+ All Categories
Home > Documents > Information (CISE)Science and Engineering (CISE)...– Inte g) Informatics ( III) : technolo gy...

Information (CISE)Science and Engineering (CISE)...– Inte g) Informatics ( III) : technolo gy...

Date post: 29-May-2020
Category:
Upload: others
View: 6 times
Download: 0 times
Share this document with a friend
33
Computer and Information Science and Engineering (CISE) Science and Engineering (CISE) Exploring the frontiers of computing http://www.nsf.gov/dir/index.jsp?org=CISE March 2012 !
Transcript

Computer and Information Science and Engineering (CISE)Science and Engineering (CISE)

Exploring the frontiers of computing

http://www.nsf.gov/dir/index.jsp?org=CISE

March 2012

!

NSF Support of Academic Basic Research in Selected Fields – FY 2009

( t f t t l f d l t)(as a percentage of total federal support)

"#$%&'!"#$%&"#'() "*+ ,-&./#%0 1('%*(%

#($))'1-('"2 1('%*(%)

#*$+&'

#*$#"'

3*4'0-*&%*#"2 1('%*(%)

5'6% 1('%*(%)7

(& !!'

%)$#%'

3*8'*%%0'*8

9$:)'("2 1('%*(%)

,%$*)'

(&$!!'

;22 1('%*(% "*+ 3*8'*%%0'*8 <'%2+)

3*8'*%%0'*8

*Excludes the National Institutes of HealthSource: NSF Survey of Federal Funds for Research and Development

Overview of CISE SupportCISE Supports • Investigator-initiated research in all areas of• Investigator-initiated research in all areas of

computer and information science and engineeringg g

• Cutting-edge national computing and information infrastructure for research and education

• Education and training of the next generation of computer scientists and engineers

CISE Organization

=66'(% -6 #$% ;))')#"*# >'0%(#-0 6-0 ,?13; ' # # >' # - . / 0 1;))')#"*# >'0%(#-0@ -2$ .32435 /3034134

, #' + ,-&./#%0 "*+ ? 6 #' +,-&./#'*8 "*+,-&&/*'("#'-*)<-/*+"#'-*)

>' ' ' >' #

,-&./#%0 "*+A%#B-0C1:)#%&)

>'4')'-* >'0%(#-0

?*6-0&"#'-* "*+?*#%22'8%*#1:)#%&)

>'4')'-* >'0%(#-0>'4')'-* >'0%(#-0>0D 1/)"**% E"&F0/)($

>'4')'-* >'0%(#-0-2$ 67180 932:;<<=

>'4')'-* >'0%(#-0-2$ >=?32@ A3B8<32

G3=-127B8=2387 C=2D7=EB174B7E

=?;FCC1B7 =C G487H2381I7

J 81 181

H?=-127B8=2387 C=2 K1=<=H1B3<

LB174B7E

!91-127B8=2387 C=2

938075381B3< M N0OE1B3<LB174B7E

1H3=?13

FCC1B7 =C G48724381=43<L 1 M P 1 1

JB81I1817E

,?13-127B8=2387 C=2 Q=5R;87234@ G4C=25381=4 LB174B7 1H3

-127B8=2387 C=2 L=B13<SK703I1=23< 34@ PB=4=51B

LB174B7E

=99

LB174B7 M P4H1477214H34@ G4C=25381=4 LB174B734@ P4H1477214H

3EI-127B8=2387 C=2 P@;B381=434@ >;534 T7E=;2B7E

3*8-127B8=2387 C=2

FCC1B7 =C N=<32 N2=H235E

=,?

,?13 ') -*% -6%2%4%* 0%)%"0($>'0%(#-0"#%) "*+=66'(%) "# A1< P4H1477214H =,?

