V.; Simard, L.; Smith, H. A.; Wang, Z.; Wechsler, R.; Weiner, B.; Wilson, G.; Wuyts, S.; Yamada, T.; Yan, H.

2013-05-01

83

Estimation and sample design in prevalence surveys of dementia.  

PubMed

Population prevalence rates of dementia using stratified sampling have previously been estimated using two methods: standard weighted estimates and a logistic model-based approach. An earlier study described this application of the model-based approach and reported a small computer simulation comparing the performance of this estimator to the standard weighted estimator. In this article we use large-scale computer simulations based on data from the recently completed Kame survey of prevalent dementia in the Japanese-American residents of King County, Washington, to describe the performance of these estimators. We found that the standard weighted estimator was unbiased. This estimator performed well for a sample design with proportional allocation, but performed poorly for a sample design that included large strata that were lightly sampled. The logistic model-based estimator performed consistently well for all sample designs considered in terms of the extent of variability in estimation, although some modest bias was observed. PMID:10360334

Edland, S D; Graves, A B; McCormick, W C; Larson, E B

1999-05-01

84

Questionnaire survey of physicians: Design and practical use in nephrology  

PubMed Central

As medicine grows in complexity, it is imperative for physicians to update their knowledge base and practice to reflect current standards of care. Postgraduate training offers a golden opportunity for resident physicians to create a strong foundation of concepts in medicine. There is a need for assessing the knowledge of residents regarding established clinical practice guidelines and their perceptions regarding patient care and management. In this paper, we review how questionnaire surveys can be designed and applied to identify significant gaps in resident knowledge and inappropriate attitudes and beliefs. This evaluation has important implications for program directors who can then initiate measures to improve resident education. Such efforts during residency training have the potential of improving patient outcomes. We discuss the design of the questionnaire, its pre-testing and validity measures, online distribution, efficient response collection, data analysis, and possible future research. Finally, we illustrate this method of educational research with a questionnaire survey designed to measure the awareness of chronic kidney disease among internal medicine residents.

Agrawal, Varun; Garimella, P. S.; Roshan, S. J.; Ghosh, A. K.

2009-01-01

85

Quantitative Feedback Contribution to Design of Voltage Regulator Modules  

Microsoft Academic Search

This work presents a new design method suitable for voltage regulator modules (VRM) requirements. The new method takes into account system uncertainty and it could be easily adapted to new requirements from the industry. The limitations of voltage and current modes to match the output impedance requirement are derived while the measurement of load current is found to be a

Carlos Olalla; Ramon Leyva; Abdelali El Aroudi; Isabelle Queinnec

2007-01-01

86

Design of a lightweight, low-cost geophysical survey vehicle  

SciTech Connect

A remote-controlled vehicle has been designed at Pacific Northwest Laboratory for surveying sites that are dangerous for manned vehicles. The vehicle is required to be small, maneuverable, inexpensive, and as free of metallic parts as practicable. The prototype being fabricated will have a mostly aluminum engine, dual bicycle tire wheel assemblies, a two-clutch steering system for selective engagement of pairs of wheels on either side of the vehicle, and radio control with fiber-optic umbilical video link. Wireless control and telemetry are planned for the future. Other future possibilities include a mostly plastic engine and a global positioning system that uses satellite signals. 3 figs.

Ames, K.

1989-03-01

87

Exploring ‘Other’ childhoods through quantitative secondary analyses of large scale surveys: Opportunities and challenges for children's geographers  

Microsoft Academic Search

This paper considers the potential contribution of secondary quantitative analyses of large scale surveys to the investigation of ‘other’ childhoods. Exploring other childhoods involves investigating the experience of young people who are unequally positioned in relation to multiple, embodied, identity locations, such as (dis)ability, ‘class’, gender, sexuality, ethnicity and race. Despite some possible advantages of utilising extensive databases, the paper

Louise Holt

2006-01-01

88

The Large Synoptic Survey Telescope concept design overview  

NASA Astrophysics Data System (ADS)

The Large Synoptic Survey Telescope Project is a public-private partnership that has successfully completed the Concept Design of its wide-field ground based survey system and started several long-lead construction activities using private funding. The telescope has a 3-mirror wide field optical system with an 8.4 meter primary, 3.4 meter secondary, and 5 meter tertiary mirror. The reflective optics feed three refractive elements and a 64 cm 3.2 gigapixel camera. The telescope will be located on the summit of Cerro Pachón in Chile. The LSST data management system will reduce, transport, alert, archive the roughly 15 terabytes of data produced nightly, and will serve the raw and catalog data accumulating at an average of 7 petabytes per year to the community without any proprietary period. This survey will yield contiguous overlapping imaging of 20,000 square degrees of sky in 6 optical filter bands covering wavelengths from 320 to 1080nm. The project continues to attract institutional partners and has acquired non-federal funding sufficient to construct the primary mirror, already in progress at the University of Arizona, and fund detector prototype efforts, two of the longest lead items in the LSST. The project has submitted a proposal for construction to the National Science Foundation Major Research Equipment and Facilities Construction (MREFC) program and is preparing for a 2011 funding authorization.

Krabbendam, Victor L.

2008-08-01

89

Sampling design for the World Health Survey in Brazil.  

PubMed

This paper describes the sample design used in the Brazilian application of the World Health Survey. The sample was selected in three stages. First, the census tracts were allocated in six strata defined by their urban/rural situation and population groups of the municipalities (counties). The tracts were selected using probabilities proportional to the respective number of households. In the second stage, households were selected with equiprobability using an inverse sample design to ensure 20 households interviewed per tract. In the last stage, one adult (18 years or older) per household was selected with equiprobability to answer the majority of the questionnaire. Sample weights were based on the inverse of the inclusion probabilities in the sample. To reduce bias in regional estimates, a household weighting calibration procedure was used to reduce sample bias in relation to income, sex, and age group. PMID:16463000

Vasconcellos, Mauricio Teixeira Leite de; Silva, Pedro Luis do Nascimento; Szwarcwald, Célia Landmann

2006-01-31

90

Improved field experimental designs and quantitative evaluation of aquatic ecosystems  

SciTech Connect

The paired-station concept and a log transformed analysis of variance were used as methods to evaluate zooplankton density data collected during five years at an electrical generation station on Lake Michigan. To discuss the example and the field design necessary for a valid statistical analysis, considerable background is provided on the questions of selecting (1) sampling station pairs, (2) experimentwise error rates for multi-species analyses, (3) levels of Type I and II error rates, (4) procedures for conducting the field monitoring program, and (5) a discussion of the consequences of violating statistical assumptions. Details for estimating sample sizes necessary to detect changes of a specified magnitude are included. Both statistical and biological problems with monitoring programs (as now conducted) are addressed; serial correlation of successive observations in the time series obtained was identified as one principal statistical difficulty. The procedure reduces this problem to a level where statistical methods can be used confidently. 27 references, 4 figures, 2 tables.

McKenzie, D.H.; Thomas, J.M.

1984-05-01

91

The metropolis keyboard - an exploration of quantitative techniques for virtual keyboard design  

Microsoft Academic Search

Text entry user interfaces have been a bottleneck of non - traditional computing devices. One of the promising methods is the virtual keyboard on touch screens. Various layouts have been manually designed to replace the dominant QWERTY layout. This paper presents two computerized quantitative design techniques to search for the optimal virtual keyboard. The first technique simulated the dynamics of

Shumin Zhai; Michael A. Hunter; Barton A. Smith

2000-01-01

92

Methods for Evidence-Based Practice: Quantitative Synthesis of Single-Subject Designs  

ERIC Educational Resources Information Center

|Good quantitative evidence does not require large, aggregate group designs. The authors describe ground-breaking work in managing the conceptual and practical demands in developing meta-analytic strategies for single subject designs in an effort to add to evidence-based practice. (Contains 2 figures.)|

Shadish, William R.; Rindskopf, David M.

2007-01-01

93

Designs for dose-escalation trials with quantitative responses.  

PubMed

In a dose-escalation trial for a new drug, each successive dose is tested on a new cohort of volunteer subjects, so that if any dose produces severe adverse reactions then higher doses are not tested. However, if there are other differences between the cohorts, such as differences in environmental health factors, type of person or experimental procedure, then these differences may obscure the differences between doses. Therefore, cohorts should be fitted in the analysis, as either fixed or random effects. I suggest that, if this is done, then there are three simple principles that reduce variance (i) allocating no more than half the subjects in any cohort to any single dose; (ii) subject to safety constraints, using as many different doses as possible in each cohort; (iii) using one more cohort than the number of doses, without increasing the total number of subjects. Using these principles, I propose some new designs that conform to the safety rules of traditional dose-escalation trials while reducing the variance of the estimators of differences between the doses by a factor of two or more, for the same number of subjects. PMID:19579226

Bailey, R A

2009-12-30

94

Longitudinal Surveys and the Study of Occupational Mobility: Panel and Retrospective Design in Comparison  

Microsoft Academic Search

The paper discusses the extent to which longitudinal surveys are able to expose occupational mobility and the dynamics of these processes. It compares two survey designs: the repeated panel design and the retrospective life history design. This comparison details the strength and the weaknesses of the two designs. The paper particularly calls attention to the unique features of the two

Heike Solga; Max Planck

2001-01-01

95

Hot rocket plume experiment - Survey and conceptual design  

NASA Astrophysics Data System (ADS)

Attention is given to a space-borne engine plume experiment study to fly an experiment which will both verify and quantify the reduced contamination from advanced rhenium-iridium earth-storable bipropellant rockets (hot rockets) and provide a correlation between high-fidelity, in-space measurements and theoretical plume and surface contamination models. The experiment conceptual design is based on survey results from plume and contamination technologists throughout the U.S. With respect to shuttle use, cursory investigations validate Hitchhiker availability and adaptability, adequate remote manipulator system (RMS) articulation and dynamic capability, acceptable RMS attachment capability, adequate power and telemetry capability, and adequate flight altitude and attitude/orbital capability.

Millard, Jerry M.; Luan, Taylor W.; Dowdy, Mack W.

1992-12-01

96

Designing emotionally evocative homepages: an empirical study of the quantitative relations between design factors and emotional dimensions  

Microsoft Academic Search

Emotional aspects of homepages are becoming more important as people spend more time in cyberspace. This research aims to identify quantitative relationships between key design factors and generic dimensions of secondary emotions so that we may develop homepages which target emotions more effectively. In order to achieve this goal, we conducted three related studies. In the first study, we identified

Jinwoo Kim; Jooeun Lee; Dongseong Choi

2003-01-01

97

Variant design for mechanical artifacts: A state-of-the-art survey  

Microsoft Academic Search

Variant design refers, to the technique of adapting existing design specifications to satisfy new design goals and constraints. Specific support of variant design techniques in current computer aided design systems would help to realize a rapid response manufacturing environment. A survey of approaches supporting variant design is presented. Capabilities used in current commercial computer aided design systems are discussed along

James E. Fowler

1996-01-01

98

The SCUBA Half-Degree Extragalactic Survey - I. Survey motivation, design and data processing  

NASA Astrophysics Data System (ADS)

The Submillimetre Common-User Bolometer Array (SCUBA) Half-Degree Extragalactic Survey (SHADES) is a major new blank-field extragalactic submillimetre (submm) survey currently underway at the James Clerk Maxwell Telescope (JCMT). Ultimately, SHADES aims to cover half a square degree at 450 and 850?m to a 4? depth of ~= 8mJy at 850?m. Two fields are being observed, the Subaru/XMM-Newton Deep Field (SXDF) (02h18m- 05°) and the Lockman Hole East (10h52m+ 57°). The survey has three main aims: (i) to investigate the population of high-redshift submm galaxies and the cosmic history of massive dust-enshrouded star formation activity; (ii) to investigate the clustering properties of submm-selected galaxies in order to determine whether these objects could be progenitors of present-day massive ellipticals; and (iii) to investigate the fraction of submm-selected sources that harbour active galactic nuclei. To achieve these aims requires that the submm data be combined with co-spatial information spanning the radio-to-X-ray frequency range. Accordingly, SHADES has been designed to benefit from ultra-deep radio imaging obtained with the Very Large Array (VLA), deep mid-infrared observations from the Spitzer Space Telescope, submm mapping by the Balloon-borne Large Aperture Submillimetre Telescope (BLAST), deep near-infrared imaging with the United Kingdom Infrared Telescope, deep optical imaging with the Subaru Telescope and deep X-ray observations with the XMM-Newton observatory. It is expected that the resulting extensive multiwavelength data set will provide complete photometric redshift information accurate to as well as detailed spectral energy distributions for the vast majority of the submm-selected sources. In this paper, the first of a series on SHADES, we present an overview of the motivation for the survey, describe the SHADES survey strategy, provide a detailed description of the primary data-analysis pipeline and demonstrate the superiority of our adopted matched-filter source-extraction technique over, for example, Emerson-II style methods. We also report on the progress of the survey. As of 2004 February, 720arcmin2 had been mapped with SCUBA (about 40 per cent of the anticipated final total area) to a median 1? depth of 2.2mJy per beam at 850?m (25mJy per beam at 450?m), and the source-extraction routines give a source density of 650 +/- 50 sources deg-2 > 3? at 850?m. Although uncorrected for Eddington bias, this source density is more than sufficient for providing enough sources to answer the science goals of SHADES, once half a square degree is observed. A refined reanalysis of the original 8-mJy survey Lockman hole data was carried out in order to evaluate the new data-reduction pipeline. Of the 17 most secure sources in the original sample, 12 have been reconfirmed, including 10 of the 11 for which radio identifications were previously secured.

Mortier, A. M. J.; Serjeant, S.; Dunlop, J. S.; Scott, S. E.; Ade, P.; Alexander, D.; Almaini, O.; Aretxaga, I.; Baugh, C.; Benson, A. J.; Best, P. N.; Blain, A.; Bock, J.; Borys, C.; Bressan, A.; Carilli, C.; Chapin, E. L.; Chapman, S.; Clements, D. L.; Coppin, K.; Crawford, M.; Devlin, M.; Dicker, S.; Dunne, L.; Eales, S. A.; Edge, A. C.; Farrah, D.; Fox, M.; Frenk, C.; Gaztañaga, E.; Gear, W. K.; Gonzales-Solares, E.; Granato, G. L.; Greve, T. R.; Grimes, J. A.; Gundersen, J.; Halpern, M.; Hargrave, P.; Hughes, D. H.; Ivison, R. J.; Jarvis, M. J.; Jenness, T.; Jimenez, R.; van Kampen, E.; King, A.; Lacey, C.; Lawrence, A.; Lepage, K.; Mann, R. G.; Marsden, G.; Mauskopf, P.; Netterfield, B.; Oliver, S.; Olmi, L.; Page, M. J.; Peacock, J. A.; Pearson, C. P.; Percival, W. J.; Pope, A.; Priddey, R. S.; Rawlings, S.; Roche, N.; Rowan-Robinson, M.; Scott, D.; Sekiguchi, K.; Seigar, M.; Silva, L.; Simpson, C.; Smail, I.; Stevens, J. A.; Takagi, T.; Tucker, G.; Vlahakis, C.; Waddington, I.; Wagg, J.; Watson, M.; Willott, C.; Vaccari, M.

2005-10-01

99

Current State of Agile User-Centered Design: A Survey  

NASA Astrophysics Data System (ADS)

Agile software development methods are quite popular nowadays and are being adopted at an increasing rate in the industry every year. However, these methods are still lacking usability awareness in their development lifecycle, and the integration of usability/User-Centered Design (UCD) into agile methods is not adequately addressed. This paper presents the preliminary results of a recently conducted online survey regarding the current state of the integration of agile methods and usability/UCD. A world wide response of 92 practitioners was received. The results show that the majority of practitioners perceive that the integration of agile methods with usability/UCD has added value to their adopted processes and to their teams; has resulted in the improvement of usability and quality of the product developed; and has increased the satisfaction of the end-users of the product developed. The top most used HCI techniques are low-fidelity prototyping, conceptual designs, observational studies of users, usability expert evaluations, field studies, personas, rapid iterative testing, and laboratory usability testing.

Hussain, Zahid; Slany, Wolfgang; Holzinger, Andreas

100

Linking qualitative and quantitative methods in cross-cultural survey research: Techniques from cognitive science  

Microsoft Academic Search

Survey research with diverse cultural and ethnic minority groups is a complex and challenging endeavor that confronts the researcher with problems related to linguistic and conceptual equivalence and measurement as well as problems related to difficulties that respondents have with the sociocultural dimensions of the survey\\/interview process. One way to improve the quality of cross-cultural surveys and to insure that

Alice M. Hines

1993-01-01

101

50 CFR 600.1417 - Requirements for exempted state designation based on submission of recreational survey data.  

Code of Federal Regulations, 2010 CFR

...fishing effort; (3) Utilize angler registry data to identify individuals to be surveyed by telephone, if such regional survey includes a telephone survey component; and (4) Meet NMFS survey design and data collection...

2010-10-01

102

50 CFR 600.1417 - Requirements for exempted state designation based on submission of recreational survey data.  

Code of Federal Regulations, 2010 CFR

...fishing effort; (3) Utilize angler registry data to identify individuals to be surveyed by telephone, if such regional survey includes a telephone survey component; and (4) Meet NMFS survey design and data collection...

2009-10-01

103

Curriculum Design of Computer Graphics Programs: A Survey of Art/Design Programs at the University Level.  

ERIC Educational Resources Information Center

|This master's thesis reports the results of a survey submitted to over 30 colleges and universities that currently offer computer graphics courses or are in the planning stage of curriculum design. Intended to provide a profile of the computer graphics programs and insight into the process of curriculum design, the survey gathered data on program…

McKee, Richard Lee

104

Quantitative design of regulatory elements based on high-precision strength prediction using artificial neural network.  

PubMed

Accurate and controllable regulatory elements such as promoters and ribosome binding sites (RBSs) are indispensable tools to quantitatively regulate gene expression for rational pathway engineering. Therefore, de novo designing regulatory elements is brought back to the forefront of synthetic biology research. Here we developed a quantitative design method for regulatory elements based on strength prediction using artificial neural network (ANN). One hundred mutated Trc promoter & RBS sequences, which were finely characterized with a strength distribution from 0 to 3.559 (relative to the strength of the original sequence which was defined as 1), were used for model training and test. A precise strength prediction model, NET90_19_576, was finally constructed with high regression correlation coefficients of 0.98 for both model training and test. Sixteen artificial elements were in silico designed using this model. All of them were proved to have good consistency between the measured strength and our desired strength. The functional reliability of the designed elements was validated in two different genetic contexts. The designed parts were successfully utilized to improve the expression of BmK1 peptide toxin and fine-tune deoxy-xylulose phosphate pathway in Escherichia coli. Our results demonstrate that the methodology based on ANN model can de novo and quantitatively design regulatory elements with desired strengths, which are of great importance for synthetic biology applications. PMID:23560087

Meng, Hailin; Wang, Jianfeng; Xiong, Zhiqiang; Xu, Feng; Zhao, Guoping; Wang, Yong

2013-04-01

105

Textile materials for the design of wearable antennas: a survey.  

PubMed

In the broad context of Wireless Body Sensor Networks for healthcare and pervasive applications, the design of wearable antennas offers the possibility of ubiquitous monitoring, communication and energy harvesting and storage. Specific requirements for wearable antennas are a planar structure and flexible construction materials. Several properties of the materials influence the behaviour of the antenna. For instance, the bandwidth and the efficiency of a planar microstrip antenna are mainly determined by the permittivity and the thickness of the substrate. The use of textiles in wearable antennas requires the characterization of their properties. Specific electrical conductive textiles are available on the market and have been successfully used. Ordinary textile fabrics have been used as substrates. However, little information can be found on the electromagnetic properties of regular textiles. Therefore this paper is mainly focused on the analysis of the dielectric properties of normal fabrics. In general, textiles present a very low dielectric constant that reduces the surface wave losses and increases the impedance bandwidth of the antenna. However, textile materials are constantly exchanging water molecules with the surroundings, which affects their electromagnetic properties. In addition, textile fabrics are porous, anisotropic and compressible materials whose thickness and density might change with low pressures. Therefore it is important to know how these characteristics influence the behaviour of the antenna in order to minimize unwanted effects. This paper presents a survey of the key points for the design and development of textile antennas, from the choice of the textile materials to the framing of the antenna. An analysis of the textile materials that have been used is also presented. PMID:23202235

Salvado, Rita; Loss, Caroline; Gonçalves, Ricardo; Pinho, Pedro

2012-11-15

106

Survey on surgical instrument handle design: ergonomics and acceptance.  

PubMed

Minimally invasive surgical approaches have revolutionized surgical care and considerably improved surgical outcomes. The instrumentation has changed significantly from open to laparoscopic and robotic surgery with various usability and ergonomics qualities. To establish guidelines for future designing of surgical instruments, this study assesses the effects of current surgical approaches and instruments on the surgeon. Furthermore, an analysis of surgeons' preferences with respect to instrument handles was performed to identify the main acceptance criteria. In all, 49 surgeons (24 with robotic surgery experience, 25 without) completed the survey about physical discomfort and working conditions. The respondents evaluated comfort, intuitiveness, precision, and stability of 7 instrument handles. Robotic surgery procedures generally take a longer time than conventional procedures but result in less back, shoulder, and wrist pain; 28% of surgeons complained about finger and neck pain during robotic surgery. Three handles (conventional needle holder, da Vinci wrist, and joystick-like handle) received significantly higher scores for most of the proposed criteria. The handle preference is best explained by a regression model related only to comfort and precision (R(2) = 0.91) and is significantly affected by the surgeon's background (P < .001). Although robotic surgery seems to alleviate physical discomfort during and after surgery, the results of this study show that there is room for improvement in the sitting posture and in the ergonomics of the handles. Comfort and precision have been found to be the most important aspects for the surgeon's choice of an instrument handle. Furthermore, surgeons' professional background should be considered when designing novel surgical instruments. PMID:21868419

Santos-Carreras, Laura; Hagen, Monika; Gassert, Roger; Bleuler, Hannes

2011-08-25

107

National Aquatic Resource Surveys: Integration of Geospatial Data in Their Survey Design and Analysis  

EPA Science Inventory

The National Aquatic Resource Surveys (NARS) are a series of four statistical surveys conducted by the U.S. Environmental Protection Agency working in collaboration with states, tribal nations and other federal agencies. The surveys are conducted for lakes and reservoirs, streams...

108

Findings from a survey on the current use of daylight simulations in building design  

Microsoft Academic Search

This paper presents findings from a web-based survey on the current use of daylight simulations in building design. The survey was administered from December 2nd 2003 to January 19th 2004. One hundred and eighty five individuals from 27 countries completed the survey. The majority of respondents worked in Canada (20%), the United States (20%), and Germany (12%). Most participants were

Christoph Reinhart; Annegret Fitz

2006-01-01

109

Design criteria and accuracy specifications for precise large-scale topographic surveys from sparse data sets  

Microsoft Academic Search

The purpose of this research is to develop design and accuracy criteria for large-scale topographic surveys. The large-scale topographic survey is a ‘sparse surface model’ consisting of sampling prescription, surface modeling algorithm, and partitioned terrain complexity. Predictable survey outcomes can be achieved by partitioning the site into unitary land forms such that the amplitude of resident terrain microform is less

James Arthur Elithorp

1999-01-01

110

Design database for quantitative trait loci (QTL) data warehouse, data mining, and meta-analysis.  

PubMed

A database can be used to warehouse quantitative trait loci (QTL) data from multiple sources for comparison, genomic data mining, and meta-analysis. A robust database design involves sound data structure logistics, meaningful data transformations, normalization, and proper user interface designs. This chapter starts with a brief review of relational database basics and concentrates on issues associated with curation of QTL data into a relational database, with emphasis on the principles of data normalization and structure optimization. In addition, some simple examples of QTL data mining and meta-analysis are included. These examples are provided to help readers better understand the potential and importance of sound database design. PMID:22565835

Hu, Zhi-Liang; Reecy, James M; Wu, Xiao-Lin

2012-01-01

111

Multidisciplinary aerospace design optimization: survey of recent developments  

Microsoft Academic Search

The increasing complexity of engineering systems has sparked rising interest in multidisciplinary optimization (MDO). This paper surveys recent publications in the field of aerospace, in which the interest in MDO has been particularly intense. The primary c hallenges in MDO are computational expense and organizational complexity. Accordingly, this survey focuses on various methods used by different researchers to address these

Jaroslaw Sobieszczanski-Sobieski; Raphael T. Haftka

1997-01-01

112

23 CFR 1340.11 - Post-approval alterations to survey design.  

Code of Federal Regulations, 2013 CFR

... UNIFORM CRITERIA FOR STATE OBSERVATIONAL SURVEYS OF SEAT BELT USE Administrative Requirements § 1340.11 Post-approval...design, including, but not limited to, sample design, seat belt use rate estimation method, variance estimation...

2013-04-01

113

The LEGUE high latitude bright survey design for the LAMOST pilot survey  

NASA Astrophysics Data System (ADS)

We describe the footprint and input catalog for bright nights in the LAMOST Pilot Survey, which began in October 2011. Targets are selected from two stripes in the north and south Galactic Cap regions, centered at ? = 29°, with 10° width in declination, covering right ascensions of 135° to 290° and -30° to 30° respectively. We selected spectroscopic targets from a combination of the SDSS and 2MASS point source catalogs. The catalog of stars defining the field centers (as required by the Shack-Hartmann wavefront sensor at the center of the LAMOST field) consists of all V < 8m stars from the Hipparcos catalog. We employ a statistical selection algorithm that assigns priorities to targets based on their positions in multidimensional color/magnitude space. This scheme overemphasizes rare objects and de-emphasizes more populated regions of magnitude and color phase space, while ensuring a smooth, well-understood selection function. A demonstration of plate design is presented based on the Shack-Hartmann star catalog and an input catalog that was generated by our target selection routines.

Zhang, Yue-Yang; Carlin, Jeffrey L.; Yang, Fan; Liu, Chao; Deng, Li-Cai; Newberg, Heidi Jo; Zhang, Hao-Tong; Lépine, Sébastien; Xu, Yan; Gao, Shuang; Christlieb, Norbert; Han, Zhan-Wen; Hou, Jin-Liang; Lee, Hsu-Tai; Liu, Xiao-Wei; Pan, Kai-Ke; Wang, Hong-Chi

2012-07-01

114

A survey report for the design of biped locomotion robot: The WL-12 (Waseda Leg-12)  

NASA Astrophysics Data System (ADS)

A mechanical design study of biped locomotion robots is going on at JAERI within the scope of the Human Acts Simulation Program (HASP). The design study at JAERI is of an arbitrarily mobile robot for inspection of nuclear facilities. A survey has been performed for collecting useful information from already existing biped locomotion robots. This is a survey report of the biped locomotion robot: the WL-12 designed and developed at Waseda University. This report includes the mechanical model and control system designs.

Takanishi, Atsuo; Kato, Ichiro; Kume, Etsuo

1991-11-01

115

The WiggleZ Dark Energy Survey: survey design and first data release  

Microsoft Academic Search

The WiggleZ Dark Energy Survey is a survey of 240000 emission-line galaxies in the distant Universe, measured with the AAOmega spectrograph on the 3.9-m Anglo-Australian Telescope (AAT). The primary aim of the survey is to precisely measure the scale of baryon acoustic oscillations (BAO) imprinted on the spatial distribution of these galaxies at look-back times of 4-8Gyr. The target galaxies

Michael J. Drinkwater; Russell J. Jurek; Chris Blake; David Woods; Kevin A. Pimbblet; Karl Glazebrook; Rob Sharp; Michael B. Pracy; Sarah Brough; Matthew Colless; Warrick J. Couch; Scott M. Croom; Tamara M. Davis; Duncan Forbes; Karl Forster; David G. Gilbank; Michael Gladders; Ben Jelliffe; Nick Jones; I.-Hui Li; Barry Madore; D. Christopher Martin; Gregory B. Poole; Todd Small; Emily Wisnioski; Ted Wyder; H. K. C. Yee

2010-01-01

116

New facility design and work method for the quantitative fit testing laboratory. Master's thesis  

SciTech Connect

The United States Air Force School of Aerospace Medicine (USAFSAM) tests the quantitative fit of masks which are worn by military personnel during nuclear, biological, and chemical warfare. Subjects are placed in a Dynatech-Frontier Fit Testing Chamber, salt air is fed into the chamber, and samples of air are drawn from the mask and the chamber. The ratio of salt air outside the mask to salt air inside the mask is called the quantitative fit factor. A motion-time study was conducted to evaluate the efficiency of the layout and work method presently used in the laboratory. A link analysis was done to determine equipment priorities, and the link data and design guidelines were used to develop three proposed laboratory designs. The proposals were evaluated by projecting the time and motion efficiency, and the energy expended working in each design. Also evaluated were the lengths of the equipment links for each proposal, and each proposal's adherence to design guidelines. A mock-up was built of the best design proposal, and a second motion-time study was run. Results showed that with the new laboratory and work procedures, the USAFSAM analyst could test 116 more subjects per year than are currently tested. Finally, the results of a questionnaire given to the analyst indicated that user acceptance of the work area improved with the new design.

Ward, G.F.

1989-05-01

117

QuantPrime - a flexible tool for reliable high-throughput primer design for quantitative PCR  

PubMed Central

Background Medium- to large-scale expression profiling using quantitative polymerase chain reaction (qPCR) assays are becoming increasingly important in genomics research. A major bottleneck in experiment preparation is the design of specific primer pairs, where researchers have to make several informed choices, often outside their area of expertise. Using currently available primer design tools, several interactive decisions have to be made, resulting in lengthy design processes with varying qualities of the assays. Results Here we present QuantPrime, an intuitive and user-friendly, fully automated tool for primer pair design in small- to large-scale qPCR analyses. QuantPrime can be used online through the internet or on a local computer after download; it offers design and specificity checking with highly customizable parameters and is ready to use with many publicly available transcriptomes of important higher eukaryotic model organisms and plant crops (currently 295 species in total), while benefiting from exon-intron border and alternative splice variant information in available genome annotations. Experimental results with the model plant Arabidopsis thaliana, the crop Hordeum vulgare and the model green alga Chlamydomonas reinhardtii show success rates of designed primer pairs exceeding 96%. Conclusion QuantPrime constitutes a flexible, fully automated web application for reliable primer design for use in larger qPCR experiments, as proven by experimental data. The flexible framework is also open for simple use in other quantification applications, such as hydrolyzation probe design for qPCR and oligonucleotide probe design for quantitative in situ hybridization. Future suggestions made by users can be easily implemented, thus allowing QuantPrime to be developed into a broad-range platform for the design of RNA expression assays.

Arvidsson, Samuel; Kwasniewski, Miroslaw; Riano-Pachon, Diego Mauricio; Mueller-Roeber, Bernd

2008-01-01

118

On Chip Cache Quantitative Optimization Approach: Study in Chip Multi-processor Design  

Microsoft Academic Search

\\u000a The nanoelectroincs era promotes multi-core processor (or chip multiprocessor, CMP) improvements with a good deal of both\\u000a opportunities and challenges. In CMP systems based on SMP organization, cache is much more important than before because performance\\u000a promoted by multiprocessor is easily degraded by memory latency in shared symmetric multiprocessors. A quantitative optimization\\u000a cache design is presented in SMP based CMP

Chi Zhang; Xiang Wang

2009-01-01

119

A quantitative feedback design for the turning control of a tracked vehicle  

Microsoft Academic Search

A vehicle turning control system is developed; for the M113 tracked vehicle. The vehicle model is nonlinear, parameter varying, and implicit. It is approximated by a set of transfer function matrices. The turning control involves controlling both vehicle linear speed and heading rate by both using the throttle and steering. This is a two-input-two-output control design problem. Using Horowitz' quantitative

G. G. Wang; S. H. Wang; C. W. Chen

1989-01-01

120

ESTIMATING AMPHIBIAN OCCUPANCY RATES IN PONDS UNDER COMPLEX SURVEY DESIGNS  

EPA Science Inventory

Monitoring the occurrence of specific amphibian species in ponds is one component of the US Geological Survey's Amphibian Monitoring and Research Initiative. Two collaborative studies were conducted in Olympic National Park and southeastern region of Oregon. The number of ponds...

121

Ten Years of LibQual: A Study of Qualitative and Quantitative Survey Results at the University of Mississippi 2001-2010  

ERIC Educational Resources Information Center

This article analyzes quantitative adequacy gap scores and coded qualitative comments from LibQual surveys at the University of Mississippi from 2001 to 2010, looking for relationships between library policy changes and LibQual results and any other trends that emerged. Analysis found no relationship between changes in policy and survey results…

Greenwood, Judy T.; Watson, Alex P.; Dennis, Melissa

2011-01-01

122

How many damaged corals in Red Sea reef systems? A quantitative survey  

Microsoft Academic Search

Quantitative coral damage assessment by means of line transects was performed in several northern Red Sea coral reef sites in Israel (Eilat) and Egypt (Hurghada area). Reefs with high and low visitor frequency were compared. For both reef systems, breakage was found to be the most common damage category, being significantly higher on highly frequented reefs. Also, all observed damage

Bernhard Riegl; Branko Velimirov

1991-01-01

123

Survey Design: To Ask or Not to Ask? That is the Question...  

PubMed

Surveys are one of the most frequent modes of observation and measurement. Survey research can be exploratory, descriptive, and/or explanatory. Modes of survey administration vary and include face-to-face, telephone, mail, and Internet. There are numerous considerations that that must be taken into account when designing and conducting a survey. Deciding what information is needed and why is important when developing questions for a survey; it is essential to define the purpose of the survey and to be as specific as possible in terms of the data to be collected. Response rate varies by target audience and is influenced by a number of factors such as incentives, survey length, and perceived burden. From question development to survey construction, the goal is to minimize measurement error with systematic planning and execution. PMID:23315318

Sinkowitz-Cochran, Ronda L

2013-01-11

124

The SCUBA Half-Degree Extragalactic Survey - I. Survey motivation, design and data processing  

Microsoft Academic Search

The Submillimetre Common-User Bolometer Array (SCUBA) Half-Degree Extragalactic Survey (SHADES) is a major new blank-field extragalactic submillimetre (submm) survey currently underway at the James Clerk Maxwell Telescope (JCMT). Ultimately, SHADES aims to cover half a square degree at 450 and 850mum to a 4sigma depth of ~= 8mJy at 850mum. Two fields are being observed, the Subaru\\/XMM-Newton Deep Field (SXDF)

A. M. J. Mortier; S. Serjeant; J. S. Dunlop; S. E. Scott; P. Ade; D. Alexander; O. Almaini; I. Aretxaga; C. Baugh; A. J. Benson; P. N. Best; A. Blain; J. Bock; C. Borys; A. Bressan; C. Carilli; E. L. Chapin; S. Chapman; D. L. Clements; K. Coppin; M. Crawford; M. Devlin; S. Dicker; L. Dunne; S. A. Eales; A. C. Edge; D. Farrah; M. Fox; C. Frenk; E. Gaztañaga; W. K. Gear; E. Gonzales-Solares; G. L. Granato; T. R. Greve; J. A. Grimes; J. Gundersen; M. Halpern; P. Hargrave; D. H. Hughes; R. J. Ivison; M. J. Jarvis; T. Jenness; R. Jimenez; E. van Kampen; A. King; C. Lacey; A. Lawrence; K. Lepage; R. G. Mann; G. Marsden; P. Mauskopf; B. Netterfield; S. Oliver; L. Olmi; M. J. Page; J. A. Peacock; C. P. Pearson; W. J. Percival; A. Pope; R. S. Priddey; S. Rawlings; N. Roche; M. Rowan-Robinson; D. Scott; K. Sekiguchi; M. Seigar; L. Silva; C. Simpson; I. Smail; J. A. Stevens; T. Takagi; G. Tucker; C. Vlahakis; I. Waddington; J. Wagg; M. Watson; C. Willott; M. Vaccari

2005-01-01

125

The Development of the Progressive in 19th Century English: A Quantitative Survey.  

ERIC Educational Resources Information Center

Expansion of the progressive (be+ing periphrastic form, where "be" is at the same time the copula and a statement of existence) was a major feature of modernization of the English verb system in the 19th century. A survey (1787-1880) of a collection of private letters, most from famous writers, reveals that linguistic factors played a small role…

Arnaud, Rene

1998-01-01

126

ESTIMATING PROPORTION OF AREA OCCUPIED UNDER COMPLEX SURVEY DESIGNS  

EPA Science Inventory

Estimating proportion of sites occupied, or proportion of area occupied (PAO) is a common problem in environmental studies. Typically, field surveys do not ensure that occupancy of a site is made with perfect detection. Maximum likelihood estimation of site occupancy rates when...

127

Expert Review of Fire Experience Survey. Questionnaire Design.  

National Technical Information Service (NTIS)

The report is the final study (expert) on changes to be inaugurated in the Fire Experience Survey that determines the national fire experience as measured by the number of fire incidents, deaths, injuries and property losses that occur as a result of fire...

T. W. Mangione

1979-01-01

128

Survey of Ada (Trademark)-Based PDLs (Program Design Language).  

National Technical Information Service (NTIS)

A Programming Design Language (PDL) is an English-like artificial language, sometimes called pseudo-code, used in documenting design logic in software systems development. Computer Technology Associates and Advanced Software Methods were contracted by the...

1985-01-01

129

The Optically Unbiased Gamma-Ray Burst Host (TOUGH) Survey. I. Survey Design and Catalogs  

NASA Astrophysics Data System (ADS)

Long-duration gamma-ray bursts (GRBs) are powerful tracers of star-forming galaxies. We have defined a homogeneous subsample of 69 Swift GRB-selected galaxies spanning a very wide redshift range. Special attention has been devoted to making the sample optically unbiased through simple and well-defined selection criteria based on the high-energy properties of the bursts and their positions on the sky. Thanks to our extensive follow-up observations, this sample has now achieved a comparatively high degree of redshift completeness, and thus provides a legacy sample, useful for statistical studies of GRBs and their host galaxies. In this paper, we present the survey design and summarize the results of our observing program conducted at the ESO Very Large Telescope (VLT) aimed at obtaining the most basic properties of galaxies in this sample, including a catalog of R and Ks magnitudes and redshifts. We detect the host galaxies for 80% of the GRBs in the sample, although only 42% have Ks -band detections, which confirms that GRB-selected host galaxies are generally blue. The sample is not uniformly blue, however, with two extremely red objects detected. Moreover, galaxies hosting GRBs with no optical/NIR afterglows, whose identification therefore relies on X-ray localizations, are significantly brighter and redder than those with an optical/NIR afterglow. This supports a scenario where GRBs occurring in more massive and dusty galaxies frequently suffer high optical obscuration. Our spectroscopic campaign has resulted in 77% now having redshift measurements, with a median redshift of 2.14 ± 0.18. TOUGH alone includes 17 detected z > 2 Swift GRB host galaxies suitable for individual and statistical studies—a substantial increase over previous samples. Seven hosts have detections of the Ly? emission line and we can exclude an early indication that Ly? emission is ubiquitous among GRB hosts, but confirm that Ly? is stronger in GRB-selected galaxies than in flux-limited samples of Lyman break galaxies. .

Hjorth, Jens; Malesani, Daniele; Jakobsson, Páll; Jaunsen, Andreas O.; Fynbo, Johan P. U.; Gorosabel, Javier; Krühler, Thomas; Levan, Andrew J.; Micha?owski, Micha? J.; Milvang-Jensen, Bo; Møller, Palle; Schulze, Steve; Tanvir, Nial R.; Watson, Darach

2012-09-01

130

Design-based treatment of unit nonresponse in environmental surveys using calibration weighting.  

