Articles de revues : « Wills – Virginia – Fairfax County »

1

Jia, Wenyu, et Brendan Ford. « Transit GIS Applications in Fairfax County, Virginia ». Journal of Public Transportation 2, n^o 4 (décembre 1999) : 41–59. http://dx.doi.org/10.5038/2375-0901.2.4.3.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

2

Khan, Ifty, et Gilbert Osei-Kwadwo. « OPTIMIZATION OF WASTEWATER COLLECTION SYSTEM IN FAIRFAX COUNTY, VIRGINIA ». Proceedings of the Water Environment Federation 2002, n^o 6 (1 janvier 2002) : 551–56. http://dx.doi.org/10.2175/193864702785301015.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

3

Parece, Tammy E., et James B. Campbell. « Identifying Urban Watershed Boundaries and Area, Fairfax County, Virginia ». Photogrammetric Engineering & ; Remote Sensing 81, n^o 5 (1 mai 2015) : 365–72. http://dx.doi.org/10.14358/pers.81.5.365.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

4

Driscoll, John T. « Technological Literacy in the Curriculum : a View From Fairfax County, Virginia ». Bulletin of Science, Technology & ; Society 7, n^o 1-2 (février 1987) : 159–66. http://dx.doi.org/10.1177/027046768700700128.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

5

Frink, Lynne, et Curtiss J. Clumpner. « WILDLIFE RESPONSE : COLONIAL PIPELINE SPILL ». International Oil Spill Conference Proceedings 1995, n^o 1 (1 février 1995) : 861–62. http://dx.doi.org/10.7901/2169-3358-1995-1-861.

Texte intégral

Résumé :

ABSTRACT Tri-State Bird Rescue and Research was contracted to manage the wildlife response following a discharge of 340,000 gallons of No. 2 diesel fuel into Sugarland Creek in Fairfax County, Virginia, on March 28, 1993. A wildlife stabilization team was sent to Virginia to establish an on-site medical stabilization facility for affected animals, which were then transferred to Tri-State's oil spill rehabilitation facility in Delaware. Treating some of the less-frequently (nonavian) oiled wild animals, including turtles and beavers, presented challenges. Colleague participation and interagency coordination were both important.

Styles APA, Harvard, Vancouver, ISO, etc.

6

Chapin, Jeff. « Design Build Construction of 15.2M Water Reuse System in Fairfax County, Virginia ». Proceedings of the Water Environment Federation 2012, n^o 8 (1 janvier 2012) : 6583–93. http://dx.doi.org/10.2175/193864712811703469.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

7

Kang, Ranbir S. « Geomorphic Effects of Mosses in a Low-Order Stream in Fairfax County, Virginia ». Physical Geography 33, n^o 4 (juillet 2012) : 360–82. http://dx.doi.org/10.2747/0272-3646.33.4.360.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

8

Steury, Brent W., Gary P. Fleming et Mark T. Strong. « An Emendation of the Vascular Flora of Great Falls Park, Fairfax County, Virginia ». Castanea 73, n^o 2 (juin 2008) : 123–49. http://dx.doi.org/10.2179/0008-7475(2008)73[123:aeotvf]2.0.co;2.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

9

Henning, Tyler C., John M. Orr, Joshua D. Smith, Jorge R. Arias et Douglas E. Norris. « Spotted Fever Group Rickettsiae in Multiple Hard Tick Species from Fairfax County, Virginia ». Vector-Borne and Zoonotic Diseases 14, n^o 7 (juillet 2014) : 482–85. http://dx.doi.org/10.1089/vbz.2013.1534.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

10

Hekl, Jessica A., et Randel L. Dymond. « Runoff Impacts and LID Techniques for Mansionization-Based Stormwater Effects in Fairfax County, Virginia ». Journal of Sustainable Water in the Built Environment 2, n^o 4 (novembre 2016) : 05016001. http://dx.doi.org/10.1061/jswbay.0000815.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

11

Menuey, Brendan, et Evangeline Petrich. « Q & ; A ». Journal of School Administration Research and Development 2, n^o 1 (15 juin 2017) : 5–7. http://dx.doi.org/10.32674/jsard.v2i1.1920.

Texte intégral

Résumé :

In his book The Principal Michael Fullan stated, the principal's responsibilities have increased enormously over the last two decades. They are expected to run a smooth school; manage health, safety, and the building: innovate without upsetting anyone; connect with students and teachers; be responsive to parents and the community; answer to their districts, and above all deliver results.” At Fairfax County Public Schools (FCPS) in Virginia, Dr. Brendan Menuey and Evangeline Petrich both serve as executive principals; supporting, developing, and supervising principals whose responsibilities are as enormous as Fullan aptly describes.

