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2,403 Results Found

  • Article
  • Open Access
69 Citations
6,040 Views
21 Pages

In the paper, the author presents acoustic-based fault diagnosis of a commutator motor (CM). Five states of the commutator motor were considered: healthy commutator motor, commutator motor with broken rotor coil, commutator motor with shorted stator...

  • Feature Paper
  • Article
  • Open Access
58 Citations
5,354 Views
21 Pages

15 December 2018

Most faults can stop a motor, and time is lost in fixing the damaged motor. This is a reason why it is essential to develop fault-detection methods. This paper describes the acoustic-based fault detection of two commutator motors: the commutator moto...

  • Article
  • Open Access
382 Views
38 Pages

Stone and Flat Topologies on the Minimal Prime Spectrum of a Commutator Lattice

  • George Georgescu,
  • Leonard Kwuida and
  • Claudia Mureşan

30 October 2025

In previous work we have studied minimal prime spectra, as well as extensions of universal algebras whose term condition commutator behaves like the modular commutator in the sense that it is commutative and distributive with respect to arbitrary joi...

  • Article
  • Open Access
8 Citations
4,017 Views
9 Pages

Hamilton Equations, Commutator, and Energy Conservation

  • Weng Cho Chew,
  • Aiyin Y. Liu,
  • Carlos Salazar-Lazaro,
  • Dong-Yeop Na and
  • Wei E. I. Sha

9 December 2019

We show that the classical Hamilton equations of motion can be derived from the energy conservation condition. A similar argument is shown to carry to the quantum formulation of Hamiltonian dynamics. Hence, showing a striking similarity between the q...

  • Article
  • Open Access
10 Citations
3,923 Views
19 Pages

30 March 2020

The structure of the commutator subgroup of Sylow 2-subgroups of an alternating group A 2 k is determined. This work continues the previous investigations of me, where minimal generating sets for Sylow 2-subgroups of alternating groups were...

  • Article
  • Open Access
88 Citations
4,052 Views
24 Pages

Increasing the Efficiency of Diagnostics in the Brush-Commutator Assembly of a Direct Current Electric Motor

  • Olga A. Filina,
  • Nikita V. Martyushev,
  • Boris V. Malozyomov,
  • Vadim Sergeevich Tynchenko,
  • Viktor Alekseevich Kukartsev,
  • Kirill Aleksandrovich Bashmur,
  • Pavel P. Pavlov and
  • Tatyana Aleksandrovna Panfilova

19 December 2023

Increasing the productivity and reliability of mining infrastructure facilities is an important task in achieving future goals. Mining dump trucks are an important part of coal mine infrastructure. In this article, to determine the reliability indica...

  • Article
  • Open Access
1 Citations
482 Views
19 Pages

28 October 2025

Let Ω be a homogeneous function of degree zero on Rn, n2, integrable and having mean value zero on the unit sphere Sn1, and let TΩ be the homogeneous convolution singular integral operator with kernel Ω(x)|x|n. By introdu...

  • Article
  • Open Access
5 Citations
3,740 Views
19 Pages

11 July 2022

Analyzing commuting-time satisfaction could help to improve the subjective well-being of society. This study aimed to explore the nonlinear relationship between commuting satisfaction and commuting times in different groups and its influencing factor...

  • Article
  • Open Access
693 Views
15 Pages

23 July 2025

To improve the ability of line-commutated converters (LCCs) to resist commutation failure (CF) when a fault occurs on the AC side, a novel sub-module-based LCC topology actively resistant to CF is proposed in this paper. The control strategy and the...

  • Article
  • Open Access
6 Citations
3,261 Views
18 Pages

This paper identifies the causal effect of commute time on labor supply in urban China and provides implications for the development of active commuting. Labor supply is measured by daily workhours, workdays per week and weekly workhours, and city av...

  • Article
  • Open Access
10 Citations
3,379 Views
17 Pages

Exploring the impacts of perceived neighborhood environment on commuting behavior and travel-related CO2 emissions helps policymakers formulate regional low-carbon transport policies. Most studies have examined the impact of the objective measures of...

  • Article
  • Open Access
2 Citations
3,948 Views
16 Pages

7 December 2017

Universal enveloping commutative Rota–Baxter algebras of pre- and post-commutative algebras are constructed. The pair of varieties (RBλCom, postCom) is proved to be a Poincaré–Birkhoff–Witt-pair (PBW)-pair and the pair (RBCom, preCom) is proven not t...

  • Article
  • Open Access
7 Citations
3,037 Views
20 Pages

13 October 2022

The commutation failure of high voltage direct current (HVDC) systems could lead to unstable operation of the alternating current/direct current (AC/DC) hybrid power grid. The commutation voltage distortion caused by harmonics is a considerable but u...

