Skip to Content

49 Results Found

  • Article
  • Open Access
1 Citations
4,644 Views
11 Pages

11 March 2023

Parkinson’s disease is a neurodegenerative disease that often comes with symptoms such as muscle stiffness, slowness of movement, and tremors at rest. Since this disease negatively influences the quality of life in patients, an early and accura...

  • Article
  • Open Access
22 Citations
10,300 Views
15 Pages

Screening of Parkinson’s Disease Using Geometric Features Extracted from Spiral Drawings

  • Jay Chandra,
  • Siva Muthupalaniappan,
  • Zisheng Shang,
  • Richard Deng,
  • Raymond Lin,
  • Irina Tolkova,
  • Dignity Butts,
  • Daniel Sul,
  • Sammer Marzouk and
  • Daniel Z. Press
  • + 4 authors

29 September 2021

Conventional means of Parkinson’s Disease (PD) screening rely on qualitative tests typically administered by trained neurologists. Tablet technologies that enable data collection during handwriting and drawing tasks may provide low-cost, portable, an...

  • Article
  • Open Access
7 Citations
4,154 Views
15 Pages

29 August 2021

Essential tremor (ET) is a common movement disorder affecting the performance of various daily tasks, including drawing. While spiral-drawing task characteristics have been described among patients with ET, research about the significance of the draw...

  • Article
  • Open Access
4 Citations
2,615 Views
17 Pages

Architecture-Aware Augmentation: A Hybrid Deep Learning and Machine Learning Approach for Enhanced Parkinson’s Disease Detection

  • Madjda Khedimi,
  • Tao Zhang,
  • Hanine Merzougui,
  • Xin Zhao,
  • Yanzhang Geng,
  • Khamsa Djaroudib and
  • Pascal Lorenz

Parkinson’s Disease (PD) is a progressive neurodegenerative disorder affecting millions worldwide. Early detection is crucial for improving patient outcomes. Spiral drawing analysis has emerged as a non-invasive tool to detect early motor impai...

  • Article
  • Open Access
32 Citations
7,942 Views
15 Pages

Automatic Analysis of Archimedes’ Spiral for Characterization of Genetic Essential Tremor Based on Shannon’s Entropy and Fractal Dimension

  • Karmele Lopez-de-Ipina,
  • Jordi Solé-Casals,
  • Marcos Faúndez-Zanuy,
  • Pilar M. Calvo,
  • Enric Sesa,
  • Josep Roure,
  • Unai Martinez-de-Lizarduy,
  • Blanca Beitia,
  • Elsa Fernández and
  • Alberto Bergareche
  • + 2 authors

16 July 2018

Among neural disorders related to movement, essential tremor has the highest prevalence; in fact, it is twenty times more common than Parkinson’s disease. The drawing of the Archimedes’ spiral is the gold standard test to distinguish betw...

  • Article
  • Open Access
27 Citations
8,902 Views
22 Pages

Selection of Entropy Based Features for Automatic Analysis of Essential Tremor

  • Karmele López-de-Ipiña,
  • Jordi Solé-Casals,
  • Marcos Faundez-Zanuy,
  • Pilar M. Calvo,
  • Enric Sesa,
  • Unai Martinez de Lizarduy,
  • Patricia De La Riva,
  • Jose F. Marti-Masso,
  • Blanca Beitia and
  • Alberto Bergareche

16 May 2016

Biomedical systems produce biosignals that arise from interaction mechanisms. In a general form, those mechanisms occur across multiple scales, both spatial and temporal, and contain linear and non-linear information. In this framework, entropy measu...

  • Article
  • Open Access
19 Citations
5,356 Views
9 Pages

Verification of a Method for Measuring Parkinson’s Disease Related Temporal Irregularity in Spiral Drawings

  • Somayeh Aghanavesi,
  • Mevludin Memedi,
  • Mark Dougherty,
  • Dag Nyholm and
  • Jerker Westin

13 October 2017

Parkinson’s disease (PD) is a progressive movement disorder caused by the death of dopamine-producing cells in the midbrain. There is a need for frequent symptom assessment, since the treatment needs to be individualized as the disease progresses. Th...

  • Article
  • Open Access
1 Citations
3,105 Views
11 Pages

23 November 2021

Essential tremor (ET) is a movement disorder that may cause functional disability in daily activities, such as drinking from a cup or drawing. This study aims to characterize effects of varied cup-grip types and measured axes on the actual performanc...

  • Article
  • Open Access
2 Citations
2,684 Views
9 Pages

Spiral Strip

  • Gregor Skok

29 June 2022

A visual graphic called Spiral Strip is presented consisting of color-coded segments arranged in a spiral. The width and length of each individual segment can be different, which can be used to convey additional information (besides the color coding)...

