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4,682 Results Found

  • Article
  • Open Access
1,233 Views
15 Pages

25 November 2023

Curved glass enables designers to achieve unparalleled innovation in creating modern and undulating shapes for building enclosures. However, the curvature of panes changes the static and especially the dynamic behavior of the panes under loading. Stu...

  • Article
  • Open Access
1 Citations
1,948 Views
14 Pages

The Learning Curve for Pancreaticoduodenectomy: The Experience of a Single Surgeon

  • Cristian Liviu Cioltean,
  • Adrian Bartoș,
  • Lidia Muntean,
  • Sandu Brânzilă,
  • Ioana Iancu,
  • Cristina Pojoga,
  • Caius Breazu and
  • Iancu Cornel

25 April 2024

Background and Aims: Pancreaticoduodenectomy (PD) is a complex and high-skill demanding procedure often associated with significant morbidity and mortality. However, the results have improved over the past two decades. However, there is a paucity of...

  • Article
  • Open Access
17 Citations
4,669 Views
28 Pages

Implementing Radical Innovation in Renewable Energy Experience Curves

  • Paul Kerr,
  • Donald R. Noble,
  • Jonathan Hodges and
  • Henry Jeffrey

21 April 2021

Cost reductions in nascent forms of Renewable Energy Technology (RET) are essential for them to contribute to the energy mix. Policy intervention can facilitate this cost reduction; however, this may require a significant investment from the public s...

  • Article
  • Open Access
14 Citations
3,598 Views
18 Pages

Bayesian Updating of Soil–Water Character Curve Parameters Based on the Monitor Data of a Large-Scale Landslide Model Experiment

  • Chengxin Feng,
  • Bin Tian,
  • Xiaochun Lu,
  • Michael Beer,
  • Matteo Broggi,
  • Sifeng Bi,
  • Bobo Xiong and
  • Teng He

10 August 2020

It is important to determine the soil–water characteristic curve (SWCC) for analyzing landslide seepage under varying hydrodynamic conditions. However, the SWCC exhibits high uncertainty due to the variability inherent in soil. To this end, a B...

  • Article
  • Open Access
13 Citations
4,742 Views
13 Pages

Learning Curve of Transperineal MRI/US Fusion Prostate Biopsy: 4-Year Experience

  • Po-Fan Hsieh,
  • Po-I Li,
  • Wei-Ching Lin,
  • Han Chang,
  • Chao-Hsiang Chang,
  • Hsi-Chin Wu,
  • Yi-Huei Chang,
  • Yu-De Wang,
  • Wen-Chin Huang and
  • Chi-Ping Huang

24 February 2023

This study aimed to evaluate the learning curve of transperineal magnetic resonance imaging (MRI)/ultrasound (US) fusion biopsy in a team composed of a single surgeon, a single radiologist, and a single pathologist. We prospectively enrolled 206 pati...

  • Article
  • Open Access
6 Citations
2,203 Views
16 Pages

Early Learning Curve in Robotic-Assisted Total Knee Arthroplasty: A Single-Center Experience

  • David Putzer,
  • Lennart Schroeder,
  • Georgi Wassilew,
  • Michael Liebensteiner,
  • Michael Nogler and
  • Martin Thaler

28 November 2024

Background/Objectives: This study evaluated the learning curve for robotic-assisted total knee arthroplasty (RA TKA) performed by three experienced surgeons, focusing on procedure duration, surgeon satisfaction, and confidence. Methods: A prospective...

  • Article
  • Open Access
8 Citations
2,358 Views
7 Pages

Robot-Assisted Radical Prostatectomy (RARP) Trifecta Learning Curve for Surgeons with Previous Experience in Laparoscopy

  • Altez-Fernandez Carlos,
  • Vazquez-Martul Dario,
  • Răzvan-Ionut Popescu,
  • Corrales Mariela and
  • Chantada-Abal Venancio

24 June 2024

Background and Objectives: Robot-assisted radical prostatectomy (RARP) is a complex surgery with a steep learning curve (LC). No clear evidence exists for how previous laparoscopic experience affects the RARP LC. We report the LC of three surgeons wi...

  • Article
  • Open Access
3 Citations
1,987 Views
13 Pages

27 April 2025

Background/Objectives: Retroperitoneal lymph node dissection (RPLND) plays a crucial role in the staging and treatment of testicular cancer and is often mandatory. RPLND is associated with a high risk of morbidity. The use of minimally invasive techn...

