Download presentation
Presentation is loading. Please wait.
Published byScott Eugene Kelly Modified over 6 years ago
1
North American ALMA Operations and the North American ALMA Science Center Staffing Plan
NRAO Internal Review: Scope and Charges Phil Jewell Deputy Director, NRAO National Research Council Canada NAASC Internal Review April
2
NAASC Review: Who’s who
Presenters: J. Hibbard (NAASC) J. Webber (NTC) D. Shepherd (DM) C. Brogan (NAASC) M. Adams (EPO) Reviewers: D. Emerson (ALMA, Chair) P. Jewell (DD) G. Clark (AD Admin) R. D’Angio (HR) R. Prestage (AD GB) N. Radziwill (AD e2e) J. Ulvestad (AD VLA/VLBA Ops) M. McKinnon (EVLA PM) R. Perley (EVLA PS) C. Carilli (Scientific Staff) D. Crabtree (NRC-HIA)
3
NAASC Review: Scope and Charges
NRAO requests comments on: Overall scope of the NAASC Priority of Activities included Identification of any activities missing The operations model, including budget / staffing ramp-up profile Cost estimates for all activities
4
NAASC Review: Scope and Charges
These comments are needed to sharpen the plan prior to an initial presentation to the NSF on April 24th 2006. We request that the chair designate a scribe to record comments during the review, and that a brief summary of the panels impressions (bulleted list) be provided by Friday April 14th, if possible
5
NAASC Review: Agenda 10:30-10:45 (15min) Scope and Charges - Jewell
10:45-11:15 (30min) Background and Assumptions; NAASC Organization (S3 & S4) - Hibbard 11:15-11:45 (30min) North American ARC (S5) - Hibbard 11:45-12:15 (30min) Technical Division (S6.2) - Webber 12:15-13:15 (60min) Lunch Talk: Todd Hunter (CfA/SAO): "NGC6334: A cluster of massive protostars resolved by the SMA" (Rm. CV 311) 13:15-14:00 (45min) Data Management Division (S6.1) - Shepherd 14:00-14:30 (30min) Beyond ARC Science (S7.1 & S7.2) - Brogan 14:30-15:00 (30min) EPO (S7.3) - Adams 15:00-15:15 (15min) Break 15:15-16:00 (45min) WBS/Budget (S8 & S9) - Hibbard 16:00-16:30 (30min) Questions 16:30-17:00 (30min) Panel Discussion (closed) 17:00-17:15 (15min) Recommendations 17:15 - Adjourn
7
North American ALMA Operations and the North American ALMA Science Center Staffing Plan
Introduction to the NAASC, and Background & Assumptions John Hibbard Acting Head, NA ARC National Research Council Canada NAASC Internal Review April
8
ALMA is a Complex International Observatory
Partnership between Europe, North America and Japan, in cooperation with the Republic of Chile ALMA is funded in Europe by the European Southern Observatory (ESO), in Japan by the National Institutes of Natural Sciences (NINS) in cooperation with the Academia Sinica in Taiwan, and in North America by the U.S. National Science Foundation (NSF) in cooperation with the National Research Council of Canada (NRC). ALMA construction and operations are led on behalf of Europe by ESO, on behalf of Japan by the National Astronomical Observatory of Japan (NAOJ) and on behalf of North America by the National Radio Astronomy Observatory (NRAO), which is managed by Associated Universities, Inc. (AUI). The leaders of the project from each continent are called “The Executives” (NRAO in the case of North America, ESO in the case of Europe, and NAOJ in the case of Japan). Primary governance for ALMA is via the ALMA Board, established by the Bilateral ALMA Agreement between NSF and ESO.
9
ALMA Regional Centers The JAO will have user interfaces known as “ARCs” in each of the three partner regions: North America, Europe, & Japan. *Garching *Cvlle *Tokyo *ALMA site *Santiago
10
ALMA Regional Centers The ARCs will conduct activities needed to receive and process proposals from observers and return data to users, all archive based and organized. *Garching *Cvlle *Tokyo *ALMA site *Santiago
11
ALMA Regional Centers The ARCs are the exclusive interface between the ALMA Observatory and the end user. *Garching *Cvlle *Tokyo *ALMA site *Santiago
12
ARC Models NAASC “Satellite” EU ARCs ARC Core Functions NAOJ NA ARC
Chile Operations Joint ALMA Observatory J ARC NAOJ
13
Beyond ARC Services NAASC “Satellite” EU ARCs “Beyond ARC” NAOJ NA ARC
Chile Operations Joint ALMA Observatory J ARC NAOJ
14
The NAASC: “Beyond the ARC”
NAASC = NA ARC + whatever it takes to make ALMA operations a success that are not included in the ARCs (e.g. Grants program, personal user support, workshops, Fellows/students, algorithm development, EPO)
15
National Research Council Canada
Canada participates in NA ALMA via the NSF-NRC MOU and NAPRA agreement Obligated to contribute 7% of North American share of the JAO budget; This includes 7% of the NA ARC, but no contribution to NAASC beyond the ARC; Could choose to contribute, in part, with personnel, to Chile and to the NA ARC. Could reasonably expect to get 7% of the Development work.
16
Joint ALMA Observatory
The NAASC within NRAO ALMA Board NSF&NRC AUI NRAO Joint ALMA Observatory NAASC NA ARC Ops GBT VLA & VLBA NTC
17
NAASC Organizational Chart
ALMA Construction NA ALMA Project Director NRAO Directors Office ANASAC Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office = beyond ARC Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office = beyond ARC Science Division Proposal Functions User Science Support Archive Operations NA ARC Science Division Proposal Functions User Science Support Archive Operations NA ARC = ARC Ops Data Management Division Software M & R Development Hardware Technical Division = MR&D contracts Data Management Division Software M & R Development Hardware Technical Division = MR&D contracts { { = ARC Ops NA ARC NAASC
18
NA ALMA Operations: Background and Assumptions
The operations model is based on the ALMA Operations Plan (AOP) Version A, which has been “provisionally accepted” by the ALMA Board. The AOP is a particular implementation of the bilaterally developed ALMA Project Plan II (APP). The APP takes precedent over the AOP. In the APP vision of ALMA operations, the Joint ALMA Observatory (JAO) is primarily a service organization for conducting the activities in Chile that are required for delivery of the scientific data products required by the ALMA user communities. The Budget for Chilean Operations (excepting contracts) is taken verbatim from the ALMA Operations Budget (AOB) draft J1/B (not yet reviewed), after progressing to US$2006. Niether the AOP or AOB include the results of the rebaselined project (heterogeneous array), the inclusion of ALMA Compact Array (ACA), or Japanese involvement in ALMA operations.
