--- _id: '9455' abstract: - lang: eng text: Proteins of the ARGONAUTE family are important in diverse posttranscriptional RNA-mediated gene-silencing systems as well as in transcriptional gene silencing in Drosophila and fission yeast and in programmed DNA elimination in Tetrahymena. We cloned ARGONAUTE4 (AGO4) from a screen for mutants that suppress silencing of the Arabidopsis SUPERMAN(SUP) gene. The ago4-1 mutant reactivated silentSUP alleles and decreased CpNpG and asymmetric DNA methylation as well as histone H3 lysine-9 methylation. In addition,ago4-1 blocked histone and DNA methylation and the accumulation of 25-nucleotide small interfering RNAs (siRNAs) that correspond to the retroelement AtSN1. These results suggest that AGO4 and long siRNAs direct chromatin modifications, including histone methylation and non-CpG DNA methylation. article_processing_charge: No article_type: original author: - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 - first_name: ' Xiaofeng' full_name: Cao, Xiaofeng last_name: Cao - first_name: Steven E. full_name: Jacobsen, Steven E. last_name: Jacobsen citation: ama: Zilberman D, Cao Xiaofeng, Jacobsen SE. ARGONAUTE4 control of locus-specific siRNA accumulation and DNA and histone methylation. Science. 2003;299(5607):716-719. doi:10.1126/science.1079695 apa: Zilberman, D., Cao, Xiaofeng, & Jacobsen, S. E. (2003). ARGONAUTE4 control of locus-specific siRNA accumulation and DNA and histone methylation. Science. American Association for the Advancement of Science. https://doi.org/10.1126/science.1079695 chicago: Zilberman, Daniel, Xiaofeng Cao, and Steven E. Jacobsen. “ARGONAUTE4 Control of Locus-Specific SiRNA Accumulation and DNA and Histone Methylation.” Science. American Association for the Advancement of Science, 2003. https://doi.org/10.1126/science.1079695. ieee: D. Zilberman, Xiaofeng Cao, and S. E. Jacobsen, “ARGONAUTE4 control of locus-specific siRNA accumulation and DNA and histone methylation,” Science, vol. 299, no. 5607. American Association for the Advancement of Science, pp. 716–719, 2003. ista: Zilberman D, Cao Xiaofeng, Jacobsen SE. 2003. ARGONAUTE4 control of locus-specific siRNA accumulation and DNA and histone methylation. Science. 299(5607), 716–719. mla: Zilberman, Daniel, et al. “ARGONAUTE4 Control of Locus-Specific SiRNA Accumulation and DNA and Histone Methylation.” Science, vol. 299, no. 5607, American Association for the Advancement of Science, 2003, pp. 716–19, doi:10.1126/science.1079695. short: D. Zilberman, Xiaofeng Cao, S.E. Jacobsen, Science 299 (2003) 716–719. date_created: 2021-06-04T11:26:26Z date_published: 2003-01-31T00:00:00Z date_updated: 2021-12-14T08:43:30Z day: '31' department: - _id: DaZi doi: 10.1126/science.1079695 extern: '1' external_id: pmid: - '12522258' intvolume: ' 299' issue: '5607' keyword: - Multidisciplinary language: - iso: eng month: '01' oa_version: None page: 716-719 pmid: 1 publication: Science publication_identifier: eissn: - 1095-9203 issn: - 0036-8075 publication_status: published publisher: American Association for the Advancement of Science quality_controlled: '1' scopus_import: '1' status: public title: ARGONAUTE4 control of locus-specific siRNA accumulation and DNA and histone methylation type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 299 year: '2003' ... --- _id: '4628' abstract: - lang: eng text: 'Discounting the future means that the value, today, of a unit payoffis 1 if the payoffo ccurs today, a if it occurs tomorrow, a 2 if it occurs the day after tomorrow, and so on, for some real-valued discount factor 0 < a < 1. Discounting (or inflation) is a key paradigm in economics and has been studied in Markov decision processes as well as game theory. We submit that discounting also has a natural place in systems engineering: for nonterminating systems, a potential bug in the far-away future is less troubling than a potential bug today. We therefore