  • Article
  • Open Access
2,736 Views
26 Pages

Dynamic Electricity Intensity Trends in 91 Countries

  • Hann-Earl Kim,
  • Yu-Sang Chang and
  • Hee-Jin Kim

20 April 2021

Despite numerous studies on energy productivity and efficiency, only a few focus on the electricity intensity (EI) of economic output. As these studies largely examine the declining trend in EI, the increasing and/or fluctuating trends in EI have not...

  • Proceeding Paper
  • Open Access
2,098 Views
8 Pages

The application of curved Insulating Glass Units (IGUs) in facades has emerged as a novel solution to meet aesthetic and energy performance objectives. Due to improved stiffness, curved IGUs cannot equalise internal and atmospheric pressure changes b...

  • Article
  • Open Access
6 Citations
2,000 Views
16 Pages

Modeling and Experimental Investigation of U-R Relationship of AA6061-T6 Tubes Manufactured via Free Bending Forming Process

  • Ali Abd El-Aty,
  • Cheng Cheng,
  • Yong Xu,
  • Yong Hou,
  • Jie Tao,
  • Shenghan Hu,
  • Bandar Alzahrani,
  • Alamry Ali,
  • Mohamed M. Z. Ahmed and
  • Xunzhong Guo

27 November 2023

Forming tubes with various bending radii without changing the bending dies is much easier for the 3D free bending forming (FBF) process. In the 3D-FBF process, different bending radii were realized by adapting the eccentricities of the bending dies....

  • Article
  • Open Access
9 Citations
3,569 Views
17 Pages

Experimental Study and Development of Design Formula for Estimating the Ultimate Strength of Curved Plates

  • Jeong-Hyeon Kim,
  • Doo-Hwan Park,
  • Seul-Kee Kim,
  • Myung-Sung Kim and
  • Jae-Myung Lee

8 March 2021

The curved plate has been extensively used as a structural member in many industrial fields, especially the shipbuilding industry. The present study investigated the ultimate strength and collapse behavior of the simply supported curved plate under a...

  • Article
  • Open Access
6 Citations
2,567 Views
17 Pages

11 December 2023

Technological learning curve models have been continuously used to estimate the cost development of solar photovoltaics (PV) for climate mitigation targets over time. They can integrate several technical sources that influence the learning process. Y...

  • Article
  • Open Access
2 Citations
2,571 Views
17 Pages

Seismic Dynamic Response and Lining Damage Analysis of Curved Tunnel under Shallowly Buried Rock Strata

  • Shijie Bu,
  • Xiaojiu Feng,
  • Luyan Yao,
  • Fujian Yang,
  • Yongtian Xie and
  • Shaofeng Liu

9 March 2023

It is still challenging to anticipate with accuracy how tunnels will behave and if they will fail when subjected to an earthquake load. In this study, assuming nonlinear material behavior and a three-dimensional inelastic rock medium, the theory of d...

  • Article
  • Open Access
2,378 Views
14 Pages

25 February 2024

The soil freezing characteristic curve (SFCC) describes the relationship between the freezing point and unfrozen water content, which are two critical parameters in depicting the heat, solute, and water transport in frozen soil. In this paper, we pro...

  • Article
  • Open Access
9 Citations
3,386 Views
19 Pages

30 November 2018

Steps effectively dissipate the energy of water along a path and reduce the size of the stilling basin but are rarely used in curved spillways. The shore spillway of a reservoir, which is restricted by topography, must be arranged in a curved shape....

  • Article
  • Open Access
6 Citations
3,616 Views
21 Pages

Dynamic Trends of Carbon Intensities among 127 Countries

  • Yu Sang Chang,
  • Dosoung Choi and
  • Hann Earl Kim

7 December 2017

Many countries in the world have been experiencing widely varying rates of change in their carbon intensity (CI) of economic output. The dynamic trend of CI in this research is measured by the progress ratio (PR) from an experience curve (EC) involvi...

  • Article
  • Open Access
3 Citations
3,810 Views
15 Pages

3 September 2020

The application of the CPT (charge-conjugation, parity, and time reversal) theorem to an apple falling on Earth leads to the description of an anti-apple falling on anti–Earth (not on Earth). On the microscopic level, the Dirac equation in curv...

  • Article
  • Open Access
44 Citations
12,460 Views
19 Pages

24 April 2019

We introduce an approach that supports researchers and practitioners to determine the quality of first-time user experience (FTUX) and long-term user experience (LTUX), as well as to identify critical issues with these two types of UX. The product we...