FCC1B7 =CQOU7214C23E82;B8;27

=66'(%) "# A1<

CISE Organization and Core Research Programs,?13,?13

=66'(% -6 #$% ;))')#"*#>'0%(#-0

=66'(% -6 #$% ;))')#"*#>'0%(#-0

Computing and Communications

Foundations (CCF)

Computing and Communications

Foundations (CCF)Computer and Network

Systems (CNS)Computer and Network

Systems (CNS)Information and

Intelligent Systems (IIS)

Information and Intelligent Systems

(IIS)

J<H=218051B.=;4@381=4EJ<H=218051B.=;4@381=4E

Q=5R;872 LOE875ET7E732B0

Q=5R;872 LOE875ET7E732B0

>;534 Q748727@Q=5R;814H

>;534 Q748727@Q=5R;814H

Q=55;41B381=4 34@G4C=25381=4.=;4@381=4E

Q=55;41B381=4 34@G4C=25381=4.=;4@381=4E

V78?=2W14HX7B04=<=HO 34@

LOE875E

V78?=2W14HX7B04=<=HO 34@

LOE875E

G4C=25381=4G487H2381=4 34@G4C=25381BE

G4C=25381=4G487H2381=4 34@G4C=25381BE

L=C8?327 34@>32@?327

.=;4@381=4E

L=C8?327 34@>32@?327

.=;4@381=4ET=U;E8 G487<<1H74B7T=U;E8 G487<<1H74B7

QGLP Q2=EE Q;8814H N2=H235E

Computing J ,-&&/*'("#'-* <-/*+"#'-*) K,,<Lhttp://www.nsf.gov/div/index.jsp?org=CCF

Supports research and education projects that explore the foundations of computing and communication

p g j p g

the foundations of computing and communication devices and their usage.

– Algorithmic Foundations (AF): Innovative research characterized by algorithmic thinking and algorithm design accompanied byby algorithmic thinking and algorithm design, accompanied by rigorous mathematical analysis.

– Communications and Information Foundations (CIF): Transformative research addressing the theoreticalTransformative research addressing the theoretical underpinnings and current and future enabling technologies for information acquisition, transmission, and processing in communication and information networks.

– Software and Hardware Foundations (SHF): Foundational research essential to advance the capability of computing systems, including software and hardware components, systems, and other artifacts.y ,

CCF’s Program Directors • Algorithmic Foundations (AF)

– Mitra Basu, Bala Kalyanasundaram (Georgetown), Dmitry Maslov

Computer and Information Foundations (CIF)• Computer and Information Foundations (CIF)– John Cozzens, Phil Regalia (Catholic Univ.)

• Software and Hardware Foundations (SHF)– Nina Amla, Almadena Chtchelkanova,

Sol Greenspan, John Reppy (U of Chicago)– Sankar Basu, Ahmed Louri (U of Arizona)

http://www.nsf.gov/div/index.jsp?org=CCF

Computer and Network Systems (CNS)Supports research and education activities that invent new computing and networking technologies and that explore new ways to make use of existing technologies.

– Computer Systems Research (CSR): Transformative research on fundamental scientific and technological advances leading to the development of future generation computer systems; includes

lti hit t di t ib t d l ti bil b dd dmulti-core architectures; distributed, real-time, mobile, embedded devices; pervasive, ubiquitous and mobile computing; cloud computing; file and storage systems; operating systems; reliable, fault-tolerant and secure hard/middle/software.

– Networking Technology and Systems (NeTS): Transformative research on fundamental scientific and technological advances leading to the understanding, development, engineering, and management of future generation computer networksmanagement of future generation computer networks.

http://www nsf gov/div/index jsp?div=CNShttp://www.nsf.gov/div/index.jsp?div=CNS

Supports research and education activities that study the

Information and Intelligent Systems (IIS)Supports research and education activities that study the inter-related roles of people, computers, and information.

– Human Centered Computing (HCC): Research that explores creative ideas novel theories and innovative technologies that advance ourideas, novel theories, and innovative technologies that advance our understanding of the complex and increasingly coupled relationships between people and computing.

– Information Integration and Informatics (III): Information technology g ( ) gyresearch on the processes and technologies involved in creating, managing, visualizing, and understanding diverse digital content in circumstances ranging from individuals through groups, organizations, and societies, and from individual devices to globally-distributed systems and that can transform all stages of the knowledge life cyclesystems, and that can transform all stages of the knowledge life cycle.

– Robust Intelligence (RI): Research that encompasses all aspects of the computational understanding and modeling of intelligence in complex, realistic contexts to advance and integrate the traditions of p gartificial intelligence, computer vision, human language research, robotics, machine learning, computational neuroscience, cognitive science, and related areas.

