---
_id: '11794'
abstract:
- lang: eng
text: We study individual rational, Pareto optimal, and incentive compatible mechanisms
for auctions with heterogeneous items and budget limits. For multi-dimensional
valuations we show that there can be no deterministic mechanism with these properties
for divisible items. We use this to show that there can also be no randomized
mechanism that achieves this for either divisible or indivisible items. For single-dimensional
valuations we show that there can be no deterministic mechanism with these properties
for indivisible items, but that there is a randomized mechanism that achieves
this for either divisible or indivisible items. The impossibility results hold
for public budgets, while the mechanism allows private budgets, which is in both
cases the harder variant to show. While all positive results are polynomial-time
algorithms, all negative results hold independent of complexity considerations.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Paul
full_name: Dütting, Paul
last_name: Dütting
- first_name: Monika H
full_name: Henzinger, Monika H
id: 540c9bbd-f2de-11ec-812d-d04a5be85630
last_name: Henzinger
orcid: 0000-0002-5008-6530
- first_name: Martin
full_name: Starnberger, Martin
last_name: Starnberger
citation:
ama: 'Dütting P, Henzinger MH, Starnberger M. Auctions with heterogeneous items
and budget limits. In: 8th International Workshop on Internet and Network Economics.
Vol 7695. Springer Nature; 2012:44–57. doi:10.1007/978-3-642-35311-6_4'
apa: 'Dütting, P., Henzinger, M. H., & Starnberger, M. (2012). Auctions with
heterogeneous items and budget limits. In 8th International Workshop on Internet
and Network Economics (Vol. 7695, pp. 44–57). Liverpool, United Kingdom: Springer
Nature. https://doi.org/10.1007/978-3-642-35311-6_4'
chicago: Dütting, Paul, Monika H Henzinger, and Martin Starnberger. “Auctions with
Heterogeneous Items and Budget Limits.” In 8th International Workshop on Internet
and Network Economics, 7695:44–57. Springer Nature, 2012. https://doi.org/10.1007/978-3-642-35311-6_4.
ieee: P. Dütting, M. H. Henzinger, and M. Starnberger, “Auctions with heterogeneous
items and budget limits,” in 8th International Workshop on Internet and Network
Economics, Liverpool, United Kingdom, 2012, vol. 7695, pp. 44–57.
ista: 'Dütting P, Henzinger MH, Starnberger M. 2012. Auctions with heterogeneous
items and budget limits. 8th International Workshop on Internet and Network Economics.
WINE: International Conference on Web and Internet Economics, LNCS, vol. 7695,
44–57.'
mla: Dütting, Paul, et al. “Auctions with Heterogeneous Items and Budget Limits.”
8th International Workshop on Internet and Network Economics, vol. 7695,
Springer Nature, 2012, pp. 44–57, doi:10.1007/978-3-642-35311-6_4.
short: P. Dütting, M.H. Henzinger, M. Starnberger, in:, 8th International Workshop
on Internet and Network Economics, Springer Nature, 2012, pp. 44–57.
conference:
end_date: 2012-12-14
location: Liverpool, United Kingdom
name: 'WINE: International Conference on Web and Internet Economics'
start_date: 2012-12-11
date_created: 2022-08-11T11:32:25Z
date_published: 2012-12-01T00:00:00Z
date_updated: 2023-02-21T16:28:29Z
day: '01'
doi: 10.1007/978-3-642-35311-6_4
extern: '1'
external_id:
arxiv:
- '1209.6448'
intvolume: ' 7695'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1209.6448
month: '12'
oa: 1
oa_version: Preprint
page: 44–57
publication: 8th International Workshop on Internet and Network Economics
publication_identifier:
isbn:
- '9783642353109'
issn:
- 1611-3349
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
record:
- id: '11794'
relation: later_version
status: public
scopus_import: '1'
status: public
title: Auctions with heterogeneous items and budget limits
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7695
year: '2012'
...
