Спутник связи. N-Star 3. [Редактировать]

В программе N-STAR-c , Orbital работал совместно с Lockheed Martin Corporation над построением и запуском геосинхронного спутника для японской NTT Mobile Communications Network, Inc. Lockheed Martin был выбран головным исполнителем контракта и выполнял сборку и создание ретранслятора, Orbital отвечал за поставку платформы, наземеного сегмента, запуск и летно-конструкторские испытания. 

Хронология работы аппарата

# Дата Комментарии
1 Январь 2003 года Возникли проблемы с модулем полезной нагрузки спутника, изготовленной компанией Lockheed Martin. Объявлена частичная гибель спутника. Получено страховое возмещение $40.7 млн.

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
127461НайтиНайти
2N-Star CНайтиНайти

Дополнительная классификация

#Наименования
1Страна оператор(владелец) - Япония
2Тип оператора(владельца) - коммерческий
3Тип орбиты - ГСО
4Страна производитель - США
5Все спутники связи

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг1625
2Масса (сухая), кг800
3Платформа 1xGEOStar-2 Bus
4Количество (C стволов), шт.1
5Количество (S стволов), шт.20
6Мощность, Вт2600

Характеристики орбиты

#ХарактеристикаЗначение
1Наклонение, град2.4
2Апогей, км35799.6
3Перигей, км35788.8
4Период, минут1436.1
5Длинный диаметр эллипса, км42165

Пусковые характеристики

#ХарактеристикаЗначение
1Код NSSDC2002-035B

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Оператор SKY Perfect JSAT Corporation
2Производитель Orbital ATK

Информация об удачном запуске

#ХарактеристикаЗначение
1Космодром Космодром Куру
2Дата пуска2002-07-05 at 23:22:00 UTC
3Полезная нагрузка 1xAtlantic Bird 3
4Полезная нагрузка 1xN-Star 3
5Ракета-носитель 1xАриан 5G

Найдено 1000 документов по запросу «N-Star 3». [Перейти к поиску]


Дата загрузки: 2017-04-09
Скачать документ
0.06/5
...?.....................................................................316 13.2.4 Пример 1: com.sun.star.view.XSelectionChangeListener.........................................316 13.2.5 Пример 2: com.sun.star.view.XPrintJobListener.......................................................318 13.2.6 Пример 3: com.sun.star.awt.XKeyHandler................................................................320 13.2.6.1 Небольшие...)...........................................322 13.2.7 Пример 4: com.sun.star.awt.XMouseClickHandler...................................................322 13.2.8 Пример... com.sun.star.beans.Property oSFA = CreateUnoService( "com.sun.star.ucb.SimpleFileAccess....star.sheet.SpreadsheetDocument" sImpress = "com.sun.star.presentation.PresentationDocument" sDraw = "com.sun.star.drawing.DrawingDocument" sBase = "com.sun.star.sdb.DatabaseDocument" sMath = "com.sun.star.formula.FormulaProperties" sWrite = "com.sun.star....star.sheet.SpreadsheetDocument" sImpress = "com.sun.star.presentation.PresentationDocument" sDraw = "com.sun.star.drawing.DrawingDocument" sBase = "com.sun.star.sdb.DatabaseDocument" sMath = "com.sun.star.formula.FormulaProperties" 30 sWrite = "com.sun.star.text.TextDocument....ConfigurationProvider" Provider = createUnoService(s) s = "com.sun.star.configuration.ConfigurationUpdateAccess" UpdateAccess = Provider.createInstanceWithArguments... = "com.sun.star.configuration.ConfigurationProvider" sAccess = "com.sun.star.configuration.ConfigurationAccess" 43... = "com.sun.star.configuration.ConfigurationProvider" sAccess = "com.sun.star.configuration.ConfigurationAccess" oConfigProvider... : 'com.sun.star.text.FieldMaster.SetExpression.Illustration 'com.sun.star.text.FieldMaster.SetExpression.Table 'com.sun.star.text.FieldMaster.SetExpression.Text 'com.sun.star.text.FieldMaster.SetExpression.Drawing 'com.sun.star.text.FieldMaster...("com.sun.star.text.TextField.User") sName = "com.sun.star.text.FieldMaster...("com.sun.star.text.TextField.User") sName = "com.sun.star.text.FieldMaster...("com.sun.star.awt.Pointer") oPointer.SetType(com.sun.star.awt.SystemPointer...( "com.sun.star.system.SimpleCommandMail" ) vMailSystem=createUnoService("com.sun.star.system.SimpleSystemMail... ' com.sun.star.ucb.SimpleFileAccess oZip ' com.sun.star.packages.Package azipper...("com.sun.star.ucb.SimpleFileAccess") textOutputStream createUnoService("com.sun.star.io.TextOutputStream... new com.sun.star.beans.PropertyValue Dim s$ : s$ = "com.sun.star.document.TypeDetection... = "com.sun.star.text.TextDocument" sDocType = "com.sun.star.script.BasicIDE" REM...(_ com.sun.star.sheet.CellFlags.VALUE OR _ com.sun.star.sheet.CellFlags.DATETIME OR _ com.sun.star.sheet.CellFlags.STRING OR _ com.sun.star.sheet.CellFlags.ANNOTATION OR _ com.sun.star.sheet.CellFlags.FORMULA OR _ com.sun.star.sheet.CellFlags.HARDATTR OR _ com.sun.star.sheet.CellFlags.STYLES OR _ com.sun.star.sheet.CellFlags.OBJECTS OR _ com.sun.star.sheet.CellFlags...: com.sun.star.table.TableOrientation.ROWS com.sun.star.table.TableOrientation.COLUMNS..., com.sun.star.frame.FrameSearchFlag.SELF _ OR com.sun.star.frame.FrameSearchFlag...,_ com.sun.star.text.ControlCharacter.PARAGRAPH_BREAK, 'com.sun.star.text.ControlCharacter.LINE_BREAK....star.text.TextGraphicObject" graphicService$ = "com.sun.star.drawing.GraphicObjectShape" textCService$ = "com.sun.star..., _ com.sun.star.text.ControlCharacter.LINE_BREAK, True) s = "com.sun.star.text.TextSection...("com.sun.star.ucb.SimpleFileAccess") 'ListAny(0) = _ ' com.sun.star.ui.dialogs.TemplateDescription... = "com.sun.star.accessibility.XAccessibleContext" s2 = "com.sun.star.accessibility.XAccessible" If...", _ "com.sun.star.awt.XTopWindowListener") oDisp = createUnoService("com.sun.star.frame.DispatchHelper...", "com.sun.star.awt.XTopWindowListener") oDisp = createUnoService("com.sun.star.frame.DispatchHelper... oComposerKeyHandler = createUnoListener( "Composer_", _ "com.sun.star.awt.XKeyHandler" ) oComposerDocView.addKeyHandler( oComposerKeyHandler..., сервис com.sun.star.OfficeDocumentView поддерживает интерфейс com.sun.star.view.XSelectionSupplier... oActiveSheetListener = _ createUnoListener("ACTIVESHEET_", _ "com.sun.star.beans.XPropertyChangeListener") oListeningController.addPropertyChangeListener("ActiveSheet... = "com.sun.star.configuration.ConfigurationProvider" sAccess = "com.sun.star.configuration.ConfigurationAccess" oConfigProvider...