!*http://www.nsf.gov/div/index.jsp?div=IIS

Applying to Core Programs• Program Solicitations:

– CCF: NSF 11-557– CNS: NSF 11-555

IIS NSF 11 6

Q==2@14387@L=<1B18381=4E– IIS: NSF 11-556

• Project Types:– Large: $1,200,001 to $3,000,000; up to 5 years, collaborative teams

M di $500 001 t $1 200 000 t 4 lti i ti t t

L=<1B18381=4E

– Medium: $500,001 to $1,200,000; up to 4 years, multi-investigator teams– Small: up to $500,000; up to 3 years, one or two investigator projects

• CISE-wide Submission Windows:Large: November 1 28 annually– Large: November 1 - 28, annually

– Medium: September 15 - 30, annually– Small: December 1 – 19, annually

• PI Limit:• PI Limit: – Participate in no more than 2 “core” proposals/year

.=2 3 B=5R27074E1I7 <1E8 =C QGLP C;4@14H =RR=28;41817E I1E18Y.=2 3 B=5R27074E1I7 <1E8 =C QGLP C;4@14H =RR=28;41817ES I1E18Y088RYZZ???$4EC$H=IZC;4@14HZRH5[<1E8$\ER]=2H^QGLP

CISE proposals and funding 50%

6,000

7,000

rds

30%

40%

4 000

5,000

Rate

als

and

Awar

20%

2 000

3,000

4,000

Fund

ing

R

Prop

osa

10%1,000

2,000

0%01996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

Fiscal Year

Proposals Awards Funding Rate

Snapshot of FY 2011 Activities

CISEResearch Budget ($M) $636MResearch Budget ($M) $636MNumber of Proposals 5,998Number of Awards 1,378S ccess Rate* 20%Success Rate* ~20%Average Award Size $164KNumber of Panels Held 247

CISESenior Researchers 6,812

Number of People Supported 14,488 Other Professionals 605

Postdoctoral Associates 371_G4B<;@7E E;RR<75748E

Graduate Students 4,882

Undergraduates 1,818

G0"*# 90-.-)"2 G/'+% KG9GLG0"*# 90-.-)"2 G/'+% KG9GL• Provides guidance for preparationProvides guidance for preparation

and submission of proposals to NSF

• Describes process – and criteria –by which proposals will be reviewed

• Outlines reasons why a proposal may be returned without review

• Describes process for withdrawals, returns & declinations

90-.-)"2 I%4'%B "*+ 90-(%))'*8

!+

90-.-)"2 I%4'%B ,0'#%0'"• Throughout the review process proposals are• Throughout the review process, proposals are

evaluated against:National Science Board approved merit review– National Science Board approved merit review criteria:• What is the intellectual merit of the proposed activity?p p y• What are the broader impacts of the proposed

activity?– Program specific criteria (stated in the program

solicitation).

!#

?*#%22%(#/"2 !%0'# ,-*)'+%0"#'-*)• How important is the proposed activity to advancing knowledgeHow important is the proposed activity to advancing knowledge

and understanding within its own field or across different fields?

• How well-qualified is the proposer (individual or team) to conduct the project? (If appropriate, the reviewer will comment on the quality of prior work.)

• To what extent does the proposed activity suggest and explore• To what extent does the proposed activity suggest and explore creative, original or potentially transformative concepts?

• How well-conceived and organized is the proposed activity?g p p y

• Is there sufficient access to resources?

!"

H0-"+%0 ?&."(#) ,-*)'+%0"#'-*)H0-"+%0 ?&."(#) ,-*)'+%0"#'-*)• How well does the activity advance discovery and

d t di hil ti t hi t i i dunderstanding while promoting teaching, training, and learning?

• How well does the activity broaden the participation ofHow well does the activity broaden the participation of underrepresented groups (e.g., gender, ethnicity, disability, geographic)?

• To what extent will the activity enhance the infrastructure for research and education, such as facilities, instrumentation, networks, and partnerships?

• Will the results be disseminated broadly to enhance scientific and technological understanding?

• What may be the benefits of the proposed activity to society?

!)

90-.-)"2) 8%# >%(2'*%+ F%("/)% M• The proposal was not considered to be

competitive based on the merit review criteria and the program office concurred.

• The proposal had flaws or issues identified by the program office.

• The program funds were not adequate to fund all gcompetitive proposals.