---
_id: '11795'
abstract:
- lang: eng
text: "We study multiple keyword sponsored search auctions with budgets. Each keyword
has multiple ad slots with a click-through rate. The bidders have additive valuations,
which are linear in the click-through rates, and budgets, which are restricting
their overall payments. Additionally, the number of slots per keyword assigned
to a bidder is bounded.\r\n\r\nWe show the following results: (1) We give the
first mechanism for multiple keywords, where click-through rates differ among
slots. Our mechanism is incentive compatible in expectation, individually rational
in expectation, and Pareto optimal. (2) We study the combinatorial setting, where
each bidder is only interested in a subset of the keywords. We give an incentive
compatible, individually rational, Pareto optimal, and deterministic mechanism
for identical click-through rates. (3) We give an impossibility result for incentive
compatible, individually rational, Pareto optimal, and deterministic mechanisms
for bidders with diminishing marginal valuations."
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Riccardo
full_name: Colini-Baldeschi, Riccardo
last_name: Colini-Baldeschi
- first_name: Monika H
full_name: Henzinger, Monika H
id: 540c9bbd-f2de-11ec-812d-d04a5be85630
last_name: Henzinger
orcid: 0000-0002-5008-6530
- first_name: Stefano
full_name: Leonardi, Stefano
last_name: Leonardi
- first_name: Martin
full_name: Starnberger, Martin
last_name: Starnberger
citation:
ama: 'Colini-Baldeschi R, Henzinger MH, Leonardi S, Starnberger M. On multiple keyword
sponsored search auctions with budgets. In: 39th International Colloquium on
Automata, Languages, and Programming. Vol 7392. Springer Nature; 2012:1–12.
doi:10.1007/978-3-642-31585-5_1'
apa: 'Colini-Baldeschi, R., Henzinger, M. H., Leonardi, S., & Starnberger, M.
(2012). On multiple keyword sponsored search auctions with budgets. In 39th
International Colloquium on Automata, Languages, and Programming (Vol. 7392,
pp. 1–12). Warwick, United Kingdom: Springer Nature. https://doi.org/10.1007/978-3-642-31585-5_1'
chicago: Colini-Baldeschi, Riccardo, Monika H Henzinger, Stefano Leonardi, and Martin
Starnberger. “On Multiple Keyword Sponsored Search Auctions with Budgets.” In
39th International Colloquium on Automata, Languages, and Programming,
7392:1–12. Springer Nature, 2012. https://doi.org/10.1007/978-3-642-31585-5_1.
ieee: R. Colini-Baldeschi, M. H. Henzinger, S. Leonardi, and M. Starnberger, “On
multiple keyword sponsored search auctions with budgets,” in 39th International
Colloquium on Automata, Languages, and Programming, Warwick, United Kingdom,
2012, vol. 7392, pp. 1–12.
ista: 'Colini-Baldeschi R, Henzinger MH, Leonardi S, Starnberger M. 2012. On multiple
keyword sponsored search auctions with budgets. 39th International Colloquium
on Automata, Languages, and Programming. ICALP: International Colloquium on Automata,
Languages, and Programming, LNCS, vol. 7392, 1–12.'
mla: Colini-Baldeschi, Riccardo, et al. “On Multiple Keyword Sponsored Search Auctions
with Budgets.” 39th International Colloquium on Automata, Languages, and Programming,
vol. 7392, Springer Nature, 2012, pp. 1–12, doi:10.1007/978-3-642-31585-5_1.
short: R. Colini-Baldeschi, M.H. Henzinger, S. Leonardi, M. Starnberger, in:, 39th
International Colloquium on Automata, Languages, and Programming, Springer Nature,
2012, pp. 1–12.
conference:
end_date: 2012-07-13
location: Warwick, United Kingdom
name: 'ICALP: International Colloquium on Automata, Languages, and Programming'
start_date: 2012-07-09
date_created: 2022-08-11T11:46:51Z
date_published: 2012-07-01T00:00:00Z
date_updated: 2023-02-21T16:28:31Z
day: '01'
doi: 10.1007/978-3-642-31585-5_1
extern: '1'
intvolume: ' 7392'
language:
- iso: eng
month: '07'
oa_version: None
page: 1–12
publication: 39th International Colloquium on Automata, Languages, and Programming
publication_identifier:
isbn:
- '9783642315848'
issn:
- 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
record:
- id: '11795'
relation: later_version
status: public
scopus_import: '1'
status: public
title: On multiple keyword sponsored search auctions with budgets
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7392
year: '2012'
...
