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467 Results Found

  • Hypothesis
  • Open Access
7 Citations
4,684 Views
11 Pages

9 July 2021

Shadow work continues to witness a significant uptick in the context of mobile shopping. Therefore, we question whether shadow work perceived by mobile shoppers may become a bigger problem, create fatigue for mobile shoppers, and lead them to discont...

(This article belongs to the Special Issue Knowledge Management and Digital Transformation in the Sharing Economy)
  • Article
  • Open Access
934 Views
22 Pages

With the rapid advancement of digital technology, the self-service model has emerged, introducing a new work model known as digital shadow work (DSW). In this model, consumers perform tasks traditionally performed by employees, such as item scanning...

  • Feature Paper
  • Article
  • Open Access
32 Citations
9,824 Views
28 Pages

Quantifying Configuration-Sampling Error in Langevin Simulations of Complex Molecular Systems

  • Josh Fass,
  • David A. Sivak,
  • Gavin E. Crooks,
  • Kyle A. Beauchamp and ,
  • Benedict Leimkuhler and
  • John D. Chodera
  • + 1 author+ 0 author

26 April 2018

While Langevin integrators are popular in the study of equilibrium properties of complex systems, it is challenging to estimate the timestep-induced discretization error: the degree to which the sampled phase-space or configuration-space probability...

(This article belongs to the Special Issue Understanding Molecular Dynamics via Stochastic Processes)
  • Article
  • Open Access
1 Citations
2,932 Views
15 Pages

In the Shadow of the Pandemic: Examining Therapists’ Perceptions of Work-Related Stress in the Late Stages of the COVID-19 Pandemic in Germany

  • Smilla Johann,
  • Megan Evans,
  • Rike Böttcher,
  • Nadine Muller and ,
  • Barbara Buchberger,
  • Charbel El Bcheraoui and
  • Heide Weishaar
  • + 2 authors+ 0 author

26 September 2024

Background/Objectives: The previous literature has identified increased work-related stress among healthcare workers (HCWs) during the COVID-19 pandemic. This study analyzes work-related perceived stress experienced by therapists during the COVID-19...

(This article belongs to the Special Issue Emotional Stress of Healthcare Professionals in Work)
  • Article
  • Open Access
47 Citations
19,142 Views
18 Pages

Anti-Trafficking in the Time of FOSTA/SESTA: Networked Moral Gentrification and Sexual Humanitarian Creep

  • Jennifer Musto,
  • Anne E. Fehrenbacher,
  • Heidi Hoefinger,
  • Nicola Mai and ,
  • P. G. Macioti,
  • Calum Bennachie,
  • Calogero Giametta and
  • Kate D’Adamo
  • + 3 authors+ 0 author

8 February 2021

Globally, sex workers have highlighted the harms that accompany anti-prostitution efforts advanced via anti-trafficking policy, and there is a growing body of social science research that has emerged documenting how anti-trafficking efforts contribut...

(This article belongs to the Special Issue Sociological Perspectives on (Sexual) Humanitarian Governance of Migrant Sex Work)
  • Article
  • Open Access
15 Citations
12,162 Views
26 Pages

The emergence of the COVID-19 pandemic in early 2020 has transformed how individuals work and learn and how they can apply cyber-security requirements in their, mostly remote, environments. This transformation also affected the university student pop...

(This article belongs to the Special Issue Cyber Situational Awareness Techniques and Human Factors)
  • Article
  • Open Access
11 Citations
10,048 Views
26 Pages

25 June 2024

Online platforms shape and facilitate our social, economic, and political activities. Sex workers have long pioneered their use for advertising, providing services, screening clients, collecting payments, and peer-interaction, among other activities....

(This article belongs to the Section Work, Employment and the Labor Market)
  • Review
  • Open Access
9 Citations
41,859 Views
30 Pages

The Clinical Potential of Dimethyltryptamine: Breakthroughs into the Other Side of Mental Illness, Neurodegeneration, and Consciousness

  • Frankie A. Colosimo,
  • Philip Borsellino,
  • Reese I. Krider,
  • Raul E. Marquez and
  • Thomas A. Vida

26 February 2024

The human brain is an extraordinarily complex organ responsible for all aspects of cognition and control. Billions of neurons form connections with thousands of other neurons, resulting in trillions of synapses that create a vast and intricate networ...