Styles APA, Harvard, Vancouver, ISO, etc.

12

Hellinga, Laurie A., Anne T. McCartt et Srinivas Mandavilli. « Temporal Patterns of Crashes of 16-to 17-Year-Old Drivers in Fairfax County, Virginia ». Traffic Injury Prevention 8, n^o 4 (25 octobre 2007) : 377–81. http://dx.doi.org/10.1080/15389580701354177.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

13

Frankenberg, Erica, Christopher S. Fowler, Sarah Asson et Ruth Krebs Buck. « Demographic Change and School Attendance Zone Boundary Changes : Montgomery County, Maryland, and Fairfax County, Virginia, Between 1990 and 2010 ». RSF : The Russell Sage Foundation Journal of the Social Sciences 9, n^o 2 (février 2023) : 75–103. http://dx.doi.org/10.7758/rsf.2023.9.2.04.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

14

Connor, Theresa E., et R. Christian Jones. « Zooplankton dynamics in an artificially destratified reservoir, Lake Barcroft, Fairfax County, Virginia : a 2-year study ». SIL Proceedings, 1922-2010 27, n^o 5 (décembre 2000) : 2950–53. http://dx.doi.org/10.1080/03680770.1998.11898212.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

15

Park, Byeonghwa, et Jae Kwon Bae. « Using machine learning algorithms for housing price prediction : The case of Fairfax County, Virginia housing data ». Expert Systems with Applications 42, n^o 6 (avril 2015) : 2928–34. http://dx.doi.org/10.1016/j.eswa.2014.11.040.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

16

Jones, Edgar R., et Chris B. Caperton. « DEVELOPING A CUSTOMER OUTREACH PROGRAM FOR THE WASTEWATER MANAGEMENT PROGRAM IN THE COUNTY OF FAIRFAX, VIRGINIA ». Proceedings of the Water Environment Federation 2004, n^o 2 (1 janvier 2004) : 387–409. http://dx.doi.org/10.2175/193864704784342127.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

17

Bleiweis, Marjorie, et Robert D. Harris. « Peace partners : A cooperative problem-solving partnership among educators in Israel, Palestine, and Fairfax County, Virginia ». Conflict Resolution Quarterly 25, n^o 1 (2007) : 61–69. http://dx.doi.org/10.1002/crq.191.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

18

Bhalala, Hina V., Joshua D. Smith, Brent A. O'Dea et Jorge R. Arias. « The Efficacy of the BG-Sentinel™ CO2Nozzle in Collecting Host-Seeking Mosquitoes in Fairfax County, Virginia ». Journal of the American Mosquito Control Association 26, n^o 2 (juin 2010) : 226–28. http://dx.doi.org/10.2987/09-5942.1.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

19

Bakhshi, Ali A., et Sharon M. deMonsabert. « A GIS Methodology for Estimating the Carbon Footprint in Municipal Water and Wastewater in Fairfax County, Virginia ». Energy Engineering 106, n^o 5 (septembre 2009) : 7–24. http://dx.doi.org/10.1080/01998590909594541.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

20

Hooten, Anthony J. « Fairfax County, Virginia : A case-study for an ecological-resource inventory program for use by local governments ». Forest Ecology and Management 33-34 (juin 1990) : 253–69. http://dx.doi.org/10.1016/0378-1127(90)90197-j.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

21

Chen, Chuansheng, Shin-ying Lee et Harold W. Stevenson. « Response Style and Cross-Cultural Comparisons of Rating Scales Among East Asian and North American Students ». Psychological Science 6, n^o 3 (mai 1995) : 170–75. http://dx.doi.org/10.1111/j.1467-9280.1995.tb00327.x.

Texte intégral

Résumé :

This report examines cross-cultural differences in response style regarding the use of rating scales Subjects were high school students 944 from Sendai (Japan), 1,357 from Taipei (Taiwan), 687 from Edmonton and Calgary (Canada), and 2,174 from the Minneapolis metropolitan area and Fairfax County, Virginia Responses to fifty-seven 7-point Likert-type scales were analyzed The Japanese and Chinese students were more likely than the two North American groups to use the midpoint on the scales, the U S subjects were more likely than the other three groups to use the extreme values Within each cultural group, endorsement of individualism was positively related to the use of extreme values and negatively related to the use of the midpoint These small, albeit statistically significant, differences in response styles generally did not alter cross-cultural comparisons of item means

Styles APA, Harvard, Vancouver, ISO, etc.