Дата загрузки: 2017-04-23
Скачать документ
0.07/5
... regarding their neutral gas content, star formation activity, molecular gas content... understanding where, how, and why star-forming spiral galaxies get transformed... and dynamics of cluster galaxies: star-formation, metallicity, stellar population ages... generally believed to suppress the star-formation activity in galaxies, several... further investigate the triggering of star formation in these merging systems... the host galaxy, possibly triggering star formation during the initial stages... (VLBI) radio observations [45]. However, star formation indicators such as ultra... radio observations could only trace star formation activity on kiloparsec-scales... scales. Promising reservoirs for circumnuclear star formation and black-hole fuel... AGN (e.g., jets, dusty torus, circumnuclear star formation region, and broad line... for studies of the cosmic star formation history once sensitive observations... experiencing very intense bursts of star formation, 110 High-redshift galaxies... interplay between nuclear activity and star formation in galactic scales, e.g.: the... galaxies in various stages of star formation (and probably nuclear) activity... component of intergalactic gas feeding star formation in galaxies. In Figure... elliptical galaxies [35]. The compact star-forming nuggets exhibit large SFRs... evidence that nuclear activity and star formation are connected. The widespread... absorption lines demonstrates that most star-forming galaxies (SFGs) at z ∼ 1 − 3 exhibit... a polarised steep-spectrum, while a diffuse star-forming region should be highly... possible to discriminate AGN from star-forming galaxies, reaching flux densities... a cornerstone in our understanding of star-formation and accretion activity in... community is particularly active. 1 Introduction Star-formation (SF) and accretion onto... D. (Taken from [30].) —Resolving extragalactic star forming regions in clusters with.... Detailed mapping of extragalactic young star clusters is accessible today from... nearby scaleddown versions of high-z star-forming galaxies. Since a major science..., so that disentangling AGN from star-forming activity is challenging, unless... has been crucial to studying star formation laws in galaxies ([9]). Furthermore... undergoing energetic mass loss, covering star-forming regions and evolved stars... into molecular clouds with induced star formation. The comparison between HI... determine the subsequent process of star formation. At high Galactic latitudes... the case of star-forming regions, OH masers in star-forming regions... presence of H II regions) toward star forming molecular dense cores. However... the early stages of massive star formation: cloud fragmentation, kinematics and..., which are the cradles of star formation, present a complex filamentary morphology...? Several studies performed toward massive star-forming regions reveal supersonic non... conditions of massive star formation. 3 Clustered vs Isolated Star Formation It has... recognized for decades that the star formation process within filamentary clouds... early stages of high-mass star formation characterizing a sample of clusters... typical large distances of massive star-forming regions. Some approaches ([13... towards massive and intermediate-mass star forming regions located at distances... a statistically significant sample of massive star forming regions and compare them... the typical distances of massive star-forming regions (∼4 kpc), the expected...+6336 (I22198) star-forming region of ∼ 500 L . Right: AFGL5142 star-forming region... radio jets in distant massive star-forming regions. 4 Observing the Signatures... near sites of recent massive star formation (e.g. see [43]). Nevertheless, the... the phenomena associated with massive star formation, complex molecules are released... and nearby (∼1 kpc) intermediate-mass star forming regions revealed that for... high-mass star formation with respect to low-mass star formation. In... early stages of high-mass star formation [6] Anglada, G., Villuendas, E., Estalella, R., et... early stages of high-mass star formation [71] Schneider, S., & Elmegreen, B. G. 1979... directly onto the central (proto)star but through a circumstellar accretion disk... are a natural product of the star formation process, their formation mechanism... the early stages of massive star formation [6, 3, 4, 5]; or toward hot corinos... and orbital period of a (≤1.4 M ) neutron star in orbit around a stellar companion... a C+O white dwarf and a non-degenerate star (single-degenerate scenario), or both... orbital parameters in double neutron star systems can provide stringent constraints... evolution and constraining the neutron star crust composition [6]. 3 Conclusions SKA will... with the compact star, a black hole or a neutron star. The word ’microquasar... systems containing a compact object (a neutron star (NS) or a stellar mass black... to the forming star; iv) the study of distant star-forming systems... key for understanding the neutron star (NS) luminosity distribution. Some pulsars... interstellar environments and the progenitor star. For nearby galaxies, a good estimate...