(This article belongs to the Special Issue Natural Hallucinogens in Mental Health)
  • Review
  • Open Access
16 Citations
4,848 Views
24 Pages

Untangling Tau: Molecular Insights into Neuroinflammation, Pathophysiology, and Emerging Immunotherapies

  • Ryder Davidson,
  • Reese I. Krider,
  • Philip Borsellino,
  • Keith Noorda and ,
  • George Alhwayek and
  • Thomas A. Vida
  • + 1 author+ 0 author

2 November 2023

Neuroinflammation, a core pathological feature observed in several neurodegenerative diseases, including Alzheimer’s disease (AD), is rapidly gaining attention as a target in understanding the molecular underpinnings of these disorders. Glial c...

(This article belongs to the Special Issue Molecular Mechanism and Regulation in Neuroinflammation)
  • Article
  • Open Access
15 Citations
4,584 Views
16 Pages

A Novel Shadow Removal Method Based upon Color Transfer and Color Tuning in UAV Imaging

  • Gilberto Alvarado-Robles,
  • Francisco J. Solís-Muñoz,
  • Marco A. Garduño-Ramón,
  • Roque A. Osornio-Ríos and
  • Luis A. Morales-Hernández

4 December 2021

Through the increasing use of unmanned aerial vehicles as remote sensing tools, shadows become evident in aerial imaging; this fact, alongside the higher spatial resolution obtained by high-resolution mounted cameras, presents a challenging issue whe...

(This article belongs to the Section Computing and Artificial Intelligence)
  • Article
  • Open Access
28 Views
20 Pages

Plasma Effects on the Shadow of a Rotating Black Hole in Asymptotically Safe Gravity

  • Mou Xu,
  • Haoyue Cong,
  • Lili Guan,
  • Zhengrui Guo and
  • Jianbo Lu

11 November 2026

We investigate the shadow of a rotating black hole in the infrared limit of asymptotically safe gravity (ASG), focusing on how different plasma distributions affect photon propagation and shadow properties. Using the Hamilton–Jacobi formalism,...

(This article belongs to the Special Issue Feature Papers for the “Gravitation” Section: Advances in Gravitational Physics 2026–2027)
  • Article
  • Open Access
3,810 Views
22 Pages

A n-out-of-n Sharing Digital Image Scheme by Using Color Palette

  • Ching-Nung Yang,
  • Qin-Dong Sun,
  • Yan-Xiao Liu and
  • Ci-Ming Wu

A secret image sharing (SIS) scheme inserts a secret message into shadow images in a way that if shadow images are combined in a specific way, the secret image can be recovered. A 2-out-of-2 sharing digital image scheme (SDIS) adopts a color palette...

(This article belongs to the Special Issue Signal Processing and Analysis of Electrical Circuit)
  • Article
  • Open Access
4 Citations
3,387 Views
11 Pages

Throwaway Shadows Using Parallel Encoders Generative Adversarial Network

  • Kamran Javed,
  • Nizam Ud Din,
  • Ghulam Hussain and
  • Tahir Farooq

14 January 2022

Face photographs taken on a bright sunny day or in floodlight contain unnecessary shadows of objects on the face. Most previous works deal with removing shadow from scene images and struggle with doing so for facial images. Faces have a complex seman...

(This article belongs to the Section Computing and Artificial Intelligence)
  • Article
  • Open Access
14 Citations
3,195 Views
25 Pages

19 August 2021

This work is mainly focused on improving the differential evolution algorithm with the utilization of shadowed and general type 2 fuzzy systems to dynamically adapt one of the parameters of the evolutionary method. Previously, we have worked with bot...

