Results 71 to 80 of about 25,975 (270)

Poincare Algebra in Chiral QCD_2

, 1996
For the chiral QCD_2 on a cylinder, we give a construction of a quantum theory consistent with anomaly. We construct the algebra of the Poincare generators and show that it differs from the Poincare one.Comment: LATEX file, 10 ...
Carey, Faddeev, Faddeev, Fuad M. Saradzhev, Goddard, Grosse, Halliday, Jackiw, Jackiw, Langmann, Mickelsson, Nelson, Niemi, Paranjape, Rajaraman, Saradzhev, Saradzhev, Saradzhev   +17 more
core   +1 more source

Who Does Bogotá “Care” for? Care Blocks, Care Workers and the Sustainable Development Goals

Sustainable Development, EarlyView.
ABSTRACT This paper critically examines Bogotá's District Care System within the framework of urban social sustainability and the Sustainable Development Goals (SDGs). Focusing on the Care Blocks (Manzanas del Cuidado), it employs a mixed‐methods approach—legal analysis, interviews, testimonies, surveys, and InfoCuidado data—to explore the paradox of a
Valentina Montoya‐Robledo, Berta Fernández‐Gallego   +1 more
wiley   +1 more source

A New Shunt Capacitor-Commutated Converter for Reducing Commutation Failure Probability of HVDC Transmission and Converter Transformer Noise

IEEE Access
The HVDC transmission system with a line-commutated converter is prone to commutation failure when connected to a weak AC grid and has disadvantages such as a large footprint of AC filters and high noise from the converter transformer.
Hao Zhang, Sijia Hu, Longfu Luo, Jinjie Lin, Liang Zhao, Zhiwen Zhang   +5 more
doaj   +1 more source

Micro‐transitions and work identity: The case of academic entrepreneurs

Strategic Entrepreneurship Journal, EarlyView.
Abstract Research Summary This paper examines how academic entrepreneurs—scientists who found research‐based startups while remaining in academia—construct and sustain their professional identities amid frequent transitions between academic and entrepreneurial roles.
Marouane Bousfiha, Henrik Berglund
wiley   +1 more source

Strategy for Suppressing Commutation Failures in High-Voltage Direct Current Inverter Station Based on Transient Overvoltage

Energies
Commutation failures in high-voltage direct current (HVDC) transmission systems often occur within inverter stations, posing challenges to the safe and consistent operation of HVDC transmission projects.
Dandan Zhao, Shaoyin He, Hua Huang, Zheng Han, Lv Cui, Yuxin Li   +5 more
doaj   +1 more source

Local labor market frictions and platform‐based entrepreneurship

Strategic Entrepreneurship Journal, EarlyView.
Abstract Research Summary Building on prior research about the heterogeneous impact of labor shocks on individuals' propensity to start businesses, we explore how local labor market frictions affect individuals' selection into platform‐based entrepreneurship.
Ruiqing Cao, Yifan Lyu
wiley   +1 more source

Review of Research on Voltage Dependent Current Order Limiter for Commutation Failure Mitigation [PDF]

Dianli jianshe
[Objective] The objective of this study is to systematically sort out the research status of the voltage dependent current order limiter（VDCOL）improvement method to enhance the ability of VDCOL control to commutation failure in high-voltage direct ...
ZHU Xuan, TANG Yi, ZHENG Chenyi, WANG Ying, DANG Jie, CUI Ting
doaj   +1 more source

A non-associative quantum mechanics

, 2005
A non-associative quantum mechanics is proposed in which the product of three and more operators can be non-associative one. The multiplication rules of the octonions define the multiplication rules of the corresponding operators with quantum corrections.
A. I. Nesterov, A. I. Nesterov, B. A. Bernevig, B. Grossman, M. Günaydin, P. Jordan, R. Jackiw, T. Kugo, V. Dzhunushaliev, Vladimir Dzhunushaliev   +9 more
core   +2 more sources

Research on Double-Deck Traceability Identification Method of Commutation Failure in HVDC System [PDF]

, 2021
Yuhong Wang, Keqiang Tai, Yuyan Song, Ran Kou, Zongsheng Zheng, Qi Zeng   +5 more
openalex   +1 more source

Homicide, punishment and deterrence in Australia

Southern Economic Journal, EarlyView.
Abstract Australian data encompassing 1910–2022, by year and state, were analyzed to estimate the effect of capital punishment on homicide rates. Our estimates showed that capital punishment had a negative and significant effect on homicides. In some specifications, the estimates implied that an execution was associated with 12.68 fewer homicides ...
Hugh Farrell, Vincent O'Sullivan
wiley   +1 more source