Evaluating the Quality of Changes in Voter Registration Databases

2019 ◽  
Vol 48 (6) ◽  
pp. 670-676
Author(s):  
Seo-young Silvia Kim ◽  
Spencer Schneider ◽  
R. Michael Alvarez
Keyword(s):  
Record Linkage ◽  
Voter Registration ◽  
Election Administration ◽  
Registration Data ◽  
Detection And Tracking ◽  
Audit Data ◽  
Using Data ◽  
Changes Over Time ◽  
Over Time

The administration of elections depends crucially upon the quality and integrity of voter registration databases. In addition, political scientists are increasingly using these databases in their research. However, these databases are dynamic and may be subject to external manipulation and unintentional errors. In this article, using data from Orange County, California, we develop two methods for evaluating the quality of voter registration data as it changes over time: (a) generating audit data by repeated record linkage across periodic snapshots of a given database and monitoring it for sudden anomalous changes and (b) identifying duplicates via an efficient, automated duplicate detection, and tracking new duplicates and deduplication efforts over time. We show that the generated data can serve not only to evaluate voter file quality and election integrity but also as a novel source of data on election administration practices.

scholarly journals Hubungan Perilaku Perdagangan Investor Dengan Volume Perdagangan Di Bursa Efek Indonesia

2009 ◽  
Vol 2 (1) ◽  
Author(s):  
Ghazali Syamni
Keyword(s):  
Trading Volume ◽  
Stock Exchange ◽  
Time Interval ◽  
Time Intervals ◽  
Using Data ◽  
Changes Over Time ◽  
Relationship Of ◽  
The Relationship ◽  
Order Pattern ◽  
Over Time

This paper examines the relationship of behavior trading investor using data detailed transaction history-corporate edition demand and order history in Indonesia Stock Exchange during period of March, April and May 2005. Peculiarly, behavior placing of investor order at trading volume. The result of this paper indicates that trading volume order pattern to have pattern U shape. The pattern happened that investors have strong desires to places order at the opening and close of compared to in trading periods. While the largest orders are of market at the opening indicates that investor is more conservatively when opening, where many orders when opening has not happened transaction to match. In placing order both of investor does similar strategy. By definition, informed investors’ orders more large than uninformed investors. If comparison of order examined hence both investors behavior relatively changes over time. But, statistically shows there is not ratio significant. This implies behavior trading of informed investors and uninformed investors stable relative over time. The result from regression analysis indicates that informed investors to correlate at trading volume in all time intervals, but not all uninformed investors correlates in every time interval. This imply investor order inform is more can explain trading volume pattern compared to uninformed investor order in Indonesia Stock Exchange. Finally, result of regression also finds that order status match has greater role determines trading volume pattern intraday especially informed buy match and informed sale match. While amend, open and withdraw unable to have role to determine intraday trading volume pattern.

Value of caregiver ratings in evaluating the quality of life of patients with cancer.

1997 ◽  
Vol 15 (3) ◽  
pp. 1206-1217 ◽  
Author(s):  
K C Sneeuw ◽  
N K Aaronson ◽  
M A Sprangers ◽  
S B Detmar ◽  
L D Wever ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Cancer Patients ◽  
Informal Caregivers ◽  
Self Report ◽  
Sources Of Information ◽  
Individual Patient Level ◽  
Populations At Risk ◽  
Changes Over Time ◽  
Over Time