develop a systems theory with discounting. Our theory includes several basic elements: discounted versions of system properties that correspond to the ω-regular properties, fixpoint-based algorithms for checking discounted properties, and a quantitative notion of bisimilarity for capturing the difference between two states with respect to discounted properties. We present the theory in a general form that applies to probabilistic systems as well as multicomponent systems (games), but it readily specializes to classical transition systems. We show that discounting, besides its natural practical appeal, has also several mathematical benefits. First, the resulting theory is robust, in that small perturbations of a system can cause only small changes in the properties of the system. Second, the theory is computational, in that the values of discounted properties, as well as the discounted bisimilarity distance between states, can be computed to any desired degree of precision.' acknowledgement: This research was supported in part by the NSF CAREER award CCR-0132780, the DARPA grant F33615-C-98-3614, the NSF grants CCR-9988172, CCR-0234690 and CCR-0225610, and the ONR grant N00014-02-1-0671. alternative_title: - LNCS article_processing_charge: No author: - first_name: Luca full_name: De Alfaro, Luca last_name: De Alfaro - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Ritankar full_name: Majumdar, Ritankar last_name: Majumdar citation: ama: 'De Alfaro L, Henzinger TA, Majumdar R. Discounting the future in systems theory. In: Proceedings of the 30th International Colloquium on Automata, Languages and Programming. Vol 2719. Springer; 2003:1022-1037. doi:10.1007/3-540-45061-0_79' apa: 'De Alfaro, L., Henzinger, T. A., & Majumdar, R. (2003). Discounting the future in systems theory. In Proceedings of the 30th International Colloquium on Automata, Languages and Programming (Vol. 2719, pp. 1022–1037). Eindhoven, The Netherlands: Springer. https://doi.org/10.1007/3-540-45061-0_79' chicago: De Alfaro, Luca, Thomas A Henzinger, and Ritankar Majumdar. “Discounting the Future in Systems Theory.” In Proceedings of the 30th International Colloquium on Automata, Languages and Programming, 2719:1022–37. Springer, 2003. https://doi.org/10.1007/3-540-45061-0_79. ieee: L. De Alfaro, T. A. Henzinger, and R. Majumdar, “Discounting the future in systems theory,” in Proceedings of the 30th International Colloquium on Automata, Languages and Programming, Eindhoven, The Netherlands, 2003, vol. 2719, pp. 1022–1037. ista: 'De Alfaro L, Henzinger TA, Majumdar R. 2003. Discounting the future in systems theory. Proceedings of the 30th International Colloquium on Automata, Languages and Programming. ICALP: Automata, Languages and Programming, LNCS, vol. 2719, 1022–1037.' mla: De Alfaro, Luca, et al. “Discounting the Future in Systems Theory.” Proceedings of the 30th International Colloquium on Automata, Languages and Programming, vol. 2719, Springer, 2003, pp. 1022–37, doi:10.1007/3-540-45061-0_79. short: L. De Alfaro, T.A. Henzinger, R. Majumdar, in:, Proceedings of the 30th International Colloquium on Automata, Languages and Programming, Springer, 2003, pp. 1022–1037. conference: end_date: 2003-07-04 location: Eindhoven, The Netherlands name: 'ICALP: Automata, Languages and Programming' start_date: 2003-06-30 date_created: 2018-12-11T12:09:50Z date_published: 2003-06-25T00:00:00Z date_updated: 2023-07-26T13:07:31Z day: '25' doi: 10.1007/3-540-45061-0_79 extern: '1' intvolume: ' 2719' language: - iso: eng month: '06' oa_version: None page: 1022 - 1037 publication: Proceedings of the 30th International Colloquium on Automata, Languages and Programming publication_identifier: isbn: - '9783540404934' publication_status: published publisher: Springer publist_id: '77' quality_controlled: '1' scopus_import: '1' status: public title: Discounting the future in systems theory type: conference