19
NA ALMA Operations: Background and Assumptions
NA ARC: The scope, budget and staffing level of the NA ARC parallels almost exactly ARC as described in the AOP. Cost of NA ARC operations is calculated bottom-up from NRAO WBS; not from the AOB estimate. Budget for Contracts for MR&D is taken directly from the AOB. These contracts are first used to fund the staff required to support these efforts (as estimated by NRAO experts); this is required in order to retain highly trained personnel involved in construction. Remaining budget is available for M&S.
20
NA ALMA Operations: Background and Assumptions
“Beyond ARC”: The AOP-defined ARC is a bare-bones science center. EU funding favors bare-bones ARC supported by satellite ARC extensions which provide more detailed user support. In U.S., funding for any and all support must come from the same funding source (NSF), favoring a centralized ARC model. NAASC “Beyond ARC” is currently a U.S. only effort, to be funded entirely by NSF. Other models are possible, but not assumed. While the ARC and Beyond ARC functions are organized separately, the scientific staff of the NAASC will be assigned both ARC and Beyond ARC functions, ensuring that all NAASC astronomers have the proper expertise with end-to-end ALMA operations.
21
NA ALMA Operations: Background and Assumptions
AIV and CSV: Assembly, Integration and Verification (AIV) and Commissioning and Science Verification (CSV) are tasks of the construction project, not ARC staff. CSV is obligation of Science IPT. ARC staff may participate as part of “external expert” contingent. In long term ARC-ops, ARC staff provide 122 shifts of AoD support in Chile. Our plan is to hire these positions by 2008 in order for these staff to take part in CSV activities in Chile. NA ARC postdocs start in 2007 (2 per year for 3 year terms). May provide additional support.
22
NA ALMA Operations: Background and Assumptions
Staffing Assumptions: All astronomer positions are counted as 0.5 FTE. Assumed tenure-track astronomers. Will be challening for these staff to maintain high scientific program during the early years. Postdocs, students and co-ops are counted as 0 FTE. Six of these postdocs will be locally based NAASC postdocs. NRAO postdocs do contribute significantly to observatory science atmosphere (student program, scheduling talks, outreach, presentations, software testing), but the majority of these tasks have not been budgeted, so a net gain of 0 FTE is not unreasonable (e.g., a postdoc doing software testing does not mean we need one less ARC astronomer testing software). Primary objective of postdocs must be to obtain long-term employment. The NAASC does not have sufficient positions to employ them all long term. Comments by committee on these points are welcome.
23
North American ALMA Operations and the North American ALMA Science Center Staffing Plan
The North American ALMA Regional Center (NA ARC) John Hibbard Acting Head, NA ARC National Research Council Canada NAASC Internal Review April
24
NAASC Organizational Chart
7 FTE 4.6 FTE Science Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office Total NAASC: 75 FTE, 99 employees MR&D contracts ARC Operations Beyond ARC Science 42 FTE 13 FTE 8 FTE
25
NA ARC (13 FTE) NA ARC Head Office:
Science Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office NA ARC Head Office: Acting Head (Hibbard) ; Need permanent manager in 2009 Admin. Assist starting 2006 (Neighbours) Head manages ARC functions; interface between ARC/ALMA Operations; Oversees JAO contracts and ARC deliverables Interface & coordinate with other ARCs and NA ARC partners (Canada, Taiwan); reports back to NAASC Head. NA ARC Head Office (1astronomer/manager & 1 admin)
26
NA ARC (13 FTE) Science Division Head:
Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office Science Division Head: Manages day-to-day ARC activities (Deputy to ARC Head) Joins staff in 2011 Prior to this, functions will be managed by other ARC astronomers Science Division Head (1 astronomer)
27
NA ARC (13 FTE) Proposal Functions:
Science Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office Proposal Functions: Support users in preparation and submission of proposals Coordinate NA TAC Assistance in generating and verifying scheduling blocks Documentation and user software testing 1 astronomer in 2006 (Brogan); another in 2008; 2 more in 2009 (CfP). 1 Data analyst in 2012 & 2013 Proposal Fcn’s (4 astronomers & 2 data analysts)
28
NA ARC (13 FTE) User Science Support:
“Astronomer on Duty” in Chile (122 shifts/year); all ARC astronomers will rotate through these positions QA3 (verify NA-reported defects & report to JAO) Basic post-observation user support via helpdesk Pre-operations: offline & pipeline software testing; ATF support; CSV support Add one astronomer each year Science Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office User Science Support (4 astronomers)
29
NA ARC (13 FTE) Archive Operations: Maintain NA copy of ALMA Archive
Archive user support Interface with VO AOP calls for 4 Archive Techs. CIPT+NRC experience is that Developers are necessary to install/upgrade system 1st Developer in 2007 for temporary system; 2nd in 2009 for real archive; DB manager & Archive Techs for Early Science in 2010 Science Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office Archive Operations (1 DB manager, 2 Archive developers, Technicians)
30
NA Contract Support AOP calls for executives to maintain & repair (M&R) their construction deliverables. The AOB provides $1M/year (US$2003) per executive each for hardware & software M&R. The APP model for the JAO is that it is a service organization; developmental work will be conducted at the executives’ host countries. The AOB provides $5M/year for each executive for both hardware and software development. This work should provide added ALMA functionality (e.g. new receiver bands, observing modes, etc.). Total NA contract support = $1M + $1M + $5M = $7M/yr The NA ARC staffing plan accounts for the staff required to support these services. They are affiliated with the NA ARC, but accounted for separately.