Дата загрузки: 2017-04-23
Скачать документ
0/5
... Achieving CSO Financial Sustainability 68 7. STAR GHANA- STRATEGIES AND CHALLENGES IN... 7.1 Profile and Strategies 72 7.2 Analysing STAR-Ghana’s Strategies and Programmes 74 7.3 BUSAC Compared with STAR-Ghana 82 8. SUMMARY, CONCLUSIONS AND... EVER HEARD OF STAR-GHANA? ..................................................... 73 TABLE 28:IS STAR-GHANA AN... TABLE 29:STAR-GHANA PROJECT FUNDING ........................................................................ 75 TABLE 30: STAR-GHANA PROJECT...,REGIONAL AND GENDER BALANCE OF STAR-GHANA PROJECTS ....................................................................................................................... 77 iv Political... responsive civil society. Commissioned by STAR-Ghana, a multi-donor, pooled funding... 7 focused on a critical analysis of STAR-Ghana’s approaches and challenges, drawing... funding were completely clear about STAR-Ghana’s operations and considered it... by the STAR-Ghana portfolio, the study found that STAR-Ghana’s approach... development of Ghana. Commissioned by STAR-Ghana, a multi-donor, pooled funding... of the report focuses on STAR-Ghana- examining its strategies, effectiveness... on CSO financial sustainability and STAR-Ghana. In addition, interviews dated..., none of donors interviewed (including STAR-Ghana staff) thought self-financing..., BUSAC, briefly, in relation to STAR-Ghana’s approaches and challenges. CSOs... and private sector foundations including STAR-Ghana’s counterpart private sector pooled... were interviewed to discuss STAR-Ghana’s approaches. STAR- Ghana’s location at the... with CSOs. 7.1 Profile and Strategies STAR-Ghana, successor to Ghana’s first... funding were completely clear about STAR-Ghana’s operations. Many respondents considered... its convening and facilitation role. STAR-Ghana has adopted various strategies... civil society’s work. In addition, STAR Ghana supports parliament, both in... the Civil Society landscape. 7.2 Analysing STAR-Ghana’s Strategies and Programmes Various questions have arisen about STAR Ghana’s work and approaches. Four... detail. They are as follows:     STAR-Ghana was considered too centralised... STAR-Ghana Centralised and Accra Biased? Table 29:STAR-GHANA PROJECT FUNDING STAR... Source: Collated from STAR-Ghana website An examination of STAR-Ghana’s disbursements... Table 30: STAR-GHANA PROJECT FUNDING TABLE 30 : STAR GHANA PROJECT FUNDING... GENDER BALANCE OF STAR-GHANA PROJECTS NATIONAL SPREAD OF STAR GHANA PROJECTS... in progress. A summary sheet on STAR-Ghana’s GESI achievements compiled in... of mentoring and capacity building, STAR-Ghana commissioned a study on how... a thematic approach, the donors through STAR-Ghana are employing Civil Society... these issues. STAR-Ghana’s Approach to Sustainability of Organisations STAR-Ghana’s concern... components of their sustainability plans. STAR-Ghana’s presentation to potential applicants...) Originally offered to grantees of STAR-Ghana’s thematic call on Education... is difficult to assess whether STAR-Ghana’s philosophies of sustainability which... as a whole. 7.3 BUSAC Compared with STAR-Ghana A pooled funding arrangement which... 9 under strategic opportunities). As well, STAR-Ghana top ten beneficiaries have... partisan politics. Many CSOs thought STAR- Ghana was a positive development in... funding were completely clear about STAR-Ghana’s operations and considered it... their sector. STAR-Ghana The renewal of the STAR-Ghana programme after... a role to play in disseminating STAR Ghana’s communications and anchoring capacity... domestic sources of CSO funding. STAR Ghana could facilitate the identification... (Rural Health Services) in Ghana.” STAR-Ghana Study Report. Apusigah, A. Tsikata... Range of CSOs Supported By STAR-Ghana”. STAR-Ghana Draft Report. Kane... Press. STAR-Ghana. Presentation. “STAR-Ghana’s Emerging Strategic Framework”. STAR-Ghana STAR-Ghana. “Sustainability Grant Fund”. STAR-Ghana Presentation. STAR-Ghana. “Theory of Change”. STAR... Strategy’ STAR-Ghana. 2011. “Star-Ghana Monitoring and Evaluation (M&E) Framework”. STAR-Ghana.2011... for STAR-Ghana, Coffey International Development Inception Report DFID STAR-Ghana STAR-Ghana... Session: Expression of Interest Stage, STAR-Ghana presentations. Swiss Coalition of... BUSAC Mr. Nicolas Jorgensen Gebara STAR Steering Prof. Agnes Apusigah Committee....  It avoids duplication of projects.  STAR encourages Networking.  After provision of... before donors and vice sersa  STAR-Ghana sponsors many organisations  The..., good governance and the media.  STAR-Ghana maintains high media visibility... in them. STAR-Ghana regulates them well  Through the STAR-Ghana funding... and not necessarily an intermediary  Star is funding institution and works... strengthen their engagement with donors  STAR- Ghana needs to adopt a performance...