user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17 volume: 2719 year: '2003' ... --- _id: '13436' abstract: - lang: eng text: Cross-metathesis reactions of α,β-unsaturated sulfones and sulfoxides in the presence of molybdenum and ruthenium pre-catalysts were tested. A selective metahesis reaction was achieved between functionalized terminal olefins and vinyl sulfones by using the ‘second generation’ ruthenium catalysts 1c–h while the highly active Schrock catalyst 1b was found to be functional group incompatible with vinyl sulfones. The cross-metathesis products were isolated in good yields with an excellent (E)-selectivity. Both the molybdenum and ruthenium-based complexes were, however, incompatible with α,β- and β,γ-unsaturated sulfoxides. article_processing_charge: No article_type: original author: - first_name: Anna full_name: Michrowska, Anna last_name: Michrowska - first_name: Michał full_name: Bieniek, Michał last_name: Bieniek - first_name: Mikhail full_name: Kim, Mikhail last_name: Kim - first_name: Rafal full_name: Klajn, Rafal id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b last_name: Klajn - first_name: Karol full_name: Grela, Karol last_name: Grela citation: ama: Michrowska A, Bieniek M, Kim M, Klajn R, Grela K. Cross-metathesis reaction of vinyl sulfones and sulfoxides. Tetrahedron. 2003;59(25):4525-4531. doi:10.1016/s0040-4020(03)00682-3 apa: Michrowska, A., Bieniek, M., Kim, M., Klajn, R., & Grela, K. (2003). Cross-metathesis reaction of vinyl sulfones and sulfoxides. Tetrahedron. Elsevier. https://doi.org/10.1016/s0040-4020(03)00682-3 chicago: Michrowska, Anna, Michał Bieniek, Mikhail Kim, Rafal Klajn, and Karol Grela. “Cross-Metathesis Reaction of Vinyl Sulfones and Sulfoxides.” Tetrahedron. Elsevier, 2003. https://doi.org/10.1016/s0040-4020(03)00682-3. ieee: A. Michrowska, M. Bieniek, M. Kim, R. Klajn, and K. Grela, “Cross-metathesis reaction of vinyl sulfones and sulfoxides,” Tetrahedron, vol. 59, no. 25. Elsevier, pp. 4525–4531, 2003. ista: Michrowska A, Bieniek M, Kim M, Klajn R, Grela K. 2003. Cross-metathesis reaction of vinyl sulfones and sulfoxides. Tetrahedron. 59(25), 4525–4531. mla: Michrowska, Anna, et al. “Cross-Metathesis Reaction of Vinyl Sulfones and Sulfoxides.” Tetrahedron, vol. 59, no. 25, Elsevier, 2003, pp. 4525–31, doi:10.1016/s0040-4020(03)00682-3. short: A. Michrowska, M. Bieniek, M. Kim, R. Klajn, K. Grela, Tetrahedron 59 (2003) 4525–4531. date_created: 2023-08-01T10:39:34Z date_published: 2003-06-16T00:00:00Z date_updated: 2023-08-08T12:44:17Z day: '16' doi: 10.1016/s0040-4020(03)00682-3 extern: '1' intvolume: ' 59' issue: '25' keyword: - Organic Chemistry - Drug Discovery - Biochemistry language: - iso: eng month: '06' oa_version: None page: 4525-4531 publication: Tetrahedron publication_identifier: eissn: - 1464-5416 issn: - 0040-4020 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Cross-metathesis reaction of vinyl sulfones and sulfoxides type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 59 year: '2003' ... --- _id: '4561' abstract: - lang: eng text: 'We present a formalism for specifying component interfaces that expose component requirements on limited resources. The formalism permits an algorithmic check if two or more components, when put together, exceed the available resources. Moreover, the formalism can be used to compute the quantity of resources necessary for satisfying the requirements of a collection of components. The formalism can be instantiated in several ways. For example, several components may draw power from the same source. Then, the formalism supports compatibility checks such as: can two components, when put together, achieve their tasks without ever exceeding the available amount of peak power? or, can they achieve their tasks by using no more than the initially available amount of energy (i.e., power accumulated over time)? The corresponding quantitative questions that our