(This article belongs to the Section Logic)
  • Article
  • Open Access
2 Citations
8,719 Views
21 Pages

Enhanced Shadow Retargeting with Light-Source Estimation Using Flat Fresnel Lenses

  • Llogari Casas Cambra,
  • Matthias Fauconneau,
  • Maggie Kosek,
  • Kieran Mclister and
  • Kenny Mitchell

Shadow-retargeting maps depict the appearance of real shadows to virtual shadows given corresponding deformation of scene geometry, such that appearance is seamlessly maintained. By performing virtual shadow reconstruction from unoccluded real-shadow...

  • Article
  • Open Access
5 Citations
4,006 Views
18 Pages

In this paper, we analyze the performance of a dual-hop cooperative decode-and-forward (DF) relaying system with beamforming under different adaptive transmission techniques over κ − μ shadowed fading channels. We consider...

(This article belongs to the Special Issue Cooperative Communications for Future Wireless Systems)
  • Article
  • Open Access
18 Citations
3,343 Views
20 Pages

12 February 2020

A ( k , n ) threshold secret image sharing (SIS) method is proposed to divide a secret image into n shadows. The beauty of this scheme is that one can only reconstruct a secret image with k or more than k shadows, but one cannot obtain any in...

(This article belongs to the Special Issue Computing Methods in Steganography and Multimedia Security)
  • Article
  • Open Access
7 Citations
3,686 Views
31 Pages

10 August 2023

Analysis of aerial images provided by satellites enables continuous monitoring and is a central component of many applications, including precision farming. Nonetheless, this analysis is often impeded by the presence of clouds and cloud shadows, whic...

(This article belongs to the Section Atmospheric Remote Sensing)
  • Article
  • Open Access
1 Citations
5,280 Views
21 Pages

11 January 2019

A subtopic of visual secret sharing (VSS) is information hiding-based VSS (IH-VSS), which embeds secret messages into images using an information hiding technique. In the IH-VSS scheme, stego-images are divided into shadows under the guidance and con...

(This article belongs to the Special Issue Emerging Data Hiding Systems in Image Communications)
  • Article
  • Open Access
7 Citations
4,301 Views
23 Pages

21 August 2020

Current automatic shadow compensation methods often suffer because their contrast improvement processes are not self-adaptive and, consequently, the results they produce do not adequately represent the real objects. The study presented in this paper...

(This article belongs to the Special Issue Applications of Remote Sensing and Geospatial Technologies to Earth Observations)
  • Article
  • Open Access
4 Citations
2,298 Views
11 Pages

Changing the Threshold in a Bivariate Polynomial Based Secret Image Sharing Scheme

  • Qindong Sun,
  • Han Cao,
  • Shancang Li,
  • Houbing Song and
  • Yanxiao Liu

24 February 2022

Secret image sharing (SIS) is an important application of the traditional secret sharing scheme, which has become popular in recent years. In an SIS scheme, a confidential image is encrypted into a group of shadows. Any set of shadows that reaches th...

(This article belongs to the Special Issue Frontiers in Mathematical Methods of Secret Sharing and Applied Cryptography)
  • Article
  • Open Access
14 Citations
3,957 Views
13 Pages

8 January 2019

As a popular technology in information security, secret image sharing is a method to guarantee the secret image’s security. Usually, the dealer would decompose the secret image into a series of shadows and then assign them to a number of partic...

(This article belongs to the Special Issue Symmetry in Computing Theory and Application)
  • Article
  • Open Access
12 Citations
6,343 Views
20 Pages

Primary Pupils’ Multimodal Representations in Worksheets—Text Work in Science Education

  • Fredrik Jeppsson,
  • Kristina Danielsson,
  • Ewa Bergh Nestlog and
  • Kok-Sing Tang

18 March 2022

Worksheets are common in science classrooms with an aim to support pupils’ meaning-making, e.g., for guiding them in performing hands-on activities and documenting their experiences of such activities. Yet, there have been few systematic studie...

(This article belongs to the Special Issue Languages and Literacies in Science Education)
  • Article
  • Open Access
17 Citations
3,826 Views
16 Pages

1 November 2022

With the rapid development of deep learning, pavement crack detection has started to shift from traditional manual visual inspection to automated detection; however, automatic detection is still a challenge due to many complex interference conditions...