  • Article
  • Open Access
4 Citations
4,011 Views
17 Pages

With the recent rapid development of cities, the dynamics of urban road-traffic commuting are becoming more and more complex. In this research, we study urban road-traffic commuting dynamics based on clustering analysis and a new proposed urban commu...

  • Article
  • Open Access
11 Citations
5,379 Views
17 Pages

Transportation Equity in China: Does Commuting Time Matter?

  • Xiaoyun Li,
  • Hongsheng Chen,
  • Yu Shi and
  • Feng Shi

23 October 2019

Urban commuting, a facet of transportation equity, is an important factor that shapes social equity. Little is known about how commuting practices shape individuals’ perceptions of social equity. To fill this gap, we conducted a multilevel regr...

  • Article
  • Open Access
7 Citations
3,790 Views
20 Pages

Commuting Pattern Recognition Using a Systematic Cluster Framework

  • Rongrong Hong,
  • Wenming Rao,
  • Dong Zhou,
  • Chengchuan An,
  • Zhenbo Lu and
  • Jingxin Xia

27 February 2020

Identifying commuting patterns for an urban network is important for various traffic applications (e.g., traffic demand management). Some studies, such as the gravity models, urban-system-model, K-means clustering, have provided insights into the inv...

  • Article
  • Open Access
12 Citations
2,986 Views
15 Pages

Research on Vacuum Arc Commutation Characteristics of a Natural-Commutate Hybrid DC Circuit Breaker

  • Dequan Wang,
  • Minfu Liao,
  • Rufan Wang,
  • Tenghui Li,
  • Jun Qiu,
  • Jinjin Li,
  • Xiongying Duan and
  • Jiyan Zou

15 September 2020

Vacuum arc commutation is an important process in natural-commutate hybrid direct current (DC) circuit breaker (NHCB) interruption, as the duration of vacuum arc commutation will directly affect the arcing time and interrupting time of NHCB. In this...

  • Article
  • Open Access
14 Citations
6,752 Views
19 Pages

Commuting and the Motherhood Wage Gap: Evidence from Germany

  • Thomas Skora,
  • Heiko Rüger and
  • Nico Stawarz

15 July 2020

In the present study, we analyze how childbirth-related changes in commuting contribute to the motherhood wage gap, which in turn accounts for a large part of the gender pay gap. Derived from human capital theory and job search theory, we examine var...

  • Article
  • Open Access
8 Citations
6,582 Views
18 Pages

Theory of Planned Behavior to Understand Commuter’s Perception towards Mass Rapid Transit in Dhaka City, Bangladesh

  • Silvia Saleh,
  • Anusree Saha Tithi,
  • Nazmus Sakib,
  • Tonmoy Paul,
  • Nafis Anwari and
  • Shohel Amin

19 July 2023

The Dhaka Metro Rail (DMR) has been constructed as part of the Dhaka Transport Coordination Authority’s 20-year Strategic Transport Plan to reduce traffic congestion in Dhaka, the capital city of Bangladesh. The DMR is the first urban rail tran...

  • Article
  • Open Access
26 Citations
3,697 Views
15 Pages

Commutative Generalized Neutrosophic Ideals in BCK-Algebras

  • Rajab Ali Borzooei,
  • Xiaohong Zhang,
  • Florentin Smarandache and
  • Young Bae Jun

20 August 2018

The concept of a commutative generalized neutrosophic ideal in a B C K -algebra is proposed, and related properties are proved. Characterizations of a commutative generalized neutrosophic ideal are considered. Also, some equivalence relations...

  • Article
  • Open Access
31 Citations
5,614 Views
22 Pages

14 January 2019

Commuting to and from work is one of the most important and regular routines using urban transport, being a major source for an increase in transport-related carbon dioxide (CO2) emissions. In this study, we explore the characteristics of CO2 emissio...

  • Article
  • Open Access
30 Citations
8,195 Views
13 Pages

Commuting, Life-Satisfaction and Internet Addiction

  • Bernd Lachmann,
  • Rayna Sariyska,
  • Christopher Kannen,
  • Maria Stavrou and
  • Christian Montag

The focus of the present work was on the association between commuting (business and private), life satisfaction, stress, and (over-) use of the Internet. Considering that digital devices are omnipresent in buses and trains, no study has yet investig...

  • Article
  • Open Access
26 Citations
5,265 Views
16 Pages

An Improved Commutation Prediction Algorithm to Mitigate Commutation Failure in High Voltage Direct Current

  • Xinnian Li,
  • Fengqi Li,
  • Shuyong Chen,
  • Yanan Li,
  • Qiang Zou,
  • Ziping Wu and
  • Shaobo Lin

25 September 2017

Commutation failure is a common fault for line-commutated converters in the inverter. To reduce the possibility of commutation failure, many prediction algorithms based on alternating current (AC) voltage detection have already been implemented in hi...

