WorldWideScience

Sample records for ranger district black

  1. 75 FR 3195 - Ochoco National Forest, Lookout Mountain Ranger District; Oregon; Mill Creek; Allotment...

    Science.gov (United States)

    2010-01-20

    ... Forest Service Ochoco National Forest, Lookout Mountain Ranger District; Oregon; Mill Creek; Allotment... Mountain Ranger District. These four allotments are: Cox, Craig, Mill Creek, and Old Dry Creek. The.... ADDRESSES: Send written comments to Bill Queen, District Ranger, Lookout Mountain District, Ochoco National...

  2. 77 FR 18997 - Rim Lakes Forest Restoration Project; Apache-Sitgreavese National Forest, Black Mesa Ranger...

    Science.gov (United States)

    2012-03-29

    ...] [FR Doc No: 2012-7527] DEPARTMENT OF AGRICULTURE Forest Service Rim Lakes Forest Restoration Project; Apache-Sitgreavese National Forest, Black Mesa Ranger District, Coconino County, AZ AGENCY: Forest.... Forest Service (FS) will prepare an environmental impact statement (EIS) on a proposed action to conduct...

  3. 75 FR 71666 - Bend/Ft. Rock Ranger District; Deschutes National Forest; Deschutes County, OR; West Bend...

    Science.gov (United States)

    2010-11-24

    ... Forest Service Bend/Ft. Rock Ranger District; Deschutes National Forest; Deschutes County, OR; West Bend... Jeffries, District Ranger, Bend-Fort Rock Ranger District, Red Oaks Square, 1230 NE. Third Street, Suite A...-Fort Rock Ranger District, Red Oaks Square, 1230 NE. Third Street, Suite A-262, Bend, Oregon 97701...

  4. 75 FR 43138 - Ochoco National Forest, Lookout Mountain Ranger District; Oregon; Howard Elliot Johnson Fuels and...

    Science.gov (United States)

    2010-07-23

    ... Forest Service Ochoco National Forest, Lookout Mountain Ranger District; Oregon; Howard Elliot Johnson...-acre Howard Elliot Johnson project area, which is approximately 23 miles east of Prineville, Oregon... Maurice Evans, Acting District Ranger, Lookout Mountain District, Ochoco National Forest, 3160 NE. Third...

  5. 78 FR 38287 - Bitterroot National Forest, Darby Ranger District, Como Forest Health Project

    Science.gov (United States)

    2013-06-26

    ... Forest Service Bitterroot National Forest, Darby Ranger District, Como Forest Health Project AGENCY: Forest Service. ACTION: Notice; Correction. SUMMARY: The Department of Agriculture (USDA), Forest Service, Bitterroot National Forest, Darby Ranger District published a document in the Federal Register of June 17...

  6. 78 FR 24717 - Crescent Ranger District; Deschutes National Forest; Klamath County, Oregon; Marsh Project...

    Science.gov (United States)

    2013-04-26

    ... Forest Service Crescent Ranger District; Deschutes National Forest; Klamath County, Oregon; Marsh Project... statement (EIS) for a project called Marsh, in the southwestern portion of the Crescent Ranger District just... areas such as the Marsh project area provide to people. The focal point of the planning area is Big...

  7. 76 FR 315 - Sisters Ranger District; Deschutes National Forest; Oregon; Popper Vegetation Management Project

    Science.gov (United States)

    2011-01-04

    ... Leader, Sisters Ranger District, Pine Street and Highway 20, POB 249, Sisters, Oregon 97759, or submit to... INFORMATION CONTACT: Michael Keown, Team Leader, Sisters Ranger District, Pine Street and Highway 20, POB 249... wildlife species and other ecological processes. These no treatment areas include nesting, roosting, and...

  8. 77 FR 58354 - Bend-Fort Rock Ranger District; Oregon; Withdrawal of Notice for Preparation of an Environmental...

    Science.gov (United States)

    2012-09-20

    ...; ] DEPARTMENT OF AGRICULTURE Forest Service Bend-Fort Rock Ranger District; Oregon; Withdrawal of Notice for... Bend-Fort Rock Ranger District and FHWA are withdrawing their intent to prepare an Environmental Impact... FURTHER INFORMATION CONTACT: Amy Tinderholt, Project Leader, Bend- Fort Rock Ranger District, 63095...

  9. 76 FR 23273 - Bend/Ft. Rock Ranger District; Deschutes National Forest; Deschutes County, Oregon; Mt. Bachelor...

    Science.gov (United States)

    2011-04-26

    ... Forest Service Bend/Ft. Rock Ranger District; Deschutes National Forest; Deschutes County, Oregon; Mt... Federal Register. ADDRESSES: Send written comments to Shane Jeffries, District Ranger, Bend-Fort Rock..., Recreation Team Leader, Bend-Fort Rock Ranger District, Red Oaks Square, 1230 NE Third Street Suite A-262...

  10. 77 FR 49775 - Beaverhead-Deerlodge National Forest, Wisdom and Wise River Ranger Districts; Montana; North and...

    Science.gov (United States)

    2012-08-17

    ... Forest Service Beaverhead-Deerlodge National Forest, Wisdom and Wise River Ranger Districts; Montana..., Wisdom/Wise River District Ranger at (406) 689-3243 or via email at [email protected] . Individuals who... Official The Wisdom/Wise River District Ranger will be the responsible official. Nature of Decision To Be...

  11. 75 FR 14419 - Camp Tatiyee Land Exchange on the Lakeside Ranger District of the Apache-Sitgreaves National...

    Science.gov (United States)

    2010-03-25

    ... National Forest (CNF); one 11.15 parcel to the Prescott National Forest (PNF); and five parcels totaling..., Safford, and Douglas Ranger Districts of the CNF; Bradshaw Ranger District of the PNF; Cave Creek, Tonto... the PNF, ASNFs and TNF and presented the ASNFs with their proposal for the Camp Tatiyee Land Exchange...

  12. 75 FR 16728 - Beaver Creek Landscape Management Project, Ashland Ranger District, Custer National Forest...

    Science.gov (United States)

    2010-04-02

    ... the project area by managing for early development (post disturbance), mid development closed, mid... Forest Service Beaver Creek Landscape Management Project, Ashland Ranger District, Custer National Forest... disclose the effects of ] managing forest vegetation in a manner that increases resiliency of the Beaver...

  13. 78 FR 36163 - Bitterroot National Forest, Darby Ranger District, Como Forest Health Project

    Science.gov (United States)

    2013-06-17

    ... Forest Service Bitterroot National Forest, Darby Ranger District, Como Forest Health Project AGENCY: Forest Service, USDA. ACTION: Notice of intent to prepare an environmental impact statement. SUMMARY: The USDA Forest Service, Bitterroot National Forest will prepare an environmental impact statement (EIS) to...

  14. 75 FR 10457 - Andrew Pickens Ranger District; South Carolina; AP Loblolly Pine Removal and Restoration Project

    Science.gov (United States)

    2010-03-08

    ... The Andrew Pickens Ranger District proposes the following treatments: Regeneration Harvest, With... species (sprouts and seedlings) within 1-2 years after the initial post-harvest prescribed burn. These... manual and mechanical treatment. Woodlands are forests with relatively low tree densities of 25-60...

  15. Reassessment of Loblolly Pine Decline on the Oakmulgee Ranger District, Talladega National Forest, Alabama

    Science.gov (United States)

    Nolan J. Hess; William J. Otroana; John P. Jones; Arthur J. Goddard; Charles H. Walkinshaw

    1999-01-01

    Loblolly pine (Pinus taeda L.) decline has been a management concern on the Oakmulgee Ranger District since the 1960's. The symptoms include sparse crowns, reduced radial growth, deterioration of fine roots, decline, and mortality of loblolly pine by age 50.

  16. 78 FR 3879 - Ochoco National Forest, Paulina Ranger District; Oregon; Fox Canyon Cluster Allotment Management...

    Science.gov (United States)

    2013-01-17

    ... Forest Service Ochoco National Forest, Paulina Ranger District; Oregon; Fox Canyon Cluster Allotment Management Plan Project EIS AGENCY: Forest Service, USDA. ACTION: Notice of intent to prepare an... Resource Management Plan (Forest Plan), as amended, and other applicable legal requirements within the...

  17. 75 FR 54085 - Divide Ranger District, Rio Grande National Forest; Colorado; Big Moose Vegetation Management...

    Science.gov (United States)

    2010-09-03

    ... Doc No: 2010-22037] DEPARTMENT OF AGRICULTURE Forest Service Divide Ranger District, Rio Grande National Forest; Colorado; Big Moose Vegetation Management Project AGENCY: Forest Service, Rio Grande National Forest, USDA. ACTION: Corrected Notice of Intent to prepare an environmental impact statement...

  18. 75 FR 9388 - Prescott National Forest, Bradshaw Ranger District; Arizona; Bradshaw Vegetation Management Project

    Science.gov (United States)

    2010-03-02

    ... Management Project AGENCY: Forest Service, USDA. ACTION: Notice of intent to prepare an environmental impact statement. SUMMARY: This project is a proposal to improve the health of fire adapted ecosystems while simultaneously reducing hazardous fuels on the Bradshaw Ranger District. The project area encompasses about 55...

  19. 76 FR 13344 - Beaver Creek Landscape Management Project, Ashland Ranger District, Custer National Forest...

    Science.gov (United States)

    2011-03-11

    ... Forest Service Beaver Creek Landscape Management Project, Ashland Ranger District, Custer National Forest... Environmental Impact Statement for the Beaver Creek Landscape Management Project in the Federal Register (75 FR... Creek Landscape Management Project was published in the Federal Register on October 15, 2010 (75 FR...

  20. 76 FR 76689 - Cibola National Forest, Mount Taylor Ranger District, NM, Mount Taylor Combined Exploratory Drilling

    Science.gov (United States)

    2011-12-08

    ... project area. The exploratory drilling in this area would be phased over the course of six years; 51 holes... drilling on the Cibola National Forest, Mount Taylor Ranger District. There are two areas identified for exploration; the Bajillos project area is approximately 2,894 acres and is located in T. 12 N, R. 8 W...

  1. 76 FR 67130 - Bridger-Teton National Forest; Big Piney Ranger District; Wyoming; Environmental Impact Statement...

    Science.gov (United States)

    2011-10-31

    .... Approximately five percent of the project area is within the DFC 12 (Backcountry Big-game Hunting, Dispersed... Forest Service Bridger-Teton National Forest; Big Piney Ranger District; Wyoming; Environmental Impact... miles northwest of Big Piney, Wyoming, and is situated on the east side of the northern end of the...

  2. 75 FR 71668 - Cibota National Forest, Mount Taylor Ranger District, NM, Roca Honda Mine

    Science.gov (United States)

    2010-11-24

    ... uranium mine at the Roca Honda claims. The purpose of the EIS is to evaluate the environmental impacts of... Forest Service Cibota National Forest, Mount Taylor Ranger District, NM, Roca Honda Mine AGENCY: Forest Service, USDA. ACTION: Notice of Intent to prepare an Environmental Impact Statement. SUMMARY: Roca Honda...

  3. 76 FR 22363 - Kaibab National Forest, Williams Ranger District; Arizona; Bill Williams Mountain Restoration...

    Science.gov (United States)

    2011-04-21

    ... best available science, the Forest Supervisor will decide: Whether to select the proposed action or one... Forest Service Kaibab National Forest, Williams Ranger District; Arizona; Bill Williams Mountain Restoration Project AGENCY: Forest Service, USDA. ACTION: Notice of intent to prepare an environmental impact...

  4. 75 FR 44936 - Ochoco National Forest, Lookout Mountain Ranger District; Oregon; Howard Elliot Johnson Fuels and...

    Science.gov (United States)

    2010-07-30

    ... [Federal Register Volume 75, Number 146 (Friday, July 30, 2010)] [Notices] [Page 44936] [FR Doc No: C1-2010-17803] DEPARTMENT OF AGRICULTURE Forest Service Ochoco National Forest, Lookout Mountain Ranger District; Oregon; Howard Elliot Johnson Fuels and Vegetation Management Project EIS Correction In...

  5. Landscape-scale fire restoration on the big piney ranger district in the Ozark highlands of Arkansas

    Science.gov (United States)

    John Andre; McRee Anderson; Douglas Zollner; Marie Melnechuk; Theo Witsell

    2009-01-01

    The Ozark-St. Francis National Forest, The Nature Conservancy (TNC), the Arkansas Natural Heritage Commission, Arkansas Forestry Commission, private landowners, and others are currently engaged in a collaborative project to restore the oak-hickory and pine-oak ecosystems of the Ozark Highlands on 60,000 acres of the Big Piney Ranger District. Frequent historical fires...

  6. 78 FR 33047 - Humboldt-Toiyabe National Forest, Carson Ranger District Mt. Rose Ski Tahoe-Atoma Area...

    Science.gov (United States)

    2013-06-03

    ... Forest Service Humboldt-Toiyabe National Forest, Carson Ranger District Mt. Rose Ski Tahoe--Atoma Area... Ski Tahoe (Mt. Rose) to expand its lift and terrain network. The project is located approximately 12.... Fax to 775-355-5399. Please use a fax cover sheet and include ``Mt. Rose Ski Tahoe--Atoma Area EIS...

  7. 75 FR 71414 - Questa Ranger District, Carson National Forest; Taos County, NM; Taos Ski Valley's 2010 Master...

    Science.gov (United States)

    2010-11-23

    ... Forest Service Questa Ranger District, Carson National Forest; Taos County, NM; Taos Ski Valley's 2010... prepare an environmental impact statement. SUMMARY: Taos Ski Valley (TSV) is a downhill ski area located... (Phase I) projects included in the Taos Ski Valley (TSV) 2010 Master Development Plan (MDP). These...

  8. 76 FR 60451 - Questa Ranger District, Carson National Forest; Taos County, NM; Taos Ski Valley's 2010 Master...

    Science.gov (United States)

    2011-09-29

    ... Forest Service Questa Ranger District, Carson National Forest; Taos County, NM; Taos Ski Valley's 2010... authorize several (Phase 1) projects included in the Taos Ski Valley (TSV) 2010 Master Development Plan (MDP... Service proposes to authorize under a separate SUP to John Cottam, the relocation of the Alpine Village...

  9. Snag densities in old-growth stands on the Gasquet Ranger District, Six Rivers National Forest, California

    Science.gov (United States)

    Thomas M. Jimerson

    1989-01-01

    Baseline levels for densities of snags (standing dead trees) wered etermined in undisturbed old-growth stands on the Gasquet Ranger District. Six Riven National Forest, California. Snag species, number, diameter at breast height (d.b.h.), height, cavity type, cavity use, decay class, and snag origin were recorded on 317 plots over a 2-year period. The 2121 snags...

  10. 75 FR 48927 - Sierra National Forest, Bass Lake Ranger District, California, Fish Camp Project

    Science.gov (United States)

    2010-08-12

    ... INFORMATION CONTACT: Mark Lemon, Interdisciplinary Team Leader, at Sierra National Forest, Bass Lake Ranger... sustain a fire) wildland urban intermix area, (3) increase the vigor and health of mixed conifer stands...

  11. Energy Efficiency, Water Efficiency, and Renewable Energy Site Assessment: San Juan National Forest - Dolores Ranger District, Colorado

    Energy Technology Data Exchange (ETDEWEB)

    Kandt, Alicen J. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Kiatreungwattana, Kosol [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2018-01-26

    This report summarizes the results from an energy efficiency, water efficiency, and renewable energy site assessment of the Dolores Ranger District in the San Juan National Forest in Colorado. A team led by the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) conducted the assessment with United States Forest Service (USFS) personnel on August 16-17, 2016, as part of ongoing efforts by USFS to reduce energy and water use and implement renewable energy technologies. The assessment is approximately an American Society of Heating, Refrigerating, and Air-Conditioning Engineers Level 2 audit and meets Energy Independence and Security Act requirements.

  12. 75 FR 21577 - Rogue River-Siskiyou National Forest, Powers Ranger District, Coos County, OR; Eden Ridge Timber...

    Science.gov (United States)

    2010-04-26

    ... natural succession processes. The residual trees would have less competition for sunlight, water and soil... DEPARTMENT OF AGRICULTURE Forest Service Rogue River-Siskiyou National Forest, Powers Ranger... growth, crown development, vigor and overall stand health, improved root strength on residual trees...

  13. 75 FR 47755 - Black Hills National Forest, Mystic Ranger District, South Dakota, Pactola Project Area

    Science.gov (United States)

    2010-08-09

    ... rules that are applicable to the public. Notices of hearings #0;and investigations, committee meetings... including forest resources from an existing insect and disease epidemic (mountain pine beetle), creating a... forest resources, from the existing insect and disease (mountain pine beetle) epidemic. Restore resource...

  14. 75 FR 78208 - Black Hills National Forest, Northern Hills Ranger District; South Dakota; Steamboat Project

    Science.gov (United States)

    2010-12-15

    ... fuels treatments to provide structural diversity in big game winter range, reduce the risk of mountain... telecommunication devices for the deaf (TDD) may call the Federal Information Relay Service (FIRS) at 1-800-877-8339... greater structural diversity in an area managed for big game winter range, to reduce the risk of mountain...

  15. 76 FR 22670 - Black Hills National Forest, Hell Canyon Ranger District, South Dakota, Vestal Project

    Science.gov (United States)

    2011-04-22

    ... potential for high severity wildfire adjacent to the at-risk community of Custer, SD. The proposal is being... the town of Custer, SD and overall fire hazard in the area is high due to dense stand conditions and... area are privately owned, with an estimated 3,194 private structures. Proposed Action Thin and harvest...

  16. 76 FR 22075 - Divide Ranger District, Rio Grande National Forest; CO; Black Mesa Vegetation Management Project

    Science.gov (United States)

    2011-04-20

    ... Vegetation Management Project AGENCY: Forest Service, USDA. ACTION: Notice of intent to prepare an... Mesa Vegetation Management Project Public Comment. FOR FURTHER INFORMATION CONTACT: Diana McGinn at 719... Management'', then ``Projects'' on the left side of the Web page. Individuals who use telecommunication...

  17. 76 FR 35396 - Black Hills National Forest, Mystic Ranger District, South Dakota, Section 30 Limestone Mining...

    Science.gov (United States)

    2011-06-17

    ... environmental impact statement. SUMMARY: A Plan of Operation has been submitted by Pete Lien and Sons, Inc., for.... The proposal is to mine within Pennington County, South Dakota, totaling approximately 100 acres about... Intent and the new estimated Final EIS publication date. DATES: The final environmental impact statement...

  18. 76 FR 65681 - Black Hills National Forest, Mystic Ranger District, South Dakota, Calumet Project Area

    Science.gov (United States)

    2011-10-24

    ... wildland-urban interface. The proposal is being planned for the 31,772 acre Calumet Project Area that... fire and fuels hazard reduction needs in the wildland-urban interface; support or opposition to forest... and in the wildland- urban interface. Moreover, it is appropriate that proposed actions be designed in...

  19. Infant Mortality: District Profiles for the Congressional Black Caucus, 102nd Congress. Report for the Congressional Black Caucus.

    Science.gov (United States)

    National Commission To Prevent Infant Mortality, Washington, DC.

    This report provides an overview of infant mortality rates in congressional districts represented by members of the Congressional Black Caucus (CBC). The 1989 or 1990 mortality rates for Blacks and Whites for the 25 districts represented by CBC members are presented, as well as rates for the overall population. An appendix provides data on Black,…

  20. Allegheny County Park Rangers Outreach

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — Launched in June 2015, the Allegheny County Park Rangers program reached over 48,000 people in its first year. Park Rangers interact with residents of all ages and...

  1. Black-tailed prairie dog management plan : Rainwater Basin Wetland Management District

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This management plan is for management of black-tailed prairie dogs on the Rainwater Basin Wetland Management District , Nebraska. A management plan is needed for...

  2. The History of the 2nd Ranger Company

    National Research Council Canada - National Science Library

    Bond, Victor

    2003-01-01

    The purpose of this research project is to uncover the history of the 2nd Ranger Company and to determine the impact segregation had on the selection, training, and combat operations of the 2nd Ranger Company...

  3. The uranium-bearing nickel-cobalt-native silver deposits in the Black Hawk district, Grant County, New Mexico

    Science.gov (United States)

    Gillerman, Elliot; Whitebread, Donald H.

    1953-01-01

    The Black Hawk (Bullard Peak) district, Grant County, N. Mex., is 21 miles by road west of Silver City. From 1881 to 1893 more than $1,000,000.00 of high-grade silver ore is reported to have been shipped from the district. Since 1893 there has been no mining in the district except during a short period in 1917 when the Black Hawk mine was rehabilitated. Pre-Cambrian quartz diorite gneiss, which contains inclusions of quartzite, schist, monzonite, and quartz monzonite, is the most widespread rock in the district. The quartz diorite gneiss is intruded by many pre-Cambrian and younger rocks, including diorite granite, diabase, monzonite porphyry and andesite and is overlain by the Upper Cretaceous Beartooth quartzite. The monzonite porphyry, probably of late Cretaceous or early Tertiary age, forms a small stock along the northwestern edge of the district and numerous dikes and irregular masses throughout the district. The ore deposits are in fissure veins that contain silver, cobalt, and uranium. The ore minerals, which include native silver, niccolite, millerite, skutterudite, nickel skutterudite, bismuthinite, pitchblende, and sphalerite, are in a carbonate gangue in narrow, persistent veins, most of which trend northeasterly. Pitchblende has been identified in the Black Hawk and the Alhabra deposits and unidentified radioactive minerals were found at five other localities. The deposits that contain the radioactive minerals constitude a belt 600 to 1,500 feet wide that trends about N. 45° E., and is approximately parallel to the southeastern boundary of the monzonite porphyry stock. All the major ore deposits are in the quartz diorite gneiss in close proximity to the monzonite porphyry. The ore deposits are similar to the deposits at Great Bear Lake, Canada, and Joachimstahl, Czechoslovakia.

  4. 1988 narrative report: Bowdoin National Wildlife Refuge, Bowdoin Wetlands Management District, Creedman Coulee, Lake Thibadeau, Black Coulee, Hewitt Lake: Annual narrative report: Calendar year 1988

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Bowdoin National Wildlife Refuge, Bowdoin Wetlands Management District, Creedman Coulee, Lake Thibadeau, Black Coulee, and Hewitt...

  5. 1984 narrative report: Bowdoin National Wildlife Refuge, Bowdoin Wetlands Management District, Creedman Coulee, Lake Thibadeau, Black Coulee, Hewitt Lake: Annual narrative report: Calendar year 1984

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Bowdoin National Wildlife Refuge, Bowdoin Wetlands Management District, Creedman Coulee, Lake Thibadeau, Black Coulee, and Hewitt...

  6. 1985 narrative report: Bowdoin National Wildlife Refuge, Bowdoin Wetlands Management District, Creedman Coulee, Lake Thibadeau, Black Coulee, Hewitt Lake: Annual narrative report: Calendar year 1985

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Bowdoin National Wildlife Refuge, Bowdoin Wetlands Management District, Creedman Coulee, Lake Thibadeau, Black Coulee, and Hewitt...

  7. 75th Ranger Regiment Nutrition Program

    Science.gov (United States)

    2008-07-15

    Siple Medical Training Culinary Advisor Warfighter Nutrition Conference USUHS, Bethesda, MD 15 JULY 2008 Report Documentation Page Form...Performance Nutrition ◘ Sports Medicine ◘ Mental Toughness The RAW Program Team Approach: Commander’s Program! • Ranger Leaders • Culinary ...training Overweight Fitness screening, staged training Previous Heat Injury Medical history and record screening Contributory Medical Issues Medical

  8. Of Power Rangers and V-Chips.

    Science.gov (United States)

    Boyatzis, Chris J.

    1997-01-01

    Describes a study of the effects of violence on elementary students which used the television program Mighty Morphin Power Rangers, and found increased aggression which parents should be concerned about. Offers suggestions for parents and teachers, including taking action against violent programming, utilizing technology which bans unwanted…

  9. The Mighty Morphin Power Rangers: Teachers Voice Concern.

    Science.gov (United States)

    Levin, Diane E.; Carlsson-Paige, Nancy

    1995-01-01

    Presents the results of a study exploring teachers' concerns and observations of how the "Power Rangers" television series affects children in their classrooms. Teachers' concerns focus on violence, aggressive play, confusion about fantasy and reality, obsessive involvement with the Power Rangers, and use of them as role models for…

  10. Learning about Real-Life Heroes: Forest Rangers.

    Science.gov (United States)

    Afflerbach, Susan; Fonville, Beth

    1995-01-01

    Suggests that when children show interest in television superheroes, build on that interest in the classroom by introducing them to real-life heroes in the community. Using forest rangers as an example, offers a variety of activities, books, and resources that can introduce children to forest rangers and the work they do to protect forest…

  11. Factors Affecting Job Satisfaction Of Rangers In Yankari Game ...

    African Journals Online (AJOL)

    The study was conducted to identify the various factors affecting the job satisfaction level of rangers in Yankari Game Reserve, Bauchi, Nigeria. Data were collected using structured questionnaire comprising four facets: personal characteristics of the rangers, job satisfaction, motivation, and work environment. Data were ...

  12. 76 FR 48120 - Black Hills National Forest, Custer, SD-Mountain Pine Beetle Response Project

    Science.gov (United States)

    2011-08-08

    ... INFORMATION CONTACT: Katie Van-Alstyne, project team leader, Black Hills National Forest, Mystic Ranger... managing the ongoing insect outbreak. Public comment will help the planning team identify key issues and...

  13. Mighty Morphin Power Ranger Play: Research and Reality.

    Science.gov (United States)

    Crosser, Sandra

    1995-01-01

    Explores the question of whether or not Mighty Morphin Power Rangers-type aggressive play is developmentally appropriate for the early childhood classroom. Compares results from research in child development to the reality of television programming, highlighting the relationship between television violence and children's aggressive behavior. (AA)

  14. Natural resources youth training program (NRYTP), resource rangers 2010

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2010-09-15

    In 2010, for a second year, the natural resources youth training program (NRYTP) was developed in northern Manitoba thanks to Manitoba Keewatinowi Okimakanak Inc. (MKO) and the collaboration of 42 sponsors. 16 aboriginal youth representing six northern communities took part in the five-week program located at the Egg Lake camp. The objective was to provide these resources rangers with knowledge and training in the most widespread resource sectors in northern Manitoba, including mining, forestry and hydropower. Trainers and experts provided by industry partners offered training sessions, hands-on work experience and other activities to help resource rangers to acquire a better understanding of the employability in this field in the northern region and the knowledge and skills the resource-based careers require. Life and professional skills training was given by the camp staff and local professionals. On-site elders and cultural events also allowed the integration of a northern Cree cultural component. Three staff members, a cook and elders assisted daily the resource rangers. Many improvements and refinements have been made since the success of the 2009 program, including the involvement of a larger number of communities, program contributors and program graduates. The program length has doubled and the number of jobs created has increased, important cultural aspects were introduced and the overall expenses were reduced.

  15. PeakRanger: A cloud-enabled peak caller for ChIP-seq data

    Directory of Open Access Journals (Sweden)

    Grossman Robert

    2011-05-01

    Full Text Available Abstract Background Chromatin immunoprecipitation (ChIP, coupled with massively parallel short-read sequencing (seq is used to probe chromatin dynamics. Although there are many algorithms to call peaks from ChIP-seq datasets, most are tuned either to handle punctate sites, such as transcriptional factor binding sites, or broad regions, such as histone modification marks; few can do both. Other algorithms are limited in their configurability, performance on large data sets, and ability to distinguish closely-spaced peaks. Results In this paper, we introduce PeakRanger, a peak caller software package that works equally well on punctate and broad sites, can resolve closely-spaced peaks, has excellent performance, and is easily customized. In addition, PeakRanger can be run in a parallel cloud computing environment to obtain extremely high performance on very large data sets. We present a series of benchmarks to evaluate PeakRanger against 10 other peak callers, and demonstrate the performance of PeakRanger on both real and synthetic data sets. We also present real world usages of PeakRanger, including peak-calling in the modENCODE project. Conclusions Compared to other peak callers tested, PeakRanger offers improved resolution in distinguishing extremely closely-spaced peaks. PeakRanger has above-average spatial accuracy in terms of identifying the precise location of binding events. PeakRanger also has excellent sensitivity and specificity in all benchmarks evaluated. In addition, PeakRanger offers significant improvements in run time when running on a single processor system, and very marked improvements when allowed to take advantage of the MapReduce parallel environment offered by a cloud computing resource. PeakRanger can be downloaded at the official site of modENCODE project: http://www.modencode.org/software/ranger/

  16. Elimination of 1994 Gender Restriction: Will Earning the Ranger Tab Achieve Full Career Potential for Women?

    Science.gov (United States)

    2013-12-13

    45 Excerpts from the Kotter Model...implementation of DADT and the DADT Repeal Act. The implementation guidance was delivered by the National Leadership to the forces through the Service Chiefs...enter the Regiment either through the Ranger Training Battlaion or after completion of Ranger School and serving in a key leadership position in a

  17. Is that Gun for the Bears? The National Park Service Ranger as a Historically Contradictory Figure

    Directory of Open Access Journals (Sweden)

    Alice B Kelly Pennaz

    2017-01-01

    Full Text Available The “Yellowstone Model” of exclusionary, or fortress conservation, has spread widely across the globe since 1872. While in many other countries there has been a concomitant ever-increasing militarisation of park guards, the history of the United States (US Park Ranger offers an alternative narrative. This paper traces the complex history of the US Park ranger through time to show how the Ranger as an outward embodiment of state power has been contradicted by administrative and practical logics directing rangers to educate, welcome, and guide park visitors. Rangers' work as territorial enforcers, and as strong-arms of the state has been tempered and defined by multiple disciplining forces over time. Using a political ecology approach, this paper examines how shifting political economic contexts, shifts in park use and park visitors, and a changing national law enforcement milieu influenced how and in what ways National Park Rangers have performed law enforcement in US parks over the past 100 years. The paper concludes by laying out why comparisons between US National Park Rangers and park guards in other parts of the world may be troubled by a number of socioeconomic and political factors.

  18. Risk factors for visual impairment and blindness amongst black adult diabetis receiving treatment at Government healthcare facilitis in Mopani District, Limpopo province, South Africa

    Directory of Open Access Journals (Sweden)

    Raymond G. Mabaso

    2014-01-01

    Full Text Available Background: Diabetes mellitus (DM is a common systemic disease amongst Black South Africans. It may lead to diabetic retinopathy (DR, a common cause of visual impairment (VI and blindness. DR may signifiantly increase the prevalence of VI and blindness.Aim: To assess risk factors for VI and blindness amongst a black diabetic South African population aged ≥ 40 years.Setting: The study was conducted in seven Government healthcare facilities (two hospitals, four clinics and one health centre in Mopani District, Limpopo province, South Africa.Methods: This was a cross-sectional health facility-based quantitative study. Structured interviews were used to obtain information, which included sociodemographic profie, knowledge about DM and its ocular complications, presence of hypertension and accessibility to health facilities. Subsequently participants were examined for VI and blindness using an autorefractor, pinhole disc, ophthalmoscope and logMAR visual acuity chart. Anthropometric measurements (height, weight and waist were also taken. Associations between 31 risk factors and VI as well as blindness were statistically examined.Results: Participants (N = 225 included 161 women and 64 men aged 40–90 years (mean 61.5 ± 10.49 years; 41.3% of them had VI and 3.6% were blind. Cataracts (76.8% and DR (7.1% were the common causes of compensated VI and blindness. Risk factors that were associated with VI and blindness were age, monthly income, compliance with losing weight and physical activity.Conclusion: Findings suggest that lifestyle intervention and appropriate eyecare programmes may reduce VI and blindness in this population.

  19. Electron-Muon Ranger: performance in the MICE Muon Beam

    CERN Document Server

    Adams, D; Vankova-Kirilova, G.; Bertoni, R.; Bonesini, M.; Chignoli, F.; Mazza, R.; Palladino, V.; de Bari, A.; Cecchet, G.; Capponi, M.; Iaciofano, A.; Orestano, D.; Pastore, F.; Tortora, L.; Kuno, Y.; Sakamoto, H.; Ishimoto, S.; Filthaut, F.; Hansen, O.M.; Ramberger, S.; Vretenar, M.; Asfandiyarov, R.; Bene, P.; Blondel, A.; Cadoux, F.; Debieux, S.; Drielsma, F.; Graulich, J.S.; Husi, C.; Karadzhov, Y.; Masciocchi, F.; Nicola, L.; Messomo, E.Noah; Rothenfusser, K.; Sandstrom, R.; Wisting, H.; Charnley, G.; Collomb, N.; Gallagher, A.; Grant, A.; Griffiths, S.; Hartnett, T.; Martlew, B.; Moss, A.; Muir, A.; Mullacrane, I.; Oates, A.; Owens, P.; Stokes, G.; Warburton, P.; White, C.; Adams, D.; Barclay, P.; Bayliss, V.; Bradshaw, T.W.; Courthold, M.; Francis, V.; Fry, L.; Hayler, T.; Hills, M.; Lintern, A.; Macwaters, C.; Nichols, A.; Preece, R.; Ricciardi, S.; Rogers, C.; Stanley, T.; Tarrant, J.; Watson, S.; Wilson, A.; Bayes, R.; Nugent, J.C.; Soler, F.J.P.; Cooke, P.; Gamet, R.; Alekou, A.; Apollonio, M.; Barber, G.; Colling, D.; Dobbs, A.; Dornan, P.; Hunt, C.; Lagrange, J-B.; Long, K.; Martyniak, J.; Middleton, S.; Pasternak, J.; Santos, E.; Savidge, T.; Uchida, M.A.; Blackmore, V.J.; Carlisle, T.; Cobb, J.H.; Lau, W.; Rayner, M.A.; Tunnell, C.D.; Booth, C.N.; Hodgson, P.; Langlands, J.; Nicholson, R.; Overton, E.; Robinson, M.; Smith, P.J.; Dick, A.; Ronald, K.; Speirs, D.; Whyte, C.G.; Young, A.; Boyd, S.; Franchini, P.; Greis, J.; Pidcott, C.; Taylor, I.; Gardener, R.; Kyberd, P.; Littlefield, M.; Nebrensky, J.J.; Bross, A.D.; Fitzpatrick, T.; Leonova, M.; Moretti, A.; Neuffer, D.; Popovic, M.; Rubinov, P.; Rucinski, R.; Roberts, T.J.; Bowring, D.; DeMello, A.; Gourlay, S.; Li, D.; Prestemon, S.; Virostek, S.; Zisman, M.; Hanlet, P.; Kafka, G.; Kaplan, D.M.; Rajaram, D.; Snopok, P.; Torun, Y.; Blot, S.; Kim, Y.K.; Bravar, U.; Onel, Y.; Cremaldi, L.M.; Hart, T.L.; Luo, T.; Sanders, D.A.; Summers, D.J.; Cline, D.; Yang, X.; Coney, L.; Hanson, G.G.; Heidt, C.

    2015-01-01

    The Muon Ionization Cooling Experiment (MICE) will perform a detailed study of ionization cooling to evaluate the feasibility of the technique. To carry out this program, MICE requires an efficient particle-identification (PID) system to identify muons. The Electron-Muon Ranger (EMR) is a fully-active tracking-calorimeter that forms part of the PID system and tags muons that traverse the cooling channel without decaying. The detector is capable of identifying electrons with an efficiency of 98.6%, providing a purity for the MICE beam that exceeds 99.8%. The EMR also proved to be a powerful tool for the reconstruction of muon momenta in the range 100-280 MeV/$c$.

  20. Electron-Muon Ranger: performance in the MICE Muon Beam

    CERN Document Server

    Adams, D.; Vankova-Kirilova, G.; Bertoni, R.; Bonesini, M.; Chignoli, F.; Mazza, R.; Palladino, V.; de Bari, A.; Cecchet, G.; Capponi, M.; Iaciofano, A.; Orestano, D.; Pastore, F.; Tortora, L.; Kuno, Y.; Sakamoto, H.; Ishimoto, S.; Filthaut, F.; Hansen, O.M.; Ramberger, S.; Vretenar, M.; Asfandiyarov, R.; Bene, P.; Blondel, A.; Cadoux, F.; Debieux, S.; Drielsma, F.; Graulich, J.S.; Husi, C.; Karadzhov, Y.; Masciocchi, F.; Nicola, L.; Messomo, E.Noah; Rothenfusser, K.; Sandstrom, R.; Wisting, H.; Charnley, G.; Collomb, N.; Gallagher, A.; Grant, A.; Griffiths, S.; Hartnett, T.; Martlew, B.; Moss, A.; Muir, A.; Mullacrane, I.; Oates, A.; Owens, P.; Stokes, G.; Warburton, P.; White, C.; Adams, D.; Barclay, P.; Bayliss, V.; Bradshaw, T.W.; Courthold, M.; Francis, V.; Fry, L.; Hayler, T.; Hills, M.; Lintern, A.; Macwaters, C.; Nichols, A.; Preece, R.; Ricciardi, S.; Rogers, C.; Stanley, T.; Tarrant, J.; Watson, S.; Wilson, A.; Bayes, R.; Nugent, J.C.; Soler, F.J.P.; Cooke, P.; Gamet, R.; Alekou, A.; Apollonio, M.; Barber, G.; Colling, D.; Dobbs, A.; Dornan, P.; Hunt, C.; Lagrange, J-B.; Long, K.; Martyniak, J.; Middleton, S.; Pasternak, J.; Santos, E.; Savidge, T.; Uchida, M.A.; Blackmore, V.J.; Carlisle, T.; Cobb, J.H.; Lau, W.; Rayner, M.A.; Tunnell, C.D.; Booth, C.N.; Hodgson, P.; Langlands, J.; Nicholson, R.; Overton, E.; Robinson, M.; Smith, P.J.; Dick, A.; Ronald, K.; Speirs, D.; Whyte, C.G.; Young, A.; Boyd, S.; Franchini, P.; Greis, J.; Pidcott, C.; Taylor, I.; Gardener, R.; Kyberd, P.; Littlefield, M.; Nebrensky, J.J.; Bross, A.D.; Fitzpatrick, T.; Leonova, M.; Moretti, A.; Neuffer, D.; Popovic, M.; Rubinov, P.; Rucinski, R.; Roberts, T.J.; Bowring, D.; DeMello, A.; Gourlay, S.; Li, D.; Prestemon, S.; Virostek, S.; Zisman, M.; Hanlet, P.; Kafka, G.; Kaplan, D.M.; Rajaram, D.; Snopok, P.; Torun, Y.; Blot, S.; Kim, Y.K.; Bravar, U.; Onel, Y.; Cremaldi, L.M.; Hart, T.L.; Luo, T.; Sanders, D.A.; Summers, D.J.; Cline, D.; Yang, X.; Coney, L.; Hanson, G.G.; Heidt, C.