  • Article
  • Open Access
8 Citations
3,844 Views
13 Pages

Forward osmosis (FO) technology has increasingly attracted attention owing to its low operational energy and low fouling propensity. Despite extensive investigations on FO, very few module-scale FO studies on the operation and design of the FO proces...

  • Feature Paper
  • Article
  • Open Access
113 Citations
9,664 Views
10 Pages

Parkinson’s Disease Detection from Drawing Movements Using Convolutional Neural Networks

  • Manuel Gil-Martín,
  • Juan Manuel Montero and
  • Rubén San-Segundo

Nowadays, an important research effort in healthcare biometrics is finding accurate biomarkers that allow developing medical-decision support tools. These tools help to detect and supervise illnesses like Parkinson’s disease (PD). This paper co...

  • Article
  • Open Access
60 Citations
10,015 Views
18 Pages

Automatic Spiral Analysis for Objective Assessment of Motor Symptoms in Parkinson’s Disease

  • Mevludin Memedi,
  • Aleksander Sadikov,
  • Vida Groznik,
  • Jure Žabkar,
  • Martin Možina,
  • Filip Bergquist,
  • Anders Johansson,
  • Dietrich Haubenberger and
  • Dag Nyholm

17 September 2015

A challenge for the clinical management of advanced Parkinson’s disease (PD) patients is the emergence of fluctuations in motor performance, which represents a significant source of disability during activities of daily living of the patients. There...

  • Article
  • Open Access
2,305 Views
16 Pages

In this work, reverse osmosis and forward osmosis membranes were prepared using base cellulosic polymers with ZrO2. The prepared membranes were rolled on the spiral-wound configuration module. The modules were tested on a pilot unit to investigate th...

  • Article
  • Open Access
10 Citations
2,899 Views
19 Pages

Early Detection of Parkinson’s Disease Using AI Techniques and Image Analysis

  • Marilena Ianculescu,
  • Corina Petean,
  • Virginia Sandulescu,
  • Adriana Alexandru and
  • Ana-Mihaela Vasilevschi

21 November 2024

Background: Parkinson’s disease (PD) diagnosis benefits significantly from advancements in artificial intelligence (AI) and image processing techniques. This paper explores various approaches for processing hand-drawn Archimedean spirals in ord...

  • Article
  • Open Access
21 Citations
5,563 Views
17 Pages

30 October 2020

We compared two representative forward osmosis (FO) modules—spiral-wound (SW) and plate-and-frame (PF)—to provide practical information for the selection of FO element for a large-scale FO process. The FO operating performance of commerci...

  • Communication
  • Open Access
2 Citations
3,627 Views
8 Pages

The link between black holes and star formation allows for us to draw a connection between black holes and the places and times when extraterrestrial intelligences (ETIs) had a greater chance of emerging. Within the context of the gap paradigm for bl...

  • Article
  • Open Access
21 Citations
3,905 Views
14 Pages

12 May 2021

A 2D mechanical metamaterial exhibiting perfectly auxetic behavior, i.e., Poisson’s ratio of 1, is proposed in this paper drawing upon inspiration from an Islamic star formed by circumferential arrangement of eight squares, such as the one found at...

  • Feature Paper
  • Article
  • Open Access
21 Citations
4,898 Views
17 Pages

Twisted Silica Microstructured Optical Fiber with Equiangular Spiral Six-Ray Geometry

  • Anton V. Bourdine,
  • Alexey Yu. Barashkin,
  • Vladimir A. Burdin,
  • Michael V. Dashkov,
  • Vladimir V. Demidov,
  • Konstantin V. Dukelskii,
  • Alexander S. Evtushenko,
  • Yaseera Ismail,
  • Alexander V. Khokhlov and
  • Juan Yin
  • + 11 authors

2 May 2021

This work presents fabricated silica microstructured optical fiber with special equiangular spiral six-ray geometry, an outer diameter of 125 µm (that corresponds to conventional commercially available telecommunication optical fibers of ratified ITU...

  • Article
  • Open Access
8 Citations
3,735 Views
11 Pages

The Accuracy of a Screening System for Carpal Tunnel Syndrome Using Hand Drawing

  • Takuro Watanabe,
  • Takafumi Koyama,
  • Eriku Yamada,
  • Akimoto Nimura,
  • Koji Fujita and
  • Yuta Sugiura

27 September 2021

When carpal tunnel syndrome (CTS), an entrapment neuropathy, becomes severe, thumb motion is reduced, which affects manual dexterity, such as causing difficulties in writing; therefore, early detection of CTS by screening is desirable. To develop a s...