PubMed

Unit nonresponse is often a problem in sample surveys. It arises when the values of the survey variable cannot be recorded for some sampled units. In this paper, the use of nonresponse calibration weighting to treat nonresponse is considered in a complete design-based framework. Nonresponse is viewed as a fixed characteristic of the units. The approach is suitable in environmental and forest surveys when sampled sites cannot be reached by field crews. Approximate expressions of design-based bias and variance of the calibration estimator are derived and design-based consistency is investigated. Choice of auxiliary variables to perform calibration is discussed. Sen-Yates-Grundy, Horvitz-Thompson, and jackknife estimators of the sampling variance are proposed. Analytical and Monte Carlo results demonstrate the validity of the procedure when the relationship between survey and auxiliary variables is similar in respondent and nonrespondent strata. An application to a forest survey performed in Northeastern Italy is considered. PMID:24022794

Fattorini, Lorenzo; Franceschi, Sara; Maffei, Daniela

2013-09-11

131

An Estimation Procedure for the New Public Employment Survey Design  

Microsoft Academic Search

The 2009 Public Employment Survey uses a new m ulti-stage sample method which combines cut-off sampling based on unit size with stratified sampling to reduce the sample size, save resources, and improve the precision of the estimates. In this paper, we propose fitting either two separate linear models within size-based strata or one overall, based on the results of a

Yang Cheng; Casey Corcoran; Joe Barth; Carma Hogue

132

Probability of detection of nests and implications for survey design  

USGS Publications Warehouse

Surveys based on double sampling include a correction for the probability of detection by assuming complete enumeration of birds in an intensively surveyed subsample of plots. To evaluate this assumption, we calculated the probability of detecting active shorebird nests by using information from observers who searched the same plots independently. Our results demonstrate that this probability varies substantially by species and stage of the nesting cycle but less by site or density of nests. Among the species we studied, the estimated single-visit probability of nest detection during the incubation period varied from 0.21 for the White-rumped Sandpiper (Calidris fuscicollis), the most difficult species to detect, to 0.64 for the Western Sandpiper (Calidris mauri), the most easily detected species, with a mean across species of 0.46. We used these detection probabilities to predict the fraction of persistent nests found over repeated nest searches. For a species with the mean value for detectability, the detection rate exceeded 0.85 after four visits. This level of nest detection was exceeded in only three visits for the Western Sandpiper, but six to nine visits were required for the White-rumped Sandpiper, depending on the type of survey employed. Our results suggest that the double-sampling method's requirement of nearly complete counts of birds in the intensively surveyed plots is likely to be met for birds with nests that survive over several visits of nest searching. Individuals with nests that fail quickly or individuals that do not breed can be detected with high probability only if territorial behavior is used to identify likely nesting pairs. ?? The Cooper Ornithological Society, 2009.

Smith, P. A.; Bart, J.; Lanctot, R. B.; McCaffery, B. J.; Brown, S.

2009-01-01

133

Cross-layer design: a survey and the road ahead  

Microsoft Academic Search

Of late, there has been an avalanche of cross-layer design proposals for wireless networks. A number of researchers have looked at specific aspects of network performance and, approaching cross-layer design via their interpretation of what it implies, have presented several cross-layer design proposals. These proposals involve different layers of the protocol stack, and address both cellular and ad hoc networks.

Vineet Srivastava; Mehul Motani

2005-01-01

134

Survey design for lakes and reservoirs in the United States to assess contaminants in fish tissue  

EPA Science Inventory

The National Lake Fish Tissue Study (NLFTS) was the first survey of fish contamination in lakes and reservoirs in the 48 conterminous states based on probability survey design. This study included the largest set (268) of persistent, bioaccumulative, and toxic (PBT) chemicals ev...

135

National Comorbidity Survey Replication Adolescent Supplement (NCS-A): II. Overview and Design  

ERIC Educational Resources Information Center

|The national comorbidity survey that seeks to determine the prevalence and correlates of mental disorders among U.S. adolescents is based on a dual-frame design that includes 904 adolescents from a previous household survey and 9,244 adolescent students from a sample of 320 schools. Replacement schools for those that refuse to participate do not…

Kessler, Ronald C.; Avenevoli, Shelli; Costello, E. Jane; Green, Jennifer Greif; Gruber, Michael J.; Heeringa, Steven; Merikangas, Kathleen R.; Pennell, Beth-Ellen; Sampson, Nancy A.; Zaslavsky, Alan M.

2009-01-01

136

User-centered design methods in practice: a survey of the state of the art  

Microsoft Academic Search

This paper reports the results of a recent survey involving over one hundred leading professionals of user-centered design (UCD). The survey covered a broad range of issues ranging from the profile of a typical UCD project including the percentage of total budget on UCD, organizational impact of UCD, measures of UCD success, and the most widely used methods and techniques.

Ji-Ye Mao; Karel Vredenburg; Paul W. Smith; Tom Carey

2001-01-01

137

Design Requirements For a Finger Rehabilitation Robot: Results From a Survey of Engineers and Health Professionals  

Microsoft Academic Search

Exoskeleton type finger rehabilitation robots are helpful in assisting the treatment of tendon injuries. A survey has been carried out with engineers and health professionals to further develop an existing finger \\u000aexoskeleton prototype. The goal of the study is to better understand the relative importance of several design criteria through the analysis of survey results and to improve the finger

Volkan Patoglu; Gurdal Ertek; Ozgur Oz; Deniz Zoroglu; Gul Kremer

2010-01-01

138

A knowledge-based system for designing efficient soil survey schemes  

Microsoft Academic Search

Decisions on land use or soil protection generally depend on soil survey information. There is a growing interest in information with quantified accuracy, which can be obtained by applying statistical sampling strategies. Prior to field work, a soil survey scheme must be designed, which is efficient with respect to accuracy of results and cost of operation. It was investigated how

P. Domburg; Gruijter de J. J

1995-01-01

139

A survey of what customers want in a cell phone design  

Microsoft Academic Search

The cell phone is an information appliance that has been widely used. It provides instant access to information and makes people more ‘connected’. The objective of our study is to investigate the relationship among the design features of the cell phone and identify the most important design features and design factors. In our survey study, we asked 1,006 college students

Chen Ling; Wonil Hwang; Gavriel Salvendy

2007-01-01

140

A method for obtaining randomized block designs in preclinical studies with multiple quantitative blocking variables.  

PubMed

A method is proposed for block randomization of treatments to experimental units that can accommodate both multiple quantitative blocking variables and unbalanced designs. Hierarchical clustering in conjunction with leaf-order optimization is used to block experimental units in multivariate space. The method is illustrated in the context of a diabetic mouse assay. A simulation study is presented to explore the utility of the proposed randomization method relative to that of a completely randomized approach, both in the presence and absence of covariate adjustment. An example R function is provided to illustrate the implementation of the method. PMID:20572260

Iturria, Stephen J

141

Profiling Tools for FPGA-Based Embedded Systems: Survey and Quantitative Comparison  

Microsoft Academic Search

Profiling tools are computer-aided design (CAD) tools that help in determining the computationally intensive portions in software. Embedded systems consist of hard- ware and software components that execute concurrently and efficiently to execute a specific task or application. Profiling tools are used by embedded system designers to choose computationally intensive functions for hardware implementation and acceleration. In this paper we

Jason G. Tong; Mohammed A. S. Khalid

2008-01-01

142

Quantitative autistic traits ascertained in a national survey of 22 529 Japanese schoolchildren  

PubMed Central

Objective Recent epidemiologic studies worldwide have documented a rise in prevalence rates for autism spectrum disorders (ASD). Broadening of diagnostic criteria for ASD may be a major contributor to the rise in prevalence, particularly if superimposed on an underlying continuous distribution of autistic traits. This study sought to determine the nature of the population distribution of autistic traits using a quantitative trait measure in a large national population sample of children. Method The Japanese version of the Social Responsiveness Scale (SRS) was completed by parents on a nationally representative sample of 22 529 children, age 6–15. Results Social Responsiveness Scale scores exhibited a skewed normal distribution in the Japanese population with a single-factor structure and no significant relation to IQ within the normal intellectual range. There was no evidence of a natural ‘cutoff’ that would differentiate populations of categorically affected children from unaffected children. Conclusion This study provides evidence of the continuous nature of autistic symptoms measured by the SRS, a validated quantitative trait measure. The findings reveal how paradigms for diagnosis that rest on arbitrarily imposed categorical cutoffs can result in substantial variation in prevalence estimation, especially when measurements used for case assignment are not standardized for a given population.

Kamio, Y; Inada, N; Moriwaki, A; Kuroda, M; Koyama, T; Tsujii, H; Kawakubo, Y; Kuwabara, H; Tsuchiya, K J; Uno, Y; Constantino, J N

2013-01-01

143

Quantitative western immunoblotting analysis in survey of human immunodeficiency virus-seropositive patients.  

PubMed Central

Identifying criteria for the early prediction of progression to acquired immunodeficiency syndrome in asymptomatic human immunodeficiency virus-seropositive patients have become necessary in order to widen the indications for antiviral treatment by azidothymidine and to increase its efficiency. With this aim in mind, we studied a cohort of seropositive homosexual men in the southwest region of France (Midi-Pyrénées). Of all the factors analyzed, the decline in p24 antibodies, assayed by second-generation enzyme-linked immunosorbent assay, was found to be the most reliable. On the basis of the work of Blomberg and Schmidt, we developed a quantitative approach to Western blotting (immunoblotting) for use in the follow-up of human immunodeficiency virus-infected patients. Our technique of quantitative Western blotting is unique because it uses a densitometric reading which, through a computerized system, gives a curve allowing the exact quantification of each stained Western blotting band. The results are expressed as integrals. This technique confirms the decrease in p24 and p17 antibodies as the criterion giving the earliest prediction of the progression to acquired immunodeficiency syndrome.

Schiavini, D G; Puel, J M; Averous, S A; Bazex, J A

1989-01-01

144

National Medical Expenditure Survey: Sample Design of the Institutional Population Component. Methods 6.  

National Technical Information Service (NTIS)

The sample design of the Institutional Population Component (IPC) of the 1987 National Medical Expenditure Survey (NMES) is described in detail. The IPC sample consisted of two distinct selections of 1987 institutional users: a sample of institutional res...

S. B. Cohen D. E. B. Potter P. Flyer

1993-01-01

145

Questionnaire Design in the Cognitive Research Laboratory: Series 6. Cognition and Survey Measurement No. 1.  

National Technical Information Service (NTIS)

The study evaluated the process that is used to develop and pretest questionnaires that comprise the annual supplements to the National Health Interview Survey (NHIS). The study was designed to answer the question, how do the current development and testi...

J. T. Lessler R. Tourangeau W. Salter

1989-01-01

146

An Overview of Wide-Field-Of-View Optical Designs for Survey Telescopes  

NASA Astrophysics Data System (ADS)

While large aperture telescopes are highly desirable for their enormous light grasp, smaller telescopes are increasingly pressed into service as wide-field survey instruments to aid in the search for near earth objects, satellites and space debris. Various optical designs are found throughout the technical literature but not all represent truly capable wide-field survey instruments and the search to find such designs is time consuming without any guarantees of its completeness. Here we present an overview of wide-field optical designs suitable for survey instruments in the ½ meter class aperture range. The size is small enough to be affordable for many less well funded research programs, yet large enough that when coupled with a modest CCD mosaic, the resulting system represents a capable survey instrument. Many optical designs exist with each having its own strengths and limitations.

Ackermann, M.; McGraw, J.; Zimmer, P.

2010-09-01

147

Effect of survey design and catch rate estimation on total catch estimates in Chinook salmon fisheries  

USGS Publications Warehouse

Roving–roving and roving–access creel surveys are the primary techniques used to obtain information on harvest of Chinook salmon Oncorhynchus tshawytscha in Idaho sport fisheries. Once interviews are conducted using roving–roving or roving–access survey designs, mean catch rate can be estimated with the ratio-of-means (ROM) estimator, the mean-of-ratios (MOR) estimator, or the MOR estimator with exclusion of short-duration (?0.5 h) trips. Our objective was to examine the relative bias and precision of total catch estimates obtained from use of the two survey designs and three catch rate estimators for Idaho Chinook salmon fisheries. Information on angling populations was obtained by direct visual observation of portions of Chinook salmon fisheries in three Idaho river systems over an 18-d period. Based on data from the angling populations, Monte Carlo simulations were performed to evaluate the properties of the catch rate estimators and survey designs. Among the three estimators, the ROM estimator provided the most accurate and precise estimates of mean catch rate and total catch for both roving–roving and roving–access surveys. On average, the root mean square error of simulated total catch estimates was 1.42 times greater and relative bias was 160.13 times greater for roving–roving surveys than for roving–access surveys. Length-of-stay bias and nonstationary catch rates in roving–roving surveys both appeared to affect catch rate and total catch estimates. Our results suggest that use of the ROM estimator in combination with an estimate of angler effort provided the least biased and most precise estimates of total catch for both survey designs. However, roving–access surveys were more accurate than roving–roving surveys for Chinook salmon fisheries in Idaho.

McCormick, Joshua L.; Quist, Michael C.; Schill, Daniel J.

2012-01-01

148

Quantitatively structural control of the karst based on speleological cave survey data: Cabeza Llerosos massif (Picos de Europa, Spain)  

NASA Astrophysics Data System (ADS)

Speleological cave survey characterizes each cave passage by a 3D line (called shot survey) defined by its length, direction and dipping. This line represents the three-dimensional geometry of the karst system and cave passage scale and can be statistically analyzed and compared with the geometry of the massif discontinuities. The aim of this work is to establish the quantitative influence of the structural geology in caves based on the comparison between cave survey data, joint and bedding measurements with stereographic projection. 15 km of cave surveys from Cabeza Llerosos massif (Picos de Europa, Northern Spain) were chosen to illustrate the method. The length of the cavities range between 50 to 4,438 m and their depth is up to 738 m. The methodology of work includes: 1) cave survey collection from caving reports; 2) geological mapping and cross-sections with cavities projection;3) data collection of bedding and joints in caves and near outcrops;4) definition of families of joints and bedding planes by stereographic projection; 5) definition of groups of cave passages from stereographic projection (based on their directions and dipping) and 6) comparison between bedding, families of joints and cave survey data by stereographic projection. Seven families of joints have been defined in all the area of study. The joint families are: J1) sub-vertical, J2) N63/68SE, J3) N29E/46NW, J4) N52E/72NW, J5) N129E/17NE, J6) N167E/57NE and J7) N180E/26E; the bedding is N30-55/60-80NE. Five groups of cave passages have been defined. "A" group of cave passage is formed by sub-vertical series; it is represented by the 61 % of all the cave passages and is conditioned by the joint families J1, J3, J4 and J6, as well as their intersections. "B" group is formed by N10W-N10E/3-20N galleries; it corresponds with the 13 % of the series and is controlled by the intersection between families J5 and J6. "C" group is defined by N20-70E/0-50NE passages; it is represented by the 13 % of the cavities and is ruled by the intersection between families J1, J2, J5 and J7. "D" group is formed by N125-145E horizontal galleries; it includes the 6 % of the passages and follows the bedding. "E" group is defined by N105-151W/38-65SW passages; it is represented by the 3 % of the passages and is conditioned by the families J1, J2, J3 and J4. This work proposes a new methodology of work in speleogenesis based on the establishment of the quantitative relationships between cave survey with joints and bedding. The method shows some advantages when compared with other methodologies (e.g. statistically models based on structural analysis of the discontinuities of the rock massif or based on the Inception Horizon concept): it is a 3D analysis that can be applied on complex geological settings to make accurate estimations of the percentage of the caves controlled by each joint family and bedding.

Ballesteros, D.; Jiménez-Sánchez, M.; García-Sansegundo, J.; Borreguero, M.; Sendra, G.

2012-04-01

149

The Health Effects of Climate Change: A Survey of Recent Quantitative Research  

PubMed Central

In recent years there has been a large scientific and public debate on climate change and its direct as well as indirect effects on human health. In particular, a large amount of research on the effects of climate changes on human health has addressed two fundamental questions. First, can historical data be of some help in revealing how short-run or long-run climate variations affect the occurrence of infectious diseases? Second, is it possible to build more accurate quantitative models which are capable of predicting the future effects of different climate conditions on the transmissibility of particularly dangerous infectious diseases? The primary goal of this paper is to review the most relevant contributions which have directly tackled those questions, both with respect to the effects of climate changes on the diffusion of non-infectious and infectious diseases, with malaria as a case study. Specific attention will be drawn on the methodological aspects of each study, which will be classified according to the type of quantitative model considered, namely time series models, panel data and spatial models, and non-statistical approaches. Since many different disciplines and approaches are involved, a broader view is necessary in order to provide a better understanding of the interactions between climate and health. In this respect, our paper also presents a critical summary of the recent literature related to more general aspects of the impacts of climate changes on human health, such as: the economics of climate change; how to manage the health effects of climate change; the establishment of Early Warning Systems for infectious diseases.

Grasso, Margherita; Manera, Matteo; Chiabai, Aline; Markandya, Anil

2012-01-01

150

First National Survey of Lead and Allergens in Housing: survey design and methods for the allergen and endotoxin components.  

PubMed Central

From July 1998 to August 1999, the U.S. Department of Housing and Urban Development and the National Institute of Environmental Health Sciences conducted the first National Survey of Lead and Allergens in Housing. The purpose of the survey was to assess children's potential household exposure to lead, allergens, and bacterial endotoxins. We surveyed a sample of 831 homes, representing 96 million permanently occupied, noninstitutional housing units that permit resident children. We administered questionnaires to household members, made home observations, and took environmental samples. This article provides general background information on the survey, an overview of the survey design, and a description of the data collection and laboratory methods pertaining to the allergen and endotoxin components. We collected dust samples from a bed, the bedroom floor, a sofa or chair, the living room floor, the kitchen floor, and a basement floor and analyzed them for cockroach allergen Bla g 1, the dust mite allergens Der f 1 and Der p 1, the cat allergen Fel d 1, the dog allergen Can f 1, the rodent allergens Rat n 1 and mouse urinary protein, allergens of the fungus Alternaria alternata, and endotoxin. This article provides the essential context for subsequent reports that will describe the prevalence of allergens and endotoxin in U.S. households, their distribution by various housing characteristics, and their associations with allergic diseases such as asthma and rhinitis.

Vojta, Patrick J; Friedman, Warren; Marker, David A; Clickner, Robert; Rogers, John W; Viet, Susan M; Muilenberg, Michael L; Thorne, Peter S; Arbes, Samuel J; Zeldin, Darryl C

2002-01-01

151

Metamodels for Computer-based Engineering Design: Survey and recommendations  

Microsoft Academic Search

Abstract. The use of statistical techniques,to build ap- proximations,of expensive computer,analysis codes pervades much,of today’s engineering,design. These statistical approxi- mations, or metamodels, are used to replace the actual expensive computer analyses, facilitating multidisciplinary, multiobjective optimization and,concept,exploration. In this paper, we review several of these techniques, including design of experiments, response surface methodology, Taguchi methods, neural networks, inductive learning and kriging.

Timothy W. Simpson; J. D. Poplinski; P. N. Koch; J. K. Allen

2001-01-01

152

Optimality and Efficiency in Auctions Design: A Survey  

Microsoft Academic Search

Efficiency and optimality are the two primary and generally conflicting goals in any auction design: the former focuses on\\u000a the social welfare of the whole seller–bidder system, whereas the latter emphasizes revenue-maximizing on the seller side.\\u000a In this chapter, we review the auctions design problem based on these two aspects in various information structures and circumstances.\\u000a The most recent results

Roger L. Zhan

153

THE HETDEX PILOT SURVEY. I. SURVEY DESIGN, PERFORMANCE, AND CATALOG OF EMISSION-LINE GALAXIES  

SciTech Connect

We present a catalog of emission-line galaxies selected solely by their emission-line fluxes using a wide-field integral field spectrograph. This work is partially motivated as a pilot survey for the upcoming Hobby-Eberly Telescope Dark Energy Experiment. We describe the observations, reductions, detections, redshift classifications, line fluxes, and counterpart information for 397 emission-line galaxies detected over 169 {open_square}' with a 3500-5800 A bandpass under 5 A full-width-half-maximum (FWHM) spectral resolution. The survey's best sensitivity for unresolved objects under photometric conditions is between 4 and 20x 10{sup -17} erg s{sup -1} cm{sup -2} depending on the wavelength, and Ly{alpha} luminosities between 3 x 10{sup 42} and 6 x 10{sup 42} erg s{sup -1} are detectable. This survey method complements narrowband and color-selection techniques in the search of high-redshift galaxies with its different selection properties and large volume probed. The four survey fields within the COSMOS, GOODS-N, MUNICS, and XMM-LSS areas are rich with existing, complementary data. We find 105 galaxies via their high-redshift Ly{alpha} emission at 1.9 < z < 3.8, and the majority of the remainder objects are low-redshift [O II]3727 emitters at z < 0.56. The classification between low- and high-redshift objects depends on rest-frame equivalent width (EW), as well as other indicators, where available. Based on matches to X-ray catalogs, the active galactic nuclei fraction among the Ly{alpha} emitters is 6%. We also analyze the survey's completeness and contamination properties through simulations. We find five high-z, highly significant, resolved objects with FWHM sizes >44 {open_square}' which appear to be extended Ly{alpha} nebulae. We also find three high-z objects with rest-frame Ly{alpha} EW above the level believed to be achievable with normal star formation, EW{sub 0}>240 A. Future papers will investigate the physical properties of this sample.

Adams, Joshua J.; Blanc, Guillermo A.; Gebhardt, Karl; Hao, Lei; Byun, Joyce; Fry, Alex; Jeong, Donghui; Komatsu, Eiichiro [Department of Astronomy, University of Texas at Austin, 1 University Station C1400, Austin, TX 78712 (United States); Hill, Gary J.; Cornell, Mark E.; MacQueen, Phillip J. [McDonald Observatory, University of Texas at Austin, 1 University Station C1402, Austin, TX 78712 (United States); Drory, Niv; Bender, Ralf; Hopp, Ulrich; Kelzenberg, Ralf [Max-Planck Instituet fur extraterrestrische Physik, Giessenbachstrasse, 85741 Garching bei Muenchen (Germany); Ciardullo, Robin; Gronwall, Caryl [Department of Astronomy and Astrophysics, The Pennsylvania State University, 525 Davey Lab, University Park, PA 16802 (United States); Finkelstein, Steven L. [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A and M University, 4242 TAMU, College Station, TX 77843 (United States); Gawiser, Eric [Department of Physics and Astronomy, Rutgers, The State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Kelz, Andreas [Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam (Germany)

2011-01-15

154

Professional values and reported behaviours of doctors in the USA and UK: quantitative survey.  

PubMed

BACKGROUND The authors aimed to determine US and UK doctors' professional values and reported behaviours, and the extent to which these vary with the context of care. METHOD 1891 US and 1078 UK doctors completed the survey (64.4% and 40.3% response rate respectively). Multivariate logistic regression was used to compare responses to identical questions in the two surveys. RESULTS UK doctors were more likely to have developed practice guidelines (82.8% UK vs 49.6% US, p<0.001) and to have taken part in a formal medical error-reduction programme (70.9% UK vs 55.7% US, p<0.001). US doctors were more likely to agree about the need for periodic recertification (completely agree 23.4% UK vs 53.9% US, p<0.001). Nearly a fifth of doctors had direct experience of an impaired or incompetent colleague in the previous 3 years. Where the doctor had not reported the colleague to relevant authorities, reasons included thinking that someone else was taking care of the problem, believing that nothing would happen as a result, or fear of retribution. UK doctors were more likely than US doctors to agree that significant medical errors should always be disclosed to patients. More US doctors reported that they had not disclosed an error to a patient because they were afraid of being sued. DISCUSSION The context of care may influence both how professional values are expressed and the extent to which behaviours are in line with stated values. Doctors have an important responsibility to develop their healthcare systems in ways which will support good professional behaviour. PMID:21383386

Roland, Martin; Rao, Sowmya R; Sibbald, Bonnie; Hann, Mark; Harrison, Stephen; Walter, Alex; Guthrie, Bruce; Desroches, Catherine; Ferris, Timothy G; Campbell, Eric G

2011-03-07

155

Professional values and reported behaviours of doctors in the USA and UK: quantitative survey  

PubMed Central

Background The authors aimed to determine US and UK doctors' professional values and reported behaviours, and the extent to which these vary with the context of care. Method 1891 US and 1078 UK doctors completed the survey (64.4% and 40.3% response rate respectively). Multivariate logistic regression was used to compare responses to identical questions in the two surveys. Results UK doctors were more likely to have developed practice guidelines (82.8% UK vs 49.6% US, p<0.001) and to have taken part in a formal medical error-reduction programme (70.9% UK vs 55.7% US, p<0.001). US doctors were more likely to agree about the need for periodic recertification (completely agree 23.4% UK vs 53.9% US, p<0.001). Nearly a fifth of doctors had direct experience of an impaired or incompetent colleague in the previous 3?years. Where the doctor had not reported the colleague to relevant authorities, reasons included thinking that someone else was taking care of the problem, believing that nothing would happen as a result, or fear of retribution. UK doctors were more likely than US doctors to agree that significant medical errors should always be disclosed to patients. More US doctors reported that they had not disclosed an error to a patient because they were afraid of being sued. Discussion The context of care may influence both how professional values are expressed and the extent to which behaviours are in line with stated values. Doctors have an important responsibility to develop their healthcare systems in ways which will support good professional behaviour.

Rao, Sowmya R; Sibbald, Bonnie; Hann, Mark; Harrison, Stephen; Walter, Alex; Guthrie, Bruce; Desroches, Catherine; Ferris, Timothy G; Campbell, Eric G

2011-01-01

156

THE BRIGHTEST OF REIONIZING GALAXIES SURVEY: DESIGN AND PRELIMINARY RESULTS  

SciTech Connect

We present the first results on the search for very bright (M{sub AB} {approx} -21) galaxies at redshift z {approx} 8 from the Brightest of Reionizing Galaxies (BoRG) survey. BoRG is a Hubble Space Telescope Wide Field Camera 3 (WFC3) pure-parallel survey that is obtaining images on random lines of sight at high Galactic latitudes in four filters (F606W, F098M, F125W, and F160W), with integration times optimized to identify galaxies at z {approx}> 7.5 as F098M dropouts. We discuss here results from a search area of approximately 130 arcmin{sup 2} over 23 BoRG fields, complemented by six other pure-parallel WFC3 fields with similar filters. This new search area is more than two times wider than previous WFC3 observations at z {approx} 8. We identify four F098M-dropout candidates with high statistical confidence (detected at greater than 8{sigma} confidence in F125W). These sources are among the brightest candidates currently known at z {approx} 8 and approximately 10 times brighter than the z = 8.56 galaxy UDFy-38135539. They thus represent ideal targets for spectroscopic follow-up observations and could potentially lead to a redshift record, as our color selection includes objects up to z {approx} 9. However, the expected contamination rate of our sample is about 30% higher than typical searches for dropout galaxies in legacy fields, such as the GOODS and HUDF, where deeper data and additional optical filters are available to reject contaminants.

Trenti, M. [Center for Astrophysics and Space Astronomy, University of Colorado, 389-UCB, Boulder, CO 80309 (United States); Bradley, L. D.; Stiavelli, M.; MacKenty, J. W. [Space Telescope Science Institute, 3700 San Martin Drive Baltimore, MD 21218 (United States); Oesch, P.; Carollo, C. M. [Institute of Astronomy, ETH Zurich, CH-8093 Zurich (Switzerland); Treu, T. [Department of Physics, University of California, Santa Barbara, CA 93106-9530 (United States); Bouwens, R. J.; Illingworth, G. D. [Astronomy Department, University of California, Santa Cruz, CA 95064 (United States); Shull, J. M., E-mail: trenti@colorado.edu [CASA, Department of Astrophysics and Planetary Science, University of Colorado, 389-UCB, Boulder, CO 80309 (United States)

2011-02-01

157

Quantitative analysis and design of a spray aerosol inhaler. Part 2: improvements in mouthpiece performance.  

PubMed

Abstract Background: The objective of this study was to utilize previously identified critical design attributes for the capillary aerosol generator as a model spray inhaler in order to develop a second-generation device that minimized aerosol drug deposition in the mouthpiece. Materials and Methods: Computational fluid dynamics (CFD) predictive analysis of the critical design attributes indicated that turbulence intensity should be reduced and the effective mouthpiece diameter should be increased. Two second-generation inhaler mouthpieces meeting these specifications were manufactured and tested. The first device (Design 1) implemented a larger cross-sectional area in the mouthpiece and streamlined flow, whereas the second device (Design 2) used a perforated mouthpiece wall. An in vitro deposition study was performed to quantify the deposition of drug mass in the mouthpieces and connected induction ports, and the results were compared with the CFD predictions. Results: The two second-generation mouthpieces reduced in vitro aerosol deposition from the original value of 7.8% to values of 2.1% (Device 1) and 4.3% (Device 2), without largely altering the induction port deposition. This was achieved by design alterations aimed at reducing turbulence intensity and increasing the effective mouthpiece diameter. CFD model predictions were in good agreement with the in vitro experimental data. Conclusions: A second-generation spray inhaler mouthpiece with low drug deposition was developed using a predictive CFD model and in vitro experiments. Applying this quantitative analysis and design methodology to medical devices, which is similar to the Quality by Design paradigm, could provide significant advantages compared with traditional approaches. PMID:23098326

Hindle, Michael; Longest, P Worth

2012-10-25

158

Using care bundles to reduce in-hospital mortality: quantitative survey  

Microsoft Academic Search

Problem To reduce hospital inpatient mortality and thus increase public confidence in the quality of patient care in an urban acute hospital trust after adverse media coverage. Design Eight care bundles of treatments known to be effective in reducing in-hospital mortality were used in the intervention year; adjusted mortality (from hospital episode statistics) was compared to the preceding year for

Elizabeth Robb; Brian Jarman; Ganesh Suntharalingam; Clare Higgens; Rachel Tennant; Karen Elcock

2010-01-01

159

Designing Your Sample Efficiently: Clustering Effects in Education Surveys  

ERIC Educational Resources Information Center

|Background: Education, and information about education, is highly structured: individuals are grouped into classes, which are grouped into schools, which are grouped into local authorities, which are grouped into countries. The degree of similarity among members of a group, such as a school or classroom, is a very important factor in the design

Hutchison, Dougal

2009-01-01

160

Net Survey: "Top Ten Mistakes" in Academic Web Design.  

ERIC Educational Resources Information Center

Highlights the top ten mistakes in academic Web design: (1) bloated graphics; (2) scaling images; (3) dense text; (4) lack of contrast; (5) font size; (6) looping animations; (7) courseware authoring software; (8) scrolling/long pages; (9) excessive download; and (10) the nothing site. Includes resources. (CMK)

Petrik, Paula

2000-01-01

161

The IMACS Cluster Building Survey. V. Further Evidence for Starburst Recycling from Quantitative Galaxy Morphologies  

NASA Astrophysics Data System (ADS)

Using J- and K s-band imaging obtained as part of the IMACS Cluster Building Survey (ICBS), we measure Sérsic indices for 2160 field and cluster galaxies at 0.31 < z < 0.54. Using both mass- and magnitude-limited samples, we compare the distributions for spectroscopically determined passive, continuously star-forming, starburst, and post-starburst systems and show that previously established spatial and statistical connections between these types extend to their gross morphologies. Outside of cluster cores, we find close structural ties between starburst and continuously star-forming, as well as post-starburst and passive types, but not between starbursts and post-starbursts. These results independently support two conclusions presented in Paper II of this series: (1) most starbursts are the product of a non-disruptive triggering mechanism that is insensitive to global environment, such as minor mergers; (2) starbursts and post-starbursts generally represent transient phases in the lives of "normal" star-forming and quiescent galaxies, respectively, originating from and returning to these systems in closed "recycling" loops. In this picture, spectroscopically identified post-starbursts constitute a minority of all recently terminated starbursts, largely ruling out the typical starburst as a quenching event in all but the densest environments. Data were obtained using the 6.5 m Magellan Telescopes at Las Campanas Observatory, Chile.

Abramson, Louis E.; Dressler, Alan; Gladders, Michael D.; Oemler, Augustus, Jr.; Poggianti, Bianca M.; Monson, Andrew; Persson, Eric; Vulcani, Benedetta

2013-11-01

162

Camel-Vehicle Accidents Mitigation System: Design and Survey  

Microsoft Academic Search

\\u000a Animal-vehicle collisions (AVC) affect human safety, property and wildlife. Furthermore, the number of collisions with large animals worldwide and especially\\u000a in the Saudi Arabia Kingdom has increased substantially over the last decades. The negative effects of AVC and the increase in collisions prompted the initiation for designing a deployable and intelligent Camel-Vehicle Accident Avoidance System (CVAAS) using global positioning system

Khaled Ragab; Mohammed Zahrani; Asrar Ul Haque

163

A Survey of Hardware Accelerators Used in Computer-Aided Design  

Microsoft Academic Search

Hardware accelerators, or special-purpose engines, have been used in computer-aided design applications for nearly 20 years. In this time, roughly 20 machines have been built and tested specifically for such purposes as simulation, design rule checking, placement, and routing. Their uses are increasing, and the machines are becoming commercially available. This survey describes not only the machines but also their

Tom Blank

1984-01-01

164

Quantitative determination of rarity of freshwater fishes and implications for imperiled-species designations.  

PubMed

Conserving rare species and protecting biodiversity and ecosystem functioning depends on sound information on the nature of rarity. Rarity is multidimensional and has a variety of definitions, which presents the need for a quantitative classification scheme with which to categorize species as rare or common. We constructed such a classification for North American freshwater fishes to better describe rarity in fishes and provide researchers and managers with a tool to streamline conservation efforts. We used data on range extents, habitat specificities, and local population sizes of North American freshwater fishes and a variety of quantitative methods and statistical decision criteria, including quantile regression and a cost-function algorithm to determine thresholds for categorizing a species as rare or common. Species fell into eight groups that conform to an established framework for rarity. Fishes listed by the American Fisheries Society (AFS) as endangered, threatened, or vulnerable were most often rare because their local population sizes were low, ranges were small, and they had specific habitat needs, in that order, whereas unlisted species were most often considered common on the basis of these three factors. Species with large ranges generally had few specific habitat needs, whereas those with small ranges tended to have narrow habitat specificities. We identified 30 species not designated as imperiled by AFS that were rare along all dimensions of rarity and may warrant further study or protection, and we found three designated species that were common along all dimensions and may require a review of their imperilment status. Our approach could be applied to other taxa to aid conservation decisions and serve as a useful tool for future revisions of listings of fish species. PMID:20337684

Pritt, Jeremy J; Frimpong, Emmanuel A

2010-10-01

165

HRMS sky survey wideband feed system design for DSS 24 beam waveguide antenna  

NASA Astrophysics Data System (ADS)

The High-Resolution Microwave Survey (HRMS) Sky Survey project will be implemented on the DSS 24 beam waveguide (BWG) antenna over the frequency range of 2.86 to 10 GHz. Two wideband, ring-loaded, corrugated feed horns were designed to cover this range. The horns match the frequency-dependent gain requirements for the DSS 24 BWG system. The performance of the feed horns and the calculated system performance of DSS 24 are presented.

Stanton, P. H.; Lee, P. R.; Reilly, H. F.

1993-08-01

166

Vital and Health Statistics Series 1, Number 52: Design and Operation of the Survey of Adult Transition and Health, 2007.  

National Technical Information Service (NTIS)

This report documents the survey design and operating procedures for the 2007 Survey of Adult Transition and Health (SATH). Sponsored by the Maternal and Child Health Bureau of the Health Resources and Services Administration, SATH was conducted by the Ce...

2011-01-01

167

Compatible immuno-NASBA LOC device for quantitative detection of waterborne pathogens: design and validation.  

PubMed

Waterborne pathogens usually pose a global threat to animals and human beings. There has been a growing demand for convenient and sensitive tools to detect the potential emerging pathogens in water. In this study, a lab-on-a-chip (LOC) device based on the real-time immuno-NASBA (immuno-nucleic acid sequence-based amplification) assay was designed, fabricated and verified. The disposable immuno-NASBA chip is modelled on a 96-well ELISA microplate, which contains 43 reaction chambers inside the bionic channel networks. All valves are designed outside the chip and are reusable. The sample and reagent solutions were pushed into each chamber in turn, which was controlled by the valve system. Notably, the immuno-NASBA chip is completely compatible with common microplate readers in a biological laboratory, and can distinguish multiple waterborne pathogens in water samples quantitatively and simultaneously. The performance of the LOC device was demonstrated by detecting the presence of a synthetic peptide, ACTH (adrenocorticotropic hormone) and two common waterborne pathogens, Escherichia coli (E. coli) and rotavirus, in artificial samples. The results indicated that the LOC device has the potential to quantify traces of waterborne pathogens at femtomolar levels with high specificity, although the detection process was still subject to some factors, such as ribonuclease (RNase) contamination and non-specific adsorption. As an ultra-sensitive tool to quantify waterborne pathogens, the LOC device can be used to monitor water quality in the drinking water system. Furthermore, a series of compatible high-throughput LOC devices for monitoring waterborne pathogens could be derived from this prototype with the same design idea, which may render the complicated immuno-NASBA assays convenient to common users without special training. PMID:22146918

Zhao, Xinyan; Dong, Tao; Yang, Zhaochu; Pires, Nuno; Høivik, Nils

2011-12-07

168

Sampling design for the 1980 commercial and multifamily residential building survey  

SciTech Connect

Details of a proposed sample design for the 1980 Commercial and Multifamily Building Energy Performance Survey are presented. The objective of the survey is to assess the extent to which new building design practices comply with the proposed 1980 Energy Budget Levels for Commercial and Multifamily Residential Building Designs (DEB/sub 80/). The procedure will be to: identify a small number of building types which account for the majority of commercial buildings constructed in the U.S.A.; conduct a separate survey for each building type; and include only buildings designed during 1980. For each building in the survey, the Design Energy Consumption (DEC/sub 80/) will be determined by the DOE2.1 computer program. The quantity X = (DEC/sub 80/ - DEB/sub 80/), will be calculated for each building as a measure of its compliance with DEB/sub 80/. These X quantities will then be used to compute sample statistics. Inferences about nationwide compliance with DEB/sub 80/ may then be made for each building type. This report provides details of the population, sampling frame, stratification, sample size, and implementation of the sampling plan.

Bowen, W.M.; Olsen, A.R.; Nieves, A.L.

1981-06-01

169

Optimization of Terrestrial Laser Scanning Survey Design for Dynamic Terrain Monitoring  

NASA Astrophysics Data System (ADS)

Terrestrial laser scanning (lidar) technology offers great potential as a rapid mapping technology for monitoring dynamic terrain evolution at localized scales but there are inherent limitations. Because such systems have limited scanning ranges and are static, multiple scans must be merged together to form a seamless model of the terrain scene. For contiguous mapping of terrain over wide-areas (> few hundred meters) this poses several obstacles that must be overcome. The selected measurement set-up, sampling resolution, and other survey design factors as well as inherent system characteristics will influence the measurement capabilities and efficiency of repeat-coverage surveys for monitoring terrain change. Additionally, relative to airborne lidar, developments in the utilization of terrestrial lidar for terrain mapping have lagged behind. In an effort to develop more effective methods for terrain monitoring with terrestrial lidar, this research investigates the influence of survey design and scan configuration on surface change detection capability with the goal of optimizing data acquisition while minimizing information loss. Results are based on several terrestrial lidar surveys conducted at an experimental watershed maintained by North Carolina State University. From the data, the influence of measurement set-up and system inherent parameters on resultant terrain data are characterized. This provides a better understanding of realistic performance traits for the given system and terrain scene enabling more efficient survey design. Finally, an optimization approach for data acquisition is developed using multiple viewshed analysis constrained by the system performance characteristics and survey design specifications. The resultant method provides a powerful design tool for rapid acquisition of terrain measurements with terrestrial lidar.