  • Article
  • Open Access
5 Citations
3,182 Views
15 Pages

Analysis and Modelling of the Commutation Error

  • Markus Klein and
  • Massimo Germano

31 December 2020

A multiscale dynamic analysis of the commutation error, based on the filtering approach is performed. The similarity multiscale hypothesis proposed by Bardina (1983) and extended by Geurts and Holm (2006) to the commutation error is examined in detai...

  • Article
  • Open Access
17 Citations
4,315 Views
12 Pages

5 March 2019

Since thyristor cannot turn off automatically, line commutated converter based high voltage direct current (LCC-HVDC) will inevitably fail to commutate and therefore auxiliary controls or voltage control devices are needed to improve the commutation...

  • Article
  • Open Access
10 Citations
4,977 Views
17 Pages

School Commuting Mode Shift: A Scenario Analysis for Active School Commuting Using GIS and Online Map API

  • Anqi Liu,
  • Keone Kelobonye,
  • Zhenqi Zhou,
  • Qiuxia Xu,
  • Zhen Xu and
  • Lingyun Han

Active school commuting provides a convenient opportunity to promote physical activity for children, while also reducing car dependence and its associated environmental impacts. School–home distance is a critical factor in school commuting mode choic...

  • Article
  • Open Access
47 Citations
16,100 Views
22 Pages

12 July 2019

In Kenya’s capital city, Nairobi, streets are regularly gridlocked. While it is clear that roads are congested at peak hours, it is not known which commuters are experiencing that congestion or what their commute times actually are. Even less i...

  • Article
  • Open Access
10 Citations
8,227 Views
21 Pages

14 November 2012

Delineation of commuting regions has always been based on statistical units, often municipalities or wards. However, using these units has certain disadvantages as their land areas differ considerably. Much information is lost in the larger spatial b...

  • Article
  • Open Access
619 Views
27 Pages

A Novel Capacitor-Commutated Converter Based on Submodule-Cascaded STATCOM

  • Ming Yan,
  • Songge Huang,
  • Wenbin Yang,
  • Chenyi Tang,
  • Jianan Jiang and
  • Yaolu He

To address the challenge of a conventional line-commutated converter (LCC), unable to operate properly in connection with a very weak AC system, the technology of the capacitor-commutated converter (CCC) was widely utilized in 1990s. The topology of...

  • Article
  • Open Access
3 Citations
5,278 Views
21 Pages

In the aftermath of a devastating earthquake, public transportation is presumed paralyzed and thus unavailable; large numbers of people are expected to experience difficulty in commuting. In recent years, implementation of district continuity plans (...

  • Article
  • Open Access
3 Citations
5,030 Views
17 Pages

The ongoing debate over whether polycentric urban structures reduce commuting times has yielded conflicting conclusions, highlighting the need for empirical findings in diverse urban contexts and analyses that consider a range of influencing factors....

  • Article
  • Open Access
15 Citations
5,749 Views
9 Pages

Mode of Commuting TO and FROM School: A Similar or Different Pattern?

  • Manuel Herrador-Colmenero,
  • Manuel Escabias,
  • Francisco B. Ortega,
  • Noreen C. McDonald and
  • Palma Chillón

16 February 2019

Aims: The aims of this study were: a) to analyse the association between the mode of commuting to go and come back from school and b) to analyse the association between the usual mode of commuting and weekly counts of school trips by mode of commutin...

  • Article
  • Open Access
19 Citations
5,296 Views
24 Pages

24 February 2019

This paper illuminates important causal processes that can explain differences between central, semi-central and suburban workplaces in commuting distances and modes. Its empirical base is qualitative interview material on the considerations and cond...

  • Article
  • Open Access
7 Citations
2,471 Views
15 Pages

Properties of Commuting Graphs over Semidihedral Groups

  • Tao Cheng,
  • Matthias Dehmer,
  • Frank Emmert-Streib,
  • Yongtao Li and
  • Weijun Liu

8 January 2021

This paper considers commuting graphs over the semidihedral group SD8n. We compute their eigenvalues and obtain that these commuting graphs are not hyperenergetic for odd n15 or even n2. We further compute the Laplacian spectrum, the Laplacia...

  • Article
  • Open Access
9 Citations
3,780 Views
11 Pages

Barriers and Determinants of Active Commuting to School in Slovenia

  • Gregor Jurak,
  • Maroje Sorić,
  • Tjaša Ocvirk,
  • Žan Luca Potočnik,
  • Kaja Meh,
  • Saša Đurić,
  • Vedrana Sember and
  • Gregor Starc

14 December 2021

There is a growing body of literature reporting the health benefits of active commuting to school. This study investigated barriers and determinants of active commuting in children in Slovenia living within walking or cycling distance to school, i.e....