    2015-12-16

    The Muon Ionization Cooling Experiment (MICE) will perform a detailed study of ionization cooling to evaluate the feasibility of the technique. To carry out this program, MICE requires an efficient particle-identification (PID) system to identify muons. The Electron-Muon Ranger (EMR) is a fully-active tracking-calorimeter that forms part of the PID system and tags muons that traverse the cooling channel without decaying. The detector is capable of identifying electrons with an efficiency of 98.6%, providing a purity for the MICE beam that exceeds 99.8%. The EMR also proved to be a powerful tool for the reconstruction of muon momenta in the range 100-280 MeV/$c$.

  1. Are ranger patrols effective in reducing poaching-related threats within protected areas?

    Science.gov (United States)

    Moore, Jennnifer F.; Mulindahabi, Felix; Masozera, Michel K.; Nichols, James; Hines, James; Turikunkiko, Ezechiel; Oli, Madan K.

    2018-01-01

    Poaching is one of the greatest threats to wildlife conservation world-wide. However, the spatial and temporal patterns of poaching activities within protected areas, and the effectiveness of ranger patrols and ranger posts in mitigating these threats, are relatively unknown.We used 10 years (2006–2015) of ranger-based monitoring data and dynamic multi-season occupancy models to quantify poaching-related threats, to examine factors influencing the spatio-temporal dynamics of these threats and to test the efficiency of management actions to combat poaching in Nyungwe National Park (NNP), Rwanda.The probability of occurrence of poaching-related threats was highest at lower elevations (1,801–2,200 m), especially in areas that were close to roads and tourist trails; conversely, occurrence probability was lowest at high elevation sites (2,601–3,000 m), and near the park boundary and ranger posts. The number of ranger patrols substantially increased the probability that poaching-related threats disappear at a site if threats were originally present (i.e. probability of extinction of threats). Without ranger visits, the annual probability of extinction of poaching-related threats was an estimated 7%; this probability would increase to 20% and 57% with 20 and 50 ranger visits per year, respectively.Our results suggest that poaching-related threats can be effectively reduced in NNP by adding ranger posts in areas where they do not currently exist, and by increasing the number of patrols to sites where the probability of poaching activities is high.Synthesis and applications. Our application of dynamic occupancy models to predict the probability of presence of poaching-related threats is novel, and explicitly considers imperfect detection of illegal activities. Based on the modelled relationships, we identify areas that are most vulnerable to poaching, and offer insights regarding how ranger patrols can be optimally deployed to reduce poaching-related threats and

  2. Conservation′s Ambiguities: Rangers on the Periphery of the W Park, Burkina Faso

    OpenAIRE

    Julie Poppe

    2012-01-01

    This article demonstrates the central role of ambiguity in the (re)production process of conservation practice. It argues that some current political economy as well as environmentality approaches to research conservation practice fail to capture the complexity of the lived experience of local conservationists. The article focuses on the multiple identities of rangers in interaction with other residents at the periphery of the W Park in Burkina Faso, as rangers are local conservationists who ...

  3. Park Rangers' Behaviors and Their Effects on Tourists and Tibetan Macaques (Macaca thibetana) at Mt. Huangshan, China.

    Science.gov (United States)

    Usui, Rie; Sheeran, Lori K; Li, Jin-Hua; Sun, Lixing; Wang, Xi; Pritchard, Alexander J; DuVall-Lash, Alexander S; Wagner, R Steve

    2014-09-15

    Previous studies have reported the negative impacts of tourism on nonhuman primates (NHPs) and tourists and advocated the improvement of tourism management, yet what constitutes good quality management remains unclear. We explored whether rates of macaque aggression and self-directed behaviors (SDBs) differed under the supervision of two park ranger teams at the Valley of the Wild Monkeys (VWM) in Mt. Huangshan, Anhui Province, China. The two ranger teams provisioned and managed a group of macaques on an alternating monthly basis. Monkey, tourist and ranger behaviors were collected from August 16-September 30, 2012. Macaque aggression and SDB rates did not differ significantly under the management of the two teams. Overall, there was little intervention in tourist-macaque interactions by park rangers, and even when rangers discouraged tourists' undesirable behaviors, tourist interactions with monkeys persisted. Furthermore, only one or sometimes two park rangers managed monkeys and tourists, and rangers established dominance over the monkeys to control them. In order to effectively manage tourists and monkeys by a single park ranger, we recommend that rangers: (1) prohibit tourists from feeding; (2) move around the viewing platform more frequently; and (3) limit the number of tourists each visiting session.

  4. The Cossack Ranger II Seismograph, Research And Outreach Efforts.

    Science.gov (United States)

    Husebye, E. S.; Fedorenko, Y. V.; Pilgaev, S. V.; Matveeva, T. S.

    2006-12-01

    geoscience disciplines. Another project novelety is that the seismographs (Cossack Ranger II) would be assembled in Bulgaria thus ensuring low prices and local maintenance skills. SENSES will also introduce electronic learning modules for instructions at school levels on earthquake risks and hazard mitigations. This appears to be a most efficient way of informing the public at large about various types of natural hazards. In this presentations, we give details on the geophoned based seismograph Codssack Ranger II, record analysis, seismic processing scheme in a high school environment and the most difficult part promote geoscience for high school students.

  5. Autonomous Navigation with Constrained Consistency for C-Ranger

    Directory of Open Access Journals (Sweden)

    Shujing Zhang

    2014-06-01

    Full Text Available Autonomous underwater vehicles (AUVs have become the most widely used tools for undertaking complex exploration tasks in marine environments. Their synthetic ability to carry out localization autonomously and build an environmental map concurrently, in other words, simultaneous localization and mapping (SLAM, are considered to be pivotal requirements for AUVs to have truly autonomous navigation. However, the consistency problem of the SLAM system has been greatly ignored during the past decades. In this paper, a consistency constrained extended Kalman filter (EKF SLAM algorithm, applying the idea of local consistency, is proposed and applied to the autonomous navigation of the C-Ranger AUV, which is developed as our experimental platform. The concept of local consistency (LC is introduced after an explicit theoretical derivation of the EKF-SLAM system. Then, we present a locally consistency-constrained EKF-SLAM design, LC-EKF, in which the landmark estimates used for linearization are fixed at the beginning of each local time period, rather than evaluated at the latest landmark estimates. Finally, our proposed LC-EKF algorithm is experimentally verified, both in simulations and sea trials. The experimental results show that the LC-EKF performs well with regard to consistency, accuracy and computational efficiency.

  6. 77 FR 66578 - San Bernardino National Forest, Mountaintop Ranger District, CA, Santa Ana Watershed Hazardous...

    Science.gov (United States)

    2012-11-06

    ...., tree regeneration layers, snags) and horizontal (e.g., downed woody material) heterogeneity. There is a... sensitive resources (e.g., heritage resources, rare plants, riparian areas, designated Critical Habitat, etc... around adjacent communities. The proposed action also includes reforestation/native plant restoration in...

  7. 78 FR 45495 - Conejos Peak Ranger District, Rio Grande National Forest; Colorado; Cumbres Vegetation Management...

    Science.gov (United States)

    2013-07-29

    ... potential to damage public or private propert y as they fall; (3) Re-plant portions of harvested s t ands to... existing regeneration and where aspen sprouting is unlikely, in order to maintain diverse forest cover over...

  8. 75 FR 31418 - Intermountain Region, Payette National Forest, Council Ranger District; Idaho; Mill Creek-Council...

    Science.gov (United States)

    2010-06-03

    ... large diameter ponderosa pine) and road construction have affected forest, grassland, shrubland plant... biomass on 700 acres by regeneration harvest treatments followed by prescribed burning to promote fire...

  9. Tongass National Forest Transportation System Opportunity Study : Final Report for Hoonah and Wrangell Ranger Districts.

    Science.gov (United States)

    2008-07-01

    Tongass National Forest (NF) is in Southeast Alaska, a region rich in natural and cultural resources, which is currently undergoing significant economic change. This study examines how the existing assets of the Tongass NF's transportation system can...

  10. 77 FR 17007 - Kootenai National Forest, Cabinet Ranger District, Montana Pilgrim Timber Sale Project

    Science.gov (United States)

    2012-03-23

    ... age class structure, via use of timber harvesting and prescribed fire use. Big game forage would be... managed for big game summer range. Subsequent analyses of potential environmental effects were documented... the deaf (TDD) may call the Federal Information Relay Service (FIRS) at 1-800-877-8339 between 8 a.m...

  11. 75 FR 64243 - Umatilla National Forest, Walla Walla Ranger District; Oregon Tollgate Fuels Reduction Project

    Science.gov (United States)

    2010-10-19

    ...) trees and dead and down material. These activities would occur adjacent to private property and FR 64... permit, 4 NFS campgrounds, 6 trailheads, 1 ski area, 4 snowparks and other FS facilities. The area is one... reduction prescriptions include crown reduction, dead and down material removal, and ladder fuel reduction...

  12. 77 FR 59163 - Andrew Pickens Ranger District; South Carolina; AP Loblolly Pine Removal and Restoration Project

    Science.gov (United States)

    2012-09-26

    ... initial post-harvest prescribed burn to reduce competition. These methods would be applied up to two more... treatment and the miles of system and temporary roads based on better mapping and additional field survey... column, correct the ``Proposed Action'', heading to read: Regeneration Harvest, With Reserves (Cut-and...

  13. 76 FR 31932 - Beaverhead-Deerlodge National Forest, Pintler Ranger District; Montana; Flint Foothills...

    Science.gov (United States)

    2011-06-02

    ... pine and harvest post and poles on 863 acres, commercial thin ponderosa pine and Douglas-fir on 1,007... ranging in size from two to 196 acres. Harvest and treatment methods would include ground-based and cable... INFORMATION: Purpose and Need for Action The purpose and need for the proposal is to (1) salvage harvest dead...

  14. 77 FR 14727 - Tongass National Forest Wrangell Ranger District; Alaska; Wrangell Island Project Environmental...

    Science.gov (United States)

    2012-03-13

    ... would be used as needed. Harvest would include helicopter, ground based, and cable-yarding systems and... treatments, erosion control, fish passage improvements. Other activities may include recreation enhancements...-growth management, road and access management, economic and rural stability, wildlife habitat, aquatic...

  15. 75 FR 81210 - Wrangell Ranger District; Alaska; Wrangell Island Project Environmental Impact Statement

    Science.gov (United States)

    2010-12-27

    ... include helicopter, ground based, and cable-yarding systems and include even-aged and uneven-aged harvest..., erosion control, vegetation removal, or road relocation); recreation activities (for example, campground... transition from old-growth harvest to young-growth management, road management, economic and rural stability...

  16. 76 FR 7807 - Thorne Bay Ranger District; Alaska; Big Thorne Project Environmental Impact Statement

    Science.gov (United States)

    2011-02-11

    ... would be used as needed. Harvest would include helicopter, ground- based, and cable yarding systems and... ``red pipes'' or bridges, erosion control, vegetation removal, or road relocation); recreation... young-growth management, road management, economic and rural stability, subsistence, deer, watersheds...

  17. 75 FR 10456 - Kootenai National Forest, Fortine Ranger District, Montana; Galton Environmental Impact Statement

    Science.gov (United States)

    2010-03-08

    ...) Designate mountain bike use that is compatible with the Montana Wilderness Study Act; (5) Designate allowed... safety. Proposed Action The Proposed Action would result in a year round travel plan for the Galton..., mountain bikes and over-snow vehicles. Comment Requested This notice of intent initiates the scoping...

  18. 78 FR 20613 - Ochoco National Forest, Paulina Ranger District; Oregon; Wolf Creek Vegetation and Fuels...

    Science.gov (United States)

    2013-04-05

    ... analyze the effects of managing vegetation and fuels within the 24,506 acre Wolf project area, which is... INFORMATION CONTACT: Jeffrey Marszal, Project Leader at 3160 NE Third Street, Prineville, Oregon 97754, or at...

  19. 78 FR 49722 - Tongass National Forest Wrangell Ranger District; Alaska; Wrangell Island Project Environmental...

    Science.gov (United States)

    2013-08-15

    ... managment. Preliminary Permits, Licenses or Other Requirements U.S. Environmental Protection Agency: Spill... review under Section 402 of the Clean Water Act (402); Solid Waste Disposal Permit. State of Alaska...

  20. 76 FR 9740 - Plumas National Forest, Feather River Ranger District; California; On Top Hazardous Fuels...

    Science.gov (United States)

    2011-02-22

    ... species and to move the landscape towards an uneven-aged, multistory, fire-resilient forest. Prescriptions would treat surface, ladder, and crown fuels to reduce risk from wildfires to rural communities and...; underburning 3,020 acres (800 acres underburn only and 2,220 acres follow-up underburn for mechanically thinned...

  1. 77 FR 21721 - Sierra National Forest, Bass Lake Ranger District, California, Whisky Ecosystem Restoration Project

    Science.gov (United States)

    2012-04-11

    ... intensity of wildfires within and outside of the Wildland Urban Interface (WUI) and restore other ecological... fire) wildland urban intermix area, and surrounding forest by reducing the potential for... management to prevent and control infestations of noxious weeds; Restore production and enhance vitality of...

  2. 77 FR 10472 - San Bernardino National Forest, Mountaintop Ranger District, California, Mitsubishi South Quarry...

    Science.gov (United States)

    2012-02-22

    ..., ECORP Consulting, Inc. 215 N. 5th Street, Redlands, CA 92374. Comments may also be sent via email to... sloped inward toward the vertical wall to capture any precipitation or runoff. The individual benches... lands, which have been verified by the Forest Service to contain occupied endangered species habitat on...

  3. 75 FR 32738 - Gallatin National Forest-Hebgen Lake Ranger District; MT; Lonesome Wood Vegetation Management...

    Science.gov (United States)

    2010-06-09

    ....us , or via facsimile to 406-587-2528. Electronic comments must be submitted in Microsoft Word format... of fire spread and long spotting distances for firebrands are expected under the existing conditions...

  4. 76 FR 41753 - Sierra National Forest, Bass Lake Ranger District, California, Grey's Mountain Ecosystem...

    Science.gov (United States)

    2011-07-15

    ... completed utilizing thinning of pre-commercial and commercial conifers, mastication and/or dozer piling and... deficit for wildlife habitat use. Potential methods to achieve this desired level of CWD includes falling...

  5. 76 FR 4860 - Ochoco National Forest, Lookout Mountain Ranger District; Oregon; Marks Creek Allotment...

    Science.gov (United States)

    2011-01-27

    ... livestock stocking rates, active management of livestock, relocation or reconstruction of existing water..., fisheries, water quality, sensitive plants, and on the introduction and/or spread of invasive plants, as...

  6. 75 FR 18144 - Kemmerer Ranger District, Bridger-Teton National Forest, Wyoming Kemmerer Grazing and Rangeland...

    Science.gov (United States)

    2010-04-09

    ... identified. Grazing practices addressing frequency of grazing and of rest from grazing will be guided by the... such as amount of ground cover, sign of active erosion and healing of headcuts. Other Best Management...

  7. 77 FR 23658 - Six Rivers National Forest, Gasquet Ranger District, California, The Smith River National...

    Science.gov (United States)

    2012-04-20

    ... Smith River National Recreation Area Restoration and Motorized Travel Management Project AGENCY: Forest... minimizing ecological and cultural resource risk. In addition, this project restores terrestrial and aquatic... unauthorized routes (UAR) that pose a risk to ecological resources will be restored to reduce risk to resources...

  8. 75 FR 8297 - Tongass National Forest, Thorne Bay Ranger District, Thorne Bay, AK

    Science.gov (United States)

    2010-02-24

    ..., USDA. ACTION: Cancellation of Notice of intent to prepare an Environmental Impact Statement published... prepare Kosciusko Island Timber Sale Environmental Impact Statement (EIS) to assess and disclose the environmental effects of timber harvest and road building to provide timber for the Tongass National Forest...

  9. 76 FR 71935 - Humboldt-Toiyabe National Forest, Carson Ranger District, Nevada and California, Bordertown to...

    Science.gov (United States)

    2011-11-21

    ... for the construction, operation, and maintenance of the Bordertown 120 kV transmission line on..., Bordertown to California 120 kV Transmission Line AGENCY: Forest Service, USDA. ACTION: Notice of intent to... determine and analyze the effects of the proposed Bordertown 120 kilovolt (kV) Transmission Line project on...

  10. 78 FR 15681 - Beaverhead-Deerlodge National Forest, Dillon Ranger District; Montana; Birch, Willow, Lost Project

    Science.gov (United States)

    2013-03-12

    ... would be treated through mechanical, commercial, burning, lop and scattering, and/or mastication. A total of 3,440 acres of Douglas-Fir would be treated through commercial thin, mastication, and/or... mastication. A total of 6,292 acres of Shrub-Grasslands would be treated through lop and scatter, burning...

  11. 76 FR 54730 - Rubicon Trail Easement, Eldorado National Forest, Pacific Ranger District

    Science.gov (United States)

    2011-09-02

    ... erosion and sedimentation. In July 2004, the El Dorado County Board of Supervisors issued a state of local... facilities along the Rubicon Trail at Spider Lake or Buck Island Reservoir primitive camping areas. Once in...

  12. 77 FR 36251 - Intermountain Region, Boise National Forest; Emmett Ranger District, Idaho; Scriver Creek...

    Science.gov (United States)

    2012-06-18

    ..., Boise National Forest at the address above. Individuals who use telecommunication devices for the deaf.... Environmental Protection Agency. Early notice of importance of public participation in subsequent environmental...

  13. 78 FR 12714 - Intermountain Region, Payette National Forest, New Meadows Ranger District, Idaho; Lost Creek...

    Science.gov (United States)

    2013-02-25

    ... resiliency; (3) reduce the risk of uncharacteristic and undesirable wildland fire; (4) restore habitat... rerouting trails, installing trail signs, installing toilets, improving and constructing trailhead parking... comment, will become part of the public record for this proposed action. Comments submitted anonymously...

  14. Council Districts

    Data.gov (United States)

    Town of Cary, North Carolina — View the location of the Town of Cary’s four Town Council districts.Please note that one district, District A, is split into two geo-spatial areas. One area is in...

  15. Microprocessor realizations of range and range-rate filters in radar systems

    Science.gov (United States)

    Fleischer, D.; Aronhime, P.

    1980-01-01

    This paper describes the implementation of digital radar range-rate filters on a microprocessor-based system. A range-rate filter processes a digitized noisy range signal to recover smoothed range data and its derivative, range rate. Two filter designs are implemented. Considerations aiding their efficient operation on an 8-bit microprocessor are discussed. The filters are subjected to a noisy range input signal of known variance, and the associated output signals are statistically analysed to determine noise-rejection characteristics. These results are compared to analytical predictions.

  16. A Comparison of the Perceptions of the Characteristics of Teachers by Black and White Secondary School Students in an Urban School District.

    Science.gov (United States)

    Sizemore, Robert W.

    Teachers may fail with junior high school age and black students because these groups differ from their senior high school age and white counterparts in their perceptions of which teacher behaviors are important. To test this hypothesis, black and white ninth and twelfth graders were asked to select their three best and three worst teachers and…

  17. Conservation′s Ambiguities: Rangers on the Periphery of the W Park, Burkina Faso

    Directory of Open Access Journals (Sweden)

    Julie Poppe

    2012-01-01

    Full Text Available This article demonstrates the central role of ambiguity in the (reproduction process of conservation practice. It argues that some current political economy as well as environmentality approaches to research conservation practice fail to capture the complexity of the lived experience of local conservationists. The article focuses on the multiple identities of rangers in interaction with other residents at the periphery of the W Park in Burkina Faso, as rangers are local conservationists who simultaneously submit to and produce conservation practices. Park rangers are village men who are recruited under the banner of community participation in conservation projects and state forestry. On a day-to-day basis, these rangers help the foresters with the management of the natural resources on the one hand, and guide tourists, especially in the hunting concessions, on the other. They occupy ambiguous positions at the crossroads of conservationist, state, political, economic, spiritual, social, and cultural practices, inherent to their conservation occupations at the lowest echelon, where residents have to transform conservation policies into practices. It is precisely this ambiguity that turns out to ensure the conservation implementation.

  18. View invariant gesture recognition using the CSEMSwissRanger SR-2 camera

    DEFF Research Database (Denmark)

    Holte, Michael Boelstoft; Moeslund, Thomas B.; Fihl, Preben

    2008-01-01

    This paper introduces the use of range information acquired by a CSEM SwissRanger SR-2 camera for view invariant recognition of one and two arms gestures. The range data enables motion detection and 3D representation of gestures. Motion is detected by double difference range images and filtered...

  19. Trace-element and multi-isotope geochemistry of Late-Archean black shales in the Carajas iron-ore district, Brazil

    DEFF Research Database (Denmark)

    Cabral, A. R.; Creaser, R. A.; Naegler, T.

    2013-01-01

    The 250-300-m-thick Carajas Formation in the Carajas mineral province, northern Brazil, consists of banded iron formation (including giant high-grade iron-ore deposits) and minor black shale, overlying a thick pile (2-3 km) of about 2.75-Ga-old metabasalt. Carbonaceous shale with pyrite-and locally...

  20. High Precision Ranging and Range-Rate Measurements over Free-Space-Laser Communication Link

    Science.gov (United States)

    Yang, Guangning; Lu, Wei; Krainak, Michael; Sun, Xiaoli

    2016-01-01

    We present a high-precision ranging and range-rate measurement system via an optical-ranging or combined ranging-communication link. A complete bench-top optical communication system was built. It included a ground terminal and a space terminal. Ranging and range rate tests were conducted in two configurations. In the communication configuration with 622 data rate, we achieved a two-way range-rate error of 2 microns/s, or a modified Allan deviation of 9 x 10 (exp -15) with 10 second averaging time. Ranging and range-rate as a function of Bit Error Rate of the communication link is reported. They are not sensitive to the link error rate. In the single-frequency amplitude modulation mode, we report a two-way range rate error of 0.8 microns/s, or a modified Allan deviation of 2.6 x 10 (exp -15) with 10 second averaging time. We identified the major noise sources in the current system as the transmitter modulation injected noise and receiver electronics generated noise. A new improved system will be constructed to further improve the system performance for both operating modes.

  1. RangerMaster{trademark}: Real-time pattern recognition software for in-field analysis of radiation sources

    Energy Technology Data Exchange (ETDEWEB)

    Murray, W.S. [Los Alamos National Lab., NM (United States); Ziemba, F.; Szluk, N. [Quantrad Sensor, Inc., Santa Clara, CA (United States)

    1998-12-31

    RangerMaster{trademark} is the embedded firmware for Quantrad Sensor`s integrated nuclear instrument package, the Ranger{trademark}. The Ranger{trademark}, which is both a gamma-ray and neutron detection system, was originally developed at Los Alamos National Laboratory for in situ surveys at the Plutonium Facility to confirm the presence of nuclear materials. The new RangerMaster{trademark} software expands the library of isotopes and simplifies the operation of the instrument by providing an easy mode suitable for untrained operators. The expanded library of the Ranger{trademark} now includes medical isotopes {sup 99}Tc, {sup 201}Tl, {sup 111}In, {sup 67}Ga, {sup 133}Xe, {sup 103}Pa, and {sup 131}I; industrial isotopes {sup 241}Am, {sup 57}Co, {sup 133}Ba, {sup 137}Cs, {sup 40}K, {sup 60}Co, {sup 232}Th, {sup 226}Ra, and {sup 207}Bi; and nuclear materials {sup 235}U, {sup 238}U, {sup 233}U, and {sup 239}Pu. To accomplish isotopic identification, a simulated spectrum for each of the isotopes was generated using SYNTH. The SYNTH spectra formed the basis for the knowledge-based expert system and selection of the regions of interest that are used in the pattern recognition system. The knowledge-based pattern recognition system was tested against actual spectra under field conditions.

  2. Chemical evolution of pyrite at the Kopylovsky and Kavkaz black shale-hosted gold deposits, Bodaybo district, Russia: Evidence from EPMA and LA-ICP-MS data

    Science.gov (United States)

    Palenova, E. E.; Belogub, E. V.; Plotinskaya, O. Yu.; Novoselov, K. A.; Maslennikov, V. V.; Kotlyarov, V. A.; Blinov, I. A.; Kuzmenko, A. A.; Griboedova, I. G.

    2015-01-01

    The Kopylovsky and Kavkaz gold deposits in the Artemovskiy ore cluster, Bodaybo district, hosted in terrigenous carbonaceous sequence of the Dogaldyn formation of the Upper Proterozoic Bodaybo group, are localized in cores of high-order anticlines. These deposits contain gold-sulfide and gold-sulfide-quartz ore types. Pyrite is the predominant ore mineral; copper, zinc, nickel, and cobalt sulfides are minor. Native gold is found as free grains, and inclusions and ultrafine stingers in pyrite. A few morphological varieties of pyrite are identified: (1) framboidal and fine-grained pyrite resulting from sedimentation and diagenesis; (2) fine-grained subhedral to euhedral pyrite corresponding to catagenesis, metamorphism, and dynamometamorphism; and (3) coarse-crystalline euhedral gold-free pyrite occurring in the host rocks beyond ore bodies and deposits. According to electron microprobe and LA-ICP-MS data, the contents of Au, Ag, Co, Pb, Sb, Bi, Ba, Mo, and Tl decrease from sedimentary-diagenetic to metamorphic pyrite, while Ni, Cu, As, Se and especially U contents increase in the same direction. Primary gold is suggested to have accumulated during sedimentation as species associated with carbonaceous matter and cogenetic pyrite and redeposited as a result of catagenesis and metamorphism as native species with crystallization of the latest pyrite and associated sulfides of base metals.

  3. Spatiotemporal trends of illegal activities from ranger-collected data in a Ugandan national park.

    Science.gov (United States)

    Critchlow, R; Plumptre, A J; Driciru, M; Rwetsiba, A; Stokes, E J; Tumwesigye, C; Wanyama, F; Beale, C M

    2015-10-01

    Within protected areas, biodiversity loss is often a consequence of illegal resource use. Understanding the patterns and extent of illegal activities is therefore essential for effective law enforcement and prevention of biodiversity declines. We used extensive data, commonly collected by ranger patrols in many protected areas, and Bayesian hierarchical models to identify drivers, trends, and distribution of multiple illegal activities within the Queen Elizabeth Conservation Area (QECA), Uganda. Encroachment (e.g., by pastoralists with cattle) and poaching of noncommercial animals (e.g., snaring bushmeat) were the most prevalent illegal activities within the QECA. Illegal activities occurred in different areas of the QECA. Poaching of noncommercial animals was most widely distributed within the national park. Overall, ecological covariates, although significant, were not useful predictors for occurrence of illegal activities. Instead, the location of illegal activities in previous years was more important. There were significant increases in encroachment and noncommercial plant harvesting (nontimber products) during the study period (1999-2012). We also found significant spatiotemporal variation in the occurrence of all activities. Our results show the need to explicitly model ranger patrol effort to reduce biases from existing uncorrected or capture per unit effort analyses. Prioritization of ranger patrol strategies is needed to target illegal activities; these strategies are determined by protected area managers, and therefore changes at a site-level can be implemented quickly. These strategies should also be informed by the location of past occurrences of illegal activity: the most useful predictor of future events. However, because spatial and temporal changes in illegal activities occurred, regular patrols throughout the protected area, even in areas of low occurrence, are also required. © 2015 Society for Conservation Biology.

  4. Black to Black

    DEFF Research Database (Denmark)

    Langkjær, Michael Alexander

    2012-01-01

    , menace, sensual spur, and associations with death along with an assertive presence is seen with black-clad pop performers. This becomes especially clear when comparing the distinctive stage-styles of Siouxsie Sioux (born 1957, UK) and Janelle Monáe (born 1985, USA). Siouxsie Sioux’s late 1970’s black......Pop musicians performing in black stage costume take advantage of cultural traditions relating to matters black. Stylistically, black is a paradoxical color: although a symbol of melancholy, pessimism, and renunciation, black also expresses minimalist modernity and signifies exclusivity (as...... is hinted by Rudyard Kipling’s illustration of ‘The [Black] Cat That Walked by Himself’ in his classic children’s tale). It was well understood by uniformed Anarchists, Fascists and the SS that there is an assertive presence connected with the black-clad figure. The paradox of black’s abstract elegance...

  5. Fisheries Districts

    Data.gov (United States)

    Vermont Center for Geographic Information — The Fisheries districts data layer is part of a larger dataset that contains administrative boundaries for Vermont's Agency of Natural Resources. The dataset...

  6. Warden Districts

    Data.gov (United States)

    Vermont Center for Geographic Information — This dataset is a representation overlay of warden (areas of responsibility). The Vermont Warden Districts layer is part of a dataset that contains administrative...

  7. Forestry Districts

    Data.gov (United States)

    Vermont Center for Geographic Information — The Forestry Districts layer is part of a dataset that contains administrative boundaries for Vermont's Agency of Natural Resources. This is a layer file which...

  8. Wastewater Districts

    Data.gov (United States)

    Vermont Center for Geographic Information — The Wastewater districts layer is part of a larger dataset that contains administrative boundaries for Vermont's Agency of Natural Resources. The dataset includes...

  9. Park Districts

    Data.gov (United States)

    Vermont Center for Geographic Information — The Parks Districts layer is part of a dataset contains administrative boundaries for Vermont's Agency of Natural Resources. The dataset includes feature classes for...

  10. Wildlife Districts

    Data.gov (United States)

    Vermont Center for Geographic Information — The Wildlife Districts layer is part of a larger dataset contains administrative boundaries for Vermont's Agency of Natural Resources. The dataset includes feature...

  11. Congressional Districts

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This layer depicts the 114th Congressional Districts for the United States. Found within this layer is the listing of the 114th House of Representatives. Elected to...

  12. Analysis of GRACE Range-rate Residuals with Emphasis on Reprocessed Star-Camera Datasets

    Science.gov (United States)

    Goswami, S.; Flury, J.; Naeimi, M.; Bandikova, T.; Guerr, T. M.; Klinger, B.

    2015-12-01

    Since March 2002 the two GRACE satellites orbit the Earth at rela-tively low altitude. Determination of the gravity field of the Earth including itstemporal variations from the satellites' orbits and the inter-satellite measure-ments is the goal of the mission. Yet, the time-variable gravity signal has notbeen fully exploited. This can be seen better in the computed post-fit range-rateresiduals. The errors reflected in the range-rate residuals are due to the differ-ent sources as systematic errors, mismodelling errors and tone errors. Here, weanalyse the effect of three different star-camera data sets on the post-fit range-rate residuals. On the one hand, we consider the available attitude data andon other hand we take the two different data sets which has been reprocessedat Institute of Geodesy, Hannover and Institute of Theoretical Geodesy andSatellite Geodesy, TU Graz Austria respectively. Then the differences in therange-rate residuals computed from different attitude dataset are analyzed inthis study. Details will be given and results will be discussed.

  13. Ranger© - An Affordable, Advanced, Next-Generation, Dual-Pol, X-Band Weather Radar

    Science.gov (United States)

    Stedronsky, Richard

    2014-05-01

    The Enterprise Electronics Corporation (EEC) Ranger© system is a new generation, X-band (3 cm), Adaptive Polarization Doppler Weather Surveillance Radar that fills the gap between high-cost, high-power traditional radar systems and the passive ground station weather sensors. Developed in partnership with the University of Oklahoma Advanced Radar Research Center (ARRC), the system uses relatively low power solid-state transmitters and pulse compression technology to attain nearly the same performance capabilities of much more expensive traditional radar systems. The Ranger© also employs Adaptive Dual Polarization (ADP) techniques to allow Alternating or Simultaneous Dual Polarization capability with total control over the transmission polarization state using dual independent coherent transmitters. Ranger© has been designed using the very latest technology available in the industry and the technical and manufacturing experience gained through over four decades of successful radar system design and production at EEC. The entire Ranger© design concept emphasizes precision, stability, reliability, and value using proven solid state technology combined with the most advanced motion control system ever conceived for weather radar. Key applications include meteorology, hydrology, aviation, offshore oil/gas drilling, wind energy, and outdoor event situational awareness.

  14. 77 FR 4757 - Ochoco National Forest, Lookout Mountain Ranger District; Oregon; McKay Fuels and Vegetation...

    Science.gov (United States)

    2012-01-31

    ... habitat where it occurs in the project area. Soil Productivity. Maintenance of soil productivity is an..., soil can become displaced and compacted, which can impact productivity. Water Quality. The main streams... extremely labor- intensive and the Forest Service depends on these markets to pay for the work that is...

  15. 77 FR 36994 - Questa Ranger District, Carson National Forest; Taos County, NM; Taos Ski Valley's 2010 Master...

    Science.gov (United States)

    2012-06-20

    ... National Forest; Taos County, NM; Taos Ski Valley's 2010 Master Development Plan--Phase 1 Projects... included in the Taos Ski Valley (TSV) 2010 Master Development Plan (MDP). All proposed projects would be..., Taos Ski Valley MDP--Phase 1 Projects, 208 Cruz Alta Road, Taos, NM 87571. Comments may also be sent...

  16. 77 FR 2508 - Rogue River-Siskiyou National Forest, Powers Ranger District, Coos County, OR; Eden Ridge Timber...

    Science.gov (United States)

    2012-01-18

    ... seventy-five (75) treatment units would be designed for timber harvest with associated harvest systems... woody debris would be retained where feasible to maintain or improve forest diversity. Post- treatment... variable density thinning treatments designed to control stocking and maintain or improve overall forest...

  17. 75 FR 1587 - Medford-Park Falls Ranger District, Chequamegon-Nicolet National Forest, Park Falls Hardwoods...

    Science.gov (United States)

    2010-01-12

    ... introduced insect that has the potential to devastate all native ash species similar to what occurred to the... the existing trees to encourage regeneration of an understory, to encourage age-class development, or.... Scoping Process This notice of intent initiates the scoping process, which guides the development of the...

  18. 75 FR 19936 - Medicine Bow-Routt National Forests, Brush Creek/Hayden Ranger District Saratoga, WY

    Science.gov (United States)

    2010-04-16

    ..., deadfall in beetle-kill areas has the potential to slow or prevent forest regeneration; negatively impact... products; promote forest regeneration; reduce hazard trees from high priority areas affecting public safety; improve recreational facilities and opportunities; improve wildlife habitat diversity; repair soil and...

  19. 78 FR 4377 - Idaho Panhandle National Forests, Coeur d'Alene River Ranger District, Shoshone County, ID...

    Science.gov (United States)

    2013-01-22

    ... activities included in the proposed action are road storage, road reconstruction and maintenance, site... standards, improve the abundance of fisheries and other aquatic organisms, and improve the longevity of road... activities included in the proposed action are road storage, road reconstruction and maintenance, site...

  20. 76 FR 2878 - Six Rivers National Forest, Mad River Ranger District, CA; Buck Mountain Vegetation and Fuel...

    Science.gov (United States)

    2011-01-18

    ... Endangered Species Act requires consultation with the United States National Marine Fisheries Service (NMFS... work closely with this agency through the fisheries biologist to fulfill consultation requirements for... trails, and landings, activity fuel treatments, and road maintenance/minor reconstruction along haul...

  1. 77 FR 27013 - Ketchikan-Misty Fiords Ranger District; Tongass National Forest; Alaska; Saddle Lakes Timber Sale...

    Science.gov (United States)

    2012-05-08

    ... operators, and value-added wood product industries in Southeast Alaska who contribute to the local and... and facilitate a sustainable wood product industry. Proposed Action The proposed action would harvest... desired conditions of the Forest Plan, and to facilitate the transition to a sustainable wood product...

  2. 77 FR 26733 - Uinta-Wasatch-Cache National Forest; Evanston-Mountain View Ranger District; Utah; Smiths Fork...

    Science.gov (United States)

    2012-05-07

    ... Highway 150, Suite A, Evanston, Wyoming. In addition, comments can be submitted electronically to... effects of tree mortality associated with the mountain pine beetle epidemic to restore healthy ecological...

  3. 75 FR 5941 - Umatilla National Forest, Walla Walla Ranger District, Walla Walla, WA; Cobbler II Timber Sale...

    Science.gov (United States)

    2010-02-05

    ... would be treated in harvest units. Treatments would include mechanical mastication, grapple piling, hand... sensitive species remaining after harvest. Mastication would be used to treat both activity fuels and...

  4. Case Study: Mobile Photovoltaic System at Bechler Meadows Ranger Station, Yellowstone National Park

    Energy Technology Data Exchange (ETDEWEB)

    Andy Walker

    2014-03-05

    The mobile PV/generator hybrid system deployed at Bechler Meadows provides a number of advantages. It reduces on-site air emissions from the generator. Batteries allow the generator to operate only at its rated power, reducing run-time and fuel consumption. Energy provided by the solar array reduces fuel consumption and run-time of the generator. The generator is off for most hours providing peace and quiet at the site. Maintenance trips from Mammoth Hot Springs to the remote site are reduced. The frequency of intrusive fuel deliveries to the pristine site is reduced. And the system gives rangers a chance to interpret Green Park values to the visiting public. As an added bonus, the system provides all these benefits at a lower cost than the basecase of using only a propane-fueled generator, reducing life cycle cost by about 26%.

  5. Case Study: Mobile Photovoltaic System at Bechler Meadows Ranger Station, Yellowstone National Park (Brochure)

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2014-03-01

    The mobile PV/generator hybrid system deployed at Bechler Meadows provides a number of advantages. It reduces on-site air emissions from the generator. Batteries allow the generator to operate only at its rated power, reducing run-time and fuel consumption. Energy provided by the solar array reduces fuel consumption and run-time of the generator. The generator is off for most hours providing peace and quiet at the site. Maintenance trips from Mammoth Hot Springs to the remote site are reduced. The frequency of intrusive fuel deliveries to the pristine site is reduced. And the system gives rangers a chance to interpret Green Park values to the visiting public. As an added bonus, the system provides all these benefits at a lower cost than the basecase of using only a propane-fueled generator, reducing life cycle cost by about 26%.

  6. 77 FR 14360 - Environmental Impacts Statements; Notice of Availability

    Science.gov (United States)

    2012-03-09

    ..., Section 30 Limestone Mining Project, Proposal to Implement Mining Actions, Mystic Ranger District, Black... Operation of a 737 mile Pipeline to Transport Supply of Natural Gas and Natural Gas Liquids from Alaska's...