Starek, M. J.; Mitasova, H.; Harmon, R. S.

2010-12-01

170

Quantitative fault tolerant control design for a hydraulic actuator with a leaking piston seal  

NASA Astrophysics Data System (ADS)

Hydraulic actuators are complex fluid power devices whose performance can be degraded in the presence of system faults. In this thesis a linear, fixed-gain, fault tolerant controller is designed that can maintain the positioning performance of an electrohydraulic actuator operating under load with a leaking piston seal and in the presence of parametric uncertainties. Developing a control system tolerant to this class of internal leakage fault is important since a leaking piston seal can be difficult to detect, unless the actuator is disassembled. The designed fault tolerant control law is of low-order, uses only the actuator position as feedback, and can: (i) accommodate nonlinearities in the hydraulic functions, (ii) maintain robustness against typical uncertainties in the hydraulic system parameters, and (iii) keep the positioning performance of the actuator within prescribed tolerances despite an internal leakage fault that can bypass up to 40% of the rated servovalve flow across the actuator piston. Experimental tests verify the functionality of the fault tolerant control under normal and faulty operating conditions. The fault tolerant controller is synthesized based on linear time-invariant equivalent (LTIE) models of the hydraulic actuator using the quantitative feedback theory (QFT) design technique. A numerical approach for identifying LTIE frequency response functions of hydraulic actuators from acceptable input-output responses is developed so that linearizing the hydraulic functions can be avoided. The proposed approach can properly identify the features of the hydraulic actuator frequency response that are important for control system design and requires no prior knowledge about the asymptotic behavior or structure of the LTIE transfer functions. A distributed hardware-in-the-loop (HIL) simulation architecture is constructed that enables the performance of the proposed fault tolerant control law to be further substantiated, under realistic operating conditions. Using the HIL framework, the fault tolerant hydraulic actuator is operated as a flight control actuator against the real-time numerical simulation of a high-performance jet aircraft. A robust electrohydraulic loading system is also designed using QFT so that the in-flight aerodynamic load can be experimentally replicated. The results of the HIL experiments show that using the fault tolerant controller to compensate the internal leakage fault at the actuator level can benefit the flight performance of the airplane.

Karpenko, Mark

171

Cathodic Protection System Design 1. The Pre-Design Field Survey.  

National Technical Information Service (NTIS)

There arc two basic scenarios for the design of cathodic protection systems: designing cathodic protection of a new facility and retrofitting the cathodic protection of an existing facility. In both cases, it is necessary to determine many site and facili...

J. Jenkins

1995-01-01

172

[Project design and implementation of the fourth national survey Chinese matiera medica resources].  

PubMed

The planning of the fourth national survey on Chinese materia medica resources shall follow the requirement of "carrying out the national survey on Chinese materia medica resources, strengthening the construction of Chinese materia medica resources monitoring and information network" which is according to the document issued by the State Council. Based on the responsibilities of State Administration of Traditional Chinese Medicine which is "organizing the survey, promoting the resource-protection, keeping development and rational utilization", combined with the key problems that need to be solved in current medicinal industry, the related instructions issued by central leadership and the recommendations from NPC delegates, CPPCC members and experts, the planning shall make overall plans and top-level design for the new round of national survey on Chinese materia medica resources. PMID:23724663

Huang, Lu-Qi; Lu, Jian-Wei; Guo, Lan-Ping; Zhang, Xiao-Bo; Zhao, Run-Huai; Zhang, Ben-Gang; Li, Yu; Su, Gang-Qiang; Li, Da-Ning

2013-03-01

173

Musculoskeletal impairment survey in Rwanda: Design of survey tool, survey methodology, and results of the pilot study (a cross sectional survey)  

Microsoft Academic Search

BACKGROUND: Musculoskeletal impairment (MSI) is an important cause of morbidity and mortality worldwide, especially in developing countries. Prevalence studies for MSI in the developing world have used varying methodologies and are seldom directly comparable. This study aimed to develop a new tool to screen for and diagnose MSI and to pilot test the methodology for a national survey in Rwanda.

Oluwarantimi Atijosan; Hannah Kuper; Dorothea Rischewski; Victoria Simms; Christopher Lavy

2007-01-01

174

On the analysis and design of software for reinforcement learning, with a survey of existing systems  

Microsoft Academic Search

Reinforcement Learning (RL) is a very complex domain and software for RL is correspondingly complex. We analyse the scope,\\u000a requirements, and potential for RL software, discuss relevant design issues, survey existing software, and make recommendations\\u000a for designers. We argue that broad and flexible libraries of reusable software components are valuable from a scientific,\\u000a as well as practical, perspective, as they

Tim Kovacs; Robert Egginton

2011-01-01

175

USING GIS TO GENERATE SPATIALLY-BALANCED RANDOM SURVEY DESIGNS FOR NATURAL RESOURCE APPLICATIONS  

EPA Science Inventory

Sampling of a population is frequently required to understand trends and patterns in natural resource management because financial and time constraints preclude a complete census. A rigorous probability-based survey design specifies where to sample so that inferences from the sam...

176

Survey Techniques for Freshwater Streams on Oceanic Islands: Important Design Considerations for the PABITRA Project  

Microsoft Academic Search

Fundamental differences in life history patterns of most indigenous freshwater stream species on oceanic islands and freshwater species in continen- tal stream systems require important differences in design of appropriate aquatic survey methodologies. As an example of these issues, use of Instream Flow In- cremental Methodology (IFIM) and the Index of Biotic Integrity (IBI) for de- scribing island stream conditions

J. E. Parham

2005-01-01

177

Decision making preferences in the medical encounter – a factorial survey design  

Microsoft Academic Search

BACKGROUND: Up to now it has not been systematically investigated in which kind of clinical situations a consultation style based on shared decision making (SDM) is preferred by patients and physicians. We suggest the factorial survey design to address this problem. This method, which so far has hardly been used in health service research, allows to vary relevant factors describing

Meike Müller-Engelmann; Tanja Krones; Heidi Keller; Norbert Donner-Banzhoff

2008-01-01

178

Empirical and finite element approaches to forging die design: A state-of-the-art survey  

Microsoft Academic Search

A survey of research concerned with the use of computer-aided techniques to simulate the forging process and design forging\\u000a dies is presented here. Attention is focused on finite element models and empirical guidelines that have been developed in\\u000a this connection.

I. Haque; J. E. Jackson; T. Gangjee; A. Raikar

1987-01-01

179

The Effect of Cluster Sampling Design in Survey Research on the Standard Error Statistic.  

ERIC Educational Resources Information Center

|Standard statistical methods are used to analyze data that is assumed to be collected using a simple random sampling scheme. These methods, however, tend to underestimate variance when the data is collected with a cluster design, which is often found in educational survey research. The purposes of this paper are to demonstrate how a cluster…

Wang, Lin; Fan, Xitao

180

Tutorial and Survey Paper Power Minimization in IC Design: Principles and Applications  

Microsoft Academic Search

Low power has emerged as a principal theme in today's electronics industry. The need for low power has caused a major paradigm shift in which power dissipation is as important as performance and area. This article presents an in-depth survey of CAD methodologies and techniques for designing low power digital CMOS circuits and systems and describes the many issues facing

MASSOUD PEDRAM

1996-01-01

181

Designing cobalt chromium removable partial dentures for patients with shortened dental arches: a pilot survey.  

PubMed

The aim of this survey was to investigate the quality of prescription for the fabrication of cobalt chromium removable partial dentures (RPDs) that are used to extend the shortened dental arches (SDAs). A survey of four commercial dental laboratories located in northern England was conducted. The target of this survey was cobalt chromium RPDs that were requested to restore SDAs comprising the anterior teeth and 2-4 premolars. Dentists' prescriptions were scrutinised, and a special data collection form was completed accordingly. A total of 94 dentists' prescriptions and associated SDA casts were examined. Almost all the requested cobalt chromium RPDs were clasp-retained RPDs (97%). Scrutinising the 91 prescriptions for clasp-retained cobalt chromium RPDs showed that dentists' prescriptions did not have any instructions about the design of the partial denture in a considerable proportion of the cases (32%). Teeth to be clasped were identified clearly in 45% of the prescriptions. A majority of the dentists (64%) failed to provide any instructions about the design of the rests to be placed on the most posterior premolar abutment teeth. A considerable proportion of the dentists delegated the task of selecting the type of the major connector to the dental technician (41%). Only 21 (23%) of the examined casts had clearly defined rest seat preparation. The outcome of this pilot survey shows inadequate quality of prescription in designing RPDs for patients with SDAs. This finding has an ethical and clinical bearing and does not fit with current legal guidelines relevant to designing RPDs. PMID:21175736

Nassani, M Z; Devlin, H; Tarakji, B; McCord, J F

2010-12-22

182

Spatial patterns of Yucatan reef fish communities: Testing models using a multi-scale survey design  

Microsoft Academic Search

Using a hierarchical multi-scale survey design, we examined the spatial patterns of reef fish communities and tested ecological models concerning the relative importance of reef geomorphology and anthropogenic pressure possibly driving community structure. Canonical redundancy analysis was used as a form of multivariate analysis of variance (MANOVA) to asses differences in reef fish community composition at two spatial scales: broad

Enrique Núñez-Lara; J. Ernesto Arias-González; Pierre Legendre

2005-01-01

183

Quantitative clinical nonpulsatile and localized visible light oximeter: design of the T-Stat tissue oximeter  

NASA Astrophysics Data System (ADS)

We report the development of a general, quantitative, and localized visible light clinical tissue oximeter, sensitive to both hypoxemia and ischemia. Monitor design and operation were optimized over four instrument generations. A range of clinical probes were developed, including non-contact wands, invasive catheters, and penetrating needles with injection ports. Real-time data were collected (a) from probes, standards, and reference solutions to optimize each component, (b) from ex vivo hemoglobin solutions co-analyzed for StO2% and pO2 during deoxygenation, and (c) from normoxic human subject skin and mucosal tissue surfaces. Results show that (a) differential spectroscopy allows extraction of features with minimization of the effects of scattering, (b) in vitro oximetry produces a hemoglobin saturation binding curve of expected sigmoid shape and values, and (c) that monitoring human tissues allows real-time tissue spectroscopic features to be monitored. Unlike with near-infrared (NIRS) or pulse oximetry (SpO2%) methods, we found non-pulsatile, diffusion-based tissue oximetry (StO2%) to work most reliably for non-contact reflectance monitoring and for invasive catheter- or needle-based monitoring, using blue to orange light (475-600 nm). Measured values were insensitive to motion artifact. Down time was non-existent. We conclude that the T-Stat oximeter design is suitable for the collection of spectroscopic data from human subjects, and that the oximeter may have application in the monitoring of regional hemoglobin oxygen saturation in the capillary tissue spaces of human subjects.

Benaron, David A.; Parachikov, Ilian H.; Cheong, Wai-Fung; Friedland, Shai; Duckworth, Joshua L.; Otten, David M.; Rubinsky, Boris E.; Horchner, Uwe B.; Kermit, Eben L.; Liu, Frank W.; Levinson, Carl J.; Murphy, Aileen L.; Price, John W.; Talmi, Yair; Weersing, James P.

2003-07-01

184

HomoSAR: Bridging comparative protein modeling with quantitative structural activity relationship to design new peptides.  

PubMed

Peptides play significant roles in the biological world. To optimize activity for a specific therapeutic target, peptide library synthesis is inevitable; which is a time consuming and expensive. Computational approaches provide a promising way to simply elucidate the structural basis in the design of new peptides. Earlier, we proposed a novel methodology termed HomoSAR to gain insight into the structure activity relationships underlying peptides. Based on an integrated approach, HomoSAR uses the principles of homology modeling in conjunction with the quantitative structural activity relationship formalism to predict and design new peptide sequences with the optimum activity. In the present study, we establish that the HomoSAR methodology can be universally applied to all classes of peptides irrespective of sequence length by studying HomoSAR on three peptide datasets viz., angiotensin-converting enzyme inhibitory peptides, CAMEL-s antibiotic peptides, and hAmphiphysin-1 SH3 domain binding peptides, using a set of descriptors related to the hydrophobic, steric, and electronic properties of the 20 natural amino acids. Models generated for all three datasets have statistically significant correlation coefficients (r(2) ) and predictive r2 (rpred?2) and cross validated coefficient ( qLOO?2). The daintiness of this technique lies in its simplicity and ability to extract all the information contained in the peptides to elucidate the underlying structure activity relationships. The difficulties of correlating both sequence diversity and variation in length of the peptides with their biological activity can be addressed. The study has been able to identify the preferred or detrimental nature of amino acids at specific positions in the peptide sequences. © 2013 Wiley Periodicals, Inc. PMID:24105965

Borkar, Mahesh R; Pissurlenkar, Raghuvir R S; Coutinho, Evans C

2013-09-18

185

Alcohol mixed with energy drinks: methodology and design of the Utrecht Student Survey.  

PubMed

This paper describes the methodology of the Utrecht Student Survey. This online survey was conducted in June 2011 by 6002 students living in Utrecht, The Netherlands. The aim of the survey was to determine the potential impact of mixing alcoholic beverages with energy drinks on overall alcohol consumption and alcohol-related consequences. In contrast to most previous surveys conducted on this topic, the current survey used a more appropriate within-subject design, comparing the alcohol consumption of individuals who consume alcohol mixed with energy drinks on occasions. Specifically, a comparison was conducted to examine the occasions during which these individuals consume this mixture versus occasions during which they consume alcohol alone. In addition to energy drinks, the consumption of other non-alcoholic mixers was also assessed when combined with alcoholic beverages. Furthermore, the reasons for consuming energy drinks alone or in combination with alcohol were investigated, and were compared to reasons for mixing alcohol with other non-alcoholic beverages. Finally, personality characteristics and the level of risk-taking behavior among the individuals were also assessed to explore their relationship with alcohol consumption. The Utrecht Student Survey will be replicated in the USA, Australia, and the UK. Results will be pooled, but also examined for possible cross-cultural differences. PMID:23118547

de Haan, Lydia; de Haan, Hein A; Olivier, Berend; Verster, Joris C

2012-10-19

186

Alcohol mixed with energy drinks: methodology and design of the Utrecht Student Survey  

PubMed Central

This paper describes the methodology of the Utrecht Student Survey. This online survey was conducted in June 2011 by 6002 students living in Utrecht, The Netherlands. The aim of the survey was to determine the potential impact of mixing alcoholic beverages with energy drinks on overall alcohol consumption and alcohol-related consequences. In contrast to most previous surveys conducted on this topic, the current survey used a more appropriate within-subject design, comparing the alcohol consumption of individuals who consume alcohol mixed with energy drinks on occasions. Specifically, a comparison was conducted to examine the occasions during which these individuals consume this mixture versus occasions during which they consume alcohol alone. In addition to energy drinks, the consumption of other non-alcoholic mixers was also assessed when combined with alcoholic beverages. Furthermore, the reasons for consuming energy drinks alone or in combination with alcohol were investigated, and were compared to reasons for mixing alcohol with other non-alcoholic beverages. Finally, personality characteristics and the level of risk-taking behavior among the individuals were also assessed to explore their relationship with alcohol consumption. The Utrecht Student Survey will be replicated in the USA, Australia, and the UK. Results will be pooled, but also examined for possible cross-cultural differences.

de Haan, Lydia; de Haan, Hein A; Olivier, Berend; Verster, Joris C

2012-01-01

187

The C-Band All-Sky Survey: instrument design, status, and first-look data  

NASA Astrophysics Data System (ADS)

The C-Band All-Sky Survey (C-BASS) aims to produce sensitive, all-sky maps of diffuse Galactic emission at 5 GHz in total intensity and linear polarization. These maps will be used (with other surveys) to separate the several astrophysical components contributing to microwave emission, and in particular will allow an accurate map of synchrotron emission to be produced for the subtraction of foregrounds from measurements of the polarized Cosmic Microwave Background. We describe the design of the analog instrument, the optics of our 6.1 m dish at the Owens Valley Radio Observatory, the status of observations, and first-look data.

King, Oliver G.; Copley, Charles; Davies, Rod; Davis, Richard; Dickinson, Clive; Hafez, Yaser A.; Holler, Christian; John, Jaya John; Jonas, Justin L.; Jones, Michael E.; Leahy, J. Patrick; Muchovej, Stephen J. C.; Pearson, Timothy J.; Readhead, Anthony C. S.; Stevenson, Matthew A.; Taylor, Angela C.

2010-07-01

188

The Design of a Novel Survey for Small Objects in the Solar System  

SciTech Connect

We evaluated several concepts for a new survey for small objects in the Solar System. We designed a highly novel survey for comets in the outer region of the Solar System, which exploits the occultations of relatively bright stars to infer the presence of otherwise extremely faint objects. The populations and distributions of these objects are not known; the uncertainties span orders of magnitude! These objects are important scientifically as probes of the primordial solar system, and programmatically now that major investments may be made in the possible mitigation of the hazard of asteroid or comet collisions with the Earth.

Alcock, C.; Chen, W.P.; de Pater, I.; Lee, T.; Lissauer, J.; Rice, J.; Liang, C.; Cook, K.; Marshall, S.; Akerlof, C.

2000-08-21

189

Optimal sample allocation for design-consistent regression in a cancer services survey when design variables are known for aggregates.  

PubMed

We consider optimal sampling rates in element-sampling designs when the anticipated analysis is survey-weighted linear regression and the estimands of interest are linear combinations of regression coefficients from one or more models. Methods are first developed assuming that exact design information is available in the sampling frame and then generalized to situations in which some design variables are available only as aggregates for groups of potential subjects, or from inaccurate or old data. We also consider design for estimation of combinations of coefficients from more than one model. A further generalization allows for flexible combinations of coefficients chosen to improve estimation of one effect while controlling for another. Potential applications include estimation of means for several sets of overlapping domains, or improving estimates for subpopulations such as minority races by disproportionate sampling of geographic areas. In the motivating problem of designing a survey on care received by cancer patients (the CanCORS study), potential design information included block-level census data on race/ethnicity and poverty as well as individual-level data. In one study site, an unequal-probability sampling design using the subjectss residential addresses and census data would have reduced the variance of the estimator of an income effect by 25%, or by 38% if the subjects' races were also known. With flexible weighting of the income contrasts by race, the variance of the estimator would be reduced by 26% using residential addresses alone and by 52% using addresses and races. Our methods would be useful in studies in which geographic oversampling by race-ethnicity or socioeconomic characteristics is considered, or in any study in which characteristics available in sampling frames are measured with error. PMID:19680463

Zaslavsky, Alan M; Zheng, Hui; Adams, John

2008-06-01

190

Estimation bias of different design and analytical strategies in dual-frame telephone surveys: an empirical evaluation  

Microsoft Academic Search

Dual-frame survey designs have become increasingly popular in large-scale telephone surveys. This is due to the lack of coverage of the traditional landline survey design and the escalating use of cell phones in recent years. Several estimation strategies have been proposed and their properties have been discussed under ideal scenarios, including pseudo-maximum-likelihood estimation, single-frame estimation, and simple composite estimation [C.J.

Bo Lu; Juan Peng; Timothy Sahr

2012-01-01

191

Old and new cluster designs in emergency field surveys: in search of a one-fits-all solution  

Microsoft Academic Search

INTRODUCTION: Cluster surveys are frequently used to measure key nutrition and health indicators in humanitarian emergencies. The survey design of 30 clusters of 7 children (30 × 7) was initially proposed by the World Health Organization for measuring vaccination coverage, and later a design of 30 clusters of 30 children (30 × 30) was introduced to measure acute malnutrition in

Oleg O Bilukha

2008-01-01

192

Preliminary design of the Wide-Field Infrared Survey Explorer (WISE)  

NASA Astrophysics Data System (ADS)

The Wide-field Infrared Survey Explorer (WISE), a NASA MIDEX mission, will survey the entire sky in four bands from 3.3 to 23 microns with a sensitivity 1000 times greater than the IRAS survey. The WISE survey will extend the Two Micron All Sky Survey into the thermal infrared and will provide an important catalog for the James Webb Space Telescope. Using 10242 HgCdTe and Si:As arrays at 3.3, 4.7, 12 and 23 microns, WISE will find the most luminous galaxies in the universe, the closest stars to the Sun, and it will detect most of the main belt asteroids larger than 3 km. The single WISE instrument consists of a 40 cm diamond-turned aluminum afocal telescope, a two-stage solid hydrogen cryostat, a scan mirror mechanism, and reimaging optics giving 5" resolution (full-width-half-maximum). The use of dichroics and beamsplitters allows four color images of a 47'x47' field of view to be taken every 8.8 seconds, synchronized with the orbital motion to provide total sky coverage with overlap between revolutions. WISE will be placed into a Sun-synchronous polar orbit on a Delta 7320-10 launch vehicle. The WISE survey approach is simple and efficient. The three-axis-stabilized spacecraft rotates at a constant rate while the scan mirror freezes the telescope line of sight during each exposure. WISE is currently in its Preliminary Design Phase, with the mission Preliminary Design Review scheduled for July, 2005. WISE is scheduled to launch in mid 2009; the project web site can be found at www.wise.ssl.berkeley.edu.

Mainzer, Amanda K.; Eisenhardt, Peter; Wright, Edward L.; Liu, Feng-Chuan; Irace, William; Heinrichsen, Ingolf; Cutri, Roc; Duval, Valerie

2005-08-01

193

Designing and Assessing Numeracy Training for Journalists: Toward Improving Quantitative Reasoning Among Media Consumers  

Microsoft Academic Search

Abstract: Journalists inform multitudes of people. However, they sometimes over-focus on the narrative, failing to integrate critical quantitative information effectively. The Numerically Driven Inferencing (NDI) paradigm’s research(e.g., Ranney et al., 2001; Munnich, Ranney, & Appel, 2004) suggested that a curricular module highlighting evidential\\/scientific thinking might enhance reporters’ quantitative and analytic skills. The resulting controlled experiment involved 55 first-year journalism graduate

Michael Andrew Ranney; Luke F. Rinne; Louise Yarnall; Edward Munnich; Luke Miratrix; Patricia Schank

2008-01-01

194

Electronic Survey Methodology: A Case Study in Reaching Hard-to-Involve Internet Users  

Microsoft Academic Search

Using the Internet to conduct quantitative research presents challenges not found in conventional research. Paper-based survey quality criteria cannot be completely adapted to electronic formats. Electronic surveys have distinctive technological, de- mographic, and response characteristics that affect their design, use, and implemen- tation. Survey design, participant privacy and confidentiality, sampling and subject solicitation, distribution methods and response rates, and survey

Dorine Andrews; Blair Nonnecke; Jennifer Preece

2003-01-01

195

The National Comorbidity Survey Adolescent Supplement (NCS-A): II. Overview and Design  

PubMed Central

OBJECTIVE To present an overview of the design and field procedures of the National Comorbidity Survey Replication Adolescent Supplement (NCS-A) METHOD The NCS-A is a nationally representative face-to-face household survey of the prevalence and correlates of DSM-IV mental disorders among US adolescents (ages 13–17) that was carried out between February 2001 and January 2004 by the Survey Research Center of the Institute for Social Research at the University of Michigan. The sample was based on a dual-frame design that included 904 adolescent residents of the households that participated in the National Comorbidity Survey Replication (85.9% response rate) and 9244 adolescent students selected from a representative sample of 320 schools in the same nationally representative sample of counties as the NCS-R (74.7% response rate). RESULTS Comparisons of sample and population distributions on Census socio-demographic variables and, in the school sample, school characteristics documented only minor differences that were corrected with post-stratification weighting. Comparisons of DSM-IV disorder prevalence estimates among household vs. school sample respondents in counties that differed in the use of replacement schools for originally selected schools that refused to participate showed that the use of replacement schools did not introduce bias into prevalence estimates. CONCLUSIONS The NCS-A is a rich nationally representative dataset that will substantially increase understanding of the mental health and well-being of adolescents in the United States.

Kessler, Ronald C.; Avenevoli, Shelli; Costello, E. Jane; Green, Jennifer Greif; Gruber, Michael J.; Heeringa, Steven; Merikangas, Kathleen R.; Pennell, Beth-Ellen; Sampson, Nancy A.; Zaslavsky, Alan M.

2009-01-01

196

Designing a stated choice survey to study food product eco-labels  

Microsoft Academic Search

Eco-labels were first introduced to the U.S. in the early 1970s to certify organic fruits and vegetables. These labels have evolved since then to represent various aspects of sustainable agricultural practices, environmental health, wildlife preser- vation, etc. This article describes the design of a large-scale stated choice survey to investigate consumer reactions to eco- label characteristics such as price premiums,

Iain Pardoe

197

Design of Stated Preference Surveys: Is There More to Learn from Behavioral Economics?  

Microsoft Academic Search

We discuss the design of stated preference (SP) surveys in light of findings in behavioral economics such as context dependence\\u000a of preferences, learning, and differences between revealed and normative preferences. More specifically, we discuss four different\\u000a areas: (1) revealed and normative preferences, (2) learning and constructed preferences, (3) context dependence, and (4) hypothetical\\u000a bias. We argue that SP methods would

Fredrik Carlsson

2010-01-01

198

R&M task automation macro capabilities computerization of RM&S in design survey results  

Microsoft Academic Search

Summary data from two industry surveys and data provided by workshop attendees via an R&M task automation questionnaire are presented that indicate the status of automation within industry from the respondents' viewpoint. An overview of the computer-aided technologies being used in industry for the development, design, and manufacture of weapon systems is provided, and a general baseline of industry-implemented computer-aided

D. R. Hoffman

1988-01-01

199

A Survey of Knowledge-Based Systems for Computer-Aided Control System Design  

Microsoft Academic Search

During the last few years several knowledge-based systems for Computer-Aided Control System Design (CACSD) have been built. This paper provides a review of those artificial intelligence (AI) programming techniques which support the construction of these knowledge-based systems, surveys some of the systems built thus far, and comments on the characteristics that one should require of software tools in order to

John R. James

1987-01-01

200

Surveys  

Cancer.gov

Behavioral Risk Factor Surveillance System (BRFSS) The world's largest, on-going telephone health survey system, tracking health conditions and risk behaviors in the United States yearly since 1984. Currently, data are collected monthly in all 50 states, the District of Columbia, Puerto Rico, the U.S. Virgin Islands, and Guam.

201

Radiologists' requirements for primary diagnosis workstations: preliminary results of task-based design surveys  

NASA Astrophysics Data System (ADS)

There has been a tremendous amount of effort put into the design of diagnostic radiology workstations; however, few workstations have been clinically accepted. Among the requirements for a clinically acceptable workstation are good image quality, a well designed user-interface, and access to all relevant diagnostic information. The user-interface design should reflect radiologist's film reading habits and encourage new reading methods that take advantage of the electronic environment. As part of our effort to improve diagnostic workstation design, we surveyed radiologists in the UCLA Department of Radiological Sciences. Sixteen radiologists from the fields of pediatric, genitourinary, thoracic, and neuroradiology participated in the initial survey. We asked their opinions regarding our PACS infrastructure performance and our existing diagnostic workstations. We also asked them to identify certain pathologies that they found to be less evident on workstations as compared to film. We are using this information to determine the current limitations of diagnostic workstations and to develop a user interface design that addresses the clinical requirements of a busy teritiary care medical center the radiologists who use it.

Hohman, Suzan A.; Johnson, Sandra L.; Valentino, Daniel J.; Taira, Ricky K.; Manzo, William A.

1994-05-01

202

New facility design and work method for the quantitative fit testing laboratory. Master's thesis  

Microsoft Academic Search

The United States Air Force School of Aerospace Medicine (USAFSAM) tests the quantitative fit of masks which are worn by military personnel during nuclear, biological, and chemical warfare. Subjects are placed in a Dynatech-Frontier Fit Testing Chamber, salt air is fed into the chamber, and samples of air are drawn from the mask and the chamber. The ratio of salt

1989-01-01

203

Wall finish selection in hospital design: a survey of facility managers.  

PubMed

Objective: This paper seeks to analyze healthcare facility managers' perceptions regarding the materials used for interior wall finishes and the criteria used to select them. It also examines differences in wall finish materials and the selection process in three major hospital spaces: emergency, surgery, and in-patient units. These findings are compared with healthcare designers' perceptions on similar issues, as currently documented in the literature.Background: Hospital design and the materials used for hospital construction have a considerable effect on the environment and health of patients. A 2002 survey revealed which characteristics healthcare facility designers consider when selecting materials for healthcare facilities; however, no similar study has examined the views of facility managers on building finish selection.Methods: A 22-question survey questionnaire was distributed to 210 facility managers of metropolitan, for-profit hospitals in Texas; IRB approval was obtained. Respondents were asked to rank 10 interior wall finish materials and 11 selection criteria for wall finishes. Data from 48 complete questionnaires were analyzed using descriptive statistics and nonparametric statistical analysis methods.Results: The study found no statistically significant differences in terms of wall finish materials or the characteristics for material selection in the three major spaces studied. It identified facility managers' four most-preferred wall finish materials and the five-most preferred characteristics, with a statistical confidence level of greater than 95%.Conclusions: The paper underscores the importance of incorporating all perspectives: facility designers and facility managers should work together toward achieving common organizational goals. PMID:23154904

Lavy, Sarel; Dixit, Manish K

2012-01-01

204

Simulation of complete seismic surveys for evaluation of experiment design and processing  

SciTech Connect

Synthesis of complete seismic survey data sets allows analysis and optimization of all stages in an acquisition/processing sequence. The characteristics of available survey designs, parameter choices, and processing algorithms may be evaluated prior to field acquisition to produce a composite system in which all stages have compatible performance; this maximizes the cost effectiveness for a given level of accuracy, or for targets with specific characteristics. Data sets synthesized for three salt structures provide representative comparisons of time and depth migration, post-stack and prestack processing, and illustrate effects of varying recording aperture and shot spacing, iterative focusing analysis, and the interaction of migration algorithms with recording aperture. A final example demonstrates successful simulation of both 2-D acquisition and processing of a real data line over a salt pod in the Gulf of Mexico.

Oezdenvar, T.; McMechan, G.A. [Univ. of Texas, Richardson, TX (United States). Center for Lithospheric Studies; Chaney, P. [ORYX Energy Co., Dallas, TX (United States)

1996-03-01

205

Rationale, design, and analysis of combined Brazilian household budget survey and food intake individual data  

PubMed Central

Background Data on food intake at the individual level and its statistical distribution in population groups defined by age, gender, or geographic areas are important in planning public health and nutrition programs. However, individual-based surveys in representative population samples are expensive to perform. Methods/Design In Brazil, an individual based survey is under consideration to be conducted alongside the household budget survey (HBS), which will be carried out in 2008–2009. This paper presents the methodological framework of dietary data collection and indicates the directions to combining both sources of data. The 2008–2009 Brazilian HBS sample will include 60,000 households. Of the selected HBS households, 30% will be randomly sampled to gather data on individual food intake. Therefore, individual dietary intake data is expected to be gathered for 70,000 individuals. Data collection procedures will comprise: completion of a diary with information regarding food purchases during a seven-day period; registration of all items consumed during two non-consecutive days for all 10 year-old or older members of the household. The sample will be large enough to capture the variation between individuals, and the two records will assure the estimation of the variation within individuals for food groups, energy and nutrients. Data on individual dietary intake and food family budget will be stratified by the five regions of the country and by rural or urban. A pilot study has been conducted in two states, and it indicated that combining individual and budgetary data in a survey is feasible. Discussion This kind of study will allow us to estimate correlations between individual intake and household purchases, overcoming the limitations of individual dietary surveys, and enhancing the HBS with information on eating out and intra-familiar distribution of food.

Sichieri, R; Pereira, RA; Martins, A; Vasconcellos, ABPA; Trichopoulou, A

2008-01-01

206

Fiber-optic bundle design for quantitative fluorescence measurement from tissue  

Microsoft Academic Search

We demonstrate a new design for a fiber-optic bundle to measure fluorescence signals from tissue. In this design, the intensity of the signal is not significantly affected by the medium's absorption and scattering coefficients and hence depends only on the fluorophore's properties. Monte Carlo simulations of light scattering were used for designing and verifying the results obtained. The fiber-optic bundle

Brian W. Pogue; Gregory Burke

1998-01-01

207

Designing, Testing, and Validating an Attitudinal Survey on an Environmental Topic: A Groundwater Pollution Survey Instrument for Secondary School Students  

ERIC Educational Resources Information Center

|Research in environmental attitudes' assessment has significantly increased in recent years. The development of specific attitude scales for specific environmental problems has often been proposed. This paper describes the Groundwater Pollution Test (GPT), a 19-item survey instrument using a Likert-type scale. The survey has been used with…

Lacosta-Gabari, Idoya; Fernandez-Manzanal, Rosario; Sanchez-Gonzalez, Dolores

2009-01-01

208

Digital Autoland Control Laws Using Quantitative Feedback Theory and Direct Digital Design  

Microsoft Academic Search

Autoland controllers are prevalent for both large and small\\/micro unmanned aerial vehicles, but very few are available for medium-sized unmanned air vehicles. These vehicles tend to have limited sensors and instrumentation, yet must possess good performance in the presence of modeling uncertainties and exogenous inputs such as turbulence. Quantitative feedback theory has been reported in the literature for inner-loop control

Thomas Wagner; John Valasek

2007-01-01

209

Quantitative Comparison of Minimum Inductance and Minimum Power Algorithms for the Design of Shim Coils for Small Animal Imaging  

PubMed Central

High-performance shim coils are required for high-field magnetic resonance imaging and spectroscopy. Complete sets of high-power and high-performance shim coils were designed using two different methods: the minimum inductance and the minimum power target field methods. A quantitative comparison of shim performance in terms of merit of inductance (ML) and merit of resistance (MR) was made for shim coils designed using the minimum inductance and the minimum power design algorithms. In each design case, the difference in ML and the difference in MR given by the two design methods was <15%. Comparison of wire patterns obtained using the two design algorithms show that minimum inductance designs tend to feature oscillations within the current density; while minimum power designs tend to feature less rapidly varying current densities and lower power dissipation. Overall, the differences in coil performance obtained by the two methods are relatively small. For the specific case of shim systems customized for small animal imaging, the reduced power dissipation obtained when using the minimum power method is judged to be more significant than the improvements in switching speed obtained from the minimum inductance method.

HUDSON, PARISA; HUDSON, STEPHEN D.; HANDLER, WILLIAM B.; SCHOLL, TIMOTHY J.; CHRONIK, BLAINE A.

2010-01-01

210

DESIGN AND APPLICATION OF A STRATIFIED UNEQUAL-PROBABILITY STREAM SURVEY IN THE MID-ATLANTIC COASTAL PLAIN  

EPA Science Inventory

A stratified random sample with unequal probability selection within strata was used to design a multipurpose survey of headwater watersheds in the Mid-Atlantic Coastal Plain. Objectives for data from the survey include unbiased estimates of regional headwater watershed condition...

211

STATISTICAL BASIS FOR THE DESIGN AND INTERPRETATION OF THE NATIONAL SURFACE WATER SURVEY. PHASE 1. LAKES AND STREAMS  

EPA Science Inventory

The primary objectives of Phase I of the National Surface Water Survey were to determine the number of acidic or potentially acidic lakes and streams, their location, and their physical and chemical characteristics. To meet these objectives, a statistically designed survey was im...

212

Design Effects and Generalized Variance Functions for the 1990-91 Schools and Staffing Survey (SASS). Volume II. Technical Report.  

ERIC Educational Resources Information Center

|This technical report provides the results of a study on the calculation and use of generalized variance functions (GVFs) and design effects for the 1990-91 Schools and Staffing Survey (SASS). The SASS is a periodic integrated system of sample surveys conducted by the National Center for Education Statistics (NCES) that produces sampling…

Salvucci, Sameena; And Others

213

Quantitative design and experimental validation for a single-molecule DNA nanodevice transformable among three structural states  

PubMed Central

In this work, we report the development and experimental validation of a coupled statistical thermodynamic model allowing prediction of the structural transitions executed by a novel DNA nanodevice, for quantitative operational design. The efficiency of target structure formation by this nanodevice, implemented with a bistable DNA molecule designed to transform between three distinct structures, is modeled by coupling the isolated equilibrium models for the individual structures. A peculiar behavior is predicted for this nanodevice, which forms the target structure within a limited temperature range by sensing thermal variations. The predicted thermal response is then validated via fluorescence measurements to quantitatively assess whether the nanodevice performs as designed. Agreement between predictions and experiment was substantial, with a 0.95 correlation for overall curve shape over a wide temperature range, from 30C to 90C. The obtained accuracy, which is comparable to that of conventional melting behavior prediction for DNA duplexes in isolation, ensures the applicability of the coupled model for illustrating general DNA reaction systems involving competitive duplex formation. Finally, tuning of the nanodevice using the current model towards design of a thermal band pass filter to control chemical circuits, as a novel function of DNA nanodevices is proposed.

Komiya, Ken; Yamamura, Masayuki; Rose, John A.

2010-01-01

214

Quantitative design and experimental validation for a single-molecule DNA nanodevice transformable among three structural states.  

PubMed

In this work, we report the development and experimental validation of a coupled statistical thermodynamic model allowing prediction of the structural transitions executed by a novel DNA nanodevice, for quantitative operational design. The efficiency of target structure formation by this nanodevice, implemented with a bistable DNA molecule designed to transform between three distinct structures, is modeled by coupling the isolated equilibrium models for the individual structures. A peculiar behavior is predicted for this nanodevice, which forms the target structure within a limited temperature range by sensing thermal variations. The predicted thermal response is then validated via fluorescence measurements to quantitatively assess whether the nanodevice performs as designed. Agreement between predictions and experiment was substantial, with a 0.95 correlation for overall curve shape over a wide temperature range, from 30 C to 90 C. The obtained accuracy, which is comparable to that of conventional melting behavior prediction for DNA duplexes in isolation, ensures the applicability of the coupled model for illustrating general DNA reaction systems involving competitive duplex formation. Finally, tuning of the nanodevice using the current model towards design of a thermal band pass filter to control chemical circuits, as a novel function of DNA nanodevices is proposed. PMID:20385575

Komiya, Ken; Yamamura, Masayuki; Rose, John A

2010-04-12

215

Survey of injury sources for a trampoline with equipment hazards designed out  

PubMed Central

Aim In Australia, trampolines contribute approximately one-quarter of all childhood play-equipment injuries. The purpose of this study was to gather and evaluate injury data from a nontraditional, ‘soft-edged’, consumer trampoline in which the equipment injury sources have been designed out. Methods A survey was undertaken in Queensland and New South Wales. The manufacturer of the nontraditional trampoline provided the University of Technology, Sydney, with their Australian customer database. Injury data were gathered in a pilot study by phone interview, then in a full study through an email survey. Results from 3817 respondents were compared with earlier Australian and US data from traditional trampolines gathered from emergency departments. Results A significantly lower proportion of the injuries caused by falling off or striking the equipment was found for this new design when compared with traditional trampolines both in Australia and in the USA. The age of children being injured on trampolines in Australia was found to be markedly lower than in North America. Conclusions This research indicates that with appropriate design the more severe injuries on traditional trampolines can be significantly reduced.