31
NA Contract Support (42 FTE)
Science Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office キ Maintain NA archive hardware and database; キ Support data transfer from main ALMA archive; キ Support archive software maintenance; キ User support for ALMA User Database; キ Provide user feedback for archive query tool, bug reports, etc.; キ Improve archive based on local and user feedback; キ Provide web documentation on what the archive holds, how often it is updated, when user projects are ready, how to query the archive, on VO interface; キ Provide archive VO expertise, especially for radio community. These tasks are more detailed than called for in the AOP, which assumes that the archive consists primarily of data storage and retrieval hardware. The archive will not be static, but will grow both in its data content, products, data access protocols, and information content and will need to keep up with VO standards. It will therefore require archive software developers, and not simply technicians. These developers will install updates to the archive and provide input to the project on recommended updates and improvements. They will respond to user queries that are outside the expertise of the archive technicians. They will also be tasked with interfacing with the VO. Based on these considerations, we convert two of the Archive Technician positions described in the AOP into Archive developers. We retain the Database Manager and the other two Archive Technicians specified in the AOP, so that the staffing effort (5 FTE) remains the same. The archive technicians will load data into the archive, provide basic web documentation, and provide basic user feedback, forwarding more complicated user problems to the database manager or archive developers. The developers will install updates and patches to the archive and pipeline system, provide suggestions to the project for improving the archive based on local and user feedback, respond to more complicated user queries, and keep current with VO developments. The ramp-up for this division is driven by the AOP plans to install a temporary data retrieval system at the ARCs in 2007, for use in the commissioning and science verification process. Therefore, we will bring one Archive Developer onto staff to install and maintain this system. The main Archive hardware will be purchased in 2008 in preparation for early science observing, so the staffing ramps up from there, reaching full staffing by 2010. We have not fully assessed the requirements to keep ALMA VO compatible. It is of special note that ALMA will likely define millimeter standards for the VO. The current plan includes no additional staff for VO, with the idea that the sum of all of the DB managers and archive developers across the project may be able to provide adequate expertise, but this should be reviewed.
32
NA Contract Support (42 FTE)
Science Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office Hardware MR&D: 1.5 FTE Management 10.5 FTE Repair & maintenance of NA built hardware 10 FTE Conduct research & develop new instrumentation Funded via contracts ($1M M&R; $4M Development) Technical Division キ Maintain NA archive hardware and database; キ Support data transfer from main ALMA archive; キ Support archive software maintenance; キ User support for ALMA User Database; キ Provide user feedback for archive query tool, bug reports, etc.; キ Improve archive based on local and user feedback; キ Provide web documentation on what the archive holds, how often it is updated, when user projects are ready, how to query the archive, on VO interface; キ Provide archive VO expertise, especially for radio community. These tasks are more detailed than called for in the AOP, which assumes that the archive consists primarily of data storage and retrieval hardware. The archive will not be static, but will grow both in its data content, products, data access protocols, and information content and will need to keep up with VO standards. It will therefore require archive software developers, and not simply technicians. These developers will install updates to the archive and provide input to the project on recommended updates and improvements. They will respond to user queries that are outside the expertise of the archive technicians. They will also be tasked with interfacing with the VO. Based on these considerations, we convert two of the Archive Technician positions described in the AOP into Archive developers. We retain the Database Manager and the other two Archive Technicians specified in the AOP, so that the staffing effort (5 FTE) remains the same. The archive technicians will load data into the archive, provide basic web documentation, and provide basic user feedback, forwarding more complicated user problems to the database manager or archive developers. The developers will install updates and patches to the archive and pipeline system, provide suggestions to the project for improving the archive based on local and user feedback, respond to more complicated user queries, and keep current with VO developments. The ramp-up for this division is driven by the AOP plans to install a temporary data retrieval system at the ARCs in 2007, for use in the commissioning and science verification process. Therefore, we will bring one Archive Developer onto staff to install and maintain this system. The main Archive hardware will be purchased in 2008 in preparation for early science observing, so the staffing ramps up from there, reaching full staffing by 2010. We have not fully assessed the requirements to keep ALMA VO compatible. It is of special note that ALMA will likely define millimeter standards for the VO. The current plan includes no additional staff for VO, with the idea that the sum of all of the DB managers and archive developers across the project may be able to provide adequate expertise, but this should be reviewed.
33
NA Contract Support (42 FTE)
Science Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office Software MR&D: 2 FTE Management & Coordination 10 FTE maintain & improve NA delivered software 7 FTE to develop algorithims for new capabilities Funded via contracts ($1M M&R; $1M Development) Data Management Division キ Maintain NA archive hardware and database; キ Support data transfer from main ALMA archive; キ Support archive software maintenance; キ User support for ALMA User Database; キ Provide user feedback for archive query tool, bug reports, etc.; キ Improve archive based on local and user feedback; キ Provide web documentation on what the archive holds, how often it is updated, when user projects are ready, how to query the archive, on VO interface; キ Provide archive VO expertise, especially for radio community. These tasks are more detailed than called for in the AOP, which assumes that the archive consists primarily of data storage and retrieval hardware. The archive will not be static, but will grow both in its data content, products, data access protocols, and information content and will need to keep up with VO standards. It will therefore require archive software developers, and not simply technicians. These developers will install updates to the archive and provide input to the project on recommended updates and improvements. They will respond to user queries that are outside the expertise of the archive technicians. They will also be tasked with interfacing with the VO. Based on these considerations, we convert two of the Archive Technician positions described in the AOP into Archive developers. We retain the Database Manager and the other two Archive Technicians specified in the AOP, so that the staffing effort (5 FTE) remains the same. The archive technicians will load data into the archive, provide basic web documentation, and provide basic user feedback, forwarding more complicated user problems to the database manager or archive developers. The developers will install updates and patches to the archive and pipeline system, provide suggestions to the project for improving the archive based on local and user feedback, respond to more complicated user queries, and keep current with VO developments. The ramp-up for this division is driven by the AOP plans to install a temporary data retrieval system at the ARCs in 2007, for use in the commissioning and science verification process. Therefore, we will bring one Archive Developer onto staff to install and maintain this system. The main Archive hardware will be purchased in 2008 in preparation for early science observing, so the staffing ramps up from there, reaching full staffing by 2010. We have not fully assessed the requirements to keep ALMA VO compatible. It is of special note that ALMA will likely define millimeter standards for the VO. The current plan includes no additional staff for VO, with the idea that the sum of all of the DB managers and archive developers across the project may be able to provide adequate expertise, but this should be reviewed.