  • Article
  • Open Access
14 Citations
8,796 Views
18 Pages

Impacts of Commuting Practices on Social Sustainability and Sustainable Mobility

  • Melina Stein,
  • Luca Nitschke,
  • Laura Trost,
  • Ansgar Dirschauer and
  • Jutta Deffner

8 April 2022

Commuting is an integral part of many people’s everyday life providing a transition between private and working life. It does, however, lead to negative impacts at a personal and social-ecological level (health impacts, lack of time, climate em...

  • Article
  • Open Access
1,329 Views
23 Pages

Is It Necessarily Better for More Commuters to Share a Vehicle?

  • Zhen Wang,
  • Haiyun Chen,
  • Ting Zhu and
  • Jiazhen Huo

19 August 2024

Increasing private car ownership has congested urban roads and made parking more difficult, especially during the morning commute. Carpooling offers a new way to address these problems. This paper studies the dynamic departure patterns for both regul...

  • Article
  • Open Access
1 Citations
1,618 Views
13 Pages

26 August 2023

Until now, it was believed that, unlike real and complex numbers, the construction of a commutative algebra of quaternions or octonions with division over the field of real numbers is impossible in principle. No one questioned the existing theoretica...

  • Article
  • Open Access
4 Citations
3,071 Views
8 Pages

14 June 2019

In this paper, we are concerned with the non-commutativity measure of quantum discord. We first present an explicit expression of the non-commutativity measure of quantum discord in the two-qubit case. Then we compare the geometric quantum discords f...

  • Article
  • Open Access
3 Citations
3,037 Views
16 Pages

Labour Commutation in the Agricultural Sector—An Analysis of Agricultural Workers in Chile

  • Claudio Mancilla,
  • Luz María Ferrada,
  • Sergio Soza-Amigo and
  • Adriano Rovira

9 December 2022

Agricultural activity is a key strategic sector for countries, particularly for food production. One way to strengthen the sector is through the use of technology. However, while integrating new technologies, challenges have emerged in the sector wit...

  • Article
  • Open Access
46 Citations
4,385 Views
9 Pages

Neutrosophic Commutative N -Ideals in BCK-Algebras

  • Seok-Zun Song,
  • Florentin Smarandache and
  • Young Bae Jun

18 October 2017

The notion of a neutrosophic commutative N -ideal in BCK-algebras is introduced, and several properties are investigated. Relations between a neutrosophic N-ideal and a neutrosophic commutative N-ideal are discussed. Characterizations of a neutrosoph...

  • Article
  • Open Access
14 Citations
6,540 Views
24 Pages

2 June 2021

Understanding commuters’ behavior and influencing factors becomes more and more important every day. With the steady increase of the number of commuters, commuter traffic becomes a major bottleneck for many cities. Commuter behavior consequently play...

  • Article
  • Open Access
27 Citations
10,036 Views
10 Pages

This study examines the effect of commuting time on quality of life. We find that the longer the commute time workers use, the lower satisfaction with work and life they have; the long commute also causes health damage, affecting physical health and...

  • Article
  • Open Access
1 Citations
1,084 Views
15 Pages

27 February 2025

We study the thermodynamic properties of a black hole that takes into account the effects of non-commutative geometry. To emphasize the role of new effects, we have chosen a specific modified Schwarzschild black hole inspired by non-commutative geome...

  • Article
  • Open Access
950 Views
16 Pages

18 October 2025

Compact urban land use planning and smart growth are essential strategies for tackling the issues of sustainable urban transportation development. In the context of swift global urbanization, examining the intrinsic relationship between urban spatial...

  • Article
  • Open Access
1 Citations
1,530 Views
9 Pages

𝒩-Structures Applied to Commutative Ideals of BCI-Algebras

  • Ghulam Muhiuddin,
  • Mohamed E. Elnair and
  • Deena Al-Kadi

26 September 2022

The study of symmetry is one of the most important and beautiful themes uniting various areas of contemporary arithmetic. Algebraic structures are useful structures in pure mathematics for learning a geometrical object’s symmetries. In order to...

  • Article
  • Open Access
10 Citations
4,215 Views
16 Pages

Proposed Commutation Method for Performance Improvement of Brushless DC Motor

  • Chang-Sung Jin,
  • Chang-Min Kim,
  • In-Jin Kim and
  • Iksang Jang

22 September 2021

This study focused on the efficiency improvement and acoustic noise reduction of brushless DC (BLDC) motors by reducing current harmonics using a novel BLDC commutation method. To achieve these goals, we designed an improved 150° commutation method f...

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