Eager, David; Scarrott, Carl; Nixon, Jim; Alexander, Keith

2012-01-01

216

Cigarette pack design and adolescent smoking susceptibility: a cross-sectional survey  

PubMed Central

Objectives To compare adolescents’ responses to three different styles of cigarette packaging: novelty (branded packs designed with a distinctive shape, opening style or bright colour), regular (branded pack with no special design features) and plain (brown pack with a standard shape and opening and all branding removed, aside from brand name). Design Cross-sectional in-home survey. Setting UK. Participants Random location quota sample of 1025 never smokers aged 11–16?years. Main outcome measures Susceptibility to smoking and composite measures of pack appraisal and pack receptivity derived from 11 survey items. Results Mean responses to the three pack types were negative for all survey items. However, ‘novelty’ packs were rated significantly less negatively than the ‘regular’ pack on most items, and the novelty and regular packs were rated less negatively than the ‘plain’ pack. For the novelty packs, logistic regressions, controlling for factors known to influence youth smoking, showed that susceptibility was associated with positive appraisal and also receptivity. For example, those receptive to the innovative Silk Cut Superslims pack were more than four times as likely to be susceptible to smoking than those not receptive to this pack (AOR=4.42, 95% CI 2.50 to 7.81, p<0.001). For the regular pack, an association was found between positive appraisal and susceptibility but not with receptivity and susceptibility. There was no association with pack appraisal or receptivity for the plain pack. Conclusions Pack structure (shape and opening style) and colour are independently associated, not just with appreciation of and receptivity to the pack, but also with susceptibility to smoke. In other words, those who think most highly of novelty cigarette packaging are also the ones who indicate that they are most likely to go on to smoke. Plain packaging, in contrast, was found to directly reduce the appeal of smoking to adolescents.

Ford, Allison; MacKintosh, Anne Marie; Moodie, Crawford; Richardson, Sol; Hastings, Gerard

2013-01-01

217

Overview of Test Design: A Survey of Black Box Software Testing Techniques  

NSDL National Science Digital Library

This subset of the Black Box Software Testing collection includes resources for a broad survey of software test technique noticing different objectives, strengths, and blind spots. Materials present a few techniques more closely than the rest. Students will: gain familiarity with a variety of test techniques; learn structures for comparing objectives and strengths of different test techniques; use the Heuristic Test Strategy Model for test planning and design; and use concept mapping tools for test planning. Resources include lecture videos, slides, activities, suggested readings, and study guide materials.

Kaner, Cem; Fiedler, Rebecca L.

2011-06-01

218

Design of the South East Asian Nutrition Survey (SEANUTS): a four-country multistage cluster design study.  

PubMed

Nutrition is a well-known factor in the growth, health and development of children. It is also acknowledged that worldwide many people have dietary imbalances resulting in over- or undernutrition. In 2009, the multinational food company FrieslandCampina initiated the South East Asian Nutrition Survey (SEANUTS), a combination of surveys carried out in Indonesia, Malaysia, Thailand and Vietnam, to get a better insight into these imbalances. The present study describes the general study design and methodology, as well as some problems and pitfalls encountered. In each of these countries, participants in the age range of 0·5-12 years were recruited according to a multistage cluster randomised or stratified random sampling methodology. Field teams took care of recruitment and data collection. For the health status of children, growth and body composition, physical activity, bone density, and development and cognition were measured. For nutrition, food intake and food habits were assessed by questionnaires, whereas in subpopulations blood and urine samples were collected to measure the biochemical status parameters of Fe, vitamins A and D, and DHA. In Thailand, the researchers additionally studied the lipid profile in blood, whereas in Indonesia iodine excretion in urine was analysed. Biochemical data were analysed in certified laboratories. Study protocols and methodology were aligned where practically possible. In December 2011, data collection was finalised. In total, 16,744 children participated in the present study. Information that will be very relevant for formulating nutritional health policies, as well as for designing innovative food and nutrition research and development programmes, has become available. PMID:24016763

Schaafsma, Anne; Deurenberg, Paul; Calame, Wim; van den Heuvel, Ellen G H M; van Beusekom, Christien; Hautvast, Jo; Sandjaja; Bee Koon, Poh; Rojroongwasinkul, Nipa; Le Nguyen, Bao Khanh; Parikh, Panam; Khouw, Ilse

2013-09-01

219

Preliminary Survey Report: Pre-Intervention Quantitative Risk Factor Analysis for Ship Construction Processes at JEFFBOAT LLC, Jeffersonville, Indiana.  

National Technical Information Service (NTIS)

A pre-intervention quantitative risk factor analysis was performed at various shops and locations within Jeffboat LLC, a builder of river barges in Indiana, as a method to identify and quantify risk factors that workers may be exposed to in the course of ...

S. J. Hudock S. J. Wurzelbacher O. E. Johnston

2000-01-01

220

The impact of survey design modifications on health insurance coverage estimates in a National Longitudinal Health Care Survey  

Microsoft Academic Search

National health insurance coverage estimates for the overall population and specific population subgroups are critical to\\u000a policymakers and others concerned with access to medical care and the cost and sources of payment for that care. The Medical\\u000a Expenditure Panel Survey (MEPS) is one of the core health care surveys in the United States that serves as a primary source\\u000a for

Steven B. Cohen; Trena Ezzati-Rice; Marc Zodet

2009-01-01

221

Some New Three Level Designs for the Study of Quantitative Variables  

Microsoft Academic Search

A class of incomplete three level factorial designs useful for estimating the coefficients in a second degree graduating polynomial are described. The designs either meet, or approximately meet, the criterion of rotatability and for the most part can be orthogonally blocked. A fully worked example is included.

G. E. P. Box; D. W. Behnken

1960-01-01

222

A high-definition design structure matrix (HDDSM) for the quantitative assessment of product architecture  

Microsoft Academic Search

As the field of engineering design matures, new techniques and methods are continuously being developed to conceptualise and analyse product architecture. These techniques and methods require product representations with higher sophistication, granularity, and fidelity. To address these needs, the high-definition design structure matrix (HDDSM) is presented as a new and evolved product representation model that captures a spectrum of interactions

Andrew Harold Tilstra; Carolyn Conner Seepersad; Kristin L. Wood

2012-01-01

223

Survey of alternative gas turbine engine and cycle design. Final report  

SciTech Connect

In the period of the 1940's to 1960's much experimentation was performed in the areas of intercooling, reheat, and recuperation, as well as the use of low-grade fuels in gas turbines. The Electric Power Research Institute (EPRI), in an effort to document past experience which can be used as the basis for current design activities, commissioned a study to document alternate cycles and components used in gas turbine design. The study was performed by obtaining the important technical and operational criteria of the cycles through a literature search of published documents, articles, and papers. Where possible the information was augmented through dialogue with persons associated with those cycles and with the manufacturers. The survey indicated that many different variations of the simple open-cycle gas turbine plant were used. Many of these changes resulted in increases in efficiency over the low simple-cycle efficiency of that period. Metallurgy, as well as compressor and turbine design, limited the simple-cycle efficiency to the upper teens. The cycle modifications increased those efficiencies to the twenties and thirties. Advances in metallurgy as well as compressor and turbine design, coupled with the decrease in flue cost, stopped the development of these complex cycles. Many of the plants operated successfully for many years, and only because newer simple-cycle gas turbine plants and large steam plants had better heat rates were these units shutdown or put into stand-by service. 24 refs., 25 figs., 114 tabs.

Lukas, H.

1986-02-01

224

Enhancing Dillman's total design method for mailed\\/ telephone surveys using current technology to maximise cost-benefit ratios  

Microsoft Academic Search

Sample survey using mailed questionnaires is an important research tool often limited by low response rates. In the late 1970s, Dillman developed a highly successful approach to ensuring high response rates called the 'total design method' (TDM). TDM was designed prior to widespread use of personal computers, word processing, graphic software, laser printing and new commun ication methods. This experimental

Rita Axford; Barbara Carter; Gary Grunwald

1997-01-01

225

A Movable Phantom Design for Quantitative Evaluation of Motion Correction Studies on High Resolution PET Scanners  

Microsoft Academic Search

Head movements during brain imaging using high resolution positron emission tomography (PET) impair the image quality which, along with the improvement of the spatial resolution of PET scanners, in general, raises the importance of motion correction. Here, we present a new design for an automatic, movable, mechanical PET phantom to simulate patients' head movements while being scanned. This can be

Oline Vinter Olesen; Claus Svarer; Merence Sibomana; Sune H. Keller; Søren Holm; Jørgen A. Jensen; Flemming Andersen; Liselotte Højgaard

2010-01-01

226

Comprehension and Recall of Internet News: A Quantitative Study of Web Page Design.  

ERIC Educational Resources Information Center

|This experimental study examined the effects of multimedia on Internet news readers, in particular focusing on Web site design and its effect on comprehension and recall of news stories. Subjects (84 undergraduate students) viewed one of two versions of the same Web site--one with multimedia and one without. The Web site consisted of six stories…

Berry, D. Leigh

227

Framing the First and Second Intifada: A Longitudinal Quantitative Research Design Applied to the Flemish Press  

Microsoft Academic Search

Frame analysis, based on the hybrid frame concept, has proved difficult to translate into a comparative, replicable and longitudinal research design. This article seeks to place the study of media frames in a wider theoretical framework with special interest for the various methods of empirical research. The article focuses on a further operationalization of the law and order frame and

Annelore Deprez; Karin Raeymaeckers

2010-01-01

228

A Holistic Method to Design an Optimized Energy Scenario and Quantitatively Evaluate Promising Technologies for Implementation  

Microsoft Academic Search

In this article we focus on today's worldwide energy system, a fundamentally illogical and unsustainable system. Today, 85% of the world wide energy system depends on carbon-based fossil fuels. We develop a holistic method to analyze mankind's use of energy in a broad way and to design optimized, normative energy scenarios that conform to important scientific principles. The procedure is

Christian Deilmann; Klaus-Jürgen Bathe

2009-01-01

229

Comprehension and Recall of Internet News: A Quantitative Study of Web Page Design.  

ERIC Educational Resources Information Center

This experimental study examined the effects of multimedia on Internet news readers, in particular focusing on Web site design and its effect on comprehension and recall of news stories. Subjects (84 undergraduate students) viewed one of two versions of the same Web site--one with multimedia and one without. The Web site consisted of six stories…

Berry, D. Leigh

230

The COS-Halos Survey: Rationale, Design, and a Census of Circumgalactic Neutral Hydrogen  

NASA Astrophysics Data System (ADS)

We present the design and methods of the COS-Halos survey, a systematic investigation of the gaseous halos of 44 z = 0.15-0.35 galaxies using background QSOs observed with the Cosmic Origins Spectrograph aboard the Hubble Space Telescope. This survey has yielded 39 spectra of z em ~= 0.5 QSOs with S/N ~10-15 per resolution element. The QSO sightlines pass within 150 physical kpc of the galaxies, which span early and late types over stellar mass log M */M ? = 9.5-11.5. We find that the circumgalactic medium exhibits strong H I, averaging ~= 1 Å in Ly? equivalent width out to 150 kpc, with 100% covering fraction for star-forming galaxies and 75% covering for passive galaxies. We find good agreement in column densities between this survey and previous studies over similar range of impact parameter. There is weak evidence for a difference between early- and late-type galaxies in the strength and distribution of H I. Kinematics indicate that the detected material is bound to the host galaxy, such that >~ 90% of the detected column density is confined within ±200 km s–1 of the galaxies. This material generally exists well below the halo virial temperatures at T <~ 105 K. We evaluate a number of possible origin scenarios for the detected material, and in the end favor a simple model in which the bulk of the detected H I arises in a bound, cool, low-density photoionized diffuse medium that is generic to all L* galaxies and may harbor a total gaseous mass comparable to galactic stellar masses. Based on observations made with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with program GO11598.

Tumlinson, Jason; Thom, Christopher; Werk, Jessica K.; Prochaska, J. Xavier; Tripp, Todd M.; Katz, Neal; Davé, Romeel; Oppenheimer, Benjamin D.; Meiring, Joseph D.; Ford, Amanda Brady; O'Meara, John M.; Peeples, Molly S.; Sembach, Kenneth R.; Weinberg, David H.

2013-11-01

231

Designing smoking cessation services for school-age smokers: A survey and qualitative study.  

PubMed

To identify the preferred design characteristics of smoking cessation services for school-age smokers, we conducted focus groups with teenage smokers motivated to stop smoking. We surveyed all pupils in years 9-11 (aged 13-16) in a random sample of 10 schools in Nottinghamshire, United Kingdom, to elicit details of smoking behavior, and conducted 25 focus groups in 6 schools with current smokers who wanted to stop smoking. Of 4,065 pupils surveyed, 888 (22%) were current smokers, and 438 (50% of smokers) wanted to quit smoking. We sampled 226 of these individuals for focus group studies, and 135 (60%) participated. These participants were motivated to quit, and almost all had tried to do so but had found it too difficult. Many were aware of smoking cessation methods but had low perceptions of their effectiveness based on their own or others' poor experiences of these interventions, and few were aware of the possibility of professional cessation support. Given clear, nondirective information about interventions, participants reported a preference for confidential, nonjudgmental services delivered during school time by a trained counselor, allowed the option to attend with friends, and offered nicotine replacement therapy (NRT). School-age smokers in Nottinghamshire, United Kingdom, who are motivated to stop smoking have low knowledge and opinions of smoking cessation interventions. Our findings indicate that young smokers would favor school-based services offering confidential professional counseling and NRT. PMID:16920651

Molyneux, Andrew; Lewis, Sarah; Coleman, Tim; McNeill, Ann; Godfrey, Christine; Madeley, Richard; Britton, John

2006-08-01

232

Optical design and tolerances of wide-field imagers for astronomical survey  

NASA Astrophysics Data System (ADS)

We present three designs and tolerances of wide-field imagers (30´30 arc-minutes or larger) for astronomical surveying. Two infrared cameras (CPAPIR and PANORAMIX II) were designed for the 0.8-2.4 ?m band and a third one (WIRCAM) for the visible and near-infrared band extending from 410 nm to 950 nm. The cameras are installed on the telescopes of the Canada-France-Hawaii (Hawaii, USA) and Mont Mégantic Observatories (Québec, Canada). The three cameras are compact, use only spherical refractive components and have an internal pupil accessible for insertion of filtering components. A Lyot stop must be used in the infrared camera for background rejection. For PANORAMIX II, a set of filters is used at the internal pupil. Correction of the large off-axis aberrations generated by the telescopes, wide spectral coverage, material choices, cryogenic temperature and alignment were the main design challenges. Also, tolerancing was particularly critical for the infrared cameras because they are cryogenically cooled, thus forbidding adjustment of internal components. The cameras" theoretical performances are presented in terms of point-spread function, encircled energy and distortion.

Thibault, Simon; Lacoursière, Jean; Doucet, Michel; Wang, Min; Reecht, Jérôme

2003-11-01

233

Design and analysis of classifier learning experiments in bioinformatics: survey and case studies.  

PubMed

In many bioinformatics applications, it is important to assess and compare the performances of algorithms trained from data, to be able to draw conclusions unaffected by chance and are therefore significant. Both the design of such experiments and the analysis of the resulting data using statistical tests should be done carefully for the results to carry significance. In this paper, we first review the performance measures used in classification, the basics of experiment design and statistical tests. We then give the results of our survey over 1,500 papers published in the last two years in three bioinformatics journals (including this one). Although the basics of experiment design are well understood, such as resampling instead of using a single training set and the use of different performance metrics instead of error, only 21 percent of the papers use any statistical test for comparison. In the third part, we analyze four different scenarios which we encounter frequently in the bioinformatics literature, discussing the proper statistical methodology as well as showing an example case study for each. With the supplementary software, we hope that the guidelines we discuss will play an important role in future studies. PMID:22908127

Irsoy, Ozan; Yildiz, Olcay Taner; Alpaydin, Ethem

234

Technology transfer with system analysis, design, decision making, and impact (Survey-2000) in acute care hospitals in the United States.  

PubMed

This paper provides the results of the Survey-2000 measuring technology transfer for management information systems in health care. The relationships with systems approaches, user involvement, usersatisfaction, and decision-making were measured and are presented. The survey also measured the levels Internet and Intranet presents in acute care hospitals, which will be discussed in future articles. The depth of the survey includes e-commerce for both business to business and customers. These results are compared, where appropriate, with results from survey 1997 and changes are discussed. This information will provide benchmarks for hospitals to plan their network technology position and to set goals. This is the first of three articles based upon the results of the Srvey-2000. Readers are referred to a prior article by the author that discusses the survey design and provides a tutorial on technology transfer in acute care hospitals. PMID:11508906

Hatcher, M

2001-10-01

235

The Unique Optical Design of the CTI-II Survey Telescope  

NASA Astrophysics Data System (ADS)

The CCD/Transit Instrument with Innovative Instrumentation (CTI-II) is being developed for precision ground-based astrometric and photometric astronomical observations. The 1.8m telescope will be stationary, near-zenith pointing and will feature a CCD-mosaic array operated in time-delay and integrate (TDI) mode to image a continuous strip of the sky in five bands. The heart of the telescope is a Nasmyth-like bent-Cassegrain optical system optimized to produce near diffraction-limited images with near zero distortion over a circular1.42 deg field. The optical design includes an f/2.2 parabolic ULE primary with no central hole salvaged from the original CTI telescope and adds the requisite hyperbolic secondary, a folding flat and a highly innovative all-spherical, five lens corrector which includes three plano surfaces. The reflective and refractive portions of the design have been optimized as individual but interdependent systems so that the same reflective system can be used with slightly different refractive correctors. At present, two nearly identical corrector designs are being evaluated, one fabricated from BK-7 glass and the other of fused silica. The five lens corrector consists of an air-spaced triplet separated from follow-on air-spaced doublet. Either design produces 0.25 arcsecond images at 83% encircled energy with a maximum of 0.0005% distortion. The innovative five lens corrector design has been applied to other current and planned Cassegrain, RC and super RC optical systems requiring correctors. The basic five lens approach always results in improved performance compared to the original designs. In some cases, the improvement in image quality is small but includes substantial reductions in distortion. In other cases, the improvement in image quality is substantial. Because the CTI-II corrector is designed for a parabolic primary, it might be especially useful for liquid mirror telescopes. We describe and discuss the CTI-II optical design with respect to our survey and other potential astronomical applications.

Ackermann, Mark R.; McGraw, J. T.; MacFarlane, M.

2006-12-01

236

Using Design-based and Model-based method to study the relationship of asthma and smoking using longitudinal survey data  

Microsoft Academic Search

Survey data analysis using complex sampling designs ought to account for clustering, stratification and unequal probability of selection. Design-based and model-based methods are two commonly used routes taken to account for such survey designs. Several studies of cross-sectional survey designs have shown that these two approaches provide similar results when the model fits the data well. The present paper aims

S. Ghosh; P. Pahwa

237

Darting behavior: a quantitative movement pattern designed for discrimination and replicability in mouse locomotor behavior.  

PubMed

In the open-field behavior of rodents, Software for Exploring Exploration (SEE) can be used for an explicit design of behavioral endpoints with high genotype discrimination and replicability across laboratories. This ability is demonstrated here in the development of a measure for darting behavior. The behavior of two common mouse inbred strains, C57BL/6J (B6) and DBA/2J (D2), was analyzed across three different laboratories, and under the effect of cocaine or amphetamine. "Darting" was defined as having higher acceleration during progression segments while moving less during stops. D2 mice darted significantly more than B6 mice in each laboratory, despite being significantly less active. These differences were maintained following cocaine administration (up to 20mg/kg) and only slightly altered by amphetamine (up to 5mg/kg) despite a several fold increase in activity. The replicability of darting behavior was confirmed in additional experiments distinct from those used for its design. The strategy leading to the darting measure may be used to develop additional discriminative and replicable endpoints of open-field behavior. PMID:12798281

Kafkafi, Neri; Pagis, Michal; Lipkind, Dina; Mayo, Cheryl L; Bemjamini, Yoav; Golani, Ilan; Elmer, Gregory I

2003-06-16

238

Design and quantitative evaluation of a stance-phase controlled prosthetic knee joint for children.  

PubMed

The aims of this study were to demonstrate a theoretical basis for the design of a stance-phase controlled paediatric prosthetic knee joint, clinically test prototypes of the knee, and use a questionnaire to evaluate its efficacy. Biomechanical models were used to analyze the stance-phase control characteristics of the proposed knee, and those of three other commonly prescribed paediatric knee joint mechanisms, which were also the conventional knee joints used by the six participants of this study (mean age 10.8 years). A questionnaire pertaining to stance-phase control was designed and administered twice to each child; once for the evaluation of the prototype knee joint and once for the conventional knee joint. Stance-phase modeling results indicated decreased zones of instability for the new knee as compared to other paediatric knee joints. Questionnaire results revealed a decrease in the frequency of falls with the prototype compared to other knees, especially in highly active children. The children also reported worrying less about the knee collapsing during walking. No differences were evident for stance-phase stability during running, walking on uneven terrain, ambulating up and down stairs and inclines, fatigue, and types of activities performed. PMID:16425824

Andrysek, Jan; Naumann, Stephen; Cleghorn, William L

2005-12-01

239

Measuring Coverage in MNCH: Design, Implementation, and Interpretation Challenges Associated with Tracking Vaccination Coverage Using Household Surveys  

PubMed Central

Vaccination coverage is an important public health indicator that is measured using administrative reports and/or surveys. The measurement of vaccination coverage in low- and middle-income countries using surveys is susceptible to numerous challenges. These challenges include selection bias and information bias, which cannot be solved by increasing the sample size, and the precision of the coverage estimate, which is determined by the survey sample size and sampling method. Selection bias can result from an inaccurate sampling frame or inappropriate field procedures and, since populations likely to be missed in a vaccination coverage survey are also likely to be missed by vaccination teams, most often inflates coverage estimates. Importantly, the large multi-purpose household surveys that are often used to measure vaccination coverage have invested substantial effort to reduce selection bias. Information bias occurs when a child's vaccination status is misclassified due to mistakes on his or her vaccination record, in data transcription, in the way survey questions are presented, or in the guardian's recall of vaccination for children without a written record. There has been substantial reliance on the guardian's recall in recent surveys, and, worryingly, information bias may become more likely in the future as immunization schedules become more complex and variable. Finally, some surveys assess immunity directly using serological assays. Sero-surveys are important for assessing public health risk, but currently are unable to validate coverage estimates directly. To improve vaccination coverage estimates based on surveys, we recommend that recording tools and practices should be improved and that surveys should incorporate best practices for design, implementation, and analysis.

Cutts, Felicity T.; Izurieta, Hector S.; Rhoda, Dale A.

2013-01-01

240

Designing Input Fields for Non-Narrative Open-Ended Responses in Web Surveys  

PubMed Central

Web surveys often collect information such as frequencies, currency amounts, dates, or other items requiring short structured answers in an open-ended format, typically using text boxes for input. We report on several experiments exploring design features of such input fields. We find little effect of the size of the input field on whether frequency or dollar amount answers are well-formed or not. By contrast, the use of templates to guide formatting significantly improves the well-formedness of responses to questions eliciting currency amounts. For date questions (whether month/year or month/day/year), we find that separate input fields improve the quality of responses over single input fields, while drop boxes further reduce the proportion of ill-formed answers. Drop boxes also reduce completion time when the list of responses is short (e.g., months), but marginally increases completion time when the list is long (e.g., birth dates). These results suggest that non-narrative open questions can be designed to help guide respondents to provide answers in the desired format.

Couper, Mick P.; Kennedy, Courtney; Conrad, Frederick G.; Tourangeau, Roger

2012-01-01

241

A versatile method to design stem-loop primer-based quantitative PCR assays for detecting small regulatory RNA molecules.  

PubMed

Short regulatory RNA-s have been identified as key regulators of gene expression in eukaryotes. They have been involved in the regulation of both physiological and pathological processes such as embryonal development, immunoregulation and cancer. One of their relevant characteristics is their high stability, which makes them excellent candidates for use as biomarkers. Their number is constantly increasing as next generation sequencing methods reveal more and more details of their synthesis. These novel findings aim for new detection methods for the individual short regulatory RNA-s in order to be able to confirm the primary data and characterize newly identified subtypes in different biological conditions. We have developed a flexible method to design RT-qPCR assays that are very sensitive and robust. The newly designed assays were tested extensively in samples from plant, mouse and even human formalin fixed paraffin embedded tissues. Moreover, we have shown that these assays are able to quantify endogenously generated shRNA molecules. The assay design method is freely available for anyone who wishes to use a robust and flexible system for the quantitative analysis of matured regulatory RNA-s. PMID:23383094

Czimmerer, Zsolt; Hulvely, Julianna; Simandi, Zoltan; Varallyay, Eva; Havelda, Zoltan; Szabo, Erzsebet; Varga, Attila; Dezso, Balazs; Balogh, Maria; Horvath, Attila; Domokos, Balint; Torok, Zsolt; Nagy, Laszlo; Balint, Balint L

2013-01-31

242

Research Design Decisions: An Integrated Quantitative and Qualitative Model for Decision-Making Researchers (You Too Can Be Lord of the Rings).  

ERIC Educational Resources Information Center

Presents a concentric research design model based on need for research which transcends individuals' historic or experiential bias concerning choice of study design, tools, and data reduction strategies. Describes the following "rings": theory/knowledge orientation; theory versus applied research; quantitative versus qualitative research…

Geroy, Gary D.; Wright, Phillip C.

1997-01-01

243

Web-based surveys for corporate information gathering: a bias-reducing design framework  

Microsoft Academic Search

The cost effectiveness of Internet-based communications in the ever more fully networked business environment continues to drive the use of Web surveys for corporate information gathering. However, simply applying traditional survey techniques to the Web can result in significant shortcomings in the data so gathered. Recent research has been directed at these issues, within the context of Web surveys as

JAKE BURKEY; WILLIAM L. KUECHLER

2003-01-01

244

ParticipACTION: Baseline assessment of the 'new ParticipACTION': A quantitative survey of Canadian organizational awareness and capacity  

PubMed Central

Background ParticipACTION is a Canadian physical activity (PA) communications and social marketing organization that was relaunched in 2007 after a six-year hiatus. This study assesses the baseline awareness and capacity of Canadian organizations that promote physical activity, to adopt, implement and promote ParticipACTION's physical activity campaign. The three objectives were: (1) to determine organizational awareness of both the 'original' and 'new' ParticipACTION; (2) to report baseline levels of three organizational capacity domains (i.e., to adopt, implement and externally promote physical activity initiatives); and, (3) to explore potential differences in those domains based on organizational size, sector and primary mandate. Methods Organizations at local, provincial/territorial, and national levels were sent an invitation via email prior to the official launch of ParticipACTION to complete an on-line survey. The survey assessed their organization's capacity to adopt, implement and externally promote a new physical activity campaign within their organizational mandates. Descriptive statistics were employed to address the first two study objectives. A series of one-way analysis of variance were conducted to examine the third objective. Results The response rate was 29.7% (268/902). The majority of responding organizations had over 40 employees and had operated for over 10 years. Education was the most common primary mandate, followed by sport and recreation. Organizations were evenly distributed between government and not-for-profits. Approximately 96% of respondents had heard of the 'original' ParticipACTION while 54.6% had heard of the 'new' ParticipACTION (Objective 1). Findings indicate good organizational capacity in Canada to promote physical activity (Objective 2) based on reported means of approximately 4.0 (on 5-point scales) for capacity to adopt, implement, and externally promote new physical activity campaigns. Capacity to adopt new physical activity campaigns differed by organizational sector and mandate, and capacity to implement differed by organizational mandate (Objective 3). Conclusion At baseline, and without specific details of the campaign, respondents believe they have good capacity to work with ParticipACTION. ParticipACTION may do well to capitalize on the existing strong organizational capacity components of leadership, infrastructure and 'will' of national organizations to facilitate the success of its future campaigns.

2009-01-01

245

A survey instrument for qualitative and quantitative examination of hands-on-science instruction using videotape-jury review techniques  

Microsoft Academic Search

Few elementary science teachers feel comfortable with the idea of “hands-on-science” teaching, which is very different from\\u000a the way they were taught science in high school and college. The Elementary Science Education Institute (ESEI) was developed\\u000a to help Tennessee’s elementary teachers prepare to use hands-on teaching methods in their classrooms, and this study was designed\\u000a to examine the extent to

J. Preston Prather; Robert L. Hartshorn; Nancy J. Walters

1990-01-01

246

Using Formative Research to Design an Epidemiologic Survey: The North Carolina Study of Home Care and Hospice Nurses  

PubMed Central

OBJECTIVES Formative research can serve as a means of obtaining important information for designing an epidemiologic study, but descriptions of this approach in the epidemiologic literature are lacking. The objective of this paper is to describe the use of three formative research techniques in designing a survey of home care and hospice nurses. METHODS We conducted two focus groups, seven key informant interviews, and approximately fifteen hours of direct observation among home care and hospice nurses recruited by word of mouth in North Carolina in 2006. RESULTS We used information obtained from the formative research to decide which survey design would likely be most successful with this population (mail survey, as opposed to Internet survey or in-person interviews), which measure to use for the denominator of the blood exposure incidence rates (number of visits, as opposed to patient-time), and which items and response options to include in the questionnaire, as well as to identify specific survey techniques that would likely increase the response rate (emphasizing the regional focus of the study; sending the questionnaire to the home address). CONCLUSION When particular information for planning a study is unavailable from the literature or the investigator's experience, formative research can be an effective means of obtaining that information.

Lyden, Jennifer T.; Klein, Cynthia

2011-01-01

247

Final Design of the CARMENES M-Dwarf Radial-Velocity Survey Instrument  

NASA Astrophysics Data System (ADS)

CARMENES (Calar Alto high-Resolution search for M dwarfs with Exo-earths with Near-infrared and optical Echelle Spectrographs) is a next-generation instrument being built for the 3.5m telescope at the Calar Alto Observatory by a consortium of eleven Spanish and German institutions. CARMENES will conduct a five-year exoplanet survey targeting ~300 M dwarfs. The CARMENES instrument consists of two separate échelle spectrographs covering the wavelength range from 0.55 to 1.7 ?m at a spectral resolution of R = 82,000, fed by fibers from the Cassegrain focus of the telescope. For late-M spectral types, the wavelength range around 1.0 ?m (Y band) is the most important wavelength region for radial velocity work. Therefore, the efficiency of CARMENES will be optimized in this range. Since CCDs do not provide high enough efficiency around 1.0 ?m and no signal at all beyond the Si cutoff at 1.1 ?m, a near-IR detector is required. It is thus natural to adopt an instrument concept with two spectrographs, one equipped with a CCD for the range 0.55-1.05 ?m, and one with HgCdTe detectors for the range from 0.9-1.7 ?m. Each spectrograph will be coupled to the 3.5m telescope with its own optical fiber. The front end will contain a dichroic beam splitter and an atmospheric dispersion corrector, to feed the light into the fibers leading to the spectrographs. Guiding is performed with a separate camera. Additional fibers are available for simultaneous injection of light from emission line lamps for RV calibration. The spectrographs are mounted on benches inside vacuum tanks located in the coudé laboratory of the 3.5m dome. Each vacuum tank is equipped with a temperature stabilization system capable of keeping the temperature constant to within ±0.01K over 24h. The visible-light spectrograph will be operated near room temperature, the NIR spectrograph will be cooled to 140K. The CARMENES instrument passed its preliminary design review in July 2011; the final design is just being completed. Commissioning of the instrument is planned for the first half of 2014. At least 600 useable nights have been allocated at the Calar Alto 3.5m Telescope for the CARMENES survey in the time frame from 2014 to 2018.

Quirrenbach, Andreas; Amado, P.; Seifert, W.; Sánchez Carrasco, M. A.; Ribas, I.; Reiners, A.; Mandel, H.; Caballero, J. A.; Mundt, R.; Galadí, D.; Consortium, CARMENES

2013-01-01

248

Quantitative evaluation of skin condition in an epidemiological survey of females living in northern versus southern Japan.  

PubMed

Image analysis and biophysical methods were used to compare the skin condition of a group of females ranging in age from 5 to 65 years who had lived all of their lives in either Kagoshima (n=300), located in southern Japan, or Akita (n=302), located in northern Japan. Kagoshima annually receives approximately 1.5 times more solar UVB radiation than Akita. The methods used and corresponding skin parameters reported in this survey were: high resolution digital imaging followed by computer analysis of facial images for facial skin wrinkling and hyperpigmentation; silicone skin replicas followed by Moiré interferometry for facial skin surface roughness (texture); the Minolta Chromameter for skin color (L*a*b*) on sun-exposed (forehead) and sun-protected (upper inner arm) skin sites; the Corneometer for skin capacitance (hydration) on the cheek and ventral forearm; the Sebumeter for sebum excretion rate on the forehead; and the Minolta Spot Thermometer for skin temperature on the upper cheek. Compared with Japanese women living in Akita, Japanese women living in Kagoshima had significantly longer facial wrinkles, higher number of wrinkles, larger hyperpigmented spots, higher number of spots, rougher facial skin texture, more yellow foreheads and upper inner arms, darker foreheads, and less stratum corneum hydration in the cheeks and arms. When compared on an age-for-age basis, the average 40-year-old Kagoshima women has the same level of facial wrinkling as a 48-year-old Akita women, a delay of 8 years for living in the northern latitude. For facial hyperpigmentation, the delay is 16 years; the average 40-year-old Kagoshima women has the same level of facial hyperpigmentation as a 56-year-old Akita women. The results further testify to the skin damaging effects of sun exposure and may be useful in public health education to promote everyday sun protection. PMID:11514124

Hillebrand, G G; Miyamoto, K; Schnell, B; Ichihashi, M; Shinkura, R; Akiba, S

2001-08-01

249

Methodology and Accuracy of Estimation of Quantitative Trait Loci Parameters in a Half-Sib Design Using Maximum Likelihood  

PubMed Central

Maximum likelihood methods were developed for estimation of the six parameters relating to a marker-linked quantitative trait locus (QTL) segregating in a half-sib design, namely the QTL additive effect, the QTL dominance effect, the population mean, recombination between the marker and the QTL, the population frequency of the QTL alleles, and the within-family residual variance. The method was tested on simulated stochastic data with various family structures under two genetic models. A method for predicting the expected value of the likelihood was also derived and used to predict the lower bound sampling errors of the parameter estimates and the correlations between them. It was found that standard errors and confidence intervals were smallest for the population mean and variance, intermediate for QTL effects and allele frequency, and highest for recombination rate. Correlations among standard errors of the parameter estimates were generally low except for a strong negative correlation (r = -0.9) between the QTL's dominance effect and the population mean, and medium positive and negative correlations between the QTL's additive effect and, respectively, recombination rate (r = 0.5) and residual variance (r = -0.6). The implications for experimental design and method of analysis on power and accuracy of marker-QTL linkage experiments were discussed.

Mackinnon, M. J.; Weller, J. I.

1995-01-01

250

Measuring the Urologic Iceberg: Design and Implementation of The Boston Area Community Health (BACH) Survey  

PubMed Central

Objectives: To describe the Boston Area Community Health (BACH) survey, a National Institutes of Health[en]supported epidemiological study of symptoms suggestive of the following urologic conditions: urinary incontinence, benign prostatic hyperplasia, interstitial cystitis, chronic pelvic pain of bladder origin, prostatitis, hypogonadism, erectile dysfunction, and female sexual dysfunction. Methods: BACH used a two-stage stratified cluster design to recruit a community-based random sample of 5506, divided between males (2301) and females (3205), three racial/ethnic groups (black, Hispanic, and white), and four age groups (30[en]39, 40[en]49, 50[en]59, 60[en]79 yr). Validated questionnaires were used to collect information on urologic symptoms, comorbidities, prescribed and over-the-counter medications, reproductive history, quality of life, health care utilization, physical activity, depressive symptoms, interpersonal stress, smoking, alcohol use, fluid intake, nutrition, menopausal status, sexual activity, abuse, anthropometrics (measured height, weight, hip and waist circumference, pulse rate, blood pressure), and sociodemographics including country of origin, marital status, employment status, and income. Blood samples were collected from 68% of all subjects. Results: A large representative community-based sample was successfully recruited to provide both cross-sectional and eventually longitudinal data to address important urologic questions. Conclusions: BACH has features distinguishing it from most other epidemiological studies in urology. It uses a random community-based sample of people who are racially/ethnically diverse and includes a broad age range (30[en]79 yr). It includes both males and females The study focuses on symptoms rather than variably defined disease conditions, it is multidisciplinary, and it is designed to become longitudinal.

McKinlay, John B.; Link, Carol L.

2007-01-01

251

SIS mixer design for a broadband millimeter spectrometer suitable for rapid line surveys and redshift determinations  

NASA Astrophysics Data System (ADS)

We present some detail of the waveguide probe and SIS mixer chip designs for a low-noise 180-300 GHz double-sideband receiver with an instantaneous RF bandwidth of 24 GHz. The receiver's single SIS junction is excited by a broadband, fixed-tuned waveguide probe on a silicon substrate. The IF output is coupled to a 6-18 GHz MMIC low-noise preamplifier. Following further amplification, the output is processed by an array of 4 GHz, 128-channel analog autocorrelation spectrometers (WASP II). The single-sideband receiver noise temperature goal of 70 Kelvin will provide a prototype instrument capable of rapid line surveys and of relatively efficient carbon monoxide (CO) emission line searches of distant, dusty galaxies. The latter application's goal is to determine redshifts by measuring the frequencies of CO line emissions from the star-forming regions dominating the submillimeter brightness of these galaxies. Construction of the receiver has begun; lab testing should begin in the fall. Demonstration of the receiver on the Caltech Submillimeter Observatory (CSO) telescope should begin in spring 2003.

Rice, Frank; Sumner, Matthew; Zmuidzinas, Jonas; Hu, R.; LeDuc, Henry G.; Harris, Andrew I.; Miller, David

2003-02-01

252

Italian survey on cardiac rehabilitation and secondary prevention after cardiac revascularization: ICAROS study. A survey from the Italian cardiac rehabilitation network: rationale and design.  