34
NA ARC Total NA ARC Ops: 18 employees (13 FTE), $3.9M
(2) Head/Manager & Admin. Asst.; (6) Astronomers/analyst – proposal functions; (5) Astronomers – AoD & user support; (5) DB Manager, developers, techs – archive functions; Total NA ARC Ops: 18 employees (13 FTE), $3.9M (12) Engineer/tech – hardware repair; (10) Programmers – software maintenance; $5,000,000 – development (11 engineers+9 S/W developers 2 co-op students + $3M capital); Total Contract support: 44 employees (42 FTE), $7 M Total NA ARC + Contracts: 62 employees (55 FTE), $11M
35
Early Science operations
2006 2007 2008 2009 2010 2011 2012 2013 2nd Antenna At AOS: 2008q4 Early Science operations (16 element array): 2010q1 8 Antennas at AOS/ Call for Proposals: 2009q2
37
North American ALMA Operations and the North American ALMA Science Center Staffing Plan
NAASC Technical Division Plan John Webber ALMA Front End & Correlator IPT Leader National Research Council Canada NAASC Internal Review April
38
Maintenance and repair Development Upgrades & Production
Outline Maintenance and repair Development Upgrades & Production NAASC Review, Charlottesville, VA April 11, 2006
39
Maintenance and Repair Plan
Overall philosophy Do in Chile what absolutely must be done in Chile, e.g. Antennas Fiber optics networks Site infrastructure Develop in Chile the expertise to do things which could be done elsewhere but are more conveniently done in Chile OSF tasks Santiago tasks Provide staff and facilities elsewhere to do things which are highly specialized and for which it would expensive or impossible to develop and retain expertise in Chile Implementation Concept of Line Replaceable Units (LRUs) Item by item assessment of optimal maintenance and repair strategy NAASC Review, Charlottesville, VA April 11, 2006
40
Line Replaceable Units
An LRU is anything which can be replaced by a functioning unit, returning a system to service without effecting an actual repair, e.g.: Correlator board—in the correlator room at the AOS TB Entire Front End assembly—in an antenna cabin Digitizer module—in an antenna cabin Many LRUs may be returned to service by replacing a submodule and testing the assembly, e.g.: A cold receiver cartridge in the Front End A demultiplexer submodule within a Digitizer module Submodule repair may then be effected by: Replacing a circuit board, cable, etc., typically at the OSF Debugging at the component level and replacing a defective component Sending the submodule to a repair facility elsewhere NAASC Review, Charlottesville, VA April 11, 2006
41
Maintenance and Repair Estimates
Detailed plans for maintenance and repair of every LRU, submodule, and component are required but at present are in a very preliminary state Estimates for failure rates and repair time have been made, but there is little experience so far Estimates for the required staffing and total budgets for all these tasks have been made, and have been made roughly comparable to what experience with other arrays suggests is reasonable We must always bear in mind Dwight D. Eisenhower’s observation that “…plans are useless, but planning is indispensable.” NAASC Review, Charlottesville, VA April 11, 2006
42
NAASC M & R Concept Identify LRUs, subassemblies, etc. which require specialized staff or test equipment which would be expensive or unlikely to be provided in Chile Generate estimates of failure rates Generate estimates of labor and facilities required for repair Add them up to get an overall picture Allocate appropriate resources in the NAASC plan NAASC Review, Charlottesville, VA April 11, 2006
43
Repair Example: Band 6 Cold Cartridge
MTBF Specification: >20 years Estimate: 85 years if kept cold and not subjected to abuse; unknown in real life until several years of experience in the field (repeated temperature cycling, vibration, handling, power fluctuations, etc.) Adopted: hope to meet the specification of 20 years Repair procedure Diagnose problem (may require cool-down in the lab) Partially disassemble and replace defective part (e.g. SIS mixer, preamplifier, frequency multiplier, bias protection board, etc.) Reassemble and perform acceptance testing as for a new cartridge Repair supporting activities Maintain repair and test facilities Repair failed component or build a new one, so that stock for replacements is maintained NAASC Review, Charlottesville, VA April 11, 2006
44
Repair Estimate: Band 6 Cold Cartridge
Number of cartridges spares + 16 for ACA = 69 With MTBF = 20 years, expect 3.5 failures per year Repair and acceptance test estimate: 2 weeks Re-stock and facilities maintenance estimate: 2 weeks Staff required Engineers and technicians Estimated need is ½ of that needed for the construction project: 5 FTE during these activities Actual personnel likely to be shared between repair and R&D activities Total estimated labor: 1.5 FTE NAASC Review, Charlottesville, VA April 11, 2006
45
Total M & R Effort Major areas for which North America will have a supporting maintenance and repair role outside of Chile: Band 3 and Band 6 cold cartridges All Front End Local Oscillator, IF Switch, and Power Distribution submodules All Monitor & Control submodules All Back End LO, IF, and data transmission assemblies, including the photonic LO generation, with the primary exceptions of some digitizer submodules and photomixers The total estimate is 12 FTE including technical management Some Materials and Services (M&S) expenditures are also required for equipment maintenance and component-level repair, guessed at about $0.5M per year We expect a proportional effort in Europe and in Japan NAASC Review, Charlottesville, VA April 11, 2006
46
Research & Development
Many areas have been identified for which a sustained hardware R&D effort is needed for long-term viability: Additional bands to complete the suite of receivers A second-generation correlator VLBI data recording support Upgrades of front end cartridges Upgrade of the WVRs (e.g. tip-tilt pointing correction) Upgrade of Back End equipment Upgrade of antennas R&D in preparation for actually building equipment to be installed on ALMA must be supported at a core level of at least 4 FTE in North America in order to provide critical mass A crude estimate for M&S expenditures is $0.5M per year to support the R&D effort NAASC Review, Charlottesville, VA April 11, 2006