Дата загрузки: 2017-04-24
Скачать документ
0/5
... of the key improvements to star detection, star measurement, rate estimation, and... of Sinclair Interplanetary ST-16 Star Trackers. Amongst more prominent objectives... precise onboard attitude sensors, namely, star trackers. Historically, volume, mass, and power requirements limited star trackers to large spacecraft. The... 1: The Sinclair Interplanetary ST-16 Star Tracker. Through the utilization of... capabilities in a miniaturized package. The star trackers have played a major role...-16 Star Tracker The ST-16 star tracker is a relatively new nanosatelliteclass star... Table 3: Typical Operational Chain of a Star Tracker Process Description 1 Imaging Optically... digitize the image. 2 Star Image processing to identify star Detection candidates and isolate their corresponding intensity patterns. 3 Star Vector Centroid each star image and Computation calculate the corresponding star vector... observed stars from the onboard star catalog 5 Attitude Estimate the attitude... identified star vectors. The debugging and development process for the star trackers... data product. tionality of basic star tracker processes. Tracing these links... of SkySat-1’s star trackers. Data Collection Skybox began collecting star tracker data... five basic operations: imaging, star detection, measuring star positions, matching, and finally... criteria of a star tracker are: Three different types of star tracker telemetry... telemetry packets ble. from the star tracker. These packets are approximately... telemetry streams from both star trackers the star tracker error can be... Table 2: Measured performance of SkySat-1 star trackers Availability (%) Accuracy (arc seconds... 10.0 23.0 74.0 Metric Star Detection Reliability Star Measurement Accuracy Matching Robustness... 4: Algorithm-level performance metrics of Star Trackers Criteria Contributing Effects and..., Artifacts from Baffle Accuracy of star vectors formu- Centroiding, Camera Model... summarized by the following 6 steps: Star Positions (proper motion, binary stars... (beginning with star centroids and brightnesses). Reprocess- Several new star catalogs were... our original data. The star software. tracker stores a star table ( 70 kB... contains stars with vastly different star colors, a specific assessment of sensor... focus. Collaborative Relationship Restoring the star trackers to full function was... the poor reliability of star detection. Both star trackers were detecting significantly... resultant star detections and subsequent star matches. Our goals were to maximize star..., we created a map of expected star detections given a set parameter settings... like the moon. Although the star matching algorithms are reasonably tolerant... catalog and centroid determination, the star matching routines could be much... the expected geometry during the star matching process. 3. Strict solution acceptance... always correct. Although most three-star matching solutions were correct, there... the observed intensity pattern 4 . During star detection, routines onboard the ST... calibration process that utilizes a single star source, and a 3-axis motorized gimbal... (SNR) of the imaged star. The lab star source is tuned to... brightness of the star decreases, the SNR of the star image drops... conditions was a windowbased approach. Following star star detection, an initial centroid estimate... begin, each detected star must be converted into a star vector through the..., based on matched star color, to revise the computed star vector. However... effect of star temperature on focal length. A second generation star tracker, titled.... Thus with a calibrated star tracker we can calculate star vectors from the... centroid measurements lead to noisy star vector measurements, but these centroid... and 25 Following the star vector calculations, a star matching alarcseconds, respectively. gorithm... find matches between these star vectors and the star vectors calculated from... each star. ω (deg./s) 0.6 ωx (deg./s) 4 0.0366 Utilizing the initial on-orbit star observations... empirical detections, the threshold for star inclusion became a linear weighting of... 6: Rate error orbit dependence (δt=40 s). star catalog. A successful match allows for.... Since the issues of star detection and star vector calculation were addressed... describes improvements to the onboard star catalog to improve the performance of the star matching process. Additionally, stars were... Troublesome Stars With an improved star catalog, particular stars, while sufficiently... year. Secondly, the positions of star clusters tually validated. Overall, the... improvements under develincluded in the star catalog. During the matching opment... in the logic for star detection, star measurement, lite Star Tracker,” 61st International... period to tune 2. Dzamba T., “Towards Star Tracker Only Attitude calibration and... resources be- 3. ing a Small Arcsecond Star Tracker,” 2013 IEEE tween simulation... 13 Liebe C.C., “Accuracy performance of star trackers - a tutorial,” Aerospace and Electronic...