(This article belongs to the Section Sustainable Transportation)
  • Article
  • Open Access
21 Citations
10,192 Views
23 Pages

Calculation of the Shading Factors for Solar Modules with MATLAB

  • Martín Silva,
  • Justo Jose Roberts and
  • Pedro Osvaldo Prado

3 August 2021

Shadows severely affect the performance of solar photovoltaic (PV) systems. A proper description of this effect is useful for sizing and simulating PV systems when shadows cannot be avoided. Shading factors represent the basis for simulating the effe...

  • Article
  • Open Access
1 Citations
1,215 Views
29 Pages

11 March 2026

In this work, we investigate the shadow properties of the Kerr–Newman–Anti-de Sitter black hole coupled to nonlinear electrodynamics. The shadow is constructed by employing the celestial coordinate approach for an observer located at a fi...

  • Article
  • Open Access
17 Citations
5,527 Views
16 Pages

23 September 2021

This study focuses on the recovery of information from shadowed pixels in RGB or multispectral imagery sensed from unmanned aerial vehicles (UAVs). The proposed technique is based on the concept that a property characterizing a given surface is its s...

(This article belongs to the Special Issue Remote Sensing for Land Cover and Vegetation Mapping)
  • Article
  • Open Access
2 Citations
2,935 Views
17 Pages

A Shadowed Type-2 Fuzzy Approach for Crossover Parameter Adaptation in Differential Evolution

  • Patricia Ochoa,
  • Cinthia Peraza,
  • Oscar Castillo and
  • Zong Woo Geem

31 May 2023

The shadowed type-2 fuzzy systems are used more frequently today as they provide an alternative to classical fuzzy logic. The primary purpose of fuzzy logic is to simulate reasoning in a computer. This work aims to use shadowed type-2 fuzzy systems (...

(This article belongs to the Special Issue Algorithms for PID Controller 2024)
  • Article
  • Open Access
8 Citations
4,701 Views
15 Pages

A Newly Developed Algorithm for Cloud Shadow Detection—TIP Method

  • Viktoria Zekoll,
  • Raquel de los Reyes and
  • Rudolf Richter

18 June 2022

The masking of cloud shadows in optical satellite imagery is an important step in automated processing chains. A new method (the TIP method) for cloud shadow detection in multi-spectral satellite images is presented and compared to current methods. T...

(This article belongs to the Section Atmospheric Remote Sensing)
  • Article
  • Open Access
13 Citations
3,364 Views
14 Pages

Ukraine had had its ups and downs in recent years. It has, for example, dramatically improved its ease of doing business (EOBB), and it has made some progress reducing the relative size and influence of its shadow economy (Shadow). But, the Russian i...

(This article belongs to the Section Business and Entrepreneurship)
  • Article
  • Open Access
1 Citations
816 Views
17 Pages

Accurate assessment of light properties is essential and is measured with photometric and colorimetric standardized methods. However, the spatial characteristic of light—harshness—remains difficult to quantify. Building on the authors&rsq...

(This article belongs to the Section Image and Video Processing)
  • Article
  • Open Access
7 Citations
2,817 Views
11 Pages

4 October 2022

In this article, we present a systematic investigation on a multistep nanosphere lithography technique to uncover its potential in fabricating a wide range of two- and three-dimensional nanostructures. A tilted (polar angle) electron beam shower on a...

(This article belongs to the Section Nanofabrication and Nanomanufacturing)
  • Article
  • Open Access
27 Citations
6,983 Views
19 Pages

23 March 2018

Recent developments in intelligence surveillance camera systems have enabled more research on the detection, tracking, and recognition of humans. Such systems typically use visible light cameras and images, in which shadows make it difficult to detec...

(This article belongs to the Special Issue Sensors Signal Processing and Visual Computing)
  • Article
  • Open Access
1 Citations
5,770 Views
14 Pages

Exploring the Role of ‘Shadowing’ as a Beneficial Preparatory Step for Sensitive Qualitative Research with Children and Young People with Serious Health Conditions

  • Natalie Tyldesley-Marshall,
  • Sheila Greenfield,
  • Susan J. Neilson,
  • Jenny Adamski and ,
  • Sharon Beardsmore,
  • Martin English and
  • Andrew Peet
  • + 2 authors+ 0 author

30 January 2020

This article aims to explore and record the role of shadowing in preparation for a qualitative study involving children and families with sensitive health issues. The researcher was engaged for a study involving qualitative research involving paediat...