22

Kline, S. W., D. G. Mose et I. Zietz. « The use of gamma aeroradioactivity in regional indoor radon prediction : a case study from Fairfax County, Virginia, USA ». Journal of Radiological Protection 9, n^o 2 (1 juin 1989) : 121–28. http://dx.doi.org/10.1088/0952-4746/9/2/005.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

23

Hu, Lan, Yongwan Chun et Daniel A. Griffith. « A Multilevel Eigenvector Spatial Filtering Model of House Prices : A Case Study of House Sales in Fairfax County, Virginia ». ISPRS International Journal of Geo-Information 8, n^o 11 (10 novembre 2019) : 508. http://dx.doi.org/10.3390/ijgi8110508.

Texte intégral

Résumé :

House prices tend to be spatially correlated due to similar physical features shared by neighboring houses and commonalities attributable to their neighborhood environment. A multilevel model is one of the methodologies that has been frequently adopted to address spatial effects in modeling house prices. Empirical studies show its capability in accounting for neighborhood specific spatial autocorrelation (SA) and analyzing potential factors related to house prices at both individual and neighborhood levels. However, a standard multilevel model specification only considers within-neighborhood SA, which refers to similar house prices within a given neighborhood, but neglects between-neighborhood SA, which refers to similar house prices for adjacent neighborhoods that can commonly exist in residential areas. This oversight may lead to unreliable inference results for covariates, and subsequently less accurate house price predictions. This study proposes to extend a multilevel model using Moran eigenvector spatial filtering (MESF) methodology. This proposed model can take into account simultaneously between-neighborhood SA with a set of Moran eigenvectors as well as potential within-neighborhood SA with a random effects term. An empirical analysis of 2016 and 2017 house prices in Fairfax County, Virginia, illustrates the capability of a multilevel MESF model specification in accounting for between-neighborhood SA present in data. A comparison of its model performance and house price prediction outcomes with conventional methodologies also indicates that the multilevel MESF model outperforms standard multilevel and hedonic models. With its simple and flexible feature, a multilevel MESF model can furnish an appealing and useful approach for understanding the underlying spatial distribution of house prices.

Styles APA, Harvard, Vancouver, ISO, etc.

24

Fornadel, Christen M., Xing Zhang, Joshua D. Smith, Christopher D. Paddock, Jorge R. Arias et Douglas E. Norris. « High Rates ofRickettsia parkeriInfection in Gulf Coast Ticks (Amblyomma maculatum) and Identification of “CandidatusRickettsia Andeanae” from Fairfax County, Virginia ». Vector-Borne and Zoonotic Diseases 11, n^o 12 (décembre 2011) : 1535–39. http://dx.doi.org/10.1089/vbz.2011.0654.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

25

Rothschild, Heidie R., et Kathleen Mathieson. « Effects of Tactical Emergency Casualty Care Training for Law Enforcement Officers ». Prehospital and Disaster Medicine 33, n^o 5 (31 août 2018) : 495–500. http://dx.doi.org/10.1017/s1049023x18000730.

Texte intégral

Résumé :

AbstractObjectiveThis study evaluated how Tactical Emergency Casualty Care (TECC) training prepared law enforcement officers (LEOs) with the tools necessary to provide immediate, on-scene medical care to successfully stabilize victims of trauma.MethodsThis was a retrospective, de-identified study using a seven-item Fairfax County (Virginia USA) TECC After-Action Questionnaire and Arlington County (Virginia USA) police reports.ResultsForty-six encounters were collected from 2015 through 2016. Eighty-four percent (n=39) of the encounters were from TECC After-Action Questionnaires and 15% (n=7) were from police reports. The main injuries included 13% (n=6) arterial bleeds, 46% (n=21) mild/moderate bleeds, 37% (n=17) large wounds, 20% (n=9) penetrating chest wounds, and 13% (n=6) open abdominal wounds. One-hundred percent of officers reported success in stabilizing victim injuries. Seventy-four percent of officers (n=26) did not encounter problems caring for a patient while 26% (n=9) encountered a problem. Ninety-seven percent (n=37/38) answered Yes, the training was sufficient, and three percent (n=1) indicated it was OK.ConclusionThis is the most comprehensive study of TECC use among LEOs to date that supports the importance of TECC training for all LEOs in prehospital trauma care. Results of this study showed TECC training prepared LEOs with the operational tools necessary to provide immediate, on-scene medical care to successfully stabilize victims of trauma. Continuing to train increasing numbers of LEOs in TECC is key to saving the lives of victims of trauma in the future.RothschildHR, MathiesonK.Effects of Tactical Emergency Casualty Care training for law enforcement officers. Prehosp Disaster Med.2018;33(5):495–500.

Styles APA, Harvard, Vancouver, ISO, etc.