Дата загрузки: 2017-04-24
Скачать документ
0/5
... crops: Maize, sorghum, millet 8 Botswana Star Grading System Introduction The grading... an accommodation establishment qualifies for a Star Grading having achieved an acceptable... the establishment of the Botswana Star Grading System are : • • • • • • • • • • A marketing and... of a rating from 1 to a 5 star facility. • • • • • • One Star facility offers fair to... Metcourt Inn is a modern, affordable 3-star selected services modern, centrally located... a magnificent vista across the floodplains. A star-gazing deck with comfortable cushions... Bobonong 1 Star 262 9982 Goitserase Guesthouse Commercial Guesthouse Francistown 1 Star 2419686 Lodi Guest House Commercial Guesthouse Francistown 1 Star 2404241 Precious Botswana Commercial Guesthouse Francistown 1 Star 244 1811... Francistown 1 Star 2402169 Road View Lodge Commercial Guesthouse Francistown 1 Star 2431110 Ntshe Guesthouse Commercial Guesthouse Francistown 2 Star 244 2222 Zarephath Commercial Guesthouse Francistown 1 Star 240 5468... Guesthouse Francistown 2 Star 2403518 Boiketlo Lodge Commercial Guesthouse Gaborone 1 Star 395 2347... Gaborone 1 Star 391 2886 Ditshane Lodge Commercial Guesthouse Gaborone 1 Star 316 3737 Lape Lodge Commercial Guesthouse Gaborone 1 Star 3170397 Super Guesthouse Commercial Guesthouse Gaborone 1 Star 318 2134... Gaborone 1 Star 393 9020 Rehoboth Guesthouse Commercial Guesthouse Gaborone 1 Star 393 2168 Roadside Lodge Commercial Guesthouse Gaborone 1 Star 393 0888... Gaborone 3 Star 312 1755 Letlhakeng Lodge Commercial Guesthouse Gaborone 2 Star 395 8028... Crest Suites Commercial Guesthouse Gaborone 5 Star 393 5373 Broadhurst Inn Commercial... Lodge Ext 4 Commercial Guesthouse Gaborone 1 Star 390 3295 Gantsi Grand Guesthouse... Old House Commercial Guesthouse Kasane 3 Star 625 2562 Granny’s Lodge & Conference Centre Commercial Guesthouse Letlhakane 2 Star 297 8246 Mongana Guesthouse Commercial... Street Chalets Commercial Guesthouse Maun 2 Star 6864688 Kesmo Lodge Commercial Guesthouse... Victoria Lodge Commercial Guesthouse Mogoditshane 2 Star 391 6643 / 4 / 74162340 230 Phomolong... Mogoditshane 1 Star 391 5165 Kodisa Lodge Commercial Guesthouse Molepolole 2 Star 590 6835... Palapye 2 Star 492 1592 J. N. Mokgosi guesthouse Commercial Guesthouse Palapye 2 Star 492 3343 Palapye Guesthouse Commercial Guesthouse Palapye 2 Star 492 2274 Sebothe Motel Commercial Guesthouse Pitsane 2 Star 540 4801... Riverside Lodge Commercial Guesthouse Tlokweng 1 Star 392 8805 / 392 8802 Springbork Motel Commercial Guesthouse Tsabong 1 Star 654 0747 / 71242047 Tsabong Guesthouse... Tutume 1 Star 2987062/71785919 Motsweding Lodge Commercial Guesthouse Otse 1 Star 72900969 Emoyo Villa Commercial Guesthouse Francistown 1 Star 240 6854... Bobonong 2 Star 74651628 Diggers Inn Fully Serviced Hotel Francistown 3 star 244 0544... Gaborone 3 star 3910117/ 6 Gaborone Sun Fully Serviced Hotel Gaborone 4 Star 395 1111... Park 5 Star 6860302 Dumela Lodge Game Lodges & Camps Francistown 2 Star 2403093 Edo’s Camp Game Lodges & Camps Gantsi 3 Star 6860211 De... Ghanzi 2 Star 6597499 Motswiri Camp Game Lodges & Camps Ghanzi 3 Star 72720701 Gweta Lodge Game Lodges & Camps Gweta 2 Star 6212220 Deception... Lesoma 3 Star 6250468 Lagoon Camp Game Lodges & Camps Linyanti 4 Star 6861449 Linyanti... Linyanti 5 Star 6860086 Lebala Camp Game Lodges & Camps Linyanti 4 Star 6861449 Jacks Camp Game Lodges & Camps Makgadikgadi 5 Star 2412277 Makgadikgadi... Ngoma 4 Star 6200013 Nxamaseri Lodge Game Lodges & Camps Nxamaseri 4 Star 6878015 Kgori... Selibe Phikwe 3 Star 2601596 Mbiroba Game Lodges & Camps Seronga 1 Star 6876861 Khama... LodgeZanzibar Game Lodges & Camps Zanzibar 2 Star 71313399 239 Graded facilities Nxai... Lodge Selected Service Hotel Kazungula 1 Star 6252999 Iketlo Lodge Selected Service... Lodge Selected Service Hotel Maun 1 Star 6863394 Botshelo Guesthouse Selected Service... Lodge Selected Service Hotel Maun 2 Star 6800551 71752728 Kagisong Conference Centre & Lodge Selected Service Hotel Mogoditshane 1 Star 393 2417 Lamilla Guesthouse Selected Service Hotel Mogoditshane 1 Star 390 4229 Mogoditshane Serviced Apartments... Guesthouse Selected Service Hotel Palapye 1 Star 492 3228 Gloryland Guesthouse Selected... Stopover Self Catering Establishment Francistown 3 Star 2440131 Wayside View Chalets Self... Francistown 4 Star 2413687 Motheo Apartments Self Catering Establishment Gaborone 2 Star 318 1587... Apartments Self Catering Establishment Gaborone 3 Star 395 3603 Phakalane Golf Estate Self Catering Establishment Gaborone 4 Star 393 0000 Bophirimo Self Catering... Reserve Self Catering Establishment Mokolodi 2 Star 3161955/6 Travel Inn Self Catering...



Дата загрузки: 2017-04-08
Скачать документ
0.1/5
...: Star Tracker Slew ................................................................................................ 35 Star Tracker Simulation ..................................................................................................................... 39 3.1. Motivation and Purpose............................................................................................................ 39 3.2. Star... ..................................................................................................... 40 3.2.3. Detector Noise Overview .................................................................................................. 41 3.3. Star Tracker Model Implementation ......................................................................................... 43 3.3.1. Implementation... ......................................................................................... 45 3.3.2.2. Point Spread Function ............................................................................................... 46 3.3.2.3. Star Light Photon Count ............................................................................................ 47 3.3.2.4. Clean... .............................................................. 57 4.2. 5. Star Tracker Model Output ............................................................................................... 52 Star ID Algorithm ....................................................................................................................... 58 4.2.1. Star ID Algorithm Motivation and Purpose ....................................................................... 58 4.2.2. Star ID Algorithm Details ................................................................................................... 59 4.3. Combined Star Tracker Model and... 4-3: Example of Star ID Algorithm ............................................................................................... 59 Figure 4-4: Combined Star Tracker Model and... with optical star measurements. These measurements are processed by star tracker algorithms... excellent overview of how star trackers operate. The star tracker consists of... and robust star identification algorithm to track the same star between image... the fast centroiding algorithm, star tracker model, and star identification algorithm. This... movement of the star centroids. At each frame, the star centroids can be used to calculate a star unit vector... to the current star locations to find the estimated star locations in... Euler’s Equation: Propagate Actual Star Locations Actual Star Locations Apply Centroid Noise... ADU. 42 3.3. Star Tracker Model Implementation 3.3.1. Implementation Overview The star tracker model... block diagrams of the star tracker simulation. Buffer Star Locations on Image... Quaternion S/C Velocity Star Unit Vectors Apply stellar aberration Star Unit Vectors Calculate... star locations on imager Star Locations on Image Apply focal plane misalignments Star... pixel grid for each star, place star on grid considering line scan... quaternion and the initial star locations. The star locations are unit vectors... up to 10 propagated star locations for each star on the detector... output of the star tracker model is a simulated star field image. This... previous centroids are saved. 4.2. Star ID Algorithm 4.2.1. Star ID Algorithm Motivation and...(k-1) Figure 4-3: Example of Star ID Algorithm As the star tracker slews between... first and second star move positions and a third star is added. The... a priori information such as a star catalog. 4.2.2. Star ID Algorithm Details State 1 uses... “Assign First Time Star IDs” algorithm to create star IDs for the... first frame image, star ( ) is given ID 1 and star ( ) is given ID... match each star in the current image frame to a star from the... algorithm subtracts each star’s current location from all the star locations in the previous frame. Whichever star pair has... shown in Figure 4-3, the star ID for star in the second full... a match to star ( smaller than ( , therefore star ( ). In this example, ) matches star ( ) is... assigned to star ( will be ). Star ) in the “Assign First Time Star IDs... star matches. If the distance between a star in the current frame and star... from the star tracker simulation. For each trial, one star was placed... reduces the star’s symmetry. Second, as smear increases, the star becomes dimmer... the testbed star light is 82 not collimated. The star light is... be developed for the star tracker simulation. The star tracker simulation could... develop a high fidelity star tracker model to analyze star tracker performance and... noise to produce a simulated star tracker star field image. The fast centroiding... to test the star tracking performance. The full star catalogue and attitude... compensation for high accuracy star centroid estimation of star tracker.” Science China...