  • Article
  • Open Access
7 Citations
1,863 Views
17 Pages

22 September 2023

The double arc pitch curve is a novel way for creating a non-circular gear tooth profile. Aiming at the problems of the rounding of non-integer teeth and the nonlinear equation system in the construction of double circular arc tooth profile, an activ...

  • Article
  • Open Access
19 Citations
5,912 Views
22 Pages

19 June 2015

In order to evaluate the seismic performance of new-type composite exterior wallboard, a total of six exterior and interior wallboards were incorporated in the experiment of seismic performance. Seismic performance such as the stress process, damage...

  • Article
  • Open Access
2 Citations
2,877 Views
34 Pages

6 April 2020

Despite the fact that fine particulate matter (PM2.5) causes serious health issues, few studies have investigated the level and annual rate of PM2.5 change across a large number of countries. For a better understanding of the global trend of PM2.5, t...

  • Article
  • Open Access
1 Citations
2,633 Views
25 Pages

Conceptual Model of Expansive Rock or Soil Swelling

  • Boris Kavur,
  • Nataša Štambuk Cvitanović,
  • Jasmin Jug and
  • Ivan Vrkljan

The paper presents a simple yet efficient way to track the void ratio, the water content, and the degree of saturation of a swelling material during saturation. The research aimed to quantitatively describe the drying and wetting processes of the swe...

  • Article
  • Open Access
28 Citations
6,305 Views
23 Pages

1 June 2020

The investigation conducted is aimed at establishing the best operational conditions to obtain the best output of a 5-cell stack Proton Exchange Membrane fuel cell (PEMFC) with three different bipolar plate geometries. The work further explores the b...

  • Article
  • Open Access
5 Citations
2,867 Views
12 Pages

Surgical Experience and Functional Outcomes after Laparoscopic and Robot-Assisted Partial Nephrectomy: Results from a Multi-Institutional Collaboration

  • Carlo Andrea Bravi,
  • Paolo Dell’Oglio,
  • Angela Pecoraro,
  • Zine-Eddine Khene,
  • Riccardo Campi,
  • Pietro Diana,
  • Chiara Re,
  • Carlo Giulioni,
  • Alp Tuna Beksac and
  • Alessandro Larcher
  • + 31 authors

9 October 2024

Background: In patients treated with partial nephrectomy, prior evidence showed that peri-operative outcomes, such as complications and ischemia time, improved as a function of the surgical experience of the surgeon, but data on functional outcomes a...

  • Systematic Review
  • Open Access
2 Citations
4,788 Views
14 Pages

The Impact of Surgeon Experience on Surgical Parameters and Complication Rates for the Surgical Management of Adult Spinal Deformities: A Systematic Review and Meta-Analysis

  • Albert T. Anastasio,
  • Anthony N. Baumann,
  • Megan E. Callaghan,
  • Kempland C. Walley,
  • Davin C. Gong,
  • Grayson M. Talaski,
  • Keegan T. Conry,
  • Cole Shafer and
  • Jacob C. Hoffmann

4 June 2024

The surgical management of adult spinal deformities (ASDs) involves a wide variety of complex and technically challenging operative techniques. Despite numerous publications examining the relationship between surgeon experience and outcomes in ASD, n...

  • Article
  • Open Access
2 Citations
2,634 Views
24 Pages

1 June 2023

To improve the autonomous flight capability of endo-atmospheric flight vehicles, such as cruise missiles, drones, and other small, low-cost unmanned aerial vehicles (UAVs), a novel minimum-effort waypoint-following differential geometric guidance law...

  • Article
  • Open Access
3 Citations
4,592 Views
22 Pages

11 January 2019

The relationship between income and environmental concern has only in some samples been found to mirror an Environmental Kuznets curve of pollution behavior by U-shaped preferences. Inconclusive aggregate findings may be due to the differential prese...

  • Article
  • Open Access
20 Citations
5,882 Views
22 Pages

17 July 2018

Many studies which try to analyze conditions for debris flow development ignore the type of initiation. Therefore, this paper deals with the following questions: What type of hydro-mechanical triggering mechanisms for debris flows can we distinguish...

  • Article
  • Open Access
8 Citations
3,056 Views
30 Pages

System Structure–Based Drought Disaster Risk Assessment Using Remote Sensing and Field Experiment Data

  • Yi Cui,
  • Huiyan Tang,
  • Juliang Jin,
  • Yuliang Zhou,
  • Shangming Jiang and
  • Menglu Chen

11 November 2022

With the impacts of climate change and human activities, agricultural drought disaster losses have increased remarkably. Drought disaster risk assessment is a prerequisite for formulating disaster reduction strategies and ensuring food security. Howe...