PURPOSE To evaluate the usefulness of caregiver ratings of cancer patients' quality of life (QL), we examined the following: (1) the comparability of responses to a brief standardized QL questionnaire provided by patients, physicians, and informal caregivers; and (2) the relative validity of these ratings. METHODS The study sample included cancer patients receiving chemotherapy, their treating physicians, and significant others involved closely in the (informal) care of the patients. During an early phase of treatment and 3 months later, patients and caregivers completed independently the COOP/WONCA charts, covering seven QL domains. At baseline, all sources of information were available for 295 of 320 participating patients (92%). Complete follow-up data were obtained for 189 patient-caregiver triads. RESULTS Comparison of mean scores on the COOP/WONCA charts revealed close agreement between patient and caregiver ratings. At the individual patient level, exact or global agreement was observed in the majority of cases (73% to 91%). Corrected for chance agreement, moderate intraclass correlations (ICC) were noted (0.32 to 0.72). Patient, physician, and informal caregiver COOP/WONCA scores were all responsive to changes over time in specific QL domains, but differed in their relative performance. Relative to the patients, the physicians were more efficient in detecting changes over time in physical fitness and overall health, but less so in relation to social function and pain. CONCLUSION For studies among patient populations at risk of deteriorating self-report capabilities, physicians and informal caregivers can be useful as alternative or complementary sources of information on cancer patients' QL.

scholarly journals Evolution of orbit and clock quality for real-time multi-GNSS solutions

GPS Solutions ◽  
2020 ◽  
Vol 24 (4) ◽  
Author(s):  
Kamil Kazmierski ◽  
Radoslaw Zajdel ◽  
Krzysztof Sośnica
Keyword(s):  
Real Time ◽  
Atomic Clock ◽  
Orbital Plane ◽  
Poor Quality ◽  
Satellite Orbits ◽  
High Quality ◽  
Changes Over Time ◽  
Over Time ◽  
Orbit Characteristics

Abstract High-quality satellite orbits and clocks are necessary for multi-GNSS precise point positioning and timing. In undifferenced GNSS solutions, the quality of orbit and clock products significantly influences the resulting position accuracy; therefore, for precise positioning in real time, the corrections for orbits and clocks are generated and distributed to users. In this research, we assess the quality and the availability of real-time CNES orbits and clocks for GPS, GLONASS, Galileo, and BeiDou-2 separated by satellite blocks and types, as well as the product quality changes over time. We calculate the signal-in-space ranging error (SISRE) as the main orbit and clock quality indicator. Moreover, we employ independent orbit validation based on satellite laser ranging. We found that the most accurate orbits are currently available for GPS. However, Galileo utmost stable atomic clocks compensate for systematic errors in Galileo orbits. As a result, the SISRE for Galileo is lower than that for GPS, equaling 1.6 and 2.3 cm for Galileo and GPS, respectively. The GLONASS satellites, despite the high quality of their orbits, are characterized by poor quality of clocks, and together with BeiDou-2 in medium and geosynchronous inclined orbits, are characterized by SISRE of 4–6 cm. BeiDou-2 in geostationary orbits is characterized by large orbital errors and the lowest availability of real-time orbit and clock corrections due to a large number of satellite maneuvers. The quality of GNSS orbit and clock corrections changes over time and depends on satellite type, block, orbit characteristics, onboard atomic clock, and the sun elevation above the orbital plane.

Probing Vividness Increment through Imagery Interruption

2003 ◽  
Vol 23 (1) ◽  
pp. 63-78 ◽  
Author(s):  
Amedeo D'Angiulli ◽  
Adam Reeves
Keyword(s):  
Individual Differences ◽  
Visual Experience ◽  
Mental Image ◽  
Full Detail ◽  
Implicit Assumption ◽  
Generation Process ◽  
Image Generation ◽  
Changes Over Time ◽  
Over Time

The purpose of the present study was to trace how visual experience changes over time during mental image generation, by using an interruption paradigm. In one experiment, participants were asked to read the verbal descriptions of eight common objects and imagine these objects. Changes in the quality of the images evoked by the eight stimuli were probed by interrupting the visual mental image generation process at various times from 0 to 1.7 s, and asking participants to rate the vividness of their image at the time of interruption. We found that vividness increased as the time allowed for image generation was augmented. This relationship was consistently detected in half of the participants and for all stimuli. The present findings support the implicit assumption of some current imagery models positing that mental images “improve” over time, and reject the alternative that images are generated in full detail before becoming accessible to consciousness. However, the “incremental” view is unsatisfactory for imagery models which make no (or not enough) room for individual differences.