  7. BIODIVERSITY OF BLUE GREEN ALGAE FROM SATARA DISTRICT (M.S.)

    OpenAIRE

    Kamble Priyadarshani,; Sharda Ghadge; C. T. Karande; V. C. Karande

    2014-01-01

    Satara district is located in Western Ghats of Maharashtra. The district occupies 10,480 km2area. The district includes 11 administrative tahasils viz., Satara, Karad, Patan, Jaoli, Wai, Mahabaleshwar, Phaltan, Maan, Khatav, Koregaon, Khandala. Entire district falls within Deccan trap area, however the common soil types are the black, loamy and clay. Some western part of district enjoys average annual rainfall exceeding 500 mm while eastern side has the rainfall less than 300 mm. These variat...

  8. Government Districts, Other, Voting districts, fire districts, inspector districts, engineering districts, school zones, recreation leagues, Published in 2014, Not Applicable scale, City of Huntsville Government.

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Government Districts, Other dataset current as of 2014. Voting districts, fire districts, inspector districts, engineering districts, school zones, recreation leagues.

  9. Six-Month Results From the Initial Randomized Study of the Ranger Paclitaxel-Coated Balloon in the Femoropopliteal Segment.

    Science.gov (United States)

    Bausback, Yvonne; Willfort-Ehringer, Andrea; Sievert, Horst; Geist, Volker; Lichtenberg, Michael; Del Giudice, Costantino; Sauguet, Antoine; Diaz-Cartelle, Juan; Marx, Claudia; Ströbel, Armin; Schult, Ingolf; Scheinert, Dierk

    2017-08-01

    To evaluate the performance of the Ranger paclitaxel-coated balloon vs uncoated balloon angioplasty for femoropopliteal lesions. Between January 2014 and October 2015, the prospective, randomized RANGER SFA study ( ClinicalTrials.gov identifier NCT02013193) enrolled 105 patients with symptomatic lower limb ischemia (Rutherford category 2-4) and stenotic lesions in the nonstented femoropopliteal segment at 10 European centers. Seventy-one patients (mean age 68±8 years; 53 men) were enrolled in the Ranger drug-coated balloon (DCB) arm and 34 patients (mean age 67±9 years; 23 men) were assigned to the control group. Six-month analysis included angiographic late lumen loss and safety and clinical outcomes assessments. Baseline characteristics of the DCB and control groups were similar, as were lesion lengths (68±46 vs 60±48 mm; p=0.731), severity of calcification (p=0.236), and the prevalence of occlusions (34% vs 34%; p>0.999). At 6 months, late lumen loss was significantly less for the DCB group vs controls (-0.16±0.99 vs 0.76±1.4; p=0.002). The DCB group had significantly greater freedom from binary restenosis (92% vs 64%; p=0.005) and primary patency rates (87% vs 60%; p=0.014). Target lesion revascularization rates were 5.6% in the DCB group and 12% in the control group (p=0.475). No target limb amputations or device-related deaths occurred in either group. Six-month results suggest that Ranger DCB treatment effectively inhibited restenosis in symptomatic femoropopliteal disease, resulting in improved vessel patency and a low revascularization rate in the short term compared with uncoated balloon angioplasty.

  10. Monitoring species of mammals using track collection by rangers in the Tilarán mountain range, Costa Rica

    OpenAIRE

    Arévalo, J. Edgardo; Méndez, Yoryineth; Vargas, Sergio

    2015-01-01

    Although monitoring of animal populations for informed decision making is fundamental for the conservation and management of biodiversity, monitoring programs are not widely implemented. In addition, monitoring plans often represent an economic burden for many conservation organizations. Here we report on the monitoring of five focal species of mammals in the Tilarán mountain range, Costa Rica. We used a participatory approach in which trained rangers of four institutions conducted trail surv...

  11. Black Culture

    Science.gov (United States)

    Brown, Angela Khristin

    2013-01-01

    The migration of blacks in North America through slavery became united. The population of blacks passed down a tradition of artist through art to native born citizens. The art tradition involved telling stories to each generation in black families. The black culture elevated by tradition created hope to determine their personal freedom to escape…

  12. Black Alcoholism.

    Science.gov (United States)

    Watts, Thomas D.; Wright, Roosevelt

    1988-01-01

    Examines some aspects of the problem of alcoholism among Blacks, asserting that Black alcoholism can best be considered in an ecological, environmental, sociocultural, and public health context. Notes need for further research on alcoholism among Blacks and for action to reduce the problem of Black alcoholism. (NB)

  13. Autonomous Navigation Based on SEIF with Consistency Constraint for C-Ranger AUV

    Directory of Open Access Journals (Sweden)

    Yue Shen

    2015-01-01

    Full Text Available An autonomous underwater vehicle (AUV has to solve two essential problems in underwater environment, namely, localization and mapping. SLAM is one novel solution to estimate locations and maps simultaneously based on motion models and sensor measurements. Sparse extended information filter (SEIF is an effective algorithm to reduce storage and computational costs of large-scale maps in the SLAM problem. However, there exists the inconsistency in the SEIF since the rank of the observability matrix of linearized error-state model in SLAM system is higher than that of the nonlinear SLAM system. By analyzing the consistency of the SEIF-based SLAM from the perspective of observability, a SLAM based on SEIF with consistency constraint (SEIF-CC SLAM is developed to improve the estimator’s consistency. The proposed algorithm uses the first-ever available estimates to calculate SEIF Jacobians for each of the state variables, called the First Estimates Jacobian (FEJ. Then, the linearized error-state model can keep the same observability as the underlying nonlinear SLAM system. The capability of autonomous navigation with the proposed algorithm is validated through simulations experiments and sea trials for a C-Ranger AUV. Experimental results show that the proposed SEIF-CC SLAM algorithm yields more consistent and accurate estimates compared with the SEIF-based SLAM.

  14. Black Saturn

    OpenAIRE

    Elvang, Henriette; Figueras, Pau

    2007-01-01

    Using the inverse scattering method we construct an exact stationary asymptotically flat 4+1-dimensional vacuum solution describing Black Saturn: a spherical black hole surrounded by a black ring. Angular momentum keeps the configuration in equilibrium. Black saturn reveals a number of interesting gravitational phenomena: (1) The balanced solution exhibits 2-fold continuous non-uniqueness for fixed mass and angular momentum; (2) Remarkably, the 4+1d Schwarzschild black hole is not unique, sin...

  15. Descendants of "Ruth:" Black Girls Coping through the "Black Male Crisis"

    Science.gov (United States)

    Brown, Ayanna F.

    2011-01-01

    This article presents the complex relationship between how black male and female identities have been constructed dichotomously in response to the gender framed "crisis" in black America. The ethnographic research study was conducted in an secondary African American History course, located in an urban school district in the southern…

  16. 36 CFR 28.3 - Boundaries: The Community Development District; The Dune District; The Seashore District.

    Science.gov (United States)

    2010-07-01

    ... Development District; The Dune District; The Seashore District. 28.3 Section 28.3 Parks, Forests, and Public... General Provisions § 28.3 Boundaries: The Community Development District; The Dune District; The Seashore... Community Development District, the Seashore District, and the Dune District. (b) The Community Development...

  17. A quantum inspired model of radar range and range-rate measurements with applications to weak value measurements

    Science.gov (United States)

    Escalante, George

    2017-05-01

    Weak Value Measurements (WVMs) with pre- and post-selected quantum mechanical ensembles were proposed by Aharonov, Albert, and Vaidman in 1988 and have found numerous applications in both theoretical and applied physics. In the field of precision metrology, WVM techniques have been demonstrated and proven valuable as a means to shift, amplify, and detect signals and to make precise measurements of small effects in both quantum and classical systems, including: particle spin, the Spin-Hall effect of light, optical beam deflections, frequency shifts, field gradients, and many others. In principal, WVM amplification techniques are also possible in radar and could be a valuable tool for precision measurements. However, relatively limited research has been done in this area. This article presents a quantum-inspired model of radar range and range-rate measurements of arbitrary strength, including standard and pre- and post-selected measurements. The model is used to extend WVM amplification theory to radar, with the receive filter performing the post-selection role. It is shown that the description of range and range-rate measurements based on the quantum-mechanical measurement model and formalism produces the same results as the conventional approach used in radar based on signal processing and filtering of the reflected signal at the radar receiver. Numerical simulation results using simple point scatterrer configurations are presented, applying the quantum-inspired model of radar range and range-rate measurements that occur in the weak measurement regime. Potential applications and benefits of the quantum inspired approach to radar measurements are presented, including improved range and Doppler measurement resolution.

  18. "The Discipline Stop": Black Male Teachers and the Politics of Urban School Discipline

    Science.gov (United States)

    Brockenbrough, Ed

    2015-01-01

    Calls for the recruitment and retention of more Black male teachers have unfolded amid popular depictions of Black men as patriarchal disciplinarians. Against that backdrop, this article investigates how 11 Black male teachers were positioned as disciplinary agents in a predominantly Black urban school district on the east coast of the United…

  19. Black Psyllium

    Science.gov (United States)

    Black psyllium is a weed that grows aggressively throughout the world. The plant was spread with the colonization of ... make medicine. Be careful not to confuse black psyllium with other forms of psyllium including blond psyllium. ...

  20. Black Tea

    Science.gov (United States)

    ... of black tea is LIKELY SAFE for most adults. Drinking too much black tea, such as more than ... reduce some of the heart health benefits of drinking tea. Milk might bind with the antioxidants in tea and ...

  1. An Investigation of the Ranger V-770-8 Engine Installation for the Edo XOSE-1 Airplane I : Cooling

    Science.gov (United States)

    Emmons, M. Arnold; Conway, Robert N.

    1945-01-01

    Engine temperature data and cooling correlating analyses of the engine and oil cooler are presented in connection with an investigation of the cowling and cooling of the ranger V-770-8 engine installation in the Edo XOSE-1 airplane. Three types of baffles were installed in the course of the tests: the conventional, the turbulent-flow, and the NACA diffuser baffles. Each of the types was of merit in cooling a different region on the cylinder. Incorporation of the best features of the three types into one baffle, a method which appears to be feasible, would provide improvements in cylinder cooling.

  2. Quadrinhos nacionais no ciberespaço: uma análise de Combo Ranger nos âmbitos digital e impresso

    OpenAIRE

    SANTOS, Roberto Elísio dos; Corrêa,Victor Wanderley

    2014-01-01

    O presente artigo trata das estratégias adotadas para a criação das histórias em quadrinhos para a internet, e tem como objeto de estudo Combo Rangers. As semelhanças e diferenças entre sua versão impressa e a virtual são analisadas neste texto. A escolha dessa história se deve por Combo Rangers ter sido a história em quadrinhos brasileira pioneira a ser realizada em ambas as maneiras, impressa, e vendida em bancas e livrarias, e disponibilizada no ambiente virtual, com acesso gratuito. Th...

  3. 78 FR 76100 - Newspapers Used for Publication of Legal Notices for Pre-Decisional Administrative Review...

    Science.gov (United States)

    2013-12-16

    ... National Forest Forest Supervisor decisions Whitman District Ranger decisions Baker City Herald, Baker City... Ranger decisions The Register Guard, Eugene, Oregon Detroit District Ranger decisions Statesman Journal..., Chehalis, Washington Mt. Baker-Snoqualmie National Forest Forest Supervisor decisions Darrington District...

  4. 77 FR 51513 - Lawrence County Resource Advisory Committee

    Science.gov (United States)

    2012-08-24

    .... FOR FURTHER INFORMATION CONTACT: Rhonda O'Byrne, District Ranger, Northern Hills Ranger District, 605...'Byrne, District Ranger, 2014 N. Main, Spearfish, SD 57783, or by email to [email protected] , or via...

  5. 78 FR 58049 - Proposed Establishment of the Adelaida District, Creston District, El Pomar District, Paso Robles...

    Science.gov (United States)

    2013-09-20

    ... District, San Juan Creek, San Miguel District, Santa Margarita Ranch, and Templeton Gap District... Robles Willow Creek District, San Juan Creek, San Miguel District, Santa Margarita Ranch, and Templeton... Creek, San Miguel District, Santa Margarita Ranch, and Templeton Gap District viticultural areas within...

  6. VT School Districts

    Data.gov (United States)

    Vermont Center for Geographic Information — (Link to Metadata) Vermont School Districts and one Interstate School District. Part of data sets which model Vermont's education system governance boudaries for...

  7. Lieutenant Chief Warden Districts

    Data.gov (United States)

    Vermont Center for Geographic Information — This dataset is a representation overlay of Lieutenant Chief Warden Districts (areas of responsibility). The Vermont Lieutenant Chief Warden Districts layer is part...

  8. California Political Districts

    Data.gov (United States)

    California Department of Resources — This is a series of district layers pertaining to California'spolitical districts, that are derived from the California State Senateand State Assembly information....

  9. National Register Historic Districts

    Data.gov (United States)

    Iowa State University GIS Support and Research Facility — The National Register Historic District layer is a shape file showing the boundaries of Historic Districts that are listed on the National Register of Historic Places.

  10. Legislative Districts - 1990

    Data.gov (United States)

    Kansas Data Access and Support Center — Each coverage contains a COVER-ID field that defines the House or Senate district number. Kansas House and Senate districts were created by the Legislative Research...

  11. State Water Districts

    Data.gov (United States)

    California Department of Resources — State Water Project District boundaries are areas where state contracts provide water to the district in California. This database is designed as a regions polygon...

  12. Private Water Districts

    Data.gov (United States)

    California Department of Resources — Private Water District boundaries are areas where private contracts provide water to the district in California. This database is designed as a regions polygon...

  13. Black Culture

    Directory of Open Access Journals (Sweden)

    Angela Khristin Brown

    2013-07-01

    Full Text Available The migration of blacks in North America through slavery became united.  The population of blacks past downs a tradition of artist through art to native born citizens. The art tradition involved telling stories to each generation in black families. The black culture elevated by tradition created hope to determine their personal freedom to escape from poverty of enslavement and to establish a way of life through tradition. A way of personal freedoms was through getting a good education that lead to a better foundation and a better way of life.

  14. Diagnostic pitfalls in a young Romanian ranger with an acute psychotic episode

    Directory of Open Access Journals (Sweden)

    Nagy EE

    2016-05-01

    Full Text Available Elöd Ernö Nagy,1,2 Attila Rácz,3 Edit Urbán,4 Gabriella Terhes,4 Timea Berki,5 Emöke Horváth,6 Anca M Georgescu,7 Iringó E Zaharia-Kézdi71Department of Pharmaceutical Biochemistry, University of Medicine and Pharmacy of Târgu-Mureş, 2Laboratory of Medical Analysis, Mures Clinical County Hospital, 3II. Psychiatry Clinic, Mures Clinical County Hospital, Târgu Mureş, Romania; 4Faculty of Medicine, Institute of Clinical Microbiology, University of Szeged, Szeged, 5Faculty of Medicine, Institute of Immunology and Biotechnology, University of Pécs, Pécs, Hungary; 6Department of Pathology, 7I. Clinic of Infectious Disease, University of Medicine and Pharmacy, Târgu Mureş, RomaniaAbstract: The identification and distinction of the pathological conditions underlying acute psychosis are often challenging. We present the case of a 35-year-old ranger who had no history of acute or chronic infectious disease or any previous neuropsychiatric symptoms. He arrived at the Psychiatry Clinic and was admitted as an emergency case, displaying bizarre behavior, hallucinations, paranoid ideation, and delusional faults. These symptoms had first appeared 7 days earlier. An objective examination revealed abnormalities of behavior, anxiety, visual hallucinations, choreiform, and tic-like facial movements. After the administration of neuroleptic and antidepressant treatment, he showed an initial improvement, but on day 10 entered into a severe catatonic state with signs of meningeal irritation and was transferred to the intensive care unit. An electroencephalogram showed diffuse irritative changes, raising the possibility of encephalitis. Taking into consideration the overt occupational risk, Borrelia antibody tests were prescribed and highly positive immunoglobulin (IgM and IgG titers were obtained from serum, along with IgG and antibody index positivity in cerebrospinal fluid. In parallel, anti-N-methyl-D-aspartate receptor antibodies and a whole

  15. Historically Black

    OpenAIRE

    Pennington, Whitney

    2012-01-01

    Historically Black is a short documentary that looks at recruitment of non-black students at Texas Southern University, one of the nation’s largest Historically Black Colleges and Universities (HBCUs). By chronicling Texas Southern’s efforts to diversify and its impact on the campus community, the film explores the changing role of HBCUs in post-segregated America and addresses what this might mean for the future of these deep-rooted institutions. 

  16. Black Superintendents of Selected American Cities.

    Science.gov (United States)

    Negro History Bulletin, 1980

    1980-01-01

    Presents photographs of 12 Black superintendents of urban school districts. They are: J. Jerome Harris, Ronald Lewis, Willie W. Herenton, Robert R. Wheeler, Alonzo A. Crim, Roland N. Patterson, Jean Franklin Emmons, Charles R. Thomas, Richard C. Hunter, Arthur Jefferson, Ulysses Byas, and Howard E. White, Sr. (GC)

  17. Black Cohosh

    Science.gov (United States)

    ... symptoms of liver trouble, such as abdominal pain, dark urine, or jaundice, while taking black cohosh should ... hard-of-hearing callers): 1-866-464-3615 Web site: nccih.nih.gov E-mail: info@nccih. ...

  18. Acceptability of a Mobile Smartphone Application Intervention to Improve Access to HIV Prevention and Care Services for Black Men Who Have Sex with Men in the District of Columbia.

    Science.gov (United States)

    Levy, Matthew E; Watson, Christopher Chauncey; Wilton, Leo; Criss, Vittoria; Kuo, Irene; Glick, Sara Nelson; Brewer, Russell A; Magnus, Manya

    Eliminating racial HIV disparities among men who have sex with men (MSM) will require a greater uptake of HIV prevention and care interventions among Black MSM (BMSM), yet such strategies generally require meaningful engagement in a health care system that often does not meet the unique needs of BMSM. This study assessed the acceptability of, and correlates of having favorable perceptions of, a mobile smartphone application (app) intervention for BMSM that aims to remove structural barriers and improve access to culturally relevant HIV prevention and care services. An Internet-based sample of 93 BMSM completed an online survey on their perceptions of the app using 14 items measured on a 100-point visual analogue scale that were validated in exploratory factor analysis (alpha=0.95). Among the sample, perceptions of two sample app modules were generally favorable and most BMSM agreed that they would use the modules (81.2% and 87.1%). Correlates of having favorable perceptions included trusting medical advice from social networks, lacking private health insurance, and not having accessed a primary care physician in the last year. Our findings warrant the further development of this app and point to subgroups of BMSM for which it may have the greatest impact.

  19. Acceptability of a mobile smartphone application intervention to improve access to HIV prevention and care services for black men who have sex with men in the District of Columbia

    Directory of Open Access Journals (Sweden)

    Matthew E. Levy

    2015-10-01

    Full Text Available Eliminating racial HIV disparities among men who have sex with men (MSM will require a greater uptake of HIV prevention and care interventions among Black MSM (BMSM, yet such strategies generally require meaningful engagement in a health care system that often does not meet the unique needs of BMSM. This study assessed the acceptability of, and correlates of having favorable perceptions of, a mobile smartphone application (app intervention for BMSM that aims to remove structural barriers and improve access to culturally relevant HIV prevention and care services. An Internet-based sample of 93 BMSM completed an online survey on their perceptions of the app using 14 items measured on a 100-point visual analogue scale that were validated in exploratory factor analysis (alpha=0.95. Among the sample, perceptions of two sample app modules were generally favorable and most BMSM agreed that they would use the modules (81.2% and 87.1%. Correlates of having favorable perceptions included trusting medical advice from social networks, lacking private health insurance, and not having accessed a primary care physician in the last year. Our findings warrant the further development of this app and point to subgroups of BMSM for which it may have the greatest impact.

  20. Developing management guidelines that balance cattle and timber production with ecological interests in the Black Hills of South Dakota

    Science.gov (United States)

    Chowanski, Kurt M.

    forage production estimates for the region. These changes in forest cover have large implications for forage production in the Black Hills. Over the 15 year period, mean tree cover decreased in 181 pastures in the Mystic Ranger District by 17.6 +/- 0.6%, and there was a corresponding 15.5 +/- 0.6% increase in mean forage production. Third, I conducted a 2 -year field experiment in the Black Hills, SD to study the relationships between management practices such as livestock stocking rates, grazing pressure, and timber harvest history, and aspects of resource condition such as tree regeneration, forage production, and plant community composition. From 2014-2015, I visited 44 pastures across a spectrum of management practices and measured seedling regeneration (590 plots), plant species richness (393 plots), primary production (246 plots), and visual obstruction (120 transects). I found that cattle grazing did not affect ponderosa pine regeneration. Grazing did affect plant diversity, and I found the highest plant diversity in areas of moderate grazing pressure. This work suggests that moderate stocking rates should have no effect on the timber industry but could positively affect native plant diversity. In the conclusion, I summarize what I learned from the literature review, mapping exercise, and field study and provide some management recommendations based on this work. Overall, I found that updated forage production estimates based on satellite imagery, and using grazing pressure index (GPI) to identify optimal stocking rates are tools that can facilitate management of livestock and timber production in the Black Hills, SD.

  1. Experimental comparison of performances of Mega Acer Kit, Ranger and ThermoSens according to flow rates and distances.

    Science.gov (United States)

    Seo, Hong Ju; Kim, Sang Hun; An, Tae Hun; Kim, Dong Joon

    2017-02-07

    We experimentally investigated the fluid warming performances of three warmers with different technology, according to flow rates and distances. We used the following intravenous fluid warmers: Mega Acer Kit (Group M, n = 8), Ranger (group R, n = 8), and ThermoSens (group T, n = 8). Fluids that had been stored in the operating room over the previous 24 h were delivered at sequent flow rates of from 440 mL/h up to 2500 mL/h through preheated warming devices. The fluid temperatures were recorded at the inlet point, 76-cm proximal (Pout1) and 166-cm distal outlet points (Pout2) every 1 min for 10 min. We repeated each test eight times. The delivered fluid temperature [mean (95% confidence interval)] was significantly higher in group M than group R and T at flow rates up to 650 mL/h with the highest value at 440 mL/h [34.30 (33.35-35.24)°C] (P flow rates over 1140 mL/h at Pout1 [36.67 (36.62-36.73)°C and 37.85 (37.52-38.17)°C at 2500 mL/h, respectively] (P flow rates for each device (P flow rates. Furthermore, the device performance is more effective with shorter extension lines.

  2. FPGA Implementation of an Amplitude-Modulated Continuous-Wave Ultrasonic Ranger Using Restructured Phase-Locking Scheme

    Directory of Open Access Journals (Sweden)

    P. Sumathi

    2010-01-01

    Full Text Available An accurate ultrasonic range finder employing Sliding Discrete Fourier Transform (SDFT based restructured phase-locked loop (RPLL, which is an improved version of the recently proposed integrated phase-locking scheme (IPLL, has been expounded. This range finder principally utilizes amplitude-modulated ultrasonic waves assisted by an infrared (IR pilot signal. The phase shift between the envelope of the reference IR pilot signal and that of the received ultrasonic signal is proportional to the range. The extracted envelopes are filtered by SDFT without introducing any additional phase shift. A new RPLL is described in which the phase error is driven to zero using the quadrature signal derived from the SDFT. Further, the quadrature signal is reinforced by another cosine signal derived from a lookup table (LUT. The pulse frequency of the numerically controlled oscillator (NCO is extremely accurate, enabling fine tuning of the SDFT and RPLL also improves the lock time for the 50 Hz input signal to 0.04 s. The percentage phase error for the range 0.6 m to 6 m is about 0.2%. The VHDL codes generated for the various signal processing steps were downloaded into a Cyclone FPGA chip around which the ultrasonic ranger had been built.

  3. Progresso da sigatoka-negra (Mycosphaerella fijiensis em bananeiras após a emissão do cacho no Município de Cáceres, Mato Grosso-Brasil Progress of black sigatoka (Mycosphaerella fijiensis in banana plants after the bunch emergence in the district of Cáceres, Mato-Grosso-Brazil

    Directory of Open Access Journals (Sweden)

    Márcia Benedita Martins

    2007-09-01

    Full Text Available A sigatoka-negra, causada pelo fungo Mycosphaerella fijiensis, pode causar 100% de perdas na produção das cultivares suscetíveis. O objetivo deste trabalho foi avaliar o progresso da sigatoka-negra em bananeiras após a emissão do cacho no Município de Cáceres, Mato Grosso. O experimento foi conduzido no período de fevereiro a dezembro de 2004 em plantios das cultivares Grande Naine, Maçã e Farta Velhaco, sendo esta última uma cultivar de plátano, do grupo Terra. As avaliações foram efetuadas a intervalos de 15 dias, quantificando-se, através de uma escala diagramática, a severidade da sigatoka-negra em todas as folhas de 5 plantas de cada cultivar, marcadas logo após a emissão das inflorescências. A partir dos dados coletados no campo, computaram-se: a severidade da doença na folha n.º 10 e o número de folhas viáveis. Considerou-se como folha viável as folhas sadias e aquelas com até 15% de área foliar lesionada. Os dados de temperatura e da umidade relativa foram registrados por um aparelho eletrônico instalado na área. A precipitação pluvial foi registrada na Estação meteorológica de Cáceres, distante 12 km do experimento. As condições climáticas foram favoráveis à sigatoka negra durante o ano todo e as plantas das cultivares Grande Naine, Maçã e Farta Velhaco após a emissão do cacho, perderam totalmente as folhas antes dos frutos atingirem o pleno desenvolvimento, cujos prejuízos no primeiro semestre atingiram 100% de perdas na produção comercializável.The black sigatoka, caused by Mycosphaerella fijiensis may cause 100% of yield losses in susceptible cultivars. The objective of this work was to evaluate the progress of the black sigatoka in banana plants after the bunch emergence, in the district of Cáceres, Mato Grosso State - Brazil. The experiment was carried out from February to December 2004, in banana cultivars "Grande Naine" and "Maçã", as well as plantain cultivar Farta Velhaco (Terra

  4. Groundwater Managment Districts

    Data.gov (United States)

    Kansas Data Access and Support Center — This dataset outlines the location of the five Groundwater Management Districts in Kansas. GMDs are locally formed and elected boards for regional groundwater...

  5. 115th Congressional Districts

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This layer depicts the 115th Congressional Districts for the United States, with attributes listing the elected officials for the 115th Congress. Elected to a...

  6. Allegheny County Council Districts

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This dataset portrays the boundaries of the County Council Districts in Allegheny County. The dataset is based on municipal boundaries and City of Pittsburgh ward...

  7. Solid Waste Management Districts

    Data.gov (United States)

    Vermont Center for Geographic Information — The Solid waste management districts layer is part of a dataset that contains administrative boundaries for Vermont's Agency of Natural Resources. This dataset...

  8. NM School District Boundaries

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The dataset represents the boundaries of all public school districts in the state of New Mexico. The source for the data layer is the New Mexico Public Education...

  9. Floodplain District Permit

    Data.gov (United States)

    Montgomery County of Maryland — The purpose of a Floodplain District Permit (FPDP) is to control floodplain development in order to protect persons and property from danger and destruction and to...

  10. NM Property Tax Districts

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This layer represents boundaries for New Mexico tax district "OUT" categories and incorporated/municipal "IN" categories as identified on the "Certificate of Tax...

  11. ACT250 Districts

    Data.gov (United States)

    Vermont Center for Geographic Information — The ACT 250 Districts layer is part of a larger dataset that contains administrative boundaries for Vermont's Agency of Natural Resources. The dataset includes...

  12. Quantum black holes

    CERN Document Server

    Calmet, Xavier; Winstanley, Elizabeth

    2014-01-01

    Written by foremost experts, this short book gives a clear description of the physics of quantum black holes. The reader will learn about quantum black holes in four and higher dimensions, primordial black holes, the production of black holes in high energy particle collisions, Hawking radiation, black holes in models of low scale quantum gravity and quantum gravitational aspects of black holes.

  13. Hamilton district energy project

    Energy Technology Data Exchange (ETDEWEB)

    Marsales, D. [Hamilton Community Energy, ON (Canada)

    2002-07-01

    This presentation began with a description of the Hamilton District Energy Project. A piping distribution system delivers the energy. For those buildings located in the close vicinity of the central energy centre, heating and cooling are provided. The Hamilton City Hall, the Copps Coliseum, and a host of other buildings located downtown are included in this project. Both the proximity to the energy centre and the pipe infrastructure are important components for the delivery of the energy. A natural gas burning engine is part of the energy centre. Direct waste is minimized since waste exhaust is used to heat water. Individual energy transfer systems, much smaller than the equipment being replaced, are used for each building connected to the district energy network. All emission requirements are met by district heating, which is a reliable source of energy and more efficient. There are instances where only more efficient energy solutions are available to a municipality when renewable energy sources are not feasible. figs.

  14. Economic resources of the northern Black Hills

    Science.gov (United States)

    Irving, J.D.; Emmons, S.F.; Jaggar, T.A.

    1904-01-01

    The mining district of the Black Hills comprised within the Spearfish and Sturgis quadrangles was surveyed geologically in the summers of 1898 and 1899 under the direction of Mr. S. F. Emmons. The following pages present a brief summary of the geologic features, more especially with reference to ore-bearing formations. These are confined to the Algonkian and Paleozoic strata and their associated eruptives. 

  15. Empowerment Zones and Enterprise Districts - MDC_CommunityDevelopmentDistrict

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Community Development Districts (CDDs) are special taxing districts or local units of special-purpose government. A CDD may charge separate non-ad valorem special...

  16. District-Level Downsizing

    Science.gov (United States)

    Schachter, Ron

    2011-01-01

    Draconian cuts have become the order of business for many school districts since the economic recession hit in 2008. But for the coming school year, "draconian" has taken on an even harsher meaning, as states from California and Texas to Illinois and New York wrestle with deficits in the tens of billions of dollars and make…

  17. perceptions in Dedza District

    African Journals Online (AJOL)

    logistical problems. HCWs identified the tendency of patients with ТВ to seek traditional and private healthcare services, the association of ТВ with HIV/AIDS, difficulties in. Abstract traveling to .... "Even those who come to collect the sputum sometimes take time ... when you complain they [district staff] say transport problem ...

  18. State Highway District Boundaries - 2004

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This data represents the NM Department of Transportation District boundaries as legislatively defined (i.e. these are not maintenance defined districts).

  19. Race-differentiated outcomes in multiple special healthcare taxing districts.

    Science.gov (United States)

    Studnicki, James; Fisher, John W; Kamble, Shital

    2010-03-01

    Communities with locally generated special healthcare taxes have demonstrated a generally favorable association with selected population health status outcomes. This research attempted to determine if that positive association with health outcomes is race differentiated. Florida counties with multiple special taxing districts were grouped and compared against counties that had either no special healthcare taxing authority or had such authority but were inactive (did not tax). Outcomes of interest were five combined groups and eight cause-specific mortality indicators and five categories of hospitalizations from the 6-year period 2000-2005 analyzed in 2007. Standard mortality ratios and standard hospitalization ratios were calculated separately for white and black populations in four age bands. Compared to blacks and whites living in communities without special taxing districts, black residents of communities with such districts had larger reductions in mortality for chronic conditions such as cancers, diabetes, stroke, and pneumonia/influenza. The same holds true for hospitalizations for diabetes, congestive heart failure, hypertension, and asthma. These differences were not found in mortality due to HIV, homicide, or motor vehicle crashes. Some differences by taxing district were also age and race differentiated. In communities with health-related taxing authorities, reductions in health disparities between whites and blacks can be demonstrated. These differences are not uniform and vary by the specific type of outcome, race, and age. These findings support the need for studies that prospectively determine whether implementing new taxing strategies may help reduce health disparities. Copyright (c) 2010 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

  20. Problems of Affluent School Districts.

    Science.gov (United States)

    McLoone, Eugene P.

    All school districts are affected by the stagnant economy, the growing needs of the public sector, the increased burden of transfer payments, and the limited growth of public revenues. Retrenchment is common to all school districts, but it may be more severe in affluent districts. By 1969-70, suburban school systems were the clear-cut expenditure…

  1. Black Urine

    Directory of Open Access Journals (Sweden)

    Rahim Vakili

    2016-06-01

    Full Text Available A 2-year-old boy was born at term of healthy, non-consanguineous Iranian parents. His mother attended in the clinic with the history of sometimes discoloration of diapers after passing urine. She noticed that first at the age of one month with intensified in recent months. His Physical examination and growth parameters were normal. His mother denied taking any medication (sorbitol, nitrofurantoin, metronidazole, methocarbamol, sena and methyldopa (5. Qualitative urine examination showed dark black discoloration. By this history, alkaptonuria was the most clinical suspicious. A 24-hour-urine sample was collected and sent for quantitative measurements. The urine sample was highly positive for homogentisic acid and negative for porphyrin metabolites.

  2. Comprehensive Conservation Plan: Huron Wetland Management District, Madison Wetland Management District, Sand Lake Wetland Management District

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This Comprehensive Conservation Plan (CCP) was written to guide management on Huron Wetland Management District, Madison Wetland Management District, and Sand Lake...

  3. District energy a global solution

    Energy Technology Data Exchange (ETDEWEB)

    Damecour, R.; Andersson, B. [Kattner/FVB District Energy Inc., Toronto, ON (Canada)

    1999-08-01

    An overview of the development of district energy systems throughout the world is provided. Significant district energy data is provided for Canada, the United States, East Asia, Korea, Japan, China, Eastern Europe and Russia, Estonia, and Sweden. The overall conclusion is that district energy systems are here to stay and have a good chance of succeeding provided that the concept has the support of business, municipalities and national governments. The 40 years old district heating system in Vasteras, Sweden, the oldest and most successful district energy system in the world, was highlighted.

  4. Black Silicon Solar Cells with Black Ribbons

    DEFF Research Database (Denmark)

    Davidsen, Rasmus Schmidt; Tang, Peter Torben; Mizushima, Io

    2016-01-01

    We present the combination of mask-less reactive ion etch (RIE) texturing and blackened interconnecting ribbons as a method for obtaining all-black solar panels, while using conventional, front-contacted solar cells. Black silicon made by mask-less reactive ion etching has total, average...... in the range 15.7-16.3%. The KOH-textured reference cell had an efficiency of 17.9%. The combination of black Si and black interconnecting ribbons may result in aesthetic, all-black panels based on conventional, front-contacted silicon solar cells....... reflectance below 0.5% across a 156x156 mm2 silicon (Si) wafer. Black interconnecting ribbons were realized by oxidizing copper resulting in reflectance below 3% in the visible wavelength range. Screen-printed Si solar cells were realized on 156x156 mm2 black Si substrates with resulting efficiencies...

  5. Government Districts, Other - MDC_CommissionDistrict2001

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Polygon feature class representing the Redistricting Commission Plan 11-15, adopted November 15, 2001. This Commission District Boundary layer becomes effective...

  6. Qualitative determination of carbon black in food products.

    Science.gov (United States)

    Miranda-Bermudez, E; Belai, N; Harp, B Petigara; Yakes, B J; Barrows, J N

    2012-01-01

    Carbon black (C.I. 77266) is an insoluble pigment produced by the partial combustion of hydrocarbons. The pigment is known by several synonyms, including vegetable carbon, lamp black and carbon ash, that correspond to the raw materials and methods used for its production. Vegetable carbon (E153) is permitted for use in colouring food in the European Union. The US Food and Drug Administration (USFDA) has not approved the use of any type of carbon black for colouring food, although the agency batch certifies the pigment as D&C Black No. 2 for use in colouring certain cosmetics. Since carbon black (as vegetable carbon) may be present in food products offered for import into the United States, the USFDA's district laboratories need a qualitative analytical method for determining its presence. We have developed an extraction method for this purpose. A sample is broken down and dissolved with nitric acid. The resulting solution is filtered and treated with hydrochloric acid to dissolve any black iron oxide also present as a colour additive. A black residue remaining on the filter paper indicates the presence of carbon black in the food. We confirmed the presence of carbon black in residues from several standards and food products using Raman spectroscopy. The limit of detection for this method is 0.0001%.

  7. Fabien Desage, David Guéranger, La politique confisquée. Sociologie des réformes et des institutions intercommunales

    Directory of Open Access Journals (Sweden)

    Hélène Reigner

    2011-11-01

    Full Text Available « L’intercommunalité comme la démocratie sont des affaires trop sérieuses pour être laissées aux seuls élus. » (p.229. Le ton est donné et c’est toute la thèse des auteurs, Fabien Desage et David Guéranger, qui est synthétisée là. Ces derniers se placent sur le registre de l’intervention pour dénoncer l’absence de publicité qui caractérise selon eux le fonctionnement politique de gouvernements intercommunaux « invisibles ». Pour ce faire, ils mutualisent dans cet ouvrage leurs travaux de rec...

  8. 76 FR 19772 - Environmental Impacts Statements; Notice of Availability

    Science.gov (United States)

    2011-04-08

    ..., Black Fork Salvage Project, Proposal to Treat Timer Harvest, Prescribe Fire, and Mechanical Thinning, Uinta-Wasatch-Cache National Forest, Summit County, UT, Comment Period Ends: 05/23/2011, Contact: Tim... Project, Implementation, Divide Ranger District, Rio National Forest, Hinsdale and Mineral Counties, CO...

  9. Alkaline Waterflooding Demonstration Project, Ranger Zone, Long Beach Unit, Wilmington Field, California. Fourth annual report, June 1979-May 1980. Volume 1. Body of report

    Energy Technology Data Exchange (ETDEWEB)

    Carmichael, J.D.

    1981-03-01

    Comparative core flood testing of preserved Ranger Zone core rock samples was completed; the past year's results were discouraging. In contrast, Ranger sand pack alkaline flood tests gave encouraging results. New insights were gained on in-situ alkaline consumption. Dehydration of sodium orthosilicate water-produced water-crude oil systems does not appear to create any operational problems. The alkaline injection facilities were completed and placed in operation on March 27, 1980. The preflush injection, which was composed of 11.5 million barrels of softened fresh water with an average 0.96% of salt, was completed at that time. The total preflush amounted to approximately 10 pore volume percent. The 0.4% sodium orthosilicate-1.0% salt-soft fresh water injection started at the end of the preflush. A loss of injectivity began at the same time as alkaline injection, which is attributed to divalent ions in the salt brine. Salt was removed temporarily from the system on May 30, 1980. No injection wells were redrilled during the year. Other than plug back of one injector and one producer because of bad liners and repair of one injection well with an inner liner, well work was routine and minor in nature. Dual injection strings were transferred from one well to another. One of the injection wells whose injectivity was damaged by the alkaline-salt injection was successfully stimulated. The pilot was self certified under the tertiary incentive program and cost recoupments obtained. Preparations are underway for making the alkaline flood simulator performance prediction for the pilot. Laboratory testing is actively underway in an attempt to quickly find a remedy for the floc formation that occurs on mixing the salt brine and dilute alkaline solution. Volume 1 describes the activities for this period. Volumes 2 and 3 contain appendices.