algorithms answer are the following: what is the amount of peak power needed for two components to be put together? what is the corresponding amount of initial energy? To solve these questions, we model interfaces with resource requirements as games with quantitative objectives. The games are played on state spaces where each state is labeled by a number (representing, e.g., power consumption), and a play produces an infinite path of labels. The objective may be, for example, to minimize the largest label that occurs during a play. We illustrate our approach by modeling compatibility questions for the components of robot control software, and of wireless sensor networks.' acknowledgement: This research was supported in part by the DARPA grant F33615-00-C-1693, the MARCO grant 98-DT-660, the ONR grant N00014-02-1-0671, and the NSF grants CCR-0085949, CCR-0132780, CCR-0234690, and CCR-9988172. alternative_title: - LNCS article_processing_charge: No author: - first_name: Arindam full_name: Chakrabarti, Arindam last_name: Chakrabarti - first_name: Luca full_name: De Alfaro, Luca last_name: De Alfaro - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Mariëlle full_name: Stoelinga, Mariëlle last_name: Stoelinga citation: ama: 'Chakrabarti A, De Alfaro L, Henzinger TA, Stoelinga M. Resource interfaces. In: Third International Conference on Embedded Software. Vol 2855. ACM; 2003:117-133. doi:10.1007/978-3-540-45212-6_9' apa: 'Chakrabarti, A., De Alfaro, L., Henzinger, T. A., & Stoelinga, M. (2003). Resource interfaces. In Third International Conference on Embedded Software (Vol. 2855, pp. 117–133). Philadelphia, PA, USA: ACM. https://doi.org/10.1007/978-3-540-45212-6_9' chicago: Chakrabarti, Arindam, Luca De Alfaro, Thomas A Henzinger, and Mariëlle Stoelinga. “Resource Interfaces.” In Third International Conference on Embedded Software, 2855:117–33. ACM, 2003. https://doi.org/10.1007/978-3-540-45212-6_9. ieee: A. Chakrabarti, L. De Alfaro, T. A. Henzinger, and M. Stoelinga, “Resource interfaces,” in Third International Conference on Embedded Software, Philadelphia, PA, USA, 2003, vol. 2855, pp. 117–133. ista: 'Chakrabarti A, De Alfaro L, Henzinger TA, Stoelinga M. 2003. Resource interfaces. Third International Conference on Embedded Software. EMSOFT: Embedded Software , LNCS, vol. 2855, 117–133.' mla: Chakrabarti, Arindam, et al. “Resource Interfaces.” Third International Conference on Embedded Software, vol. 2855, ACM, 2003, pp. 117–33, doi:10.1007/978-3-540-45212-6_9. short: A. Chakrabarti, L. De Alfaro, T.A. Henzinger, M. Stoelinga, in:, Third International Conference on Embedded Software, ACM, 2003, pp. 117–133. conference: end_date: 2003-10-15 location: Philadelphia, PA, USA name: 'EMSOFT: Embedded Software ' start_date: 2003-10-13 date_created: 2018-12-11T12:09:29Z date_published: 2003-09-29T00:00:00Z date_updated: 2024-01-08T10:48:11Z day: '29' doi: 10.1007/978-3-540-45212-6_9 extern: '1' intvolume: ' 2855' language: - iso: eng month: '09' oa_version: None page: 117 - 133 publication: Third International Conference on Embedded Software publication_identifier: isbn: - '9783540202233' publication_status: published publisher: ACM publist_id: '148' quality_controlled: '1' scopus_import: '1' status: public title: Resource interfaces type: conference user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17 volume: 2855 year: '2003' ... --- _id: '4630' abstract: - lang: eng text: We consider concurrent two-person games played in real time, in which the players decide both which action to play, and when to play it. Such timed games differ from untimed games in two essential ways. First, players can take each other by surprise, because actions are played with delays that cannot be anticipated by the opponent. Second, a player should not be able to win the game by preventing time from diverging. We present a model of timed games that preserves the element of surprise