!&

I%4')'-*) "*+ I%)/F&'))'-*)I%4')'-*) "*+ I%)/F&'))'-*)Points to consider– Do the reviewers and the NSF Program Officer

identify significant strengths in your proposal?– Can you address the weaknesses that reviewers

and the Program Officer identified?– Are there other ways you or your colleagues think

you can strengthen a resubmission?

If you have questions, contact the cognizant P Offi !Program Officer!

,*

Sample of CISE Cross-Cutting Programs. 0 1 <1 8 C QGLP C @1 8 181 1 18

• Cross-Division

.=2 3 B=5R27074E1I7 <1E8 =C QGLP C;4@14H =RR=28;41817ES I1E18Y088RYZZ???$4EC$H=IZC;4@14HZRH5[<1E8$\ER]=2H^QGLP

– Expeditions in Computing Explore new frontiers in computing and information science.

• Cross-DirectorateC ti Ed ti f th 21st C t (CE21)– Computing Education for the 21st Century (CE21)

Engage larger number and diversity of students and educators in computing education and learning.

– Cyber-Physical Systems (CPS) I t ti f t ti i ti d t l i t h i l tIntegration of computation, communication, and control into physical systems.

– Secure and Trustworthy Cyberspace (SaTC) Address cybersecurity from one or more of three perspectives: Trustworthy Computing Systems; Social, Behavioral and Economics; and Transition to Practice.

Smart Health and Wellbeing (SHB)– Smart Health and Wellbeing (SHB)Transform healthcare knowledge, delivery, and quality of life through IT.

• Cross-Agency– National Robotics Initiative (NRI)National Robotics Initiative (NRI)

Development and use of robots that work alongside, or cooperatively with, people.

Expeditions-in-ComputingExploring scientific frontiers that promise profound

• Provides the CISE community an opportunity to pursue biti f d t l h d th t i t

Exploring scientific frontiers that promise profound innovations in computing

ambitious, fundamental research agendas that promise to define the future of computing and information .

• Successful projects bring together teams of investigators with diverse expertise within or across departments or institutionsdiverse expertise within or across departments or institutions to identify compelling, transformative research agendas that seek disruptive innovations in CISE.

• !"#$%#&';R 8= `,S***S*** R72 O732C=2 C1I7 O732E

• (%)%*' G53H7 Q27@18Y !"#$"#%&'($)#*(+,(%)%*'

! PaR7@181=4E N2=R=E3< R72G4I7E81H38=2

• +,-$.%#,/'N27<151432O N2=R=E3< b27c;127@dY L7R875U72 !* ,*!(

&'($)#*(+,

N27<151432O N2=R=E3< b27c;127@dY L7R875U72 !*S ,*!(.;<< N2=R=E3< Y JR21< !*S ,*!%

Expeditions-in-Computing

• 10 awards made so far

H%:-*+ !--0%N) 5"B• Variability-aware Software for Efficient Computing with Nanoscale Devices, UCSD, UCLA, UIUC, Stanford, Michigan, 2010

• Customizable Domain-Specific Computing, UCLA UCSB Rice Ohio State 2009

E%"2#$("0% J O%22F%'*8• Computational Behavioral Science: Modeling, Analysis, and Visualization of Social and Communicative Behavior, Georgia Tech, MIT, Boston U, UIUC, USC, Carnegie Mellon, 2010

• Next-Generation Model Checking and Abstract

,-&.2%P'#: Q$%-0:R S/"*#/&,-&./#'*8R J ,0:.#-80".$:• Understanding, Coping with, and Benefiting

from Intractability – Princeton, Rutgers, NYU, Institute for Advanced Study, 2008

UCLA, UCSB, Rice, Ohio State, 2009

• The Molecular Programming Project, CalTech, U Washington, 2008

• Next-Generation Model Checking and Abstract Interpretation with a Focus on Embedded Control and Systems Biology, Carnegie Mellon, Stony Brook, NYU, UMD, Pitt, Lehman College, JPL, 2009

1/)#"'*"F'2'#: J 3*4'0-*&%*#• Understanding Climate Change: A Data Driven Approach – Minnesota, Northwestern, NC State, NC A&T State, 2010

• Computational Sustainability: Computational Methods for a Sustainable Environment