  10. Income Segregation between School Districts and Inequality in Students' Achievement

    Science.gov (United States)

    Owens, Ann

    2018-01-01

    Large achievement gaps exist between high- and low-income students and between black and white students. This article explores one explanation for such gaps: income segregation between school districts, which creates inequality in the economic and social resources available in advantaged and disadvantaged students' school contexts. Drawing on…

  11. Restorative Interventions and School Discipline Sanctions in a Large Urban School District

    Science.gov (United States)

    Anyon, Yolanda; Gregory, Anne; Stone, Susan; Farrar, Jordan; Jenson, Jeffrey M.; McQueen, Jeanette; Downing, Barbara; Greer, Eldridge; Simmons, John

    2016-01-01

    A large urban district (N = 90,546 students, n = 180 schools) implemented restorative interventions as a response to school discipline incidents. Findings from multilevel modeling of student discipline records (n = 9,921) revealed that youth from groups that tend to be overrepresented in suspensions and expulsions (e.g., Black, Latino, and Native…

  12. Black-Body Radiation

    Indian Academy of Sciences (India)

    Keywords. Black-body radiation; thermal radiation; heat; electromagnetic radiation; Stefan's Law; Stefan–Boltzmann Law; Wien's Law; Rayleigh–Jeans Law; black-body spectrum; ultraviolet catastrophe; zero point energy; photon.

  13. Higher spin black holes

    National Research Council Canada - National Science Library

    Gutperle, Michael; Kraus, Per

    2011-01-01

    .... We find solutions that generalize the BTZ black hole and carry spin-3 charge. The black hole entropy formula yields a result for the asymptotic growth of the partition function at finite spin-3 chemical potential...

  14. Redesigning the District Operating System

    Science.gov (United States)

    Hodas, Steven

    2015-01-01

    In this paper, we look at the inner workings of a school district through the lens of the "district operating system (DOS)," a set of interlocking mutually-reinforcing modules that includes functions like procurement, contracting, data and IT policy, the general counsel's office, human resources, and the systems for employee and family…

  15. Life inside black holes

    OpenAIRE

    Dokuchaev, V. I.

    2012-01-01

    We consider test planet and photon orbits of the third kind inside a black hole, which are stable, periodic and neither come out of the black hole nor terminate at the singularity. Interiors of supermassive black holes may be inhabited by advanced civilizations living on planets with the third-kind orbits. In principle, one can get information from the interiors of black holes by observing their white hole counterparts.

  16. VT Data - Overlay District 20170710, South Burlington

    Data.gov (United States)

    Vermont Center for Geographic Information — Overlay data for the City of South Burlington included in this data:Flood Plain Overlay DistrictTraffic Overlay DistrictInterstate Highway Overlay DistrictData not...

  17. Project 2011 and the Preparation of Black and Latino Students for Admission to Specialized High Schools in New York City

    Science.gov (United States)

    Ebanks, Mercedes E.; Toldson, Ivory A.; Richards, Soyini; Lemmons, Brianna P.

    2012-01-01

    Public elite and specialized high schools in New York City have a very low enrollment of Black and Latino students. Project 2011 is an intensive preparatory instructional program to improve acceptance rates for Black and Latino children to the eight specialized public high schools in New York City. Initiated and funded by District 17 and 18 of the…

  18. Monopole black hole skyrmions

    OpenAIRE

    Moss, I.G.; Shiiki, N.; Winstanley, E.

    2000-01-01

    Charged black hole solutions with pion hair are discussed. These can be\\ud used to study monopole black hole catalysis of proton decay.\\ud There also exist\\ud multi-black hole skyrmion solutions with BPS monopole behaviour.

  19. Black holes in binary stars

    NARCIS (Netherlands)

    Wijers, R.A.M.J.

    1996-01-01

    Introduction Distinguishing neutron stars and black holes Optical companions and dynamical masses X-ray signatures of the nature of a compact object Structure and evolution of black-hole binaries High-mass black-hole binaries Low-mass black-hole binaries Low-mass black holes Formation of black holes

  20. VT Data - Scenic Overlay District 20110301, Winhall

    Data.gov (United States)

    Vermont Center for Geographic Information — Scenic Restriction overaly districts for the Town of Winhall, Vermont. Other overlay districts (Transfer of Development Rights, and Conservation & Recreational...

  1. Charged cosmological black hole

    Science.gov (United States)

    Moradi, Rahim; Stahl, Clément; Firouzjaee, Javad T.; Xue, She-Sheng

    2017-11-01

    The cosmological black holes are black holes living not in an asymptotically flat universe but in an expanding spacetime. They have a rich dynamics especially for their mass and horizon. In this article, we perform a natural step in investigating this new type of black hole: we consider the possibility of a charged cosmological black hole. We derive the general equations of motion governing its dynamics and report a new analytic solution for the special case of the charged Lematre-Tolman-Bondi equations of motion that describe a charged cosmological black hole. We then study various relevant quantities for the characterization of the black hole, such as the C-function, the effect of the charge on the black hole flux, and the nature of the singularity. We also perform numerical investigations to strengthen our results. Finally, we challenge a model of gamma ray burst within our framework.

  2. THE DISTRICT OF CODRU – DISTRICT OR LAND?

    Directory of Open Access Journals (Sweden)

    SIMONA-MONICA CHITA

    2016-06-01

    Full Text Available The District of Codru – District or Land? The main objective of this paper is to demonstrate why the ethnographic Codru is a “district” (ținut and not a “land” (țară – the term used by most people. To achieve this goal, we analyzed the significance of the two concepts, as well as their characteristic elements. Following the first part of the paper we presented connotations that have known “district and land” over time, and in the second part we presented the differences between the two concepts, with application to the District of Codru. Presentation and analysis of the situation eventually led to support the fact that the ethnographic Codru is a “district” – a unique mental space.

  3. 2006 Southwest Florida Water Management District (SWFWMD) Lidar: North District

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is one component of a digital terrain model (DTM) for the Southwest Florida Water Management District's FY2006 Digital Orthophoto (B089) and LiDAR...

  4. Fire and EMS Districts - MDC_LifeSafetyInspDistrict

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — The Fire Prevention Department Inspector District layer is a polygon feature class created for the Miami-Dade Fire Prevention Deparment (MDFPD). It contains the...

  5. Quality Circles for School Districts.

    Science.gov (United States)

    Zahra, Shaker A.; And Others

    1985-01-01

    Discusses the applicability of quality circles in schools. Examines elements of a successful quality circle program, the decision to have such a program, establishing quality circles, potential problems, and the use of quality circles in school districts. (CT)

  6. VT Senate Districts 1992 - polygons

    Data.gov (United States)

    Vermont Center for Geographic Information — (Link to Metadata) The senatorial district designations for this layer were taken from a trace map of unknown origin. A visual compilation of the traced lines and...

  7. VT Senate Districts 1992 - lines

    Data.gov (United States)

    Vermont Center for Geographic Information — (Link to Metadata) The senatorial district designations for this layer were taken from a trace map of unknown origin. A visual compilation of the traced lines and...

  8. Allegheny County School District Boundaries

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This dataset demarcates the school district boundaries within Allegheny County If viewing this description on the Western Pennsylvania Regional Data Center’s open...

  9. Districts for 104th Congress

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This is a polygon coverage of 104th Congressional District boundaries obtained from the U.S. Bureau of the Census. The 103rd Congress was the first Congress that...

  10. Boise geothermal district heating system

    Energy Technology Data Exchange (ETDEWEB)

    Hanson, P.J.

    1985-10-01

    This document describes the Boise geothermal district heating project from preliminary feasibility studies completed in 1979 to a fully operational system by 1983. The report includes information about the two local governments that participated in the project - the City of Boise, Idaho and the Boise Warm Springs Water District. It also discusses the federal funding sources; the financial studies; the feasibility studies conducted; the general system planning and design; design of detailed system components; the legal issues involved in production; geological analysis of the resource area; distribution and disposal; the program to market system services; and the methods of retrofitting buildings to use geothermal hot water for space heating. Technically this report describes the Boise City district heating system based on 170/sup 0/F water, a 4000 gpm production system, a 41,000 foot pipeline system, and system economies. Comparable data are also provided for the Boise Warm Springs Water District. 62 figs., 31 tabs.

  11. New Mexico Property Tax Districts

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This layer represents boundaries for New Mexico tax district "OUT" categories and incorporated/municipal "IN" categories as identified on the "Certificate of Tax...

  12. Stimulated Black Hole Evaporation

    CERN Document Server

    Spaans, Marco

    2016-01-01

    Black holes are extreme expressions of gravity. Their existence is predicted by Einstein's theory of general relativity and is supported by observations. Black holes obey quantum mechanics and evaporate spontaneously. Here it is shown that a mass rate $R_f\\sim 3\\times 10^{-8} (M_0/M)^{1/2}$ $M_0$ yr$^{-1}$ onto the horizon of a black hole with mass $M$ (in units of solar mass $M_0$) stimulates a black hole into rapid evaporation. Specifically, $\\sim 3 M_0$ black holes can emit a large fraction of their mass, and explode, in $M/R_f \\sim 3\\times 10^7 (M/M_0)^{3/2}$ yr. These stimulated black holes radiate a spectral line power $P \\sim 2\\times 10^{39} (M_0/M)^{1/2}$ erg s$^{-1}$, at a wavelength $\\lambda \\sim 3\\times 10^5 (M/M_0)$ cm. This prediction can be observationally verified.

  13. Black holes an introduction

    CERN Document Server

    Raine, Derek

    2005-01-01

    This introduction to the fascinating subject of black holes fills a significant gap in the literature which exists between popular, non-mathematical expositions and advanced textbooks at the research level. It is designed for advanced undergraduates and first year postgraduates as a useful stepping-stone to the advanced literature. The book provides an accessible introduction to the exact solutions of Einstein’s vacuum field equations describing spherical and axisymmetric (rotating) black holes. The geometry and physical properties of these spacetimes are explored through the motion of particles and light. The use of different coordinate systems, maximal extensions and Penrose diagrams is explained. The association of the surface area of a black hole with its entropy is discussed and it is shown that with the introduction of quantum mechanics black holes cease to be black and can radiate. This result allows black holes to satisfy the laws of thermodynamics and thus be consistent with the rest of physics.

  14. Astrophysical black holes

    CERN Document Server

    Gorini, Vittorio; Moschella, Ugo; Treves, Aldo; Colpi, Monica

    2016-01-01

    Based on graduate school lectures in contemporary relativity and gravitational physics, this book gives a complete and unified picture of the present status of theoretical and observational properties of astrophysical black holes. The chapters are written by internationally recognized specialists. They cover general theoretical aspects of black hole astrophysics, the theory of accretion and ejection of gas and jets, stellar-sized black holes observed in the Milky Way, the formation and evolution of supermassive black holes in galactic centers and quasars as well as their influence on the dynamics in galactic nuclei. The final chapter addresses analytical relativity of black holes supporting theoretical understanding of the coalescence of black holes as well as being of great relevance in identifying gravitational wave signals. With its introductory chapters the book is aimed at advanced graduate and post-graduate students, but it will also be useful for specialists.

  15. 76 FR 20971 - Turlock Irrigation District and Modesto Irrigation District; Notice of Intent To File License...

    Science.gov (United States)

    2011-04-14

    ... Energy Regulatory Commission Turlock Irrigation District and Modesto Irrigation District; Notice of..., 2011. d. Submitted By: Turlock Irrigation District and Modesto Irrigation District. e. Name of Project... Regulatory Affairs, Turlock Irrigation District, P.O. Box 949, Turlock, California 95381, 209-883-8241 and...

  16. 77 FR 16828 - Turlock Irrigation District, & Modesto Irrigation District; Notice of Dispute Resolution Process...

    Science.gov (United States)

    2012-03-22

    ... Energy Regulatory Commission Turlock Irrigation District, & Modesto Irrigation District; Notice of... relicensing proceeding for the Don Pedro Hydroelectric Project No. 2299-075.\\1\\ Turlock Irrigation District and the Modesto Irrigation District (collectively, the Districts), are co-licensees for the Don Pedro...

  17. 77 FR 4291 - Turlock Irrigation District; Modesto Irrigation District; Notice of Proposed Restricted Service...

    Science.gov (United States)

    2012-01-27

    ... Energy Regulatory Commission Turlock Irrigation District; Modesto Irrigation District; Notice of Proposed... any Order issuing a license. Turlock Irrigation District and Modesto Irrigation District, as the..., Turlock Irrigation District, P.O. Box 949, Turlock, CA 95381. Greg Dias or Representative, Modesto...

  18. 77 FR 5507 - Turlock Irrigation District, Modesto Irrigation District; Notice of Proposed Restricted Service...

    Science.gov (United States)

    2012-02-03

    ... Energy Regulatory Commission Turlock Irrigation District, Modesto Irrigation District; Notice of Proposed... any Order issuing a license. Turlock Irrigation District and Modesto Irrigation District, as the..., Sacramento, CA 95816. Robert Nees, or Representative, Turlock Irrigation District, P.O. Box 949, Turlock, CA...

  19. Black Friday = Broget Branding?

    DEFF Research Database (Denmark)

    Hansen, Heidi

    2015-01-01

    Black Friday er et godt eksempel på, hvordan ikke kun produktbrands og corporate brands rejser på tværs af landegrænser, men også traditioner som Halloween, Valentines Day og i dette tilfælde den ultimative tilbuds-fredag, som i USA går under navnet Black Friday. Men hvad er Black Friday i Danmark...

  20. Mobilizing Black America

    Science.gov (United States)

    1992-04-01

    killed than was an American soldier in Vietnam. The odds are almost two-to-one that these black youths were brought up in a fatherless household. An...odds that this wish will come true are significantly and shockingly reduced if the child happens to be black. Today in America research has shown that a...white baby stands a seventy percent greater chance of reaching its fourth birthday than a black child . The average life expectancy of African

  1. 75 FR 66721 - Newspapers To Be Used for Publication of Legal Notice of Appealable Decisions and Publication of...

    Science.gov (United States)

    2010-10-29

    ..., OK. Poteau-Cold Springs Ranger District: Arkansas Democrat-Gazette, published daily in Little Rock... daily (Sunday through Friday) in Helena, AR. Sylamore Ranger District: Stone County Leader, published...

  2. 78 FR 21340 - Media Outlets for Publication of Legal and Action Notices in the Southern Region

    Science.gov (United States)

    2013-04-10

    ... Gazette, published daily in Idabel, OK Poteau-Cold Springs Ranger District: Arkansas Democrat-Gazette..., published daily (Sunday through Friday) in Helena, AR Sylamore Ranger District: Stone County Leader...

  3. 76 FR 19030 - Newspapers To Be Used for Publication of Legal Notice of Appealable Decisions and Publication of...

    Science.gov (United States)

    2011-04-06

    ..., OK. Poteau-Cold Springs Ranger District: Arkansas Democrat-Gazette, published daily in Little Rock... Friday) in Helena, AR. Sylamore Ranger District: Stone County Leader, published weekly (Wednesday) in...

  4. 75 FR 20807 - Newspapers To Be Used for Publication of Legal Notice of Appealable Decisions and Publication of...

    Science.gov (United States)

    2010-04-21

    ..., OK. Poteau-Cold Springs Ranger District: Arkansas Democrat-Gazette, published daily in Little Rock... Helena, AR. Sylamore Ranger District: Stone County Leader, published weekly (Wednesday) in Mountain View...

  5. 76 FR 75866 - Newspapers Used for Publication of Legal Notices in the Southwestern Region, Which Includes...

    Science.gov (United States)

    2011-12-05

    ... Comments, Decisions and Objections by Forest Supervisor and Santa Catalina Ranger District are published in... and El Rito Ranger District Notices are published in:--``Rio Grande Sun'', Espanola, New Mexico...

  6. 76 FR 6395 - Lawrence County Resource Advisory Committee

    Science.gov (United States)

    2011-02-04

    ... comments should be sent to Rhonda O'Byrne, 2014 N. Main, Spearfish, SD 57783. Comments may also be sent via... CONTACT: Rhonda O'Byrne, District Ranger, Northern Hills Ranger District, 605-642-4622. Individuals who...

  7. 75 FR 45090 - Lawrence County Resource Advisory Committee

    Science.gov (United States)

    2010-08-02

    ... comments should be sent to Rhonda O'Byrne, 2014 N. Main, Spearfish, SD 57783. Comments may also be sent via... CONTACT: Rhonda O'Byrne, District Ranger, Northern Hills Ranger District, 605-642-4622. Individuals who...

  8. 75 FR 37753 - Lawrence County Resource Advisory Committee

    Science.gov (United States)

    2010-06-30

    ... comments should be sent to Rhonda O'Byrne, 2014 N. Main, Spearfish, SD 57783. Comments may also be sent via... CONTACT: Rhonda O'Byrne, District Ranger, Northern Hills Ranger District, 605-642-4622. Individuals who...

  9. 76 FR 29191 - Lawrence County Resource Advisory Committee

    Science.gov (United States)

    2011-05-20

    ... Northern Hills Ranger District Office at 2014 N. Main. Written comments should be sent to Rhonda O'Byrne... facilitate entry into the building. FOR FURTHER INFORMATION CONTACT: Rhonda O'Byrne, District Ranger...

  10. Asymptotic black holes

    Science.gov (United States)

    Ho, Pei-Ming

    2017-04-01

    Following earlier works on the KMY model of black-hole formation and evaporation, we construct the metric for a matter sphere in gravitational collapse, with the back-reaction of pre-Hawking radiation taken into consideration. The mass distribution and collapsing velocity of the matter sphere are allowed to have an arbitrary radial dependence. We find that a generic gravitational collapse asymptote to a universal configuration which resembles a black hole but without horizon. This approach clarifies several misunderstandings about black-hole formation and evaporation, and provides a new model for black-hole-like objects in the universe.

  11. Improved secondary oil recovery by controlled waterflooding-pilot demonstration: Ranger Zone, Fault Block VII, Wilmington Field. Phase IV. Quarterly report, April-June 1983

    Energy Technology Data Exchange (ETDEWEB)

    1983-07-12

    The project is an improved waterflood demonstration of alkaline water-flooding in a typical well flood pattern of the Ranger Zone of the Long Beach Unit portion of the Wilmington Field. A mixture of 0.4% sodium hydroxide and sodium silicate in fresh water containing 0.75 to 1.0% salt is being injected to improve oil recovery. The demonstration pattern in which D.O.E. participated involves the input of approximately 30,000 to 34,000 B/D water in 8 injection wells which surround 11 active producers in an area of 93 acres. Reservoir engineering studies have shown that the total area being affected by the injection in these 8 wells is much larger, being approximately 200 acres including areas situated both north and south. If the alkaline injection is successful, improved flood efficiency should occur as demonstrated by reduced water-oil ratios and increased oil recovery. Chemical injection continued in the quarter. A simple long term solution to the floc formed on mixing the dilute alkaline solution with the concentrated salt brine was not found. Alternating one week slug injection of soft water with alkali and then soft water with salt continued throughout the quarter. A four-hour soft water spacer with no chemicals was placed between the slugs. Injection and oil, water production data are presented. 7 figures, 1 table.

  12. Improved secondary oil recovery by controlled waterflooding-pilot demonstration: Ranger Zone, Fault Block VII, Wilmington Field. Phase IV. Quarterly report, January-March, 1983

    Energy Technology Data Exchange (ETDEWEB)

    1983-04-12

    The project is an improved waterflood demonstration of alkaline waterflooding in a typical well flood pattern of the Ranger Zone of the Long Beach Unit portion of the Wilmington Field. A mixture of 0.4% sodium hydroxide and sodium silicate in fresh water containing 0.75 to 1.0% salt is being injected to improve oil recovery. The demonstration pattern in which DOE participated involves the input of approximately 30,000 to 34,000 B/D water in 8 injection wells which surround 11 active producers in an area of 93 acres. Reservoir engineering studies have shown that the total area being affected by the injection in these 8 wells is much larger, being approximately 200 acres including areas situated both north and south. If the alkaline injection is successful, improved flood efficiency should occur as demonstrated by reduced water-oil ratios and increased oil recovery. Chemical injection continued in the quarter. A simple long term solution to the floc formed on mixing the dilute alkaline solution with the concentrated salt brine was not found. Alternating one week slug injection of soft water with alkali and then soft water with salt continued throughout the quarter. A four-hour soft water spacer with no chemicals was placed between the slugs. Injection data and graphs showing performance of the area are presented. 7 figures, 2 tables.

  13. Comparison of the McGrath® Series 5 and GlideScope® Ranger with the Macintosh laryngoscope by paramedics

    Directory of Open Access Journals (Sweden)

    Werner Christian

    2011-01-01

    Full Text Available Abstract Background Out-of-hospital endotracheal intubation performed by paramedics using the Macintosh blade for direct laryngoscopy is associated with a high incidence of complications. The novel technique of video laryngoscopy has been shown to improve glottic view and intubation success in the operating room. The aim of this study was to compare glottic view, time of intubation and success rate of the McGrath® Series 5 and GlideScope® Ranger video laryngoscopes with the Macintosh laryngoscope by paramedics. Methods Thirty paramedics performed six intubations in a randomised order with all three laryngoscopes in an airway simulator with a normal airway. Subsequently, every participant performed one intubation attempt with each device in the same manikin with simulated cervical spine rigidity using a cervical collar. Glottic view, time until visualisation of the glottis and time until first ventilation were evaluated. Results Time until first ventilation was equivalent after three intubations in the first scenario. In the scenario with decreased cervical motion, the time until first ventilation was longer using the McGrath® compared to the GlideScope® and AMacintosh (p ® device (p Conclusions The learning curve for video laryngoscopy in paramedics was steep in this study. However, these data do not support prehospital use of the McGrath® and GlideScope® devices by paramedics.

  14. Comparison of the McGrath® Series 5 and GlideScope® Ranger with the Macintosh laryngoscope by paramedics.

    Science.gov (United States)

    Piepho, Tim; Weinert, Kathrin; Heid, Florian M; Werner, Christian; Noppens, Rüdiger R

    2011-01-17

    Out-of-hospital endotracheal intubation performed by paramedics using the Macintosh blade for direct laryngoscopy is associated with a high incidence of complications. The novel technique of video laryngoscopy has been shown to improve glottic view and intubation success in the operating room. The aim of this study was to compare glottic view, time of intubation and success rate of the McGrath® Series 5 and GlideScope® Ranger video laryngoscopes with the Macintosh laryngoscope by paramedics. Thirty paramedics performed six intubations in a randomised order with all three laryngoscopes in an airway simulator with a normal airway. Subsequently, every participant performed one intubation attempt with each device in the same manikin with simulated cervical spine rigidity using a cervical collar. Glottic view, time until visualisation of the glottis and time until first ventilation were evaluated. Time until first ventilation was equivalent after three intubations in the first scenario. In the scenario with decreased cervical motion, the time until first ventilation was longer using the McGrath® compared to the GlideScope® and AMacintosh (p success rate for endotracheal intubation was similar for all three devices. Glottic view was only improved using the McGrath® device (p < 0.001) compared to using the Macintosh blade. The learning curve for video laryngoscopy in paramedics was steep in this study. However, these data do not support prehospital use of the McGrath® and GlideScope® devices by paramedics.

  15. Certification of district heating substations

    Energy Technology Data Exchange (ETDEWEB)

    2007-01-15

    These Technical Regulations, F:103-6, have been produced and published by the Swedish District Heating Association in conjunction with manufacturers. Approved testing is part of the process of obtaining certification for a district heating substation. In addition, the process includes a review of documentation and of the manufacturer's production inspection procedures. A certified unit fulfils the requirements set out in the Association's document F:101, General Technical Requirements. Until further notice, the Association has selected SP Technical Research Institute of Sweden for certification of district heating substations. Certification means that the quality and function/performance of a prefabricated district heating substation have been examined and approved. Certification test method F:103-6 includes both static and dynamic tests and inspections. Detailed information on the district heating substation and its properties is given in the certification test reports. The unique feature of this certification is that the test reports are in the public domain. This is possible because the Association has full right of insight into the certification process, and because testing is performed in accordance with test programmes and procedures decided by the Association. In this document (F: 103-6), the Association specifies what is to be reported when SP carries out inspections at the manufacturer's premises. This can include details of claims lodged with the manufacturer and/or non-compliances with the required specification of the district heating substation. Such cases will be considered by a Certification Panel. Test reports and certificates provide information on the district heating substation's properties and performance, which can be used when assessing the substations. The technical tests do not address the long-term properties of substations, but SP's inspection specifically includes visual examination and application of its

  16. A black carbon air quality network

    Science.gov (United States)

    Kirchstetter, T.; Caubel, J.; Cados, T.; Preble, C.; Rosen, A.

    2016-12-01

    We developed a portable, power efficient black carbon sensor for deployment in an air quality network in West Oakland, California. West Oakland is a San Francisco Bay Area residential/industrial community adjacent to regional port and rail yard facilities, and is surrounded by major freeways. As such, the community is affected by diesel particulate matter emissions from heavy-duty diesel trucks, locomotives, and ships associated with freight movement. In partnership with Environmental Defense Fund, the Bay Area Air Quality Management District, and the West Oakland Environmental Indicators Project, we are collaborating with community members to build and operate a 100-sensor black carbon measurement network for a period of several months. The sensor employs the filter-based light transmission method to measure black carbon. Each sensor node in the network transmits data hourly via SMS text messages. Cost, power consumption, and performance are considered in choosing components (e.g., pump) and operating conditions (e.g., sample flow rate). In field evaluation trials over several weeks at three monitoring locations, the sensor nodes provided black carbon concentrations comparable to commercial instruments and ran autonomously for a week before sample filters and rechargeable batteries needed to be replaced. Buildup to the 100-sensor network is taking place during Fall 2016 and will overlap with other ongoing air monitoring projects and monitoring platforms in West Oakland. Sensors will be placed along commercial corridors, adjacent to freeways, upwind of and within the Port, and throughout the residential community. Spatial and temporal black carbon concentration patterns will help characterize pollution sources and demonstrate the value of sensing networks for characterizing intra-urban air pollution concentrations and exposure to air pollution.

  17. The Meaning of Black Music

    Science.gov (United States)

    Byrd, Donald

    1972-01-01

    Discusses the definition of black music in terms of the history and cultural background of black people, places it within the larger scope of western music, and suggests its survival value with respect to black people. (JM)

  18. The Thermodynamics of Black Holes

    National Research Council Canada - National Science Library

    Emparan, Roberto; Tinto, Massimo; Barbero G, J Fernando; Heusler, Markus; Rendall, Alan D; Adamo, Timothy M; Liebling, Steven L; Sasaki, Misao; Poisson, Eric; Wald, Robert M; Postnov, Konstantin A; Amendola, Luca; Shibata, Masaru; Tagoshi, Hideyuki; Reall, Harvey S; Kozameh, Carlos; Palenzuela, Carlos; Yungelson, Lev R; Villaseñor, Eduardo J. S; Appleby, Stephen; Taniguchi, Keisuke; Dhurandhar, Sanjeev V; Bacon, David; Newman, Ezra T; Baker, Tessa; Baldi, Marco; Bartolo, Nicola; Blanchard, Alain; Bonvin, Camille; Borgani, Stefano; Branchini, Enzo; Burrage, Clare; Camera, Stefano; Carbone, Carmelita; Casarini, Luciano; Cropper, Mark; de Rham, Claudia; Di Porto, Cinzia; Ealet, Anne; Ferreira, Pedro G; Finelli, Fabio; García-Bellido, Juan; Giannantonio, Tommaso; Guzzo, Luigi; Heavens, Alan; Heisenberg, Lavinia; Heymans, Catherine; Hoekstra, Henk; Hollenstein, Lukas; Holmes, Rory; Horst, Ole; Jahnke, Knud; Kitching, Thomas D; Koivisto, Tomi; Kunz, Martin; La Vacca, Giuseppe; March, Marisa; Majerotto, Elisabetta; Markovic, Katarina; Marsh, David; Marulli, Federico; Massey, Richard; Mellier, Yannick; Mota, David F; Nunes, Nelson J; Percival, Will; Pettorino, Valeria; Porciani, Cristiano; Quercellini, Claudia; Read, Justin; Rinaldi, Massimiliano; Sapone, Domenico; Scaramella, Roberto; Skordis, Constantinos; Simpson, Fergus; Taylor, Andy; Thomas, Shaun; Trotta, Roberto; Verde, Licia; Vernizzi, Filippo; Vollmer, Adrian; Wang, Yun; Weller, Jochen; Zlosnik, Tom

    ...We review the present status of black hole thermodynamics. Our review includes discussion of classical black hole thermodynamics, Hawking radiation from black holes, the generalized second law, and the issue of entropy bounds...

  19. Protecting Black Girls

    Science.gov (United States)

    Morris, Monique W.

    2016-01-01

    Statistics show that black girls in U.S. K-12 public schools are overrepresented among students who face disciplinary approaches (such as suspensions) that exclude or even criminalize them. Morris explains how black girls face conditions that make them vulnerable to a phenomenon she calls "school to confinement pathways"--conditions like…

  20. Black Hole Dynamic Potentials

    Indian Academy of Sciences (India)

    2016-01-27

    Jan 27, 2016 ... In the following paper, certain black hole dynamic potentials have been developed definitively on the lines of classical thermodynamics. These potentials have been refined in view of the small differences in the equations of the laws of black hole dynamics as given by Bekenstein and those of ...

  1. Black hole levitron

    NARCIS (Netherlands)

    Arsiwalla, X.D.; Verlinde, E.P.

    2010-01-01

    We study the problem of spatially stabilizing four dimensional extremal black holes in background electric/magnetic fields. Whilst looking for stationary stable solutions describing black holes placed in external fields we find that taking a continuum limit of Denef et al.’s multicenter

  2. Black holes matter

    DEFF Research Database (Denmark)

    Kragh, Helge Stjernholm

    2016-01-01

    Review essay, Marcia Bartusiak, Black Hole: How an Idea Abandoned by Newtonians, Hated by Einstein, and Gambled On by Hawking Became Loved (New Haven: Yale University Press, 2015).......Review essay, Marcia Bartusiak, Black Hole: How an Idea Abandoned by Newtonians, Hated by Einstein, and Gambled On by Hawking Became Loved (New Haven: Yale University Press, 2015)....

  3. The Black Woman's Burden

    Science.gov (United States)

    Hayes, Dianne

    2012-01-01

    Not even the first lady of the most powerful nation in the world is immune to stereotypes that have plagued Black women since first setting foot on American soil. Stereotypes of being the "angry Black woman" and curiosity about differences in appearance still persist from the academy to 1600 Pennsylvania Ave. As African-American women rise in…

  4. Black hole Berry phase

    NARCIS (Netherlands)

    de Boer, J.; Papadodimas, K.; Verlinde, E.

    2009-01-01

    Supersymmetric black holes are characterized by a large number of degenerate ground states. We argue that these black holes, like other quantum mechanical systems with such a degeneracy, are subject to a phenomenon which is called the geometric or Berry’s phase: under adiabatic variations of the

  5. Alienation among Black Adolescents.

    Science.gov (United States)

    Wolfstetter-Kausch, Heidi; Gaier, Eugene L.

    1981-01-01

    A study of alienation among 32 Black high school students of both sexes indicated that the students were alienated from both society and school. The hypothesis that females are less alienated than males was not supported. A reconsideration of the concept of matriarchy, as applied to the Black lower class adolescent is proposed. (Author/CM)

  6. District heat in the Nordic countries

    Energy Technology Data Exchange (ETDEWEB)

    Langseth, Benedicte; Havskjold, Monica

    2009-03-15

    District heat regulation - in Sweden: New district heat law (2008). The district heat suppliers are instructed to negotiate the price and other terms of delivery with the costumers when requested by the costumers. If the parties are unable to find an agreement, the can have the authorities arbitrate for them. More openness (e.g. annual reports). In Finland: The district heat suppliers decide their own prices. Has to reflect the costs, but allow for district heat expansion and a reasonable profit. Same price for same type of costumers. Regulated by general legislation (competition and consumer protection legislation). In Denmark: Designated areas for district heat and natural gas where electric heating is prohibited. 'Hvile i seg selv' principle. In Norway: District heat concessions are mandatory for installations over 10 MW. The municipality can decide that connection is mandatory, but not use of district heat. District heat price can not exceed electricity price. (AG)

  7. Industrial District as a Corporation

    Directory of Open Access Journals (Sweden)

    Reza MOHAMMADY GARFAMY

    2011-03-01

    Full Text Available This paper provides a comparison study of industrial districts in two European countries, Spain and Sweden, using the conceptual framework of corporation. The relevance of this approach is based on the specific qualities that the industrial districts have, including the preexisting conditions, local traditions, products and production characteristics, marketing strategies, local policies and present challenges. The findings indicate the ways in which different patterns of inter-firm relationships, organization of production and dynamics of local alliances have shaped divergent regional responses to the industrial construction.

  8. Black hole critical phenomena without black holes

    Indian Academy of Sciences (India)

    Abstract. Studying the threshold of black hole formation via numerical evolution has led to the discovery of fascinating nonlinear phenomena. Power-law mass scaling, aspects of universality, and self-similarity have now been found for a large variety of models. However, questions remain. Here I briefly review critical ...

  9. 76 FR 30094 - Central Montana Resource Advisory Committee

    Science.gov (United States)

    2011-05-24

    ... Judith Ranger District, 109 Central Ave. Written comments may be submitted as described under... Judith Ranger District. Please call ahead to (406) 566-2292 to facilitate entry into the building to view comments. FOR FURTHER INFORMATION CONTACT: Ron Wiseman, District Ranger, Lewis and Clark National Forest...

  10. 75 FR 16422 - Plumas National Forest, California, Keddie Ridge Hazardous Fuels Reduction Project

    Science.gov (United States)

    2010-04-01

    ... USDA Forest Service, Plumas National Forest, Mt. Hough Ranger District will prepare and environmental..., Interdisciplinary Team Leader, Mt. Hough Ranger District, 39696 Highway 70, Quincy, CA 95971. Comments may be: (1..., Interdisciplinary Team Leader, Mt. Hough Ranger District, 39696 Highway 70, Quincy, CA 95971. Telephone: (530) 283...

  11. 76 FR 34034 - Newspapers Used for Publication of Legal Notices by the Intermountain Region; Utah, Idaho, Nevada...

    Science.gov (United States)

    2011-06-10

    ... portion: Reno Gazette-Journal Austin District Ranger decisions: The Battle Mountain Bugle Bridgeport and...-Journal Regional Forester decisions affecting National Forests in Wyoming: Casper Star-Tribune Regional... District Ranger decisions: Messenger-Index District Ranger decisions for Idaho City and Mountain Home...

  12. 78 FR 33799 - Newspapers Used for Publication of Legal Notices by the Intermountain Region; Utah, Idaho, Nevada...

    Science.gov (United States)

    2013-06-05

    ... Spring Mountains National Recreation Area District Ranger decisions: Las Vegas Review Journal Tonopah... decisions affecting National Forests in Nevada: Reno Gazette-Journal Regional Forester decisions affecting... District Ranger decisions for Idaho City and Mountain Home: Idaho Statesman Lowman District Ranger...

  13. Future Services for District Heating Solutions in Residential Districts

    Directory of Open Access Journals (Sweden)

    Hannele Ahvenniemi

    2014-06-01

    Full Text Available The underlying assumption of this study is that in order to retain the competitiveness while reaching for the EU targets regarding low-energy construction, district heating companies need to develop new business and service models. How district heating companies could broaden their perspective and switch to a more service-oriented way of thinking is a key interest of our research. The used methods in our study are house builder interviews and a questionnaire. With the help of these methods we discussed the potential interest in heating related services acquiring a comprehensive understanding of the customer needs. The results indicate the importance of certain criteria when choosing the heating system in households: easiness, comfort and affordability seem to dominate the house builders’ preferences. Also environmental awareness seems to be for many an important factor when making a decision about the heating of the house. Altogether, based on the results of this study, we suggest that the prospects of district heating could benefit from highlighting certain aspects and strengths in the future. District heating companies need to increase flexibility, readiness to adopt new services, to invest in new marketing strategies and improving the communication skills.

  14. Application and optimization of input parameter spaces in mass flow modelling: a case study with r.randomwalk and r.ranger

    Science.gov (United States)

    Krenn, Julia; Zangerl, Christian; Mergili, Martin

    2017-04-01

    r.randomwalk is a GIS-based, multi-functional, conceptual open source model application for forward and backward analyses of the propagation of mass flows. It relies on a set of empirically derived, uncertain input parameters. In contrast to many other tools, r.randomwalk accepts input parameter ranges (or, in case of two or more parameters, spaces) in order to directly account for these uncertainties. Parameter spaces represent a possibility to withdraw from discrete input values which in most cases are likely to be off target. r.randomwalk automatically performs multiple calculations with various parameter combinations in a given parameter space, resulting in the impact indicator index (III) which denotes the fraction of parameter value combinations predicting an impact on a given pixel. Still, there is a need to constrain the parameter space used for a certain process type or magnitude prior to performing forward calculations. This can be done by optimizing the parameter space in terms of bringing the model results in line with well-documented past events. As most existing parameter optimization algorithms are designed for discrete values rather than for ranges or spaces, the necessity for a new and innovative technique arises. The present study aims at developing such a technique and at applying it to derive guiding parameter spaces for the forward calculation of rock avalanches through back-calculation of multiple events. In order to automatize the work flow we have designed r.ranger, an optimization and sensitivity analysis tool for parameter spaces which can be directly coupled to r.randomwalk. With r.ranger we apply a nested approach where the total value range of each parameter is divided into various levels of subranges. All possible combinations of subranges of all parameters are tested for the performance of the associated pattern of III. Performance indicators are the area under the ROC curve (AUROC) and the factor of conservativeness (FoC). This

  15. Scalarized hairy black holes

    Energy Technology Data Exchange (ETDEWEB)

    Kleihaus, Burkhard, E-mail: b.kleihaus@uni-oldenburg.de [Institut für Physik, Universität Oldenburg, Postfach 2503, D-26111 Oldenburg (Germany); Kunz, Jutta [Institut für Physik, Universität Oldenburg, Postfach 2503, D-26111 Oldenburg (Germany); Yazadjiev, Stoytcho [Department of Theoretical Physics, Faculty of Physics, Sofia University, Sofia 1164 (Bulgaria)

    2015-05-11

    In the presence of a complex scalar field scalar–tensor theory allows for scalarized rotating hairy black holes. We exhibit the domain of existence for these scalarized black holes, which is bounded by scalarized rotating boson stars and hairy black holes of General Relativity. We discuss the global properties of these solutions. Like their counterparts in general relativity, their angular momentum may exceed the Kerr bound, and their ergosurfaces may consist of a sphere and a ring, i.e., form an ergo-Saturn.