PubMed

In this paper, the Italian Association for Cardiac Prevention and Rehabilitation (GICR) presents the rationale and design of the "Italian survey on CArdiac RehabilitatiOn and Secondary prevention after cardiac revascularization (ICAROS)". The survey is a prospective, longitudinal, multicentric survey, with a on-line web-based data collection. Its design corresponds to the survey's goal, i.e. to describe accurately in the Italian cardiological setting, through a representative number of cardiac rehabilitation centers belonging to the GICR national network, the characteristics, content and effects in the medium term of cardiac rehabilitation (CRP) inpatient or outpatient programs offered to patients after coronary artery bypass (CABG) or percutaneous revascularization (PTCA). The primary aims of the study are: a) to define the principal clinical characteristics of patients who have undergone PTCA or CABG and have been admitted to a CRP program; b) to identify the components of the CRP programs in terms of diagnostic procedures and assessment tests performed, treatments administered, educational programs and physical exercise interventions employed; c) to identify and analyze drug treatments prescribed at discharge from the acute facility and those prescribed at the end of the CRP program; d) to verify the clinical outcome during the course of the CRP program and at 6 months and 1 year after the end of the post-acute CRP program, as well as patients' adherence to the prescribed pharmacological therapy and to the recommended life styles, and the achievement and maintenance of the targets in relation to the modifiable risk factors; e) to define the consumption of major healthcare resources (major cardiac events, hospital re-admission, emergency care access, specialist visits) during the first year following a CRP program. The survey population will consist of all patients consecutively discharged in the period November 3-30, 2008 at the end of an inpatient, day-hospital or outpatient CRP programme after CABG (isolated or associated to valve or ascending aorta surgery) or PTCA (rescue, primary or elective). There are no age, sex or other patient selection criteria. Based on ISYDE 2008 data analysis, we plan to recruit approximately 1300-1400 patients, 75% of whom with post CABG diagnosis and 25% with post PTCA diagnosis. Preliminary results of the survey are expected in the late winter 2009. PMID:19040122

Griffo, Raffaele; Fattirolli, Francesco; Temporelli, Pier Luigi; Tramarin, Roberto

2008-09-01

253

COSTS AND BENEFITS OF FULL DUAL-FRAME TELEPHONE SURVEY DESIGNS  

Microsoft Academic Search

Nonetheless, the potential for non-coverage bias continues to increase as the cell-only population grows. Moreover, prior research has not fully investigated another growing segment of the public - those who have a landline but who rely mostly on a cell phone. In this study, we use four national dual frame telephone surveys to explore the separate contributions to survey estimates

Scott Keeter; Michael Dimock; Courtney Kennedy; John Horrigan

254

The Evolution of the Weekly Gasoline Price Survey through Changes in Design and Frame  

Microsoft Academic Search

The Energy Information Administration (EIA) weekly survey of gasoline prices produces estimates of gasoline pump prices at the national and regional levels, as well as estimates for several states and cities, two formulations and three grades of gasoline. This survey originated as a response to the First Gulf War and was later expanded to monitor the effects of the Clean

Paula Weir; Benita J. O'Colmain; Pedro J. Saavedra

255

Designing a Household Survey to Address Seasonality in Child Care Arrangements  

ERIC Educational Resources Information Center

|In household telephone surveys, a long field period may be required to maximize the response rate and achieve adequate sample sizes. However, long field periods can be problematic when measures of seasonally affected behavior are sought. Surveys of child care use are one example because child care arrangements vary by season. Options include…

Schmidt, Stefanie R.; Wang, Kevin H.; Sonenstein, Freya L.

2008-01-01

256

Designing a Household Survey to Address Seasonality in Child Care Arrangements  

ERIC Educational Resources Information Center

In household telephone surveys, a long field period may be required to maximize the response rate and achieve adequate sample sizes. However, long field periods can be problematic when measures of seasonally affected behavior are sought. Surveys of child care use are one example because child care arrangements vary by season. Options include…

Schmidt, Stefanie R.; Wang, Kevin H.; Sonenstein, Freya L.

2008-01-01

257

Designing a Household Survey to Address Seasonality in Child Care Arrangements  

Microsoft Academic Search

In household telephone surveys, a long field period may be required to maximize the response rate and achieve adequate sample sizes. However, long field periods can be problematic when measures of seasonally affected behavior are sought. Surveys of child care use are one example because child care arrangements vary by season. Options include varying the questions posed about school-year and

Stefanie R. Schmidt; Kevin H. Wang; Freya L. Sonenstein

2008-01-01

258

Robust controller design for load frequency control of non-minimum phase Hydro power plant using PSO enabled automated Quantitative Feedback Theory  

Microsoft Academic Search

This paper presents the design of a robust PID controller for load frequency control of non-minimum phase hydro power plant using particle swarm optimization (PSO) enabled automated quantitative feedback theory (QFT). The plant model considered here is a dynamic model of power system that includes the turbine, governor, load and machine dynamics subjected to control the load frequency in accordance

B. Satpati; I. Bandyopadhyay; G. Das; C. Koley

2008-01-01

259

Literature Survey, Numerical Examples, and Recommended Design Studies for Main-Coolant Pumps. Final Report.  

National Technical Information Service (NTIS)

This report presents an up-to-date literature survey, examples of calculations of seal forces or other pump properties, and recommendations for future work pertaining to primary coolant pumps and primary recirculating pumps in the nuclear power industry. ...

P. E. Allaire L. E. Barrett

1982-01-01

260

A National Baseline Prevalence Survey of Schistosomiasis in the Philippines Using Stratified Two-Step Systematic Cluster Sampling Design  

PubMed Central

For the first time in the country, a national baseline prevalence survey using a well-defined sampling design such as a stratified two-step systematic cluster sampling was conducted in 2005 to 2008. The purpose of the survey was to stratify the provinces according to prevalence of schistosomiasis such as high, moderate, and low prevalence which in turn would be used as basis for the intervention program to be implemented. The national survey was divided into four phases. Results of the first two phases conducted in Mindanao and the Visayas were published in 2008. Data from the last two phases showed three provinces with prevalence rates higher than endemic provinces surveyed in the first two phases thus changing the overall ranking of endemic provinces at the national level. Age and sex distribution of schistosomiasis remained the same in Luzon and Maguindanao. Soil-transmitted and food-borne helminthes were also recorded in these surveys. This paper deals with the results of the last 2 phases done in Luzon and Maguindanao and integrates all four phases in the discussion.

Leonardo, Lydia; Rivera, Pilarita; Saniel, Ofelia; Villacorte, Elena; Lebanan, May Antonnette; Crisostomo, Bobby; Hernandez, Leda; Baquilod, Mario; Erce, Edgardo; Martinez, Ruth; Velayudhan, Raman

2012-01-01

261

The Health Information National Trends Survey (HINTS): Development, Design, and Dissemination  

Microsoft Academic Search

Little is known about access, sources, and trust of cancer-related information, or factors that facilitate or hinder communication on a populationwide basis. Through a careful developmental process involving extensive input from many individuals and organizations, the National Cancer Institute(NCI)developed the Health Information National Trends Survey(HINTS)to help fill this gap. This nationally representative telephone survey of 6,369 persons aged???18 years among

David E. Nelson; Gary L. Kreps; Bradford W. Hesse; ROBERT T. CROYLE; Gordon Willis; Neeraj K. Arora; Barbara K. Rimer; K. Vish Viswanath; Neil Weinstein; Sara Alden

2004-01-01

262

The Family of t-Designs: Survey and Advances (Preliminary Report).  

National Technical Information Service (NTIS)

The family of t-designs are an important family of statistical designs. Their importance is due to their statistical optimalities, desirable symmetries for analyses and interpretations, and uses for constructing other important designs and structures such...

A. Hedayat

1974-01-01

263

A Geometric Approach to Trajectory Design for an Autonomous Underwater Vehicle: Surveying the Bulbous Bow of a Ship  

Microsoft Academic Search

In this paper, we present a control strategy design technique for an autonomous underwater vehicle based on solutions to the\\u000a motion planning problem derived from differential geometric methods. The motion planning problem is motivated by the practical\\u000a application of surveying the hull of a ship for implications of harbor and port security. In recent years, engineers and researchers\\u000a have been

Ryan N. Smith; Dario Cazzaro; Luca Invernizzi; Giacomo Marani; Song K. Choi; Monique Chyba

264

Nutrition and Health Survey of Taiwan Elementary School Children 2001-2002: research design, methods and scope.  

PubMed

The "Nutrition and Health Survey of Taiwan's Elementary School Children (2001-2002)" was to investigate the nutritional status, influential dietary and non-dietary factors, health and development, and school performance, as well as the inter-relationships among these factors. The survey adopted a two-staged stratified, clustered probability sampling scheme. Towns and districts in Taiwan with particular ethnic and geographical characteristics were designated into 13 strata including Hakka areas, mountain areas, eastern Taiwan, the Penghu Islands, 3 northern regions, 3 central regions and 3 southern regions. Eight schools were selected from each stratum using the probabilities proportional to sizes method. Twenty-four pupils were randomly selected within each school. The survey included face-to-face interviews and health examinations. Taking seasonal effects into consideration, the face-to-face interviews were evenly allocated into each of the two semesters. A total of 2,419 face-to-face interviews and 2,475 health examinations were completed. Interview data included household information, socio-demographics, 24-hour dietary recall, food frequency, dietary and nutritional knowledge, attitudes and behaviors, physical activity, medical history, oral health, pubertal development, and bone health. Health exam data included anthropometry, blood pressure, physical fitness, bone density, dental health, and blood and urine collection. SUDAAN was used to adjust sampling design effect. There were no significant differences in sibling rank and parental characteristics between respondents and non-respondents, which indicates that our survey is representative and unbiased. The results of this survey will increase our understanding on the nutrition and health status of schoolchildren and can be used to shape public health policy in Taiwan. PMID:17723991

Tu, Su-Hao; Hung, Yung-Tai; Chang, Hsing-Yi; Hang, Chi-Ming; Shaw, Ning-Sing; Lin, Wei; Lin, Yi-Chin; Hu, Su-Wan; Yang, Yao-Hsu; Wu, Tzee-Chung; Chang, Ya-Hui; Su, Shu-Chen; Hsu, Hsiao-Chi; Tsai, Keh-Sung; Chen, Ssu-Yuan; Yeh, Chih-Jung; Pan, Wen-Harn

2007-01-01

265

Evidence for disaster risk reduction, planning and response: design of the Evidence Aid survey  

PubMed Central

Systematic reviews are now regarded as a key component of the decision making process in health care, and, increasingly, in other areas. This should also be true in disaster risk reduction, planning and response. Since the Indian Ocean tsunami in 2004, The Cochrane Collaboration and others have been working together to strengthen the use and usefulness of systematic reviews in this field, through Evidence Aid. Evidence Aid is conducting a survey to identify the attitudes of those involved in the humanitarian response to natural disasters and other crises towards systematic reviews and research in such settings; their priorities for evidence, and their preferences for how the information should be made accessible. This article contains an outline of the survey instrument, which is available in full from www.EvidenceAid.org. The preliminary findings of the survey will be published in future articles.

Clarke, Mike; Kayabu, Bonnix

2011-01-01

266

Evidence for disaster risk reduction, planning and response: design of the Evidence Aid survey.  

PubMed

Systematic reviews are now regarded as a key component of the decision making process in health care, and, increasingly, in other areas. This should also be true in disaster risk reduction, planning and response. Since the Indian Ocean tsunami in 2004, The Cochrane Collaboration and others have been working together to strengthen the use and usefulness of systematic reviews in this field, through Evidence Aid. Evidence Aid is conducting a survey to identify the attitudes of those involved in the humanitarian response to natural disasters and other crises towards systematic reviews and research in such settings; their priorities for evidence, and their preferences for how the information should be made accessible. This article contains an outline of the survey instrument, which is available in full from www.EvidenceAid.org. The preliminary findings of the survey will be published in future articles. PMID:22031230

Clarke, Mike; Kayabu, Bonnix

2011-10-14

267

German health interview and examination survey for adults (DEGS) - design, objectives and implementation of the first data collection wave  

PubMed Central

Background The German Health Interview and Examination Survey for Adults (DEGS) is part of the recently established national health monitoring conducted by the Robert Koch Institute. DEGS combines a nationally representative periodic health survey and a longitudinal study based on follow-up of survey participants. Funding is provided by the German Ministry of Health and supplemented for specific research topics from other sources. Methods/design The first DEGS wave of data collection (DEGS1) extended from November 2008 to December 2011. Overall, 8152 men and women participated. Of these, 3959 persons already participated in the German National Health Interview and Examination Survey 1998 (GNHIES98) at which time they were 18–79?years of age. Another 4193 persons 18–79?years of age were recruited for DEGS1 in 2008–2011 based on two-stage stratified random sampling from local population registries. Health data and context variables were collected using standardized computer assisted personal interviews, self-administered questionnaires, and standardized measurements and tests. In order to keep survey results representative for the population aged 18–79?years, results will be weighted by survey-specific weighting factors considering sampling and drop-out probabilities as well as deviations between the design-weighted net sample and German population statistics 2010. Discussion DEGS aims to establish a nationally representative data base on health of adults in Germany. This health data platform will be used for continuous health reporting and health care research. The results will help to support health policy planning and evaluation. Repeated cross-sectional surveys will permit analyses of time trends in morbidity, functional capacity levels, disability, and health risks and resources. Follow-up of study participants will provide the opportunity to study trajectories of health and disability. A special focus lies on chronic diseases including asthma, allergies, cardiovascular conditions, diabetes mellitus, and musculoskeletal diseases. Other core topics include vaccine-preventable diseases and immunization status, nutritional deficiencies, health in older age, and the association between health-related behavior and mental health.

2012-01-01

268

Practicing the Politics of Inclusion: Citizen Surveys and the Design of Solid Waste Recycling Programs  

Microsoft Academic Search

This study presents a framework for applying and interpreting citizen surveys to formulate community recycling programs. Viewed as a coproduced service, a recycling program's success depends on strong and sustained public support and participation. We find that knowing citizen opinions and attitudes toward recycling can help public managers maximize citizen participation in recycling. This analysis supports the value of conducting

Hunter Bacot; Amy S. McCabe; Michael R. Fitzgerald; Terry Bowen; David H. Folz

1993-01-01

269

Energy aware dwelling: a critical survey of interaction design for eco-visualizations  

Microsoft Academic Search

Eco-visualizations (EVs) are any kind of interactive device targeted at revealing energy use in order to promote sustainable behaviours or foster positive attitudes towards sustainable practices. There are some interesting, informative, highly creative, and delightful EVs now available. This paper provides a critical survey of several noteworthy EVs and classifies them in terms of scale and contexts of use. The

James Pierce; William Odom; Eli Blevis

2008-01-01

270

Survey of head, helmet and headform sizes related to motorcycle helmet design  

Microsoft Academic Search

A test rig was built to measure rapidly and store on computer files the size and shape of human heads. The dimensions measured are specifically related to the areas protected by motor-cyclists' safety helmets. A survey of over 500 motor-cyclists and young adults was carried out, from which a statistical analysis of single size parameters, and of the correlation between

A. GILCHRIST; N. J. MILLS; T. KHAN

1988-01-01

271

The TRacking Adolescents' Individual Lives Survey (TRAILS): Design, Current Status, and Selected Findings  

ERIC Educational Resources Information Center

Objectives: The objectives of this study were as follows: to present a concise overview of the sample, outcomes, determinants, non-response and attrition of the ongoing TRacking Adolescents' Individual Lives Survey (TRAILS), which started in 2001; to summarize a selection of recent findings on continuity, discontinuity, risk, and protective…

Ormel, Johan; Oldehinkel, Albertine J.; Sijtsema, Jelle; van Oort, Floor; Raven, Dennis; Veenstra, Rene; Vollebergh, Wilma A. M.; Verhulst, Frank C.

2012-01-01

272

The TRacking Adolescents' Individual Lives Survey (TRAILS): Design, Current Status, and Selected Findings  

ERIC Educational Resources Information Center

|Objectives: The objectives of this study were as follows: to present a concise overview of the sample, outcomes, determinants, non-response and attrition of the ongoing TRacking Adolescents' Individual Lives Survey (TRAILS), which started in 2001; to summarize a selection of recent findings on continuity, discontinuity, risk, and protective…

Ormel, Johan; Oldehinkel, Albertine J.; Sijtsema, Jelle; van Oort, Floor; Raven, Dennis; Veenstra, Rene; Vollebergh, Wilma A. M.; Verhulst, Frank C.

2012-01-01

273

Simple Random Sampling Equivalent Survey Design for the Elimination of Undesirable Samples  

Microsoft Academic Search

In this article, we have shown that for any finite population of size N and any sample of size n, we can have a survey plan of size n that assigns a zero selection probability to those samples which contain all the undesirable units. Further, applying certain conditions, it has been shown that the proposed plan is equivalent to simple

Ila Pant Bisht; Raj Kishor Bisht

2011-01-01

274

A design of strategic alliance based on value chain of surveying and mapping enterprises in China  

NASA Astrophysics Data System (ADS)

In this paper, we use value chain and strategic alliance theories to analyzing the surveying and mapping Industry and enterprises. The value chain of surveying and mapping enterprises is highly-contacted but split by administrative interference, the enterprises are common small scale. According to the above things, we consider that establishing a nonequity- Holding strategic alliance based on value chain is an available way, it can not only let the enterprises share the superior resources in different sectors of the whole value chain each other but avoid offending the interests of related administrative departments, by this way, the surveying and mapping enterprises gain development respectively and totally. Then, we give the method to building up the strategic alliance model through parting the value chain and the using advantage of companies in different value chain sectors. Finally, we analyze the internal rule of strategic alliance and prove it is a suitable way to realize the development of surveying and mapping enterprises through game theory.

Duan, Hong; Huang, Xianfeng

2007-08-01

275

Challenges in the Design of the National Health and Nutrition Examination Survey  

Microsoft Academic Search

The National Health and Nutrition Examination Surveys (NHANES) is one of a series of health-related programs sponsored by the United States National Center for Health Statistics. A unique feature of NHANES is the administration of a complete medical examination for each respondent in the sample. To standardize administration, these examinations are carried out in mobile examination centers (MECs). The examination

Leyla Mohadjer; Lester R. Curtin

276

The Results of the National Heritage Language Survey: Implications for Teaching, Curriculum Design, and Professional Development  

ERIC Educational Resources Information Center

This article reports on a survey of heritage language learners (HLLs) across different heritage languages (HLs) and geographic regions in the United States. A general profile of HLLs emerges as a student who (1) acquired English in early childhood, after acquiring the HL; (2) has limited exposure to the HL outside the home; (3) has relatively…

Carreira, Maria; Kagan, Olga

2011-01-01

277

Site study plan for EDBH (Engineering Design Boreholes) seismic surveys, Deaf Smith County site, Texas: Revision 1  

SciTech Connect

This site study plan describes seismic reflection surveys to run north-south and east-west across the Deaf Smith County site, and intersecting near the Engineering Design Boreholes (EDBH). Both conventional and shallow high-resolution surveys will be run. The field program has been designed to acquire subsurface geologic and stratigraphic data to address information/data needs resulting from Federal and State regulations and Repository program requirements. The data acquired by the conventional surveys will be common-depth- point, seismic reflection data optimized for reflection events that indicate geologic structure near the repository horizon. The data will also resolve the basement structure and shallow reflection events up to about the top of the evaporite sequence. Field acquisition includes a testing phase to check/select parameters and a production phase. The field data will be subjected immediately to conventional data processing and interpretation to determine if there are any anamolous structural for stratigraphic conditions that could affect the choice of the EDBH sites. After the EDBH's have been drilled and logged, including vertical seismic profiling, the data will be reprocessed and reinterpreted for detailed structural and stratigraphic information to guide shaft development. The shallow high-resulition seismic reflection lines will be run along the same alignments, but the lines will be shorter and limited to immediate vicinity of the EDBH sites. These lines are planned to detect faults or thick channel sands that may be present at the EDBH sites. 23 refs. , 7 figs., 5 tabs.

Hume, H.

1987-12-01

278

The APACHE survey hardware and software design: Tools for an automatic search of small-size transiting exoplanets  

NASA Astrophysics Data System (ADS)

Small-size ground-based telescopes can effectively be used to look for transiting rocky planets around nearby low-mass M stars using the photometric transit method, as recently demonstrated for example by the MEarth project. Since 2008 at the Astronomical Observatory of the Autonomous Region of Aosta Valley (OAVdA), we have been preparing for the long-term photometric survey APACHE, aimed at finding transiting small-size planets around thousands of nearby early and mid-M dwarfs. APACHE (A PAthway toward the Characterization of Habitable Earths) is designed to use an array of five dedicated and identical 40-cm Ritchey-Chretien telescopes and its observations started at the beginning of summer 2012. The main characteristics of the survey final set up and the preliminary results from the first weeks of observations will be discussed.

Christille, Jean-Marc; Bernagozzi, A.; Bertolini, E.; Calcidese, P.; Carbognani, A.; Cenadelli, D.; Damasso, M.; Giacobbe, P.; Lanteri, L.; Lattanzi, M. G.; Sozzetti, A.; Smart, R.

2013-04-01

279

Genetic Expectations of Quantitative Trait Loci Main and Interaction Effects Obtained With the Triple Testcross Design and Their Relevance for the Analysis of Heterosis  

PubMed Central

Interpretation of experimental results from quantitative trait loci (QTL) mapping studies on the predominant type of gene action can be severely affected by the choice of statistical model, experimental design, and provision of epistasis. In this study, we derive quantitative genetic expectations of (i) QTL effects obtained from one-dimensional genome scans with the triple testcross (TTC) design and (ii) pairwise interactions between marker loci using two-way analyses of variance (ANOVA) under the F2- and the F?-metric model. The theoretical results show that genetic expectations of QTL effects estimated with the TTC design are complex, comprising both main and epistatic effects, and that genetic expectations of two-way marker interactions are not straightforward extensions of effects estimated in one-dimensional scans. We also demonstrate that the TTC design can partially overcome the limitations of the design III in separating QTL main effects and their epistatic interactions in the analysis of heterosis and that dominance × additive epistatic interactions of individual QTL with the genetic background can be estimated with a one-dimensional genome scan. Furthermore, we present genetic expectations of variance components for the analysis of TTC progeny tested in a split-plot design, assuming digenic epistasis and arbitrary linkage.

Melchinger, A. E.; Utz, H. F.; Schon, C. C.

2008-01-01

280

Spatial scales of variation in lichens: implications for sampling design in biomonitoring surveys.  

PubMed

The variability of biological data is a main constraint affecting the quality and reliability of lichen biomonitoring surveys for estimation of the effects of atmospheric pollution. Although most epiphytic lichen bioindication surveys focus on between-site differences at the landscape level, associated with the large scale effects of atmospheric pollution, current protocols are based on multilevel sampling, thus adding further sources of variation and affecting the error budget. We test the hypothesis that assemblages of lichen communities vary at each spatial scale examined, in order to determine what scales should be included in future monitoring studies. We compared four sites in Italy, along gradients of atmospheric pollution and climate, to test the partitioning of the variance components of lichen diversity across spatial scales (from trunks to landscapes). Despite environmental heterogeneity, we observed comparable spatial variance. However, residuals often overcame between-plot variability, leading to biased estimation of atmospheric pollution effects. PMID:22628101

Giordani, Paolo; Brunialti, Giorgio; Frati, Luisa; Incerti, Guido; Ianesch, Luca; Vallone, Emanuele; Bacaro, Giovanni; Maccherini, Simona

2012-05-25

281

A multifactor experiment on the generalizability of direct mail advertising response techniques to mail survey design  

Microsoft Academic Search

This field experiment support for the idea that response-enhancing techniques developed in the direct mail advertising field\\u000a may be generalized to mail surveys of commercial populations. Significant response-speed techniques. It was also discovered\\u000a that none of the three techniques tested significantly affected response-quality. The results of this study suggest that response-rate\\u000a and-speed are stimulated by different factors which must be

Milton M. Pressley

1980-01-01

282

A Concept Design for an Ultra-Long-Range Survey Class AUV  

Microsoft Academic Search

Gliders and flight-style autonomous underwater vehicles (AUVs) are used to perform perform autonomous surveys of large areas of open ocean. Glider missions are characterized by their profiling flight pattern, slow speed, long range (1000s of km) and many month mission duration. Flight-style AUV missions are faster, of shorter range (100s of km) and multi day duration. An AUV combining many

Maaten E. Furlong; Stephen D. McPhail; Peter Stevenson

2007-01-01

283

Co-design of Control Systems and their real-time implementation - A Tool Survey  

Microsoft Academic Search

Summary Increasing needs for optimized designs and for handling the dependencies among control systems and their real-time implementation, cause a resulting need for tools that have the abilities to support design across these traditional discipline boundaries. Tools supporting such co-design provide new opportunities in developing cost-efficient, dependable and robust solutions where the interactions between control and implementation engineers can be

Martin Törngren; Dan Henriksson; Ola Redell; Jad El-Khoury; Daniel Simon; Hanzalek Zdenek; Karl-Erik Årzén

2006-01-01

284

Using SEM to Analyze Complex Survey Data: A Comparison between Design-Based Single-Level and Model-Based Multilevel Approaches  

ERIC Educational Resources Information Center

|Both ad-hoc robust sandwich standard error estimators (design-based approach) and multilevel analysis (model-based approach) are commonly used for analyzing complex survey data with nonindependent observations. Although these 2 approaches perform equally well on analyzing complex survey data with equal between- and within-level model structures…

Wu, Jiun-Yu; Kwok, Oi-man

2012-01-01

285

Household Market for Electric Vehicles. Testing the Hybrid Household Hypothesis: A Reflexively Designed Survey of New-Car-Buying, Multi-Vehicle California Households.  

National Technical Information Service (NTIS)

This survey was sponsored by the Air Resources Board in order to assist the Board in its evaluation of the zero-emission vehicle (ZEV) regulation. The survey was designed to test the consumer marketability of electric vehicles (EVs). A total of 454 househ...

T. Turrentine K. Kurani

1995-01-01

286

The challenge of comprehensively mapping children's health in a nation-wide health survey: Design of the German KiGGS-Study  

Microsoft Academic Search

BACKGROUND: From May 2003 to May 2006, the Robert Koch Institute conducted the German Health Interview and Examination Survey for Children and Adolescents (KiGGS). Aim of this first nationwide interview and examination survey was to collect comprehensive data on the health status of children and adolescents aged 0 to 17 years. METHODS\\/DESIGN: Participants were enrolled in two steps: first, 167

Bärbel-Maria Kurth; Panagiotis Kamtsiuris; Heike Hölling; Martin Schlaud; Rüdiger Dölle; Ute Ellert; Heidrun Kahl; Hiltraud Knopf; Michael Lange; Gert BM Mensink; Hannelore Neuhauser; Angelika Schaffrath Rosario; Christa Scheidt-Nave; Liane Schenk; Robert Schlack; Heribert Stolzenberg; Michael Thamm; Wulf Thierfelder; Ute Wolf

2008-01-01

287

Certain problems in developing a theory and design methods for anisotropic shells and plates with finite stiffness in shear. A survey  

Microsoft Academic Search

A survey is presented here of research on theory and design methods for shells and plates made of anisotropic materials, such as laminate reinforced plastics [4–13], compliant in shear. The report is based mainly on studies made at the Western Science Center, Academy of Sciences of the Ukrainian SSR during the last five years (after the previous survey [8] has

B. L. Pelekh

1975-01-01

288

GRAND DESIGN AND FLOCCULENT SPIRALS IN THE SPITZER SURVEY OF STELLAR STRUCTURE IN GALAXIES (S{sup 4}G)  

SciTech Connect

Spiral arm properties of 46 galaxies in the Spitzer Survey of Stellar Structure in Galaxies (S{sup 4}G) were measured at 3.6 {mu}m, where extinction is small and the old stars dominate. The sample includes flocculent, multiple arm, and grand design types with a wide range of Hubble and bar types. We find that most optically flocculent galaxies are also flocculent in the mid-IR because of star formation uncorrelated with stellar density waves, whereas multiple arm and grand design galaxies have underlying stellar waves. Arm-interarm contrasts increase from flocculent to multiple arm to grand design galaxies and with later Hubble types. Structure can be traced further out in the disk than in previous surveys. Some spirals peak at mid-radius while others continuously rise or fall, depending on Hubble and bar type. We find evidence for regular and symmetric modulations of the arm strength in NGC 4321. Bars tend to be long, high amplitude, and flat-profiled in early-type spirals, with arm contrasts that decrease with radius beyond the end of the bar, and they tend to be short, low amplitude, and exponential-profiled in late Hubble types, with arm contrasts that are constant or increase with radius. Longer bars tend to have larger amplitudes and stronger arms.

Elmegreen, Debra Meloy; Yau, Andrew [Vassar College, Department of Physics and Astronomy, Poughkeepsie, NY 12604 (United States); Elmegreen, Bruce G. [IBM Research Division, T. J. Watson Research Center, Yorktown Heights, NY 10598 (United States); Athanassoula, E.; Bosma, Albert [Laboratoire d'Astrophysique de Marseille (LAM), UMR6110, Universite de Provence/CNRS, Technopole de Marseille Etoile, 38 rue Frederic Joliot Curie, 13388 Marseille Cedex 20 (France); Buta, Ronald J. [Department of Physics and Astronomy, University of Alabama, Box 870324, Tuscaloosa, AL 35487 (United States); Helou, George; Sheth, Kartik [Infrared Processing and Analysis Center, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Ho, Luis C.; Madore, Barry F.; Menendez-Delmestre, KarIn [The Observatories, Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Gadotti, Dimitri A. [Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Strasse 1, D-85748 Garching bei Munchen (Germany); Knapen, Johan H. [Instituto de Astrofisica de Canarias, E-38200 La Laguna (Spain); Laurikainen, Eija; Salo, Heikki [Department of Physical Sciences/Astronomy Division, University of Oulu, FIN 90014 (Finland); Masters, Karen L. [Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road, Portsmouth PO1 2EH (United Kingdom); Meidt, Sharon E. [Max-Planck-Institut fuer Astronomie, Konigstuhl 17, 69117 Heidelberg (Germany); Regan, Michael W. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Zaritsky, Dennis [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Aravena, Manuel [National Radio Astronomy Observatory/NAASC, 520 Edgemont Road, Charlottesville, VA 22903 (United States)

2011-08-10

289

Design and Evaluation of Digital Learning Material to Support Acquisition of Quantitative Problem-Solving Skills within Food Chemistry  

ERIC Educational Resources Information Center

|One of the modules in the course Food Chemistry at Wageningen University (Wageningen, The Netherlands) focuses on quantitative problem-solving skills related to chemical reactions. The intended learning outcomes of this module are firstly, to be able to translate practical food chemistry related problems into mathematical equations and to solve…

Diederen, Julia; Gruppen, Harry; Hartog, Rob; Voragen, Alphons G. J.

2005-01-01

290

Quantitative Feedback Theory (QFT) for the Engineer. A Paradigm for the Design of Control Systems for Uncertain Nonlinear Plants.  

National Technical Information Service (NTIS)

This report brings the Quantitative Feedback Theory (QFT) material up to the state-of-the-art level and aims to provide students and practicing engineers a document that presents QFT in a unified and logical manner and which addresses the real-world contr...

C. H. Houpis D. Trosen M. Pachter R. Sating S. Rasmussen

1995-01-01

291

A Survey on Analysis and Design of Model-Based Fuzzy Control Systems  

Microsoft Academic Search

Fuzzy logic control was originally introduced and developed as a model free control design approach. However, it unfortunately suffers from criticism of lacking of systematic stability analysis and controller design though it has a great success in industry applications. In the past ten years or so, prevailing research efforts on fuzzy logic control have been devoted to model-based fuzzy control

Gang Feng

2006-01-01

292

INTEGRATED SUPPLY CHAIN DESIGN MODELS: A SURVEY AND FUTURE RESEARCH DIRECTIONS  

Microsoft Academic Search

Optimization models, especially nonlinear optimization models, have been widely used to solve integrated supply chain design problems. In integrated supply chain design, the decision maker needs to take into consider- ation inventory costs and distribution costs when the number and locations of the facilities are determined. The objective is to minimize the total cost that includes location costs and inventory

ZUO-JUN MAX SHEN

2007-01-01

293

Flow Field Survey Near the Rotational Plane of an Advanced Design Propeller on a Jetstar Airplane.  

National Technical Information Service (NTIS)

An investigation was conducted to obtain upper fuselage surface static pressures and boundary layer velocity profiles below the centerline of an advanced design propeller. This investigation documents the upper fuselage velocity flow field in support of t...

K. R. Walsh

1985-01-01

294

Is the linear modeling technique good enough for optimal form design? A comparison of quantitative analysis models.  

PubMed

How to design highly reputable and hot-selling products is an essential issue in product design. Whether consumers choose a product depends largely on their perception of the product image. A consumer-oriented design approach presented in this paper helps product designers incorporate consumers' perceptions of product forms in the design process. The consumer-oriented design approach uses quantification theory type I, grey prediction (the linear modeling technique), and neural networks (the nonlinear modeling technique) to determine the optimal form combination of product design for matching a given product image. An experimental study based on the concept of Kansei Engineering is conducted to collect numerical data for examining the relationship between consumers' perception of product image and product form elements of personal digital assistants (PDAs). The result of performance comparison shows that the QTTI model is good enough to help product designers determine the optimal form combination of product design. Although the PDA form design is used as a case study, the approach is applicable to other consumer products with various design elements and product images. The approach provides an effective mechanism for facilitating the consumer-oriented product design process. PMID:23258961

Lin, Yang-Cheng; Yeh, Chung-Hsing; Wang, Chen-Cheng; Wei, Chun-Chun

2012-11-11

295

Optical tweezers based force measurement system for quantitating binding interactions: system design and application for the study of bacterial adhesion  

Microsoft Academic Search

An optical force measurement system for quantitating forces in the pN range between micrometer-sized objects has been developed. The system was based upon optical tweezers in combination with a sensitive position detection system and constructed around an inverted microscope. A trapped particle in the focus of the high numerical aperture microscope-objective behaves like an omnidirectional mechanical spring in response to

Erik Fällman; Staffan Schedin; Jana Jass; Magnus Andersson; Bernt Eric Uhlin; Ove Axner

2004-01-01

296

Power of Daughter and Granddaughter Designs for Determining Linkage Between Marker Loci and Quantitative Trait Loci in Dairy Cattle  

Microsoft Academic Search

ABSTRACT There is considerable interest in bo- vine DNA-level polymorphic marker loci as a means of mapping quantitative trait loci (QTL) of economic,importance in cattle. Progeny of a sire heterozygous for both a marker locus and a linked QTL, which,inherit different alleles for the marker, will have different trait means. Based on this, power to detect QTL, as , grandsire

J. I. Weller; Y. Kashi; M. Soller

1990-01-01

297

Design and performance testing of quantitative real time PCR assays for influenza A and B viral load measurement  

Microsoft Academic Search

Background: The antiviral effect of anti-influenza drugs such as zanamivir may be demonstrated in patients as an increased rate of decline in viral load over a time course of treatment as compared with placebo. Historically this was measured using plaque assays, or Culture Enhanced Enzyme Linked Immunosorbent Assay (CE-ELISA). Objectives: to develop and characterise real time quantitative PCR (qPCR) assays

C. L. Ward; M. H. Dempseyb; C. J. A Ring; R. E Kempson; L Zhang; D Gor; B. W Snowden; M Tisdale

2004-01-01

298

ProbeLibrary: A new method for faster design and execution of quantitative real-time PCR  

Microsoft Academic Search

ProbeLibrary, a fast, specific and flexible format for quantitative real-time PCR, is described. The ProbeLibrary concept is based on the fact that just 90 short probes provide transcriptome-wide coverage in most organisms. These short probes are highly specific and possess the high melting temperature (Tm) required for real-time PCR owing to the incorporation of locked nucleic acid (LNA). The probes

Mikkel Noerholm; Peter S Nielsen; Nana Jacobsen; Christian Lomholt; Henrik M Pfundheller; Niels Tolstrup; Peter Mouritzen

2005-01-01

299

Design and methods in a survey of living conditions in the Arctic - the SLiCA study  

PubMed Central

Objectives The main objective of this study is to describe the methods and design of the survey of living conditions in the Arctic (SLiCA), relevant participation rates and the distribution of participants, as applicable to the survey data in Alaska, Greenland and Norway. This article briefly addresses possible selection bias in the data and also the ways to tackle it in future studies. Study design Population-based cross-sectional survey. Methods Indigenous individuals aged 16 years and older, living in Greenland, Alaska and in traditional settlement areas in Norway, were invited to participate. Random sampling methods were applied in Alaska and Greenland, while non-probability sampling methods were applied in Norway. Data were collected in 3 periods: in Alaska, from January 2002 to February 2003; in Greenland, from December 2003 to August 2006; and in Norway, in 2003 and from June 2006 to June 2008. The principal method in SLiCA was standardised face-to-face interviews using a questionnaire. Results A total of 663, 1,197 and 445 individuals were interviewed in Alaska, Greenland and Norway, respectively. Very high overall participation rates of 83% were obtained in Greenland and Alaska, while a more conventional rate of 57% was achieved in Norway. A predominance of female respondents was obtained in Alaska. Overall, the Sami cohort is older than the cohorts from Greenland and Alaska. Conclusions Preliminary assessments suggest that selection bias in the Sami sample is plausible but not a major threat. Few or no threats to validity are detected in the data from Alaska and Greenland. Despite different sampling and recruitment methods, and sociocultural differences, a unique database has been generated, which shall be used to explore relationships between health and other living conditions variables.

Eliassen, Bent-Martin; Melhus, Marita; Kruse, Jack; Poppel, Birger; Broderstad, Ann Ragnhild

2012-01-01

300

Preliminary Survey Report: Pre-Intervention Quantitative Risk Factor Analysis for Ship Repair Processes at Todd Pacific Shipyards Corporation, Seattle, Washington.  

National Technical Information Service (NTIS)

A pre-intervention quantitative risk factor analysis was performed at various shops and locations within Todd Pacific Shipyards Corporation facility in Seattle, Washington. This analysis was performed to identify and quantify risk factors that workers may...

S. D. Hudock S. J. Wurzelbacher

2001-01-01

301

Simultaneous design of an optical system and null tests of the components: examples and results from the Large-aperture Synoptic Survey Telescope  

NASA Astrophysics Data System (ADS)

Optical null tests for three lenses and two subsystems were incorporated into the optical design procedure for the Large-aperture Synoptic Survey Telescope [1]. The "skip surfaces" feature in the OSLO optical design program was crucial. The resulting optical tests were extremely simple, requiring only a retro reflecting spherical or flat mirror. This is only possible because the optical tests were simultaneously designed and optimized as the telescope was designed.

Seppala, Lynn G.

2010-07-01

302

A Study of Disruptive Behavior Disorders in Puerto Rican Youth: I. Background, Design, and Survey Methods  

ERIC Educational Resources Information Center

Objective: This is the first of two related articles on a study carried out between 2000 and 2003 designed to assess the prevalence, associated comorbidities, and correlates of disruptive behavior disorders in two populations of Puerto Rican children: one in the Standard Metropolitan Areas of San Juan and Caguas in Puerto Rico, and the other in…

Bird, Hector R.; Canino, Glorisa J.; Davies, Mark; Duarte, Cristiane S.; Febo, Vivian; Ramirez, Rafael; Hoven, Christina; Wicks, Judith; Musa, George; Loeber, Rolf

2006-01-01

303

A survey of design techniques for system-level dynamic power management  

Microsoft Academic Search

Dynamic power management (DPM) is a design methodology for dynamically reconfiguring systems to provide the requested services and performance levels with a minimum number of active components or a minimum load on such com- ponents. DPM encompasses a set of techniques that achieves energy-efficient computation by selectively turning off (or re- ducing the performance of) system components when they are

Luca Benini; Alessandro Bogliolo; Giovanni De Micheli

2000-01-01

304

Health Benefit Plan Design: Survey and Recommendations. Ohio Health Service Area 3.  

National Technical Information Service (NTIS)

This report on Health Benefit Plan Design was prepared by the Health Systems Association for the Allen County Steering Committee for Affordable Health Care. The report consists of two sections: (1) a profile of local health benefit plans and (2) recommend...