O'0%2%)) J ?*#%0*%#• Open Programmable Mobile Internet 2020, Stanford, 2008

I-F-#'()• RoboBees: A Convergence of Body, Brain and Colony – Harvard, Northeastern, 2009

Methods for a Sustainable Environment, Economy, and Society – Cornell, Oregon State, Bowdoin, 2008

G53H7 Q27@18Y !"#$"#%&'($)#*(+,

Secure and Trustworthy Cyberspace (SaTC)S i N ti ’ bSecuring our Nation’s cyberspace

• Aims to support fundamental scientific advances and technologies to protect cyber systemsand technologies to protect cyber-systems (including host machines, the Internet and other cyber-infrastructure) from malicious behavior, while preserving privacy and promoting usability.

G53H7 Q27@18Y -.('/0+12/

while preserving privacy and promoting usability.• Proposals must address cybersecurity from one

or more of three perspectives: e Trustworthy Computing SystemsTrustworthy Computing Systemse Social, Behavioral and Economicse Transition to Practice

01230,4* 567,/'• 1&"22

;R 8= `+**S***=I72 ( O732E

• !%+'/&;R 8= `!S,**S***=I72 % O732E

• <0-*#'%0;R 8= `!*S***S***=I72 + O732E

Q2=EE -127B8=2387 L=<1B18381=4Y QGLPS 9NLS FQGS 34@ LKP

Smart Health & Wellbeing (SHB)

• Fundamental technical and scientific issues to support the transformation of healthcare from reactive and hospital centered to preventivereactive and hospital-centered to preventive, proactive, evidence-based, person-centered and focused on wellbeing rather than disease.

1230,4* 567,/'• Q:.% ?@ 3P.2-0"#-0:

`,**S*** 8= `#**S***=I72 , ( O732E

• Must relate to a key health problem and must make a fundamental contribution to ENG, CISE or SBE domains

=I72 , ( O732E• Q:.% ??@ ?*#%80"#'4%

`#**S**! 8= `,S***S***=I72 % + O732E

CISE, or SBE domains.

>' '# 2 E 2#$

I%)%"0($ Q$0/)#)I%)%"0($ Q$0/)#)

>'8'#"2 E%"2#$?*6-0&"#'-*?*60")#0/(#/0%3'41#5"+(2* "'%3'4#"*+#62+6#)

>"#" #- T*-B2%+8% #->%(')'-*

7)"*1'('8 6'%)#6'2)#+"('+,

3&.-B%0%+ ?*+'4'+/"2)9')#8(:)%; )'"<=)%;

)%62"+)%

1%*)-0)R >%4'(%)R "*+I-F-#'()

0)'*1# <"*)% "2+6"+(1'4

Q2=EE -127B8=2387 L=<1B18381=4Y QGLPS PVDS 34@ LKP

National Robotics Initiative (NRI)

A ti ll t d t

Developing the next generation of collaborative robots to enhance personal safety, health, and productivity

• A nationally concerted cross-agency program to provide U.S. leadership in science and engineering research and education aimed at the development and use of cooperative robots thatdevelopment and use of cooperative robots that work alongside people across many sectors.

Q27@18Y >#(*+1= 71<1+(2* ?"<

f </*+"&%*#"2 0%)%"0($ '* 0-F-#'() )('%*(% J %*8'*%%0'*8f U*+%0)#"*+'*8 #$% 2-*8 #%0& )-('"2R F%$"4'-0"2R "*+ %(-*-&'( '&.2'("#'-*)

22 6 $ #' '#

I%)%"0($ Q$0/)#)

Q2=EE -127B8=2387 L=<1B18381=4Y QGLP P>T PVD 34@ LKP

"(0-)) "22 "0%") -6 $/&"* "(#'4'#:f U)% -6 0-F-#'() #- 6"('2'#"#% "*+ &-#'4"#% 1Q3! 2%"0*'*8 "(0-)) #$% T VW(-*#'*//&

Q2=EE -127B8=2387 L=<1B18381=4Y QGLPS P>TS PVDS 34@ LKP9;<81 3H74BO Q=55185748Y VL.S VJLJS VG>S gL-J

Computing Education for the 21st Century (CE21)(CE21)

