Results 1 to 10 of about 81,829 (309)
Computing approximate PSD factorizations [PDF]
CoRR, 2016 10 ...
Amitabh Basu +2 more
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On approximations of the PSD cone by a polynomial number of smaller-sized PSD cones
Mathematical Programming, 2022 We study the problem of approximating the cone of positive semidefinite (PSD) matrices with a cone that can be described by smaller-sized PSD constraints. Specifically, we ask the question: "how closely can we approximate the set of unit-trace $n \times n$ PSD matrices, denoted by $D$, using at most $N$ number of $k \times k$ PSD constraints?" In this ...
Dogyoon Song, Pablo A. Parrilo
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Acta Technica Jaurinensis, 2021 Courier express parcel (CEP) shipments become one of the most important delivery methods in the Business-to-Consumer sales model. This paper observed and analyzed the vertical vibration levels that occur in stacked and unsecured parcels during express ...
Zsófia Németh +3 more
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Dual Regulation of Phosphatidylserine Decarboxylase Expression by Envelope Stress Responses
Frontiers in Molecular Biosciences, 2021 Bacteria adapt to versatile environments by modulating gene expression through a set of stress response regulators, alternative Sigma factors, or two-component systems.
Yasmine Hassoun +4 more
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Discrimination of Aluminum from Silicon by Electron Crystallography with the JUNGFRAU Detector
Crystals, 2020 The crystal structure of a chemical compound serves several purposes: its coordinates represent three-dimensional information about the connectivity between the atoms; it is the only technique that determines the absolute configuration of chiral ...
Erik Fröjdh +7 more
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Potato agriculture research Station Batakundi, naran, a hot spot for cyst nematode (Globodera spp.) of potato in Pakistan [PDF]
BIO Web of ConferencesIn Pakistan, potato summer crop in being cultivated in different agro-ecologies of Khyberpukhtun Khwa and in valleys of Gilgit Baltistan provinces. To understand the current biotic stresses scenario in the potato germplasm developed by National Institute
Faseeh Muhammad +3 more
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FCC catalyst attrition behavior at high temperatures [PDF]
Journal of Particle Science and Technology, 2019 In this work, high temperature attrition was studied in a standard attrition set-up to mimic the FCC regenerator environment with mechanical attrition. Operating conditions were modified in this pilot due to the application of high temperatures.
Saba Foroutan Ghazvini +2 more
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Research progress of organic scintillators for neutron detection
He jishu, 2023 During the neutron detection process, owing to the effects of inelastic scattering and slow neutron capture, a neutron-gamma mixed radiation field is formed, which increases the complexity of neutron detection.
HU Wanping +3 more
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Development of Track Geometrical Evaluation index using Power Spectral Density Method [PDF]
International Journal of Railway Research, 2020 In order to reach a desired quality in railway tracks and to maintain this quality in an acceptable level, a systematic and regular maintenance plan must be performed.
Jabbar Ali Zakeri +2 more
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Neuropsychiatric Disease and Treatment, 2022 Menghan Li,1,2,* Ran Ding,3,* Xinming Yang,1,2 Dawei Ran1,2 1Acupuncture-Moxibustion Clinical Department, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine ...
Li M, Ding R, Yang X, Ran D
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