1985-01-01

305

DESIGN AND INDICATOR CONSIDERATIONS FOR A PROBABILISTIC SURVEY OF USA GREAT RIVERS: MISSOURI, MISSISSIPPI, OHIO  

EPA Science Inventory

Great River Ecosystems (GRE) include the river channel and associated backwaters and floodplain habitats. The challenge in designing a GRE monitoring and assessment program is to choose a set of habitats, indicators, and sampling locations that reveal the ecological condition of ...

306

A survey of systems approaches to green design with illustrations from the computer industry  

Microsoft Academic Search

Increased recognition of the importance of sustainable development is posing new challenges for industry. A systems approach provides a framework for reconciling the needs of sustainable development with all of the other demands on industry. The computer industry has been chosen to illustrate the application of a systems approach to green design in industry on account of both its increasing

Marion A. Hersh

1998-01-01

307

A Study of Disruptive Behavior Disorders in Puerto Rican Youth: I. Background, Design, and Survey Methods  

ERIC Educational Resources Information Center

|Objective: This is the first of two related articles on a study carried out between 2000 and 2003 designed to assess the prevalence, associated comorbidities, and correlates of disruptive behavior disorders in two populations of Puerto Rican children: one in the Standard Metropolitan Areas of San Juan and Caguas in Puerto Rico, and the other in…

Bird, Hector R.; Canino, Glorisa J.; Davies, Mark; Duarte, Cristiane S.; Febo, Vivian; Ramirez, Rafael; Hoven, Christina; Wicks, Judith; Musa, George; Loeber, Rolf

2006-01-01

308

Context-based design of mobile applications for museums: a survey of existing practices  

Microsoft Academic Search

This paper includes a review of mobile applications used in museum environments, focusing on the notion of context and its constituent dimensions. Museums are a representative example in which the context influences interaction. During a museum visit, the visitors interact with the exhibits through mobile devices. We argue that, effective interaction design needs to take into consideration multiple dimensions of

Dimitrios Raptis; Nikolaos K. Tselios; Nikolaos M. Avouris

2005-01-01

309

Aboriginal Self-Government through Constitutional Design: A Survey of Fourteen Aboriginal Constitutions in Canada  

Microsoft Academic Search

Despite a rich and diverse literature on the revitalization of Indigenous legal traditions and constitutional orders, no one has yet looked at modern Aboriginal constitutions in Canada. This essay draws upon the comparative constitutional design and Aboriginal politics literatures to describe and analyze the texts of 14 Aboriginal constitutions. The findings suggest that these constitutional documents are similar to non-Aboriginal

Christopher Alcantara; Greg Whitfield

2010-01-01

310

Aboriginal Self-Government through Constitutional Design: A Survey of Fourteen Aboriginal Constitutions in Canada  

Microsoft Academic Search

: Despite a rich and diverse literature on the revitalization of Indigenous legal traditions and constitutional orders, no one has yet looked at modern Aboriginal constitutions in Canada. This essay draws upon the comparative constitutional design and Aboriginal politics literatures to describe and analyze the texts of 14 Aboriginal constitutions. The findings suggest that these constitutional documents are similar to

Christopher Alcantara; Greg Whitfield

2010-01-01

311

A combined pulmonary -radiology workshop for visual evaluation of COPD: study design, chest CT findings and concordance with quantitative evaluation  

PubMed Central

The purposes of this study were: to describe chest CT findings in normal non-smoking controls and cigarette smokers with and without COPD; to compare the prevalence of CT abnormalities with severity of COPD; and to evaluate concordance between visual and quantitative chest CT (QCT) scoring Methods Volumetric inspiratory and expiratory CT scans of 294 subjects, including normal non-smokers, smokers without COPD, and smokers with GOLD Stage I-IV COPD, were scored at a multi-reader workshop using a standardized worksheet. There were fifty-eight observers (33 pulmonologists, 25 radiologists); each scan was scored by 9–11 observers. Interobserver agreement was calculated using kappa statistic. Median score of visual observations was compared with QCT measurements. Results Interobserver agreement was moderate for the presence or absence of emphysema and for the presence of panlobular emphysema; fair for the presence of centrilobular, paraseptal, and bullous emphysema subtypes and for the presence of bronchial wall thickening; and poor for gas trapping, centrilobular nodularity, mosaic attenuation, and bronchial dilation. Agreement was similar for radiologists and pulmonologists. The prevalence on CT readings of most abnormalities (e.g. emphysema, bronchial wall thickening, mosaic attenuation, expiratory gas trapping) increased significantly with greater COPD severity, while the prevalence of centrilobular nodularity decreased. Concordances between visual scoring and quantitative scoring of emphysema, gas trapping and airway wall thickening were 75%, 87% and 65%, respectively. Conclusions Despite substantial inter-observer variation, visual assessment of chest CT scans in cigarette smokers provides information regarding lung disease severity; visual scoring may be complementary to quantitative evaluation.

Lynch, David A; Murphy, James R; Crapo, James D; Criner, Gerard J; Galperin-Aizenberg, Maya; Jacobson, Francine L; Lipson, David A; Mamary, A James; Newell, John D; Sharafkhaneh, Amir; van Beek, Edwin JR

2013-01-01

312

Quantitative Composition and Distribution of the Macrobenthic Invertebrate Fauna of the Continental Shelf Ecosystems of the Northeastern United States.  

National Technical Information Service (NTIS)

From the mid-1950's to the mid-1960's a series of quantitative surveys of the macrobenthic invertebrate fauna were conducted in the offshore New England region (Maine to Long Island, New York). The surveys were designed to (1) obtain measures of macrobent...

R. B. Theroux R. L. Wigley

1998-01-01

313

Quantitative Compliant Control  

Microsoft Academic Search

An architecture-independent analysis approach is described for evaluation of control systems designed to provide compliant manipulator\\/task interaction. Two issues are highlighted: a safety bound that provides an explicit, quantitative design objective, and an examination of typical task dynamics and their impact on the difficulty (complexity) of control design. Two examples of control design within this framework are presented, demonstrating the

Dale A. Lawrence; Jim D. Chapel

1993-01-01

314

The Fly's Eye Camera System: An Instrument Design for Large Étendue Time Domain Surveys  

NASA Astrophysics Data System (ADS)

In this paper we briefly summarize the design concepts of the Fly's Eye Camera System, a proposed high resolution all-sky monitoring device which intends to perform high cadence time domain astronomy in multiple optical passbands while still accomplish a high étendue. Funding has already been accepted by the Hungarian Academy of Sciences in order to design and build a Fly's Eye device unit. Beyond the technical details and the actual scientific goals, this paper also discusses the possibilities and yields of a network operation involving ˜10 sites distributed geographically in a nearly homogeneous manner. Currently, we expect to finalize the mount assembly - that performs the sidereal tracking during the exposures - until the end of 2012 and to have a working prototype with a reduced number of individual cameras sometime in the spring or summer of 2013.

Csépány, G.; Pál, A.; Vida, K.; Regály, Z.; Mészáros, L.; Oláh, K.; Kiss, C.; Döbrentei, L.; Jaskó, A.; Mezõ, G.; Farkas, E.

2013-10-01

315

The Netherlands Mental Health Survey and Incidence Study (NEMESIS): objectives and design  

Microsoft Academic Search

The article describes the objectives and design of a prospective study of the prevalence, incidence and course of psychiatric\\u000a disorders in a representative sample of non-institutionalized Dutch adults. A total of 7146 men and women aged 18–64, contacted\\u000a through a multistage sample of municipalities and households, were interviewed at home in 1996. The primary diagnostic instrument\\u000a was the CIDI, which

R. V. Bijl; G. van Zessen; A. Ravelli; C. de Rijk; Y. Langendoen

1998-01-01

316

Nonmedical influences on medical decision making: an experimental technique using videotapes, factorial design, and survey sampling.  

PubMed Central

OBJECTIVE: To study nonmedical influences on the doctor-patient interaction. A technique using simulated patients and "real" doctors is described. DATA SOURCES: A random sample of physicians, stratified on such characteristics as demographics, specialty, or experience, and selected from commercial and professional listings. STUDY DESIGN: A medical appointment is depicted on videotape by professional actors. The patient's presenting complaint (e.g., chest pain) allows a range of valid interpretation. Several alternative versions are taped, featuring the same script with patient-actors of different age, sex, race, or other characteristics. Fractional factorial design is used to select a balanced subset of patient characteristics, reducing costs without biasing the outcome. DATA COLLECTION: Each physician is shown one version of the videotape appointment and is asked to describe how he or she would diagnose or treat such a patient. PRINCIPAL FINDINGS: Two studies using this technique have been completed to date, one involving chest pain and dyspnea and the other involving breast cancer. The factorial design provided sufficient power, despite limited sample size, to demonstrate with statistical significance various influences of the experimental and stratification variables, including the patient's gender and age and the physician's experience. Persistent recruitment produced a high response rate, minimizing selection bias and enhancing validity. CONCLUSION: These techniques permit us to determine, with a degree of control unattainable in observational studies, whether medical decisions as described by actual physicians and drawn from a demographic or professional group of interest, are influenced by a prescribed set of nonmedical factors.

Feldman, H A; McKinlay, J B; Potter, D A; Freund, K M; Burns, R B; Moskowitz, M A; Kasten, L E

1997-01-01

317

A Study of Program Management Procedures in the Campus-Based and Basic Grant Programs. Technical Report No. 1: Sample Design, Student Survey Yield and Bias.  

ERIC Educational Resources Information Center

|Part of a study of program management procedures in the campus-based and Basic Educational Opportunity Grant programs reports on the design of the site visit component of the study and the results of the student survey, both in terms of the yield obtained and the quality of the data. Chapter 2 describes the design of sampling methodology employed…

Puma, Michael J.; Ellis, Richard

318

The SuperMacho+SuperNova Survey Database Design: Supporting Time Domain Analysis of GB to TB Astronomical Datasets  

NASA Astrophysics Data System (ADS)

Two large scale survey projects to discover transient events have recently been initiated at NOAO's Cerro Tololo Inter-American Observatory (CTIO). The SuperMacho project (see Stubbs et al 2002 poster) seeks to detect and follow microlensing events toward the Large Magellanic Cloud and the ESSENCE SuperNova project (see Garnavich et al. 2002 poster) seeks to detect and follow intermediate to high-redshift supernovae. Together, these projects (SM+SN) present challenging data management needs both for the large size of the datasets and the kind of analysis to performed on the data. The data reduction pipeline is described elsewhere at this conference (see Miceli et al. 2002 poster). The database requirements of the SM+SN projects can be divided in three broad categories: support for the survey operations, storage and analysis of the data that comes from the image reduction and transient detection pipeline, and communication of the results for the project users and the astronomical community. Current relational database technologies are being applied to address these requirements. The open source database PostgreSQL has been selected for the implementation of the system. This work presents the design of the database, along with some performance considerations that are necessary for the fast retrieval of information, thus allowing the development of data mining applications to take full advantage of the database.

Hiriart, R.; Smith, R. C.; Becker, A.; Covarrubias, R.; Miknaitis, G.; Rest, A.; Stubbs, C.; Cook, K.; Nikolaev, S.; Prochter, G.

2002-12-01

319

The SuperMacho+SuperNova Survey Database Design: Supporting Time Domain Analysis of GB to TB Astronomical Datasets  

NASA Astrophysics Data System (ADS)

Two large scale survey projects to discover transient events have recently been initiated at NOAO's Cerro Tololo Inter-American Observatory (CTIO) in Chile. The SuperMacho project seeks to detect and follow microlensing events toward the Large Magellanic Cloud (LMC) and the ESSENCE Supernova project seeks to detect and follow intermediate to high-redshift supernovae. Together, these projects (SM+SN) present challenging data management needs both due to the large size of the datasets and the kind of analysis to be performed on the data. The database requirements of the SM+SN projects can be divided into three broad categories: support for the survey operation, storage and analysis of the data that comes from the image reduction and transient detection pipeline, and communication of the results to the project users and the astronomical community. Current relational database technologies are being applied to address these requirements. The open source database PostgreSQL has been selected for the implementation of the system. This work presents the design of the database, along with some performance considerations that are necessary for the fast retrieval of information, thus allowing the development of data mining applications to take full advantage of the database.

Hiriart, R.; Smith, C.; Becker, A.; Stubbs, C.; Rest, A.; Miknaitis, G.; Prochter, G.

320

Knee complaints and consequences on work status; a 10-year follow-up survey among floor layers and graphic designers  

PubMed Central

Background The purpose of the study was to examine if knee complaints among floor layers predict exclusion from the trade. Methods In 1994/95 self-reported data were obtained from a cohort of floor layers and graphic designers with and without knee straining work activities, respectively. At follow-up in 2005 the questionnaire survey was repeated. The study population consisted of 81 floor layers and 173 graphic designers who were presently working in their trades at baseline (1995). All participants were men aged 36–70 years in 2005. We computed the risk of losing gainful employment in the trade according to occurrence of knee complaints at baseline, using Cox proportional hazard regression adjusted for a number of potential confounding variables. Moreover, the crude and adjusted odds risk ratio for knee complaints according to status of employment in the trade were computed, using graphic designers as reference. Results A positive but non-significant association between knee complaints lasting more than 30 days the past 12 months and exclusion from the trade was found among floor layers (Hazard Ratio = 1.4, 95% CI = 0.6–3.5). The frequency of self-reported knee complaints was lower among floor layers presently at work in the trade in year 2005 (26.3%) compared with baseline in 1995 (41.1%), while the opposite tendency was seen among graphic designers (20.7% vs. 10.7%). Conclusion The study suggests that knee complaints are a risk factor for premature exclusion from a knee demanding trade. However, low power of the study precludes strong conclusions. The study also indicates a healthy worker effect among floor layers and a survivor effect among graphic designers.

Rytter, S?ren; Jensen, Lilli Kirkeskov; Bonde, Jens Peter

2007-01-01

321

Design and upgrades for the Sloan Digital Sky Survey telescope's roll-off enclosure  

NASA Astrophysics Data System (ADS)

The SDSS telescope is housed, when not in use, in a roll-off enclosure. This enclosure rolls away from the telescope a distance of 60 feet, leaving the telescope fully exposed for operations. Design considerations for wind and solar loading, thermal venting, conditioning and stability are reviewed. Originally, the enclosure had been constructed to minimize its surface area obstruction to the telescopes field of view. This design feature, however, offered little room to perform engineering tasks during non-operational time. An upgrade to the structure, in the form of raising the roof, was instituted. This improvement greatly enhanced the engineering and testing functions performed on the telescope, thereby increasing operational efficiency and the time allotted to engineering tasks. Problems maintaining and associated with weather sealing, lightning protection, truck wheel alignment, altitude effects on truck controllers and thermal conditioning are examined. Communication and electrical connections between stationary and moving elements of the enclosure are described. Two types of systems, to date, have been used one a reel and the other a slider system. Advantages and disadvantages of both are examined from the perspective of four years experience.

Leger, R. French; Long, Dan; Klaene, Mark A.

2003-02-01

322

SURVEY INSTRUMENT  

DOEpatents

This pulse-type survey instrument is suitable for readily detecting {alpha} particles in the presence of high {beta} and {gamma} backgrounds. The instruments may also be used to survey for neutrons, {beta} particles and {gamma} rays by employing suitably designed interchangeable probes and selecting an operating potential to correspond to the particular probe.

Borkowski, C.J.

1952-10-31

323

Nine issues for Internet-based survey research in service industries  

Microsoft Academic Search

Internet-based surveys have recently become a popular means of data collection among researchers in the service industries. However, there has been little discussion regarding the validation of Internet-based surveys in this services discipline. From the perspective of positivist and quantitative research, failure to organise a scientific and rigorous research design will damage the validity, reliability, and generalisability of a study's

Hui-Chih Wang; Her-Sen Doong

2010-01-01

324

Quality control systems for pipeline welding -a model and quantitative analysis; Part I: quality control system design and operation  

Microsoft Academic Search

This paper relies in part on experience gained in conjunction with the Office of the Federal Inspector's (OFI) monitoring of construction of the Eastern and Western Legs of the Alaska Natural Gas Transportation System (ANGTS). The OFI is an independent federal agency established to monitor ANGTS, a 4800 mile (7700 km), large-diameter, high-pressure gas pipeline designed to transport 2 to

Cook

1985-01-01

325

Design of a Center Push/Pull Terminal Device and Quantitative Evaluation Technique for an Upper Extremity Prosthetic Limb.  

National Technical Information Service (NTIS)

Based on prosthetic hand requirements, a new terminal device for upper extremity prostheses is designed and fabricated, namely the Center Push/Pull Terminal Device. The new hand offers the wearer enhanced positioning capabilities in the form of a three de...

R. B. Davis D. J. Schneck

1979-01-01

326

Vital and Health Statistics, Series 1, Number 40. Design and Operation of the National Survey of Early Childhhod Health, 2000.  

National Technical Information Service (NTIS)

This report presents the development, plan, and operation of the National Survey of Early Childhood Health, a module of the State and Local Area Integrated Telephone Survey, conducted by the National Center for Health Statistics, Centers for Disease Contr...

2002-01-01

327

Design and Operation of the National Survey of Children's Health, 2003. Series 1. Program and Collection Procedures.  

National Technical Information Service (NTIS)

This report presents the development, plan, and operation of the National Survey of Children's Health (NSCH), a module of the State and Local Area Integrated Telephone Survey, conducted by the National Center for Health Statistics, Centers for Disease Con...

S. J. Blumberg L. Olson M. R. Frankel L. Osborn K. P. Srinath P. Giambo

2005-01-01

328

Tailings Pond Characterization And Designing Through Geophysical Surveys In Dipping Sedimentary Formations  

NASA Astrophysics Data System (ADS)

Mining activities results into generation of disintegrated waste materials attaining increased mobilization status and requires a safe disposal mechanism through back filling process or secluded storage on surface with prevention of its interaction with environment cycle. The surface disposal of waste materials will become more critical in case of mined minerals having toxic or radioactive elements. In such cases, the surface disposal site is to be characterized for its sub-surface nature to understand its role in environmental impact due to the loading of waste materials. Near surface geophysics plays a major role in mapping the geophysical characters of the sub-surface formations in and around the disposal site and even to certain extent helps in designing of the storage structure. Integrated geophysical methods involving resistivity tomography, ground magnetic and shallow seismic studies were carried out over proposed tailings pond area of 0.3 sq. kms underlined by dipping sedimentary rocks consisting of ferruginous shales and dolomitic to siliceous limestone with varying thicknesses. The investigated site being located in tectonically disturbed area, geophysical investigations were carried out with number of profiles to visualize the sub-surface nature with clarity. The integration of results of twenty profiles of resistivity tomography with 2 m (shallow) and 10 m (moderate depth) electrode spacing’s enabled in preparing probable sub-surface geological section along the strike direction of the formation under the tailings pond with some geo-tectonic structure inferred to be a fault. Similarly, two resistivity tomography profiles perpendicular to the strike direction of the formations brought out the existence of buried basic intrusive body on the northern boundary of the proposed tailings pond. Two resistivity tomography profiles in criss-cross direction over the suspected fault zone confirmed fault existence on the north-eastern part of tailings pond. Thirty two magnetic profiles inside the tailings pond and surrounding areas on the southern part of the tailings pond enabled in identifying two parallel east-west intrusive bodies forming the impermeable boundary for the tailings pond. The shallow seismic refraction and the geophysical studies in and around the proposed tailings pond brought out the suitability of the site, even when the toxic elements percolates through the subsurface formations in to the groundwater system, the existence of dykes on either side of the proposed ponding area won’t allow the water to move across them thus by restricting the contamination within the tailings pond area. Similarly, the delineation of a fault zone within the tailings pond area helped in shifting the proposed dam axis of the pond to avoid leakage through the fault zone causing concern to environment pollution.

Muralidharan, D.; Andrade, R.; Anand, K.; Sathish, R.; Goud, K.

2009-12-01

329

Quantitative simultaneous 99mTc\\/123I SPECT: design study and validation with Monte Carlo simulations and physical acquisitions  

Microsoft Academic Search

Simultaneous dual isotope imaging (99mTc\\/123I) has potential clinical applications but has not been implemented in the clinic. The aim of this work was to design an artificial neural network (ANN) for crosstalk and scatter correction using a smaller number of energy windows (8) than we had previously proposed (26) to allow implementation on some clinical cameras, and to validate our

G. El Fakhri; P. Maksud; M. F. Kijewski; R. E. Zimmerman; S. C. Moore

2002-01-01

330

Absolute quantitation in simultaneous 99mTc\\/123I brain SPECT using ANN: design optimization and validation  

Microsoft Academic Search

Simultaneous dual isotope imaging (Tc-99m\\/I-123) has potential clinical applications but has not been implemented in the clinic. The aim of this work was to optimize the design of an artificial neural network (ANN) for cross-talk and scatter correction using a smaller number of energy windows (8) than we had previously proposed (26) to allow implementation on some clinical cameras, and

G. El Fakhri; P. Maksud; S. C. Moore; R. E. Zimmerman; M. F. Kijewski

2001-01-01

331

Quantitative histologic analysis of the mitral valve anterior leaflet: ischemic alterations and implications for valve replacement design  

NASA Astrophysics Data System (ADS)

There is a current trend to design innovative mitral valve replacements that mimic the native mitral valve (MV). A prerequisite for these new designs is the characterization of MV structure. This study was conducted to determine the distribution of MV collagen and glycosaminoglycan (GAGs) in MV anterior leaflets. Methods: Specimens from the mid-line of eight sheep MV anterior leaflets were stained with aniline blue (collagen) and alcian blue (GAGs). These specimens were analyzed using an image analysis system running Optimas software. Based on the luminance of stains within individual valve layers, the distribution of valvular collagen and GAGs from leaflet annulus to free-edge were determined. Results: Near the annulus, 100% of MV thickness is fibrosa (collagen dominated layer). Moving towards the free-edge, fibrosa prominence decreases and there is a transition to spongiosa (GAG dominated layer). Near the free-edge 100% of MV thickness is dominated by the spongiosa. Conclusions: Valvular collagen dominates MV structure near the annulus to support the stresses of bending and pressurization. Valvular GAGs dominate the MV near the free-edge to absorb the impact of leaflet coaptation. Image analysis has proven to be an effective tool to evaluate MV structure and facilitate the design of valve replacements.

Quick, David W.; Kunzelman, Karyn S.; Cochran, Richard P.

1999-06-01

332

Do We Need to Go Cellular? Assessing Political Media Consumption Using a Single-Frame Landline\\/Cellular Survey Design  

Microsoft Academic Search

Much research has been published on cellular phone only households and the challenges posed by cellular phones to traditional survey methodologies that attempt to generate representative samples using only landline telecommunications. This study reports analyses comparing two separate survey strata (Nlandline = 152, Ncellular = 153) collected simultaneously and nested within a single-frame survey of a state in the American Midwest for differences in

Megan R. Hill; John M. Tchernev; R. Lance Holbert

2012-01-01

333

Cost-effective control of a quarantine disease: a quantitative exploration using "design of experiments" methodology and bio-economic modeling.  

PubMed

ABSTRACT An integrated approach to control of quarantine diseases at the level of the plant production chain is complicated. The involved actors have different interests and the system is complex. Consequently, control policies may not be cost effective. By means of a bio-economic model for brown rot in the Dutch potato production chain, the efficacy of different control options was quantitatively analyzed. An impact analysis was performed using the methodology of "design of experiments" to quantify the effect of factors in interaction on incidence and costs of brown rot. Factors can be grouped as policy, sector, economic, and exogenous factors. Results show that brown rot incidence and economic consequences are determined predominantly by policy and sector factors and, to a lesser extent, by economic and exogenous factors. Scenario studies were performed to elucidate how the government and sector can optimize the cost-effectiveness of brown rot control. Optimal cost-effectiveness of control requires cooperation of the sector and government, in which case brown rot incidence can be reduced by 75% and the costs of control can be reduced by at least 2 million euros per year. This study demonstrates quantitatively the potential contribution of an integrated approach to cost-effective disease control at chain level. PMID:18943634

Breukers, Annemarie; van der Werf, Wopke; Kleijnen, Jack P C; Mourits, Monique; Lansink, Alfons Oude

2007-08-01

334

Quantitative analysis for the effect of plant oil and fatty acid on Tuber melanosporum culture by uniform design combined with partial least squares regression.  

PubMed

Uniform design and partial least squares regression were adopted to quantitatively analyze the effects of plant oil and fatty acid as well as their addition amount and addition time on the performance of Tuber melanosporum submerged fermentation. The regression models showed the optimal scheme was the addition of 1.2 mL soybean oil on day 9, which was validated by experiment. The maximal biomass of 25.89 +/- 1.01 g/L and extracellular polysaccharides (EPS) production of 6.51 +/- 0.68 g/L were obtained, which were enhanced by 18.5% and 86%, respectively. Palmitic acid was identified to be the key component to stimulate the cell growth and EPS biosynthesis, and stearic acid was beneficial for the production of intracellular polysaccharides. Not only the biomass but also EPS production obtained in this work are the highest reported in the batch fermentation of truffle. PMID:20473608

Liu, Rui-Sang; Tang, Ya-Jie

2010-05-15

335

Diagnostic criteria of traumatic central cord syndrome. Part 2: A Questionnaire Survey among Spine Specialists  

Microsoft Academic Search

Study design:A questionnaire survey.Objectives:To evaluate the need for the introduction of quantitative diagnostic criteria for the traumatic central cord syndrome (TCCS).Setting:An online questionnaire survey with participants from all over the world.Methods:An invitation to participate in an eight-item online survey questionnaire was sent to surgeon members of AOSpine International.Results:Out of 3340 invited professionals, 157 surgeons (5%) from 41 countries completed the

J. J. van Middendorp; M. H. Pouw; K. C. Hayes; R. Williams; H. S. Chhabra; C. Putz; R. P. H. Veth; A. C. H. Geurts; S. Aito; J. Kriz; W. McKinley; F W A van Asbeck; A. Curt; M. G. Fehlings; H. van de Meent; A. J. F. Hosman; JJ van Middendorp

2010-01-01

336

Vital and Health Statistics Series 2, Number 158: Responsive Design, Weighting, and Variance Estimation in the 2006-2010 National Survey of Family Growth.  

National Technical Information Service (NTIS)

The National Survey of Family Growth (NSFG) collects data on pregnancy, childbearing, mens and womens health, and parenting from a national sample of men and women aged 15-44 in the United States. The 2006-2010 NSFG design was a significant departure from...

2013-01-01

337

Quality control systems for pipeline welding -a model and quantitative analysis; Part I: quality control system design and operation  

SciTech Connect

This paper relies in part on experience gained in conjunction with the Office of the Federal Inspector's (OFI) monitoring of construction of the Eastern and Western Legs of the Alaska Natural Gas Transportation System (ANGTS). The OFI is an independent federal agency established to monitor ANGTS, a 4800 mile (7700 km), large-diameter, high-pressure gas pipeline designed to transport 2 to 2.4 billion cubic feet per day (56.6 to 67.9 million m/sup 3//day) of North Slope gas to the ''Lower 48'' states. The Eastern Leg was completed by the Northern Plains Natural Gas Company of Omaha, Neb., in the fall of 1982, while the Western Leg was constructed by the Pacific Gas Transmission Company of San Francisco, Calif., in the summer of 1981. The ANGTS monitoring experience was supplemented by reviews of a number of other large-scale pipeline construction projects, which include: the Canadian portion of the ANGTS; the Western Delivery System, related to ANGTS and constructed by Northwest Pipeline; the TransAlaska Pipeline System; and the Trailblazer Pipeline.

Cook, P.L.

1985-03-01

338

A survey of multi-agent organizational paradigms  

Microsoft Academic Search

Many researchers have demonstrated that the organiza- tional design employed by a system can have a significant, quantitative effect on its performance characteristics. A range of organizational strategies have emerged from this line of research, each with different strengths and weak- nesses. In this article we present a survey of the major orga- nizational paradigms used in multi-agent systems. These

BRYAN HORLING; VICTOR LESSER

2005-01-01

339

Whole genome survey of copy number variation in the spontaneously hypertensive rat: relationship to quantitative trait loci, gene expression, and blood pressure.  

PubMed

Copy number variation has emerged recently as an important genetic mechanism leading to phenotypic heterogeneity. The aim of our study was to determine whether copy number variants (CNVs) exist between the spontaneously hypertensive rat (SHR) and its control strain, the Wistar-Kyoto rat, whether these map to quantitative trait loci in the rat and whether CNVs associate with gene expression or blood pressure differences between the 2 strains. We performed a comparative genomic hybridization assay between SHR and Wistar-Kyoto strains using a whole-genome array. In total, 16 CNVs were identified and validated (6 because of a relative loss of copy number in the SHR and 10 because of a relative gain). CNVs were present on rat autosomes 1, 3, 4, 6, 7, 10, 14, and 17 and varied in size from 10.0 kb to 1.6 Mb. Most of these CNVs mapped to chromosomal regions within previously identified quantitative trait loci, including those for blood pressure in the SHR. Transcriptomic experiments confirmed differences in the renal expression of several genes (including Ms4a6a, Ndrg3, Egln1, Cd36, Sema3a, Ugt2b, and Idi21) located in some of the CNVs between SHR and Wistar-Kyoto rats. In F(2) animals derived from an SHRxWistar-Kyoto cross, we also found a significant increase in blood pressure associated with an increase in copy number in the Egln1 gene. Our findings suggest that CNVs may play a role in the susceptibility to hypertension and related traits in the SHR. PMID:20231529

Charchar, Fadi J; Kaiser, Michael; Bingham, Andrew J; Fotinatos, Nina; Ahmady, Fahima; Tomaszewski, Maciej; Samani, Nilesh J

2010-03-15

340

Quantitative analysis  

PubMed Central

Quantitative analysis permits the isolation of invariant relations in the study of behavior. The parameters of these relations can serve as higher-order dependent variables in more extensive analyses. These points are illustrated by reference to quantitative descriptions of performance maintained by concurrent schedules, multiple schedules, and signal-detection procedures. Such quantitative descriptions of empirical data may be derived from mathematical theories, which in turn can lead to novel empirical analyses so long as their terms refer to behavioral and environmental events. Thus, quantitative analysis is an integral aspect of the experimental analysis of behavior.

Nevin, John A.

1984-01-01

341

Geothermal energy as a source of electricity. A worldwide survey of the design and operation of geothermal power plants  

SciTech Connect

An overview of geothermal power generation is presented. A survey of geothermal power plants is given for the following countries: China, El Salvador, Iceland, Italy, Japan, Mexico, New Zealand, Philippines, Turkey, USSR, and USA. A survey of countries planning geothermal power plants is included. (MHR)

DiPippo, R.

1980-01-01

342

A Mixed Model Design Study of RN to BS Distance Learning:Survey of Graduates' Perceptions of Strengths and Challenges  

ERIC Educational Resources Information Center

|This article reports on findings from a survey administered to graduates of a distance learning RN-to-BS completion program. A questionnaire was constructed to examine graduate experiences and perceptions regarding distance learning formats, course content, time management, student empowerment, and program support. A total of 251 surveys were…

Lock, Leonard K.; Schnell, Zoanne; Pratt-Mullen, Jerrilynn

2011-01-01

343

Response rates with different distribution methods and reward, and reproducibility of a quantitative food frequency questionnaire  

Microsoft Academic Search

Objectives: To evaluate the use of a self-administered quantitative food frequency questionnaire (QFFQ) in a national dietary survey concerning (a) response rates with different distribution methods and reward; (b) degree of underreporting of energy intake; (c) reproducibility of the QFFQ; and (d) seasonal variation on reported intake. Design and subjects: A pilot study was performed in 1992 to test response

L Johansson; K Solvoll; S Opdahl; G-E Aa Bjørneboe; CA Drevon

1997-01-01

344

Barriers to effective diagnosis and management of a bleeding patient with undiagnosed bleeding disorder across multiple specialties: results of a quantitative case-based survey  

PubMed Central

Background: Bleeding symptoms commonly seen by multiple physician specialties may belie undiagnosed congenital or acquired bleeding disorders. Acquired hemophilia is a potentially life-threatening cause of unexplained acute bleeding manifested by an abnormal activated partial thromboplastin time (aPTT) that does not correct with 1:1 mixing with normal plasma. Methods: Practicing physicians (hematology/oncology, emergency medicine, geriatrics, internal medicine, rheumatology, obstetrics and gynecology, critical care medicine, and general surgery) completed an online survey based on a hypothetical case scenario. Results: Excluding surgeons and obstetrician/gynecologist respondents, 302 physicians (about 50 per specialty) were presented with an older adult woman complaining of recurrent epistaxis. Nearly 90% ordered a complete blood count and coagulation studies (aPTT, prothrombin time [PT]/international normalized ratio [INR]). Despite a prolonged aPTT of 42 seconds, <50% of nonhematologists would repeat the aPTT, and <45% would consult a hematologist; emergency medicine physicians were least likely (10%) and rheumatologists were most likely (43%) to consult. After presentation weeks later with bruising and abdominal/back pain, ?90% of physicians within each specialty ordered a complete blood count or PT/INR/aPTT. Despite an aPTT of 63 seconds, the majority did not repeat the aPTT. At this point, approximately 75% of internal medicine and geriatric physicians indicated they would consult a hematologist, versus 47% in emergency medicine and 50% in critical care. All participants preferred abdominal computed tomography (80%–84%). After 12 hours of additional observation, 73% to 94% of respondents consulted a hematologist. Complete blood count revealed anemia and an aPTT twice the upper limit of normal; emergency medicine physicians remained least likely to request a consult. Conclusion: Determining the cause of an abnormal coagulation study result should carry equal weight as looking for the site of bleeding and could be facilitated by consultation with a hematologist. Insight from this survey highlights knowledge and practice gaps that could be the target of focused educational initiatives.

Reding, Mark T; Cooper, David L

2012-01-01

345

Quantitative fractography  

Microsoft Academic Search

In many disciplines, such as biology, botany, geology, materials science and medicine, quantitative image analysis is being used to an increasing extent. In materials science this technique makes it possible to relate the microsctructure to the mechanical properties. In this review we shall show that image analysis can be applied in a fractographic study to characterize quantitatively the morphology of

J. L. Chermant; M. Coster

1979-01-01

346

Quantitative Methods of Edge Detection.  

National Technical Information Service (NTIS)

Most local operators used in edge detection can be modelled by one of two methods: edge enhancement/thresholding and edge fitting. This dissertation presents a quantitative design and performance evaluation of these methods. The design techniques are base...

I. E. Abdou

1978-01-01

347

Surveys: Tracking Opinion  

NSDL National Science Digital Library

Surveys are the scientific instrument of the social and behavioral sciences. The National Science Foundation (NSF) conducts or supports surveys that document peopleâs demographic information, income, attitudes, voting behavior, and feelings. Major survey activities supported include the General Social Survey, the Panel Study of Income Dynamics, and the American National Election Studies. Other NSF surveys are the principal source of information about the science and engineering enterprise in the United States. An overview of survey design relative to sample selection and type of question is presented along with discussion of specific surveys and the future use of surveys.

348

78 FR 5459 - Medicare Program; Request for Information To Aid in the Design and Development of a Survey...  

Federal Register 2010, 2011, 2012, 2013

...such as communication between patients and health care providers...care; care coordination; patient preferences; environment; and safety. Publicly available surveys...measures indicating-- (1) patient experience and/or level...

2013-01-25

349

Screening for low bone mass with quantitative ultrasonography in a community without dual-energy X-ray absorptiometry: population-based survey  

PubMed Central

Background Dual-energy x-ray absorptiometry (DXA) is the criterion standard to identify low bone mineral density (BMD), but access to axial DXA may be limited or cost prohibitive. We screened for low bone mass with quantitative ultrasonography (QUS) in a community without DXA, analyzed its reliability and obtained reference values and estimated the prevalence of low QUS values. Methods We enrolled 6493 residents of Kinmen, Taiwan, and a reference group (96 men and 70 women aged 20–29 years) for this cross-sectional, community-based study. All participants completed a questionnaire and underwent ultrasonographic measurements. Reliability and validity of QUS measurements were evaluated. Broadband ultrasound attenuation (BUA) values were obtained and statistically analyzed by age, sex and weight. Annual loss of BUA was determined. Trends in the prevalence of QUS scores were evaluated. Results Two QUS were used and had a correlation coefficient of 0.90 (p < 0.001). Calcaneal BUA was significantly correlated with BMD in the femoral neck (r = 0.67, p < 0.001) and BMD of the total lumbar spine (r = 0.59, p < 0.001). BUAs in the reference group were 92.72 ± 13.36 and 87.90 ± 10.68 dB/MHz for men and women, respectively. Estimated annual losses of calcaneal BUA were 0.83% per year for women, 0.27% per year for men, and 0.51% per year for the total population. The prevalence of severely low QUS values (T-score = -2.5) tended to increase with aging in both sexes (p < 0.001). Across age strata, moderately low QUS values (-2.5 < T-score < -1.0) were 31.6–41.0% in men and 23.7–38.1% in women; a significant trend with age was observed in men (p < 0.001). Conclusion Age-related decreases in calcaneal ultrasonometry, which reflected the prevalence of low bone mass, were more obvious in women than in men.

Yang, Nan-Ping; Jen, Ian; Chuang, Shao-Yuan; Chen, Shui-Hu; Chou, Pesus

2006-01-01

350

Validity and reliability of responses to a self-report home safety survey designed for use in a community-based child injury prevention programme  

Microsoft Academic Search

Objective: To quantify the validity and reliability of responses to a self-report home safety survey designed for use in a community-based child injury prevention program. Methods: A cross-sectional study of home-based injury risk factors and safety practices was administered to a random sample of households (n?=?614) in two rural and remote communities in Queensland, Australia using a Computer Assisted Telephone

Emily Yorkston; Cathy Turner; Philip Schluter; Rod McClure

2005-01-01

351

Flexibility in Research Designs in Empirical Software Engineering  

Microsoft Academic Search

Problem outline: It is common to classify empirical research designs as either qualitative or quantitative. Typically, particular research methods (e.g., case studies, action research, experiments and surveys) are associated with one or the other of these types of design. Studies in empirical software engineering (ESE) are often exploratory and often involve software developers and development organizations. As a consequence, it

Tore Dybå

352

EuropeaN Energy balance Research to prevent excessive weight Gain among Youth (ENERGY) project: Design and methodology of the ENERGY cross-sectional survey  

PubMed Central

Background Obesity treatment is by large ineffective long term, and more emphasis on the prevention of excessive weight gain in childhood and adolescence is warranted. To inform energy balance related behaviour (EBRB) change interventions, insight in the potential personal, family and school environmental correlates of these behaviours is needed. Studies on such multilevel correlates of EBRB among schoolchildren in Europe are lacking. The ENERGY survey aims to (1) provide up-to-date prevalence rates of measured overweight, obesity, self-reported engagement in EBRBs, and objective accelerometer-based assessment of physical activity and sedentary behaviour and blood-sample biomarkers of metabolic function in countries in different regions of Europe, (2) to identify personal, family and school environmental correlates of these EBRBs. This paper describes the design, methodology and protocol of the survey. Method/Design A school-based cross-sectional survey was carried out in 2010 in seven different European countries; Belgium, Greece, Hungary, the Netherlands, Norway, Slovenia, and Spain. The survey included measurements of anthropometrics, child, parent and school-staff questionnaires, and school observations to measure and assess outcomes (i.e. height, weight, and waist circumference), EBRBs and potential personal, family and school environmental correlates of these behaviours including the social-cultural, physical, political, and economic environmental factors. In addition, a selection of countries conducted accelerometer measurements to objectively assess physical activity and sedentary behaviour, and collected blood samples to assess several biomarkers of metabolic function. Discussion The ENERGY survey is a comprehensive cross-sectional study measuring anthropometrics and biomarkers as well as assessing a range of EBRBs and their potential correlates at the personal, family and school level, among 10-12 year old children in seven European countries. This study will result in a unique dataset, enabling cross country comparisons in overweight, obesity, risk behaviours for these conditions as well as the correlates of engagement in these risk behaviours.