47
Upgrades and New Production
Upgrades and new production will be prioritized based on science The level of effort needed is estimated based on a sample project: construction of cold cartridges and local oscillators for a new band The estimate is 7 FTE for this task, in addition to support from the R&D staff who will also participate in construction, based on experience with Band 6 A crude estimate for M&S expenditures is $3M per year to support the construction effort NAASC Review, Charlottesville, VA April 11, 2006
48
Total Budgets Maintenance & Repair 12 FTE $0.5 M/year M&S R&D 4 $0.5
Upgrade and New Production 7 $3.0 Total requirement 23 FTE $4.0 M/year M&S Note that total budget for hardware and software maintenance and repair, development, and construction is $7M per year. Estimated staffing cost leaves only $2.5 M/yr for hardware M&S. Clearly, more refinement of the plan is required. NAASC Review, Charlottesville, VA April 11, 2006
51
North American ALMA Operations and the North American ALMA Science Center Staffing Plan
NAASC Data Management Division Debra Shepherd and Brian Glendenning ALMA Computing IPT National Research Council Canada NAASC Internal Review April
52
NAASC Data Management Overview
Contents NAASC Data Management Overview Scope/Functions Relationship to other ARCs Relation to rest of NRAO Staffing Levels & Ramp-up Construction CIPT – Operations transition
53
Data Management Scope Maintain existing capabilities of ALMA via software maintenance, increase performance or functionality via improved implementation if possible, and build upon the experience of scientific users (staff & external astronomers) to enable new capabilities and observing modes. Enable the move from relatively simple image cubes to complex spectral line mosaics (including interferometric OTF mosaics)
54
Data Management Scope ALMA Science Archive central to NAASC support of users. Software connects users with their data. User Experience feeds into pipeline heuristics via NAASC new software methods as collective experience increases. Operations Archive (Santiago) Dataset NAASC connects users with data ALMA Science Archive Queries Commands Query Responses Archive Subsystem State Data Correlator Data Quality Data Processed Data Archive Users, PI, VO, Staff User experience improves pipeline reduction. ALMA Staff Reduction Pipeline
55
Data Management Functions
Support current NA development – this could drift with time Maintain and improve software constructed by North America Scheduling Real-time software: Monitor & Control, Correlator Pipeline (science and quicklook) Offline reduction Develop & improve software for new observing modes Work with staff & user community to improve current observing modes and develop new modes (e.g. OTF interferometric mosaics) Provide staff & user support Proposal submission & preparation tools Status & interpretation of pipeline processing scripts Simulation capabilities & Off-line reduction User documentation
56
Software Maintenance From “Facts & Fallacies of Software Engineering” (R. Glass) Software maintenance consumes 40-80% of lifecycle costs Software maintenance is: Enhancing capability (60%) Changing environments (HW or SW) (18%) Error correction (17%) What people usually think of Other (5%) “Maintenance is a solution, not a problem.”
57
Deputy & Software Coordinator Pipeline Automated Processing
NAASC Data Management Organization Assumes: ARC Science Division: archive SW developers 3 archive technicians Beyond-ARC Science Development Division: advanced user support SW developers NAASC Data Management Division Head ACA Archive Observation Preparation Operations Support Telescope Calibration Coordinate with International ALMA Deputy & Software Coordinator Software Maintenance & Repair Real-time Control Real-time Correlator Scheduling . Offline & Pipeline Software Development: New observing modes PST/OT Pipeline status & results Simulation Offline reduction Documentation Offline Reduction & Imaging Pipeline Automated Processing User & Staff Support
58
Relation to other ARCs Construction project will deliver an integrated system based on common planning and standards. To avoid duplication of effort, ARCs should specialize NAASC planning assumption: To start: NA will be responsible for the software developed in NA. Possible issue: interest in innovative/state-of-the-art software (Pipelines, VO) more than other areas (control, software tools). Needs do not follow interests… Standards will continue to be important, e.g. Same archive at all sites (archive hardware, ALMA software & Oracle RDBMS software configurations must be tightly controlled). Always a strong tendency to drive apart on OS, etc… Core ARC software matters will have to be tightly coordinated amongst all ARCs and Chile This coordination is not easy during Construction – it will be more difficult during Operations.
59
Relation to other NRAO telescopes
Where cost-effective, NRAO should have common software systems. Collaboration not simple given international nature of ALMA but we should be able to do better (c.f. e2e project) Should there be an NRAO-wide data center? Might help minimize tendency to duplicate archive hardware, software systems, etc…
60
Staffing Assumptions Current Computing IPT Staff
280 FTE-y bilateral project, 140 FTE-y in NA +90 FTE-y supplied by NAOJ, 30 FTE-y at the NRAO 19.9 current FTEs in NA according to plan Does not include CASA personnel on NRAO operations budget (~5) Does not include NAOJ supplied staff to NRAO (in-kind (2.5), and in-cash (4)). Planning assumption is that operations budgets should start picking up staff in 2008, complete ramp-up by end 2011. NAASC DM staffing plan Rule of thumb: roughly 10% of development effort = size of maintenance team. Thus: 140 FTE-y 14 FTEs Common sense observation: modern Observatories do not lose software development staff between construction and early operations. Thus, there should be about 20 FTEs in NAASC.