Дата загрузки: 2017-04-09
Скачать документ
0.05/5
...  ...............................................  39   2.3.4   Discovering  the  Most  Extreme  Star  Forming  Galaxies  and  Quasars  .....................................  41... astrometric (positional) precision for a faint star nine times faster than a 1.3-meter... for achieving a comprehensive understanding of star and galaxy formation. Little is... a bootstrapping approach that measures a target star relative to its local Section... environments with stellar populations and star formation histories that differ substantially... at 3 AU from J /5diversities. a G2 V star, asatomic a function of spectral resolution...% completeness contour for each individual star, with the median completeness indiCompleteness... to a median star. Right: average completeness of a 6month 46-star survey. Section... (D ~ 2– 5 kpc) massive star forming regions will constrain highmass star formation (numbers, luminosities... square degrees. Star birth in places like the Taurus Star Forming Cloud... destinations in many star-forming clouds and young star clusters, in the... – richly populated star clusters that record a unique episode of star formation with.../Rt -­‐ GW  Processing  on  SBCC:       star  acquisition;  star       centroids  (H/V),  time   stamp,  counts... off the electronics bright star to a science target star. This is representative... (e.g. WFI and CGI) or Spacecraft (e.g. star tracker platform) instrumentation teams. These... star spectrally similar to the eventual target star, then at a bright star to... center. serves a bright star near the science star. The field at the... effect on coronagraphic performance. A bright star (β Ursae Majoris) was imaged over... any given target star will have one such bright star within approximately... to a calibration star for speckle characterization. The calibration star is chosen to... Times 25 Target  star  and  planet 2 47  Uma Calibration  star  spectrally   similar... milestones on, e.g., convergence rate vs. star brightness, joint estimation algorithms that... (Paul Goudfrooij) § Massive star clusters trace early star formation history and galaxy... brightness, abundance gradient, velocity dispersion, star formation history, and substructure in... overall understanding of the star formation process. Most star clusters disrupt within... the star determine whether or not a star will ultimately become a carbon star, with...  the  properties  of  the  host  star.     Caption:   Simulated   planetary   transit   light...  –  0.15”   S/N  –  100  for  a  J  <  19  mag  star     Precision  –  1  mas  single  measurement   Appendix...   correlates   to   peaks   in   the   star   formation   history   (see   Figure   below...  Infrared  Color-­‐Magnitude  Relation   Background   Star  clusters  in  the  Milky  Way...-­‐resolution,   deep   imaging   of Galactic   star   clusters.     Second,   this   relation   can...   pc),   young   (10   Myrs)   T   Tauri   star   (Rucinski  &  Krautter  1983),  about  100...   determining   the   age   of   a   single   star   is   subject   to   large   systematic...   indeed   typically   require   Laser   Guide   Star   Adaptive   Optics   (LGSAO)   observations,   which...   of   stars   at   these   magnitudes.       Star-­‐galaxy   separation   will   severely   limit...  component  of   the   motion   of   a   star,   there   is   a   well-­‐known   degeneracy...  quantity  of  dwarf  satellites   and  star  clusters.    This  input  represents  a  key...  satellite  accretion  vs  in-­‐situ  star  formation  dominate?  and  (3)  is  the...   (i.e.,   what   physical   conditions   lead   to   star   formation?   how   does   energy   from...   timescales   and   star   formation  rates  are  associated  with  traditional  star  formation  rate...   disks   of   spiral   galaxies   probe   star   formation   in   low-­‐density   environments...   through   e.g.,   mergers,   gas   accretion,   and   star   formation.        Yet  this  has  proved...   turbulence   is   operating   to   quench   star   formation.  Finding  “nascent”  pre-­‐starforming...  the  sources  responsible  for  Reionization   Star–forming   galaxies   are   likely   responsible...   to   z   >   2,   dramatic   changes   appear.   Massive   star-­‐forming   galaxies   along   the   so...   will   discover   a   large   number   of   z2   star-­‐ forming  galaxies  via  the  detection...  Counterparts  of  Elusive  Binary  Neutron  Star  Mergers   Mansi  Kasliwal  (Carnegie),  Samaya... slightly closer to the star). The star brightness is estimated on the... the instrument plus star noise. Kepler’s total noise (star plus instrument) masks... low mass star tracers, and much higher resolution for star-galaxy separation...-weight the contribution from localized star-forming regions, changing p(z) at least... astrophysical systematics, including gas dynamics, star formation, and feedback effects, and...( identify( a( detected( transient( as( a( compact( star( merger,( we( have( to( take... unprecedented mapping between bulge growth, star formation rate, and galactic outflows...) Heavens, A., Panter, B., Jimenez, R. & Dunlop, J., “The star-formation history of the Universe...