(This article belongs to the Special Issue Practical and Ethical Dilemmas in Researching Sensitive Topics with Populations Considered Vulnerable)
  • Article
  • Open Access
3 Citations
1,927 Views
10 Pages

Progressive Reconstruction on Region-Based Secret Image Sharing

  • Yanxiao Liu,
  • Qindong Sun,
  • Zhihai Yang,
  • Yongluan Zhou and ,
  • Weihua Zhao and
  • Dantong Shi
  • + 1 author+ 0 author

(k,n) threshold progressive secret image sharing (PSIS) has become an important issue in recent years. In (k,n) PSIS, a secret image is encrypted into n shadows such that k to n shadows can gradually reconstruct the secret image. Since an image can u...

(This article belongs to the Special Issue Recent Advances and Applications of Network Security and Cryptography)
  • Article
  • Open Access
2 Citations
11,957 Views
11 Pages

20 December 2024

This paper explores two paths that depth psychology, particularly the work of C. G. Jung, offers to the project of decolonizing knowledge. Jung was a complex intellectual pioneer who embodied and projected the limiting colonialist scientific presuppo...

(This article belongs to the Special Issue Undisciplining Religion and Science: Science, Religion and Nature)
  • Article
  • Open Access
116 Citations
16,215 Views
27 Pages

The Impact of Corruption and Shadow Economy on the Economic and Sustainable Development. Do They “Sand the Wheels” or “Grease the Wheels”?

  • Răzvan Hoinaru,
  • Daniel Buda,
  • Sorin Nicolae Borlea,
  • Viorela Ligia Văidean and
  • Monica Violeta Achim

8 January 2020

Having in mind the main debate “grease the wheels” vs. “sand the wheels”, the main objective of this study is to find the way in which corruption and shadow economy influence economic and sustainable development. A large cross...

(This article belongs to the Special Issue Sustainable Business Models and Innovation in the Knowledge Economy/Business Revolution in the Digital Era- Selected Papers from the 13th and 14th International Conference on Business Excellence)
  • Article
  • Open Access
5 Citations
3,328 Views
16 Pages

13 March 2022

The existing slender target detection methods based on optical satellite images are greatly affected by the satellite perspective and the solar perspective. Due to limited data sources, it is difficult to implement a fully data-driven approach. This...

  • Article
  • Open Access
13 Citations
2,877 Views
18 Pages

30 January 2023

This paper presents new voltage-mode shadow filters employing a low-power multiple-input differential difference transconductance amplifier (MI-DDTA). This device provides multiple-input voltage-mode arithmetic operation capability, electronic tuning...

(This article belongs to the Section Electronic Sensors)
  • Article
  • Open Access
124 Citations
15,895 Views
19 Pages

Use of the SAR Shadowing Effect for Deforestation Detection with Sentinel-1 Time Series

  • Alexandre Bouvet,
  • Stéphane Mermoz,
  • Marie Ballère,
  • Thierry Koleck and
  • Thuy Le Toan

8 August 2018

To detect deforestation using Earth Observation (EO) data, widely used methods are based on the detection of temporal changes in the EO measurements within the deforested patches. In this paper, we introduce a new indicator of deforestation obtained...

(This article belongs to the Special Issue Remote Sensing of Forest Cover Change)
  • Article
  • Open Access
1 Citations
6,016 Views
11 Pages

12 August 2024

Mathematician and philosopher Charles Howard Hinton posited a plausible correlation between higher-dimensional spaces, also referred to as ‘hyperspaces’, and the allegorical concept articulated by the Ancient Greek philosopher Plato in hi...