61
Staffing Totals NAASC DM software maintenance, repair & development:
2 FTEs for management & coordination 10 FTEs for maintenance & repair 3 FTEs – Correlator 1 FTE – Common software 4.5 FTEs – Monitor & Control 1.5 FTEs – Integration & Testing 7 FTEs for development & user support 1 FTE – Systems Requirements 1 FTE - Scheduling 1 FTE – Pipeline 2 FTEs – Offline 2 FTEs – User Support Note: Additional cost to support hardware for developmental pipeline: $300K (US$2006) in 2011; $80K/year thereafter. Note: Science division (ARC): 2 Archive SW FTEs & Science Development Division (beyond ARC): 4 Advanced User Support SW FTEs
62
Staffing Ramp-up Construction: NAASC Ops: 0.0 10.0 5.0 20.0 15.0 30.0
Note: CIPT estimates do not include: Most of CASA at NRAO Interim operations NAOJ contributions at NRAO ~ 5 FTE-y of two-antenna impact 0.0 10.0 5.0 20.0 15.0 30.0 25.0 2006 2007 2008 2009 2010 2011 2012 Construction: 19.9 19.9 17.8 9.5 9.9 9.9 0.0 NAASC Ops: 0.0 0.0 1.2 9.5 9.1 9.1 19.0
63
Questions?
65
NAASC “Beyond the ARC” Science Crystal Brogan NAASC
North American ALMA Operations and the North American ALMA Science Center Staffing Plan NAASC “Beyond the ARC” Science Crystal Brogan NAASC National Research Council Canada NAASC Internal Review April
66
NAASC: Beyond the ARC “Beyond ARC” User Services NAASC
Beyond ARC is needed to provide advanced user support, algorithm development, student programs, EPO, grants NAASC “Satellite” EU ARCs ARCs provide basic user interface, as well as basic archive, software, and hardware maintenance and development EU ARC (ESO) NA ARC Joint ALMA Observatory J ARC ? Beyond ARC is essential for NA to realize the full benefits of ALMA NAOJ
67
“Beyond ARC” Science (8 FTE)
NAASC Head Office (1 astronomer) Science Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office NAASC Head Office: Paul Vanden Bout until Jan ; new Head to be appointed May Primary interface to U.S. community; sets NAASC priorities Interacts with NSF and other Science Centers (Herschel, Spitzer, etc.) Sets NA EPO priorities Responsible to NRAO director for entire NAASC The NAASC will have a director who is responsible for all of the science center activities, including the NA ARC, the Science Development Division, EPO, and Chilean Affairs. They will interact with the rest of NRAO and plan NA ALMA activities in the larger context of NRAO. The NAASC director will interact with NSF and other science centers and observatories, to help chart the evolution of the NAASC. The director will be a research astronomer, to be hired in mid Originally they will report to the NA ALMA Project Manager, but at the end of the construction phase these two positions could be merged.
68
“Beyond ARC” Science (8 FTE)
Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office Science Development Division (1 astronomer) Science Development Division: Oversees all Beyond ARC science activities Interacts with NA ARC Head and community to identify community needs & desires outside of ARC core functions Staffed in 2009 for first CfP The head of the Science Development division will manage the division and interact with the other divisions, particularly with the ARC Science Division. This person would interface most directly with the U.S. user community, assessing their desires and priorities for services performed at the NAASC and promoting the full use of ALMA, especially outside the traditional radio and millimeter community. This position will be filled by a staff astronomer, and will be in place for the first Call for Proposals in 2009.
69
“Beyond ARC” Science (8 FTE)
Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office User Grants Program: Strongly endorsed in Decadal Report Envisioned to be similar to Spitzer, Chandra, HST, Hershel cost ~10 M As yet unclear whether managing such a grants program would be a NAASC function or NSF directly Staffed in 2009 for first CfP User Grants Program (1 Admin) The head of the Science Development division will manage the division and interact with the other divisions, particularly with the ARC Science Division. This person would interface most directly with the U.S. user community, assessing their desires and priorities for services performed at the NAASC and promoting the full use of ALMA, especially outside the traditional radio and millimeter community. This position will be filled by a staff astronomer, and will be in place for the first Call for Proposals in 2009.
70
“Beyond ARC” Science (8 FTE)
Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office Advanced User Support: Enable NA users to fully explore and exploit ALMAs capabilities Organizing observing and data reduction workshops; improved cookbooks and other reduction software “Friend” level help with: off-line data reduction, re-processing large and/or non-standard observing modes; support special (legacy type) projects Development of new approaches and algorithms for calibration and imaging Developers already in place; Astronomers 2010 Advanced User Support (2 Astronomers 4 Programmers) The head of the Science Development division will manage the division and interact with the other divisions, particularly with the ARC Science Division. This person would interface most directly with the U.S. user community, assessing their desires and priorities for services performed at the NAASC and promoting the full use of ALMA, especially outside the traditional radio and millimeter community. This position will be filled by a staff astronomer, and will be in place for the first Call for Proposals in 2009.
71
“Beyond ARC” Science (8 FTE)
Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office Professional Development: Oversee and mentor ALMA Fellows and student programs Plan and organize ALMA scientific workshops (i.e. Z-machines meeting Jan. 2006); we plan at least one per year from now on First astronomer needed as CfP approaches; First in 2008 and second in 2010 Professional Development (2 Astronomers) The head of the Science Development division will manage the division and interact with the other divisions, particularly with the ARC Science Division. This person would interface most directly with the U.S. user community, assessing their desires and priorities for services performed at the NAASC and promoting the full use of ALMA, especially outside the traditional radio and millimeter community. This position will be filled by a staff astronomer, and will be in place for the first Call for Proposals in 2009.