  16. Scalarized Hairy Black Holes

    CERN Document Server

    Kleihaus, Burkhard; Yazadjiev, Stoytcho

    2015-01-01

    In the presence of a complex scalar field scalar-tensor theory allows for scalarized rotating hairy black holes. We exhibit the domain of existence for these scalarized black holes, which is bounded by scalarized rotating boson stars and ordinary hairy black holes. We discuss the global properties of these solutions. Like their counterparts in general relativity, their angular momentum may exceed the Kerr bound, and their ergosurfaces may consist of a sphere and a ring, i.e., form an ergo-Saturn.

  17. Black hole uncertainties

    CERN Document Server

    Danielsson, U H

    1993-01-01

    In this work the quantum theory of two dimensional dilaton black holes is studied using the Wheeler De Witt equation. The solutions correspond to wave functions of the black hole. It is found that for an observer inside the horizon, there are uncertainty relations for the black hole mass and a parameter in the metric determining the Hawking flux. Only for a particular value of this parameter, can both be known with arbitrary accuracy. In the generic case there is instead a relation which is very similar to the so called string uncertainty relation.

  18. Black holes new horizons

    CERN Document Server

    Hayward, Sean Alan

    2013-01-01

    Black holes, once just fascinating theoretical predictions of how gravity warps space-time according to Einstein's theory, are now generally accepted as astrophysical realities, formed by post-supernova collapse, or as supermassive black holes mysteriously found at the cores of most galaxies, powering active galactic nuclei, the most powerful objects in the universe. Theoretical understanding has progressed in recent decades with a wider realization that local concepts should characterize black holes, rather than the global concepts found in textbooks. In particular, notions such as trapping h

  19. Scalarized hairy black holes

    Directory of Open Access Journals (Sweden)

    Burkhard Kleihaus

    2015-05-01

    Full Text Available In the presence of a complex scalar field scalar–tensor theory allows for scalarized rotating hairy black holes. We exhibit the domain of existence for these scalarized black holes, which is bounded by scalarized rotating boson stars and hairy black holes of General Relativity. We discuss the global properties of these solutions. Like their counterparts in general relativity, their angular momentum may exceed the Kerr bound, and their ergosurfaces may consist of a sphere and a ring, i.e., form an ergo-Saturn.

  20. Competition with Charters Motivates Districts

    Science.gov (United States)

    Holley, Marc J.; Lueken, Martin F.; Egalite, Anna J.

    2013-01-01

    Proponents of market-based education reform often argue that introducing charter schools and other school choice policies creates a competitive dynamic that will prompt low-performing districts to improve their practice. Rather than simply providing an alternative to neighborhood public schools for a handful of students, the theory says, school…

  1. health in Wakiso District, Uganda

    African Journals Online (AJOL)

    Abstract. Objective: Bride price payment is a gender issue with implications on gender relations in different socio-cultural contexts. It also impacts. Sexual and Reproductive Health and Rights. In a qualitative study on the perceptions of domestic violence in Wakiso district, payment of bride price emerged as one of the ...

  2. Location - Managed Facility - St. Paul District (MVP)

    Data.gov (United States)

    Army Corps of Engineers, Department of the Army, Department of Defense — St. Paul District - US Army Corps of Engineers Managed Facility locations. District headquarters, Natural Resource, Recreation, Lock and Dam, and Regulatory offices...

  3. Upper Mississippi River National Wildlife and Fish Refuge : Winona District, La Crosse District, McGregor District, Savanna District : Annual Narrative Report : Calendar Year 1992

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Upper Mississippi River National Wildlife and Fish Refuge summarizes activities for Winona District, La Crosse District, McGregor...

  4. Iowa Congressional Districts for 2013-2022

    Data.gov (United States)

    Iowa State University GIS Support and Research Facility — Congressional district boundaries, enacted April 19, 2011, effective beginning with the elections in 2012 for the 113th U.S. Congress. The districts will remain in...

  5. Upper Mississippi River National Wildlife and Fish Refuge : Winona District, La Crosse District, McGregor District, Savanna District : Annual Narrative Report : Calendar Year 1993

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Upper Mississippi River National Wildlife and Fish Refuge summarizes activities for Winona District, La Crosse District, McGregor...

  6. Upper Mississippi River National Wildlife and Fish Refuge : Winona District, La Crosse District, McGregor District, Savanna District : Annual Narrative Report : Calendar Year 1994

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Upper Mississippi River National Wildlife and Fish Refuge summarizes activities for Winona District, La Crosse District, McGregor...

  7. Upper Mississippi River National Wildlife and Fish Refuge : Winona District, La Crosse District, McGregor District, Savanna District : Annual Narrative Report : Calendar Year 1995

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Upper Mississippi River National Wildlife and Fish Refuge summarizes activities for Winona District, La Crosse District, McGregor...

  8. Upper Mississippi River National Wildlife and Fish Refuge : Winona District, La Crosse District, McGregor District, Savanna District : Annual Narrative Report : Calendar Year 1996

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Upper Mississippi River National Wildlife and Fish Refuge summarizes activities for Winona District, La Crosse District, McGregor...

  9. U.S. Coast Guard (USCG) Districts

    Data.gov (United States)

    Department of Homeland Security — This layer is a polygonal dataset that represents land and maritime boundaries for each representative United States Coast Guard district, which includes district 1,...

  10. Black Hole Shadows of Charged Spinning Black Holes

    OpenAIRE

    Takahashi, Rohta

    2005-01-01

    We propose a method for measuring the black hole charge by imaging a black hole shadow in a galactic center by future interferometers. Even when the black hole is uncharged, it is possible to confirm the charge neutrality by this method. We first derive the analytic formulae of the black hole shadow in an optically thin medium around a charged spinning black hole, and then investigate how contours of the black hole shadow depend on the spin and the charge of the black hole for several inclina...

  11. Comparison of the enrollment percentages of magnet and non-magnet schools in a large urban school district.

    Directory of Open Access Journals (Sweden)

    Emily Arcia

    2006-12-01

    Full Text Available Are magnet schools in a position to meet diversity ideals? As districts are declared unitary and released from court ordered desegregation, many are framing their commitments to fairness and equity in terms of diversity˜i.e., comparable rates of participation and comparable educational outcomes in all segments the student population. In this study, the enrollment statistics for magnet and contiguous non-magnet public schools in Miami-Dade County Public Schools, a large, urban district that had been released from court ordered desegregation, were compared to each other and to district enrollment averages at two time points: the year the district was declared unitary and four years hence. Findings indicated that within four years of being declared unitary, the gains that the magnet schools had made with regards to Black/non-Black desegregation had eroded substantially. Also, in the four year span, magnet schools had not made significant strides in meeting the diversity ideals adopted by the district at being released from supervision by the court. These findings highlight the difficulty of attaining diversity in student enrollment characteristics when quotas are not used and suggest that recruitment and enrollment policies must be crafted with care if districts are to achieve diversity goals.

  12. ranger en prison : « Mes fers sont prêts ; la liberté m’inspire ; Je vais chanter son hymne glorieux »

    OpenAIRE

    Leterrier, Sophie-Anne

    2013-01-01

    Le célèbre chansonnier Béranger a fait deux séjours en prison sous la Restauration. L’article analyse comment ces épisodes ont servi sa popularité, dans le cadre d’une véritable stratégie, passant à la fois par la diffusion des textes et par l’image. Il analyse les chansons écrites en prison, et montre comment elles illustrent la position du chansonnier et son défi au pouvoir. The famous Beranger was sent to prison twice during Restoration. The contribution shows how theses incarcerations ...

  13. School of the Future Handbook. A Guide for Technology Implementation. F. M. Black Middle School.

    Science.gov (United States)

    Smith, Richard Alan; Sassi, Anthony

    In 1985, Apple Computer, Inc., and the Houston Independent School District began a project to create a model School of the Future at the F. M. Black Middle School. As described in this guide, the project was designed to demonstrate how microcomputers and related technology can make the process of instruction more efficient and effective. The…

  14. 75 FR 35778 - Modesto Irrigation District and Turlock Irrigation District; Notice of Preliminary Permit...

    Science.gov (United States)

    2010-06-23

    ... Energy Regulatory Commission Modesto Irrigation District and Turlock Irrigation District; Notice of... Competing Applications June 16, 2010. On February 1, 2010, Modesto Irrigation District and Turlock Irrigation District filed an application for a preliminary permit, pursuant to section 4(f) of the Federal...

  15. 75 FR 43958 - Turlock Irrigation District and Modesto Irrigation District; Notice of Application for Amendment...

    Science.gov (United States)

    2010-07-27

    ... Energy Regulatory Commission Turlock Irrigation District and Modesto Irrigation District; Notice of...: May 24, 2010. d. Applicant: Turlock Irrigation District and Modesto Irrigation District. e. Name of.... g. Filed Pursuant to: Federal Power Act, 16 USC 791a-825r. h. Applicant Contact: Turlock Irrigation...

  16. Understanding the Black Aesthetic Experience.

    Science.gov (United States)

    Curtis, Marvin V.

    1988-01-01

    Discussing the importance of the Black aesthetic experience, Curtis examines Black cultural heritage and participatory style, the spiritual, and the creation and recreation of Black music. Advocating multicultural music education in teacher training, he suggests that Black music be studied for its value and contribution to society. Lists five ways…

  17. Black Managers in White Corporations.

    Science.gov (United States)

    Fernandez, John P.

    The study examines the major determinants of the career patterns of black managers in white businesses and the effects of corporations on their black managers' identities and relationships to the black community. Analyzed were occupational mobility theories; white and black managers' career patterns, goals, and related factors; company employment…

  18. The Thermodynamics of Black Holes

    Directory of Open Access Journals (Sweden)

    Wald Robert M.

    2001-01-01

    Full Text Available We review the present status of black hole thermodynamics. Our review includes discussion of classical black hole thermodynamics, Hawking radiation from black holes, the generalized second law, and the issue of entropy bounds. A brief survey also is given of approaches to the calculation of black hole entropy. We conclude with a discussion of some unresolved open issues.

  19. Groundwater and geothermal: urban district heating applications

    Energy Technology Data Exchange (ETDEWEB)

    Mounts, R.; Frazier, A.; Wood, E.; Pyles, O.

    1982-01-01

    This report describes how several cities use groundwater and geothermal energy in district heating systems. It begins with groundwater, introducing the basic technology and techniques of development, and describing two case studies of cities with groundwater-based district heating systems. The second half of the report consists of three case studies of cities with district heating systems using higher temperature geothermal resources.

  20. School District Leadership: Systems, Strategies, and Structures

    Science.gov (United States)

    Kovash, Lynne A.

    2009-01-01

    The researcher studied eight Minnesota school district leadership systems, strategies, and structures and the effect on student achievement. Quantitative research methods were used to collect data from the eight Minnesota school districts. The population included eight northwestern Minnesota public school districts identified for "Needing…

  1. The Phantom Mandate: District Capacity for Reform.

    Science.gov (United States)

    Florian, Judy; Hange, Jane; Copeland, Glenda

    Nearly every state focuses on implementing standards-based systems but supports educational reform in as many different ways as there are states. An examination of 15 districts located in 13 states suggests, however, that some states and districts have policies and practices in common that support a district's capacity for reform, whether there is…

  2. Sharing Local Revenue: One District's Perspective

    Science.gov (United States)

    Cline, David S.

    2011-01-01

    The vast majority of U.S. school districts are considered independent and have taxing authority; the remaining districts rely on revenue and budgetary approval from their local government. In the latter case, localities often use some form of negotiated process to determine the amount of revenue their school districts will receive. Typically, a…

  3. Characteristics of High-Performing School Districts

    Science.gov (United States)

    Leithwood, Kenneth; Azah, Vera N.

    2017-01-01

    This mixed-methods study inquired about characteristics of districts which influence changes in student achievement and how those characteristics are developed. Staff in 49 Ontario districts were surveyed to estimate the status of nine district characteristics on changes in provincial tests of math and language achievement over five years. A…

  4. Cyclone hazard proneness of districts of India

    Indian Academy of Sciences (India)

    Out of 96 districts, 12 are very highly prone, 41 are highly prone, 30 are moderately prone, and the remaining 13 districts are less prone. This classification of coastal districts based on hazard may be considered for all the required purposes including coastal zone management and planning. However, the vulnerability of the ...

  5. The Philadelphia School District's Ongoing Financial Crisis

    Science.gov (United States)

    Caskey, John; Kuperberg, Mark

    2014-01-01

    This article describes the budget crisis that the School District of Philadelphia has faced for the past few years. Three specific events triggered the 2012 crisis: an abrupt reduction in federal and state funding, the inability of the district to cut many of its costs, and political pressures on the district to spend available revenues in a given…

  6. Black holes with halos

    Science.gov (United States)

    Monten, Ruben; Toldo, Chiara

    2018-02-01

    We present new AdS4 black hole solutions in N =2 gauged supergravity coupled to vector and hypermultiplets. We focus on a particular consistent truncation of M-theory on the homogeneous Sasaki–Einstein seven-manifold M 111, characterized by the presence of one Betti vector multiplet. We numerically construct static and spherically symmetric black holes with electric and magnetic charges, corresponding to M2 and M5 branes wrapping non-contractible cycles of the internal manifold. The novel feature characterizing these nonzero temperature configurations is the presence of a massive vector field halo. Moreover, we verify the first law of black hole mechanics and we study the thermodynamics in the canonical ensemble. We analyze the behavior of the massive vector field condensate across the small-large black hole phase transition and we interpret the process in the dual field theory.

  7. Black Rail Pilot Survey

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Aural surveys using tape recorded calls proved to be an efficient and effective way to survey large expanses of shallow marsh for black rails (Laterallus...

  8. Illuminating black holes

    Science.gov (United States)

    Barr, Ian A.; Bull, Anne; O'Brien, Eileen; Drillsma-Milgrom, Katy A.; Milgrom, Lionel R.

    2016-07-01

    Two-dimensional shadows formed by illuminating vortices are shown to be visually analogous to the gravitational action of black holes on light and surrounding matter. They could be useful teaching aids demonstrating some of the consequences of general relativity.

  9. Black Teenage Pregnancy

    National Research Council Canada - National Science Library

    Loretta I. Winters; Paul C. Winters

    2012-01-01

    .... No difference between Blacks and Whites was found during better economic times. During 2003-2004, the period of greatest economic stress, race was determined to be the only predictor of teenage pregnancy...

  10. Black, Hairy Tongue

    Science.gov (United States)

    ... mouthwashes containing irritating oxidizing agents, such as peroxide Tobacco use Drinking excessive amounts of coffee or black tea Excessive alcohol use Eating a soft diet that doesn't help to rub dead skin ...

  11. Black Hole Simulation

    Science.gov (United States)

    1999-01-01

    This graphic shows the computer simulation of a black hole from start to finish. Plasma is falling slowly toward the black hole in a (at the upper left). The plasma has a magnetic field, shown by the white lines. It picks up speed as it falls toward the hole in b (at the upper right), c (lower left) and d (lower right). However, the rotating black hole twists up space itself (and the magnetic field lines) and ejects electromagnetic power along the north and south poles above the black hole. The red and white color shows the immense electromagnetic power output, which eventually will pick up particles and form squirting jets. This simulation was conducted using supercomputers at Japan's National Institute for Fusion Science.

  12. Nonsingular black hole

    Science.gov (United States)

    Chamseddine, Ali H.; Mukhanov, Viatcheslav

    2017-03-01

    We consider the Schwarzschild black hole and show how, in a theory with limiting curvature, the physical singularity "inside it" is removed. The resulting spacetime is geodesically complete. The internal structure of this nonsingular black hole is analogous to Russian nesting dolls. Namely, after falling into the black hole of radius rg, an observer, instead of being destroyed at the singularity, gets for a short time into the region with limiting curvature. After that he re-emerges in the near horizon region of a spacetime described by the Schwarzschild metric of a gravitational radius proportional to rg^{1/3}. In the next cycle, after passing the limiting curvature, the observer finds himself within a black hole of even smaller radius proportional to rg^{1/9}, and so on. Finally after a few cycles he will end up in the spacetime where he remains forever at limiting curvature.

  13. Black hole quantum spectrum

    National Research Council Canada - National Science Library

    Corda, Christian

    2013-01-01

    Introducing a black hole (BH) effective temperature, which takes into account both the non-strictly thermal character of Hawking radiation and the countable behavior of emissions of subsequent Hawking quanta, we recently re...

  14. Holographic black hole chemistry

    National Research Council Canada - National Science Library

    Karch, Andreas; Robinson, Brandon

    2015-01-01

    Thermodynamic quantities associated with black holes in Anti-de Sitter space obey an interesting identity when the cosmological constant is included as one of the dynamical variables, the generalized Smarr relation...

  15. ADSORPTION OF Cr(VI ON BLACK WATER

    Directory of Open Access Journals (Sweden)

    Rasti Januarita

    2010-06-01

    Full Text Available The effect of initial concentration of Cr(VI on adsorption to black water of Gambut, District of Banjar, South Borneo has been investigated, as well as interaction between Cr(VI species and functional black water organic fraction. The initial work was optimization of Cr(VI determination using UV-Visible Spectrophotometry with diphenylcarbacide as complexing agent and preparation of black water using mixture of 2% HCl and 5% HF with HCl-HF ratio of 1 : 1 (v/v. The quantity of Cr(VI species adsorbed on black water was calculated by determining the amount of Cr(VI species in solution before and after interaction. The functional groups in interaction between Cr(VI species and black water organic fraction was studied qualitatively using infrared spectroscopy. The results showed that optimum condition for Cr(VI species analysis using UV-Visible spectrophotometry with diphenylcarbacide as complexing agent was at wave length of 540 nm, pH 1,5, 15 - 60 minutes at which complex remain stable, and minimum mol ratio of diphenylcarbacide : Cr(VI 45 : 1, and has a sensitivity of 1.134 mg/L and detection limit of 0.00495 mg/L. The analysis was not affected by the presence of Cr(III in concentration less than 40 times of Cr(VI concentration. After treatment with HCl-HF the quantity of black water organic fraction showing humic acid properties decreased 0,1998 percent. Organic fraction of black water used adsorpted Cr(VIwith capacity of 4,050 mg/g.   Keywords: Adsorption, Cr(VI, Black Water

  16. Charged Galileon black holes

    Energy Technology Data Exchange (ETDEWEB)

    Babichev, Eugeny; Charmousis, Christos [Laboratoire de Physique Théorique (LPT), Univ. Paris-Sud, CNRS UMR 8627, F-91405 Orsay (France); Hassaine, Mokhtar, E-mail: eugeny.babichev@th.u-psud.fr, E-mail: christos.charmousis@th.u-psud.fr, E-mail: hassaine@inst-mat.utalca.cl [Instituto de Matemática y Física, Universidad de Talca, Casilla 747, Talca (Chile)

    2015-05-01

    We consider an Abelian gauge field coupled to a particular truncation of Horndeski theory. The Galileon field has translation symmetry and couples non minimally both to the metric and the gauge field. When the gauge-scalar coupling is zero the gauge field reduces to a standard Maxwell field. By taking into account the symmetries of the action, we construct charged black hole solutions. Allowing the scalar field to softly break symmetries of spacetime we construct black holes where the scalar field is regular on the black hole event horizon. Some of these solutions can be interpreted as the equivalent of Reissner-Nordstrom black holes of scalar tensor theories with a non trivial scalar field. A self tuning black hole solution found previously is extended to the presence of dyonic charge without affecting whatsoever the self tuning of a large positive cosmological constant. Finally, for a general shift invariant scalar tensor theory we demonstrate that the scalar field Ansatz and method we employ are mathematically compatible with the field equations. This opens up the possibility for novel searches of hairy black holes in a far more general setting of Horndeski theory.

  17. Black Saturn with dipole ring

    OpenAIRE

    Yazadjiev, Stoytcho

    2007-01-01

    We present a new stationary, asymptotically flat solution of 5D Einstein-Maxwell gravity describing a Saturn-like black object: a rotating black hole surrounded by a rotating dipole black ring. The solution is generated by combining the vacuum black Saturn solution and the vacuum black ring solution with appropriately chosen parameters. Some basic properties of the solution are analyzed and the basic quantities are calculated.

  18. Black Sea in Bloom

    Science.gov (United States)

    2002-01-01

    This true-color image shows bright, turquoise-colored swirls across the surface of the Black Sea, signifying the presence of a large phytoplankton bloom. Scientists have observed similar blooms recurring annually, roughly this same time of year. The Sea of Azov, which is the smaller body of water located just north of the Black Sea in this image, also shows a high level of biological activity currently ongoing. The brownish pixels in the Azov are probably sediments carried in from high waters upstream. This scene was acquired by the Sea-viewing Wide Field-of-view Sensor (SeaWiFS), flying aboard the OrbView-2 satellite, on May 4, 2002. According to the Black Sea Environment Programme's Marine Hydrophysical Institute, the Black Sea is 'one of the marine areas of the world most damaged by human activities.' The coastal zone around these Eastern European inland water bodies is densely populated-supporting a permanent population of roughly 16 million people and another 4 million tourists each year. Six countries border with the Black Sea, including Ukraine to the north, Russia and Georgia to the east, Turkey to the south, and Bulgaria and Romania to the west. Because it is isolated from the world's oceans, and because there is an extensive drainage network of rivers that empty into it, the Black Sea has a unique and delicate water balance which is very important for supporting its marine ecosystem. Of particular concern to scientists is the salinity, water level, and nutrient levels of the Black Sea's waters, all of which are, unfortunately, being impacted by human activities. Within the last three decades the combination of increased nutrient loads from human sources together with pollution and over-harvesting of fisheries has resulted in a sharp decline in water quality. Scientists from each of the Black Sea's bordering nations are currently working together to study the issues and formulate a joint, international strategy for saving this unique marine ecosystem

  19. Black holes and beyond

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-02-01

    Belief in the existence of black holes is the ultimate act of faith for a physicist. First suggested by the English clergyman John Michell in the year 1784, the gravitational pull of a black hole is so strong that nothing - not even light - can escape. Gravity might be the weakest of the fundamental forces but black-hole physics is not for the faint-hearted. Black holes present obvious problems for would-be observers because they cannot, by definition, be seen with conventional telescopes - although before the end of the decade gravitational-wave detectors should be able to study collisions between black holes. Until then astronomers can only infer the existence of a black hole from its gravitational influence on other matter, or from the X-rays emitted by gas and dust as they are dragged into the black hole. However, once this material passes through the 'event horizon' that surrounds the black hole, we will never see it again - not even with X-ray specs. Despite these observational problems, most physicists and astronomers believe that black holes do exist. Small black holes a few kilometres across are thought to form when stars weighing more than about two solar masses collapse under the weight of their own gravity, while supermassive black holes weighing millions of solar masses appear to be present at the centre of most galaxies. Moreover, some brave physicists have proposed ways to make black holes - or at least event horizons - in the laboratory. The basic idea behind these 'artificial black holes' is not to compress a large amount of mass into a small volume, but to reduce the speed of light in a moving medium to less than the speed of the medium and so create an event horizon. The parallels with real black holes are not exact but the experiments could shed new light on a variety of phenomena. The first challenge, however, is to get money for the research. One year on from a high-profile meeting on artificial black holes in London, for

  20. The Relationship between Student Achievement, School District Economies of Scale, School District Size, and Student Socioeconomic Status

    Science.gov (United States)

    Trani, Randy

    2009-01-01

    The relationships between student achievement, school district economies of scale, school district size and student socioeconomic status were measured for 131 school districts in the state of Oregon. Data for school districts ranging in size from districts with around 300 students to districts with more than 40,000 students were collected for…

  1. Merging Black Holes

    Science.gov (United States)

    Centrella, John

    2009-01-01

    The final merger of two black holes is expected to be the strongest gravitational wave source for ground-based interferometers such as LIGO, VIRGO, and GEO600, as well as the space-based LISA. Observing these sources with gravitational wave detectors requires that we know the radiation waveforms they emit. And, when the black holes merge in the presence of gas and magnetic fields, various types of electromagnetic signals may also be produced. Since these mergers take place in regions of extreme gravity, we need to solve Einstein's equations of general relativity on a computer. For more than 30 years, scientists have tried to compute black hole mergers using the methods of numerical relativity. The resulting computer codes have been plagued by instabilities, causing them to crash well before the black holes in the binary could complete even a single orbit. Within the past few years, however, this situation has changed dramatically, with a series of remarkable breakthroughs. This talk will focus on new simulations that are revealing the dynamics and waveforms of binary black hole mergers, and their applications in gravitational wave detection, testing general relativity, and astrophysics.

  2. Black hole gravitohydromagnetics

    CERN Document Server

    Punsly, Brian

    2008-01-01

    Black hole gravitohydromagnetics (GHM) is developed from the rudiments to the frontiers of research in this book. GHM describes plasma interactions that combine the effects of gravity and a strong magnetic field, in the vicinity (ergosphere) of a rapidly rotating black hole. This topic was created in response to the astrophysical quest to understand the central engines of radio loud extragalactic radio sources. The theory describes a "torsional tug of war" between rotating ergospheric plasma and the distant asymptotic plasma that extracts the rotational inertia of the black hole. The recoil from the struggle between electromagnetic and gravitational forces near the event horizon is manifested as a powerful pair of magnetized particle beams (jets) that are ejected at nearly the speed of light. These bipolar jets feed large-scale magnetized plasmoids on scales as large as millions of light years (the radio lobes of extragalactic radio sources). This interaction can initiate jets that transport energy fluxes exc...

  3. Merging Black Holes

    Science.gov (United States)

    Centrella, Joan

    2012-01-01

    The final merger of two black holes is expected to be the strongest source of gravitational waves for both ground-based detectors such as LIGO and VIRGO, as well as future. space-based detectors. Since the merger takes place in the regime of strong dynamical gravity, computing the resulting gravitational waveforms requires solving the full Einstein equations of general relativity on a computer. For many years, numerical codes designed to simulate black hole mergers were plagued by a host of instabilities. However, recent breakthroughs have conquered these instabilities and opened up this field dramatically. This talk will focus on.the resulting 'gold rush' of new results that is revealing the dynamics and waveforms of binary black hole mergers, and their applications in gravitational wave detection, testing general relativity, and astrophysics

  4. The Superstrong Black Mother.

    Science.gov (United States)

    Elliott, Sinikka; Reid, Megan

    Baltimore mother Toya Graham became a viral video sensation after being filmed yelling at and hitting her teen son. Graham, who is Black, was trying to stop her son from joining the protests following Freddie Gray's death in police custody in Baltimore in April 2015. Dubbed "mother of the year," news outlets applauded Graham for her fierce determination to keep her son out of harm's way by any means necessary. The media and ensuing public response to the video are illuminating for what they say about cultural notions of Black motherhood: the good Black mom should be superstrong to protect her children, but she is also responsible for controlling her children and preventing them from getting into trouble. In celebrating Graham, the media was implicitly condemning all the other mothers whose children participated in the protests-that is, the mothers who did not prevent their children from "senseless" rioting against institutional racism in policing.

  5. Turbulent black holes.

    Science.gov (United States)

    Yang, Huan; Zimmerman, Aaron; Lehner, Luis

    2015-02-27

    We demonstrate that rapidly spinning black holes can display a new type of nonlinear parametric instability-which is triggered above a certain perturbation amplitude threshold-akin to the onset of turbulence, with possibly observable consequences. This instability transfers from higher temporal and azimuthal spatial frequencies to lower frequencies-a phenomenon reminiscent of the inverse cascade displayed by (2+1)-dimensional fluids. Our finding provides evidence for the onset of transitory turbulence in astrophysical black holes and predicts observable signatures in black hole binaries with high spins. Furthermore, it gives a gravitational description of this behavior which, through the fluid-gravity duality, can potentially shed new light on the remarkable phenomena of turbulence in fluids.

  6. Braneless Black Holes

    Energy Technology Data Exchange (ETDEWEB)

    Rajaraman, Arvind

    2003-06-02

    It is known that the naive version of D-brane theory is inadequate to explain the black hole entropy in the limit in which the Schwarzschild radius becomes larger than all compactification radii. We present evidence that a more consistent description can be given in terms of strings with rescaled tensions. We show that the rescaling can be interpreted as a redshift of the tension of a fundamental string in the gravitational field of the black hole. An interesting connection is found between the string level number and the Rindler energy. Using this connection, we reproduce the entropies of Schwarzschild black holes in arbitrary dimensions in terms of the entropy of a single string at the Hagedorn temperature.

  7. Characterizing Black Hole Mergers

    Science.gov (United States)

    Baker, John; Boggs, William Darian; Kelly, Bernard

    2010-01-01

    Binary black hole mergers are a promising source of gravitational waves for interferometric gravitational wave detectors. Recent advances in numerical relativity have revealed the predictions of General Relativity for the strong burst of radiation generated in the final moments of binary coalescence. We explore features in the merger radiation which characterize the final moments of merger and ringdown. Interpreting the waveforms in terms of an rotating implicit radiation source allows a unified phenomenological description of the system from inspiral through ringdown. Common features in the waveforms allow quantitative description of the merger signal which may provide insights for observations large-mass black hole binaries.

  8. Superfluid Black Holes.

    Science.gov (United States)

    Hennigar, Robie A; Mann, Robert B; Tjoa, Erickson

    2017-01-13

    We present what we believe is the first example of a "λ-line" phase transition in black hole thermodynamics. This is a line of (continuous) second order phase transitions which in the case of liquid ^{4}He marks the onset of superfluidity. The phase transition occurs for a class of asymptotically anti-de Sitter hairy black holes in Lovelock gravity where a real scalar field is conformally coupled to gravity. We discuss the origin of this phase transition and outline the circumstances under which it (or generalizations of it) could occur.

  9. Are Black Holes Springy?

    CERN Document Server

    Good, Michael R R

    2014-01-01

    A $(3+1)$-dimensional asymptotically flat Kerr black hole angular speed $\\Omega_+$ can be used to define an effective spring constant, $k=m\\Omega_+^2$. Its maximum value is the Schwarzschild surface gravity, $k = \\kappa $, which rapidly weakens as the black hole spins down and the temperature increases. The Hawking temperature is expressed in terms of the spring constant: $2\\pi T = \\kappa - k$. Hooke's law, in the extremal limit, provides the force $F = 1/4$, which is consistent with the conjecture of maximum force in general relativity.

  10. district.

    African Journals Online (AJOL)

    Dujardin B, Haelterman E, Van Damme W, Kegels G. The adequacy of one sputum smear for diagnosing pulmonary tuberculosis. Am J Pubi Hlth 1997; 87: 1234-1235. 16. Narain R, Nair SS, Naganna К, Chandrasekhar P, Ramanatha Rao G, Lai P. Problems in defining a "case" of pulmonary tuberculosis in prevalence ...

  11. Meer bekend over Black Mold

    NARCIS (Netherlands)

    Duyvesteijn, R.G.E.; Kohrman, E.

    2008-01-01

    In de vollegrondsrozenteelt zorgde Black Mold in 2007 voor een groot aantal mislukte oculaties. In 2008 waren er aanzienlijk minder problemen. Uit onderzoek is meer bekend over de oorzaak en bestrijding van Black Mold.

  12. Black Sea Bass genetic connectivity

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Microsatellite analysis of black sea bass was undertaken to determine magnitude and direction of mixing of black seabass across the Hatteras boundary, as well as...

  13. Quantum aspects of black holes

    CERN Document Server

    2015-01-01

    Beginning with an overview of the theory of black holes by the editor, this book presents a collection of ten chapters by leading physicists dealing with the variety of quantum mechanical and quantum gravitational effects pertinent to black holes. The contributions address topics such as Hawking radiation, the thermodynamics of black holes, the information paradox and firewalls, Monsters, primordial black holes, self-gravitating Bose-Einstein condensates, the formation of small black holes in high energetic collisions of particles, minimal length effects in black holes and small black holes at the Large Hadron Collider. Viewed as a whole the collection provides stimulating reading for researchers and graduate students seeking a summary of the quantum features of black holes.

  14. Rehabilitation of district heating networks

    Energy Technology Data Exchange (ETDEWEB)

    Ottosson, Peter [AaF-Energikonsult Syd AB (Sweden)

    1996-11-01

    Often the choice is between reparation or exchange of a damaged section of the network. If the exchange is based on the wrong assumptions, large sections of undamaged pipelines could be removed. Most important for the district heating company is to decide which strategy to use for the future exchange of the pipelines. Whichever strategy used, it has to based on an assessment of the network and/or assumptions based on that assessment. The question if it is possible extend the life span of the pipelines arises. What is the most economical choice, the exchange or the renovation. (au)

  15. The Myth of the Black Matriarchy.

    Science.gov (United States)

    Staples, Robert

    1981-01-01

    Reprint of a 1970 article that describes the oppression of Blacks and the distortion of Black family life throughout United States history. Holds that the myth of Black matriarchy sets back the struggle for Black liberation. (GC)

  16. Black Hole: The Interior Spacetime

    CERN Document Server

    Ong, Yen Chin

    2016-01-01

    The information loss paradox is often discussed from the perspective of the observers who stay outside of a black hole. However, the interior spacetime of a black hole can be rather nontrivial. We discuss the open problems regarding the volume of a black hole, and whether it plays any role in information storage. We also emphasize the importance of resolving the black hole singularity, if one were to resolve the information loss paradox.

  17. Black Holes in Higher Dimensions

    Directory of Open Access Journals (Sweden)

    Reall Harvey S.

    2008-09-01

    Full Text Available We review black-hole solutions of higher-dimensional vacuum gravity and higher-dimensional supergravity theories. The discussion of vacuum gravity is pedagogical, with detailed reviews of Myers–Perry solutions, black rings, and solution-generating techniques. We discuss black-hole solutions of maximal supergravity theories, including black holes in anti-de Sitter space. General results and open problems are discussed throughout.

  18. Black Pineleaf Scale (FIDL)

    Science.gov (United States)

    Katharine A. Sheehan; Mario A. Melendez; Shana Westfall

    1998-01-01

    The black pineleaf scale (Nuculaspis californica (Coleman)) belongs to a group of sucking insects called armored scales. Concealed under their protective shells, these scales insert their mouthparts into their hosts, removing sap and, possibly, injecting toxic enzymes secreted in the saliva. Armored scales are important pests of agricultural and ornamental plants;...

  19. Almost BPS black holes

    NARCIS (Netherlands)

    Goldstein, K.D.|info:eu-repo/dai/nl/314132376; Katmadas, S.

    2009-01-01

    We study non-BPS black hole solutions to ungauged supergravity with 8 supercharges coupled to vector multiplets in four and five dimensions. We identify a large class of five dimensional non-BPS solutions, which we call ``almost BPS'', that are supersymmetric on local patches and satisfy a first

  20. Annotated black walnut literature

    Science.gov (United States)

    J. W. Van Sambeek

    2006-01-01

    Many of our publications on the establishment, management, and utilization of black walnut, butternut, and associated high-value hardwoods are printed in conference proceedings or scientific journals that are not readily available at most public libraries or on the internet. As Chair of the Education Committee, I have tried to summarize for you the relevant findings of...

  1. Gasification of black liquor

    Science.gov (United States)

    Kohl, A.L.

    1987-07-28

    A concentrated aqueous black liquor containing carbonaceous material and alkali metal sulfur compounds is treated in a gasifier vessel containing a relatively shallow molten salt pool at its bottom to form a combustible gas and a sulfide-rich melt. The gasifier vessel, which is preferably pressurized, has a black liquor drying zone at its upper part, a black liquor solids gasification zone located below the drying zone, and a molten salt sulfur reduction zone which comprises the molten salt pool. A first portion of an oxygen-containing gas is introduced into the gas space in the gasification zone immediately above the molten salt pool. The remainder of the oxygen-containing gas is introduced into the molten salt pool in an amount sufficient to cause gasification of carbonaceous material entering the pool from the gasification zone but not sufficient to create oxidizing conditions in the pool. The total amount of the oxygen-containing gas introduced both above the pool and into the pool constitutes between 25 and 55% of the amount required for complete combustion of the black liquor feed. A combustible gas is withdrawn from an upper portion of the drying zone, and a melt in which the sulfur content is predominantly in the form of alkali metal sulfide is withdrawn from the molten salt sulfur reduction zone. 2 figs.

  2. Nonsingular black hole

    Energy Technology Data Exchange (ETDEWEB)

    Chamseddine, Ali H. [American University of Beirut, Physics Department, Beirut (Lebanon); I.H.E.S., Bures-sur-Yvette (France); Mukhanov, Viatcheslav [Niels Bohr Institute, Niels Bohr International Academy, Copenhagen (Denmark); Ludwig-Maximilians University, Theoretical Physics, Munich (Germany); MPI for Physics, Munich (Germany)

    2017-03-15

    We consider the Schwarzschild black hole and show how, in a theory with limiting curvature, the physical singularity ''inside it'' is removed. The resulting spacetime is geodesically complete. The internal structure of this nonsingular black hole is analogous to Russian nesting dolls. Namely, after falling into the black hole of radius r{sub g}, an observer, instead of being destroyed at the singularity, gets for a short time into the region with limiting curvature. After that he re-emerges in the near horizon region of a spacetime described by the Schwarzschild metric of a gravitational radius proportional to r{sub g}{sup 1/3}. In the next cycle, after passing the limiting curvature, the observer finds himself within a black hole of even smaller radius proportional to r{sub g}{sup 1/9}, and so on. Finally after a few cycles he will end up in the spacetime where he remains forever at limiting curvature. (orig.)

  3. Bulletproof Black Man

    DEFF Research Database (Denmark)

    Højer, Henrik

    2016-01-01

    Netflix’ kommende serie om den sorte Marvel-helt Luke Cage lander snart – midt i de aktuelle racekonflikter i USA. I GIF-anatomien "Bulletproof Black Man" sætter Henrik Højer serien ind i dens amerikanske kontekst....