  • Article
  • Open Access
2,036 Views
12 Pages

The rationale of the present study is that relationships between in vitro biological activity and mass spectrometric (MS) collisional data of molecular species have been already reported in the literature. Herein, the same approach has been employed...

  • Article
  • Open Access
12 Citations
2,299 Views
13 Pages

28 October 2021

To explore the effects of thermal actions on the pore structural features of granite, scanning electron microscope (SEM) and mercury injection experiments were carried out on granite after thermal treatment (25 °C to 400 °C). The pore structure was i...

  • Article
  • Open Access
10 Citations
4,249 Views
27 Pages

Although work events can be regarded as pivotal elements of organizational life, only a few studies have examined how positive and negative events relate to and combine to affect work engagement over time. Theory suggests that, to better understand h...

  • Article
  • Open Access
6 Citations
3,405 Views
15 Pages

Lateral Deflection Behavior of Perforated Steel Plates: Experimental and Numerical Approaches

  • Jeong-Hyeon Kim,
  • Doo-Hwan Park,
  • Seul-Kee Kim,
  • Jeong-Dae Kim and
  • Jae-Myung Lee

This study aimed to investigate the behavioral characteristics of the lateral deflection of a simply supported perforated steel plate subjected to axial compression. Investigating the lateral deflection of the perforated plate is of great significanc...

  • Article
  • Open Access
13 Citations
8,667 Views
17 Pages

26 August 2016

Driving anger, called “road rage”, has become increasingly common nowadays, affecting road safety. A few researches focused on how to identify driving anger, however, there is still a gap in driving anger grading, especially in real traffic environme...

  • Article
  • Open Access
3 Citations
1,662 Views
22 Pages

The Influence of a Key Indicator kv on the Diffusion Range of Underwater Oil Spill

  • Hong Ji,
  • Yaxin Wang,
  • Ting Wang,
  • Ke Yang and
  • Zhixiang Xing

3 August 2023

As oil spills cause harm to the survival and environment of the ocean, the objective of the present paper is to study the oil migration range using the key indicator kv, which is defined as the ratio of oil spill speed to ocean current speed. The cor...

  • Article
  • Open Access
1,030 Views
13 Pages

Experimental Investigation of the Effects of Backwater on the Velocity Distribution Characteristics in a 90-Degree Curved Channel

  • Qihang Zhou,
  • Zhijing Li,
  • Zhongwu Jin,
  • Yisen Wang,
  • Peng Chen,
  • Yujiao Liu and
  • Xuhai Yang

22 June 2025

The impacts of backwater due to large dam construction on flow may lead to navigation or flood control problems in curved rivers. This study conducted flume experiments to investigate the effects of backwater on the velocity distribution characterist...

  • Article
  • Open Access
9 Citations
2,019 Views
13 Pages

Learning Curve Analysis of Robotic-Assisted Mitral Valve Repair with COVID-19 Exogenous Factor: A Single Center Experience

  • Laura Giroletti,
  • Valentina Brembilla,
  • Ascanio Graniero,
  • Giovanni Albano,
  • Nicola Villari,
  • Claudio Roscitano,
  • Matteo Parrinello,
  • Valentina Grazioli,
  • Ettore Lanzarone and
  • Alfonso Agnino

29 August 2023

Background and objective Renewed interest in robot-assisted cardiac procedures has been demonstrated by several studies. However, concerns have been raised about the need for a long and complex learning curve. In addition, the COVID-19 pandemic in 20...

  • Article
  • Open Access
1 Citations
1,056 Views
26 Pages

26 March 2025

To clarify the operational characteristics and driving risks of urban underground road curves, a real vehicle driving experiment involving 20 subjects was conducted at the Jiefangbei Underground Ring Road in Chongqing. High-precision instruments were...

  • Article
  • Open Access
3 Citations
1,808 Views
15 Pages

Design and Experiments of a Convex Curved Surface Type Grain Yield Monitoring System

  • Yijun Fang,
  • Zhijian Chen,
  • Luning Wu,
  • Sheikh Muhammad Farhan,
  • Maile Zhou and
  • Jianjun Yin

Precision agriculture relies heavily on measuring grain production per unit plot, and a grain flow monitoring system performs this using a combine harvester. In response to the high cost, complex structure, and low stability of the yield monitoring s...