  • Article
  • Open Access
17 Citations
6,226 Views
12 Pages

29 August 2016

The present study examines the association between team incivility climate and team members’ perceived support for innovation. To extend findings on the negative effects of incivility (which are low intensity deviant behaviors, such as rudeness) in s...

  • Article
  • Open Access
1,278 Views
26 Pages

22 September 2025

Parkinson’s disease (PD) is a progressive neurodegenerative disorder that impairs motor function, often causing tremors and difficulty with movement control. A promising diagnostic method involves analyzing hand-drawn patterns, such as spirals...

  • Article
  • Open Access
13 Citations
4,404 Views
18 Pages

17 October 2018

Youth experiencing homelessness have seldom had the opportunity to contribute to conversations about policies and practices that impact their day-to-day lives. Brinegar highlighted middle level education research’s contribution to the lack of r...

  • Article
  • Open Access
807 Views
21 Pages

14 May 2025

Whip restraints based on thin-walled structures are widely used for protection against high-energy pipe breaks in nuclear power plants due to their excellent impact resistance. Recently, biomimetic and hierarchical structures have emerged as focal po...

  • Article
  • Open Access
12 Citations
3,629 Views
12 Pages

17 August 2017

We present a case study of a early-type galaxy (ETG) hosting a kinematically distinct core (KDC) formed in a binary high resolution 1:1 spiral galaxy merger simulation. The runtime of the simulation is pushed up to 10 Gyr to follow the compl...

  • Feature Paper
  • Article
  • Open Access
159 Views
26 Pages

Human civilization embodies a rich cultural heritage shaped over long historical periods by numerous ethnic groups, each employing distinctive motifs and patterns in religious spaces, architecture, clothing, utensils, and other artifacts. Such motifs...

  • Article
  • Open Access
4 Citations
9,780 Views
17 Pages

13 November 2018

In our current building design philosophy, structural design is based on static predictions of the loads a building will need to withstand and the services it will need to provide. However, one study found that 60% of all buildings are demolished due...

  • Feature Paper
  • Review
  • Open Access
99 Citations
25,394 Views
29 Pages

Forward Osmosis: A Critical Review

  • Mehrdad Mohammadifakhr,
  • Joris de Grooth,
  • Hendrik D. W. Roesink and
  • Antoine J. B. Kemperman

30 March 2020

The use of forward osmosis (FO) for water purification purposes has gained extensive attention in recent years. In this review, we first discuss the advantages, challenges and various applications of FO, as well as the challenges in selecting the pro...

  • Article
  • Open Access
1,886 Views
26 Pages

11 April 2025

This study explores the application of Eastern philosophy in craft innovation education, identifying opportunities for interdisciplinary learning. Drawing on the I Ching and Laozi’s thought, it examines human needs in craft across three dimensi...

  • Article
  • Open Access
15 Citations
4,543 Views
17 Pages

To achieve sustainable development goals, it is necessary to establish a positive organization so that employees can pay attention to their strengths and talents and engage in more proactive behaviors, such as taking charge behavior. Taking charge be...

  • Article
  • Open Access
8 Citations
5,907 Views
15 Pages

Effect of DS Concentration on the PRO Performance Using a 5-Inch Scale Cellulose Triacetate-Based Hollow Fiber Membrane Module

  • Masahiro Yasukawa,
  • Daisuke Shigefuji,
  • Masafumi Shibuya,
  • Yuki Ikebe,
  • Ryuto Horie and
  • Mitsuru Higa

In this study, pressure-retarded osmosis (PRO) performance of a 5-inch scale cellulose triacetate (CTA)-based hollow fiber (HF) membrane module was evaluated under a wide range of operating conditions (0.0–6.0 MPa of applied pressure, 0.5&ndash...

  • Article
  • Open Access
1 Citations
4,150 Views
17 Pages

20 October 2021

This paper focuses on the spiritual and gendered experiences of dwelling-in-uncertainty in the context of Bengali char lands. Chars are temporary sandbanks in the river that continuously erode and re-emerge as the river changes course, thereby subjec...

  • Article
  • Open Access
1 Citations
2,252 Views
21 Pages

23 August 2024

Drawing on data from 133 Chinese New Energy Vehicle (NEV) policy documents from 2007 to 2023, this study utilizes Dynamic Topic Modelling (DTM), social network analysis and a quantitative model to investigate the evolutionary path of policy themes an...

  • Article
  • Open Access
9 Citations
3,590 Views
22 Pages

28 February 2021

Pressure-retarded osmosis (PRO) has recently received attention because of its ability to generate power via an osmotic pressure gradient between two solutions with different salinities: high- and low-salinity water sources. In this study, PRO perfor...