26

Kang, Ranbir Singh. « Geomorphic characteristics of riffle-pool spacing in a low order stream with high rates of bank erosion in Fairfax County, Virginia ». Zeitschrift für Geomorphologie 58, n^o 4 (1 décembre 2014) : 459–70. http://dx.doi.org/10.1127/0372-8854/2014/0136.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

27

Muhammad Alam, Muhammad Sarwar et Ashfaque Ahmad Shah. « Developing English Speaking Skill Indigenously Among the Prospective Teachers ». Review of Economics and Development Studies 5, n^o 4 (31 décembre 2019) : 731–40. http://dx.doi.org/10.26710/reads.v5i4.912.

Texte intégral

Résumé :

Present research experimentally studied the effectiveness of indigenously developed Content and Language Integrated Modular Approach (CLIMA) especially designed for developing English language ability among university students. CLIMA is a blend of Content and Language Integrated Approach and the Modular Approach. Two equated groups of total 52 students from Bachelor of Education Programme (semester-I) participated in this randomised pre-test post-test control group experiment. The content used herein comprised a purposefully designed module of 5 units. Both groups were taught by the same specifically trained teacher on same days with an interval of one hour between the sessions with the two groups. Experiment was completed in 30 sessions (1.5 hour each) during 10 weeks. For both pre- and post-testing, the researchers used the Analytic Rubric of Fairfax County Public Schools (Virginia, USA). This Analytic Rubric has been termed as the Performance Assessment for Language Students (PALS). The experimental group witnessed (pre-testing = 31.6%, post-testing = 80.8%) a value addition of 49.2%; and the control group witnessed (pre-testing = 31.2%, post-testing = 66.2%) a value addition of 35.0%. Compared with TOEFL and IELTS, conclusively, CLIMA was found highly effective. Results are discussed in detail in the paper.

Styles APA, Harvard, Vancouver, ISO, etc.

28

Zirbel, K., P. Balint et E. C. M. Parsons. « Public awareness and attitudes towards naval sonar mitigation for cetacean conservation : A preliminary case study in Fairfax County, Virginia (the DC Metro area) ». Marine Pollution Bulletin 63, n^o 1-4 (2011) : 49–55. http://dx.doi.org/10.1016/j.marpolbul.2011.03.007.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

29

Koob, Kevin, Roger Lafferiere, Jennie DeVeaux et Greg DeMarco. « THE COLONIAL PIPELINE SPILL : A CASE STUDY ». International Oil Spill Conference Proceedings 1995, n^o 1 (1 février 1995) : 473–78. http://dx.doi.org/10.7901/2169-3358-1995-1-473.

Texte intégral

Résumé :

ABSTRACT The response to the Colonial Pipeline spill in Fairfax County, Virginia, provided an opportunity to apply the emergency response concepts of the Oil Pollution Act of 1990. Protection of human health and the environment was the paramount goal of the response. This goal was successfully achieved through the establishment of a unified command system to coordinate federal, state, and local interests and activities. The major operational objectives of the response were to secure the source of the spill, limit its migration through the use of containment boom, and recover spilled oil by using skimmers and other mechanical means. For the most part, these operational objectives were achieved in an efficient manner. However, some difficulties were encountered due to the inaccessibility of the major recovery area, debris-clogged skimmers, and insufficient supply of on-scene response resources. Such problems were addressed through the use of additional federal resources and innovative response principles, such as the construction of a temporary pipeline to transport recovered oil. Agencies involved in the response noted strengths and weaknesses in the areas of logistics, notification, communication, resource availability, and response actions and highlighted areas for improvement. The review and future implementation of such lessons learned can enhance the level of preparedness for spills of a similar nature.

Styles APA, Harvard, Vancouver, ISO, etc.

30

Chapin, Jeff, Allen Hogge et Kailash Gupta. « NEW PUMP STATION AND 16 MG EQUALIZATION TANK FOR PEAK FLOW SHAVING AT THE NOMAN M. COLE, JR. POLLUTION CONTROL PLANT FAIRFAX COUNTY, VIRGINIA ». Proceedings of the Water Environment Federation 2000, n^o 9 (1 janvier 2000) : 385–403. http://dx.doi.org/10.2175/193864700784546350.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

31

Park, Byeonghwa, et Jae Kwon Bae. « Corrigendum to “Using machine learning algorithms for housing price prediction : The case of Fairfax County, Virginia housing data” [Expert Systems with Applications 42 (2015) 2928–2934] ». Expert Systems with Applications 42, n^o 19 (novembre 2015) : 6806. http://dx.doi.org/10.1016/j.eswa.2015.03.005.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

32

Hong, C. X., P. A. Richardson, P. Kong, S. N. Jeffers et S. W. Oak. « Phytophthora tropicalis Isolated from Diseased Leaves of Pieris japonica and Rhododendron catawbiense and Found in Irrigation Water and Soil in Virginia ». Plant Disease 90, n^o 4 (avril 2006) : 525. http://dx.doi.org/10.1094/pd-90-0525c.