72
“Beyond ARC” Science (8 FTE)
Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office Postdocs & Students: ALMA Fellows: traveling postdocs similar to Hubble, Chandra, Spitzer, and some Janskys. 2 per year for 3 year appointments; begin 2010 ALMA Postdocs: Stationed at NAASC – hands on experience with the telescope with trips to Chile. 2 per year for 3 year appointments; begin 2007 ALMA Predocs: similar to current NRAO predocs; 2 per year stationed at NAASC; begin 2011 No FTEs are assumed for Postdocs The head of the Science Development division will manage the division and interact with the other divisions, particularly with the ARC Science Division. This person would interface most directly with the U.S. user community, assessing their desires and priorities for services performed at the NAASC and promoting the full use of ALMA, especially outside the traditional radio and millimeter community. This position will be filled by a staff astronomer, and will be in place for the first Call for Proposals in 2009. Postdocs & Students ( )
73
Chilean Affairs (1 Astronomer; 1 manager; 1 admin; 4 fiscal)
Science Division Proposal Functions User Science Support Archive Operations NA ARC Data Management Division Software M & R Development Hardware Technical Postdocs& students User Grants Program Professional Development Advanced User Support Science Development Division ALMA EPO Chilean Affairs NAASC Head Office Chilean Affairs: Small office in Santiago to handle AUI/NRAO Chilean business affairs; 7 Already present during construction and will simply transition to operations Needed for procurement, fiscal procedures, payroll, property management etc, because neither ALMA nor JAO exist in Chile as a legal entity A scientist is required to act as Chilean AUI/NRAO representative (currently Eduardo Hardy) See Op Plan appendix for more details The head of the Science Development division will manage the division and interact with the other divisions, particularly with the ARC Science Division. This person would interface most directly with the U.S. user community, assessing their desires and priorities for services performed at the NAASC and promoting the full use of ALMA, especially outside the traditional radio and millimeter community. This position will be filled by a staff astronomer, and will be in place for the first Call for Proposals in 2009.
74
NAASC Beyond the NA ARC Staffing
(9) Advanced User Support: workshops, schools, personal help, algorithm development (1) Data analysis grants program ($10M/yr) (12) ALMA Postdoc & Fellows (2) Pre-doctoral students (7) Chilean Affairs (5) EPO program Total Beyond ARC: 29 employees (11.6 FTE) $3.3M+$10M
75
Education and Public Outreach Mark Adams NRAO EPO Office
North American ALMA Operations and the North American ALMA Science Center Staffing Plan Education and Public Outreach Mark Adams NRAO EPO Office National Research Council Canada NAASC Internal Review April
76
Education and Public Outreach
FY 2006 NRAO EPO Overview International ALMA EPO Chilean ALMA EPO NRAO ALMA EPO Summary
77
Education and Public Outreach FY 2006 NRAO EPO Overview
FY06 EPO budget ~ $700K 14.35 FTE filled FTE vacant 9.70 FTE for 2 Science Centers 4.65 FTE for all other program elements Vacant position being redefined for EPO WWW Priorities WWW EPO content New brochures (general public, astro community) ALMA EPO definition
78
Education and Public Outreach FY 2006 NRAO EPO Overview
Other FY06 program elements GB Science Ctr: 44,717 visitors (CY 05) VLA Visitors Ctr: 21,897 visitors (CY 05) 2nd Annual NRAO / AUI Image Contest 2006 NRAO / AUI Calendar, poster series Science museum outreach NRAO Newsletter Exhibits, materials, staff support for 2 AAS & IAU Education: RET, WV & VA Gov Schools, Chautauqua Short Courses, RARECATS … Community Relations
79
Education and Public Outreach International ALMA EPO
EPO collaboratively designed/funded by partners: NRAO, ESO, NAOJ, JAO, Chile Activities that target an international audience Managed by ALMA EPO Working Group Executive-neutral EPO Coordinator in Chile supervised by Working Group
80
Education and Public Outreach International ALMA EPO
Possible program elements ALMA exhibits, ancillary materials, support for international astronomical community mtgs International ALMA web site International news release coordination Special event coordination ALMA facilities virtual tour (DVD, on-line) Hubble Heritage-like image program International education programs
81
Education and Public Outreach Chilean ALMA EPO
Significant ALMA EPO program in Chile important to ALMA’s long-term success Executive-neutral program of Spanish-language EPO for Chile: an ALMA priority Managed by Exec-neutral EPO Coordinator in Chile, with input & assistance from ALMA EPO Working Group Costs shared by partners
82
Education and Public Outreach Chilean ALMA EPO
Possible program elements Chilean ALMA web site Press coordination / distribution in Chile Priority participation for Chilean teachers in international education programs Astronomer & engineer visitation / exchange Traveling exhibits ALMA – Chile speakers’ bureau ALMA Science Centers: Santiago, San Pedro
83
Education and Public Outreach NRAO ALMA EPO
Conducted & managed by NRAO EPO Division for North American target audience Funded by ALMA Operations budget Program elements & priorities coordinated by EPO & NAASC Division Heads
84
Education and Public Outreach NRAO ALMA EPO
Program elements Create & manage ALMA EPO web content Design & staff ALMA exhibits at AAS mtgs, ALMA science mtgs in N Amer, NAASC workshops Generate ALMA material for brochures Write & distribute press releases in N America Distribute ALMA press releases via ViewSpace “Radio Astronomy Update” Organize press conferences Design, produce & distribute ALMA media kits
