--- _id: '7122' abstract: - lang: eng text: Data-rich applications in machine-learning and control have motivated an intense research on large-scale optimization. Novel algorithms have been proposed and shown to have optimal convergence rates in terms of iteration counts. However, their practical performance is severely degraded by the cost of exchanging high-dimensional gradient vectors between computing nodes. Several gradient compression heuristics have recently been proposed to reduce communications, but few theoretical results exist that quantify how they impact algorithm convergence. This paper establishes and strengthens the convergence guarantees for gradient descent under a family of gradient compression techniques. For convex optimization problems, we derive admissible step sizes and quantify both the number of iterations and the number of bits that need to be exchanged to reach a target accuracy. Finally, we validate the performance of different gradient compression techniques in simulations. The numerical results highlight the properties of different gradient compression algorithms and confirm that fast convergence with limited information exchange is possible. article_number: '8619625' article_processing_charge: No author: - first_name: Sarit full_name: Khirirat, Sarit last_name: Khirirat - first_name: Mikael full_name: Johansson, Mikael last_name: Johansson - first_name: Dan-Adrian full_name: Alistarh, Dan-Adrian id: 4A899BFC-F248-11E8-B48F-1D18A9856A87 last_name: Alistarh orcid: 0000-0003-3650-940X citation: ama: 'Khirirat S, Johansson M, Alistarh D-A. Gradient compression for communication-limited convex optimization. In: 2018 IEEE Conference on Decision and Control. IEEE; 2019. doi:10.1109/cdc.2018.8619625' apa: 'Khirirat, S., Johansson, M., & Alistarh, D.-A. (2019). Gradient compression for communication-limited convex optimization. In 2018 IEEE Conference on Decision and Control. Miami Beach, FL, United States: IEEE. https://doi.org/10.1109/cdc.2018.8619625' chicago: Khirirat, Sarit, Mikael Johansson, and Dan-Adrian Alistarh. “Gradient Compression for Communication-Limited Convex Optimization.” In 2018 IEEE Conference on Decision and Control. IEEE, 2019. https://doi.org/10.1109/cdc.2018.8619625. ieee: S. Khirirat, M. Johansson, and D.-A. Alistarh, “Gradient compression for communication-limited convex optimization,” in 2018 IEEE Conference on Decision and Control, Miami Beach, FL, United States, 2019. ista: 'Khirirat S, Johansson M, Alistarh D-A. 2019. Gradient compression for communication-limited convex optimization. 2018 IEEE Conference on Decision and Control. CDC: Conference on Decision and Control, 8619625.' mla: Khirirat, Sarit, et al. “Gradient Compression for Communication-Limited Convex Optimization.” 2018 IEEE Conference on Decision and Control, 8619625, IEEE, 2019, doi:10.1109/cdc.2018.8619625. short: S. Khirirat, M. Johansson, D.-A. Alistarh, in:, 2018 IEEE Conference on Decision and Control, IEEE, 2019. conference: end_date: 2018-12-19 location: Miami Beach, FL, United States name: 'CDC: Conference on Decision and Control' start_date: 2018-12-17 date_created: 2019-11-26T15:07:49Z date_published: 2019-01-21T00:00:00Z date_updated: 2023-09-06T11:14:55Z day: '21' department: - _id: DaAl doi: 10.1109/cdc.2018.8619625 external_id: isi: - '000458114800023' isi: 1 language: - iso: eng month: '01' oa_version: None publication: 2018 IEEE Conference on Decision and Control publication_identifier: isbn: - '9781538613955' issn: - 0743-1546 publication_status: published publisher: IEEE quality_controlled: '1' scopus_import: '1' status: public title: Gradient compression for communication-limited convex optimization type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2019' ... --- _id: '7146' abstract: - lang: eng text: Prevailing models of sex-chromosome evolution were largely inspired by the stable and highly differentiated XY pairs of model organisms, such as those of mammals and flies. Recent work has uncovered an incredible diversity of sex-determining systems, bringing some of the assumptions of these traditional models into question. One particular question that has arisen is what drives some sex chromosomes to be maintained over millions of years and differentiate fully, while others are replaced by new sex-determining chromosomes before differentiation has occurred. Here, I review recent data on the variability of sex-determining genes and sex chromosomes in different non-model vertebrates and invertebrates, and discuss some theoretical models that have been put forward to account for this diversity. article_processing_charge: No article_type: original author: - first_name: Beatriz full_name: Vicoso, Beatriz id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87 last_name: Vicoso orcid: 0000-0002-4579-8306 citation: ama: Vicoso B. Molecular and evolutionary dynamics of animal sex-chromosome turnover. Nature Ecology & Evolution. 2019;3(12):1632-1641. doi:10.1038/s41559-019-1050-8 apa: Vicoso, B. (2019). Molecular and evolutionary dynamics of animal sex-chromosome turnover. Nature Ecology & Evolution. Springer Nature. https://doi.org/10.1038/s41559-019-1050-8 chicago: Vicoso, Beatriz. “Molecular and Evolutionary Dynamics of Animal Sex-Chromosome Turnover.” Nature Ecology & Evolution. Springer Nature, 2019. https://doi.org/10.1038/s41559-019-1050-8. ieee: B. Vicoso, “Molecular and evolutionary dynamics of animal sex-chromosome turnover,” Nature Ecology & Evolution, vol. 3, no. 12. Springer Nature, pp. 1632–1641, 2019. ista: Vicoso B. 2019. Molecular and evolutionary dynamics of animal sex-chromosome turnover. Nature Ecology & Evolution. 3(12), 1632–1641. mla: Vicoso, Beatriz. “Molecular and Evolutionary Dynamics of Animal Sex-Chromosome Turnover.” Nature Ecology & Evolution, vol. 3, no. 12, Springer Nature, 2019, pp. 1632–41, doi:10.1038/s41559-019-1050-8. short: B. Vicoso, Nature Ecology & Evolution 3 (2019) 1632–1641. date_created: 2019-12-04T16:05:25Z date_published: 2019-11-25T00:00:00Z date_updated: 2023-09-06T11:18:59Z day: '25' department: - _id: BeVi doi: 10.1038/s41559-019-1050-8 ec_funded: 1 external_id: isi: - '000500728800009' intvolume: ' 3' isi: 1 issue: '12' language: - iso: eng month: '11' oa_version: None page: 1632-1641 project: - _id: 250BDE62-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '715257' name: Prevalence and Influence of Sexual Antagonism on Genome Evolution publication: Nature Ecology & Evolution publication_identifier: issn: - 2397-334X publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Molecular and evolutionary dynamics of animal sex-chromosome turnover type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 3 year: '2019' ... --- _id: '7143' abstract: - lang: eng text: Roots grow downwards parallel to the gravity vector, to anchor a plant in soil and acquire water and nutrients, using a gravitropic mechanism dependent on the asymmetric distribution of the phytohormone auxin. Recently, Chang et al. demonstrate that asymmetric distribution of another phytohormone, cytokinin, directs root growth towards higher water content. article_processing_charge: No article_type: original author: - first_name: Scott A full_name: Sinclair, Scott A id: 2D99FE6A-F248-11E8-B48F-1D18A9856A87 last_name: Sinclair orcid: 0000-0002-4566-0593 - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 citation: ama: 'Sinclair SA, Friml J. Defying gravity: a plant’s quest for moisture. Cell Research. 