  • Feature Paper
  • Article
  • Open Access
8 Citations
4,760 Views
15 Pages

A Simplified Method to Avoid Shadows at Parabolic-Trough Solar Collectors Facilities

  • Nuria Novas,
  • Aránzazu Fernández-García and
  • Francisco Manzano-Agugliaro

13 February 2020

Renewable energy today is no longer just an affordable alternative, but a requirement for mitigating global environmental problems such as climate change. Among renewable energies, the use of solar energy is one of the most widespread. Concentrating...

(This article belongs to the Special Issue Symmetry in Renewable Energy and Power Systems)
  • Article
  • Open Access
13 Citations
3,799 Views
16 Pages

4 July 2021

When the shale gas reservoir is fractured, stress shadows can cause reorientation of hydraulic fractures and affect the complexity. To reveal the variation of stress shadow with perforation spacing, the numerical model between different perforation s...

(This article belongs to the Special Issue Multifield and Multiscale Coupling of Rocks in Deep Energy Exploitation)
  • Article
  • Open Access
1 Citations
1,422 Views
31 Pages

Dark Markets for Bright Futures? Unveiling the Shadow Economy’s Influence on Economic Development

  • Oana-Ramona Lobonț,
  • Andreea-Florentina Crăciun,
  • Sorana Vătavu,
  • Ana-Cristina Nicolescu and
  • Marian Pompiliu Cristescu

11 December 2025

This paper examines the changes in the level of informal and shadow economy, mapping their evolution within the EU and measuring their implications on economic growth. The study also addresses the issue of conceptual differences in the methodology fo...

(This article belongs to the Section Systems Practice in Social Science)
  • Article
  • Open Access
1,985 Views
21 Pages

1 January 2026

Low clouds significantly impact weather, climate, and multiple environmental and economic sectors such as agriculture, fire risk management, aviation, and renewable energy. Accurate knowledge of cloud base height (CBH) is critical for optimizing crop...

  • Article
  • Open Access
14 Citations
2,726 Views
20 Pages

Shadowed Type-2 Fuzzy Systems for Dynamic Parameter Adaptation in Harmony Search and Differential Evolution for Optimal Design of Fuzzy Controllers

  • Oscar Castillo,
  • Cinthia Peraza,
  • Patricia Ochoa,
  • Leticia Amador-Angulo and ,
  • Patricia Melin,
  • Yongjin Park and
  • Zong Woo Geem
  • + 2 authors+ 0 author

1 October 2021

This article mainly focuses on the utilization of shadowed type-2 fuzzy systems used to achieve the goal of dynamically adapting the parameters of two already known algorithms in the literature: the harmony search and the differential evolution algor...

  • Article
  • Open Access
13 Citations
3,357 Views
19 Pages

24 March 2023

Weather conditions have significant impacts on the solar concentration processes of the heliostat fields in solar tower power plants. The cloud shadow movements may cause varying solar irradiance levels received by each heliostat. Hence, fixed aiming...

(This article belongs to the Section A2: Solar Energy and Photovoltaic Systems)
  • Article
  • Open Access
18 Citations
4,817 Views
19 Pages

6 August 2021

Improving the quality of life in urban areas has become a major concern in the last few decades. With a constantly increasing urban population and in a climate change context, detailed knowledge of the impact of urban elements on the outdoor thermal...

(This article belongs to the Special Issue Outdoor Thermal Comfort in Cities: Assessing and Developing Green, Blue and Grey Solutions for Healthy and Sustainable Urban Future)
  • Article
  • Open Access
20 Citations
13,466 Views
23 Pages

3 April 2019

The purpose of this study is to obtain oil tank volumes from high-resolution satellite imagery to meet the need to measure oil tank volume globally. A preprocessed remote sensing HSV image is used to extract the shadow of the oil tank by Otsu thresho...

(This article belongs to the Special Issue Image Optimization in Remote Sensing)
  • Article
  • Open Access
7 Citations
3,026 Views
14 Pages

15 December 2023

Building solar protection regulations is essential to save energy in hot climates. The protection performance is assessed using a shading factor computation that models the sky irradiance and the geometry of shadow obstructing the surface of interest...

(This article belongs to the Topic Sustainability, Challenges and Opportunities to Optimize Building Performance)

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