85
Education and Public Outreach NRAO ALMA EPO
Program elements (continued) Distribute ALMA images: on-line Image Gallery, calendar, posters, image DVD releases Produce ALMA-related ViewSpace programs mm / submm radio astronomy ALMA technology & engineering ALMA image tour ALMA science discoveries Produce & distribute ALMA-related education products (grant funding) Design & produce ALMA exhibits for GB Sci Ctr, VLA Vis Ctr, and NAASC (grant funding)
86
Education and Public Outreach NRAO ALMA EPO
Initial budget proposal FY FTE $130K FY FTE $130K FY FTE $315K FY 06 USD, no inflation FTEs are new positions Near-term priorities: WWW content, astro community mtgs (AAS, IAU), brochures
87
Education and Public Outreach Summary
ALMA: an international project of extraordinary scope and promise ALMA EPO program must deliver the Project’s scientific & technological excellence to: international astronomical community world-wide general public students & teachers of all ages international media Initiate ALMA EPO Working Group ASAP Initiate true NRAO ALMA EPO Program beginning in FY 07
89
NAASC WBS and Budget John Hibbard Acting Head, NA ARC
North American ALMA Operations and the North American ALMA Science Center Staffing Plan NAASC WBS and Budget John Hibbard Acting Head, NA ARC National Research Council Canada NAASC Internal Review April
90
NAASC Staff Requirements in 2013 = 99 employees
Science (11; 6.5 FTE) – Division head, 6 for proposal support, from submission to verification of observing blocks, plus 4 for data support (retrieval from archive and data reduction); this team has other duties, including duty at Array in Chile; estimate based on experience at VLA/VLBA plus Spitzer system; plus division head; Data Management (24 FTE) – 10 S/W Engineers for software maintenance, plus 7 S/W developers, plus 5 for maintaining archive, plus division head and deputy; estimate based on widespread experience that operations team = construction team in software; Technical Work in NTC (25; 23 FTE) – 12 for maintenance of hardware, plus 11 for development of new instrumentation and two co-ops; estimate obtained from NTC based on years of experience in hardware maintenance and development, including ALMA construction; Science Development (29; 11.1 FTE) – 12 Postdocs, 2 students, 5 education/public outreach; 7 for advanced support of users; 2 to run postdoc/predoc/summer school programs; 1 user grant administrator; estimate based on increment required in NRAO outreach program and in NAASC user support for ALMA; (7) Chile Office; (3) NAASC Head, ARC manager, & administrative aide
91
Cost to NSF of ALMA Operations
Year 2006 2007 2008 2009 2010 2011 2012 2013 NA Ops Cost to NSF $1.5 $5.0 $10.6 $15.9 $20.5 $24.0 $26.6 $27.3 User Grants Program $1.0 $3.0 $6.0 $10.0 Total Cost to NSF $21.5 $27.0 $32.6 $37.3 FTE – (NA) Chile Ops 2 10 33 53 59 64 FTE – NAASC 6 12 30 41 51 70 75 Total FTE 8 20 45 83 100 115 134 139 Dollar amounts shown are millions of US$(Y2003).
92
NA ALMA Operations WBS structure NA ALMA Operations
70000 Business & Facilities 75000 NA ALMA Science Center 71000 User Grants Program 74000 JAO Contracts 73000 NA Chile Ops 72000 NA ARC NAASC Chile Affairs M&R NA ARC 71100 Science Dev. 71200 ALMA EPO 71300 Chilean Affairs 71400 M&R Contracts 73100 Developmt Contracts 73200 Development Science Division 71110 Adv. User Support 71210 Intern’l EPO 71310 Software M & R 73110 Software Dev. 73210 Professn’l Dev. 71220 Chilean EPO 71320 Hardware M & R 73120 Hardware Dev. 73220 Proposal Functions 71111 Postdocs & students 71230 N.Am EPO 71330 User Sci Support 71112 Archive Operations 71120
93
NAASC Staffing Ramp-up
Number of Employees Number of FTEs Early Science operations (16 element array): 2010q1 2006 2007 2008 2009 2010 2011 2012 2013 2006 2007 2008 2009 2010 2011 2012 2013 Year 2nd Antenna At AOS: 2008q4 8 Antennas at AOS/ Call for Proposals: 2009q2
94
NAASC Budget: Cost to NSF
95
NAASC Budget: Cost to NSF
96
{ NA ALMA Operations WBS structure US$2003 (Based on earlier
70000 $37.3M NSF $39.1M $1.8M Canada $7.9M $10M $7.2M $14M Business & Facilities 75000 NA ALMA Science Center 71000 User Grants Program 74000 JAO Contracts 73000 NA Chile Ops 72000 NA ARC NAASC Chile Affairs $3.9M $3.3M $0.7M $2.2M $5M M&R NA ARC 71100 Science Dev. 71200 ALMA EPO 71300 Chilean Affairs 71400 M&R Contracts 73100 Developmt Contracts 73200 Development Science Division 71110 Adv. User Support 71210 Intern’l EPO 71310 Software M & R 73110 Software Dev. 73210 Professn’l Dev. 71220 Chilean EPO 71320 Hardware M & R 73120 Hardware Dev. 73220 Proposal Functions 71111 Postdocs & students 71230 N.Am EPO 71330 User Sci Support 71112 US$2003 (Based on earlier Org. Chart/WBS) Archive Operations 71120
97
Chile Operations, all MR&D & ARCs
NA ALMA Operations Total Cost to NSF: $37.3M NAASC Joint ALMA Observatory “Beyond ARC” cost: $4M + $10M Grants NA ARC Total NA: $25.1M Cost to NSF=$23.3M Chile Operations, all MR&D & ARCs NA ARC: $11.1M $5M development $1.1M S/W Maintenance $1.1M H/W Maintenance $3.9M ARC functions } JAO Budget NA Share of Chilean ALMA Ops: $14M } NA Share Beyond ARC US$2003 (Based on earlier Org. Chart/WBS) Canadian 7% NSF Budget
98
Current Budget based on recently outdated WBS/Staffing profile
Reassignment of ARC/Beyond ARC to parallel AOP plan as closely as possible Will likely move ~$0.8M from ARC to Beyond ARC Larger contingent in Technical division 20->25; but no budgetary effect since contract amount remains constant (means less M&S) Old WBS uses overhead rate; new WBS will use Directly Allocated Costs (DAC) Should reduce costs across the board
99
Questions?
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.