---
_id: '11964'
abstract:
- lang: eng
text: A detailed investigation on the direct arylation of benzene with aryl bromides
by using first-row transition metals under high-temperature/high-pressure (high-T/p)
conditions is described. By employing a parallel reactor platform for rapid reaction
screening and discovery at elevated temperatures, various metal/ligand/base combinations
were evaluated for their ability to enable biaryl formation through C-H activation.
The combination of cobalt(III) acetylacetonate and lithium bis(trimethylsilyl)amide
was subjected to further process intensification at 200 °C (15 bar), allowing
a significant reduction of the catalyst/base loading and a dramatic increase in
catalytic efficiency (turnover frequency) by a factor of 1000 compared to traditional
protocols. The high-throughput screening additionally identified novel nickel-
and copper-based metal/ligand combinations that favored an amination pathway competing
with C-H activation, with the addition of ligands, such as 1,10-phenanthroline,
having a profound influence on the selectivity. In addition to metal-based catalysts,
high-T/p process windows were also successfully applied to transition-metal-free
systems, utilizing 1,10-phenanthroline as organocatalyst.
article_processing_charge: No
article_type: original
author:
- first_name: Bartholomäus
full_name: Pieber, Bartholomäus
id: 93e5e5b2-0da6-11ed-8a41-af589a024726
last_name: Pieber
orcid: 0000-0001-8689-388X
- first_name: David
full_name: Cantillo, David
last_name: Cantillo
- first_name: C. Oliver
full_name: Kappe, C. Oliver
last_name: Kappe
citation:
ama: 'Pieber B, Cantillo D, Kappe CO. Direct arylation of benzene with aryl bromides
using high‐temperature/high‐pressure process windows: Expanding the scope of C-H
activation chemistry. Chemistry – A European Journal. 2012;18(16):5047-5055.
doi:10.1002/chem.201103748'
apa: 'Pieber, B., Cantillo, D., & Kappe, C. O. (2012). Direct arylation of benzene
with aryl bromides using high‐temperature/high‐pressure process windows: Expanding
the scope of C-H activation chemistry. Chemistry – A European Journal.
Wiley. https://doi.org/10.1002/chem.201103748'
chicago: 'Pieber, Bartholomäus, David Cantillo, and C. Oliver Kappe. “Direct Arylation
of Benzene with Aryl Bromides Using High‐temperature/High‐pressure Process Windows:
Expanding the Scope of C-H Activation Chemistry.” Chemistry – A European Journal.
Wiley, 2012. https://doi.org/10.1002/chem.201103748.'
ieee: 'B. Pieber, D. Cantillo, and C. O. Kappe, “Direct arylation of benzene with
aryl bromides using high‐temperature/high‐pressure process windows: Expanding
the scope of C-H activation chemistry,” Chemistry – A European Journal,
vol. 18, no. 16. Wiley, pp. 5047–5055, 2012.'
ista: 'Pieber B, Cantillo D, Kappe CO. 2012. Direct arylation of benzene with aryl
bromides using high‐temperature/high‐pressure process windows: Expanding the scope
of C-H activation chemistry. Chemistry – A European Journal. 18(16), 5047–5055.'
mla: 'Pieber, Bartholomäus, et al. “Direct Arylation of Benzene with Aryl Bromides
Using High‐temperature/High‐pressure Process Windows: Expanding the Scope of C-H
Activation Chemistry.” Chemistry – A European Journal, vol. 18, no. 16,
Wiley, 2012, pp. 5047–55, doi:10.1002/chem.201103748.'
short: B. Pieber, D. Cantillo, C.O. Kappe, Chemistry – A European Journal 18 (2012)
5047–5055.
date_created: 2022-08-24T12:48:28Z
date_published: 2012-04-16T00:00:00Z
date_updated: 2023-02-21T10:09:35Z
day: '16'
doi: 10.1002/chem.201103748
extern: '1'
external_id:
pmid:
- '22396386'
intvolume: ' 18'
issue: '16'
language:
- iso: eng
month: '04'
oa_version: None
page: 5047-5055
pmid: 1
publication: Chemistry – A European Journal
publication_identifier:
eissn:
- 1521-3765
issn:
- 0947-6539
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Direct arylation of benzene with aryl bromides using high‐temperature/high‐pressure
process windows: Expanding the scope of C-H activation chemistry'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 18
year: '2012'
...