  • Article
  • Open Access
8 Citations
1,793 Views
12 Pages

16 August 2023

The pressure–temperature scales in DAC and shock wave (SW) experiments should be corrected by taking into account the thermal pressure shifts. In the present contribution, it is further claimed that first-principle ab initio DFT and MD simulati...

  • Article
  • Open Access
1 Citations
3,616 Views
11 Pages

26 June 2019

The aim of this study was to evaluate the learning curve of robotic thyroid surgery with regard to both operation time and temporary hypoparathyroidism using quantitative statistical analysis. A total of 194 patients who underwent total thyroidectomy...

  • Article
  • Open Access
3 Citations
3,192 Views
26 Pages

Computing Localized Breakthrough Curves and Velocities of Saline Tracer from Ground Penetrating Radar Monitoring Experiments in Fractured Rock

  • Peter-Lasse Giertzuch,
  • Alexis Shakas,
  • Joseph Doetsch,
  • Bernard Brixel,
  • Mohammadreza Jalali and
  • Hansruedi Maurer

19 May 2021

Solute tracer tests are an established method for the characterization of flow and transport processes in fractured rock. Such tests are often monitored with borehole sensors which offer high temporal sampling and signal to noise ratio, but only limi...

  • Article
  • Open Access
5 Citations
2,075 Views
15 Pages

28 June 2024

Relating soil moisture content to soil suction, the soil–water characteristic curve (SWCC) represents an essential feature in unsaturated soil mechanics that enables estimation of different unsaturated soil property functions and modeling of th...

  • Article
  • Open Access
288 Views
30 Pages

Displacement Experiment Characterization and Microscale Analysis of Anisotropic Relative Permeability Curves in Sandstone Reservoirs

  • Yifan He,
  • Yishan Guo,
  • Li Wu,
  • Liangliang Jiang,
  • Shuoliang Wang,
  • Bingpeng Bai and
  • Zhihong Kang

27 December 2025

As a critical parameter for describing oil–water two-phase flow behavior, relative permeability curves are widely applied in field development, dynamic forecasting, and reservoir numerical simulation. This study addresses the issue of relative...

  • Article
  • Open Access
27 Citations
4,381 Views
20 Pages

21 March 2022

The objective of the present research was to study the effect of temperature on the mechanical properties, failure mode and uniaxial compression constitutive relationship of a modified polyurethane concrete. A total of 24 cube and 27 prism specimens...

  • Article
  • Open Access
16 Citations
4,366 Views
16 Pages

Impact of Ten Years Conservation Tillage in Organic Farming on Soil Physical Properties in a Loess Soil—Northern Hesse, Germany

  • Carolina Bilibio,
  • Daniel Uteau,
  • Malte Horvat,
  • Ulla Rosskopf,
  • Stephan Martin Junge,
  • Maria Renate Finckh and
  • Stephan Peth

In conservation agriculture, conservation tillage potentially influences the physical, chemical, and biological quality of the soil. Although the effects of conservation agriculture on the soil’s physical properties have been studied in convent...

  • Article
  • Open Access
8 Citations
2,379 Views
15 Pages

18 January 2023

An experimental study and modeling of the behavior of wood during compression along the fibers was carried out. The nonlinear analytical dependence of the load on the strain was considered. Attention was focused on the post-peak stage of deformation...

  • Article
  • Open Access
4 Citations
4,065 Views
14 Pages

Laboratory Investigations of Mold Growth on Transverse and Longitudinal Wood Surfaces

  • Pavla Ryparová,
  • Pavel Kopecký,
  • Kamil Staněk,
  • Jan Richter and
  • Jan Tywoniak

24 December 2022

The possible influence of anatomical sections of wood on mold growth was investigated by means of a laboratory experiment. The selected fungi, Aspergillus sp., Penicillium sp., and Alternaria sp. were inoculated by spraying on the surface of wood spe...

  • Article
  • Open Access
11 Citations
5,246 Views
17 Pages

Open-Access Experiment Dataset for Fatigue Damage Accumulation and Life Prediction Models

  • Kris Hectors,
  • Dennis Vanspeybrouck,
  • Jelle Plets,
  • Quinten Bouckaert and
  • Wim De Waele

20 March 2023

This work addresses the lack of focus on verification and comparison of existing fatigue damage accumulation and life prediction models on the basis of large and well-documented experiment datasets. Sixty-four constant amplitude, 54 two-level block l...

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