Texte intégral

Résumé :

An unidentified species of Phytophthora was isolated from irrigation water at a production nursery in Suffolk, VA in 2000 and 2001. Water samples were assayed using a filtration method (3). A similar species was recovered from soil samples collected in two mixed-hardwood forests in Fairfax County in 2002. Soil samples were air dried, remoistened, flooded, and then baited with rhododendron and camellia leaf pieces at room temperature (22 to 24°C) (2). A Phytophthora sp. was recovered from bait pieces cultured on PARPH-V8 selective medium (2). This same species also was isolated from symptomatic leaves of Pieris japonica cv. Temple Bells and Rhododendron catawbiense cv. Maximum Roseum at a garden center in Virginia Beach in 2004. On P. japonica, symptoms appeared as water-soaked, necrotic lesions and marginal necrosis on leaves and necrosis of shoot tips; on R. catawbiense, symptoms were wilting, dieback, and death of shoots. Representative isolates produced semipapillate to papillate sporangia with tapered bases that were caducous and had long pedicels (16 to 120 μm). Sporangia on four isolates were measured: mean lengths were 40.6 to 48.4 μm, mean widths were 26.9 to 31.4 μm, and length/width ratios consistently were 1.5. Sporangia occasionally were distorted and had dual apices, and they often contained a large globule after zoospore release. Chlamydospores ranged from 25 to 32 μm in diameter. All isolates were heterothallic; four isolates paired with known isolates of P. nicotianae were found to be mating type A1. Optimum temperature for mycelium growth on cornmeal agar was 25°C with slight growth at 35°C by some isolates and no growth at 4°C. These morphological characteristics were mostly consistent with those of P. tropicalis (1). P. tropicalis is reported to have sporangia that are papillate, have lengths of 40 to 55 μm, widths of 19 to 27 μm, and length/width ratios of 1.8 to 2.4 (1). The identity of these isolates as P. tropicalis was confirmed using single-strand conformational polymorphism analysis with comparison to a reference isolate (4). These isolates have been retained in permanent collections in the Hong and Jeffers labs. One isolate from each host plant and one isolate from irrigation water were tested for pathogenicity; agar blocks of mycelium (4 × 4 mm) were placed on wounded and nonwounded leaves of P. japonica cv. Mountain Fire and R. catawbiense cv. Olga plants and wrapped with Parafilm to prevent desiccation. Lesions formed on wounded and nonwounded leaves after 4 days at 20 to 30°C, and P. tropicalis was reisolated; no lesions formed on noninoculated control leaves. To our knowledge, this is the first report of P. tropicalis in the continental United States, in irrigation water systems, and as a cause of Phytophthora foliage blight on P. japonica and R. catawbiense (1). This study suggests that the host range of this pathogen is not limited to tropical plants. Although this pathogen did not cause significant economic loss in the garden center surveyed, it was isolated in irrigation water at the production nursery from late spring through fall. An investigation of its impact on nursery crops is warranted. References: (1) M. Aragaki and J. Y. Uchida. Mycologia 93:137, 2001. (2) A. J. Ferguson and S. N. Jeffers. Plant Dis. 83:1129, 1999. (3) C. X. Hong et al. Phytopathology 92:610, 2002. (4) P. Kong et al. Fungal Genet. Biol. 39:238, 2003.

Styles APA, Harvard, Vancouver, ISO, etc.

33

Anglin-Irwin, Kathryn Marie, et Young B. Kim. « Comparison of Aerobic Digestion and Oxidation Ditch Wastewater Treatment Systems ». Proceedings of the West Virginia Academy of Science 93, n^o 1 (1 avril 2021). http://dx.doi.org/10.55632/pwvas.v93i1.833.

Texte intégral

Résumé :

Wastewater treatment is the process of converting wastewater into water that is suitable to be discharged back into the environment. Proper wastewater treatment is essential in order to ensure the health of the population and the environment. According to a June 2012 USEPA case study in Fairfax County, Virginia, poorly designed/managed wastewater treatment systems lead to the pollution of nearly 900 miles of streams, lakes, and ponds. Due to environmental consequences resulting from poor management, two distinct treatment systems will be explored to observe their efficacy. They are aerobic digestion at Bland Correctional Center and oxidation ditch at Appalachian Detention Center. Both systems are common as they are simple and cost effective.My hypothesis is that aerobic digestion will be the more effective over oxidation ditch, and objective is to determine which is the more effective system. The tests to be performed include carbonaceous biochemical oxygen demand, total suspended solids, and E. coli. Once all data from both institutions are collected, it will all be analyzed and compared against current USEPA standards.It is anticipated that the Bland Correctional Center’s aerobic digestion system will have much lower E. coli, TSS, and CBOD readings in their samples because the institution sends samples to Blue Ridge Analytical Environmental Laboratory thrice weekly to ensure compliance to EPA standards, while Appalachian Detention Center only sends samples once monthly. Given the data observed so far, all tests conducted at Bland Correctional Center have proved that the facility is well within compliance of USPEA standards.