2019;29:965-966. doi:10.1038/s41422-019-0254-4' apa: 'Sinclair, S. A., & Friml, J. (2019). Defying gravity: a plant’s quest for moisture. Cell Research. Springer Nature. https://doi.org/10.1038/s41422-019-0254-4' chicago: 'Sinclair, Scott A, and Jiří Friml. “Defying Gravity: A Plant’s Quest for Moisture.” Cell Research. Springer Nature, 2019. https://doi.org/10.1038/s41422-019-0254-4.' ieee: 'S. A. Sinclair and J. Friml, “Defying gravity: a plant’s quest for moisture,” Cell Research, vol. 29. Springer Nature, pp. 965–966, 2019.' ista: 'Sinclair SA, Friml J. 2019. Defying gravity: a plant’s quest for moisture. Cell Research. 29, 965–966.' mla: 'Sinclair, Scott A., and Jiří Friml. “Defying Gravity: A Plant’s Quest for Moisture.” Cell Research, vol. 29, Springer Nature, 2019, pp. 965–66, doi:10.1038/s41422-019-0254-4.' short: S.A. Sinclair, J. Friml, Cell Research 29 (2019) 965–966. date_created: 2019-12-02T12:30:48Z date_published: 2019-12-01T00:00:00Z date_updated: 2023-09-06T11:20:58Z day: '01' department: - _id: JiFr doi: 10.1038/s41422-019-0254-4 external_id: isi: - '000500749600001' pmid: - '31745287' intvolume: ' 29' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1038/s41422-019-0254-4 month: '12' oa: 1 oa_version: Published Version page: 965-966 pmid: 1 publication: Cell Research publication_identifier: eissn: - 1748-7838 issn: - 1001-0602 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: 'Defying gravity: a plant''s quest for moisture' type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 29 year: '2019' ... --- _id: '7156' abstract: - lang: eng text: We propose an efficient microwave-photonic modulator as a resource for stationary entangled microwave-optical fields and develop the theory for deterministic entanglement generation and quantum state transfer in multi-resonant electro-optic systems. The device is based on a single crystal whispering gallery mode resonator integrated into a 3D-microwave cavity. The specific design relies on a new combination of thin-film technology and conventional machining that is optimized for the lowest dissipation rates in the microwave, optical, and mechanical domains. We extract important device properties from finite-element simulations and predict continuous variable entanglement generation rates on the order of a Mebit/s for optical pump powers of only a few tens of microwatts. We compare the quantum state transfer fidelities of coherent, squeezed, and non-Gaussian cat states for both teleportation and direct conversion protocols under realistic conditions. Combining the unique capabilities of circuit quantum electrodynamics with the resilience of fiber optic communication could facilitate long-distance solid-state qubit networks, new methods for quantum signal synthesis, quantum key distribution, and quantum enhanced detection, as well as more power-efficient classical sensing and modulation. article_number: '108' article_processing_charge: No article_type: original author: - first_name: Alfredo R full_name: Rueda Sanchez, Alfredo R id: 3B82B0F8-F248-11E8-B48F-1D18A9856A87 last_name: Rueda Sanchez orcid: 0000-0001-6249-5860 - first_name: William J full_name: Hease, William J id: 29705398-F248-11E8-B48F-1D18A9856A87 last_name: Hease orcid: 0000-0001-9868-2166 - first_name: Shabir full_name: Barzanjeh, Shabir id: 2D25E1F6-F248-11E8-B48F-1D18A9856A87 last_name: Barzanjeh orcid: 0000-0003-0415-1423 - first_name: Johannes M full_name: Fink, Johannes M id: 4B591CBA-F248-11E8-B48F-1D18A9856A87 last_name: Fink orcid: 0000-0001-8112-028X citation: ama: Rueda Sanchez AR, Hease WJ, Barzanjeh S, Fink JM. Electro-optic entanglement source for microwave to telecom quantum state transfer. npj Quantum Information. 