Дата загрузки: 2017-04-09
Скачать документ
0.03/5
...  ...............................................  32   2.3.4   Discovering  the  Most  Extreme  Star  Forming  Galaxies  and  Quasars  .....................................  34... astrometric (positional) precision for a faint star nine times faster than a 1.3-meter... astronomy Repeated observations Astrometry Measure star positions and motions The epoch... for achieving a comprehensive understanding of star and galaxy formation. Little is... unperturbed39. 2.3.4 Discovering the Most Extreme Star Forming Galaxies and Quasars The... (D ~ 2–5 kpc) massive star forming regions will constrain highmass star formation (numbers, luminosities...” — a habitable Earthlike planet orbiting a nearby star. 2.5.1 Microlensing: Measuring the Demographics of... environments with stellar populations and star formation histories that differ substantially... 2.5.2.3 Exozodiacal Light and Disk Architecture A star and its planetary system both... microlensing events. If the star is not a variable star, then the relative... entire annulus around the target star. Other assumptions include a nearly noiseless... for geometrical measurement of host star masses using a combination of geosynchronous... Resolved Stellar Population Studies in z ~ 2 Star Forming Galaxies General   Synergy Between... Counterparts of Elusive Binary Neutron Star Mergers     Appendix A: One Page Science...  the  properties  of  the  host  star.         Caption:   Simulated   planetary   transit   light...  –  0.15”   S/N  –  100  for  a  J  <  19  mag  star     Precision  –  1  mas  single  measurement     Appendix...  and  Substellar  Populations  in  Galactic  Star  Forming  Regions   Normalized Flux (Fλ)   Background... 0.8 0.6 -­‐  Large  area  surveys  covering  known  star   0.4 forming  regions,  with  possible  extension...   correlates   to   peaks   in   the   star   formation   history   (see   Figure   below...  Infrared  Color-­‐Magnitude  Relation     Background   Star  clusters  in  the  Milky  Way...-­‐resolution,   deep   imaging   of   Galactic   star   clusters.     Second,   this   relation   can...   pc),   young   (10   Myrs)   T   Tauri   star   (Rucinski  &  Krautter  1983),  about  100...   determining   the   age   of   a   single   star   is   subject   to   large   systematic...   as   a   laboratory   for   how  the  star-­‐formation  process  depends  on  metallicity...   triggering   mechanisms.     The   most   distant   star-­‐forming   regions   in   the   galaxy...+1455,   the   most   distant   known   star-­‐forming   region   at   R(G)   ~   20.2   kpc...   indeed   typically   require   Laser   Guide   Star   Adaptive   Optics   (LGSAO)   observations,   which...   of   stars   at   these   magnitudes.       Star-­‐galaxy   separation   will   severely   limit...  component  of   the   motion   of   a   star,   there   is   a   well-­‐known   degeneracy...  quantity  of  dwarf  satellites   and  star  clusters.    This  input  represents  a  key...   (i.e.,   what   physical   conditions   lead   to   star   formation?   how   does   energy   from...   timescales   and   star   formation  rates  are  associated  with  traditional  star  formation  rate...   disks   of   spiral   galaxies   probe   star   formation   in   low-­‐density   environments...   through   e.g.,   mergers,   gas   accretion,   and   star   formation.        Yet  this  has  proved...   turbulence   is   operating   to   quench   star   formation.  Finding  “nascent”  pre-­‐starforming...  the  sources  responsible  for  Reionization       Star–forming   galaxies   are   likely   responsible...  stars,  which  delayed   30 subsequent   star   formation   in   cosmological   halos   until...   redshifts,   z   ~   10   –   15,   will   probe   star   formation   in   primeval   galaxies   and...   to   z   >   2,   dramatic   changes   appear.   Massive   star-­‐forming   galaxies   along   the   so...   will   discover   a   large   number   of   z2   star-­‐ forming  galaxies  via  the  detection...  also  allow  accurate  estimates  of  star  formation  rates,  stellar  masses,  and...   a   range   of   galaxy   evolution   science.     Star   formation   is   known   to   drop...  causing  this  global  decline  in  star  formation  requires  resolved  high-­‐ resolution...  measurements  that  probe  the  instantaneous  star  formation  rate  and  resolved   rest...  these  studies.       At  z>4  the  global  star  formation  rate  density  is  rapidly... (Paul Goudfrooij) § Massive star clusters trace early star formation history and galaxy... brightness, abundance gradient, velocity dispersion, star formation history, and substructure in... overall understanding of the star formation process. Most star clusters disrupt within... the star determine whether or not a star will ultimately become a carbon star, with... compared to its host star for the planet/star contrast to be... between a foreground lens star and a background source star, and are both rare...-5 events/year/star, and thus 104/5×10-5 ~200 million star-years must... Heavens, A., Panter, B., Jimenez, R. & Dunlop, J., “The star-formation history of the Universe...



Дата загрузки: 2017-04-23
Скачать документ
0/5
... than the light of its star. When seen from tens to... appears very close to its star and its faint light is... in the glare of its star. Indirect methods designed to detect... its influence on its parent star or on other field stars... dense star, resulting from the collapse of the core a massive star during... discovery of an exoplanet around a star similar to the Sun was... in the radial velocity of a star (Mayor & Queloz, 1995). This exoplanet... it orbits close to its star (about 8 times closer than Mercury... velocity effect on its parent star opened a new area in the... in front of its host star. This event is called a transit... the planet behind its host star is called an occultation or... relative to its host star, the planet to star separation, and the... follow-up of its parent star. For a transit to occur, the... the line of sight) of a star gravitationally 6 This number depends on... the brown dwarf regime) orbiting a star (spectral class above M6; below... velocity variation on its host star of about 50 ms−1 . The... it causes on its host star (see Section 1.3.2 for formulae). For... the planet transits its host star. The radial velocity method is... of the light of a background star due to the deflection of... the gravitational field of a foreground star and its planet acting as a gravitational lens. The foreground star acts as the main lens... the lensing of its host star. The magnification of the background... ∼100 days for the host star, and the superimposed magnification due... technique peaks for planet to star separations equal to the Einstein... the radio pulse of a neutron star, a remnant of super-novae. An... (emitted or reflected from the star), and works for those planets... block the light from the star, or an interferometer to nullify... sharpen the image of the star which is then easier to... 0.2 (Mercury). Planet-planet and planet-star interactions can induce larger orbital...-orbit angle λp 4 Stellar spin angle 6 Star Stellar mass M� Stellar radius R� Stellar..., d is the distance of the star to the Sun, ampl. stands... magnification maximum due to the star and the one due to... between the planet and the star, φsec is the phase in..., Lp /L� is the planet-to-star luminosity ratio, φmax is the..., [M/H] is the metallicity of the star relative to the solar metallicity... the host star, 3 relative to the mass of the host star, 4 angle... of a planet transiting its host star (middle) with the corresponding variation... the radius of the host star, a/R� the orbital distance of the... the radius of the host star, i the orbital inclination projected to... close to their star as tidal interaction with the star acts to... to the central star. 4. The light comes from a single star, i.e the light from the planet host star is not blended with the light from another star. To... (2003) for the planet-to-star radius ratio Rp /R� (equation 1.2), the... related to the planet-to-star radius ratio as follows δ= � Rp... distance between the planet and star centres – can be derived from...