and accounts for time divergence in a way that treats both players symmetrically and applies to all ω-regular winning conditions. We prove that the ability to take each other by surprise adds extra power to the players. For the case that the games are specified in the style of timed automata, we provide symbolic algorithms for their solution with respect to all ω-regular winning conditions. We also show that for these timed games, memory strategies are more powerful than memoryless strategies already in the case of reachability objectives. acknowledgement: Supported in part by the AFOSR MURI grant F49620-00-1-0327, the DARPA grant F33615-C-98-3614, the MARCO grant 98-DT-660, -the ONR grant N00014-02-1-0671, the NSF grants CCR-9988172, CCR-0225610, and CCR-0234690, the NSF CAREER award CCR-0132780, and the MIUR grant MEFISTO. alternative_title: - LNCS article_processing_charge: No author: - first_name: Luca full_name: De Alfaro, Luca last_name: De Alfaro - first_name: Marco full_name: Faella, Marco last_name: Faella - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Ritankar full_name: Majumdar, Ritankar last_name: Majumdar - first_name: Mariëlle full_name: Stoelinga, Mariëlle last_name: Stoelinga citation: ama: 'De Alfaro L, Faella M, Henzinger TA, Majumdar R, Stoelinga M. The element of surprise in timed games. In: Proceedings of the 14th International Conference on Concurrency Theory. Vol 2761. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2003:144-158. doi:10.1007/978-3-540-45187-7_9' apa: 'De Alfaro, L., Faella, M., Henzinger, T. A., Majumdar, R., & Stoelinga, M. (2003). The element of surprise in timed games. In Proceedings of the 14th International Conference on Concurrency Theory (Vol. 2761, pp. 144–158). Marseille, France: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.1007/978-3-540-45187-7_9' chicago: De Alfaro, Luca, Marco Faella, Thomas A Henzinger, Ritankar Majumdar, and Mariëlle Stoelinga. “The Element of Surprise in Timed Games.” In Proceedings of the 14th International Conference on Concurrency Theory, 2761:144–58. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2003. https://doi.org/10.1007/978-3-540-45187-7_9. ieee: L. De Alfaro, M. Faella, T. A. Henzinger, R. Majumdar, and M. Stoelinga, “The element of surprise in timed games,” in Proceedings of the 14th International Conference on Concurrency Theory, Marseille, France, 2003, vol. 2761, pp. 144–158. ista: 'De Alfaro L, Faella M, Henzinger TA, Majumdar R, Stoelinga M. 2003. The element of surprise in timed games. Proceedings of the 14th International Conference on Concurrency Theory. CONCUR: Concurrency Theory, LNCS, vol. 2761, 144–158.' mla: De Alfaro, Luca, et al. “The Element of Surprise in Timed Games.” Proceedings of the 14th International Conference on Concurrency Theory, vol. 2761, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2003, pp. 144–58, doi:10.1007/978-3-540-45187-7_9. short: L. De Alfaro, M. Faella, T.A. Henzinger, R. Majumdar, M. Stoelinga, in:, Proceedings of the 14th International Conference on Concurrency Theory, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2003, pp. 144–158. conference: end_date: 2003-09-05 location: Marseille, France name: 'CONCUR: Concurrency Theory' start_date: 2003-09-03 date_created: 2018-12-11T12:09:51Z date_published: 2003-08-21T00:00:00Z date_updated: 2024-01-08T10:05:30Z day: '21' doi: 10.1007/978-3-540-45187-7_9 extern: '1' intvolume: ' 2761' language: - iso: eng month: '08' oa_version: None page: 144 - 158 publication: Proceedings of the 14th International Conference on Concurrency Theory publication_identifier: isbn: - '9783540407539' publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik publist_id: '78' quality_controlled: '1' scopus_import: '1' status: public title: The element of surprise in timed games type: conference user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17 volume: 2761 year: '2003' ...