2019;5. doi:10.1038/s41534-019-0220-5 apa: Rueda Sanchez, A. R., Hease, W. J., Barzanjeh, S., & Fink, J. M. (2019). Electro-optic entanglement source for microwave to telecom quantum state transfer. Npj Quantum Information. Springer Nature. https://doi.org/10.1038/s41534-019-0220-5 chicago: Rueda Sanchez, Alfredo R, William J Hease, Shabir Barzanjeh, and Johannes M Fink. “Electro-Optic Entanglement Source for Microwave to Telecom Quantum State Transfer.” Npj Quantum Information. Springer Nature, 2019. https://doi.org/10.1038/s41534-019-0220-5. ieee: A. R. Rueda Sanchez, W. J. Hease, S. Barzanjeh, and J. M. Fink, “Electro-optic entanglement source for microwave to telecom quantum state transfer,” npj Quantum Information, vol. 5. Springer Nature, 2019. ista: Rueda Sanchez AR, Hease WJ, Barzanjeh S, Fink JM. 2019. Electro-optic entanglement source for microwave to telecom quantum state transfer. npj Quantum Information. 5, 108. mla: Rueda Sanchez, Alfredo R., et al. “Electro-Optic Entanglement Source for Microwave to Telecom Quantum State Transfer.” Npj Quantum Information, vol. 5, 108, Springer Nature, 2019, doi:10.1038/s41534-019-0220-5. short: A.R. Rueda Sanchez, W.J. Hease, S. Barzanjeh, J.M. Fink, Npj Quantum Information 5 (2019). date_created: 2019-12-09T08:18:56Z date_published: 2019-12-01T00:00:00Z date_updated: 2023-09-06T11:22:39Z day: '01' ddc: - '530' department: - _id: JoFi doi: 10.1038/s41534-019-0220-5 ec_funded: 1 external_id: arxiv: - '1909.01470' isi: - '000502996200003' file: - access_level: open_access checksum: 13e0ea1d4f9b5f5710780d9473364f58 content_type: application/pdf creator: dernst date_created: 2019-12-09T08:25:06Z date_updated: 2020-07-14T12:47:50Z file_id: '7157' file_name: 2019_NPJ_Rueda.pdf file_size: 1580132 relation: main_file file_date_updated: 2020-07-14T12:47:50Z has_accepted_license: '1' intvolume: ' 5' isi: 1 language: - iso: eng month: '12' oa: 1 oa_version: Published Version project: - _id: 26336814-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '758053' name: A Fiber Optic Transceiver for Superconducting Qubits - _id: 258047B6-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '707438' name: 'Microwave-to-Optical Quantum Link: Quantum Teleportation and Quantum Illumination with cavity Optomechanics SUPEREOM' - _id: 257EB838-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '732894' name: Hybrid Optomechanical Technologies - _id: 26927A52-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: F07105 name: Integrating superconducting quantum circuits publication: npj Quantum Information publication_identifier: issn: - 2056-6387 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Electro-optic entanglement source for microwave to telecom quantum state transfer tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 5 year: '2019' ... --- _id: '7165' abstract: - lang: eng text: Cell division, movement and differentiation contribute to pattern formation in developing tissues. This is the case in the vertebrate neural tube, in which neurons differentiate in a characteristic pattern from a highly dynamic proliferating pseudostratified epithelium. To investigate how progenitor proliferation and differentiation affect cell arrangement and growth of the neural tube, we used experimental measurements to develop a mechanical model of the apical surface of the neuroepithelium that incorporates the effect of interkinetic nuclear movement and spatially varying rates of neuronal differentiation. Simulations predict that tissue growth and the shape of lineage-related clones of cells differ with the rate of differentiation. Growth is isotropic in regions of high differentiation, but dorsoventrally biased in regions of low differentiation. This is consistent with experimental observations. The absence of directional signalling in the simulations indicates that global mechanical constraints are