  4. When Black Holes Collide

    Science.gov (United States)

    Baker, John

    2010-01-01

    Among the fascinating phenomena predicted by General Relativity, Einstein's theory of gravity, black holes and gravitational waves, are particularly important in astronomy. Though once viewed as a mathematical oddity, black holes are now recognized as the central engines of many of astronomy's most energetic cataclysms. Gravitational waves, though weakly interacting with ordinary matter, may be observed with new gravitational wave telescopes, opening a new window to the universe. These observations promise a direct view of the strong gravitational dynamics involving dense, often dark objects, such as black holes. The most powerful of these events may be merger of two colliding black holes. Though dark, these mergers may briefly release more energy that all the stars in the visible universe, in gravitational waves. General relativity makes precise predictions for the gravitational-wave signatures of these events, predictions which we can now calculate with the aid of supercomputer simulations. These results provide a foundation for interpreting expect observations in the emerging field of gravitational wave astronomy.

  5. Annotated black walnut literature

    Science.gov (United States)

    J. W. Van Sambeek

    2007-01-01

    Many of the publications on establishment, management, and utilization of black walnut and other high-value hardwoods are printed in conference proceedings or scientific journals that are not readily available at most public libraries or on the internet. As Chair of the Education Committee of the Walnut Council, I have tried to summarize the findings from the following...

  6. Training Black Entrepreneurs

    Science.gov (United States)

    Davis, Earl F.; And Others

    1974-01-01

    The training phases of a pre-business program to prepare a limited number of blacks to enter business is described in four stages: preparation, formal instruction, on the job training, and follow-up training. The program was not successful as a variety of problems arose from participants, budgets, and/or program planning. (AG)

  7. Suburban Black Lives Matter

    Science.gov (United States)

    Lewis-McCoy, R. L'Heureux

    2018-01-01

    This article explores the range of experiences and meanings of Black life in suburban space. Drawing from educational, historical, and sociological literatures, I argue that an underconsideration of suburban space has left many portraits of educational inequality incomplete. The article outlines the emergence of American suburbs and the formation…

  8. Crohn's Disease Transvaal Blacks

    African Journals Online (AJOL)

    Crohn's disease is rarely seen in Transvaal Blacks. Three cases are presented. The pathology and radiological features are discussed. The difficulty of diagnosing the extent of the disease in the acute stage both clinically and radiologically is emph,!lsised. The acute case should be. Department of Surgery, Baragwanath ...

  9. 77 FR 21556 - Don Pedro Hydroelectric Project: Turlock Irrigation District; Modesto Irrigation District...

    Science.gov (United States)

    2012-04-10

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Don Pedro Hydroelectric Project: Turlock Irrigation District; Modesto Irrigation District; Supplement to Notice of Study Dispute Resolution Technical Conference On March 16, 2012...

  10. Faunal diversity of Satara District, Maharashtra, India

    OpenAIRE

    Amit Sayyed

    2016-01-01

    Satara District of Maharashtra State is a part of northern Western Ghats and Deccan Plateau biogeographic zones.  The data on various faunal groups was collected from the extensive study carried out during the period between 2007 and 2010, covering different parts of the district.  The present study reports faunal diversity of the district with 677 species under 150 families belonging to 11 different groups.  Overall, the district has substantial faunal diversity.  Out of the total species, 9...

  11. Lowex-fernwaerme; multilevel district heating

    Energy Technology Data Exchange (ETDEWEB)

    Dittmann, A.; Rhein, M.; Wirths, A.; Robbi, S.; Gross, S.; Richter, W.; Knorr, M.

    2008-09-15

    In this paper district heating systems from the generator to the consumer are examined and it is presented an overview on possibilities and effects caused by lowering the flow and the return temperature to improve the efficiency of district heating. The main interest contains an optimization tool for production planning of district heating generators. As main next step the simulation model will be parameterised by the load curves, figure lines and technical restrictions that each subtopic came and is coming up with. This will enable the user to asses the functionality, efficiency and economical effects of a decreasing exergy level within a new or existing district heating system.

  12. 4th Generation District Heating (4GDH)

    DEFF Research Database (Denmark)

    Lund, Henrik; Werner, Sven; Wiltshire, Robin

    2014-01-01

    This paper defines the concept of 4th Generation District Heating (4GDH) including the relations to District Cooling and the concepts of smart energy and smart thermal grids. The motive is to identify the future challenges of reaching a future renewable non-fossil heat supply as part...... of the implementation of overall sustainable energy systems. The basic assumption is that district heating and cooling has an important role to play in future sustainable energy systems – including 100 percent renewable energy systems – but the present generation of district heating and cooling technologies will have...

  13. Reinstating district nursing: A UK perspective.

    Science.gov (United States)

    Morris, Hannah

    2017-09-01

    As policy directives gather pace for service provision to be delivered in primary care, district nursing has not been recognised as a valuable asset to facilitate this agenda. Investment in district nursing and specialist district nursing education has fallen. This is concurrent with an ageing district nursing workforce, a lack of recruitment and growing caseloads, as district nursing adapts to meet the challenges of the complexities of contemporary healthcare in the community. The district nurse role is complex and multifaceted and includes working collaboratively and creatively to coordinate care. Redressing the shortages of specialist district nurse practitioners with increased numbers of health care support workers will not replace the skill, knowledge, experience required to meet the complex care needs of today's society. District nursing needs to be reinstated as the valuable asset it is, through renewed investment in the service, research development and in specialist practice education. To prevent extinction district nurses need to be able to demonstrate and articulate the complexities and dynamisms of the role to reinstate themselves to their commissioners as a valuable asset for contemporary practice that can meet current health and social care needs effectively. Crown Copyright © 2017. Published by Elsevier Ltd. All rights reserved.

  14. String physics and black holes

    Energy Technology Data Exchange (ETDEWEB)

    Susskind, L. [Stanford Univ., CA (United States). Dept. of Physics; Uglum, J. [Stanford Univ., CA (United States). Dept. of Physics

    1996-02-01

    In these lectures we review the quantum physics of large Schwarzschild black holes. Hawking`s information paradox, the theory of the stretched horizon and the principle of black hole complementarity are covered. We then discuss how the ideas of black hole complementarity may be realized in string theory. Finally, arguments are given that the world may be a hologram. (orig.).

  15. Queering Black Racial Identity Development

    Science.gov (United States)

    Johnson, Alandis A.; Quaye, Stephen John

    2017-01-01

    We used queer theory to encourage readers to think differently about previous theories about Black racial identity development. Queer theory facilitates new and deeper understandings of how Black people develop their racial identities, prompting more fluidity and nuance. Specifically, we present a queered model of Black racial identity development…

  16. The Strengths of Black Families.

    Science.gov (United States)

    Hill, Robert B.

    This report identifies and analyzes five strengths of black families: adaptability roles, strong kinship bonds, strong work orientation, strong religious orientation, and achievement orientation. These five characteristics have been functional for the survival, advancement, and stability of black families. Most discussions of black families tend…

  17. Sexism and the Black Male

    Science.gov (United States)

    Sizemore, Barbara A.

    1973-01-01

    Explores the myth'' of matriarchy, compares the status of black women with that of white women in terms of marriage, education, income and political participation, and examines the ideology of several black men in order to analyze the black male's participation in upholding the value of male superiority. (RJ)

  18. Black carbon in marine sediments

    NARCIS (Netherlands)

    Middelburg, J.J.; Nieuwenhuize, J.; Van Breugel, P.

    1999-01-01

    Concentrations of black carbon were determined for a number of marine sediments. A comparison of black carbon based on thermal oxidation and hot concentrated nitric acid pretreatments revealed that the latter significantly overestimates combustion derived carbon phases. Black carbon accounts for

  19. Health Issues Facing Black Women.

    Science.gov (United States)

    Reid, Inez Smith

    Black women in the United States experience a high incidence of serious health problems and, as a group, receive insufficient and inadequate medical care. The death rate for black women suffering from breast cancer has increased substantially since 1950. Also of great concern is the high incidence of cervical cancer in low income black women…

  20. Black-spot poison ivy.

    Science.gov (United States)

    Schram, Sarah E; Willey, Andrea; Lee, Peter K; Bohjanen, Kimberly A; Warshaw, Erin M

    2008-01-01

    In black-spot poison ivy dermatitis, a black lacquerlike substance forms on the skin when poison ivy resin is exposed to air. Although the Toxicodendron group of plants is estimated to be the most common cause of allergic contact dermatitis in the United States, black-spot poison ivy dermatitis is relatively rare.

  1. Uncovering Black Womanhood in Engineering

    Science.gov (United States)

    Gibson, Sheree L.; Espino, Michelle M.

    2016-01-01

    Despite the growing research that outlines the experiences of Blacks and women undergraduates in engineering, little is known about Black women in this field. The purpose of this qualitative study was to uncover how eight Black undergraduate women in engineering understood their race and gender identities in a culture that can be oppressive to…

  2. Black silicon with black bus-bar strings

    DEFF Research Database (Denmark)

    Davidsen, Rasmus Schmidt; Tang, Peter Torben; Mizushima, Io

    2016-01-01

    We present the combination of black silicon texturing and blackened bus-bar strings as a potential method for obtaining all-black solar panels, while using conventional, front-contacted solar cells. Black silicon was realized by mask-less reactive ion etching resulting in total, average reflectance...... below 0.5% across a 156x156 mm2 silicon wafer. Black bus-bars were realized by oxidized copper resulting in reflectance below 3% in the entire visible wavelength range. The combination of these two technologies may result in aesthetic, all-black panels based on conventional, front-contacted solar cells...

  3. Habitat preferences and conservation threats to Black-necked Cranes wintering in Bhutan.

    Science.gov (United States)

    Namgay, Rinchen; Wangchuk, Sangay

    2016-01-01

    Black-necked Crane (Grus nigricollis) is a vulnerable Red list species whose populations are declining. However, little is known about Black-necked Cranes' habitat requirements or the causes of their population decline. We identified Black-necked Cranes' winter roost and foraging preferences of Black-necked Cranes in Bhutan during the winter of 2013-2014. Black-necked Cranes' roosts were recorded using Garmin GPSmap 60CSx, while foraging preferences and threats to the birds were identified based on a survey of household heads (n = 107) residing within a 3 km radius of roost sites. We grouped the threats identified by the communities into four major categories, viz. biological, social, political and natural threats based on the relevance. Of the four major threats, communities residing within the roosting and foraging habitat of the Black-necked Crane reported biological threat as major. Biological threats as reported by communities include loss of habitat, food shortage and competition from other animals. We recommend the present roosting areas be designated as part of the conservation areas for Black-necked Crane wintering in Bumthang district. In addition to preserving these areas, government should also encourage farming in foraging habitats of Black-necked Crane, because they mainly feed on barley, wheat, paddy, potatoes and buckwheat, besides roots, tubers and insects in the wetlands.

  4. Black Strings, Black Rings and State-space Manifold

    CERN Document Server

    Bellucci, Stefano

    2011-01-01

    State-space geometry is considered, for diverse three and four parameter non-spherical horizon rotating black brane configurations, in string theory and $M$-theory. We have explicitly examined the case of unit Kaluza-Klein momentum $D_1D_5P$ black strings, circular strings, small black rings and black supertubes. An investigation of the state-space pair correlation functions shows that there exist two classes of brane statistical configurations, {\\it viz.}, the first category divulges a degenerate intrinsic equilibrium basis, while the second yields a non-degenerate, curved, intrinsic Riemannian geometry. Specifically, the solutions with finitely many branes expose that the two charged rotating $D_1D_5$ black strings and three charged rotating small black rings consort real degenerate state-space manifolds. Interestingly, arbitrary valued $M_5$-dipole charged rotating circular strings and Maldacena Strominger Witten black rings exhibit non-degenerate, positively curved, comprehensively regular state-space con...

  5. Assessing black progress: voting and citizenship rights, residency and housing, education.

    Science.gov (United States)

    Farley, R

    1986-01-01

    greatly reduced. By 1960, black students approached parity with whites in terms of measurable aspects of school facilities. In 1940, young blacks averaged about 3 fewer years of educational attainment than whites; the time is nearing when the years of schooling completed by blacks and whites will be the same. In small and medium-sized cities throughout the country, public schools are generally integrated. However, the situation in the largest metropolitan areas is very different. Today, large public schools are segregated, in large part, because blacks and whites live in separate school districts.

  6. Anthropological District. Notes for an anthropological study of the industrial districts

    OpenAIRE

    Michele Fontefrancesco

    2012-01-01

    The article discusses industrial district theory as objects of anthropological enquiry. Providing a review of the history of studies in industrial anthropology and industrial district theory, the articles explores extended case method and in the multi-sited ethnography as viable methodologies to make industrial district an object of anthropological research practice and epistemology.

  7. Budget Stability, Revenue Volatility, and District Relations: Determinants of Georgia ELOST Distribution to Municipal School Districts

    Science.gov (United States)

    Reinagel, Tyler P.

    2014-01-01

    School districts across the United States are often forced into situations where limited public funds must be distributed among multiple districts. These are often reliant on distribution rates negotiated by district leadership and elected officials. An example of this is Georgia's 1% Education Local Option Sales Tax (ELOST). The tax is collected…

  8. 78 FR 3892 - Turlock Irrigation District and Modesto Irrigation District; Notice Clarifying Party Status

    Science.gov (United States)

    2013-01-17

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Turlock Irrigation District and Modesto Irrigation District; Notice Clarifying Party Status On January 9, 2013, the Modesto Irrigation District (Modesto) filed a motion for...

  9. A New Kind of School District: How Local Leaders Can Create Charter Districts. The Nuts & Bolts of Charter Districts.

    Science.gov (United States)

    Hassel, Bryan

    This short paper discusses the advantages of and outlines key design issues for creating charter districts. The design issues are divided into three categories representing the three central elements of the environment the districts are trying to create for their schools: the opportunity to perform, incentives to perform, and capacity to perform.…

  10. Atlas of water resources in the Black Hills area, South Dakota

    Science.gov (United States)

    Carter, Janet M.; Driscoll, Daniel G.; Williamson, Joyce E.; Lindquist, Van A.

    2002-01-01

    The Black Hills area is an important resource center that provides an economic base for western South Dakota through tourism, agriculture, the timber industry, and mineral resources. In addition, water originating from the area is used for municipal, industrial, agricultural, and recreational purposes throughout much of western South Dakota. The Black Hills area also is an important recharge area for aquifers in the northern Great Plains.Population growth, resource development, and periodic droughts have the potential to affect the quantity, quality, and availability of water within the Black Hills area. Growth has resulted in competing interests for available water supplies. The Black Hills Hydrology Study was initiated in 1990 to address these concerns. This long-term study is a cooperative effort between the U.S. Geological Survey (USGS), the South Dakota Department of Environment and Natural Resources, and the West Dakota Water Development District, which represents various local and county cooperators.

  11. BlackBerry For Dummies

    CERN Document Server

    Kao, Robert

    2010-01-01

    Get the most juice out of your BlackBerry handheld!. Feature-rich and complex, the BlackBerry is the number one smartphone in the corporate world is among the most popular handhelds for business users. This new and updated edition includes all the latest and greatest information on new and current BlackBerry mobile devices. Covering a range of valuable how-to topics, this helpful guide explores the BlackBerry's most useful features, techniques for getting the most out of your BlackBerry, and practical information about power usage.: Covers all aspects of the number one smartphone in the corpor

  12. The Impact of Early Literacy and Behavior Sanctions on African-American Male High School Students' Matriculation in a Selected South Carolina School District

    Science.gov (United States)

    Fitzpatrick, Raashad

    2012-01-01

    The study under investigation was the impact of early literacy and behavior sanctions on Black male matriculation towards graduation in a selected South Carolina school district. Attendance and course failure in English strongly predicted whether or not students graduated from high school. Early literacy is the foundation for academic success in…

  13. "That Racism Thing": A Critical Race Discourse Analysis of a Conflict over the Proposed Closure of a Black High School

    Science.gov (United States)

    Briscoe, Felecia M.; Khalifa, Muhammad A.

    2015-01-01

    Using critical race discourse analysis, this study examines descriptions of a heated controversy over the proposed closure of the only primarily black high school in a large urban city. Participants included community members and the district and school leaders who were key in the controversy. Based on Foucault's analysis of power we looked for…

  14. A Comparison of the Social Networks of Blacks and Whites in a Sample of Elderly in a Southern Border State.

    Science.gov (United States)

    Kernodle, R. Wayne; Kernodle, Ruth L.

    The social network of elderly blacks was compared with whites in a sample of 241 ambulatory persons interviewed in congregate settings in a planning district of a border Southern state. Questions were asked about monthly patterns of social interaction, such as visiting and phone contacts with children, other kin, neighbors, friends, involvement in…

  15. State and district policy influences on district-wide elementary and middle school physical education practices.

    Science.gov (United States)

    Chriqui, Jamie F; Eyler, Amy; Carnoske, Cheryl; Slater, Sandy

    2013-01-01

    To examine the influence of state laws and district policies on district-wide elementary school and middle school practices related to physical education (PE) time and the percentage of moderate-to-vigorous physical activity (MVPA) time during PE. Multivariate, cross-sectional analysis of state laws, district wellness and PE policies, and district PE practices for school year 2010-2011 controlling for district-level urbanicity, region, size, race/ethnicity of students, and socioeconomic status and clustered on state. One hundred ninety-five public school districts located in 42 states. District-level PE coordinators for the included districts who responded to an online survey. Minutes and days of PE per week and percent time spent in MVPA during PE time. District PE coordinators reported significantly less PE time than national standards-82.9 and 189.6 minutes at the elementary school and middle school levels, respectively. Physical education was provided an average of 2.5 and 3.7 days per week, respectively; and the percentage of MVPA time in PE was 64.4% and 65.7%, respectively. At the elementary school level, districts in either states with laws governing PE time or in a state and district with a law/policy reported significantly more days of PE (0.63 and 0.67 additional days, respectively), and districts in states with PE time laws reported 18 more minutes of PE per week. At the middle school level, state laws were associated with 0.73 more days of PE per week. Neither state laws nor district policies were positively associated with percent MVPA time in PE. State laws and district policies can influence district-level PE practices-particularly those governing the frequency and duration of PE-although opportunities exist to strengthen PE-related laws, policies, and practices.

  16. Prisons of light : black holes

    Science.gov (United States)

    Ferguson, Kitty

    What is a black hole? Could we survive a visit to one -- perhaps even venture inside? Have we yet discovered any real black holes? And what do black holes teach us about the mysteries of our Universe? These are just a few of the tantalizing questions examined in this tour-de-force, jargon-free review of one of the most fascinating topics in modern science. In search of the answers, we trace a star from its birth to its death throes, take a hypothetical journey to the border of a black hole and beyond, spend time with some of the world's leading theoretical physicists and astronomers, and take a whimsical look at some of the wild ideas black holes have inspired. Prisons of Light - Black Holes is comprehensive and detailed. Yet Kitty Ferguson's lightness of touch and down-to-earth analogies set this book apart from all others on black holes and make it a wonderfully stimulating and entertaining read.

  17. Wireless Wide Area Networks for School Districts.

    Science.gov (United States)

    Nair, Prakash

    This paper considers a basic question that many schools districts face in attempting to develop affordable, expandable district-wide computer networks that are resistant to obsolescence: Should these wide area networks (WANs) employ wireless technology, stick to venerable hard-wired solutions, or combine both. This publication explores the…

  18. New Mexico's Very Small School Districts.

    Science.gov (United States)

    Swift, Doug

    The report addresses characteristics and concerns of New Mexico's 19 smallest school districts with a 1981-82 average daily membership ranging from 262 to 60 students. Information was gathered from a Public School Finance Division questionnaire sent to the 19 superintendents; from a December 1981 meeting with 10 of the smallest districts; from…

  19. District Leaders' Framing of Educator Evaluation Policy

    Science.gov (United States)

    Woulfin, Sarah L.; Donaldson, Morgaen L.; Gonzales, Richard

    2016-01-01

    Purpose: Educator evaluation systems have recently undergone scrutiny and reform, and district and school leaders play a key role in interpreting and enacting these systems. This article uses framing theory to understand district leaders' interpretation and advancement of a state's new educator evaluation policy. Research Methods: The article…

  20. Income Segregation between Schools and School Districts

    Science.gov (United States)

    Owens, Ann; Reardon, Sean F.; Jencks, Christopher

    2016-01-01

    Although trends in the racial segregation of schools are well documented, less is known about trends in income segregation. We use multiple data sources to document trends in income segregation between schools and school districts. Between-district income segregation of families with children enrolled in public school increased by over 15% from…

  1. Performance of District Disaster Management Teams after ...

    African Journals Online (AJOL)

    Introduction: Uganda is vulnerable to several natural, man-made and a hybrid of disasters including drought, famine, floods, warfare, and disease outbreaks. We assessed the district disaster team's performance, roles and experiences following the training. Findings: The disasters most commonly experienced by the district ...

  2. Collaborative Strategic Decision Making in School Districts

    Science.gov (United States)

    Brazer, S. David; Rich, William; Ross, Susan A.

    2010-01-01

    Purpose: The dual purpose of this paper is to determine how superintendents in US school districts work with stakeholders in the decision-making process and to learn how different choices superintendents make affect decision outcomes. Design/methodology/approach: This multiple case study of three school districts employs qualitative methodology to…

  3. Superintendent Leadership: Focusing on District Culture

    Science.gov (United States)

    Donnelly, Tanya A.; Adams, Jeffery S.; Smith, Dwayne E.

    2012-01-01

    This report describes a problem-based learning project focusing on superintendent leadership and stakeholder influence of school district culture. Current research findings suggest the importance of superintendent leadership in assessing, influencing, and enhancing school district culture. Multiple scholars wrote literature in the area of…

  4. Crafting Legitimacy in District-Community Partnerships

    Science.gov (United States)

    Lechasseur, Kimberly

    2017-01-01

    Background/Context: Partnering across districts, schools, and other community organizations has become ubiquitous as a policy for promoting change. Despite growing attention to and scholarship on district-community partnerships, there is little examination of the organizational mechanisms involved in sustaining them. Purpose/Objectives: This study…

  5. Black-hole astrophysics

    Energy Technology Data Exchange (ETDEWEB)

    Bender, P. [Univ. of Colorado, Boulder, CO (United States); Bloom, E. [Stanford Linear Accelerator Center, Menlo Park, CA (United States); Cominsky, L. [Sonoma State Univ., Rohnert Park, CA (United States). Dept. of Physics and Astronomy] [and others

    1995-07-01

    Black-hole astrophysics is not just the investigation of yet another, even if extremely remarkable type of celestial body, but a test of the correctness of the understanding of the very properties of space and time in very strong gravitational fields. Physicists` excitement at this new prospect for testing theories of fundamental processes is matched by that of astronomers at the possibility to discover and study a new and dramatically different kind of astronomical object. Here the authors review the currently known ways that black holes can be identified by their effects on their neighborhood--since, of course, the hole itself does not yield any direct evidence of its existence or information about its properties. The two most important empirical considerations are determination of masses, or lower limits thereof, of unseen companions in binary star systems, and measurement of luminosity fluctuations on very short time scales.

  6. Nonsingular Black Holes

    CERN Document Server

    Olmo, Gonzalo J

    2011-01-01

    We find that if general relativity is modified at the Planck scale by a Ricci-squared term, electrically charged black holes may be nonsingular. These objects concentrate their mass in a microscopic sphere of radius $r_{core}\\approx N_q^{1/2}l_P/3$, where $l_P$ is the Planck length and $N_q$ is the number of electric charges. The singularity is avoided if the mass of the object satisfies the condition $M_0^2\\approx m_P^2 \\alpha_{em}^{3/2} N_q^3/2$, where $m_P$ is the Planck mass and $\\alpha_{em}$ is the fine-structure constant. For astrophysical black holes this amount of charge is so small that their external horizon almost coincides with their Schwarzschild radius. We work within a first-order (Palatini) approach.

  7. Asymmetric black dyonic holes

    Directory of Open Access Journals (Sweden)

    I. Cabrera-Munguia

    2015-04-01

    Full Text Available A 6-parametric asymptotically flat exact solution, describing a two-body system of asymmetric black dyons, is studied. The system consists of two unequal counterrotating Kerr–Newman black holes, endowed with electric and magnetic charges which are equal but opposite in sign, separated by a massless strut. The Smarr formula is generalized in order to take into account their contribution to the mass. The expressions for the horizon half-length parameters σ1 and σ2, as functions of the Komar parameters and of the coordinate distance, are displayed, and the thermodynamic properties of the two-body system are studied. Furthermore, the seven physical parameters satisfy a simple algebraic relation which can be understood as a dynamical scenario, in which the physical properties of one body are affected by the ones of the other body.

  8. Mobilizing Black America

    Science.gov (United States)

    1992-04-01

    of work is tempered with realism, as it 16Holzer, H. Can We Solve Black Youth Unemployment ? ChallengS, 1988, 76, p.46. in, relates to pay. The value... youth . The community must find ways to reduce the number of children born to unwed teenage mothers for many substantive reasons. Children who grow up in...volunteers commit to spend time with designated youth on a recurring basis. They generally take the young person to sporting events, museums, fishing

  9. Energy Assessment of Automated Mobility Districts

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Yuche [National Renewable Energy Laboratory (NREL), Golden, CO (United States)

    2017-08-03

    Automated vehicles (AVs) are increasingly being discussed as the basis for on-demand mobility services, introducing a new paradigm in which a fleet of AVs displace private automobiles for day-to-day travel in dense activity districts. This project examines such a concept to displace privately owned automobiles within a region containing dense activity generators (jobs, retail, entertainment, etc.), referred to as an automated mobility district (AMDs). The project reviews several such districts including airport, college campuses, business parks, downtown urban cores, and military bases, with examples of previous attempts to meet the mobility needs apart from private automobiles, some with automated technology and others with more traditional transit based solutions. The issues and benefits of AMDs are framed within the perspective of intra-district, inter-district, and border issues, and the requirements for a modeling framework are identified to adequately reflect the breadth of mobility, energy, and emissions impact anticipated with AMDs.

  10. Faunal diversity of Satara District, Maharashtra, India

    Directory of Open Access Journals (Sweden)

    Amit Sayyed

    2016-11-01

    Full Text Available Satara District of Maharashtra State is a part of northern Western Ghats and Deccan Plateau biogeographic zones.  The data on various faunal groups was collected from the extensive study carried out during the period between 2007 and 2010, covering different parts of the district.  The present study reports faunal diversity of the district with 677 species under 150 families belonging to 11 different groups.  Overall, the district has substantial faunal diversity.  Out of the total species, 94 are recorded as endemic species, 35 species are listed as threatened under the IUCN Red List of Threatened Species, and 38 species are listed in the different schedules of Indian Wildlife (Protection Act 1972 (as amended up to 2013.  The information on geographical distribution pattern of mammalian species in the district is also provided. 

  11. Solar district heating and cooling: A review

    DEFF Research Database (Denmark)

    Perez-Mora, Nicolas; Bava, Federico; Andersen, Martin

    2017-01-01

    Both district heating and solar collector systems have been known and implemented for many years. However, the combination of the two, with solar collectors supplying heat to the district heating network, is relatively new, and no comprehensive review of scientific publications on this topic could...... be found. Thus, this paper summarizes the literature available on solar district heating and presents the state of the art and real experiences in this field. Given the lack of a generally accepted convention on the classification of solar district heating systems, this paper distinguishes centralized...... and decentralized solar district heating as well as block heating. For the different technologies, the paper describes commonly adopted control strategies, system configurations, types of installation, and integration. Real‐world examples are also given to provide a more detailed insight into how solar thermal...

  12. Spin systems and Political Districting Problem

    Energy Technology Data Exchange (ETDEWEB)

    Chou, C.-I [Department of Physics, Chinese Culture University, Taipei, Taiwan 111 (China)]. E-mail: cichou@faculty.pccu.edu.tw; Li, S.-P. [Institute of Physics, Academia Sinica, Taipei, Taiwan 115 (China)

    2007-03-15

    The aim of the Political Districting Problem is to partition a territory into electoral districts subject to some constraints such as contiguity, population equality, etc. In this paper, we apply statistical physics methods to Political Districting Problem. We will show how to transform the political problem to a spin system, and how to write down a q-state Potts model-like energy function in which the political constraints can be written as interactions between sites or external fields acting on the system. Districting into q voter districts is equivalent to finding the ground state of this q-state Potts model. Searching for the ground state becomes an optimization problem, where optimization algorithms such as the simulated annealing method and Genetic Algorithm can be employed here.

  13. EPA Recognizes Charleston County School District for Reducing Food Waste

    Science.gov (United States)

    ATLANTA - Today, U.S. Environmental Protection Agency (EPA) recognized the Charleston County School District for the District's achievements in reducing food waste. The District cultivated one of the state's first student-driven commercial compostin

  14. 7 CFR 906.121 - Reestablishment of districts.

    Science.gov (United States)

    2010-01-01

    ... Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE ORANGES AND GRAPEFRUIT GROWN IN... districts of the production area specified in § 906.20 Districts are reestablished as a single district comprising the entire production area. ...

  15. Hastings Wetland Management District Annual narrative report: Calendar year 1977

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This narrative report for Hastings Wetland Management District outlines District accomplishments for the 1977 calendar year. The report begins by giving District...

  16. Attractors in Black

    CERN Document Server

    Bellucci, S; Marrani, A

    2008-01-01

    We review recent results in the study of attractor horizon geometries (with non-vanishing Bekenstein-Hawking entropy) of dyonic extremal d=4 black holes in supergravity. We focus on N=2, d=4 ungauged supergravity coupled to a number n_{V} of Abelian vector multiplets, outlining the fundamentals of the special Kaehler geometry of the vector multiplets' scalar manifold (of complex dimension n_{V}), and studying the 1/2-BPS attractors, as well as the non-BPS (non-supersymmetric) ones with non-vanishing central charge. For symmetric special Kaehler geometries, we present the complete classification of the orbits in the symplectic representation of the classical U-duality group (spanned by the black hole charge configuration supporting the attractors), as well as of the moduli spaces of non-BPS attractors (spanned by the scalars which are not stabilized at the black hole event horizon). Finally, we report on an analogous classification for N>2-extended, d=4 ungauged supergravities, in which also the 1/N-BPS attrac...

  17. Polluting Black space.

    Science.gov (United States)

    Bonam, Courtney M; Bergsieker, Hilary B; Eberhardt, Jennifer L

    2016-11-01

    Social psychologists have long demonstrated that people are stereotyped on the basis of race. Researchers have conducted extensive experimental studies on the negative stereotypes associated with Black Americans in particular. Across 4 studies, we demonstrate that the physical spaces associated with Black Americans are also subject to negative racial stereotypes. Such spaces, for example, are perceived as impoverished, crime-ridden, and dirty (Study 1). Moreover, these space-focused stereotypes can powerfully influence how connected people feel to a space (Studies 2a, 2b, and 3), how they evaluate that space (Studies 2a and 2b), and how they protect that space from harm (Study 3). Indeed, processes related to space-focused stereotypes may contribute to social problems across a range of domains-from racial disparities in wealth to the overexposure of Blacks to environmental pollution. Together, the present studies broaden the scope of traditional stereotyping research and highlight promising new directions. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

  18. [Fertility in black Africa].

    Science.gov (United States)

    Locoh, T

    1985-01-01

    The number of children per woman is between 6 and 7 children in Black Africa. Infertility and poor fertility existing in certain regions of Africa only appear in results concerning central Africa. 6-10% of births occur in women between the ages of 40 and 50. It must be noted that the goal of the majority of societies in Black Africa is to have numerous descendants. Factors of fertility in Africa examined are: precocious marriage, a long period of exposure to the risk of pregnancy, birth spacing and pathological infertility. The paper also discusses modern contraception and birth control, the improvement of sanitation conditions as part of the battle against infertility and infant mortality, combating infertility, decreasing infant mortality and governmental attitudes toward fertility control. Despite the efforts of several private and governmental agencies to promote family planning, progress in Africa has been modest. In the majority of Black African countries, women do not have access to contraception. In rural areas, the absence of an administrative infrastructure prevents diffusion of information and access to contraception. Improving general health conditions has 2 consequences on fertility: it reduces infertility due to diseases that cause sterility and it reduces infant mortality which affects birth intervals. So far birth control has only been successful among the very educated women. However, a great potential for more users exists.

  19. Malaria prevalence in endemic districts of Bangladesh.

    Science.gov (United States)

    Haque, Ubydul; Ahmed, Syed Masud; Hossain, Shahed; Huda, Mamun; Hossain, Awlad; Alam, Mohammad Shafiul; Mondal, Dinesh; Khan, Wasif Ali; Khalequzzaman, Mohammod; Haque, Rashidul

    2009-08-25

    Following the 1971 ban of DDT in Bangladesh, malaria cases have increased steadily. Malaria persists as a major health problem in the thirteen south-eastern and north-eastern districts of Bangladesh. At present the national malaria control program, largely supported by the Global Fund for AIDS, Tuberculosis and Malaria (GFATM), provides interventions including advocacy at community level, Insecticide Treated Net (ITN) distribution, introduction of Rapid Diagnostic Tests (RDT) and combination therapy with Coartem. It is imperative, therefore, that baseline data on malaria prevalence and other malaria indicators are collected to assess the effectiveness of the interventions and rationalize the prevention and control efforts. The objective of this study was to obtain this baseline on the prevalence of malaria and bed net use in the thirteen malaria endemic districts of Bangladesh. In 2007, BRAC and ICDDR,B carried out a malaria prevalence survey in thirteen malaria endemic districts of Bangladesh. A multi-stage cluster sampling technique was used and 9750 blood samples were collected. Rapid Diagnostic Tests (RDT) were used for the diagnosis of malaria. The weighted average malaria prevalence in the thirteen endemic districts was 3.97%. In five south-eastern districts weighted average malaria prevalence rate was 6.00% and in the eight north-eastern districts weighted average malaria prevalence rate was (0.40%). The highest malaria prevalence was observed in Khagrachari district. The majority of the cases (90.18%) were P. falciparum infections. Malaria morbidity rates in five south-eastern districts was 2.94%. In eight north-eastern districts, morbidity was 0.07%. Bangladesh has hypoendemic malaria with P. falciparum the dominant parasite species. The malaria situation in the five north-eastern districts of Bangladesh in particular warrants urgent attention. Detailed maps of the baseline malaria prevalence and summaries of the data collected are provided along with the

  20. Sparse district-heating in Sweden

    Energy Technology Data Exchange (ETDEWEB)

    Nilsson, Stefan Forsaeus [SP Technical Research Institute of Sweden, Building Technology and Mechanics, P.O. Box 24036, SE-400 22 Goeteborg (Sweden); Reidhav, Charlotte [Chalmers University of Technology, Department of Civil and Environmental Engineering, SE-412 96 Goeteborg (Sweden); Lygnerud, Kristina [Goeteborg University, School of Business, Economics and Law, Department of Business Administration, P.O. Box 610, SE-405 30 Goeteborg (Sweden); Werner, Sven [Chalmers University of Technology, Department of Energy and Environment, SE-412 96 Goeteborg (Sweden)

    2008-07-15

    This paper presents a review of the sparse district-heating research programme undertaken in Sweden between 2002 and 2006. The goal of the programme was to increase the future competitiveness for district heat in low heat density areas, e.g., suburban single-family houses and small villages. Such areas are unfavourable, since revenues from heat sold are low compared with the investment cost for the local distribution network. In Sweden, district heat has a dominant position in the heat market for residential and service-sector buildings. In order for the business to grow, it is necessary to increase the rate of expansion in the detached-house segment. This is why the programme was initiated. The extent of the programme was set at EUR 3.6 million with equal financing from the Swedish District-Heating Association and the Swedish Energy-Agency. The research was carried out in three phases: a state of the art survey; a development phase focused on productivity gains where new research on both technology and customer interaction was performed; and finally a demonstration phase where new methods were tested in full-scale field operation. The programme has shown that the Swedish district-heating industry needs to adjust in order to reach a higher profitability for sparse district-heating investments. Tradition from large-scale high-density district heating is hard to scale to fit sparse district-heating systems. For example, the construction becomes very labour intensive and the industry is weak when it comes to market-oriented business logic, sales and private customer interaction. Innovation seems to be a way forward and active management of innovations is a way to create increased value of the investments. Other keys to improving the profitability of sparse district-heating investments are more efficient working routines (resulting in higher productivity) and revised ways of customer communications. These seem more important than increasing efficiency in district

  1. Malaria prevalence in endemic districts of Bangladesh.

    Directory of Open Access Journals (Sweden)

    Ubydul Haque

    Full Text Available BACKGROUND: Following the 1971 ban of DDT in Bangladesh, malaria cases have increased steadily. Malaria persists as a major health problem in the thirteen south-eastern and north-eastern districts of Bangladesh. At present the national malaria control program, largely supported by the Global Fund for AIDS, Tuberculosis and Malaria (GFATM, provides interventions including advocacy at community level, Insecticide Treated Net (ITN distribution, introduction of Rapid Diagnostic Tests (RDT and combination therapy with Coartem. It is imperative, therefore, that baseline data on malaria prevalence and other malaria indicators are collected to assess the effectiveness of the interventions and rationalize the prevention and control efforts. The objective of this study was to obtain this baseline on the prevalence of malaria and bed net use in the thirteen malaria endemic districts of Bangladesh. METHODS AND PRINCIPAL FINDINGS: In 2007, BRAC and ICDDR,B carried out a malaria prevalence survey in thirteen malaria endemic districts of Bangladesh. A multi-stage cluster sampling technique was used and 9750 blood samples were collected. Rapid Diagnostic Tests (RDT were used for the diagnosis of malaria. The weighted average malaria prevalence in the thirteen endemic districts was 3.97%. In five south-eastern districts weighted average malaria prevalence rate was 6.00% and in the eight north-eastern districts weighted average malaria prevalence rate was (0.40%. The highest malaria prevalence was observed in Khagrachari district. The majority of the cases (90.18% were P. falciparum infections. Malaria morbidity rates in five south-eastern districts was 2.94%. In eight north-eastern districts, morbidity was 0.07%. CONCLUSION AND SIGNIFICANCE: Bangladesh has hypoendemic malaria with P. falciparum the dominant parasite species. The malaria situation in the five north-eastern districts of Bangladesh in particular warrants urgent attention. Detailed maps of the

  2. Black silicon solar cells with black bus-bar strings

    DEFF Research Database (Denmark)

    Davidsen, Rasmus Schmidt; Tang, Peter Torben; Mizushima, Io

    2016-01-01

    We present the combination of black silicon texturing and blackened bus-bar strings as a potential method for obtaining all-black solar panels, while using conventional, front-contacted solar cells. Black silicon was realized by maskless reactive ion etching resulting in total, average reflectance...... below 0.5% across a 156x156 mm2 silicon wafer. Four different methods to obtain blackened bus-bar strings were compared with respect to reflectance, and two of these methods (i.e., oxidized copper and etched solder) were used to fabricate functional allblack solar 9-cell panels. The black bus-bars (e.......g., by oxidized copper) have a reflectance below 3% in the entire visible wavelength range. The combination of black silicon cells and blackened bus-bars results in aesthetic, all-black panels based on conventional, front-contacted solar cells without compromising efficiency....