Styles APA, Harvard, Vancouver, ISO, etc.

34

Cesme, Burak, Peter G. Furth, Ryan Casburn et Kevin Lee. « Development of Pedestrian Recall Versus Actuation Guidelines for Pedestrian Crossings at Signalized Intersections ». Transportation Research Record : Journal of the Transportation Research Board, 29 mars 2021, 036119812110028. http://dx.doi.org/10.1177/03611981211002846.

Texte intégral

Résumé :

At signalized intersections, pedestrian phases can be configured as recall or pushbutton actuated. While pedestrian recall results in a moderate reduction in pedestrian delay because, with recall, a pedestrian arriving during the time nominally reserved for the Walk interval will be served immediately rather than waiting to be served in the next cycle, it can also lead to longer cycle lengths, increasing delay for all users, including pedestrians. This research explores the impact of pedestrian recall along a coordinated-actuated arterial for pedestrians crossing the mainline (i.e., crossing the coordinated phase) to provide pedestrian recall versus actuation guidelines for agencies. The guidance was developed with the aim of balancing pedestrian delay with operational efficiency for vehicles. Two criteria were considered while developing the guidance: (1) pedestrian demand; and (2) vehicular green time duration for the concurrent vehicle phase that is parallel to the pedestrian crossing. VISSIM microsimulation software was used on a real network in Fairfax County, Virginia to model the effects of pedestrian recall and actuation. Results showed that pedestrian recall should be considered when pedestrian demand is large enough that there is a pedestrian call in most cycles (pedestrian probability in a given cycle is greater than 0.6 or pedestrian volume per cycle is greater than 0.9). The guidance also suggests setting pedestrian phases on recall when the length of the vehicular green for the concurrent phase is long enough in most cycles that a pedestrian phase would fit without constraining the signal cycle length.

Styles APA, Harvard, Vancouver, ISO, etc.

35

Zhang, Olivia, et Yanfeng Xue. « Employee resignation study in Fairfax County ». Journal of Emerging Investigators, 2023. http://dx.doi.org/10.59720/22-141.

Texte intégral

Résumé :

The Great Resignation is an economic trend in which employees have voluntarily resigned from their jobs en masse. Increasing resignations have created hardships for companies during the COVID-19 pandemic. This article examines the presence of the Great Resignation in Fairfax County, Virginia, the consequences of this phenomenon, and possible solutions that local businesses can adopt to minimize the impact of resignations. We hypothesized that by adding benefits such as hybrid work options and healthcare, local companies can fight increasing resignation rates. We collected and analyzed two types of data to verify the hypothesis. The first type was statistical data published by US federal and local governments. The second type was survey data. We created a ten-question survey (the Fairfax Resignation Survey) and sent it to 2,000 employees in Fairfax County. The questions covered the demography of survey respondents, employee turnover status, impact of increasing resignations, and potential solutions to improve the situation. Based on the survey responses and a comprehensive analysis of statistical data and related studies, we concluded that adding additional benefits is critical for companies to retain talent and restrain the growing resignation rate.

Styles APA, Harvard, Vancouver, ISO, etc.

36

Shayer, Ryan, Robert Oliver et Margaret Cowell. « On the edge of completeness : The struggle to negotiate an ‘urban’ identity in Leesburg, Virginia ». Southeastern Geographer, juillet 2024. http://dx.doi.org/10.1353/sgo.0.a932237.

Texte intégral

Résumé :

Leesburg, Virginia, located approximately forty miles northwest of Washington’s downtown core, has historically avoided the intense urban development pressures that many of Washington’s more proximate suburban locations (i.e. Fairfax, Falls Church, Ashburn and Arlington) have experienced. Yet, Leesburg's position in Loudon County – one of the fastest growing counties in the United States in terms of population growth over the past two decades – now means that the Town of Leesburg is no longer situated in the metropolitan fringe. We posit that a recent development named Virginia Village represents a key turning point in the town’s urban development history, specifically because the project reveals the uncertainty of the town’s planning agenda and reveals the difficulties of protecting an authentic sense of place and small town-feel that distinguishes Leesburg from its neighboring suburban localities.

Styles APA, Harvard, Vancouver, ISO, etc.

37

Bily, Devin, et Beth McClelland. « First Report of Phytophthora nicotianae causing leaf necrosis on Magnolia ‘Butterflies’ in a Virginia ornamental plant nursery ». Plant Health Progress, 19 décembre 2022. http://dx.doi.org/10.1094/php-10-22-0114-br.