2011-01-01

353

Doctoral Training in Statistics, Measurement, and Methodology in Psychology: Replication and Extension of Aiken, West, Sechrest, and Reno's (1990) Survey of PhD Programs in North America  

Microsoft Academic Search

In a survey of all PhD programs in psychology in the United States and Canada, the authors documented the quantitative methodology curriculum (statistics, measurement, and research design) to examine the extent to which innovations in quantitative methodology have diffused into the training of PhDs in psychology. In all, 201 psychology PhD programs (86%) participated. This survey replicated and extended a

Leona S. Aiken; Stephen G. West; Roger E. Millsap

2008-01-01

354

Literature survey, numerical examples, and recommended design studies for main-coolant pumps. Final report. [PWR; BWR  

Microsoft Academic Search

This report presents an up-to-date literature survey, examples of calculations of seal forces or other pump properties, and recommendations for future work pertaining to primary coolant pumps and primary recirculating pumps in the nuclear power industry. Five main areas are covered: pump impeller forces, fluid annuli, bearings, seals, and rotor calculations. The main conclusion is that forces in pump impellers

P. E. Allaire; L. E. Barrett

1982-01-01

355

Second-Generation Cobas AmpliPrep/Cobas TaqMan HCV Quantitative Test for Viral Load Monitoring: a Novel Dual-Probe Assay Design  

PubMed Central

Hepatitis C virus (HCV) RNA viral load (VL) monitoring is a well-established diagnostic tool for the management of chronic hepatitis C patients. HCV RNA VL results are used to make treatment decisions with the goal of therapy to achieve an undetectable VL result. Therefore, a sensitive assay with high specificity in detecting and accurately quantifying HCV RNA across genotypes is critical. Additionally, a lower sample volume requirement is desirable for the laboratory and the patient. This study evaluated the performance characteristics of a second-generation real-time PCR assay, the Cobas AmpliPrep/Cobas TaqMan HCV quantitative test, version 2.0 (CAP/CTM HCV test, v2.0), designed with a novel dual-probe approach and an optimized automated extraction and amplification procedure. The new assay demonstrated a limit of detection and lower limit of quantification of 15 IU/ml across all HCV genotypes and was linear from 15 to 100,000,000 IU/ml with high accuracy (<0.2-log10 difference) and precision (standard deviation of 0.04 to 0.22 log10). A specificity of 100% was demonstrated with 600 HCV-seronegative specimens without cross-reactivity or interference. Correlation to the Cobas AmpliPrep/Cobas TaqMan HCV test (version 1) was good (n = 412 genotype 1 to 6 samples, R2 = 0.88; R2 = 0.94 without 105 genotype 4 samples). Paired plasma and serum samples showed similar performance (n = 25, R2 = 0.99). The sample input volume was reduced from 1 to 0.65 ml in the second version. The CAP/CTM HCV test, v2.0, demonstrated excellent performance and sensitivity across all HCV genotypes with a smaller sample volume. The new HCV RNA VL assay has performance characteristics that make it suitable for use with currently available direct-acting antiviral agents.

Zitzer, Heike; Heilek, Gabrielle; Truchon, Karine; Susser, Simone; Vermehren, Johannes; Sizmann, Dorothea; Cobb, Bryan

2013-01-01

356

How To Sample in Surveys. The Survey Kit, Volume 6.  

ERIC Educational Resources Information Center

|The nine-volume Survey Kit is designed to help readers prepare and conduct surveys and become better users of survey results. All the books in the series contain instructional objectives, exercises and answers, examples of surveys in use, illustrations of survey questions, guidelines for action, checklists of "dos and don'ts," and annotated…

Fink, Arlene

357

Knowing Where You Are: Using coastal observatories to design and interpret plankton surveys in the New York Bight Apex  

NASA Astrophysics Data System (ADS)

As part of LaTTE, the New York Bight Apex benefited from considerable integrated ocean observing system infrastructure. To apply this IOOS capability to a fisheries problem, a joint Rutgers-NOAA Fisheries pilot project was launched in June 2004 to conduct periodic hydroacoustic/ichthyoplankton surveys throughout the summer and into the autumn. These surveys were aimed at sampling important features (the Hudson River Plume, the Cold Pool, and shelf water) as they changed through time; identifying important water mass-community associations; and moving toward methods of Essential Fish Habitat determination for pelagic habitats. Here we present preliminary findings from the field effort, and outline our use of IOOS capability in fisheries research.

Quinlan, J. A.; Manderson, J. P.; Shaheen, P.; Law, C. G.

2004-12-01

358

[The German Health Interview and Examination Survey for Children and Adolescents (KiGGS): sample design, response and nonresponse analysis].  

PubMed

From May 2003 to May 2006, the Robert Koch Institute conducted the German Health Interview and Examination Survey for Children and Adolescents (KiGGS). Aim of this nationwide interview and examination survey was to collect, for the first time, comprehensive and nationwide data on the health status of children and adolescents aged 0 to 17 years. Subject recruitment was carried out in two steps: first, 167 study locations (sample points) were chosen; second, subjects were selected from the official registers of residents of the local residents' registration offices. The percentage of quality-neutral drop-outs was comparatively low (5.3%). The participation rate was 66.6% and showed only little variation between age groups and sexes, but marked variation between resident aliens and Germans, between inhabitants of cities with a population of 100,000 or more and sample points with fewer inhabitants, as well as between the old West German states and the newly-formed German states (incl. Berlin). A total of 17,641 children and adolescents were surveyed, of whom 8,985 were boys and 8,656 were girls. The completeness of the data sets in relation to the modules was good. The main reasons for non-participation were failure to appear at an agreed appointment time (or cancellation of the appointment at short notice), the refusal of the child/adolescent himself, or lack of interest of the parents. PMID:17514438

Kamtsiuris, P; Lange, M; Schaffrath Rosario, A

359

QUANTITATIVE MORPHOLOGY  

EPA Science Inventory

Abstract: In toxicology, the role of quantitative assessment of brain morphology can be understood in the context of two types of treatment-related alterations. One type of alteration is specifically associated with treatment and is not observed in control animals. Measurement ...

360

Yeasts in floral nectar: a quantitative survey  

PubMed Central

Background and Aims One peculiarity of floral nectar that remains relatively unexplored from an ecological perspective is its role as a natural habitat for micro-organisms. This study assesses the frequency of occurrence and abundance of yeast cells in floral nectar of insect-pollinated plants from three contrasting plant communities on two continents. Possible correlations between interspecific differences in yeast incidence and pollinator composition are also explored. Methods The study was conducted at three widely separated areas, two in the Iberian Peninsula (Spain) and one in the Yucatán Peninsula (Mexico). Floral nectar samples from 130 species (37–63 species per region) in 44 families were examined microscopically for the presence of yeast cells. For one of the Spanish sites, the relationship across species between incidence of yeasts in nectar and the proportion of flowers visited by each of five major pollinator categories was also investigated. Key Results Yeasts occurred regularly in the floral nectar of many species, where they sometimes reached extraordinary densities (up to 4 × 105 cells mm?3). Depending on the region, between 32 and 44 % of all nectar samples contained yeasts. Yeast cell densities in the order of 104 cells mm?3 were commonplace, and densities >105 cells mm?3 were not rare. About one-fifth of species at each site had mean yeast cell densities >104 cells mm?3. Across species, yeast frequency and abundance were directly correlated with the proportion of floral visits by bumble-bees, and inversely with the proportion of visits by solitary bees. Conclusions Incorporating nectar yeasts into the scenario of plant–pollinator interactions opens up a number of intriguing avenues for research. In addition, with yeasts being as ubiquitous and abundant in floral nectars as revealed by this study, and given their astounding metabolic versatility, studies focusing on nectar chemical features should carefully control for the presence of yeasts in nectar samples.

Herrera, Carlos M.; de Vega, Clara; Canto, Azucena; Pozo, Maria I.

2009-01-01

361

Top Ten Mistakes of Shopping Cart Design Revisited: A Survey of 500 Top E-Commerce Websites  

Microsoft Academic Search

Summary: A list of common mistakes with e-commerce shopping cart design were identified in a previous issue of Usability News. This article revisits that list and reviews how 500 of the top Internet retail sites of today implemented their shopping cart design.

Barbara S. Chaparro; Shivashankar Naidu

362

Design of Low-Cost Structures for Photovoltaic Arrays. Task I Technical Report. Survey of Array Structural Characteristics.  

National Technical Information Service (NTIS)

In developing design concepts for low cost photovoltaic arrays one must consider structural details and functions, manufacturing capability, installation methods, and the maintenance of operating systems. So much is involved in establishing feasible suppo...

1978-01-01

363

A survey of attitudes and factors associated with successful cardiopulmonary resuscitation (CPR) knowledge transfer in an older population most likely to witness cardiac arrest: design and methodology  

PubMed Central

Background Overall survival rates for out-of-hospital cardiac arrest rarely exceed 5%. While bystander cardiopulmonary resuscitation (CPR) can increase survival for cardiac arrest victims by up to four times, bystander CPR rates remain low in Canada (15%). Most cardiac arrest victims are men in their sixties, they usually collapse in their own home (85%) and the event is witnessed 50% of the time. These statistics would appear to support a strategy of targeted CPR training for an older population that is most likely to witness a cardiac arrest event. However, interest in CPR training appears to decrease with advancing age. Behaviour surrounding CPR training and performance has never been studied using well validated behavioural theories. Methods/Design The overall goal of this study is to conduct a survey to better understand the behavioural factors influencing CPR training and performance in men and women 55 years of age and older. The study will proceed in three phases. In phase one, semi-structured qualitative interviews will be conducted and recorded to identify common categories and themes regarding seeking CPR training and providing CPR to a cardiac arrest victim. The themes identified in the first phase will be used in phase two to develop, pilot-test, and refine a survey instrument based upon the Theory of Planned Behaviour. In the third phase of the project, the final survey will be administered to a sample of the study population over the telephone. Analyses will include measures of sampling bias, reliability of the measures, construct validity, as well as multiple regression analyses to identify constructs and beliefs most salient to seniors' decisions about whether to attend CPR classes or perform CPR on a cardiac arrest victim. Discussion The results of this survey will provide valuable insight into factors influencing the interest in CPR training and performance among a targeted group of individuals most susceptible to witnessing a victim in cardiac arrest. The findings can then be applied to the design of trials of various interventions designed to promote attendance at CPR classes and improve CPR performance. Trial registration ClinicalTrials.gov NCT00665288

Vaillancourt, Christian; Grimshaw, Jeremy; Brehaut, Jamie C; Osmond, Martin; Charette, Manya L; Wells, George A; Stiell, Ian G

2008-01-01

364

Microclimate survey  

SciTech Connect

Solar applications studies to this time have relied upon regional climatic data. The US Government does not maintain any weather stations on a fine enough grid to evaluate the microclimate of a buildable site away from the station. Right now the best data comes from the National Climatic Center. Designers and builders agree that this data is good enough for rule of thumb calculations. A survey is outlined that can be used to provide engineering specifics to solar designers to assure performance at the building site.

Gilman, R.A.

1980-01-01

365

The Math You Need, When You Need It: Student-Centered Web Resources Designed to Decrease Math Review and Increase Quantitative Geology in the Classroom  

Microsoft Academic Search

Introductory geoscience courses are rife with quantitative concepts from graphing to rates to unit conversions. Recent research suggests that supplementary mathematical instruction increases post-secondary students' retention and performance in science courses. Nonetheless, many geoscience faculty feel that they do not have enough time to cover all the geoscience content, let alone covering the math they often feel students should have

J. M. Wenner; E. M. Baer

2007-01-01

366

Quantitative codon optimisation of DNA libraries encoding sub-random peptides: design and characterisation of a novel library encoding transmembrane domain peptides  

Microsoft Academic Search

Codons for amino acids sharing similar chemical properties seem to cluster on the genetic codon table. Such a geographical distribution of the codons was exploited to create chemically synthe- sised DNA that encodes peptide libraries containing only a subset of the 20 natural amino acids. The frequency of each amino acid in the subset was further optimised by quantitatively manipulating

Ola Larsson; Dorit Thormeyer; Arian Asinger; Bjorn Wihlen; Claes Wahlestedt; Zicai Liang

2002-01-01

367

Towards a capabilities database to inform inclusive design: experimental investigation of effective survey-based predictors of human-product interaction.  

PubMed

A key issue in the field of inclusive design is the ability to provide designers with an understanding of people's range of capabilities. Since it is not feasible to assess product interactions with a large sample, this paper assesses a range of proxy measures of design-relevant capabilities. It describes a study that was conducted to identify which measures provide the best prediction of people's abilities to use a range of products. A detailed investigation with 100 respondents aged 50-80 years was undertaken to examine how they manage typical household products. Predictor variables included self-report and performance measures across a variety of capabilities (vision, hearing, dexterity and cognitive function), component activities used in product interactions (e.g. using a remote control, touch screen) and psychological characteristics (e.g. self-efficacy, confidence with using electronic devices). Results showed, as expected, a higher prevalence of visual, hearing, dexterity, cognitive and product interaction difficulties in the 65-80 age group. Regression analyses showed that, in addition to age, performance measures of vision (acuity, contrast sensitivity) and hearing (hearing threshold) and self-report and performance measures of component activities are strong predictors of successful product interactions. These findings will guide the choice of measures to be used in a subsequent national survey of design-relevant capabilities, which will lead to the creation of a capability database. This will be converted into a tool for designers to understand the implications of their design decisions, so that they can design products in a more inclusive way. PMID:22133976

Tenneti, Raji; Johnson, Daniel; Goldenberg, Liz; Parker, Richard A; Huppert, Felicia A

2011-11-30

368

Revisiting the Relationship Between Crime and Architectural Design: An Analysis of Data from HUD's 1994 Survey of Public Housing Residents  

Microsoft Academic Search

The authors look at type of building design and size of development with respect to major crime problems identified by public housing residents. Size of development appears to be more closely associated with the presence of major crime problems than does type of building. Overall, high-rise buildings fare better than one would expect, given the conventional wisdom that such dwellings

Harold R. Holzman

369

INCLUDING HUMAN BEHAVIOR IN PRODUCT SIMULATIONS FOR THE INVESTIGATION OF USE PROCESSES IN CONCEPTUAL DESIGN: A SURVEY  

Microsoft Academic Search

In this paper, approaches for behavioral simulation of humans and human-artifact systems are reviewed The objective was to explore available knowledge for the development of a new method and system for the simulation of use processes of consumer durables in conceptual design. A key issue is to resolve the trade-off between minimizing the modeling and computing effort on the one

Imre Horváth

370

Web Survey Design in ASP.Net 2.0: A Simple Task with One Line of Code  

ERIC Educational Resources Information Center

|Over the past few years, more and more companies have been investing in electronic commerce (EC) by designing and implementing Web-based applications. In the world of practice, the importance of using Web technology to reach individual customers has been presented by many researchers. This paper presents an easy way of conducting marketing…

Liu, Chang

2007-01-01

371

Survey of Fusion Reactor Technology. Conceptural Design of Tokamak Fusion Power Reactor and Development of Experimental Technology for Fusion Research.  

National Technical Information Service (NTIS)

1. Conceptual design of fusion reactor: A major objective of the present study was to determine the key materials requirements and to assess the potential of the candidate materials for the first wall/blanket of TFPR. A qualitative and methodological stud...

H. D. Kang C. K. Whang B. H. Choi K. W. Lee S. R. In

1985-01-01

372

The contribution of information technology to call center productivity : An organizational design analysis  

Microsoft Academic Search

Purpose – This paper seeks to offer a strategic and socio technical analysis of the productivity of telephone call centers from the perspective of Galbraith's organizational design theory. Design\\/methodology\\/approach – The paper is based on a quantitative survey of 155 call center managers in France, which benefited from extensive preparation through ten case studies. Findings – When focusing the analysis

Frantz Rowe; Rolande Marciniak; Cécile Clergeau

2011-01-01

373

City Governments and Aging in Place: Community Design, Transportation and Housing Innovation Adoption  

ERIC Educational Resources Information Center

|Purpose of the study: To examine the characteristics associated with city government adoption of community design, housing, and transportation innovations that could benefit older adults. Design and methods: A mixed-methods study with quantitative data collected via online surveys from 62 city planners combined with qualitative data collected via…

Lehning, Amanda J.

2012-01-01

374

Stream chemistry in the eastern United States. 1. Synoptic survey design, acid-base status, and regional patterns  

SciTech Connect

To assess the regional acid-base status of streams in the mid-Atlantic and southern US, spring base flow chemistry was surveyed in a probability sample of 500 stream reaches representing a population of 64,300 reaches (224,000 km). Approximately half of the streams had acid-neutralizing capacity (ANC) {le} 200 {mu}eq L{sup {minus}1}. Acidic (ANC {le} 0) streams were located in the highlands of the Mid-Atlantic region (southern New York to southern Virginia, 2,330 km), in coastal lowlands of the Mid-Atlantic (2,600 km), and in Florida (462 km). Acidic streams were rare (less than 1%) in the highlands of the Southeast. Inorganic monomeric aluminum (Al{sub im}) concentrations were highest in acidic streams of the Mid-Atlantic Highlands where over 70% of the acidic streams had Al{sub im} greater than 100 {mu}g L{sup {minus}1}, a concentration above which deleterious biological effects have frequently been reported. Dissolved organic carbon concentrations were much higher in lowland coastal streams, compared with inland streams. The authors data supports a hypothesis that atmospheric sources and watershed retention control regional patterns in streamwater sulfate concentrations. Most stream watersheds retain the vast majority of the total nitrogen loading from wet deposition. The data suggest, however, that some deposition nitrogen may be reaching streams in the Northern Appalachians.

Kaufmann, P.R.; Herlihy, A.T.; Mitch, M.E.; Messer, J.J. (Utah State Univ., Logan (United States)); Overton, W.S. (Oregon State Univ., Corvallis (United States))

1991-04-01

375

Stream chemistry in the eastern United States, 1, Synoptic survey design, acid-base status, and regional patterns  

NASA Astrophysics Data System (ADS)

To assess the regional acid-base status of streams in the mid-Atlantic and southeastern United States, spring base flow chemistry was surveyed in a probability sample of 500 stream reaches representing a population of 64,300 reaches (224,000 km). Approximately half of the streams had acid-neutralizing capacity (ANC) ? 200 ?eq L-1. Acidic (ANC ? 0) streams were located in the highlands of the Mid-Atlantic region (southern New York to southern Virginia, 2330 km), in coastal lowlands of the Mid-Atlantic (2600 km), and in Florida (462 km). Acidic streams were rare (less than 1%) in the highlands of the Southeast. Inorganic monomeric aluminum (Alim) concentrations were highest in acidic streams of the Mid-Atlantic Highlands where over 70% of the acidic streams had Alim greater than 100 ?g L-l, a concentration above which deleterious biological effects have frequently been reported. Dissolved organic carbon concentrations were much higher in lowland coastal streams, compared with inland streams. Our data support a hypothesis that atmospheric sources and watershed retention control regional patterns in streamwater sulfate concentrations. Most stream watersheds retain the vast majority of the total nitrogen loading from wet deposition. The data suggest, however, that some deposition nitrogen may be reaching streams in the Northern Appalachians. These results show that acidic surface waters are found outside the glaciated northeastern portions of the United States and that watershed sulfate retention is not sufficient to prevent acidic conditions in some Mid-Atlantic Highlands streams.

Kaufmann, Philip R.; Herlihy, Alan T.; Mitch, Mark E.; Messer, Jay J.; Overton, W. Scott

1991-04-01

376

Instrument development, study design implementation, and survey conduct for the national social life, health, and aging project.  

PubMed

The National Opinion Research Center, led by a team of investigators at the University of Chicago, conducted more than 3,000 in-person interviews with a nationally representative sample of adults aged 57-85 years. Data collection included in-person questionnaire items, an extensive array of biomeasures, and a postinterview self-administered questionnaire. The National Social Life, Health, and Aging Project (NSHAP) interview included the collection of 13 biomeasures: weight, waist circumference, height, blood pressure, smell, saliva collection, taste, a self-administered vaginal swab for female respondents, "Get Up and Go," distance vision, touch, oral mucosal transudate (Orasure) human immunodeficiency virus test, and blood spots. This article discusses the development of NSHAP's instruments and implementation of the study design. Measures, such as response and cooperation rates, are also provided to evaluate the effectiveness of the design and implementation. PMID:19357076

Smith, Stephen; Jaszczak, Angela; Graber, Jessica; Lundeen, Katie; Leitsch, Sara; Wargo, Erin; O'Muircheartaigh, Colm

2009-04-07

377

Instrument Development, Study Design Implementation, and Survey Conduct for the National Social Life, Health, and Aging Project  

PubMed Central

The National Opinion Research Center, led by a team of investigators at the University of Chicago, conducted more than 3,000 in-person interviews with a nationally representative sample of adults aged 57–85 years. Data collection included in-person questionnaire items, an extensive array of biomeasures, and a postinterview self-administered questionnaire. The National Social Life, Health, and Aging Project (NSHAP) interview included the collection of 13 biomeasures: weight, waist circumference, height, blood pressure, smell, saliva collection, taste, a self-administered vaginal swab for female respondents, “Get Up and Go,” distance vision, touch, oral mucosal transudate (Orasure®) human immunodeficiency virus test, and blood spots. This article discusses the development of NSHAP’s instruments and implementation of the study design. Measures, such as response and cooperation rates, are also provided to evaluate the effectiveness of the design and implementation.

Jaszczak, Angela; Graber, Jessica; Lundeen, Katie; Leitsch, Sara; Wargo, Erin; O'Muircheartaigh, Colm

2009-01-01

378

Use of Web and In-Person Survey Modes to Gather Data from Young Adults on Sex and Drug Use: An Evaluation of Cost, Time, and Survey Error Based on a Randomized Mixed-Mode Design  

ERIC Educational Resources Information Center

|In a randomized test of mixed-mode data collection strategies, 386 participants in the Raising Healthy Children (RHC) Project were either (a) asked to complete a survey via the Internet and later offered the opportunity to complete the survey in person or (b) first offered an in-person survey, with the Web follow-up. The Web-first condition…

McMorris, Barbara J.; Petrie, Renee S.; Catalano, Richard F.; Fleming, Charles B.; Haggerty, Kevin P.; Abbott, Robert D.

2009-01-01

379

Quantitative Literacy  

NSDL National Science Digital Library

This resource guide from the Middle School Portal 2 project, written specifically for teachers, provides links to exemplary resources including background information, lessons, career information, and related national science education standards.On this wiki page, you will find online lessons, activities, and projects that allow students a range of real-world contexts. The Content Collections section contains sites that offer sets of problems and illustrations that connect middle school math to down-to-earth settings. The Interdisciplinary Lessons and Activities section offers activities and projects ready for interdisciplinary teaching. Each of the following sections focuses on a math topic: Data Analysis and Display, Probability, Measurement, Number and Operations. The resources offer mathematics in settings that deliberately cross over into other areas of the curriculum. Finally, for teachers looking for support in teaching quantitative literacy, a new approach for us all, Background Information for Teachers presents a select set of professional resources.

Herrera, Terese

2009-04-01

380

Design.  

ERIC Educational Resources Information Center

|Provides an annotated bibliography of resources on this month's theme "Design" for K-8 language arts, art and architecture, music and dance, science, math, social studies, health, and physical education. Includes Web sites, CD-ROMs and software, videos, books, audiotapes, magazines, professional resources and classroom activities. Features Art…

Online-Offline, 1998

1998-01-01

381

Design.  

ERIC Educational Resources Information Center

Provides an annotated bibliography of resources on this month's theme "Design" for K-8 language arts, art and architecture, music and dance, science, math, social studies, health, and physical education. Includes Web sites, CD-ROMs and software, videos, books, audiotapes, magazines, professional resources and classroom activities. Features Art…

Online-Offline, 1998

1998-01-01

382

DRAFT - Design of Radiological Survey and Sampling to Support Title Transfer or Lease of Property on the Department of Energy Oak Ridge Reservation  

SciTech Connect

The U.S. Department of Energy (DOE) owns, operates, and manages the buildings and land areas on the Oak Ridge Reservation (ORR) in Oak Ridge, Tennessee. As land and buildings are declared excess or underutilized, it is the intent of DOE to either transfer the title of or lease suitable property to the Community Reuse Organization of East Tennessee (CROET) or other entities for public use. It is DOE's responsibility, in coordination with the U.S. Environmental Protection Agency (EPA), Region 4, and the Tennessee Department of Environment and Conservation (TDEC), to ensure that the land, facilities, and personal property that are to have the title transferred or are to be leased are suitable for public use. Release of personal property must also meet site requirements and be approved by the DOE contractor responsible for site radiological control. The terms title transfer and lease in this document have unique meanings. Title transfer will result in release of ownership without any restriction or further control by DOE. Under lease conditions, the government retains ownership of the property along with the responsibility to oversee property utilization. This includes involvement in the lessee's health, safety, and radiological control plans and conduct of site inspections. It may also entail lease restrictions, such as limiting access to certain areas or prohibiting digging, drilling, or disturbing material under surface coatings. Survey and sampling requirements are generally more rigorous for title transfer than for lease. Because of the accelerated clean up process, there is an increasing emphasis on title transfers of facilities and land. The purpose of this document is to describe the radiological survey and sampling protocols that are being used for assessing the radiological conditions and characteristics of building and land areas on the Oak Ridge Reservation that contain space potentially available for title transfer or lease. After necessary surveys and sampling and laboratory analyses are completed, the data are analyzed and included in an Environmental Baseline Summary (EBS) report for title transfer or in a Baseline Environmental Analysis Report (BEAR) for lease. The data from the BEAR is then used in a Screening-Level Human Health Risk Assessment (SHHRA) or a risk calculation (RC) to assess the potential risks to future owners/occupants. If title is to be transferred, release criteria in the form of specific activity concentrations called Derived Concentration Guideline Levels (DCGLs) will be developed for the each property. The DCGLs are based on the risk model and are used with the data in the EBS to determine, with statistical confidence, that the release criteria for the property have been met. The goal of the survey and sampling efforts is to (1) document the baseline conditions of the property (real or personal) prior to title transfer or lease, (2) obtain enough information that an evaluation of radiological risks can be made, and (3) collect sufftcient data so that areas that contain minimal residual levels of radioactivity can be identified and, following radiological control procedures, be released from radiological control. (It should be noted that release from radiological control does not necessarily mean free release because DOE may maintain institutional control of the site after it is released from radiological control). To meet the goals of this document, a Data Quality Objective (DQO) process will be used to enhance data collection efficiency and assist with decision-making. The steps of the DQO process involve stating the problem, identifying the decision, identifying inputs to the decision, developing study boundaries, developing the decision rule, and optimizing the design. This document describes the DQOs chosen for surveys and sampling efforts performed for the purposes listed above. The previous version to this document focused on the requirements for radiological survey and sampling protocols that are be used for leasing. Because the primary focus at this time is on title transfer, th

Cusick L.T.

2002-09-25

383

Sport Management Survey. Employment Perspectives.  

ERIC Educational Resources Information Center

A survey of sport management positions was designed to determine projected vacancy rates in six sport management career areas. Respondents to the survey were also questioned regarding their awareness of college professional preparation programs. Results are presented. (MT)

Quain, Richard J.; Parks, Janet B.

1986-01-01

384

Streamlining volcano-related, web-based data display and design with a new U.S. Geological Survey Volcano Science Center website  

NASA Astrophysics Data System (ADS)

The goal of the newly designed U.S. Geological Survey (USGS) Volcano Science Center website is to provide a reliable, easy to understand, and accessible format to display volcano monitoring data and scientific information on US volcanoes and their hazards. There are greater than 150 active or potentially active volcanoes in the United States, and the Volcano Science Center aims to advance the scientific understanding of volcanic processes at these volcanoes and to lessen the harmful impacts of potential volcanic activity. To fulfill a Congressional mandate, the USGS Volcano Hazards Program must communicate scientific findings to authorities and the public in a timely and understandable form. The easiest and most efficient way to deliver this information is via the Internet. We implemented a new database model to organize website content, ensuring consistency, accuracy, and timeliness of information display. Real-time monitoring data is available for over 50 volcanoes in the United States, and web-site visitors are able to interact with a dynamic, map-based display system to access and analyze these data, which are managed by scientists from the five USGS volcano observatories. Helicorders, recent hypocenters, webcams, tilt measurements, deformation, gas emissions, and changes in hydrology can be viewed for any of the real-time instruments. The newly designed Volcano Science Center web presence streamlines the display of research findings, hazard assessments, and real-time monitoring data for the U.S. volcanoes.

Stovall, W. K.; Randall, M. J.; Cervelli, P. F.

2011-12-01

385

Design and Operation of the National Survey of Children's Health, 2007: Program and Collection Procedures. Vital and Health Statistics Series 1, Number 55, June 2012.  

National Technical Information Service (NTIS)

This report presents the development, plan, and operation of the 2007 National Survey of Childrens Health, a module of the State and Local Area Integrated Telephone Survey, conducted by the Centers for Disease Control and Preventions National Center for H...

2012-01-01

386

SurveyMonkey  

NSDL National Science Digital Library

Simple and straightforward in its design, SurveyMonkey is quite a valuable for anyone looking to make an online survey. Utilizing the free version here, visitors can create short surveys that use a number of question types and formats. Also, users can collect some basic data on respondents and save it for later use and consultation. This version is compatible with computers running all operating systems.

387

OSCE Mission Survey  

NSDL National Science Digital Library

Released on January 17 by the Organization for Security and Co-Operation in Europe (OSCE), this survey provides an overview of the mandates and other key information related to current OSCE field activities. Intended for practitioners involved in support of OSCE field activities as well as the interested public, the survey is designed to "facilitate reference to official OSCE documents and decisions on the subject." Users can read the survey by chapter in HTML format or in its entirety in .pdf format.

388

77 FR 50144 - Broad Stakeholder Survey  

Federal Register 2010, 2011, 2012, 2013

...Docket No. DHS-2012-0042] Broad Stakeholder Survey AGENCY: National Protection...soliciting comments concerning the Broad Stakeholder Survey. DATES: Comments are encouraged...responders across the Nation. The Broad Stakeholder Survey is designed to gather...

2012-08-20

389

78 FR 20119 - Broad Stakeholder Survey  

Federal Register 2010, 2011, 2012, 2013

...Docket No. DHS-2012-0042] Broad Stakeholder Survey AGENCY: National Protection...soliciting comments concerning the Broad Stakeholder Survey. DHS previously published this...responders across the Nation. The Broad Stakeholder Survey is designed to gather...

2013-04-03

390

76 FR 34087 - Broad Stakeholder Survey  

Federal Register 2010, 2011, 2012, 2013

...Docket No. DHS-2011-0027] Broad Stakeholder Survey AGENCY: National Protection...soliciting comments concerning the Broad Stakeholder Survey. DATES: Comments are encouraged...responders across the Nation. The Broad Stakeholder Survey is designed to gather...

2011-06-10

391

Back to the basics: Maximizing the information obtained by quantitative two dimensional gel electrophoresis analyses by an appropriate experimental design and statistical analyses.  

PubMed

Two dimensional gel electrophoresis has been one of the techniques most used for protein separation in proteomics experiments and still continues to be so for some species such as plants. Despite the constant technical advances and continuous improvements in the field of 2-DE, the experimental design and analysis of protein abundance data continue to be ignored or not properly documented in the literature. An appropriate experimental design, followed by decisive statistical methods is mandatory to extract all the information that is concealed in the complexity of 2-DE data. In this work we review, in a biologist's language, all the experimental design and statistical tests to be considered while planning a 2-DE based proteomics experiment and for the correct analysis and interpretation of the data. We aim to provide the researcher with an up to date introduction to these areas, starting with the experimental design and ending with the application of multivariate statistical methodologies such as PCA, ICA or neural network-based self-organizing maps. In between we have described, in an understandable way, the current methodologies available to deal with all the stages of the experimental design, data processing and analysis. PMID:20656082

Valledor, Luis; Jorrín, Jesús

2010-07-23

392

Tutorial on Technology Transfer and Survey Design and Data Collection for Measuring Internet and Intranet Existence, Usage, and Impact (Survey2000) in Acute Care Hospitals in the United States  

Microsoft Academic Search

This paper provides a tutorial of technology transfer for management information systems in health care. Additionally it describes the process for a national survey of acute care hospitals using a random sample of 813 hospitals. The purpose of the survey was to measure the levels of Internet and Intranet existence and usage in acute care hospitals. The depth of the

Myron Hatcher

2001-01-01

393

Fundamentals of quantitative research  

Microsoft Academic Search

The main purpose of this article is to introduce some important fundamental concepts of quantitative research to readers especially novice researchers. It comprises types of research, definitions of quantitative research, different types and assumptions of quantitative research, when to use and not to use quantitative methods, advantages, common approaches and samples of quantitative research, and common misconceptions. Besides, a set

Suphat Sukamolson

394

The Personal Health Survey  

ERIC Educational Resources Information Center

|The Personal Health Survey (PHS) is a 200-item inventory designed to sample symptomatology as subjective experiences from the 12 principal domains of organ system and psychophysiological functioning. This study investigates the factorial validity of the empirically constructed scales. (Author)|

Thorne, Frederick C.

1978-01-01

395

Quantitative impurity analysis of monoclonal antibody size heterogeneity by CE-LIF: example of development and validation through a quality-by-design framework.  

PubMed

This paper describes the framework of quality by design applied to the development, optimization and validation of a sensitive capillary electrophoresis-sodium dodecyl sulfate (CE-SDS) assay for monitoring impurities that potentially impact drug efficacy or patient safety produced in the manufacture of therapeutic MAb products. Drug substance or drug product samples are derivatized with fluorogenic 3-(2-furoyl)quinoline-2-carboxaldehyde and nucleophilic cyanide before separation by CE-SDS coupled to LIF detection. Three design-of-experiments enabled critical labeling parameters to meet method requirements for detecting minor impurities while building precision and robustness into the assay during development. The screening design predicted optimal conditions to control labeling artifacts while two full factorial designs demonstrated method robustness through control of temperature and cyanide parameters within the normal operating range. Subsequent validation according to the guidelines of the International Committee of Harmonization showed the CE-SDS/LIF assay was specific, accurate, and precise (RSD ? 0.8%) for relative peak distribution and linear (R > 0.997) between the range of 0.5-1.5 mg/mL with LOD and LOQ of 10 ng/mL and 35 ng/mL, respectively. Validation confirmed the system suitability criteria used as a level of control to ensure reliable method performance. PMID:22430180

Michels, David A; Parker, Monica; Salas-Solano, Oscar

2012-03-19

396

Study Quality in SLA: A Cumulative and Developmental Assessment of Designs, Analyses, Reporting Practices, and Outcomes in Quantitative L2 Research  

ERIC Educational Resources Information Center

|I began this study with two assumptions. Assumption 1: Study quality matters. If the means by which researchers design, carry out, and report on their studies lack in rigor or transparency, theory and practice are likely to be misguided or at least decelerated. Assumption 2 is an implication of Assumption 1: Quality should be measured rather than…

Plonsky, Luke

2011-01-01

397

Design and quantitative resolution measurements of an optical virtual sectioning three-dimensional imaging technique for biomedical specimens, featuring two-micrometer slicing resolution.  

PubMed

Several well-established techniques are available to obtain 3-D image information of biomedical specimens, each with their specific advantages and limitations. Orthogonal plane fluorescence optical sectioning (OPFOS), or selective plane illumination microscopy (SPIM), are additional techniques which, after adequate specimen preparation, produce high quality, autoaligned sectional images in nearly real time, of bone as well as soft tissue. Up until now, slicing resolutions down to 14 microm have been obtained. We present a high resolution (HR) OPFOS method, which delivers images that approach the quality of histological sections. With our HROPFOS technique, we achieve in-plane resolutions of 1 microm and a slicing resolution of 2 microm. A region of interest within an intact and much larger object can be imaged without problems, and as the optical technique is nondestructive, the object can be measured in any slicing direction. We present quantitative measurements of resolution. A 3-D model reconstructed from our HROPFOS data is compared to SEM results, and the technique is demonstrated with section images and 3-D reconstructions of middle ear specimens. PMID:17343514

Buytaert, Jan A N; Dirckx, Joris J J

398

A Randomized Response Technique for Quantitative Data under Unequal Probability Sampling  

Microsoft Academic Search

Warner's (1965) randomized response (RR) model and its various modifications are not applicable to surveys involving quantitative response to a sensitive question. Eichhorn and Hayre (1983) proposed an RR technique for surveys in which answer to sensitive questions result in quantitative response variables. Chaudhuri (1987) proposed a procedure for estimating the mean of a sensitive quantitative variable under a general

Amitava Saha

2008-01-01

399

Repeatability and validation of a short, semi-quantitative food frequency questionnaire designed for older adults living in Mediterranean areas: the MEDIS-FFQ.  

PubMed

The aim of the present work was to evaluate the repeatability and the validity of a short food frequency questionnaire (FFQ) that could be used for older people living in Mediterranean areas. The semi-quantitative FFQ included questions regarding the frequency of consumption of the main food groups and beverages typically consumed in the Mediterranean areas as well as some questions regarding eating habits of older persons. During 2006-2007, for the repeatability assessment (within 10-30 days), 150 individuals (51 +/- 17 yrs, 40% males) were studied, while another 190 individuals (74 +/- 9 yrs, 52% males) were enrolled for the validation purposes. Agreement of the FFQ with the 3-day food records was evaluated using the Bland-Altman method and the Kendall's tau-b coefficient. Repeatability was tested using the Cohen's kappa coefficient. Between 3-day food records and the FFQ, good agreement for alcohol (tau-b = 0.64, p < 0.001) was found, while moderate agreement for food and beverage groups of greens (tau-b = 0.32, p < 0.001), fruits (tau-b = 0.35, p < 0.001), cereals (tau-b = 0.61, p < 0.001), sweets (tau-b = 0.51, p < 0.001), and coffee (tau-b = 0.58, p < 0.001) was observed. Low, but still significant, agreement for fish (tau-b = 0.21, p = 0.001), legumes (tau-b = 0.23, p < 0.001), vegetables (tau-b = 0.23, p < 0.001), pasta (tau-b = 0.25, p < 0.001), potatoes (tau-b = 0.17, p = 0.006) and meat consumption (tau-b = 0.14, p < 0.001) were also found. The FFQ was also valid regarding the estimation of macronutrients and energy intake. Sensitivity analyses by sex, age category ( 75 yrs), and education status showed similar validity of the FFQ in each subgroup, except for elders older than 75 years. The repeatability of the FFQ was fair in all foods tested (Cohen's kappa coefficients varied between 0.15-0.39, p-values < 0.05). The suggested FFQ seems to be a reasonably valid and repeatable measure of dietary intake and can be used in older persons living in the Mediterranean areas. PMID:20711925

Tyrovolas, Stefanos; Pounis, George; Bountziouka, Vassiliki; Polychronopoulos, Evangelos; Panagiotakos, Demosthenes B

2010-07-01

400

A Dublin schools smoking survey  

Microsoft Academic Search

Summary  In this paper the results of a survey of 4,500 boys and girls aged 11-18 years in Dublin city and county are analysed. The\\u000a survey was designed to elicit information on smoking habits. The survey population covered Secondary, Secondary tops and Vocational\\u000a Schools-the intermediate and leaving certificate cycles.