  3. Four Insectivorous Birds in Search of Foraging Niche in and Around an Agricultural Ecosystem of Nalgonda District of Telangana, India

    OpenAIRE

    Buddi Laxmi Narayana; Vaidyula Vasudeva Rao; Jaganathan Pandiyan

    2016-01-01

    Foraging niche of Small Green Bee-eater Merops orientalis, Indian Roller Coracias benghalensis, Common Myna Acridotheres tristis and Black Drongo Dicrurus macrocercus was studied in and around agricultural landscapes of Sherpally, Nalgonda District of Telangana, India. Data on perch types, perching height, foraging height, foraging substrates types and foraging methods were transformed into percent use. Small Green Bee-eater predominantly perched on electric power lines (67.21%), Common Myna ...

  4. Black Swan Tropical Cyclones

    Science.gov (United States)

    Emanuel, K.; Lin, N.

    2012-12-01

    Virtually all assessments of tropical cyclone risk are based on historical records, which are limited to a few hundred years at most. Yet stronger TCs may occur in the future and at places that have not been affected historically. Such events lie outside the realm of historically based expectations and may have extreme impacts. Their occurrences are also often made explainable after the fact (e.g., Hurricane Katrina). We nickname such potential future TCs, characterized by rarity, extreme impact, and retrospective predictability, "black swans" (Nassim Nicholas Taleb, 2007). As, by definition, black swan TCs have yet to happen, statistical methods that solely rely on historical track data cannot predict their occurrence. Global climate models lack the capability to predict intense storms, even with a resolution as high as 14 km (Emanuel et al. 2010). Also, most dynamic downscaling methods (e.g., Bender et al. 2010) are still limited in horizontal resolution and are too expensive to implement to generate enough events to include rare ones. In this study, we apply a simpler statistical/deterministic hurricane model (Emanuel et al. 2006) to simulate large numbers of synthetic storms under a given (observed or projected) climate condition. The method has been shown to generate realistic extremes in various basins (Emanuel et al. 2008 and 2010). We also apply a hydrodynamic model (ADCIRC; Luettich et al. 1992) to simulate the storm surges generated by these storms. We then search for black swan TCs, in terms of the joint wind and surge damage potential, in the generated large databases. Heavy rainfall is another important TC hazard and will be considered in a future study. We focus on three areas: Tampa Bay in the U.S., the Persian Gulf, and Darwin in Australia. Tampa Bay is highly vulnerable to storm surge as it is surrounded by shallow water and low-lying lands, much of which may be inundated by a storm tide of 6 m. High surges are generated by storms with a broad

  5. VT Data - Cons/Rec Overlay District 20110301, Winhall

    Data.gov (United States)

    Vermont Center for Geographic Information — Conservation and Recreatioal Protection overaly districts for the Town of Winhall, Vermont. Other overlay districts (Transfer of Development Rights, and Scenic...

  6. Black holes in realistic branes: Black string-like objects?

    Energy Technology Data Exchange (ETDEWEB)

    Bazeia, D., E-mail: bazeia@fisica.ufpb.br [Instituto de Física, Universidade de São Paulo, 05314-970, São Paulo, SP (Brazil); Departamento de Física, Universidade Federal da Paraíba, 58051-970, João Pessoa, PB (Brazil); Hoff da Silva, J.M., E-mail: hoff@feg.unesp.br [Departamento de Física e Química, Universidade Estadual Paulista, Av. Dr. Ariberto Pereira da Cunha, 333, Guaratinguetá, SP (Brazil); Rocha, Roldão da, E-mail: roldao.rocha@ufabc.edu.br [Centro de Matemática, Computação e Cognição, Universidade Federal do ABC (UFABC), 09210-170, Santo André, SP (Brazil)

    2013-04-25

    A realistic model describing a black string-like object in an expanding Universe is analyzed in the context of the McVittie's solution of the Einstein field equations. The bulk metric near the brane is provided analogously to previous solutions for black strings. In particular, we show that at least when the Hubble parameter on the brane is positive, a black string-like object seems to play a fundamental role in the braneworld scenario, generalizing the standard black strings in the context of a dynamical brane.

  7. Black holes in massive gravity

    CERN Document Server

    Babichev, Eugeny

    2015-01-01

    We review the black hole solutions of the ghost-free massive gravity theory and its bimetric extension and outline the main results on the stability of these solutions against small perturbations. Massive (bi)-gravity accommodates exact black hole solutions, analogous to those of General Relativity. In addition to these solutions, hairy black holes -- solutions with no correspondent in General Relativity -- have been found numerically, whose existence is a natural consequence of the absence of the Birkhoff's theorem in these theories. The existence of extra propagating degrees of freedom, makes the stability properties of these black holes richer and more complex than those of General Relativity. In particular, the bi-Schwarzschild black hole exhibits an unstable spherically symmetric mode, while the bi-Kerr geometry is also generically unstable, both against the spherical mode and against superradiant instabilities. If astrophysical black holes are described by these solutions, the superradiant instability o...

  8. Black Hole's 1/N Hair

    CERN Document Server

    Dvali, Gia

    2013-01-01

    According to the standard view classically black holes carry no hair, whereas quantum hair is at best exponentially weak. We show that suppression of hair is an artifact of the semi-classical treatment and that in the quantum picture hair appears as an inverse mass-square effect. Such hair is predicted in the microscopic quantum description in which a black hole represents a self-sustained leaky Bose-condensate of N soft gravitons. In this picture the Hawking radiation is the quantum depletion of the condensate. Within this picture we show that quantum black hole physics is fully compatible with continuous global symmetries and that global hair appears with the strength B/N, where B is the global charge swallowed by the black hole. For large charge this hair has dramatic effect on black hole dynamics. Our findings can have interesting astrophysical consequences, such as existence of black holes with large detectable baryonic and leptonic numbers.

  9. Louisiana State Senate Districts from LEGIS source data, Geographic NAD83, LOSCO (2004) [la_senate_districts_LEGIS_2003

    Data.gov (United States)

    Louisiana Geographic Information Center — Louisiana State Senate Districts. The district boundaries are the result of legislative acts and redistricting. Reapportionment (redistricting) occurs during the...

  10. Louisiana State House Districts from LEGIS source data, Geographic NAD83, LOSCO (2004) [la_house_districts_LEGIS_2004

    Data.gov (United States)

    Louisiana Geographic Information Center — Louisiana State House Districts. The district boundaries are the result of legislative acts and redistricting. Reapportionment (redistricting) occurs during the next...

  11. Personality characteristics of black adolescents.

    Science.gov (United States)

    Brown, N W

    1977-01-01

    Four hundred and forty-six poor, Black, urban and rural adolescents ages 15-18 enrolled in a summer poverty-work program were administered Gough's Adjective Checklist (ACL) and Holland's Vocational Preference Inventory (VPI). Significant sex differences were found on 12 of the 24 ACL scales with Black females tending to score higher on all differing scales. The VPI scores were compared with Black College students' scores and significant differences were found on most of the 11 VPI scales.

  12. District-heating system, La Grande, Oregon

    Energy Technology Data Exchange (ETDEWEB)

    1982-01-01

    The area suggested for district heating feasibility study encompassed slightly over 400 acres extending north and south from the geographic center of the city. This district was subdivided into 8 areas, which include the Grande Ronde Hospital, Eastern Oregon State College, La Grande school district, one institutional area, one commercial area and three residential areas. Basic space heating loads developed for the various areas after a survey by county personnel and computation using a computer program form the basis for this economic feasibility study.

  13. Black-on-black homicide: Kansas City's response.

    Science.gov (United States)

    Mitchell, M A; Daniels, S

    1989-01-01

    In many metropolitan areas, homicide continues to be the scourge of black Americans despite increasing awareness of the overrepresentation of blacks among victims and perpetrators. The risk of being a homicide victim among black males is so high that the Department of Health and Human Services has set a priority of reducing the risk to 60 per 100,000 by 1990. The recent escalation in the number of homicides in the United States associated with drugs makes attainment of that goal unlikely. In Kansas City, a black community grassroots organization, the Ad Hoc Group Against Crime, commissioned a multidisciplinary task force to study black-on-black homicide in 1986. The report generated by this task force identified factors placing Kansas Citians at high risk of being homicide victims or perpetrators, including being black, male, unemployed, between the ages 17-29, a high school nongraduate, frequently involved in or around violence, and having prior arrests on weapons charges. One hundred recommendations were made, of which 12 were targeted for immediate implementation. These included increasing public awareness of the incidence of black-on-black homicide, involvement of black men in role model programs for young black males, training in anger control and alternatives to violence for those identified as being at high risk for homicide, and providing a role for ex-offenders in violence prevention. Working with community organizations has inherent strengths and weaknesses for public health workers. However, such a group can successfully impact the affected community in ways which would be difficult for traditional resources.

  14. Black holes and the multiverse

    Energy Technology Data Exchange (ETDEWEB)

    Garriga, Jaume [Departament de Fisica Fonamental i Institut de Ciencies del Cosmos, Universitat de Barcelona, Marti i Franques, 1, Barcelona, 08028 Spain (Spain); Vilenkin, Alexander; Zhang, Jun, E-mail: jaume.garriga@ub.edu, E-mail: vilenkin@cosmos.phy.tufts.edu, E-mail: jun.zhang@tufts.edu [Institute of Cosmology, Tufts University, 574 Boston Ave, Medford, MA, 02155 (United States)

    2016-02-01

    Vacuum bubbles may nucleate and expand during the inflationary epoch in the early universe. After inflation ends, the bubbles quickly dissipate their kinetic energy; they come to rest with respect to the Hubble flow and eventually form black holes. The fate of the bubble itself depends on the resulting black hole mass. If the mass is smaller than a certain critical value, the bubble collapses to a singularity. Otherwise, the bubble interior inflates, forming a baby universe, which is connected to the exterior FRW region by a wormhole. A similar black hole formation mechanism operates for spherical domain walls nucleating during inflation. As an illustrative example, we studied the black hole mass spectrum in the domain wall scenario, assuming that domain walls interact with matter only gravitationally. Our results indicate that, depending on the model parameters, black holes produced in this scenario can have significant astrophysical effects and can even serve as dark matter or as seeds for supermassive black holes. The mechanism of black hole formation described in this paper is very generic and has important implications for the global structure of the universe. Baby universes inside super-critical black holes inflate eternally and nucleate bubbles of all vacua allowed by the underlying particle physics. The resulting multiverse has a very non-trivial spacetime structure, with a multitude of eternally inflating regions connected by wormholes. If a black hole population with the predicted mass spectrum is discovered, it could be regarded as evidence for inflation and for the existence of a multiverse.

  15. Thermodynamics of Accelerating Black Holes.

    Science.gov (United States)

    Appels, Michael; Gregory, Ruth; Kubizňák, David

    2016-09-23

    We address a long-standing problem of describing the thermodynamics of an accelerating black hole. We derive a standard first law of black hole thermodynamics, with the usual identification of entropy proportional to the area of the event horizon-even though the event horizon contains a conical singularity. This result not only extends the applicability of black hole thermodynamics to realms previously not anticipated, it also opens a possibility for studying novel properties of an important class of exact radiative solutions of Einstein equations describing accelerated objects. We discuss the thermodynamic volume, stability, and phase structure of these black holes.

  16. Consensus and Neo-Conservatism in the Black Community: A Theoretical Analysis of Black Leadership.

    Science.gov (United States)

    Davis, Richard A.

    1988-01-01

    A schism is developing between Black leadership and the Black community because contemporary Black leaders are probably more conservative than their traditional counterparts. This is due in part to a shift in the institutional basis of Black leadership. (BJV)

  17. Thermal BEC Black Holes

    Directory of Open Access Journals (Sweden)

    Roberto Casadio

    2015-10-01

    Full Text Available We review some features of Bose–Einstein condensate (BEC models of black holes obtained by means of the horizon wave function formalism. We consider the Klein–Gordon equation for a toy graviton field coupled to a static matter current in a spherically-symmetric setup. The classical field reproduces the Newtonian potential generated by the matter source, while the corresponding quantum state is given by a coherent superposition of scalar modes with a continuous occupation number. An attractive self-interaction is needed for bound states to form, the case in which one finds that (approximately one mode is allowed, and the system of N bosons can be self-confined in a volume of the size of the Schwarzschild radius. The horizon wave function formalism is then used to show that the radius of such a system corresponds to a proper horizon. The uncertainty in the size of the horizon is related to the typical energy of Hawking modes: it decreases with the increasing of the black hole mass (larger number of gravitons, resulting in agreement with the semiclassical calculations and which does not hold for a single very massive particle. The spectrum of these systems has two components: a discrete ground state of energy m (the bosons forming the black hole and a continuous spectrum with energy ω > m (representing the Hawking radiation and modeled with a Planckian distribution at the expected Hawking temperature. Assuming the main effect of the internal scatterings is the Hawking radiation, the N-particle state can be collectively described by a single-particle wave-function given by a superposition of a total ground state with energy M = Nm and Entropy 2015, 17 6894 a Planckian distribution for E > M at the same Hawking temperature. This can be used to compute the partition function and to find the usual area law for the entropy, with a logarithmic correction related to the Hawking component. The backreaction of modes with ω > m is also shown to reduce

  18. The Superstrong Black Mother

    OpenAIRE

    Elliott, Sinikka; Reid, Megan

    2016-01-01

    Baltimore mother Toya Graham became a viral video sensation after being filmed yelling at and hitting her teen son. Graham, who is Black, was trying to stop her son from joining the protests following Freddie Gray’s death in police custody in Baltimore in April 2015. Dubbed “mother of the year,” news outlets applauded Graham for her fierce determination to keep her son out of harm’s way by any means necessary. The media and ensuing public response to the video are illuminating for what they s...

  19. stu Black Holes Unveiled

    CERN Document Server

    Bellucci, S; Marrani, A; Yeranyan, A

    2008-01-01

    The general solutions of the radial attractor flow equations for extremal black holes, both for non-BPS with non-vanishing central charge Z and for Z=0, are obtained for the so-called stu model, the minimal rank-3 N=2 symmetric supergravity in d=4 space-time dimensions. Comparisons with previous results, as well as the fake supergravity (first order) formalism and an analysis of the BPS bound all along the non-BPS attractor flows and of the marginal stability of corresponding D-brane configurations, are given.

  20. stu Black Holes Unveiled

    Science.gov (United States)

    Bellucci, Stefano; Ferrara, Sergio; Marrani, Alessio; Yeranyan, Armen

    2008-12-01

    The general solutions of the radial attractor flow equations for extremal black holes, both for non-BPS with non-vanishing central charge Z and for Z = 0, are obtained for the so-called stu model, the minimal rank-3 N = 2 symmetric supergravity in d = 4 space-time dimensions. Comparisons with previous results, as well as the fake supergravity (first order) formalism and an analysis of the BPS bound all along the non-BPS attractor flows and of the marginal stability of corresponding D-brane configurations, are given.

  1. Black hole squeezers

    Science.gov (United States)

    Su, Daiqin; Ho, C. T. Marco; Mann, Robert B.; Ralph, Timothy C.

    2017-09-01

    We show that the gravitational quasinormal modes (QNMs) of a Schwarzschild black hole play the role of a multimode squeezer that can generate particles. For a minimally coupled scalar field, the QNMs "squeeze" the initial state of the scalar field (even for the vacuum) and produce scalar particles. The maximal squeezing amplitude is inversely proportional to the cube of the imaginary part of the QNM frequency, implying that the particle generation efficiency is higher for lower decaying QNMs. Our results show that the gravitational perturbations can amplify Hawking radiation.

  2. Magnonic Black Holes

    Science.gov (United States)

    Roldán-Molina, A.; Nunez, Alvaro S.; Duine, R. A.

    2017-02-01

    We show that the interaction between the spin-polarized current and the magnetization dynamics can be used to implement black-hole and white-hole horizons for magnons—the quanta of oscillations in the magnetization direction in magnets. We consider three different systems: easy-plane ferromagnetic metals, isotropic antiferromagnetic metals, and easy-plane magnetic insulators. Based on available experimental data, we estimate that the Hawking temperature can be as large as 1 K. We comment on the implications of magnonic horizons for spin-wave scattering and transport experiments, and for magnon entanglement.

  3. Magnonic Black Holes.

    Science.gov (United States)

    Roldán-Molina, A; Nunez, Alvaro S; Duine, R A

    2017-02-10

    We show that the interaction between the spin-polarized current and the magnetization dynamics can be used to implement black-hole and white-hole horizons for magnons-the quanta of oscillations in the magnetization direction in magnets. We consider three different systems: easy-plane ferromagnetic metals, isotropic antiferromagnetic metals, and easy-plane magnetic insulators. Based on available experimental data, we estimate that the Hawking temperature can be as large as 1 K. We comment on the implications of magnonic horizons for spin-wave scattering and transport experiments, and for magnon entanglement.

  4. Artificial black holes

    CERN Document Server

    Visser, Matt; Volovik, Grigory E

    2009-01-01

    Physicists are pondering on the possibility of simulating black holes in the laboratory by means of various "analog models". These analog models, typically based on condensed matter physics, can be used to help us understand general relativity (Einstein's gravity); conversely, abstract techniques developed in general relativity can sometimes be used to help us understand certain aspects of condensed matter physics. This book contains 13 chapters - written by experts in general relativity, particle physics, and condensed matter physics - that explore various aspects of this two-way traffic.

  5. Black holes under external influence £

    Indian Academy of Sciences (India)

    KTF MFF UK

    of the flux of external fields across charged and rotating black holes which are approaching extremal states. Recently this effect has been shown to occur for black hole solutions in string theory. We also discuss black holes surrounded by rings and disks and rotating black holes accelerated by strings. Keywords. Black holes ...

  6. The Gifted Black Child: Problems and Promise.

    Science.gov (United States)

    Howard, John R.

    In this paper, it is noted that there are three reasons for studying the black gifted child. First, black destiny has in part been shaped by talented blacks--for example, Malcolm X and Martin Luther King. Second, the black gifted are a minority within a minority. The gifted black female, subject to sexism, is even more of a minority. Third,…

  7. Surfing a Black Hole

    Science.gov (United States)

    2002-10-01

    Star Orbiting Massive Milky Way Centre Approaches to within 17 Light-Hours [1] Summary An international team of astronomers [2], lead by researchers at the Max-Planck Institute for Extraterrestrial Physics (MPE) , has directly observed an otherwise normal star orbiting the supermassive black hole at the center of the Milky Way Galaxy. Ten years of painstaking measurements have been crowned by a series of unique images obtained by the Adaptive Optics (AO) NAOS-CONICA (NACO) instrument [3] on the 8.2-m VLT YEPUN telescope at the ESO Paranal Observatory. It turns out that earlier this year the star approached the central Black Hole to within 17 light-hours - only three times the distance between the Sun and planet Pluto - while travelling at no less than 5000 km/sec . Previous measurements of the velocities of stars near the center of the Milky Way and variable X-ray emission from this area have provided the strongest evidence so far of the existence of a central Black Hole in our home galaxy and, implicitly, that the dark mass concentrations seen in many nuclei of other galaxies probably are also supermassive black holes. However, it has not yet been possible to exclude several alternative configurations. In a break-through paper appearing in the research journal Nature on October 17th, 2002, the present team reports their exciting results, including high-resolution images that allow tracing two-thirds of the orbit of a star designated "S2" . It is currently the closest observable star to the compact radio source and massive black hole candidate "SgrA*" ("Sagittarius A") at the very center of the Milky Way. The orbital period is just over 15 years. The new measurements exclude with high confidence that the central dark mass consists of a cluster of unusual stars or elementary particles, and leave little doubt of the presence of a supermassive black hole at the centre of the galaxy in which we live . PR Photo 23a/02 : NACO image of the central region of the Milky Way

  8. Black Interpretation, Black American Literature, and Grey Audiences.

    Science.gov (United States)

    Washington, Earl M.

    1981-01-01

    Defines and illustrates language techniques used by Black authors writing to and for Blacks in the 1960s and 1970s. Suggests how language and theme barriers of such literature might be overcome in a contemporary integrated oral interpretation classroom. (PD)

  9. Foraging behavior of selected insectivorous birds in Cauvery Delta region of Nagapattinam District, Tamil Nadu, India

    Directory of Open Access Journals (Sweden)

    S. Asokan

    2010-02-01

    Full Text Available This paper reports the foraging behavior of five insectivorous birds, namely White-breasted Kingfisher Halcyon smyrnensis, Small Bee-eater Merops orientalis, Indian Roller Coracias benghalensis, Common Myna Acridotheres tristis and Black Drongo Dicrurus macrocercus in Nagapattinam District of Tamil Nadu, India. The birds used a variety of perch types for hunting insect prey; in general the electric power line was a common perch type used by all species except the Common Myna. The perching and foraging height used by birds were classified into 3 meter categories, up to 12m. Aerial feeding or hawking in Bee-eaters and ground feeding in Common Mynas were major feeding techniques, recorded 68% and 86% of the time respectively. The other three species used gleaning as a feeding technique. The highest niche overlap was recorded between Indian Rollers and Black Drongos and between White-breasted Kingfishers and Indian Rollers.

  10. Diet of three insectivorous birds in Nagapattinam District, Tamil Nadu, India - a preliminary study

    Directory of Open Access Journals (Sweden)

    S. Asokan

    2009-06-01

    Full Text Available The dietary composition of the White-breasted Kingfisher Halcyon smyrnensis, the Small Bee-eater Merops orientalis and the Black Drongo Dicrurus macrocercus was studied between 2005 and 2006 in Nagapattinam District, Tamil Nadu, India by analyzing regurgitated pellets. The analysis revealed that the White-breasted Kingfisher preys mainly on arthropods (83.40% and less on vertebrates; seven orders of insects were identified, with Coleoptera, Hemiptera, Hymenoptera and Orthoptera predominant. The small bee-eater diet is composed of Coleoptera (22.3%, Hymenoptera (20.8%, Hemiptera (14.1%, Orthoptera (12.6%, Odonata (10.7%, Lepidoptera (10.4% and Diptera (8.6%. Beetles were also found to be the most frequent prey (23.7% in the diet of black drongos, followed by Hemiptera (21.6%, Orthoptera (19.3%, Hymenoptera (14.4%, Lepidoptera (7.5%, Diptera (6.8% and Odonata (6.0%.

  11. Black hairy tongue syndrome.

    Science.gov (United States)

    Gurvits, Grigoriy E; Tan, Amy

    2014-08-21

    Black hairy tongue (BHT) is a benign medical condition characterized by elongated filiform lingual papillae with typical carpet-like appearance of the dorsum of the tongue. Its prevalence varies geographically, typically ranging from 0.6% to 11.3%. Known predisposing factors include smoking, excessive coffee/black tea consumption, poor oral hygiene, trigeminal neuralgia, general debilitation, xerostomia, and medication use. Clinical presentation varies but is typically asymptomatic, although aesthetic concerns are common. Differential diagnosis includes pseudo-BHT, acanthosis nigricans, oral hairy leukoplakia, pigmented fungiform papillae of the tongue, and congenital melanocytic/melanotic nevi/macules. Clinical diagnosis relies on visual observation, detailed history taking, and occasionally microscopic evaluation. Treatment involves identification and discontinuation of the offending agent, modifications of chronic predisposing factors, patient's re-assurance to the benign nature of the condition, and maintenance of adequate oral hygiene with gentle debridement to promote desquamation. Complications of BHT (burning mouth syndrome, halitosis, nausea, gagging, dysgeusia) typically respond to therapy. Prognosis is excellent with treatment of underlying medical conditions. BHT remains an important medical condition which may result in additional burden on the patient and health care system and requires appropriate prevention, recognition and treatment.

  12. Allegheny County Magisterial Districts Outlines (2015)

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This dataset shows the magisterial districts in Allegheny County. If viewing this description on the Western Pennsylvania Regional Data Center’s open data portal...

  13. FOUNDING OF THE DISTRICT HOSPITAL IN NIS

    Directory of Open Access Journals (Sweden)

    Misa Zivic

    2007-01-01

    Full Text Available After the liberation of Nis from the Turks which took place on January 11th, 1878, there were two military hospitals: one was next to The Skull Tower and the other on the road to Leskovac and there was Islahana the civil institution which was not the forerunner of the district hospital in Nis. At first, they founded the military hospital in Nis in 1878 and then they founded The District Hospital on July 17th in 1881. The first director of the District hospital was Anton Zajicek. He is also the first graduated medical doctor in Nis. The District Hospital was situated on the left bank of the Nisava river in a private house.

  14. Allegheny County Voting District (2015) Web Map

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This webmap demarcates municipal voting districts in Allegheny County. If viewing this description on the Western Pennsylvania Regional Data Center’s open data...

  15. Allegheny County Voting District (2016) Web Map

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This webmap demarcates municipal voting districts in Allegheny County. If viewing this description on the Western Pennsylvania Regional Data Center’s open data...

  16. VT Tax Increment Financing (TIF) Districts

    Data.gov (United States)

    Vermont Center for Geographic Information — Tax Increment Financing (TIF) Districts is established by a municipality around an area that requires public infrastructure to encourage public and private real...

  17. Hammond Sanitary District Clean Water Act Settlement

    Science.gov (United States)

    The Hammond Sanitary District (HSD), located in Hammond, Indiana, serves over 170,000 customers in the City of Hammond and Town of Munster, and also provides wastewater treatment to the customer communities of Highland, and Griffith.

  18. Moving Women Up the District Ladder

    National Research Council Canada - National Science Library

    Merri Rosenberg

    2017-01-01

    ..., was clearly moving on a fast track. [...]when her husband, who works in educational technology in another Ohio district, spotted a promotional notice on the AASA website about the association's upcoming Women's Leadership Consortium...

  19. 7 CFR 917.14 - District.

    Science.gov (United States)

    2010-01-01

    ... line from the northeast corner of Solano County to the town of Rio Vista. (d) El Dorado District... includes and consists of Alameda County, Monterey County, Santa Clara County, San Mateo County, Santa Cruz...

  20. School District Finance Survey, 2013-14

    Data.gov (United States)

    Department of Education — School District Finance Survey, 2013–14 (F-33 2013–14) is a study that is part of the Common Core of Data (CCD) program; program data is available since 1989–90 at ....

  1. NM Property Tax Districts November 2010

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This layer represents boundaries for New Mexico tax district "OUT" categories and incorporated/municipal "IN" categories as identified on the "Certificate of Tax...

  2. Performance analysis of hybrid district heating system

    DEFF Research Database (Denmark)

    Mikulandric, Robert; Krajačić, Goran; Khavin, Gennadii

    2013-01-01

    could reach up to 20% with utilisation of solar energy as supplement energy source in traditional fossil fuel based district heating systems. In this work, the performance of hybrid district energy system for a particular location will be analysed. For performance analysis, mathematical model...... more extensively used in district heating systems either separately or as a supplement to traditional fossil fuels in order to achieve national energy policy objectives. However, they are still facing problems such as high intermittences, high energy production costs and low load factors as well...... sources that can complement each other on daily and yearly basis and reduce negative aspects of particular energy source utilisation. In district heating systems, hybridisation could be performed through utilisation of renewable and non-renewable energy sources. Potential of fuel and emission reduction...

  3. Narrative Report Fergus Falls Wetland Management District

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Minnesota Wetlands Complex outlines District accomplishments for FY 1974. The report begins by summarizing the weather conditions,...

  4. Windom Wetland Management District : Fiscal Year 2002

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Windom Wetland Management District summarizes activities during the 2002 fiscal year. The report begins with an introduction to the...

  5. 7 CFR 906.20 - Districts.

    Science.gov (United States)

    2010-01-01

    ... and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE ORANGES AND GRAPEFRUIT GROWN IN LOWER... determining the basis for selecting producer committee members the following districts of the production area...

  6. Minnesota Wild and Scenic River Districts

    Data.gov (United States)

    Minnesota Department of Natural Resources — District boundaries for wild, scenic, and recreational rivers designated under the Minnesota State Wild and Scenic Rivers Act. Includes portions of the Minnesota...

  7. Optimising corrosion monitoring in district heating systems

    DEFF Research Database (Denmark)

    Hilbert, Lisbeth Rischel; Thorarinsdottir, R.I.; Andersen, A.

    2002-01-01

    A three-year project - financially supported by the Nordic Industrial Fund - on monitoring of corrosion in district heating systems has been initiated with participation of researchers and industrial partners in Denmark, Finland, Iceland, Norway and Sweden. The primary objective of the project...... is to improve the quality control in district heating systems by corrosion monitoring. In Danish systems electrochemical impedance spectroscopy (EIS), linear polarisation resistance (LPR), high-sensitive electrical resistance (ER) technology, crevice corrosion probes, as well as weight loss coupons...

  8. District heating substations - design and installation

    Energy Technology Data Exchange (ETDEWEB)

    2004-12-15

    These technical regulations for district heating substations are sector-wide regulations for the Swedish district heating sector, describing the design, installation, use and maintenance of substations. If a district heating substation is to operate in the best possible way, the building's space heating and domestic hot water systems must comply with the requirements in these regulations and with those issued by public authorities. These regulations also describe aspects that must be considered when substations need to be replaced. The use then of correct values for the building energy requirements ensures that the new substation will be properly matched to its duties. These regulations are intended for use by: - those responsible for contacts between the district heating supplier and the customer. - those who own, operate and/or administer a building or facility that is heated by district heating. - those who design, manufacture, purchase, test or install substations. It is recommended that enquiries should refer to the Swedish District Heating Association's technical regulations when specifying requirements. The procurement criteria described in these regulations should be applied when evaluating tenders

  9. Area spectrum of slowly rotating black holes

    OpenAIRE

    Myung, Yun Soo

    2010-01-01

    We investigate the area spectrum for rotating black holes which are Kerr and BTZ black holes. For slowly rotating black holes, we use the Maggiore's idea combined with Kunstatter's method to derive their area spectra, which are equally spaced.

  10. New entropy formula for Kerr black holes

    OpenAIRE

    Gonzalez, Hernan; Grumiller, Daniel; Merbis, Wout; Wutte, Raphaela

    2017-01-01

    We introduce a new entropy formula for Kerr black holes inspired by recent results for 3-dimensional black holes and cosmologies with soft Heisenberg hair. We show that also Kerr-Taub-NUT black holes obey the same formula.

  11. Resource recovery from black water

    NARCIS (Netherlands)

    Graaff, de M.S.

    2010-01-01

    New sanitation systems based on separation at source offer a large potential for resource recovery from wastewater, e.g. energy and nutrients from black water and irrigation water from grey water. This review focuses on the components in source separated black water. The treatment options for the

  12. A Metatheory for Black Communication.

    Science.gov (United States)

    Asante, Molefi Kete

    In devising an inventional scheme for considering black communication behavior with possible implications for a more general theory, four constituents must be considered: frame of mind, scope of context, structure of code, and delivery of message. The concepts of rhythm and styling seem indicative of the black frame of mind, while the contextual…

  13. Educating Black Males with Dyslexia

    Science.gov (United States)

    Robinson, Shawn Anthony

    2013-01-01

    Much of the scholarship on Black males in the educational literature focuses on the achievement gap; their underrepresentation in gifted and advanced placement programs; their overrepresentation in special education programs and their high rates of school suspensions and expulsions. Although overrepresented in special education, Black males with…

  14. Personality Characteristics of Black Adolescents

    Science.gov (United States)

    Brown, Nina W.

    1977-01-01

    This research attempted to determine 1) the personality profiles of disadvantaged Black adolescents on Holland's Vocational Preference Inventory (VPI) and Gough's Adjective Checklist (ACL), 2) if this group differed significantly on the VPI from Blacks attending college, and 3) what implications for programming and planning could be determined…

  15. Black-Hole Mass Measurements

    DEFF Research Database (Denmark)

    Vestergaard, Marianne

    2004-01-01

    The applicability and apparent uncertainties of the techniques currently available for measuring or estimating black-hole masses in AGNs are briefly summarized.......The applicability and apparent uncertainties of the techniques currently available for measuring or estimating black-hole masses in AGNs are briefly summarized....

  16. Black Holes in Our Universe

    Indian Academy of Sciences (India)

    Black holes are bits of space, or more precisely, 'space-time', from which even light cannot escape, because they are regions of extremely strong gravity. We now know that black holes, es- pecially those that are a million times heavier than our Sun or more, i.e., 'supermassive', are abundant in our universe, occur- ring in the ...

  17. The Controversy around Black History.

    Science.gov (United States)

    Pitre, Abul; Ray, Ruth

    2002-01-01

    Controversy over black history began in 1926, when Carter G. Woodson introduced Negro history week, and has continued into the 21st century. Proponents of black history believe it promotes diversity, develops self-esteem, and corrects myths and stereotypes. Opponents argue it is dishonest, divisive, and lacks academic credibility and rigor.…

  18. Teaching Black History after Obama

    Science.gov (United States)

    Sotiropoulos, Karen

    2017-01-01

    This article is a reflection on the teaching of black history after the Obama presidency and at the dawn of the Trump era. It is both an analysis of the state of the academic field and a primer on how to integrate the past few decades of scholarship in black history broadly across standard K-12 curriculum. It demonstrates the importance of…

  19. ATLAS simulated black hole event

    CERN Multimedia

    Pequenão, J

    2008-01-01

    The simulated collision event shown is viewed along the beampipe. The event is one in which a microscopic-black-hole was produced in the collision of two protons (not shown). The microscopic-black-hole decayed immediately into many particles. The colors of the tracks show different types of particles emerging from the collision (at the center).

  20. Black Dialect: Myth and Reality.

    Science.gov (United States)

    Gantt, Walter

    Based on transcribed conversations with black children in kindergarten and the intermediate grades, a study was devised to determine whether black urban children from lower socioeconomic areas speak a systematic, consistent form of nonstandard English, and if so, to provide a syntactical analysis of the dialect of nonstandard speakers. Speech…

  1. Black raspberry: Korean vs. American

    Science.gov (United States)

    This fact sheet shows Korean black raspberry (Rubus coreanus) fruit, flower, and leaf features that distinguish them from their Rubus relatives, black raspberry (R. occidentalis) native to America. Common names with fruit characteristics, including berry size and pigment fingerprints, are summarized...

  2. A Black Professor's Journey Home.

    Science.gov (United States)

    Griffith, Albert R.

    1979-01-01

    The author reports on his experiences as a Black American travelling in Nigeria and Ghana. He reviews the many similarities and the few differences between the Black American and the African experience from the broad perspectives of philosophy, psychology, sociology, and art. (Author/MC)

  3. Biomass universal district heating systems

    Directory of Open Access Journals (Sweden)

    Soltero Victor Manuel

    2017-01-01

    Full Text Available In mild climate regions Directive 27/2012 EU application for developing sustainable district heating networks in consolidated urban nucleus is a challenge. In Spain most of the municipalities above 5,000 inhabitants have a reliable natural gas network and individual heating systems at homes. In this work a new heating network paradigm is proposed, the biomass universal heating network in rural areas. This model involves all the economic, legal and technical aspects and interactions between the different agents of the systems: provider company, individual and collective end-users and local and regional administration. The continental region in Spain has 588 municipalities with a population above 1,500 inhabitants close to forest biomass with renewable use. In many of these cases the regulation identifies the ownership of the forest resources use. The universal heating networks are a great opportunity for energy saving of 2,000 GWh, avoiding 2.7 million tons of CO2 emissions and with a global annual savings for end users of 61.8 million of euros. The presented model is easily extrapolated to other small municipalities in Europe. The real application of the model is presented for three municipalities in different locations of Spain where Universal Heating Networks are under development. The analysis show the interest of the integrated model for the three cases with different structural agents and relationships between them. The use of sustainable forest resources, extracted and managed by local companies, strengths circular economy in the region with a potential global economic impact above 200 M€.

  4. Biomass universal district heating systems

    Science.gov (United States)

    Soltero, Victor Manuel; Rodríguez-Artacho, Salvador; Velázquez, Ramón; Chacartegui, Ricardo

    2017-11-01

    In mild climate regions Directive 27/2012 EU application for developing sustainable district heating networks in consolidated urban nucleus is a challenge. In Spain most of the municipalities above 5,000 inhabitants have a reliable natural gas network and individual heating systems at homes. In this work a new heating network paradigm is proposed, the biomass universal heating network in rural areas. This model involves all the economic, legal and technical aspects and interactions between the different agents of the systems: provider company, individual and collective end-users and local and regional administration. The continental region in Spain has 588 municipalities with a population above 1,500 inhabitants close to forest biomass with renewable use. In many of these cases the regulation identifies the ownership of the forest resources use. The universal heating networks are a great opportunity for energy saving of 2,000 GWh, avoiding 2.7 million tons of CO2 emissions and with a global annual savings for end users of 61.8 million of euros. The presented model is easily extrapolated to other small municipalities in Europe. The real application of the model is presented for three municipalities in different locations of Spain where Universal Heating Networks are under development. The analysis show the interest of the integrated model for the three cases with different structural agents and relationships between them. The use of sustainable forest resources, extracted and managed by local companies, strengths circular economy in the region with a potential global economic impact above 200 M€.

  5. When Charged Black Holes Merge

    Science.gov (United States)

    Kohler, Susanna

    2016-08-01

    Most theoretical models assume that black holes arent charged. But a new study shows that mergers of charged black holes could explain a variety of astrophysical phenomena, from fast radio bursts to gamma-ray bursts.No HairThe black hole no hair theorem states that all black holes can be described by just three things: their mass, their spin, and their charge. Masses and spins have been observed and measured, but weve never measured the charge of a black hole and its widely believed that real black holes dont actually have any charge.That said, weve also never shown that black holes dont have charge, or set any upper limits on the charge that they might have. So lets suppose, for a moment, that its possible for a black hole to be charged. How might that affect what we know about the merger of two black holes? A recent theoretical study by Bing Zhang (University of Nevada, Las Vegas) examines this question.Intensity profile of a fast radio burst, a sudden burst of radio emission that lasts only a few milliseconds. [Swinburne Astronomy Productions]Driving TransientsZhangs work envisions a pair of black holes in a binary system. He argues that if just one of the black holes carries charge possibly retained by a rotating magnetosphere then it may be possible for the system to produce an electromagnetic signal that could accompany gravitational waves, such as a fast radio burst or a gamma-ray burst!In Zhangs model, the inspiral of the two black holes generates a global magnetic dipole thats perpendicular to the plane of the binarys orbit. The magnetic flux increases rapidly as the separation between the black holes decreases, generating an increasingly powerful magnetic wind. This wind, in turn, can give rise to a fast radio burst or a gamma-ray burst, depending on the value of the black holes charge.Artists illustration of a short gamma-ray burst, thought to be caused by the merger of two compact objects. [ESO/A. Roquette]Zhang calculates lower limits on the charge

  6. Prisons of Light - Black Holes

    Science.gov (United States)

    Ferguson, Kitty

    1998-05-01

    In this jargon-free review of one of the most fascinating topics in modern science, acclaimed science writer Kitty Ferguson examines the discovery of black holes, their nature, and what they can teach us about the mysteries of the universe. In search of the answers, we trace a star from its birth to its death throes, take a hypothetical journey to the border of a black hole and beyond, spend time with some of the world's leading theoretical physicists and astronomers, and take a whimsical look at some of the wild ideas black holes have inspired. Prisons of Light--Black Holes is comprehensive and detailed. Yet Kitty Ferguson's lightness of touch and down-to-earth analogies set this book apart from all others on black holes and make it a wonderfully stimulating and entertaining read.