  • Article
  • Open Access
857 Views
22 Pages

29 October 2025

Patriarchy has long structured Christian life and practice. In many Baptist settings, even formal affirmations of women in leadership leave a gap between stated commitments and women’s lived experience. This study investigates how Baptist congr...

  • Article
  • Open Access
1 Citations
1,972 Views
21 Pages

This article examines how digital media discourse mediated Germany’s secularization between 2020 and 2024. Drawing on a corpus from Der Spiegel, Die Zeit, and other outlets, this study combines text mining, sentiment profiling, and frame analys...

  • Article
  • Open Access
2 Citations
2,245 Views
23 Pages

A Multiphysics Simulation Study of the Thermomechanical Coupling Response of Energy Piles

  • Chang Xu,
  • Yawen Wang,
  • Xiaolin Meng,
  • Qihang Lv,
  • Hui Chen and
  • Qingdong Wu

The global demand for energy is on the rise, accompanied by increasing requirements for low-carbon environmental protection. In recent years, China’s “double carbon action” initiative has brought about new development opportunities...

  • Article
  • Open Access
999 Views
23 Pages

20 November 2025

This study centers on retirement planning achievement, examining its impact mechanism on older adults’ mental health and its boundary conditions. Drawing on self-determination theory (SDT) and conservation of resources (COR) theory, we tested a...

  • Article
  • Open Access
14 Citations
4,584 Views
18 Pages

17 June 2020

This research work primarily focused on investigating the effects of changing rotational speed on the forming temperature and microstructure during incremental sheet metal forming (ISF) of AA-2219-O and AA-2219-T6 sheets. Tool rotational speed was va...

  • Article
  • Open Access
4 Citations
3,436 Views
14 Pages

24 December 2021

The traditional method for seismic earth pressure calculation has certain limitations for retaining structures under complex conditions. For example, when the soil width is small, the results obtained by the traditional method will be much larger. Th...

  • Article
  • Open Access
6 Citations
2,175 Views
45 Pages

Aiming at the problem that the Osprey Optimization Algorithm (OOA) does not have high optimization accuracy and is prone to falling into local optimum, an Improved Osprey Optimization Algorithm Based on a Two-Color Complementary Mechanism for Global...

  • Article
  • Open Access
367 Views
17 Pages

28 January 2026

Essential tremor (ET) negatively affects neuromuscular control and hand function in older adults. Resistance exercise may enhance musculoskeletal and functional capacity, yet its modality-specific effects in ET remain unclear. This study compared the...

  • Article
  • Open Access
1,694 Views
19 Pages

8 May 2024

In the context of Disease X risks, how governments and public health authorities make policy choices in response to potential epidemics has become a topic of increasing concern. The tightness of epidemic prevention policies is related to the effectiv...

  • Review
  • Open Access
11 Citations
5,317 Views
29 Pages

31 August 2023

The availability of sugar has expanded over the past 50 years, due to improved industrial processes and corn subsidies, particularly in the form of sweetened beverages. This correlates with a surge in the prevalence of cardiometabolic disorders, whic...

  • Article
  • Open Access
283 Views
34 Pages

5 February 2026

This study investigates an inlet design for a gravitational vortex turbine (GVT), drawing inspiration from the ancient Nazca puquios. The puquios are ingenious subterranean aqueducts constructed by the Nazca culture (c. 100 BC–800 AD) in southe...

  • Article
  • Open Access
10 Citations
2,387 Views
13 Pages

Towards Parkinson’s Disease Detection Through Analysis of Everyday Handwriting

  • Jeferson David Gallo-Aristizabal,
  • Daniel Escobar-Grisales,
  • Cristian David Ríos-Urrego,
  • Jesús Francisco Vargas-Bonilla,
  • Adolfo M. García and
  • Juan Rafael Orozco-Arroyave

Background: Parkinson’s disease (PD) is the second most prevalent neurodegenerative disorder worldwide. People suffering from PD exhibit motor symptoms that affect the control of upper and lower limb movement. Among daily activities that depend...

  • Article
  • Open Access
1 Citations
798 Views
37 Pages

Due to climate change, the electric vehicle (EV) industry is rapidly growing and drawing researchers interest. Driving conditions like mountainous roads, slick surfaces, and rough terrains illuminate the vehicles inherent nonlinearities. Under such s...

  • Article
  • Open Access
6 Citations
4,353 Views
37 Pages

An Enhanced Hunger Games Search Optimization with Application to Constrained Engineering Optimization Problems

  • Yaoyao Lin,
  • Ali Asghar Heidari,
  • Shuihua Wang,
  • Huiling Chen and
  • Yudong Zhang

20 September 2023

The Hunger Games Search (HGS) is an innovative optimizer that operates without relying on gradients and utilizes a population-based approach. It draws inspiration from the collaborative foraging activities observed in social animals in their natural...