Angus O’rourke; Noelie O’sullivan; Keith Wilson-Davis

1922-01-01

401

NATIONAL MORTALITY FOLLOWBACK SURVEY (NMFS)  

EPA Science Inventory

The 1993 National Mortality Followback Survey (NMFS) is the latest in a series of periodic surveys designed to supplement information routinely collected on the death certificate. The Mortality Followback Survey Program, begun in the 1960's by the National Center for Health Stati...

402

New Student Survey, Fall 1998.  

ERIC Educational Resources Information Center

|The Fall 1998 annual survey of new Johnson County Community College (JCCC) students was designed to determine new students' educational objectives and what factors influence new students' decisions to attend JCCC. Surveys mailed to 3874 students identified by the Admissions Office resulted in 713 usable returned surveys. This evaluation reports…

Weglarz, Shirley

403

Vital and Health Statistics Series 1, Number 51, May 2010. Design and Operation of the National Survey of Adoptive Parents of Children with Special Health Care Needs, 2008.  

National Technical Information Service (NTIS)

This report presents the development, plan, and operation of the National Survey of Adoptive Parents of Children with Special Health Care Needs (NSAP-SN), a module of the State and Local Area Integrated Telephone Survey conducted by the Centers for Diseas...

A. M. Frasier B. J. Skalland E. B. Foster H. M. Morrison J. Satorius K. L. Nysse-Carris K. S. Brooks M. D. Bramlett S. R. Chowdhury

2010-01-01

404

Strategic Survey Framework for the Northwest Forest Plan Survey and Manage Program.  

National Technical Information Service (NTIS)

This document outlines an iterative process for assessing the information needs for all Northwest Forest Plan (NWFP) survey and manage species, designing and implementing strategic surveys (including field surveys and other information-gathering processes...

R. Molina D. McKenzie R. Lesher J. Ford J. Alegria R. Cutler

2003-01-01

405

Design of multiplex calibrant plasmids, their use in GMO detection and the limit of their applicability for quantitative purposes owing to competition effects.  

PubMed

Five double-target multiplex plasmids to be used as calibrants for GMO quantification were constructed. They were composed of two modified targets associated in tandem in the same plasmid: (1) a part of the soybean lectin gene and (2) a part of the transgenic construction of the GTS40-3-2 event. Modifications were performed in such a way that each target could be amplified with the same primers as those for the original target from which they were derived but such that each was specifically detected with an appropriate probe. Sequence modifications were done to keep the parameters of the new target as similar as possible to those of its original sequence. The plasmids were designed to be used either in separate reactions or in multiplex reactions. Evidence is given that with each of the five different plasmids used in separate wells as a calibrant for a different copy number, a calibration curve can be built. When the targets were amplified together (in multiplex) and at different concentrations inside the same well, the calibration curves showed that there was a competition effect between the targets and this limits the range of copy numbers for calibration over a maximum of 2 orders of magnitude. Another possible application of multiplex plasmids is discussed. PMID:20099062

Debode, Frédéric; Marien, Aline; Janssen, Eric; Berben, Gilbert

2010-01-23

406

Diabetes MILES - The Netherlands: rationale, design and sample characteristics of a national survey examining the psychosocial aspects of living with diabetes in Dutch adults  

PubMed Central

Background As the number of people with diabetes is increasing rapidly worldwide, a more thorough understanding of the psychosocial aspects of living with this condition has become an important health care priority. While our knowledge has grown substantially over the past two decades with respect to the physical, emotional and social difficulties that people with diabetes may encounter, many important issues remain to be elucidated. Under the umbrella of the Diabetes MILES (Management and Impact for Long-term Empowerment and Success) Study International Collaborative, Diabetes MILES – The Netherlands aims to examine how Dutch adults with diabetes manage their condition and how it affects their lives. Topics of special interest in Diabetes MILES - The Netherlands include subtypes of depression, Type D personality, mindfulness, sleep and sexual functioning. Methods/design Diabetes MILES – The Netherlands was designed as a national online observational study among adults with diabetes. In addition to a main set of self-report measures, the survey consisted of five complementary modules to which participants were allocated randomly. From September to October 2011, a total of 3,960 individuals with diabetes (40% type 1, 53% type 2) completed the battery of questionnaires covering a broad range of topics, including general health, self-management, emotional well-being and contact with health care providers. People with self-reported type 1 diabetes (specifically those on insulin pump therapy) were over-represented, as were those using insulin among respondents with self-reported type 2 diabetes. People from ethnic minorities were under-represented. The sex distribution was fairly equal in the total sample, participants spanned a broad age range (19–90 years), and diabetes duration ranged from recent diagnosis to living with the condition for over fifty years. Discussion The Diabetes MILES Study enables detailed investigation of the psychosocial aspects of living with diabetes and an opportunity to put these findings in an international context. With several papers planned resulting from a pooled Australian-Dutch dataset and data collections planned in other countries, the Diabetes MILES Study International Collaborative will contribute substantially to identifying potentially unmet needs of those living with diabetes and to inform clinical research and care across the globe.

2012-01-01

407

The Survey Questionnaire  

ERIC Educational Resources Information Center

|Internet-based surveys are still relatively new, and researchers are just beginning to articulate best practices for questionnaire design. Online questionnaire design has generally been guided by the principles applying to other self-administered instruments, such as paper-based questionnaires. Web-based questionnaires, however, have the…

Ritter, Lois A. Ed.; Sue, Valerie M., Ed.

2007-01-01

408

Development and standardization of multiplexed antibody microarrays for use in quantitative proteomics  

PubMed Central

Background Quantitative proteomics is an emerging field that encompasses multiplexed measurement of many known proteins in groups of experimental samples in order to identify differences between groups. Antibody arrays are a novel technology that is increasingly being used for quantitative proteomics studies due to highly multiplexed content, scalability, matrix flexibility and economy of sample consumption. Key applications of antibody arrays in quantitative proteomics studies are identification of novel diagnostic assays, biomarker discovery in trials of new drugs, and validation of qualitative proteomics discoveries. These applications require performance benchmarking, standardization and specification. Results Six dual-antibody, sandwich immunoassay arrays that measure 170 serum or plasma proteins were developed and experimental procedures refined in more than thirty quantitative proteomics studies. This report provides detailed information and specification for manufacture, qualification, assay automation, performance, assay validation and data processing for antibody arrays in large scale quantitative proteomics studies. Conclusion The present report describes development of first generation standards for antibody arrays in quantitative proteomics. Specifically, it describes the requirements of a comprehensive validation program to identify and minimize antibody cross reaction under highly multiplexed conditions; provides the rationale for the application of standardized statistical approaches to manage the data output of highly replicated assays; defines design requirements for controls to normalize sample replicate measurements; emphasizes the importance of stringent quality control testing of reagents and antibody microarrays; recommends the use of real-time monitors to evaluate sensitivity, dynamic range and platform precision; and presents survey procedures to reveal the significance of biomarker findings.

Perlee, LT; Christiansen, J; Dondero, R; Grimwade, B; Lejnine, S; Mullenix, M; Shao, W; Sorette, M; Tchernev, VT; Patel, DD; Kingsmore, SF

2004-01-01

409

Travelling home for treatment and EU patients’ rights to care abroad: Results of a survey among German students at Maastricht University  

Microsoft Academic Search

Empirical evidence on patient mobility in Europe is lacking despite widespread legal, policy and media attention which the phenomenon attracts. This paper presents quantitative data on the health care seeking behaviour of German students at Maastricht University in the Netherlands. A cross-sectional survey design was applied with a mixed-methods approach including open and closed questions. Questionnaire items were based on

Irene A. Glinos; Nora Doering; Hans Maarse

2012-01-01

410

The mental health module (BELLA study) within the German Health Interview and Examination Survey of Children and Adolescents (KiGGS): study design and methods  

Microsoft Academic Search

The BELLA study on mental health and well-being in children and adolescents is the mental health module of the German Health\\u000a Interview and Examination Survey for Children and Adolescents (KiGGS). The cross-sectional KiGGS survey collected comprehensive\\u000a data on the health status of 17,641 children and adolescents, aged 0–17 years, living in Germany. The survey included physical\\u000a examinations and tests, questionnaires filled

Ulrike Ravens-Sieberer; Bärbel-Maria Kurth

2008-01-01

411

Wealth Trasfer Taxation: A Survey  

Microsoft Academic Search

The purpose of this paper is to survey the theoretical literature on wealth transfer taxation. The focus is normative: we are looking at the design of an optimal tax structure from the standpoint of both equity and efficiency. The gist of this survey is that the optimal design closely depends on the assumed bequest motives. Alternative bequest motives are thus

Helmuth Cremer; Pierre Pestieau

2004-01-01

412

"Suntelligence" Survey  

MedlinePLUS

... the American Academy of Dermatology's "Suntelligence" sun-smart survey. Please answer the following questions to measure your ... how you incorporate it into your life. The survey will take 5 to 7 minutes to complete. ...

413

Quantitative models for reverse logistics: A review  

Microsoft Academic Search

This article surveys the recently emerged field of reverse logistics. The management of return flows induced by the various forms of reuse of products and materials in industrial production processes has received growing attention throughout this decade. Many authors have proposed quantitative models taking those changes in the logistics environment into account. However, no general framework has been suggested yet.

Moritz Fleischmann; Jacqueline M. Bloemhof-Ruwaard; Rommert Dekker; Erwin van der Laan; Jo A. E. E. van Nunen; Luk N. Van Wassenhove

1997-01-01

414

GUIDELINES FOR ZOOPLANKTON SAMPLING IN QUANTITATIVE BASELINE AND MONITORING PROGRAMS  

EPA Science Inventory

Methods applicable to zooplankton sampling and analysis in quantitative baseline and monitoring surveys are evaluated and summarized. Specific recommendations by managers must take into account characteristics of the water mass under investigation, the abundance of contained zoop...

415

Militarism and Foreign Conflict Behavior: A Quantitative Study Revisited.  

National Technical Information Service (NTIS)

Considerable information has been written about the phenomenon known as militarism; however, little or no quantitative research has been used to investigate it. This study surveyed the political, cultural and economic qualities of nations and used seven 1...

D. G. Hansen

1982-01-01

416

On the genome-wide analysis of copy number variants in family-based designs: methods for combining family-based and population-based information for testing dichotomous or quantitative traits, or completely ascertained samples.  

PubMed

We propose a new approach for the analysis of copy number variants (CNVs)for genome-wide association studies in family-based designs. Our new overall association test combines the between-family component and the within-family component of the family-based data so that the new test statistic is fully efficient and, at the same time, maintains robustness against population-admixture and stratification, like classical family-based association tests that are based only on the within-family component. Although all data are incorporated into the test statistic, an adjustment for genetic confounding is not needed, even for the between-family component. The new test statistic is valid for testing either quantitative or dichotomous phenotypes. If external CNV data are available, the approach can also be applied to completely ascertained samples. Similar to the approach by Ionita-Laza et al. ([2008]. Genet Epidemiol 32:273-284), the proposed test statistic does not require a CNV-calling algorithm and is based directly on the CNV probe intensities. We show, via simulation studies, that our methodology increases the power of the FBAT statistic to levels comparable to those of population-based designs. The advantages of the approach in practice are demonstrated by an application to a genome-wide association study for body mass index. PMID:20718041

Murphy, Amy; Won, Sungho; Rogers, Angela; Chu, Jen-Hwa; Raby, Benjamin A; Lange, Christoph

2010-09-01

417

On the genome-wide analysis of copy number variants in family-based designs: Methods for combining family-based and population based information for testing dichotomous or quantitative traits, or completely ascertained samples  

PubMed Central

We propose a new approach for the analysis of copy number variants (CNVs)for genome-wide association studies in family-based designs. Our new overall association test combines the between-family component and the within-family component of the data so that the new test statistic is fully efficient and, at the same time, achieves the complete robustness against population-admixture and stratification, as classical family-based association tests that are based only on the between-family component. Although all data are incorporated into the test statistic, an adjustment for genetic confounding is not needed, not even for the between-family component. The new test statistic is valid for testing either quantitative or dichotomous phenotypes. If external CNV data are available, the approach can also be used in completely ascertained samples. Similar to the approach by Ionita-Laza et al.(1), the proposed test statistic does not required a CNV-calling algorithm and is based directly on the CNV probe intensity data. We show, via simulation studies, that our methodology increases the power of the FBAT statistic to levels comparable to those of population-based designs. The advantages of the approach in practice are demonstrated by an application to a genome-wide association study for body mass index (BMI).

Murphy, Amy; Won, Sungho; Rogers, Angela; Chu, Jen-Hwa; Raby, Benjamin A; Lange, Christoph

2010-01-01

418

Slone Survey  

Cancer.gov

The Slone Survey, run by the Slone Epidemiology Center at Boston University, is an ongoing telephone survey of medication use in the U.S. population. The survey began in 1998 and to date over 19,500 subjects have been interviewed.

419

Biological mechanisms of disease and death in Moscow: rationale and design of the survey on Stress Aging and Health in Russia (SAHR)  

PubMed Central

Background Prior research has revealed large differences in health and mortality across countries, socioeconomic groups, and individuals. Russia experiences one of the world's highest levels of all-cause and cardiovascular mortality, great mortality differences within the population, and a heavy burden of ill health. Psychological stress has been suggested as a likely explanation of health loss and premature death in Russia and Eastern Europe. However, physiological mechanisms connecting stress with health in Russia remain unclear since existing epidemiological data are scarce and limited to conventional risk factors. Method and Design The survey on Stress Aging and Health in Russia (SAHR) is addressing this knowledge gap by collecting an unusually rich database that includes a wide range of reported information, physical and cognitive health outcomes, and biomarkers in a sample of Muscovite men and women aged 55 and older. The total planned sample size is 2,000 individuals. The sample was randomly selected from epidemiological cohorts formed in Moscow between the mid-1970s and the 1990s and from medical population registers. The baseline data collection was carried out from December 2006 to June 2009. Interviews and medical tests were administered at hospital or at home according to standardized protocol. Questionnaire information includes health, socio-demographic characteristics, economic well-being, cognitive functioning, and batteries on stress and depression. Biomarkers include anthropometry, grip strength, resting ECG, conventional cardiovascular factors of risk such as lipid profile and blood pressure, and other biochemical parameters such as those related to inflammation, glucose and insulin resistance, coagulation, fibrinolysis, and stress hormones. In addition to these measurements, SAHR includes dynamic biomarkers provided by 24-hour ECG (Holter) monitoring. This method continuously registers the beat-to-beat heart rate in naturalistic conditions without restrictions on normal daily activities. It provides information about heart functioning, including heart rate variability and ischemic and arrhythmic events. Re-examination of the study subjects will be conducted in 2009–2011 and will focus on health, functional status, economic conditions, behaviors, and attitudes towards aging. The subjects are also followed up for mortality and non-fatal health events. Discussion The SAHR will produce a valuable set of established and novel biomarkers combined with self-reported data for the international research community and will provide important insights into factors and biological mechanisms of mortality and health losses in Russia.

Shkolnikova, Maria; Shalnova, Svetlana; Shkolnikov, Vladimir M; Metelskaya, Victoria; Deev, Alexander; Andreev, Evgueni; Jdanov, Dmitri; Vaupel, James W

2009-01-01

420

Developing Geoscience Students' Quantitative Skills  

NASA Astrophysics Data System (ADS)

Sophisticated quantitative skills are an essential tool for the professional geoscientist. While students learn many of these sophisticated skills in graduate school, it is increasingly important that they have a strong grounding in quantitative geoscience as undergraduates. Faculty have developed many strong approaches to teaching these skills in a wide variety of geoscience courses. A workshop in June 2005 brought together eight faculty teaching surface processes and climate change to discuss and refine activities they use and to publish them on the Teaching Quantitative Skills in the Geosciences website (serc.Carleton.edu/quantskills) for broader use. Workshop participants in consultation with two mathematics faculty who have expertise in math education developed six review criteria to guide discussion: 1) Are the quantitative and geologic goals central and important? (e.g. problem solving, mastery of important skill, modeling, relating theory to observation); 2) Does the activity lead to better problem solving? 3) Are the quantitative skills integrated with geoscience concepts in a way that makes sense for the learning environment and supports learning both quantitative skills and geoscience? 4) Does the methodology support learning? (e.g. motivate and engage students; use multiple representations, incorporate reflection, discussion and synthesis) 5) Are the materials complete and helpful to students? 6) How well has the activity worked when used? Workshop participants found that reviewing each others activities was very productive because they thought about new ways to teach and the experience of reviewing helped them think about their own activity from a different point of view. The review criteria focused their thinking about the activity and would be equally helpful in the design of a new activity. We invite a broad international discussion of the criteria(serc.Carleton.edu/quantskills/workshop05/review.html).The Teaching activities can be found on the Teaching Quantitative Skills in the Geosciences website (serc.Carleton.edu/quantskills/). In addition to the teaching activity collection (85 activites), this site contains a variety of resources to assist faculty with the methods they use to teach quantitative skills at both the introductory and advanced levels; information about broader efforts in quantitative literacy involving other science disciplines, and a special section of resources for students who are struggling with their quantitative skills. The site is part of the Digital Library for Earth Science Education and has been developed by geoscience faculty in collaboration with mathematicians and mathematics educators with funding from the National Science Foundation.

Manduca, C. A.; Hancock, G. S.

2005-12-01

421

A quantitative evaluation of pollution effects on stream communities  

Microsoft Academic Search

1.A quantitative and qualitative biological survey was conducted on the Elkhart and St. Joseph Rivers in the vicinity of Elkhart, Indiana.2.Water quality tests were inconclusive as to the effects of periodic industrial waste discharge on the receiving stream.3.A quantitative biological method, the coefficient of similarity, demonstrated the effect of industrial wastes upon the stream communities.

John Mark Dean; Roy F. Burlington

1963-01-01

422

Terminating Sequential Delphi Survey Data Collection  

ERIC Educational Resources Information Center

The Delphi survey technique is an iterative mail or electronic (e-mail or web-based) survey method used to obtain agreement or consensus among a group of experts in a specific field on a particular issue through a well-designed and systematic multiple sequential rounds of survey administrations. Each of the multiple rounds of the Delphi survey

Kalaian, Sema A.; Kasim, Rafa M.

2012-01-01

423

Quantitative Resilience Analysis Through Control Design.  

National Technical Information Service (NTIS)

Critical infrastructure resilience has become a national priority for the U. S. Department of Homeland Security. System resilience has been studied for several decades in many different disciplines, but no standards or unifying methods exist for critical ...

D. Sunderland E. D. Vugrin R. C. Camphouse

2009-01-01

424

Optimal Survey Designs for Targeting Chemotherapy Against Soil-Transmitted Helminths: Effect of Spatial Heterogeneity and Cost-Efficiency of Sampling  

PubMed Central

Implementation of helminth control programs requires information on the distribution and prevalence of infection to target mass treatment to areas of greatest need. In the absence of data, the question of how many schools/communities should be surveyed depends on the spatial heterogeneity of infection and the cost efficiency of surveys. We used geostatistical techniques to quantify the spatial heterogeneity of soil-transmitted helminths in multiple settings in eastern Africa, and using the example of Kenya, conducted conditional simulation to explore the implications of alternative sampling strategies in identifying districts requiring mass treatment. Cost analysis is included in the simulations using data from actual field surveys and control programs. The analysis suggests that sampling four or five schools in each district provides a cost-efficient strategy in identifying districts requiring mass treatment, and that efficiency of sampling was relatively insensitive to the number of children sampled per school.

Sturrock, Hugh J. W.; Gething, Peter W.; Clements, Archie C. A.; Brooker, Simon

2010-01-01

425

Quantitative analysis of 'calanchi  

NASA Astrophysics Data System (ADS)

Three years (2006 - 2009) of monitoring data from two calanchi sites located in the western Sicilian Appennines are analyzed and discussed: the data comes from two networks of erosion pins and a rainfall gauge station. The aim of the present research is to quantitatively analyze the effects of erosion by water and to investigate their relationships with rainfall trends and specific properties of the two calanchi fronts. Each of the sites was equipped with a grid of randomly distributed erosion pins, made of 41 nodes for the "Catalfimo" site, and 13 nodes for the "Ottosalme" site (in light of the general homogeneity of its geomorphologic conditions); the erosion pins consist in 2 cm graded iron stakes, 100 cm long, with a section having a diameter of 1.6 cm. Repeated readings at the erosion pins allowed to estimate point topographic height variations; a total number of 21 surveys have been made remotely by acquiring high resolution photographs from a fixed view point. Since the two calanchi sites are very close each other (some hundred meters), a single rainfall gauge station was installed, assuming a strict climatic homogeneity of the investigated area. Rainfall data have been processed to derive the rain erosivity index signal, detecting a total number of 27 erosive events. Despite the close distance between the two sites, because of a different geologic setting, the calanchi fronts are characterized by the outcropping of different levels of the same formation (Terravecchia fm., Middle-Late Miocene); as a consequence, both mineralogical, textural and geotechnical (index) properties, as well as the topographic and geomorphologic characteristics, change. Therefore, in order to define the "framework" in which the two erosion pin grids have been installed, 40 samples of rock have been analyzed, and a geomorphologic detailed survey has been carried out; in particular, plasticity index, liquid limit, carbonate, pH, granulometric fractions and their mineralogic properties, electrical conductivity and sodium adsorption ratio (SAR), have been characterized. The analysis of the data allows to define relationships between the response of each erosion pin and the erosive rainfall events, the micro-hydrologic of its position and lithotechnical properties of the outcropping rocks. The estimations of the mean annual erosion rate and of the erosivity index, as well as results of the terrain analysis, largely agree with available data from literature observed in similar sites affected by calanchi development. Moreover, the gained results well reflect the differences of the morphologic features and their distribution on the two calanchi fronts; of particular interest is the spatial distribution and variability of piping landforms that markedly influence the development of gullies, specially on "Catalfimo" site, where a high frequency of pipes of different typologies can be detected.

Agnesi, Valerio; Cappadonia, Chiara; Conoscenti, Christian; Costanzo, Dario; Rotigliano, Edoardo

2010-05-01

426

Quantitative trait loci in Drosophila  

Microsoft Academic Search

Phenotypic variation for quantitative traits results from the simultaneous segregation of alleles at multiple quantitative trait loci. Understanding the genetic architecture of quantitative traits begins with mapping quantitative trait loci to broad genomic regions and ends with the molecular definition of quantitative trait loci alleles. This has been accomplished for some quantitative trait loci in Drosophila. Drosophila quantitative trait loci

Trudy F. C. Mackay

2001-01-01

427

Quantitative methods in nursing research.  

PubMed

This paper considers some of the general principles that are common to much of quantitative research in nursing. In particular, the role of hypothesis testing is considered, and the use of estimation is emphasized. Confidence intervals are advocated as a means of assessing both statistical and clinical significance. These principles and methods are illustrated using examples taken from the nursing literature. Finally, more complicated situations and the role of design are discussed. PMID:8732530

Abrams, K R; Scragg, A M

1996-05-01

428

Design, synthesis, and analysis of the quantitative structure-activity relationships of 4-phenyl-acyl-substituted 3-(2,5-dimethylphenyl)-4-hydroxy-1-azaspiro[4.5]dec-3-ene-2,8-dione derivatives.  

PubMed

A series of 4-phenyl-acyl-substituted 3-(2,5-dimethylphenyl)-4-hydroxy-1-azaspiro[4.5]dec-3-ene-2,8-dione derivatives were designed and synthesized, and their structures were characterized using (1)H NMR (or (13)C NMR), mass spectrometry, and elemental analysis. The bioactivities of the new compounds were evaluated. These compounds exhibited good inhibition activities against bean aphids (Aphis fabae) and carmine spider mite (Tetranychus cinnabarinus), and 4-phenyl acyl esters showed stronger bioactivity than 4-arylesterases and alkyl esters. The results showed that compound 8-I-e, which contains a para-methoxy group on the phenyl acyl, and compound 8-I-m, which contains a para-trifluoromethyl group on the phenyl acyl, displayed potent insecticidal activity against A. fabae and T. cinnabarinus respectively. The insecticidal activity showed a clear structure-activity relationship, confirming the importance of the flexible bridge. The DFT/B3LYP/6-31(d) level method was used to calculate molecular geometries and electronic descriptors. These factors included total energy, charge distribution, and the linear orbital level of the title compounds. Quantitative structure-activity relationship studies were performed on these compounds using quantum-chemical and physicochemical parameters as independent variables and insecticidal activity as a dependent variable. Insecticidal activity was most closely correlated (r > 0.8) with quantum chemical and physicochemical parameters. PMID:22531003

Zhao, Jinhao; Zhang, Jiangong; Xu, Bingrong; Wang, Zongcheng; Cheng, Jingli; Zhu, Guonian

2012-05-03

429

KE Basin underwater visual fuel survey  

SciTech Connect

Results of an underwater video fuel survey in KE Basin using a high resolution camera system are presented. Quantitative and qualitative information on fuel degradation are given, and estimates of the total fraction of ruptured fuel elements are provided. Representative photographic illustrations showing the range of fuel conditions observed in the survey are included.

Pitner, A.L.

1995-02-01

430

NON-ENERGY BENEFITS INCLUDING PRODUCTIVITY, LIABILITY, TENANT SATISFACTION, AND OTHERS - WHAT PARTICIPANT SURVEYS TELL US ABOUT DESIGNING AND MARKETING COMMERCIAL PROGRAMS  

Microsoft Academic Search

Using detailed interviews and data on 130 commercial program participants we explored resource efficiency program benefits beyond bill or energy savings. As one component of the evaluation of a commercial audit program, we augmented the survey discussions of barriers, budgets, and program participation decisions. We also gathered detailed information on the array of benefits participants recognized from the program. Respondents

Dennis Pearson

431

Seismic Survey  

USGS Multimedia Gallery

USGS hydrologists conduct a seismic survey in New Orleans, Louisiana. The survey was one of several geophysical methods used during USGS applied research on the utility of the multi-channel analysis of surface waves (MASW) seismic method (no pictured here) for non-invasive assessment of earthen leve...

2009-05-01

432

Electromagnetic Survey  

USGS Multimedia Gallery

USGS hydrologist conducts a broadband electromagnetic survey in New Orleans, Louisiana. The survey was one of several geophysical methods used during USGS applied research on the utility of the multi-channel analysis of surface waves (MASW) seismic method for non-invasive assessment of earthen levee...

2009-05-01

433

Physicians' Practice Costs and Income Survey.  

National Technical Information Service (NTIS)

Income Survey (PPCIS): US, CY 1983-1985. The report includes an executive summary, and detailed explanation of the survey objectives, nonresponse bias, data collection, questionnaire design, data preparation and data processing. In addition, selective ana...

S. Sprachman M. C. Burich M. Rosenbach J. Cromwell B. Spencer

1985-01-01

434

Academic Research Equipment in the Physical and Computer Sciences and Engineering. An Analysis of Findings from Phase I of the National Science Foundation's National Survey of Academic Research Instruments and Instrumentation Needs.  

ERIC Educational Resources Information Center

|This report presents information from phase I of a survey designed to develop quantitative indicators of the current national stock, cost/investment, condition, obsolescence, utilization, and need for major research instruments in academic settings. Data for phase I (which focused on the physical and computer sciences and engineering) were…

Burgdorf, Kenneth; White, Kristine

435

The Quantitative Study of National CharacterInterchronological and International Perspectives  

Microsoft Academic Search

The fundamental concepts and methodologies of the quantitative study of national character are described with heuristic examples. The two major foundations of the quantitative study of national character are its interchronological and international comparative aspects, whose associated research methods are quite different. In the former case, time-series surveys are indispensable. Various problems concerning these surveys are discussed. In the latter

Chikio Hayashi

1998-01-01

436

AzTEC COSMOS Survey  

NASA Astrophysics Data System (ADS)

The Cosmic Evolution Survey (COSMOS) is a 2 square degree HST/ACS survey specifically designed to probe galaxy evolution as a function of time and environment (PI: N. Scoville). In addition to the extensive HST data, the COSMOS team has acquired deep multi-wavelength data from radio to X-ray (VLA, Spitzer, NOAO, CFHT, Subaru, Galex, Chandra, XMM). Spectroscopic surveys are currently under way using Magellan, Kecks, and VLT, and an extensive photometric redshift database is also being assembled. Future surveys using major new instruments such as Herschel are also being planned. To take advantage of these rich complementary databases, we have undertaken a 1100 micron imaging survey of a 30' x 30' field centered just north of the earlier mm/submm surveys by the Bolocam on CSO and MAMBO on the 30-m telescope, with a small overlap. We will present some of the preliminary results from the survey.

Yun, Min Su; Ade, P. A.; Aretxaga, I.; Austermann, J.; Bock, J. J.; Hughes, D.; Kang, Y.; Kim, S.; Lowenthal, J.; Mauskopf, P.; Scott, K.; Wilson, G.

2006-12-01

437

National Health Survey  

NSDL National Science Digital Library

The survey was designed to obtain national benchmarks on a wide range of health issues, and to enable changes in health to be monitored over time. Information was collected about: the health status of the population; health-related aspects of lifestyle and other health risk factors; and the use of health services and other actions people had recently taken for their health."

Statistics, Australian B.

438

Survey of Solar Buildings.  

ERIC Educational Resources Information Center

|This survey brings together information concerning the growing number of buildings utilizing solar energy and is designed to facilitate the comparison of specific characteristics of the buildings. The 66 U.S. entries are divided into five regions, arranged by state, and roughly by date within each state. Seven entries are from other countries. A…

Gray, Robert; Baker, Steven

439

Survey of Solar Buildings.  

ERIC Educational Resources Information Center

This survey brings together information concerning the growing number of buildings utilizing solar energy and is designed to facilitate the comparison of specific characteristics of the buildings. The 66 U.S. entries are divided into five regions, arranged by state, and roughly by date within each state. Seven entries are from other countries. A…

Gray, Robert; Baker, Steven

440

MARYLAND BIOLOGICAL STREAM SURVEY  

EPA Science Inventory

The Maryland Biological Stream Survey (MBSS) is a multi-year probability-based sampling program designed to assess the status of biological resources in non-tidal streams of Maryland. The MBSS is quantifying the extent to which acidic deposition and other human activities have af...

441

Sky Surveys  

NASA Astrophysics Data System (ADS)

Sky surveys represent a fundamental data basis for astronomy. We usethem to map in a systematic way the universe and its constituents andto discover new types of objects or phenomena. We review the subject,with an emphasis on the wide-field, imaging surveys, placing them ina broader scientific and historical context. Surveys are now the largestdata generators in astronomy, propelled by the advances in informationand computation technology, and have transformed the ways in whichastronomy is done. This trend is bound to continue, especially with thenew generation of synoptic sky surveys that cover wide areas of the skyrepeatedly and open a new time domain of discovery. We describe thevariety and the general properties of surveys, illustrated by a number ofexamples, the ways in which they may be quantified and compared, andoffer some figures of merit that can be used to compare their scientificdiscovery potential. Surveys enable a very wide range of science, and that isperhaps their key unifying characteristic. As new domains of the observableparameter space open up thanks to the advances in technology, surveys areoften the initial step in their exploration. Some science can be done withthe survey data alone (or a combination of data from different surveys),and some require a targeted follow-up of potentially interesting sourcesselected from surveys. Surveys can be used to generate large, statisticalsamples of objects that can be studied as populations or as tracers of largerstructures to which they belong. They can be also used to discover orgenerate samples of rare or unusual objects and may lead to discoveriesof some previously unknown types. We discuss a general framework ofparameter spaces that can be used for an assessment and comparison ofdifferent surveys and the strategies for their scientific exploration. As we aremoving into the Petascale regime and beyond, an effective processing andscientific exploitation of such large data sets and data streams pose manychallenges, some of which are specific to any given survey and some ofwhich may be addressed in the framework of Virtual Observatory andAstroinformatics. The exponential growth of data volumes and complexity makesa broader application of data mining and knowledge discovery technologiescritical in order to take a full advantage of this wealth of information.Finally, we discuss some outstanding challenges and prospects for thefuture.

Djorgovski, S. George; Mahabal, Ashish; Drake, Andrew; Graham, Matthew; Donalek, Ciro

442

Internet dating: a British survey  

Microsoft Academic Search

Purpose – An online survey was carried out with the purpose of finding out the extent to which internet users subscribe to online dating services. The paper aims to assess users' experiences of such services and their eventual outcomes. Design\\/methodology\\/approach – Data were obtained through a self-completion online questionnaire survey posted on the website of a leading internet research agency,

Barrie Gunter

2008-01-01

443

Assimilation and Language. Survey Brief  

ERIC Educational Resources Information Center

The Pew Hispanic Center/Kaiser Family Foundation 2002 National Survey of Latinos explored the attitudes and experiences of Latinos on a wide variety of topics. The survey sample was designed to include enough Hispanics from various backgrounds and national origin groups so that in addition to describing Latinos overall, comparisons also could be…

Pew Hispanic Center, 2004

2004-01-01

444

Kearney State College Library Survey.  

National Technical Information Service (NTIS)

The methodology and survey instrument described in this report were designed to support the Library Learning Program for freshmen English students and identify the clientele of the library at Kearney State College in Nebraska. Surveys were mailed to on-ca...

A. C. Hawbaker

1976-01-01

445

Student Climate Survey, Spring 1998.  

ERIC Educational Resources Information Center

Every three years, Truckee Meadows Community College (Nevada) administers a student climate survey that measures the attitudes, perceptions, and opinions of its student population. The instrument used to survey the student body was designed with three basic objectives in mind: (1) validate the institutional mission; (2) obtain input regarding the…

Truckee Meadows Community Coll., Sparks, NV.

446

The Large Synoptic Survey Telescope  

Microsoft Academic Search

The Large Synoptic Survey Telescope (LSST) is currently by far the most ambitious proposed ground-based optical survey. With initial funding from the US National Science Foundation (NSF), Department of Energy (DOE) laboratories and private sponsors, the design and development efforts are well underway at many institutions, including top universities and leading national laboratories. The main science themes that drive the

Zeljko Ivezic

2007-01-01

447

Student Climate Survey, Spring 1998.  

ERIC Educational Resources Information Center

|Every three years, Truckee Meadows Community College (Nevada) administers a student climate survey that measures the attitudes, perceptions, and opinions of its student population. The instrument used to survey the student body was designed with three basic objectives in mind: (1) validate the institutional mission; (2) obtain input regarding the…

Truckee Meadows Community Coll., Sparks, NV.

448

A Survey Course in Catalysis.  

ERIC Educational Resources Information Center

Describes a 10-week survey course in catalysis for chemical engineering and chemistry students designed to show how modern chemistry and chemical engineering interact in the ongoing development of industrial catalysts. Includes course outline and instructional strategies. (Author/JN)

Skaates, J. M.

1982-01-01

449

Response Rates in Organizational Science, 1995–2008: A Meta-analytic Review and Guidelines for Survey Researchers  

Microsoft Academic Search

Purpose  This study expands upon existing knowledge of response rates by conducting a large-scale quantitative review of published\\u000a response rates. This allowed a fine-grained comparison of response rates across respondent groups. Other unique features of\\u000a this study are the analysis of response enhancing techniques across respondent groups and response rate trends over time.\\u000a In order to aid researchers in designing surveys,

Frederik Anseel; Filip Lievens; Eveline Schollaert; Beata Choragwicka

2010-01-01

450

New Survey Methodologies in Researching Violence Against Women  

Microsoft Academic Search

This paper assesses the methodologies of the new national surveys of violence against women, including those in the US, Canada, Australia, Finland and the Netherlands, as well as the British Crime Survey. The development of large-scale quantitative survey methodology so as to be suitable for such a sensitive subject has involved many innovations. The paper concludes with recommendations for further

SYLVIA WALBY; ANDREW MYHILL

2001-01-01

451

Surveying System  

NASA Astrophysics Data System (ADS)

Sunrise Geodetic Surveys are setting up their equipment for a town survey. Their equipment differs from conventional surveying systems that employ transit rod and chain to measure angles and distances. They are using ISTAC Inc.'s Model 2002 positioning system, which offers fast accurate surveying with exceptional signals from orbiting satellites. The special utility of the ISTAC Model 2002 is that it can provide positioning of the highest accuracy from Navstar PPS signals because it requires no knowledge of secret codes. It operates by comparing the frequency and time phase of a Navstar signal arriving at one ISTAC receiver with the reception of the same set of signals by another receiver. Data is computer processed and translated into three dimensional position data - latitude, longitude and elevation.

1988-01-01

452

A survey of National Cancer Institute-designated comprehensive cancer centers’ oral health supportive care practices and resources in the USA  

Microsoft Academic Search

Background  The oral complications and morbidity resulting from overall cancer therapy utilizing radiation, chemotherapy, and\\/or stem\\u000a cell transplantation can have significant impact on a patient’s health, quality of life, cost of care, and cancer management.\\u000a There has been minimal health services research focusing on the status of medically necessary, oral supportive services at\\u000a US cancer centers.\\u000a \\u000a \\u000a \\u000a Methods  A pre-tested, survey questionnaire was

Joel B. Epstein; Ira R. Parker; Matthew S. Epstein; Anurag Gupta; Susan Kutis; Daniela M. Witkowski

2007-01-01

453

Quantitative methods in archaeoseismology  

Microsoft Academic Search

Within the multidisciplinary field of archaeoseismology, quantitative methods have begun to be utilized more prevalently. This paper proposes a scheme of applying quantitative models to test the seismogenic hypothesis of observed damage and gives examples from field cases. The combination of 3D structural models of buildings or their remains based in part on phase shift laserscanner measurements combined with high-resolution

Klaus-G. Hinzen; Claus Fleischer; Sharon K. Reamer; Stephan Schreiber; Sven Schütte; Baris Yerli

2011-01-01

454

Quantitative Flow Visualization  

Microsoft Academic Search

Modern developments in laser and computer technology, electronic cameras, and digital image processing techniques allow to generate planar distributions of quantitative data in turbulent flows. Large amounts of data can be processed easily and analyzed statistically. With these tools, it is possible to quantitatively visualize turbulent coherent structures, even in flows of high Reynolds number, and measure characteristic spatial quantities

W. Merzkirch; D. Vitkin; W. Xiong

1998-01-01

455

Modeling Quantitative Literacy  

ERIC Educational Resources Information Center

Quantitative literacy is a habit of mind that is characterized by the interrelationship among a person's everyday understanding of mathematics, his or her beliefs about mathematics, and his or her disposition toward mathematics. To assess quantitative literacy, it is important to devise measurement tools that provide valid and reliable information…

Wilkins, Jesse L. M.

2010-01-01

456

Statistically Quantitative Volume Visualization  

Microsoft Academic Search

Visualization users are increasingly in need of techniques for assessing quantitative uncertainty and error in the im- ages produced. Statistical segmentation algorithms compute these quantitative results, yet volume rendering tools typi- cally produce only qualitative imagery via transfer function- based classification. This paper presents a visualization technique that allows users to interactively explore the un- certainty, risk, and probabilistic decision

Joe Michael Kniss; Robert L. Van Uitert Jr.; Abraham Stephens; Guo-shi Li; Tolga Tasdizen; Charles D. Hansen

2005-01-01