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Your search keyword '"P. Asplund"' showing total 11 results
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11 results on '"P. Asplund"'

1. Persistence of unknottedness of clean Lagrangian intersections

Author

Asplund, Johan and Li, Yin

Subjects
Mathematics - Symplectic Geometry, Mathematics - Algebraic Geometry, 53D12, 53D37, 57R58
Abstract

Let $Q_0$ and $Q_1$ be two Lagrangian spheres in a $6$-dimensional symplectic manifold. Assume that $Q_0$ and $Q_1$ intersect cleanly along a circle that is unknotted in both $Q_0$ and $Q_1$. We prove that there is no nearby Hamiltonian isotopy of $Q_0$ and $Q_1$ to a pair of Lagrangian spheres meeting cleanly along a circle that is knotted in either component. The proof is based on a classification for spherical Lagrangians in a Stein neighborhood of the union $Q_0\cup Q_1$ and the deep result that lens space rational Dehn surgeries characterizes the unknot., Comment: 46 pages, 18 figures. Comments welcome

Published
2025

2. From Balance to Breach: Cyber Threats to Battery Energy Storage Systems

Author

Öhrström, Frans, Oscarsson, Joakim, Afzal, Zeeshan, Dani, János, and Asplund, Mikael

Subjects
Computer Science - Cryptography and Security
Abstract

Battery energy storage systems are an important part of modern power systems as a solution to maintain grid balance. However, such systems are often remotely managed using cloud-based control systems. This exposes them to cyberattacks that could result in catastrophic consequences for the electrical grid and the connected infrastructure. This paper takes a step towards advancing understanding of these systems and investigates the effects of cyberattacks targeting them. We propose a reference model for an electrical grid cloud-controlled load-balancing system connected to remote battery energy storage systems. The reference model is evaluated from a cybersecurity perspective by implementing and simulating various cyberattacks. The results reveal the system's attack surface and demonstrate the impact of cyberattacks that can criticaly threaten the security and stability of the electrical grid., Comment: Submitted to Energy Informatics on January 9th 2025

Published
2025

7. Harvesting history affects soil respiration and litterfall but not overall carbon balance in boreal Norway spruce forests.

Author

Madsen, Rieke L., Asplund, Johan, Nybakken, Line, Biong, Rebecca, and Kjønaas, O. Janne

Subjects
SOIL respiration, GROUND vegetation cover, FOREST management, SOIL topography, TAIGAS
Abstract

Understanding long-term effects of clear-cutting on current soil carbon (C) fluxes in boreal forests is important in the perspective of global C cycling and future forest management decisions. We studied twelve pairs of forest stands in South-Eastern Norway, each comprised of one previously clear-cut stand and one near-natural stand with similar macroclimate, topography and soil properties. We measured aboveground tree litterfall continuously during two consecutive years and soil respiration fluxes monthly during the snow-free period of one year. Ground vegetation litterfall was estimated from destructive biomass sampling. The previously clear-cut stands had on average 12 % higher annual soil respiration rates, 20 % greater tree litterfall, and tended to have greater total aboveground litterfall (12 %), while the near-natural stands had greater litterfall from ground vegetation (45 %). Litterfall from ground vegetation was strongly linked with below-canopy light transmission, but the contribution of this flux to the total aboveground litterfall was minor. Soil respiration rates were related to microclimate, nitrogen concentration in aboveground tree litter and tree basal area. Though, only basal area could be linked to management type differences in soil respiration, that likely has additional unidentified drivers. We found similar temperature sensitivities of soil respiration in the two management types. We emphasise that age of the dominating trees is an integrated part of the differences between these two types of forest stands. Jointly, our results suggest limited differences in the current net soil C balance of near-natural and previously clear-cut stands. • We compared twelve pairs of near-natural and previously clear-cut stands. • Previously clear-cut stands had greater tree litterfall and soil respiration rates. • Differences in soil respiration rates were partly linked to overstory dynamics. • Near-natural stands had greater litterfall from ground vegetation. • Management history did not affect overall soil carbon balance. [ABSTRACT FROM AUTHOR]

Published
2025
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9. How Endeavor Health uses grants to build strategic inroads: $8.8 million it's giving to local organizations this year is expected to go a long way in establishing community connections.

Author

Asplund, Jon

Subjects
EMPLOYEE recruitment, HOUSING stability, COMMUNITY-based programs, MENTAL health education, EMPLOYEE retention
Abstract

Endeavor Health is providing $8.8 million in grants to 44 organizations in 2025 to establish community connections in the Naperville to Highland Park area. The Community Investment Funds have invested over $30 million in community organizations, creating jobs and impacting lives. The program focuses on areas like housing insecurity, food insecurity, behavioral health, and workforce development to improve overall health outcomes. The strategic investment aims to address social determinants of health and build capacity within partner organizations for long-term impact. [Extracted from the article]

Published
2025

10. If Walgreens goes private, these assets may be cut: The struggling pharmacy chain has already provided some clues to which parts of the business a new owner may want off the books.

Author

Davis, Katherine and Asplund, Jon

Subjects
INDUSTRIAL management, SPECIALTY pharmacies, MEDICAL care, STORE location, MERGERS & acquisitions, DRUGSTORES
Abstract

A New York private-equity firm may acquire Walgreens Boots Alliance and potentially sell off struggling or unprofitable assets to improve returns. The company's U.S. retail pharmacy segment generates the majority of its revenue, with a focus on prescription drug sales. Potential assets that could be cut include the international segment, VillageMD, Summit Health-CityMD, CareCentrix, Shields Specialty Pharmacy, and Cencora. Private-equity owners may choose to offload these assets to raise cash and address financial losses. [Extracted from the article]

Published
2025

11. Why Abbott Labs, Dexcom ended glucose monitor patent fight: After years of back-and-forth litigation, both sides agreed to a 10-year truce. What changed?

Author

Asplund, Jon

Subjects
CONTINUOUS glucose monitoring, BLOOD sugar monitors, TYPE 2 diabetes, EARNINGS announcements, PEOPLE with diabetes, PATENT infringement, PATENT suits
Abstract

Abbott Laboratories and Dexcom have agreed to a 10-year truce, settling all outstanding patent disputes related to their glucose monitoring products. The focus now is on competing in the growing market for continuous glucose monitor technology, which is used by Type 1 diabetics as well as Type 2 diabetics, non-insulin-dependent diabetics, dieters, and athletes. The settlement agreement ensures that the parties will not litigate patent disputes with each other for the next decade, allowing both companies to concentrate on supporting people with diabetes with their technologies and services. [Extracted from the article]

Published
2025

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