College Quality and Wages in the United States

2005 ◽  
Vol 6 (3) ◽  
pp. 415-443 ◽  
Author(s):  
Dan Black ◽  
Kermit Daniel ◽  
Jeffrey Smith
Keyword(s):  
Social Cost ◽  
Cost Benefit ◽  
The United States ◽  
Demographic Variables ◽  
College Quality ◽  
Using Data ◽  
As Effects ◽  
Over Time ◽  
Identification Strategy

Abstract We estimate the effects of the quality of the college a student attends on their later earnings using data from a cohort of US college students from the late 1970s and early 1980s. We rely on a linear selection on observables identification strategy, which is justified in our context by a very rich set of conditioning variables. We find economically important earnings effects of college quality for men and women, as well as effects on educational attainment, spousal earnings and other demographic variables. These effects remain roughly constant over time and result primarily from effects on wages, rather than from effects on hours or labor force participation. We find that, over the lower part of the range of college quality, increases in college quality (which entail higher expenditures per student) pass a simple social cost-benefit test.

scholarly journals Influence over school discipline policy: Variation across levels of governance, school contexts, and time

2017 ◽  
Vol 25 ◽  
pp. 119
Author(s):  
F. Chris Curran
Keyword(s):  
Charter Schools ◽  
School Discipline ◽  
School Contexts ◽  
Discipline Policy ◽  
Ordered Logistic Regression ◽  
Governance School ◽  
Using Data ◽  
Policy Variation ◽  
Changes Over Time ◽  
Over Time

Little research explores the relative influence of various stakeholders on school discipline policy. Using data from the SASS and ordered logistic regression, this study explores such influence while assessing variation across schools types and changes over time. Principals consistently rate themselves and teachers as the most influential stakeholders over setting school discipline policy. The proportion of racial minorities in a school predicts greater influence from higher levels of governance while charter schools report less. Increases in influence of principals and teachers over time are documented. The results may inform both policymakers and practitioners as they work to improve equitable disciplinary outcomes for students.

scholarly journals SYSTEMS-LEVEL MODELING OF BIOLOGICAL AND MOLECULAR AGING CHANGES OVER TIME

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S579-S579
Author(s):  
Morgan E Levine ◽  
Perry Kuo ◽  
Jennifer Schrack ◽  
Eleanor M Simonsick ◽  
Susan Resnick ◽  
...  
Keyword(s):  
Aging Process ◽  
Biological Aging ◽  
Systems Dynamics ◽  
Epigenetic Alterations ◽  
Biological Organization ◽  
Biomarkers Of Aging ◽  
Baltimore Longitudinal Study ◽  
Using Data ◽  
Changes Over Time ◽  
Over Time

Abstract Aging is associated with numerous changes at all levels of biological organization. Harnessing this information to develop measures that accurately and reliably quantify the biological aging process will require longitudinal modeling and incorporation of systems level approaches. We will describe applications of network modeling for longitudinal multi-system biomarker data. Using data from the Baltimore Longitudinal Study of Aging (BLSA) we are able to generate systems level models of biological and physiological function, and then demonstrate how these networks change with age. We will also link systems-level aging changes to hallmarks of aging, including epigenetic alterations, senescence, mitochondrial dysfunction, and proteostasis. Given the complexity of the biological aging process, modeling of systems dynamics over time will both lead to the development of better biomarkers of aging, and also inform our conceptualization of how alterations at the molecular level propagate up levels of organization to eventually influence morbidity and mortality risk.

scholarly journals Prospective cohort study of patients with advanced cancer and their relatives on the experienced quality of care and life (eQuiPe study): a study protocol