---
_id: '11963'
abstract:
- lang: eng
text: 'Peroxides and ethers in flow: 2-Carbonyl-substituted phenols and β-ketoesters
react safely with ethers in a microreactor environment using a copper catalyst
and an organic peroxide (TBHP). This protocol results in unsymmetrical acetal
scaffolds not easily available otherwise (see scheme).'
article_processing_charge: No
article_type: letter_note
author:
- first_name: G. Sathish
full_name: Kumar, G. Sathish
last_name: Kumar
- first_name: Bartholomäus
full_name: Pieber, Bartholomäus
id: 93e5e5b2-0da6-11ed-8a41-af589a024726
last_name: Pieber
orcid: 0000-0001-8689-388X
- first_name: K. Rajender
full_name: Reddy, K. Rajender
last_name: Reddy
- first_name: C. Oliver
full_name: Kappe, C. Oliver
last_name: Kappe
citation:
ama: Kumar GS, Pieber B, Reddy KR, Kappe CO. Copper-catalyzed formation of C-O bonds
by direct α-C-H bond activation of ethers using stoichiometric amounts of peroxide
in batch and continuous-flow formats. Chemistry - A European Journal. 2012;18(20):6124-6128.
doi:10.1002/chem.201200815
apa: Kumar, G. S., Pieber, B., Reddy, K. R., & Kappe, C. O. (2012). Copper-catalyzed
formation of C-O bonds by direct α-C-H bond activation of ethers using stoichiometric
amounts of peroxide in batch and continuous-flow formats. Chemistry - A European
Journal. Wiley. https://doi.org/10.1002/chem.201200815
chicago: Kumar, G. Sathish, Bartholomäus Pieber, K. Rajender Reddy, and C. Oliver
Kappe. “Copper-Catalyzed Formation of C-O Bonds by Direct α-C-H Bond Activation
of Ethers Using Stoichiometric Amounts of Peroxide in Batch and Continuous-Flow
Formats.” Chemistry - A European Journal. Wiley, 2012. https://doi.org/10.1002/chem.201200815.
ieee: G. S. Kumar, B. Pieber, K. R. Reddy, and C. O. Kappe, “Copper-catalyzed formation
of C-O bonds by direct α-C-H bond activation of ethers using stoichiometric amounts
of peroxide in batch and continuous-flow formats,” Chemistry - A European Journal,
vol. 18, no. 20. Wiley, pp. 6124–6128, 2012.
ista: Kumar GS, Pieber B, Reddy KR, Kappe CO. 2012. Copper-catalyzed formation of
C-O bonds by direct α-C-H bond activation of ethers using stoichiometric amounts
of peroxide in batch and continuous-flow formats. Chemistry - A European Journal.
18(20), 6124–6128.
mla: Kumar, G. Sathish, et al. “Copper-Catalyzed Formation of C-O Bonds by Direct
α-C-H Bond Activation of Ethers Using Stoichiometric Amounts of Peroxide in Batch
and Continuous-Flow Formats.” Chemistry - A European Journal, vol. 18,
no. 20, Wiley, 2012, pp. 6124–28, doi:10.1002/chem.201200815.
short: G.S. Kumar, B. Pieber, K.R. Reddy, C.O. Kappe, Chemistry - A European Journal
18 (2012) 6124–6128.
date_created: 2022-08-24T12:33:05Z
date_published: 2012-05-14T00:00:00Z
date_updated: 2023-02-21T10:09:33Z
day: '14'
doi: 10.1002/chem.201200815
extern: '1'
external_id:
pmid:
- '22492535'
intvolume: ' 18'
issue: '20'
language:
- iso: eng
month: '05'
oa_version: None
page: 6124-6128
pmid: 1
publication: Chemistry - A European Journal
publication_identifier:
eissn:
- 1521-3765
issn:
- 0947-6539
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Copper-catalyzed formation of C-O bonds by direct α-C-H bond activation of
ethers using stoichiometric amounts of peroxide in batch and continuous-flow formats
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 18
year: '2012'
...