Дата загрузки: 2017-04-23
Скачать документ
0/5
... from CCT, Director of Zero Star, Komar Mendonca, Director of Cooperativa... for vegetables 167 6.5 6.5.2.1 The Zero Star supply chain 168 6.5.2.2 World Vision... various participants in the Zero Star Uni Pessoal value chain 170... to customers 165 Figure 6.6 Zero Star supply chain 168 Figure 6.7 World... are presented. This includes Zero Star, World Vision, Cooperativa Café Timor... Community Activation Project (AMCAP), Zero Star and the United Nations Office... supply chain introduced by Zero Star and World Vision as described... 7. 167    6.5.2.1 The Zero Star supply chain Zero Star Uni Pessoal was founded... by Zero Star is as follows (see Figure 6.6). Zero Star purchases the... in good condition. Producers Zero Star (Cleaning, washing, grading, packing, labelling... flow Financial flow Figure 6.6: Zero Star supply chain When harvesting the... been chosen. Following this, Zero Star staff then 168    collects the... total vegetables handled by Zero Star. This is followed by products... of payment applied by Zero Star has contributed to farmers’ confidence... farmers by Zero Star. In many cases, Zero Star provides cash advances... formal contract arrangement between Zero Star and farmers. The negotiation and...%) trust Zero Star because they feel that Zero Star will assist them... various participants in the Zero Star Uni Pessoal value chain Description... Percentage ($/kg) net margin (%) Zero Star 0.30 40.0 0.30 46.2 0.45.... In addition, for the Zero Star chain, carrots and cabbage offered... receive cash payments weekly; Zero Star/World Vision can get their... provide a more consistent supply, Zero Star/World Vision is engaging in... of respondents engaged with Zero Star/World Vision is small, accounting..., the latter introduced by Zero Star and World Vision. The traditional... boxes. Through cooperation with Zero Star and World Vision, a mutually beneficial... customers. Through the chain, Zero Star and World Vision encouraged participant... cool room facilities of Zero Star demonstrated the value of delivering... 7.2.1 presents the case of Zero Star Uni Pessoal, an international aid...: the case of Zero Star Uni Pessoal Zero Star Uni Pessoal is... business under the name, Zero Star Uni Pessoal. This LF2M initiative resulted to the Zero Star value chain described in Chapter... imported vegetables. In 2006, Zero Star got involved with DSPUSAID. Through..., packaging, grading and standardisation. Zero Star first started delivering graded produce... 2007. By January 2008, Zero Star had a fully operational cold chain... delivering produce to Dili. Zero Star also built a small cold storage.... 184    Services provided by Zero Star to farmers include access to... the inputs farmers receive, Zero Star also provides regular assistance to... keeping, grading and packing. Zero Star, with DSP’s assistance, also helps... case studies Strenghts Weaknesses Zero Star Uni Pessoal Access to high... farmers that engaged with Zero Star is that they received assistance... with support and assistance, Zero Star could control the price. According... labour. In the Zero Star case, Zero Star purchased the product directly... Stakeholders Critical success factor Zero Star Uni Pessoal External support, innovativeness..., with the support from Zero Star, crop production increased; farmers regularly... Cooperativa Haburas Fronteira and Zero Star. After finding the market, packaging... LF2M initiatives implemented by Zero Star and World Vision which are... products, as demonstrated by Zero Star and World Vision. Quantitative and... initiatives as perceived by Zero Star and World Vision and farmers... of LF2M Linkage partner (Zero Star & World Vision) Farmers Improve farmers... marketing √ √ Profit derived for Zero star and World Vision √ - Assured product... from their farm activities. Zero Star and World Vision also benefited... the LF2M initiiative by Zero Z Star and a World Vision con ntributed... stakeholders. For the stakeholders (e.g., Zero Star), the initiative has improved the... this research including the Zero Star, CCT, Timor Global, World Vision... specialisation. Most stakeholders (e.g., CCT, Zero Star, ASC, etc.) specialized only on..., goods and services. Similarly, Zero Star established a cold storage facility in... because these infrastructure allowed Zero Star to process their products before... instance, the case of Zero Star showed that identifying a niche market... opened new markets for Zero Star. Similarly, to compete with imported... of the linkage partners (e.g., Zero Star, CCT, Timor Global, ASC, World... scale industry such as Zero Star and Cooperativa Haburas Fronteira, more... partner (e.g., Zero Star/ World Vision). Following this, Zero Star/ World Vision re.... Farmers get paid weekly, Zero Star guarantees regular supply and better.... In the value chain, Zero Star/ World Vision provided information and... (horticulture and non-horticulture). Zero Star and World Vision dealt with... model (e.g., Timor Global and Zero Star), government-supported program model (e.g., ASC... markets: the case of Zero Star Uni Pessoal, International Society for... various participants in the Zero Star supply chain Description Value ($/kg...