Texte intégral

Résumé :

Magnolia ‘Butterflies’ is a deciduous hybrid cultivar resulting from a cross between M. acuminata and M. denudata. It is a pyramidal ornamental tree or multi-stemmed shrub that grows well in USDA hardiness zones 5 to 9, with fragrant, canary yellow flowers. On 06 July 2021, during a survey at a Fairfax County, VA ornamental plant nursery, six out of 11 plants in 18.9-liter pots exhibited leaf necrosis and premature senescence on the lower branches.

Styles APA, Harvard, Vancouver, ISO, etc.

38

Shipp, Stephanie, Joshua Goldstein, Vicki Lancaster et Sophia Dutton. « Developing a Data-driven Approach to inform Planning in County Health and Human Services Departments in the Context of a Case Study on Obesity ». International Journal of Population Data Science 3, n^o 5 (12 octobre 2018). http://dx.doi.org/10.23889/ijpds.v3i5.1077.

Texte intégral

Résumé :

Since the 1970s, the obesity rate has steadily increased due to growing availability of food and declining physical activity. The existing environments within a community, including active recreation opportunities, access to healthy food options, the built environment, and transportation options, can moderate obesity. In Virginia, Fairfax County Health and Human Services (HHS) system is interested in developing the capacity for data-driven approaches to gain insights on current and future issues, such as obesity, to characterize factors at the county and sub-county level, and to use these insights to inform policy options. In exploring these questions, we developed statistical methods to combined data from a multitude of different sources including local administrative data (e.g., tax assessments, land use, student surveys), place-based data, and federal collections. Using synthetic data methods based on imputation, we recomputed American Community Survey statistics for non-Census tract geographic regions for political districts and high school attendance areas. We combined this with environmental factors, such as land dedicated to parks and recreation facilities, as well as measures of the density of healthy and unhealthy food locations to create a map of potentially obesogenic factors. Finally, we combined these data sources with Fairfax County’s youth survey and trained a random forest model to predict the effects of the environment on healthy food consumption and exercise. Our analysis highlights the need for (administrative) data at a fine scale and recommends policy changes concerning the recording and sharing of local data to better inform the policy and program development.

Styles APA, Harvard, Vancouver, ISO, etc.

39

Zawada, Sonya G., Michael E. von Fricken, Thomas A. Weppelmann, Masoumeh Sikaroodi et Patrick M. Gillevet. « Genetic variation of Borreliella burgdorferi in Fairfax County, Virginia, targeting the OspC gene in white-footed mice ». Frontiers in Microbiology 13 (18 novembre 2022). http://dx.doi.org/10.3389/fmicb.2022.998365.

Texte intégral

Résumé :

Outer surface protein C (OspC) is a commonly used marker in population studies of Borreliella to differentiate types and establish evolution over time. Investigating the ospC genetic types of Borreliella burgdorferi across multiple organ tissues of white-footed mice has the potential to contribute to our understanding of Lyme disease and the wide spectrum of clinical presentation associated with infection. In this study, five unique tissue types were sampled from 90 mice and screened for B. burgdorferi infections. This initial screening revealed a 63% overall B. burgdorferi infection rate in the mice collected (57/90). A total of 163 tissues (30.4%) tested positive for B. burgdorferi infections and when mapped to Borreliella types, 143,894 of the initial 322,480 reads mapped to 10 of the reference sequences in the ospC strain library constructed for this study at a 97% MOI. Two tissue types, the ear and the tongue, each accounted for 90% of the observed Borreliella sequence diversity in the tissue samples surveyed. The largest amount of variation was observed in an individual ear tissue sample with six ospC sequence types, which is equivalent to 60% of the observed variation seen across all tested specimens, with statistically significant associations observed between tissue type and detected Borreliella. There is strong evidence for genetic variability in B. burgdorferi within local white-footed mouse populations and even within individual hosts by tissue type. These findings may shed light on drivers of infection sequalae in specific tissues in humans and highlights the need for expanded surveillance on the epigenetics of B. burgdorferi across reservoirs, ticks, and infected patients.

Styles APA, Harvard, Vancouver, ISO, etc.

40

Atwal, Kuldip Singh, Taylor Anderson, Dieter Pfoser et Andreas Züfle. « Predicting building types using OpenStreetMap ». Scientific Reports 12, n^o 1 (20 novembre 2022). http://dx.doi.org/10.1038/s41598-022-24263-w.