Enhancing computational competencies

QF9NgXGVD

TPLPJTQ> FVXPJQ>GVD MhPJTVGVD

• G4B273E7 4;5U72 34@ @1I72E18O =C 6!% E8;@748E 34@ 873B072E ?0=

G-"2)@

KTFJ-PVGVD

QF9NgXGVDP-gQJXGFV !% E8;@748E 34@ 873B072E ?0=

@7I7<=R 34@ R23B81B7 B=5R;8381=43<B=5R7874B17E$

• G4B273E7 4;5U72 =C R=E8E7B=4@32ONJTXGQGNJXGFV G4B273E7 4;5U72 =C R=E8E7B=4@32OE8;@748E ?0= 03I7 U3BWH2=;4@47B7EE32O 8= R;2E;7 @7H277E 14B=5R;814H 34@ B=5R;8381=43<<O

,3XV

R H R O14874E1I7 C17<@E$

Q2=EE -127B8=2387 L=<1B18381=4Y QGLPS P>TS FQG

NSF-wide Opportunities for the CISE CommunityCommunity

• Faculty Early Career Development (CAREER)• Grants for Rapid Response Research (RAPID)• EArly-concept Grants for Exploratory Research

(EAGER)(EAGER)• Graduate Research Fellowship (GRF) Program• Research Experiences for Undergraduates (REU)Research Experiences for Undergraduates (REU)• Conferences, Summer Schools, and Workshops

.=2 3 B=5R27074E1I7 <1E8 =C VL. C;4@14H =RR=28;41817ES I1E18Y088RYZZ???$4EC$H=IZC;4@14HZ

Faculty Early Career Development (CAREER) Program(CAREER) Program

• The National Science Foundation's most prestigious awards in support of junior faculty who exemplify the role of teacher-scholars through:

• outstanding researchoutstanding research,• excellent education, and • the integration of education and research within

the context of the mission of their organizations.

89:; 8<=;;= 12373/-. >2%*%#& >32?/@37/• N01<3@7<R013S NJY 932B0 (*S ,*!,

088RYZZ@3E<$575$@27a7<$7@;Z4ECB1E7,*!,Z• N0=741aS JiY 93O !)S ,*!,

Support for Graduate and Undergraduate StudentsStudents

• Graduate Research Fellowship Program– Foundation-wide programs– Deadlines in mid-Nov

R h E i f U d d t (REU)• Research Experiences for Undergraduates (REU)– REU Sites

• Typically in summer but not strictly necessaryTypically in summer, but not strictly necessary• 8-10 students in a cohort environment• Deadline in August

– REU Supplements• Support for 1-2 students to work on existing project• Best to submit request by March but no strict deadline• Best to submit request by March but no strict deadline

Stay informed and get involved!• Subscribe to get NSF updates by email at www.nsf.gov.• Subscribe to receive special CISE announcements:

– Send a message to: [email protected] with no text in g j @ gthe subject or message body.

• Visit the CISE website often: http://www.nsf.gov/dir/index.jsp?org=CISE.• Talk to Program Directors:Talk to Program Directors:

http://www.nsf.gov/staff/staff_list.jsp?org=CISE&from_org=CISE

D78 VL. gR@387EUO P531<O

Opportunities for Community Engagement!pp y g g

• Volunteer to be a reviewer.• Write to program directors running programs you

are interested in• Visit NSF get to know your program(s) and program• Visit NSF, get to know your program(s) and program

director(s).• Participate in NSF-funded and hosted activities (e.g.,

workshops).• Send us your accomplishments; advertise your

research to other citizens through local radio or TVresearch to other citizens through local radio or TV, blogs, newspaper articles, etc.

Credits

• Copyrighted material used under Fair Use. If you are the copyright holder and believe your material has been used unfairly, or if you have any suggestions, y y, y y gg ,feedback, or support, please contact: [email protected].

• Except where otherwise indicated, permission is granted to copy, distribute, and/or modify all images in this document under the terms of the GNU Freeand/or modify all images in this document under the terms of the GNU Free Documentation license, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled “GNU Free Documentation license”Free Documentation license

• (http://commons.wikimedia.org/wiki/Commons:GNU_Free_Documentation_License).

• The inclusion of a logo does not express or imply the endorsement by NSF of the entities' products, services, or enterprises.


Recommended