2020 ◽  
Vol 19 (1) ◽  
Author(s):  
Janneke van Roij ◽  
◽  
Myrte Zijlstra ◽  
Laurien Ham ◽  
Linda Brom ◽  
...  
Keyword(s):  
Palliative Care ◽  
Cohort Study ◽  
Quality Of Care ◽  
The Netherlands ◽  
Advanced Cancer ◽  
Number Of Patients ◽  
Changes Over Time ◽  
Prospective Longitudinal ◽  
Over Time

Abstract Background Palliative care is becoming increasingly important because the number of patients with an incurable disease is growing and their survival is improving. Previous research tells us that early palliative care has the potential to improve quality of life (QoL) in patients with advanced cancer and their relatives. According to limited research on palliative care in the Netherlands, patients with advanced cancer and their relatives find current palliative care suboptimal. The aim of the eQuiPe study is to understand the experienced quality of care (QoC) and QoL of patients with advanced cancer and their relatives to further improve palliative care. Methods A prospective longitudinal observational cohort study is conducted among patients with advanced cancer and their relatives. Patients and relatives receive a questionnaire every 3 months regarding experienced QoC and QoL during the palliative trajectory. Bereaved relatives receive a final questionnaire 3 to 6 months after the patients’ death. Data from questionnaires are linked with detailed clinical data from the Netherlands Cancer Registry (NCR). By means of descriptive statistics we will examine the experienced QoC and QoL in our study population. Differences between subgroups and changes over time will be assessed while adjusting for confounding factors. Discussion This study will be the first to prospectively and longitudinally explore experienced QoC and QoL in patients with advanced cancer and their relatives simultaneously. This study will provide us with population-based information in patients with advanced cancer and their relatives including changes over time. Results from the study will inform us on how to further improve palliative care. Trial registration Trial NL6408 (NTR6584). Registered in Netherlands Trial Register on June 30, 2017.

scholarly journals Changes in the nutritional quality of fast-food items marketed at restaurants, 2010v.2013

2018 ◽  
Vol 21 (11) ◽  
pp. 2117-2127 ◽  
Author(s):  
Jackie Soo ◽  
Jennifer L Harris ◽  
Kirsten K Davison ◽  
David R Williams ◽  
Christina A Roberto
Keyword(s):  
Fast Food ◽  
Nutritional Quality ◽  
Fast Food Restaurant ◽  
Nutrient Profile ◽  
Food Items ◽  
The Usa ◽  
Fast Food Restaurants ◽  
Changes Over Time ◽  
Over Time

AbstractObjectiveTo examine the nutritional quality of menu items promoted in four (US) fast-food restaurant chains (McDonald’s, Burger King, Wendy’s, Taco Bell) in 2010 and 2013.DesignMenu items pictured on signs and menu boards were recorded at 400 fast-food restaurants across the USA. The Nutrient Profile Index (NPI) was used to calculate overall nutrition scores for items (higher scores indicate greater nutritional quality) and was dichotomized to denote healthierv.less healthy items. Changes over time in NPI scores and energy of promoted foods and beverages were analysed using linear regression.SettingFour hundred fast-food restaurants (McDonald’s, Burger King, Wendy’s, Taco Bell; 100 locations per chain).SubjectsNPI of fast-food items marketed at fast-food restaurants.ResultsPromoted foods and beverages on general menu boards and signs remained below the ‘healthier’ cut-off at both time points. On general menu boards, pictured items became modestly healthier from 2010 to 2013, increasing (mean (se)) by 3·08 (0·16) NPI score points (P<0·001) and decreasing (mean (se)) by 130 (15) kJ (31·1 (3·65) kcal;P<0·001). This pattern was evident in all chains except Taco Bell, where pictured items increased in energy. Foods and beverages pictured on the kids’ section showed the greatest nutritional improvements. Although promoted foods on general menu boards and signs improved in nutritional quality, beverages remained the same or became worse.ConclusionsFoods, and to a lesser extent, beverages, promoted on menu boards and signs in fast-food restaurants showed limited improvements in nutritional quality in 2013v.2010.

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