sufficient to explain the observed differences in anisotropy. This provides insight into how the tissue growth rate affects cell dynamics and growth anisotropy and opens up possibilities to study the coupling between mechanics, pattern formation and growth in the neural tube. article_number: dev176297 article_processing_charge: No article_type: original author: - first_name: Pilar full_name: Guerrero, Pilar last_name: Guerrero - first_name: Ruben full_name: Perez-Carrasco, Ruben last_name: Perez-Carrasco - first_name: Marcin P full_name: Zagórski, Marcin P id: 343DA0DC-F248-11E8-B48F-1D18A9856A87 last_name: Zagórski orcid: 0000-0001-7896-7762 - first_name: David full_name: Page, David last_name: Page - first_name: Anna full_name: Kicheva, Anna id: 3959A2A0-F248-11E8-B48F-1D18A9856A87 last_name: Kicheva orcid: 0000-0003-4509-4998 - first_name: James full_name: Briscoe, James last_name: Briscoe - first_name: Karen M. full_name: Page, Karen M. last_name: Page citation: ama: Guerrero P, Perez-Carrasco R, Zagórski MP, et al. Neuronal differentiation influences progenitor arrangement in the vertebrate neuroepithelium. Development. 2019;146(23). doi:10.1242/dev.176297 apa: Guerrero, P., Perez-Carrasco, R., Zagórski, M. P., Page, D., Kicheva, A., Briscoe, J., & Page, K. M. (2019). Neuronal differentiation influences progenitor arrangement in the vertebrate neuroepithelium. Development. The Company of Biologists. https://doi.org/10.1242/dev.176297 chicago: Guerrero, Pilar, Ruben Perez-Carrasco, Marcin P Zagórski, David Page, Anna Kicheva, James Briscoe, and Karen M. Page. “Neuronal Differentiation Influences Progenitor Arrangement in the Vertebrate Neuroepithelium.” Development. The Company of Biologists, 2019. https://doi.org/10.1242/dev.176297. ieee: P. Guerrero et al., “Neuronal differentiation influences progenitor arrangement in the vertebrate neuroepithelium,” Development, vol. 146, no. 23. The Company of Biologists, 2019. ista: Guerrero P, Perez-Carrasco R, Zagórski MP, Page D, Kicheva A, Briscoe J, Page KM. 2019. Neuronal differentiation influences progenitor arrangement in the vertebrate neuroepithelium. Development. 146(23), dev176297. mla: Guerrero, Pilar, et al. “Neuronal Differentiation Influences Progenitor Arrangement in the Vertebrate Neuroepithelium.” Development, vol. 146, no. 23, dev176297, The Company of Biologists, 2019, doi:10.1242/dev.176297. short: P. Guerrero, R. Perez-Carrasco, M.P. Zagórski, D. Page, A. Kicheva, J. Briscoe, K.M. Page, Development 146 (2019). date_created: 2019-12-10T14:39:50Z date_published: 2019-12-04T00:00:00Z date_updated: 2023-09-06T11:26:36Z day: '04' ddc: - '570' department: - _id: AnKi doi: 10.1242/dev.176297 ec_funded: 1 external_id: isi: - '000507575700004' pmid: - '31784457' file: - access_level: open_access checksum: b6533c37dc8fbd803ffeca216e0a8b8a content_type: application/pdf creator: dernst date_created: 2019-12-13T07:34:06Z date_updated: 2020-07-14T12:47:50Z file_id: '7177' file_name: 2019_Development_Guerrero.pdf file_size: 7797881 relation: main_file file_date_updated: 2020-07-14T12:47:50Z has_accepted_license: '1' intvolume: ' 146' isi: 1 issue: '23' language: - iso: eng month: '12' oa: 1 oa_version: Published Version pmid: 1 project: - _id: B6FC0238-B512-11E9-945C-1524E6697425 call_identifier: H2020 grant_number: '680037' name: Coordination of Patterning And Growth In the Spinal Cord publication: Development publication_identifier: eissn: - 1477-9129 issn: - 0950-1991 publication_status: published publisher: The Company of Biologists quality_controlled: '1' scopus_import: '1' status: public title: Neuronal differentiation influences progenitor arrangement in the vertebrate neuroepithelium tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 146 year: '2019' ...