  7. String-Corrected Black Holes

    Energy Technology Data Exchange (ETDEWEB)

    Hubeny, V.

    2005-01-12

    We investigate the geometry of four dimensional black hole solutions in the presence of stringy higher curvature corrections to the low energy effective action. For certain supersymmetric two charge black holes these corrections drastically alter the causal structure of the solution, converting seemingly pathological null singularities into timelike singularities hidden behind a finite area horizon. We establish, analytically and numerically, that the string-corrected two-charge black hole metric has the same Penrose diagram as the extremal four-charge black hole. The higher derivative terms lead to another dramatic effect--the gravitational force exerted by a black hole on an inertial observer is no longer purely attractive. The magnitude of this effect is related to the size of the compactification manifold.

  8. Are LIGO's Black Holes Made From Smaller Black Holes?

    Science.gov (United States)

    Kohler, Susanna

    2017-05-01

    The recent successes of the Laser Interferometer Gravitational-Wave Observatory (LIGO) has raised hopes that several long-standing questions in black-hole physics will soon be answerable. Besides revealing how the black-hole binary pairs are built, could detections with LIGO also reveal how the black holes themselves form?Isolation or HierarchyThe first detection of gravitational waves, GW150914, was surprising for a number of reasons. One unexpected result was the mass of the two black holes that LIGO saw merging: they were a whopping 29 and 36 solar masses.On the left of this schematic, two first-generation (direct-collapse) black holes form a merging binary. The right illustrates a second-generation hierarchical merger: each black hole in the final merging binary was formed by the merger of two smaller black holes. [Adapted fromGerosa et al., a simultaneously published paper that also explores the problem of hierarchical mergers and reaches similar conclusions]How do black holes of this size form? One possibility is that they form in isolation from the collapse of a single massive star. In an alternative model, they are created through the hierarchical merger of smaller black holes, gradually building up to the size we observed.A team of scientists led by Maya Fishbach (University of Chicago) suggests that we may soon be able to tell whether or not black holes observed by LIGO formed hierarchically. Fishbach and collaborators argue that hierarchical formation leaves a distinctive signature on the spins of the final black holes and that as soon as we have enough merger detections from LIGO, we can use spin measurements to statistically determine if LIGO black holes were formed hierarchically.Spins from Major MergersWhen two black holes merge, both their original spins and the angular momentum of the pair contribute to the spin of the final black hole that results. Fishbach and collaborators calculate the expected distribution of these final spins assuming that

  9. Complicated Contradictions Amid Black Feminism and Millennial Black Women Teachers Creating Curriculum for Black Girls

    Science.gov (United States)

    Nyachae, Tiffany M.

    2016-01-01

    Millennial Black women teachers wrestle with two simultaneous burdens: disrupting the racist and sexist status quo of schooling through curriculum, and employing tactics to survive school politics among their majority White women colleagues. This article describes how the "Sisters of Promise" (SOP) curriculum aligned with Black feminism…

  10. Magnetic fields around black holes

    Science.gov (United States)

    Garofalo, David A. G.

    Active Galactic Nuclei are the most powerful long-lived objects in the universe. They are thought to harbor supermassive black holes that range from 1 million solar masses to 1000 times that value and possibly greater. Theory and observation are converging on a model for these objects that involves the conversion of gravitational potential energy of accreting gas to radiation as well as Poynting flux produced by the interaction of the rotating spacetime and the electromagnetic fields originating in the ionized accretion flow. The presence of black holes in astrophysics is taking center stage, with the output from AGN in various forms such as winds and jets influencing the formation and evolution of the host galaxy. This dissertation addresses some of the basic unanswered questions that plague our current understanding of how rotating black holes interact with their surrounding magnetized accretion disks to produce the enormous observed energy. Two magnetic configurations are examined. The first involves magnetic fields connecting the black hole with the inner accretion disk and the other involves large scale magnetic fields threading the disk and the hole. We study the effects of the former type by establishing the consequences that magnetic torques between the black hole and the inner accretion disk have on the energy dissipation profile. We attempt a plausible explanation to the observed "Deep Minimum" state in the Seyfert galaxy MCG-6- 30-15. For the latter type of magnetic geometry, we study the effects of the strength of the magnetic field threading the black hole within the context of the cherished Blandford & Znajek mechanism for black hole spin energy extraction. We begin by addressing the problem in the non-relativistic regime where we find that the black hole-threading magnetic field is stronger for greater disk thickness, larger magnetic Prandtl number, and for a larger accretion disk. We then study the problem in full relativity where we show that our

  11. District Paid Insurance Programs in California School Districts 1977-78.

    Science.gov (United States)

    California School Boards Association, Sacramento.

    This publication presents 1977-78 data on employee insurance programs provided by 1,078 California school districts and county offices of education that responded to a statewide survey conducted by the California State Department of Education. Individual school districts are listed alphabetically within categories according to the type of district…

  12. What Do Effective District Leaders Do? Strategies for Evaluating District Leadership. Policy Snapshot

    Science.gov (United States)

    Hornung, Katie; Yoder, Nick

    2014-01-01

    In the wake of the Common Core State Standards and teacher evaluation reform, school leaders increasingly look to district leaders for support, coaching, and leadership. District leaders--superintendents, assistant or area superintendents, specialists, principal supervisors, and school business administrators--can hold varying and multiple roles…

  13. Malaria in Wanokaka and Loli sub-districts, West Sumba District, East Nusa Tenggara Province, Indonesia.

    NARCIS (Netherlands)

    Syafruddin, D.; Asih, P.B.; Coutrier, F.N.; Trianty, L.; Noviyanti, R.; Luase, Y.; Sumarto, W.; Caley, M.; Ven, A.J.A.M. van der; Sauerwein, R.W.

    2006-01-01

    Malaria has long been known as one of the major public health problems in West Sumba District, East Nusa Tenggara Province, Indonesia. To obtain baseline data for establishment of a suitable malaria control program in the area, malariometric surveys were conducted in two sub-districts, Wanokaka and

  14. Blue Valley School District: Kansas District Extends Growth Measurement to the Early Grades, Experiences Measurable Impact

    Science.gov (United States)

    Northwest Evaluation Association, 2016

    2016-01-01

    Blue Valley, the fourth largest school district in Kansas, covers 91 square miles. More than 20,000 K-12 students attend its 34 schools ( five high schools, nine middle schools, and 20 elementary schools). Of the district's students, 8% qualify for free and reduced lunch and about 3% are English Language Learners. Blue Valley began using Measures…

  15. Black Hole Grabs Starry Snack

    Science.gov (United States)

    2006-01-01

    [figure removed for brevity, see original site] Poster Version This artist's concept shows a supermassive black hole at the center of a remote galaxy digesting the remnants of a star. NASA's Galaxy Evolution Explorer had a 'ringside' seat for this feeding frenzy, using its ultraviolet eyes to study the process from beginning to end. The artist's concept chronicles the star being ripped apart and swallowed by the cosmic beast over time. First, the intact sun-like star (left) ventures too close to the black hole, and its own self-gravity is overwhelmed by the black hole's gravity. The star then stretches apart (middle yellow blob) and eventually breaks into stellar crumbs, some of which swirl into the black hole (cloudy ring at right). This doomed material heats up and radiates light, including ultraviolet light, before disappearing forever into the black hole. The Galaxy Evolution Explorer was able to watch this process unfold by observing changes in ultraviolet light. The area around the black hole appears warped because the gravity of the black hole acts like a lens, twisting and distorting light.

  16. District heating in Italy; Genesi ed evoluzione del district heating in Italia

    Energy Technology Data Exchange (ETDEWEB)

    Sacchi, E. [Milan Politecnico (Italy). Dip. di energetica

    1998-12-01

    The legislative act establishing the electric monopoly virtually shut out the district heating associated with electricity cogeneration, while other laws, issued to counteract the effects of oil shocks, allowed municipal utilities to do so. Thus, district heating has experienced some development, though well below its possibilities. The article analyses the reasons for this lagging, reports district heating data and projects its forecasts against the Kyoto Protocol objectives. [Italiano] La legge istitutiva del monopolio elettrico ha di fatto impedito il district heating associato alla cogenerazione di elettricita`, mentre le leggi tese a contrastare gli effetti delle crisi energetiche lo hanno reso possibile ad opera delle aziende municipali: un certo sviluppo si e` verificato, seppure ben al di sotto delle possibili potenzialita`. L`articolo analizza i motivi di questo rallentato sviluppo, riporta i dati del district heating e ne proietta le previsioni lungo gli obiettivi del Protocollo di Kyoto.

  17. The Black Matriarchy Controversy and Black Male Delinquency

    Science.gov (United States)

    Perry, Robert L.

    1976-01-01

    Notes that if the word "matriarchy" is applied correctly, the research indicates that it may be only one of the numerous original causes which might push a lower class black male into deviant behavior. (Author/AM)

  18. 77 FR 70423 - Black Bear Hydro Partners, LLC and Black Bear Development Holdings, LLC and Black Bear SO, LLC...

    Science.gov (United States)

    2012-11-26

    ... Energy Regulatory Commission Black Bear Hydro Partners, LLC and Black Bear Development Holdings, LLC and Black Bear SO, LLC; Notice of Application for Partial Transfer of Licenses, and Soliciting Comments and Motions To Intervene On October 25, 2012, Black Bear Hydro Partners, LLC, sole licensee (transferor) and...

  19. Black tongue associated with linezolid.

    Science.gov (United States)

    Jover-Diaz, Francisco; Cuadrado-Pastor, Jose-Maria; Talents-Bolos, Amparo; Martin-Gonzalez, Coral

    2010-01-01

    Darkening of the tongue and oral mucosa is a reaction pattern that can be related to a number of physiologic, metabolic, and toxic disorders, and medications and exogenous substances. Black discoloration of the tongue should be distinguished from black "hairy" tongue, which is characterized by hypertrophy of the filiform papillae. We report a case of a 42-year-old man presented with a black discoloration of his tongue during treatment with linezolid for spondylodiscitis. So in conclusion, tongue discoloration is a benign and reversible condition and a probable adverse event associated with linezolid. We present this case to increase clinicians' awareness of a new potential adverse effect of linezolid.

  20. Quantum mechanics of black holes.

    Science.gov (United States)

    Witten, Edward

    2012-08-03

    The popular conception of black holes reflects the behavior of the massive black holes found by astronomers and described by classical general relativity. These objects swallow up whatever comes near and emit nothing. Physicists who have tried to understand the behavior of black holes from a quantum mechanical point of view, however, have arrived at quite a different picture. The difference is analogous to the difference between thermodynamics and statistical mechanics. The thermodynamic description is a good approximation for a macroscopic system, but statistical mechanics describes what one will see if one looks more closely.

  1. Orbital resonances around black holes.

    Science.gov (United States)

    Brink, Jeandrew; Geyer, Marisa; Hinderer, Tanja

    2015-02-27

    We compute the length and time scales associated with resonant orbits around Kerr black holes for all orbital and spin parameters. Resonance-induced effects are potentially observable when the Event Horizon Telescope resolves the inner structure of Sgr A*, when space-based gravitational wave detectors record phase shifts in the waveform during the resonant passage of a compact object spiraling into the black hole, or in the frequencies of quasiperiodic oscillations for accreting black holes. The onset of geodesic chaos for non-Kerr spacetimes should occur at the resonance locations quantified here.

  2. Black holes and Higgs stability

    CERN Document Server

    Tetradis, Nikolaos

    2016-09-20

    We study the effect of primordial black holes on the classical rate of nucleation of AdS regions within the standard electroweak vacuum. We find that the energy barrier for transitions to the new vacuum, which characterizes the exponential suppression of the nucleation rate, can be reduced significantly in the black-hole background. A precise analysis is required in order to determine whether the the existence of primordial black holes is compatible with the form of the Higgs potential at high temperature or density in the Standard Model or its extensions.

  3. Treatment with aquatic plants by a Bagdi tribal healer of Rajbari District, Bangladesh.

    Science.gov (United States)

    Mukti, Mohsina; Rahmatullah, Mohammed

    2013-07-01

    Tribal healers mainly use land plants in their medicinal formulations; use of aquatic plants has been scarcely reported. The aim of the present study was to conduct an ethnomedicinal survey working with a Bagdi tribal healer of Rajbari District, Bangladesh. The survey was carried out working with a Bagdi healer, who lived alone in the wetlands of Rajbari District and used primarily aquatic plants for treatment. Interview of the healer was carried out with the help of a semi-structured questionnaire and the guided field-walk method. The Bagdi healer was observed to use seven different aquatic plant species coming from five plant families for treatment of ailments such as hemorrhoids, tonsillitis, heart disorders, burning sensations and pain in hands or legs, blurred vision, debility, sexual weakness in males, chronic dysentery, infertility in women, constipation, chronic leucorrhea, blackness and foul odor of menstrual blood, hair loss, graying of hair and to keep the head cool. One plant was used to treat what the healer mentioned as "evil eye", this refers to their belief in black-magic. This is the first reported instance of a Bagdi healer who primarily uses aquatic plants for treatment. Ethnomedicinal uses of a number of the plants used by the Bagdi healer have been reported for other places in India and Pakistan. Taken together, the various uses of the different plant species opens up scientific possibilities of new drug discoveries from the plants.

  4. Check list of first recorded dragonfly (Odonata: Anisoptera fauna of District Lower Dir, Khyber Pakhtunkhwa, Pakistan

    Directory of Open Access Journals (Sweden)

    Farzana Perveen

    2014-06-01

    Full Text Available The dragonflies (Odonata: Anisoptera are large, intermediate to small size, having different colours and variable morphological characters. They also carry ornamental and environmental indicator values. The first recorded, the collection of 318 dragonflies was made during May-July 2011 from district Lower Dir, Khyber Pakhtunkhwa, Pakistan. Among them 11 species of dragonflies were identified belonging to 3 families. The golden-ringed, Cordulegaster brevistigma brevistigma Selys is belonging to family Cordulegasteridae and Clubtails, Onychogomphus bistrigatus Selys is belonging to family Gomophidaed. The spine-legged redbolt, Rhodothemis rufa (Rambur; black-tailed skimmer, Orthetrum cancellatum Linnaeus; blue or black-percher, Diplacodes lefebvrei (Ramber; ground-skimmer, Diplacodes trivialis Rambur; common red-skimmer, Orthetrum pruinosum neglectum (Rambur; triangle-skimmer, Orthetrum triangulare triangulare (Selys; common-skimmer, Sympetrum decoloratum Selys; slender-skimmer, Orthetrum Sabina (Drury and wandering-glider or global-skimmer, Pantala flavescens (Fabricius are belonging to family Libellulidae. It is concluded that there is a diversity to explain dragonfly fauna from district Lower Dir.

  5. The Black Community Perspective: Recruiting Blacks into Combat Arms

    Science.gov (United States)

    2013-03-01

    of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. 1. REPORT DATE (DD...equality of treatment and opportunity for all persons in the armed services without regard to race, color, religion , or national origin.”21 This...mentor Black subordinates, which is itself a model that perpetuates of racism . Human Resources Command (HRC) should assign both White and Black combat

  6. Cryo-Etched Black Silicon for Use as Optical Black

    Science.gov (United States)

    Yee, Karl Y.; White, Victor E.; Mouroulis, Pantazis; Eastwood, Michael L.

    2011-01-01

    Stray light reflected from the surface of imaging spectrometer components in particular, the spectrometer slit degrade the image quality. A technique has been developed for rapid, uniform, and cost-effective black silicon formation based on inductively coupled plasma (ICP) etching at cryogenic temperatures. Recent measurements show less than 1-percent total reflectance from 350 2,500 nm of doped black silicon formed in this way, making it an excellent option for texturing of component surfaces for reduction of stray light. Oxygen combines with SF6 + Si etch byproducts to form a passivation layer atop the Si when the etch is performed at cryogenic temperatures. Excess flow of oxygen results in micromasking and the formation of black silicon. The process is repeatable and reliable, and provides control over etch depth and sidewall profile. Density of the needles can be controlled to some extent. Regions to be textured can be patterned lithographically. Adhesion is not an issue as the nanotips are part of the underlying substrate. This is in contrast to surface growth/deposition techniques such as carbon nanotubes (CNTs). The black Si surface is compatible with wet processing, including processing with solvents, the textured surface is completely inorganic, and it does not outgas. In radiometry applications, optical absorbers are often constructed using gold black or CNTs. This black silicon technology is an improvement for these types of applications.

  7. Erratic Black Hole Regulates Itself

    Science.gov (United States)

    2009-03-01

    New results from NASA's Chandra X-ray Observatory have made a major advance in explaining how a special class of black holes may shut off the high-speed jets they produce. These results suggest that these black holes have a mechanism for regulating the rate at which they grow. Black holes come in many sizes: the supermassive ones, including those in quasars, which weigh in at millions to billions of times the mass of the Sun, and the much smaller stellar-mass black holes which have measured masses in the range of about 7 to 25 times the Sun's mass. Some stellar-mass black holes launch powerful jets of particles and radiation, like seen in quasars, and are called "micro-quasars". The new study looks at a famous micro-quasar in our own Galaxy, and regions close to its event horizon, or point of no return. This system, GRS 1915+105 (GRS 1915 for short), contains a black hole about 14 times the mass of the Sun that is feeding off material from a nearby companion star. As the material swirls toward the black hole, an accretion disk forms. This system shows remarkably unpredictable and complicated variability ranging from timescales of seconds to months, including 14 different patterns of variation. These variations are caused by a poorly understood connection between the disk and the radio jet seen in GRS 1915. Chandra, with its spectrograph, has observed GRS 1915 eleven times since its launch in 1999. These studies reveal that the jet in GRS 1915 may be periodically choked off when a hot wind, seen in X-rays, is driven off the accretion disk around the black hole. The wind is believed to shut down the jet by depriving it of matter that would have otherwise fueled it. Conversely, once the wind dies down, the jet can re-emerge. "We think the jet and wind around this black hole are in a sort of tug of war," said Joseph Neilsen, Harvard graduate student and lead author of the paper appearing in the journal Nature. "Sometimes one is winning and then, for reasons we don

  8. Sustainability Profile for Urban Districts in Copenhagen

    DEFF Research Database (Denmark)

    Jensen, Jesper Ole

      The paper concerns the development of sustainability profiles for districts in Copenhagen. This work is currently being carried out by the Danish Building Research Institute, the Technical University of Copenhagen, and the municipality of Copenhagen. The aim of the project is to develop a first...... model for sustainability profiles for districts in Copenhagen that includes environmental, social and environmental indicators. The work is strongly inspired by the Dutch model 'DPL' (Dutch acronym for Duurzaamheid Prestatie voor een Locatie, ‘Sustainability-Profile for Districts'), which has been quite...... interest of the municipality. This allows a DPL-assessment to be carried out rather smoothly, and thus increase the use amongst municipalities. The DPL-assessment does not provide any 'scientific' correctness, but must be seen as a model open for interpretations and discussions of the local sustainability...

  9. Making Use of District and School Data

    Directory of Open Access Journals (Sweden)

    Carol S. Parke

    2012-05-01

    Full Text Available This paper describes how districts can better use their extensive student databases and other existing data to explore questions of interest. School districts are required to maintain a wealth of student information in electronic data systems and other formats. The meaningfulness of the data depends to a large degree on whether they can understand the information and use it to guide their efforts. The considerations and guidelines presented here are organized into six components which include identifying the broad area, creating specific questions, roles and trust, sample and methodology, presentation of results, and outcomes and further directions. Two examples are used throughout the paper to illustrate each component. One is from a study of high school mathematics in an urban school district, the other is from a teacher-initiated effort to better understand students' perceptions of their middle school. Recommendations are offered throughout for encouraging effective data use in decision-making.

  10. Planning analyses for geothermal district heating

    Energy Technology Data Exchange (ETDEWEB)

    Tessmer, R.G. Jr.; Karkheck, J.

    1979-12-01

    Methodology and data bases are described which can provide a comprehensive planning assessment of the potential for geothermal district heating in any US market. This economic systems model encompasses life-cycle costing over a period of rising competitive fuel prices, it addresses the expansion and financing of a district system over time, and it includes an overall optimization of system design. The elemental area for all analyses is the census tract, for which published data allow estimation of residential and commercial heating demands, building retrofit requirements, and competitive fuel consumption and cost. A system type design, an appropriate hot water district piping system, and costing of heat supply is performed for groups of contiguous tracts in any urban market. Groups are aggregated, in decreasing benefit to cost order, to achieve optimal systems. A specific application for Salt Lake City, Utah, is also described.

  11. Black Films in Search of a Home.

    Science.gov (United States)

    Taylor, Clyde

    1983-01-01

    Black filmmakers have produced many films that successfully showcase African-American culture, yet this work is rarely exposed to its intended audience. The Black bourgeoisie, because of their money and social status, must play a role in supporting Black filmmaking and fostering the perception of Black film as part of American popular culture. (GC)

  12. Accretion, primordial black holes and standard cosmology

    Indian Academy of Sciences (India)

    Primordial black holes evaporate due to Hawking radiation. We find that the evaporation times of primordial black holes increase when accretion of radiation is included. Thus, depending on accretion efficiency, more primordial black holes are existing today, which strengthens the conjecture that the primordial black holes ...

  13. The Core Journal Concept in Black Studies

    Science.gov (United States)

    Weissinger, Thomas

    2010-01-01

    Black Studies scholars have shown interest in the core journal concept. Indeed, the idea of core journals for the study of the Black experience has changed several times since 1940. While Black Studies scholars are citing Black Studies journals with frequency, they also cite traditional disciplinary journals a great deal of the time. However,…

  14. The Education and Endowment of Black Women.

    Science.gov (United States)

    Cole, Johnnetta B.

    The struggle and achievements of Black women in American society are described, emphasizing the distance that Black women still have to go to achieve equality. It is argued that education is the most consistent and obtainable means for the empowerment of Black women. The education that is advocated is one in which the conditions of Black women are…

  15. The physics of black holes

    CERN Document Server

    Susskind, Leonard

    1997-01-01

    I will describe profound revolution in our understanding of black holes and their relation to quantum mechanics that has occured over the last few years as a result of a deeper understanding of string theory.

  16. Black Liquid Solar Collector Demonstrator.

    Science.gov (United States)

    Weichman, F. L.; Austen, D. J.

    1979-01-01

    Describes the details of constructing, and use of, a solar collector. Uses a black liquid to absorb the energy, the thermosyphon effect to drive the liquid through the collector, and a floodlamp as a surrogate sun. (GA)

  17. Black esophagus - case report

    Directory of Open Access Journals (Sweden)

    Nikolić Slobodan

    2014-01-01

    Full Text Available Introduction. Diseases of the gastrointestinal system, and especially diseases of esophagus, are a rare cause of sudden unexpected death in any age group. Black esophagus is an acute necrotizing inflammation of the mucosa of the lower parts of esophagus, diffusely affecting its entire circumference. This inflammation could be a source of profuse bleeding and cause sudden unexpected death. Case Outline. A case of 76-year-old male was presented herein. He has been treated for hypertension and diabetes for several years. As a consequence of stroke, which happened several months prior to death, he had been hemiplegic and immobilized. He died in hospital, suddenly and unexpectedly. The autopsy showed the acute necrotizing esophagitis, as well as the acute gastric and duodenal erosions of mucosa. These were the causes of fatal blood loss. Conclusion. Acute necrotizing esophagitis should be recognized during autopsy and related to the immediate cause of death as well as to concomitant diseases of other organs, which either potentiate or facilitate presentation of this disease. [Projekat Ministarstva nauke Republike Srbije, br. 45005

  18. Black hole meiosis

    Science.gov (United States)

    van Herck, Walter; Wyder, Thomas

    2010-04-01

    The enumeration of BPS bound states in string theory needs refinement. Studying partition functions of particles made from D-branes wrapped on algebraic Calabi-Yau 3-folds, and classifying states using split attractor flow trees, we extend the method for computing a refined BPS index, [1]. For certain D-particles, a finite number of microstates, namely polar states, exclusively realized as bound states, determine an entire partition function (elliptic genus). This underlines their crucial importance: one might call them the ‘chromosomes’ of a D-particle or a black hole. As polar states also can be affected by our refinement, previous predictions on elliptic genera are modified. This can be metaphorically interpreted as ‘crossing-over in the meiosis of a D-particle’. Our results improve on [2], provide non-trivial evidence for a strong split attractor flow tree conjecture, and thus suggest that we indeed exhaust the BPS spectrum. In the D-brane description of a bound state, the necessity for refinement results from the fact that tachyonic strings split up constituent states into ‘generic’ and ‘special’ states. These are enumerated separately by topological invariants, which turn out to be partitions of Donaldson-Thomas invariants. As modular predictions provide a check on many of our results, we have compelling evidence that our computations are correct.

  19. Black Officer Accession and Retention

    Science.gov (United States)

    1980-05-15

    34Blame MILPERCEN, Not the Black Colleges," Army Times, Nov 79. Dillard Oliver W. "Panel Says Racism Still a Problem." Davison, Frederic E. "Black...by-case basis. No stigma should be attached to the fact that an OER appeal was notfavorably considered. * 3. Minority and Female Officers. Too Army...Director of Military Personnel Management, ODCSPER, DA, on a case-by-case basis. No stigma should be attached to the fact that an OER appeal was not

  20. Why Black Officers Still Fail

    Science.gov (United States)

    2010-03-01

    National Endowment of the Arts reported that Whites were three times as likely as Blacks to attend a classical music performance, opera or ballet ... pdf (accessed October 14, 2009). 13 Remo Butler, "Why Black Officers Fail," Parameters 29, no. 3 (Autumn 1999): 54. http://www.carlisle.army.mil...Congress, July 5, 2006, 10. http://fas.org/sgp/crs/natsec/RL33518. pdf (accessed March 4, 2010). 20 Remo Butler’s paper was written in 1996; however

  1. Linezolid induced black hairy tongue

    OpenAIRE

    Balaji, Govindan; Maharani, B.; Ravichandran, Velappan; Parthasarathi, Thiyagarajan

    2014-01-01

    Black hairy tongue (BHT) also called as lingua villosa nigra, is a self limiting benign condition characterized by hypertrophy and elongation of filiform papillae of tongue with brown or black discoloration. Smoking, poor oral hygiene, xerostomia, using peroxide containing mouth washes, substance abuse and drugs (steroids, methyldopa, olanzapine, etc) are the predisposing factors. However its occurrence in relation to linezolid ingestion among south Indians has not been reported in PubMed dat...

  2. Black rings in six dimensions

    Energy Technology Data Exchange (ETDEWEB)

    Kleihaus, Burkhard, E-mail: b.kleihaus@uni-oldenburg.de [Institut fuer Physik, Universitaet Oldenburg, D-26111 Oldenburg (Germany); Kunz, Jutta; Radu, Eugen [Institut fuer Physik, Universitaet Oldenburg, D-26111 Oldenburg (Germany)

    2013-01-08

    We propose a general framework for the numerical study of balanced black rings for any spacetime dimensions d Greater-Than-Or-Slanted-Equal-To 5. Numerical solutions are constructed in a systematic way for d=6, by solving the Einstein field equations with suitable boundary conditions. These black rings have a regular event horizon with S{sup 1} Multiplication-Sign S{sup 3} topology, and they approach the Minkowski background asymptotically. We analyze their global and horizon properties.

  3. Adoption law: a district nurse's guide.

    Science.gov (United States)

    Griffith, Richard; Tengnah, Cassam

    2011-04-01

    The Government wants to see a large rise in the use of adoption as a means of giving children a secure, loving and permanent home. Guidance coming into effect from April calls for a more pragmatic approach to adoption placements, and calls for the active promotion of the adoption process by health and social care professionals. District nurses will encounter people interested in becoming prospective adopters, but who are unsure if their background or lifestyle makes them eligible. It is essential that district nurses have a working understanding of the guidance and provisions of the Adoption and Children Act 2002 to confidently advise others about adoption and clarify any issues raised.

  4. Corrosion Fatigue in District Heating Water Tanks

    DEFF Research Database (Denmark)

    Maahn, Ernst Emanuel

    1996-01-01

    Three candidate materials for construction of buffer tanks for district heating water have been tested for corrosion fatigue properties in a district heating water environment. The investigation included Slow Strain Rate Testing of plain tensile specimens, crack initiation testing by corrosion...... fatigue of plain tensile specimens and crack growth rate determination for Compact Tensile Specimens under corrosion fatigue conditions. The three materials are equal with respect to stress corrosion sensibility and crack initiation. Crack growth rate is increased with a factor of 4-6 relative to an inert...

  5. "Be Real Black for Me": Imagining BlackCrit in Education

    Science.gov (United States)

    Dumas, Michael J.; ross, kihana miraya

    2016-01-01

    The authors put forward a theorization of a Black Critical Theory, or what might be called BlackCrit, within, and in response to, Critical Race Theory, and then outline ways that BlackCrit in education helps us to more incisively analyze how the specificity of (anti)blackness matters in explaining how Black bodies become marginalized, disregarded,…

  6. Black Hole Spin Measurement Uncertainty

    Science.gov (United States)

    Salvesen, Greg; Begelman, Mitchell C.

    2018-01-01

    Angular momentum, or spin, is one of only two fundamental properties of astrophysical black holes, and measuring its value has numerous applications. For instance, obtaining reliable spin measurements could constrain the growth history of supermassive black holes and reveal whether relativistic jets are powered by tapping into the black hole spin reservoir. The two well-established techniques for measuring black hole spin can both be applied to X-ray binaries, but are in disagreement for cases of non-maximal spin. This discrepancy must be resolved if either technique is to be deemed robust. We show that the technique based on disc continuum fitting is sensitive to uncertainties regarding the disc atmosphere, which are observationally unconstrained. By incorporating reasonable uncertainties into black hole spin probability density functions, we demonstrate that the spin measured by disc continuum fitting can become highly uncertain. Future work toward understanding how the observed disc continuum is altered by atmospheric physics, particularly magnetic fields, will further strengthen black hole spin measurement techniques.

  7. Regular black hole in three dimensions

    OpenAIRE

    Myung, Yun Soo; Yoon, Myungseok

    2008-01-01

    We find a new black hole in three dimensional anti-de Sitter space by introducing an anisotropic perfect fluid inspired by the noncommutative black hole. This is a regular black hole with two horizons. We compare thermodynamics of this black hole with that of non-rotating BTZ black hole. The first-law of thermodynamics is not compatible with the Bekenstein-Hawking entropy.

  8. An analysis of community use policies in Missouri school districts.

    Science.gov (United States)

    Eyler, Amy A; Swaller, Erin M

    2012-04-01

    Joint use or community use policies are state-, district-, or school-level policies that allow for shared use of space or facilities between a school and a city or private organization. For this study, we (1) created an inventory of community use policies within Missouri school districts; (2) analyzed the policies for content, and (3) identified district characteristics that predict the presence of a community use policy. A coding tool was developed to assess the content of collected policies. Descriptors of 515 districts was gathered from the Missouri Department of Elementary and Secondary Education website. The policies were collected via district website or phone/e-mail contact and coded. Frequency of variables and a logistic regression to predict district presence of policy were computed. Of the 515 districts in Missouri, 375 had a community use policy. Most (216) came from a policy template from the Missouri School Boards' Association or Missouri Consultants for Education (115). Only 42 districts had unique community use policies. Large or medium-sized districts were more likely to have a policy than small districts. Districts with higher percentage of students qualifying for free/reduced lunch were less likely to have a policy. Making changes to the 2 main resource templates have the potential to improve many district community use policies. Future efforts should focus on increasing policies and implementation in low resource and small districts. More research is needed on implementation and evaluation of community use policies. © 2012, American School Health Association.

  9. Rethinking Black Hole Accretion Discs

    Science.gov (United States)

    Salvesen, Greg

    Accretion discs are staples of astrophysics. Tapping into the gravitational potential energy of the accreting material, these discs are highly efficient machines that produce copious radiation and extreme outflows. While interesting in their own right, accretion discs also act as tools to study black holes and directly influence the properties of the Universe. Black hole X-ray binaries are fantastic natural laboratories for studying accretion disc physics and black hole phenomena. Among many of the curious behaviors exhibited by these systems are black hole state transitions -- complicated cycles of dramatic brightening and dimming. Using X-ray observations with high temporal cadence, we show that the evolution of the accretion disc spectrum during black hole state transitions can be described by a variable disc atmospheric structure without invoking a radially truncated disc geometry. The accretion disc spectrum can be a powerful diagnostic for measuring black hole spin if the effects of the disc atmosphere on the emergent spectrum are well-understood; however, properties of the disc atmosphere are largely unconstrained. Using statistical methods, we decompose this black hole spin measurement technique and show that modest uncertainties regarding the disc atmosphere can lead to erroneous spin measurements. The vertical structure of the disc is difficult to constrain due to our ignorance of the contribution to hydrostatic balance by magnetic fields, which are fundamental to the accretion process. Observations of black hole X-ray binaries and the accretion environments near supermassive black holes provide mounting evidence for strong magnetization. Performing numerical simulations of accretion discs in the shearing box approximation, we impose a net vertical magnetic flux that allows us to effectively control the level of disc magnetization. We study how dynamo activity and the properties of turbulence driven by the magnetorotational instability depend on the

  10. Inventory of Endangered Plants, Saint Louis District,

    Science.gov (United States)

    1977-01-01

    of this Report 3 Location of the Study Area 4 Objective 4 Endangered Species of the St. Louis District 5 Price’s Groundnut ( Apios priceana Robinson) 5...decurrens, Apios priceana, Synandra hispidula, Cypripedium candidum, Platanthera flava, Platanthera leucophaea, Platanthera peramoena, Muhlenbergia X...Illinois Apios priceana - Price’s Groundnut - Illinois Lespedeza leptostachya - Prairie Bush-clover - Illinois Petalostemum folios,-m - Prairie

  11. Demand side management for smart district heating

    DEFF Research Database (Denmark)

    Big, Oovidiu; Li, Hongwei; Svendsen, Svend

    2016-01-01

    between 25% and 35%. By making the light renovation, the heating system needs a minimum supply water temperature of 58ºC in order to cover the thermal comfort. Through extensive renovation, the supply water temperature could be reduced to 50ºC which makes it possible to transform the District Heating...

  12. Hidalgo School District Supports All Students

    Science.gov (United States)

    Nodine, Thad R.

    2012-01-01

    In 2005, the Hildago (Texas) Independent School District, in partnership with the University of Texas-Pan American, the University of Texas System, the Communities Foundation of Texas/Texas High School Project, and the Bill & Melinda Gates Foundation, promised that all of its students would earn college credits before graduating from high…

  13. Load Management in District Heating Operation

    DEFF Research Database (Denmark)

    Li, Hongwei; Wang, Stephen Jia

    2015-01-01

    Smooth operation of district heating system will avoid installation of expensive peak heat boilers, improve plant partial load performance, increase the system redundancy for further network expansion and improve its resilience to ensure security of supply during severe heating seasons. The peak...

  14. Strengthening Health Management in Districts and Provinces

    African Journals Online (AJOL)

    This publication should be sub-titled 'a facilitator's handbook', as it is essentially a set of guidelines for implementing a training programme on health management. The programme is designed primarily to improve the skills and capacity of district health mana9ement teams (DHMTs), and uses a 'problem-solving' approach.

  15. Arbitrage Interest Rules and School District Borrowing.

    Science.gov (United States)

    Weldon, Ward

    1989-01-01

    The Tax Reform Act of 1986 limited the ability of school districts to borrow money through the sale of tax-exempt bonds and then invest bond issue proceeds at interest rates higher than those paid on the bonds. Discusses practical considerations and public policy ramifications. (MLF)

  16. District heating substations. Performance, operation and design

    Energy Technology Data Exchange (ETDEWEB)

    Wollerstrand, J.

    1997-09-01

    This thesis work is concerned with the efficient layout and operation of substations, i.e. those district heating (DH) system units which connect the network and internal building heating systems, such as radiator heating systems and domestic hot water distribution networks. The ambition was to make realistic investigations closely related to practical technologies within the field

  17. SYSTEM IN ADAMI TULU DISTRICT; ETHIOPIA

    African Journals Online (AJOL)

    maturity of host on seasonal dynamics in relative density of helminthes ova in Rift Valley goats ... The study was conducted in Adami Tulu district, which is located at 160 km south of Addis ..... Shoa: A case study from Zway area. Result of a ...

  18. A case study of Slaya District, Kenya

    African Journals Online (AJOL)

    2007-08-02

    Aug 2, 2007 ... Key words: Coping mechanisms, cultural violence against widows, guardianship institution, HIV/AIDS, professional cleansers, sexual cleansing rite. RÉSUMÉ ... district leading at 32% (NASCOP, 2005). Despite recent data that ... the coping mechanisms that are employed by widows. The paper ends with a ...

  19. Energy Management. A Guide for School Districts.

    Science.gov (United States)

    Wisconsin Association of School Boards, Winneconne.

    A successful energy management program in a single school or a school district requires an energy audit or survey. The audit identifies how much energy is being consumed, as well as where it is going. Furthermore, it shows opportunities for energy conservation. The walk-through energy conservation survey is the method that has the best prospect…

  20. New Attitudes Shaping Labor-District Relations

    Science.gov (United States)

    Sawchuk, Stephen

    2012-01-01

    Back in the mid-2000s, in public and in the news media, Joseph P. Burke, then superintendent of the Springfield public schools, and Timothy T. Collins, president of the local teachers' union, often seemed to be at odds with each other. Out of the public eye, however, the two men had begun meeting regularly. When Burke left the district, the work…