---
_id: '12644'
abstract:
- lang: eng
text: In the Dry Andes of central Chile, summer water resources originate mostly
from snowmelt and ice melt. We use the physically based, spatially distributed
hydrological model TOPKAPI to study the exchange between glaciers and climate
in the upper Aconcagua River Basin during the summer season and identify the model
parameters that are robust and transferable and those that are more dependent
on calibration. TOPKAPI has recently been adapted to incorporate an enhanced temperature
index approach for snow and ice melting. We suggest a calibration procedure that
allows calibration of parameters in three steps by separating parameters governing
distinct processes. We evaluate the parameters' transferability in time and in
space by applying the model at two spatial scales. TOPKAPI's ability to simulate
the relevant processes is tested against meteorological, ablation, and glacier
runoff data measured on Juncal Norte Glacier during two glacier ablation seasons.
The model was applied successfully to the climatic setting of the Dry Andes once
its parameters were recalibrated. We found a clear distinction between parameters
that are stable in time and those that need recalibration. The parameters of the
melt model are transferable from one season to the other, while the parameters
governing the extrapolation of meteorological input data and the routing of glacier
meltwater need recalibration from one season to the other. Sensitivity analysis
revealed that the model is most sensitive to the temperature lapse rate governing
the extrapolation of air temperature from point measurements to the glacier scale
and to the melt parameter that multiplies the shortwave radiation balance.
article_number: W03509
article_processing_charge: No
article_type: original
author:
- first_name: S.
full_name: Ragettli, S.
last_name: Ragettli
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
citation:
ama: 'Ragettli S, Pellicciotti F. Calibration of a physically based, spatially distributed
hydrological model in a glacierized basin: On the use of knowledge from glaciometeorological
processes to constrain model parameters. Water Resources Research. 2012;48(3).
doi:10.1029/2011wr010559'
apa: 'Ragettli, S., & Pellicciotti, F. (2012). Calibration of a physically based,
spatially distributed hydrological model in a glacierized basin: On the use of
knowledge from glaciometeorological processes to constrain model parameters. Water
Resources Research. American Geophysical Union. https://doi.org/10.1029/2011wr010559'
chicago: 'Ragettli, S., and Francesca Pellicciotti. “Calibration of a Physically
Based, Spatially Distributed Hydrological Model in a Glacierized Basin: On the
Use of Knowledge from Glaciometeorological Processes to Constrain Model Parameters.”
Water Resources Research. American Geophysical Union, 2012. https://doi.org/10.1029/2011wr010559.'
ieee: 'S. Ragettli and F. Pellicciotti, “Calibration of a physically based, spatially
distributed hydrological model in a glacierized basin: On the use of knowledge
from glaciometeorological processes to constrain model parameters,” Water Resources
Research, vol. 48, no. 3. American Geophysical Union, 2012.'
ista: 'Ragettli S, Pellicciotti F. 2012. Calibration of a physically based, spatially
distributed hydrological model in a glacierized basin: On the use of knowledge
from glaciometeorological processes to constrain model parameters. Water Resources
Research. 48(3), W03509.'
mla: 'Ragettli, S., and Francesca Pellicciotti. “Calibration of a Physically Based,
Spatially Distributed Hydrological Model in a Glacierized Basin: On the Use of
Knowledge from Glaciometeorological Processes to Constrain Model Parameters.”
Water Resources Research, vol. 48, no. 3, W03509, American Geophysical
Union, 2012, doi:10.1029/2011wr010559.'
short: S. Ragettli, F. Pellicciotti, Water Resources Research 48 (2012).
date_created: 2023-02-20T08:17:39Z
date_published: 2012-03-01T00:00:00Z
date_updated: 2023-02-21T09:38:36Z
day: '01'
doi: 10.1029/2011wr010559
extern: '1'
intvolume: ' 48'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1029/2011WR010559
month: '03'
oa: 1
oa_version: Published Version
publication: Water Resources Research
publication_identifier:
issn:
- 0043-1397
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Calibration of a physically based, spatially distributed hydrological model
in a glacierized basin: On the use of knowledge from glaciometeorological processes
to constrain model parameters'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 48
year: '2012'
...