Texte intégral

Résumé :

AbstractHaving accurate building information is paramount for a plethora of applications, including humanitarian efforts, city planning, scientific studies, and navigation systems. While volunteered geographic information from sources such as OpenStreetMap (OSM) has good building geometry coverage, descriptive attributes such as the type of a building are sparse. To fill this gap, this study proposes a supervised learning-based approach to provide meaningful, semantic information for OSM data without manual intervention. We present a basic demonstration of our approach that classifies buildings into either residential or non-residential types for three study areas: Fairfax County in Virginia (VA), Mecklenburg County in North Carolina (NC), and the City of Boulder in Colorado (CO). The model leverages (i) available OSM tags capturing non-spatial attributes, (ii) geometric and topological properties of the building footprints including adjacent types of roads, proximity to parking lots, and building size. The model is trained and tested using ground truth data available for the three study areas. The results show that our approach achieves high accuracy in predicting building types for the selected areas. Additionally, a trained model is transferable with high accuracy to other regions where ground truth data is unavailable. The OSM and data science community are invited to build upon our approach to further enrich the volunteered geographic information in an automated manner.

Styles APA, Harvard, Vancouver, ISO, etc.

41

Muhammad Alam, Muhammad Sarwar et Ashfaque Ahmad Shah. « Developing English Speaking Skill Indigenously Among the Prospective Teachers ». Review of Economics and Development Studies 5, n^o 4 (1 janvier 2020). http://dx.doi.org/10.26710/reads.v5i4.884.

Texte intégral

Résumé :

Present research experimentally studied the effectiveness of indigenously developed Content and Language Integrated Modular Approach (CLIMA) especially designed for developing English language ability among university students. CLIMA is a blend of Content and Language Integrated Approach and the Modular Approach. Two equated groups of total 52 students from Bachelor of Education Programme (semester-I) participated in this randomised pre-test post-test control group experiment. The content used herein comprised a purposefully designed module of 5 units. Both groups were taught by the same specifically trained teacher on same days with an interval of one hour between the sessions with the two groups. Experiment was completed in 30 sessions (1.5 hour each) during 10 weeks. For both pre- and post-testing, the researchers used the Analytic Rubric of Fairfax County Public Schools (Virginia, USA). This Analytic Rubric has been termed as the Performance Assessment for Language Students (PALS). The experimental group witnessed (pre-testing = 31.6%, post-testing = 80.8%) a value addition of 49.2%; and the control group witnessed (pre-testing = 31.2%, post-testing = 66.2%) a value addition of 35.0%. Compared with TOEFL and IELTS, conclusively, CLIMA was found highly effective. Results are discussed in detail in the paper.

Styles APA, Harvard, Vancouver, ISO, etc.

42

Arruda, J. Roberto F., Robin Champieux, Colleen Cook, Mary Ellen K. Davis, Richard Gedye, Laurie Goodman, Neil Jacobs, David Ross et Stuart Taylor. « The Journal Impact Factor and its discontents : steps toward responsible metrics and better research assessment ». Open Scholarship Initiative Proceedings 1 (19 avril 2016). http://dx.doi.org/10.13021/g89k55.

Texte intégral

Résumé :

A small, self-selected discussion group was convened to consider issues surrounding impact factors at the first meeting of the Open Scholarship Initiative in Fairfax, Virginia, USA, in April 2016, and focused on the uses and misuses of the Journal Impact Factor (JIF), with a particular focus on research assessment. The group’s report notes that the widespread use, or perceived use, of the JIF in research assessment processes lends the metric a degree of influence that is not justified on the basis of its validity for those purposes, and retards moves to open scholarship in a number of ways. The report concludes that indicators, including those based on citation counts, can be combined with peer review to inform research assessment, but that the JIF is not one of those indicators. It also concludes that there is already sufficient information about the shortcomings of the JIF, and that instead actions should be pursued to build broad momentum away from its use in research assessment. These actions include practical support for the San Francisco Declaration on Research Assessment (DORA) by research funders, higher education institutions, national academies, publishers and learned societies. They also include the creation of an international “metrics lab” to explore the potential of new indicators, and the wide sharing of information on this topic among stakeholders. Finally, the report acknowledges that the JIF may continue to be used as one indicator of the quality of journals, and makes recommendations how this should be improved.OSI2016 Workshop Question: Impact FactorsTracking the metrics of a more open publishing world will be key to selling “open” and encouraging broader adoption of open solutions. Will more openness mean lower impact, though (for whatever reason—less visibility, less readability, less press, etc.)? Why or why not? Perhaps more fundamentally, how useful are impact factors anyway? What are they really tracking, and what do they mean? What are the pros and cons of our current reliance on these measures? Would faculty be satisfied with an alternative system as long as it is recognized as reflecting meaningfully on the quality of their scholarship? What might such an alternative system look like?

Styles APA, Harvard, Vancouver, ISO, etc.

Articles de revues sur le sujet « Wills – Virginia – Fairfax County »

Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres